/* roulang page: index */
:root{
  --blue:#1657B8;
  --blue-dark:#0E4185;
  --blue-light:#E8F1FE;
  --orange:#FF7A2F;
  --orange-dark:#E86518;
  --teal:#2BB3A3;
  --bg:#F7F9FC;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 6px 18px rgba(16,42,80,.08);
  --shadow-lg:0 12px 28px rgba(16,42,80,.14);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:#fff;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-dark)}
h1,h2,h3,h4,p,ul,ol,figure,table{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

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

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .25s ease,color .25s ease,box-shadow .25s ease,transform .25s ease;white-space:nowrap}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34)}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.26)}
.btn-ghost{background:#fff;color:var(--blue);border-color:#BFD4F2}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:999px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--blue)}
.link-arrow::after{content:"→";transition:transform .25s ease}
.link-arrow:hover::after{transform:translateX(4px)}
.link-underline{border-bottom:2px solid transparent}
.link-underline:hover{border-bottom-color:var(--blue)}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--blue-light);color:var(--blue);white-space:nowrap}
.badge-teal{background:rgba(43,179,163,.12);color:#1E8C7F}
.badge-orange{background:rgba(255,122,47,.13);color:#D9601A}
.dot{width:8px;height:8px;border-radius:50%;background:var(--blue);display:inline-block}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 4px 14px rgba(16,42,80,.10)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{color:inherit}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue-dark));
  display:grid;place-items:center;color:#fff;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.6px}
.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-link{position:relative;padding:8px 12px;font-size:14.5px;color:var(--ink-2);border-radius:8px;white-space:nowrap}
.nav-link:hover{background:var(--blue-light);color:var(--blue)}
.nav-link.is-active{color:var(--blue);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;background:var(--blue);border-radius:2px}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:11px;color:var(--ink-3);pointer-events:none}
.search-box input{height:36px;width:176px;border-radius:999px;border:1px solid var(--line);background:var(--bg);
  padding:0 14px 0 34px;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box input::placeholder{color:var(--ink-3)}
.search-box input:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px var(--blue-light)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink-2)}
.nav-toggle:hover{background:var(--blue-light);color:var(--blue)}

.drawer{position:fixed;inset:0;z-index:120;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;right:0;width:320px;max-width:86vw;height:100%;background:#fff;
  padding:22px;transform:translateX(100%);transition:transform .28s ease;overflow-y:auto}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-nav a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--ink-2)}
.drawer-nav a:hover{background:var(--blue-light);color:var(--blue)}
.drawer-nav a.is-active{background:var(--blue-light);color:var(--blue);font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(180deg,#F4F8FE 0%,#F7F9FC 100%);padding:56px 0 68px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--blue-light);color:var(--blue);font-size:13.5px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:40px;line-height:1.35;font-weight:700;letter-spacing:-.5px;color:var(--ink);margin-bottom:18px}
.hero h1 span{color:var(--blue)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-trust{display:flex;gap:26px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.hero-trust svg{color:var(--teal);flex:0 0 auto}
.hero-visual{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:16/12;background:#DCE7F7}
.hero-visual img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.55),rgba(255,255,255,0) 55%)}
.float-card{position:absolute;left:18px;bottom:18px;z-index:2;background:#fff;border-radius:14px;padding:12px 18px;
  box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:2px}
.float-card b{font-size:22px;color:var(--blue);line-height:1.2;font-variant-numeric:tabular-nums}
.float-card small{font-size:12px;color:var(--ink-3)}

/* ---------- 数据条 ---------- */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.stat{text-align:center;padding:6px 10px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:28px;font-weight:700;color:var(--blue);line-height:1.3;font-variant-numeric:tabular-nums}
.stat span{font-size:13.5px;color:var(--ink-3)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{position:relative;padding-left:16px;font-size:32px;font-weight:700;line-height:1.35;color:var(--ink)}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--blue)}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-3);padding-left:16px;max-width:640px}

/* ---------- 优惠阶梯 ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;
  box-shadow:var(--shadow);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease}
.tier:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:#CFDEF5}
.tier:nth-child(2){margin-top:16px}
.tier:nth-child(3){margin-top:32px}
.tier-num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--blue-light);
  color:var(--blue);font-weight:700;font-size:15px;margin-bottom:16px}
.tier h3{font-size:20px;font-weight:600;margin-bottom:8px}
.tier > p{font-size:14.5px;color:var(--ink-3);margin-bottom:18px}
.tier ul{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.tier li{display:flex;align-items:flex-start;gap:8px;font-size:14.5px;color:var(--ink-2)}
.tier li svg{color:var(--teal);flex:0 0 auto;margin-top:5px}

/* ---------- 对比表 ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--shadow)}
.cmp-table{min-width:760px;font-size:15px}
.cmp-table th,.cmp-table td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line)}
.cmp-table thead th{background:var(--bg);vertical-align:top;font-size:14px;color:var(--ink-2)}
.cmp-table thead th b{display:block;font-size:17px;color:var(--ink);margin-bottom:4px}
.cmp-table thead th em{font-style:normal;font-size:13px;color:var(--ink-3)}
.cmp-table tbody th{text-align:left;font-weight:600;color:var(--ink);font-size:15px}
.cmp-table tbody tr:nth-child(even){background:#FBFCFE}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cell-yes{color:var(--teal);font-weight:700}
.cell-no{color:#C9D3E0;font-weight:700}
.col-hot{background:#F6FAFF;box-shadow:inset 2px 0 0 var(--blue),inset -2px 0 0 var(--blue)}
.reco{display:inline-block;height:22px;line-height:22px;padding:0 10px;border-radius:999px;background:var(--blue);
  color:#fff;font-size:12px;font-weight:600;margin-bottom:8px}

/* ---------- 限时入口条 ---------- */
.promo-bar{background:linear-gradient(90deg,var(--orange) 0%,#F0652B 38%,var(--blue) 100%);color:#fff;
  border-radius:16px;padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.promo-bar h3{font-size:22px;font-weight:700;margin-bottom:6px}
.promo-bar p{font-size:14.5px;color:rgba(255,255,255,.88)}
.countdown{display:flex;gap:10px}
.cd-cell{background:#fff;color:var(--blue);border-radius:8px;min-width:58px;padding:8px 6px;text-align:center;box-shadow:0 6px 16px rgba(9,30,66,.18)}
.cd-cell b{display:block;font-size:22px;line-height:1.2;font-weight:700;font-variant-numeric:tabular-nums}
.cd-cell span{font-size:11px;color:var(--ink-3)}

/* ---------- 图文导览 ---------- */
.guide-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center}
.guide-media{border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.guide-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.steps{display:flex;flex-direction:column;gap:0}
.step{position:relative;padding:0 0 26px 52px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:15px;top:34px;bottom:0;width:1px;background:var(--line)}
.step:last-child::before{display:none}
.step-num{position:absolute;left:0;top:0;width:32px;height:32px;border-radius:10px;background:var(--blue-light);
  color:var(--blue);display:grid;place-items:center;font-weight:700;font-size:14px}
.step h4{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--ink-2)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.news-lead{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow);transition:box-shadow .25s ease,transform .25s ease}
.news-lead:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);color:inherit}
.news-lead-media{aspect-ratio:16/8;overflow:hidden;background:#E7EFFA}
.news-lead-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:22px 24px 24px}
.news-lead-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:12px 0 10px;color:var(--ink)}
.news-lead-body p{font-size:14.5px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;
  font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.timeline{position:relative;padding-left:20px}
.timeline::before{content:"";position:absolute;left:4px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;display:block;padding:0 0 22px 14px;color:inherit}
.tl-item:last-child{padding-bottom:0}
.tl-item:hover h3{color:var(--blue)}
.tl-dot{position:absolute;left:-20px;top:9px;width:9px;height:9px;border-radius:50%;background:#fff;border:2px solid var(--blue)}
.tl-item h3{font-size:16px;font-weight:600;line-height:1.55;margin-bottom:8px;color:var(--ink);transition:color .2s ease;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tl-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.empty-state{grid-column:1/-1;text-align:center;padding:56px 24px;background:#fff;border:1px dashed #CFDEF5;border-radius:var(--r-card)}
.empty-state svg{color:#B9CBEA;margin:0 auto 16px}
.empty-state p{font-size:15px;color:var(--ink-3);margin-bottom:18px}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.form-points{display:flex;flex-direction:column;gap:22px;margin-top:26px}
.form-points li{display:flex;gap:14px}
.fp-icon{width:42px;height:42px;border-radius:12px;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;flex:0 0 auto}
.form-points h4{font-size:16px;font-weight:600;margin-bottom:4px}
.form-points p{font-size:14.5px;color:var(--ink-2)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field label i{color:var(--orange);font-style:normal}
.field input,.field select,.field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:8px;
  padding:0 14px;background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238A97A8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-light)}
.field.has-error input,.field.has-error select{border-color:#E24C4C;box-shadow:0 0 0 3px rgba(226,76,76,.12)}
.err-msg{display:none;font-size:12px;color:#D63A3A;margin-top:6px}
.field.has-error .err-msg{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2);margin:6px 0 20px}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--blue)}
.form-tip{font-size:13px;color:var(--ink-3);text-align:center;margin-top:12px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;align-items:start}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item[open]{border-color:#CFDEF5;box-shadow:var(--shadow)}
.faq-item summary{display:flex;align-items:center;gap:12px;padding:18px 20px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FBFCFE}
.faq-idx{width:28px;height:28px;border-radius:9px;background:var(--blue-light);color:var(--blue);
  display:grid;place-items:center;font-size:13px;font-weight:700;flex:0 0 auto}
.faq-sign{margin-left:auto;color:var(--ink-3);font-size:18px;line-height:1;transition:transform .25s ease}
.faq-item[open] .faq-sign{transform:rotate(45deg);color:var(--blue)}
.faq-body{padding:0 20px 20px 60px;font-size:15px;line-height:1.85;color:var(--ink-2);position:relative}
.faq-item[open] .faq-body::before{content:"";position:absolute;left:20px;top:2px;bottom:20px;width:3px;border-radius:3px;background:var(--blue)}

/* ---------- CTA 条 ---------- */
.cta-strip{background:var(--blue-light);border-radius:18px;padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-strip h3{font-size:22px;font-weight:700;margin-bottom:6px}
.cta-strip p{font-size:14.5px;color:var(--ink-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:#F2F6FC;border-top:1px solid var(--line);padding:56px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand .brand-text strong{font-size:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);margin:16px 0 18px;max-width:320px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2)}
.footer-social a:hover{color:var(--blue);border-color:#CFDEF5;background:var(--blue-light)}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--blue)}
.footer-col li span{font-size:14px;color:var(--ink-2)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--ink-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .hero-visual{aspect-ratio:16/9}
  .tiers{grid-template-columns:1fr 1fr}
  .tier:nth-child(3){margin-top:16px}
  .news-grid{grid-template-columns:1fr;gap:26px}
  .guide-grid{grid-template-columns:1fr;gap:28px}
  .form-grid{grid-template-columns:1fr;gap:28px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .stat:nth-child(2){border-right:0}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .section{padding:56px 0}
  .header-inner{height:64px;gap:12px}
  .search-box{display:none}
  .hero{padding:36px 0 48px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%;min-width:280px}
  .hero-trust{gap:14px;flex-direction:column;align-items:flex-start}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head h2{font-size:22px}
  .tiers{grid-template-columns:1fr;gap:18px}
  .tier:nth-child(2),.tier:nth-child(3){margin-top:0}
  .promo-bar{padding:22px;flex-direction:column;align-items:stretch}
  .promo-bar .btn{width:100%}
  .countdown{justify-content:space-between}
  .cd-cell{flex:1;min-width:0}
  .cta-strip{padding:24px;flex-direction:column;align-items:stretch}
  .cta-strip .btn{width:100%}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-body{padding-left:20px}
  .faq-item[open] .faq-body::before{display:none}
  .site-footer{margin-top:56px}
}
@media (max-width:479px){
  .hero h1{font-size:25px}
  .stat b{font-size:23px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --blue:#1657B8;
  --blue-dark:#0E4185;
  --blue-soft:#E8F1FE;
  --orange:#FF7A2F;
  --orange-dark:#E86618;
  --orange-soft:#FFF2E9;
  --teal:#2BB3A3;
  --teal-soft:#E4F6F3;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --dark:#0E1C33;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 6px 18px rgba(16,42,80,.08);
  --sh-hover:0 12px 28px rgba(16,42,80,.14);
  --wrap:1200px;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:2px;
  border-radius:4px;
}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:32px;
  font-weight:700;
  letter-spacing:-.4px;
  line-height:1.35;
  margin:0 0 12px;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:4px;height:20px;
  border-radius:2px;
  background:var(--blue);
}
.sec-desc{font-size:15px;color:var(--ink-2);max-width:760px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 14px rgba(16,42,80,.10);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;display:grid;place-items:center;
  box-shadow:0 6px 14px rgba(22,87,184,.28);
}
.brand-text strong{display:block;font-size:15px;font-weight:700;line-height:1.15;letter-spacing:-.2px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 12px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--blue);background:var(--blue-soft);}
.nav-link.is-active{color:var(--blue);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;background:var(--blue);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 14px;
  border-radius:999px;
  background:var(--bg);
  border:1px solid var(--line);
  color:var(--ink-3);
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.search-box input{
  border:0;outline:0;background:transparent;
  font-size:14px;width:132px;color:var(--ink);
}
.search-box:focus-within{
  background:#fff;border-color:var(--blue);
  box-shadow:0 0 0 3px var(--blue-soft);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:4px;
  font-size:14px;font-weight:600;color:var(--blue);
}
.link-arrow:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{color:var(--blue);border-color:var(--blue);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .25s ease,color .25s ease,box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28);}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34);}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.26);}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue);}
.btn-ghost:hover{background:var(--blue-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-sm{height:36px;padding:0 18px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--blue);
}
.btn-text:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;
  border-radius:999px;
  font-size:12px;font-weight:600;
  background:var(--blue-soft);color:var(--blue);
  white-space:nowrap;
}
.badge-orange{background:var(--orange-soft);color:#C8540E;}
.badge-teal{background:var(--teal-soft);color:#1B8B7C;}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:22px 0 0;
  font-size:13px;color:var(--ink-3);
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#C9D3E0;}
.breadcrumb .current{
  color:var(--blue);font-weight:600;
  max-width:62ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 324px;
  gap:44px;
  align-items:start;
  padding:26px 0 88px;
}
.article-main{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  padding:36px 40px 40px;
  min-width:0;
}
.article-top-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.article-head h1{
  font-size:40px;
  font-weight:700;
  letter-spacing:-.5px;
  line-height:1.32;
  margin:16px 0 18px;
  color:var(--ink);
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:13px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.article-meta .key{color:var(--ink-2);font-weight:600;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C9D3E0;display:inline-block;}
.article-cover{margin:26px 0 8px;}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
}
.article-cover figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
}

/* ============ 正文排版 ============ */
.article-body{
  max-width:800px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  margin:30px auto 0;
  word-break:break-word;
}
.article-body > :first-child{margin-top:0;}
.article-body p{margin:0 0 1.5em;}
.article-body h2{
  position:relative;
  font-size:28px;
  font-weight:700;
  line-height:1.4;
  letter-spacing:-.3px;
  margin:40px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--blue);
}
.article-body h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
  margin:30px 0 12px;
  color:var(--ink);
}
.article-body h4{
  font-size:17px;
  font-weight:700;
  margin:24px 0 10px;
  color:var(--blue-dark);
}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:0;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--blue);
}
.article-body ol{counter-reset:li;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;
  background:var(--blue-soft);color:var(--blue);
  font-size:12px;font-weight:700;
  display:grid;place-items:center;
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--blue-soft);
  border-left:3px solid var(--blue);
  border-radius:0 var(--r-img) var(--r-img) 0;
  font-size:18px;
  font-style:italic;
  color:var(--blue-dark);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-img);
  margin:24px auto;
  border:1px solid var(--line);
}
.article-body a{color:var(--blue);border-bottom:1px solid rgba(22,87,184,.35);}
.article-body a:hover{border-bottom-width:2px;}
.article-body table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow:hidden;
  font-size:15px;
  margin:24px 0;
}
.article-body thead th{
  background:var(--blue-soft);
  color:var(--blue-dark);
  font-weight:700;
  text-align:left;
}
.article-body th,.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body code{
  background:#EEF2F8;
  border-radius:6px;
  padding:2px 6px;
  font-size:15px;
  color:#2B3A50;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ============ 空态 ============ */
.empty-state{
  max-width:560px;
  margin:36px auto 10px;
  text-align:center;
  padding:48px 28px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:var(--bg);
}
.empty-ico{
  width:96px;height:96px;border-radius:24px;
  margin:0 auto 20px;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  color:var(--blue);
}
.empty-state h2{font-size:22px;font-weight:700;margin:0 0 10px;}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0 0 22px;}

/* ============ 文章底部 ============ */
.article-foot{
  max-width:800px;
  margin:40px auto 0;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.foot-label{font-size:13px;color:var(--ink-3);margin-bottom:12px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;
  height:28px;padding:0 14px;
  border-radius:999px;
  font-size:13px;
  background:var(--blue-soft);
  color:var(--blue);
}
.tag:hover{background:var(--blue);color:#fff;}
.article-actions{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:26px;
}

/* ============ 侧栏 ============ */
.article-side{display:grid;gap:20px;position:sticky;top:96px;}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  padding:24px;
}
.side-card h3{
  font-size:16px;
  font-weight:700;
  margin:0 0 16px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:16px;border-radius:2px;background:var(--blue);
}
.side-dark{
  background:linear-gradient(150deg,#132545 0%,var(--dark) 100%);
  border-color:transparent;
  color:#fff;
}
.side-dark h3{color:#fff;}
.side-dark h3::before{background:var(--orange);}
.side-dark p{font-size:14px;line-height:1.85;color:#B9C6DA;margin:0 0 18px;}
.side-dark .side-line{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:#B9C6DA;margin-bottom:10px;
}
.dot-red{width:7px;height:7px;border-radius:50%;background:#FF5A5A;display:inline-block;box-shadow:0 0 0 3px rgba(255,90,90,.18);}
.hot-list{display:grid;gap:14px;}
.hot-list li{display:grid;gap:4px;padding-left:14px;position:relative;}
.hot-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--blue-soft);border:2px solid var(--blue);
}
.hot-list a{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6;}
.hot-list a:hover{color:var(--blue);}
.hot-list .time{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.side-note{font-size:13px;color:var(--ink-2);line-height:1.85;}

/* ============ 相关推荐 ============ */
.related{padding:0 0 88px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:28px;
}
.rel-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  padding:16px;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.rel-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D6E3F7;}
.rel-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);
  margin-bottom:14px;
}
.rel-card h3{
  font-size:16px;font-weight:600;line-height:1.6;
  margin:0 0 10px;color:var(--ink);
}
.rel-card:hover h3{color:var(--blue);}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums;}

/* ============ 页脚 ============ */
.site-footer{
  background:#F2F6FC;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;color:var(--ink-2);line-height:1.85;
  margin:0 0 18px;max-width:330px;
}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.footer-social a:hover{color:var(--blue);border-color:var(--blue);transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:700;margin:0 0 16px;color:var(--ink);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--blue);}
.footer-col span{font-size:14px;color:var(--ink-3);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 22px;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .header-inner{height:64px;gap:12px;}
  .main-nav{
    position:fixed;top:0;right:0;
    width:min(320px,86vw);height:100vh;
    margin:0;padding:82px 20px 28px;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    transform:translateX(100%);
    transition:transform .28s ease;
    box-shadow:-12px 0 32px rgba(16,42,80,.14);
    z-index:90;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:12px 14px;font-size:16px;border-radius:10px;}
  .nav-link.is-active::after{left:14px;right:auto;width:22px;bottom:6px;}
  .nav-toggle{display:inline-flex;}
  .search-box{display:none;}
  body.nav-open{overflow:hidden;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;padding-bottom:64px;}
  .article-side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-head h1{font-size:32px;}
  .sec-title{font-size:26px;}
  .related{padding-bottom:64px;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .article-main{padding:24px 18px 28px;border-radius:12px;}
  .article-head h1{font-size:28px;}
  .article-body{font-size:17px;}
  .article-body h2{font-size:22px;margin:32px 0 14px;}
  .article-body h3{font-size:17px;}
  .article-meta{gap:10px;font-size:12px;}
  .breadcrumb .current{white-space:normal;max-width:none;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .article-actions{gap:12px;}
  .article-actions .btn{width:100%;}
  .btn{width:auto;}
}
@media (max-width:480px){
  .brand-text strong{font-size:14px;}
  .brand-text em{font-size:10px;}
  .article-head h1{font-size:24px;}
  .sec-title{font-size:22px;}
  .side-card{padding:20px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --brand:#1657B8;
  --brand-dark:#0E4185;
  --brand-light:#E8F1FE;
  --accent:#FF7A2F;
  --accent-dark:#E96A1F;
  --mint:#2BB3A3;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-input:8px;
  --sh-1:0 6px 18px rgba(16,42,80,.08);
  --sh-2:0 12px 28px rgba(16,42,80,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .25s ease,background-color .25s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:var(--bg);}
.section--soft{background:var(--brand-light);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.3px;
  color:var(--ink);
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:4px;height:20px;
  border-radius:2px;
  background:var(--brand);
}
.sec-desc{margin-top:14px;font-size:16px;color:var(--ink-2);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 14px rgba(16,42,80,.10);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--brand-light);
  color:var(--brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--ink-3);letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-link{
  padding:8px 12px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:8px;
  position:relative;
  white-space:nowrap;
}
.nav-link:hover{background:var(--brand-light);color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--bg);
  color:var(--ink-3);
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.search-box:focus-within{
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px var(--brand-light);
}
.search-box input{
  border:0;background:transparent;outline:none;
  width:132px;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.link-arrow{font-size:14px;color:var(--ink-2);}
.link-arrow:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  cursor:pointer;
}
.nav-toggle:hover{background:var(--brand-light);color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:background-color .25s ease,color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.26);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.32);}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.24);}
.btn-secondary{background:#fff;color:var(--brand);border-color:#C7DAF6;}
.btn-secondary:hover{background:var(--brand-light);color:var(--brand-dark);}
.btn-light{background:#fff;color:var(--brand-dark);}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:999px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;
  border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.2px;
  background:var(--brand-light);color:var(--brand);
}
.badge--mint{background:rgba(43,179,163,.12);color:#1E8E81;}
.badge--accent{background:rgba(255,122,47,.12);color:#D9601B;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:6px;
  font-size:13px;color:var(--ink-3);
  padding:22px 0 0;
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.crumb span.sep{color:#C4CFDE;}
.crumb .current{color:var(--brand);}

/* ---------- Hero ---------- */
.page-hero{
  padding:36px 0 72px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F7F9FC 100%);
}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:40px;}
.hero-left{flex:1 1 480px;min-width:0;}
.hero-right{flex:1 1 380px;min-width:0;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:13px;font-weight:600;
}
.page-hero h1{
  margin-top:20px;
  font-size:40px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.5px;
  color:var(--ink);
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.trust-item svg{color:var(--brand);flex:0 0 auto;}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,0) 60%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:18px;bottom:18px;
  background:#fff;
  border-radius:12px;
  padding:12px 16px;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:2px;
}
.hero-float strong{font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;}
.hero-float span{font-size:12px;color:var(--ink-3);}

/* ---------- 图文引言 ---------- */
.intro-grid{display:flex;flex-wrap:wrap;gap:44px;align-items:center;}
.intro-text{flex:1 1 460px;min-width:0;}
.intro-media{flex:1 1 400px;min-width:0;}
.intro-media img{width:100%;aspect-ratio:16/10;object-fit:cover;box-shadow:var(--sh-1);}
.intro-text h2{font-size:30px;line-height:1.4;font-weight:700;letter-spacing:-.3px;}
.intro-text p{margin-top:16px;color:var(--ink-2);line-height:1.9;}
.intro-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.intro-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.intro-list svg{flex:0 0 auto;margin-top:5px;color:var(--mint);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:56px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,#CFE0FA 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;left:-56px;top:0;
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  border:1px solid #D3E2FA;
}
.tl-item h3{font-size:20px;font-weight:600;color:var(--ink);}
.tl-item p{margin-top:8px;color:var(--ink-2);font-size:15.5px;line-height:1.85;max-width:760px;}
.tl-meta{margin-top:10px;display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- 三宫格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#D6E3F6;}
.card h3{font-size:18px;font-weight:600;margin-top:16px;}
.card p{margin-top:8px;font-size:15px;color:var(--ink-2);line-height:1.8;}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);
}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  box-shadow:var(--sh-1);
}
table.compare{width:100%;min-width:720px;border-collapse:collapse;font-size:15px;}
table.compare th,table.compare td{
  padding:16px 18px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.compare thead th{
  background:var(--brand-light);
  color:var(--brand-dark);
  font-weight:600;
  font-size:14px;
  white-space:nowrap;
}
table.compare tbody tr:nth-child(even){background:#FAFCFF;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td:first-child{font-weight:600;color:var(--ink);white-space:nowrap;}
table.compare td{color:var(--ink-2);}
.table-hint{margin-top:12px;font-size:13px;color:var(--ink-3);}

/* ---------- 提示条 ---------- */
.tip{
  margin-top:24px;
  background:#fff;
  border-left:3px solid var(--mint);
  border-radius:10px;
  padding:18px 20px;
  box-shadow:var(--sh-1);
  display:flex;gap:12px;align-items:flex-start;
}
.tip svg{flex:0 0 auto;color:var(--mint);margin-top:3px;}
.tip p{font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:12px;
  overflow:hidden;
  transition:box-shadow .25s ease,background-color .25s ease,border-color .25s ease;
}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-item[open]{
  background:var(--brand-light);
  border-left-color:var(--brand);
  border-color:#D3E2FA;
  box-shadow:var(--sh-1);
}
.faq-q{
  display:flex;align-items:center;gap:12px;
  padding:16px 18px;
  cursor:pointer;
  list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-num{
  flex:0 0 28px;height:28px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);
  font-size:13px;font-weight:700;
}
.faq-item[open] .faq-num{background:var(--brand);color:#fff;}
.faq-sign{margin-left:auto;color:var(--brand);font-size:20px;line-height:1;transition:transform .25s ease;}
.faq-item[open] .faq-sign{transform:rotate(45deg);}
.faq-a{padding:0 20px 18px 58px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:40px;
  border-radius:16px;
  background:linear-gradient(120deg,var(--brand-dark) 0%,var(--brand) 100%);
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4;font-weight:700;}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.82);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F2F6FC;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.85;max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.footer-social a:hover{background:var(--brand-light);color:var(--brand);border-color:#D3E2FA;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);}
.footer-note{margin-top:14px;font-size:13px;color:var(--ink-3);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  font-size:13px;color:var(--ink-3);
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:64px 0;}
  .page-hero{padding:28px 0 56px;}
  .page-hero h1{font-size:32px;}
  .sec-title{font-size:26px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(320px,86vw);
    display:flex;flex-direction:column;align-items:stretch;
    gap:6px;
    padding:88px 20px 24px;
    background:#fff;
    border-left:1px solid var(--line);
    box-shadow:-12px 0 32px rgba(16,42,80,.16);
    transform:translateX(105%);
    transition:transform .28s ease;
    overflow-y:auto;
    z-index:80;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav .nav-link{padding:14px 12px;font-size:16px;border-radius:10px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--brand-light);}
  .search-box{display:none;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .section{padding:48px 0;}
  .page-hero{padding:20px 0 44px;}
  .page-hero h1{font-size:28px;}
  .sec-title{font-size:22px;}
  .hero-grid{gap:28px;}
  .hero-left{text-align:left;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;min-width:280px;}
  .hero-trust{gap:16px;}
  .grid-3{grid-template-columns:1fr;}
  .intro-grid{gap:28px;}
  .timeline{padding-left:48px;}
  .timeline::before{left:17px;}
  .tl-num{left:-48px;width:36px;height:36px;border-radius:10px;font-size:15px;}
  .cta-band{padding:28px 22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .page-hero h1{font-size:24px;}
  .sec-title{font-size:20px;}
  .brand-text strong{font-size:15px;}
  .btn{font-size:14px;padding:0 18px;}
  .faq-a{padding-left:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
:root{
  --blue:#1657B8;
  --blue-dark:#0E4185;
  --blue-light:#E8F1FE;
  --orange:#FF7A2F;
  --orange-dark:#E9661C;
  --orange-light:#FFF1E8;
  --teal:#2BB3A3;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 6px 18px rgba(16,42,80,.08);
  --sh-hover:0 12px 28px rgba(16,42,80,.14);
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--blue-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .25s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34);}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.24);}
.btn-ghost{background:#fff;color:var(--blue);border-color:#C6D8F2;}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark);border-color:var(--blue);}
.btn-sm{height:36px;padding:0 18px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;font-size:14px;font-weight:500;color:var(--blue);}
.link-arrow::after{content:"→";margin-left:5px;transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 4px 14px rgba(16,42,80,.10);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
}
.brand-text strong{display:block;font-size:16px;font-weight:700;line-height:1.2;letter-spacing:-.2px;}
.brand-text em{display:block;font-style:normal;font-size:12px;line-height:1.4;color:var(--ink-3);letter-spacing:.6px;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;
  font-size:15px;color:var(--ink-2);border-radius:8px;
}
.nav-link:hover{color:var(--blue);background:var(--blue-light);}
.nav-link.is-active{color:var(--blue);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--blue);border-radius:2px;
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--ink-3);
  transition:all .2s ease;
}
.search-box:focus-within{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px var(--blue-light);}
.search-box input{border:0;outline:0;background:transparent;width:150px;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink);cursor:pointer;
  transition:all .2s ease;
}
.nav-toggle:hover{background:var(--blue-light);border-color:#C6D8F2;color:var(--blue);}

/* ============ 首屏 ============ */
.hero-band{background:linear-gradient(180deg,#F7F9FC 0%,#FFFFFF 100%);padding:28px 0 76px;}
.status-strip{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:26px;
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-2);box-shadow:var(--sh);
}
.status-strip .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(43,179,163,.16);}
.status-strip em{font-style:normal;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--blue);text-decoration:underline;}
.breadcrumb .sep{color:#C9D3E0;}
.breadcrumb .current{color:var(--blue);font-weight:500;}
.hero-grid{margin-bottom:0;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:999px;background:var(--blue-light);color:var(--blue);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.hero-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange);}
.page-title{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:-.5px;margin:18px 0 16px;}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:540px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;padding-top:22px;border-top:1px solid var(--line);}
.fact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.fact svg{color:var(--teal);flex-shrink:0;}
.hero-visual{position:relative;margin-top:8px;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-hover);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background:linear-gradient(90deg,rgba(255,255,255,.28) 0%,rgba(255,255,255,0) 55%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:-14px;bottom:-18px;z-index:2;
  display:flex;align-items:center;gap:12px;padding:14px 20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-hover);
}
.hero-float strong{font-size:26px;color:var(--blue-dark);font-variant-numeric:tabular-nums;line-height:1;}
.hero-float span{display:block;font-size:13px;color:var(--ink-3);}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--bg);}
.sec-head{max-width:780px;margin-bottom:44px;}
.sec-title{position:relative;padding-left:18px;font-size:32px;font-weight:700;letter-spacing:-.5px;line-height:1.35;}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--blue);
}
.sec-desc{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-2);}

/* ============ 板块索引卡片 ============ */
.tile-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.tile{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);transition:all .25s ease;
}
.tile:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D3E1F5;}
.tile-icon{
  width:44px;height:44px;border-radius:12px;background:var(--blue-light);color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.tile h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.tile p{font-size:15px;line-height:1.8;color:var(--ink-2);margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--blue-light);color:var(--blue);font-size:12px;font-weight:500;
}
.tag-warm{background:var(--orange-light);color:var(--orange-dark);}
.tag-teal{background:rgba(43,179,163,.12);color:#1E8C7F;}

/* ============ Z 字图文 ============ */
.zblock{margin-bottom:72px;}
.zblock:last-child{margin-bottom:0;}
.zblock-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh);
}
.zindex{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--orange);font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.zblock-text h3{font-size:22px;font-weight:600;line-height:1.5;margin-bottom:14px;}
.zblock-text p{font-size:15px;line-height:1.9;color:var(--ink-2);margin-bottom:18px;}
.check-list li{display:flex;gap:10px;padding:7px 0;font-size:15px;color:var(--ink-2);}
.check-list svg{flex-shrink:0;margin-top:5px;color:var(--teal);}

/* ============ 参数表 ============ */
.table-scroll{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);-webkit-overflow-scrolling:touch;
}
table.spec-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
.spec-table thead th{
  background:var(--blue-light);color:var(--blue-dark);font-size:14px;font-weight:600;
  text-align:left;padding:16px 22px;white-space:nowrap;letter-spacing:.4px;
}
.spec-table td{padding:16px 22px;border-top:1px solid var(--line);color:var(--ink-2);line-height:1.7;}
.spec-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;}
.spec-table tbody tr:nth-child(even){background:#FAFCFF;}
.spec-table tbody tr:hover{background:var(--blue-light);}
.table-note{margin-top:14px;font-size:13px;color:var(--ink-3);}

/* ============ 深色步骤面板 ============ */
.dark-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0E4185 0%,#0F1B2D 100%);
  border-radius:18px;padding:48px;color:#fff;
}
.dark-panel::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.22) 0%,rgba(255,122,47,0) 70%);
}
.dark-panel .sec-title{color:#fff;padding-left:18px;}
.dark-panel .sec-title::before{background:var(--orange);}
.dark-panel .sec-desc{color:rgba(255,255,255,.76);}
.panel-status{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:24px;
  padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);font-size:13px;color:rgba(255,255,255,.86);
}
.panel-status .dot{width:8px;height:8px;border-radius:50%;background:var(--orange);}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px;position:relative;}
.step{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:22px;transition:all .25s ease;
}
.step:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);}
.step-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--orange);font-variant-numeric:tabular-nums;
}
.step h4{font-size:17px;font-weight:600;color:#fff;margin:10px 0 8px;}
.step p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 20px;box-shadow:var(--sh);transition:all .25s ease;
}
.faq-item:hover{border-color:#D3E1F5;}
.faq-item[open]{background:var(--blue-light);border-color:#C6D8F2;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-num{
  width:28px;height:28px;border-radius:9px;flex-shrink:0;
  background:var(--blue-light);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.faq-item[open] .faq-num{background:var(--blue);color:#fff;}
.faq-plus{margin-left:auto;font-size:18px;line-height:1;color:var(--ink-3);transition:transform .25s ease,color .25s ease;}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--blue);}
.faq-answer{
  margin-left:14px;padding:0 0 20px 25px;border-left:3px solid var(--blue);
  font-size:15px;line-height:1.85;color:var(--ink-2);
}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(120deg,var(--blue) 0%,var(--blue-dark) 100%);
  border-radius:18px;padding:48px;color:#fff;
}
.cta-band h2{font-size:28px;font-weight:700;letter-spacing:-.4px;margin-bottom:10px;}
.cta-band p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:560px;}
.cta-band .btn-light{background:#fff;color:var(--blue-dark);box-shadow:0 8px 20px rgba(9,40,80,.24);}
.cta-band .btn-light:hover{background:var(--orange-light);color:var(--orange-dark);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:#F2F6FC;border-top:1px solid var(--line);padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:0;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--ink-2);margin:16px 0;max-width:330px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);
  color:var(--blue);display:flex;align-items:center;justify-content:center;transition:all .25s ease;
}
.footer-social a:hover{background:var(--blue);color:#fff;transform:translateY(-2px);border-color:var(--blue);}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--blue);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--ink-3);
}
.footer-bottom span{font-variant-numeric:tabular-nums;}

/* ============ 响应式 ============ */
@media (max-width:1079px){
  .main-nav{
    position:fixed;top:0;right:0;z-index:70;
    width:min(320px,84vw);height:100vh;margin:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 20px 28px;background:#fff;
    box-shadow:-12px 0 30px rgba(16,42,80,.14);
    transform:translateX(105%);transition:transform .3s ease;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{height:52px;padding:0 14px;font-size:16px;border-radius:10px;}
  .nav-link.is-active{background:var(--blue-light);}
  .nav-link.is-active::after{display:none;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .page-title{font-size:32px;}
  .sec-title{font-size:26px;}
  .tile-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
  .search-box input{width:110px;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .header-inner{height:64px;gap:12px;}
  .brand-text strong{font-size:15px;}
  .header-right .link-arrow{display:none;}
  .hero-band{padding:20px 0 56px;}
  .page-title{font-size:28px;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;min-width:280px;}
  .hero-facts{gap:14px;flex-direction:column;}
  .hero-float{left:8px;bottom:-14px;padding:12px 16px;}
  .section{padding:48px 0;}
  .sec-title{font-size:22px;}
  .sec-desc{font-size:15px;}
  .tile-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .zblock{margin-bottom:48px;}
  .zblock-text h3{font-size:19px;}
  .dark-panel{padding:28px 22px;border-radius:16px;}
  .cta-band{padding:28px 22px;border-radius:16px;}
  .cta-band h2{font-size:22px;}
  .cta-band .btn{width:100%;min-width:280px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .faq-answer{padding-left:18px;}
}
@media (max-width:480px){
  .page-title{font-size:25px;letter-spacing:-.2px;}
  .hero-badge{height:26px;padding:0 12px;font-size:12px;}
  .search-box{display:none;}
  .spec-table thead th,.spec-table td{padding:14px 16px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#1657B8;
  --c-primary-dark:#0E4185;
  --c-primary-soft:#E8F1FE;
  --c-accent:#FF7A2F;
  --c-accent-dark:#F26A18;
  --c-teal:#2BB3A3;
  --c-bg:#F7F9FC;
  --c-white:#FFFFFF;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A97A8;
  --c-line:#E3EAF4;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:8px;
  --r-img:12px;
  --sh-card:0 6px 18px rgba(16,42,80,.08);
  --sh-hover:0 12px 28px rgba(16,42,80,.14);
  --sh-header:0 4px 14px rgba(16,42,80,.10);
  --ease:.25s ease;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
a:hover{color:var(--c-primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
*:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:var(--c-primary-soft);color:var(--c-primary-dark);}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* ===== 容器与板块 ===== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sec{padding:88px 0;}
.sec--soft{background:var(--c-bg);}
.sec--blue{background:var(--c-primary-soft);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-title{display:flex;align-items:center;gap:12px;font-size:32px;font-weight:700;letter-spacing:-.5px;line-height:1.35;color:var(--c-text);}
.sec-title::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--c-primary);flex:0 0 auto;}
.sec-desc{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px;}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-header);background:rgba(255,255,255,.99);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}

.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.2px;color:var(--c-text);}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.4px;}
.brand:hover .brand-mark{background:var(--c-primary-dark);}
.brand:hover .brand-text strong{color:var(--c-primary-dark);}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  padding:0 13px;font-size:15px;font-weight:500;color:var(--c-text-2);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;border-radius:2px;
  background:transparent;transition:background var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{background:#C6D9F5;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{background:var(--c-primary);}

.header-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:36px;min-width:196px;
  padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:var(--c-bg);color:var(--c-text-3);transition:var(--ease);
}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,87,184,.12);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--c-text);}
.search-box input::placeholder{color:var(--c-text-3);}

.link-arrow{display:inline-flex;align-items:center;gap:5px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow::after{content:"\2192";font-size:15px;transition:transform var(--ease);}
.link-arrow:hover{color:var(--c-primary-dark);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.link-arrow:hover::after{transform:translateX(3px);}

.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:#fff;color:var(--c-text);align-items:center;justify-content:center;transition:var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none !important;}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,122,47,.26);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:#C6D9F5;}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary);}
.btn-light{background:#fff;color:var(--c-primary-dark);}
.btn-light:hover{background:#F2F6FC;color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn-sm{height:36px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);}
.btn-block{width:100%;}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge--dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}
.badge--hot{background:#FFF1E8;color:#D95F14;}
.badge--hot::before{background:var(--c-accent);}
.badge--ok{background:#E6F6F4;color:#1E8E80;}
.badge--ok::before{background:var(--c-teal);}

/* ===== 面包屑 ===== */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:#C9D3E0;}
.crumb .cur{color:var(--c-primary);font-weight:600;}

/* ===== Hero 引言区 ===== */
.hero{padding:40px 0 76px;background:linear-gradient(180deg,#F7F9FC 0%,#FFFFFF 100%);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero-copy h1{font-size:40px;line-height:1.32;font-weight:700;letter-spacing:-.5px;margin:16px 0 18px;}
.hero-sub{font-size:17px;color:var(--c-text-2);line-height:1.85;max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-trust{display:grid;grid-template-columns:repeat(3,auto);gap:24px;margin-top:32px;justify-content:start;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);font-weight:500;}
.trust-item svg{color:var(--c-primary);flex:0 0 auto;}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  box-shadow:0 18px 40px rgba(16,42,80,.16);
}
.float-card{
  position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:14px 20px;box-shadow:var(--sh-hover);
  display:flex;align-items:center;gap:12px;
}
.float-card b{font-size:28px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1;}
.float-card span{font-size:13px;color:var(--c-text-3);}
.float-card::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(255,122,47,.16);}

/* ===== 活动横幅窄条 ===== */
.promo-strip{
  background:linear-gradient(90deg,#FF7A2F 0%,#FF8B49 26%,#1657B8 100%);
  border-radius:var(--r-card);padding:26px 32px;color:#fff;
  display:grid;grid-template-columns:1.25fr auto auto;gap:32px;align-items:center;
  box-shadow:0 14px 34px rgba(22,87,184,.20);
}
.strip-text{display:flex;align-items:flex-start;gap:14px;}
.strip-dot{width:10px;height:10px;border-radius:50%;background:#fff;margin-top:8px;flex:0 0 auto;box-shadow:0 0 0 5px rgba(255,255,255,.24);}
.strip-text strong{display:block;font-size:20px;font-weight:700;letter-spacing:-.2px;}
.strip-text p{font-size:14px;color:rgba(255,255,255,.86);margin-top:4px;}
.countdown{display:flex;gap:10px;}
.cd-item{background:#fff;border-radius:var(--r-input);min-width:58px;padding:7px 8px;text-align:center;box-shadow:0 6px 14px rgba(14,65,133,.20);}
.cd-item b{display:block;font-size:22px;font-weight:700;color:var(--c-primary-dark);font-variant-numeric:tabular-nums;line-height:1.2;}
.cd-item span{font-size:11px;color:var(--c-text-3);}

/* ===== 优惠阶梯（纵向） ===== */
.ladder{display:flex;flex-direction:column;gap:20px;}
.step{
  display:grid;grid-template-columns:88px 1fr auto;gap:26px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 30px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#C6D9F5;}
.step-no{
  width:72px;height:72px;border-radius:16px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.step--hot{border-color:#FFD3B8;background:linear-gradient(180deg,#FFFFFF 0%,#FFF9F5 100%);}
.step--hot .step-no{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(255,122,47,.30);}
.step-body h3{font-size:20px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.step-body > p{font-size:15px;color:var(--c-text-2);margin-top:6px;}
.step-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.step-points li{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);
  background:var(--c-bg);border-radius:var(--r-pill);padding:6px 14px;
}
.step-points svg{color:var(--c-teal);flex:0 0 auto;}
.step-action{display:flex;flex-direction:column;align-items:flex-end;gap:8px;font-size:13px;color:var(--c-text-3);}

/* ===== 深色数据面板 ===== */
.stat-panel{
  background:#0E4185;border-radius:var(--r-card);padding:40px 36px;color:#fff;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  border:1px solid #12498F;
}
.stat{position:relative;padding-left:18px;}
.stat::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--c-accent);}
.stat b{display:block;font-size:38px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-1px;}
.stat span{display:block;margin-top:8px;font-size:13px;color:#B9CCE8;}

/* ===== 权益对照清单 ===== */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-card);transition:box-shadow var(--ease),transform var(--ease);
}
.compare-col:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.compare-col.is-featured{border-color:#C6D9F5;background:linear-gradient(180deg,#FFFFFF 0%,#F7FAFF 100%);}
.compare-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line);margin-bottom:8px;}
.compare-head h3{font-size:19px;font-weight:700;}
.compare-head p{font-size:13px;color:var(--c-text-3);margin-top:2px;}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;padding:13px 0;
  border-bottom:1px dashed var(--c-line);font-size:15px;color:var(--c-text-2);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list svg{flex:0 0 auto;margin-top:3px;}
.check-list .yes{color:var(--c-teal);}
.check-list .no{color:#C9D3E0;}

/* ===== FAQ ===== */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start;}
.faq details{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.faq details:hover{border-color:#C6D9F5;}
.faq details[open]{background:var(--c-primary-soft);border-color:#C6D9F5;box-shadow:0 10px 24px rgba(16,42,80,.10);border-left:3px solid var(--c-primary);}
.faq summary{
  display:flex;align-items:center;gap:12px;padding:20px 22px;cursor:pointer;
  list-style:none;font-size:16px;font-weight:600;color:var(--c-text);
}
.faq summary::-webkit-details-marker{display:none;}
.faq .q-no{
  width:28px;height:28px;border-radius:9px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;transition:var(--ease);
}
.faq details[open] .q-no{background:var(--c-primary);color:#fff;}
.plus{position:relative;width:16px;height:16px;flex:0 0 auto;margin-left:auto;}
.plus::before,.plus::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform var(--ease);}
.plus::before{top:7px;left:0;width:16px;height:2px;}
.plus::after{left:7px;top:0;width:2px;height:16px;}
.faq details[open] .plus::after{transform:scaleY(0);}
.faq .answer{padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ===== CTA 条 ===== */
.cta-band{
  position:relative;overflow:hidden;
  background:#0E4185;border-radius:18px;padding:48px;
  display:grid;grid-template-columns:1.5fr auto;gap:36px;align-items:center;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-band h2{font-size:28px;font-weight:700;letter-spacing:-.4px;line-height:1.4;}
.cta-band p{margin-top:12px;font-size:15px;color:#B9CCE8;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-note{margin-top:20px;font-size:13px;color:#8FA9D0;}

/* ===== 页脚 ===== */
.site-footer{background:#F2F6FC;border-top:1px solid var(--c-line);padding-top:56px;color:var(--c-text-2);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px;}
.footer-brand p{font-size:14px;line-height:1.85;margin:16px 0 18px;max-width:330px;color:var(--c-text-2);}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);transition:var(--ease);
}
.footer-social a:hover{border-color:var(--c-primary);background:var(--c-primary-soft);transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:16px;}
.footer-col li{margin-bottom:11px;font-size:14px;}
.footer-col a{color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.footer-meta{font-size:13px;color:var(--c-text-3);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:18px 0;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .search-box{display:none;}
}
@media (max-width:1023px){
  .sec{padding:64px 0;}
  .hero{padding:32px 0 60px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-copy h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .sec-title{font-size:26px;}
  .promo-strip{grid-template-columns:1fr;gap:22px;padding:24px;}
  .stat-panel{grid-template-columns:repeat(2,1fr);gap:24px;padding:32px 26px;}
  .compare{grid-template-columns:1fr;}
  .faq{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:24px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}

  .header-right .link-arrow{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:72px;right:0;bottom:0;width:min(320px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:18px;margin-left:0;overflow-y:auto;z-index:70;
    transform:translateX(105%);transition:transform .28s ease;
    box-shadow:-10px 0 30px rgba(16,42,80,.14);
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{height:auto;padding:14px 16px;border-radius:12px;font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link:hover{background:var(--c-primary-soft);}
  .nav-link.is-active{background:var(--c-primary-soft);}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .sec{padding:48px 0;}
  .hero-copy h1{font-size:28px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;min-width:280px;}
  .hero-trust{grid-template-columns:1fr;gap:12px;justify-content:stretch;}
  .sec-title{font-size:22px;}
  .sec-title::before{height:18px;}
  .sec-head{margin-bottom:28px;}
  .step{grid-template-columns:1fr;gap:18px;padding:24px 20px;}
  .step-no{width:56px;height:56px;font-size:22px;border-radius:14px;}
  .step-action{align-items:flex-start;}
  .stat-panel{grid-template-columns:1fr 1fr;padding:28px 20px;}
  .stat b{font-size:30px;}
  .float-card{left:0;bottom:-14px;padding:12px 16px;}
  .countdown{flex-wrap:wrap;}
  .cd-item{min-width:52px;}
  .cta-band{padding:28px 22px;border-radius:14px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .faq .answer{padding-left:22px;}
}
@media (max-width:479px){
  .hero-copy h1{font-size:25px;}
  .brand-text strong{font-size:14px;}
  .brand-text em{font-size:10px;}
  .btn{font-size:14px;padding:0 18px;}
  .stat-panel{grid-template-columns:1fr;}
  .badge{font-size:11px;}
}

/* roulang page: category4 */
:root{
  --brand:#1657B8;
  --brand-dark:#0E4185;
  --brand-light:#E8F1FE;
  --accent:#FF7A2F;
  --accent-dark:#E9681F;
  --teal:#2BB3A3;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 6px 18px rgba(16,42,80,.08);
  --shadow-hover:0 12px 28px rgba(16,42,80,.14);
  --shadow-nav:0 4px 14px rgba(16,42,80,.10);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand);text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.nums{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .25s ease,color .25s ease,box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34);}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.24);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C7D9F3;}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);}
.btn-dark{background:var(--brand);color:#fff;}
.btn-dark:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-white{background:#fff;color:var(--brand-dark);}
.btn-white:hover{background:#F2F7FF;color:var(--brand-dark);transform:translateY(-1px);}
.btn-sm{height:36px;padding:0 18px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);}
.link-arrow::after{content:"";width:14px;height:14px;background:currentColor;-webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12h14M13 6l6 6-6 6'/></svg>") center/contain no-repeat;mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12h14M13 6l6 6-6 6'/></svg>") center/contain no-repeat;}
.link-arrow:hover{color:var(--brand-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
  background:var(--brand-light);color:var(--brand-dark);white-space:nowrap;
}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.badge-teal{background:#E4F7F4;color:#1E8B7E;}
.badge-accent{background:#FFF0E6;color:#C6591A;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-nav);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--ink);}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:1.5px;}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .25s ease,background-color .25s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link.is-active{color:var(--brand);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--ink-3);
  transition:border-color .25s ease,background-color .25s ease,box-shadow .25s ease;
}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(22,87,184,.12);}
.search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#C9D3E0;}
.breadcrumb .current{color:var(--brand);font-weight:600;}

/* ---------- 页面首屏 ---------- */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,#F4F8FE 100%);
  border-bottom:1px solid var(--line);
  padding:48px 0 64px;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.hero-copy h1{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:-.5px;margin:16px 0 18px;}
.hero-copy .lead{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 24px;}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;padding-top:22px;border-top:1px solid var(--line);}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);font-weight:600;}
.trust-item .ic{
  width:30px;height:30px;border-radius:9px;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;box-shadow:var(--shadow);}
.float-card{
  position:absolute;left:-18px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 18px;box-shadow:var(--shadow);min-width:180px;
}
.float-card strong{display:block;font-size:24px;font-weight:800;color:var(--brand-dark);line-height:1.2;}
.float-card span{font-size:13px;color:var(--ink-3);}
.float-card .pulse{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-right:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  position:relative;font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.4px;
  padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-2);}
.section-head.row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;}

/* ---------- 支持渠道卡片 ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.channel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;gap:12px;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F7;}
.channel-card .ic{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
}
.channel-card h3{font-size:18px;font-weight:600;}
.channel-card p{font-size:14px;line-height:1.8;color:var(--ink-2);}
.channel-card .link-arrow{font-size:14px;margin-top:auto;}

/* ---------- 帮助主体：目录 + FAQ ---------- */
.help-layout{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:start;}
.toc{
  position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);
}
.toc h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;
  font-size:14px;color:var(--ink-2);border-left:3px solid transparent;
}
.toc a:hover{background:var(--brand-light);color:var(--brand-dark);}
.toc a.is-current{background:var(--brand-light);color:var(--brand-dark);font-weight:600;border-left-color:var(--brand);}
.toc .toc-num{
  display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:7px;
  background:#EDF3FC;color:var(--brand);font-size:12px;font-weight:700;flex:0 0 auto;
}
.toc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);line-height:1.7;}

.faq-group{margin-bottom:40px;scroll-margin-top:100px;}
.faq-group h2{
  position:relative;font-size:24px;font-weight:700;padding-left:14px;margin-bottom:18px;letter-spacing:-.3px;
}
.faq-group h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:18px;border-radius:2px;background:var(--brand);}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.faq-item:hover{border-color:#CFE0F7;box-shadow:var(--shadow);}
.faq-item[open]{background:var(--brand-light);border-color:#CFE0F7;}
.faq-item summary{
  display:flex;align-items:flex-start;gap:14px;padding:18px 20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{display:none;content:"";}
.faq-num{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;
  background:var(--brand-light);color:var(--brand-dark);font-size:13px;font-weight:700;flex:0 0 auto;
  font-variant-numeric:tabular-nums;
}
.faq-item[open] .faq-num{background:var(--brand);color:#fff;}
.faq-icon{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid #C9D3E0;
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);font-size:14px;font-weight:700;
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item[open] .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff;transform:rotate(180deg);}
.faq-body{
  padding:0 20px 20px 62px;font-size:15px;line-height:1.85;color:var(--ink-2);
  border-left:3px solid transparent;
}
.faq-item[open] .faq-body{border-left-color:var(--brand);}
.faq-body p+p{margin-top:10px;}
.faq-body ul{margin:10px 0 0;display:grid;gap:6px;}
.faq-body li{position:relative;padding-left:16px;}
.faq-body li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--teal);}
.faq-meta{margin-top:12px;font-size:13px;color:var(--ink-3);}

/* ---------- 操作指引 ---------- */
.guide-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;}
.guide-media img{width:100%;aspect-ratio:16/11;object-fit:cover;box-shadow:var(--shadow);}
.step-list{display:grid;gap:18px;}
.step{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ---------- 深色信息面板 ---------- */
.dark-panel{
  background:linear-gradient(135deg,#0E2444 0%,#123A6B 100%);
  border-radius:18px;padding:44px;color:#DCE8F8;position:relative;overflow:hidden;
}
.dark-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.28) 0%,rgba(255,122,47,0) 70%);
}
.dark-panel h2{font-size:26px;color:#fff;font-weight:700;margin-bottom:12px;letter-spacing:-.3px;}
.dark-panel .sub{font-size:15px;line-height:1.85;color:#A9C1E0;max-width:640px;}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px;position:relative;z-index:1;}
.stat{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:18px;
}
.stat strong{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums;}
.stat span{font-size:13px;color:#A9C1E0;}
.stat .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:8px;}

/* ---------- 联系入口 ---------- */
.contact-wrap{
  display:grid;grid-template-columns:5fr 7fr;gap:0;background:#fff;border:1px solid var(--line);
  border-radius:18px;overflow:hidden;box-shadow:var(--shadow);
}
.contact-side{
  background:linear-gradient(160deg,var(--brand-light) 0%,#F7FBFF 100%);
  padding:36px;border-right:1px solid var(--line);
}
.contact-side .avatar{
  width:56px;height:56px;border-radius:16px;background:var(--brand);color:#fff;display:inline-flex;
  align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:18px;
}
.contact-side h3{font-size:20px;font-weight:700;margin-bottom:8px;}
.contact-side .role{font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.contact-side p{font-size:14px;line-height:1.85;color:var(--ink-2);}
.contact-list{margin-top:20px;display:grid;gap:12px;}
.contact-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);}
.contact-list .ic{width:26px;height:26px;border-radius:8px;background:#fff;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--brand);flex:0 0 auto;}
.contact-form{padding:36px;}
.contact-form h3{font-size:18px;font-weight:700;margin-bottom:6px;}
.contact-form .hint{font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--ink-2);}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:#fff;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field textarea{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(--brand);box-shadow:0 0 0 3px rgba(22,87,184,.14);
}
.field.is-error input,.field.is-error textarea{border-color:#D64545;}
.err-msg{font-size:12px;color:#D64545;display:none;}
.field.is-error .err-msg{display:block;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-2);margin:6px 0 20px;}
.check input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(90deg,var(--accent) 0%,#F26A1B 45%,var(--brand) 100%);
  border-radius:18px;padding:36px 40px;display:flex;align-items:center;gap:28px;flex-wrap:wrap;
  color:#fff;box-shadow:0 14px 30px rgba(22,87,184,.18);
}
.cta-band h2{font-size:24px;font-weight:700;letter-spacing:-.3px;}
.cta-band p{font-size:14px;color:rgba(255,255,255,.9);margin-top:6px;}
.cta-band .cta-actions{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#F2F6FC;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--ink-2);max-width:300px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);
  transition:background-color .25s ease,transform .25s ease,border-color .25s ease;
}
.footer-social a:hover{background:var(--brand-light);border-color:#CFE0F7;transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--ink);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-col p{font-size:14px;color:var(--ink-2);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0;font-size:13px;color:var(--ink-3);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .header-inner{height:64px;gap:16px;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:0;right:-100%;width:82%;max-width:340px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 20px 24px;box-shadow:-12px 0 30px rgba(16,42,80,.14);
    transition:right .3s ease;overflow-y:auto;z-index:70;
  }
  .main-nav.is-open{right:0;}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:10px;}
  .nav-link.is-active::after{left:16px;right:auto;width:22px;bottom:8px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-copy h1{font-size:32px;}
  .help-layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .guide-grid{grid-template-columns:1fr;}
  .contact-wrap{grid-template-columns:1fr;}
  .contact-side{border-right:0;border-bottom:1px solid var(--line);}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
  .dark-panel{padding:32px;}
  .cta-band{padding:28px;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .hero-copy h1{font-size:28px;}
  .hero-copy .lead{font-size:16px;}
  .hero-actions .btn{width:100%;min-width:280px;}
  .float-card{left:12px;bottom:12px;padding:10px 14px;min-width:150px;}
  .float-card strong{font-size:20px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .section-head.row{flex-direction:column;align-items:flex-start;}
  .channel-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .faq-item summary{padding:16px;font-size:15px;}
  .faq-body{padding:0 16px 18px 16px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .cta-actions{margin-left:0;width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .dark-panel{padding:24px;}
  .contact-side,.contact-form{padding:24px;}
}
@media (max-width:480px){
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:1px;}
  .hero-copy h1{font-size:24px;}
  .trust-row{gap:16px;}
  .trust-item{font-size:13px;}
  .step{padding:16px;gap:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category5 */
/* ============ 设计变量 ============ */
:root{
  --blue:#1657B8;
  --blue-dark:#0E4185;
  --blue-light:#E8F1FE;
  --orange:#FF7A2F;
  --orange-dark:#E8661C;
  --orange-light:#FFF2EA;
  --teal:#2BB3A3;
  --teal-light:#E6F7F5;
  --teal-ink:#1F5B57;
  --bg:#F7F9FC;
  --ink:#0F1B2D;
  --ink-2:#4A5A70;
  --ink-3:#8A97A8;
  --line:#E3EAF4;
  --navy:#0A1E38;
  --r-lg:14px;
  --r-sm:10px;
  --r-xs:8px;
  --sh:0 6px 18px rgba(16,42,80,.08);
  --sh-h:0 12px 28px rgba(16,42,80,.14);
  --sec:88px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;}
a:hover{color:var(--blue-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
table{border-collapse:collapse;width:100%;}
section[id]{scroll-margin-top:96px;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}

/* ============ 容器与板块 ============ */
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section.band{background:var(--bg);}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head h2{
  position:relative;
  padding-left:18px;
  font-size:32px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:2px;background:var(--blue);
}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-2);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 14px rgba(16,42,80,.10);}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--blue);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-light);color:var(--blue);border:1px solid #D6E6FB;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18;}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.2px;}
.brand-text em{font-size:12px;font-style:normal;color:var(--ink-3);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:10px;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--r-xs);
  font-size:15px;color:var(--ink-2);white-space:nowrap;
}
.nav-link:hover{background:var(--blue-light);color:var(--blue);}
.nav-link.is-active{color:var(--blue);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-4px;height:2px;border-radius:2px;background:var(--blue);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:#F3F6FC;color:var(--ink-3);
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.search-box:focus-within{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px var(--blue-light);}
.search-box input{border:0;outline:0;background:transparent;width:150px;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-xs);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  align-items:center;justify-content:center;transition:.25s;
}
.nav-toggle:hover{background:var(--blue-light);color:var(--blue);border-color:#CFE2FB;}
.nav-mask{
  position:fixed;inset:0;z-index:65;background:rgba(10,30,56,.42);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.nav-mask.is-open{opacity:1;pointer-events:auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.28);}
.btn-primary:hover{background:#F06A1B;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.34);}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(255,122,47,.24);}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost{background:#fff;color:var(--blue);border-color:#C9DDF8;}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark);border-color:#A9CCF5;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:999px;}
.btn-lg{height:50px;padding:0 30px;font-size:16px;}
.btn-white{background:#fff;color:var(--blue-dark);border-color:#fff;}
.btn-white:hover{background:#F2F6FC;color:var(--blue-dark);transform:translateY(-1px);}
.btn-line-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.62);}
.btn-line-white:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--blue);}
.link-arrow:hover{color:var(--blue-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:999px;font-size:13px;font-weight:600;
  background:var(--blue-light);color:var(--blue);
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--orange);display:inline-block;flex:0 0 auto;}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--blue-light);color:var(--blue);}
.tag-warn{background:var(--orange-light);color:#C24E15;}
.tag-ok{background:var(--teal-light);color:#1F8E81;}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:20px 0 0;font-size:13px;color:var(--ink-3);}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:#C9D3E0;}
.crumb .cur{color:var(--blue);font-weight:600;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:34px 0 66px;}
.hero::before{
  content:"";position:absolute;top:-140px;right:-90px;width:640px;height:470px;
  background:radial-gradient(closest-side,#E9F2FE,rgba(233,242,254,0));pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.hero-copy h1{margin:18px 0 0;font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.5px;}
.hero-sub{margin-top:16px;max-width:580px;font-size:17px;line-height:1.85;color:var(--ink-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;margin-top:28px;}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.trust-row svg{color:var(--teal);flex:0 0 auto;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:18px;box-shadow:0 18px 40px rgba(16,42,80,.16);
}
.float-card{
  position:absolute;left:-18px;bottom:26px;
  display:flex;flex-direction:column;gap:2px;
  padding:14px 18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:0 12px 28px rgba(16,42,80,.16);
}
.float-card strong{font-size:24px;line-height:1.2;color:var(--blue);letter-spacing:-.5px;font-variant-numeric:tabular-nums;}
.float-card span{font-size:13px;color:var(--ink-3);}

/* ============ 数据面板 ============ */
.stat-panel{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:38px 26px;border-radius:20px;background:var(--navy);
  box-shadow:0 18px 40px rgba(10,30,56,.22);
}
.stat-item{position:relative;text-align:center;}
.stat-item + .stat-item::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:1px;height:46px;background:rgba(255,255,255,.12);
}
.stat-num{font-size:32px;font-weight:700;color:#fff;line-height:1.15;letter-spacing:-.8px;font-variant-numeric:tabular-nums;}
.stat-num span{margin-left:2px;font-size:17px;letter-spacing:0;color:var(--orange);}
.stat-label{margin-top:8px;font-size:14px;color:#9FB3CC;}

/* ============ 条款列表 ============ */
.clause-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.clause{
  display:flex;gap:18px;padding:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.clause:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:#CFE2FB;}
.clause-no{
  flex:0 0 44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-light);color:var(--blue);
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
}
.clause-body h3{font-size:19px;font-weight:600;margin-bottom:8px;line-height:1.5;}
.clause-body p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ 提示条 ============ */
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.note{
  display:flex;gap:14px;padding:22px;
  background:var(--teal-light);border-left:3px solid var(--teal);
  border-radius:0 var(--r-lg) var(--r-lg) 0;
}
.note svg{flex:0 0 auto;margin-top:4px;color:#1F8E81;}
.note h3{font-size:16px;font-weight:600;margin-bottom:6px;color:#154A46;}
.note p{font-size:14px;line-height:1.8;color:var(--teal-ink);}

/* ============ 风险场景卡 ============ */
.risk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.risk-card{
  position:relative;overflow:hidden;padding:28px 24px 24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh);transition:transform .25s ease,box-shadow .25s ease;
}
.risk-card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);}
.risk-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--blue);}
.risk-card.warn::before{background:var(--orange);}
.risk-card.ok::before{background:var(--teal);}
.risk-card h3{margin:14px 0 10px;font-size:18px;font-weight:600;line-height:1.5;}
.risk-card p{font-size:15px;line-height:1.85;color:var(--ink-2);}
.risk-foot{
  display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:background-color .25s ease,border-color .25s ease;
}
.faq-item[open]{background:var(--blue-light);border-color:#CFE2FB;border-left:3px solid var(--blue);}
.faq-q{
  display:flex;align-items:center;gap:14px;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-idx{
  flex:0 0 28px;height:28px;border-radius:var(--r-xs);
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;transition:.25s;
}
.faq-item[open] .faq-idx{background:var(--blue);color:#fff;}
.faq-mark{margin-left:auto;font-size:20px;line-height:1;color:var(--ink-3);transition:transform .25s ease;}
.faq-item[open] .faq-mark{transform:rotate(45deg);color:var(--blue);}
.faq-a{padding:0 22px 20px 64px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:44px;border-radius:22px;
  background:linear-gradient(108deg,#FF7A2F 0%,#E8661C 38%,#1657B8 100%);
  box-shadow:0 18px 40px rgba(22,87,184,.22);
}
.cta-band h2{font-size:26px;font-weight:700;line-height:1.4;letter-spacing:-.3px;color:#fff;}
.cta-band p{margin-top:10px;max-width:600px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.9);}
.cta-actions{display:flex;flex:0 0 auto;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{margin-top:var(--sec);padding:56px 0 0;background:#F2F6FC;border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:32px;}
.footer-brand .brand-text strong{font-size:15px;}
.footer-brand p{margin:16px 0 18px;max-width:340px;font-size:14px;line-height:1.85;color:var(--ink-2);}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.footer-social a:hover{background:var(--blue-light);border-color:#CFE2FB;color:var(--blue);}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--ink);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--blue);}
.footer-note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--ink-3);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding:18px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sec:64px;}
  .main-nav{
    position:fixed;top:0;right:0;z-index:70;
    width:300px;max-width:86vw;height:100vh;
    flex-direction:column;align-items:stretch;gap:6px;
    margin-left:0;padding:88px 20px 24px;
    background:#fff;box-shadow:-12px 0 30px rgba(16,42,80,.14);
    transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:12px 14px;font-size:16px;}
  .nav-link:hover{background:var(--blue-light);}
  .nav-link.is-active{background:var(--blue-light);}
  .nav-link.is-active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .search-box{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-copy h1{font-size:32px;}
  .stat-panel{grid-template-columns:repeat(2,1fr);gap:28px 16px;padding:32px 20px;}
  .stat-item + .stat-item::before{display:none;}
  .clause-list{grid-template-columns:1fr;}
  .note-grid{grid-template-columns:1fr;}
  .risk-grid{grid-template-columns:1fr 1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section-head h2{font-size:24px;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  :root{--sec:48px;}
  .hero{padding:22px 0 42px;}
  .hero-copy h1{font-size:28px;letter-spacing:-.3px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;max-width:340px;}
  .trust-row{gap:16px 22px;}
  .float-card{left:12px;bottom:12px;padding:12px 16px;}
  .stat-num{font-size:28px;}
  .stat-label{font-size:13px;}
  .risk-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .cta-band h2{font-size:22px;}
  .faq-a{padding-left:22px;}
}
@media (max-width:480px){
  .brand-text em{letter-spacing:1px;}
  .hero-copy h1{font-size:25px;}
  .section-head h2{font-size:21px;}
  .clause{padding:20px 18px;gap:14px;}
  .clause-no{flex:0 0 38px;height:38px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}