/* roulang page: index */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04), 0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{color:var(--ink-900);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .2s var(--ease);}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:24px;height:24px;display:block;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto;}
.nav-link{position:relative;font-size:16px;color:var(--ink-700);padding:6px 0;white-space:nowrap;transition:color .2s var(--ease);}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .2s var(--ease);}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink-900);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none;}
.nav-search{position:relative;}
.nav-search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--ink-500);}
.nav-search input{
  width:200px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--bg);
  padding:0 16px 0 38px;font-size:14px;
  transition:width .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--ink-500);}
.nav-search input:focus{width:260px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(218,75,44,.2);outline:none;}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-mask{position:fixed;inset:0;background:rgba(16,20,24,.42);opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:90;}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;width:300px;height:100%;background:#fff;z-index:100;
  transform:translateX(101%);transition:transform .25s var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:var(--r-sm);font-size:20px;line-height:1;color:var(--ink-700);}
.drawer-nav a{display:block;line-height:48px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;}
.drawer-foot .btn{width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-line{background:transparent;color:var(--ink-900);border:1px solid var(--line);height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);}
.btn-line:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{height:40px;padding:0 18px;border-radius:var(--r-pill);font-size:15px;}
.btn-block{width:100%;justify-content:center;}
.btn-text{height:auto;padding:0;border-radius:0;background:none;color:var(--ink-900);font-weight:600;}
.btn-text:hover{color:var(--brand);}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg);}
.hero-glow{
  position:absolute;top:-180px;right:-140px;width:680px;height:680px;pointer-events:none;
  background:radial-gradient(circle,rgba(218,75,44,.06),rgba(218,75,44,0) 70%);
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  min-height:720px;padding-top:64px;padding-bottom:64px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand);font-weight:600;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);}
.hero h1{
  font-size:clamp(32px,4.6vw,60px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin-top:18px;
}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.75;color:var(--ink-700);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;margin-top:44px;}
.hero-stats li{padding:0 26px;border-left:1px solid var(--line);}
.hero-stats li:first-child{padding-left:0;border-left:none;}
.hero-stats strong{display:block;font-size:32px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;}
.hero-stats span{font-size:13px;letter-spacing:.06em;color:var(--ink-500);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);pointer-events:none;
  background:linear-gradient(180deg,rgba(218,75,44,.08),rgba(218,75,44,.08));
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.10) 0 1px,transparent 1px 28px),linear-gradient(180deg,rgba(218,75,44,.08),rgba(218,75,44,.08));
}
.hero-badge{
  position:absolute;right:18px;bottom:18px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:12px 16px;box-shadow:var(--shadow-1);display:flex;align-items:center;gap:12px;
}
.hero-badge .dot{width:32px;height:32px;border-radius:var(--r-sm);background:var(--accent);color:var(--ink-block);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;}
.hero-badge strong{display:block;font-size:15px;color:var(--ink-900);line-height:1.3;}
.hero-badge em{font-style:normal;font-size:12px;color:var(--ink-500);letter-spacing:.04em;}

/* ---------- 板块标题 ---------- */
.section-head{margin-bottom:40px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section-head h2{
  display:flex;align-items:center;gap:14px;
  font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
}
.section-head h2::before{content:"";width:3px;height:24px;border-radius:2px;background:var(--brand);flex:none;}
.section-head .rule{width:48px;height:1px;background:var(--line);margin-top:16px;}
.section-desc{margin-top:16px;max-width:800px;font-size:16px;color:var(--ink-500);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink-700);transition:color .2s var(--ease);}
.link-more .arrow{transition:transform .2s var(--ease);}
.link-more:hover{color:var(--brand);}
.link-more:hover .arrow{transform:translateX(4px);}

/* ---------- 权益对比表 ---------- */
.compare-wrap{
  overflow-x:auto;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);
  -webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:820px;border-collapse:collapse;}
table.compare th,table.compare td{
  height:56px;padding:0 22px;text-align:left;font-size:15px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare thead th{
  position:sticky;top:0;z-index:2;background:#fff;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--ink-500);
}
table.compare thead th.col-item{color:var(--ink-900);font-size:14px;}
table.compare tbody tr:nth-child(odd){background:var(--surface);}
table.compare tbody tr:nth-child(even){background:var(--brand-soft);}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare td:first-child{font-weight:600;color:var(--ink-900);white-space:normal;min-width:220px;}
table.compare th.col-rec,table.compare td.col-rec{border-left:1px solid var(--brand);border-right:1px solid var(--brand);}
table.compare thead th.col-rec{background:var(--brand-soft);color:var(--ink-900);}
.badge-rec{
  display:inline-block;margin-left:8px;padding:2px 9px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--ink-block);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.sp-check{
  display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;border-radius:50%;background:var(--brand);color:#fff;font-size:12px;line-height:1;
}
.sp-none{display:inline-block;width:14px;height:1px;background:var(--ink-500);vertical-align:middle;}
.compare-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:28px;}
.compare-foot p{font-size:14px;color:var(--ink-500);}

/* ---------- 等级亮点 ---------- */
.level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.level-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.level-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-hover);}
.level-num{font-size:40px;font-weight:800;line-height:1;color:var(--line);font-variant-numeric:tabular-nums;transition:color .2s var(--ease);}
.level-card:hover .level-num{color:var(--brand);}
.level-card h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.4;}
.level-card .level-note{margin-top:8px;font-size:14px;color:var(--ink-500);}
.level-card ul{margin-top:18px;display:grid;gap:10px;}
.level-card li{position:relative;padding-left:18px;font-size:15px;line-height:1.7;}
.level-card li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;background:var(--brand);}
.level-card.is-featured{background:var(--ink-block);border-color:var(--ink-block);color:#fff;}
.level-card.is-featured h3{color:#fff;}
.level-card.is-featured .level-note{color:#9AA0A6;}
.level-card.is-featured .level-num{color:#4A5055;}
.level-card.is-featured li{color:#C9CDD2;}
.level-card.is-featured li::before{background:var(--accent);}
.tag-accent{
  position:absolute;top:18px;right:18px;
  background:var(--accent);color:var(--ink-block);
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:3px 10px;border-radius:var(--r-pill);
}
.level-cta{margin-top:22px;}

/* ---------- 专属内容预览 ---------- */
.content-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.content-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.content-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line);}
.content-thumb{position:relative;aspect-ratio:16/10;background:var(--bg);overflow:hidden;}
.content-thumb img{width:100%;height:100%;object-fit:cover;}
.thumb-veil{
  position:absolute;left:0;right:0;bottom:0;height:40%;
  background:linear-gradient(to bottom,rgba(255,255,255,0),#fff 78%);
}
.lock-badge{
  position:absolute;right:10px;top:10px;display:inline-flex;align-items:center;gap:6px;
  background:rgba(20,23,26,.82);color:#fff;font-size:12px;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--r-pill);
}
.content-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.content-tag{font-size:13px;letter-spacing:.06em;color:var(--brand);}
.content-body h3{
  font-size:18px;font-weight:600;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.content-body p{font-size:14px;color:var(--ink-500);line-height:1.7;}
.content-body .btn-line{margin-top:auto;align-self:flex-start;}

/* ---------- 最新资讯（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px;}
.news-card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.news-card--lead{grid-row:span 2;}
.news-tag{font-size:13px;letter-spacing:.06em;color:var(--brand);}
.news-title{
  font-size:18px;font-weight:600;line-height:1.45;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-card--lead .news-title{font-size:22px;-webkit-line-clamp:3;}
.news-card:hover .news-title{color:var(--brand);}
.news-excerpt{
  font-size:14px;line-height:1.7;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card--lead .news-excerpt{-webkit-line-clamp:4;}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.news-meta .arrow{transition:transform .2s var(--ease),color .2s var(--ease);}
.news-card:hover .news-meta .arrow{transform:translateX(4px);color:var(--brand);}
.news-empty{
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  color:var(--ink-500);font-size:15px;text-align:center;padding:24px;
}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.cat-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-hover);}
.cat-thumb{aspect-ratio:16/10;background:var(--bg);overflow:hidden;}
.cat-thumb img{width:100%;height:100%;object-fit:cover;}
.cat-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1;}
.cat-body h3{font-size:16px;font-weight:600;line-height:1.45;}
.cat-body p{font-size:13px;line-height:1.65;color:var(--ink-500);}
.cat-body .cat-more{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.cat-card:hover .cat-more .arrow{transform:translateX(4px);}
.cat-more .arrow{transition:transform .2s var(--ease);}

/* ---------- 常见问题 ---------- */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;margin:0 -16px;padding:12px 16px;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-900);list-style:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--ink-500);line-height:1;flex:none;}
.faq-item summary:hover{background:var(--bg);}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";color:var(--brand);}
.faq-body{padding:0 0 22px;}
.faq-body p{font-size:16px;line-height:1.85;color:var(--ink-700);}

/* ---------- 开通会员 CTA ---------- */
.cta-section{position:relative;overflow:hidden;background:var(--ink-block);color:#fff;padding:120px 0;}
.cta-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.14;}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.cta-left h2{color:#fff;font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.cta-left p{margin-top:16px;font-size:16px;line-height:1.85;color:#A9AFB5;max-width:560px;}
.cta-list{margin-top:28px;display:grid;gap:12px;}
.cta-list li{display:flex;align-items:center;gap:10px;font-size:15px;color:#D7DBDF;}
.cta-list li::before{
  content:"✓";flex:none;width:20px;height:20px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(185,230,76,.16);color:var(--accent);font-size:12px;
}
.price-card{background:#fff;color:var(--ink-900);border-radius:var(--r-lg);padding:32px;}
.price-card .price-label{font-size:13px;letter-spacing:.06em;color:var(--ink-500);}
.price-num{margin-top:10px;font-size:44px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:var(--ink-900);}
.price-num small{font-size:15px;font-weight:500;color:var(--ink-500);margin-left:8px;}
.price-list{margin-top:22px;display:grid;gap:10px;}
.price-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-700);}
.price-list li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;background:var(--brand);}
.price-card .btn{margin-top:24px;}
.price-note{margin-top:12px;text-align:center;font-size:13px;color:var(--ink-500);}
.price-note a{color:var(--brand);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:320px;color:#9AA0A6;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:#9AA0A6;padding:6px 0;transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:#7B8187;
}
.footer-bottom a{color:#7B8187;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 断点 ---------- */
@media (max-width:1200px){
  .container{max-width:1104px;}
  .content-grid{grid-template-columns:repeat(2,1fr);}
  .cat-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1024px){
  :root{--section-y:76px;}
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{gap:16px;}
  .nav-actions{margin-left:auto;}
  .hero-inner{min-height:auto;grid-template-columns:1fr;gap:40px;padding-top:48px;padding-bottom:56px;}
  .hero-sub{max-width:none;}
  .hero-visual img{aspect-ratio:16/10;}
  .level-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .news-card--lead{grid-row:auto;grid-column:span 2;}
  .cta-inner{grid-template-columns:1fr;gap:40px;}
  .cta-section{padding:80px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--section-y:64px;}
  body{font-size:16px;}
  .brand-text{font-size:16px;}
  .hero-stats{flex-wrap:wrap;gap:20px 0;}
  .hero-stats li{padding:0 20px;}
  .hero-stats strong{font-size:26px;}
  .level-grid{grid-template-columns:1fr;}
  .content-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-column:auto;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .section-head--row{align-items:flex-start;}
  .faq-item summary{font-size:16px;}
  .cta-section{padding:64px 0;}
  .price-card{padding:24px;}
  .price-num{font-size:38px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:480px){
  .container{padding:0 18px;}
  .hero h1{font-size:clamp(28px,8vw,34px);}
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-stats{gap:16px 0;margin-top:32px;}
  .hero-stats li{padding:0 16px;}
  .cat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .compare-foot .btn{width:100%;justify-content:center;}
}

/* roulang page: article */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --ink-300:#9AA0A6;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04),0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:68px;
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{
  display:flex;align-items:center;gap:32px;
  height:var(--nav-h);
  transition:height 200ms var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:24px;height:24px;flex:none;border-radius:7px}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-0.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-right:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:16px;color:var(--ink-700);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-link.is-active::after{width:100%}
.header-tools{display:flex;align-items:center;gap:14px;flex:none}
.search-box{position:relative}
.search-box svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--ink-500);fill:none;stroke-width:1.8;
}
.search-box input{
  width:200px;height:40px;
  padding:0 14px 0 36px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--bg);color:var(--ink-900);font-size:14px;
  transition:width 220ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-box input::placeholder{color:var(--ink-300)}
.search-box input:focus{
  width:260px;outline:none;background:var(--surface);
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(218,75,44,.18);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-outline{background:transparent;border:1px solid var(--ink-900);color:var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);padding:0 4px;height:auto}
.btn-ghost svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform 200ms var(--ease)}
.btn-ghost:hover{color:var(--brand-dark)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);stroke-width:1.8;fill:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.42);
  opacity:0;visibility:hidden;z-index:140;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;
  background:var(--surface);z-index:150;
  transform:translateX(100%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-head .close-btn{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.drawer-head .close-btn svg{width:18px;height:18px;stroke:var(--ink-900);stroke-width:1.8;fill:none}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 0}
.drawer-nav a{display:flex;align-items:center;height:48px;padding:0 20px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--bg)}
.drawer-nav a:hover{color:var(--brand);background:var(--bg)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
.drawer-search{position:relative;margin-bottom:12px}
.drawer-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:var(--bg);font-size:15px}
.drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(218,75,44,.18)}

/* ============ 内页头图带 ============ */
.page-hero{
  position:relative;background:var(--ink-block);
  background-image:linear-gradient(90deg,rgba(20,23,26,.92) 0%,rgba(20,23,26,.72) 55%,rgba(20,23,26,.42) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  min-height:320px;display:flex;align-items:center;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:rgba(255,255,255,.10);
}
.page-hero .container{display:flex;align-items:center;justify-content:space-between;gap:40px;padding-top:64px;padding-bottom:64px}
.page-hero h1{color:#fff;font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1.16;letter-spacing:-0.02em;max-width:820px}
.page-hero p{color:rgba(255,255,255,.72);font-size:15px;max-width:260px;line-height:1.7}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--accent);margin-bottom:14px;text-transform:uppercase;
}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;letter-spacing:.04em;color:var(--ink-500)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb li[aria-current]{color:var(--ink-900);font-weight:600}

/* ============ 布局 ============ */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;
  padding:72px 0 96px;align-items:start;
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:28px;margin-bottom:36px}
.article-head h1{
  font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.22;
  letter-spacing:-0.02em;max-width:820px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;font-size:13px;letter-spacing:.06em;color:var(--ink-500)}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-300)}
.tag-chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);
  font-size:13px;letter-spacing:.04em;font-weight:600;
}
.lede{
  font-size:16px;color:var(--ink-500);line-height:1.85;
  padding-left:16px;border-left:3px solid var(--brand);margin-bottom:32px;
}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-700)}
.article-body>*+*{margin-top:1.4em}
.article-body h2{
  font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;
  margin-top:2em;padding-left:14px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--brand);border-radius:2px}
.article-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-top:1.8em}
.article-body p{margin:0}
.article-body ul,.article-body ol{margin-top:1.2em;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-top:.6em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.78em;width:8px;height:8px;background:var(--brand);border-radius:2px}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;color:var(--brand);font-weight:700;font-size:14px;
}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;background:var(--surface);
  border-left:3px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink-700);
}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:1.6em 0;object-fit:cover;width:100%}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;background:var(--surface)}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--brand-soft);color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(218,75,44,.35)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body strong{color:var(--ink-900)}
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 32px;text-align:center;max-width:760px;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:24px}

/* ============ 文章尾部 ============ */
.article-foot{max-width:760px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag-list a{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);font-size:13px;color:var(--ink-700);
}
.tag-list a:hover{border-color:var(--brand);color:var(--brand)}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:100px;display:flex;flex-direction:column;gap:24px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px}
.side-card h3{font-size:15px;font-weight:700;letter-spacing:.02em;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px}
.side-list li+li{border-top:1px solid var(--bg)}
.side-list a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 0;font-size:14px;color:var(--ink-700)}
.side-list a span{color:var(--ink-300);transition:transform 200ms var(--ease);flex:none}
.side-list a:hover{color:var(--brand)}
.side-list a:hover span{transform:translateX(3px)}
.side-note{background:var(--ink-block);border-color:var(--ink-block)}
.side-note h3{color:#fff}
.side-note h3::before{background:var(--accent)}
.side-note p{color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;margin-bottom:16px}

/* ============ 相关推荐 ============ */
.section{padding:96px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.25}
.section-head .rule{display:block;width:48px;height:1px;background:var(--line);margin-top:16px}
.section-head p{color:var(--ink-500);font-size:15px;max-width:420px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#DAD6CC}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-cat{font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--brand)}
.card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--brand)}
.card-desc{font-size:14px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--bg);font-size:13px;color:var(--ink-300);letter-spacing:.04em;
}
.card-foot svg{width:15px;height:15px;stroke:var(--ink-300);fill:none;stroke-width:2;transition:transform 200ms var(--ease),stroke 200ms var(--ease)}
.card:hover .card-foot svg{transform:translateX(3px);stroke:var(--brand)}

/* ============ 深色 CTA ============ */
.cta-band{background:var(--ink-block);color:#fff}
.cta-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  padding:96px 0;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.25;margin-bottom:16px}
.cta-band .lead{color:rgba(255,255,255,.68);font-size:16px;max-width:520px;margin-bottom:24px}
.cta-checks{display:flex;flex-direction:column;gap:12px}
.cta-checks li{display:flex;align-items:center;gap:10px;font-size:15px;color:rgba(255,255,255,.86)}
.cta-checks svg{width:16px;height:16px;stroke:var(--accent);fill:none;stroke-width:2.4;flex:none}
.price-card{background:var(--surface);border-radius:var(--r-lg);padding:28px;color:var(--ink-700)}
.price-card .price-label{font-size:13px;letter-spacing:.06em;color:var(--ink-500);margin-bottom:6px}
.price-card .price{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.price-card .price strong{font-size:44px;font-weight:800;color:var(--ink-900);letter-spacing:-0.02em;line-height:1}
.price-card .price span{color:var(--ink-500);font-size:14px}
.price-card .price-desc{font-size:14px;color:var(--ink-500);padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.price-card .note{font-size:13px;color:var(--ink-300);margin-top:12px;line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-block);color:rgba(255,255,255,.7);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:#9AA0A6;max-width:300px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#9AA0A6;padding:6px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:13px;color:#9AA0A6;letter-spacing:.03em;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:1ms!important;animation:none!important}
}

/* ============ 断点 ============ */
@media (max-width:1200px){
  .container{max-width:1104px}
  .main-nav{gap:24px}
  .search-box input{width:170px}
  .search-box input:focus{width:200px}
}
@media (max-width:1024px){
  .main-nav,.header-tools .search-box,.header-tools .btn-primary{display:none}
  .nav-toggle{display:flex}
  .layout{grid-template-columns:1fr;gap:0;padding:48px 0 72px}
  .sidebar{position:static;margin-top:48px}
  .page-hero .container{flex-direction:column;align-items:flex-start;gap:16px}
  .page-hero p{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:64px 0}
  .article-body{max-width:none}
  .section-head{flex-direction:column;align-items:flex-start}
  .page-hero{min-height:260px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand-text{font-size:16px}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .btn{width:100%}
  .header-tools .btn{width:auto}
  .empty-state{padding:40px 20px}
}

/* roulang page: category1 */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04),0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:40px}
.section-head .eyebrow{
  display:block;font-size:13px;letter-spacing:.06em;color:var(--brand);
  text-transform:uppercase;margin-bottom:10px;font-weight:600;
}
.section-head h2{
  font-size:clamp(26px,3.4vw,38px);line-height:1.25;font-weight:700;
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;width:3px;height:1.1em;background:var(--brand);border-radius:2px;
}
.section-head h2::after{
  content:"";display:block;width:48px;height:1px;background:var(--line);margin-top:18px;
}
.section-head p{margin-top:16px;max-width:720px;color:var(--ink-500);font-size:16px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:32px;height:68px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:24px;height:24px;flex:0 0 auto}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-right:auto}
.nav-link{
  position:relative;font-size:16px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width var(--dur) var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-link.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;width:200px;
  padding:0 12px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--bg);transition:width var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{width:260px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(218,75,44,.18);background:var(--surface)}
.search-box svg{width:16px;height:16px;color:var(--ink-500);flex:0 0 auto}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-700);
}
.search-box input::placeholder{color:var(--ink-500)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-text{padding:0;height:auto;color:var(--ink-900);font-weight:600;gap:6px}
.btn-text:hover{color:var(--brand)}
.btn-text .arrow{transition:transform var(--dur) var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill)}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;background:var(--surface);
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink-900);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink-900);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-overlay{
  position:fixed;inset:0;background:rgba(16,20,24,.42);opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);z-index:79;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* ============ 内页头图带 ============ */
.page-banner{
  position:relative;min-height:320px;display:flex;align-items:flex-end;
  background-image:linear-gradient(115deg,rgba(20,23,26,.94) 0%,rgba(20,23,26,.72) 52%,rgba(179,58,32,.62) 100%),
                   url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:1;padding-top:64px;padding-bottom:56px;width:100%}
.banner-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;
  color:#fff;background:rgba(218,75,44,.9);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:20px;
}
.banner-inner h1{
  color:#fff;font-size:clamp(30px,4.6vw,56px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  max-width:820px;
}
.banner-inner .lead{
  margin-top:18px;color:rgba(255,255,255,.82);font-size:16px;max-width:640px;
}

/* ============ 面包屑 ============ */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a:hover{color:var(--brand)}

/* ============ 分类说明 ============ */
.intro-strip{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 32px;margin-top:28px;
}
.intro-strip p{font-size:17px;color:var(--ink-700)}
.intro-strip .meta{
  margin-top:14px;font-size:13px;letter-spacing:.06em;color:var(--ink-500);
  display:flex;flex-wrap:wrap;gap:18px;
}

/* ============ 卡片栅格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D2C8}
.card-cover{
  position:relative;aspect-ratio:16/10;background:var(--bg);overflow:hidden;
}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 400ms var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:3px 10px;
}
.card-title{font-size:19px;font-weight:600;line-height:1.4;color:var(--ink-900)}
.card:hover .card-title{color:var(--brand)}
.card-desc{font-size:14px;color:var(--ink-500);line-height:1.75;flex:1}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:6px;padding-top:12px;
  font-size:13px;color:var(--ink-500);letter-spacing:.04em;
}

/* ============ 对比表 ============ */
.compare-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:660px}
table.compare caption{
  text-align:left;padding:20px 24px 0;font-size:14px;color:var(--ink-500);
}
table.compare th,table.compare td{
  padding:16px 24px;font-size:15px;text-align:left;border-bottom:1px solid var(--line);
}
table.compare thead th{
  font-size:14px;letter-spacing:.04em;color:var(--ink-900);font-weight:700;
  background:var(--bg);white-space:nowrap;
}
table.compare thead th.hl{
  color:var(--brand-dark);background:var(--brand-soft);position:relative;
}
table.compare thead th.hl::before{
  content:"常用方式";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand);
  font-size:0;overflow:hidden;
}
table.compare tbody th{
  font-weight:600;color:var(--ink-900);width:26%;background:var(--surface);
}
table.compare tbody tr:nth-child(even) td,
table.compare tbody tr:nth-child(even) th{background:var(--brand-soft)}
table.compare tbody tr:last-child td,
table.compare tbody tr:last-child th{border-bottom:0}
.mark-yes{display:inline-flex;align-items:center;gap:8px;color:var(--ink-900)}
.mark-yes::before{
  content:"";width:14px;height:14px;border-radius:50%;background:var(--brand);flex:0 0 auto;
}
.mark-no{display:inline-flex;align-items:center;gap:8px;color:var(--ink-500)}
.mark-no::before{
  content:"";width:12px;height:2px;background:var(--ink-500);flex:0 0 auto;
}
.compare-note{padding:16px 24px 20px;font-size:13px;color:var(--ink-500)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 20px;position:relative;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand)}
.step .idx{
  font-size:40px;font-weight:800;line-height:1;color:var(--line);
  font-variant-numeric:tabular-nums;display:block;margin-bottom:14px;
  transition:color var(--dur) var(--ease);
}
.step:hover .idx{color:var(--brand)}
.step h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step p{font-size:15px;color:var(--ink-500);line-height:1.8}

/* ============ FAQ ============ */
.faq{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 8px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:14px;height:14px;position:relative;
  transition:transform var(--dur) var(--ease);
  background:
    linear-gradient(var(--brand),var(--brand)) center/14px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 14px no-repeat;
}
.faq-item[open] summary::after{transform:rotate(90deg);background:linear-gradient(var(--brand),var(--brand)) center/14px 2px no-repeat}
.faq-item summary:hover{background:var(--bg);color:var(--brand)}
.faq-body{padding:0 8px 22px;font-size:16px;line-height:1.85;color:var(--ink-700);max-width:760px}

/* ============ 页尾 CTA ============ */
.cta-band{background:var(--ink-block);color:#fff;padding:120px 0}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,38px);line-height:1.25}
.cta-band .cta-lead{margin-top:16px;color:#9AA0A6;font-size:16px;max-width:520px}
.cta-list{margin-top:26px;display:grid;gap:12px}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#E7E5E0}
.cta-list li::before{
  content:"";flex:0 0 auto;margin-top:9px;width:8px;height:8px;background:var(--accent);border-radius:2px;
}
.price-card{
  background:var(--surface);border-radius:var(--r-lg);padding:32px;color:var(--ink-700);
  box-shadow:var(--shadow-hover);
}
.price-card .plan{
  display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--ink-900);
  background:var(--accent);border-radius:var(--r-pill);padding:4px 12px;font-weight:600;
}
.price-card .price{
  margin-top:18px;display:flex;align-items:baseline;gap:6px;color:var(--ink-900);
  font-variant-numeric:tabular-nums;
}
.price-card .price strong{font-size:44px;font-weight:800;line-height:1}
.price-card .price span{font-size:14px;color:var(--ink-500)}
.price-card .price-desc{margin-top:14px;font-size:14px;color:var(--ink-500)}
.price-card .btn{margin-top:22px}
.price-card .fine{margin-top:14px;font-size:13px;color:var(--ink-500);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;max-width:280px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#9AA0A6;padding:5px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{transition-duration:1ms !important}
}

/* ============ 断点 ============ */
@media (max-width:1200px){
  .container{max-width:1104px}
  .main-nav{gap:24px}
  .nav-link{font-size:15px}
}
@media (max-width:1024px){
  .main-nav{
    position:fixed;top:0;right:0;z-index:81;width:300px;height:100%;
    background:var(--surface);flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 24px;box-shadow:-16px 0 40px -20px rgba(16,20,24,.35);
    transform:translateX(102%);transition:transform 260ms var(--ease);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{font-size:16px;line-height:48px;padding:0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--brand)}
  .nav-toggle{display:inline-flex}
  .search-box{display:none}
  .header-actions .btn-primary{display:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .cta-band{padding:88px 0}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .header-inner{gap:16px;height:60px}
  .brand-text{font-size:16px}
  .page-banner{min-height:280px}
  .banner-inner{padding-top:48px;padding-bottom:40px}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .intro-strip{padding:22px 20px}
}
@media (max-width:520px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .banner-inner h1{font-size:28px}
  .card-title{font-size:18px}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .faq-item summary{font-size:16px}
  .price-card{padding:24px}
}

/* roulang page: category2 */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04),0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
  transition:height .2s var(--ease);
}
.site-header.is-stuck .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:24px;height:24px;flex-shrink:0;border-radius:7px}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:8px}
.nav-link{
  position:relative;
  font-size:16px;color:var(--ink-700);
  padding:22px 0;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:16px;height:2px;width:0;
  background:var(--brand);transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-link.is-active::after{width:100%}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:200px;padding:0 12px;
  background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r-pill);
  transition:width .24s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{
  width:260px;background:var(--surface);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(218,75,44,.18);
}
.search-box svg{width:16px;height:16px;flex-shrink:0;stroke:var(--ink-500)}
.search-box input{
  border:0;background:transparent;outline:none;
  width:100%;font-size:14px;color:var(--ink-900);
}
.search-box input::placeholder{color:var(--ink-500)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border-radius:10px;padding:0 22px;height:44px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn-primary{background:var(--brand);color:#fff;border-radius:var(--r-pill);height:40px;padding:0 20px;font-size:15px}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-solid:hover svg{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-text{
  height:auto;padding:0;background:none;color:var(--brand);
  font-size:15px;font-weight:600;border-radius:4px;
}
.btn-text svg{width:16px;height:16px}
.btn-text:hover{color:var(--brand-dark)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-block{width:100%}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);
}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;transition:background .2s var(--ease)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);
  transition:transform .2s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.42);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:var(--surface);z-index:80;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 24px 24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);font-size:20px;color:var(--ink-700);line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;flex:1}
.drawer-nav a{
  height:48px;display:flex;align-items:center;
  font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover{color:var(--brand);padding-left:6px}
.drawer-nav a.is-active{color:var(--ink-900);font-weight:600}
.drawer-foot{padding-top:16px}

/* ============ BANNER ============ */
.page-banner{
  position:relative;min-height:320px;
  display:flex;align-items:center;
  background-color:var(--ink-block);
  background-image:linear-gradient(100deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.80) 46%,rgba(218,75,44,.42) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:rgba(255,255,255,.14);
}
.banner-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:72px 0 68px;position:relative;z-index:2;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.62);margin-bottom:20px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(255,255,255,.34)}
.crumbs a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.crumbs a:hover{color:#fff}
.page-banner h1{
  color:#fff;font-size:clamp(30px,4.2vw,52px);font-weight:800;
  line-height:1.12;letter-spacing:-.02em;margin-bottom:18px;
}
.page-banner h1 em{font-style:normal;color:var(--accent)}
.banner-lead{color:rgba(255,255,255,.78);font-size:17px;max-width:34ch;line-height:1.8}
.banner-side{
  border-left:1px solid rgba(255,255,255,.16);
  padding-left:36px;
}
.banner-side .tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--accent);
  border:1px solid rgba(185,230,76,.42);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.banner-side p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.85}

/* ============ SECTIONS ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3vw,38px);letter-spacing:-.01em;position:relative;padding-left:18px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:24px;background:var(--brand);border-radius:2px;
}
.section-head .rule{width:48px;height:1px;background:var(--line);margin:20px 0 18px}
.section-head p{color:var(--ink-700);font-size:16px;max-width:68ch}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center h2{padding-left:0}
.section-head.center h2::before{display:none}
.section-head.center .rule{margin:20px auto 18px}

/* ============ CARD GRID ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D4CB}
.card-cover{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  background:var(--bg);
}
.card-cover img{
  width:100%;height:100%;object-fit:cover;
  border-bottom:1px solid var(--line);
  transition:transform .4s var(--ease);
}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.42;letter-spacing:-.01em}
.card-body p{font-size:15px;color:var(--ink-500);line-height:1.8}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.chip{
  display:inline-flex;align-items:center;
  font-size:13px;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:4px 12px;
}
.chip-plain{background:transparent;color:var(--ink-500);padding:0}
.card-link{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-900);transition:color .2s var(--ease)}
.card-link svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.card:hover .card-link{color:var(--brand)}
.card:hover .card-link svg{transform:translateX(4px)}

/* ============ STATS STRIP ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;
}
.stat-item{padding:32px 28px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:32px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-label{font-size:13px;letter-spacing:.06em;color:var(--ink-500);margin-top:8px}

/* ============ TIMELINE ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:59px;top:12px;bottom:12px;width:1px;background:var(--line);
}
.tl-item{position:relative;display:grid;grid-template-columns:120px 1fr;gap:0;align-items:flex-start;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-index{
  font-size:40px;font-weight:800;line-height:1;color:var(--line);
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
  position:relative;z-index:2;padding-top:4px;
  transition:color .2s var(--ease);
}
.tl-item:hover .tl-index{color:var(--brand)}
.tl-node{
  position:absolute;left:53px;top:16px;width:13px;height:13px;border-radius:50%;
  background:var(--surface);border:2px solid var(--line);z-index:3;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.tl-item:hover .tl-node{border-color:var(--brand)}
.tl-item.is-done .tl-node{background:var(--brand);border-color:var(--brand)}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.tl-item:hover .tl-card{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand)}
.tl-card h3{font-size:20px;margin-bottom:10px}
.tl-card p{font-size:15px;color:var(--ink-500);line-height:1.85}
.tl-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;letter-spacing:.06em;color:var(--ink-500);
}
.tl-meta span{display:inline-flex;align-items:center;gap:6px}
.tl-meta span::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}

/* ============ FAQ ============ */
.faq{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:12px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.faq-q:hover{background:var(--bg);padding-left:12px}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .24s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-700);left:50%;top:50%;
  transition:background .2s var(--ease);
}
.faq-icon::before{width:10px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:10px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(90deg);border-color:var(--brand);background:var(--brand-soft)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--brand)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:2px 4px 24px;font-size:16px;color:var(--ink-700);max-width:70ch}

/* ============ CTA BAND ============ */
.cta-band{
  background:var(--ink-block);color:#fff;padding:96px 0;
}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(26px,3vw,36px);letter-spacing:-.01em;margin-bottom:16px}
.cta-band .cta-desc{color:rgba(255,255,255,.72);font-size:16px;max-width:52ch;margin-bottom:28px}
.cta-checks{display:flex;flex-direction:column;gap:14px}
.cta-checks li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:rgba(255,255,255,.86)}
.cta-checks li::before{
  content:"";flex-shrink:0;width:18px;height:18px;border-radius:50%;
  background:var(--brand);margin-top:4px;
  background-image:linear-gradient(45deg,transparent 46%,#fff 46%,#fff 54%,transparent 54%);
}
.price-card{
  background:var(--surface);color:var(--ink-700);
  border-radius:var(--r-lg);padding:32px;
  box-shadow:var(--shadow-1);
}
.price-card .price-label{font-size:13px;letter-spacing:.06em;color:var(--ink-500)}
.price-row{display:flex;align-items:baseline;gap:8px;margin:10px 0 6px}
.price-num{font-size:44px;font-weight:800;color:var(--ink-900);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.price-unit{font-size:15px;color:var(--ink-500)}
.price-note{font-size:13px;color:var(--ink-500);line-height:1.7;margin-top:14px}
.price-list{border-top:1px solid var(--line);margin-top:20px;padding-top:18px;display:flex;flex-direction:column;gap:10px}
.price-list li{font-size:14px;color:var(--ink-700);display:flex;gap:10px;align-items:flex-start}
.price-list li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);flex-shrink:0;margin-top:9px}
.price-card .btn{margin-top:22px}

/* ============ FOOTER ============ */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;max-width:34ch}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col a{
  display:block;font-size:14px;color:#9AA0A6;padding:6px 0;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7C838A;
}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ RESPONSIVE ============ */
@media (max-width:1200px){
  .container{max-width:1104px}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .search-box{display:none}
  .burger{display:inline-flex}
  .header-tools .btn-primary{display:none}
  .banner-grid{grid-template-columns:1fr;gap:28px;padding:60px 0}
  .banner-side{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.16);padding-top:24px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .timeline::before{left:19px}
  .tl-item{grid-template-columns:1fr;padding-left:48px}
  .tl-index{font-size:28px;padding-top:0;margin-bottom:12px}
  .tl-node{left:13px;top:6px}
  .cta-band{padding:72px 0}
  .page-banner{min-height:280px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .card-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .btn{width:100%}
  .header-tools{gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .price-card{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04), 0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --sp-section:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{
  display:flex;align-items:center;gap:32px;
  height:68px;
  transition:height 200ms var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:24px;height:24px;border-radius:7px;flex:0 0 auto}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:8px}
.nav-link{
  position:relative;font-size:16px;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
  transition:color 200ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-link.is-active::after{width:100%}

.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;stroke:var(--ink-500);fill:none;stroke-width:1.8}
.search-box input{
  width:200px;height:40px;padding:0 14px 0 34px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:14px;color:var(--ink-900);
  transition:width 220ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease);
}
.search-box input::placeholder{color:var(--ink-500)}
.search-box input:focus{
  width:260px;outline:none;background:var(--surface);
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(218,75,44,.2);
}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:var(--r-sm);align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--ink-900);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink-900);
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

.mobile-drawer{
  position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100%;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform 260ms var(--ease);
  z-index:80;display:flex;flex-direction:column;padding:88px 0 0;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer a{
  display:flex;align-items:center;height:48px;padding:0 24px;
  font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.mobile-drawer a.is-active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto;padding:20px 24px}
.scrim{
  position:fixed;inset:0;background:rgba(16,20,24,.36);opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);z-index:70;
}
.scrim.is-open{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-outline{background:transparent;border:1px solid var(--ink-900);color:var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.btn-text .arrow{transition:transform 200ms var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-text:hover{color:var(--brand-dark)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  background:var(--brand-soft);color:var(--brand);
  border-radius:var(--r-pill);font-size:13px;letter-spacing:.04em;
}
.tag-accent{background:var(--accent);color:var(--ink-900);font-weight:700}
.small{font-size:13px;letter-spacing:.06em;color:var(--ink-500)}
.num{font-variant-numeric:tabular-nums}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;height:320px;overflow:hidden;
  background:var(--ink-block);
  display:flex;align-items:center;
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,23,26,.94) 0%,rgba(20,23,26,.72) 52%,rgba(20,23,26,.42) 100%);
}
.hero-inner{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:48px}
.hero-inner .eyebrow{
  font-size:13px;letter-spacing:.12em;color:var(--accent);margin-bottom:14px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4vw,46px);
  font-weight:800;line-height:1.16;letter-spacing:-.02em;
  max-width:760px;
}
.hero-note{
  flex:0 0 auto;max-width:260px;text-align:right;
  color:#C9CDD2;font-size:15px;line-height:1.7;
}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--ink-500)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--line)}
.breadcrumb a:hover{color:var(--brand)}

/* ---------- section ---------- */
.section{padding:var(--sp-section) 0 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  position:relative;font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.25;
  padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:24px;background:var(--brand);border-radius:2px;
}
.section-head h2::after{
  content:"";display:block;width:48px;height:1px;background:var(--line);margin-top:16px;
}
.section-head p{margin-top:14px;color:var(--ink-500);font-size:16px}

.intro-line{
  max-width:760px;font-size:17px;color:var(--ink-700);
  border-left:1px solid var(--line);padding-left:20px;
}

/* ---------- card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand)}
.card-media{aspect-ratio:16/10;background:var(--bg);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;box-shadow:inset 0 0 0 1px rgba(16,20,24,.06);transition:transform 400ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;font-weight:600;line-height:1.4}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-500)}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);
}
.lock{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;color:var(--ink-500);
}
.lock svg{width:12px;height:12px;stroke:var(--ink-500);fill:none;stroke-width:1.6}

/* ---------- zigzag ---------- */
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line)}
.zigzag:last-of-type{border-bottom:0}
.zigzag .zz-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/11;background:var(--bg)}
.zigzag .zz-media img{width:100%;height:100%;object-fit:cover;box-shadow:inset 0 0 0 1px rgba(16,20,24,.06)}
.zigzag .zz-media::after{
  content:"";position:absolute;inset:0;background:rgba(218,75,44,.08);
}
.zigzag.is-reverse .zz-media{order:2}
.zigzag.is-reverse .zz-text{order:1}
.zz-index{
  font-size:40px;font-weight:800;line-height:1;color:var(--line);
  font-variant-numeric:tabular-nums;transition:color 200ms var(--ease);
}
.zigzag:hover .zz-index{color:var(--brand)}
.zz-text h3{font-size:clamp(20px,2.2vw,24px);font-weight:700;margin:14px 0 12px;line-height:1.35}
.zz-text p{font-size:16px;color:var(--ink-700)}
.zz-list{margin-top:18px;display:grid;gap:10px}
.zz-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-700)}
.zz-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;background:var(--brand-soft);border:1px solid var(--brand);border-radius:2px;
}
.zz-text .btn-text{margin-top:20px}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:16px 12px 16px 0;
  font-size:17px;font-weight:600;color:var(--ink-900);
  cursor:pointer;list-style:none;transition:background 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--ink-500);line-height:1;
  transition:transform 200ms var(--ease),color 200ms var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--brand)}
.faq-item summary:hover{background:var(--bg)}
.faq-item .faq-body{padding:0 12px 22px 0;font-size:16px;line-height:1.85;color:var(--ink-700);max-width:720px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-block);color:#fff;margin-top:var(--sp-section);padding:96px 0}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.25}
.cta-band .cta-sub{margin-top:14px;color:#C9CDD2;font-size:16px;max-width:520px}
.cta-checks{margin-top:26px;display:grid;gap:12px}
.cta-checks li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#E8EAEC}
.cta-checks svg{flex:0 0 auto;width:16px;height:16px;margin-top:6px;stroke:var(--accent);fill:none;stroke-width:2.2}
.price-card{
  background:var(--surface);color:var(--ink-700);
  border-radius:var(--r-lg);padding:32px;
}
.price-card .plan{font-size:13px;letter-spacing:.1em;color:var(--ink-500)}
.price-card .price{
  margin:10px 0 4px;font-size:44px;font-weight:800;color:var(--ink-900);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.price-card .price span{font-size:16px;font-weight:500;color:var(--ink-500);margin-left:6px}
.price-card .price-note{font-size:14px;color:var(--ink-500);margin-bottom:22px}
.price-card .foot-note{margin-top:14px;font-size:13px;color:var(--ink-500);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 32px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{max-width:300px;font-size:14px;line-height:1.8;color:#9AA0A6}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;padding:5px 0;color:#9AA0A6;transition:color 200ms var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;
  font-size:13px;color:#818790;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{max-width:1104px}
  .main-nav{gap:24px}
}
@media (max-width:1024px){
  .main-nav,.search-box{display:none}
  .menu-toggle{display:inline-flex}
  .header-actions .btn-sm{display:none}
  .hero-inner{flex-direction:column;align-items:flex-start;gap:16px}
  .hero-note{text-align:left;max-width:520px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:64px}
  .page-hero{height:auto;padding:64px 0 56px}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .zigzag{grid-template-columns:1fr;gap:24px;padding:40px 0}
  .zigzag.is-reverse .zz-media{order:0}
  .zigzag.is-reverse .zz-text{order:0}
  .cta-band{padding:72px 0}
  .section{padding:var(--sp-section) 0 0}
}
@media (max-width:520px){
  body{font-size:16px}
  .container{padding:0 18px}
  .card-grid{grid-template-columns:1fr}
  .brand-text{font-size:16px}
  .btn{width:100%}
  .btn-text{width:auto}
  .header-actions{gap:10px}
  .price-card{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .page-hero h1{font-size:28px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04),0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1{font-size:clamp(32px,5vw,64px);font-weight:800;line-height:1.12;letter-spacing:-.02em;color:var(--ink-900);}
h2{font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink-900);}
h3{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink-900);}
small,.meta{font-size:13px;letter-spacing:.06em;color:var(--ink-500);}
.num{font-variant-numeric:tabular-nums;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),height .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:24px;
  transition:height .2s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:24px;height:24px;border-radius:7px;flex:0 0 auto;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:16px;}
.nav-link{
  position:relative;font-size:16px;color:var(--ink-700);padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-900);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;stroke:var(--ink-500);fill:none;stroke-width:1.8;}
.search-box input{
  width:200px;height:40px;padding:0 14px 0 34px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;font-size:14px;color:var(--ink-900);
  transition:width .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--ink-500);}
.search-box input:focus{outline:none;width:260px;border-color:var(--brand);box-shadow:0 0 0 2px rgba(218,75,44,.2);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:10px;
  font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-outline:hover{background:var(--ink-900);color:#fff;}
.btn-ghost{background:transparent;color:var(--brand);padding:0;height:auto;border:0;}
.btn-ghost .arrow{transition:transform .2s var(--ease);display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- page hero band ---------- */
.page-band{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  background:
    linear-gradient(100deg,rgba(20,23,26,.90) 0%,rgba(20,23,26,.76) 52%,rgba(218,75,44,.42) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 1px,transparent 1px 10px);
  pointer-events:none;
}
.band-inner{
  position:relative;z-index:2;width:100%;
  max-width:var(--container);margin:0 auto;padding:72px 24px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.page-band h1{color:#fff;font-size:clamp(30px,4.4vw,52px);max-width:760px;}
.page-band h1 .k{color:var(--accent);}
.band-note{font-size:15px;color:rgba(255,255,255,.78);max-width:220px;line-height:1.7;letter-spacing:.02em;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:820px;}
.section-head h2{display:flex;align-items:center;gap:14px;}
.section-head h2::before{content:"";width:3px;height:24px;background:var(--brand);border-radius:2px;flex:0 0 auto;}
.section-head .rule{display:block;width:48px;height:1px;background:var(--line);margin:16px 0 18px;}
.section-head p{color:var(--ink-700);}
.lead{font-size:18px;line-height:1.9;color:var(--ink-700);max-width:860px;}

/* ---------- card grid ---------- */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D4CB;}
.card-cover{position:relative;aspect-ratio:16/10;background:var(--bg);overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);font-size:13px;letter-spacing:.04em;font-weight:600;
}
.card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--ink-900);}
.card-desc{font-size:14px;line-height:1.75;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);letter-spacing:.04em;}
.badge-accent{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--ink-block);font-size:12px;font-weight:700;letter-spacing:.04em;
}

/* ---------- numbered list ---------- */
.step-list{border-top:1px solid var(--line);}
.step-row{
  display:grid;grid-template-columns:96px minmax(0,1fr) 44px;align-items:center;gap:24px;
  padding:28px 16px;border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease),padding-left .2s var(--ease);
}
.step-row:hover{background:var(--brand-soft);padding-left:24px;}
.step-num{
  font-size:40px;font-weight:800;line-height:1;color:#C9C5BC;font-variant-numeric:tabular-nums;
  transition:color .2s var(--ease);
}
.step-row:hover .step-num{color:var(--brand);}
.step-body h3{margin-bottom:6px;}
.step-body p{font-size:15px;line-height:1.8;color:var(--ink-500);}
.step-arrow{font-size:20px;color:var(--ink-500);text-align:right;transition:transform .2s var(--ease),color .2s var(--ease);}
.step-row:hover .step-arrow{transform:translateX(4px);color:var(--brand);}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.stat-item{padding:28px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:32px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-label{font-size:13px;color:var(--ink-500);letter-spacing:.06em;margin-top:8px;}

/* ---------- FAQ ---------- */
.faq{max-width:820px;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-child{border-top:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:background-color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{background:var(--bg);}
.faq .sign{
  flex:0 0 auto;width:22px;height:22px;position:relative;border-radius:50%;border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq .sign::before,.faq .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-700);transform:translate(-50%,-50%);
}
.faq .sign::before{width:10px;height:1.5px;}
.faq .sign::after{width:1.5px;height:10px;transition:opacity .2s var(--ease);}
.faq details[open] .sign{transform:rotate(90deg);border-color:var(--brand);}
.faq details[open] .sign::after{opacity:0;}
.faq .answer{padding:0 4px 22px;font-size:16px;line-height:1.85;color:var(--ink-700);max-width:760px;}

/* ---------- dark CTA ---------- */
.dark-cta{background:var(--ink-block);color:#fff;padding:120px 0;}
.dark-cta .cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.dark-cta h2{color:#fff;}
.dark-cta p{color:#9AA0A6;margin-top:18px;max-width:560px;}
.checks{margin-top:28px;display:grid;gap:14px;}
.checks li{display:flex;gap:12px;align-items:flex-start;color:#D5D8DB;font-size:16px;}
.checks li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;border-radius:50%;background:var(--brand);margin-top:5px;
  background-image:linear-gradient(45deg,transparent 45%,#fff 45%,#fff 55%,transparent 55%),
                   linear-gradient(-45deg,transparent 45%,#fff 45%,#fff 55%,transparent 55%);
  background-size:9px 9px,9px 9px;background-position:5px 6px,7px 6px;background-repeat:no-repeat;
}
.price-card{background:#fff;color:var(--ink-900);border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow-1);}
.price-card .plan{font-size:13px;letter-spacing:.06em;color:var(--ink-500);}
.price-card .price{font-size:44px;font-weight:800;line-height:1.1;margin:10px 0 4px;font-variant-numeric:tabular-nums;}
.price-card .price small{font-size:15px;font-weight:500;color:var(--ink-500);letter-spacing:0;}
.price-card .note{font-size:13px;color:var(--ink-500);margin-top:14px;line-height:1.7;}
.price-card .btn{margin-top:22px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-500);letter-spacing:.04em;}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--line);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.site-footer .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#9AA0A6;max-width:280px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;font-size:14px;color:#9AA0A6;padding:6px 0;transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8288;letter-spacing:.03em;
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,20,24,.5);opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;width:300px;height:100%;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .25s var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.is-open{transform:translateX(0);}
.drawer .brand{margin-bottom:24px;}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{font-size:16px;line-height:48px;color:var(--ink-700);border-bottom:1px solid var(--line);}
.drawer nav a.is-active{color:var(--ink-900);font-weight:600;}
.drawer .btn{margin-top:auto;}
.drawer-close{
  position:absolute;top:18px;right:18px;width:36px;height:36px;border:1px solid var(--line);
  border-radius:10px;background:#fff;cursor:pointer;font-size:18px;line-height:1;color:var(--ink-700);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}

/* ---------- breakpoints ---------- */
@media (max-width:1200px){
  .container,.header-inner,.band-inner{max-width:1104px;}
}
@media (max-width:1024px){
  .main-nav,.search-box{display:none;}
  .menu-toggle{display:flex;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dark-cta .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .page-band{min-height:auto;}
  .band-inner{padding:56px 24px;flex-direction:column;align-items:flex-start;gap:20px;}
  .band-note{max-width:100%;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .step-row{grid-template-columns:64px minmax(0,1fr) 28px;gap:16px;padding:22px 12px;}
  .step-num{font-size:30px;}
  .dark-cta{padding:80px 0;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .container,.header-inner,.band-inner{padding-left:18px;padding-right:18px;}
  .grid-3{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
  .header-right .btn-primary{padding:0 16px;font-size:15px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .step-row{grid-template-columns:52px minmax(0,1fr);}
  .step-arrow{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .price-card{padding:26px;}
  .price-card .price{font-size:36px;}
  .btn{width:100%;}
  .btn-ghost{width:auto;}
  .header-right .btn{width:auto;}
}

/* roulang page: category5 */
:root{
  --ink-block:#14171A;
  --ink-900:#101418;
  --ink-700:#33383D;
  --ink-500:#6B7076;
  --line:#E4E1DA;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --brand:#DA4B2C;
  --brand-dark:#B33A20;
  --brand-soft:#FBE9E3;
  --accent:#B9E64C;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,24,.04),0 8px 24px -12px rgba(16,20,24,.10);
  --shadow-hover:0 12px 32px -14px rgba(16,20,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;}
h1{font-size:clamp(32px,4.4vw,54px);font-weight:800;line-height:1.12;letter-spacing:-.02em;}
h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.25;}
h3{font-size:19px;font-weight:600;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
  white-space:nowrap;
}
.btn svg{transition:transform 200ms var(--ease);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-primary:hover svg{transform:translateX(4px);}
.btn-secondary{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-secondary:hover{background:var(--ink-900);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink-900);padding:0 4px;height:auto;border-radius:0;font-weight:600;}
.btn-ghost:hover{color:var(--brand);}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);}
.btn-block{width:100%;}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:var(--r-pill);
}
.badge-accent{
  display:inline-flex;align-items:center;
  background:var(--accent);color:var(--ink-block);
  font-size:12px;font-weight:700;letter-spacing:.05em;
  padding:4px 10px;border-radius:var(--r-pill);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease),height 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:68px;
  transition:height 200ms var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:24px;height:24px;flex-shrink:0;border-radius:7px;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:16px;}
.nav-link{
  position:relative;
  font-size:16px;color:var(--ink-700);
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform 200ms var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink-900);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;
  transition:width 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-box:focus-within{width:260px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(218,75,44,.18);}
.search-box svg{flex-shrink:0;color:var(--ink-500);}
.search-box input{border:0;outline:none;background:transparent;width:100%;font-size:14px;}
.search-box input::placeholder{color:var(--ink-500);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;z-index:80;
  background:#fff;box-shadow:-12px 0 40px -20px rgba(16,20,24,.35);
  transform:translateX(105%);
  transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);font-size:18px;line-height:1;color:var(--ink-700);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  line-height:48px;font-size:16px;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}
.scrim{
  position:fixed;inset:0;background:rgba(16,20,24,.4);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.scrim.is-open{opacity:1;visibility:visible;}

/* ============ 内页头图带 ============ */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(20,23,26,.92) 0%,rgba(20,23,26,.72) 52%,rgba(218,75,44,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:rgba(255,255,255,.18);
}
.page-hero .container{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  padding-top:64px;padding-bottom:56px;
}
.page-hero h1{color:#fff;max-width:760px;}
.page-hero .hero-note{
  color:rgba(255,255,255,.78);font-size:15px;max-width:260px;
  padding-bottom:8px;border-left:2px solid var(--brand);padding-left:14px;
}
.crumb{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  font-size:13px;letter-spacing:.06em;color:var(--ink-500);
  margin-bottom:20px;
}
.crumb li{display:flex;align-items:center;gap:10px;}
.crumb li+li::before{content:"/";color:var(--line);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--ink-900);font-weight:600;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section.tight{padding:64px 0 96px;}
.section-head{max-width:820px;margin-bottom:40px;}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;width:3px;height:24px;background:var(--brand);border-radius:2px;
}
.section-head .rule{width:48px;height:1px;background:var(--line);margin:18px 0 14px;}
.section-head p{color:var(--ink-500);font-size:16px;max-width:720px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.intro-note{
  max-width:820px;font-size:17px;color:var(--ink-700);
  border-left:3px solid var(--brand);padding-left:20px;
}

/* ============ 卡片栅格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D2C8;}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--bg);
  box-shadow:inset 0 0 0 1px rgba(16,20,24,.05);
}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card-body h3{color:var(--brand);}
.card-body p{
  font-size:15px;color:var(--ink-500);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-500);letter-spacing:.04em;
}
.card-foot .label{color:var(--brand);font-weight:600;}
.arrow{display:inline-block;transition:transform 200ms var(--ease);}
.card:hover .arrow{transform:translateX(4px);color:var(--brand);}

/* ============ 折叠面板分组 ============ */
.acc-wrap{display:grid;gap:20px;}
.acc-group{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.acc-group-head{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,var(--brand-soft) 0%,transparent 62%);
}
.acc-group-head .idx{
  font-size:20px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.acc-group-head h3{font-size:19px;}
.acc-group-head span{margin-left:auto;font-size:13px;color:var(--ink-500);letter-spacing:.06em;}
.acc-item{border-bottom:1px solid var(--line);}
.acc-item:last-child{border-bottom:0;}
.acc-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:16px;
  min-height:64px;padding:14px 24px;
  font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background-color 200ms var(--ease),color 200ms var(--ease);
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-item summary:hover{background:var(--bg);}
.acc-item summary .plus{
  margin-left:auto;flex-shrink:0;
  width:22px;height:22px;position:relative;
  transition:transform 200ms var(--ease);
}
.acc-item summary .plus::before,
.acc-item summary .plus::after{
  content:"";position:absolute;background:var(--ink-500);border-radius:2px;
  transition:background-color 200ms var(--ease),opacity 200ms var(--ease);
}
.acc-item summary .plus::before{left:0;top:10px;width:22px;height:2px;}
.acc-item summary .plus::after{top:0;left:10px;width:2px;height:22px;}
.acc-item[open] summary{color:var(--brand);}
.acc-item[open] summary .plus{transform:rotate(90deg);}
.acc-item[open] summary .plus::before,
.acc-item[open] summary .plus::after{background:var(--brand);}
.acc-item[open] summary .plus::after{opacity:0;}
.acc-body{padding:0 24px 22px;font-size:16px;line-height:1.85;color:var(--ink-700);max-width:880px;}
.acc-body strong{color:var(--ink-900);font-weight:600;}

/* ============ 指标数据块 ============ */
.stats-band{
  background:var(--ink-block);
  border-radius:var(--r-lg);
  padding:48px 40px;
  color:#fff;
}
.stats-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.stats-band .lead{color:rgba(255,255,255,.62);font-size:15px;max-width:620px;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:36px;padding-top:32px;border-top:1px solid rgba(255,255,255,.14);
}
.stat-item .v{
  font-size:36px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.stat-item .k{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.6);margin-top:8px;}
.stat-item .d{font-size:14px;color:rgba(255,255,255,.78);margin-top:10px;line-height:1.7;}

/* ============ 深色 CTA 条 ============ */
.cta-band{
  background:var(--ink-block);
  color:#fff;
  padding:120px 0;
}
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band .lead{color:rgba(255,255,255,.66);max-width:520px;}
.check-list{margin-top:28px;display:grid;gap:12px;}
.check-list li{
  display:flex;align-items:flex-start;gap:12px;
  font-size:15px;color:rgba(255,255,255,.86);
}
.check-list li::before{
  content:"";flex-shrink:0;margin-top:9px;
  width:16px;height:16px;border-radius:50%;
  background:var(--brand);
  background-image:linear-gradient(var(--brand),var(--brand));
  box-shadow:inset 0 0 0 4px rgba(255,255,255,.92);
}
.price-card{
  background:#fff;color:var(--ink-700);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-hover);
}
.price-card .plan{font-size:13px;letter-spacing:.06em;color:var(--ink-500);}
.price-card .amount{
  display:flex;align-items:baseline;gap:8px;margin:10px 0 4px;
}
.price-card .amount .cur{font-size:22px;font-weight:700;color:var(--ink-900);}
.price-card .amount .v{
  font-size:44px;font-weight:800;color:var(--ink-900);
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;line-height:1;
}
.price-card .amount .unit{font-size:14px;color:var(--ink-500);}
.price-card .desc{font-size:14px;color:var(--ink-500);margin-bottom:22px;}
.price-card .fine{font-size:13px;color:var(--ink-500);margin-top:14px;letter-spacing:.02em;}
.price-card .divider{height:1px;background:var(--line);margin:22px 0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-block);color:#9AA0A6;padding:72px 0 32px;font-size:14px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;max-width:280px;line-height:1.8;color:#9AA0A6;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;line-height:2.1;color:#9AA0A6;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:#7C8288;
}
.footer-bottom .num{font-variant-numeric:tabular-nums;}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ 断点 ============ */
@media (max-width:1200px){
  :root{--container:1104px;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .cta-band{padding:80px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .page-hero .container{flex-direction:column;align-items:flex-start;gap:20px;}
  .page-hero .hero-note{border-left:0;border-top:2px solid var(--brand);padding:12px 0 0;max-width:100%;}
  .card-grid{grid-template-columns:1fr;}
  .stats-band{padding:36px 24px;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .head-row{align-items:flex-start;flex-direction:column;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  h1{font-size:30px;}
  .stats-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .header-tools .btn-primary{display:none;}
  .section{padding:56px 0;}
  .cta-band{padding:64px 0;}
  .price-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .acc-item summary{padding:14px 18px;font-size:15px;}
  .acc-body{padding:0 18px 20px;}
  .acc-group-head{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}