/* roulang page: index */
:root{
  --brand:#E4572E;
  --brand-dark:#B93C18;
  --ink:#103B36;
  --mint:#2FBFA0;
  --text:#14161A;
  --muted:#5A6068;
  --faint:#9AA0A6;
  --line:#E6E2DA;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --onink:#F2F0EA;
  --radius:6px;
  --radius-lg:10px;
  --shadow:0 1px 2px rgba(20,22,26,.04);
  --shadow-lg:0 8px 24px rgba(20,22,26,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.01em;line-height:1.28}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:768px){.shell{padding:0 20px}}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px rgba(20,22,26,.05)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;flex:none}
.logo-text{display:flex;align-items:baseline;gap:7px;white-space:nowrap}
.logo-main{font-size:19px;font-weight:900;color:var(--text);letter-spacing:-.02em;font-style:normal}
.logo-sub{font-size:12px;color:var(--faint);letter-spacing:.06em;font-style:normal}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:inline-block;padding:8px 11px;font-size:14px;color:var(--muted);border-radius:6px;transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link:hover{color:var(--brand);background:#F5F1EA}
.nav-link.is-active{color:var(--text);font-weight:700}
.nav-link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;background:var(--brand);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;position:relative}
.menu-toggle span{position:absolute;left:11px;right:11px;height:1.6px;background:var(--text);border-radius:2px;transition:.2s var(--ease)}
.menu-toggle span:nth-child(1){top:14px}
.menu-toggle span:nth-child(2){top:19.2px}
.menu-toggle span:nth-child(3){top:24.4px}
.menu-toggle.is-open span:nth-child(1){top:19.2px;transform:rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){top:19.2px;transform:rotate(-45deg)}
@media (max-width:1080px){
  .main-nav{display:none}
  .menu-toggle{display:block}
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,26,.45);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:90}
.drawer-mask.show{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;z-index:95;
  transform:translateX(100%);transition:transform .24s var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;line-height:1}
.drawer-nav{padding:16px 0;display:flex;flex-direction:column;gap:2px}
.drawer-nav a{padding:12px 10px;border-radius:6px;font-size:15px;color:var(--text);font-weight:600}
.drawer-nav a:hover{background:#F5F1EA;color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.drawer-foot .meta{font-size:13px;color:var(--faint)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(16,59,54,.08)}
.btn-light{background:transparent;color:var(--onink);border-color:rgba(242,240,234,.5)}
.btn-light:hover{background:rgba(242,240,234,.12);border-color:var(--onink)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:14px}
.link-arrow i{font-style:normal;transition:transform .18s var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-white{background:#fff}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:48px;flex-wrap:wrap}
.sec-title{font-size:clamp(24px,3vw,36px);font-weight:900;position:relative;padding-left:18px}
.sec-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;background:var(--brand);border-radius:2px}
.sec-desc{max-width:660px;margin-top:14px;font-size:15px;color:var(--muted)}
.eyebrow{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;letter-spacing:.18em;color:var(--faint);text-transform:uppercase;margin-bottom:12px}
@media (max-width:768px){
  .section{padding:60px 0}
  .section-tight{padding:48px 0}
  .sec-head{margin-bottom:32px}
}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:4px;
  border:1px solid var(--ink);color:var(--ink);background:rgba(16,59,54,.04);
  font-size:12px;letter-spacing:.08em;line-height:1;
}
.badge-brand{border-color:var(--brand);color:var(--brand);background:rgba(228,87,46,.06)}
.badge-mint{border-color:var(--mint);color:#1E8D76;background:rgba(47,191,160,.1)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:4px;background:#F2EFE8;color:var(--muted);font-size:12px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:0 0 76px;background:var(--bg);overflow:hidden}
.hero-status{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:11px 0;margin-bottom:54px;
}
.hero-status-inner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;letter-spacing:.08em;color:var(--muted)}
.hero-status .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block}
.hero-status .sep{color:var(--line)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy h1{
  font-size:clamp(32px,5vw,56px);font-weight:900;letter-spacing:-.02em;line-height:1.16;color:var(--text);
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.75;color:var(--muted);max-width:520px}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.stat-num{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:21px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.stat-label{font-size:12px;letter-spacing:.14em;color:var(--faint);margin-top:6px}
.hero-media{position:relative;border-radius:8px;overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-lg);background:#E9E5DD}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .veil{position:absolute;inset:0;background:linear-gradient(to top,rgba(16,59,54,.45),rgba(16,59,54,0) 62%)}
.hero-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.4);border-radius:8px;pointer-events:none}
.hero-media .media-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:4px;
  background:var(--mint);color:#053B31;font-size:12px;font-weight:700;letter-spacing:.06em;
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .hero-status{margin-bottom:34px}
}
@media (max-width:640px){
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .hero-actions .btn{width:100%}
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding:8px 0}
.timeline::before{content:"";position:absolute;top:12px;bottom:12px;left:50%;width:1px;background:var(--line)}
.tl-item{position:relative;width:50%;padding:0 46px 44px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 44px 46px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;top:10px;right:-5px;width:10px;height:10px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 0 4px var(--bg);transition:background .3s var(--ease);
}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-5px}
.tl-item.is-passed .tl-dot{background:var(--brand)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tl-item:hover .tl-card{transform:translateX(-4px);box-shadow:var(--shadow-lg);border-color:rgba(228,87,46,.25)}
.tl-time{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;color:var(--brand);letter-spacing:.06em}
.tl-card h3{font-size:19px;font-weight:800;margin-top:8px}
.tl-meta{font-size:13.5px;color:var(--faint);margin-top:6px}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
@media (max-width:860px){
  .timeline::before{left:5px}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 32px 34px}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:0;right:auto;top:8px}
  .tl-item:hover .tl-card{transform:translateX(0)}
}

/* ---------- 亮点卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(228,87,46,.25)}
.feature-thumb{position:relative;aspect-ratio:4/5;overflow:hidden;background:#E9E5DD}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.feature-card:hover .feature-thumb img{transform:scale(1.03)}
.feature-veil{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  background:linear-gradient(to top,rgba(16,59,54,.85),rgba(16,59,54,0));
  color:var(--onink);font-size:13px;opacity:0;transform:translateY(6px);
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.feature-card:hover .feature-veil{opacity:1;transform:translateY(0)}
.feature-body{padding:18px 20px 22px}
.feature-body h3{font-size:17px;font-weight:800}
.feature-body p{font-size:14px;margin-top:8px;color:var(--muted)}
.wide-card{display:grid;grid-template-columns:1.05fr 1fr;gap:0;margin-top:28px;overflow:hidden;background:var(--ink);border-radius:var(--radius);border:1px solid var(--ink)}
.wide-card img{width:100%;height:100%;object-fit:cover;min-height:220px}
.wide-body{padding:36px 38px;color:rgba(242,240,234,.82)}
.wide-body h3{color:#fff;font-size:22px;font-weight:800}
.wide-body p{margin-top:12px;font-size:14.5px;color:rgba(242,240,234,.78)}
.wide-body .badge{border-color:var(--mint);color:#8FE6D3;background:rgba(47,191,160,.12);margin-bottom:16px}
@media (max-width:1024px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){
  .feature-grid{grid-template-columns:1fr}
  .wide-card{grid-template-columns:1fr}
  .wide-body{padding:28px 22px}
}

/* ---------- 数据条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.metric{background:#fff;padding:26px 24px}
.metric .num{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:28px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.metric .num em{font-style:normal;font-size:14px;color:var(--faint);margin-left:4px}
.metric .cap{font-size:13.5px;color:var(--muted);margin-top:8px}
@media (max-width:768px){.metrics{grid-template-columns:1fr 1fr}}

/* ---------- 方案矩阵 ---------- */
.plan-matrix{display:grid;grid-template-columns:1.15fr 1fr 1fr 1fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.pm-cell{border-top:1px solid var(--line);border-right:1px solid var(--line);padding:16px 20px;font-size:14.5px;display:flex;align-items:center;min-height:60px;transition:background .18s var(--ease)}
.pm-cell:last-child{border-right:none}
.pm-head{border-top:none;flex-direction:column;align-items:flex-start;justify-content:center;padding:24px 20px;gap:4px}
.pm-head .pm-name{font-size:15px;font-weight:800;color:var(--text);letter-spacing:.02em;position:relative}
.pm-head .pm-price{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:26px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.pm-head .pm-price em{font-style:normal;font-size:12px;color:var(--faint);margin-left:4px;font-weight:400}
.pm-feature{color:var(--faint);font-size:13.5px;background:#FCFBF8}
.pm-reco{background:var(--ink);color:rgba(242,240,234,.88)}
.pm-reco.pm-head{color:#fff}
.pm-reco.pm-head .pm-name,.pm-reco.pm-head .pm-price{color:#fff}
.pm-reco.pm-head .pm-price em{color:rgba(242,240,234,.6)}
.pm-matrix-row:hover .pm-cell{background:#FBF8F3}
.pm-matrix-row:hover .pm-reco{background:#0C302C}
.pm-corner{position:absolute;top:-24px;right:-20px;background:var(--mint);color:#053B31;font-size:11px;font-weight:700;padding:3px 8px;border-radius:0 0 0 6px;letter-spacing:.06em}
.plan-cards{display:none;flex-direction:column;gap:20px}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.plan-card.reco{border-color:var(--ink);border-width:2px}
.plan-card h3{font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:space-between;gap:12px}
.plan-card .price{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:22px;color:var(--brand);font-weight:800}
.plan-card ul{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.plan-card li{display:flex;justify-content:space-between;gap:16px;font-size:14px;padding:7px 0;color:var(--muted)}
.plan-card li span:first-child{color:var(--faint)}
@media (max-width:900px){
  .plan-matrix{display:none}
  .plan-cards{display:flex}
}

/* ---------- 预约表单 ---------- */
.apply{background:var(--ink);color:rgba(242,240,234,.82);padding:96px 0}
.apply-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start}
.apply h2{color:#fff;font-size:clamp(24px,3vw,34px);font-weight:900;position:relative;padding-left:18px}
.apply h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;background:var(--mint);border-radius:2px}
.apply-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:rgba(242,240,234,.76);max-width:460px}
.apply-points{margin-top:30px;display:flex;flex-direction:column;gap:14px}
.apply-points li{display:flex;gap:12px;font-size:14.5px;color:rgba(242,240,234,.82)}
.apply-points li b{color:#fff;font-weight:700}
.apply-points .mark{width:6px;height:6px;border-radius:50%;background:var(--mint);margin-top:11px;flex:none}
.form-card{background:#fff;border-radius:var(--radius-lg);padding:32px;box-shadow:0 18px 44px rgba(0,0,0,.2)}
.form-card h3{font-size:19px;font-weight:800}
.form-card .hint{font-size:13.5px;color:var(--faint);margin-top:6px}
.plan-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.field{display:flex;flex-direction:column}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:700;color:var(--text);margin-bottom:8px}
.field label .req{color:var(--brand);margin-left:3px}
.input{width:100%;height:46px;border:1px solid var(--line);border-radius:var(--radius);padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#9AA0A6 50%),linear-gradient(135deg,#9AA0A6 50%,transparent 50%);background-position:calc(100% - 19px) 20px,calc(100% - 14px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(228,87,46,.12)}
.input.is-error{border-color:var(--brand);color:var(--brand)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);grid-column:1 / -1;margin-top:2px}
.check-row input{width:17px;height:17px;margin-top:4px;accent-color:var(--brand);flex:none}
.check-row a{color:var(--brand);font-weight:600}
.form-note{font-size:12.5px;color:var(--faint);margin-top:14px}
.form-msg{margin-top:16px;font-size:13.5px;color:var(--brand);display:none}
.form-msg.show{display:block}
@media (max-width:1024px){
  .apply-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:640px){
  .plan-form-grid{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(228,87,46,.25)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9E5DD}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-thumb .badge{position:absolute;left:12px;top:12px;background:#fff}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;font-weight:800;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s var(--ease)}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;color:var(--faint)}
.news-meta i{font-style:normal;transition:transform .18s var(--ease)}
.news-card:hover .news-meta i{transform:translateX(3px);color:var(--brand)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);background:#fff;
  padding:56px 24px;text-align:center;
}
.empty-art{width:120px;height:120px;margin:0 auto 20px}
.empty-state p{font-size:14.5px;color:var(--muted)}
.empty-actions{display:flex;gap:12px;justify-content:center;margin-top:22px;flex-wrap:wrap}
@media (max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(24px,3vw,34px);font-weight:900;position:relative;padding-left:18px}
.faq-aside h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;background:var(--brand);border-radius:2px}
.faq-aside p{margin-top:16px;font-size:15px;color:var(--muted);max-width:400px}
.faq-contact{margin-top:26px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.faq-contact .t{font-size:14px;font-weight:800;color:var(--text)}
.faq-contact .d{font-size:13.5px;color:var(--muted);margin-top:6px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:none;border:0;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 0;font-size:16px;font-weight:700;color:var(--text);text-align:left;cursor:pointer;transition:color .18s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-icon{width:22px;height:22px;flex:none;position:relative;transition:transform .28s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 44px 22px 0;font-size:14.5px;color:var(--muted);line-height:1.85}
@media (max-width:900px){
  .faq-grid{grid-template-columns:1fr;gap:32px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--onink);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(242,240,234,.12)}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:rgba(242,240,234,.55)}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.8;color:rgba(242,240,234,.62);max-width:280px}
.footer-title{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.footer-link{display:block;font-size:14px;color:rgba(242,240,234,.68);padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-contact{font-size:13.5px;color:rgba(242,240,234,.68);line-height:1.9}
.footer-contact b{color:#fff;font-weight:700}
.qr-box{width:96px;height:96px;border:1px dashed rgba(242,240,234,.32);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(242,240,234,.5);margin-top:14px;letter-spacing:.08em}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;font-size:12.5px;color:rgba(242,240,234,.5);flex-wrap:wrap}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
}

/* ---------- 动效 ---------- */
.reveal,.reveal-stagger>*{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in,.reveal-stagger.in>*{opacity:1;transform:none}
.reveal-stagger.in>*:nth-child(2){transition-delay:.06s}
.reveal-stagger.in>*:nth-child(3){transition-delay:.12s}
.reveal-stagger.in>*:nth-child(4){transition-delay:.18s}
.reveal-stagger.in>*:nth-child(5){transition-delay:.24s}
.reveal-stagger.in>*:nth-child(6){transition-delay:.3s}
.reveal-stagger.in>*:nth-child(7){transition-delay:.36s}
.reveal-stagger.in>*:nth-child(8){transition-delay:.42s}

.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer;
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
  box-shadow:var(--shadow-lg);z-index:70;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal,.reveal-stagger>*{opacity:1 !important;transform:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand:#E4572E;--brand-dark:#B93C18;--ink-green:#103B36;--mint:#2FBFA0;
  --ink:#14161A;--graphite:#5A6068;--mist:#9AA0A6;--line:#E6E2DA;
  --sand:#F7F5F0;--card:#FFFFFF;--inv:#F2F0EA;
  --r-sm:4px;--r-md:6px;--r-lg:10px;
  --sh-1:0 1px 2px rgba(20,22,26,.04);
  --sh-2:0 8px 24px rgba(20,22,26,.08);
  --ff:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --fm:"SF Mono",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--ff);font-size:16px;line-height:1.85;color:var(--graphite);background:var(--sand);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.015em;font-weight:800;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(228,87,46,.16)}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--fm);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 12px rgba(20,22,26,.05)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.logo-text{display:flex;align-items:baseline;gap:8px;flex:none}
.logo-text .logo-main{font-style:normal;font-size:22px;font-weight:900;color:var(--ink);letter-spacing:-.03em}
.logo-text .logo-sub{font-style:normal;font-size:13px;font-weight:600;color:var(--mist);letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:var(--r-md);font-size:15px;font-weight:600;color:var(--graphite);transition:background .18s ease,color .18s ease}
.nav-link:hover{background:#F6F2EC;color:var(--brand)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-md);font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;border-color:var(--ink-green);color:var(--ink-green)}
.btn-ghost:hover{background:rgba(16,59,54,.08)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--r-md)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand)}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(3px)}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:var(--r-md);cursor:pointer}
.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:90;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,22,26,.42)}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(84vw,340px);background:#fff;border-left:1px solid var(--line);padding:24px 20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;transform:translateX(16px);opacity:0;transition:transform .24s ease,opacity .24s ease}
.drawer.is-open .drawer-panel{transform:translateX(0);opacity:1}
.drawer-title{font-size:12px;letter-spacing:.18em;color:var(--mist);font-weight:700;margin:14px 0 4px}
.drawer .nav-link{height:44px;padding:0 12px;font-size:15px}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--graphite)}

/* ---------- page ---------- */
.page{padding:0 0 96px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--mist)}
.crumbs a{color:var(--graphite)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#CFC9BE}
.crumbs .current{color:var(--mist);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{padding:44px 0 28px;border-bottom:1px solid var(--line)}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-sm);border:1px solid var(--ink-green);color:var(--ink-green);font-size:12px;font-weight:700;letter-spacing:.08em;background:#fff}
.badge-brand{border-color:var(--brand);color:var(--brand)}
.article-head h1{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:16px 0 18px;letter-spacing:-.02em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--mist)}
.meta-row .divider{width:1px;height:13px;background:var(--line)}
.meta-row b{color:var(--graphite);font-weight:600}
.cover{margin:28px 0 0}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line)}
.cover figcaption{margin-top:10px;font-size:12px;color:var(--mist)}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 220px;gap:48px;justify-content:center;padding-top:48px}
.article-body{font-size:17px;line-height:1.9;color:var(--graphite);max-width:760px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:clamp(22px,2.6vw,28px);color:var(--ink);font-weight:800;margin:2em 0 .8em;padding-left:14px;border-left:3px solid var(--brand);letter-spacing:-.015em;scroll-margin-top:96px}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:1.7em 0 .6em;line-height:1.5}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin:.4em 0}
.article-body li::marker{font-family:var(--fm);color:var(--brand)}
.article-body blockquote{margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--ink-green);background:#F1F5F3;border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:1.6em auto}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(228,87,46,.35)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body code{font-family:var(--fm);font-size:.92em;background:#F2EFE9;padding:2px 6px;border-radius:var(--r-sm);color:var(--ink-green)}
.article-body pre{background:var(--ink-green);color:var(--inv);padding:18px 20px;border-radius:var(--r-md);overflow-x:auto;font-size:14px;line-height:1.7}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;display:block;overflow-x:auto;white-space:nowrap}
.article-body thead th{background:#F6F2EC;color:var(--ink);font-weight:700;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:hover{background:rgba(16,59,54,.04)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.empty-state{border:1px dashed var(--line);background:#fff;border-radius:var(--r-lg);padding:48px 32px;text-align:center}
.empty-state .ic{width:120px;height:120px;margin:0 auto 18px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--mist);font-size:13px;letter-spacing:.12em}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--mist);margin-bottom:22px}

/* ---------- toc ---------- */
.toc{position:sticky;top:96px;align-self:start}
.toc-head{display:flex;align-items:center;justify-content:space-between;font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--mist);padding-bottom:12px;border-bottom:1px solid var(--line)}
.toc-list{list-style:none;margin:14px 0 0;padding:0;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{display:block;padding:8px 0 8px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:13.5px;line-height:1.6;color:var(--graphite);transition:color .18s ease,border-color .18s ease}
.toc-list a:hover{color:var(--brand)}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);font-weight:700}
.toc-toggle{display:none}

/* ---------- tail sections ---------- */
.tail{margin-top:64px}
.tail-block{padding-top:40px;border-top:1px solid var(--line)}
.section-label{font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--mist);text-transform:uppercase}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-md);font-size:13px;font-weight:600;color:var(--graphite);background:#fff;transition:color .18s ease,border-color .18s ease}
.tag:hover{color:var(--brand);border-color:rgba(228,87,46,.4)}
.share{display:flex;align-items:center;gap:10px;margin-top:24px;font-size:13px;color:var(--mist)}
.share span.i{width:34px;height:34px;border:1px solid var(--line);border-radius:var(--r-md);display:inline-flex;align-items:center;justify-content:center;background:#fff;transition:border-color .18s ease,color .18s ease,transform .18s ease;cursor:pointer;color:var(--graphite)}
.share span.i:hover{border-color:rgba(228,87,46,.5);color:var(--brand);transform:translateY(-2px)}
.pn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:18px}
.pn-card{display:flex;flex-direction:column;gap:8px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25)}
.pn-card em{font-style:normal;font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--mist)}
.pn-card strong{font-size:17px;font-weight:700;color:var(--ink);line-height:1.6}
.pn-card .row{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand)}
.pn-card:hover .row svg{transform:translateX(3px)}
.pn-card .row svg{transition:transform .18s ease}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:20px}
.rel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25)}
.rel-thumb{position:relative;overflow:hidden;background:#F1EEE7}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16.5px;font-weight:700;line-height:1.6}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--mist)}
.rel-foot .cat{color:var(--ink-green);font-weight:700}
.back-row{margin-top:32px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-green);color:var(--inv);margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(242,240,234,.12)}
.site-footer .logo-main{color:#fff}
.site-footer .logo-sub{color:rgba(242,240,234,.6)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(242,240,234,.72);max-width:30ch}
.footer-title{font-size:12px;letter-spacing:.18em;font-weight:700;color:rgba(242,240,234,.55);margin:0 0 16px}
.footer-link{display:block;font-size:14px;color:rgba(242,240,234,.82);padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-link:hover{color:var(--mint);transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:2;color:rgba(242,240,234,.75)}
.footer-contact b{color:#fff;font-weight:700}
.qr-box{width:96px;height:96px;margin-top:16px;border:1px dashed rgba(242,240,234,.4);border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(242,240,234,.6)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:22px 0;font-size:13px;color:rgba(242,240,234,.6);font-family:var(--fm)}

/* ---------- misc ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);opacity:0;pointer-events:none;transition:opacity .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;z-index:70;cursor:pointer}
.to-top.is-show{opacity:1;pointer-events:auto}
.to-top:hover{color:var(--brand);border-color:rgba(228,87,46,.5);transform:translateY(-2px)}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1024px){
  .shell{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .toc{position:static;order:2;border:1px solid var(--line);background:#fff;border-radius:var(--r-md);padding:16px 18px}
  .toc-head{border-bottom:none;padding-bottom:0}
  .toc-toggle{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--brand);background:none;border:none;cursor:pointer}
  .toc-list{display:none;border-left:1px solid var(--line)}
  .toc.is-open .toc-list{display:block}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:768px){
  .page{padding-bottom:64px}
  .article-head{padding:32px 0 22px}
  .article-body{font-size:16.5px}
  .pn-grid{grid-template-columns:minmax(0,1fr)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:520px){
  .shell{padding:0 20px}
  .header-inner{height:62px;gap:12px}
  .logo-text .logo-sub{display:none}
  .header-actions .btn-primary{display:none}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --c-primary:#E4572E;
  --c-primary-dark:#B93C18;
  --c-primary-soft:#FBEFE9;
  --c-jade:#103B36;
  --c-jade-soft:#E7EFED;
  --c-mint:#2FBFA0;
  --c-ink:#14161A;
  --c-body:#5A6068;
  --c-muted:#9AA0A6;
  --c-line:#E6E2DA;
  --c-bg:#F7F5F0;
  --c-card:#FFFFFF;
  --c-inverse:#F2F0EA;
  --r-sm:6px;
  --r-lg:10px;
  --sh-1:0 1px 2px rgba(20,22,26,.04);
  --sh-2:0 8px 24px rgba(20,22,26,.08);
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(228,87,46,.18)}

.shell{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--c-primary);font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);display:block}
.h2{
  font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:800;
  letter-spacing:-.02em;color:var(--c-ink);margin-top:12px;
}
.h3{font-size:20px;line-height:1.45;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.lead{font-size:16.5px;color:var(--c-body);max-width:720px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-jade);color:var(--c-jade)}
.btn-ghost:hover{background:rgba(16,59,54,.08)}
.btn-light{background:#fff;color:var(--c-jade)}
.btn-light:hover{background:var(--c-inverse);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;
  font-weight:700;color:var(--c-primary);background:none;border:0;cursor:pointer;padding:0;
}
.btn-text span{transition:transform .18s ease}
.btn-text:hover span{transform:translateX(3px)}
.btn:focus-visible,.btn-text:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;
}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  border-radius:4px;font-size:12px;letter-spacing:.08em;font-weight:700;
  border:1px solid var(--c-jade);color:var(--c-jade);background:transparent;
}
.badge-accent{border-color:var(--c-primary);color:var(--c-primary)}
.badge-solid{background:var(--c-jade);color:var(--c-inverse);border-color:var(--c-jade)}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 1px 2px rgba(20,22,26,.05)}
.header-inner{display:flex;align-items:center;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:8px;background:var(--c-jade);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--c-inverse);opacity:.85}
.brand-mark .dot-mint{position:absolute;top:-3px;right:-3px;width:9px;height:9px;border-radius:50%;background:var(--c-mint)}
.brand-mark .grid3{display:grid;grid-template-columns:repeat(3,4px);gap:3px}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-main{font-style:normal;font-weight:900;font-size:18px;color:var(--c-ink);letter-spacing:-.01em}
.logo-sub{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--c-muted);font-weight:600}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;color:#3D434A;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.nav-link:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-link.is-active{color:var(--c-ink)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle.is-open i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open i:nth-child(2){opacity:0}
.nav-toggle.is-open i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,26,.45);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:360px;z-index:90;
  background:#fff;padding:24px 22px 32px;overflow-y:auto;
  transform:translateX(102%);transition:transform .24s ease;
  display:flex;flex-direction:column;gap:22px;
}
.mobile-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(--c-line)}
.drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;cursor:pointer;font-size:18px;color:var(--c-ink);line-height:1}
.drawer-title{font-size:12px;letter-spacing:.18em;font-family:var(--mono);color:var(--c-muted);font-weight:700;margin-bottom:6px}
.drawer-link{
  display:block;padding:13px 14px;border-radius:var(--r-sm);font-weight:700;color:var(--c-ink);
  font-size:15.5px;border:1px solid transparent;
}
.drawer-link:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);border-color:rgba(228,87,46,.25)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--c-line);padding-top:20px}
.drawer-foot p{font-size:13.5px;color:var(--c-body);line-height:1.9}

/* ===== 分类 Hero ===== */
.cat-hero{
  position:relative;color:var(--c-inverse);overflow:hidden;
  background-image:linear-gradient(90deg,rgba(16,59,54,.97) 0%,rgba(16,59,54,.90) 52%,rgba(16,59,54,.62) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cat-hero-inner{padding:60px 0 54px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,240,234,.66);padding:0 0 18px;border-bottom:1px solid rgba(242,240,234,.14);margin-bottom:32px}
.crumbs a{color:rgba(242,240,234,.86)}
.crumbs a:hover{color:#fff}
.crumbs .sep{opacity:.45}
.crumbs .current{color:rgba(242,240,234,.55)}
.hero-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:52px;align-items:center}
.cat-hero .eyebrow{color:var(--c-mint)}
.cat-hero .eyebrow::before{background:var(--c-mint)}
.cat-hero h1{
  font-size:clamp(32px,4.4vw,52px);line-height:1.16;font-weight:900;
  letter-spacing:-.02em;color:#fff;margin:16px 0 18px;max-width:16em;
}
.hero-sub{font-size:17px;line-height:1.8;color:rgba(242,240,234,.82);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:40px;margin-top:38px;padding-top:26px;border-top:1px solid rgba(242,240,234,.16)}
.fact-num{font-family:var(--mono);font-size:26px;font-weight:700;color:#fff;line-height:1.2;letter-spacing:-.01em}
.fact-label{font-size:12px;letter-spacing:.16em;color:rgba(242,240,234,.6);margin-top:4px;font-family:var(--mono)}
.hero-figure{position:relative;border-radius:8px;overflow:hidden;box-shadow:0 18px 44px rgba(0,0,0,.28)}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.18);border-radius:8px;pointer-events:none}
.hero-figure .fig-tag{
  position:absolute;left:14px;bottom:14px;height:24px;padding:0 10px;display:inline-flex;align-items:center;
  border-radius:4px;background:var(--c-mint);color:#0B2C28;font-size:12px;font-weight:800;letter-spacing:.06em;
}

/* ===== 适用情形条带 ===== */
.scene-strip{background:#fff;border-bottom:1px solid var(--c-line)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:44px 0}
.scene-item{border-left:2px solid var(--c-line);padding-left:18px;transition:border-color .2s ease}
.scene-item:hover{border-left-color:var(--c-primary)}
.scene-item .h3{font-size:16.5px;margin-bottom:6px}
.scene-item p{font-size:14.5px;line-height:1.8}
.scene-item .idx{font-family:var(--mono);font-size:12px;color:var(--c-primary);letter-spacing:.14em;font-weight:700}

/* ===== 主体：目录 + 分节 ===== */
.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}
.toc{position:sticky;top:96px}
.toc-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);padding:18px 14px;box-shadow:var(--sh-1)}
.toc-title{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;color:var(--c-muted);font-weight:700;padding:0 10px 12px;border-bottom:1px solid var(--c-line);margin-bottom:10px}
.toc-list a{
  display:block;padding:9px 12px;border-radius:0 var(--r-sm) var(--r-sm) 0;
  border-left:2px solid transparent;font-size:14px;color:var(--c-body);line-height:1.55;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.toc-list a.is-active{color:var(--c-primary);border-left-color:var(--c-primary);background:var(--c-primary-soft);font-weight:700}
.toc-toggle{
  display:none;width:100%;align-items:center;justify-content:space-between;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:14px 16px;font-size:15px;font-weight:700;color:var(--c-ink);cursor:pointer;
}
.toc-toggle em{font-style:normal;color:var(--c-primary);font-size:18px;transition:transform .2s ease}
.toc.is-open .toc-toggle em{transform:rotate(45deg)}

.doc-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--c-line);scroll-margin-top:96px}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.num-badge{
  width:36px;height:36px;flex-shrink:0;border:1px solid var(--c-line);border-radius:var(--r-sm);
  display:grid;place-items:center;font-family:var(--mono);font-size:14px;font-weight:700;color:var(--c-primary);background:#fff;
}
.doc-section > p{margin-bottom:14px}
.doc-section > p:last-of-type{margin-bottom:0}
.note{
  background:#fff;border:1px solid var(--c-line);border-left:3px solid var(--c-jade);
  border-radius:0 var(--r-sm) var(--r-sm) 0;padding:16px 20px;margin:22px 0;
  font-size:15px;line-height:1.85;color:var(--c-body);
}
.note b{color:var(--c-ink)}

/* 步骤条 */
.steps{position:relative;margin:26px 0 4px}
.steps::before{content:"";position:absolute;left:8px;top:8px;bottom:14px;width:1px;background:var(--c-line)}
.step{position:relative;padding-left:32px;padding-bottom:20px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:0;top:5px;width:17px;height:17px;border-radius:50%;
  background:#fff;border:1px solid var(--c-mint);
}
.step::after{
  content:"";position:absolute;left:5px;top:10px;width:7px;height:7px;border-radius:50%;background:var(--c-mint);
}
.step-title{font-size:16px;font-weight:700;color:var(--c-ink);line-height:1.6}
.step-title .mono{color:var(--c-muted);font-size:13px;margin-right:8px;font-weight:700}
.step p{font-size:15px;margin-top:2px;line-height:1.8}

/* 清单 */
.check-list{margin:20px 0 0;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15.5px;line-height:1.8;color:var(--c-body)}
.check-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--c-primary);
  margin-top:11px;flex-shrink:0;
}

/* 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;margin-top:24px}
table.tbl{width:100%;border-collapse:collapse;min-width:640px}
table.tbl th{
  text-align:left;background:#FBF9F5;color:var(--c-ink);font-size:13.5px;font-weight:800;
  letter-spacing:.04em;padding:14px 18px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
table.tbl td{padding:15px 18px;border-bottom:1px solid var(--c-line);font-size:14.8px;line-height:1.75;vertical-align:top}
table.tbl tbody tr:last-child td{border-bottom:0}
table.tbl tbody tr{transition:background-color .16s ease}
table.tbl tbody tr:hover{background:rgba(20,22,26,.04)}
table.tbl td:first-child{color:var(--c-ink);font-weight:700}

/* ===== 通用卡片网格 ===== */
.card-grid{display:grid;gap:28px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25)}
.card .h3{margin-bottom:10px;font-size:18px}
.card p{font-size:15px;line-height:1.8}
.card .badge{margin-bottom:14px}

/* 流程总览 */
.flow-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.flow-item{padding:34px 26px;border-right:1px solid var(--c-line);position:relative}
.flow-item:last-child{border-right:0}
.flow-item .mono{font-size:13px;color:var(--c-mint);font-weight:700;letter-spacing:.1em}
.flow-item .h3{font-size:17px;margin:10px 0 8px}
.flow-item p{font-size:14.5px;line-height:1.8}
.flow-item::before{
  content:"";position:absolute;top:0;left:0;width:0;height:2px;background:var(--c-primary);
  transition:width .35s cubic-bezier(.2,.7,.3,1);
}
.flow-item:hover::before{width:100%}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-aside p{margin-top:16px;font-size:15.5px}
.faq-aside .btn{margin-top:26px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--c-ink);line-height:1.6;
}
.faq-q:hover{color:var(--c-primary-dark)}
.faq-i{
  flex-shrink:0;width:22px;height:22px;line-height:20px;text-align:center;
  color:var(--c-primary);font-size:19px;font-weight:400;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);margin-top:3px;
}
.faq-item.is-open .faq-i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 40px 22px 0;font-size:15.2px;line-height:1.85;color:var(--c-body)}

/* ===== CTA ===== */
.cta-band{
  background:var(--c-jade);color:var(--c-inverse);border-radius:var(--r-lg);
  padding:52px 56px;display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(47,191,160,.28);
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;letter-spacing:-.02em;color:#fff;line-height:1.35}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(242,240,234,.8);max-width:36em}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative;z-index:1}
.cta-actions .btn{width:100%}
.cta-meta{margin-top:24px;display:flex;flex-wrap:wrap;gap:28px;font-size:13px;color:rgba(242,240,234,.62);font-family:var(--mono)}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer;
  display:grid;place-items:center;font-size:16px;z-index:60;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,color .2s ease,border-color .2s ease;
  box-shadow:var(--sh-1);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{color:var(--c-primary);border-color:rgba(228,87,46,.5)}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-jade);color:var(--c-inverse);padding:64px 0 0;margin-top:96px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;
  padding-bottom:48px;border-bottom:1px solid rgba(242,240,234,.12);
}
.site-footer .logo-main{color:#fff}
.site-footer .logo-sub{color:rgba(242,240,234,.6)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(242,240,234,.72);max-width:20em}
.footer-title{font-size:12px;letter-spacing:.18em;font-family:var(--mono);font-weight:700;color:var(--c-mint);margin-bottom:16px}
.footer-link{display:block;font-size:14.5px;color:rgba(242,240,234,.78);padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-contact{font-size:14.5px;line-height:2;color:rgba(242,240,234,.78)}
.footer-contact b{color:#fff;font-weight:700}
.qr-box{
  margin-top:18px;width:96px;height:96px;border:1px dashed rgba(242,240,234,.32);border-radius:var(--r-sm);
  display:grid;place-items:center;font-size:11.5px;color:rgba(242,240,234,.55);letter-spacing:.1em;
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 26px;font-size:13px;color:rgba(242,240,234,.6);
}
.footer-bottom .mono{letter-spacing:.06em}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1)}
.reveal.d1.is-visible{transition-delay:.06s}
.reveal.d2.is-visible{transition-delay:.12s}
.reveal.d3.is-visible{transition-delay:.18s}

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

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions{margin-left:auto}
  .doc-layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .toc-card{display:none;margin-top:12px}
  .toc.is-open .toc-card{display:block}
  .toc-toggle{display:flex}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-item:nth-child(2){border-right:0}
  .flow-item:nth-child(1),.flow-item:nth-child(2){border-bottom:1px solid var(--c-line)}
  .faq-wrap{grid-template-columns:1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;padding:40px 34px;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .cat-hero-inner{padding:44px 0 46px}
  .hero-figure img{aspect-ratio:16/9}
}
@media (max-width:768px){
  .shell{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .header-inner{height:64px}
  .header-actions .btn{display:none}
  .hero-facts{gap:26px;margin-top:28px}
  .fact-num{font-size:22px}
  .scene-grid{grid-template-columns:1fr;padding:36px 0}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow-item{border-right:0;border-bottom:1px solid var(--c-line);padding:26px 20px}
  .flow-item:last-child{border-bottom:0}
  .faq-a p{padding-right:0}
  .cta-band{padding:32px 22px;border-radius:var(--r-sm)}
  .cta-meta{gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .site-footer{padding-top:48px;margin-top:64px}
  .doc-section{padding-bottom:42px;margin-bottom:42px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .cat-hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .to-top{right:16px;bottom:20px}
}

/* roulang page: category2 */
:root{
    --pri:#E4572E;
    --pri-dark:#B93C18;
    --ink:#103B36;
    --mint:#2FBFA0;
    --ink-900:#14161A;
    --gray:#5A6068;
    --mist:#9AA0A6;
    --line:#E6E2DA;
    --bg:#F7F5F0;
    --card:#FFFFFF;
    --on-ink:#F2F0EA;
    --r-sm:4px;
    --r:6px;
    --r-lg:10px;
    --sh-1:0 1px 2px rgba(20,22,26,.04);
    --sh-2:0 8px 24px rgba(20,22,26,.08);
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;padding:0;
    font-family:var(--font);
    font-size:16px;line-height:1.85;
    color:var(--gray);
    background:var(--bg);
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease}
  a:hover{color:var(--pri)}
  button{border:0;background:none;cursor:pointer;font:inherit;color:inherit}
  input,select,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}
  h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;line-height:1.25}
  :focus-visible{outline:2px solid var(--pri);outline-offset:2px}
  ::selection{background:rgba(228,87,46,.18)}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid transparent;
    transition:border-color 200ms ease,box-shadow 200ms ease;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
  .header-inner{display:flex;align-items:center;gap:26px;height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:34px;height:34px;border-radius:8px;background:var(--ink);
    display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  }
  .brand-mark svg{width:20px;height:20px;display:block}
  .logo-text{display:flex;align-items:baseline;gap:6px}
  .logo-main{font-style:normal;font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
  .logo-sub{font-style:normal;font-size:12px;color:var(--gray);letter-spacing:.04em}
  .main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{
    position:relative;padding:8px 14px;border-radius:var(--r);
    font-size:14.5px;color:#3D4249;white-space:nowrap;
  }
  .nav-link:hover{background:#F4F1EB;color:var(--pri)}
  .nav-link.is-active{color:var(--ink-900);font-weight:700}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--pri);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .nav-toggle{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r);
    background:#fff;color:var(--ink-900);font-size:16px;
  }
  .nav-toggle:hover{border-color:rgba(228,87,46,.4);color:var(--pri)}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(20,22,26,.42);z-index:55;
    opacity:0;pointer-events:none;transition:opacity 240ms ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
    background:#fff;z-index:60;padding:22px 22px 28px;
    transform:translateX(100%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
    overflow-y:auto;display:flex;flex-direction:column;
    box-shadow:-12px 0 32px rgba(20,22,26,.12);
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r);font-size:16px}
  .drawer-label{font-size:12px;letter-spacing:.18em;color:var(--mist);text-transform:uppercase;margin:16px 0 8px}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:12px 12px;border-radius:var(--r);font-size:15px;color:#3D4249;
  }
  .drawer-link:hover{background:#F4F1EB;color:var(--pri)}
  .drawer-link.is-active{background:rgba(16,59,54,.06);color:var(--ink);font-weight:700}
  .drawer-cta{margin-top:22px}
  .drawer-contact{margin-top:18px;font-size:13px;color:var(--mist);line-height:2}
  .drawer-contact b{color:var(--ink-900);font-weight:700}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r);border:1px solid transparent;
    font-size:15px;font-weight:700;line-height:1;cursor:pointer;
    transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
  }
  .btn i{font-size:13px}
  .btn-primary{background:var(--pri);color:#fff}
  .btn-primary:hover{background:var(--pri-dark);color:#fff;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:rgba(16,59,54,.08);color:var(--ink)}
  .btn-light{background:#fff;color:var(--ink)}
  .btn-light:hover{background:var(--on-ink);color:var(--ink);transform:translateY(-1px)}
  .btn-outline-light{background:transparent;border-color:rgba(242,240,234,.5);color:var(--on-ink)}
  .btn-outline-light:hover{background:rgba(242,240,234,.12);color:#fff;border-color:rgba(242,240,234,.8)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;color:var(--pri);
    font-size:14px;font-weight:600;
  }
  .btn-link i{transition:transform 180ms ease}
  .btn-link:hover i{transform:translateX(3px)}
  .btn[disabled]{opacity:.4;pointer-events:none}

  /* ---------- badges / chips ---------- */
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 8px;
    border-radius:var(--r-sm);border:1px solid;font-size:12px;letter-spacing:.08em;
    line-height:1;white-space:nowrap;
  }
  .badge-ink{color:var(--ink);border-color:rgba(16,59,54,.35)}
  .badge-pri{color:var(--pri);border-color:rgba(228,87,46,.45)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--pri);font-weight:700;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--pri);display:block}

  /* ---------- hero ---------- */
  .class-hero{background:#fff;border-bottom:1px solid var(--line);padding:54px 0 50px}
  .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
  .hero-title{font-size:clamp(26px,3.4vw,40px);font-weight:900;letter-spacing:-.02em;line-height:1.22;margin:16px 0 14px}
  .hero-sub{font-size:16.5px;color:var(--gray);max-width:32em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 30px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:34px;padding-top:22px;border-top:1px solid var(--line)}
  .hero-meta li{display:flex;flex-direction:column;gap:2px}
  .hero-meta b{font-family:var(--mono);font-size:17px;color:var(--ink-900);font-weight:700}
  .hero-meta span{font-size:12px;color:var(--mist);letter-spacing:.06em}
  .hero-figure{position:relative;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
  .hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
  .hero-figure::after{
    content:"";position:absolute;inset:0;border-radius:8px;
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
    background:linear-gradient(180deg,rgba(16,59,54,0) 45%,rgba(16,59,54,.42) 100%);
    pointer-events:none;
  }
  .figure-tag{
    position:absolute;left:16px;bottom:16px;z-index:2;
    display:inline-flex;align-items:center;gap:8px;
    background:var(--mint);color:#04302A;font-size:12px;font-weight:700;
    letter-spacing:.06em;padding:6px 12px;border-radius:var(--r-sm);
  }

  /* ---------- sections ---------- */
  .section{padding:76px 0}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:720px;margin-bottom:34px}
  .section-title{
    font-size:clamp(23px,2.6vw,32px);font-weight:800;position:relative;padding-left:16px;
  }
  .section-title::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
    background:var(--pri);border-radius:2px;
  }
  .section-desc{margin-top:12px;font-size:15.5px;color:var(--gray);max-width:44em}
  .section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

  /* ---------- filter bar ---------- */
  .filter-bar{
    display:flex;gap:10px;overflow-x:auto;padding:14px 0 18px;
    scrollbar-width:thin;-webkit-overflow-scrolling:touch;
  }
  .filter-bar::-webkit-scrollbar{height:5px}
  .filter-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
  .chip{
    flex:0 0 auto;white-space:nowrap;
    padding:9px 18px;border-radius:999px;border:1px solid var(--line);
    background:#fff;font-size:14px;color:#46505A;
    transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease;
  }
  .chip:hover{border-color:var(--pri);color:var(--pri)}
  .chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700}
  .chip.is-active:hover{color:#fff}

  /* ---------- card grid ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:6px}
  .sec-card{
    position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
    padding:24px;box-shadow:var(--sh-1);
    transition:transform 200ms ease,box-shadow 200ms ease,border-color 200ms ease;
  }
  .sec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25)}
  .sec-card.is-hidden{display:none}
  .card-tag{position:absolute;top:16px;right:16px}
  .icon-box{
    width:44px;height:44px;border-radius:var(--r);background:#FBF6F2;
    border:1px solid rgba(228,87,46,.22);color:var(--pri);
    display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
  }
  .card-title{font-size:17px;font-weight:700;letter-spacing:-.01em;padding-right:80px}
  .card-text{margin:10px 0 16px;font-size:14.8px;color:var(--gray)}
  .card-link{color:var(--pri);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
  .card-link i{transition:transform 180ms ease}
  .card-link:hover i{transform:translateX(3px)}

  /* ---------- steps ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:8px}
  .step{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:24px 22px;box-shadow:var(--sh-1);
    transition:transform 200ms ease,box-shadow 200ms ease,border-color 200ms ease;
  }
  .step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25)}
  .step-top{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .step-num{
    width:32px;height:32px;border-radius:50%;border:1px solid var(--mint);
    color:var(--ink);font-family:var(--mono);font-size:13px;font-weight:700;
    display:flex;align-items:center;justify-content:center;background:rgba(47,191,160,.1);
  }
  .step-line{flex:1;height:1px;background:linear-gradient(90deg,var(--mint),rgba(47,191,160,0))}
  .step-title{font-size:16.5px;font-weight:700}
  .step-text{margin-top:8px;font-size:14.6px;color:var(--gray)}

  /* ---------- figure block ---------- */
  .feature{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
  .feature-media{border-radius:8px;overflow:hidden;border:1px solid var(--line);background:#fff}
  .feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
  .feature-media:hover img{transform:scale(1.03)}
  .feature-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
  .feature-list li{display:flex;gap:12px;font-size:15px;color:var(--gray)}
  .feature-list i{color:var(--mint);margin-top:7px;font-size:14px;flex:0 0 auto}
  .feature-list b{color:var(--ink-900);font-weight:700}

  /* ---------- stat row ---------- */
  .stat-row{
    display:grid;grid-template-columns:repeat(3,1fr);
    background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:40px;
  }
  .stat-cell{padding:26px 24px;border-right:1px solid var(--line)}
  .stat-cell:last-child{border-right:0}
  .stat-cell b{display:block;font-family:var(--mono);font-size:28px;color:var(--pri);font-weight:700;line-height:1.2}
  .stat-cell span{display:block;margin-top:6px;font-size:13px;color:var(--mist);letter-spacing:.04em}

  /* ---------- faq ---------- */
  .faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
  .faq-aside{position:sticky;top:96px}
  .faq-contact{
    margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:20px;box-shadow:var(--sh-1);font-size:14.2px;color:var(--gray);
  }
  .faq-contact b{color:var(--ink-900)}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
  }
  .faq-q:hover{color:var(--pri)}
  .faq-q .plus{
    flex:0 0 auto;width:26px;height:26px;border:1px solid var(--line);border-radius:5px;
    display:flex;align-items:center;justify-content:center;color:var(--pri);
    transition:transform 280ms cubic-bezier(.2,.7,.3,1),border-color 200ms ease;
  }
  .faq-item.is-open .plus{transform:rotate(45deg);border-color:rgba(228,87,46,.4)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.2,.7,.3,1)}
  .faq-a p{padding:0 40px 20px 0;font-size:15px;color:var(--gray)}

  /* ---------- cta ---------- */
  .cta-band{background:var(--ink);color:var(--on-ink);padding:64px 0}
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
  .cta-title{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:800;max-width:22em}
  .cta-text{margin-top:12px;font-size:15.4px;color:rgba(242,240,234,.78);max-width:36em}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:rgba(242,240,234,.78);padding:64px 0 0;font-size:14.4px}
  .site-footer a:hover{color:#fff}
  .footer-grid{
    display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:40px;
    padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand .logo-text{display:flex;align-items:baseline;gap:6px}
  .footer-brand .logo-main{color:#fff;font-size:17px}
  .footer-brand .logo-sub{color:rgba(242,240,234,.68);font-size:12px}
  .footer-desc{margin-top:14px;font-size:14px;color:rgba(242,240,234,.7);max-width:20em}
  .footer-title{color:#fff;font-size:13.5px;font-weight:700;letter-spacing:.06em;margin-bottom:14px}
  .footer-link{display:block;padding:6px 0;color:rgba(242,240,234,.76);font-size:14.2px}
  .footer-contact{line-height:2.1;color:rgba(242,240,234,.76);font-size:14px}
  .footer-contact b{color:#fff;font-weight:700}
  .qr-box{
    width:96px;height:96px;margin-top:14px;border:1px dashed rgba(255,255,255,.28);border-radius:var(--r);
    display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(242,240,234,.6);
    letter-spacing:.08em;
  }
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 26px;font-size:13px;color:rgba(242,240,234,.6);
  }

  /* ---------- back to top ---------- */
  .to-top{
    position:fixed;right:26px;bottom:26px;z-index:40;
    width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
    color:var(--ink);display:flex;align-items:center;justify-content:center;
    box-shadow:var(--sh-1);opacity:0;pointer-events:none;
    transition:opacity 220ms ease,color 200ms ease,border-color 200ms ease,transform 200ms ease;
  }
  .to-top.is-visible{opacity:1;pointer-events:auto}
  .to-top:hover{color:var(--pri);border-color:rgba(228,87,46,.4);transform:translateY(-2px)}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px)}
  .reveal.in-view{
    opacity:1;transform:none;
    transition:opacity 400ms cubic-bezier(.2,.7,.3,1),transform 400ms cubic-bezier(.2,.7,.3,1);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1100px){
    .main-nav{display:none}
    .nav-toggle{display:flex;align-items:center;justify-content:center}
    .header-actions .btn-primary{display:none}
    .header-inner{justify-content:space-between}
  }
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .steps{grid-template-columns:repeat(2,1fr)}
    .feature{grid-template-columns:1fr;gap:30px}
    .faq-wrap{grid-template-columns:1fr;gap:32px}
    .faq-aside{position:static}
  }
  @media (max-width:768px){
    .shell{padding:0 20px}
    .section{padding:56px 0}
    .class-hero{padding:38px 0 40px}
    .card-grid{grid-template-columns:1fr}
    .stat-row{grid-template-columns:1fr}
    .stat-cell{border-right:0;border-bottom:1px solid var(--line)}
    .stat-cell:last-child{border-bottom:0}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    .cta-band{padding:52px 0}
    .hero-meta{gap:22px}
    .faq-a p{padding-right:0}
  }
  @media (max-width:520px){
    .steps{grid-template-columns:1fr}
    .step-line{display:none}
    .hero-meta{flex-direction:column;gap:14px}
    .btn{width:100%}
    .cta-actions{width:100%}
    .header-actions .btn{width:auto}
    .footer-grid{grid-template-columns:1fr}
    .card-title{padding-right:0;margin-top:22px}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{
      animation-duration:.001ms !important;animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
    }
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category3 */
:root{
  --c-primary:#E4572E;
  --c-primary-dark:#B93C18;
  --c-ink:#103B36;
  --c-mint:#2FBFA0;
  --c-title:#14161A;
  --c-text:#5A6068;
  --c-muted:#9AA0A6;
  --c-line:#E6E2DA;
  --c-bg:#F7F5F0;
  --c-card:#FFFFFF;
  --c-inverse:#F2F0EA;
  --radius:6px;
  --radius-lg:10px;
  --sh-1:0 1px 2px rgba(20,22,26,.04);
  --sh-2:0 8px 24px rgba(20,22,26,.08);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--c-title);letter-spacing:-0.015em;font-weight:800;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-title);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.shell{width:100%;max-width:var(--container,1200px);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.h2{font-size:clamp(24px,3vw,36px);font-weight:800;position:relative;padding-left:16px;}
.h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;background:var(--c-primary);border-radius:2px;}
.h3{font-size:20px;font-weight:700;}
.section-sub{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:720px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--c-primary);font-weight:700;font-family:var(--font-mono);}
.lead{font-size:17px;color:var(--c-text);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 4px 16px rgba(20,22,26,.05);}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:8px;background:var(--c-ink);
  position:relative;flex-shrink:0;
}
.logo-mark::before{
  content:"";position:absolute;inset:9px;
  background:
    linear-gradient(var(--c-inverse),var(--c-inverse)) 0 0/8px 2px no-repeat,
    linear-gradient(var(--c-inverse),var(--c-inverse)) 0 6px/8px 2px no-repeat,
    linear-gradient(var(--c-inverse),var(--c-inverse)) 0 12px/8px 2px no-repeat;
  opacity:.85;
}
.logo-mark::after{
  content:"";position:absolute;right:5px;top:5px;width:7px;height:7px;border-radius:50%;
  background:var(--c-mint);
}
.logo-text{display:flex;align-items:baseline;gap:6px;font-style:normal;}
.logo-main{font-style:normal;font-size:19px;font-weight:900;color:var(--c-title);letter-spacing:-.02em;}
.logo-sub{font-style:normal;font-size:12px;font-weight:600;color:var(--c-muted);letter-spacing:.02em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 12px;border-radius:var(--radius);
  font-size:15px;font-weight:600;color:var(--c-text);
}
.nav-link:hover{background:#F3F0E9;color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--c-ink);border:1px solid var(--c-ink);}
.btn-ghost:hover{background:rgba(16,59,54,.08);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--c-primary);
}
.btn-link span{transition:transform .18s ease;}
.btn-link:hover span{transform:translateX(3px);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius);
  border:1px solid var(--c-line);align-items:center;justify-content:center;
}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--c-title);position:relative;}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-title);
}
.nav-toggle i::before{top:-6px;}
.nav-toggle i::after{top:6px;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,26,.42);opacity:0;pointer-events:none;
  transition:opacity .24s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);z-index:80;
  background:#fff;padding:24px 22px 32px;overflow-y:auto;
  transform:translateX(16px);opacity:0;pointer-events:none;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),opacity .24s ease;
  display:flex;flex-direction:column;gap:8px;
  box-shadow:-12px 0 32px rgba(20,22,26,.12);
}
.drawer.is-open{transform:translateX(0);opacity:1;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.drawer-close{width:36px;height:36px;border-radius:var(--radius);border:1px solid var(--c-line);font-size:18px;color:var(--c-text);}
.drawer-link{
  padding:13px 12px;border-radius:var(--radius);font-size:16px;font-weight:600;color:var(--c-title);
  border-bottom:1px solid var(--c-line);
}
.drawer-link:hover{background:#F3F0E9;color:var(--c-primary);}
.drawer-link.is-active{color:var(--c-primary);}
.drawer-foot{margin-top:auto;padding-top:22px;display:flex;flex-direction:column;gap:12px;}
.drawer-meta{font-size:13px;color:var(--c-muted);line-height:1.7;}

/* ============ 分类 Hero ============ */
.page-hero{
  background:var(--c-ink);color:var(--c-inverse);
  position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.18;pointer-events:none;
}
.page-hero .shell{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:48px;align-items:center;padding:56px 0 60px;}
.hero-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,240,234,.7);margin-bottom:18px;}
.hero-crumb a:hover{color:#fff;}
.hero-crumb .sep{opacity:.45;}
.hero-crumb .now{color:var(--c-mint);}
.page-hero h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);font-weight:900;line-height:1.22;letter-spacing:-.02em;
}
.page-hero h1 em{font-style:normal;color:var(--c-mint);}
.hero-desc{margin-top:16px;font-size:16px;color:rgba(242,240,234,.82);max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag-pill{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:4px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  border:1px solid rgba(242,240,234,.26);color:rgba(242,240,234,.86);
}
.tag-pill.mint{border-color:rgba(47,191,160,.55);color:var(--c-mint);}
.hero-media{
  position:relative;border-radius:8px;overflow:hidden;border:1px solid rgba(242,240,234,.18);
  box-shadow:0 12px 32px rgba(0,0,0,.22);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media .media-cap{
  position:absolute;left:14px;bottom:14px;
  background:rgba(16,59,54,.82);border:1px solid rgba(47,191,160,.5);border-radius:4px;
  padding:5px 10px;font-size:12px;color:var(--c-mint);font-family:var(--font-mono);letter-spacing:.06em;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:26px;border-top:1px solid rgba(242,240,234,.16);}
.hero-stat .num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.hero-stat .lbl{font-size:12px;letter-spacing:.14em;color:rgba(242,240,234,.62);font-family:var(--font-mono);}

/* ============ 分段控件 ============ */
.seg-bar{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:18px 0;border-bottom:1px solid var(--c-line);margin-bottom:36px;
}
.segmented{display:inline-flex;background:#EFEBE2;border-radius:var(--radius);padding:4px;gap:4px;}
.seg-btn{
  padding:7px 16px;border-radius:4px;font-size:14px;font-weight:600;color:var(--c-text);
  font-family:var(--font-mono);letter-spacing:.02em;transition:background-color .18s ease,color .18s ease;
}
.seg-btn:hover{color:var(--c-primary);}
.seg-btn.is-active{background:var(--c-ink);color:#fff;}
.seg-note{margin-left:auto;font-size:13px;color:var(--c-muted);}

/* ============ 时间轴 + 摘要列表 ============ */
.notice-layout{display:grid;grid-template-columns:330px 1fr;gap:56px;align-items:start;}
.timeline{position:relative;}
.tl-item{display:flex;gap:16px;padding-bottom:30px;position:relative;}
.tl-item:last-child{padding-bottom:0;}
.tl-rail{position:relative;width:14px;flex-shrink:0;display:flex;justify-content:center;}
.tl-rail::before{
  content:"";position:absolute;top:6px;bottom:-30px;width:1px;background:var(--c-line);
}
.tl-item:last-child .tl-rail::before{display:none;}
.tl-dot{
  width:11px;height:11px;border-radius:50%;background:var(--c-mint);
  border:2px solid #fff;box-shadow:0 0 0 1px rgba(47,191,160,.5);
  margin-top:5px;position:relative;z-index:2;
}
.tl-item.is-current .tl-dot{background:var(--c-primary);box-shadow:0 0 0 1px rgba(228,87,46,.5);}
.tl-body{flex:1;}
.tl-date{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--c-muted);
  display:block;margin-bottom:4px;
}
.tl-title{font-size:16px;font-weight:700;color:var(--c-title);line-height:1.5;}
.tl-item.is-current .tl-title{color:var(--c-primary);}
.tl-meta{margin-top:6px;font-size:13px;color:var(--c-muted);}

.notice-list{border-top:1px solid var(--c-line);}
.notice-row{
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:22px 14px;border-bottom:1px solid var(--c-line);
  transition:background-color .18s ease,padding-left .18s ease;
}
.notice-row:hover{background:rgba(20,22,26,.04);padding-left:18px;}
.notice-row .row-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px;}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:4px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
}
.badge-ink{border:1px solid rgba(16,59,54,.45);color:var(--c-ink);}
.badge-primary{border:1px solid rgba(228,87,46,.5);color:var(--c-primary);}
.badge-mint{border:1px solid rgba(47,191,160,.6);color:#1F8C76;}
.notice-row h3{font-size:17px;font-weight:700;line-height:1.5;}
.notice-row .row-desc{margin-top:6px;font-size:14px;color:var(--c-text);max-width:720px;}
.row-side{display:flex;align-items:center;gap:16px;}
.row-date{font-family:var(--font-mono);font-size:13px;color:var(--c-muted);white-space:nowrap;}
.row-arrow{
  width:28px;height:28px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-muted);font-size:14px;
  transition:transform .18s ease,border-color .18s ease,color .18s ease;
}
.notice-row:hover .row-arrow{border-color:rgba(228,87,46,.4);color:var(--c-primary);transform:translateX(3px);}

/* ============ 卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(228,87,46,.25);}
.card h3{font-size:18px;font-weight:700;}
.card p{font-size:14.5px;color:var(--c-text);}
.card-list{margin-top:2px;display:flex;flex-direction:column;gap:8px;}
.card-list li{font-size:14px;color:var(--c-text);padding-left:16px;position:relative;}
.card-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--c-mint);
}
.card-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--c-line);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-num{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-muted);
}

/* ============ 数据条 ============ */
.stat-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:48px 0;}
.stat-item{position:relative;padding-left:18px;}
.stat-item::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--c-mint);}
.stat-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--c-title);letter-spacing:-.02em;}
.stat-num small{font-size:14px;font-weight:600;color:var(--c-muted);margin-left:4px;}
.stat-lbl{font-size:14px;color:var(--c-text);margin-top:2px;}

/* ============ 订阅表单 ============ */
.apply-band{background:var(--c-ink);color:var(--c-inverse);}
.apply-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:84px 0;}
.apply-band h2{color:#fff;font-size:clamp(24px,3vw,34px);font-weight:800;padding-left:16px;position:relative;}
.apply-band h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;background:var(--c-primary);border-radius:2px;}
.apply-band p{color:rgba(242,240,234,.8);margin-top:14px;font-size:15.5px;}
.apply-points{display:flex;flex-direction:column;gap:12px;margin-top:26px;}
.apply-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(242,240,234,.86);}
.apply-points li i{width:6px;height:6px;border-radius:50%;background:var(--c-mint);margin-top:11px;flex-shrink:0;}
.form-card{
  background:#fff;border-radius:var(--radius-lg);padding:30px;box-shadow:0 16px 40px rgba(0,0,0,.18);
}
.form-card .form-title{font-size:18px;font-weight:800;color:var(--c-title);}
.form-card .form-hint{font-size:13px;color:var(--c-muted);margin-top:6px;margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-title);margin-bottom:6px;}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius);
  border:1px solid var(--c-line);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(228,87,46,.12);
}
.field.has-error input{border-color:var(--c-primary);color:var(--c-primary);}
.field .err{display:none;font-size:12.5px;color:var(--c-primary);margin-top:5px;}
.field.has-error .err{display:block;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--c-text);margin:6px 0 20px;}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-primary);}
.form-card .btn{width:100%;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:56px;align-items:start;}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--c-text);}
.faq-aside .contact-box{
  margin-top:26px;border:1px solid var(--c-line);border-radius:var(--radius);background:#fff;padding:20px;
}
.faq-aside .contact-box b{color:var(--c-title);}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;text-align:left;font-size:16.5px;font-weight:700;color:var(--c-title);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q .plus{
  width:24px;height:24px;flex-shrink:0;position:relative;
  transition:transform .28s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:11px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:11px;width:2px;transition:opacity .2s ease;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--c-text);max-width:760px;}

/* ============ 底部 CTA 带 ============ */
.cta-band{
  background:#fff;border-top:1px solid var(--c-line);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--c-text);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--c-inverse);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(242,240,234,.12);
}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:rgba(242,240,234,.6);}
.footer-desc{margin-top:14px;font-size:14px;color:rgba(242,240,234,.72);max-width:260px;}
.footer-title{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--c-mint);font-weight:700;margin-bottom:16px;font-family:var(--font-mono);}
.footer-link{display:block;font-size:14.5px;color:rgba(242,240,234,.8);padding:5px 0;transition:color .18s ease,transform .18s ease;}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-contact{font-size:14px;color:rgba(242,240,234,.78);line-height:1.9;}
.footer-contact b{color:#fff;font-weight:600;}
.qr-box{
  margin-top:16px;width:96px;height:96px;border-radius:var(--radius);
  border:1px dashed rgba(242,240,234,.32);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(242,240,234,.5);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 28px;font-size:13px;color:rgba(242,240,234,.6);font-family:var(--font-mono);
}

/* 返回顶部 */
.back-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,color .18s ease,border-color .18s ease;
  z-index:55;
}
.back-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.back-top:hover{color:var(--c-primary);border-color:rgba(228,87,46,.4);}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .main-nav{gap:0;}
  .nav-link{padding:9px 9px;font-size:14.5px;}
}
@media (max-width:1024px){
  .shell{padding:0 24px;}
  .section{padding:72px 0;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 48px;}
  .notice-layout{grid-template-columns:1fr;gap:36px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding:40px 0;}
  .apply-grid{grid-template-columns:1fr;gap:36px;padding:64px 0;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .section{padding:60px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .hero-stats{gap:24px;padding-top:20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0;}
  .seg-note{margin-left:0;width:100%;}
  .notice-row{grid-template-columns:1fr;gap:10px;}
  .row-side{justify-content:space-between;}
}
@media (max-width:520px){
  .shell{padding:0 20px;}
  .card-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .logo-sub{display:none;}
  .hero-stat .num{font-size:19px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .nav-actions .btn{width:auto;}
  .form-card{padding:22px;}
}

/* roulang page: category4 */
:root{
    --brand:#E4572E;
    --brand-dark:#B93C18;
    --ink:#103B36;
    --mint:#2FBFA0;
    --text:#14161A;
    --gray:#5A6068;
    --muted:#9AA0A6;
    --line:#E6E2DA;
    --bg:#F7F5F0;
    --card:#FFFFFF;
    --inverse:#F2F0EA;
    --radius:6px;
    --radius-lg:10px;
    --shadow:0 1px 2px rgba(20,22,26,.04);
    --shadow-hover:0 8px 24px rgba(20,22,26,.08);
    --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(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  b,strong{font-weight:700;}

  .container,.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .mono{font-family:"SF Mono",ui-monospace,Menlo,Consolas,"Roboto Mono",monospace;font-variant-numeric:tabular-nums;}

  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius);
    font-size:15px;font-weight:700;letter-spacing:.01em;
    border:1px solid transparent;background:none;cursor:pointer;
    transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(185,60,24,.22);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
  .btn-ghost:hover{background:rgba(16,59,54,.08);}
  .btn-light{background:var(--inverse);color:var(--ink);}
  .btn-light:hover{background:#fff;transform:translateY(-1px);}
  .btn-outline-light{border-color:rgba(242,240,234,.46);color:var(--inverse);}
  .btn-outline-light:hover{background:rgba(242,240,234,.12);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;font-weight:700;}
  .btn:disabled{opacity:.4;pointer-events:none;}

  .text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:15px;}
  .text-link .arrow{transition:transform .18s var(--ease);}
  .text-link:hover .arrow{transform:translateX(3px);}
  .text-link:hover{color:var(--brand-dark);}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid transparent;
    transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,22,26,.06);}
  .header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}

  .logo{display:flex;align-items:center;gap:11px;flex-shrink:0;}
  .logo-mark{
    width:34px;height:34px;border-radius:7px;background:var(--ink);
    display:grid;grid-template-columns:repeat(2,1fr);gap:3px;padding:8px;flex-shrink:0;
  }
  .logo-mark i{background:rgba(242,240,234,.85);border-radius:1.5px;display:block;}
  .logo-mark i:last-child{background:var(--mint);}
  .logo-text{display:flex;align-items:baseline;gap:6px;}
  .logo-text em{font-style:normal;}
  .logo-main{font-size:19px;font-weight:900;letter-spacing:-.01em;color:var(--text);}
  .logo-sub{font-size:13px;font-weight:600;color:var(--gray);}

  .main-nav{display:flex;align-items:center;gap:2px;}
  .nav-link{
    position:relative;display:inline-block;
    padding:8px 12px;border-radius:6px;
    font-size:14.5px;font-weight:600;color:var(--gray);
    transition:background-color .18s var(--ease),color .18s var(--ease);
  }
  .nav-link:hover{background:#F4F1EA;color:var(--brand);}
  .nav-link.is-active{color:var(--text);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);
  }

  .header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:6px;border:1px solid var(--line);
    background:#fff;cursor:pointer;padding:0;place-items:center;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:3px auto;transition:transform .2s var(--ease),opacity .2s var(--ease);}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

  /* ============ 抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(20,22,26,.45);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
    background:#fff;padding:24px 22px 32px;overflow-y:auto;
    transform:translateX(100%);transition:transform .24s var(--ease);
    display:flex;flex-direction:column;gap:22px;
  }
  .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-title{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--muted);}
  .drawer-close{width:34px;height:34px;border-radius:6px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:16px;line-height:1;}
  .drawer-nav{display:flex;flex-direction:column;gap:2px;}
  .drawer-link{padding:11px 12px;border-radius:6px;font-size:15px;font-weight:600;color:var(--gray);}
  .drawer-link:hover,.drawer-link.is-active{background:#F4F1EA;color:var(--brand);}
  .drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--gray);line-height:1.9;}

  /* ============ 分类 Hero ============ */
  .cat-hero{padding:66px 0 54px;position:relative;overflow:hidden;}
  .cat-hero::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--line);
  }
  .crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding:14px 0 22px;flex-wrap:wrap;}
  .crumb a{color:var(--gray);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:#C9C3B8;}
  .crumb .now{color:var(--muted);}

  .status-bar{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--gray);
    border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;margin-bottom:22px;
  }
  .status-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;}

  .hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;}
  .hero-title{
    font-size:clamp(30px,4vw,46px);
    font-weight:900;line-height:1.18;letter-spacing:-.02em;color:var(--text);
    margin-bottom:18px;
  }
  .hero-title .hl{color:var(--brand);}
  .hero-sub{font-size:17px;color:var(--gray);max-width:560px;margin-bottom:28px;}

  .search-panel{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:16px;box-shadow:var(--shadow);max-width:620px;
  }
  .search-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
  .search-field{
    flex:1 1 260px;display:flex;align-items:center;gap:10px;
    height:48px;border:1px solid var(--line);border-radius:6px;padding:0 14px;background:#FCFBF8;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
  }
  .search-field:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(228,87,46,.12);}
  .search-field input{flex:1;border:0;background:transparent;outline:none;font-size:15px;}
  .search-field input::placeholder{color:var(--muted);}
  .search-hint{margin-top:12px;font-size:13px;color:var(--muted);}

  .hero-media{position:relative;}
  .hero-media img{
    width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:8px;
    border:1px solid var(--line);box-shadow:var(--shadow-hover);
  }
  .hero-media::after{
    content:"";position:absolute;inset:0;border-radius:8px;pointer-events:none;
    background:linear-gradient(to top,rgba(16,59,54,.24),rgba(16,59,54,0) 58%);
  }
  .media-badge{
    position:absolute;left:16px;bottom:16px;z-index:2;
    background:var(--mint);color:#062A25;font-size:12px;font-weight:800;letter-spacing:.06em;
    border-radius:4px;padding:5px 10px;
  }

  /* ============ 通用板块 ============ */
  .section{padding:88px 0;}
  .section.tight{padding:64px 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px;flex-wrap:wrap;}
  .section-title{
    font-size:clamp(23px,2.6vw,32px);font-weight:800;letter-spacing:-.015em;line-height:1.3;color:var(--text);
    position:relative;padding-left:16px;
  }
  .section-title::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand);
  }
  .section-desc{margin-top:12px;font-size:15.5px;color:var(--gray);max-width:640px;}
  .eyebrow{font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;margin-bottom:10px;}

  /* ============ 快捷检索标签 ============ */
  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .chip{
    display:inline-flex;align-items:center;gap:8px;
    height:34px;padding:0 14px;border-radius:6px;
    border:1px solid var(--line);background:#fff;color:var(--gray);
    font-size:13.5px;font-weight:600;transition:all .18s var(--ease);cursor:pointer;
  }
  .chip:hover{border-color:rgba(228,87,46,.35);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}

  /* ============ 步骤条 ============ */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:8px;}
  .step{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 24px 24px;box-shadow:var(--shadow);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(228,87,46,.25);}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:32px;height:32px;border-radius:50%;border:1px solid var(--mint);color:var(--ink);
    font-size:13px;font-weight:800;margin-bottom:16px;
  }
  .step h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text);}
  .step p{font-size:14.5px;color:var(--gray);}
  .step-line{position:absolute;right:-14px;top:42px;width:28px;height:1px;background:var(--line);}
  .steps .step:last-child .step-line{display:none;}

  /* ============ 双列问答 ============ */
  .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;}
  .faq-col-title{
    font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--ink);
    padding-bottom:14px;border-bottom:2px solid var(--line);margin-bottom:8px;
    display:flex;align-items:center;gap:10px;
  }
  .faq-col-title .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);flex-shrink:0;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
    padding:20px 2px;background:none;border:0;text-align:left;cursor:pointer;
    font-size:16px;font-weight:700;line-height:1.6;color:var(--text);
    transition:color .18s var(--ease);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-icon{
    position:relative;width:18px;height:18px;flex-shrink:0;margin-top:5px;
    transition:transform .28s var(--ease);
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--brand);border-radius:2px;
  }
  .faq-icon::before{left:0;right:0;top:8px;height:2px;}
  .faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{height:0;overflow:hidden;transition:height .28s var(--ease);}
  .faq-a-inner{padding:0 2px 22px;font-size:15px;color:var(--gray);max-width:96%;}

  /* ============ 现象卡片 ============ */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
  .case-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    box-shadow:var(--shadow);display:flex;flex-direction:column;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(228,87,46,.25);}
  .case-thumb{position:relative;overflow:hidden;}
  .case-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s var(--ease);}
  .case-card:hover .case-thumb img{transform:scale(1.03);}
  .case-tag{
    position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--ink);
    border:1px solid var(--line);border-radius:4px;font-size:12px;font-weight:700;letter-spacing:.06em;padding:3px 8px;
  }
  .case-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .case-body h3{font-size:17px;font-weight:700;color:var(--text);}
  .case-body p{font-size:14.5px;color:var(--gray);}
  .case-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}

  /* ============ 人工协助 ============ */
  .assist{background:var(--ink);color:var(--inverse);border-radius:var(--radius-lg);padding:52px 48px;position:relative;overflow:hidden;}
  .assist::after{
    content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
    border:1px solid rgba(47,191,160,.28);pointer-events:none;
  }
  .assist-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;position:relative;z-index:1;}
  .assist h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.01em;color:var(--inverse);line-height:1.35;margin-bottom:14px;}
  .assist p{font-size:15px;color:rgba(242,240,234,.76);}
  .assist-list{display:grid;gap:14px;margin-top:24px;}
  .assist-item{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(242,240,234,.86);}
  .assist-item .mark{width:6px;height:6px;border-radius:50%;background:var(--mint);margin-top:11px;flex-shrink:0;}
  .assist-card{
    background:rgba(242,240,234,.06);border:1px solid rgba(242,240,234,.18);
    border-radius:var(--radius-lg);padding:26px 24px;
  }
  .assist-card .row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid rgba(242,240,234,.12);font-size:14.5px;}
  .assist-card .row:last-of-type{border-bottom:0;}
  .assist-card .row span:first-child{color:rgba(242,240,234,.62);}
  .assist-card .row span:last-child{color:var(--inverse);font-weight:700;}
  .assist-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap;}

  /* ============ 返回首页 CTA 带 ============ */
  .band{margin-top:8px;}
  .band-inner{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
    box-shadow:var(--shadow);
  }
  .band-inner h2{font-size:20px;font-weight:800;color:var(--text);margin-bottom:6px;}
  .band-inner p{font-size:14.5px;color:var(--gray);}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);color:var(--inverse);margin-top:96px;}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
    padding:64px 0 44px;border-bottom:1px solid rgba(242,240,234,.12);
  }
  .footer-brand .logo-text{gap:6px;}
  .footer-brand .logo-main{color:var(--inverse);font-size:18px;}
  .footer-brand .logo-sub{color:rgba(242,240,234,.7);}
  .footer-desc{margin-top:16px;font-size:14px;color:rgba(242,240,234,.7);max-width:280px;line-height:1.8;}
  .footer-title{font-size:13px;font-weight:800;letter-spacing:.14em;color:rgba(242,240,234,.55);margin-bottom:16px;}
  .footer-link{display:block;font-size:14.5px;color:rgba(242,240,234,.82);padding:4px 0;transition:color .18s var(--ease),transform .18s var(--ease);}
  .footer-link:hover{color:var(--mint);transform:translateX(3px);}
  .footer-contact{font-size:14px;color:rgba(242,240,234,.78);line-height:2;}
  .footer-contact b{color:var(--inverse);}
  .qr-box{
    margin-top:16px;width:96px;height:96px;border-radius:6px;
    border:1px dashed rgba(242,240,234,.35);display:grid;place-items:center;
    font-size:12px;color:rgba(242,240,234,.6);text-align:center;
  }
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 30px;font-size:13px;color:rgba(242,240,234,.58);
  }

  /* ============ 返回顶部 ============ */
  .to-top{
    position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;
    border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;
    display:grid;place-items:center;font-size:16px;font-weight:700;
    box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
    z-index:55;
  }
  .to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
  .to-top:hover{color:var(--brand);border-color:rgba(228,87,46,.4);}

  /* ============ 动效 ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .main-nav{display:none;}
    .nav-toggle{display:grid;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-media{max-width:620px;}
    .assist-grid{grid-template-columns:1fr;gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
    .steps{grid-template-columns:1fr;}
    .step-line{display:none;}
    .case-grid{grid-template-columns:repeat(2,1fr);}
    .section{padding:70px 0;}
  }
  @media (max-width:768px){
    .container,.shell{padding:0 20px;}
    .header-cta{display:none;}
    .cat-hero{padding:44px 0 40px;}
    .faq-grid{grid-template-columns:1fr;gap:32px;}
    .case-grid{grid-template-columns:1fr;}
    .assist{padding:34px 24px;}
    .band-inner{padding:26px 22px;}
    .section{padding:56px 0;}
    .section-head{margin-bottom:28px;}
    .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}
    .footer-desc{max-width:100%;}
  }
  @media (max-width:520px){
    .hero-sub{font-size:15.5px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .to-top{right:16px;bottom:16px;}
    .assist-actions .btn{width:100%;}
    .band-inner .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
    .reveal{opacity:1;transform:none;}
  }