/* roulang page: index */
:root{
  --ink:#0F1E1C;
  --ink-2:#2E3B39;
  --muted:#6B7A78;
  --primary:#14453C;
  --primary-deep:#0A2A24;
  --accent:#E08A3A;
  --accent-deep:#C46F22;
  --accent-soft:#F7E7D3;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:rgba(15,30,28,0.10);
  --line-strong:rgba(15,30,28,0.18);
  --shadow-s:0 1px 2px rgba(15,30,28,.05);
  --shadow-m:0 12px 32px -14px rgba(15,30,28,.18);
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
html img{max-width:100%;display:block;border:0;}
html a{color:inherit;text-decoration:none;}
html button,html input,html select,html textarea{font-family:inherit;font-size:inherit;color:inherit;}
html button{cursor:pointer;background:none;border:0;}
html ol,html ul{margin:0;padding:0;list-style:none;}
html h1,html h2,html h3,html h4,html p{margin:0;}
.num{font-variant-numeric:tabular-nums;font-family:'Inter','Manrope',system-ui,sans-serif;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}

.section{padding:48px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1280px){.section{padding:96px 0;}}

/* ---------- 倒计时条 ---------- */
.count-bar{background:var(--ink);color:#F2F0EC;}
.count-inner{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;min-height:56px;padding:10px 0;}
.count-badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:6px;background:rgba(224,138,58,.16);color:#F0B075;font-size:12px;letter-spacing:.02em;}
.count-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.count-label{font-size:14px;color:rgba(242,240,236,.82);}
.count-clock{display:flex;align-items:flex-end;gap:14px;margin-left:auto;}
.count-unit{display:flex;flex-direction:column;align-items:center;min-width:44px;}
.count-unit b{font-size:24px;line-height:1.1;color:var(--accent);font-weight:700;}
.count-unit span{font-size:12px;color:rgba(242,240,236,.6);}
.count-link{font-size:13px;color:var(--accent);border-bottom:1px solid rgba(224,138,58,.4);padding-bottom:2px;transition:color var(--dur) var(--ease);}
.count-link:hover{color:#F0B075;}
@media (max-width:639px){
  .count-inner{min-height:72px;}
  .count-clock{margin-left:0;width:100%;justify-content:space-between;}
  .count-label{width:100%;}
}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.site-header.scrolled{background:rgba(247,245,241,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;color:var(--ink);flex-shrink:0;}
.logo-mark{width:26px;height:26px;flex-shrink:0;transition:transform var(--dur) var(--ease);}
.logo-mark path,.logo-mark circle{transition:stroke var(--dur) var(--ease),fill var(--dur) var(--ease);}
.logo:hover .logo-mark{transform:rotate(-8deg);}
.logo:hover .logo-mark .cloud-gap{stroke:var(--accent);}
.main-nav{display:none;}
@media (min-width:1024px){.main-nav{display:block;}}
.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{position:relative;display:inline-block;font-size:14px;font-weight:500;color:var(--ink-2);padding:6px 0;transition:color var(--dur) var(--ease);}
.main-nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--primary);border-radius:2px;transition:left var(--dur) var(--ease),right var(--dur) var(--ease);}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{left:0;right:0;}
.main-nav a.active{color:var(--ink);font-weight:600;}
.main-nav a.active::after{left:0;right:0;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{display:none;align-items:center;gap:8px;height:38px;padding:0 10px 0 12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
@media (min-width:1024px){.cmd-search{display:flex;width:250px;}}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14);}
.cmd-search svg{width:15px;height:15px;stroke:var(--muted);flex-shrink:0;}
.cmd-search input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--ink);}
.cmd-search input::placeholder{color:var(--muted);}
.kbd{font-size:11px;color:var(--muted);background:rgba(15,30,28,.06);border-radius:5px;padding:1px 6px;letter-spacing:.02em;white-space:nowrap;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 18px;border-radius:var(--r-btn);font-size:14px;font-weight:600;border:1px solid transparent;transition:background 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(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(20,69,60,.06);}
.btn-lg{height:50px;padding:0 26px;font-size:15px;border-radius:12px;}
.btn-sm{height:38px;}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:color var(--dur) var(--ease);}
.link-more span{transition:transform var(--dur) var(--ease);}
.link-more:hover{color:var(--accent-deep);}
.link-more:hover span{transform:translateX(3px);}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{position:fixed;inset:0;z-index:70;background:var(--bg);transform:translateX(100%);transition:transform var(--dur) var(--ease);display:flex;flex-direction:column;padding:20px;}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;}
.drawer-close{width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;font-size:20px;line-height:1;color:var(--ink);}
.drawer nav ul{margin-top:12px;border-top:1px solid var(--line);}
.drawer nav li{border-bottom:1px solid var(--line);}
.drawer nav a{display:flex;align-items:center;height:52px;font-size:16px;color:var(--ink-2);}
.drawer nav a.active{color:var(--primary);font-weight:600;}
.drawer .drawer-cta{margin-top:auto;height:52px;width:100%;}

/* ---------- 通用标题 ---------- */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.sec-title{position:relative;font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.2;letter-spacing:-.01em;padding-left:0;}
.sec-title.anchor{padding-left:20px;}
.sec-title.anchor::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:28px;background:var(--accent);border-radius:2px;}
.sec-sub{margin-top:10px;font-size:15px;color:var(--muted);max-width:640px;line-height:1.8;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent-deep);background:var(--accent-soft);border-radius:6px;padding:3px 10px;height:24px;font-weight:600;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:40px 0 48px;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(20,69,60,.028) 0 1px,transparent 1px 14px);pointer-events:none;}
.hero-grid{position:relative;display:grid;gap:32px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center;}}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.12;letter-spacing:-.02em;}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.trust-item svg{width:16px;height:16px;stroke:var(--primary);}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--shadow-m);}
.hero-visual img{width:100%;height:100%;object-fit:cover;object-position:center 35%;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(45deg,rgba(10,42,36,.72) 0%,rgba(10,42,36,.22) 48%,rgba(10,42,36,0) 82%);}
.hero-card{position:absolute;left:20px;bottom:20px;right:20px;z-index:2;background:rgba(255,255,255,.94);border-radius:14px;padding:16px 18px;box-shadow:var(--shadow-s);}
.hero-card b{display:block;font-size:15px;color:var(--ink);}
.hero-card p{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- 卖点横向条目 ---------- */
.point-panel{display:grid;gap:32px;}
@media (min-width:1024px){.point-panel{grid-template-columns:5fr 7fr;gap:48px;align-items:start;}}
.point-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:8px 24px;box-shadow:var(--shadow-s);}
.point-row{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);}
.point-row:last-child{border-bottom:0;}
.point-idx{flex-shrink:0;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--primary);}
.point-row h3{font-size:20px;font-weight:600;line-height:1.45;}
.point-row p{margin-top:6px;font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.mini-note{margin-top:24px;padding:16px 18px;border-left:3px solid var(--accent);background:rgba(224,138,58,.07);border-radius:0 12px 12px 0;font-size:14px;color:var(--ink-2);}

/* ---------- 图墙 ---------- */
.gallery{display:grid;gap:16px;grid-template-columns:1fr;}
@media (min-width:640px){.gallery{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.gallery{grid-template-columns:repeat(4,1fr);grid-auto-rows:190px;}}
.g-item{position:relative;overflow:hidden;border-radius:var(--r-card);background:#E7E4DE;aspect-ratio:4/3;}
@media (min-width:1024px){.g-item{aspect-ratio:auto;height:100%;}}
.g-item.tall{aspect-ratio:3/4;}
@media (min-width:1024px){
  .g-item.tall{grid-row:span 2;aspect-ratio:auto;}
}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease);}
.g-item:hover img{transform:scale(1.03);}
.g-tag{position:absolute;left:14px;bottom:14px;font-size:12px;color:#fff;background:rgba(10,42,36,.62);backdrop-filter:blur(4px);border-radius:6px;padding:4px 10px;opacity:0;transform:translateY(6px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);}
.g-item:hover .g-tag{opacity:1;transform:translateY(0);}
.g-item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,42,36,0) 45%,rgba(10,42,36,.42) 100%);opacity:.85;}

/* ---------- 数据带 ---------- */
.stat-band{display:grid;gap:16px;grid-template-columns:repeat(2,1fr);}
@media (min-width:1024px){.stat-band{grid-template-columns:repeat(4,1fr);}}
.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 20px;box-shadow:var(--shadow-s);transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.stat-card b{display:block;font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--primary);letter-spacing:-.02em;line-height:1.2;}
.stat-card span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-s);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.card-cover{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#E7E4DE;}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease);}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px;}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;font-size:12px;font-weight:600;width:fit-content;}
.badge-cat{background:var(--accent-soft);color:#8A4E14;}
.badge-state{background:rgba(20,69,60,.08);color:var(--primary);}
.card-title{margin-top:12px;font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-title a{transition:color var(--dur) var(--ease);}
.card-title a:hover{color:var(--primary);}
.card-text{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.news-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 24px;background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-card);text-align:center;}
.news-empty p{font-size:15px;color:var(--muted);}
.news-empty svg{width:44px;height:44px;stroke:var(--line-strong);}

/* ---------- 深色 CTA ---------- */
.cta-section{background:var(--primary-deep);color:#F2F0EC;border-radius:var(--r-lg);overflow:hidden;}
.cta-grid{display:grid;gap:32px;padding:44px 24px;}
@media (min-width:768px){.cta-grid{padding:64px 48px;}}
@media (min-width:1024px){.cta-grid{grid-template-columns:6fr 6fr;gap:56px;align-items:start;}}
.cta-section h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.22;letter-spacing:-.01em;}
.cta-list{margin-top:24px;display:grid;gap:12px;}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(242,240,236,.86);}
.cta-list svg{width:18px;height:18px;stroke:var(--accent);flex-shrink:0;margin-top:5px;}
.cta-note{margin-top:24px;font-size:13px;color:rgba(242,240,236,.55);}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-m);}
.form-grid{display:grid;gap:16px;}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}.form-grid .full{grid-column:1/-1;}}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}
.field .req{color:var(--accent);}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;outline:0;font-size:14px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.field textarea{height:auto;min-height:88px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.12);}
.field.error input,.field.error select{border-color:#B4453A;}
.form-msg{margin-top:14px;font-size:13.5px;display:none;}
.form-msg.ok{display:block;color:var(--primary);background:rgba(20,69,60,.07);border-radius:var(--r-btn);padding:10px 14px;}
.form-msg.err{display:block;color:#B4453A;}
.form-privacy{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:64px;padding:16px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);transition:background var(--dur) var(--ease);}
.faq-q:hover{background:rgba(20,69,60,.04);}
.faq-icon{position:relative;flex-shrink:0;width:16px;height:16px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform var(--dur) var(--ease);}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:rotate(45deg);}
.faq-item.open .faq-icon::before{transform:rotate(45deg);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--dur) var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.faq-extra{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);}
@media (max-width:639px){
  .faq-q{font-size:15px;padding:14px 16px;}
  .faq-a p{padding:0 16px 18px;}
}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--muted);padding-top:24px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumb li::after{content:"/";margin-left:6px;color:var(--line-strong);}
.crumb li:last-child::after{display:none;}
.crumb li[aria-current]{color:var(--ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(242,240,236,.8);margin-top:72px;}
.footer-grid{display:grid;gap:32px;padding:56px 0 40px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#F7F5F1;}
.footer-about{margin-top:14px;font-size:13.5px;color:rgba(242,240,236,.6);line-height:1.9;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:#F7F5F1;margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:13px;color:rgba(242,240,236,.6);transition:color var(--dur) var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(242,240,236,.5);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .card:hover,.stat-card:hover,.btn:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0F1E1C;
  --ink-2:#2E3B39;
  --muted:#6B7A78;
  --primary:#14453C;
  --primary-deep:#0A2A24;
  --accent:#E08A3A;
  --accent-hover:#C46F22;
  --accent-soft:#F7E7D3;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:rgba(15,30,28,0.10);
  --line-strong:rgba(15,30,28,0.18);
  --radius-s:6px;
  --radius:16px;
  --radius-lg:24px;
  --radius-btn:10px;
  --shadow-s:0 1px 2px rgba(15,30,28,.05);
  --shadow-m:0 12px 32px -14px rgba(15,30,28,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:240ms cubic-bezier(.22,.61,.36,1);
  --font-cn:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-num:'Inter','Manrope',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent-soft);color:var(--ink);}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;left:0;right:0;z-index:60;
  background:transparent;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo-mark{width:26px;height:26px;flex:0 0 auto;transition:transform var(--t);}
.logo-mark .cloud-gap{stroke:var(--ink);transition:stroke var(--t);}
.logo:hover .logo-mark{transform:translateY(-1px);}
.logo:hover .logo-mark .cloud-gap{stroke:var(--accent);}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{flex:1 1 auto;}
.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;font-weight:500;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--ink);transition:left var(--t),right var(--t);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{left:0;right:0;}
.main-nav a.active{color:var(--ink);}
.main-nav a.active::after{left:0;right:0;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  height:38px;width:250px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color var(--t),box-shadow var(--t);
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14);}
.cmd-search svg{width:16px;height:16px;flex:0 0 auto;stroke:var(--muted);fill:none;stroke-width:2;}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:13.5px;
}
.cmd-search input::placeholder{color:var(--muted);}
.kbd{
  font-family:var(--font-num);font-size:11px;color:var(--muted);
  background:rgba(15,30,28,.05);border-radius:var(--radius-s);padding:2px 6px;
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform var(--t);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-open .nav-toggle span{background:transparent;}
.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(20,69,60,.06);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14.5px;font-weight:600;min-height:44px;
}
.btn-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--t);}
.btn-link:hover{color:var(--accent);}
.btn-link:hover svg{transform:translateX(2px);}

/* ============ badges / tags ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;
  border-radius:var(--radius-s);font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-accent{background:var(--accent-soft);color:#8F4E10;}
.badge-primary{background:rgba(20,69,60,.08);color:var(--primary);}
.badge-solid{background:var(--accent);color:#fff;}

/* ============ breadcrumb ============ */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line-strong);}
.crumb a:hover{color:var(--primary);}
.crumb .current{color:var(--ink-2);}

/* ============ page head ============ */
.page-head{padding:28px 0 40px;}
.page-head-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:1024px){.page-head-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:end;}}
.page-head h1{
  font-size:clamp(30px,4.6vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.14;
}
.page-head h1 em{font-style:normal;color:var(--primary);}
.page-head .lead{font-size:16.5px;color:var(--ink-2);margin:14px 0 0;}
.head-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.head-note{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0;}

/* ============ banner ============ */
.banner{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  min-height:280px;display:flex;align-items:flex-end;
  box-shadow:var(--shadow-m);
}
.banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 35%;}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,42,36,.86) 0%,rgba(10,42,36,.55) 48%,rgba(10,42,36,.28) 100%);
}
.banner-inner{position:relative;z-index:2;padding:36px 26px;color:#fff;width:100%;}
@media(min-width:768px){.banner-inner{padding:44px 44px;}}
.banner h2{font-size:clamp(21px,2.6vw,30px);font-weight:700;line-height:1.3;max-width:22em;}
.banner p{margin:12px 0 0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.82);max-width:40em;}
.banner-meta{display:flex;flex-wrap:wrap;gap:20px 32px;margin-top:22px;}
.banner-meta div{color:#fff;}
.banner-meta strong{display:block;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;}
.banner-meta span{font-size:12.5px;color:rgba(255,255,255,.72);}

/* ============ section ============ */
.section{padding:64px 0;}
@media(min-width:1280px){.section{padding:80px 0;}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.sec-head h2{font-size:clamp(23px,3vw,34px);font-weight:700;letter-spacing:-.015em;position:relative;padding-left:16px;}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:28px;background:var(--accent);border-radius:2px;
}
.sec-head .sub{margin:10px 0 0;font-size:15px;color:var(--muted);max-width:46em;}

/* ============ topic flow ============ */
.flow{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 28px;}}
.topic{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-s);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.topic:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong);}
.topic-media{
  border-radius:12px;overflow:hidden;position:relative;
  aspect-ratio:16/10;background:rgba(15,30,28,.05);margin-bottom:16px;
}
.topic.tall .topic-media{aspect-ratio:4/3;}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.topic:hover .topic-media img{transform:scale(1.03);}
.topic-tag{
  position:absolute;left:12px;bottom:12px;
  background:rgba(10,42,36,.78);color:#fff;font-size:12px;font-weight:600;
  padding:4px 9px;border-radius:var(--radius-s);backdrop-filter:blur(4px);
}
.topic h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.topic p{font-size:15px;color:var(--ink-2);line-height:1.8;margin:0 0 14px;}
.topic-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.topic-foot time{font-family:var(--font-num);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}

/* ============ stats ============ */
.stats-band{background:rgba(20,69,60,.04);border-radius:var(--radius-lg);padding:28px 20px;}
@media(min-width:768px){.stats-band{padding:36px 40px;}}
.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px;}
@media(min-width:900px){.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{border-left:1px solid var(--line-strong);padding-left:16px;}
.stat strong{display:block;font-family:var(--font-num);font-size:clamp(26px,3.4vw,36px);font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.7;}

/* ============ stage scroller ============ */
.scroller{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 18px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.scroller::-webkit-scrollbar{height:6px;}
.scroller::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px;}
.stage{
  flex:0 0 260px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow-s);
  transition:transform var(--t),box-shadow var(--t);
}
.stage:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.stage-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  border:1.5px solid var(--primary);color:var(--primary);
  font-family:var(--font-num);font-size:14px;font-weight:700;margin-bottom:14px;
}
.stage h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.stage p{font-size:14px;color:var(--muted);margin:0;line-height:1.8;}

/* ============ faq ============ */
.faq-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;box-shadow:var(--shadow-s);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(20,69,60,.04);}
.faq-icon{
  position:relative;flex:0 0 auto;width:18px;height:18px;transition:transform var(--t);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.faq-body p{margin:0;}

/* ============ cta ============ */
.cta-band{
  background:var(--primary-deep);color:#F7F5F1;border-radius:var(--radius-lg);
  padding:40px 24px;overflow:hidden;position:relative;
}
@media(min-width:768px){.cta-band{padding:56px 48px;}}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,138,58,.22),transparent 70%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr;gap:26px;}
@media(min-width:1024px){.cta-grid{grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:48px;align-items:center;}}
.cta-band h2{font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.28;color:#fff;}
.cta-band p{margin:14px 0 0;font-size:15px;color:rgba(247,245,241,.78);line-height:1.85;max-width:36em;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-points span{
  font-size:13.5px;color:rgba(247,245,241,.9);
  border:1px solid rgba(247,245,241,.24);border-radius:999px;padding:6px 14px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn-ghost{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.32);}
.cta-actions .btn-ghost:hover{background:rgba(247,245,241,.1);border-color:rgba(247,245,241,.5);}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#F7F5F1;margin-top:72px;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr 1fr;gap:48px;}}
.footer-logo{display:inline-flex;align-items:center;gap:9px;font-size:16.5px;font-weight:700;color:#F7F5F1;margin-bottom:14px;}
.footer-logo .logo-mark{width:26px;height:26px;}
.footer-about{font-size:13.5px;color:rgba(247,245,241,.62);line-height:1.85;margin:0;max-width:30em;}
.footer-title{font-size:14px;font-weight:600;color:#F7F5F1;margin-bottom:14px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{font-size:13.5px;color:rgba(247,245,241,.62);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(247,245,241,.5);
}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 560ms var(--ease),transform 560ms var(--ease);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .topic:hover,.stage:hover,.btn:hover{transform:none;}
  .topic:hover .topic-media img{transform:none;}
}

/* ============ mobile nav ============ */
@media(max-width:1023px){
  .nav-toggle{display:flex;}
  .main-nav{
    display:none;position:fixed;left:0;right:0;top:72px;bottom:0;
    background:var(--bg);z-index:70;padding:20px 20px 96px;overflow-y:auto;
  }
  .nav-open .main-nav{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .main-nav a{
    display:flex;align-items:center;min-height:48px;
    font-size:16px;font-weight:500;border-bottom:1px solid var(--line);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--primary);font-weight:600;}
  .cmd-search{display:none;}
  .nav-right .btn-primary{display:none;}
  .nav-open .nav-right .btn-primary{
    display:flex;position:fixed;left:20px;right:20px;bottom:20px;height:52px;
    justify-content:center;z-index:80;box-shadow:var(--shadow-m);
  }
  .nav-open{overflow:hidden;}
  body.nav-open{overflow:hidden;}
}
@media(max-width:639px){
  body{font-size:16px;}
  .section{padding:48px 0;}
  .banner{min-height:240px;}
  .faq-item summary{font-size:15px;padding:14px 18px;}
  .faq-body{padding:0 18px 18px;}
  .stats-band{padding:24px 18px;}
  .cta-band{padding:32px 20px;}
}

/* roulang page: article */
:root{
  --ink:#0F1E1C;
  --ink-2:#2E3B39;
  --muted:#6B7A78;
  --primary:#14453C;
  --primary-deep:#0A2A24;
  --accent:#E08A3A;
  --accent-deep:#C46F22;
  --accent-soft:#F7E7D3;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:rgba(15,30,28,.10);
  --line-strong:rgba(15,30,28,.18);
  --shadow-s:0 1px 2px rgba(15,30,28,.05);
  --shadow-m:0 12px 32px -14px rgba(15,30,28,.18);
  --r-card:16px;
  --r-block:24px;
  --r-btn:10px;
  --r-badge:6px;
  --ease:240ms cubic-bezier(.22,.61,.36,1);
  --font-cn:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-num:'Inter','Manrope',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);margin:0}
p{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.tnum{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:50}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:transparent;border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease);
}
.site-header.scrolled::before{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-wrap{position:relative;z-index:45;display:flex;align-items:center;gap:24px;height:76px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.logo-mark{width:26px;height:26px;flex:none;transition:transform var(--ease)}
.logo:hover .logo-mark{transform:rotate(-8deg)}
.logo:hover .cloud-gap{stroke:var(--accent)}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0}
.main-nav a{position:relative;display:inline-block;padding:8px 0;font-size:14px;font-weight:500;color:var(--ink-2);transition:color var(--ease)}
.main-nav a::after{content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;background:var(--ink);transition:left var(--ease),right var(--ease)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a.active::after{left:0;right:0}
.main-nav a.active{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.main-nav + .nav-right{margin-left:0}
.cmd-search{display:flex;align-items:center;gap:8px;height:38px;padding:0 10px;background:var(--surface);border:1px solid var(--line);border-radius:10px;transition:border-color var(--ease),box-shadow var(--ease)}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14)}
.cmd-search svg{width:15px;height:15px;flex:none;stroke:var(--muted);fill:none;stroke-width:2}
.cmd-search input{width:168px;border:0;outline:0;background:transparent;font:inherit;font-size:13.5px;color:var(--ink)}
.cmd-search input::placeholder{color:var(--muted)}
.kbd{font-family:var(--font-num);font-size:11px;color:var(--muted);background:rgba(15,30,28,.05);border-radius:6px;padding:2px 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;font-size:14.5px;font-weight:600;cursor:pointer;transition:background var(--ease),border-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(20,69,60,.06)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14.5px}
.btn-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--ease)}
.btn-link:hover{color:var(--accent)}
.btn-link:hover svg{transform:translateX(2px)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--surface);position:relative;cursor:pointer}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:50%;width:16px;height:1.6px;background:var(--ink);transform:translateX(-50%);transition:transform var(--ease),opacity var(--ease)}
.nav-toggle span{top:50%;margin-top:-.8px}
.nav-toggle span::before{top:-5px;left:0;transform:none}
.nav-toggle span::after{top:5px;left:0;transform:none}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0}
.mobile-search{display:none}

/* ============ 面包屑 ============ */
.breadcrumb{padding:28px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--muted)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line-strong)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--ink-2)}

/* ============ 文章头部 ============ */
.article-head{padding:24px 0 0;max-width:900px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1}
.badge-cat{background:var(--accent-soft);color:#8A4E14}
.badge-state{background:rgba(20,69,60,.08);color:var(--primary)}
.article-title{
  margin:16px 0 0;
  font-size:clamp(28px,4.2vw,46px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted)}
.article-meta .sep{color:var(--line-strong)}
.article-cover{margin:32px 0 0;overflow:hidden;border-radius:var(--r-block);border:1px solid var(--line);background:var(--surface)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ 正文布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:40px 0 0}
.toc{display:none}
.article-body{width:100%;max-width:760px;font-size:16.5px}
.article-body h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.32;letter-spacing:-.01em;margin:48px 0 16px;padding-left:14px;border-left:3px solid var(--accent);scroll-margin-top:104px}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 12px;scroll-margin-top:104px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em}
.article-body li{margin:.4em 0}
.article-body blockquote{margin:24px 0;padding:16px 22px;background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{max-width:100%;height:auto;border-radius:12px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body thead th{background:rgba(20,69,60,.06);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(15,30,28,.02)}
.article-body code{font-family:var(--font-num);font-size:14px;background:rgba(15,30,28,.05);border-radius:6px;padding:2px 6px}
.article-body pre{background:var(--ink);color:#EDEAE4;border-radius:12px;padding:18px 20px;overflow:auto;font-size:14px;line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* 空态 */
.empty-state{padding:56px 28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);text-align:center}
.empty-state svg{width:72px;height:72px;margin:0 auto 18px;stroke:var(--muted);fill:none;stroke-width:1.4}
.empty-state h2{justify-content:center;font-size:22px;font-weight:700;margin:0 0 10px;padding:0;border:0}
.empty-state p{color:var(--muted);font-size:15px;margin:0 0 22px}

/* 文末 */
.article-foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-badge);background:rgba(20,69,60,.06);color:var(--primary);font-size:12.5px;font-weight:500}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:24px}

/* ============ 通用板块 ============ */
.section{padding:72px 0 0}
@media (min-width:1280px){.section{padding:96px 0 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{position:relative;font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.22;letter-spacing:-.01em;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:28px;background:var(--accent);border-radius:2px}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-s);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.card-thumb{position:relative;overflow:hidden;background:rgba(15,30,28,.04)}
.card-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--ink)}
.card-title a:hover{color:var(--primary)}
.card-text{margin:10px 0 0;font-size:14.5px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--muted)}
.card-foot .tnum{font-family:var(--font-num)}

/* FAQ */
.faq-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;transition:background var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(20,69,60,.04)}
.faq-item summary::after{content:"+";font-size:20px;font-weight:400;color:var(--accent);line-height:1;transition:transform var(--ease)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-panel{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.85}
.faq-panel p{margin:0 0 .8em}
.faq-panel p:last-child{margin-bottom:0}
.faq-note{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}

/* CTA 深色区 */
.cta-band{margin-top:72px;background:var(--primary-deep);border-radius:var(--r-block);padding:56px 32px;display:grid;gap:28px;align-items:center}
@media (min-width:900px){.cta-band{grid-template-columns:1.2fr .8fr;padding:64px 56px}}
.cta-band h2{color:#F7F5F1;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:14px;color:rgba(247,245,241,.72);font-size:15px;max-width:560px}
.cta-points{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px}
.cta-points li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(247,245,241,.82)}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-ghost{background:transparent;border-color:rgba(247,245,241,.28);color:#F7F5F1}
.cta-band .btn-ghost:hover{background:rgba(247,245,241,.10);border-color:rgba(247,245,241,.5)}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:var(--ink);color:#EDEAE4;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#F7F5F1;font-weight:700;font-size:16px}
.footer-logo .logo-mark{width:24px;height:24px}
.footer-about{margin:16px 0 0;max-width:300px;font-size:13.5px;line-height:1.8;color:rgba(247,245,241,.62)}
.footer-title{margin:0 0 14px;font-size:14px;font-weight:600;color:#F7F5F1}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:rgba(247,245,241,.62);transition:color var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12.5px;color:rgba(247,245,241,.5)}

/* 动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (min-width:1280px){
  .article-layout{grid-template-columns:200px minmax(0,760px);justify-content:center;gap:56px}
  .article-layout.no-toc{grid-template-columns:minmax(0,760px)}
  .toc{display:block;position:sticky;top:104px;align-self:start}
  .toc h2{font-size:13px;font-weight:600;color:var(--muted);margin:0 0 12px;padding:0;border:0}
  .toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
  .toc a{display:block;margin-left:-1px;padding:6px 0 6px 14px;font-size:13.5px;line-height:1.5;color:var(--ink-2);border-left:2px solid transparent}
  .toc a:hover{color:var(--primary);border-left-color:var(--accent)}
}
@media (max-width:1023px){
  .nav-wrap{gap:16px;height:68px}
  .main-nav{
    position:fixed;inset:0;z-index:40;display:flex;flex-direction:column;
    padding:132px 24px 132px;background:var(--bg);overflow-y:auto;
    transform:translateX(100%);transition:transform 280ms cubic-bezier(.22,.61,.36,1);
  }
  body.nav-open .main-nav{transform:translateX(0)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0}
  .main-nav ul li{border-bottom:1px solid var(--line)}
  .main-nav a{display:flex;align-items:center;min-height:48px;font-size:16px;padding:0}
  .main-nav a::after{display:none}
  .main-nav a.active{color:var(--primary)}
  body.nav-open{overflow:hidden}
  .cmd-search{display:none}
  .nav-right .btn-primary{display:none}
  body.nav-open .nav-right .btn-primary{
    display:inline-flex;position:fixed;left:20px;right:20px;bottom:24px;z-index:45;height:50px;font-size:15px;
  }
  .nav-toggle{display:block;margin-left:auto}
  .mobile-search{display:none}
  body.nav-open .mobile-search{
    display:flex;align-items:center;gap:8px;position:fixed;top:80px;left:20px;right:20px;z-index:45;
    height:44px;padding:0 12px;background:var(--surface);border:1px solid var(--line);border-radius:10px;
  }
  body.nav-open .mobile-search svg{width:16px;height:16px;flex:none;stroke:var(--muted);fill:none;stroke-width:2}
  body.nav-open .mobile-search input{width:100%;border:0;outline:0;background:transparent;font:inherit;font-size:15px;color:var(--ink)}
  .cta-band{margin-top:56px}
}
@media (max-width:639px){
  body{font-size:16px}
  .article-body{font-size:16px}
  .article-body h2{margin-top:36px}
  .breadcrumb{padding-top:20px}
  .section{padding:48px 0 0}
  .section-head{margin-bottom:24px}
  .faq-item summary{font-size:15px;padding:14px 18px}
  .faq-panel{padding:0 18px 18px}
  .cta-band{padding:40px 22px;border-radius:var(--r-card)}
  .footer-bottom{margin-top:32px}
}

/* roulang page: category2 */
:root{
  --ink:#0F1E1C;
  --ink-2:#2E3B39;
  --muted:#6B7A78;
  --primary:#14453C;
  --primary-deep:#0A2A24;
  --accent:#E08A3A;
  --accent-soft:#F7E7D3;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:rgba(15,30,28,0.10);
  --line-strong:rgba(15,30,28,0.18);
  --shadow-s:0 1px 2px rgba(15,30,28,.05);
  --shadow-m:0 12px 32px -14px rgba(15,30,28,.18);
  --r-card:16px;
  --r-block:24px;
  --r-btn:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:240ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
svg{display:block}
.num{font-family:'Inter','Manrope',system-ui,sans-serif;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{max-width:1200px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-s);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:9px;flex:none}
.logo-mark{width:24px;height:24px;flex:none}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.logo:hover .cloud-gap{stroke:var(--accent)}
.cloud-gap{transition:stroke var(--t)}
.main-nav{flex:1;display:flex;justify-content:center}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;font-weight:500;color:var(--ink-2);
  transition:color var(--t);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;
  transition:left var(--t),right var(--t);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,
.main-nav a.active::after{left:0;right:0}
.main-nav a.active{color:var(--ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  height:38px;width:236px;padding:0 10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--t),box-shadow var(--t);
}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14)}
.cmd-search svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:2;flex:none}
.cmd-search input{width:100%;border:0;outline:0;background:transparent;font-size:13px;color:var(--ink)}
.cmd-search input::placeholder{color:var(--muted)}
.kbd{
  flex:none;font-family:'Inter',system-ui,sans-serif;font-size:11px;line-height:1;
  color:var(--muted);background:rgba(15,30,28,.05);border-radius:5px;padding:4px 6px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#C46F22;transform:translateY(-1px)}
.btn-secondary{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-secondary:hover{border-color:var(--line-strong);background:rgba(20,69,60,.06)}
.btn-text{color:var(--primary);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;min-height:44px}
.btn-text svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--t)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover svg{transform:translateX(2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line);
  align-items:center;justify-content:center;position:relative;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:background var(--t)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  border-radius:2px;transition:transform var(--t);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:var(--bg);padding:12px 20px 24px;
  display:none;flex-direction:column;overflow-y:auto;
}
.mobile-drawer.open{display:flex}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;
  font-size:16px;font-weight:500;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--ink);font-weight:700}
.drawer-cta{margin-top:auto;width:100%}
body.drawer-open{overflow:hidden}

@media(max-width:1023px){
  .main-nav{display:none}
  .cmd-search{display:none}
  .nav-toggle{display:inline-flex}
}
@media(min-width:1024px){
  .mobile-drawer{display:none!important}
}
@media(max-width:639px){
  .nav-cta{display:none}
  .logo-text{font-size:15.5px}
}

/* ---------- Page top ---------- */
.page-top{padding:24px 0 8px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li:not(:last-child)::after{content:"/";color:var(--line-strong)}
.breadcrumb a{transition:color var(--t)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--ink-2)}
.cat-head{display:grid;gap:18px;padding:26px 0 0;align-items:end}
@media(min-width:900px){.cat-head{grid-template-columns:1.45fr 1fr;gap:40px}}
.cat-head h1{
  font-size:clamp(30px,4.6vw,48px);
  font-weight:800;letter-spacing:-.02em;line-height:1.14;margin:0;
}
.cat-head .lede{font-size:16px;color:var(--ink-2);line-height:1.85;margin:0}
@media(min-width:1024px){.cat-head .lede{font-size:16.5px;padding-bottom:6px}}

.data-strip{
  display:grid;grid-template-columns:1fr;gap:1px;
  margin-top:30px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
@media(min-width:768px){.data-strip{grid-template-columns:repeat(3,1fr)}}
.data-item{background:var(--surface);padding:20px 24px;display:flex;flex-direction:column;gap:4px}
.data-num{
  font-family:'Inter','Manrope',system-ui,sans-serif;
  font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--primary);letter-spacing:-.01em;
}
.data-label{font-size:13px;color:var(--muted)}

/* ---------- Sections ---------- */
.section{padding:52px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1280px){.section{padding:88px 0}}
.section-tight{padding:36px 0}
@media(min-width:768px){.section-tight{padding:48px 0}}

.section-head{max-width:720px;margin-bottom:28px}
.section-head h2{font-size:clamp(23px,3.2vw,34px);font-weight:700}
.section-head p{margin:12px 0 0;font-size:16px;color:var(--ink-2)}
.anchor-title{position:relative;padding-left:16px}
.anchor-title::before{
  content:"";position:absolute;left:0;top:.26em;
  width:3px;height:28px;background:var(--accent);border-radius:2px;
}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:6px;font-size:12px;font-weight:600;white-space:nowrap;
}
.badge-accent{background:var(--accent-soft);color:#8A4E12}
.badge-primary{background:rgba(20,69,60,.08);color:var(--primary)}

/* ---------- Split layout ---------- */
.split{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
@media(min-width:1024px){.split{grid-template-columns:minmax(0,1.75fr) minmax(0,1fr);gap:36px}}

.steps{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line-strong);
  font-family:'Inter','Manrope',system-ui,sans-serif;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;color:var(--primary);margin-bottom:14px;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0}

.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  padding:28px;box-shadow:var(--shadow-s);
}
@media(min-width:1024px){.side-card{position:sticky;top:96px}}
.side-card h3{font-size:20px;font-weight:700;margin:14px 0 14px}
.side-points{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.side-points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.side-points li::before{
  content:"";position:absolute;left:0;top:.6em;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.side-card .btn{width:100%}
.side-note{font-size:12.5px;color:var(--muted);margin:12px 0 0;line-height:1.7}

/* ---------- Note grid ---------- */
.note-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:768px){.note-grid{grid-template-columns:repeat(2,1fr)}}
.note-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.note-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.note-card .lead{display:block;font-size:17px;font-weight:700;margin-bottom:10px}
.note-card p{font-size:14.5px;color:var(--ink-2);line-height:1.82;margin:0}

/* ---------- Horizontal scroll slots ---------- */
.hscroll{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(264px,1fr);
  gap:18px;overflow-x:auto;padding-bottom:12px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.hscroll > *{scroll-snap-align:start}
@media(min-width:1024px){
  .hscroll{grid-auto-flow:row;grid-template-columns:repeat(3,1fr);overflow:visible;padding-bottom:0}
}
.slot-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform var(--t),box-shadow var(--t);
}
.slot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.slot-media{aspect-ratio:16/10;overflow:hidden;background:rgba(15,30,28,.06)}
.slot-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.slot-card:hover .slot-media img{transform:scale(1.03)}
.slot-body{padding:22px}
.slot-body h3{font-size:19px;font-weight:700;margin-bottom:6px}
.slot-body .slot-time{
  font-family:'Inter','Manrope',system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--primary);font-weight:600;margin-bottom:10px;display:block;
}
.slot-body p{font-size:14.5px;color:var(--ink-2);line-height:1.78;margin:0}

/* ---------- FAQ ---------- */
.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:none}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 24px;list-style:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background var(--t);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:rgba(20,69,60,.04)}
.faq .ind{position:relative;width:16px;height:16px;flex:none}
.faq .ind::before,.faq .ind::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.faq .ind::before{left:0;top:7px;width:16px;height:2px}
.faq .ind::after{left:7px;top:0;width:2px;height:16px}
.faq details[open] .ind::after{transform:rotate(90deg);opacity:0}
.faq .faq-body{padding:0 24px 22px;font-size:15px;color:var(--ink-2);line-height:1.85}
.faq .faq-body p{margin:0}

/* ---------- CTA band ---------- */
.cta-band{background:var(--primary-deep);color:#F2F5F3;padding:56px 0}
@media(min-width:768px){.cta-band{padding:80px 0}}
@media(min-width:1280px){.cta-band{padding:96px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:center}}
.cta-band h2{color:#F7F5F1;font-size:clamp(23px,3.2vw,34px);font-weight:800;margin:0}
.cta-band .cta-sub{margin:14px 0 0;font-size:15.5px;line-height:1.85;color:rgba(242,245,243,.74)}
.cta-list{display:flex;flex-direction:column;gap:12px;margin:24px 0 0}
.cta-list li{position:relative;padding-left:24px;font-size:15px;color:rgba(242,245,243,.84)}
.cta-list li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:12px;height:2px;background:var(--accent);border-radius:2px;
}
.cta-band .btn-text{color:#F0B37A}
.cta-band .btn-text:hover{color:#fff}

.form-card{
  background:var(--surface);border-radius:var(--r-block);padding:28px;
  color:var(--ink);box-shadow:0 24px 60px -30px rgba(0,0,0,.5);
}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:var(--muted);margin:0 0 20px}
.form-row{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.form-row{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;margin-bottom:16px}
.field label{font-size:13px;color:var(--muted);margin-bottom:6px}
.field .req{color:var(--accent);margin-left:3px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;font-size:14.5px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  outline:none;transition:border-color var(--t),box-shadow var(--t);
}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7A78' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;
}
.field input:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14)}
.field input.error{border-color:#B4453A}
.form-card .btn{width:100%}
.form-note{font-size:12.5px;color:var(--muted);margin:14px 0 0;line-height:1.7}
.form-msg{
  display:none;margin-top:14px;padding:12px 16px;border-radius:var(--r-btn);
  font-size:14px;background:rgba(20,69,60,.08);color:var(--primary);line-height:1.7;
}
.form-msg.show{display:block}
.form-msg.error{background:rgba(180,69,58,.10);color:#B4453A}

/* ---------- Bottom link ---------- */
.more-link-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px;padding:26px 0 0;border-top:1px solid var(--line);margin-top:44px;
}
.more-link-row .hint{font-size:14px;color:var(--muted);margin:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#E7EBE9;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}}
.footer-logo{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:800;color:#F7F5F1}
.footer-about{font-size:13px;line-height:1.85;color:rgba(231,235,233,.64);margin:14px 0 0;max-width:330px}
.footer-title{font-size:14px;font-weight:600;color:#F7F5F1;margin:0 0 14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:rgba(231,235,233,.64);transition:color var(--t)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;margin-top:46px;padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12.5px;color:rgba(231,235,233,.55);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .58s var(--ease),transform .58s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .step,.note-card,.slot-card,.btn{transition:none}
  .step:hover,.note-card:hover,.slot-card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0F1E1C;
  --ink-2:#2E3B39;
  --muted:#6B7A78;
  --primary:#14453C;
  --primary-deep:#0A2A24;
  --accent:#E08A3A;
  --accent-deep:#C46F22;
  --accent-soft:#F7E7D3;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:rgba(15,30,28,0.10);
  --line-strong:rgba(15,30,28,0.18);
  --shadow-s:0 1px 2px rgba(15,30,28,.05);
  --shadow-m:0 12px 32px -14px rgba(15,30,28,.18);
  --r-card:16px;
  --r-block:24px;
  --r-btn:10px;
  --r-badge:6px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:240ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site-body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.site-body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--t) var(--ease);}
a:hover{color:var(--accent);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.2;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-family:'Inter','Manrope',system-ui,-apple-system,sans-serif;font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:transparent;
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:inset 0 -1px 0 var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-0.01em;}
.logo-mark{width:26px;height:26px;flex:0 0 26px;}
.logo-mark .cloud-gap{transition:stroke var(--t) var(--ease);}
.logo:hover .cloud-gap{stroke:var(--accent);}
.logo:hover{color:var(--ink);}
.main-nav{display:flex;align-items:center;flex:1 1 auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav ul li a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:14px;font-weight:500;color:var(--ink-2);border-radius:8px;
}
.main-nav ul li a::after{
  content:'';position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:center;transition:transform var(--t) var(--ease);
}
.main-nav ul li a:hover{color:var(--ink);}
.main-nav ul li a:hover::after{transform:scaleX(1);}
.main-nav ul li a.active{color:var(--ink);font-weight:600;}
.main-nav ul li a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  height:38px;padding:0 10px 0 12px;min-width:248px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.cmd-search svg{width:16px;height:16px;stroke:var(--muted);fill:none;flex:0 0 16px;}
.cmd-search input{
  border:0;outline:0;background:transparent;width:100%;font-size:13.5px;color:var(--ink);
  font-family:inherit;
}
.cmd-search input::placeholder{color:var(--muted);}
.cmd-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(20,69,60,.14);}
.kbd{
  display:inline-flex;align-items:center;height:20px;padding:0 6px;border-radius:4px;
  background:rgba(15,30,28,.06);color:var(--muted);font-size:11px;
  font-family:'Inter',system-ui,sans-serif;
}
.nav-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;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background var(--t) var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:'';position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform var(--t) var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-active span{background:transparent;}
.nav-toggle.is-active span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-active span::after{transform:translateY(-6px) rotate(-45deg);}
.nav-extras{display:none;}

@media (max-width:1023px){
  .nav-wrap{height:62px;}
  .nav-right .cmd-search,.nav-right .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:62px;bottom:0;z-index:70;
    display:block;padding:20px;overflow-y:auto;
    background:var(--bg);border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t);
  }
  .main-nav.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto;}
  .main-nav ul{display:block;}
  .main-nav ul li a{
    display:flex;height:48px;padding:0 4px;font-size:16px;border-radius:0;
    border-bottom:1px solid var(--line);
  }
  .main-nav ul li a::after{left:0;right:auto;width:28px;bottom:0;}
  .nav-extras{display:block;margin-top:24px;}
  .nav-extras .cmd-search{width:100%;min-width:0;margin-bottom:16px;}
}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(20,69,60,.06);color:var(--ink);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
.link-arrow svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--t) var(--ease);}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover svg{transform:translateX(2px);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--accent-soft);color:#8A4E12;}
.badge-state{background:rgba(20,69,60,.08);color:var(--primary);}

/* ---------- layout helpers ---------- */
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
@media (max-width:639px){
  .section{padding:48px 0;}
  .section-tight{padding:36px 0;}
}
@media (min-width:1280px){
  .section{padding:96px 0;}
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;}
.sec-head p{margin:10px 0 0;color:var(--muted);font-size:15px;max-width:640px;}
.h2-mark{position:relative;padding-left:16px;}
.h2-mark::before{
  content:'';position:absolute;left:0;top:.22em;width:3px;height:28px;
  background:var(--accent);border-radius:2px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.lead{font-size:17px;color:var(--ink-2);}
.muted{color:var(--muted);}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:'/';color:var(--line-strong);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current="page"]{color:var(--ink-2);}

/* ---------- category hero ---------- */
.cat-hero{padding:36px 0 56px;}
.cat-hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:end;}
@media (min-width:1024px){.cat-hero-grid{grid-template-columns:1.5fr 1fr;gap:56px;}}
.cat-hero h1{font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-0.02em;line-height:1.12;}
.cat-hero .hero-desc{font-size:17px;color:var(--ink-2);margin:20px 0 0;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-side{
  border-left:1px solid var(--line);padding-left:28px;
}
@media (max-width:1023px){.hero-side{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:24px;}}
.hero-side dl{margin:0;display:grid;gap:16px;}
.hero-side dt{font-size:13px;color:var(--muted);margin-bottom:2px;}
.hero-side dd{margin:0;font-size:15px;font-weight:600;color:var(--ink);}

/* ---------- snapshot ---------- */
.snapshot{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  box-shadow:var(--shadow-s);overflow:hidden;
}
.snapshot-grid{display:grid;grid-template-columns:1fr;}
@media (min-width:640px){.snapshot-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.snapshot-grid{grid-template-columns:repeat(4,1fr);}}
.snap-item{padding:26px 24px;border-top:1px solid var(--line);}
.snap-item:first-child{border-top:0;}
@media (min-width:640px){
  .snap-item:nth-child(odd){border-right:1px solid var(--line);}
  .snap-item:nth-child(2){border-top:0;}
}
@media (min-width:1024px){
  .snap-item{border-top:0;border-right:1px solid var(--line);}
  .snap-item:nth-child(odd){border-right:1px solid var(--line);}
  .snap-item:last-child{border-right:0;}
}
.snap-num{font-size:30px;font-weight:800;color:var(--primary);letter-spacing:-0.02em;}
.snap-label{font-size:14px;font-weight:600;margin-top:6px;}
.snap-desc{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.7;}

/* ---------- scope / image text ---------- */
.scope-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){.scope-grid{grid-template-columns:1fr 1fr;gap:56px;}}
.media-frame{
  border-radius:var(--r-block);overflow:hidden;position:relative;
  aspect-ratio:4/3;background:var(--primary-deep);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.media-frame:hover img{transform:scale(1.03);}
.media-frame::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(10,42,36,.55),rgba(10,42,36,.05) 62%);
}
.media-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  color:#fff;font-size:13px;font-weight:600;
  background:rgba(10,42,36,.55);border:1px solid rgba(255,255,255,.22);
  padding:6px 12px;border-radius:999px;
}
.scope-list{margin-top:24px;border-top:1px solid var(--line);}
.scope-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);
}
.scope-list li strong{color:var(--ink);font-weight:600;flex:0 0 auto;}
.scope-list li span{color:var(--muted);}

/* ---------- rule points ---------- */
.rule-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  box-shadow:var(--shadow-s);padding:8px 0;
}
.rule-item{display:flex;gap:20px;padding:24px 28px;border-top:1px solid var(--line);}
.rule-item:first-child{border-top:0;}
@media (max-width:639px){.rule-item{padding:20px 20px;gap:14px;}}
.rule-index{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.rule-body h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.rule-body p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ---------- rules layout with aside ---------- */
.rules-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){.rules-layout{grid-template-columns:2fr 1fr;gap:44px;align-items:start;}}
.side-col{display:grid;gap:20px;}
@media (min-width:1024px){.side-col{position:sticky;top:96px;}}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px;box-shadow:var(--shadow-s);
}
.side-card h3{font-size:15px;font-weight:600;margin-bottom:14px;}
.side-links li+li{margin-top:2px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:44px;padding:0 12px;border-radius:10px;font-size:14px;color:var(--ink-2);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.side-links a:hover{background:rgba(20,69,60,.05);color:var(--primary);}
.side-links a svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;}
.side-note{font-size:13px;color:var(--muted);line-height:1.75;margin:0;}
.side-note strong{color:var(--ink-2);font-weight:600;}

/* ---------- faq ---------- */
.faq-list{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  overflow:hidden;box-shadow:var(--shadow-s);
}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:12px 24px;cursor:pointer;list-style:none;
  transition:background var(--t) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(20,69,60,.04);}
.faq-q{font-size:16px;font-weight:600;color:var(--ink);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--primary);border-radius:2px;
  transition:transform var(--t) var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg) scaleY(0);}
.faq-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows 260ms var(--ease);}
.faq-item[open] .faq-body{grid-template-rows:1fr;}
.faq-body>div{overflow:hidden;}
.faq-body p{padding:0 24px 20px;margin:0;font-size:15.5px;color:var(--ink-2);}
.faq-more{
  margin-top:20px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);
}

/* ---------- revision timeline ---------- */
.timeline{position:relative;padding-left:22px;}
.timeline::before{content:'';position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--line-strong);}
.timeline li{position:relative;padding:0 0 22px 0;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:'';position:absolute;left:-21px;top:8px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
}
.timeline time{display:block;font-size:13px;color:var(--muted);margin-bottom:2px;}
.timeline p{margin:0;font-size:14.5px;color:var(--ink-2);}

/* ---------- dark cta bar ---------- */
.cta-bar{background:var(--primary-deep);}
.cta-bar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  min-height:112px;padding:24px 0;
}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.4vw,26px);font-weight:700;}
.cta-bar p{margin:8px 0 0;color:rgba(247,245,241,.72);font-size:14.5px;max-width:640px;}
.cta-bar .btn-ghost{background:transparent;border-color:rgba(247,245,241,.28);color:#F7F5F1;}
.cta-bar .btn-ghost:hover{background:rgba(247,245,241,.08);border-color:rgba(247,245,241,.5);color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#F7F5F1;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#F7F5F1;font-size:17px;font-weight:800;}
.footer-logo:hover{color:#fff;}
.footer-about{margin:16px 0 0;font-size:13px;color:rgba(247,245,241,.62);line-height:1.8;max-width:280px;}
.footer-title{font-size:14px;font-weight:600;color:#F7F5F1;margin-bottom:16px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{
  font-size:13px;color:rgba(247,245,241,.62);
  transition:color var(--t) var(--ease);
}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(247,245,241,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 620ms var(--ease),transform 620ms 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;animation-duration:1ms !important;}
}