/* roulang page: index */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#0E1116;
  --ink-soft:#2C3138;
  --violet:#4A4664;
  --primary:#E2542C;
  --primary-deep:#B93C1C;
  --accent:#F2B441;
  --night:#12151C;
  --line:rgba(14,17,22,.12);
  --line-dark:rgba(255,255,255,.12);
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --s1:0 1px 2px rgba(14,17,22,.06);
  --s2:0 8px 24px -12px rgba(14,17,22,.18);
  --s3:0 18px 40px -18px rgba(14,17,22,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--primary-deep)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.01em;line-height:1.2}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media screen and (min-width:1440px){.container{max-width:1360px}}

/* ---------- Foundation 覆盖 ---------- */
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-margin-y{margin-top:-12px}
.grid-margin-y>.cell{padding-top:12px;padding-bottom:12px}
.accordion,.tabs,.button,button{font-family:inherit}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#F7F5F0}
.btn-primary:hover{background:var(--primary-deep);color:#F7F5F0;transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(226,84,44,.45)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-light{background:#F7F5F0;color:var(--primary-deep);border-color:#F7F5F0}
.btn-light:hover{background:#fff;color:var(--primary-deep);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#F7F5F0}
.btn-outline-light:hover{border-color:#F7F5F0;color:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);border-bottom:1px solid transparent;padding-bottom:2px;transition:all 180ms var(--ease)}
.text-link .arw{transition:transform 180ms var(--ease)}
.text-link:hover{border-bottom-color:var(--primary)}
.text-link:hover .arw{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow 180ms var(--ease)}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-bar{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo:hover{color:var(--ink)}
.logo-mark{width:28px;height:28px;color:var(--primary);flex:0 0 auto}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;padding:6px 2px}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:8px 16px;
  border-radius:999px;font-size:14px;font-weight:600;color:var(--violet);
  white-space:nowrap;scroll-snap-align:center;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.chip:hover{background:var(--paper-2);color:var(--ink)}
.chip.is-active{background:var(--ink);color:var(--paper)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:transparent;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-nav{display:none;border-top:1px solid var(--line);background:var(--paper);padding:0 24px;max-height:0;overflow:hidden;transition:max-height 240ms var(--ease),padding 240ms var(--ease)}
.mobile-nav.is-open{max-height:420px;padding:16px 24px 24px}
.mobile-nav a{display:block;padding:12px 0;font-size:15.5px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid var(--line)}
.mobile-nav a.is-active{color:var(--primary)}
.mobile-nav .btn{margin-top:16px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 96px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(14,17,22,.05) 1px, transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(150deg, rgba(0,0,0,.85), transparent 62%);
  mask-image:linear-gradient(150deg, rgba(0,0,0,.85), transparent 62%);
}
.hero-grid{position:relative}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--primary);text-transform:uppercase;margin-bottom:18px}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero h1{font-size:clamp(30px,4.6vw,54px);line-height:1.14;font-weight:800;letter-spacing:-.02em}
.hero-rule{width:48px;height:3px;background:var(--primary);margin:24px 0}
.hero-sub{font-size:17px;line-height:1.85;color:var(--violet);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.hero-stat b{display:block;font-size:26px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{display:block;font-size:12.5px;color:var(--violet);margin-top:6px}
.hero-note{margin-top:16px;font-size:12.5px;color:var(--violet)}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--s2);background:var(--paper-2)}
.hero-visual img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.hero-visual:hover img{transform:scale(1.03)}
.hero-star{position:absolute;right:18px;bottom:18px;width:48px;height:48px;padding:11px;border-radius:50%;background:rgba(247,245,240,.94);color:var(--primary)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--paper2{background:var(--paper-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--primary);text-transform:uppercase}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:800;margin-top:12px;letter-spacing:-.02em}
.section-desc{font-size:14.5px;line-height:1.75;color:var(--violet);max-width:60ch;margin-top:12px}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--s1);padding:26px;height:100%;
  display:flex;flex-direction:column;gap:12px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.2)}
.card-num{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--primary)}
.card-tag{font-size:11.5px;font-weight:700;color:var(--primary);border:1px solid rgba(226,84,44,.45);background:rgba(226,84,44,.06);border-radius:999px;padding:3px 10px;display:inline-block;width:fit-content}
.card h3{font-size:20px;font-weight:700;line-height:1.35}
.card p{font-size:14.5px;line-height:1.75;color:var(--violet)}
.card-media{border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:var(--paper-2);margin-bottom:4px}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card .text-link{margin-top:auto}
.stack{display:grid;gap:24px;height:100%}
.stack .card{height:auto}

/* ---------- 场景 ---------- */
.scene-tabs{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;padding-bottom:10px;margin-bottom:30px}
.scene-tabs::-webkit-scrollbar{display:none}
.scene-chip{
  height:40px;padding:0 20px;border-radius:999px;border:1px solid var(--line);background:transparent;
  color:var(--violet);font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;scroll-snap-align:center;
  transition:all 180ms var(--ease);
}
.scene-chip:hover{border-color:rgba(226,84,44,.45);color:var(--ink)}
.scene-chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.scene-panel{display:none}
.scene-panel.is-active{display:block;animation:fadeUp 420ms var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.scene-panel h3{font-size:22px;margin-bottom:14px}
.scene-list{margin-top:20px;display:grid;gap:14px}
.scene-list li{display:flex;gap:12px;font-size:15.5px;line-height:1.8;color:var(--ink-soft)}
.scene-list li::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:11px;border-radius:2px;background:var(--primary)}
.scene-visual{border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;background:var(--paper-2);box-shadow:var(--s2)}
.scene-visual img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.scene-visual:hover img{transform:scale(1.03)}

/* ---------- 深色案例带 ---------- */
.band-night{position:relative;background:var(--night);color:rgba(247,245,240,.82);padding:96px 0;overflow:hidden}
.band-night::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:22px 22px;
}
.band-night .container{position:relative}
.band-night h2{color:#F7F5F0}
.band-night .section-desc{color:rgba(247,245,240,.62)}
.metric{padding:22px 0;border-top:1px solid var(--line-dark)}
.metric:first-child{border-top:0;padding-top:0}
.metric b{display:block;font-size:clamp(32px,4vw,50px);font-weight:800;color:#F7F5F0;font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.02em}
.metric span{display:block;font-size:12.5px;color:rgba(247,245,240,.6);margin-top:8px}
.case-card{background:rgba(255,255,255,.06);border:1px solid var(--line-dark);border-radius:16px;padding:30px}
.case-card blockquote{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-size:18px;line-height:1.85;color:#F7F5F0}
.case-sign{margin-top:22px;font-size:13px;color:rgba(247,245,240,.62)}
.case-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.case-tag{font-size:12.5px;color:rgba(247,245,240,.78);border:1px solid var(--line-dark);border-radius:999px;padding:5px 12px}

/* ---------- 价格 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--s1);padding:30px;display:flex;flex-direction:column;gap:16px;transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease)}
.plan:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.25)}
.plan-name{font-size:19px;font-weight:800;color:var(--ink)}
.plan-for{font-size:13.5px;color:var(--violet)}
.plan-price{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.plan-price b{font-size:42px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.plan-price span{font-size:13px;color:var(--violet)}
.plan ul{display:grid;gap:12px;margin:6px 0 10px}
.plan li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-soft)}
.plan li::before{content:"✓";flex:0 0 auto;color:var(--primary);font-weight:700}
.plan .btn{margin-top:auto}
.plan.featured{border-color:rgba(226,84,44,.38);box-shadow:var(--s3);transform:translateY(-16px)}
.plan.featured:hover{transform:translateY(-20px)}
.plan-badge{display:inline-block;font-size:11.5px;font-weight:700;color:#F7F5F0;background:var(--primary);border-radius:999px;padding:4px 12px;width:fit-content}

/* ---------- 最新信息 ---------- */
.post-card{height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--s1);padding:24px;transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.2)}
.post-link{display:flex;flex-direction:column;gap:12px;height:100%;color:inherit}
.post-link:hover{color:inherit}
.badge{display:inline-block;width:fit-content;font-size:11.5px;font-weight:700;color:var(--primary);border:1px solid rgba(226,84,44,.45);background:rgba(226,84,44,.06);border-radius:999px;padding:3px 10px}
.post-title{font-size:18px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
.post-link:hover .post-title{color:var(--primary)}
.post-excerpt{font-size:14.5px;line-height:1.75;color:var(--violet);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
.post-meta{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--violet)}
.post-meta .arw{color:var(--primary);font-weight:700}
.empty-card{border:1px dashed rgba(226,84,44,.4);border-radius:var(--r);min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--violet);font-size:14px;background:rgba(255,255,255,.5);padding:24px;text-align:center}

/* ---------- FAQ ---------- */
.faq-aside{position:sticky;top:104px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 2px;font-size:17px;font-weight:700;color:var(--ink);
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--primary);transition:transform 180ms var(--ease)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 2px 22px;font-size:15.5px;line-height:1.85;color:var(--violet);max-width:62em}

/* ---------- CTA 带 ---------- */
.cta-wrap{padding:0 0 96px}
.cta-band{
  background:var(--primary);border-radius:var(--r-lg);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 20px 44px -24px rgba(226,84,44,.6);
}
.cta-band h2{color:#F7F5F0;font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em}
.cta-band p{color:rgba(255,255,255,.85);font-size:14.5px;margin-top:10px;max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--night);color:rgba(247,245,240,.62);padding:72px 0 32px;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);background-size:22px 22px}
.site-footer .container{position:relative}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{font-size:14px;font-weight:700;color:#F7F5F0;margin-bottom:18px;letter-spacing:.02em}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#F7F5F0;font-size:18px;font-weight:800;margin-bottom:16px}
.footer-brand .logo-mark{color:var(--primary)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(247,245,240,.62);max-width:34em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);border-bottom:1px solid transparent;padding-bottom:2px;transition:all 180ms var(--ease)}
.footer-col a:hover{color:#F7F5F0;border-bottom-color:var(--primary)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.48)}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#F7F5F0}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity 420ms var(--ease),transform 420ms var(--ease)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .nav-chips{margin-left:12px}
}
@media screen and (max-width:1023px){
  .nav-chips,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .mobile-nav{display:block}
  .nav-bar{height:60px}
  .section{padding:72px 0}
  .hero{padding:56px 0 72px}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan.featured{transform:none}
  .plan.featured:hover{transform:translateY(-4px)}
  .faq-aside{position:static;margin-bottom:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px 28px}
}
@media screen and (max-width:768px){
  body{font-size:16px}
  .section{padding:56px 0}
  .hero{padding:44px 0 64px}
  .hero h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:24px}
  .section-head{margin-bottom:32px}
  .band-night{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:32px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-wrap{padding-bottom:64px}
}
@media screen and (max-width:520px){
  .container{padding:0 16px}
  .mobile-nav{padding-left:16px;padding-right:16px}
  .hero-stats{gap:18px}
  .hero-stat b{font-size:22px}
  .card{padding:22px}
  .plan{padding:24px}
  .post-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#0E1116;
  --ink-soft:#2C3138;
  --violet:#4A4664;
  --primary:#E2542C;
  --primary-deep:#B93C1C;
  --accent:#F2B441;
  --night:#12151C;
  --line:rgba(14,17,22,.12);
  --line-soft:rgba(14,17,22,.08);
  --r-card:14px;
  --r-lg:20px;
  --r-img:12px;
  --s1:0 1px 2px rgba(14,17,22,.06);
  --s2:0 8px 24px -12px rgba(14,17,22,.18);
  --s3:0 18px 40px -18px rgba(14,17,22,.26);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(226,84,44,.18)}

.container{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1360px}
}

.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
@media (max-width:639px){
  .container{padding:0 16px}
  .grid-margin-x{margin-left:-8px;margin-right:-8px}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px}
}

/* ============ 阅读进度条 ============ */
.read-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:var(--primary);z-index:80;
  opacity:0;transition:opacity var(--t);
}
.read-progress.is-ready{opacity:1}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--s1);background:#FBF9F5}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:68px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  flex:0 0 auto;min-height:44px;
}
.logo-mark{width:28px;height:28px;color:var(--primary);flex:0 0 auto}
.brand-name{
  font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.02em;
  white-space:nowrap;
}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;
  height:34px;padding:0 16px;
  border-radius:999px;
  font-size:14px;font-weight:600;color:var(--violet);
  white-space:nowrap;scroll-snap-align:center;
  transition:background var(--t),color var(--t),transform var(--t);
}
.chip:hover{background:rgba(14,17,22,.06);color:var(--ink)}
.chip:active{transform:scale(.97)}
.chip.is-active{background:var(--ink);color:var(--paper)}
.chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.header-actions{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
}
.header-actions .btn{height:40px;padding:0 18px;font-size:14px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--primary);color:#FFF9F5;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-deep);border-color:var(--primary-deep);transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(226,84,44,.45)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);border-radius:10px}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost:focus-visible,.btn-primary:focus-visible{outline:3px solid rgba(226,84,44,.18);outline-offset:2px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  transition:color var(--t);
}
.link-arrow i{font-size:13px;color:var(--primary);transition:transform var(--t)}
.link-arrow:hover{color:var(--primary);box-shadow:inset 0 -1px 0 0 var(--primary)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:18px 0;border-bottom:1px solid var(--line-soft)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--violet);
  flex-wrap:nowrap;overflow:hidden;
}
.breadcrumb a{color:var(--violet);transition:color var(--t)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(14,17,22,.4)}
.breadcrumb .cur{
  color:var(--ink);font-weight:600;
  max-width:52ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ============ 文章头 ============ */
.article-hero{
  padding:48px 0 40px;
  border-bottom:1px solid var(--line-soft);
  position:relative;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(14,17,22,.05) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(180deg,transparent 0,#000 40%,transparent 100%);
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 40%,transparent 100%);
}
.article-head{position:relative;z-index:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:11.5px;font-weight:700;letter-spacing:.02em;
  color:var(--primary);border:1px solid rgba(226,84,44,.45);
  background:rgba(226,84,44,.06);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-head h1{
  margin:20px 0 0;
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.28;letter-spacing:-.02em;
  overflow-wrap:break-word;word-break:break-word;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:20px;font-size:12.5px;color:var(--violet);
}
.meta-row .m{display:inline-flex;align-items:center;gap:6px}
.meta-row i{font-size:13px;color:var(--violet)}
.meta-row .divider{width:1px;height:12px;background:var(--line)}
.share-group{display:flex;align-items:center;gap:10px;margin-top:24px}
.share-group .label{font-size:12.5px;color:var(--violet);margin-right:2px}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:transparent;color:var(--violet);
  cursor:pointer;transition:all var(--t);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ============ 正文区 ============ */
.article-main{padding:56px 0 72px}
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.95;color:var(--ink-soft);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.35em}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:26px;line-height:1.35;font-weight:800;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;
  width:3px;height:18px;border-radius:2px;background:var(--primary);
}
.article-body h3{margin:32px 0 12px;font-size:20px;line-height:1.4}
.article-body h4{margin:24px 0 10px;font-size:17.5px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--primary-deep)}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;line-height:1.9}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body img{border-radius:var(--r-img);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--violet);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:var(--paper-2);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:18px;line-height:1.8;color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;
  font-size:15px;display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;
}
.article-body th{background:var(--paper-2);color:var(--ink);font-weight:700;white-space:nowrap}
.article-body pre{
  background:var(--night);color:#EFEBE3;padding:18px 20px;border-radius:var(--r-img);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:"SFMono-Regular",Consolas,Menlo,monospace}

.article-note{
  max-width:760px;
  margin:40px 0 0;padding:18px 20px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  font-size:13.5px;line-height:1.8;color:var(--violet);
}
.article-note strong{color:var(--ink);font-weight:700}

.empty-state{
  max-width:760px;
  padding:56px 32px;text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  background:#FFFDFA;
}
.empty-state i{font-size:26px;color:var(--violet)}
.empty-state h2{margin:16px 0 8px;font-size:20px}
.empty-state p{font-size:14.5px;color:var(--violet);margin-bottom:22px}

.tag-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin:40px 0 0;padding-top:28px;border-top:1px solid var(--line-soft);
}
.tag-row .tag-label{font-size:13px;font-weight:700;color:var(--ink);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);
  font-size:13px;color:var(--violet);background:#FFFDFA;
  transition:all var(--t);
}
.tag:hover{border-color:var(--primary);color:var(--primary)}

.post-nav{margin-top:36px}
.post-nav .cell{margin-bottom:16px}
.nav-card{
  display:flex;align-items:center;gap:16px;
  padding:20px 22px;min-height:96px;
  background:#FFFDFA;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--s1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.nav-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.4)}
.nav-card .nc-icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(226,84,44,.08);color:var(--primary);font-size:16px;
}
.nav-card .nc-text{min-width:0}
.nav-card .nc-label{font-size:12.5px;color:var(--violet);letter-spacing:.02em}
.nav-card .nc-title{
  margin-top:4px;font-size:16px;font-weight:700;color:var(--ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ============ 侧栏 ============ */
.side-sticky{position:sticky;top:92px}
.side-card{
  background:#FFFDFA;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 20px;box-shadow:var(--s1);margin-bottom:20px;
}
.side-card h3{
  font-size:14px;font-weight:800;letter-spacing:.04em;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);
}
.toc-list{margin-top:16px;border-top:1px solid var(--line-soft)}
.toc-list a{
  display:block;padding:10px 0 10px 12px;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;color:var(--violet);line-height:1.6;
  transition:color var(--t),padding-left var(--t);
}
.toc-list a:hover{color:var(--primary);padding-left:16px}
.side-list{margin-top:14px}
.side-list li{border-bottom:1px solid var(--line-soft)}
.side-list li:last-child{border-bottom:0}
.side-list a{
  display:block;padding:12px 0;
  font-size:14.5px;line-height:1.65;color:var(--ink-soft);
  transition:color var(--t);
  overflow-wrap:break-word;
}
.side-list a:hover{color:var(--primary)}
.side-list .side-meta{display:block;margin-top:4px;font-size:12.5px;color:var(--violet)}

.side-cta{
  background:var(--night);color:rgba(255,255,255,.72);
  border-radius:var(--r-lg);padding:26px 24px;
  position:relative;overflow:hidden;
}
.side-cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
}
.side-cta h3{color:#FFF9F5;font-size:18px;line-height:1.5;position:relative}
.side-cta p{font-size:13.5px;margin:10px 0 18px;line-height:1.8;position:relative}
.side-cta .btn{width:100%;position:relative}

/* ============ 相关推荐 ============ */
.related-section{
  border-top:1px solid var(--line-soft);
  padding:72px 0;
  background:var(--paper-2);
}
.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,32px);line-height:1.25}
.section-head p{margin-top:8px;font-size:14.5px;color:var(--violet)}
.card{
  display:flex;flex-direction:column;height:100%;
  background:#FFFDFA;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.4)}
.card-media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .card-badge{
  position:absolute;left:12px;top:12px;
  height:24px;padding:0 10px;border-radius:999px;
  display:inline-flex;align-items:center;
  font-size:11.5px;font-weight:700;
  background:rgba(255,253,250,.92);color:var(--primary);
  border:1px solid rgba(226,84,44,.35);
}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.card-body h3{
  font-size:18px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--t);
}
.card:hover .card-body h3{color:var(--primary)}
.card-body p{
  margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--violet);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--violet);border-top:1px solid var(--line-soft);
}
.card-meta i{color:var(--primary);font-size:12px}

/* ============ CTA 带 ============ */
.cta-wrap{padding:72px 0}
.cta-band{
  background:var(--primary);
  border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  border-radius:50%;background:rgba(255,255,255,.08);
}
.cta-band h2{color:#FFF9F5;font-size:clamp(22px,2.6vw,30px);line-height:1.3;position:relative}
.cta-band p{color:rgba(255,249,245,.86);font-size:14.5px;margin-top:10px;max-width:56ch;position:relative}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.cta-band .btn-primary{background:var(--ink);border-color:var(--ink);color:#FFF9F5}
.cta-band .btn-primary:hover{background:#000;border-color:#000;box-shadow:none}
.cta-band .btn-ghost{border-color:rgba(255,249,245,.55);color:#FFF9F5}
.cta-band .btn-ghost:hover{border-color:#FFF9F5;color:#FFF9F5;background:rgba(255,255,255,.08)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--night);color:rgba(255,255,255,.62);
  position:relative;overflow:hidden;padding-top:64px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#FFF9F5;font-size:17px;font-weight:800;margin-bottom:16px;
}
.footer-brand .logo-mark{width:24px;height:24px;color:var(--primary)}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:36ch}
.footer-col h4{
  color:#FFF9F5;font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{
  font-size:13.5px;color:rgba(255,255,255,.62);
  transition:color var(--t),box-shadow var(--t);
}
.footer-col ul a:hover{color:#FFF9F5;box-shadow:inset 0 -1px 0 0 var(--primary)}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:8px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .header-inner{height:64px;gap:14px}
  .header-actions .btn-ghost{display:none}
  .article-hero{padding:36px 0 32px}
  .article-main{padding:44px 0 56px}
  .side-sticky{position:static;margin-top:36px}
  .related-section{padding:56px 0}
  .cta-wrap{padding:56px 0}
  .cta-band{padding:32px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  body{font-size:16px}
  .header-inner{height:56px}
  .brand-name{font-size:16px}
  .chip{height:32px;padding:0 14px;font-size:13.5px}
  .header-actions .btn{height:36px;padding:0 14px;font-size:13.5px}
  .article-head h1{font-size:26px;line-height:1.32}
  .share-group{margin-top:20px}
  .article-body{font-size:16.5px;line-height:1.9}
  .article-body h2{font-size:22px;margin:34px 0 14px}
  .article-body h3{font-size:18.5px}
  .article-body blockquote{font-size:16.5px;padding:16px 18px}
  .article-main{padding:36px 0 48px}
  .cta-band{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .card:hover{transform:none}
  .nav-card:hover{transform:none}
  .btn-primary:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#0E1116;
  --ink-soft:#2C3138;
  --violet:#4A4664;
  --primary:#E2542C;
  --primary-deep:#B93C1C;
  --accent:#F2B441;
  --night:#12151C;
  --line:rgba(14,17,22,.12);
  --line-dark:rgba(255,255,255,.12);
  --r-sm:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-img:12px;
  --s1:0 1px 2px rgba(14,17,22,.06);
  --s2:0 8px 24px -12px rgba(14,17,22,.18);
  --s3:0 18px 40px -18px rgba(14,17,22,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color 180ms var(--ease),border-color 180ms var(--ease),background-color 180ms var(--ease);}
a:hover{color:var(--primary-deep);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--ink);margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.grid-x{display:flex;flex-wrap:wrap;}
.cell{min-width:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.95);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms var(--ease),background-color 180ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--s1);}
.header-inner{
  display:flex;align-items:center;gap:22px;
  height:68px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink);font-size:18px;font-weight:800;letter-spacing:-.02em;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink);}
.logo-mark{width:28px;height:28px;color:var(--primary);flex:0 0 auto;}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  scroll-snap-type:x mandatory;
  padding:2px 0;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;padding:8px 16px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--violet);
  background:transparent;white-space:nowrap;
  scroll-snap-align:center;
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.chip:hover{background:var(--paper-2);color:var(--ink);}
.chip.is-active{background:var(--ink);color:var(--paper);}
.chip.is-active:hover{background:var(--ink);color:var(--paper);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(226,84,44,.45);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-light{background:transparent;border-color:rgba(255,255,255,.3);color:#fff;}
.btn-light:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff;}
.btn-sm{min-height:38px;padding:8px 18px;font-size:14px;}
.btn-block{width:100%;}

.nav-toggle{
  display:none;
  align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;color:var(--ink);
  font-size:14.5px;font-weight:600;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.nav-toggle .bars{display:inline-block;width:16px;height:2px;background:currentColor;position:relative;}
.nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;}
.nav-toggle .bars::before{top:-5px;}
.nav-toggle .bars::after{top:5px;}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper);
  padding:14px 24px 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{display:flex;flex-direction:column;gap:4px;}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;
  padding:10px 14px;border-radius:var(--r-sm);
  color:var(--ink);font-size:15.5px;font-weight:600;
}
.mobile-drawer a:hover{background:var(--paper-2);}
.mobile-drawer a.is-active{background:var(--primary);color:#fff;}

/* ---------- crumbs ---------- */
.crumbs{padding:22px 0 0;font-size:12.5px;color:var(--violet);}
.crumbs a{color:var(--violet);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(14,17,22,.4);margin:0 8px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:44px 0 72px;
}
.hero::after{
  content:"";position:absolute;top:-60px;right:-40px;width:460px;height:340px;
  background-image:radial-gradient(rgba(226,84,44,.22) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
  -webkit-mask-image:radial-gradient(ellipse at top right,#000 10%,transparent 72%);
  mask-image:radial-gradient(ellipse at top right,#000 10%,transparent 72%);
}
.hero-inner{row-gap:36px;}
.hero-copy .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  background:rgba(226,84,44,.06);border:1px solid rgba(226,84,44,.28);
}
.hero-copy h1{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.14;letter-spacing:-.02em;
}
.hero-rule{width:48px;height:3px;border-radius:2px;background:var(--primary);margin:20px 0 18px;}
.hero-sub{font-size:17px;color:var(--violet);max-width:56ch;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.point{
  display:inline-flex;align-items:center;gap:8px;
  min-height:36px;padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink-soft);
}
.point .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:34px;margin-top:36px;
  padding-top:24px;border-top:1px solid var(--line);
}
.stat b{
  display:block;font-size:30px;font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.15;
}
.stat span{display:block;font-size:12.5px;color:var(--violet);margin-top:4px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--s2);
}
.hero-badge{
  position:absolute;left:-14px;bottom:-14px;
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 18px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);box-shadow:var(--s1);
  font-size:13px;font-weight:700;color:var(--ink);
}
.hero-badge .pulse{
  width:8px;height:8px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 4px rgba(226,84,44,.16);
}
.status-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;
  margin-top:26px;padding:14px 20px;
  background:var(--paper-2);border-radius:var(--r-card);
  font-size:13.5px;color:var(--violet);
}
.status-bar b{color:var(--ink);font-weight:700;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .kicker{
  display:block;font-size:12.5px;font-weight:700;letter-spacing:.1em;
  color:var(--primary);margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.2;}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--violet);}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}

/* ---------- alt rows ---------- */
.alt-list{border-top:1px solid var(--line);}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;border-bottom:1px solid var(--line);
}
.alt-row.is-reverse .alt-text{order:2;}
.alt-row.is-reverse .alt-media{order:1;}
.alt-tag{
  display:inline-flex;align-items:center;gap:7px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:var(--primary);
  background:rgba(226,84,44,.06);border:1px solid rgba(226,84,44,.3);
}
.alt-text h3{font-size:22px;margin-top:16px;line-height:1.35;}
.alt-text p{margin-top:12px;font-size:15.5px;color:var(--violet);max-width:52ch;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14.5px;font-weight:700;color:var(--primary);
}
.link-arrow svg{width:16px;height:16px;transition:transform 180ms var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}
.alt-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--s1);transition:transform 180ms var(--ease);
}
.alt-media{overflow:hidden;border-radius:var(--r-lg);}
.alt-media:hover img{transform:scale(1.03);}

/* ---------- scene cards ---------- */
.scene-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--s1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.2);}
.scene-card .num{
  font-size:13px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.scene-card h3{font-size:19px;margin-top:10px;}
.scene-card p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--violet);}

/* ---------- readiness ---------- */
.ready-panel{
  display:grid;grid-template-columns:minmax(240px,360px) 1fr;gap:56px;
  background:var(--paper-2);border-radius:var(--r-lg);padding:48px;
}
.ready-panel h2{font-size:clamp(22px,2.6vw,30px);}
.ready-panel .lead{margin-top:14px;font-size:15px;color:var(--violet);}
.ready-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-soft);
}
.ready-list li:first-child{padding-top:0;}
.ready-list li:last-child{border-bottom:0;padding-bottom:0;}
.ready-list .tick{
  flex:0 0 auto;width:20px;height:20px;margin-top:4px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(226,84,44,.1);color:var(--primary);
}
.ready-list .tick svg{width:11px;height:11px;}

/* ---------- entry cards ---------- */
.entry-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s1);color:inherit;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--s3);border-color:rgba(226,84,44,.2);color:inherit;}
.entry-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 180ms var(--ease);}
.entry-card:hover .entry-thumb img{transform:scale(1.03);}
.entry-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.entry-body h3{font-size:19px;line-height:1.35;}
.entry-card:hover .entry-body h3{color:var(--primary);}
.entry-body p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--violet);flex:1 1 auto;}
.entry-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--violet);
}
.entry-meta svg{width:15px;height:15px;color:var(--primary);transition:transform 180ms var(--ease);}
.entry-card:hover .entry-meta svg{transform:translateX(3px);}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(240px,340px) 1fr;gap:56px;}
.faq-aside{position:sticky;top:100px;align-self:start;}
.faq-aside h2{font-size:clamp(24px,3vw,34px);}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--violet);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:17px;font-weight:700;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--primary);
  transition:transform 180ms var(--ease);flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--violet);max-width:72ch;}
.faq-item summary:hover{color:var(--primary);}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--night);border-radius:var(--r-lg);
  padding:48px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.9;pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.66);max-width:52ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--night);
  color:rgba(255,255,255,.62);
  padding:76px 0 26px;margin-top:96px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;font-size:18px;font-weight:800;
}
.footer-brand:hover{color:#fff;}
.footer-brand .logo-mark{color:var(--primary);}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:38ch;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:rgba(255,255,255,.62);font-size:14.5px;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--primary);text-underline-offset:3px;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:8px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:rgba(255,255,255,.48);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1200px;}
}
@media (max-width:1023px){
  .nav-chips,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .alt-row{gap:36px;padding:40px 0;}
  .ready-panel{grid-template-columns:1fr;gap:32px;padding:36px 28px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{width:100%;}
  .hero{padding-top:34px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .alt-row{grid-template-columns:1fr;gap:24px;}
  .alt-row.is-reverse .alt-text{order:1;}
  .alt-row.is-reverse .alt-media{order:2;}
  .hero-stats{gap:24px;}
  .stat b{font-size:26px;}
  .hero-badge{left:12px;bottom:12px;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .header-inner{height:60px;gap:12px;}
  .brand{font-size:16.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero{padding:26px 0 52px;}
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .btn-sm{min-height:44px;}
  .cta-band{padding:32px 22px;border-radius:var(--r-card);}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:56px 0 22px;margin-top:64px;}
  .footer-bottom{flex-direction:column;}
  .status-bar{gap:10px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#0E1116;
  --ink-soft:#2C3138;
  --violet:#4A4664;
  --primary:#E2542C;
  --primary-deep:#B93C1C;
  --accent:#F2B441;
  --night:#12151C;
  --line:rgba(14,17,22,.12);
  --line-2:rgba(14,17,22,.2);
  --line-light:rgba(255,255,255,.12);
  --r-card:14px;
  --r-lg:20px;
  --r-img:12px;
  --r-chip:999px;
  --s1:0 1px 2px rgba(14,17,22,.06);
  --s2:0 8px 24px -12px rgba(14,17,22,.18);
  --s3:0 18px 40px -18px rgba(14,17,22,.26);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
::selection{background:rgba(226,84,44,.18);}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1360px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-chip);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--paper);}
.btn-primary:hover{background:var(--primary-deep);color:var(--paper);transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(226,84,44,.45);}
.btn-primary:active{background:var(--primary-deep);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:rgba(255,255,255,.86);border-color:var(--line-light);}
.btn-outline-light:hover{color:#fff;border-color:rgba(255,255,255,.42);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
}
.link-arrow svg{width:16px;height:16px;transition:transform var(--t);}
.link-arrow:hover{color:var(--primary-deep);border-bottom:1px solid var(--primary);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-chip);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--primary);
  border:1px solid rgba(226,84,44,.4);
  background:rgba(226,84,44,.06);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--s1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink);}
.logo-mark{width:28px;height:28px;flex:0 0 28px;color:var(--primary);}
.nav-chips{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  -ms-overflow-style:none;
  scrollbar-width:none;
  padding:4px 0;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  scroll-snap-align:center;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:var(--r-chip);
  font-size:14.5px;
  font-weight:500;
  color:var(--violet);
  background:transparent;
  border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t);
}
.chip:hover{background:var(--paper-2);color:var(--ink);}
.chip.is-active{background:var(--ink);color:var(--paper);}
.chip.is-active:hover{background:var(--ink);color:var(--paper);}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.header-cta .btn{min-height:38px;padding:0 18px;font-size:14.5px;}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;
  padding:64px 0 72px;
  background:var(--paper);
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";
  position:absolute;
  top:-40px;
  right:-40px;
  width:340px;
  height:340px;
  background-image:radial-gradient(rgba(14,17,22,.10) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.55;
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--violet);
  margin-bottom:24px;
}
.breadcrumb a{color:var(--violet);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(14,17,22,.4);}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.16;
  letter-spacing:-.02em;
  margin:16px 0 0;
}
.cat-hero__lead{
  margin-top:18px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-soft);
  max-width:560px;
}
.chip-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:24px;
}
.chip-static{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-chip);
  background:var(--paper-2);
  border:1px solid var(--line);
  font-size:13px;
  color:var(--violet);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.cat-hero__media{
  margin:32px 0 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--s2);
  background:var(--paper-2);
  aspect-ratio:16/10;
}
.cat-hero__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1);}
.cat-hero__media:hover img{transform:scale(1.03);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:64px 0 72px;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.2;
  margin-bottom:12px;
}
.section-head p{
  font-size:14.5px;
  line-height:1.75;
  color:var(--violet);
}
.section-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}

/* ---------- 数据指标带 ---------- */
.stats-band{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.stats-grid{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);}
.stat{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--s1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.stat:hover{box-shadow:var(--s2);transform:translateY(-4px);border-color:rgba(226,84,44,.2);}
.stat__num{
  font-size:clamp(30px,3.4vw,44px);
  font-weight:800;
  line-height:1.1;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat__num em{font-style:normal;font-size:16px;font-weight:700;color:var(--primary);margin-left:4px;}
.stat__label{margin-top:8px;font-size:14.5px;color:var(--violet);line-height:1.7;}
.stats-note{margin-top:20px;font-size:12.5px;color:var(--violet);}

/* ---------- 时间线（编号步骤） ---------- */
.timeline{display:grid;gap:8px;margin-top:8px;}
.step{position:relative;padding:0 0 34px 46px;}
.step::before{
  content:"";
  position:absolute;
  left:11px;
  top:28px;
  bottom:0;
  width:2px;
  background:var(--line);
}
.step:last-child::before{display:none;}
.step__num{
  position:absolute;
  left:0;
  top:0;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--paper);
  border:2px solid var(--primary);
  color:var(--primary);
  font-size:12px;
  font-weight:800;
  line-height:1;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step__tag{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.04em;
  margin-bottom:4px;
}
.step__title{font-size:20px;line-height:1.4;margin-bottom:8px;}
.step__text{font-size:15px;line-height:1.8;color:var(--ink-soft);max-width:520px;}

/* ---------- 数据范围 ---------- */
.data-panel{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:8px 28px;
}
.data-list li{
  display:flex;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.data-list li:last-child{border-bottom:0;}
.data-list .num{
  flex:0 0 auto;
  font-size:13px;
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  padding-top:2px;
  letter-spacing:.02em;
}
.data-list h3{font-size:17px;line-height:1.5;margin-bottom:6px;}
.data-list p{font-size:14.5px;line-height:1.8;color:var(--violet);}
.data-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--s2);
  background:var(--paper-2);
  aspect-ratio:16/11;
  margin-bottom:24px;
}
.data-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1);}
.data-media:hover img{transform:scale(1.03);}
.data-side{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  border-radius:var(--r-card);
  padding:28px;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;
}
.data-side h3{color:#fff;font-size:19px;margin-bottom:12px;}
.data-side p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.68);}
.data-side ul{margin-top:16px;}
.data-side li{
  display:flex;
  gap:10px;
  padding:10px 0;
  border-top:1px solid var(--line-light);
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.data-side li:first-child{border-top:0;}
.data-side li span{color:var(--primary);font-weight:800;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:32px;}
.faq-intro h2{font-size:clamp(24px,3vw,36px);line-height:1.2;margin-bottom:12px;}
.faq-intro p{font-size:14.5px;line-height:1.75;color:var(--violet);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  line-height:1.6;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:20px;
  font-weight:600;
  line-height:1;
  color:var(--primary);
  margin-top:4px;
  transition:transform var(--t);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{color:var(--primary);}
.faq-item__body{
  padding:0 40px 22px 0;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-soft);
}

/* ---------- 其他分类入口 ---------- */
.cross-grid{display:grid;gap:24px;margin-top:8px;}
.link-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
  height:100%;
}
.link-card:hover{box-shadow:var(--s3);transform:translateY(-4px);border-color:rgba(226,84,44,.2);}
.link-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.link-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1);}
.link-card:hover .link-card__media img{transform:scale(1.03);}
.link-card__body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.link-card__body h3{font-size:19px;line-height:1.4;}
.link-card__body p{font-size:14.5px;line-height:1.75;color:var(--violet);}
.link-card__body .link-arrow{margin-top:auto;padding-top:8px;}

/* ---------- CTA 带 ---------- */
.cta-wrap{padding:0 0 96px;}
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  padding:52px 44px;
  background-color:var(--night);
  background-image:linear-gradient(rgba(18,21,28,.9),rgba(18,21,28,.92)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px;line-height:1.8;max-width:520px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background-color:var(--night);
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:22px 22px;
  color:rgba(255,255,255,.62);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  gap:40px;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:18px;
  font-weight:800;
  margin-bottom:16px;
}
.footer-brand:hover{color:#fff;}
.footer-brand .logo-mark{color:var(--primary);}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:14px;
  color:rgba(255,255,255,.62);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.footer-col ul a:hover{color:#fff;border-bottom-color:var(--primary);}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:8px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  padding-top:24px;
  font-size:12.5px;
  color:rgba(255,255,255,.5);
}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms cubic-bezier(.2,.7,.3,1),transform 420ms cubic-bezier(.2,.7,.3,1);}
.js .reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .stats-grid{grid-template-columns:repeat(4,1fr);}
  .cross-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .grid-2col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
  .timeline{grid-template-columns:1fr 1fr;column-gap:64px;}
  .timeline .step:nth-child(even){margin-top:64px;}
  .faq-layout{grid-template-columns:360px 1fr;gap:64px;}
  .faq-intro{position:sticky;top:108px;}
  .cross-grid{grid-template-columns:repeat(3,1fr);}
  .cat-hero__media{margin-top:0;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .cat-hero{padding:48px 0 56px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .cta-wrap{padding-bottom:72px;}
}
@media (max-width:640px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .header-inner{height:auto;flex-wrap:wrap;gap:10px;padding:10px 0;}
  .brand{font-size:16px;}
  .nav-chips{order:3;width:100%;flex:1 1 100%;padding:2px 0 4px;}
  .header-cta{margin-left:auto;}
  .header-cta .btn-ghost{display:none;}
  .cat-hero{padding:40px 0 48px;}
  .cat-hero::after{display:none;}
  .hero-actions .btn{width:100%;}
  .stats-band{padding:44px 0;}
  .data-panel{padding:4px 20px;}
  .cta-band{padding:36px 24px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding:56px 0 24px;}
  .container{padding:0 18px;}
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .js .reveal{opacity:1 !important;transform:none !important;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#0E1116;
  --ink-soft:#2C3138;
  --violet:#4A4664;
  --primary:#E2542C;
  --primary-deep:#B93C1C;
  --accent:#F2B441;
  --night:#12151C;
  --line:rgba(14,17,22,.12);
  --line-dark:rgba(255,255,255,.12);
  --r-card:14px;
  --r-lg:20px;
  --r-img:12px;
  --s1:0 1px 2px rgba(14,17,22,.06);
  --s2:0 8px 24px -12px rgba(14,17,22,.18);
  --s3:0 18px 40px -18px rgba(14,17,22,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,.chip:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

/* Foundation 默认外观覆盖 */
.button{background:var(--primary);border-radius:999px;font-family:inherit}
.button:hover,.button:focus{background:var(--primary-deep)}
.callout{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card)}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.2;
  margin-bottom:14px;
}
.section-head p{
  font-size:15.5px;
  line-height:1.8;
  color:var(--violet);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--violet);
  margin-bottom:16px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--s1);background:var(--paper)}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-size:18px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
}
.logo-mark{
  width:28px;height:28px;
  color:var(--primary);
  flex:0 0 auto;
}
.nav-chips{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:500;
  color:var(--violet);
  white-space:nowrap;
  scroll-snap-align:center;
  transition:background var(--t),color var(--t);
}
.chip:hover{background:rgba(14,17,22,.06);color:var(--ink)}
.chip.is-active{background:var(--ink);color:var(--paper)}
.chip.is-active:hover{background:var(--ink);color:var(--paper)}
.header-actions{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:10px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px}
.btn-primary{background:var(--primary);color:#FBF9F5}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(226,84,44,.45)}
.btn-primary:active{background:var(--primary-deep);transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-light{background:#FBF9F5;color:var(--ink)}
.btn-light:hover{background:#FFFFFF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.38);color:#FBF9F5}
.btn-outline-light:hover{border-color:#FBF9F5;color:#FFFFFF;transform:translateY(-1px)}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--primary);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color var(--t),border-color var(--t);
}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover{border-bottom-color:var(--primary)}
.link-arrow:hover span{transform:translateX(3px)}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--violet);
  padding:20px 0 8px;
}
.breadcrumb a{color:var(--violet);transition:color var(--t)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(14,17,22,.4)}
.breadcrumb .current{color:var(--ink);font-weight:500}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding-bottom:64px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  top:-40px;right:-60px;
  width:320px;height:320px;
  background-image:radial-gradient(rgba(14,17,22,.35) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.05;
  pointer-events:none;
}
.cat-hero h1{
  font-size:clamp(28px,3.8vw,48px);
  line-height:1.14;
  margin-bottom:18px;
}
.hero-rule{
  width:48px;height:3px;
  background:var(--primary);
  border-radius:2px;
  margin-bottom:22px;
}
.hero-sub{
  font-size:16.5px;
  line-height:1.9;
  color:var(--violet);
  max-width:560px;
  margin-bottom:24px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(226,84,44,.28);
  background:rgba(226,84,44,.06);
  color:var(--primary);
  font-size:13px;
  font-weight:700;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--s2);
  border:1px solid var(--line);
  background:var(--paper-2);
  aspect-ratio:16/10;
}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.hero-media:hover img{transform:scale(1.03)}

/* ============ 数据带 ============ */
.stats-band{
  background:var(--night);
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:22px 22px;
  background-repeat:repeat;
  padding:64px 0;
  position:relative;
}
.stats-band::before{
  content:"";
  position:absolute;inset:0;
  background:rgba(18,21,28,.94);
  pointer-events:none;
}
.stats-band .container{position:relative;z-index:1}
.stats-lead{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:rgba(247,245,240,.62);
  margin-bottom:28px;
}
.live-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(242,180,65,.16);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.55;transform:scale(.86)}
}
.stats-grid{gap:0}
.stat{
  border-left:1px solid var(--line-dark);
  padding:6px 24px 6px 24px;
}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{
  font-size:clamp(32px,4vw,48px);
  font-weight:800;
  color:#FBF9F5;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num .unit{font-size:15px;font-weight:600;color:rgba(247,245,240,.6);margin-left:6px}
.stat-label{
  font-size:13px;
  color:rgba(247,245,240,.6);
  margin-top:6px;
}
.stats-note{
  margin-top:32px;
  font-size:12.5px;
  color:rgba(247,245,240,.48);
}

/* ============ 话题板块：左索引 + 右条目 ============ */
.topics-section{background:var(--paper)}
.topics-grid{align-items:flex-start}
.topic-index{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  border-left:2px solid var(--line);
  padding-left:20px;
}
.topic-index a{
  display:block;
  padding:12px 0;
  font-size:15px;
  font-weight:600;
  color:var(--violet);
  border-bottom:1px solid transparent;
  transition:color var(--t),padding-left var(--t);
}
.topic-index a:hover{color:var(--primary);padding-left:4px}
.topic-index a.is-active{color:var(--ink)}
.topic-index a.is-active::before{
  content:"";
  display:inline-block;
  width:14px;height:2px;
  background:var(--primary);
  vertical-align:middle;
  margin-right:8px;
}
.topic-card{
  background:#FDFCF9;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:28px;
  margin-bottom:20px;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
  scroll-margin-top:96px;
}
.topic-card:hover{
  box-shadow:var(--s3);
  transform:translateY(-4px);
  border-color:rgba(226,84,44,.28);
}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:999px;
  border:1px solid rgba(226,84,44,.3);
  background:rgba(226,84,44,.06);
  color:var(--primary);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:14px;
}
.topic-card h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:10px;
}
.topic-card > p{
  font-size:15.5px;
  line-height:1.85;
  color:var(--violet);
  margin-bottom:16px;
}
.topic-points{
  border-top:1px solid var(--line);
  padding-top:14px;
  margin-bottom:16px;
}
.topic-points li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--ink-soft);
  margin-bottom:8px;
}
.topic-points li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}
.topic-meta{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  font-size:12.5px;
  color:var(--violet);
  padding-bottom:14px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
}

/* ============ 参与流程 ============ */
.flow-section{background:var(--paper-2)}
.flow-list{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:flow;
}
.flow-item{
  position:relative;
  background:#FDFCF9;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--s1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.flow-item:hover{
  box-shadow:var(--s3);
  transform:translateY(-4px);
  border-color:rgba(226,84,44,.28);
}
.flow-no{
  display:inline-block;
  font-size:13px;
  font-weight:800;
  color:var(--primary);
  letter-spacing:.06em;
  margin-bottom:12px;
  font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:19px;font-weight:700;margin-bottom:10px}
.flow-item p{font-size:14.5px;line-height:1.8;color:var(--violet)}

/* ============ 热议排行 ============ */
.ranking-section{background:var(--paper)}
.rank-list{border-top:1px solid var(--line)}
.rank-item{
  display:grid;
  grid-template-columns:56px 1fr 200px 130px;
  align-items:center;
  gap:20px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.rank-item:hover{background:rgba(226,84,44,.035)}
.rank-no{
  font-size:20px;
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.rank-body h3{font-size:18px;font-weight:700;margin-bottom:4px}
.rank-body p{font-size:14px;color:var(--violet);line-height:1.7}
.rank-bar{
  height:6px;
  border-radius:999px;
  background:rgba(14,17,22,.08);
  overflow:hidden;
}
.rank-bar span{
  display:block;
  height:100%;
  width:var(--w,60%);
  border-radius:999px;
  background:var(--primary);
}
.rank-value{
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  text-align:right;
  font-variant-numeric:tabular-nums;
}
.rank-note{margin-top:20px;font-size:12.5px;color:var(--violet)}

/* ============ 分类交叉入口 ============ */
.cross-section{background:var(--paper-2)}
.cross-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#FDFCF9;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--s1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.cross-card:hover{
  box-shadow:var(--s3);
  transform:translateY(-4px);
  border-color:rgba(226,84,44,.28);
}
.cross-media{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--paper-2);
}
.cross-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.cross-card:hover .cross-media img{transform:scale(1.03)}
.cross-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.cross-body h3{font-size:19px;font-weight:700;margin-bottom:10px}
.cross-body p{font-size:14.5px;line-height:1.8;color:var(--violet);margin-bottom:18px;flex:1 1 auto}

/* ============ FAQ ============ */
.faq-section{background:var(--paper)}
.faq-left{position:sticky;top:96px}
.faq-left h2{font-size:clamp(24px,3vw,36px);margin-bottom:14px}
.faq-left p{font-size:15px;line-height:1.8;color:var(--violet);max-width:320px}
.faq-accordion.accordion{
  background:transparent;
  border:0;
  margin:0;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-accordion .accordion-title{
  background:transparent;
  border:0;
  padding:22px 48px 22px 0;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  line-height:1.5;
  transition:color var(--t);
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus{
  background:transparent;
  color:var(--primary);
}
.faq-accordion .accordion-title::before{
  content:"";
  position:absolute;
  right:12px;
  top:50%;
  width:12px;
  height:2px;
  margin-top:-1px;
  background:var(--primary);
  border-radius:2px;
  font-size:0;
  transition:transform var(--t);
}
.faq-accordion .accordion-title::after{
  content:"";
  position:absolute;
  right:17px;
  top:50%;
  width:2px;
  height:12px;
  margin-top:-6px;
  background:var(--primary);
  border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.faq-accordion .accordion-item.is-active .accordion-title::after{
  transform:rotate(90deg);
  opacity:0;
}
.faq-accordion .accordion-content{
  background:transparent;
  border:0;
  padding:0 48px 24px 0;
  color:var(--violet);
  font-size:15.5px;
  line-height:1.85;
}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--primary);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  border-radius:var(--r-lg);
}
.cta-inner h2{
  color:#FBF9F5;
  font-size:clamp(24px,3vw,34px);
  margin-bottom:12px;
}
.cta-inner p{
  color:rgba(251,249,245,.86);
  font-size:15.5px;
  line-height:1.8;
  max-width:620px;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--night);
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:22px 22px;
  color:rgba(255,255,255,.62);
  padding:72px 0 32px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;inset:0;
  background:rgba(18,21,28,.95);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#FBF9F5;
  font-size:18px;
  font-weight:800;
  margin-bottom:16px;
}
.footer-brand .logo-mark{width:26px;height:26px;color:var(--primary)}
.footer-about{
  font-size:14.5px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:340px;
}
.footer-col h4{
  color:#FBF9F5;
  font-size:14px;
  font-weight:700;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{
  font-size:14.5px;
  color:rgba(255,255,255,.62);
  border-bottom:1px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.footer-col a:hover{color:#FBF9F5;border-bottom-color:var(--primary)}
.footer-col p{
  font-size:14.5px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  margin-bottom:10px;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:12.5px;
  color:rgba(255,255,255,.48);
}

/* ============ 入场动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.is-visible{
  opacity:1;
  transform:none;
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1360px}
}

@media (max-width:1024px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .header-inner{height:auto;padding:12px 0;flex-wrap:wrap;gap:12px}
  .brand{order:1}
  .header-actions{order:2;margin-left:auto}
  .nav-chips{
    order:3;
    width:100%;
    justify-content:flex-start;
    padding-bottom:4px;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 40px,#000 calc(100% - 40px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 40px,#000 calc(100% - 40px),transparent 100%);
  }
  .chip{height:44px;padding:0 18px}
  .flow-list{grid-template-columns:repeat(2,1fr)}
  .rank-item{grid-template-columns:44px 1fr 120px;gap:16px}
  .rank-bar{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-left{position:static;margin-bottom:32px}
  .topic-index{position:static;flex-direction:row;flex-wrap:nowrap;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);padding:0 0 10px;margin-bottom:24px;gap:8px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .topic-index::-webkit-scrollbar{display:none}
  .topic-index a{
    padding:10px 16px;
    border:1px solid var(--line);
    border-radius:999px;
    white-space:nowrap;
    font-size:14px;
  }
  .topic-index a.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
  .topic-index a.is-active::before{display:none}
}

@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero-media{display:none}
  .cat-hero{padding-bottom:40px}
  .hero-sub{font-size:15.5px}
  .stats-band{padding:48px 0}
  .stat{border-left:0;padding:0 0 20px;border-bottom:1px solid var(--line-dark);margin-bottom:20px}
  .stat:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
  .flow-list{grid-template-columns:1fr}
  .rank-item{grid-template-columns:36px 1fr;gap:12px;padding:18px 0}
  .rank-value{grid-column:2;text-align:left}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (max-width:520px){
  .header-actions .btn-outline{display:none}
  .brand span{font-size:16.5px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .hero-actions .btn{width:100%}
  .topic-card{padding:22px}
  .faq-accordion .accordion-content{padding-right:24px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js .reveal{opacity:1;transform:none}
  .topic-card:hover,.flow-item:hover,.cross-card:hover{transform:none}
}