/* roulang page: index */
:root{
  --c-night-900:#12101F;
  --c-night-800:#1B1832;
  --c-night-700:#262246;
  --c-primary:#3B3486;
  --c-primary-600:#4A41A8;
  --c-accent:#E8A33D;
  --c-accent-700:#CE8A22;
  --c-teal:#4FB8AE;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E6E3DC;
  --c-text:#1E1B2E;
  --c-text-2:#5A5670;
  --c-text-3:#8C889B;
  --c-success:#4E9F6B;
  --c-warning:#D98A2B;
  --c-danger:#C4553F;
  --sh-1:0 1px 2px rgba(24,20,45,.06);
  --sh-2:0 6px 20px -8px rgba(24,20,45,.14);
  --sh-3:0 14px 34px -12px rgba(24,20,45,.22);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-badge:6px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 16px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#241A05;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-700);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:rgba(59,52,134,.06);box-shadow:var(--sh-2)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.link-underline{position:relative;color:var(--c-primary);font-weight:600}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--c-primary);
  transition:width .2s ease;
}
.link-underline:hover::after{width:100%}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-badge);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-teal{background:rgba(79,184,174,.12);color:#2C7B74}
.badge-accent{background:rgba(232,163,61,.16);color:#92630E}
.badge-primary{background:rgba(59,52,134,.08);color:var(--c-primary)}
.badge-line{background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text-2);font-weight:500}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.brand-row{display:flex;align-items:center;gap:20px;height:74px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-night-700) 100%);
  display:flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:20px;height:20px;fill:var(--c-accent)}
.logo-text{
  font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;
  color:var(--c-text);white-space:nowrap;
}
.site-search{position:relative;flex:1;max-width:300px}
.site-search input{
  width:100%;height:42px;padding:0 14px 0 38px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-bg);font-size:14px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.site-search input::placeholder{color:var(--c-text-3)}
.site-search input:focus{outline:none;background:var(--c-surface);border-color:var(--c-primary);box-shadow:0 0 0 1px rgba(59,52,134,.35)}
.site-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;fill:var(--c-text-3)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.channel-row{border-top:1px solid var(--c-line);background:var(--c-surface)}
.channel-nav{display:flex;align-items:center;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;padding:15px 2px;margin-right:28px;flex:none;
  font-size:15px;color:var(--c-text-2);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.channel-nav a:hover{color:var(--c-text)}
.channel-nav a.active{color:var(--c-text);font-weight:700;border-bottom-color:var(--c-primary)}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(18,16,31,.52);display:flex;justify-content:flex-end}
.drawer[hidden]{display:none}
.drawer-panel{
  width:min(340px,86vw);height:100%;background:var(--c-surface);
  padding:22px 20px 28px;display:flex;flex-direction:column;gap:18px;
  box-shadow:var(--sh-3);overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;font-family:var(--font-serif);font-size:17px;font-weight:700}
.drawer-close{
  width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);cursor:pointer;font-size:16px;color:var(--c-text-2);
}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.drawer-nav a{padding:15px 2px;border-bottom:1px solid var(--c-line);font-size:16px;color:var(--c-text-2)}
.drawer-nav a.active{color:var(--c-primary);font-weight:700}
.drawer-note{font-size:13px;color:var(--c-text-3);line-height:1.7}

/* ============ Hero ============ */
.hero{padding:72px 0 80px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(59,52,134,.10),rgba(59,52,134,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;position:relative}
.hero-copy{grid-column:span 6}
.hero-media{grid-column:span 6}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;background:rgba(79,184,174,.12);
  color:#2C7B74;font-size:13px;font-weight:600;letter-spacing:.04em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-teal)}
.hero h1{
  font-size:40px;line-height:1.25;margin:20px 0 0;letter-spacing:.01em;
}
.hero h1 em{font-style:normal;color:var(--c-primary);border-bottom:3px solid rgba(232,163,61,.55);padding-bottom:2px}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:34em}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;
  padding-top:20px;border-top:1px solid var(--c-line);
  font-size:14px;color:var(--c-text-2);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.kv-frame{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:var(--c-night-800)}
.kv-frame::before{
  content:"";position:absolute;left:0;top:0;width:64px;height:4px;background:var(--c-primary);z-index:2;
}
.kv-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}
.kv-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(18,16,31,.86);color:#fff;font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:var(--r-badge);
}

/* ============ 数据条 ============ */
.stats{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:var(--c-surface)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:30px 18px;text-align:center;border-left:1px solid var(--c-line)}
.stat:first-child{border-left:0}
.stat-num{
  display:block;font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-label{display:block;margin-top:6px;font-size:14px;color:var(--c-text-2)}

/* ============ 区块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-title{font-size:28px;line-height:1.35}
.section-title span{color:var(--c-primary)}
.section-desc{margin-top:14px;font-size:16px;color:var(--c-text-2);line-height:1.85}

/* 入口矩阵 */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.entry-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D6D1C6}
.entry-icon{
  width:46px;height:46px;border-radius:12px;background:rgba(59,52,134,.08);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.entry-icon svg{width:22px;height:22px;fill:var(--c-primary)}
.entry-title{font-size:18px;line-height:1.5}
.entry-desc{margin-top:10px;font-size:15px;color:var(--c-text-2);line-height:1.8;flex:1}
.entry-link{margin-top:18px;font-size:14px;display:inline-flex;align-items:center;gap:6px;align-self:flex-start}
.entry-link::before{content:"›";font-size:16px;line-height:1}

/* 时间线 */
.timeline{position:relative;max-width:880px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--c-line)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-34px;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-teal);
}
.tl-dot::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:6px;height:6px;border-radius:50%;background:var(--c-teal)}
.tl-step{
  font-family:var(--font-sans);font-size:13px;font-weight:700;color:var(--c-primary);
  letter-spacing:.08em;font-variant-numeric:tabular-nums;
}
.tl-title{font-size:19px;margin-top:6px}
.tl-desc{margin-top:8px;font-size:15px;color:var(--c-text-2);line-height:1.8;max-width:44em}
.tl-tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}

/* 通道对比表 */
.tier-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.tier-table{width:100%;border-collapse:collapse;font-size:15px}
.tier-table caption{text-align:left;padding:24px 26px 6px;font-family:var(--font-serif);font-size:18px;font-weight:700}
.tier-table th,.tier-table td{padding:0 26px;height:56px;text-align:left;border-bottom:1px solid var(--c-line);vertical-align:middle}
.tier-table thead th{font-size:14px;color:var(--c-text-3);font-weight:600;height:52px}
.tier-table tbody th{font-weight:600;color:var(--c-text-2);font-size:14px;width:150px}
.tier-table tbody tr:last-child th,.tier-table tbody tr:last-child td{border-bottom:0}
.tier-hl{background:rgba(232,163,61,.07);border-top:4px solid var(--c-accent);position:relative}
.tier-table thead .tier-hl{height:52px}
.tier-price{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--c-text);font-variant-numeric:tabular-nums}
.tier-price small{font-size:12px;font-weight:400;color:var(--c-text-3);margin-left:4px}
.tier-cards{display:none}

/* 资讯列表 */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease;
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-cover{overflow:hidden;background:var(--c-night-800)}
.news-cover img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{
  font-size:17px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  font-size:14px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.news-time{font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-card);background:var(--c-surface);
}
.empty-state svg{width:40px;height:40px;fill:var(--c-text-3);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--c-text-2)}
.empty-state .btn{margin-top:18px}

/* 用户评价 */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:18px;
}
.voice-quote{font-family:var(--font-serif);font-size:30px;line-height:1;color:var(--c-accent)}
.voice-text{font-size:15px;color:var(--c-text-2);line-height:1.85;flex:1}
.voice-person{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--c-line)}
.voice-avatar{
  width:44px;height:44px;border-radius:50%;flex:none;object-fit:cover;aspect-ratio:1/1;
}
.voice-name{font-size:15px;font-weight:600}
.voice-role{font-size:13px;color:var(--c-text-3);margin-top:2px}

/* FAQ */
.faq{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;cursor:pointer;list-style:none;
  font-family:var(--font-serif);
}
.faq-q::-webkit-details-marker{display:none}
.faq-sign{
  position:relative;width:18px;height:18px;flex:none;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);transform:translate(-50%,-50%);
}
.faq-sign::before{width:14px;height:2px}
.faq-sign::after{width:2px;height:14px;transition:transform .24s ease}
.faq-item[open] .faq-sign::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:62em}

/* 报名表单 */
.signup-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:start}
.value-col{grid-column:span 4}
.form-col{grid-column:span 8}
.value-list{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.value-item{display:flex;gap:12px;font-size:15px;color:var(--c-text-2);line-height:1.75}
.value-item svg{width:20px;height:20px;flex:none;margin-top:4px;fill:var(--c-teal)}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-2);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-field label{font-size:14px;font-weight:600;color:var(--c-text-2)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-bg);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.7}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--c-text-3)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;background:var(--c-surface);border-color:var(--c-primary);box-shadow:0 0 0 1px rgba(59,52,134,.4);
}
.form-field.has-error input,.form-field.has-error select{border-color:var(--c-danger)}
.field-error{font-size:13px;color:var(--c-danger);min-height:0}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.check-row input{width:18px;height:18px;min-height:auto;margin-top:3px;flex:none}
.alert{
  display:none;border-radius:var(--r-btn);padding:12px 16px;font-size:14px;line-height:1.7;margin-bottom:18px;
}
.alert.show{display:block}
.alert-success{background:rgba(78,159,107,.10);border-left:3px solid var(--c-success);color:#2F6B47}
.alert-error{background:rgba(196,85,63,.09);border-left:3px solid var(--c-danger);color:#8E3A29}
.form-note{margin-top:14px;font-size:13px;color:var(--c-text-3);line-height:1.7}

/* 深色 CTA 条 */
.cta-band{
  background-color:var(--c-night-900);
  background-image:
    linear-gradient(rgba(18,16,31,.9),rgba(18,16,31,.94)),
    radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px),
    url('/assets/images/backpic/back-1.webp');
  background-size:auto,18px 18px,cover;
  background-position:center,0 0,center;
  padding:64px 0;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px;max-width:38em;line-height:1.8}

/* ============ 页脚 ============ */
.site-footer{
  background-color:var(--c-night-900);
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:18px 18px;
  color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-serif);font-size:18px;font-weight:700}
.footer-brand .logo-mark{background:rgba(255,255,255,.10)}
.footer-brand .logo-mark svg{fill:var(--c-accent)}
.footer-about{margin-top:16px;line-height:1.85;max-width:32em;color:rgba(255,255,255,.62)}
.footer-col h3{color:#fff;font-size:15px;font-family:var(--font-sans);font-weight:700;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .sep{opacity:.5}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .channel-nav a{margin-right:22px;font-size:14px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .news-list{grid-template-columns:repeat(2,1fr)}
  .voice-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .brand-row{height:66px}
  .site-search{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:56px 0 64px}
  .hero-copy{grid-column:span 12}
  .hero-media{grid-column:span 12;margin-top:8px}
  .hero h1{font-size:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--c-line)}
  .signup-grid{gap:24px}
  .value-col{grid-column:span 12}
  .form-col{grid-column:span 12}
  .form-card{padding:26px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .hero h1{font-size:28px;line-height:1.35}
  .hero-sub{font-size:16px}
  .section-title{font-size:24px}
  .entry-grid{grid-template-columns:1fr}
  .news-list{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .tier-wrap{display:none}
  .tier-cards{display:flex;flex-direction:column;gap:18px}
  .tier-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:22px 20px;box-shadow:var(--sh-1);
  }
  .tier-card.is-rec{border-top:4px solid var(--c-accent)}
  .tier-card h3{font-size:18px;display:flex;align-items:center;gap:10px}
  .tier-card dl{margin:16px 0 0;display:flex;flex-direction:column;gap:0}
  .tier-card dt,.tier-card dd{
    display:flex;justify-content:space-between;gap:16px;padding:11px 0;margin:0;
    border-bottom:1px solid var(--c-line);font-size:14px;
  }
  .tier-card dt{color:var(--c-text-3)}
  .tier-card dd:last-child{border-bottom:0;color:var(--c-text-3)}
  .timeline{padding-left:26px}
  .timeline::before{left:5px}
  .tl-dot{left:-26px;width:14px;height:14px}
  .tl-dot::after{width:5px;height:5px}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .stat{border-left:0;border-top:1px solid var(--c-line);padding:22px 8px}
  .stat:first-child{border-top:0}
  .logo-text{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --c-night-900:#12101F;
  --c-night-800:#1B1832;
  --c-night-700:#262246;
  --c-primary:#3B3486;
  --c-primary-600:#4A41A8;
  --c-accent:#E8A33D;
  --c-accent-700:#CE8A22;
  --c-teal:#4FB8AE;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E6E3DC;
  --c-text:#1E1B2E;
  --c-text-2:#5A5670;
  --c-text-3:#8C889B;
  --c-success:#4E9F6B;
  --c-warning:#D98A2B;
  --c-danger:#C4553F;
  --sh-1:0 1px 2px rgba(24,20,45,.06);
  --sh-2:0 6px 20px -8px rgba(24,20,45,.14);
  --sh-3:0 14px 34px -12px rgba(24,20,45,.22);
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-primary-600);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-title);color:var(--c-text);margin:0;line-height:1.35;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
::selection{background:rgba(232,163,61,.28);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}
@media (max-width:991px){.container{padding:0 20px;}}
@media (max-width:767px){.container{padding:0 16px;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:16px;font-weight:600;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#241A05;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent-700);color:#241A05;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-secondary:hover{background:rgba(59,52,134,.06);color:var(--c-primary);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-line);}
.btn-ghost:hover{background:rgba(59,52,134,.06);border-color:var(--c-primary);color:var(--c-primary);}
.btn-link{display:inline-flex;align-items:center;height:auto;padding:0;color:var(--c-primary);font-weight:600;position:relative;background:none;border:none;cursor:pointer;}
.btn-link::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--c-primary);transition:width .2s ease;}
.btn-link:hover::after{width:100%;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-xs);
  font-size:13px;font-weight:600;line-height:1;
}
.badge-teal{background:rgba(79,184,174,.12);color:#2E7F78;}
.badge-accent{background:rgba(232,163,61,.16);color:#97651A;}
.badge-primary{background:rgba(59,52,134,.08);color:var(--c-primary);}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow .22s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.brand-row{display:flex;align-items:center;gap:20px;min-height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);flex:0 0 auto;}
.logo:hover{color:var(--c-text);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;fill:var(--c-accent);}
.logo-text{font-family:var(--font-title);font-size:19px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.site-search{
  flex:1 1 auto;max-width:340px;display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#FBFAF8;transition:border-color .2s ease,box-shadow .2s ease;
}
.site-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 1px rgba(59,52,134,.16);}
.site-search svg{width:16px;height:16px;fill:var(--c-text-3);flex:0 0 auto;}
.site-search input{flex:1 1 auto;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-text);}
.site-search input::placeholder{color:var(--c-text-3);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:12px;width:18px;height:2px;background:var(--c-text);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{left:0;top:-6px;}
.nav-toggle span::after{left:0;top:6px;}
.site-header.nav-open .nav-toggle span{background:transparent;}
.site-header.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
.site-header.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}
.channel-row{border-top:1px solid var(--c-line);background:var(--c-surface);}
.channel-nav{display:flex;align-items:center;gap:28px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;display:inline-block;padding:14px 0 13px;font-size:15px;color:var(--c-text-2);
  white-space:nowrap;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.channel-nav a:hover{color:var(--c-primary);}
.channel-nav a.active{color:var(--c-text);font-weight:700;border-bottom-color:var(--c-primary);}
@media (max-width:991px){
  .site-search{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-block;}
  .channel-row{display:none;}
  .site-header.nav-open .channel-row{
    display:block;position:absolute;left:0;right:0;top:100%;
    background:var(--c-surface);border-top:1px solid var(--c-line);
    box-shadow:var(--sh-3);padding:12px 0 20px;
  }
  .site-header.nav-open .channel-nav{flex-direction:column;gap:0;padding:0 20px;}
  .site-header.nav-open .channel-nav a{width:100%;padding:14px 0;border-bottom:1px solid var(--c-line);}
  .site-header.nav-open .channel-nav a.active{border-bottom-color:var(--c-line);color:var(--c-primary);}
}
@media (max-width:560px){
  .brand-row{min-height:64px;gap:12px;}
  .logo-text{font-size:16px;}
  .btn-sm{height:38px;padding:0 14px;font-size:13px;}
}
body.no-scroll{overflow:hidden;}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line);}
.crumb .current{color:var(--c-text);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-hero{padding:48px 0 40px;}
.article-hero .hero-inner{max-width:920px;}
.article-hero h1{font-size:40px;line-height:1.28;margin:14px 0 0;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;
  padding-bottom:22px;border-bottom:1px solid var(--c-line);font-size:14px;color:var(--c-text-2);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-cover{margin-top:28px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
@media (max-width:767px){
  .article-hero{padding:32px 0 28px;}
  .article-hero h1{font-size:28px;line-height:1.34;}
}

/* ============ 文章布局 ============ */
.article-main-wrap{padding:0 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);}
.article-body > * + *{margin-top:1.18em;}
.article-body h2{
  font-size:24px;line-height:1.5;margin-top:2.2em;margin-bottom:.7em;position:relative;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:4px;height:18px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20px;line-height:1.55;margin-top:1.8em;margin-bottom:.6em;}
.article-body p{margin:0;}
.article-body ul,.article-body ol{padding-left:1.5em;list-style:revert;}
.article-body li + li{margin-top:.5em;}
.article-body img{border-radius:12px;margin:1.6em auto;max-width:100%;height:auto;}
.article-body blockquote{
  margin:1.8em 0;padding:16px 20px;border-left:3px solid var(--c-teal);
  background:#F2F1EC;border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-text-2);font-size:16px;
}
.article-body blockquote p + p{margin-top:.7em;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;}
.article-body th,.article-body td{padding:12px 10px;border-bottom:1px solid var(--c-line);text-align:left;}
.article-body th{font-weight:700;color:var(--c-text);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:#F1F0EC;border-radius:6px;padding:2px 6px;
}
.article-body pre{
  background:#F1F0EC;border-radius:var(--r-sm);padding:16px 18px;overflow:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;padding:0;}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px;}
.article-body a{border-bottom:1px solid rgba(59,52,134,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}

.empty-state{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:48px 28px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:rgba(79,184,174,.12);
  display:flex;align-items:center;justify-content:center;
}
.empty-state .empty-icon svg{width:26px;height:26px;fill:#2E7F78;}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:20px;}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px;box-shadow:var(--sh-1);}
.aside-title{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--c-line);}
.toc-list li + li{margin-top:10px;}
.toc-list a{font-size:14px;color:var(--c-text-2);display:inline-flex;align-items:center;gap:8px;}
.toc-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-teal);flex:0 0 auto;}
.toc-list a:hover{color:var(--c-primary);}
.info-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;padding:8px 0;border-bottom:1px dashed var(--c-line);}
.info-list li:last-child{border-bottom:0;}
.info-list span{color:var(--c-text-3);flex:0 0 auto;}
.info-list strong{font-weight:600;color:var(--c-text);text-align:right;}
.aside-cta{background:var(--c-night-800);border-color:var(--c-night-700);}
.aside-cta .aside-title{color:#fff;border-bottom-color:rgba(255,255,255,.16);}
.aside-cta p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-aside .aside-card{flex:1 1 280px;}
}
@media (max-width:640px){
  .article-aside{flex-direction:column;}
}

/* ============ 文章尾部 ============ */
.article-foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:14px;color:var(--c-text-3);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:20px;font-size:14px;}
.share-row .label{color:var(--c-text-3);}
.share-row a{color:var(--c-text-2);position:relative;}
.share-row a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--c-primary);transition:width .2s ease;}
.share-row a:hover{color:var(--c-primary);}
.share-row a:hover::after{width:100%;}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ============ 相关推荐 ============ */
.rel-section{padding:0 0 96px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:28px;line-height:1.4;}
.section-head p{font-size:15px;color:var(--c-text-2);margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .22s ease,transform .22s ease;
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.rel-card .thumb{overflow:hidden;background:#EFEEE9;}
.rel-card .thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rel-card h3{font-size:18px;line-height:1.5;}
.rel-card p{font-size:14px;color:var(--c-text-2);line-height:1.7;}
.rel-card .go{margin-top:auto;padding-top:8px;}
@media (max-width:991px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.rel-grid{grid-template-columns:minmax(0,1fr);}}

/* ============ 深色 CTA ============ */
.cta-band{position:relative;background:var(--c-night-900);color:#fff;padding:72px 0;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1.2px);
  background-size:22px 22px;opacity:.16;pointer-events:none;
}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.4;}
.cta-inner p{color:rgba(255,255,255,.74);font-size:15px;margin-top:10px;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:767px){
  .cta-band{padding:56px 0;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-night-900);color:rgba(255,255,255,.72);padding:64px 0 28px;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1.2px);
  background-size:24px 24px;opacity:.14;pointer-events:none;
}
.site-footer .container{position:relative;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-title);font-size:18px;font-weight:700;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:42ch;}
.footer-col h3{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col li + li{margin-top:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;transition:color .2s ease;}
.footer-col a:hover{color:var(--c-accent);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.56);}
.footer-bottom .sep{margin:0 6px;color:rgba(255,255,255,.28);}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-night-900:#12101F;
  --c-night-800:#1B1832;
  --c-night-700:#262246;
  --c-primary:#3B3486;
  --c-primary-600:#4A41A8;
  --c-accent:#E8A33D;
  --c-accent-700:#CE8A22;
  --c-teal:#4FB8AE;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E6E3DC;
  --c-text:#1E1B2E;
  --c-text-2:#5A5670;
  --c-text-3:#8C889B;
  --c-success:#4E9F6B;
  --c-warning:#D98A2B;
  --c-danger:#C4553F;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(24,20,45,.06);
  --sh-2:0 6px 20px -8px rgba(24,20,45,.14);
  --sh-3:0 14px 34px -12px rgba(24,20,45,.22);
  --container:1200px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
@media (min-width:1440px){
  :root{--container:1280px;}
}

/* ============ reset & base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-600);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--c-text);margin:0;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:991px){.container{padding:0 20px;}}
@media (max-width:520px){.container{padding:0 16px;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--c-accent);color:#1E1B2E;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent-700);color:#1E1B2E;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-secondary:hover{background:#F1EFF9;color:var(--c-primary);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-line);}
.btn-ghost:hover{background:#F1EFF9;border-color:var(--c-primary);color:var(--c-primary);}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 头部 & 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.brand-row{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:74px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  flex-shrink:0;
}
.logo:hover{color:var(--c-primary);}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--c-primary);
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.logo-mark svg{width:19px;height:19px;fill:#fff;}
.logo-text{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.site-search{
  flex:1;
  max-width:340px;
  display:flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 14px;
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  transition:border-color .2s ease,background-color .2s ease;
}
.site-search:focus-within{border-color:var(--c-primary);background:var(--c-surface);}
.site-search svg{width:17px;height:17px;fill:var(--c-text-3);flex-shrink:0;}
.site-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
}
.site-search input::placeholder{color:var(--c-text-3);}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--c-text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

.channel-row{
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
}
.channel-nav{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;
  padding:15px 16px;
  font-size:15px;
  color:var(--c-text-2);
  border-bottom:2px solid transparent;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease;
}
.channel-nav a:hover{color:var(--c-text);}
.channel-nav a.active{
  color:var(--c-text);
  font-weight:700;
  border-bottom-color:var(--c-primary);
}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  background:var(--c-night-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(18,16,31,.84);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1.2px);
  background-size:24px 24px;
  opacity:.16;
  pointer-events:none;
}
.page-hero .hero-inner{
  position:relative;
  z-index:2;
  padding:64px 0 72px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(255,255,255,.38);}
.breadcrumb .current{color:#fff;}
.page-hero h1{
  font-size:40px;
  line-height:1.28;
  color:#fff;
  max-width:820px;
}
.page-hero .hero-lead{
  margin-top:18px;
  max-width:660px;
  font-size:16.5px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
  margin-top:28px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts li{
  display:flex;
  align-items:baseline;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.hero-facts strong{
  font-family:var(--font-serif);
  font-size:17px;
  color:var(--c-accent);
  font-weight:700;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-actions .btn-secondary{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.5);
}
.hero-actions .btn-secondary:hover{
  background:rgba(255,255,255,.12);
  color:#fff;
  border-color:#fff;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-teal);
  font-weight:700;
  margin-bottom:12px;
}
.section-head h2{
  font-size:28px;
  line-height:1.4;
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text-2);
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .page-hero .hero-inner{padding:40px 0 52px;}
  .page-hero h1{font-size:28px;line-height:1.36;}
  .section-head h2{font-size:23px;}
}

/* ============ 通道矩阵 ============ */
.matrix{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.matrix-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.matrix-card:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-3px);
  border-color:#D6D1E6;
}
.matrix-icon{
  width:46px;
  height:46px;
  border-radius:12px;
  background:#F1EFF9;
  display:grid;
  place-items:center;
}
.matrix-icon svg{width:22px;height:22px;fill:var(--c-primary);}
.matrix-card h3{font-size:19px;}
.matrix-card p{font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
.matrix-card .meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-text-3);
}
@media (max-width:991px){
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:520px){
  .matrix{grid-template-columns:1fr;}
}

/* ============ 标签 & 徽章 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-badge);
  font-size:12.5px;
  font-weight:600;
  background:rgba(79,184,174,.12);
  color:#2E7A73;
}
.tag-accent{background:rgba(232,163,61,.16);color:#8A5A0C;}
.tag-muted{background:#F1F0EC;color:var(--c-text-2);}

/* ============ 图文交替 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  background:var(--c-bg);
}
.split-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  transition:transform .4s ease;
}
.split-media:hover img{transform:scale(1.03);}
.split-body h3{font-size:22px;margin-bottom:14px;}
.split-body p{font-size:16px;line-height:1.85;color:var(--c-text-2);}
.split-body p + p{margin-top:12px;}
.split.reverse .split-media{order:2;}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:26px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:52px;}
}

/* ============ 短列表 ============ */
.tick-list{margin-top:18px;display:grid;gap:10px;}
.tick-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15.5px;
  color:var(--c-text);
}
.tick-list li::before{
  content:"";
  flex-shrink:0;
  width:16px;
  height:16px;
  margin-top:5px;
  border-radius:50%;
  background:rgba(79,184,174,.16);
  box-shadow:inset 0 0 0 2px var(--c-teal);
}

/* ============ 步骤条 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  padding-top:8px;
}
.step{
  position:relative;
  padding:34px 28px 0 0;
}
.step::before{
  content:"";
  position:absolute;
  top:6px;
  left:14px;
  right:0;
  height:2px;
  background:var(--c-line);
}
.step:last-child::before{display:none;}
.step .dot{
  position:absolute;
  top:0;
  left:0;
  width:14px;
  height:14px;
  border-radius:50%;
  background:var(--c-teal);
  box-shadow:0 0 0 5px rgba(79,184,174,.14);
}
.step .step-no{
  font-family:var(--font-serif);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin:6px 0 8px;}
.step p{font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
@media (max-width:767px){
  .steps{grid-template-columns:1fr;}
  .step{padding:0 0 26px 30px;}
  .step::before{
    left:6px;
    right:auto;
    top:14px;
    bottom:0;
    width:2px;
    height:auto;
  }
  .step:last-child{padding-bottom:0;}
  .step:last-child::before{display:none;}
  .step .dot{top:4px;left:0;}
}

/* ============ 对照表 ============ */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-card);
}
.spec-table{
  width:100%;
  min-width:620px;
  border-collapse:collapse;
  background:var(--c-surface);
}
.spec-table caption{
  text-align:left;
  font-size:14px;
  color:var(--c-text-3);
  padding-bottom:12px;
}
.spec-table th{
  text-align:left;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--c-text-3);
  padding:14px 18px;
  border-bottom:1px solid var(--c-line);
  background:#FBFAF7;
}
.spec-table td{
  padding:18px;
  font-size:15px;
  line-height:1.7;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
.spec-table tr:last-child td{border-bottom:0;}
.spec-table td:first-child{
  color:var(--c-text);
  font-weight:600;
  width:34%;
}

/* ============ 目录 + 正文布局 ============ */
.guide-layout{
  display:grid;
  grid-template-columns:262px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh-1);
}
.toc h2{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-text-3);
  font-weight:700;
  font-family:var(--font-sans);
}
.toc ul{margin-top:14px;display:grid;gap:2px;}
.toc a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--c-text-2);
  border-left:2px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.toc a:hover{background:#F4F3FA;color:var(--c-primary);}
.toc a.active{
  background:#F1EFF9;
  color:var(--c-primary);
  font-weight:600;
  border-left-color:var(--c-primary);
}
.toc .toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  line-height:1.7;
  color:var(--c-text-3);
}
@media (max-width:991px){
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .toc{position:static;padding:16px;}
  .toc ul{
    display:flex;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
    margin-top:12px;
  }
  .toc ul::-webkit-scrollbar{display:none;}
  .toc a{white-space:nowrap;border-left:0;background:#F4F3FA;}
  .toc .toc-note{display:none;}
}

.article-block{
  scroll-margin-top:110px;
  padding-bottom:48px;
  margin-bottom:48px;
  border-bottom:1px solid var(--c-line);
}
.article-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.article-block h2{
  font-size:26px;
  line-height:1.45;
  position:relative;
  padding-left:16px;
  margin-bottom:20px;
}
.article-block h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.34em;
  width:4px;
  height:20px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-block > p{
  font-size:17px;
  line-height:1.9;
  color:var(--c-text-2);
}
.article-block > p + p{margin-top:1.15em;}
.article-block h3{
  font-size:20px;
  margin:32px 0 12px;
}
@media (max-width:767px){
  .article-block h2{font-size:22px;}
  .article-block > p{font-size:16.5px;line-height:1.85;}
}

/* ============ 提示条 ============ */
.notice{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px 18px;
  border-radius:12px;
  background:#FBFAF7;
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-teal);
  font-size:14.5px;
  line-height:1.78;
  color:var(--c-text-2);
  margin-top:24px;
}
.notice strong{color:var(--c-text);}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{box-shadow:var(--sh-2);border-color:#D6D1E6;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  font-size:17px;
  font-weight:700;
  color:var(--c-text);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  line-height:1;
  color:var(--c-primary);
  flex-shrink:0;
  transition:transform .24s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-answer{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
}
@media (max-width:520px){
  .faq-item summary{font-size:16px;padding:18px 18px;}
  .faq-answer{padding:0 18px 20px;}
}

/* ============ 报名 CTA ============ */
.signup{
  position:relative;
  background:var(--c-night-900);
  color:#fff;
  overflow:hidden;
}
.signup::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1.2px);
  background-size:26px 26px;
  opacity:.14;
  pointer-events:none;
}
.signup .container{position:relative;z-index:2;}
.signup-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.signup-intro h2{
  color:#fff;
  font-size:30px;
  line-height:1.4;
}
.signup-intro p{
  margin-top:16px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(255,255,255,.74);
}
.value-list{margin-top:28px;display:grid;gap:14px;}
.value-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:rgba(255,255,255,.9);
}
.value-list li::before{
  content:"";
  flex-shrink:0;
  width:18px;
  height:18px;
  margin-top:4px;
  border-radius:6px;
  background:rgba(232,163,61,.2);
  box-shadow:inset 0 0 0 2px var(--c-accent);
}
.form-card{
  background:var(--c-surface);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-3);
  color:var(--c-text);
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-sub{
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:24px;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{
  font-size:14px;
  font-weight:600;
  color:var(--c-text);
}
.field label .req{color:var(--c-danger);}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  font-size:15px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:var(--c-text-3);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(59,52,134,.12);
}
.field .error-text{
  font-size:13px;
  color:var(--c-danger);
  display:none;
}
.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea{border-color:var(--c-danger);}
.field.is-invalid .error-text{display:block;}
.checkbox-row{
  grid-column:1 / -1;
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.7;
}
.checkbox-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary);flex-shrink:0;}
.alert{
  display:none;
  align-items:flex-start;
  gap:10px;
  padding:14px 16px;
  border-radius:12px;
  font-size:14.5px;
  line-height:1.7;
  margin-bottom:18px;
}
.alert.is-visible{display:flex;}
.alert-success{
  background:rgba(78,159,107,.1);
  border-left:3px solid var(--c-success);
  color:#2F6B47;
}
.alert-error{
  background:rgba(196,85,63,.09);
  border-left:3px solid var(--c-danger);
  color:#8C3A2A;
}
.form-actions{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:4px;
}
.form-actions .hint{font-size:13px;color:var(--c-text-3);}
@media (max-width:991px){
  .signup-grid{grid-template-columns:1fr;gap:32px;}
  .signup-intro h2{font-size:24px;}
  .form-card{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .form-card{padding:20px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-night-900);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1.2px);
  background-size:28px 28px;
  opacity:.12;
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,3fr) minmax(0,3fr);
  gap:48px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .logo-mark{background:var(--c-primary);}
.footer-about{
  font-size:14.5px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  max-width:420px;
}
.footer-col h3{
  color:#fff;
  font-size:15px;
  font-family:var(--font-sans);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14.5px;
  color:rgba(255,255,255,.68);
}
.footer-col a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding-top:24px;
  font-size:13.5px;
  color:rgba(255,255,255,.5);
}
.footer-bottom .sep{margin:0 6px;opacity:.5;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:520px){
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* ============ 移动端导航 ============ */
@media (max-width:767px){
  .brand-row{min-height:64px;gap:12px;}
  .logo-text{font-size:16.5px;}
  .site-search{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:block;}
  .channel-row{display:none;}
  .channel-row.is-open{display:block;border-top:1px solid var(--c-line);}
  .channel-nav{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 0 16px;
  }
  .channel-nav a{
    padding:13px 4px;
    border-bottom:1px solid var(--c-line);
    border-left:0;
    font-size:15px;
  }
  .channel-nav a.active{
    color:var(--c-primary);
    background:#F4F3FA;
    border-radius:8px;
    border-bottom-color:var(--c-line);
    padding-left:12px;
  }
}
@media (max-width:520px){
  .hero-facts{gap:12px 22px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-night-900:#12101F;
  --c-night-800:#1B1832;
  --c-night-700:#262246;
  --c-primary:#3B3486;
  --c-primary-600:#4A41A8;
  --c-accent:#E8A33D;
  --c-accent-700:#CE8A22;
  --c-teal:#4FB8AE;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E6E3DC;
  --c-text:#1E1B2E;
  --c-text-2:#5A5670;
  --c-text-3:#8C889B;
  --c-success:#4E9F6B;
  --c-warning:#D98A2B;
  --c-danger:#C4553F;
  --sh-1:0 1px 2px rgba(24,20,45,.06);
  --sh-2:0 6px 20px -8px rgba(24,20,45,.14);
  --sh-3:0 14px 34px -12px rgba(24,20,45,.22);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-badge:6px;
  --t:200ms;
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ------- 按钮 ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#231A08;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-700);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:rgba(59,52,134,.35)}
.btn-ghost:hover{background:rgba(59,52,134,.06);border-color:var(--c-primary)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{min-height:38px;padding:0 14px;font-size:14px}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.link-more{color:var(--c-primary);font-weight:600;font-size:15px;position:relative;display:inline-block}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--c-primary);transition:width var(--t)}
.link-more:hover::after{width:100%}

/* ------- 头部 ------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.brand-row{display:flex;align-items:center;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--c-night-900);display:grid;place-items:center;flex-shrink:0}
.logo-mark svg{width:18px;height:18px;fill:var(--c-accent)}
.logo-text{font-family:var(--font-title);font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--c-text)}
.site-search{
  flex:1;max-width:360px;display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-bg);transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.site-search svg{width:17px;height:17px;fill:var(--c-text-3);flex-shrink:0}
.site-search input{flex:1;border:0;background:transparent;outline:none;font-size:14.5px;min-width:0}
.site-search input::placeholder{color:var(--c-text-3)}
.site-search:focus-within{border-color:var(--c-primary);background:var(--c-surface);box-shadow:0 0 0 3px rgba(59,52,134,.10)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:var(--c-surface);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;transition:transform var(--t),opacity var(--t);
}
.nav-toggle span::before{position:absolute;top:-6px;left:0}
.nav-toggle span::after{position:absolute;top:6px;left:0}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

.channel-row{border-top:1px solid var(--c-line);background:var(--c-surface)}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;display:inline-block;padding:13px 16px;font-size:15px;color:var(--c-text-2);
  border-bottom:2px solid transparent;transition:color var(--t),border-color var(--t);white-space:nowrap;
}
.channel-nav a:hover{color:var(--c-text)}
.channel-nav a.active{color:var(--c-text);font-weight:700;border-bottom-color:var(--c-primary)}

.nav-drawer{
  position:fixed;inset:0;z-index:120;background:rgba(18,16,31,.55);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.nav-drawer.is-open{opacity:1;visibility:visible}
.nav-drawer-panel{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:var(--c-surface);padding:28px 22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(12px);transition:transform var(--t);
}
.nav-drawer.is-open .nav-drawer-panel{transform:translateX(0)}
.nav-drawer-panel a{padding:13px 12px;border-radius:var(--r-btn);font-size:16px;color:var(--c-text-2)}
.nav-drawer-panel a:hover{background:var(--c-bg);color:var(--c-text)}
.nav-drawer-panel a.active{color:var(--c-primary);font-weight:700;background:rgba(59,52,134,.06)}
.nav-drawer-panel .btn{margin-top:16px;color:#231A08}

/* ------- 面包屑 ------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
.crumb a{color:rgba(255,255,255,.85)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.crumb .sep{opacity:.5}
.crumb .now{color:#fff;font-weight:600}

/* ------- 内页 Hero ------- */
.page-hero{position:relative;background:var(--c-night-900);color:#fff;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.42) 1px,transparent 1px);
  background-size:16px 16px;opacity:.16;
}
.page-hero .container{position:relative;z-index:2;padding-top:34px;padding-bottom:64px}
.hero-body{max-width:760px;margin-top:28px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:var(--r-badge);
  background:rgba(79,184,174,.16);color:#9FE3DC;font-size:13px;font-weight:600;letter-spacing:.04em;
}
.hero-body h1{
  font-family:var(--font-title);font-size:40px;line-height:1.2;font-weight:700;
  margin:18px 0 16px;letter-spacing:.01em;
}
.hero-sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:640px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:26px;font-size:14.5px;color:rgba(255,255,255,.78)}
.hero-facts strong{color:#fff;font-weight:600;font-variant-numeric:tabular-nums}
.hero-facts .dot{width:6px;height:6px;border-radius:50%;background:var(--c-teal);display:inline-block;margin-right:8px;vertical-align:middle}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* ------- 区块通用 ------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-family:var(--font-title);font-size:28px;line-height:1.35;font-weight:700}
.section-head p{margin-top:14px;color:var(--c-text-2);font-size:16px}
.section-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--c-primary);margin-bottom:10px}
.bg-surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

/* ------- 数据条 ------- */
.stat-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:30px 24px;text-align:left;border-left:1px solid var(--c-line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{
  display:block;font-family:var(--font-title);font-size:32px;line-height:1.2;font-weight:700;
  color:var(--c-primary);font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--c-text-2)}
.stat-label{display:block;margin-top:6px;font-size:14px;color:var(--c-text-2)}

/* ------- 步骤条 ------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:8px}
.step{position:relative;padding:0 18px 0 0}
.step::before{
  content:"";position:absolute;top:19px;left:0;right:0;height:2px;background:var(--c-line);
}
.step:last-child::before{display:none}
.step-dot{
  position:relative;z-index:2;width:40px;height:40px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-primary);color:var(--c-primary);
  display:grid;place-items:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.step:nth-child(1) .step-dot{background:var(--c-primary);color:#fff}
.step-title{margin-top:18px;font-size:17px;font-weight:700}
.step-desc{margin-top:8px;font-size:14.5px;color:var(--c-text-2);line-height:1.7;max-width:210px}
.step-tag{display:inline-block;margin-top:12px;font-size:12.5px;color:#2C7C74;background:rgba(79,184,174,.14);border-radius:var(--r-badge);padding:3px 9px}

/* ------- 图集网格 ------- */
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.g-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);
  display:flex;flex-direction:column;
}
.g-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.g-thumb{aspect-ratio:3/2;overflow:hidden;background:var(--c-bg)}
.g-thumb img{width:100%;height:100%;transition:transform 400ms ease}
.g-card:hover .g-thumb img{transform:scale(1.03)}
.g-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.g-body h3{font-size:19px;font-weight:700;font-family:var(--font-title)}
.g-body p{font-size:15px;color:var(--c-text-2);line-height:1.75}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:2px}
.tag{display:inline-block;font-size:12.5px;padding:4px 10px;border-radius:var(--r-badge);background:rgba(79,184,174,.14);color:#2C7C74;font-weight:600}
.tag-accent{background:rgba(232,163,61,.18);color:#8A5A10}
.tag-primary{background:rgba(59,52,134,.09);color:var(--c-primary)}
.g-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;align-items:center;font-size:13.5px;color:var(--c-text-3);font-variant-numeric:tabular-nums}

/* ------- 对照表 ------- */
.table-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow-x:auto}
.compare-table{min-width:760px;font-size:15px}
.compare-table th,.compare-table td{padding:0 22px;height:56px;text-align:left;border-bottom:1px solid var(--c-line);vertical-align:middle}
.compare-table thead th{
  height:60px;font-size:14px;font-weight:700;color:var(--c-text-2);letter-spacing:.03em;
  background:var(--c-bg);white-space:nowrap;
}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr:hover{background:rgba(59,52,134,.03)}
.compare-table td strong{font-weight:700}
.compare-table .num{font-variant-numeric:tabular-nums}
.badge-rec{display:inline-block;margin-left:8px;font-size:12px;padding:2px 8px;border-radius:var(--r-badge);background:var(--c-accent);color:#231A08;font-weight:700}
.table-note{margin-top:14px;font-size:13.5px;color:var(--c-text-3)}

/* ------- 场景列表 ------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-teal);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.scene-card h3{font-size:17.5px;font-weight:700;margin-bottom:12px;font-family:var(--font-title)}
.scene-card ul{display:flex;flex-direction:column;gap:8px}
.scene-card li{font-size:14.5px;color:var(--c-text-2);padding-left:16px;position:relative}
.scene-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);opacity:.55}

/* ------- FAQ ------- */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:17px;font-weight:700;transition:background var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;background:var(--c-primary);
  transform:translateY(-50%);transition:transform var(--t);
}
.faq-item summary::before{
  content:"";position:absolute;right:30px;top:50%;width:2px;height:14px;background:var(--c-primary);
  transform:translateY(-50%);transition:transform var(--t),opacity var(--t);
}
.faq-item[open] summary::before{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-item summary:hover{background:rgba(59,52,134,.04)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);border-top:1px solid var(--c-line);padding-top:18px}

/* ------- 报名 CTA ------- */
.signup{background:var(--c-night-900);color:#fff;position:relative;overflow:hidden}
.signup::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:18px 18px;opacity:.14;
}
.signup .container{position:relative;z-index:2}
.signup-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.signup h2{font-family:var(--font-title);font-size:28px;line-height:1.35;font-weight:700}
.signup .lead{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.78)}
.value-list{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.value-item{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.value-item .ic{
  width:26px;height:26px;border-radius:8px;background:rgba(232,163,61,.18);color:var(--c-accent);
  display:grid;place-items:center;font-size:14px;font-weight:700;flex-shrink:0;font-variant-numeric:tabular-nums;
}
.form-card{background:var(--c-surface);color:var(--c-text);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-3)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--c-text-2)}
.field input,.field select,.field textarea{
  height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-bg);outline:none;font-size:15px;transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);background:var(--c-surface);box-shadow:0 0 0 3px rgba(59,52,134,.12)}
.field .hint{font-size:13px;color:var(--c-text-3)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--c-text-2);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--c-primary)}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-actions .btn{color:#231A08}
.form-actions .tip{font-size:13px;color:var(--c-text-3)}
.alert{display:none;grid-column:1/-1;padding:12px 16px;border-radius:var(--r-btn);font-size:14.5px}
.alert.show{display:block}
.alert-ok{background:rgba(78,159,107,.10);border-left:3px solid var(--c-success);color:#2F6B47}
.alert-err{background:rgba(196,85,63,.10);border-left:3px solid var(--c-danger);color:#8E3A2A}

/* ------- 页脚 ------- */
.site-footer{background:var(--c-night-900);color:rgba(255,255,255,.72);position:relative;overflow:hidden;padding:72px 0 28px}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.38) 1px,transparent 1px);
  background-size:18px 18px;opacity:.12;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-title);font-size:18px;font-weight:700}
.footer-brand .logo-mark{background:rgba(255,255,255,.08)}
.footer-about{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:420px}
.footer-col h3{font-size:15px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color var(--t)}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{padding-top:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13.5px;color:rgba(255,255,255,.5)}
.footer-bottom .sep{margin-right:8px;opacity:.6}

/* ------- 响应式 ------- */
@media (max-width:1199px){
  .signup-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:991px){
  .container{padding:0 20px}
  .site-search{display:none}
  .nav-toggle{display:flex}
  .brand-row .btn-ghost{display:none}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero-body h1{font-size:32px}
  .page-hero .container{padding-bottom:48px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--c-line)}
  .stat-item{padding:24px 20px}
  .steps{grid-template-columns:1fr 1fr;gap:26px 20px}
  .step{padding-right:0}
  .step::before{display:none}
  .step-desc{max-width:none}
  .gallery-grid{grid-template-columns:1fr;gap:20px}
  .scene-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .brand-row{height:66px;gap:12px}
  .logo-text{font-size:16.5px}
  .nav-actions .btn-primary{display:none}
  .hero-body h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:15.5px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head h2{font-size:23px}
  .section-head.split{flex-direction:column;align-items:flex-start}
  .form-card{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:16px;padding:18px 48px 18px 18px}
  .faq-answer{padding:16px 18px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .stat-row{grid-template-columns:1fr 1fr}
  .stat-num{font-size:26px}
  .steps{grid-template-columns:1fr}
  .g-body{padding:20px}
  .compare-table th,.compare-table td{padding:0 16px}
}