/* roulang page: index */
:root{
  --brand:#2b5ce6;
  --brand-2:#4a7bff;
  --brand-deep:#17379c;
  --accent:#10a37f;
  --ink:#111f33;
  --ink-2:#31435c;
  --muted:#6c7c93;
  --line:#e2e8f2;
  --bg:#f5f7fc;
  --surface:#ffffff;
  --dark:#0c1626;
  --dark-2:#132239;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-lg:0 24px 60px rgba(12,22,38,.14);
  --shadow:0 10px 28px rgba(12,22,38,.08);
  --shadow-sm:0 2px 8px rgba(12,22,38,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(43,92,230,.35);outline-offset:2px}
.container.site-container{max-width:1220px;padding-left:22px;padding-right:22px}
.section{padding:74px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:790px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);color:var(--ink)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(12,22,38,.05)}
.nav-bar{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--brand),#6f9bff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:19px;box-shadow:0 6px 16px rgba(43,92,230,.28)}
.brand-text strong{display:block;font-size:16.5px;line-height:1.3;letter-spacing:.02em}
.brand-text small{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.06em;line-height:1.5}
.nav-toggle{display:none;width:42px;height:38px;margin-left:auto;border:1px solid var(--line);border-radius:10px;background:#f7f9ff;padding:9px 10px;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-2);transition:background .2s}
.nav-toggle:hover span{background:var(--brand)}
.nav-main{display:flex;align-items:center;gap:10px;margin-left:auto;flex:1 1 auto;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-item > a{display:inline-block;padding:9px 14px;border-radius:9px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s}
.nav-item > a:hover{background:#eef3ff;color:var(--brand)}
.nav-item.is-active > a{color:var(--brand);background:#eaf0ff;font-weight:600}
.mega-panel{position:absolute;top:calc(100% + 10px);left:0;width:min(680px,86vw);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s ease,transform .22s ease,visibility .22s;z-index:120}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;letter-spacing:.12em;color:var(--muted);font-weight:700;margin-bottom:10px;text-transform:uppercase}
.mega-col a{display:block;padding:8px 10px;border-radius:8px;font-size:14.5px;color:var(--ink-2);transition:background .2s,color .2s}
.mega-col a:hover{background:#f1f5ff;color:var(--brand)}
.mega-note{grid-column:1 / -1;background:#f6f9ff;border:1px dashed #cfdcff;border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--ink-2)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;cursor:pointer}
.btn-primary-c{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(43,92,230,.28)}
.btn-primary-c:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(43,92,230,.34)}
.btn-primary-c:active{transform:translateY(0);box-shadow:0 6px 16px rgba(43,92,230,.3)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px)}
.btn-outline-c{background:#fff;color:var(--brand);border-color:#cbd9ff}
.btn-outline-c:hover{background:#f1f5ff;border-color:var(--brand);transform:translateY(-2px)}
.btn-block{width:100%}
.nav-cta{padding:10px 18px;font-size:14.5px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 70px;background:linear-gradient(158deg,#0b1524 0%,#122647 55%,#1a3b6d 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(74,123,255,.35),transparent 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:start;position:relative;z-index:2}
.hero-copy h1{font-size:clamp(25px,3.1vw,38px);line-height:1.42;letter-spacing:.01em;color:#fff}
.hero-lead{margin-top:18px;color:rgba(226,236,255,.86);font-size:15.8px;line-height:1.95}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-badges li{padding:7px 14px;border-radius:99px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);font-size:13px;color:#e8efff}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-quals{margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
.hero-quals-title{font-size:13px;letter-spacing:.1em;color:rgba(190,208,240,.9);margin-bottom:12px}
.hero-quals ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 20px}
.hero-quals li{position:relative;padding-left:20px;font-size:14.2px;color:rgba(226,236,255,.9);line-height:1.7;min-width:0}
.hero-quals li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:linear-gradient(140deg,#4a7bff,#10d5a6)}
.apply-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:28px;color:var(--ink);position:relative}
.apply-title{font-size:19px}
.apply-sub{margin-top:8px;font-size:13.8px;color:var(--muted)}
.apply-form{margin-top:20px;display:grid;gap:14px}
.apply-form label{display:block;font-size:13.5px;color:var(--ink-2);font-weight:600}
.apply-form input,.apply-form select{width:100%;margin-top:7px;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#f9fbff;font-size:14.5px;color:var(--ink);transition:border-color .2s,box-shadow .2s,background .2s}
.apply-form input::placeholder{color:#a5b2c5}
.apply-form input:focus,.apply-form select:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(43,92,230,.12)}
.apply-note{margin-top:12px;font-size:12.8px;color:var(--muted);line-height:1.7}

/* ---------- 下载 ---------- */
.download-band{padding:0 0 20px;margin-top:-38px;position:relative;z-index:5}
.download-inner{display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.download-copy h2{font-size:22px}
.download-copy p{margin-top:10px;font-size:14.6px;color:var(--muted)}
.download-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}
.dl-btn{display:flex;align-items:center;gap:11px;padding:14px;border-radius:13px;border:1px solid var(--line);background:#f9fbff;transition:transform .2s,border-color .2s,box-shadow .2s,background .2s;min-width:0}
.dl-btn:hover{transform:translateY(-3px);border-color:#b9cdff;background:#f2f6ff;box-shadow:0 12px 24px rgba(43,92,230,.14)}
.dl-btn:active{transform:translateY(0)}
.dl-ico{width:38px;height:38px;flex:0 0 38px;border-radius:11px;background:linear-gradient(140deg,var(--brand),#6f9bff);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700;letter-spacing:.02em}
.dl-btn strong{display:block;font-size:14.2px;line-height:1.4;color:var(--ink)}
.dl-btn small{display:block;font-size:11.8px;color:var(--muted);line-height:1.5}

/* ---------- 功能亮点 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);transition:transform .22s,box-shadow .22s,border-color .22s;min-width:0}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcff}
.feature-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand);background:#eef4ff;border-radius:7px;padding:3px 9px;margin-bottom:12px}
.feature-card h3{font-size:17px;margin-bottom:9px}
.feature-card p{color:var(--muted);font-size:14.6px}

/* ---------- 场景矩阵 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.scene-card{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:border-color .22s,box-shadow .22s,transform .22s;min-width:0}
.scene-card:hover{border-color:#cfdcff;box-shadow:var(--shadow);transform:translateY(-3px)}
.scene-ico{width:46px;height:46px;flex:0 0 46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:#fff;background:linear-gradient(140deg,#1c3f8f,#2b5ce6)}
.scene-card h3{font-size:16.5px;margin-bottom:8px}
.scene-card p{font-size:14.4px;color:var(--muted)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 24px;box-shadow:var(--shadow-sm);min-width:0;transition:border-color .22s,box-shadow .22s}
.step:hover{border-color:#cfdcff;box-shadow:var(--shadow)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:#eef4ff;color:var(--brand);font-weight:700;font-size:16px;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14.2px;color:var(--muted)}

/* ---------- 演示窗口 ---------- */
.demo-wrap{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
.demo-copy h2{font-size:clamp(21px,2.3vw,28px)}
.demo-copy p{margin-top:14px;color:var(--muted);font-size:15px}
.demo-list{margin-top:22px;display:grid;gap:12px}
.demo-list li{position:relative;padding-left:22px;font-size:14.6px;color:var(--ink-2)}
.demo-list li::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:3px;background:linear-gradient(140deg,var(--brand),#6f9bff)}
.window{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}
.window-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#f2f5fb;border-bottom:1px solid var(--line)}
.window-bar .dot{width:9px;height:9px;border-radius:50%;background:#d6dded}
.window-title{margin-left:8px;font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.window-body{padding:22px}
.win-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px}
.win-row:last-child{border-bottom:0}
.win-row span:first-child{color:var(--muted)}
.win-tag{font-size:12px;padding:3px 9px;border-radius:99px;background:#eef4ff;color:var(--brand);font-weight:600}
.win-tag.warn{background:#fff3e8;color:#c1680d}
.win-tag.ok{background:#e8f8f2;color:#0b8a6c}
.meter{margin-top:16px}
.meter-head{display:flex;justify-content:space-between;font-size:12.6px;color:var(--muted);margin-bottom:7px}
.meter-track{height:8px;border-radius:99px;background:#eef2f9;overflow:hidden}
.meter-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,#10a37f,#4ad6b0);width:62%}
.meter-fill.blue{background:linear-gradient(90deg,#2b5ce6,#7ba2ff);width:44%}
.demo-hint{margin-top:14px;font-size:12.4px;color:var(--muted)}

/* ---------- 风险与规则 ---------- */
.risk-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.risk-card{border-radius:var(--radius-lg);padding:32px;min-width:0}
.risk-card.dark{background:linear-gradient(155deg,#0d1a2e,#183459);color:#fff;box-shadow:var(--shadow)}
.risk-card.dark h2{color:#fff;font-size:21px}
.risk-card.dark p.intro{margin-top:12px;font-size:14.6px;color:rgba(220,232,255,.82)}
.risk-list{margin-top:22px;display:grid;gap:16px}
.risk-list li{display:flex;gap:12px;font-size:14.6px;line-height:1.7;color:rgba(226,236,255,.92)}
.risk-list .mark{flex:0 0 22px;width:22px;height:22px;border-radius:7px;background:rgba(255,120,90,.22);color:#ffb3a1;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:3px}
.rule-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.rule-card h2{font-size:21px}
.rule-card p.intro{margin-top:12px;font-size:14.6px;color:var(--muted)}
.rule-list{margin-top:20px;display:grid;gap:0}
.rule-list li{display:flex;align-items:flex-start;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.6px;color:var(--ink-2)}
.rule-list li:last-child{border-bottom:0}
.rule-list .idx{flex:0 0 24px;width:24px;height:24px;border-radius:8px;background:#eef4ff;color:var(--brand);font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px}

/* ---------- 方案对照 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.plan-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;min-width:0;transition:transform .22s,box-shadow .22s,border-color .22s}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcff}
.plan-card.featured{border-color:#b9cdff;box-shadow:0 16px 40px rgba(43,92,230,.16)}
.plan-flag{position:absolute;top:-13px;left:26px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:99px;letter-spacing:.04em}
.plan-card h3{font-size:19px;margin-bottom:6px}
.plan-sub{font-size:13.4px;color:var(--muted)}
.plan-list{margin-top:18px;display:grid;gap:11px}
.plan-list li{position:relative;padding-left:18px;font-size:14.3px;color:var(--ink-2)}
.plan-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:#9db8ff}
.plan-foot{margin-top:auto;padding-top:20px;font-size:12.8px;color:var(--muted)}
.plan-note{margin-top:22px;font-size:13px;color:var(--muted);text-align:center}

/* ---------- 常见问题 ---------- */
.faq-list{display:grid;gap:14px;max-width:940px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:#cfdcff;box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-size:16px;font-weight:600;color:var(--ink);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--brand);transition:transform .2s}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--ink-2);line-height:1.85}

/* ---------- 资讯 ---------- */
.news-layout{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
.news-list{display:grid;gap:14px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s,transform .2s}
.news-card:hover{border-color:#cfdcff;box-shadow:var(--shadow);transform:translateY(-2px)}
.news-link{display:block;padding:22px 24px}
.news-title{font-size:16.5px;color:var(--ink);line-height:1.55}
.news-link:hover .news-title{color:var(--brand)}
.news-summary{margin-top:8px;font-size:14.2px;color:var(--muted)}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}
.chip{font-size:12px;padding:3px 10px;border-radius:99px;background:#eef4ff;color:var(--brand);font-weight:600}
.news-meta time{font-size:12.6px;color:#94a2b8}
.news-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.news-side h3{font-size:16.5px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.side-item{display:block;padding:14px 0;border-bottom:1px dashed var(--line);transition:color .2s}
.side-item:last-child{border-bottom:0}
.side-item:hover{color:var(--brand)}
.side-title{font-size:14.4px;line-height:1.6;color:var(--ink-2)}
.side-item:hover .side-title{color:var(--brand)}
.side-meta{margin-top:5px;font-size:12.4px;color:#94a2b8}
.empty-tip{padding:26px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted);font-size:14.4px}

/* ---------- 入门三步 ---------- */
.begin-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.begin-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);min-width:0;position:relative;transition:transform .22s,box-shadow .22s}
.begin-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.begin-num{font-size:34px;font-weight:800;color:#e4ecff;line-height:1;margin-bottom:12px}
.begin-card h3{font-size:16.5px;margin-bottom:8px}
.begin-card p{font-size:14.4px;color:var(--muted)}

/* ---------- 分类入口 ---------- */
.cat-entry{display:flex;align-items:center;justify-content:space-between;gap:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow);flex-wrap:wrap}
.cat-entry h2{font-size:20px}
.cat-entry p{margin-top:10px;font-size:14.6px;color:var(--muted);max-width:640px}
.cat-entry .btn{flex-shrink:0}

/* ---------- 收口 CTA ---------- */
.final-cta{background:linear-gradient(150deg,#0b1524,#16305a 62%,#1d4176);color:#fff;padding:66px 0;text-align:center}
.final-cta h2{font-size:clamp(22px,2.6vw,30px);color:#fff}
.final-cta p{margin:16px auto 0;max-width:720px;font-size:15.2px;color:rgba(222,233,255,.86)}
.final-cta .btn{margin-top:28px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0a1220;color:#a9b7cc;padding:58px 0 26px;font-size:14.2px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:16px;display:block;line-height:1.4}
.footer-brand small{font-size:11.6px;color:#7f8ea6;display:block}
.footer-about{line-height:1.85;color:#93a3ba;font-size:13.8px}
.footer-col h3{color:#fff;font-size:14.6px;margin-bottom:14px;letter-spacing:.04em}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#9dadc4;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-risk{margin-top:34px;padding:16px 20px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);font-size:13px;color:#93a3ba;line-height:1.8}
.friend-links{margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.friend-title{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.04em}
.friend-list{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center}
.friend-list a{color:#9dadc4;font-size:13.4px;transition:color .2s}
.friend-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.copyright{margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);color:#7d8ca3;font-size:13px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .download-inner{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .demo-wrap{grid-template-columns:1fr;gap:30px}
  .news-layout{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .begin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-toggle{display:flex}
  .nav-main{display:none;flex:1 0 100%;flex-direction:column;align-items:stretch;gap:6px;margin:0 0 14px;padding-top:8px;border-top:1px solid var(--line)}
  .nav-main.is-open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px}
  .nav-item > a{display:block;padding:11px 12px}
  .mega-panel{position:static;width:100%;opacity:1;visibility:visible;transform:none;box-shadow:none;border-radius:12px;margin-top:6px;grid-template-columns:1fr;padding:16px}
  .nav-actions{margin:6px 0 0}
  .nav-cta{width:100%}
  .hero-quals ul{grid-template-columns:1fr}
  .risk-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .cat-entry{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{padding:46px 0 62px}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:1fr}
  .begin-grid{grid-template-columns:1fr}
  .download-actions{grid-template-columns:1fr}
  .download-inner{padding:24px}
  .apply-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .window-body{padding:18px}
}
@media (max-width:520px){
  body{font-size:15.4px}
  .section{padding:46px 0}
  .container.site-container{padding-left:16px;padding-right:16px}
  .hero-copy h1{font-size:23px}
  .hero-actions .btn{width:100%}
  .news-link{padding:18px}
  .risk-card{padding:24px}
  .cat-entry{padding:24px}
}

/* roulang page: article */
:root{
  --brand:#2b5ce6;
  --brand-2:#4a7bff;
  --brand-deep:#17379c;
  --accent:#10a37f;
  --ink:#111f33;
  --ink-2:#31435c;
  --muted:#6c7c93;
  --line:#e2e8f2;
  --bg:#f5f7fc;
  --surface:#ffffff;
  --dark:#0c1626;
  --dark-2:#132239;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-lg:0 24px 60px rgba(12,22,38,.14);
  --shadow:0 10px 28px rgba(12,22,38,.08);
  --shadow-sm:0 2px 8px rgba(12,22,38,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.4}
p{margin:0 0 1em}
.container.site-container{max-width:1220px;margin-left:auto;margin-right:auto;padding-left:22px;padding-right:22px}
/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(12,22,38,.05)}
.nav-bar{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--brand),#6f9bff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:19px;box-shadow:0 6px 16px rgba(43,92,230,.28)}
.brand-text strong{display:block;font-size:16.5px;line-height:1.3;letter-spacing:.02em}
.brand-text small{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.06em;line-height:1.5}
.nav-toggle{display:none;width:42px;height:38px;margin-left:auto;border:1px solid var(--line);border-radius:10px;background:#f7f9ff;padding:9px 10px;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-2);transition:background .2s}
.nav-toggle:hover span{background:var(--brand)}
.nav-main{display:flex;align-items:center;gap:10px;margin-left:auto;flex:1 1 auto;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}
.nav-item{position:relative}
.nav-item > a{display:inline-block;padding:9px 14px;border-radius:9px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s}
.nav-item > a:hover{background:#eef3ff;color:var(--brand)}
.nav-item.is-active > a{color:var(--brand);background:#eaf0ff;font-weight:600}
.mega-panel{position:absolute;top:calc(100% + 10px);left:0;width:min(680px,86vw);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s ease,transform .22s ease,visibility .22s;z-index:120}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;letter-spacing:.12em;color:var(--muted);font-weight:700;margin-bottom:10px;text-transform:uppercase}
.mega-col a{display:block;padding:8px 10px;border-radius:8px;font-size:14.5px;color:var(--ink-2);transition:background .2s,color .2s}
.mega-col a:hover{background:#f1f5ff;color:var(--brand)}
.mega-note{grid-column:1 / -1;background:#f6f9ff;border:1px dashed #cfdcff;border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--ink-2);margin:0}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;line-height:1.5;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;cursor:pointer;text-decoration:none}
.btn-primary-c{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(43,92,230,.28)}
.btn-primary-c:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(43,92,230,.34)}
.btn-primary-c:active{transform:translateY(0);box-shadow:0 6px 16px rgba(43,92,230,.3)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px)}
.btn-outline-c{background:#fff;color:var(--brand);border-color:#cbd9ff}
.btn-outline-c:hover{background:#f1f5ff;border-color:var(--brand);transform:translateY(-2px)}
.btn-block{width:100%}
.nav-cta{padding:10px 18px;font-size:14.5px}
.btn:focus-visible,.nav-item > a:focus-visible,.footer-col a:focus-visible,.friend-list a:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}
/* ---------- 文章头部 ---------- */
.article-hero{background:linear-gradient(180deg,#eef3ff 0%,#f5f7fc 100%);border-bottom:1px solid var(--line);padding:36px 0 42px}
.crumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--muted);transition:color .2s}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:#bcc9de}
.crumb-cur{color:var(--ink-2)}
.article-hero h1{font-size:clamp(23px,2.7vw,33px);line-height:1.45;max-width:900px;color:var(--ink)}
.article-summary{margin-top:15px;max-width:820px;color:var(--muted);font-size:15.5px;line-height:1.9}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.meta-chip{display:inline-flex;align-items:center;padding:5px 13px;border-radius:99px;background:#e6eeff;color:var(--brand-deep);font-weight:600;font-size:13px}
.meta-text{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}
/* ---------- 正文布局 ---------- */
.article-main{padding:44px 0 76px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:start}
.article-shell{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 38px 40px;box-shadow:var(--shadow-sm);min-width:0}
.article-body{max-width:720px;font-size:16.5px;line-height:1.95;color:var(--ink-2);overflow-wrap:break-word}
.article-body h2{font-size:clamp(20px,2vw,24px);color:var(--ink);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand);line-height:1.5}
.article-body h3{font-size:17.5px;color:var(--ink);margin:26px 0 10px}
.article-body h4{font-size:16px;color:var(--ink);margin:20px 0 8px}
.article-body p{margin:0 0 16px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:23px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-deep)}
.article-body strong{color:var(--ink)}
.article-body blockquote{margin:20px 0;padding:14px 18px;background:#f4f7ff;border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:18px 0;max-width:100%;height:auto}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:#f4f7ff;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:26px 0}
.article-empty{padding:20px 0 6px}
.article-empty h2{font-size:21px;margin-bottom:12px;color:var(--ink)}
.article-empty p{color:var(--muted);margin-bottom:20px}
.article-note{margin-top:34px;border:1px solid #ffd9d9;background:#fff6f6;border-radius:var(--radius);padding:18px 20px;font-size:14.5px;color:#8a3a3a;line-height:1.85}
.article-note strong{color:#a12a2a}
/* ---------- 侧栏 ---------- */
.article-aside{display:grid;gap:20px;min-width:0}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);min-width:0}
.side-card h2,.side-card h3{font-size:16px;color:var(--ink);margin-bottom:6px}
.side-sub{font-size:13px;color:var(--muted);margin-bottom:14px}
.side-list{display:grid;gap:11px;margin:0;padding:0;list-style:none}
.side-list li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);line-height:1.75}
.side-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--brand-2)}
.side-dl{display:grid;gap:10px;margin-top:6px}
.side-dl .btn{justify-content:flex-start;padding:11px 16px;font-size:14px}
.side-risk{background:#0f1f36;border-color:#1d3352;color:#c3d3ea}
.side-risk h2{color:#fff}
.side-risk p{font-size:13.5px;line-height:1.85;color:#a9bcd8;margin:0}
/* ---------- 条款速览 ---------- */
.terms{padding:0 0 6px;margin-top:44px}
.terms-head{max-width:760px;margin-bottom:22px}
.terms-head h2{font-size:clamp(20px,2.1vw,24px);color:var(--ink)}
.terms-head p{margin-top:10px;color:var(--muted);font-size:15px}
.terms-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.term-card{background:#f8faff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;min-width:0;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.term-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cbd9ff}
.term-card h3{font-size:15.5px;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:9px}
.term-card h3 span{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:8px;background:#e6eeff;color:var(--brand-deep);font-size:12.5px;font-weight:700}
.term-card p{font-size:14.5px;color:var(--ink-2);line-height:1.85;margin:0}
/* ---------- 下载区 ---------- */
.download-band{margin-top:44px;background:linear-gradient(135deg,#0f2340 0%,#17379c 100%);border-radius:var(--radius-lg);padding:34px 36px;color:#fff;box-shadow:var(--shadow)}
.download-band h2{font-size:clamp(20px,2.2vw,25px);color:#fff}
.download-band > p{margin-top:10px;color:rgba(219,231,255,.85);font-size:14.8px;max-width:740px}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}
.dl-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:18px;min-width:0;transition:background .2s ease,transform .2s ease}
.dl-card:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.dl-card h3{font-size:15.5px;color:#fff;margin-bottom:6px}
.dl-card p{font-size:13.5px;color:rgba(214,228,255,.8);line-height:1.75;margin:0 0 14px}
.dl-card .btn{width:100%;padding:10px 14px;font-size:14px;background:#fff;color:var(--brand-deep);border-color:#fff;font-weight:700}
.dl-card .btn:hover{background:#eef3ff;color:var(--brand-deep);transform:translateY(-1px)}
/* ---------- 动态与收口 ---------- */
.channel-block{margin-top:44px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 30px;box-shadow:var(--shadow-sm)}
.channel-block h2{font-size:20px;color:var(--ink)}
.channel-block > p{margin-top:10px;color:var(--muted);font-size:15px}
.channel-foot{margin-top:16px}
.cta-band{margin-top:44px;background:linear-gradient(135deg,#eaf1ff 0%,#f7faff 100%);border:1px solid #d4e0ff;border-radius:var(--radius-lg);padding:32px 34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.cta-band h2{font-size:clamp(19px,2vw,23px);color:var(--ink);max-width:640px}
.cta-band p{margin-top:9px;color:var(--ink-2);font-size:14.8px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#c9d6ea;padding:62px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand strong{display:block;color:#fff;font-size:16.5px;line-height:1.35}
.footer-brand small{display:block;font-size:11.5px;color:#8ea4c4;letter-spacing:.05em}
.footer-about{font-size:13.8px;color:#9db0cc;line-height:1.9;margin:0}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{margin:0;padding:0;list-style:none}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:14px;color:#a7bad6;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-risk{margin-top:36px;padding:16px 18px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:rgba(255,255,255,.04);font-size:13px;color:#9db0cc;line-height:1.9}
.friend-links{margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.friend-title{font-size:14px;color:#fff;margin-bottom:12px}
.friend-list{display:flex;flex-wrap:wrap;gap:10px 20px}
.friend-list a{font-size:13.5px;color:#9db0cc;transition:color .2s}
.friend-list a:hover{color:#fff}
.copyright{margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#8195b2}
/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px}
  .article-aside{grid-template-columns:repeat(2,minmax(0,1fr))}
  .side-risk{grid-column:1 / -1}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .nav-main{display:none;width:100%;flex-direction:column;align-items:stretch;margin-left:0;padding:12px 0 18px;border-top:1px solid var(--line);justify-content:flex-start}
  .nav-main.is-open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-item > a{display:block;padding:11px 12px}
  .mega-panel{position:static;opacity:1;visibility:visible;transform:none;width:100%;box-shadow:none;border-radius:12px;margin:6px 0 10px;padding:16px;grid-template-columns:1fr;gap:12px}
  .nav-actions{margin-left:0;margin-top:10px;width:100%}
  .nav-cta{width:100%}
}
@media (max-width:768px){
  .article-hero{padding:26px 0 32px}
  .article-main{padding:30px 0 56px}
  .article-shell{padding:24px 20px 30px;border-radius:16px}
  .article-body{font-size:16px}
  .article-note{margin-top:26px}
  .terms-grid{grid-template-columns:minmax(0,1fr)}
  .download-band{padding:26px 20px;margin-top:34px}
  .download-grid{grid-template-columns:minmax(0,1fr);gap:12px}
  .channel-block,.cta-band{padding:22px 20px;margin-top:32px}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .side-risk{grid-column:auto}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .copyright{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .container.site-container{padding-left:16px;padding-right:16px}
  .brand-text strong{font-size:15px}
  .article-hero h1{font-size:21px}
  .article-summary{font-size:14.6px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .article-body table{display:block;overflow-x:auto}
}

/* roulang page: category1 */
:root{
  --brand:#2b5ce6;
  --brand-2:#4a7bff;
  --brand-deep:#17379c;
  --accent:#10a37f;
  --ink:#111f33;
  --ink-2:#31435c;
  --muted:#6c7c93;
  --line:#e2e8f2;
  --bg:#f5f7fc;
  --surface:#ffffff;
  --dark:#0c1626;
  --dark-2:#132239;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-lg:0 24px 60px rgba(12,22,38,.14);
  --shadow:0 10px 28px rgba(12,22,38,.08);
  --shadow-sm:0 2px 8px rgba(12,22,38,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.42;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
img{max-width:100%;height:auto;display:block}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid rgba(43,92,230,.45);outline-offset:2px;border-radius:6px}
.container.site-container{width:100%;max-width:1220px;margin:0 auto;padding-left:22px;padding-right:22px}
.section{padding:74px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.4vw,30px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.4px;line-height:1.95}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.8px;font-weight:600;letter-spacing:.1em;color:var(--brand);margin-bottom:12px}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(12,22,38,.05)}
.nav-bar{display:flex;align-items:center;gap:22px;min-height:74px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--brand),#6f9bff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:19px;box-shadow:0 6px 16px rgba(43,92,230,.28)}
.brand-text strong{display:block;font-size:16.5px;line-height:1.3;letter-spacing:.02em}
.brand-text small{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.06em;line-height:1.5}
.nav-toggle{display:none;width:42px;height:38px;margin-left:auto;border:1px solid var(--line);border-radius:10px;background:#f7f9ff;padding:9px 10px;flex-direction:column;justify-content:space-between}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-2);transition:background .2s}
.nav-toggle:hover span{background:var(--brand)}
.nav-main{display:flex;align-items:center;gap:10px;margin-left:auto;flex:1 1 auto;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-item > a{display:inline-block;padding:9px 14px;border-radius:9px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s}
.nav-item > a:hover{background:#eef3ff;color:var(--brand)}
.nav-item.is-active > a{color:var(--brand);background:#eaf0ff;font-weight:600}
.mega-panel{position:absolute;top:calc(100% + 10px);left:0;width:min(680px,86vw);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s ease,transform .22s ease,visibility .22s;z-index:120}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;letter-spacing:.12em;color:var(--muted);font-weight:700;margin-bottom:10px}
.mega-col a{display:block;padding:8px 10px;border-radius:8px;font-size:14.5px;color:var(--ink-2);transition:background .2s,color .2s}
.mega-col a:hover{background:#f1f5ff;color:var(--brand)}
.mega-note{grid-column:1 / -1;background:#f6f9ff;border:1px dashed #cfdcff;border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--ink-2);line-height:1.85}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;line-height:1.5;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;cursor:pointer}
.btn-primary-c{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(43,92,230,.28)}
.btn-primary-c:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(43,92,230,.34)}
.btn-primary-c:active{transform:translateY(0);box-shadow:0 6px 16px rgba(43,92,230,.3)}
.btn-outline-c{background:#fff;color:var(--brand);border-color:#cbd9ff}
.btn-outline-c:hover{background:#f1f5ff;border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px)}
.nav-cta{padding:10px 18px;font-size:14.5px}

/* ---------- 分类首屏 ---------- */
.cat-hero{position:relative;padding:54px 0 68px;background:linear-gradient(158deg,#0b1524 0%,#122647 55%,#1a3b6d 100%);color:#fff;overflow:hidden}
.cat-hero::after{content:"";position:absolute;right:-130px;top:-150px;width:470px;height:470px;border-radius:50%;background:radial-gradient(circle,rgba(74,123,255,.35),transparent 68%);pointer-events:none}
.cat-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:start;position:relative;z-index:2}
.cat-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(196,213,240,.85);margin-bottom:16px}
.cat-crumb span{color:rgba(196,213,240,.5)}
.cat-hero h1{font-size:clamp(26px,3.2vw,38px);line-height:1.42;color:#fff;letter-spacing:.01em}
.cat-lead{margin-top:16px;color:rgba(226,236,255,.86);font-size:15.8px;line-height:1.98}
.cat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cat-tags li{padding:7px 14px;border-radius:99px;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);font-size:13px;color:#e8efff}
.cat-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.rule-panel{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:26px 24px;color:var(--ink)}
.rule-panel h2{font-size:17.5px}
.panel-sub{font-size:13px;color:var(--muted);margin-top:6px;margin-bottom:14px}
.rule-row{display:flex;gap:14px;padding:13px 0;border-top:1px solid var(--line);min-width:0}
.rule-row:first-of-type{border-top:none;padding-top:2px}
.rule-key{flex:0 0 88px;font-size:13.6px;font-weight:700;color:var(--brand-deep)}
.rule-val{flex:1 1 auto;min-width:0;font-size:13.8px;color:var(--ink-2);line-height:1.85}

/* ---------- 规则要点 ---------- */
.rule-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.rule-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rule-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d9ff}
.rule-card .card-no{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;background:#eaf0ff;color:var(--brand-deep);font-size:14px;font-weight:700;margin-bottom:14px}
.rule-card h3{font-size:16.4px;margin-bottom:10px}
.rule-card p{font-size:14.2px;color:var(--muted);line-height:1.92}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;min-width:0;transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease}
.scene-card:hover{border-color:#c9d9ff;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.scene-card h3{font-size:16.5px;margin-bottom:10px}
.scene-card p{font-size:14.3px;color:var(--muted);line-height:1.92}
.scene-tag{display:inline-block;font-size:12.4px;font-weight:600;color:var(--accent);background:#e8f8f2;border-radius:99px;padding:4px 12px;margin-bottom:12px}

/* ---------- 流程 ---------- */
.flow-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.flow-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;min-width:0;transition:border-color .2s ease,box-shadow .2s ease}
.flow-item:hover{border-color:#c9d9ff;box-shadow:var(--shadow-sm)}
.flow-num{width:32px;height:32px;border-radius:10px;background:#eaf0ff;color:var(--brand-deep);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.flow-item h3{font-size:15.4px;margin-bottom:8px}
.flow-item p{font-size:13.8px;color:var(--muted);line-height:1.9}

/* ---------- 条款说明 ---------- */
.clause-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px;align-items:start}
.clause-intro h2{font-size:clamp(21px,2.2vw,28px);line-height:1.5}
.clause-intro p{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.98}
.clause-points{margin-top:20px;display:grid;gap:10px}
.clause-points li{position:relative;padding-left:20px;font-size:14.3px;color:var(--ink-2);line-height:1.85}
.clause-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--brand-2)}
.clause-list{display:grid;gap:16px}
.clause-item{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--radius-sm);padding:18px 20px;min-width:0;transition:box-shadow .2s ease}
.clause-item:hover{box-shadow:var(--shadow-sm)}
.clause-item h3{font-size:15.8px;margin-bottom:8px}
.clause-item p{font-size:14.2px;color:var(--muted);line-height:1.92}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item[open]{border-color:#c9d9ff;box-shadow:var(--shadow-sm)}
.faq-item summary{font-size:15.8px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand);flex-shrink:0}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin-top:12px;font-size:14.3px;color:var(--muted);line-height:1.96}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;min-width:0;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d9ff}
.news-card h3{font-size:15.6px;line-height:1.62}
.news-card h3 a{display:block}
.news-card p{font-size:13.8px;color:var(--muted);line-height:1.9}
.news-meta{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:12.6px;color:#8695ab;margin-top:auto;padding-top:6px}
.news-empty{font-size:14.2px;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:22px}

/* ---------- 下载 ---------- */
.download-sec{background:linear-gradient(150deg,#0d1a2c 0%,#14294a 60%,#1a3b6d 100%);color:#fff;padding:64px 0}
.download-panel{display:grid;grid-template-columns:1.12fr .88fr;gap:40px;align-items:center}
.download-copy h2{color:#fff;font-size:clamp(21px,2.3vw,28px)}
.download-copy p{margin-top:14px;font-size:15.2px;color:rgba(219,231,250,.85);line-height:1.95}
.dl-note{margin-top:18px;font-size:13.2px;color:rgba(190,208,240,.9);border-left:3px solid rgba(255,255,255,.3);padding-left:14px;line-height:1.85}
.dl-btns{display:grid;gap:12px}
.dl-btn{display:flex;align-items:center;justify-content:space-between;gap:14px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);border-radius:12px;padding:14px 18px;color:#fff;font-size:15px;font-weight:600;transition:background .2s ease,transform .2s ease,border-color .2s ease}
.dl-btn:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.45);color:#fff;transform:translateY(-2px)}
.dl-btn small{font-size:12.4px;font-weight:400;color:rgba(199,216,244,.9);white-space:nowrap}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:var(--radius-lg);padding:38px 42px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;box-shadow:var(--shadow)}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px);line-height:1.5;max-width:640px}
.cta-band p{margin-top:10px;font-size:14.6px;color:rgba(238,244,255,.9);max-width:660px;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-outline-c{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55)}
.cta-actions .btn-outline-c:hover{background:rgba(255,255,255,.26);color:#fff;border-color:#fff}
.btn-light-c{background:#fff;color:var(--brand-deep);box-shadow:0 10px 24px rgba(9,24,56,.22)}
.btn-light-c:hover{background:#f2f6ff;color:var(--brand-deep);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#c7d3e6;padding:60px 0 34px}
.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{display:block;font-size:16px;color:#fff;line-height:1.35}
.footer-brand small{display:block;font-size:11.5px;color:#8ea2c0;letter-spacing:.06em}
.footer-about{font-size:14px;color:#93a6c2;line-height:1.92;max-width:35em}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-col ul li{margin-bottom:9px}
.footer-col a{font-size:14px;color:#9fb2cd}
.footer-col a:hover{color:#fff}
.footer-risk{margin-top:38px;padding:18px 20px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);font-size:13.5px;line-height:1.95;color:#9fb2cd}
.friend-links{margin-top:30px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.friend-title{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.friend-list{display:flex;flex-wrap:wrap;gap:10px 18px}
.friend-list a{font-size:13.5px;color:#9fb2cd}
.friend-list a:hover{color:#fff}
.copyright{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7f92af}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .nav-main{display:none;width:100%;flex-direction:column;align-items:stretch;gap:12px;margin-left:0;padding:16px 0 8px;border-top:1px solid var(--line);justify-content:flex-start}
  .nav-main.is-open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px}
  .nav-item > a{padding:12px;font-size:15px}
  .mega-panel{position:static;opacity:1;visibility:visible;transform:none;width:100%;box-shadow:none;border:1px dashed var(--line);padding:14px;margin-top:6px;grid-template-columns:1fr}
  .nav-actions{margin-left:0}
  .nav-cta{width:100%}
  .cat-hero-grid{grid-template-columns:1fr;gap:30px}
  .rule-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .clause-wrap{grid-template-columns:1fr;gap:26px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .download-panel{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .section{padding:54px 0}
  .cat-hero{padding:40px 0 52px}
  .rule-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .scene-grid{grid-template-columns:1fr}
  .flow-list{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 24px}
  .download-sec{padding:50px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:520px){
  .container.site-container{padding-left:16px;padding-right:16px}
  .rule-grid{grid-template-columns:1fr}
  .rule-row{flex-direction:column;gap:4px}
  .rule-key{flex:none}
  .cat-actions .btn,.cta-actions .btn{width:100%}
  .dl-btn{flex-direction:column;align-items:flex-start;gap:4px}
  .dl-btn small{white-space:normal}
  .brand-text strong{font-size:15.5px}
  .brand-text small{font-size:11px}
  .copyright{flex-direction:column;gap:8px}
}