/* roulang page: index */
:root{
  --bg-0:#0B0C0F;
  --bg-1:#15171C;
  --bg-2:#1E2128;
  --line:rgba(255,255,255,.08);
  --brand:#FF6A2B;
  --brand-deep:#D9421A;
  --accent:#35C4B5;
  --ink:#F3F4F6;
  --ink-2:#A7ABB6;
  --ink-3:#6C717C;
  --paper:#F4F1EA;
  --paper-ink:#1A1B1E;
  --paper-ink-2:#5A5D63;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --shadow:inset 0 1px 0 rgba(255,255,255,.04), 0 20px 48px rgba(0,0,0,.45);
  --shadow-hover:inset 0 1px 0 rgba(255,255,255,.06), 0 28px 60px rgba(0,0,0,.6);
  --t:320ms cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit;margin:0}
button{background:none;border:0;cursor:pointer}
time,.num{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#0B0C0F;padding:10px 18px;border-radius:0 0 10px 0;z-index:999}
.skip-link:focus{left:0}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
@media (max-width:639px){
  .container{padding:0 20px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
}

.section{padding:56px 0;position:relative}
@media (min-width:641px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
@media (min-width:1440px){.section{padding:120px 0}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:0}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:640px}
.link-more{color:var(--accent);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:var(--t)}
.link-more:hover{color:var(--brand);gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;transition:var(--t);
}
.btn-primary{background:var(--brand);color:#0B0C0F}
.btn-primary:hover{background:#FF8148;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,43,.28)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,255,255,.06);transform:translateY(-2px)}
.btn-dark{background:var(--paper-ink);color:var(--paper)}
.btn-dark:hover{background:#000;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:84px;
  display:flex;align-items:center;transition:height var(--t),background var(--t),border-color var(--t);
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{height:64px;background:rgba(11,12,15,.92);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--brand);position:relative;flex:0 0 auto;transition:var(--t)}
.brand-mark::after{content:"";position:absolute;left:9px;top:7px;border-left:9px solid #0B0C0F;border-top:6px solid transparent;border-bottom:6px solid transparent}
.brand-text{font-size:19px;font-weight:700;letter-spacing:0;transition:font-size var(--t)}
.site-header.is-stuck .brand-text{font-size:17px}
.brand:hover .brand-mark{transform:rotate(-6deg)}
.main-nav ul{display:flex;align-items:center;gap:6px}
.main-nav a{
  display:inline-block;padding:10px 14px;border-radius:8px;font-size:15px;color:var(--ink-2);
  position:relative;transition:var(--t);
}
.main-nav a:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;transition:var(--t);
}
.icon-btn:hover{color:var(--ink);border-color:var(--brand)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:16px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .icon-btn.search-trigger{display:none}
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;background:var(--bg-0);z-index:200;
  display:flex;flex-direction:column;padding:24px 20px 32px;
  transform:translateX(100%);transition:transform var(--t);visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer nav a{display:flex;align-items:center;justify-content:space-between;font-size:20px;line-height:1;padding:19px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto}
.drawer-foot p{color:var(--ink-3);font-size:13px;margin:18px 0 0}

/* 搜索层 */
.search-layer{
  position:fixed;top:0;left:0;right:0;z-index:140;background:rgba(11,12,15,.96);
  border-bottom:1px solid var(--line);padding:26px 0 30px;transform:translateY(-100%);
  transition:transform var(--t);visibility:hidden;
}
.search-layer.is-open{transform:translateY(0);visibility:visible}
.search-layer .search-row{display:flex;gap:12px;align-items:center}
.search-layer input{
  flex:1;height:48px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--bg-1);padding:0 16px;color:var(--ink);
}
.search-layer input::placeholder{color:var(--ink-3)}
.search-layer input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,106,43,.18);outline:none}
.search-hint{color:var(--ink-3);font-size:13px;margin-top:12px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:520px;height:72vh;display:flex;align-items:center;overflow:hidden}
@media (min-width:641px){.hero{height:80vh}}
@media (min-width:1024px){.hero{height:min(88vh,820px)}}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;animation:kenburns 24s ease-in-out infinite alternate;
}
@keyframes kenburns{from{transform:scale(1) translate3d(0,0,0)}to{transform:scale(1.08) translate3d(-1.2%,-1.4%,0)}}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(11,12,15,.95) 0%,rgba(11,12,15,.85) 38%,rgba(11,12,15,.25) 72%,rgba(11,12,15,0) 100%),
    linear-gradient(0deg,rgba(11,12,15,1) 2%,rgba(11,12,15,.4) 34%,rgba(11,12,15,0) 70%);
}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:64px}
.hero-copy{max-width:680px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  letter-spacing:.06em;border:1px solid rgba(53,196,181,.32);background:rgba(53,196,181,.12);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:700;margin-bottom:18px}
.hero-sub{font-size:clamp(16px,1.4vw,19px);color:var(--ink-2);max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--ink-3)}
.hero-meta li{display:flex;align-items:center;gap:14px}
.hero-meta li+li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block}
.hero-scroll{
  position:absolute;right:24px;bottom:36px;z-index:2;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-3);writing-mode:vertical-rl;letter-spacing:.16em;
}
@media (max-width:1023px){.hero-scroll{display:none}}

/* ---------- 横滑片库 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;margin:0 -4px;scrollbar-width:none;scroll-behavior:smooth;
}
.rail::-webkit-scrollbar{display:none}
.rail>li{scroll-snap-align:start;flex:0 0 200px;list-style:none}
@media (min-width:1024px){.rail>li{flex:0 0 260px}}
.rail-nav{display:none}
@media (min-width:1024px){
  .rail-nav{display:flex;gap:10px;position:absolute;top:-64px;right:0}
  .rail-nav button{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink-2);
    display:inline-flex;align-items:center;justify-content:center;transition:var(--t);background:var(--bg-1);
  }
  .rail-nav button:hover{color:var(--brand);border-color:var(--brand)}
}
.card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:var(--t);display:block;height:100%;
}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.card-cover{position:relative;overflow:hidden;background:var(--bg-2)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);outline:1px solid rgba(255,255,255,.06);outline-offset:-1px}
.card:hover .card-cover img{transform:scale(1.04)}
.ratio-2x3{aspect-ratio:2/3}
.ratio-16x9{aspect-ratio:16/9}
.ratio-4x3{aspect-ratio:4/3}
.ratio-1x1{aspect-ratio:1/1}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;background:rgba(53,196,181,.12);color:var(--accent);
}
.badge-brand{background:var(--brand);color:#0B0C0F}
.cover-badge{position:absolute;left:10px;top:10px;z-index:2}
.cover-len{
  position:absolute;right:10px;top:10px;z-index:2;font-size:12px;color:var(--ink);
  background:rgba(11,12,15,.72);border:1px solid var(--line);border-radius:999px;padding:3px 10px;
}
.card-body{padding:16px}
.card-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px;transition:var(--t);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--brand)}
.card-sub{font-size:13px;color:var(--ink-3);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 热播推荐 ---------- */
.hot-main{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-1);transition:var(--t);display:block;height:100%}
.hot-main:hover{border-color:var(--brand);box-shadow:var(--shadow-hover)}
.hot-main .card-cover{aspect-ratio:16/9}
.hot-main:hover .card-cover img{transform:scale(1.04)}
.hot-main-body{position:absolute;inset:auto 0 0 0;padding:28px;z-index:2;
  background:linear-gradient(0deg,rgba(11,12,15,.96) 8%,rgba(11,12,15,.62) 52%,rgba(11,12,15,0) 100%)}
.hot-main-body h3{font-size:clamp(20px,2.4vw,28px);line-height:1.35;font-weight:700;margin:12px 0 10px}
.hot-main-body p{color:var(--ink-2);font-size:15px;line-height:1.7;max-width:560px;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-list{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--bg-1);height:100%}
.hot-item{display:flex;gap:14px;align-items:center;padding:16px;border-bottom:1px solid var(--line);transition:var(--t)}
.hot-item:last-child{border-bottom:0}
.hot-item:hover{background:var(--bg-2)}
.hot-item img{width:64px;height:64px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.hot-item h4{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:6px}
.hot-item:hover h4{color:var(--brand)}
.hot-item span{font-size:13px;color:var(--ink-3)}
.hot-item .arrow{margin-left:auto;color:var(--ink-3);transition:var(--t)}
.hot-item:hover .arrow{color:var(--brand);transform:translateX(4px)}

/* ---------- 片单分区 A ---------- */
.sticky-label{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.sticky-label h3{font-size:20px;font-weight:600}
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  padding:7px 15px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:var(--t);
}
.chip:hover{border-color:var(--brand);color:var(--ink)}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#0B0C0F;font-weight:600}
.plan-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;transition:var(--t);display:flex;flex-direction:column;gap:12px;
}
.plan-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.plan-num{font-size:13px;color:var(--brand);letter-spacing:.08em;font-weight:700}
.plan-card h4{font-size:18px;font-weight:600;line-height:1.5}
.plan-card p{font-size:15px;color:var(--ink-2);line-height:1.7}
.plan-card .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
@media (min-width:1024px){
  .plan-offset-1{transform:translateY(28px)}
  .plan-offset-1:hover{transform:translateY(24px)}
}

/* ---------- 片单分区 B ---------- */
.rank-list{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--bg-1)}
.rank-item{display:flex;align-items:center;gap:24px;padding:22px 24px;border-bottom:1px solid var(--line);transition:var(--t)}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:var(--bg-2)}
.rank-num{font-size:30px;font-weight:700;color:var(--brand);line-height:1;flex:0 0 48px;transition:var(--t)}
.rank-item:hover .rank-num{transform:translateX(4px)}
.rank-body{flex:1;min-width:0}
.rank-body h4{font-size:17px;font-weight:600;margin-bottom:6px}
.rank-body p{font-size:14px;color:var(--ink-3);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.rank-item .arrow{color:var(--ink-3);transition:var(--t);flex:0 0 auto}
.rank-item:hover .arrow{color:var(--brand);transform:translateX(4px)}

/* ---------- 米白资讯区 ---------- */
.paper{background:var(--paper);color:var(--paper-ink);border-radius:0}
.paper .section-head h2{color:var(--paper-ink)}
.paper .section-head p{color:var(--paper-ink-2)}
.paper .link-more{color:var(--brand-deep)}
.paper .link-more:hover{color:var(--brand)}
.paper-card{
  display:block;background:#fff;border:1px solid rgba(26,27,30,.08);border-radius:var(--r-card);
  overflow:hidden;transition:var(--t);height:100%;
}
.paper-card:hover{transform:translateY(-4px);box-shadow:0 24px 48px rgba(26,27,30,.14)}
.paper-main{display:grid;grid-template-columns:1fr;gap:0}
@media (min-width:768px){.paper-main{grid-template-columns:minmax(0,42%) minmax(0,58%)}}
.paper-main .paper-cover{aspect-ratio:4/3;overflow:hidden;background:#E7E3DA}
.paper-main .paper-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.paper-main:hover .paper-cover img{transform:scale(1.04)}
.paper-main .paper-body{padding:28px}
.paper-body h3{font-size:clamp(19px,2.2vw,24px);line-height:1.45;font-weight:700;color:var(--paper-ink);margin:12px 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.paper-card:hover .paper-body h3{color:var(--brand-deep)}
.paper-body p{font-size:15px;line-height:1.75;color:var(--paper-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.paper-meta{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:13px;color:var(--paper-ink-2)}
.paper-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--brand);display:inline-block}
.paper-sm .paper-cover{aspect-ratio:16/10;overflow:hidden;background:#E7E3DA}
.paper-sm .paper-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.paper-sm:hover .paper-cover img{transform:scale(1.04)}
.paper-sm .paper-body{padding:18px}
.paper-sm .paper-body h3{font-size:17px;font-weight:600;-webkit-line-clamp:2}
.paper-sm .paper-body p{-webkit-line-clamp:2;font-size:14px}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed rgba(26,27,30,.22);border-radius:var(--r-lg);background:rgba(255,255,255,.55);
  padding:36px 20px;text-align:center;
}
.empty-state svg{color:rgba(26,27,30,.35)}
.empty-state p{color:var(--paper-ink-2);font-size:15px}
.empty-state a{color:var(--brand-deep);font-weight:600;font-size:14px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--bg-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:24px;height:24px;flex:0 0 auto;color:var(--brand)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;background:currentColor;transform:translate(-50%,-50%);transition:transform var(--t)}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.2,.7,.2,1)}
.faq-a-inner{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand);color:#0B0C0F;border-radius:var(--r-lg);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(11,12,15,.78);max-width:560px}
.cta-band .btn-dark{flex:0 0 auto}
@media (max-width:767px){.cta-band{padding:30px 22px}.cta-band .btn-dark{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col p{font-size:14px;color:var(--ink-3);line-height:1.8;max-width:320px}
.footer-col h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--ink-2);transition:var(--t)}
.footer-col ul a:hover{color:var(--brand)}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);transition:var(--t)}
.footer-social a:hover{color:var(--brand);border-color:var(--brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 640ms cubic-bezier(.2,.7,.2,1),transform 640ms cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .hero-bg{animation:none}
}

/* roulang page: article */
:root{
  --bg-0:#0B0C0F;
  --bg-1:#15171C;
  --bg-2:#1E2128;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6A2B;
  --brand-deep:#D9421A;
  --accent:#35C4B5;
  --ink:#F3F4F6;
  --ink-2:#A7ABB6;
  --ink-3:#6C717C;
  --paper:#F4F1EA;
  --paper-2:#EDE9E0;
  --paper-ink:#1A1B1E;
  --paper-ink-2:#5A5D63;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 20px 48px rgba(0,0,0,.45);
  --shadow-hover:0 1px 0 rgba(255,255,255,.06) inset, 0 28px 60px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.2,1);
  --sec:120px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .32s var(--ease),border-color .32s var(--ease),background-color .32s var(--ease)}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.25}
p{margin:0}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(255,106,43,.32);color:#fff}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.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}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:84px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(11,12,15,.88) 0%,rgba(11,12,15,0) 100%);
  transition:height .32s var(--ease),background-color .32s var(--ease),border-color .32s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(11,12,15,.92);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:22px;height:22px;border-radius:6px;background:var(--brand);
  position:relative;display:inline-block;flex:none;
  transition:transform .32s var(--ease);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-38%,-50%);
  width:0;height:0;
  border-left:8px solid var(--bg-0);
  border-top:5px solid transparent;
  border-bottom:5px solid transparent;
}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.05)}
.brand-text{font-size:18px;font-weight:700;letter-spacing:0;color:var(--ink);white-space:nowrap}
.site-header.is-scrolled .brand-text{font-size:17px}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  display:inline-block;position:relative;padding:6px 0;
  font-size:15px;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand);font-weight:600}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);color:var(--ink-2);
  transition:color .32s var(--ease),border-color .32s var(--ease),background-color .32s var(--ease);
}
.icon-btn:hover{color:var(--ink);border-color:var(--brand);background:rgba(255,255,255,.06)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:999px;
  background:transparent;border:1px solid var(--line);position:relative;
  transition:border-color .32s var(--ease),background-color .32s var(--ease);
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:16px;height:1.5px;background:var(--ink);
  transform:translateX(-50%);transition:transform .32s var(--ease),opacity .32s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-.75px}
.nav-toggle span::before{content:"";left:0;transform:translateX(0);top:-5px}
.nav-toggle span::after{content:"";left:0;transform:translateX(0);top:5px}
.nav-toggle[aria-expanded="true"]{border-color:var(--brand)}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(0) rotate(45deg);top:0;background:var(--brand)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(0) rotate(-45deg);top:0;background:var(--brand)}

/* ---------- Drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg-0);
  transform:translateY(-100%);visibility:hidden;
  transition:transform .32s var(--ease),visibility .32s var(--ease);
  padding:96px 24px 48px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);visibility:visible}
.nav-drawer .drawer-close{
  position:absolute;top:22px;right:24px;width:40px;height:40px;border-radius:999px;
  background:transparent;border:1px solid var(--line);color:var(--ink);font-size:18px;line-height:1;
}
.nav-drawer .drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.nav-drawer ul{display:flex;flex-direction:column}
.nav-drawer ul a{
  display:block;font-size:20px;line-height:56px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.nav-drawer ul a:hover,.nav-drawer ul a.is-active{color:var(--brand)}
.drawer-foot{margin-top:32px;display:flex;flex-direction:column;gap:16px}
.drawer-foot p{font-size:13px;color:var(--ink-3);line-height:1.7}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),background-color .32s var(--ease),border-color .32s var(--ease),color .32s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#0B0C0F}
.btn-primary:hover{background:#FF7C44;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,43,.28);color:#0B0C0F}
.btn-primary:active{background:var(--brand-deep);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,255,255,.06);color:var(--ink);transform:translateY(-2px)}

/* ---------- Page offset ---------- */
.page-main{padding-top:150px}
@media (max-width:1024px){.page-main{padding-top:126px}}
@media (max-width:640px){.page-main{padding-top:110px}}

/* ---------- Breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);margin-bottom:22px}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--ink-3);opacity:.6}
.breadcrumb .current{color:var(--ink-2);max-width:32ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article head ---------- */
.article-head{max-width:920px}
.article-head h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;letter-spacing:0;margin-bottom:20px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
  padding-bottom:24px;border-bottom:1px solid var(--line);
}
.dot{width:4px;height:4px;border-radius:50%;background:var(--brand);display:inline-block;flex:none}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.06em;
  background:rgba(53,196,181,.12);color:var(--accent);
  transition:background-color .32s var(--ease),color .32s var(--ease);
}
a.badge:hover{background:var(--brand);color:#0B0C0F}

/* ---------- Article layout ---------- */
.article-layout{display:block;margin-top:40px}
@media (min-width:1200px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;align-items:start}
}
.reading-card{
  background:var(--paper);
  border-radius:var(--r-lg);
  padding:64px 56px;
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
@media (max-width:1024px){.reading-card{padding:44px 36px}}
@media (max-width:640px){.reading-card{padding:26px 20px;border-radius:var(--r-card)}}

.article-body{max-width:760px;margin:0 auto;color:var(--paper-ink);font-size:17px;line-height:1.9}
.article-body p{margin:0 0 1.15em;color:var(--paper-ink-2)}
.article-body > p:first-of-type{color:var(--paper-ink)}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;
  margin:48px 0 16px;color:var(--paper-ink);
  padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;
  background:var(--brand);border-radius:3px;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;line-height:1.4;margin:32px 0 12px;color:var(--paper-ink)}
.article-body h4{font-size:17px;line-height:1.5;margin:24px 0 10px;color:var(--paper-ink)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:0 0 .5em;color:var(--paper-ink-2)}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;
  border-left:3px solid var(--brand);
  background:var(--paper-2);color:#3A3D42;
  border-radius:0 12px 12px 0;
}
.article-body blockquote p{margin:0;color:#3A3D42}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--brand)}
.article-body img{border-radius:12px;margin:24px 0;border:1px solid rgba(26,27,30,.08)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;line-height:1.6;color:var(--paper-ink-2);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 10px;text-align:left;border-bottom:1px solid #DCD6C9;color:var(--paper-ink-2)}
.article-body th{color:var(--paper-ink);font-weight:700}
.article-body hr{border:0;border-top:1px solid #DCD6C9;margin:36px 0}
.article-body strong{color:var(--paper-ink)}

/* ---------- Empty state ---------- */
.empty-state{max-width:560px;margin:0 auto;text-align:center;padding:32px 0}
.empty-graphic{
  width:96px;height:96px;margin:0 auto 24px;border-radius:20px;
  background:var(--paper-2);border:1px solid #DCD6C9;
  display:flex;align-items:center;justify-content:center;
}
.empty-graphic svg{width:40px;height:40px;stroke:var(--brand);fill:none;stroke-width:1.6}
.empty-state h2{font-size:22px;margin-bottom:12px;color:var(--paper-ink)}
.empty-state p{font-size:15px;line-height:1.8;color:var(--paper-ink-2);margin-bottom:26px}
.empty-state .btn-primary{color:#0B0C0F}

/* ---------- TOC ---------- */
.toc{display:none}
@media (min-width:1200px){
  .toc{display:block;position:sticky;top:104px}
}
.toc-title{font-size:13px;letter-spacing:.08em;color:var(--ink-3);font-weight:600;margin-bottom:14px}
.toc ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.toc li a{
  display:block;padding:8px 0 8px 14px;margin-left:-1px;
  border-left:2px solid transparent;
  font-size:14px;line-height:1.5;color:var(--ink-2);
}
.toc li a:hover{color:var(--ink)}
.toc li a.is-current{color:var(--brand);border-left-color:var(--brand)}

/* ---------- Sections ---------- */
.section{padding-top:var(--sec)}
@media (max-width:1024px){:root{--sec:80px}}
@media (max-width:640px){:root{--sec:56px}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25}
.section-head .more{font-size:14px;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px}
.section-head .more:hover{color:var(--brand)}
.section-head .more::after{content:"→";transition:transform .32s var(--ease)}
.section-head .more:hover::after{transform:translateX(4px)}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:62ch}

/* ---------- Related cards ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:1024px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.related-grid{grid-template-columns:1fr}}
.card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.06);pointer-events:none}
.card-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;color:var(--ink)}
.card:hover .card-body h3{color:var(--brand)}
.card-body p{font-size:14px;line-height:1.7;color:var(--ink-2)}
.card-meta{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;margin-top:auto}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:var(--sec);
  background:var(--brand);border-radius:var(--r-lg);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#0B0C0F;
}
.cta-band h2{color:#0B0C0F;font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:10px}
.cta-band p{color:rgba(11,12,15,.78);font-size:15px;line-height:1.7;max-width:56ch}
.cta-band .cta-actions{display:flex;gap:12px;flex:none}
.cta-band .btn-dark{background:#0B0C0F;color:var(--ink)}
.cta-band .btn-dark:hover{background:#1E2128;transform:translateY(-2px)}
.cta-band .btn-outline{border-color:rgba(11,12,15,.32);color:#0B0C0F}
.cta-band .btn-outline:hover{background:rgba(11,12,15,.08);border-color:#0B0C0F;transform:translateY(-2px)}
@media (max-width:768px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .cta-band .cta-actions{width:100%;flex-direction:column}
  .cta-band .cta-actions .btn{width:100%}
}

/* ---------- Footer ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);margin-top:var(--sec);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h3{font-size:14px;letter-spacing:.06em;color:var(--ink);margin-bottom:16px;font-weight:600}
.footer-col p{font-size:14px;line-height:1.85;color:var(--ink-3);max-width:38ch}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
}
.footer-social a:hover{color:var(--brand);border-color:var(--brand)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .header-actions .btn-sm{display:none}
  .breadcrumb .current{max-width:18ch}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --bg-0:#0B0C0F;
  --bg-1:#15171C;
  --bg-2:#1E2128;
  --line:rgba(255,255,255,0.08);
  --brand:#FF6A2B;
  --brand-deep:#D9421A;
  --accent:#35C4B5;
  --ink:#F3F4F6;
  --ink-2:#A7ABB6;
  --ink-3:#6C717C;
  --paper:#F4F1EA;
  --paper-ink:#1A1B1E;
  --paper-ink-2:#5A5D63;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,0.04) inset, 0 20px 48px rgba(0,0,0,0.45);
  --shadow-soft:0 1px 0 rgba(255,255,255,0.04) inset, 0 10px 26px rgba(0,0,0,0.32);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1280px;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink-2);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--accent);text-decoration:none;transition:color .32s var(--ease),border-color .32s var(--ease);}
a:hover,a:focus{color:var(--brand);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(32px,5vw,56px);line-height:1.15;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(255,106,43,.3);color:#fff;}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#0B0C0F;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#0B0C0F;}

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

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:transparent;
  transition:background .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#0B0C0F;border-color:var(--brand);}
.btn-primary:hover{background:#FF8248;border-color:#FF8248;color:#0B0C0F;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,43,.28);}
.btn-primary:active{background:var(--brand-deep);transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,255,255,.06);color:var(--ink);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:9px;}
.btn-block{width:100%;}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;line-height:1;
  padding:6px 12px;border-radius:999px;
  background:rgba(53,196,181,.12);color:var(--accent);
}
.badge-brand{background:var(--brand);color:#0B0C0F;}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:84px;background:transparent;border-bottom:1px solid transparent;
  transition:height .32s var(--ease),background .32s var(--ease),border-color .32s var(--ease);
}
.site-header.is-scrolled{height:64px;background:rgba(11,12,15,.92);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:none;}
.brand-text{font-size:20px;font-weight:700;transition:font-size .32s var(--ease),color .32s var(--ease);}
.site-header.is-scrolled .brand-text{font-size:17px;}
.brand:hover .brand-text{color:var(--brand);}
.brand-mark{width:22px;height:22px;border:2px solid var(--brand);border-radius:6px;position:relative;flex:none;}
.brand-mark::after{content:"";position:absolute;top:5px;left:6px;width:0;height:0;border-left:8px solid var(--brand);border-top:5px solid transparent;border-bottom:5px solid transparent;}

.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{position:relative;display:inline-block;padding:9px 13px;font-size:15px;color:var(--ink-2);}
.main-nav a::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .32s var(--ease);}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);}
.main-nav a.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .32s var(--ease),border-color .32s var(--ease),background .32s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:rgba(255,255,255,.05);}
.nav-toggle{display:none;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:transparent;position:relative;flex:none;}
.nav-toggle span{position:absolute;left:11px;right:11px;top:50%;height:2px;margin-top:-1px;background:var(--ink);border-radius:2px;transition:background .3s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle:hover{border-color:var(--brand);}
.nav-toggle:hover span,.nav-toggle:hover span::before,.nav-toggle:hover span::after{background:var(--brand);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:120;background:var(--bg-0);
  display:flex;flex-direction:column;padding:24px 20px 40px;
  transform:translateX(100%);transition:transform .36s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
body.is-locked{overflow:hidden;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px;}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);font-size:22px;line-height:1;}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-nav a{display:block;padding:18px 2px;font-size:20px;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand);}
.drawer-foot{margin-top:32px;}
.drawer-foot p{margin:18px 0 0;font-size:13px;line-height:1.7;color:var(--ink-3);}

/* ===== 分类页 Hero ===== */
.cat-hero{position:relative;display:flex;align-items:flex-end;min-height:48vh;padding:150px 0 76px;background:#05060A;overflow:hidden;}
.cat-hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.55;}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(11,12,15,.92) 0%,rgba(11,12,15,.62) 48%,rgba(11,12,15,.28) 100%),
    linear-gradient(0deg,rgba(11,12,15,1) 0%,rgba(11,12,15,0) 62%);
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero-inner{max-width:840px;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--ink-3);opacity:.6;}
.breadcrumb .current{color:var(--ink-2);}
.hero-lead{margin:20px 0 0;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:720px;}
.hero-tags{display:flex;align-items:center;gap:18px;margin-top:28px;font-size:13px;color:var(--ink-3);flex-wrap:wrap;}
.hero-tags span{display:inline-flex;align-items:center;gap:18px;}
.hero-tags span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);}
.hero-tags span:first-child::before{display:none;}

/* ===== 板块 ===== */
.section{padding:120px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:52px;}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--brand);margin-bottom:16px;}
.section-head h2{margin-bottom:16px;}
.section-head p{margin:0;color:var(--ink-2);font-size:17px;}

/* ===== 编号要点列表（图文左右交替） ===== */
.point-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:52px 0;border-bottom:1px solid var(--line);}
.point-row:first-of-type{padding-top:8px;}
.point-row:last-child{border-bottom:0;padding-bottom:8px;}
.point-row.is-reverse .point-media{order:2;}
.point-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-soft);}
.point-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .32s var(--ease);}
.point-row:hover .point-media img{transform:scale(1.04);}
.point-num{display:block;font-size:44px;font-weight:700;line-height:1;color:var(--brand);font-variant-numeric:tabular-nums;margin-bottom:16px;}
.point-body h3{margin-bottom:14px;font-size:20px;}
.point-body p{margin:0;color:var(--ink-2);font-size:16px;line-height:1.85;}

/* ===== 表格资料 ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(11,12,15,.6);}
.spec-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
.spec-table th{
  text-align:left;padding:18px 22px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ink);background:rgba(255,255,255,.03);border-bottom:1px solid var(--line);
}
.spec-table td{padding:20px 22px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top;line-height:1.75;}
.spec-table tbody tr:last-child td{border-bottom:0;}
.spec-table tbody tr{transition:background .32s var(--ease);}
.spec-table tbody tr:hover{background:rgba(255,255,255,.03);}
.spec-table td:first-child{color:var(--ink);font-weight:600;}

/* ===== 四步流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.step{position:relative;padding-top:34px;border-top:1px solid var(--line);}
.step::before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px rgba(255,106,43,.14);}
.step-num{display:block;font-size:12px;letter-spacing:.16em;color:var(--brand);margin-bottom:12px;font-variant-numeric:tabular-nums;}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ===== FAQ ===== */
.faq{max-width:900px;margin:0 auto;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .32s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;width:18px;height:18px;flex:none;transition:transform .28s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{margin:0;padding:0 26px 24px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ===== CTA 通栏 ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:52px 56px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#FF6A2B 0%,#D9421A 100%);
  box-shadow:0 24px 60px rgba(217,66,26,.22);
}
.cta-band h2{color:#0B0C0F;margin-bottom:12px;font-size:clamp(22px,2.6vw,32px);}
.cta-band p{margin:0;color:rgba(11,12,15,.78);max-width:580px;font-size:16px;line-height:1.75;}
.cta-actions{display:flex;gap:14px;flex:none;}
.cta-band .btn-primary{background:#0B0C0F;border-color:#0B0C0F;color:#F3F4F6;}
.cta-band .btn-primary:hover{background:#15171C;border-color:#15171C;color:#fff;box-shadow:0 12px 28px rgba(0,0,0,.3);}
.cta-band .btn-ghost{border-color:rgba(11,12,15,.35);color:#0B0C0F;}
.cta-band .btn-ghost:hover{border-color:#0B0C0F;background:rgba(11,12,15,.1);color:#0B0C0F;}

/* ===== 继续浏览 ===== */
.next-list{border-top:1px solid var(--line);}
.next-item{
  display:flex;align-items:center;gap:20px;
  padding:24px 8px;border-bottom:1px solid var(--line);
  color:var(--ink);
  transition:background .32s var(--ease),padding .32s var(--ease);
}
.next-item:hover{background:var(--bg-1);padding-left:22px;color:var(--ink);}
.next-meta{flex:1;min-width:0;}
.next-meta h3{font-size:17px;margin-bottom:6px;transition:color .32s var(--ease);}
.next-item:hover .next-meta h3{color:var(--brand);}
.next-meta p{margin:0;font-size:15px;line-height:1.7;color:var(--ink-3);}
.next-arrow{color:var(--brand);flex:none;transition:transform .32s var(--ease);}
.next-item:hover .next-arrow{transform:translateX(4px);}

/* ===== 页脚 ===== */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:80px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:20px;color:var(--ink);}
.footer-col h3{font-size:15px;color:var(--ink);margin-bottom:20px;letter-spacing:.04em;}
.footer-col p{font-size:15px;line-height:1.8;color:var(--ink-3);margin:0;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{font-size:15px;color:var(--ink-3);}
.footer-col ul a:hover{color:var(--brand);}
.footer-social{display:flex;gap:12px;margin-top:22px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-3);
  transition:color .32s var(--ease),border-color .32s var(--ease),background .32s var(--ease);
}
.footer-social a:hover{color:var(--brand);border-color:var(--brand);background:rgba(255,106,43,.08);}
.footer-bottom{
  margin-top:64px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;
}

/* ===== 入场动效 ===== */
html.js-on .reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
html.js-on .reveal.is-visible{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .section{padding:80px 0;}
  .point-row{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .point-row.is-reverse .point-media{order:0;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:42px 34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .brand-text{font-size:17px;}
  .header-actions .btn{display:none;}
  .cat-hero{padding:120px 0 56px;min-height:52vh;}
  .hero-lead{font-size:16px;}
  .section-head{margin-bottom:34px;}
  .point-num{font-size:34px;}
  .point-body h3{font-size:18px;}
  .steps{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 20px;}
  .faq-a p{padding:0 20px 20px;}
  .cta-band{padding:32px 24px;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:44px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html.js-on .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#0B0C0F;
  --bg-1:#15171C;
  --bg-2:#1E2128;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6A2B;
  --brand-deep:#D9421A;
  --accent:#35C4B5;
  --ink:#F3F4F6;
  --ink-2:#A7ABB6;
  --ink-3:#6C717C;
  --paper:#F4F1EA;
  --paper-ink:#1A1B1E;
  --paper-ink-2:#5A5D63;
  --radius:14px;
  --radius-lg:18px;
  --radius-sm:10px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 20px 48px rgba(0,0,0,.45);
  --shadow-hover:0 1px 0 rgba(255,255,255,.06) inset, 0 28px 60px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--ink);
  font-family:var(--font);font-size:17px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol,dl,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 320ms var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:rgba(255,106,43,.35);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:120px 0}
.section-tight{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:0}
.section-head .link-more{font-size:14px;color:var(--ink-3);white-space:nowrap}
.section-head .link-more:hover{color:var(--brand)}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--accent);margin-bottom:10px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:84px;
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(11,12,15,.72) 0%,rgba(11,12,15,0) 100%);
  transition:height 320ms var(--ease),background 320ms var(--ease);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);opacity:0;transition:opacity 320ms var(--ease)}
.site-header.is-stuck{height:64px;background:rgba(11,12,15,.92)}
.site-header.is-stuck::after{opacity:1}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{width:22px;height:22px;border:2px solid var(--brand);border-radius:5px;position:relative;display:inline-block;flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:7px;height:7px;background:var(--brand);border-radius:1px}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);transition:font-size 320ms var(--ease)}
.site-header.is-stuck .brand-text{font-size:16px}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  display:inline-block;padding:10px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:color 320ms var(--ease),background 320ms var(--ease);
}
.main-nav a:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.main-nav a.is-active{color:var(--brand);background:rgba(255,106,43,.1)}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:color 320ms var(--ease),border-color 320ms var(--ease),background 320ms var(--ease);
}
.icon-btn:hover{color:var(--ink);border-color:var(--line-strong);background:rgba(255,255,255,.06)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform 320ms var(--ease),background 320ms var(--ease),color 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.btn-primary{background:var(--brand);color:#0B0C0F}
.btn-primary:hover{background:#FF7C45;color:#0B0C0F;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,43,.28)}
.btn-primary:active{background:var(--brand-deep);transform:translateY(0)}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--ink);background:rgba(255,255,255,.06)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  position:relative;align-items:center;justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{content:"";position:absolute;width:16px;height:1.5px;background:var(--ink);transition:transform 320ms var(--ease),opacity 320ms var(--ease)}
.nav-toggle span{left:50%;top:50%;transform:translate(-50%,-50%)}
.nav-toggle span::before{transform:translate(-50%,-6px);left:50%;top:50%}
.nav-toggle span::after{transform:translate(-50%,6px);left:50%;top:50%}

/* ---------- search panel ---------- */
.search-panel{
  position:absolute;top:100%;right:24px;width:340px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 260ms var(--ease),transform 260ms var(--ease),visibility 260ms;
}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(6px)}
.search-form{display:flex;gap:8px}
.search-form input{
  flex:1 1 auto;height:48px;padding:0 14px;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--line);color:var(--ink);
  transition:border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.search-form input::placeholder{color:var(--ink-3)}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,106,43,.18)}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg-0);
  display:flex;flex-direction:column;padding:24px;
  transform:translateY(-100%);transition:transform 380ms var(--ease);
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);color:var(--ink);font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:24px}
.drawer-nav a{font-size:20px;line-height:56px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:20px;font-size:13px;color:var(--ink-3);line-height:1.7}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:160px 0 76px;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  transform:scale(1.04);
  animation:kenburns 24s ease-in-out infinite alternate;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,12,15,.95) 0%,rgba(11,12,15,.76) 46%,rgba(11,12,15,.34) 100%),
             linear-gradient(0deg,var(--bg-0) 2%,rgba(11,12,15,0) 62%);
}
.page-hero .container{position:relative;z-index:2}
@keyframes kenburns{from{transform:scale(1.04) translate3d(0,0,0)}to{transform:scale(1.1) translate3d(-1.5%,-1.5%,0)}}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--ink-3);opacity:.6}
.breadcrumb .current{color:var(--ink-2)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:700;
  max-width:800px;margin-bottom:20px;
}
.page-hero .lead{max-width:700px;color:var(--ink-2);font-size:17px;line-height:1.8}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;font-size:13px;color:var(--ink-3)}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--brand)}
.hero-meta strong{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- layout ---------- */
.layout-wrap{align-items:flex-start}
.anchor-col{position:sticky;top:100px}
.anchor-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.anchor-title{font-size:13px;color:var(--ink-3);letter-spacing:.08em;margin-bottom:14px}
.anchor-nav{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  display:block;padding:10px 12px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--ink-2);border-left:2px solid transparent;
  transition:color 320ms var(--ease),background 320ms var(--ease),border-color 320ms var(--ease);
}
.anchor-nav a:hover{color:var(--ink);background:var(--bg-2)}
.anchor-nav a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(255,106,43,.08)}
.anchor-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);line-height:1.7}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:36px}
.timeline::before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:1px;background:var(--line)}
.tl-item{position:relative;margin-bottom:48px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-35.5px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(255,106,43,.14);
}
.tl-item h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:12px}
.tl-item p{color:var(--ink-2);font-size:17px;line-height:1.8;margin-bottom:14px}
.tl-item p:last-child{margin-bottom:0}
.tl-fig{margin:20px 0 8px}
.tl-fig .frame{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);aspect-ratio:16/9;
}
.tl-fig .frame img{width:100%;height:100%;object-fit:cover}
.figcap{font-size:13px;color:var(--ink-3);line-height:1.6;margin-top:10px}
.step-list{counter-reset:step;display:flex;flex-direction:column;gap:14px;margin-top:6px}
.step-list li{
  position:relative;padding-left:52px;color:var(--ink-2);font-size:16px;line-height:1.75;
  min-height:34px;display:flex;align-items:flex-start;
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:15px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.inline-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- badge & chips ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--accent);background:rgba(53,196,181,.12);
}
.badge-brand{color:#0B0C0F;background:var(--brand)}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg-1);color:var(--ink-2);font-size:14px;
  transition:color 320ms var(--ease),border-color 320ms var(--ease),background 320ms var(--ease),transform 320ms var(--ease);
}
.chip:hover{color:var(--ink);border-color:var(--line-strong);transform:translateY(-2px)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#0B0C0F;font-weight:600}

/* ---------- dimension cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.dim-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.dim-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.dim-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.dim-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 480ms var(--ease)}
.dim-card:hover .thumb img{transform:scale(1.04)}
.dim-card .body{padding:18px}
.dim-card h4{font-size:17px;font-weight:600;line-height:1.5;margin:10px 0 8px;transition:color 320ms var(--ease)}
.dim-card:hover h4{color:var(--brand)}
.dim-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;
  transition:border-color 320ms var(--ease),background 320ms var(--ease);
}
.faq-item[open]{border-color:rgba(255,106,43,.45)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 60px 20px 22px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-position:center center,center center;
  background-size:14px 2px,2px 14px;
  background-repeat:no-repeat;
  transition:transform 280ms var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item .faq-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- cta ---------- */
.cta-band{background:var(--brand);color:#0B0C0F;border-radius:var(--radius-lg);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:10px}
.cta-band p{font-size:15px;line-height:1.7;color:rgba(11,12,15,.78);max-width:620px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}
.cta-band .btn-primary{background:#0B0C0F;color:#F3F4F6}
.cta-band .btn-primary:hover{background:#1A1C22;color:#fff}
.cta-band .btn-ghost{border-color:rgba(11,12,15,.35);color:#0B0C0F}
.cta-band .btn-ghost:hover{background:rgba(11,12,15,.08);border-color:#0B0C0F;color:#0B0C0F}

/* ---------- continue cards ---------- */
.continue-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.cont-card{
  display:block;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.cont-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.cont-card .badge{margin-bottom:14px}
.cont-card h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:10px;transition:color 320ms var(--ease)}
.cont-card:hover h3{color:var(--brand)}
.cont-card p{font-size:14px;color:var(--ink-2);line-height:1.7;margin-bottom:16px}
.cont-card .arrow{font-size:14px;color:var(--brand)}

/* ---------- footer ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;letter-spacing:.04em}
.footer-col p{font-size:14px;color:var(--ink-3);line-height:1.8}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--ink-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:color 320ms var(--ease),border-color 320ms var(--ease),background 320ms var(--ease);
}
.footer-social a:hover{color:var(--brand);border-color:var(--brand);background:rgba(255,106,43,.08)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 620ms var(--ease),transform 620ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .section{padding:80px 0}
  .section-tight{padding:64px 0}
  .main-nav{display:none}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero{padding:132px 0 60px}
  .layout-wrap{display:block}
  .anchor-col{position:static;margin-bottom:32px}
  .anchor-card{padding:16px;background:transparent;border:0}
  .anchor-title{display:none}
  .anchor-nav{
    flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;
    scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
  }
  .anchor-nav::-webkit-scrollbar{display:none}
  .anchor-nav a{
    flex:0 0 auto;border-left:0;border:1px solid var(--line);border-radius:999px;
    padding:8px 16px;background:var(--bg-1);scroll-snap-align:start;
  }
  .anchor-nav a.is-current{border-color:var(--brand);background:rgba(255,106,43,.1)}
  .anchor-note{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .continue-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .page-hero{padding:116px 0 48px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .header-actions .icon-btn{display:none}
  .search-panel{right:16px;left:16px;width:auto}
  .card-grid{grid-template-columns:1fr}
  .timeline{padding-left:28px}
  .tl-item::before{left:-27.5px}
  .cta-band{padding:28px 22px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#0B0C0F;
  --bg-1:#15171C;
  --bg-2:#1E2128;
  --line:rgba(255,255,255,.08);
  --brand:#FF6A2B;
  --brand-deep:#D9421A;
  --accent:#35C4B5;
  --ink:#F3F4F6;
  --ink-2:#A7ABB6;
  --ink-3:#6C717C;
  --paper:#F4F1EA;
  --paper-ink:#1A1B1E;
  --paper-ink-2:#5A5D63;
  --r-card:14px;
  --r-media:18px;
  --r-btn:10px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset,0 20px 48px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color 320ms var(--ease),border-color 320ms var(--ease),background-color 320ms var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:0;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
::selection{background:rgba(255,106,43,.3)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:120px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25}
.section-head .section-desc{color:var(--ink-3);font-size:14px;max-width:560px;margin-top:10px}
.text-link{color:var(--accent);font-size:14px;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{color:var(--brand)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform 320ms var(--ease),background-color 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease),color 320ms var(--ease);
}
.btn-primary{background:var(--brand);color:#0B0C0F}
.btn-primary:hover{background:#FF8351;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,43,.28);color:#0B0C0F}
.btn-primary:active{background:var(--brand-deep);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,255,255,.06);color:var(--ink)}
.btn-dark{background:#0B0C0F;color:var(--ink)}
.btn-dark:hover{background:#191b21;transform:translateY(-2px);color:var(--ink)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;line-height:1;
  background:rgba(53,196,181,.12);color:var(--accent);border:1px solid rgba(53,196,181,.22);
}
.badge-solid{background:var(--brand);color:#0B0C0F;border-color:transparent;font-weight:600}
.badge-line{background:rgba(255,255,255,.05);color:var(--ink-2);border-color:var(--line)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--ink-2);background:var(--bg-1);border:1px solid var(--line);
  transition:transform 320ms var(--ease),border-color 320ms var(--ease),color 320ms var(--ease),background-color 320ms var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--ink);transform:translateY(-2px)}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#0B0C0F;font-weight:600}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:84px;
  display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:height 320ms var(--ease),background-color 320ms var(--ease),border-color 320ms var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,12,15,.92) 0%,rgba(11,12,15,0) 100%);
  opacity:1;transition:opacity 320ms var(--ease);
}
.site-header.is-scrolled{height:64px;background:rgba(11,12,15,.92);border-bottom-color:var(--line)}
.site-header.is-scrolled::before{opacity:0}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;position:relative;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
}
.brand-mark::after{
  content:"";position:absolute;left:52%;top:50%;transform:translate(-50%,-50%);
  width:0;height:0;border-style:solid;border-width:5px 0 5px 8px;
  border-color:transparent transparent transparent #0B0C0F;
}
.brand-text{font-size:19px;font-weight:700;color:var(--ink);transition:font-size 320ms var(--ease);white-space:nowrap}
.site-header.is-scrolled .brand-text{font-size:17px}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;display:inline-block;padding:6px 2px;
  font-size:15px;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width 320ms var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;color:var(--ink-2);
  transition:color 320ms var(--ease),border-color 320ms var(--ease),background-color 320ms var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:rgba(255,255,255,.05)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:999px;
  position:relative;flex:0 0 40px;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);width:16px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform 320ms var(--ease),background-color 320ms var(--ease);
}
.nav-toggle span{top:19px}
.nav-toggle span::before{content:"";top:-5px;left:0;transform:none}
.nav-toggle span::after{content:"";top:5px;left:0;transform:none}

/* 搜索面板 */
.search-panel{
  position:absolute;top:calc(100% + 10px);right:24px;width:min(420px,calc(100vw - 48px));
  background:var(--bg-1);border:1px solid var(--line);border-radius:14px;padding:16px;
  box-shadow:var(--shadow);
}
.search-panel[hidden]{display:none}
.search-form{display:flex;gap:10px}
.search-form input{
  flex:1;min-width:0;height:48px;padding:0 14px;border-radius:10px;
  background:var(--bg-2);border:1px solid var(--line);color:var(--ink);
  transition:border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.search-form input::placeholder{color:var(--ink-3)}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.search-hint{font-size:13px;color:var(--ink-3);margin-top:10px}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg-0);padding:20px 20px 32px;
  display:flex;flex-direction:column;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 280ms var(--ease),transform 280ms var(--ease),visibility 280ms;
}
body.drawer-open .nav-drawer{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer-nav a{
  display:block;font-size:20px;line-height:56px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:16px}
.drawer-foot p{font-size:13px;color:var(--ink-3);line-height:1.7}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;min-height:48vh;display:flex;align-items:flex-end;padding:150px 0 56px;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:-2%;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  animation:kenburns 24s ease-in-out infinite alternate;
}
@keyframes kenburns{from{transform:scale(1) translate3d(0,0,0)}to{transform:scale(1.06) translate3d(-1.5%,-1%,0)}}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(11,12,15,.95) 0%,rgba(11,12,15,.8) 42%,rgba(11,12,15,.32) 100%),
    linear-gradient(0deg,rgba(11,12,15,.98) 0%,rgba(11,12,15,.12) 62%);
}
.hero-inner{position:relative;z-index:2;width:100%}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.55}
.page-hero h1{max-width:860px;font-size:clamp(32px,5vw,56px);line-height:1.15}
.hero-lead{max-width:660px;margin-top:18px;color:var(--ink-2);font-size:17px;line-height:1.8}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--brand);display:inline-block}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- 错位卡片栅格 ---------- */
.vgrid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.vcard{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;position:relative;
  transition:transform 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.vcard:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:0 1px 0 rgba(255,255,255,.04) inset,0 24px 54px rgba(0,0,0,.6)}
.vcard:hover h3{color:var(--brand)}
.vcard:hover .vcard-media img{transform:scale(1.04)}
.vcard-media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.vcard-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.vcard-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.06);border-radius:0;pointer-events:none}
.vcard-media .badge{position:absolute;left:12px;top:12px;z-index:2}
.vcard-body{padding:16px 18px 20px}
.vcard-body h3{font-size:18px;line-height:1.45;transition:color 320ms var(--ease)}
.vcard-body p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.7}
.vcard-meta{margin-top:12px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.v-a{grid-column:1/7}
.v-a .vcard-media{aspect-ratio:16/10}
.v-a .vcard-body h3{font-size:22px}
.v-a .vcard-body p{font-size:15px}
.v-b{grid-column:7/10;margin-top:32px}
.v-b .vcard-media{aspect-ratio:3/4}
.v-c{grid-column:10/13;margin-top:64px}
.v-c .vcard-media{aspect-ratio:3/4}
.v-d{grid-column:1/4}
.v-d .vcard-media{aspect-ratio:3/4}
.v-e{grid-column:4/7;margin-top:40px}
.v-e .vcard-media{aspect-ratio:3/4}
.v-f{grid-column:7/13}
.v-f .vcard-media{aspect-ratio:16/9}

/* ---------- 条目清单 ---------- */
.item-list{border-top:1px solid var(--line)}
.item{
  display:flex;align-items:center;gap:20px;padding:16px 20px;border-bottom:1px solid var(--line);
  transition:background-color 320ms var(--ease);
}
.item:hover{background:var(--bg-1)}
.item:hover .item-title{color:var(--brand)}
.item:hover .item-arrow{transform:translateX(4px);color:var(--brand)}
.item-thumb{width:72px;height:72px;flex:0 0 72px;border-radius:10px;overflow:hidden;background:var(--bg-2);position:relative}
.item-thumb img{width:100%;height:100%;object-fit:cover}
.item-main{flex:1;min-width:0}
.item-title{font-size:17px;font-weight:600;line-height:1.5;transition:color 320ms var(--ease)}
.item-desc{margin-top:4px;font-size:14px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item-meta{flex:0 0 auto;display:flex;align-items:center;gap:16px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.item-arrow{color:var(--ink-3);transition:transform 320ms var(--ease),color 320ms var(--ease)}
.item[hidden]{display:none}
.list-empty{
  padding:56px 24px;text-align:center;border-bottom:1px solid var(--line);color:var(--ink-3);font-size:14px;
}
.list-empty .ph{width:56px;height:56px;margin:0 auto 16px;border:1px solid var(--line);border-radius:14px;position:relative;background:var(--bg-2)}
.list-empty .ph::before{content:"";position:absolute;left:12px;right:12px;height:1px;background:var(--line);top:20px;box-shadow:0 8px 0 var(--line),0 16px 0 var(--line)}
.list-empty a{color:var(--accent)}
.list-empty a:hover{color:var(--brand)}

/* ---------- 节奏与标签 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.prose h2{margin-bottom:20px}
.prose p{color:var(--ink-2);font-size:16px;line-height:1.9;margin-bottom:16px}
.side-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:26px}
.side-card h3{font-size:18px;margin-bottom:16px}
.side-card ul li{display:flex;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-2);line-height:1.7}
.side-card ul li:last-child{border-bottom:0;padding-bottom:0}
.side-card .num{color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums;flex:0 0 auto}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;background:var(--bg-1);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.faq-accordion{margin:0;background:transparent;border:0}
.faq-accordion .accordion-item{border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--ink);
  background:transparent;border:0;transition:color 320ms var(--ease),background-color 320ms var(--ease);
}
.faq-accordion .accordion-title:hover{color:var(--brand);background:rgba(255,255,255,.03)}
.faq-accordion .accordion-title::before{display:none!important}
.faq-accordion .accordion-title::after{
  content:"";flex:0 0 18px;width:18px;height:18px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/100% 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 100% no-repeat;
  transition:transform 280ms var(--ease);
}
.faq-accordion .accordion-title[aria-expanded="true"]::after{transform:rotate(45deg)}
.faq-accordion .accordion-content{
  padding:0 24px 22px!important;border:0;background:transparent;
  color:var(--ink-2);font-size:15px;line-height:1.8;
}

/* ---------- 继续浏览 ---------- */
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.next-card{
  display:block;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:transform 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.next-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:0 20px 46px rgba(0,0,0,.5)}
.next-card:hover h3{color:var(--brand)}
.next-card .badge{margin-bottom:16px}
.next-card h3{font-size:18px;transition:color 320ms var(--ease)}
.next-card p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75}
.next-card .arrow{display:inline-block;margin-top:16px;font-size:14px;color:var(--accent);transition:transform 320ms var(--ease)}
.next-card:hover .arrow{transform:translateX(4px)}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background:var(--brand);color:#0B0C0F;border-radius:var(--r-media);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#0B0C0F;font-size:clamp(22px,2.6vw,32px);line-height:1.25}
.cta-band p{margin-top:10px;color:rgba(11,12,15,.72);font-size:15px;max-width:560px}

/* ---------- 页脚 ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:80px 0 56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--ink)}
.footer-col p{color:var(--ink-3);font-size:14px;line-height:1.8}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--ink-2);font-size:14px}
.footer-col ul a:hover{color:var(--brand)}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{
  width:36px;height:36px;border:1px solid var(--line);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
}
.footer-social a:hover{color:var(--brand);border-color:var(--brand);background:rgba(255,255,255,.04)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);color:var(--ink-3);font-size:13px;
}

/* ---------- 入场动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(12px)}
html.js .reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity 620ms var(--ease),transform 620ms var(--ease);
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html.js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:block}
  .header-actions .btn-sm{display:none}
  .section{padding:80px 0}
  .section-tight{padding:56px 0}
  .v-a{grid-column:1/13}
  .v-a .vcard-media{aspect-ratio:16/9}
  .v-b{grid-column:1/7;margin-top:0}
  .v-c{grid-column:7/13;margin-top:0}
  .v-d{grid-column:1/7}
  .v-e{grid-column:7/13;margin-top:0}
  .v-f{grid-column:1/13}
  .split{grid-template-columns:1fr;gap:32px}
  .next-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 40px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:24px}
  .page-hero{min-height:72vh;padding:120px 0 40px}
  .hero-actions .btn{width:100%}
  .v-b,.v-c,.v-d,.v-e{grid-column:1/13;margin-top:0}
  .vcard-media,.v-b .vcard-media,.v-c .vcard-media,.v-d .vcard-media,.v-e .vcard-media{aspect-ratio:16/9}
  .item{gap:14px;padding:14px 14px;align-items:flex-start}
  .item-thumb{width:64px;height:64px;flex:0 0 64px}
  .item-desc{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .item-meta{display:none}
  .item-arrow{display:none}
  .next-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .search-panel{right:20px;left:20px;width:auto}
  .search-form{flex-direction:column}
  .search-form input,.search-form .btn{width:100%}
}
@media (min-width:1440px){
  .container{max-width:1320px}
}