/* roulang page: index */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-light:#7BF2D6;
  --accent:#FFB65C;
  --accent-light:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,0.09);
  --glass:rgba(255,255,255,0.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg-base);
  color:var(--t1);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.15;font-weight:700;letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{color:var(--t2)}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,227,182,.28);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(7,11,20,.55);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled{
  background:rgba(7,11,20,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 24px -18px rgba(0,0,0,.95);
}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;flex:0 0 auto;
  box-shadow:0 6px 18px -8px rgba(47,227,182,.7);
}
.brand-mark svg{width:18px;height:18px;stroke:#04120E;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.2px;color:var(--t1)}
.brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.6px;margin-top:3px}
.nav-search{flex:1 1 auto;max-width:540px;position:relative}
.search-box{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{
  border-color:var(--primary);
  background:rgba(47,227,182,.06);
  box-shadow:0 0 0 4px rgba(47,227,182,.15);
}
.search-box svg{width:18px;height:18px;stroke:var(--t3);stroke-width:1.5;fill:none;flex:0 0 auto}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;height:100%;font-size:14px;color:var(--t1);
}
.search-box input::placeholder{color:var(--t3)}
.search-box input:focus{outline:none}
.search-btn{
  height:32px;padding:0 16px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;font-size:13px;font-weight:600;flex:0 0 auto;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{filter:brightness(1.08)}
.search-btn:active{transform:translateY(1px)}
.search-hot{
  position:absolute;left:0;right:0;top:calc(100% + 10px);
  display:flex;flex-wrap:wrap;gap:8px;
  padding:14px 16px;
  background:rgba(12,18,31,.96);
  border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:all .22s var(--ease);
  z-index:20;
}
.nav-search:focus-within .search-hot{opacity:1;visibility:visible;transform:translateY(0)}
.search-hot a{
  font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--t2);
  transition:all .2s var(--ease);
}
.search-hot a:hover{color:var(--primary);border-color:rgba(47,227,182,.5);background:rgba(47,227,182,.07)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;letter-spacing:.2px;
  transition:all .22s var(--ease);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px -8px rgba(47,227,182,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn-accent{
  background:linear-gradient(135deg,var(--accent-light),var(--accent) 60%,#F09B33);
  color:#20140A;box-shadow:0 8px 24px -8px rgba(255,182,92,.55);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--t1);
  transition:color .2s var(--ease);
}
.btn-text svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.8;fill:none;transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--primary)}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.disabled{background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;transform:none;border-color:transparent}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;background:var(--glass);
  transition:all .2s var(--ease);
}
.burger:hover{border-color:var(--primary);background:rgba(47,227,182,.08)}
.burger span{display:block;width:16px;height:1.5px;background:var(--t1);margin:3px 0;border-radius:2px;transition:background .2s}
.nav-sub{border-top:1px solid var(--line)}
.nav-sub-inner{display:flex;align-items:center;gap:8px;height:46px}
.nav-sub-link{
  font-size:14px;color:var(--t2);padding:0 14px;height:46px;display:inline-flex;align-items:center;
  position:relative;transition:color .2s var(--ease);
}
.nav-sub-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:9px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-sub-link:hover{color:var(--t1)}
.nav-sub-link:hover::after,.nav-sub-link.active::after{transform:scaleX(1)}
.nav-sub-link.active{color:var(--primary)}
.nav-sub-right{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3)}
.nav-sub-right .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(53,224,161,.14)}
.mobile-only{display:none}
.mobile-search-bar{display:none}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;isolation:isolate}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:linear-gradient(105deg,rgba(7,11,20,.94),rgba(7,11,20,.62)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%);
}
.hero::before{
  content:"";position:absolute;left:-120px;top:-80px;width:420px;height:420px;z-index:-1;
  background:radial-gradient(circle,rgba(47,227,182,.28),transparent 65%);
  filter:blur(120px);opacity:.16;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;bottom:-120px;width:460px;height:460px;z-index:-1;
  background:radial-gradient(circle,rgba(139,123,255,.3),transparent 65%);
  filter:blur(130px);opacity:.16;pointer-events:none;
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  min-height:560px;padding-top:64px;padding-bottom:72px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.6px;color:var(--primary-light);
  background:rgba(47,227,182,.1);
  border:1px solid rgba(47,227,182,.32);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 3px rgba(47,227,182,.2)}
.hero h1{max-width:15em}
.hero h1 span{color:var(--primary)}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:var(--t2);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.hero-trust li{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--t3);letter-spacing:.3px}
.hero-trust svg{width:16px;height:16px;stroke:var(--primary);stroke-width:1.5;fill:none;flex:0 0 auto}

/* Hero 主推卡层叠 */
.hero-card-wrap{position:relative;padding:18px 18px 30px 0}
.hero-card-stack{
  position:absolute;inset:18px 0 0 18px;border-radius:var(--r-xl);
  background:rgba(18,26,43,.6);border:1px solid rgba(255,255,255,.06);
  transform:scale(.92) translate(18px,18px);opacity:.55;
}
.hero-card-stack.two{
  transform:scale(.96) translate(9px,9px);opacity:.75;
  background:rgba(18,26,43,.75);
}
.hero-card{
  position:relative;
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-xl);
  padding:28px;
  box-shadow:0 32px 64px -32px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.12);
}
.hero-card .hot-flag{
  position:absolute;top:-12px;right:20px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  background:linear-gradient(135deg,var(--accent-light),var(--accent));
  color:#20140A;padding:4px 12px;border-radius:var(--r-pill);
  box-shadow:0 8px 20px -10px rgba(255,182,92,.85);
}
.hero-card h2{font-size:19px;border:0;padding:0;font-weight:600;letter-spacing:-.2px}
.hero-card .card-sub{font-size:13px;color:var(--t3);margin-top:8px;line-height:1.7}
.card-rows{margin:22px 0}
.card-row{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08);font-size:13px;
}
.card-row:last-child{border-bottom:0}
.card-row .k{color:var(--t3)}
.card-row .v{color:var(--t1);font-weight:600;font-variant-numeric:tabular-nums}
.card-row .v.ok{color:var(--ok);display:inline-flex;align-items:center;gap:6px}
.card-row .v.ok::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16)}
.hero-card .btn{width:100%}
.hero-card .card-foot{font-size:11px;color:var(--t3);text-align:center;margin-top:14px;letter-spacing:.3px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section + .section{border-top:1px solid transparent}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-title{border-left:4px solid var(--primary);padding-left:14px}
.sec-title p{font-size:14px;color:var(--t3);margin-top:8px;max-width:44em;line-height:1.7}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.4px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF;
}
.tag.tag-primary{background:rgba(47,227,182,.12);border-color:rgba(47,227,182,.35);color:var(--primary-light)}
.tag.tag-accent{background:rgba(255,182,92,.13);border-color:rgba(255,182,92,.36);color:var(--accent-light)}
.status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t2)}
.status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.14)}
.status.warn::before{background:var(--warn);box-shadow:0 0 0 3px rgba(255,182,92,.14)}
.status.idle::before{background:var(--t3);box-shadow:0 0 0 3px rgba(124,138,163,.14)}

/* ---------- Bento 入口网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bcard{
  position:relative;overflow:hidden;
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-lg);
  padding:24px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  min-height:180px;
}
.bcard:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.16);box-shadow:var(--shadow-card)}
.bcard .bcard-tag{align-self:flex-start}
.bcard h3{font-size:17px;font-weight:600;line-height:1.45}
.bcard p{font-size:13px;color:var(--t3);line-height:1.7}
.bcard .bcard-link{margin-top:auto;padding-top:10px}
.bcard.feature{
  grid-column:span 2;
  min-height:326px;
  justify-content:flex-end;
  padding:32px;
  border-color:rgba(47,227,182,.16);
}
.bcard.feature::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,11,20,.25) 0%,rgba(7,11,20,.88) 62%,rgba(7,11,20,.96) 100%),url('/assets/images/coverpic/cover-1.webp');
  background-size:cover;background-position:center;
  z-index:-1;transition:transform .5s var(--ease);
}
.bcard.feature{isolation:isolate}
.bcard.feature:hover::before{transform:scale(1.04)}
.bcard.feature h3{font-size:clamp(20px,2.2vw,24px)}
.bcard.feature p{font-size:14px;color:var(--t2);max-width:34em}
.bcard .cover-mini{
  position:absolute;right:0;top:0;width:46%;height:100%;
  background-image:url('/assets/images/coverpic/cover-2.png');
  background-size:cover;background-position:center;
  opacity:.5;z-index:-1;
  mask-image:linear-gradient(to right,transparent,rgba(0,0,0,.85));
  -webkit-mask-image:linear-gradient(to right,transparent,rgba(0,0,0,.85));
}
.bcard .cover-mini.c2{background-image:url('/assets/images/coverpic/cover-3.png')}
.bcard.tall{isolation:isolate}

/* ---------- 最新信息 ---------- */
.latest-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.latest-left{position:sticky;top:140px}
.latest-left h2{border-left:4px solid var(--primary);padding-left:14px}
.latest-left p{font-size:14px;color:var(--t3);margin-top:14px;line-height:1.85}
.latest-left .btn-text{margin-top:24px}
.news-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.news-item{
  display:block;position:relative;
  padding:22px 16px 22px 18px;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transform:scaleY(.5);
  transition:all .22s var(--ease);
}
.news-item:hover{background:rgba(47,227,182,.05)}
.news-item:hover::before{opacity:1;transform:scaleY(1)}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.news-meta time{font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums}
.news-item h3{font-size:17px;font-weight:600;line-height:1.5;transition:color .2s var(--ease)}
.news-item:hover h3{color:var(--primary)}
.news-item p{
  font-size:14px;color:var(--t2);line-height:1.75;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:96px 20px;text-align:center;gap:16px;
  border:1px dashed rgba(255,255,255,.12);border-radius:var(--r-lg);background:var(--bg-raise);
}
.empty-state svg{width:48px;height:48px;stroke:var(--t3);stroke-width:1.5;fill:none}
.empty-state p{font-size:15px;color:var(--t3)}

/* ---------- 评价轮播 ---------- */
.rev-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.rev-arrows{display:flex;gap:10px}
.rev-arrow{
  width:40px;height:40px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);
  display:grid;place-items:center;backdrop-filter:blur(18px);
  transition:all .2s var(--ease);
}
.rev-arrow svg{width:16px;height:16px;stroke:var(--t1);stroke-width:1.6;fill:none}
.rev-arrow:hover{border-color:var(--primary);background:rgba(47,227,182,.1)}
.rev-arrow:hover svg{stroke:var(--primary)}
.rev-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.rev-track::-webkit-scrollbar{display:none}
.rev-card{
  min-width:320px;max-width:340px;scroll-snap-align:start;
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);padding:24px;
  display:flex;flex-direction:column;gap:12px;
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.rev-card:hover{border-color:rgba(47,227,182,.32);transform:translateY(-3px)}
.rev-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:36px;height:36px;border-radius:50%;flex:0 0 auto;
  background:rgba(47,227,182,.12);color:var(--primary);
  display:grid;place-items:center;font-size:14px;font-weight:600;
}
.rev-name{font-size:14px;font-weight:600;color:var(--t1)}
.rev-role{font-size:11px;color:var(--t3);margin-top:2px}
.stars{display:flex;gap:3px}
.stars svg{width:14px;height:14px;fill:var(--primary);stroke:none}
.rev-card p{font-size:14px;color:var(--t2);line-height:1.8}
.rev-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.rev-foot span{font-size:11px;color:var(--t3);font-variant-numeric:tabular-nums}

/* ---------- 保障条 ---------- */
.guard-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);overflow:hidden;
}
.guard-item{padding:28px 26px;display:flex;flex-direction:column;gap:10px;position:relative}
.guard-item + .guard-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;background:var(--line);
}
.guard-item svg{width:24px;height:24px;stroke:var(--primary);stroke-width:1.5;fill:none}
.guard-item h3{font-size:15px;font-weight:600}
.guard-item p{font-size:12px;color:var(--t3);line-height:1.65}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-side h2{border-left:4px solid var(--primary);padding-left:14px}
.faq-side p{font-size:14px;color:var(--t3);margin-top:14px;line-height:1.8}
.faq-side .btn{margin-top:24px}
.faq-list{
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;
  color:var(--t1);transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  position:relative;width:20px;height:20px;flex:0 0 auto;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--t2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--primary)}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 24px 22px;font-size:15px;color:var(--t2);line-height:1.85;border-left:3px solid transparent;margin-left:0}
.faq-item.is-open .faq-a-inner p{border-left-color:var(--primary)}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 96px}
.cta-inner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:44px 48px;border-radius:var(--r-xl);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid transparent;
  background-clip:padding-box;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);padding:1px;pointer-events:none;
  background:linear-gradient(120deg,rgba(47,227,182,.7),rgba(47,227,182,0) 45%,rgba(255,182,92,.7));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.cta-inner::after{
  content:"";position:absolute;left:-90px;top:-110px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(47,227,182,.5),transparent 66%);
  filter:blur(110px);opacity:.15;pointer-events:none;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px);border:0;padding:0}
.cta-inner p{font-size:14px;color:var(--t3);margin-top:10px;max-width:40em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--bg-deep);border-top:1px solid var(--line)}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,182,.7),transparent);
}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13px;color:var(--t3);line-height:1.85;max-width:26em}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-kw a{
  font-size:12px;color:var(--t3);padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line);transition:all .2s var(--ease);
}
.footer-kw a:hover{color:var(--primary);border-color:rgba(47,227,182,.45)}
.footer-col h4{font-size:13px;font-weight:600;color:var(--t1);letter-spacing:.5px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:13px;color:var(--t3);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  min-height:56px;padding:12px 0;border-top:1px solid var(--line);
}
.footer-bottom p{font-size:12px;color:var(--t3)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t3);
  transition:color .2s var(--ease);
}
.to-top svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.6;fill:none}
.to-top:hover{color:var(--primary)}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,13,.72);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:all .3s var(--ease);z-index:300;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--bg-deep);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .32s var(--ease);
  z-index:301;display:flex;flex-direction:column;padding:24px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--t2);font-size:18px;
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer h4{font-size:12px;color:var(--t3);letter-spacing:.6px;margin:22px 0 12px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 14px;border-radius:var(--r-md);
  font-size:14px;color:var(--t2);border:1px solid transparent;
  transition:all .2s var(--ease);
}
.drawer-link:hover{background:rgba(47,227,182,.08);color:var(--primary);border-color:rgba(47,227,182,.24)}
.drawer .btn{margin-top:auto;width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero-inner{gap:36px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bcard.feature{grid-column:span 2}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-main .footer-col:last-child{grid-column:span 3}
}
@media (max-width:1024px){
  .nav-search{max-width:360px}
  .latest-wrap,.faq-wrap{grid-template-columns:1fr;gap:32px}
  .latest-left,.faq-side{}
  .latest-left{position:static}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .guard-item:nth-child(3)::before,.guard-item:nth-child(odd)::before{display:none}
  .guard-item:nth-child(even)::before{display:block}
  .guard-item:nth-child(3),.guard-item:nth-child(4){border-top:1px solid var(--line)}
}
@media (max-width:900px){
  .container{padding:0 18px}
  .nav-top-inner{height:60px;gap:12px}
  .nav-search{display:none}
  .nav-sub{display:none}
  .mobile-only{display:inline-flex}
  .nav-actions{gap:10px}
  .nav-actions .btn-primary{padding:0 16px;font-size:13px;min-height:40px}
  .burger{width:40px;height:40px}
  .mobile-search-bar{
    display:block;padding:0 18px 14px;
    max-height:0;overflow:hidden;opacity:0;
    transition:max-height .3s var(--ease),opacity .3s var(--ease),padding .3s var(--ease);
    border-top:1px solid transparent;
  }
  .mobile-search-bar.open{max-height:90px;opacity:1;padding:12px 18px 16px;border-top-color:var(--line)}
  .hero-inner{grid-template-columns:1fr;min-height:auto;padding-top:48px;padding-bottom:56px;gap:40px}
  .hero-card-wrap{padding:16px 16px 26px 0;max-width:460px}
  .section{padding:72px 0}
  .cta-band{padding-bottom:72px}
  .cta-inner{padding:32px;flex-direction:column;align-items:flex-start}
  .footer-main{grid-template-columns:1fr 1fr;padding:48px 0 36px}
  .footer-main .footer-col:last-child{grid-column:span 2}
  .footer-brand{grid-column:span 2}
}
@media (max-width:640px){
  .container{padding:0 14px}
  body{font-size:15px}
  h1{font-size:clamp(26px,7vw,32px)}
  .hero h1{max-width:none}
  .hero-sub{font-size:15px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-trust{gap:14px 18px}
  .hero-card{padding:22px;border-radius:var(--r-lg)}
  .bento{grid-template-columns:1fr}
  .bcard.feature{grid-column:span 1;min-height:280px;padding:24px}
  .bcard{border-radius:var(--r-md);padding:20px}
  .section{padding:56px 0}
  .guard-grid{grid-template-columns:1fr}
  .guard-item + .guard-item::before{display:none}
  .guard-item + .guard-item{border-top:1px solid var(--line)}
  .rev-card{min-width:262px;padding:20px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner p{padding:0 18px 18px;font-size:14px}
  .cta-inner{padding:26px 22px;border-radius:var(--r-lg)}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-main{grid-template-columns:1fr;gap:26px}
  .footer-main .footer-col:last-child{grid-column:span 1}
  .footer-brand{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding:16px 0}
  .sec-head{margin-bottom:28px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-light:#7BF2D6;
  --accent:#FFB65C;
  --accent-light:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r8:8px;
  --r14:14px;
  --r20:20px;
  --r28:28px;
  --r999:999px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(600px 420px at 12% -6%, rgba(47,227,182,.10), transparent 70%),
    radial-gradient(700px 480px at 92% 4%, rgba(139,123,255,.10), transparent 72%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
::selection{background:rgba(47,227,182,.28);color:#04120E}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r999);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.3px;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px -10px rgba(47,227,182,.72)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-accent{
  background:linear-gradient(135deg,var(--accent) 0%,#F09A34 100%);
  color:#20120A;
  box-shadow:0 8px 24px -8px rgba(255,182,92,.55);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 12px 32px -10px rgba(255,182,92,.7)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.btn-ghost:active{background:rgba(47,227,182,.14)}
.btn-link{display:inline-flex;align-items:center;gap:8px;color:var(--t2);font-size:14px;font-weight:600}
.btn-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease),stroke .2s}
.btn-link:hover{color:var(--primary)}
.btn-link:hover svg{transform:translateX(3px)}
.btn:disabled,.btn[disabled]{background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.5;letter-spacing:.4px;
  padding:4px 10px;border-radius:var(--r999);
  background:rgba(139,123,255,.14);
  border:1px solid rgba(139,123,255,.35);
  color:#B7ACFF;
}
.tag-primary{background:rgba(47,227,182,.13);border-color:rgba(47,227,182,.38);color:var(--primary-light)}
.tag-accent{background:rgba(255,182,92,.13);border-color:rgba(255,182,92,.36);color:var(--accent-light)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 3px rgba(47,227,182,.18);flex:none}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100}
.nav-top{
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-top.is-stuck{background:rgba(7,11,20,.94);box-shadow:0 12px 32px -18px rgba(0,0,0,.9)}
.nav-top-inner{height:72px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:var(--r8);flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;
  box-shadow:0 6px 18px -8px rgba(47,227,182,.8);
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04120E;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.8px}

.nav-search{
  position:relative;flex:1 1 auto;max-width:440px;min-width:0;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 16px;
  border-radius:var(--r999);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15)}
.nav-search .icon-search{width:18px;height:18px;flex:none;stroke:var(--t3);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;
  background:none;border:0;outline:none;
  color:var(--t1);font-size:14px;
}
.nav-search input::placeholder{color:var(--t3)}
.search-btn{
  flex:none;height:32px;padding:0 14px;border-radius:var(--r999);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;font-size:13px;font-weight:600;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{filter:brightness(1.06)}
.search-btn:active{transform:scale(.97)}
.hot-words{
  position:absolute;left:0;right:0;top:calc(100% + 10px);
  display:none;flex-wrap:wrap;gap:8px;
  padding:14px;border-radius:var(--r14);
  background:rgba(12,18,31,.96);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  z-index:30;
}
.nav-search:focus-within .hot-words{display:flex}
.hot-words a{
  font-size:12px;padding:4px 10px;border-radius:var(--r999);
  border:1px solid var(--line);color:var(--t2);
  transition:border-color .2s,color .2s,background .2s;
}
.hot-words a:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none;margin-left:auto}
.hamburger{
  width:44px;height:44px;border-radius:var(--r14);
  border:1px solid var(--line);background:var(--glass);
  display:grid;place-items:center;
  transition:border-color .2s,background .2s;
}
.hamburger:hover{border-color:var(--primary);background:rgba(47,227,182,.08)}
.hamburger span{display:block;width:16px;height:1.6px;background:var(--t1);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.hamburger span+span{margin-top:4px}

.nav-sub{
  background:rgba(12,18,31,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-sub-inner{height:46px;display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav-sub-inner::-webkit-scrollbar{display:none}
.nav-sub-link{
  padding:6px 12px;border-radius:var(--r999);
  font-size:14px;color:var(--t2);white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav-sub-link:hover{color:var(--primary);background:rgba(47,227,182,.08)}
.nav-sub-link.active{color:var(--primary);background:rgba(47,227,182,.1)}
.nav-sub-right{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--t3);white-space:nowrap;padding-left:12px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,15,.66);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;
  z-index:190;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
  background:var(--bg-deep);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .32s var(--ease);
  z-index:200;padding:24px;overflow-y:auto;
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:15px;font-weight:600;color:var(--t1)}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r8);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--t2);
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-list{display:grid;gap:6px;margin-bottom:22px}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 14px;border-radius:var(--r14);
  background:rgba(255,255,255,.03);border:1px solid transparent;
  font-size:14px;color:var(--t2);
  transition:background .2s,border-color .2s,color .2s;
}
.drawer-list a:hover,.drawer-list a:active{background:rgba(47,227,182,.08);border-color:rgba(47,227,182,.3);color:var(--primary)}
.drawer-note{font-size:12px;color:var(--t3);line-height:1.8;border-top:1px solid var(--line);padding-top:16px}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:24px 0 0;position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--t3)}
.crumb a{color:var(--t2);transition:color .2s}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--t3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-wrap{position:relative;z-index:1;padding:24px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-head{max-width:820px}
.article-head h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.22;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 0;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.meta-row .m-item{display:inline-flex;align-items:center;gap:6px}
.meta-row .m-item svg{width:14px;height:14px;stroke:var(--t3);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.meta-row .m-sep{color:rgba(255,255,255,.18)}
.article-cover{
  margin-top:26px;border-radius:var(--r20);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-raise);
  aspect-ratio:16/9;position:relative;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(47,227,182,.05),rgba(7,11,20,.42));
  pointer-events:none;
}

/* 移动端目录条 */
.toc-mobile{display:none;margin-top:24px}
.toc-mobile summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:var(--r14);
  background:var(--bg-raise);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--t1);
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile[open] summary{border-color:rgba(47,227,182,.4);color:var(--primary)}
.toc-mobile ul{padding:12px 4px 0;display:grid;gap:4px}
.toc-mobile li a{display:block;padding:8px 12px;border-radius:var(--r8);font-size:14px;color:var(--t2)}
.toc-mobile li a:hover{background:rgba(47,227,182,.08);color:var(--primary)}

/* ---------- 正文 ---------- */
.article-body{
  margin-top:36px;max-width:760px;
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r20);
  padding:32px;
  font-size:16px;line-height:1.9;letter-spacing:.2px;color:var(--t2);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em;color:var(--t2)}
.article-body h2{
  position:relative;margin:40px 0 18px;padding-left:14px;
  font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:600;color:var(--t1);
  letter-spacing:-.2px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.article-body h3{margin:28px 0 12px;font-size:19px;line-height:1.45;font-weight:600;color:var(--t1)}
.article-body h4{margin:22px 0 10px;font-size:16px;font-weight:600;color:var(--t1)}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,227,182,.35);transition:border-color .2s,color .2s}
.article-body a:hover{color:var(--primary-light);border-color:var(--primary-light)}
.article-body strong{color:var(--t1);font-weight:600}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:4px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em;color:var(--t2)}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 3px rgba(47,227,182,.12);
}
.article-body ol{list-style:none;counter-reset:num}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:.5em;counter-increment:num;color:var(--t2)}
.article-body ol li::before{
  content:counter(num);position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:22px 0;padding:18px 20px;
  background:var(--glass);border-radius:var(--r14);
  border-left:3px solid var(--primary);
  color:var(--t1);font-size:15px;line-height:1.85;
  backdrop-filter:blur(10px);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r14);margin:22px 0 8px;width:100%;height:auto}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:12px;color:var(--t3);text-align:center;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:20px 0}
.article-body .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r14);margin:20px 0}
.article-body th{
  background:rgba(255,255,255,.06);color:var(--t1);font-weight:600;
  text-align:left;padding:12px 16px;white-space:nowrap;
}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--t2)}
.article-body code{
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;
  font-size:14px;color:var(--primary-light);
}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}

/* 空态 */
.empty-state{
  margin-top:36px;padding:96px 24px;text-align:center;
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r20);
}
.empty-state svg{width:48px;height:48px;margin:0 auto 18px;stroke:var(--t3);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{font-size:15px;color:var(--t2);margin-bottom:20px}

/* 文末标签与分享 */
.article-foot{margin-top:32px;max-width:760px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3)}
.share-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .2s,background .2s,transform .2s var(--ease);
}
.share-btn svg{width:17px;height:17px;stroke:var(--t2);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.share-btn:hover{border-color:var(--primary);background:rgba(47,227,182,.1);transform:translateY(-2px)}
.share-btn:hover svg{stroke:var(--primary)}

/* 上下篇 */
.post-nav{
  margin-top:40px;max-width:760px;
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.post-nav-card{
  display:block;padding:20px;border-radius:var(--r14);
  background:var(--bg-raise);border:1px solid rgba(255,255,255,.07);
  transition:border-color .2s,transform .2s var(--ease),box-shadow .2s var(--ease);
}
.post-nav-card:hover{border-color:rgba(47,227,182,.4);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.post-nav-card span{display:block;font-size:12px;color:var(--t3);letter-spacing:.6px;margin-bottom:6px}
.post-nav-card strong{display:block;font-size:15px;font-weight:600;color:var(--t1);line-height:1.5}
.post-nav-card:hover strong{color:var(--primary)}
.post-nav-card.next{text-align:right}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--bg-raise);border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r20);padding:22px;
}
.side-card h3{
  font-size:14px;font-weight:600;color:var(--t1);letter-spacing:.4px;
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--primary)}
.toc-list{display:grid;gap:2px}
.toc-list a{
  display:block;padding:7px 12px;border-radius:var(--r8);
  font-size:14px;color:var(--t2);line-height:1.6;
  border-left:2px solid transparent;
  transition:color .2s,background .2s,border-color .2s;
}
.toc-list a:hover{color:var(--primary);background:rgba(47,227,182,.06)}
.toc-list a.active{color:var(--primary);background:rgba(47,227,182,.08);border-left-color:var(--primary)}
.toc-empty{font-size:13px;color:var(--t3);line-height:1.8}

.hot-list{display:grid;gap:14px}
.hot-item{display:flex;gap:12px;align-items:flex-start}
.hot-num{
  font-size:18px;font-weight:700;line-height:1.2;
  color:rgba(255,255,255,.14);font-variant-numeric:tabular-nums;flex:none;
  transition:color .2s;
}
.hot-item:hover .hot-num{color:var(--accent)}
.hot-item strong{display:block;font-size:14px;font-weight:500;color:var(--t2);line-height:1.6;transition:color .2s}
.hot-item:hover strong{color:var(--primary)}
.hot-item em{display:block;font-style:normal;font-size:12px;color:var(--t3);margin-top:2px}

.side-cta{
  border-radius:var(--r20);padding:22px;
  background:
    radial-gradient(220px 160px at 20% 0%, rgba(47,227,182,.16), transparent 70%),
    var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
}
.side-cta::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(255,255,255,0),var(--accent));
  opacity:.7;
}
.side-cta h3{font-size:16px;font-weight:600;color:var(--t1);margin-bottom:8px}
.side-cta p{font-size:13px;line-height:1.75;color:var(--t2);margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.related{position:relative;z-index:1;padding:0 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{
  position:relative;padding-left:14px;
  font-size:clamp(22px,2.6vw,28px);font-weight:600;line-height:1.3;color:var(--t1);
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{font-size:14px;color:var(--t3);margin-top:8px;padding-left:14px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--bg-raise);border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r20);overflow:hidden;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{border-color:rgba(255,255,255,.10);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-deep);position:relative}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:rgba(47,227,182,.05);pointer-events:none}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;line-height:1.45;font-weight:600;color:var(--t1);transition:color .2s}
.rel-card:hover .rel-body h3{color:var(--primary)}
.rel-body p{font-size:14px;line-height:1.7;color:var(--t3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:6px;font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums}

/* ---------- CTA 条 ---------- */
.cta-band-wrap{position:relative;z-index:1;padding:0 0 96px}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:34px 36px;border-radius:var(--r28);
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),rgba(255,255,255,0),var(--accent));
  opacity:.8;
}
.cta-band::after{
  content:"";position:absolute;left:-60px;top:-80px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(47,227,182,.5),transparent 68%);
  filter:blur(90px);opacity:.18;pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:600;color:var(--t1);line-height:1.35;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--t2);line-height:1.75;max-width:52ch}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  border-top:1px solid var(--line);
  background:var(--bg-deep);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(47,227,182,.5),rgba(255,255,255,0),rgba(255,182,92,.4));
}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--t3);margin:16px 0 18px;max-width:36ch}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px}
.footer-kw a{
  font-size:12px;padding:4px 10px;border-radius:var(--r999);
  border:1px solid var(--line);color:var(--t2);transition:border-color .2s,color .2s,background .2s;
}
.footer-kw a:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;letter-spacing:.4px}
.footer-col ul{display:grid;gap:10px}
.footer-col li a,.footer-col li span{font-size:14px;line-height:1.7;color:var(--t3);transition:color .2s}
.footer-col li a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;color:var(--t3);padding:14px 0;
}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t3);transition:color .2s}
.to-top svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .container{padding:0 18px}
  .nav-search{max-width:none}
  .nav-actions .btn-accent{display:none}
  .nav-sub-right{display:none}
  .article-layout{grid-template-columns:1fr;gap:0}
  .sidebar{display:none}
  .toc-mobile{display:block}
  .article-body{padding:24px;max-width:none}
  .article-head,.article-cover,.article-foot,.post-nav{max-width:none}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .article-wrap{padding-bottom:72px}
  .related,.cta-band-wrap{padding-bottom:72px}
  .site-footer{padding-top:48px}
}
@media (max-width:640px){
  .container{padding:0 14px}
  .nav-top-inner{height:60px;gap:12px}
  .brand-text em{display:none}
  .brand-text strong{font-size:14px}
  .nav-search{
    position:absolute;left:14px;right:14px;top:calc(100% + 10px);
    max-width:none;display:none;
    background:rgba(12,18,31,.98);
    box-shadow:var(--shadow-card);
  }
  .nav-search.open{display:flex}
  .nav-top-inner{position:relative}
  .hamburger{width:40px;height:40px}
  .nav-sub-inner{height:44px}
  .article-body{padding:20px 18px;border-radius:var(--r14);font-size:15px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:32px}
  .article-body h3{font-size:17px}
  .article-body ul li,.article-body ol li{font-size:15px}
  .article-cover{margin-top:20px;border-radius:var(--r14)}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.next{text-align:left}
  .rel-grid{grid-template-columns:1fr}
  .rel-card{border-radius:var(--r14)}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-main{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-band{border-radius:var(--r20)}
  .cta-actions .btn{width:100%}
  .article-foot{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-soft:#7BF2D6;
  --accent:#FFB65C;
  --accent-soft:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --success:#35E0A1;
  --warn:#FFB65C;
  --error:#FF6B6B;
  --info:#6FA8FF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,227,182,.35);border-radius:var(--r-sm)}
::selection{background:rgba(47,227,182,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,11,20,.55);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(7,11,20,.86);
  border-bottom-color:var(--line);
  box-shadow:0 12px 28px -20px rgba(0,0,0,.9);
}
.nav-top{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 18px -6px rgba(47,227,182,.7);
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04120E;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.2px;color:var(--t1)}
.brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.6px}

.nav-search{position:relative;flex:1 1 auto;max-width:46%;min-width:240px}
.nav-search input{
  width:100%;height:44px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
  color:var(--t1);padding:0 92px 0 44px;font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--t3)}
.nav-search input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,227,182,.15);
  background:rgba(255,255,255,.07);
}
.nav-search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:var(--t3);fill:none;stroke-width:1.5;stroke-linecap:round;pointer-events:none}
.nav-search-btn{
  position:absolute;right:5px;top:5px;height:34px;padding:0 18px;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;font-weight:600;font-size:13px;
  transition:filter .2s ease,transform .16s ease;
}
.nav-search-btn:hover{filter:brightness(1.06)}
.nav-search-btn:active{transform:translateY(1px)}
.nav-hotwords{
  position:absolute;left:0;right:0;top:52px;display:flex;flex-wrap:wrap;gap:8px;
  padding:12px;border-radius:var(--r-md);
  background:rgba(12,18,31,.97);border:1px solid var(--line);
  box-shadow:var(--shadow-card);z-index:30;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.nav-search:focus-within .nav-hotwords{opacity:1;visibility:visible;transform:translateY(0)}
.nav-hotwords a{font-size:12px;padding:4px 10px;border-radius:var(--r-pill);border:1px solid var(--line);color:var(--t2)}
.nav-hotwords a:hover{border-color:var(--primary);color:var(--primary)}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--glass);color:var(--t2);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .16s ease;
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.icon-btn:active{transform:scale(.96)}
.icon-btn svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round}
.search-toggle{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 32px -8px rgba(47,227,182,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),#E39B3F);
  color:#241503;
  box-shadow:0 8px 24px -8px rgba(255,182,92,.55);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 10px 30px -8px rgba(255,182,92,.7)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-secondary{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--t1);
}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.btn-secondary:active{transform:translateY(1px)}
.btn-ghost{padding:0;min-height:0;color:var(--t2);font-weight:500;background:none;box-shadow:none}
.btn-ghost svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;transition:transform .2s ease}
.btn-ghost:hover{color:var(--primary);filter:none;transform:none}
.btn-ghost:hover svg{transform:translateX(3px)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{
  background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;transform:none;filter:none;border-color:transparent;
}

.nav-sub{overflow:hidden;max-height:46px;border-top:1px solid var(--line);transition:max-height .3s ease,opacity .25s ease,border-color .25s ease}
.nav-sub-inner{display:flex;align-items:center;gap:26px;height:46px;overflow-x:auto;scrollbar-width:none}
.nav-sub-inner::-webkit-scrollbar{display:none}
.nav-sub-link{position:relative;font-size:14px;color:var(--t2);padding:4px 0;white-space:nowrap;transition:color .2s ease}
.nav-sub-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--primary);border-radius:2px;transform:scaleX(0);transition:transform .22s ease}
.nav-sub-link:hover{color:var(--t1)}
.nav-sub-link.active{color:var(--primary);font-weight:600}
.nav-sub-link.active::after{transform:scaleX(1)}
.nav-sub-right{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--t3);white-space:nowrap;padding-left:16px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px rgba(53,224,161,.16);flex:0 0 auto}
.site-header.scrolled .nav-sub{max-height:0;opacity:0;border-top-color:transparent}

/* ============ 抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(4,7,13,.72);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s;z-index:200}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,88vw);
  background:var(--bg-deep);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.7,.3,1);
  z-index:201;padding:24px;overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-title{font-size:13px;letter-spacing:.6px;color:var(--t3)}
.drawer-list{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-list a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:0 14px;border-radius:var(--r-md);color:var(--t2);font-size:14px;border:1px solid transparent;transition:.2s}
.drawer-list a:hover,.drawer-list a.active{background:rgba(47,227,182,.08);border-color:rgba(47,227,182,.28);color:var(--primary)}
.drawer-note{font-size:13px;color:var(--t2);padding:16px;border-radius:var(--r-md);background:var(--bg-raise);border:1px solid var(--line);line-height:1.8}

/* ============ 分类横幅 ============ */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);min-height:260px;display:flex;align-items:center}
.cat-hero-bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;opacity:.6}
.cat-hero-shade{position:absolute;inset:0;background:linear-gradient(105deg,rgba(7,11,20,.95),rgba(7,11,20,.66))}
.cat-hero-grid{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
}
.cat-hero-inner{position:relative;z-index:2;padding:44px 0 44px;width:100%}
.hero-copy{max-width:660px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--t3);margin-bottom:16px}
.crumbs a:hover{color:var(--primary)}
.crumbs span{color:var(--t2)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.5;letter-spacing:.4px;padding:4px 10px;border-radius:var(--r-pill)}
.badge-primary{background:rgba(47,227,182,.12);border:1px solid rgba(47,227,182,.35);color:var(--primary-soft)}
.badge-violet{background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF}
.badge-accent{background:rgba(255,182,92,.12);border:1px solid rgba(255,182,92,.35);color:var(--accent-soft)}
.cat-hero h1{
  font-size:clamp(28px,3.9vw,42px);line-height:1.2;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 14px;color:var(--t1);
}
.cat-hero h1 .em{color:var(--primary)}
.cat-hero p{font-size:15px;color:var(--t2);line-height:1.85;max-width:620px}

.hero-search{position:relative;margin-top:24px;max-width:520px}
.hero-search input{
  width:100%;height:46px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--t1);
  padding:0 96px 0 44px;font-size:14px;backdrop-filter:blur(18px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search input::placeholder{color:var(--t3)}
.hero-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15)}
.hero-search .nav-search-icon{left:16px}
.hero-search button{
  position:absolute;right:5px;top:6px;height:34px;padding:0 18px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04120E;font-weight:600;font-size:13px;
}
.hero-search button:hover{filter:brightness(1.06)}

/* ============ 板块 ============ */
.section{padding:72px 0;position:relative}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:32px}
.section h2,.sec-title{
  font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600;
  padding-left:14px;border-left:4px solid var(--primary);
}
.section-head p{margin-top:12px;color:var(--t2);font-size:15px}

.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.chip{
  min-height:38px;padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#101827;color:var(--t2);font-size:13px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.chip:hover{border-color:rgba(47,227,182,.5);color:var(--t1)}
.chip.active{background:rgba(47,227,182,.14);border-color:rgba(47,227,182,.55);color:var(--primary);font-weight:600}

.entry-list{
  background:var(--bg-raise);border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-lg);overflow:hidden;
}
.entry-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto;
  align-items:center;gap:18px;padding:20px 24px;
  border-bottom:1px solid var(--line);position:relative;
  transition:background .2s ease;
}
.entry-row:last-child{border-bottom:0}
.entry-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);opacity:0;transition:opacity .2s ease;
}
.entry-row:hover{background:rgba(47,227,182,.05)}
.entry-row:hover::before{opacity:1}
.entry-num{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:rgba(255,255,255,.12);line-height:1}
.entry-main h3{font-size:17px;font-weight:600;line-height:1.45}
.entry-main h3 a:hover{color:var(--primary)}
.entry-main p{font-size:13px;line-height:1.7;color:var(--t2);margin-top:4px}
.entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:10px}
.status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t2)}
.status i{width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px rgba(53,224,161,.15)}
.status.warn i{background:var(--warn);box-shadow:0 0 0 3px rgba(255,182,92,.15)}
.entry-side{display:flex;align-items:center;gap:12px}

.tip-card{
  margin-top:24px;padding:24px;border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);position:relative;overflow:hidden;
}
.tip-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,rgba(47,227,182,.7),transparent 70%)}
.tip-card h3{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px}
.tip-card h3 svg{width:20px;height:20px;stroke:var(--accent);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.tip-card p{font-size:14px;color:var(--t2);margin-top:10px}
.tip-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px;margin-top:16px}
.tip-list li{display:flex;gap:10px;font-size:13px;color:var(--t2);line-height:1.7}
.tip-list li svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 流程 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.steps{margin-top:28px}
.step{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.step:last-child{border-bottom:0}
.step-num{font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.4;flex:0 0 auto}
.step h3{font-size:17px;font-weight:600}
.step p{font-size:14px;color:var(--t2);margin-top:4px;line-height:1.75}
.media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--bg-raise);position:relative;
}
.media img{width:100%;height:100%;object-fit:cover}
.media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(47,227,182,.08),transparent 55%)}
.media-caption{font-size:12px;color:var(--t3);text-align:center;margin-top:12px}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.8fr 1.5fr;gap:40px;align-items:start}
.faq-side p{font-size:15px;color:var(--t2);margin-top:14px}
.faq-side .btn{margin-top:22px}
.faq{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.10);background:var(--glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-item{transition:background .2s ease,box-shadow .2s ease}
.faq-item.open{background:rgba(47,227,182,.04);box-shadow:inset 3px 0 0 var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;color:var(--t1);
  transition:color .2s ease;min-height:56px;
}
.faq-q:hover{color:var(--primary)}
.faq-ico{flex:0 0 auto;color:var(--t2);transition:transform .24s ease,color .2s ease}
.faq-ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round}
.faq-item.open .faq-ico{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 72px}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:36px;border-radius:var(--r-xl);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
}
.cta-band::before{
  content:"";position:absolute;left:-60px;top:-90px;width:260px;height:260px;border-radius:50%;
  background:var(--primary);filter:blur(120px);opacity:.16;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  border:1px solid transparent;
  background:linear-gradient(120deg,rgba(47,227,182,.5),transparent 45%,rgba(255,182,92,.45)) border-box;
  -webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.cta-text{position:relative;z-index:2;max-width:600px}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3;padding-left:0;border-left:0}
.cta-text p{margin-top:10px;font-size:14px;color:var(--t2)}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--bg-deep);position:relative}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(47,227,182,.6),rgba(255,182,92,.4),transparent)}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:32px;padding:56px 0 40px}
.footer-brand p{font-size:13px;color:var(--t2);margin-top:16px;max-width:340px;line-height:1.85}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-kw a{font-size:12px;color:var(--t3);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 10px;transition:.2s}
.footer-kw a:hover{color:var(--primary);border-color:rgba(47,227,182,.4)}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--t1)}
.footer-col li{margin-bottom:10px;font-size:13px;color:var(--t2);line-height:1.7}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px;border-top:1px solid var(--line);font-size:12px;color:var(--t3)}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--t3);transition:color .2s ease}
.to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .nav-search{max-width:42%}
  .footer-main{grid-template-columns:1.5fr 1fr 1fr;row-gap:36px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav-top{height:60px;gap:12px;flex-wrap:wrap}
  .nav-search{display:none}
  .site-header.search-open .nav-search{
    display:block;order:5;max-width:100%;width:100%;min-width:0;
    margin:0 0 12px;
  }
  .site-header.search-open .nav-hotwords{display:none}
  .search-toggle{display:grid}
  .nav-cta{display:none}
  .nav-sub{max-height:46px}
  .nav-sub-right{display:none}
  .split{grid-template-columns:1fr;gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:24px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .entry-row{grid-template-columns:44px minmax(0,1fr);row-gap:14px;padding:18px 18px}
  .entry-side{grid-column:2;justify-content:flex-start}
  .entry-num{font-size:18px}
  .tip-list{grid-template-columns:1fr}
  .cat-hero{min-height:0}
  .cat-hero-inner{padding:32px 0}
  .footer-main{grid-template-columns:1fr 1fr;padding:44px 0 32px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start;height:auto;padding:16px 0;gap:10px}
}
@media (max-width:640px){
  .container{padding:0 14px}
  .section{padding:48px 0}
  .cta-wrap{padding-bottom:56px}
  .brand-text strong{font-size:14px}
  .brand-text em{font-size:10px}
  .cat-hero h1{font-size:26px}
  .cat-hero p{font-size:14px}
  .hero-search{max-width:100%}
  .hero-search input{padding-right:88px}
  .entry-list{border-radius:var(--r-md)}
  .entry-row{grid-template-columns:1fr;gap:10px;padding:16px}
  .entry-num{display:none}
  .entry-side{grid-column:1}
  .entry-side .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:15px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px;font-size:14px}
  .footer-main{grid-template-columns:1fr}
  .tip-card{padding:20px}
  .cta-band{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-light:#7BF2D6;
  --accent:#FFB65C;
  --accent-light:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r8:8px;
  --r14:14px;
  --r20:20px;
  --r28:28px;
  --r999:999px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:none;
  box-shadow:0 0 0 4px rgba(47,227,182,.22);
  border-radius:var(--r8);
}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
svg{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{
  padding:var(--space-section) 0;
  border-top:1px solid var(--line);
  position:relative;
}
.section:first-of-type{border-top:0}
.sec-head{max-width:800px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600;letter-spacing:-.2px}
.sec-head p{margin-top:12px;color:var(--t2);font-size:15px;line-height:1.8}
h2.rule{
  font-size:clamp(24px,3vw,32px);
  line-height:1.25;
  font-weight:600;
  padding-left:14px;
  border-left:4px solid var(--primary);
}
h3{font-size:20px;line-height:1.4;font-weight:600}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 22px;
  border:0;
  border-radius:var(--r999);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 32px -8px rgba(47,227,182,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:none;filter:brightness(.98)}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),#EF9C3C);
  color:#1A1004;
  box-shadow:0 8px 24px -8px rgba(255,182,92,.55);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 32px -8px rgba(255,182,92,.7)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px);background:rgba(47,227,182,.12)}
.btn-line{
  background:transparent;
  color:var(--t2);
  padding:10px 0;
  min-height:44px;
  font-weight:600;
  font-size:14px;
  gap:8px;
}
.btn-line svg{width:16px;height:16px;transition:transform .2s var(--ease),stroke .2s var(--ease)}
.btn-line:hover{color:var(--primary)}
.btn-line:hover svg{transform:translateX(3px);stroke:var(--primary)}
.btn[disabled],.btn.is-disabled{
  background:rgba(255,255,255,.06);
  color:var(--t3);
  box-shadow:none;
  cursor:not-allowed;
  border-color:transparent;
  transform:none;
  filter:none;
}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px}
.btn-block{display:flex;width:100%}

/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r999);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.4px;
  background:rgba(139,123,255,.14);
  border:1px solid rgba(139,123,255,.35);
  color:#B7ACFF;
  white-space:nowrap;
}
.tag-primary{background:rgba(47,227,182,.12);border-color:rgba(47,227,182,.38);color:var(--primary-light)}
.tag-accent{background:rgba(255,182,92,.12);border-color:rgba(255,182,92,.36);color:var(--accent-light)}
.tag-ok{background:rgba(53,224,161,.12);border-color:rgba(53,224,161,.34);color:var(--ok)}
.tag-muted{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);color:var(--t3)}
.status{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--t2)}
.status .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16)}
.status.is-warn .dot{background:var(--warn);box-shadow:0 0 0 3px rgba(255,182,92,.16)}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:200}
.nav-top{
  background:rgba(7,11,20,.74);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav-top{
  background:rgba(7,11,20,.92);
  box-shadow:0 12px 32px -18px rgba(0,0,0,.9);
}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:var(--r8);
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#04120E;
  box-shadow:0 6px 18px -8px rgba(47,227,182,.8);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;stroke:#04120E;stroke-width:1.8}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--t1)}
.brand-text em{font-size:11px;font-style:normal;color:var(--primary);letter-spacing:1.6px;margin-top:3px}

.search{
  position:relative;
  flex:1 1 auto;
  max-width:520px;
  display:flex;
  align-items:center;
  height:44px;
  padding:0 4px 0 16px;
  border-radius:var(--r999);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search:focus-within{
  border-color:var(--primary);
  background:rgba(47,227,182,.06);
  box-shadow:0 0 0 4px rgba(47,227,182,.15);
}
.search-icon{width:20px;height:20px;color:var(--t3);flex:0 0 auto}
.search-input{
  flex:1 1 auto;
  height:100%;
  min-width:0;
  border:0;
  background:transparent;
  color:var(--t1);
  font-size:14px;
  padding:0 12px;
  outline:none;
}
.search-input::placeholder{color:var(--t3)}
.search-input::-webkit-search-cancel-button{display:none}
.search-submit{
  flex:0 0 auto;
  height:36px;
  padding:0 16px;
  border:0;
  border-radius:var(--r999);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.search-submit:hover{filter:brightness(1.08)}
.search-submit:active{transform:scale(.97)}
.search-hot{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  right:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding:14px;
  border-radius:var(--r14);
  background:rgba(12,18,31,.98);
  border:1px solid var(--line);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.9);
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.search:focus-within .search-hot{opacity:1;visibility:visible;transform:translateY(0)}
.search-hot a{
  padding:5px 12px;
  border-radius:var(--r999);
  border:1px solid var(--line);
  font-size:12px;
  color:var(--t2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.search-hot a:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}

.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.hamburger{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r14);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--t1);
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.hamburger svg{width:20px;height:20px}
.hamburger:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.hamburger:active{transform:scale(.96)}
.mobile-search-btn{
  display:none;
  width:44px;height:44px;
  place-items:center;
  border-radius:var(--r14);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--t1);
  cursor:pointer;
}
.mobile-search-btn svg{width:20px;height:20px}
.mobile-search-bar{
  display:none;
  padding:0 0 12px;
}
.mobile-search-bar.is-open{display:block}

.nav-sub{
  background:rgba(12,18,31,.62);
  border-bottom:1px solid var(--line);
  max-height:48px;
  overflow:hidden;
  opacity:1;
  transition:max-height .32s var(--ease),opacity .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled .nav-sub{max-height:0;opacity:0;border-bottom-color:transparent}
.nav-sub-inner{display:flex;align-items:center;gap:6px;height:46px;overflow-x:auto;scrollbar-width:none}
.nav-sub-inner::-webkit-scrollbar{display:none}
.nav-sub-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:46px;
  padding:0 14px;
  font-size:14px;
  color:var(--t2);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-sub-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:0;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-sub-link:hover{color:var(--t1)}
.nav-sub-link:hover::after,.nav-sub-link.active::after{transform:scaleX(1)}
.nav-sub-link.active{color:var(--primary);font-weight:600}
.nav-sub-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--t3);
  white-space:nowrap;
  padding-left:16px;
}
.nav-sub-right .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16)}

/* ============ 抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:300;visibility:hidden;pointer-events:none}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-backdrop{
  position:absolute;inset:0;
  background:rgba(4,8,16,.72);
  opacity:0;
  transition:opacity .28s var(--ease);
}
.drawer.is-open .drawer-backdrop{opacity:1}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:min(360px,86vw);
  height:100%;
  background:var(--bg-deep);
  border-left:1px solid var(--line);
  padding:24px;
  transform:translateX(100%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:var(--r14);border:1px solid var(--line);
  background:var(--glass);color:var(--t1);cursor:pointer;
}
.drawer-close svg{width:18px;height:18px}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;
  border-radius:var(--r14);
  color:var(--t2);
  font-size:15px;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a svg{width:16px;height:16px;color:var(--t3)}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(47,227,182,.08);border-color:rgba(47,227,182,.24);color:var(--primary)}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);line-height:1.9}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--t3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--t2)}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,11,20,.96),rgba(7,11,20,.72) 58%,rgba(7,11,20,.9));
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.05;
  pointer-events:none;
  z-index:1;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:44px 0 56px;
}
.page-hero-cols{
  display:grid;
  grid-template-columns:1.25fr .9fr;
  gap:40px;
  align-items:center;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.5px;
  margin-top:14px;
}
.page-hero-sub{
  margin-top:16px;
  color:var(--t2);
  font-size:16px;
  line-height:1.85;
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;font-size:12px;color:var(--t3)}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta svg{width:16px;height:16px;color:var(--primary)}
.hero-visual{
  position:relative;
  border-radius:var(--r20);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 24px 48px -24px rgba(0,0,0,.9);
  aspect-ratio:16/10;
  background:var(--bg-raise);
  animation:floatY 6s ease-in-out infinite;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-6px)}
}

/* ============ 下载主体 ============ */
.dl-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:start;
}
.preview{
  border-radius:var(--r20);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.07);
  background:var(--bg-raise);
}
.preview img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.preview figcaption{
  padding:12px 18px;
  font-size:12px;
  color:var(--t3);
  border-top:1px solid var(--line);
}
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:16px;
}
.feature-card{
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r14);
  padding:20px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.feature-card:hover{
  border-color:rgba(47,227,182,.32);
  transform:translateY(-4px);
  box-shadow:var(--shadow-card);
  background:#152034;
}
.feature-card .fc-icon{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:var(--r8);
  background:rgba(47,227,182,.12);
  border:1px solid rgba(47,227,182,.26);
  color:var(--primary);
  margin-bottom:14px;
}
.feature-card .fc-icon svg{width:20px;height:20px}
.feature-card h4{font-size:17px;line-height:1.45;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:14px;line-height:1.7;color:var(--t2)}
.feature-card:last-child{grid-column:1 / -1}

.spec-card{
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r20);
  padding:24px;
  position:relative;
  overflow:hidden;
}
.spec-card::before{
  content:"";
  position:absolute;
  top:-90px;right:-70px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.24),transparent 68%);
  filter:blur(48px);
  opacity:.7;
  pointer-events:none;
}
.spec-card h3{position:relative;margin-bottom:4px}
.spec-card .spec-hint{position:relative;font-size:13px;color:var(--t3);margin-bottom:18px}
.spec{position:relative;border-radius:var(--r14);overflow:hidden;border:1px solid var(--line)}
.spec-row{
  display:grid;
  grid-template-columns:136px 1fr;
  gap:12px;
  padding:12px 16px;
  font-size:14px;
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.spec-row:last-child{border-bottom:0}
.spec-row:nth-child(odd){background:rgba(255,255,255,.02)}
.spec-row:hover{background:rgba(47,227,182,.05)}
.spec-key{color:var(--t3)}
.spec-val{color:var(--t1);font-variant-numeric:tabular-nums}
.spec-val strong{color:var(--primary-light);font-weight:600}
.spec-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;position:relative}
.spec-actions .btn{flex:1 1 160px}
.spec-note{
  position:relative;
  margin-top:16px;
  font-size:12px;
  line-height:1.7;
  color:var(--t3);
  display:flex;
  gap:8px;
}
.spec-note svg{width:16px;height:16px;flex:0 0 auto;color:var(--accent);margin-top:3px}

/* ============ 版本历史时间线 ============ */
.timeline{
  position:relative;
  margin-top:8px;
  padding-left:30px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;top:8px;bottom:8px;
  width:1px;
  background:linear-gradient(180deg,rgba(47,227,182,.55),rgba(139,123,255,.35),rgba(255,255,255,.06));
}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-30px;top:9px;
  width:15px;height:15px;
  border-radius:50%;
  background:var(--bg-base);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(47,227,182,.10);
}
.tl-item:not(:first-child)::before{border-color:rgba(139,123,255,.7);box-shadow:0 0 0 4px rgba(139,123,255,.08)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.tl-ver{
  font-size:18px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:.4px;
}
.tl-date{font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums;letter-spacing:.4px}
.tl-item p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--t2);max-width:820px}

/* ============ 列表行 ============ */
.list-rows{border:1px solid var(--line);border-radius:var(--r20);overflow:hidden;background:var(--bg-raise)}
.list-row{
  display:grid;
  grid-template-columns:64px 1fr auto;
  align-items:center;
  gap:20px;
  min-height:76px;
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  position:relative;
  transition:background .22s var(--ease);
}
.list-row:last-child{border-bottom:0}
.list-row::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--primary);
  transform:scaleY(0);
  transform-origin:center;
  transition:transform .22s var(--ease);
}
.list-row:hover{background:rgba(47,227,182,.05)}
.list-row:hover::before{transform:scaleY(1)}
.row-num{
  font-size:26px;
  font-weight:700;
  color:rgba(255,255,255,.12);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.5px;
  transition:color .22s var(--ease);
}
.list-row:hover .row-num{color:rgba(47,227,182,.4)}
.row-title{font-size:17px;font-weight:600;line-height:1.45}
.row-desc{margin-top:4px;font-size:14px;color:var(--t2);line-height:1.7}

/* ============ FAQ ============ */
.faq-wrap{
  display:grid;
  grid-template-columns:.8fr 1.6fr;
  gap:40px;
  align-items:start;
}
.faq-aside h2{margin-bottom:12px}
.faq-aside p{color:var(--t2);font-size:15px;line-height:1.8;margin-bottom:20px}
.faq-list{
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r20);
  overflow:hidden;
  position:relative;
}
.faq-list::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,182,.6),transparent);
}
.faq-item{border-bottom:1px solid var(--line);transition:background .22s var(--ease),border-color .22s var(--ease)}
.faq-item:last-child{border-bottom:0}
.faq-item.is-open{background:rgba(47,227,182,.04);box-shadow:inset 3px 0 0 var(--primary)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  text-align:left;
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-ico{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  transition:transform .24s var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:var(--t3);
  border-radius:2px;
  transition:background .2s var(--ease);
}
.faq-ico::before{left:9px;top:2px;width:2px;height:16px}
.faq-ico::after{top:9px;left:2px;height:2px;width:16px}
.faq-item.is-open .faq-ico{transform:rotate(45deg)}
.faq-item.is-open .faq-ico::before,.faq-item.is-open .faq-ico::after{background:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--t2);
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r28);
  padding:36px;
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:-120px;left:-60px;
  width:300px;height:300px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.5),transparent 66%);
  filter:blur(90px);
  opacity:.15;
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:var(--r28);
  padding:1px;
  background:linear-gradient(120deg,rgba(47,227,182,.55),transparent 46%,rgba(255,182,92,.45));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.cta-band h2{position:relative;font-size:clamp(22px,2.6vw,28px);line-height:1.3;font-weight:600;border:0;padding:0}
.cta-band p{position:relative;margin-top:10px;color:var(--t2);font-size:15px;line-height:1.8;max-width:620px}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;
  border-top:1px solid transparent;
  background:var(--bg-deep);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,182,.6),rgba(139,123,255,.4),transparent);
}
.footer-main{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:32px;
  padding:56px 0 40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--t3);
  max-width:340px;
}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-kw a{
  padding:4px 10px;
  border-radius:var(--r999);
  border:1px solid var(--line);
  font-size:12px;
  color:var(--t2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.footer-kw a:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:13px;color:var(--t3);line-height:1.7}
.footer-col a{color:var(--t3);font-size:13px;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--primary);padding-left:3px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:56px;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--t3);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  padding:0 4px;
  color:var(--t3);
  font-size:12px;
  transition:color .2s var(--ease);
}
.to-top svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.to-top:hover{color:var(--primary)}
.to-top:hover svg{transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  :root{--space-section:80px}
  .dl-grid{grid-template-columns:1fr 1fr;gap:20px}
  .faq-wrap{grid-template-columns:1fr 1.5fr;gap:28px}
}
@media (max-width:1024px){
  .nav-top-inner{gap:14px}
  .search{max-width:none}
  .page-hero-cols{grid-template-columns:1fr;gap:28px}
  .hero-visual{max-width:520px}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:900px){
  :root{--space-section:72px}
  .container{padding:0 18px}
  .search{display:none}
  .mobile-search-btn{display:grid}
  .nav-actions .btn{display:none}
  .nav-top-inner{height:60px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px;letter-spacing:1.2px}
  .site-header.is-scrolled .nav-sub{max-height:48px;opacity:1;border-bottom-color:var(--line)}
  .nav-sub-inner{height:46px}
  .nav-sub-right{display:none}
  .dl-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .footer-main{grid-template-columns:1fr 1fr;padding:44px 0 32px}
  .footer-brand{grid-column:1 / -1}
  .footer-col:last-child{grid-column:auto}
  .list-row{grid-template-columns:48px 1fr;gap:14px;padding:16px 18px}
  .list-row .row-right{grid-column:2;justify-self:start}
}
@media (max-width:640px){
  :root{--space-section:56px}
  .container{padding:0 14px}
  body{font-size:15px}
  .page-hero-inner{padding:32px 0 40px}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .page-hero-sub{font-size:15px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1 1 100%}
  .hero-visual{max-width:none;border-radius:var(--r14)}
  .feature-grid{grid-template-columns:1fr}
  .feature-card{border-radius:var(--r14)}
  .spec-row{grid-template-columns:1fr;gap:2px;padding:12px 14px}
  .spec-actions .btn{flex:1 1 100%}
  .list-row{grid-template-columns:1fr;gap:10px;min-height:0}
  .row-num{font-size:20px}
  .list-row .row-right{grid-column:1}
  .cta-band{border-radius:var(--r20);padding:22px}
  .cta-band::after{border-radius:var(--r20)}
  .cta-actions .btn{flex:1 1 100%}
  .footer-main{grid-template-columns:1fr;gap:24px;padding:36px 0 28px}
  .footer-bottom{justify-content:flex-start}
  .timeline{padding-left:24px}
  .tl-item::before{left:-24px;width:13px;height:13px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
/* ===================== 设计令牌 ===================== */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-light:#7BF2D6;
  --accent:#FFB65C;
  --accent-light:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --r-xl:28px;
  --sec:96px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --shadow-soft:0 24px 48px -24px rgba(0,0,0,.72);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
::selection{background:rgba(47,227,182,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-deep);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,182,.45);}

/* ===================== 布局容器 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;line-height:1;
  padding:13px 24px;min-height:44px;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px -6px rgba(47,227,182,.72);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;filter:brightness(.98);}
.btn-accent{
  background:linear-gradient(135deg,var(--accent-light),var(--accent));
  color:#241503;
  box-shadow:0 8px 24px -8px rgba(255,182,92,.55);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 12px 32px -6px rgba(255,182,92,.65);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08);}
.btn-ghost:active{background:rgba(47,227,182,.14);transform:translateY(1px);}
.btn-sm{padding:10px 16px;font-size:14px;min-height:38px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{
  background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;pointer-events:none;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary);
  min-height:44px;
}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ===================== 徽章 / 标签 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;letter-spacing:.4px;
  padding:6px 11px;border-radius:999px;white-space:nowrap;
}
.badge-violet{background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF;}
.badge-primary{background:rgba(47,227,182,.12);border:1px solid rgba(47,227,182,.35);color:var(--primary-light);}
.badge-accent{background:rgba(255,182,92,.12);border:1px solid rgba(255,182,92,.35);color:var(--accent-light);}
.badge-muted{background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--t3);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16);display:inline-block;}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-stuck{
  background:rgba(7,11,20,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -18px rgba(0,0,0,.9);
}
.nav-top{position:relative;}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:72px;}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;
  box-shadow:0 6px 18px -8px rgba(47,227,182,.85);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-1px) rotate(-4deg);box-shadow:0 10px 22px -8px rgba(47,227,182,.95);}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04120E;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:10.5px;color:var(--t3);letter-spacing:1.2px;}

.nav-search{
  position:relative;flex:1 1 auto;max-width:520px;
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 6px 0 40px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:999px;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.nav-search .search-ico{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;fill:none;stroke:var(--t3);stroke-width:1.6;stroke-linecap:round;
  transition:stroke .2s var(--ease);
}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;
  background:transparent;border:0;color:var(--t1);font-size:14px;
}
.nav-search input::placeholder{color:var(--t3);}
.nav-search input:focus{outline:none;}
.nav-search:focus-within{
  border-color:var(--primary);
  background:rgba(47,227,182,.05);
  box-shadow:0 0 0 4px rgba(47,227,182,.15);
}
.nav-search:focus-within .search-ico{stroke:var(--primary);}
.search-btn{
  flex:0 0 auto;height:32px;padding:0 16px;border-radius:999px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;font-size:13px;font-weight:600;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{filter:brightness(1.08);}
.search-btn:active{transform:scale(.97);}

.nav-top-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-burger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-burger span{display:block;width:18px;height:1.6px;background:var(--t1);border-radius:2px;transition:background .2s var(--ease);}
.nav-burger:hover{border-color:var(--primary);background:rgba(47,227,182,.08);}
.nav-burger:hover span{background:var(--primary);}

.nav-search-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);place-items:center;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-search-toggle svg{width:18px;height:18px;fill:none;stroke:var(--t1);stroke-width:1.7;stroke-linecap:round;}
.nav-search-toggle:hover{border-color:var(--primary);background:rgba(47,227,182,.08);}
.nav-search-toggle:hover svg{stroke:var(--primary);}

/* 次级导航 */
.nav-sub{
  border-top:1px solid var(--line);
  max-height:48px;overflow:hidden;
  transition:max-height .32s var(--ease),opacity .24s var(--ease);
  opacity:1;
}
.is-stuck .nav-sub{max-height:0;opacity:0;}
.nav-sub-inner{display:flex;align-items:center;gap:8px;height:46px;}
.nav-sub-link{
  position:relative;font-size:14px;color:var(--t2);
  padding:6px 14px;border-radius:999px;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-sub-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-sub-link.active{color:var(--primary);background:rgba(47,227,182,.09);}
.nav-sub-link.active::after{
  content:"";position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-sub-right{display:flex;align-items:center;gap:8px;margin-left:auto;font-size:12.5px;color:var(--t3);white-space:nowrap;}

/* 抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(4,7,13,.64);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.nav-drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--bg-deep);
  border-left:1px solid var(--line);
  padding:24px 22px 40px;
  transform:translateX(100%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
}
.nav-drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-head strong{font-size:15px;letter-spacing:.4px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);}
.drawer-list{display:grid;gap:6px;margin-bottom:26px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 14px;border-radius:12px;
  font-size:14.5px;color:var(--t2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-list a:hover,.drawer-list a.active{background:rgba(47,227,182,.08);color:var(--primary);border-color:rgba(47,227,182,.28);}
.drawer-list a svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.drawer-note{font-size:12.5px;color:var(--t3);line-height:1.8;border-top:1px solid var(--line);padding-top:16px;}
.drawer-note a{color:var(--primary);}

/* ===================== 页面横幅 ===================== */
.page-banner{
  position:relative;overflow:hidden;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line);
}
.page-banner .bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
}
.page-banner .veil{
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,11,20,.94),rgba(7,11,20,.64)),
             radial-gradient(circle at 86% 12%,rgba(139,123,255,.20),transparent 62%);
}
.page-banner .grid-lines{
  position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:24px 24px;
}
.banner-inner{position:relative;z-index:1;display:flex;align-items:center;gap:40px;justify-content:space-between;}
.banner-text{max-width:640px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.2);}
.crumbs .cur{color:var(--t2);}
.banner-text h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.22;font-weight:700;letter-spacing:-.5px;
  margin-bottom:16px;
}
.banner-text h1 .hl{
  color:var(--primary);
  background:linear-gradient(120deg,var(--primary),var(--primary-light));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.banner-text .lede{font-size:15.5px;line-height:1.85;color:var(--t2);max-width:600px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.banner-shield{
  flex:0 0 auto;width:150px;height:150px;border-radius:28px;
  display:grid;place-items:center;
  background:rgba(47,227,182,.08);
  border:1px solid rgba(47,227,182,.28);
  box-shadow:0 0 60px -20px rgba(47,227,182,.6) inset;
}
.banner-shield svg{width:66px;height:66px;fill:none;stroke:var(--primary);stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round;}

/* ===================== 通用板块标题 ===================== */
.section{padding:var(--sec) 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);line-height:1.28;font-weight:600;letter-spacing:-.2px;
  padding-left:14px;position:relative;margin-bottom:12px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{color:var(--t2);font-size:15.5px;line-height:1.85;}

/* ===================== 图文交错行 ===================== */
.zig-wrap{padding:0 0 var(--sec);}
.zig{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:64px 0;position:relative;
  border-bottom:1px solid var(--line);
}
.zig::after{
  content:"";position:absolute;left:0;bottom:-1px;height:1px;width:36%;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.zig:last-child{border-bottom:0;}
.zig:last-child::after{display:none;}
.zig.reverse .zig-media{order:2;}
.zig-media{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  aspect-ratio:16/10;background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.zig-media:hover img{transform:scale(1.03);}
.zig-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(47,227,182,.06),rgba(7,11,20,.42));
}
.zig-index{
  position:absolute;left:16px;top:14px;z-index:2;
  font-size:12px;letter-spacing:1.4px;color:var(--primary-light);
  font-variant-numeric:tabular-nums;
  background:rgba(7,11,20,.6);border:1px solid rgba(47,227,182,.32);
  padding:5px 10px;border-radius:999px;
  backdrop-filter:blur(8px);
}
.zig-body h2{
  font-size:clamp(21px,2.4vw,26px);line-height:1.35;font-weight:600;letter-spacing:-.2px;
  padding-left:14px;position:relative;margin-bottom:16px;
}
.zig-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.zig-body p{font-size:15.5px;line-height:1.9;color:var(--t2);margin-bottom:12px;}
.checklist{display:grid;gap:12px;margin-top:18px;}
.checklist li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.8px;line-height:1.7;color:var(--t2);
  padding:11px 14px;border-radius:var(--r-m);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.checklist li:hover{background:rgba(47,227,182,.06);border-color:rgba(47,227,182,.24);}
.checklist svg{
  flex:0 0 auto;width:17px;height:17px;margin-top:3px;
  fill:none;stroke:var(--primary);stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round;
}

/* ===================== 自查清单 + 安全提示卡 ===================== */
.guard-section{padding:var(--sec) 0;border-top:1px solid var(--line);}
.guard-grid{display:grid;grid-template-columns:1.4fr .82fr;gap:32px;align-items:start;}
.guard-panel{
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-l);
  padding:10px 26px;
}
.step{
  display:flex;gap:18px;align-items:flex-start;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.step:last-child{border-bottom:0;}
.step .num{
  font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;line-height:1;
  color:rgba(255,255,255,.14);
  min-width:46px;padding-top:4px;
  transition:color .2s var(--ease);
}
.step:hover .num{color:var(--primary);}
.step h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:5px;}
.step p{font-size:14.8px;line-height:1.80;color:var(--t2);}

.safety-card{
  position:sticky;top:96px;
  background:var(--glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-l);
  padding:26px 24px;
  overflow:hidden;
}
.safety-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.42),transparent);
}
.safety-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.20),transparent 70%);
  filter:blur(30px);pointer-events:none;
}
.safety-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;position:relative;z-index:1;}
.safety-head .ico{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  display:grid;place-items:center;
  background:rgba(255,182,92,.14);border:1px solid rgba(255,182,92,.32);
}
.safety-head .ico svg{width:17px;height:17px;fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.safety-head h3{font-size:16.5px;font-weight:600;}
.safety-sub{font-size:13px;color:var(--t3);margin-bottom:16px;position:relative;z-index:1;}
.safety-list{display:grid;gap:12px;margin-bottom:22px;position:relative;z-index:1;}
.safety-list li{display:flex;gap:9px;font-size:14px;line-height:1.7;color:var(--t2);}
.safety-list li span.n{
  flex:0 0 auto;width:6px;height:6px;border-radius:50%;margin-top:9px;
  background:var(--primary);box-shadow:0 0 0 3px rgba(47,227,182,.14);
}
.safety-card .btn{position:relative;z-index:1;}

/* ===================== 常见异常列表 ===================== */
.issue-section{padding:0 0 var(--sec);}
.issue-list{display:grid;gap:14px;margin-top:8px;}
.issue{
  display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;
  background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--r-l);
  padding:20px 24px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.issue:hover{
  border-color:rgba(47,227,182,.28);
  background:#141d30;
  transform:translateY(-4px);
  box-shadow:var(--shadow-card);
}
.issue .idx{
  font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(139,123,255,.13);border:1px solid rgba(139,123,255,.3);
  color:#B7ACFF;
}
.issue h3{font-size:16.5px;font-weight:600;line-height:1.45;margin-bottom:4px;}
.issue p{font-size:14.5px;line-height:1.78;color:var(--t2);}

/* ===================== CTA 条 ===================== */
.cta-section{padding:0 0 var(--sec);}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:36px 38px;border-radius:var(--r-xl);
  background:var(--glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.cta-band::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);padding:1px;
  background:linear-gradient(120deg,rgba(47,227,182,.6),transparent 46%,rgba(255,182,92,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;
}
.cta-band .blob{
  position:absolute;left:-30px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.55),transparent 68%);
  filter:blur(60px);opacity:.15;pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:620px;}
.cta-text h2{
  font-size:clamp(21px,2.6vw,27px);line-height:1.34;font-weight:600;letter-spacing:-.2px;
  padding-left:14px;position:relative;margin-bottom:10px;
}
.cta-text h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.cta-text p{font-size:14.8px;line-height:1.8;color:var(--t2);}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;}

/* ===================== 页脚 ===================== */
.site-footer{position:relative;background:var(--bg-deep);}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,182,.55),rgba(139,123,255,.35),transparent);
}
.footer-main{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:32px;
  padding:64px 0 48px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t3);margin:18px 0 18px;max-width:340px;}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px;}
.footer-kw a{
  font-size:12px;padding:5px 10px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--t3);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.footer-kw a:hover{color:var(--primary);border-color:rgba(47,227,182,.4);background:rgba(47,227,182,.08);}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.4px;color:var(--t1);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:13.5px;line-height:1.7;color:var(--t3);}
.footer-col a{color:var(--t3);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 0;
  border-top:1px solid var(--line);
  font-size:12px;color:var(--t3);flex-wrap:wrap;
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--t3);min-height:44px;transition:color .2s var(--ease);}
.to-top svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.to-top:hover{color:var(--primary);}

/* ===================== 响应式 ===================== */
@media (max-width:1200px){
  :root{--sec:80px;}
  .guard-grid{grid-template-columns:1.25fr .9fr;gap:26px;}
}
@media (max-width:1024px){
  :root{--sec:72px;}
  .nav-search{max-width:400px;}
  .zig{gap:36px;padding:52px 0;}
  .banner-shield{width:120px;height:120px;border-radius:24px;}
  .banner-shield svg{width:54px;height:54px;}
  .guard-grid{grid-template-columns:1fr;}
  .safety-card{position:static;}
  .footer-main{grid-template-columns:1.5fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:24px;padding:30px 26px;}
}
@media (max-width:900px){
  .container{padding:0 18px;}
  .nav-top-inner{height:64px;gap:12px;}
  .nav-search{display:none;}
  .nav-search-toggle{display:grid;}
  .nav-top-right .btn{display:none;}
  .search-open .nav-search{
    display:flex;position:absolute;left:18px;right:18px;top:70px;
    max-width:none;height:48px;background:rgba(12,18,31,.98);
    box-shadow:0 18px 40px -20px rgba(0,0,0,.95);z-index:5;
  }
  .nav-sub-inner{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;height:44px;gap:4px;}
  .nav-sub-inner::-webkit-scrollbar{display:none;}
  .nav-sub-right{display:none;}
  .banner-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .banner-shield{width:88px;height:88px;border-radius:20px;}
  .banner-shield svg{width:40px;height:40px;}
  .zig{grid-template-columns:1fr;gap:24px;padding:var(--sec) 0;}
  .zig.reverse .zig-media{order:0;}
  .issue{grid-template-columns:auto 1fr;gap:16px;padding:18px 20px;}
  .issue .badge{grid-column:2;justify-self:start;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px 24px;padding:48px 0 36px;}
}
@media (max-width:640px){
  :root{--sec:56px;}
  .container{padding:0 14px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:9.5px;letter-spacing:.8px;}
  .page-banner{padding:36px 0 32px;}
  .banner-text h1{font-size:26px;line-height:1.28;}
  .banner-text .lede{font-size:14.5px;}
  .section-head h2,.zig-body h2,.cta-text h2{font-size:21px;}
  .btn-block-mobile{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .guard-panel{padding:6px 18px;}
  .step{gap:12px;padding:20px 0;}
  .step .num{font-size:22px;min-width:36px;}
  .issue{padding:16px 16px;}
  .issue .idx{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .footer-main{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;padding:14px 0 20px;}
  .nav-drawer .drawer-panel{width:min(300px,92vw);}
  .safety-card{padding:22px 18px;}
}
@media (max-width:380px){
  .brand-text em{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-soft:#7BF2D6;
  --accent:#FFB65C;
  --accent-soft:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r8:8px;
  --r14:14px;
  --r20:20px;
  --r28:28px;
  --r999:999px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,227,182,.18);border-color:var(--primary)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.i{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r999);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:transform .18s ease,box-shadow .22s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;
  box-shadow:0 8px 24px -8px rgba(47,227,182,.6);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 32px -8px rgba(47,227,182,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:none;filter:brightness(.98)}
.btn-accent{
  background:linear-gradient(135deg,var(--accent-soft),var(--accent));
  color:#241503;
  box-shadow:0 8px 24px -10px rgba(255,182,92,.65);
}
.btn-accent:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.btn-ghost:active{background:rgba(47,227,182,.16);transform:translateY(1px)}
.btn-sm{min-height:36px;padding:7px 16px;font-size:13.5px}
.btn:disabled,.btn[disabled]{
  background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;
  border-color:transparent;transform:none;filter:none;
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary-soft);font-size:14px;font-weight:600}
.link-arrow .i{width:16px;height:16px;transition:transform .2s ease}
.link-arrow:hover{color:var(--primary)}
.link-arrow:hover .i{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,11,20,0);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{
  background:rgba(7,11,20,.86);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -20px rgba(0,0,0,.9);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.nav-top{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:var(--r8);
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:grid;place-items:center;color:#04120E;flex:none;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.3px}
.brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.7px}

.nav-search{position:relative;flex:1;max-width:520px;min-width:0}
.nav-search form{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 6px 0 16px;
  border-radius:var(--r999);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search form:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15)}
.nav-search .i{color:var(--t3);width:18px;height:18px}
.nav-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;color:var(--t1);
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--t3)}
.hot-words{
  display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);
  gap:8px;flex-wrap:wrap;padding:12px;
  background:rgba(12,18,31,.96);border:1px solid var(--line);border-radius:var(--r14);
  box-shadow:0 20px 40px -24px rgba(0,0,0,.9);
}
.nav-search:focus-within .hot-words{display:flex}
.hot-words a{
  font-size:12px;padding:4px 10px;border-radius:var(--r999);
  border:1px solid var(--line);color:var(--t2);
}
.hot-words a:hover{border-color:var(--primary);color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}
.nav-burger{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--t2);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.nav-burger:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.nav-burger:active{background:rgba(47,227,182,.16)}
.nav-search-toggle{display:none}

.nav-sub{
  border-top:1px solid var(--line-soft);
  overflow:hidden;
  transition:max-height .3s ease,opacity .25s ease;
  max-height:60px;
}
.site-header.scrolled .nav-sub{max-height:0;opacity:0;border-top-color:transparent}
.nav-sub-inner{display:flex;align-items:center;gap:8px;height:46px}
.nav-sub-link{
  position:relative;display:inline-flex;align-items:center;height:46px;
  padding:0 14px;font-size:14px;color:var(--t2);white-space:nowrap;
}
.nav-sub-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-sub-link:hover{color:var(--t1)}
.nav-sub-link:hover::after,.nav-sub-link.active::after{transform:scaleX(1)}
.nav-sub-link.active{color:var(--primary-soft)}
.nav-sub-right{
  margin-left:auto;display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--t3);white-space:nowrap;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16);flex:none}

.mobile-search{display:none;padding:0 0 12px}
.mobile-search.open{display:block}
.mobile-search form{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 6px 0 16px;
  border-radius:var(--r999);background:rgba(18,26,43,.96);
  border:1px solid var(--line);box-shadow:0 14px 28px -18px rgba(0,0,0,.9);
}
.mobile-search input{flex:1;min-width:0;height:100%;border:0;background:transparent;color:var(--t1);font-size:14px;outline:none}
.mobile-search input::placeholder{color:var(--t3)}
.mobile-search .i{color:var(--t3);width:18px;height:18px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,12,.62);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:150;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);z-index:160;
  background:var(--bg-deep);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-head h2{font-size:15px;letter-spacing:.4px;color:var(--t2);font-weight:600}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--t2)}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-nav{display:grid;gap:6px;margin-bottom:24px}
.drawer-nav a{padding:12px 14px;border-radius:12px;color:var(--t2);font-size:15px;border:1px solid transparent}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(47,227,182,.08);border-color:rgba(47,227,182,.28);color:var(--primary-soft)}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--t3);display:grid;gap:8px}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  min-height:260px;display:flex;align-items:center;
  background:var(--bg-raise);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(105deg,rgba(7,11,20,.94),rgba(7,11,20,.62)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 24px);
  opacity:.92;
}
.hero-inner{position:relative;z-index:2;padding:48px 0 44px;max-width:1200px;width:100%}
.hero-copy{max-width:62%}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--t3);margin-bottom:16px;flex-wrap:wrap}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(255,255,255,.24)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);line-height:1.15;letter-spacing:-.5px;font-weight:700;
  margin-bottom:14px;max-width:760px;
}
.page-hero h1 span{color:var(--primary-soft)}
.hero-sub{color:var(--t2);font-size:15.5px;line-height:1.8;max-width:620px;margin-bottom:22px}
.faq-search{
  display:flex;align-items:center;gap:10px;height:52px;max-width:560px;
  padding:0 8px 0 18px;border-radius:var(--r999);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15)}
.faq-search .i{color:var(--t3)}
.faq-search input{flex:1;min-width:0;height:100%;border:0;background:transparent;color:var(--t1);font-size:14.5px;outline:none}
.faq-search input::placeholder{color:var(--t3)}
.faq-search input:disabled{color:var(--t3);cursor:not-allowed}
.search-hint{font-size:13px;color:var(--t3);margin-top:12px;min-height:20px}
.search-hint strong{color:var(--primary-soft);font-weight:600}

/* ---------- 主体 —— 左锚点 右手风琴 ---------- */
.faq-layout{
  display:grid;grid-template-columns:264px minmax(0,1fr);gap:32px;
  padding:56px 0 0;
  align-items:start;
}
.anchor-card{
  position:sticky;top:132px;
  background:var(--bg-raise);
  border:1px solid var(--line-soft);
  border-radius:var(--r20);
  padding:18px 14px;
}
.anchor-title{
  font-size:12px;letter-spacing:.6px;color:var(--t3);font-weight:600;
  padding:0 10px 12px;border-bottom:1px solid var(--line);margin-bottom:10px;
}
.anchor-list{display:grid;gap:2px}
.anchor-link{
  display:block;padding:11px 12px;border-radius:10px;
  font-size:14px;color:var(--t2);
  border-left:3px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-link:hover{background:rgba(255,255,255,.04);color:var(--t1)}
.anchor-link.active{
  color:var(--primary-soft);
  background:rgba(47,227,182,.06);
  border-left-color:var(--primary);
}
.anchor-note{
  margin-top:14px;padding:12px;border-radius:12px;
  background:rgba(139,123,255,.1);border:1px solid rgba(139,123,255,.28);
  font-size:12.5px;line-height:1.7;color:#B7ACFF;
}

.faq-body{min-width:0}
.faq-group{margin-bottom:40px;scroll-margin-top:120px}
.faq-group:last-child{margin-bottom:0}
.group-title{
  font-size:clamp(22px,2.6vw,28px);line-height:1.3;font-weight:600;
  border-left:4px solid var(--primary);padding-left:14px;
  margin-bottom:8px;scroll-margin-top:120px;
}
.group-desc{color:var(--t3);font-size:13.5px;padding-left:18px;margin-bottom:18px}

.faq-item{
  background:var(--bg-raise);
  border:1px solid var(--line-soft);
  border-radius:var(--r14);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.14)}
.faq-item.open{
  border-color:rgba(47,227,182,.32);
  background:linear-gradient(180deg,rgba(47,227,182,.05),rgba(18,26,43,1) 60%);
  box-shadow:inset 3px 0 0 var(--primary);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;min-height:58px;text-align:left;
  font-size:16px;line-height:1.6;font-weight:600;color:var(--t1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary-soft)}
.faq-q:active{background:rgba(47,227,182,.06)}
.plus{
  width:20px;height:20px;flex:none;fill:none;stroke:var(--primary);
  stroke-width:1.8;stroke-linecap:round;
  transition:transform .24s ease;
}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:0 20px 18px;color:var(--t2);font-size:15px;line-height:1.85}
.faq-a-inner ul{display:grid;gap:6px;margin:10px 0 0}
.faq-a-inner li{position:relative;padding-left:16px}
.faq-a-inner li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);opacity:.85;
}
.faq-a-inner strong{color:var(--t1);font-weight:600}

/* ---------- 未解决卡片 ---------- */
.unsolved{
  margin:8px 0 0;
  position:relative;overflow:hidden;
  border-radius:var(--r20);
  border:1px solid rgba(255,255,255,.1);
  background:var(--glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:28px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.unsolved::before{
  content:"";position:absolute;left:-60px;top:-90px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.16),transparent 68%);
  pointer-events:none;
}
.unsolved h2{font-size:20px;margin-bottom:8px;position:relative}
.unsolved p{color:var(--t2);font-size:14.5px;max-width:640px;position:relative;margin:0}
.unsolved-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- 相关入口 ---------- */
.related{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.sec-head h2{
  font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600;
  border-left:4px solid var(--primary);padding-left:14px;
}
.sec-head p{color:var(--t3);font-size:14px;margin:8px 0 0 18px}
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.faq-card{
  display:flex;flex-direction:column;
  background:var(--bg-raise);
  border:1px solid var(--line-soft);
  border-radius:var(--r20);
  overflow:hidden;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),border-color .22s ease,box-shadow .22s ease;
}
.faq-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.1);box-shadow:var(--shadow-card)}
.faq-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-raise)}
.faq-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.faq-card:hover .thumb img{transform:scale(1.04)}
.faq-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(47,227,182,.1),transparent 55%);
}
.faq-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.faq-card h3{font-size:17px;line-height:1.45;font-weight:600}
.faq-card h3 a:hover{color:var(--primary)}
.faq-card p{color:var(--t2);font-size:13.5px;line-height:1.75;margin:0}
.faq-card .go{margin-top:auto;font-size:13px;color:var(--primary-soft);display:inline-flex;align-items:center;gap:6px}
.faq-card .go .i{width:15px;height:15px;transition:transform .2s ease}
.faq-card:hover .go .i{transform:translateX(3px)}
.tag{
  display:inline-flex;align-items:center;font-size:12px;line-height:1.5;letter-spacing:.4px;
  padding:4px 10px;border-radius:var(--r999);
  background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF;
}
.tag.is-main{background:rgba(47,227,182,.12);border-color:rgba(47,227,182,.38);color:var(--primary-soft)}
.tag.is-warn{background:rgba(255,182,92,.12);border-color:rgba(255,182,92,.38);color:var(--accent-soft)}

/* ---------- CTA 条 ---------- */
.cta-wrap{padding:72px 0 0}
.cta-strip{
  position:relative;overflow:hidden;
  border-radius:var(--r28);
  border:1px solid transparent;
  background:
    linear-gradient(rgba(18,26,43,.86),rgba(18,26,43,.86)) padding-box,
    linear-gradient(120deg,rgba(47,227,182,.8),rgba(47,227,182,.05) 48%,rgba(255,182,92,.75)) border-box;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
}
.cta-strip::before{
  content:"";position:absolute;left:-80px;top:-120px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.16),transparent 70%);
  pointer-events:none;
}
.cta-strip h2{font-size:clamp(22px,2.8vw,28px);margin-bottom:8px;position:relative}
.cta-strip p{color:var(--t2);font-size:14.5px;margin:0;position:relative;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,18,31,.2),var(--bg-deep));
}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.footer-brand p{color:var(--t3);font-size:14px;line-height:1.8;margin:16px 0 18px;max-width:360px}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px}
.footer-kw a{
  font-size:12px;padding:4px 10px;border-radius:var(--r999);
  background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF;
}
.footer-kw a:hover{background:rgba(47,227,182,.12);border-color:rgba(47,227,182,.4);color:var(--primary-soft)}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--t1);letter-spacing:.3px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{color:var(--t3);font-size:13.5px;line-height:1.7}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--t3);flex-wrap:wrap;padding:10px 0;
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--t3);min-height:44px}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .faq-layout{grid-template-columns:236px minmax(0,1fr);gap:24px}
}
@media (max-width:1024px){
  .nav-search{max-width:none}
  .hero-copy{max-width:74%}
}
@media (max-width:900px){
  .container{padding:0 18px}
  .nav-top{height:60px;gap:12px}
  .nav-search{display:none}
  .nav-search-toggle{display:grid;width:44px;height:44px;border-radius:12px;place-items:center;border:1px solid var(--line);background:var(--glass);color:var(--t2)}
  .nav-search-toggle:hover{border-color:var(--primary);color:var(--primary)}
  .nav-actions .btn{display:none}
  .nav-sub{max-height:none;overflow-x:auto}
  .site-header.scrolled .nav-sub{max-height:46px;opacity:1;border-top-color:var(--line-soft)}
  .nav-sub-inner{height:46px;gap:2px}
  .nav-sub-right{display:none}
  .page-hero{min-height:0}
  .hero-inner{padding:36px 0 32px}
  .hero-copy{max-width:100%}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:20px;padding-top:36px}
  .anchor-card{position:static;padding:12px;border-radius:var(--r14)}
  .anchor-title{display:none}
  .anchor-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
  .anchor-link{
    white-space:nowrap;border-left:0;border-bottom:2px solid transparent;
    border-radius:var(--r999);padding:8px 14px;font-size:13.5px;
    background:rgba(255,255,255,.04);
  }
  .anchor-link.active{border-left:0;border-bottom-color:var(--primary)}
  .anchor-note{display:none}
  .related{padding-top:56px}
  .cta-wrap{padding-top:56px}
  .cta-strip{padding:26px;border-radius:var(--r20)}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px}
  .footer-brand{grid-column:1 / -1}
  .site-footer{margin-top:64px}
}
@media (max-width:640px){
  .container{padding:0 14px}
  body{font-size:15.5px;line-height:1.8}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:14.5px}
  .faq-search{height:48px;padding-left:14px;gap:8px}
  .faq-search .btn{min-height:36px;padding:7px 16px;font-size:13.5px}
  .faq-q{font-size:15px;padding:14px 16px;min-height:56px;gap:12px}
  .faq-a-inner{padding:0 16px 16px;font-size:14.5px}
  .group-title{font-size:21px}
  .group-desc{font-size:13px;padding-left:18px}
  .unsolved{padding:22px;border-radius:var(--r14);flex-direction:column;align-items:flex-start}
  .unsolved-actions{width:100%}
  .unsolved-actions .btn{flex:1}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .faq-card{border-radius:var(--r14)}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-main{grid-template-columns:1fr;gap:24px}
  .footer-bottom{justify-content:flex-start}
  .drawer{width:100%;max-width:420px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category5 */
:root{
  --bg-base:#070B14;
  --bg-deep:#0C121F;
  --bg-raise:#121A2B;
  --primary:#2FE3B6;
  --primary-deep:#14B896;
  --primary-soft:#7BF2D6;
  --accent:#FFB65C;
  --accent-soft:#FFD08A;
  --violet:#8B7BFF;
  --t1:#F2F6FF;
  --t2:#B9C4D8;
  --t3:#7C8AA3;
  --line:rgba(255,255,255,.09);
  --glass:rgba(255,255,255,.05);
  --ok:#35E0A1;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --info:#6FA8FF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --shadow-card:0 24px 48px -24px rgba(0,0,0,.8);
  --shadow-primary:0 8px 24px -8px rgba(47,227,182,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,227,182,.28);border-radius:var(--r-sm)}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
section{position:relative}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:14px;font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:600;letter-spacing:-.3px}
.section-title::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--primary-deep))}
.section-desc{color:var(--t2);font-size:15px;line-height:1.7;max-width:560px;margin-top:10px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.4px;color:var(--primary-soft);background:rgba(47,227,182,.10);border:1px solid rgba(47,227,182,.32);padding:5px 12px;border-radius:999px}

/* ---------------- header ---------------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,11,20,.42);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.86);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 28px -18px rgba(0,0,0,.9);
}
.nav-top-inner{
  display:flex;align-items:center;gap:22px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:var(--r-sm);
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 18px -8px rgba(47,227,182,.8);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#04120E;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--t1)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.6px;color:var(--primary-soft);margin-top:2px}

.search-wrap{position:relative;flex:1 1 auto;max-width:520px;margin:0 auto}
.search-bar{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 16px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-bar .s-ico{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--t3);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.search-bar input{
  flex:1 1 auto;min-width:0;background:none;border:0;color:var(--t1);
  font-size:14px;height:100%;padding:0;
}
.search-bar input::placeholder{color:var(--t3)}
.search-bar input:focus{outline:none}
.search-bar:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15);background:rgba(255,255,255,.07)}
.search-btn{
  flex:0 0 auto;height:34px;padding:0 16px;border-radius:999px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;font-size:13px;font-weight:600;
  transition:transform .18s var(--ease),filter .18s var(--ease);
}
.search-btn:hover{filter:brightness(1.06);transform:translateY(-1px)}
.search-btn:active{transform:translateY(1px);filter:brightness(.96)}
.search-hot{
  position:absolute;left:0;right:0;top:calc(100% + 10px);
  display:none;flex-wrap:wrap;gap:8px;padding:12px;
  background:rgba(12,18,31,.96);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:0 24px 48px -28px rgba(0,0,0,.95);
}
.search-wrap:focus-within .search-hot{display:flex}
.search-hot a{
  font-size:12px;color:var(--t2);padding:5px 11px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:all .18s var(--ease);
}
.search-hot a:hover{color:var(--primary);border-color:rgba(47,227,182,.5);background:rgba(47,227,182,.08)}

.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:999px;
  font-size:14px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120E;box-shadow:var(--shadow-primary);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px -10px rgba(47,227,182,.75)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-amber{
  background:linear-gradient(135deg,var(--accent),#E89B3C);
  color:#241404;box-shadow:0 10px 26px -10px rgba(255,182,92,.65);
}
.btn-amber:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 14px 32px -12px rgba(255,182,92,.8)}
.btn-amber:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(47,227,182,.08)}
.btn-ghost:active{background:rgba(47,227,182,.14);transform:translateY(1px)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:13px}
.btn:disabled{background:rgba(255,255,255,.06);color:var(--t3);box-shadow:none;cursor:not-allowed;border-color:transparent}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--primary-soft);font-size:14px;font-weight:600}
.link-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease)}
.link-more:hover{color:var(--primary)}
.link-more:hover svg{transform:translateX(3px)}

.burger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:all .18s var(--ease);
}
.burger svg{width:20px;height:20px;fill:none;stroke:var(--t1);stroke-width:1.7;stroke-linecap:round}
.burger:hover{border-color:var(--primary);background:rgba(47,227,182,.1)}
.mobile-search-btn{display:none;width:44px;height:44px;place-items:center;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04)}
.mobile-search-btn svg{width:19px;height:19px;fill:none;stroke:var(--t1);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

.nav-sub{
  border-top:1px solid var(--line);
  max-height:46px;overflow:hidden;
  transition:max-height .28s var(--ease),opacity .22s var(--ease);
}
.site-header.is-scrolled .nav-sub{max-height:0;opacity:0;border-top-color:transparent}
.nav-sub-inner{display:flex;align-items:center;gap:26px;height:46px}
.nav-sub-link{
  font-size:14px;color:var(--t2);position:relative;height:46px;
  display:inline-flex;align-items:center;white-space:nowrap;
}
.nav-sub-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-sub-link:hover{color:var(--t1)}
.nav-sub-link:hover::after,.nav-sub-link.active::after{transform:scaleX(1)}
.nav-sub-link.active{color:var(--primary)}
.nav-sub-right{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--t3);white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(53,224,161,.16)}

/* drawer */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:200;
  background:rgba(10,15,26,.98);border-left:1px solid var(--line);
  box-shadow:-30px 0 60px -30px rgba(0,0,0,.95);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:14px;color:var(--t2);letter-spacing:.4px}
.drawer-close{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--line)}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:var(--t1);stroke-width:1.7;stroke-linecap:round}
.drawer-close:hover{border-color:var(--primary)}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--t2);
  border:1px solid transparent;transition:all .18s var(--ease);
}
.drawer-list a:hover,.drawer-list a.active{color:var(--primary);background:rgba(47,227,182,.08);border-color:rgba(47,227,182,.28)}
.drawer-list a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.6}
.drawer-note{font-size:12px;color:var(--t3);line-height:1.8;border-top:1px solid var(--line);padding-top:14px}

/* ---------------- breadcrumbs ---------------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--t3);padding:24px 0 0}
.crumbs a:hover{color:var(--primary)}
.crumbs span{color:var(--t2)}

/* ---------------- page hero ---------------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background-image:linear-gradient(105deg,rgba(7,11,20,.94),rgba(7,11,20,.66)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;opacity:.35;mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
}
.page-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
  padding:44px 0 48px;min-height:260px;
}
.page-hero h1{
  font-size:clamp(28px,3.8vw,42px);line-height:1.18;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 14px;max-width:640px;
}
.page-hero h1 .hl{color:var(--primary)}
.page-hero .lead{color:var(--t2);font-size:15px;line-height:1.8;max-width:560px}
.hero-inline-search{
  margin-top:22px;max-width:520px;display:flex;align-items:center;gap:10px;
  height:46px;padding:0 6px 0 16px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.hero-inline-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.15)}
.hero-inline-search svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--t3);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.hero-inline-search input{flex:1;min-width:0;background:none;border:0;color:var(--t1);font-size:14px;height:100%}
.hero-inline-search input::placeholder{color:var(--t3)}
.hero-inline-search input:focus{outline:none}
.hero-inline-search button{
  height:34px;padding:0 16px;border-radius:999px;font-size:13px;font-weight:600;color:#04120E;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.10);aspect-ratio:16/10;
  box-shadow:0 30px 60px -34px rgba(0,0,0,.95);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(47,227,182,.10),rgba(7,11,20,.55))}
.hero-figure .fig-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:rgba(12,18,31,.82);border:1px solid rgba(47,227,182,.4);color:var(--primary-soft);
}

/* ---------------- flow ---------------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.flow-step{position:relative;padding:22px 20px;border-radius:var(--r-lg);background:var(--bg-raise);border:1px solid rgba(255,255,255,.07);transition:all .22s var(--ease)}
.flow-step:hover{border-color:rgba(255,255,255,.12);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.flow-step::after{
  content:"";position:absolute;right:-20px;top:44px;width:20px;height:0;
  border-top:1px dashed rgba(47,227,182,.45);
}
.flow-step:last-child::after{display:none}
.flow-num{display:flex;align-items:baseline;gap:8px;font-size:34px;line-height:1;font-weight:700;color:var(--accent);letter-spacing:-1px;font-variant-numeric:tabular-nums}
.flow-node{position:absolute;right:18px;top:24px;width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(47,227,182,.16)}
.flow-step h3{font-size:17px;line-height:1.45;font-weight:600;margin:12px 0 8px}
.flow-step p{font-size:14px;color:var(--t2);line-height:1.75}

/* ---------------- guide cards ---------------- */
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.guide-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;border-radius:var(--r-lg);background:var(--bg-raise);
  border:1px solid rgba(255,255,255,.07);
  transition:all .22s var(--ease);
}
.guide-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.12);box-shadow:var(--shadow-card)}
.guide-card-head{display:flex;align-items:center;gap:12px}
.guide-index{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:14px;font-weight:700;color:#B7ACFF;
  background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);
}
.guide-card h3{font-size:17px;line-height:1.45;font-weight:600}
.guide-card p{font-size:14px;color:var(--t2);line-height:1.78;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.guide-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.4px;
  padding:4px 10px;border-radius:999px;
  background:rgba(139,123,255,.14);border:1px solid rgba(139,123,255,.35);color:#B7ACFF;
}
.tag-primary{background:rgba(47,227,182,.12);border-color:rgba(47,227,182,.4);color:var(--primary-soft)}
.tag-amber{background:rgba(255,182,92,.12);border-color:rgba(255,182,92,.4);color:var(--accent-soft)}

/* ---------------- sidebar note ---------------- */
.guide-layout{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.note-card{
  position:sticky;top:110px;
  padding:24px;border-radius:var(--r-xl);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 1px 0 rgba(255,255,255,.12) inset;
}
.note-card h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.note-card h3 svg{width:20px;height:20px;fill:none;stroke:var(--primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.note-list li{display:flex;gap:9px;font-size:14px;color:var(--t2);line-height:1.7;padding:9px 0;border-bottom:1px solid var(--line)}
.note-list li:last-child{border-bottom:0}
.note-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:11px}
.note-card .btn{width:100%;margin-top:16px}

/* ---------------- faq ---------------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
.faq-intro p{color:var(--t2);font-size:15px;line-height:1.8;margin:14px 0 22px;max-width:360px}
.faq-list{background:var(--glass);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-xl);padding:8px;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.faq-item{border-radius:var(--r-md);transition:background .2s var(--ease)}
.faq-item + .faq-item{margin-top:4px}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;font-size:16px;line-height:1.6;font-weight:600;text-align:left;color:var(--t1);
  border-radius:var(--r-md);border-left:3px solid transparent;
  transition:all .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q .ico{flex:0 0 auto;width:20px;height:20px;position:relative}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;background:var(--t3);border-radius:2px;transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-q .ico::before{left:9px;top:2px;width:2px;height:16px}
.faq-q .ico::after{top:9px;left:2px;height:2px;width:16px}
.faq-q:hover .ico::before,.faq-q:hover .ico::after{background:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 18px 18px 18px;font-size:15px;line-height:1.85;color:var(--t2)}
.faq-item.is-open{background:rgba(47,227,182,.04);border-left:3px solid var(--primary)}
.faq-item.is-open .faq-q{border-left-color:transparent;color:var(--t1)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-item.is-open .faq-q .ico::before{transform:rotate(90deg);background:var(--primary)}
.faq-item.is-open .faq-q .ico::after{background:var(--primary)}

/* ---------------- cta ---------------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:34px 36px;border-radius:var(--r-xl);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 1px 0 rgba(255,255,255,.12) inset;
}
.cta-band::before{
  content:"";position:absolute;left:-70px;top:-90px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,182,.55),transparent 68%);
  filter:blur(120px);opacity:.18;pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3;font-weight:600;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--t2);line-height:1.75;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------------- footer ---------------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-deep);margin-top:0}
.site-footer::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,182,.55),rgba(255,182,92,.35),transparent);
}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px;padding:56px 0 40px}
.footer-brand p{font-size:14px;color:var(--t2);line-height:1.8;margin:16px 0 18px;max-width:340px}
.footer-kw{display:flex;flex-wrap:wrap;gap:8px}
.footer-kw a{font-size:12px;color:var(--t3);padding:4px 10px;border-radius:999px;border:1px solid var(--line);transition:all .18s var(--ease)}
.footer-kw a:hover{color:var(--primary);border-color:rgba(47,227,182,.45);background:rgba(47,227,182,.07)}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--t1);letter-spacing:.4px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li span{font-size:13px;color:var(--t3);line-height:1.7;transition:color .18s var(--ease)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 0;border-top:1px solid var(--line);
}
.footer-bottom p{font-size:12px;color:var(--t3);line-height:1.7}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t3);transition:color .18s var(--ease)}
.to-top svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:var(--primary)}

/* ---------------- responsive ---------------- */
@media (max-width:1200px){
  .guide-layout{grid-template-columns:1fr 280px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step::after{display:none}
}
@media (max-width:1024px){
  .nav-sub-inner{gap:20px;overflow-x:auto;scrollbar-width:none}
  .nav-sub-inner::-webkit-scrollbar{display:none}
  .page-hero-inner{grid-template-columns:1fr;min-height:0;padding:36px 0 40px}
  .hero-figure{max-width:520px}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:72px 0}
}
@media (max-width:900px){
  .container{padding:0 18px}
  .nav-top-inner{height:64px;gap:12px}
  .search-wrap{display:none}
  .mobile-search-btn{display:grid}
  .site-header.mobile-search-open .search-wrap{
    display:block;position:absolute;left:18px;right:18px;top:calc(100% + 10px);
    max-width:none;margin:0;
  }
  .site-header.mobile-search-open .search-hot{position:static;margin-top:10px;display:flex}
  .nav-actions .btn-primary{display:none}
  .brand-text strong{font-size:15px}
  .guide-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .guide-layout{grid-template-columns:1fr}
  .note-card{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:640px){
  .container{padding:0 14px}
  .section{padding:56px 0}
  .page-hero-inner{padding:28px 0 32px;gap:22px}
  .page-hero h1{font-size:26px;margin:14px 0 12px}
  .flow{grid-template-columns:1fr;gap:14px}
  .flow-step{padding:18px}
  .flow-num{font-size:28px}
  .flow-step::after{display:none}
  .guide-card{padding:20px;border-radius:var(--r-md)}
  .cta-band{padding:22px;border-radius:var(--r-lg)}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .search-btn{padding:0 12px}
  .faq-q{font-size:15px;padding:14px}
  .footer-main{grid-template-columns:1fr;padding:40px 0 28px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}