/* roulang page: index */
:root{
  --brand:#0FBE8F;
  --brand-dark:#0A8F6C;
  --brand-soft:#E6FAF3;
  --accent:#FF7A2F;
  --accent-dark:#E8641C;
  --purple:#7A5CFF;
  --ink:#0E1417;
  --text:#1B2428;
  --muted:#55666C;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --ok:#12A150;
  --err:#E5484D;
  --warn:#D98600;
  --r-card:12px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 1px 2px rgba(14,20,23,.06),0 8px 24px rgba(14,20,23,.08);
  --shadow-hover:0 12px 28px rgba(15,190,143,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{line-height:1.35}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#fff;height:36px;display:flex;align-items:center;font-size:13px}
.topbar-track{display:flex;align-items:center;gap:22px;width:100%;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.topbar-track::-webkit-scrollbar{display:none}
.topbar-domain{color:rgba(255,255,255,.7);letter-spacing:.02em}
.topbar-note{color:rgba(255,255,255,.76)}
.topbar-note b{color:var(--brand);font-weight:600}
.topbar-link{margin-left:auto;color:var(--accent);font-weight:600;transition:color .18s}
.topbar-link:hover{color:#fff}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.nav-main{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.2px;white-space:nowrap}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);color:#0E1417;display:grid;place-items:center;font-size:14px;font-weight:800}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 12px;font-size:15px;color:var(--muted);transition:color .18s}
.nav-links a:hover{color:var(--brand-dark)}
.nav-links a.active{color:var(--brand-dark);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;background:var(--brand)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;padding:18px 20px 32px;overflow-y:auto;transform:translateX(101%);transition:transform .28s ease}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:16px;color:var(--text)}
.drawer-nav a.active{color:var(--brand-dark);font-weight:600}
.drawer-cta{margin-top:22px;width:100%}
.drawer-info{margin-top:20px;font-size:13px;color:var(--muted);line-height:1.9}
.drawer-info span{display:block}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s}
.btn-primary{background:var(--brand);color:#0E1417}
.btn-primary:hover{background:#14D29E;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,190,143,.28)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.28)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.5;pointer-events:none;transform:none}
.text-link{color:var(--brand-dark);font-weight:600;font-size:14px;white-space:nowrap;transition:color .18s}
.text-link:hover{color:var(--accent)}

/* ---------- Hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--line);padding:64px 0 72px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy{max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:600}
.hero h1{margin-top:18px;font-size:44px;font-weight:800;letter-spacing:-.5px;line-height:1.28}
.hero-sub{margin-top:16px;font-size:17px;color:var(--muted);line-height:1.8}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-metrics{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px}
.hero-metrics li{display:flex;flex-direction:column;gap:2px;padding:12px 18px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg);min-width:132px}
.hero-metrics b{font-size:22px;font-weight:800;color:var(--brand-dark);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-metrics span{font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-card);background:#EEF2F1}
.float-card{position:absolute;left:-20px;bottom:-22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:14px 18px;min-width:206px}
.float-row{display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:13px;color:var(--muted)}
.float-row + .float-row{margin-top:8px;padding-top:8px;border-top:1px solid var(--line)}
.float-row b{color:var(--text);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- 板块 ---------- */
.section{padding:80px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{position:relative;padding-left:16px;font-size:32px;font-weight:700;letter-spacing:-.3px}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand)}
.section-desc{margin-top:12px;color:var(--muted);font-size:15px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- 折叠问答 ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:rgba(15,190,143,.45);box-shadow:var(--shadow)}
.faq-item summary{position:relative;display:flex;align-items:center;gap:12px;min-height:56px;padding:14px 52px 14px 22px;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--brand);flex:0 0 auto}
.faq-item summary::after{content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .2s ease}
.faq-item[open] summary{color:var(--brand-dark)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand-dark)}
.faq-body{padding:0 22px 20px 42px;color:var(--muted);font-size:15px;line-height:1.85;background:#FBFCFC;border-top:1px solid var(--line);padding-top:16px}

/* ---------- 方案卡片 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,190,143,.4)}
.plan-card-lg{grid-column:span 8;grid-row:span 2;flex-direction:row;gap:24px;padding:28px}
.plan-card-sm{grid-column:span 4}
.plan-mark{width:56px;height:56px;border-radius:14px;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center;font-size:20px;font-weight:800;flex:0 0 auto}
.plan-mark.orange{background:#FFF1E8;color:var(--accent-dark)}
.plan-mark.purple{background:#F0EDFF;color:var(--purple)}
.plan-card h3{font-size:22px;font-weight:600;margin-bottom:10px}
.plan-card-sm h3{font-size:19px;margin-top:18px}
.plan-card p{color:var(--muted);font-size:15px;line-height:1.8}
.plan-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.plan-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);line-height:1.75}
.plan-list li::before{content:"";position:absolute;left:0;top:.65em;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.plan-card-foot{margin-top:auto;padding-top:18px}

/* ---------- 数据条 ---------- */
.stats-bar{background:var(--ink);color:#fff;padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:0 26px;border-right:1px solid rgba(255,255,255,.08)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:34px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.72)}
.stats-note{margin-top:26px;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,190,143,.4)}
.news-card-lg{grid-column:1 / -1;flex-direction:row}
.news-thumb{display:block;position:relative;overflow:hidden;background:#EEF2F1}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-card-lg .news-thumb{flex:0 0 340px}
.news-card-lg .news-thumb img{height:100%;aspect-ratio:auto;min-height:220px}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:var(--r-badge);font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark)}
.badge-latest{background:var(--accent);color:#fff}
.badge-version{background:var(--purple);color:#fff}
.news-card h3{font-size:19px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3 a:hover{color:var(--brand-dark)}
.news-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.empty-state{min-height:260px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px}
.empty-mark{width:52px;height:52px;border-radius:14px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand-dark);font-size:20px;font-weight:800}
.empty-state p{color:var(--muted);font-size:15px}

/* ---------- 使用流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow)}
.step-num{width:38px;height:38px;border-radius:50%;background:var(--brand);color:#0E1417;display:grid;place-items:center;font-weight:800;font-variant-numeric:tabular-nums}
.step h3{margin-top:16px;font-size:18px;font-weight:600}
.step p{margin-top:8px;color:var(--muted);font-size:14.5px;line-height:1.8}
.step:not(:last-child)::after{content:"";position:absolute;right:-16px;top:42px;width:16px;height:2px;background:var(--line)}

/* ---------- 表单 ---------- */
.form-panel{display:grid;grid-template-columns:5fr 7fr;gap:40px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:36px;box-shadow:var(--shadow)}
.form-intro h2{position:relative;padding-left:16px;font-size:28px;font-weight:700}
.form-intro h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand)}
.form-intro p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.85}
.form-points{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.form-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--muted)}
.form-points li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--brand-soft);border:1px solid var(--brand)}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;padding:0 14px;height:44px;font-size:15px;transition:border-color .18s,background .18s,box-shadow .18s}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 3px rgba(15,190,143,.14)}
.field input::placeholder,.field textarea::placeholder{color:#9AA7A4}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7}
.check input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand)}
.form-hint{font-size:13px;color:var(--muted)}
.privacy-bar{margin-top:18px;background:#EFF3F2;border-radius:var(--r-btn);padding:16px 20px;font-size:13px;color:var(--muted);line-height:1.85;display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}
.privacy-bar a{color:var(--brand-dark);font-weight:600}
.privacy-bar a:hover{color:var(--accent)}

/* ---------- 悬浮按钮 / 弹层 ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70;height:52px;padding:0 26px;border:0;border-radius:999px;background:var(--accent);color:#fff;font-size:15px;font-weight:700;cursor:pointer;box-shadow:0 12px 28px rgba(255,122,47,.32);transition:transform .18s,background .18s}
.float-cta:hover{background:var(--accent-dark);transform:translateY(-2px)}
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(14,20,23,.55)}
.modal-card{position:relative;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;background:#fff;border-radius:16px;padding:30px;box-shadow:0 24px 60px rgba(14,20,23,.28)}
.modal-close{position:absolute;right:16px;top:16px;width:36px;height:36px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;font-size:20px;line-height:1;cursor:pointer}
.modal-close:hover{border-color:var(--brand);color:var(--brand-dark)}
.modal-card h3{font-size:22px;font-weight:700}
.modal-card > p{margin-top:10px;color:var(--muted);font-size:14.5px}
.modal-form{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.modal-form .field-full{grid-column:1 / -1}
.modal-privacy{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.8;padding-top:14px;border-top:1px solid var(--line)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.76);margin-top:0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-domain{margin-top:14px;font-size:13px;color:rgba(255,255,255,.45);letter-spacing:.02em}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom-inner .sep{margin-left:auto}
.to-top{color:var(--brand);font-weight:600;transition:color .18s}
.to-top:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .plan-card-lg{grid-column:span 12;grid-row:auto;flex-direction:row}
  .plan-card-sm{grid-column:span 6}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .hero{padding:52px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy{max-width:none}
  .float-card{left:16px;bottom:16px}
  .form-panel{grid-template-columns:1fr;gap:30px;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2)::after{display:none}
}
@media (max-width:992px){
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-cta{margin-left:0}
  .news-card-lg{flex-direction:column}
  .news-card-lg .news-thumb{flex:none}
  .news-card-lg .news-thumb img{aspect-ratio:16/9;min-height:0}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .topbar{font-size:12px}
  .topbar-note{display:none}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-metrics{gap:10px}
  .hero-metrics li{flex:1 1 45%;min-width:0;padding:10px 14px}
  .section-head h2,.form-intro h2{font-size:22px}
  .section-head-row{flex-direction:column;align-items:flex-start}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px 0}
  .stat:nth-child(2){border-right:0}
  .stat{padding:0 16px}
  .news-grid{grid-template-columns:1fr}
  .plan-card-sm{grid-column:span 12}
  .plan-card-lg{flex-direction:column;gap:18px}
  .lead-form{grid-template-columns:1fr}
  .modal-form{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step::after{display:none}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom-inner .sep{margin-left:0;width:100%}
  .float-cta{right:16px;left:16px;bottom:16px;width:auto;height:50px;padding:0 20px}
  .modal{padding:16px}
  .modal-card{padding:24px}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .faq-item summary{font-size:15px;padding-left:18px;padding-right:46px}
  .faq-body{padding-left:18px;padding-right:18px}
  .plan-card,.plan-card-lg,.step,.news-body{padding:20px}
  .form-panel{padding:20px}
}

/* roulang page: article */
:root{
  --c-primary:#0FBE8F;
  --c-primary-dark:#0A8F6C;
  --c-primary-soft:#E6FAF3;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E4631C;
  --c-violet:#7A5CFF;
  --c-ink:#0E1417;
  --c-text:#1B2428;
  --c-text-sub:#55666C;
  --c-border:#E2E8E6;
  --c-bg:#F6F8F7;
  --c-card:#FFFFFF;
  --c-success:#12A150;
  --c-error:#E5484D;
  --c-warn:#D98600;
  --radius-card:12px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(14,20,23,.06),0 8px 24px rgba(14,20,23,.08);
  --shadow-hover:0 12px 28px rgba(15,190,143,.16);
  --space-section:80px;
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-dark);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:var(--c-ink);}
.btn-primary:hover{background:#20d09d;color:var(--c-ink);transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,190,143,.28);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.28);}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;
}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}

/* 顶部信息条 */
.topbar{background:var(--c-ink);color:rgba(255,255,255,.86);font-size:13px;}
.topbar-inner{
  display:flex;align-items:center;gap:16px;height:36px;overflow-x:auto;white-space:nowrap;
  scrollbar-width:none;
}
.topbar-inner::-webkit-scrollbar{display:none;}
.topbar-domain{font-weight:600;color:#fff;letter-spacing:.02em;}
.topbar-notice{color:rgba(255,255,255,.7);}
.topbar-link{margin-left:auto;color:var(--c-accent);font-weight:600;}
.topbar-link:hover{color:#ffa170;}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--c-border);
}
.nav-main{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:800;font-size:17px;}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex:0 0 28px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:var(--c-ink);font-size:15px;font-weight:800;
}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;color:var(--c-text);font-size:16px;padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-18px;height:2px;background:transparent;border-radius:2px;
}
.nav-links a:hover{color:var(--c-primary-dark);}
.nav-links a.active{color:var(--c-primary-dark);font-weight:700;}
.nav-links a.active::after{background:var(--c-primary);}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:38px;border:1px solid var(--c-border);border-radius:var(--radius-btn);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;}

/* 面包屑与页头 */
.page-head{padding:28px 0 8px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-sub);
}
.breadcrumb a{color:var(--c-text-sub);}
.breadcrumb a:hover{color:var(--c-primary-dark);}
.breadcrumb .divider{color:#A9B6B2;}
.breadcrumb .current{color:var(--c-text);font-weight:600;}

/* 文章页主体布局 */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:44px;
  align-items:start;
  padding-bottom:var(--space-section);
}
.article-main{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:36px 40px 40px;
  max-width:800px;
}
.article-head{border-bottom:1px solid var(--c-border);padding-bottom:24px;margin-bottom:28px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-badge);
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:12px;font-weight:700;
}
.article-head h1{
  font-size:34px;font-weight:800;letter-spacing:-.5px;margin:16px 0 14px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-text-sub);
}
.article-meta .dot{color:#B9C4C1;}
.article-cover{margin:24px 0 0;}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);background:#EDF1EF;
}
.article-cover figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--c-text-sub);
}

/* 正文排版 */
.article-body{font-size:16px;line-height:1.85;color:var(--c-text);}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;margin:38px 0 18px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:20px;font-weight:700;margin:28px 0 14px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em;}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-primary-dark);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;color:var(--c-text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;border-radius:var(--radius-card);margin:22px 0 8px;background:#EDF1EF;
}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-text-sub);margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:20px 0;
  border:1px solid var(--c-border);border-radius:var(--radius-card);overflow:hidden;
}
.article-body thead th{
  background:#F1F5F3;text-align:left;font-weight:700;color:var(--c-text);
  padding:12px 14px;border-bottom:1px solid var(--c-border);
}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--c-border);color:var(--c-text-sub);}
.article-body tbody tr:nth-child(even){background:#FAFCFB;}
.article-body code{
  background:#F1F5F3;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-primary-dark);
}
.article-body .table-wrap{overflow-x:auto;margin:20px 0;}

/* 空态 */
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:12px;background:#FAFCFB;border:1px dashed var(--c-border);border-radius:var(--radius-card);
  padding:40px 24px;
}
.empty-state h2{font-size:22px;font-weight:700;}
.empty-state p{color:var(--c-text-sub);font-size:15px;margin:0;max-width:460px;}

/* 文末 CTA */
.article-cta{
  margin-top:40px;background:var(--c-ink);color:#fff;border-radius:var(--radius-card);
  padding:30px 32px;display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:18px 18px;
}
.article-cta h2{font-size:22px;font-weight:700;color:#fff;flex:1 1 320px;}
.article-cta p{font-size:13px;color:rgba(255,255,255,.66);margin:6px 0 0;}
.article-cta .cta-text{flex:1 1 320px;}

/* 相关推荐 */
.related{margin-top:44px;}
.related h2{
  font-size:22px;font-weight:700;margin-bottom:20px;padding-left:14px;position:relative;
}
.related h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;background:var(--c-primary);
}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;gap:14px;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-card);padding:14px;box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,190,143,.4);}
.rel-card img{
  width:112px;height:84px;flex:0 0 112px;object-fit:cover;border-radius:10px;background:#EDF1EF;
}
.rel-card .rel-body{min-width:0;}
.rel-card .rel-body h3{
  font-size:16px;font-weight:700;margin:0 0 8px;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card .rel-body span{font-size:13px;color:var(--c-text-sub);}
.rel-card a{color:var(--c-text);}
.rel-card a:hover{color:var(--c-primary-dark);}

/* 返回入口 */
.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;font-size:15px;font-weight:600;
  color:var(--c-primary-dark);border-bottom:1px solid transparent;padding-bottom:2px;
}
.back-link:hover{border-color:var(--c-primary);}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:20px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;}
.side-list{list-style:none;}
.side-list li{padding:10px 0;border-bottom:1px solid var(--c-border);}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{display:block;font-size:14px;color:var(--c-text);line-height:1.6;}
.side-list a:hover{color:var(--c-primary-dark);transform:translateX(2px);transition:transform .18s ease;}
.side-list .tip{font-size:13px;color:var(--c-text-sub);}
.side-note{
  background:var(--c-primary-soft);border:1px solid rgba(15,190,143,.28);
  border-radius:var(--radius-card);padding:18px;font-size:13px;color:var(--c-primary-dark);line-height:1.7;
}
.side-note strong{display:block;font-size:14px;margin-bottom:6px;color:var(--c-primary-dark);}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.78);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding:56px 0 36px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand{color:#fff;font-size:17px;}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.footer-domain{
  font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.02em;margin-top:10px;
}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{padding:18px 0;}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom-inner .sep{flex:1 1 320px;}
.to-top{color:rgba(255,255,255,.72);}
.to-top:hover{color:var(--c-primary);}

/* 移动端抽屉 */
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:80px 20px 24px;margin:0;transform:translateX(105%);
    transition:transform .26s ease;box-shadow:-12px 0 32px rgba(14,20,23,.16);z-index:80;
    overflow-y:auto;
  }
  .nav-links a{
    height:48px;display:flex;align-items:center;font-size:16px;
    border-bottom:1px solid var(--c-border);
  }
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--c-primary-dark);}
  body.nav-open .nav-links{transform:translateX(0);}
  body.nav-open::after{
    content:"";position:fixed;inset:0;background:rgba(14,20,23,.42);z-index:70;
  }
  .nav-main{gap:16px;height:60px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .article-side{position:static;order:2;}
  .article-main{max-width:100%;}
}
@media (max-width:767px){
  :root{--space-section:48px;}
  .container{padding:0 16px;}
  .article-main{padding:22px 18px 26px;}
  .article-head h1{font-size:26px;letter-spacing:-.2px;}
  .article-body{font-size:15px;line-height:1.8;}
  .article-body h2{font-size:21px;margin:30px 0 14px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .rel-card img{width:96px;height:72px;flex:0 0 96px;}
  .article-cta{padding:24px 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:40px 0 26px;}
  .footer-brand{grid-column:1 / -1;}
  .page-head{padding:20px 0 4px;}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr;}
  .topbar-inner{gap:12px;}
  .article-meta{font-size:12px;}
  .rel-card{flex-direction:column;}
  .rel-card img{width:100%;height:auto;aspect-ratio:16/9;flex:none;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0FBE8F;
  --c-primary-dark:#0A8F6C;
  --c-primary-soft:#E6FAF3;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E8651C;
  --c-violet:#7A5CFF;
  --c-ink:#0E1417;
  --c-text:#1B2428;
  --c-muted:#55666C;
  --c-border:#E2E8E6;
  --c-bg:#F6F8F7;
  --c-white:#FFFFFF;
  --c-success:#12A150;
  --c-error:#E5484D;
  --c-warn:#D98600;
  --r-card:12px;
  --r-btn:10px;
  --r-badge:6px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,20,23,.06),0 8px 24px rgba(14,20,23,.08);
  --sh-2:0 12px 28px rgba(15,190,143,.16);
  --sec-space:80px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--c-text);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-text);}
p{margin:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* 顶部信息条 */
.topbar{height:36px;background:var(--c-ink);color:#fff;}
.topbar-inner{
  height:36px;display:flex;align-items:center;gap:20px;
  font-size:13px;white-space:nowrap;overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;
}
.topbar-inner::-webkit-scrollbar{display:none;}
.topbar-domain{color:rgba(255,255,255,.72);letter-spacing:.02em;flex:none;}
.topbar-note{color:rgba(255,255,255,.6);flex:none;}
.topbar-link{margin-left:auto;color:var(--c-accent);flex:none;font-weight:600;}
.topbar-link:hover{color:#FFA46B;}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:90;background:var(--c-white);
  border-bottom:1px solid var(--c-border);
}
.nav-main{height:68px;display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--c-text);flex:none;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex:none;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#04231B;font-size:15px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:16px;color:var(--c-text);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--c-primary-dark);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--c-primary-dark);font-weight:700;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-border);background:var(--c-white);
  border-radius:var(--r-btn);flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:700;padding:0 20px;height:46px;
  transition:all .2s ease;cursor:pointer;
}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.btn-primary{background:var(--c-primary);color:var(--c-ink);}
.btn-primary:hover{background:#1ED09E;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,122,47,.24);}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn:active{transform:translateY(0);}
.btn[disabled]{opacity:.5;pointer-events:none;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,20,23,.5);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:120;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:var(--c-white);
  transform:translateX(100%);transition:transform .28s ease;z-index:130;
  display:flex;flex-direction:column;padding:20px 20px 32px;overflow-y:auto;
}
.drawer.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-radius:10px;border:1px solid var(--c-border);background:var(--c-white);
  font-size:18px;color:var(--c-muted);line-height:1;
}
.drawer-nav a{
  display:flex;align-items:center;height:48px;border-bottom:1px solid var(--c-border);
  font-size:16px;color:var(--c-text);
}
.drawer-nav a.active{color:var(--c-primary-dark);font-weight:700;}
.drawer .btn{margin-top:20px;width:100%;}
.drawer-info{margin-top:22px;font-size:13px;color:var(--c-muted);}

/* 窄 Hero */
.page-hero{
  position:relative;color:#fff;padding:56px 0 48px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;background:rgba(14,20,23,.82);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;opacity:.9;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{font-size:13px;color:rgba(255,255,255,.68);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:rgba(255,255,255,.68);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:rgba(255,255,255,.35);}
.crumb .current{color:rgba(255,255,255,.92);}
.page-hero h1{
  color:#fff;font-size:44px;font-weight:800;letter-spacing:-.5px;line-height:1.24;
  margin:18px 0 14px;max-width:820px;
}
.page-hero .lead{
  font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);max-width:700px;
}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px;
}
.hero-stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:14px 16px;border-left:3px solid var(--c-primary);
}
.hero-stat strong{display:block;font-size:24px;color:var(--c-primary);font-weight:800;line-height:1.2;}
.hero-stat span{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-top:4px;}

/* 吸顶锚点条 */
.anchor-bar{
  position:sticky;top:68px;z-index:70;background:var(--c-white);
  border-bottom:1px solid var(--c-border);box-shadow:0 1px 2px rgba(14,20,23,.04);
}
.anchor-inner{
  display:flex;align-items:center;gap:22px;height:54px;overflow-x:auto;
  white-space:nowrap;scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  font-size:14px;color:var(--c-muted);padding:6px 0;border-bottom:2px solid transparent;flex:none;
}
.anchor-inner a:hover{color:var(--c-primary-dark);}
.anchor-inner a.active{color:var(--c-primary-dark);font-weight:700;border-bottom-color:var(--c-primary);}
.anchor-hint{margin-left:auto;font-size:13px;color:var(--c-muted);flex:none;}

/* 主体双栏 */
.section{padding:var(--sec-space) 0;}
.section-head{margin-bottom:32px;}
.section-head h2{
  font-size:32px;font-weight:700;line-height:1.3;position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);
}
.section-head p{margin-top:12px;color:var(--c-muted);font-size:15px;max-width:760px;}

.layout-two-col{
  display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;align-items:start;
}
.outline-nav{
  position:sticky;top:140px;background:var(--c-white);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:20px 18px;box-shadow:var(--sh-1);
}
.outline-nav h3{
  font-size:14px;font-weight:700;color:var(--c-muted);letter-spacing:.04em;margin-bottom:14px;
}
.outline-nav a{
  display:block;font-size:15px;color:var(--c-text);padding:10px 12px;border-radius:8px;
  border-left:2px solid transparent;
}
.outline-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.outline-nav a.active{
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-weight:700;border-left-color:var(--c-primary);
}
.outline-nav .outline-tip{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--c-border);
  font-size:13px;color:var(--c-muted);line-height:1.7;
}

/* 卡片瀑布 */
.stream{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.card{
  background:var(--c-white);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);opacity:0;transition:opacity .24s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,190,143,.4);}
.card:hover::before{opacity:1;}
.card.span-2{grid-column:span 2;}
.card h3{font-size:22px;font-weight:600;line-height:1.4;margin-bottom:12px;}
.card p{color:var(--c-muted);font-size:15px;line-height:1.8;}
.card-media{
  border-radius:var(--r-card);overflow:hidden;background:#EDF2F0;margin-bottom:18px;
}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:var(--r-badge);
  font-size:13px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.badge-new{background:var(--c-accent);color:#fff;}
.badge-ver{background:var(--c-violet);color:#fff;}
.badge-plain{background:#EEF2F1;color:var(--c-muted);}

.point-list{margin-top:16px;}
.point-list li{
  position:relative;padding-left:20px;font-size:15px;color:var(--c-text);line-height:1.8;margin-bottom:8px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-primary);
}
.point-list li:last-child{margin-bottom:0;}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:15px;font-weight:700;color:var(--c-primary-dark);
}
.card-link:hover{color:var(--c-accent);}
.card-link span{transition:transform .2s ease;}
.card-link:hover span{transform:translateX(3px);}

/* 步骤 */
.steps{margin-top:18px;counter-reset:step;}
.steps li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--c-border);
  font-size:15px;line-height:1.75;
}
.steps li:last-child{border-bottom:none;padding-bottom:0;}
.step-no{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);
  color:var(--c-primary-dark);font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.steps strong{display:block;margin-bottom:2px;color:var(--c-text);}
.steps p{color:var(--c-muted);font-size:14px;}

/* 小提示条 */
.notice{
  margin-top:18px;background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:14px 16px;font-size:14px;color:var(--c-primary-dark);
}
.notice-warn{background:#FFF5E8;border-left-color:var(--c-warn);color:#9A6100;}

/* 内联 CTA */
.inline-cta{margin-top:8px;}
.cta-card{
  background:var(--c-ink);border-radius:var(--r-card);padding:36px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,190,143,.18),transparent 70%);
}
.cta-card h3{color:#fff;font-size:24px;font-weight:700;margin-bottom:8px;position:relative;}
.cta-card p{color:rgba(255,255,255,.7);font-size:14px;position:relative;}
.cta-card .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;}

/* 表单 */
.form-card{
  background:var(--c-white);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:span 2;}
.field label{font-size:14px;font-weight:600;color:var(--c-text);}
.field input,.field select,.field textarea{
  height:44px;border:1px solid var(--c-border);border-radius:var(--r-input);
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--c-text);background:var(--c-white);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:var(--c-primary-soft);
  box-shadow:0 0 0 3px rgba(15,190,143,.12);
}
.field input.error,.field textarea.error{border-color:var(--c-error);}
.field .err-tip{font-size:12px;color:var(--c-error);display:none;}
.field.has-error .err-tip{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;grid-column:span 2;}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--c-primary);}
.check-row span{font-size:13px;color:var(--c-muted);line-height:1.7;}
.form-actions{grid-column:span 2;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-msg{
  display:none;margin-bottom:16px;border-radius:var(--r-input);padding:12px 14px;font-size:14px;
  background:#E9F8F0;color:#0B6B3C;border-left:3px solid var(--c-success);
}
.form-msg.show{display:block;}
.form-note{font-size:13px;color:var(--c-muted);}
.privacy-bar{
  margin-top:14px;background:#F1F4F3;border-radius:var(--r-card);padding:12px 16px;
  font-size:13px;color:var(--c-muted);line-height:1.7;
}
.privacy-bar a{color:var(--c-primary-dark);text-decoration:underline;}

/* FAQ */
.faq-list{max-width:900px;}
.faq-item{
  border:1px solid var(--c-border);border-radius:10px;background:var(--c-white);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item:hover{border-color:rgba(15,190,143,.4);}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;gap:12px;
  padding:14px 18px;font-size:16px;font-weight:600;color:var(--c-text);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex:none;
}
.faq-item summary::after{
  content:"+";margin-left:auto;color:var(--c-muted);font-size:20px;font-weight:400;line-height:1;
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--c-primary-dark);}
.faq-item[open] summary::after{content:"–";color:var(--c-primary-dark);}
.faq-item .faq-a{
  padding:2px 18px 18px 38px;font-size:15px;color:var(--c-muted);line-height:1.8;
  background:#FAFBFB;border-top:1px solid var(--c-border);padding-top:14px;
}

/* 悬浮按钮与弹层 */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:100;
  height:48px;padding:0 22px;border:none;border-radius:999px;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 12px 28px rgba(255,122,47,.32);transition:transform .2s ease,background-color .2s ease;
}
.float-btn:hover{background:var(--c-accent-dark);transform:translateY(-2px);}
.modal-mask{
  position:fixed;inset:0;background:rgba(14,20,23,.55);z-index:140;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  display:flex;align-items:center;justify-content:center;padding:20px;
}
.modal-mask.open{opacity:1;visibility:visible;}
.modal-card{
  width:100%;max-width:640px;background:var(--c-white);border-radius:16px;padding:28px;
  max-height:88vh;overflow-y:auto;transform:translateY(12px);transition:transform .25s ease;
}
.modal-mask.open .modal-card{transform:translateY(0);}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px;}
.modal-head h3{font-size:22px;font-weight:700;}
.modal-head p{font-size:14px;color:var(--c-muted);margin-top:6px;}
.modal-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-border);background:var(--c-white);
  color:var(--c-muted);font-size:18px;line-height:1;flex:none;
}
.modal-close:hover{border-color:var(--c-primary);color:var(--c-primary-dark);}
.modal .form-grid{margin-top:18px;}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px;
}
.footer-brand .brand{color:#fff;font-size:17px;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
.footer-domain{margin-top:12px;font-size:13px;color:rgba(255,255,255,.42);letter-spacing:.02em;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);}
.footer-bottom-inner{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:18px 24px;font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom-inner .sep{color:rgba(255,255,255,.4);}
.to-top{margin-left:auto;color:var(--c-primary);}
.to-top:hover{color:#fff;}

/* 响应式 */
@media (max-width:1199px){
  .layout-two-col{grid-template-columns:220px minmax(0,1fr);gap:28px;}
}
@media (max-width:991px){
  .nav-links,.nav-cta .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-main{height:56px;}
  .anchor-bar{top:56px;}
  .page-hero h1{font-size:34px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .layout-two-col{grid-template-columns:minmax(0,1fr);}
  .outline-nav{position:static;top:auto;}
  .outline-nav h3{margin-bottom:10px;}
  .outline-nav .outline-inner{display:flex;flex-wrap:wrap;gap:8px;}
  .outline-nav a{border-left:none;border:1px solid var(--c-border);padding:8px 14px;}
  .outline-nav a.active{border-color:var(--c-primary);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
}
@media (max-width:767px){
  .stream{grid-template-columns:minmax(0,1fr);}
  .card.span-2{grid-column:span 1;}
  .page-hero{padding:36px 0 34px;}
  .page-hero h1{font-size:28px;letter-spacing:-.3px;}
  .page-hero .lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .card{padding:18px;}
  .card h3{font-size:18px;}
  .container{padding:0 16px;}
  .cta-card{padding:24px 20px;}
  .cta-card h3{font-size:20px;}
  .form-grid{grid-template-columns:minmax(0,1fr);}
  .field.full,.check-row,.form-actions{grid-column:span 1;}
  .faq-item .faq-a{padding-left:18px;}
  .float-btn{
    right:0;left:0;bottom:0;width:100%;border-radius:0;height:52px;padding:0;
  }
  .footer-grid{grid-template-columns:minmax(0,1fr);padding:40px 0 28px;}
  .footer-bottom-inner{padding:16px;}
  .to-top{margin-left:0;}
  .anchor-hint{display:none;}
}
@media (max-width:575px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:10px;}
  .hero-stat{padding:12px;}
  .hero-stat strong{font-size:20px;}
  .topbar-inner{gap:14px;}
}

/* roulang page: category2 */
:root{
  --primary:#0FBE8F;
  --primary-dark:#0A8F6C;
  --primary-soft:#E6FAF3;
  --accent:#FF7A2F;
  --accent-dark:#E4651C;
  --violet:#7A5CFF;
  --ink:#0E1417;
  --text:#1B2428;
  --text-2:#55666C;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --ok:#12A150;
  --err:#E5484D;
  --warn:#D98600;
  --r-card:12px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(14,20,23,.06),0 8px 24px rgba(14,20,23,.08);
  --shadow-2:0 12px 28px rgba(15,190,143,.16);
  --maxw:1200px;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary-dark);text-decoration:none}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* 顶部信息条 */
.top-bar{background:var(--ink);color:#fff;height:36px;overflow:hidden}
.top-bar-inner{
  display:flex;align-items:center;gap:24px;height:36px;
  font-size:13px;line-height:36px;white-space:nowrap;overflow-x:auto;
  scrollbar-width:none;
}
.top-bar-inner::-webkit-scrollbar{display:none}
.top-domain{color:rgba(255,255,255,.68);flex:none}
.top-tip{color:rgba(255,255,255,.86);flex:none}
.top-action{margin-left:auto;color:var(--accent);font-weight:600;flex:none}
.top-action:hover{color:#fff}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--line);
}
.nav-main{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.2px;flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--primary);color:var(--ink);
  display:grid;place-items:center;font-size:15px;font-weight:800;flex:none;
}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;padding:6px 0;font-size:16px;color:var(--text);
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--primary-dark)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary-dark);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .18s ease;
}
.nav-toggle:hover{border-color:var(--primary)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,320px);background:#fff;z-index:70;
  padding:22px 18px;display:flex;flex-direction:column;gap:4px;
  transform:translateX(102%);transition:transform .26s ease;
  box-shadow:-12px 0 32px rgba(14,20,23,.14);overflow-y:auto;visibility:hidden;
}
.nav-drawer.open{transform:translateX(0);visibility:visible}
.nav-drawer-title{font-size:13px;color:var(--text-2);padding:6px 12px 12px}
.nav-drawer a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-bottom:1px solid var(--line);
  color:var(--text);font-size:16px;border-radius:8px;
}
.nav-drawer a.active{color:var(--primary-dark);font-weight:600;background:var(--primary-soft);border-bottom-color:transparent}
.nav-drawer .btn{margin-top:18px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,20,23,.42);z-index:65;opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .18s ease;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:var(--ink)}
.btn-primary:hover{background:#16d29f;color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,122,47,.3)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary-dark);color:var(--ink)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--primary-soft);color:var(--ink)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:disabled{opacity:.5;transform:none;box-shadow:none;cursor:not-allowed}

/* 窄 Hero */
.page-hero{
  position:relative;color:#fff;padding:46px 0 42px;
  background-image:linear-gradient(100deg,rgba(14,20,23,.95) 0%,rgba(14,20,23,.8) 46%,rgba(14,20,23,.5) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:18px 18px;opacity:.6;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.breadcrumb .current{color:#fff}
.page-hero h1{
  color:#fff;font-size:36px;font-weight:800;letter-spacing:-.5px;max-width:900px;
}
.page-sub{color:rgba(255,255,255,.84);font-size:17px;line-height:1.75;margin-top:16px;max-width:720px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.metric{
  display:flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:var(--r-card);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
}
.metric-num{font-size:22px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums}
.metric-label{font-size:13px;color:rgba(255,255,255,.82)}

/* 锚点条 */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:40;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(14,20,23,.04);
}
.anchor-bar-inner{display:flex;align-items:center;gap:8px;padding:10px 0;overflow-x:auto;scrollbar-width:none}
.anchor-bar-inner::-webkit-scrollbar{display:none}
.anchor-bar a{
  flex:none;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--bg);
  font-size:14px;color:var(--text);transition:all .18s ease;
}
.anchor-bar a:hover{background:var(--primary-soft);border-color:rgba(15,190,143,.45);color:var(--primary-dark)}

/* 板块 */
.section{padding:80px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  position:relative;padding-left:14px;font-size:32px;font-weight:700;letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary);
}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.8}

/* 步骤条 */
.step-track{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);transition:all .2s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,190,143,.4);border-left-color:var(--accent)}
.step-num{font-size:26px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.step h3{font-size:18px;font-weight:600;margin:10px 0 8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}
.step:not(:last-child)::after{
  content:"";position:absolute;right:-15px;top:52px;width:9px;height:9px;
  border-top:2px solid var(--line);border-right:2px solid var(--line);transform:rotate(45deg);z-index:3;
}

/* 错落说明 */
.flow-notes{display:grid;grid-template-columns:1.5fr 1fr;gap:20px;margin-top:32px}
.note-stack{display:flex;flex-direction:column;gap:20px}
.note-card{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--r-card);padding:24px;transition:all .2s ease;
}
.note-card:hover{box-shadow:var(--shadow-2);border-color:rgba(15,190,143,.4);border-left-color:var(--accent)}
.note-card h3{font-size:19px;font-weight:600;margin-bottom:12px}
.note-card p{color:var(--text-2);font-size:15px;line-height:1.85}
.note-card p + p{margin-top:12px}
.note-card.accent-violet{border-left-color:var(--violet)}
.note-card.accent-orange{border-left-color:var(--accent)}
.note-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-green{background:var(--primary-soft);color:var(--primary-dark)}
.badge-orange{background:var(--accent);color:#fff}
.badge-violet{background:var(--violet);color:#fff}

/* 图文区块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.split-body h2{
  position:relative;padding-left:14px;font-size:32px;font-weight:700;letter-spacing:-.3px;margin-bottom:16px;
}
.split-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary);
}
.split-body > p{color:var(--text-2);line-height:1.85;font-size:15px}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:8px;
  border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(-45deg);
}

/* 错位卡片栅格 */
.card-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.plan-card{
  display:flex;flex-direction:column;grid-column:span 4;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow-1);transition:all .2s ease;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,190,143,.4)}
.plan-wide{grid-column:span 8;grid-row:span 2;border-left:3px solid var(--accent)}
.plan-head{display:flex;gap:16px;align-items:flex-start}
.icon-block{
  width:48px;height:48px;border-radius:var(--r-card);background:var(--primary-soft);color:var(--primary-dark);
  display:grid;place-items:center;font-size:18px;font-weight:800;flex:none;
}
.plan-head h3{font-size:20px;font-weight:600}
.plan-head .plan-sub{font-size:13px;color:var(--text-2);margin-top:6px}
.point-list{margin-top:18px;display:grid;gap:10px}
.point-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.75;color:var(--text-2)}
.point-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--primary);
}
.card-link{margin-top:auto;padding-top:20px;font-size:15px;font-weight:600;color:var(--primary-dark)}
.card-link:hover{color:var(--accent)}

/* 列表行 */
.row-list{border-top:1px solid var(--line)}
.row-list li{
  display:flex;align-items:flex-start;gap:20px;padding:22px 4px;border-bottom:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease;
}
.row-list li:hover{transform:translateX(2px);border-color:rgba(15,190,143,.5)}
.row-tag{
  flex:none;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600;margin-top:3px;
}
.row-body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.row-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.row-arrow{margin-left:auto;color:var(--line);font-size:18px;flex:none;transition:color .18s ease}
.row-list li:hover .row-arrow{color:var(--primary)}

/* 内联 CTA */
.cta-inline{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:var(--r-card);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-inline::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);background-size:16px 16px;
}
.cta-inline > *{position:relative;z-index:2}
.cta-inline h2{color:#fff;font-size:23px;font-weight:700}
.cta-inline p{color:rgba(255,255,255,.76);font-size:15px;margin-top:10px;max-width:620px;line-height:1.8}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:860px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(15,190,143,.4);box-shadow:var(--shadow-1)}
.faq-item summary{
  display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 20px;
  font-size:16px;font-weight:600;cursor:pointer;list-style:none;transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--primary);flex:none;
}
.faq-item summary::after{
  content:"+";margin-left:auto;color:var(--text-2);font-size:20px;font-weight:400;line-height:1;
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-item[open] summary::after{content:"−";color:var(--primary)}
.faq-body{
  padding:4px 20px 20px 40px;color:var(--text-2);font-size:15px;line-height:1.85;
  background:#FAFBFB;border-top:1px solid var(--line);
}

/* 表单 */
.form-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:14px;font-weight:600;color:var(--text)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;font-size:15px;transition:all .18s ease;
}
.form-field textarea{height:100px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);background:var(--primary-soft);
  box-shadow:0 0 0 3px rgba(15,190,143,.14);
}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);line-height:1.7}
.checkbox-row input[type="checkbox"]{
  width:16px;height:16px;flex:none;margin-top:3px;accent-color:var(--primary);
}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.form-hint{font-size:13px;color:var(--text-2)}
.privacy-strip{
  margin-top:16px;background:#F1F4F3;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:14px 18px;font-size:13px;color:var(--text-2);line-height:1.75;
}
.privacy-strip a{color:var(--primary-dark);font-weight:600}

/* 悬浮按钮与弹层 */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:45;
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;border:none;cursor:pointer;
  box-shadow:0 12px 28px rgba(255,122,47,.32);transition:all .18s ease;
}
.float-cta:hover{background:var(--accent-dark);transform:translateY(-2px)}
.form-modal{
  position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:20px;
}
.form-modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(14,20,23,.5)}
.modal-card{
  position:relative;z-index:2;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;
  background:#fff;border-radius:var(--r-card);padding:28px;box-shadow:0 24px 60px rgba(14,20,23,.24);
}
.modal-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.modal-card .modal-sub{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:18px}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);cursor:pointer;font-size:18px;line-height:1;transition:all .18s ease;
}
.modal-close:hover{border-color:var(--primary);color:var(--primary-dark)}
.modal-note{font-size:13px;color:var(--text-2);line-height:1.7;margin-top:14px}

/* 页脚 */
.site-footer{background:var(--ink);color:#fff;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand:hover{color:#fff}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.85;max-width:360px}
.footer-domain{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.02em}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08)}
.footer-bottom-inner{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:20px 0;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom-inner .sep{color:rgba(255,255,255,.42)}
.to-top{margin-left:auto;color:rgba(255,255,255,.78);font-size:13px;transition:color .18s ease}
.to-top:hover{color:var(--primary)}

/* 响应式 */
@media (max-width:1199px){
  .split{gap:36px}
  .page-hero h1{font-size:32px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-main{height:56px}
  :root{--nav-h:56px}
  .anchor-bar{top:56px}
  .step-track{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
  .flow-notes{grid-template-columns:1fr}
  .card-grid{grid-template-columns:repeat(6,1fr)}
  .plan-wide{grid-column:span 6;grid-row:auto}
  .plan-card{grid-column:span 3}
  .split{grid-template-columns:1fr;gap:28px}
  .split-media{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
  .page-hero h1{font-size:28px}
  .section-head h2,.split-body h2{font-size:26px}
  .cta-inline{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero{padding:34px 0 32px}
  .page-hero h1{font-size:26px;letter-spacing:-.2px}
  .page-sub{font-size:15px;margin-top:12px}
  .hero-metrics{gap:10px;margin-top:22px}
  .metric{padding:8px 14px}
  .metric-num{font-size:18px}
  .section-head h2,.split-body h2{font-size:22px}
  .section-desc{font-size:15px}
  .step-track{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .plan-wide,.plan-card{grid-column:span 1}
  .form-grid{grid-template-columns:1fr}
  .form-wrap{padding:22px}
  .row-list li{flex-direction:column;gap:10px}
  .row-arrow{display:none}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .to-top{margin-left:0}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;height:52px;border-radius:0;justify-content:center;
  }
  .cta-inline{padding:26px 20px;border-radius:var(--r-card)}
  .cta-inline h2{font-size:20px}
  body{padding-bottom:52px}
}
@media (max-width:520px){
  h1{word-break:break-word}
  .brand{font-size:15px}
  .top-bar-inner{gap:16px}
  .footer-bottom-inner{font-size:12px}
}

/* roulang page: category3 */
:root{
  --c-main:#0FBE8F;
  --c-main-dark:#0A8F6C;
  --c-main-light:#E6FAF3;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E6651A;
  --c-purple:#7A5CFF;
  --c-ink:#0E1417;
  --c-text:#1B2428;
  --c-sub:#55666C;
  --c-border:#E2E8E6;
  --c-bg:#F6F8F7;
  --c-card:#FFFFFF;
  --c-ok:#12A150;
  --c-err:#E5484D;
  --c-warn:#D98600;
  --radius-card:12px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(14,20,23,.06), 0 8px 24px rgba(14,20,23,.08);
  --shadow-hover:0 12px 28px rgba(15,190,143,.16);
  --space-section:80px;
  --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--c-main-dark);}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:0;}
p{margin:0;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部信息条 ---------- */
.top-bar{
  background:var(--c-ink);
  color:rgba(255,255,255,.86);
  font-size:13px;
  height:36px;
  display:flex;
  align-items:center;
  overflow:hidden;
}
.top-bar .container{
  display:flex;
  align-items:center;
  gap:20px;
  white-space:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
}
.top-bar .container::-webkit-scrollbar{display:none;}
.top-bar .tb-domain{color:rgba(255,255,255,.62);letter-spacing:.02em;}
.top-bar .tb-note{color:rgba(255,255,255,.78);}
.top-bar .tb-action{
  margin-left:auto;
  color:var(--c-accent);
  font-weight:600;
  flex-shrink:0;
}
.top-bar .tb-action:hover{color:#ffa06a;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:0 1px 2px rgba(14,20,23,.04);
}
.nav-main{
  height:68px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:17px;
  color:var(--c-text);
  letter-spacing:0;
  flex-shrink:0;
}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:28px;
  height:28px;
  border-radius:8px;
  background:linear-gradient(135deg,var(--c-main) 0%,var(--c-main-dark) 100%);
  color:#06231B;
  font-size:15px;
  font-weight:800;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:16px;
  color:var(--c-text);
  border-radius:8px;
  transition:color .18s ease, background .18s ease;
}
.nav-links a:hover{color:var(--c-main-dark);background:var(--c-main-light);}
.nav-links a.active{color:var(--c-main-dark);font-weight:600;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-main);
}
.nav-cta{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--c-border);
  border-radius:10px;
  background:#fff;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-text);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1.5px solid transparent;
  border-radius:var(--radius-btn);
  padding:0 22px;
  height:46px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--c-main);color:var(--c-ink);}
.btn-primary:hover{background:#22d1a1;color:var(--c-ink);transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,190,143,.28);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.28);}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-main-light);border-color:var(--c-main-dark);color:var(--c-main-dark);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-main-dark);
  border:0;
  background:none;
  padding:0;
}
.btn-link:hover{color:var(--c-accent);}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 8px;
  border-radius:var(--radius-badge);
  font-size:12px;
  font-weight:600;
  line-height:1;
  background:var(--c-main-light);
  color:var(--c-main-dark);
  white-space:nowrap;
}
.badge-new{background:var(--c-accent);color:#fff;}
.badge-ver{background:var(--c-purple);color:#fff;}
.badge-grey{background:#EEF2F1;color:var(--c-sub);}

/* ---------- 窄 Hero ---------- */
.cat-hero{
  position:relative;
  background:var(--c-ink);
  color:#fff;
  overflow:hidden;
  padding:52px 0 44px;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.30;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size:18px 18px;
  opacity:.5;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--c-main);}
.crumb .cur{color:#fff;}
.cat-hero h1{
  font-size:44px;
  font-weight:800;
  letter-spacing:-.5px;
  max-width:860px;
}
.cat-hero .hero-desc{
  margin-top:16px;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
  max-width:720px;
}
.hero-metrics{
  margin-top:30px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
  max-width:860px;
}
.hero-metric{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  padding:14px 16px;
}
.hero-metric strong{
  display:block;
  font-size:22px;
  font-weight:800;
  color:var(--c-main);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-metric span{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:rgba(255,255,255,.72);
}

/* ---------- 吸顶锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:68px;
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:0 4px 14px rgba(14,20,23,.04);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:8px;
  height:54px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex-shrink:0;
  font-size:14px;
  font-weight:600;
  color:var(--c-sub);
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--c-border);
  transition:all .18s ease;
}
.anchor-inner a:hover,
.anchor-inner a.on{
  color:var(--c-main-dark);
  border-color:rgba(15,190,143,.45);
  background:var(--c-main-light);
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--space-section) 0;}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  padding-left:14px;
  position:relative;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:4px;
  border-radius:3px;
  background:var(--c-main);
}
.section-head .sub{
  margin-top:10px;
  padding-left:14px;
  font-size:15px;
  color:var(--c-sub);
  max-width:640px;
}
.section-head .head-action{align-self:flex-start;margin-top:6px;}

/* ---------- 对照行（卡片化） ---------- */
.version-list{display:flex;flex-direction:column;gap:18px;}
.version-row{
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  gap:26px;
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:24px;
  position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.version-row::before{
  content:"";
  position:absolute;
  left:0;
  top:22px;
  bottom:22px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--c-main);
}
.version-row:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(15,190,143,.4);
}
.version-row.is-accent::before{background:var(--c-accent);}
.version-row.is-purple::before{background:var(--c-purple);}
.vr-left{display:flex;flex-direction:column;gap:12px;}
.vr-thumb{
  width:100%;
  aspect-ratio:16/9;
  border-radius:12px;
  overflow:hidden;
  background:#EDF2F0;
}
.vr-thumb img{width:100%;height:100%;object-fit:cover;}
.vr-tags{display:flex;flex-wrap:wrap;gap:8px;}
.vr-meta{font-size:13px;color:var(--c-sub);}
.vr-right h3{font-size:22px;font-weight:600;}
.vr-right .vr-intro{
  margin-top:10px;
  font-size:15px;
  color:var(--c-sub);
  line-height:1.8;
}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.75;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--c-main);
}
.version-row.is-accent .point-list li::before{background:var(--c-accent);}
.version-row.is-purple .point-list li::before{background:var(--c-purple);}
.vr-foot{
  margin-top:20px;
  padding-top:16px;
  border-top:1px dashed var(--c-border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.vr-foot .hint{font-size:13px;color:var(--c-sub);}

/* ---------- 礼包节奏时间线 ---------- */
.flow-wrap{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.flow-line{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  position:relative;
}
.flow-step{
  position:relative;
  padding:24px 20px;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  background:#fff;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,190,143,.4);}
.flow-num{
  width:38px;height:38px;
  border-radius:50%;
  background:var(--c-main-light);
  color:var(--c-main-dark);
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.flow-step h3{font-size:18px;font-weight:600;}
.flow-step p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-sub);}

/* ---------- 核对清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.check-card{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,190,143,.4);}
.check-card h3{font-size:18px;font-weight:600;display:flex;align-items:center;gap:10px;}
.check-card h3 i{
  width:8px;height:8px;border-radius:2px;background:var(--c-main);display:inline-block;flex-shrink:0;
}
.check-card p{margin-top:10px;font-size:15px;color:var(--c-sub);line-height:1.8;}

/* ---------- 数据条 ---------- */
.stats-bar{
  background:var(--c-ink);
  color:#fff;
  padding:56px 0;
  position:relative;
  overflow:hidden;
}
.stats-bar::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px);
  background-size:20px 20px;
  opacity:.45;
  pointer-events:none;
}
.stats-bar .container{position:relative;z-index:2;}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
}
.stat-item{
  padding:6px 24px;
  border-left:1px solid rgba(255,255,255,.12);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-item strong{
  display:block;
  font-size:34px;
  font-weight:800;
  color:var(--c-main);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-item span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.72);}
.stats-note{
  margin-top:28px;
  font-size:14px;
  color:rgba(255,255,255,.6);
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:18px;
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--c-border);
  border-radius:10px;
  background:#fff;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(15,190,143,.4);}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  gap:12px;
  background:none;
  border:0;
  padding:12px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  transition:color .2s ease;
}
.faq-q .mark{
  width:8px;height:8px;border-radius:2px;background:var(--c-main);flex-shrink:0;
}
.faq-q .arrow{
  margin-left:auto;
  font-size:14px;
  color:var(--c-sub);
  transition:transform .2s ease;
}
.faq-item.open .faq-q{color:var(--c-main-dark);}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--c-main-dark);}
.faq-a{
  display:none;
  padding:0 20px 18px 40px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-sub);
  background:#FBFCFC;
}
.faq-item.open .faq-a{display:block;animation:fadeIn .2s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- 内联 CTA ---------- */
.cta-inline{
  background:var(--c-main-light);
  border:1px solid rgba(15,190,143,.28);
  border-radius:16px;
  padding:32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-inline h3{font-size:22px;font-weight:700;}
.cta-inline p{margin-top:8px;font-size:15px;color:var(--c-sub);}
.cta-inline .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 表单 ---------- */
.form-block{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:16px;
  padding:32px;
  box-shadow:var(--shadow-1);
}
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:24px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--c-text);}
.field .req{color:var(--c-err);}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--c-border);
  border-radius:var(--radius-input);
  background:#fff;
  padding:0 14px;
  height:44px;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--c-main);
  background:#FCFFFE;
  box-shadow:0 0 0 3px rgba(15,190,143,.14);
}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:20px;
  font-size:13px;
  color:var(--c-sub);
  line-height:1.7;
}
.check-row input[type="checkbox"]{
  width:16px;height:16px;margin-top:3px;accent-color:var(--c-main);flex-shrink:0;
}
.form-submit{margin-top:22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-tip{font-size:13px;color:var(--c-sub);}
.privacy-bar{
  margin-top:14px;
  background:#F1F4F3;
  border-radius:10px;
  padding:12px 16px;
  font-size:13px;
  color:var(--c-sub);
  line-height:1.7;
}
.privacy-bar a{color:var(--c-main-dark);text-decoration:underline;}

/* ---------- 悬浮触发 ---------- */
.float-btn{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:70;
  border-radius:999px;
  box-shadow:0 10px 26px rgba(255,122,47,.32);
}
.float-mobile{display:none;}

.modal-mask{
  position:fixed;
  inset:0;
  background:rgba(14,20,23,.55);
  z-index:90;
  display:none;
  align-items:flex-start;
  justify-content:center;
  padding:40px 16px;
  overflow-y:auto;
}
.modal-mask.open{display:flex;}
.modal-card{
  width:100%;
  max-width:720px;
  background:#fff;
  border-radius:16px;
  padding:28px;
  position:relative;
  box-shadow:0 24px 60px rgba(14,20,23,.3);
}
.modal-card h3{font-size:22px;font-weight:700;}
.modal-card .modal-sub{margin-top:8px;font-size:14px;color:var(--c-sub);}
.modal-close{
  position:absolute;
  right:16px;
  top:16px;
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--c-border);
  background:#fff;
  font-size:18px;
  line-height:1;
  color:var(--c-sub);
}
.modal-close:hover{border-color:var(--c-main);color:var(--c-main-dark);}
.modal-side-note{
  margin-top:16px;
  font-size:13px;
  color:var(--c-sub);
  background:#F1F4F3;
  border-radius:10px;
  padding:12px 14px;
  line-height:1.7;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.75);
  padding-top:60px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{color:#fff;font-size:16px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand p{margin-top:16px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-domain{
  font-size:13px;
  color:rgba(255,255,255,.42)!important;
  letter-spacing:.02em;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.66);transition:color .18s ease;}
.footer-col a:hover{color:var(--c-main);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;
}
.footer-bottom-inner{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom-inner .sep{flex:1;}
.to-top{
  color:rgba(255,255,255,.7);
  border:1px solid rgba(255,255,255,.18);
  border-radius:999px;
  padding:6px 14px;
  transition:all .18s ease;
}
.to-top:hover{color:var(--c-main);border-color:var(--c-main);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--space-section:72px;}
  .cat-hero h1{font-size:38px;}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(320px,86vw);
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:76px 16px 24px;
    transform:translateX(100%);
    transition:transform .26s ease;
    box-shadow:-12px 0 32px rgba(14,20,23,.16);
    overflow-y:auto;
    z-index:80;
    margin-left:0;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{
    height:48px;
    display:flex;
    align-items:center;
    border-bottom:1px solid var(--c-border);
    border-radius:0;
    padding:0 8px;
    font-size:16px;
  }
  .nav-links a:hover{background:transparent;color:var(--c-main-dark);}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{font-weight:700;}
  .nav-toggle{display:flex;}
  .version-row{grid-template-columns:250px minmax(0,1fr);gap:20px;}
  .flow-line{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:768px){
  :root{--space-section:56px;}
  .container{padding:0 16px;}
  .nav-main{height:56px;}
  .brand{font-size:15px;}
  .anchor-bar{top:56px;}
  .cat-hero{padding:36px 0 32px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .hero-desc{font-size:15px;}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px;}
  .section-head h2{font-size:22px;}
  .version-row{grid-template-columns:1fr;padding:18px;}
  .vr-right h3{font-size:19px;}
  .flow-line{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item{padding:0 16px;}
  .stat-item strong{font-size:26px;}
  .cta-inline{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .form-block{padding:20px;}
  .float-btn{display:none;}
  .float-mobile{
    display:flex;
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:70;
    border-radius:0;
    height:52px;
    box-shadow:0 -6px 20px rgba(14,20,23,.16);
  }
  body{padding-bottom:52px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .modal-card{padding:20px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px;}
  .section-head h2{font-size:21px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .hero-metric{padding:12px;}
  .hero-metric strong{font-size:19px;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat-item strong{font-size:24px;}
  .cta-inline .cta-actions{width:100%;}
  .cta-inline .btn{width:100%;}
}