/* roulang page: index */
:root{
  --brand-600:#1657C4;
  --brand-700:#0E3D8F;
  --brand-800:#0A2E6D;
  --brand-50:#E8F0FE;
  --brand-100:#D3E1FA;
  --accent-500:#0FA98E;
  --accent-50:#E4F7F2;
  --amber-500:#F5A524;
  --amber-50:#FEF3E0;
  --amber-ink:#8A5A00;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --ink:#16202E;
  --ink-2:#5A6B7F;
  --ink-3:#8A97A8;
  --line:#E3E8EF;
  --danger:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
  --shadow-2:0 2px 4px rgba(16,32,64,.06),0 16px 36px rgba(16,32,64,.10);
  --section-y:72px;
  --bs-primary:#1657C4;
  --bs-body-color:#16202E;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Inter,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700);text-decoration:underline}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.1em}
button{font-family:inherit}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
section{scroll-margin-top:132px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  padding:10px 20px;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  cursor:pointer;text-align:center;
}
.btn:hover{text-decoration:none}
.btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.btn-brand{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,87,196,.22)}
.btn-outline-brand{background:#fff;color:var(--brand-600);border-color:var(--brand-100)}
.btn-outline-brand:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-600);transform:translateY(-1px)}
.btn-inverse{background:#fff;color:var(--brand-700);border-color:#fff}
.btn-inverse:hover{background:#F1F5FD;color:var(--brand-800);transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.14)}
.btn-lg{padding:13px 26px;font-size:16px}
.btn-sm{padding:7px 14px;font-size:14px}
.btn-block{width:100%}

/* ---------- 双层导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;box-shadow:0 1px 0 var(--line)}
.nav-top-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand:hover{text-decoration:none;color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.6px;flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:9px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-input);
  height:40px;padding:0 13px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(22,87,196,.10)}
.nav-search i{color:var(--ink-3);font-size:14px}
.nav-search input{flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);min-width:0}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.link-login{font-size:15px;font-weight:500;color:var(--ink-2);padding:8px 10px;border-radius:8px}
.link-login:hover{color:var(--brand-600);background:var(--brand-50);text-decoration:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;align-items:center;justify-content:center;cursor:pointer;
  margin-left:auto;transition:.2s ease;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 24px 20px}
.nav-drawer.is-open{display:block}
.nav-drawer .nav-search{max-width:none;margin-bottom:12px}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{padding:11px 4px;font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.drawer-links a:last-child{border-bottom:0}
.drawer-links a:hover{color:var(--brand-600);text-decoration:none}
.nav-tabs-bar{border-top:1px solid var(--line);background:#fff}
.nav-tabs-inner{display:flex;align-items:stretch;gap:4px;height:52px;overflow-x:auto;scrollbar-width:none}
.nav-tabs-inner::-webkit-scrollbar{display:none}
.tab{
  position:relative;flex:0 0 auto;display:inline-flex;align-items:center;
  padding:0 15px;font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:color .2s ease;
}
.tab::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;
  background:transparent;border-radius:2px 2px 0 0;transition:background-color .2s ease;
}
.tab:hover{color:var(--brand-600);text-decoration:none}
.tab.active{color:var(--brand-600);font-weight:600}
.tab.active::after{background:var(--brand-600)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;padding:60px 0 68px;
  background:linear-gradient(180deg,#F1F5FC 0%,#F6F8FB 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,87,196,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(22,87,196,.045) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-eyebrow i{color:var(--accent-500);font-size:11px}
.hero h1{
  font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.4px;
  color:var(--ink);
}
.hero-sub{font-size:17px;color:var(--ink-2);margin-top:16px;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-wrap:wrap;gap:10px 26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink-2)}
.hero-points i{color:var(--accent-500);font-size:13px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid rgba(0,0,0,.04);box-shadow:var(--shadow-1);
}
.media-badge{
  position:absolute;right:16px;bottom:16px;background:rgba(255,255,255,.92);
  border:1px solid var(--line);border-radius:12px;padding:10px 14px;
  box-shadow:var(--shadow-1);backdrop-filter:blur(6px);
}
.media-badge strong{display:block;font-size:18px;font-weight:700;color:var(--brand-700);line-height:1.3;font-variant-numeric:tabular-nums}
.media-badge span{font-size:12.5px;color:var(--ink-2)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.3px}
.section-head p{color:var(--ink-2);margin-top:12px;font-size:15.5px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border-radius:999px;padding:5px 13px;margin-bottom:14px;
}

/* ---------- 数据条 ---------- */
.metrics-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease;
}
.metric:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.metric-num{
  font-size:30px;font-weight:700;color:var(--brand-700);line-height:1.2;
  font-variant-numeric:tabular-nums;font-family:Inter,"SF Mono",ui-monospace,system-ui,sans-serif;
}
.metric-label{font-size:14px;color:var(--ink-2);margin-top:8px}

/* ---------- 权益对比 ---------- */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
table.compare-table{width:100%;border-collapse:collapse;font-size:15px}
table.compare-table thead th{
  background:var(--brand-700);color:#fff;font-weight:600;font-size:15px;
  padding:16px 18px;text-align:center;white-space:nowrap;
}
table.compare-table thead th:first-child{text-align:left;width:34%}
table.compare-table thead th .th-sub{display:block;font-size:12.5px;font-weight:400;color:rgba(255,255,255,.72);margin-top:2px}
table.compare-table tbody td{
  padding:15px 18px;border-top:1px solid var(--line);text-align:center;color:var(--ink);vertical-align:middle;
}
table.compare-table tbody tr:nth-child(even) td{background:#FAFBFD}
table.compare-table tbody td:first-child{
  text-align:left;font-weight:500;background:#F1F6FE;color:var(--ink);
  border-right:1px solid var(--line);
}
table.compare-table tbody tr:nth-child(even) td:first-child{background:#EDF3FD}
.mark{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500}
.mark .ico{flex:0 0 auto}
.mark-yes{color:var(--accent-500)}
.mark-no{color:#9AA7B6}
.compare-cards{display:none}

/* ---------- 等级亮点 ---------- */
.level-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;align-items:stretch}
.level-card{
  position:relative;display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;
  box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.level-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDDF7}
.level-card.featured{border:1.5px solid var(--brand-600)}
.level-card.featured::before{
  content:"推荐";position:absolute;top:-11px;right:18px;background:var(--amber-500);
  color:#3A2A00;font-size:12px;font-weight:700;padding:3px 11px;border-radius:999px;
}
.badge-level{
  display:inline-flex;align-items:center;gap:6px;background:var(--amber-50);color:var(--amber-ink);
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;width:max-content;
}
.badge-level i{font-size:11px}
.level-name{font-size:20px;font-weight:600;margin-top:14px;line-height:1.45}
.level-desc{font-size:14px;color:var(--ink-2);margin-top:8px;min-height:44px}
.level-list{list-style:none;padding:0;margin:16px 0 22px;display:flex;flex-direction:column;gap:9px}
.level-list li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-2);line-height:1.55}
.level-list i{color:var(--accent-500);font-size:12px;margin-top:5px}
.level-card .btn{margin-top:auto}

/* ---------- 专属内容 ---------- */
.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.content-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.content-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDDF7}
.content-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDF1F7}
.content-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;border:1px solid rgba(0,0,0,.04)}
.content-locked .content-thumb img{filter:grayscale(1);opacity:.9}
.content-locked .content-thumb::after{content:"";position:absolute;inset:0;background:rgba(22,32,46,.44)}
.lock-mark{
  position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:24px;
}
.content-body{display:flex;flex-direction:column;padding:20px 22px 22px;flex:1}
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:4px 11px;border-radius:999px;width:max-content;
}
.pill-brand{background:var(--brand-50);color:var(--brand-700)}
.pill-accent{background:var(--accent-50);color:#0A7C68}
.pill-amber{background:var(--amber-50);color:var(--amber-ink)}
.content-title{font-size:17px;font-weight:600;line-height:1.5;margin-top:12px}
.content-title a{color:var(--ink)}
.content-title a:hover{color:var(--brand-600);text-decoration:none}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.content-summary{font-size:14px;color:var(--ink-2);margin-top:10px}
.content-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.content-meta time{font-size:13px;color:var(--ink-3)}
.content-meta .go{font-size:13.5px;font-weight:600;color:var(--brand-600)}
.content-meta .go:hover{text-decoration:none;color:var(--brand-700)}
.content-meta .locked-tip{font-size:13.5px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDDF7}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.post-meta time{font-size:13px;color:var(--ink-3);white-space:nowrap}
.post-title{font-size:17px;font-weight:600;line-height:1.5}
.post-title a{color:var(--ink)}
.post-title a:hover{color:var(--brand-600);text-decoration:none}
.post-summary{font-size:14px;color:var(--ink-2);margin-top:10px}
.post-link{margin-top:auto;padding-top:16px;font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.post-link:hover{text-decoration:none}
.post-link i{font-size:11px;transition:transform .2s ease}
.post-link:hover i{transform:translateX(3px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--ink-3)}
.empty-state p{color:var(--ink-2);font-size:15px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-accordion .accordion-item{
  border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0;
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  background:transparent;box-shadow:none;padding:20px 44px 20px 4px;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  border-radius:0;position:relative;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-600)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-600);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  position:absolute;right:8px;width:16px;height:16px;background-size:16px;
  transition:transform .2s ease;filter:none;opacity:.6;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(180deg);opacity:1}
.faq-accordion .accordion-body{
  padding:0 44px 22px 4px;font-size:15px;color:var(--ink-2);line-height:1.75;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-600);border-radius:18px;padding:48px 52px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:#fff}
.cta-band p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.86);max-width:620px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta-band .text-link{color:rgba(255,255,255,.9);font-size:14px;text-decoration:underline;text-underline-offset:3px}
.cta-band .text-link:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:var(--section-y);padding:56px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px}
.footer-brand .brand-text{font-size:17px}
.footer-desc{font-size:14px;color:var(--ink-2);line-height:1.75}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--ink)}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand-600);text-decoration:none}
.footer-contact{font-size:14px;color:var(--ink-2);line-height:1.9}
.footer-contact .row-line{display:flex;gap:8px}
.footer-contact .row-line span:first-child{color:var(--ink-3);flex:0 0 auto}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:var(--ink-3)}
.footer-bottom .legal{font-size:12.5px;color:#A3AEBD}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-600);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .2s ease;
  box-shadow:0 10px 24px rgba(22,87,196,.28);z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-700)}
.to-top:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .hero-grid{gap:44px}
}
@media (max-width:1199.98px){
  :root{--section-y:64px}
  .metrics-grid{gap:20px}
  .level-grid{gap:20px}
  .content-grid,.post-grid{gap:20px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  :root{--section-y:56px}
  .nav-search,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .nav-top-inner{height:64px}
  .hero{padding:44px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .hero-sub{max-width:none}
  .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .level-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .content-grid,.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:40px}
  .cta-actions{flex-direction:row;align-items:center;flex-wrap:wrap}
}
@media (max-width:767.98px){
  :root{--section-y:44px}
  .container{padding-left:18px;padding-right:18px}
  .compare-wrap{display:none}
  .compare-cards{display:grid;grid-template-columns:1fr;gap:18px}
  .compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
  .compare-card h3{font-size:18px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .compare-card .cc-list{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-direction:column;gap:11px}
  .compare-card .cc-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14.5px;color:var(--ink-2);padding-bottom:11px;border-bottom:1px dashed var(--line)}
  .compare-card .cc-list li:last-child{border-bottom:0;padding-bottom:0}
  .hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-cta .btn{flex:1 1 auto}
  .section-head{margin-bottom:26px}
  .level-grid,.content-grid,.post-grid{grid-template-columns:1fr}
  .level-desc{min-height:0}
  .cta-band{padding:32px 24px;border-radius:14px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:18px;width:42px;height:42px}
}
@media (max-width:575.98px){
  .metrics-grid{grid-template-columns:1fr;gap:14px}
  .metric{padding:20px}
  .media-badge{right:12px;bottom:12px;padding:8px 12px}
  .media-badge strong{font-size:16px}
  .hero-points{flex-direction:column;gap:10px}
  .nav-tabs-inner{height:48px}
  .tab{padding:0 12px;font-size:14px}
  .tab::after{left:12px;right:12px}
  .brand-text{font-size:17px}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px}
}

/* roulang page: article */
:root{
  --brand-500:#1657C4;
  --brand-600:#1249A8;
  --brand-700:#0E3D8F;
  --brand-100:#E8F0FE;
  --accent-500:#0FA98E;
  --accent-100:#E4F6F2;
  --gold-500:#F5A524;
  --gold-100:#FEF3E0;
  --ink-900:#16202E;
  --ink-600:#5A6B7F;
  --ink-400:#8B99A8;
  --bg-body:#F6F8FB;
  --bg-card:#FFFFFF;
  --line-200:#E3E8EF;
  --danger-500:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-static:0 1px 2px rgba(16,32,64,.04), 0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 2px 4px rgba(16,32,64,.06), 0 16px 36px rgba(16,32,64,.10);
  --space-section:72px;
  --bs-primary:#1657C4;
  --bs-body-color:#16202E;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Inter,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.7;
  color:var(--ink-900);
  background:var(--bg-body);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Buttons ---------- */
.btn-brand,.btn-ghost,.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:12px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:0 6px 16px rgba(22,87,196,.20);}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-outline-brand{background:#fff;color:var(--brand-500);border-color:#C7D7F3;}
.btn-outline-brand:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-500);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:transparent;}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);}
.btn-gold{background:var(--gold-500);color:#3A2606;border:1px solid var(--gold-500);}
.btn-gold:hover{background:#E3961A;color:#3A2606;transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line-200);box-shadow:0 1px 2px rgba(16,32,64,.03);}
.header-top{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-name{font-size:19px;font-weight:700;color:var(--ink-900);white-space:nowrap;}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-400);letter-spacing:1px;line-height:1.2;}
.search-box{flex:1;max-width:420px;position:relative;}
.search-box input{
  width:100%;height:42px;padding:0 16px 0 42px;border-radius:var(--radius-btn);
  border:1px solid var(--line-200);background:#F9FBFE;color:var(--ink-900);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box input::placeholder{color:var(--ink-400);}
.search-box input:focus{outline:none;background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(22,87,196,.14);}
.search-box i{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--radius-btn);border:1px solid var(--line-200);background:#fff;color:var(--ink-900);}
.nav-tabs-bar{background:#fff;border-top:1px solid var(--line-200);}
.nav-tabs-inner{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none;}
.nav-tabs-inner::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--ink-600);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.tab:hover{background:var(--brand-100);color:var(--brand-700);}
.tab.active{background:var(--brand-500);color:#fff;}
.tab.active:hover{background:var(--brand-700);color:#fff;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line-200);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--ink-600);}
.crumb a{color:var(--ink-600);}
.crumb a:hover{color:var(--brand-500);text-decoration:underline;}
.crumb .sep{color:#C3CCD8;}
.crumb .now{color:var(--ink-900);font-weight:500;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Layout ---------- */
.article-main{padding:36px 0 var(--space-section);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
.article-shell{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);box-shadow:var(--shadow-static);padding:36px 40px 40px;}
.article-head{border-bottom:1px solid var(--line-200);padding-bottom:24px;margin-bottom:28px;}
.kicker{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-600);
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--radius-pill);
}
.article-head h1{font-size:clamp(28px,4vw,42px);line-height:1.25;margin:16px 0 18px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--ink-600);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CCD8;}
.meta-row i{color:var(--brand-500);margin-right:5px;}
.meta-row time{font-variant-numeric:tabular-nums;}
.meta-chip{background:#F1F5FA;border:1px solid var(--line-200);border-radius:var(--radius-pill);padding:4px 11px;color:var(--ink-600);}

/* ---------- Article body ---------- */
.article-body{font-size:17px;line-height:1.85;color:var(--ink-900);}
.article-body>*+*{margin-top:1.2em;}
.article-body p{margin:0;}
.article-body h2{
  font-size:clamp(22px,2.6vw,26px);line-height:1.35;position:relative;
  padding-left:16px;margin:32px 0 16px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand-500);}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;margin:28px 0 12px;color:var(--brand-700);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body a{color:var(--brand-500);text-decoration:underline;}
.article-body a:hover{color:var(--brand-700);}
.article-body ul,.article-body ol{padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;}
.article-body li::marker{color:var(--brand-500);}
.article-body blockquote{
  background:var(--brand-100);border-left:4px solid var(--brand-500);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;padding:16px 20px;color:var(--ink-600);font-size:16px;
}
.article-body blockquote p{margin:0;}
.article-body img{border-radius:var(--radius-card);margin:24px auto;border:1px solid rgba(0,0,0,.04);}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;white-space:nowrap;}
.article-body th,.article-body td{border:1px solid var(--line-200);padding:11px 14px;text-align:left;}
.article-body th{background:#F1F5FA;color:var(--ink-900);font-weight:600;}
.article-body tr:nth-child(even) td{background:#FAFCFE;}
.article-body hr{border:0;border-top:1px solid var(--line-200);}
.article-body code{background:#F1F5FA;border-radius:6px;padding:2px 6px;font-size:15px;}
.empty-state{text-align:center;padding:64px 20px;}
.empty-state .ico{
  width:64px;height:64px;border-radius:50%;background:var(--brand-100);color:var(--brand-500);
  display:grid;place-items:center;margin:0 auto 18px;font-size:24px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-600);font-size:15px;margin-bottom:22px;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--brand-500);border-radius:var(--radius-card);padding:34px 36px;color:#fff;display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;margin-top:32px;}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.cta-actions .btn-inverse{background:#fff;color:var(--brand-700);border:1px solid #fff;padding:12px 22px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;transition:transform .2s ease,background-color .2s ease;}
.cta-actions .btn-inverse:hover{background:#EAF1FE;transform:translateY(-2px);}
.cta-actions .link-light{color:#fff;font-size:14px;text-decoration:underline;text-underline-offset:4px;}
.cta-actions .link-light:hover{color:#fff;opacity:.85;}

/* ---------- Related ---------- */
.related{margin-top:48px;}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;}
.section-title h2{font-size:clamp(20px,2.4vw,24px);}
.section-title span{font-size:13px;color:var(--ink-600);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-static);display:flex;gap:14px;align-items:flex-start;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CBD9F0;}
.related-card .thumb{width:64px;height:64px;flex:0 0 64px;border-radius:10px;overflow:hidden;border:1px solid rgba(0,0,0,.04);}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;}
.related-card h3{font-size:15px;line-height:1.5;font-weight:600;margin-bottom:6px;}
.related-card h3 a{color:var(--ink-900);}
.related-card h3 a:hover{color:var(--brand-500);}
.related-card p{font-size:13px;color:var(--ink-600);line-height:1.6;}
.related-card .tag{display:inline-block;margin-top:8px;font-size:12px;color:var(--accent-500);background:var(--accent-100);border-radius:var(--radius-pill);padding:3px 10px;}

/* ---------- Back bar ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line-200);}
.back-bar .hint{font-size:14px;color:var(--ink-600);}

/* ---------- Side rail ---------- */
.side-rail{display:none;}
.rail-card{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);box-shadow:var(--shadow-static);padding:20px;}
.rail-card h3{font-size:15px;margin-bottom:14px;}
.rail-card li+li{margin-top:10px;}
.rail-card li a{font-size:14px;color:var(--ink-600);display:block;padding:8px 10px;border-radius:8px;border-left:2px solid transparent;}
.rail-card li a:hover{background:var(--brand-100);color:var(--brand-700);border-left-color:var(--brand-500);}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line-200);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:13px;border-radius:10px;}
.footer-brand .brand-text{font-size:17px;font-weight:700;color:var(--ink-900);}
.footer-desc{font-size:13.5px;color:var(--ink-600);line-height:1.75;max-width:340px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul li+li{margin-top:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-600);}
.footer-col ul a:hover{color:var(--brand-500);text-decoration:underline;}
.footer-contact .row-line{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--ink-600);padding:9px 0;border-bottom:1px dashed var(--line-200);}
.footer-contact .row-line span:last-child{color:var(--ink-900);font-weight:500;text-align:right;}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:40px;padding-top:20px;border-top:1px solid var(--line-200);}
.footer-bottom p{font-size:13px;color:var(--ink-400);}
.footer-bottom .legal{color:#9AA7B4;}

/* ---------- Back to top ---------- */
#toTop{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-500);color:#fff;border:0;display:none;place-items:center;
  box-shadow:0 10px 24px rgba(22,87,196,.28);z-index:70;cursor:pointer;transition:background-color .2s ease,transform .2s ease;
}
#toTop:hover{background:var(--brand-700);transform:translateY(-2px);}
#toTop.show{display:grid;}

/* ---------- Responsive ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start;}
  .side-rail{display:block;position:sticky;top:140px;}
}
@media (max-width:1199px){
  .side-rail{display:none;}
}
@media (max-width:991px){
  .header-top{height:64px;gap:14px;}
  .search-box{display:none;}
  .nav-toggle{display:inline-grid;place-items:center;}
  .header-actions .btn-login{display:none;}
  .brand-sub{display:none;}
  .nav-tabs-bar{border-top:1px solid var(--line-200);}
  .nav-tabs-inner{height:48px;padding-right:8px;}
  .article-shell{padding:26px 22px 30px;}
  :root{--space-section:56px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .cta-band{padding:26px 22px;}
  .article-body{font-size:16.5px;}
  :root{--space-section:40px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .related-card .thumb{width:56px;height:56px;flex-basis:56px;}
  .header-actions{gap:8px;}
  .header-actions .btn-brand{padding:10px 14px;font-size:14px;}
  .crumb .now{max-width:180px;}
}

/* roulang page: category1 */
:root{
  --brand-500:#1657C4;
  --brand-600:#1249A8;
  --brand-700:#0E3D8F;
  --brand-50:#E8F0FE;
  --accent-500:#0FA98E;
  --accent-50:#E6F7F3;
  --warn-500:#F5A524;
  --warn-50:#FEF4E3;
  --danger-500:#C0392B;
  --ink-900:#16202E;
  --ink-600:#5A6B7F;
  --ink-400:#8896A8;
  --bg-page:#F6F8FB;
  --bg-card:#FFFFFF;
  --line-200:#E3E8EF;
  --line-100:#EEF2F7;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
  --shadow-2:0 2px 4px rgba(16,32,64,.06),0 16px 36px rgba(16,32,64,.10);
  --head-h:117px;
  --bs-primary:#1657C4;
  --bs-primary-rgb:22,87,196;
  --bs-body-color:#16202E;
  --bs-border-radius:14px;
  --bs-border-color:#E3E8EF;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --bs-link-color:#1657C4;
  --bs-link-hover-color:#0E3D8F;
}
@media (max-width:991px){:root{--head-h:105px;}}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink-900);
  background:var(--bg-page);
  padding-top:var(--head-h);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink-900);letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,42px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (max-width:991px){.container{padding-left:18px;padding-right:18px;}}

/* ---------- Bootstrap 组件外观重塑 ---------- */
.btn{border-radius:var(--radius-btn);font-weight:600;transition:all .2s ease;padding:10px 20px;}
.btn-primary{
  --bs-btn-bg:#1657C4;--bs-btn-border-color:#1657C4;
  --bs-btn-hover-bg:#1249A8;--bs-btn-hover-border-color:#1249A8;
  --bs-btn-active-bg:#0E3D8F;--bs-btn-active-border-color:#0E3D8F;
  --bs-btn-disabled-bg:#9FB6DE;--bs-btn-disabled-border-color:#9FB6DE;
}
.card{--bs-card-border-radius:var(--radius-card);--bs-card-border-color:var(--line-200);--bs-card-bg:#fff;--bs-card-inner-border-radius:var(--radius-card);}
.nav{--bs-nav-link-color:#5A6B7F;--bs-nav-link-hover-color:#0E3D8F;}
.badge{--bs-badge-border-radius:999px;--bs-badge-font-weight:600;}
.table{--bs-table-border-color:var(--line-200);--bs-table-color:var(--ink-900);}
.form-control{border-radius:var(--radius-btn);border-color:var(--line-200);padding:10px 14px;}
.form-control:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(22,87,196,.12);}

/* ---------- 双层导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line-200);}
.topbar{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.site-header .brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-500);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink-900);white-space:nowrap;}
.search-box{flex:1;max-width:380px;display:flex;align-items:center;gap:10px;background:#F3F6FB;border:1px solid var(--line-200);border-radius:var(--radius-btn);padding:0 14px;height:42px;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;}
.search-box:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(22,87,196,.12);}
.search-box svg{color:var(--ink-400);flex:none;}
.search-box input{flex:1;border:0;background:transparent;font-size:14.5px;color:var(--ink-900);outline:none;height:100%;}
.search-box input::placeholder{color:var(--ink-400);}
.topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.link-login{font-size:15px;font-weight:600;color:var(--ink-600);padding:8px 6px;}
.link-login:hover{color:var(--brand-600);text-decoration:none;}
.btn-cta{display:inline-flex;align-items:center;background:var(--brand-500);color:#fff;font-size:15px;font-weight:600;padding:10px 20px;border-radius:var(--radius-btn);border:1px solid var(--brand-500);transition:all .2s ease;white-space:nowrap;}
.btn-cta:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line-200);background:#fff;border-radius:var(--radius-btn);align-items:center;justify-content:center;color:var(--ink-600);}
.menu-btn:hover{border-color:var(--brand-500);color:var(--brand-600);}
.nav-tabs-bar{background:#fff;border-top:1px solid var(--line-100);}
.nav-tabs-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none;}
.nav-tabs-inner::-webkit-scrollbar{display:none;}
.tab{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;font-size:15px;color:var(--ink-600);white-space:nowrap;transition:all .2s ease;}
.tab:hover{color:var(--brand-600);background:var(--brand-50);text-decoration:none;}
.tab.active{background:var(--brand-50);color:var(--brand-600);font-weight:600;box-shadow:inset 0 -2px 0 var(--brand-500);}
@media (max-width:991px){
  .topbar{height:60px;gap:14px;flex-wrap:wrap;}
  .search-box{display:none;}
  .site-header.search-open .search-box{display:flex;max-width:none;flex:1 0 100%;order:5;margin-bottom:10px;}
  .menu-btn{display:inline-flex;}
  .nav-tabs-inner{height:48px;-webkit-mask-image:linear-gradient(90deg,#000 0,#000 93%,transparent 100%);mask-image:linear-gradient(90deg,#000 0,#000 93%,transparent 100%);}
}
@media (max-width:575px){
  .brand-name{font-size:16.5px;}
  .btn-cta{padding:9px 14px;font-size:14px;}
  .link-login{display:none;}
}

/* ---------- 页头横幅 ---------- */
.page-hero{
  position:relative;
  padding:52px 0 56px;
  background:#EFF4FC url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--line-200);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 52%,rgba(232,240,254,.74) 100%);
}
.hero-inner{position:relative;z-index:1;}
.breadcrumb-bar{margin-bottom:18px;}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-600);list-style:none;margin:0;padding:0;}
.breadcrumb-bar li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb-bar li+li::before{content:"/";color:var(--ink-400);}
.breadcrumb-bar a{color:var(--ink-600);}
.breadcrumb-bar a:hover{color:var(--brand-600);}
.breadcrumb-bar [aria-current="page"]{color:var(--ink-900);font-weight:600;}
.hero-tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:600;margin-bottom:16px;}
.hero-lead{max-width:760px;margin-top:18px;font-size:17px;color:var(--ink-600);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand-500);color:#fff;font-size:15.5px;font-weight:600;padding:13px 26px;border-radius:var(--radius-btn);border:1px solid var(--brand-500);transition:all .2s ease;}
.btn-main:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-line{display:inline-flex;align-items:center;justify-content:center;background:#fff;color:var(--brand-600);font-size:15.5px;font-weight:600;padding:13px 26px;border-radius:var(--radius-btn);border:1px solid #C8D6EC;transition:all .2s ease;}
.btn-line:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-700);text-decoration:none;transform:translateY(-2px);}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-facts li{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line-200);border-radius:999px;padding:7px 16px;font-size:13.5px;color:var(--ink-600);box-shadow:var(--shadow-1);}
.hero-facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:none;}
@media (max-width:768px){
  .page-hero{padding:34px 0 38px;}
  .hero-lead{font-size:15.5px;margin-top:14px;}
  .hero-actions{margin-top:22px;}
  .btn-main,.btn-line{padding:12px 20px;font-size:15px;width:100%;}
  .hero-actions{flex-direction:column;}
}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--brand-600);background:var(--brand-50);border-radius:999px;padding:5px 14px;margin-bottom:14px;}
.section-sub{margin-top:14px;color:var(--ink-600);font-size:16px;}
@media (max-width:991px){.section{padding:56px 0;}.section-tight{padding:40px 0;}.section-head{margin-bottom:28px;}}
@media (max-width:768px){.section{padding:40px 0;}.section-tight{padding:32px 0;}.section-sub{font-size:15px;}}

/* ---------- 卡片栅格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:991px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media (max-width:575px){.grid-3{grid-template-columns:1fr;gap:16px;}}
.info-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--line-200);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D3DDEE;}
.card-media{position:relative;aspect-ratio:16/9;background:var(--brand-50);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid rgba(0,0,0,.04);}
.media-pill{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--brand-600);font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;box-shadow:0 1px 2px rgba(16,32,64,.08);}
.card-body{padding:20px 22px 10px;flex:1 1 auto;}
.card-body h3{margin-bottom:10px;}
.card-body p{color:var(--ink-600);font-size:15px;line-height:1.68;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 22px 20px;border-top:1px solid var(--line-100);margin-top:14px;font-size:13.5px;color:var(--ink-400);}
.link-more{font-weight:600;font-size:14px;color:var(--brand-500);white-space:nowrap;}
.link-more:hover{color:var(--brand-700);text-decoration:underline;}

/* ---------- 横向要点条 ---------- */
.key-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);padding:8px;box-shadow:var(--shadow-1);}
.key-item{display:flex;gap:14px;padding:20px 18px;border-radius:10px;transition:background .2s ease;}
.key-item:hover{background:var(--brand-50);}
.key-item + .key-item{border-left:1px solid var(--line-100);}
.key-icon{flex:none;width:38px;height:38px;border-radius:10px;background:var(--accent-50);color:var(--accent-500);display:inline-flex;align-items:center;justify-content:center;}
.key-item h3{font-size:16px;margin-bottom:6px;}
.key-item p{font-size:14px;color:var(--ink-600);line-height:1.6;}
@media (max-width:991px){
  .key-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .key-item + .key-item{border-left:0;}
  .key-item:nth-child(2n){border-left:1px solid var(--line-100);}
}
@media (max-width:575px){
  .key-strip{grid-template-columns:1fr;padding:6px;}
  .key-item:nth-child(2n){border-left:0;}
  .key-item{border-top:1px solid var(--line-100);}
  .key-item:first-child{border-top:0;}
}

/* ---------- 非等分图文 ---------- */
.split-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line-200);background:#fff;}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.split-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(0,0,0,.04);border-radius:var(--radius-card);pointer-events:none;}
.split-body h2{margin-bottom:16px;}
.split-body p{color:var(--ink-600);font-size:16px;}
.split-body p + p{margin-top:14px;}
.check-list{margin:22px 0 26px;display:grid;gap:12px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:var(--ink-900);}
.check-list li svg{flex:none;margin-top:4px;color:var(--accent-500);}
@media (max-width:991px){
  .split-grid{grid-template-columns:1fr;gap:26px;}
  .split-media img{aspect-ratio:16/10;}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-accordion{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);padding:6px 24px;box-shadow:var(--shadow-1);}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line-200);background:transparent;}
.faq-accordion .accordion-item:last-child{border-bottom:0;}
.faq-accordion .accordion-button{background:transparent;box-shadow:none;font-size:17px;font-weight:600;color:var(--ink-900);padding:20px 34px 20px 0;line-height:1.5;}
.faq-accordion .accordion-button:hover{color:var(--brand-600);}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-600);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button::after{
  width:16px;height:16px;background-size:16px;margin-left:auto;position:absolute;right:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235A6B7F'%3E%3Cpath d='M8 11.6 2.4 6l1.1-1.1L8 9.4l4.5-4.5L13.6 6z'/%3E%3C/svg%3E");
  transition:transform .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231657C4'%3E%3Cpath d='M8 11.6 2.4 6l1.1-1.1L8 9.4l4.5-4.5L13.6 6z'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-body{padding:0 34px 22px 0;font-size:15px;color:var(--ink-600);line-height:1.75;}
@media (max-width:575px){
  .faq-accordion{padding:4px 16px;}
  .faq-accordion .accordion-button{font-size:16px;padding:16px 30px 16px 0;}
  .faq-accordion .accordion-body{padding:0 20px 18px 0;font-size:14.5px;}
}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--brand-500);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);}
.cta-band p{color:rgba(255,255,255,.86);margin-top:10px;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.btn-invert{display:inline-flex;align-items:center;background:#fff;color:var(--brand-600);font-weight:600;font-size:15.5px;padding:13px 28px;border-radius:var(--radius-btn);border:1px solid #fff;transition:all .2s ease;}
.btn-invert:hover{background:var(--warn-50);border-color:var(--warn-500);color:var(--brand-700);text-decoration:none;transform:translateY(-2px);}
.cta-link{color:#fff;font-weight:600;font-size:15px;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px;}
.cta-link:hover{color:#fff;text-decoration:none;border-bottom-color:#fff;}
@media (max-width:768px){
  .cta-band{padding:40px 0;}
  .cta-actions{width:100%;}
  .btn-invert{width:100%;justify-content:center;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#F1F4F9;border-top:1px solid var(--line-200);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.site-footer .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-500);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;}
.site-footer .brand-text{font-size:17px;font-weight:700;color:var(--ink-900);}
.footer-desc{font-size:14px;color:var(--ink-600);line-height:1.75;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-600);}
.footer-col ul a:hover{color:var(--brand-600);text-decoration:underline;}
.footer-contact{display:grid;gap:12px;}
.footer-contact .row-line{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--ink-600);border-bottom:1px dashed var(--line-200);padding-bottom:10px;}
.footer-contact .row-line span:last-child{color:var(--ink-900);font-weight:500;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line-200);margin-top:40px;padding-top:20px;}
.footer-bottom p{font-size:13.5px;color:var(--ink-400);}
.footer-bottom .legal{color:var(--ink-400);}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}}
@media (max-width:575px){
  .site-footer{padding:40px 0 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;background:var(--brand-500);color:#fff;border:0;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s ease;z-index:1040;}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);}
@media (max-width:575px){.to-top{right:16px;bottom:18px;width:42px;height:42px;}}

/* roulang page: category2 */
:root{
    --brand-500:#1657C4;
    --brand-700:#0E3D8F;
    --brand-50:#E8F0FE;
    --accent-mint:#0FA98E;
    --accent-amber:#F5A524;
    --bg-base:#F6F8FB;
    --surface:#FFFFFF;
    --ink-900:#16202E;
    --ink-500:#5A6B7F;
    --line-200:#E3E8EF;
    --danger-600:#C0392B;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(16,32,64,.04), 0 8px 24px rgba(16,32,64,.06);
    --shadow-2:0 2px 4px rgba(16,32,64,.06), 0 16px 36px rgba(16,32,64,.10);
    --container-max:1200px;
    --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",sans-serif;

    --bs-primary:#1657C4;
    --bs-body-color:#16202E;
    --bs-body-bg:#F6F8FB;
    --bs-border-radius:14px;
    --bs-border-color:#E3E8EF;
    --bs-link-color:#1657C4;
    --bs-link-hover-color:#0E3D8F;
    --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
    --bs-body-font-family:var(--font-cn);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.7;
    color:var(--ink-900);
    background:var(--bg-base);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:1px solid rgba(0,0,0,.04);}
  a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
  a:hover{color:var(--brand-700);text-decoration:underline;}
  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--brand-500);
    outline-offset:2px;
    border-radius:6px;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  button{font-family:inherit;}

  .container{
    width:100%;
    max-width:var(--container-max);
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }

  /* ============ 按钮系统 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-size:15px;
    font-weight:600;
    line-height:1.2;
    padding:12px 22px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    cursor:pointer;
    transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
    text-decoration:none;
  }
  .btn:hover{text-decoration:none;transform:translateY(-2px);}
  .btn-brand{background:var(--brand-500);color:#fff;}
  .btn-brand:hover{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
  .btn-brand:active{transform:translateY(0);}
  .btn-ghost{background:#fff;color:var(--brand-700);border-color:#C9D8F4;}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-500);}
  .btn-inverse{background:#fff;color:var(--brand-700);}
  .btn-inverse:hover{background:#EAF1FF;color:var(--brand-700);}
  .btn-text{background:transparent;color:var(--ink-900);padding:10px 12px;}
  .btn-text:hover{background:var(--brand-50);color:var(--brand-700);}
  .btn-sm{padding:9px 16px;font-size:14px;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:1030;
    background:#fff;
    border-bottom:1px solid var(--line-200);
  }
  .nav-top-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:68px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
  .brand:hover{text-decoration:none;}
  .brand-mark{
    width:38px;height:38px;
    border-radius:11px;
    background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
    color:#fff;
    font-size:13px;
    font-weight:700;
    letter-spacing:.6px;
    display:flex;align-items:center;justify-content:center;
  }
  .brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.2px;}
  .nav-search{
    flex:1 1 auto;
    max-width:380px;
    display:flex;
    align-items:center;
    background:#F4F6FA;
    border:1px solid var(--line-200);
    border-radius:var(--radius-btn);
    padding:0 6px 0 12px;
    transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .nav-search:focus-within{
    background:#fff;
    border-color:var(--brand-500);
    box-shadow:0 0 0 3px rgba(22,87,196,.12);
  }
  .nav-search input{
    flex:1 1 auto;
    border:0;
    background:transparent;
    padding:10px 8px 10px 0;
    font-size:14px;
    color:var(--ink-900);
    outline:none;
  }
  .nav-search input::placeholder{color:#94A3B5;}
  .search-btn{
    border:0;background:transparent;color:var(--brand-500);
    display:flex;align-items:center;padding:6px;cursor:pointer;border-radius:8px;
  }
  .search-btn:hover{background:var(--brand-50);}
  .nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0;}
  .nav-toggle{
    display:none;
    margin-left:auto;
    border:1px solid var(--line-200);
    background:#fff;
    border-radius:10px;
    padding:8px 10px;
    color:var(--ink-900);
    cursor:pointer;
  }
  .nav-mobile{display:none;padding:0 0 16px;}
  .nav-mobile.open{display:block;}
  .nav-mobile .nav-search{max-width:100%;margin-bottom:12px;}
  .nav-mobile-actions{display:flex;gap:10px;}
  .nav-mobile-actions .btn{flex:1;}

  .nav-tabs-bar{background:#fff;border-top:1px solid var(--line-200);}
  .nav-tabs-inner{
    display:flex;
    align-items:center;
    gap:6px;
    height:52px;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-tabs-inner::-webkit-scrollbar{display:none;}
  .tab{
    display:inline-flex;
    align-items:center;
    white-space:nowrap;
    padding:8px 15px;
    border-radius:var(--radius-pill);
    font-size:14.5px;
    font-weight:500;
    color:var(--ink-500);
    transition:background-color .2s ease,color .2s ease;
  }
  .tab:hover{background:var(--brand-50);color:var(--brand-700);text-decoration:none;}
  .tab.active{background:var(--brand-500);color:#fff;font-weight:600;}
  .tab.active:hover{background:var(--brand-700);color:#fff;}

  /* ============ 通用板块 ============ */
  .section{padding:72px 0;}
  .section-alt{background:#fff;}
  .section-head{max-width:760px;margin-bottom:36px;}
  .section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;}
  .section-head p{margin-top:14px;color:var(--ink-500);font-size:16px;}
  .eyebrow{
    display:inline-block;
    font-size:13px;
    font-weight:600;
    letter-spacing:.6px;
    color:var(--brand-700);
    background:var(--brand-50);
    border-radius:var(--radius-pill);
    padding:5px 12px;
    margin-bottom:14px;
  }

  .pill{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12.5px;font-weight:600;
    padding:4px 11px;border-radius:var(--radius-pill);
    white-space:nowrap;
  }
  .pill-brand{background:var(--brand-50);color:var(--brand-700);}
  .pill-mint{background:#E2F6F1;color:#0A7A66;}
  .pill-amber{background:#FEF2DA;color:#9A6206;}
  .pill-lock{background:#FBEAE8;color:var(--danger-600);}

  /* ============ 页头 ============ */
  .page-hero{
    background-color:#EDF3FD;
    background-image:linear-gradient(180deg,rgba(232,240,254,.95),rgba(246,248,251,.99)),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line-200);
    padding:40px 0 64px;
  }
  .breadcrumb-nav{
    display:flex;align-items:center;flex-wrap:wrap;gap:8px;
    font-size:13.5px;color:var(--ink-500);margin-bottom:26px;
  }
  .breadcrumb-nav a{color:var(--ink-500);}
  .breadcrumb-nav a:hover{color:var(--brand-700);}
  .breadcrumb-nav .sep{color:#B3BECC;}
  .breadcrumb-nav .current{color:var(--ink-900);font-weight:600;}

  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
  .hero-copy h1{
    font-size:clamp(28px,4vw,42px);
    line-height:1.25;
    font-weight:700;
    margin:16px 0 18px;
  }
  .hero-copy .lead{font-size:17px;line-height:1.8;color:var(--ink-500);max-width:56ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-figure{position:relative;}
  .hero-figure img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
  }
  .hero-float{
    position:absolute;right:16px;bottom:-18px;
    background:rgba(255,255,255,.94);
    border:1px solid var(--line-200);
    border-radius:12px;
    box-shadow:var(--shadow-1);
    padding:12px 16px;
    display:flex;gap:18px;
  }
  .hero-float .fv{font-size:19px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;}
  .hero-float .fk{font-size:12.5px;color:var(--ink-500);}

  /* ============ 档位速览 ============ */
  .tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .tier-card{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line-200);
    border-radius:var(--radius-card);
    padding:26px 24px 24px;
    box-shadow:var(--shadow-1);
    display:flex;flex-direction:column;
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .tier-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFDCF3;}
  .tier-card.recommended{border-color:var(--brand-500);box-shadow:0 0 0 1px var(--brand-500),var(--shadow-1);}
  .tier-flag{
    position:absolute;top:-12px;left:24px;
    background:var(--accent-amber);
    color:#3D2A02;
    font-size:12px;font-weight:700;
    padding:4px 12px;border-radius:var(--radius-pill);
  }
  .tier-name{font-size:18px;font-weight:700;margin-bottom:6px;}
  .tier-market{font-size:13.5px;color:var(--ink-500);margin-bottom:16px;}
  .tier-price{display:flex;align-items:baseline;gap:6px;margin-bottom:18px;}
  .tier-price .num{font-size:32px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1;}
  .tier-price .unit{font-size:13.5px;color:var(--ink-500);}
  .tier-list{display:flex;flex-direction:column;gap:10px;margin-bottom:24px;}
  .tier-list li{display:flex;gap:9px;font-size:14.5px;color:var(--ink-500);line-height:1.6;}
  .tier-list svg{flex-shrink:0;margin-top:4px;color:var(--accent-mint);}
  .tier-card .btn{margin-top:auto;width:100%;}

  /* ============ 条件对照 ============ */
  .compare-layout{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
  .compare-aside figcaption{
    padding:14px 4px 0;
    font-size:13.5px;color:var(--ink-500);line-height:1.7;
  }
  .compare-aside img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
  }
  .aside-note{
    margin-top:22px;
    background:#fff;
    border:1px solid var(--line-200);
    border-left:4px solid var(--brand-500);
    border-radius:12px;
    padding:18px 20px;
    box-shadow:var(--shadow-1);
  }
  .aside-note h3{font-size:16px;margin-bottom:8px;}
  .aside-note p{font-size:14px;color:var(--ink-500);line-height:1.75;}

  .compare-list{
    background:#fff;
    border:1px solid var(--line-200);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-1);
  }
  .compare-row{
    display:grid;
    grid-template-columns:1fr 1.15fr;
    border-bottom:1px solid var(--line-200);
  }
  .compare-row:last-child{border-bottom:0;}
  .compare-cond{
    padding:20px 22px;
    background:#FAFBFD;
    font-size:15px;
    font-weight:600;
    color:var(--ink-900);
    display:flex;align-items:center;
  }
  .compare-result{
    padding:20px 22px;
    display:flex;flex-direction:column;gap:8px;
  }
  .compare-result .verdict{font-size:15px;font-weight:600;color:var(--brand-700);}
  .compare-result p{font-size:14px;color:var(--ink-500);line-height:1.7;}

  /* ============ 权益矩阵 ============ */
  .table-scroll{width:100%;overflow-x:auto;border-radius:var(--radius-card);}
  .matrix{
    width:100%;
    min-width:640px;
    border-collapse:separate;
    border-spacing:0;
    background:#fff;
    border:1px solid var(--line-200);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-1);
  }
  .matrix thead th{
    background:var(--brand-700);
    color:#fff;
    font-size:15px;
    font-weight:600;
    text-align:left;
    padding:16px 20px;
    white-space:nowrap;
  }
  .matrix tbody td{
    padding:15px 20px;
    font-size:15px;
    border-top:1px solid var(--line-200);
    vertical-align:middle;
    color:var(--ink-900);
  }
  .matrix tbody tr:nth-child(even) td{background:#FAFBFD;}
  .matrix td.row-head{background:var(--brand-50);font-weight:600;}
  .matrix tbody tr:nth-child(even) td.row-head{background:var(--brand-50);}
  .mark{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;}
  .mark-yes{color:#0A7A66;}
  .mark-no{color:#93A0B1;font-weight:500;}
  .mark svg{flex-shrink:0;}

  /* ============ 步骤流 ============ */
  .steps{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    counter-reset:step;
  }
  .step-card{
    position:relative;
    background:#fff;
    border:1px solid var(--line-200);
    border-radius:var(--radius-card);
    padding:28px 24px 24px;
    box-shadow:var(--shadow-1);
    transition:box-shadow .2s ease,transform .2s ease;
  }
  .step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
  .step-num{
    width:44px;height:44px;
    border-radius:12px;
    background:var(--brand-50);
    color:var(--brand-700);
    font-size:19px;
    font-weight:700;
    display:flex;align-items:center;justify-content:center;
    margin-bottom:18px;
    font-variant-numeric:tabular-nums;
  }
  .step-card h3{font-size:18px;margin-bottom:10px;}
  .step-card p{font-size:14.5px;color:var(--ink-500);line-height:1.75;}
  .step-tip{
    margin-top:16px;
    font-size:13px;
    color:var(--brand-700);
    background:var(--brand-50);
    border-radius:8px;
    padding:8px 12px;
    display:inline-block;
  }

  /* ============ FAQ ============ */
  .faq-wrap{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);padding:8px 24px;box-shadow:var(--shadow-1);}
  .accordion-item{border:0;border-bottom:1px solid var(--line-200);background:transparent;}
  .accordion-item:last-child{border-bottom:0;}
  .accordion-button{
    font-size:17px;
    font-weight:600;
    color:var(--ink-900);
    background:transparent;
    padding:20px 4px;
    box-shadow:none;
    border-radius:0 !important;
    transition:color .2s ease;
  }
  .accordion-button:not(.collapsed){color:var(--brand-500);background:transparent;box-shadow:none;}
  .accordion-button:hover{color:var(--brand-700);}
  .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--brand-500);outline-offset:-2px;}
  .accordion-button::after{transition:transform .2s ease;}
  .accordion-body{padding:0 4px 20px;font-size:15px;line-height:1.85;color:var(--ink-500);}

  /* ============ CTA ============ */
  .cta-band{
    background:var(--brand-500);
    border-radius:18px;
    padding:48px 44px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:36px;
    box-shadow:var(--shadow-1);
  }
  .cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
  .cta-band p{color:#D6E3FB;font-size:15.5px;margin-top:12px;max-width:60ch;}
  .cta-actions{display:flex;align-items:center;gap:18px;flex-shrink:0;flex-wrap:wrap;}
  .cta-link{color:#fff;font-size:14.5px;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
  .cta-link:hover{color:#EAF1FF;}

  /* ============ 页脚 ============ */
  .site-footer{
    background:#fff;
    border-top:1px solid var(--line-200);
    padding:56px 0 24px;
    margin-top:72px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:36px;
    padding-bottom:36px;
    border-bottom:1px solid var(--line-200);
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{width:34px;height:34px;border-radius:9px;font-size:12px;}
  .footer-brand .brand-text{font-size:17px;}
  .footer-desc{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:38ch;}
  .footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col ul a{font-size:14px;color:var(--ink-500);}
  .footer-col ul a:hover{color:var(--brand-700);}
  .footer-contact{display:flex;flex-direction:column;gap:10px;}
  .footer-contact .row-line{display:flex;justify-content:space-between;gap:14px;font-size:14px;color:var(--ink-500);}
  .footer-contact .row-line span:last-child{color:var(--ink-900);font-weight:500;text-align:right;}
  .footer-bottom{
    display:flex;justify-content:space-between;align-items:center;gap:16px;
    padding-top:22px;flex-wrap:wrap;
  }
  .footer-bottom p{font-size:13.5px;color:var(--ink-500);}
  .footer-bottom .legal{font-size:13px;color:#93A0B1;}

  /* ============ 返回顶部 ============ */
  #toTop{
    position:fixed;
    right:22px;
    bottom:26px;
    width:46px;height:46px;
    border-radius:50%;
    border:0;
    background:var(--brand-500);
    color:#fff;
    display:flex;align-items:center;justify-content:center;
    box-shadow:var(--shadow-1);
    cursor:pointer;
    opacity:0;
    visibility:hidden;
    transform:translateY(10px);
    transition:opacity .2s ease,transform .2s ease,background-color .2s ease,visibility .2s ease;
    z-index:1040;
  }
  #toTop.show{opacity:1;visibility:visible;transform:translateY(0);}
  #toTop:hover{background:var(--brand-700);}

  /* ============ 响应式 ============ */
  @media (max-width:1199px){
    .hero-grid{gap:36px;}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
    .footer-col:last-child{grid-column:1 / -1;}
    .footer-contact{max-width:520px;}
  }
  @media (max-width:991px){
    .container{padding-left:18px;padding-right:18px;}
    .section{padding:56px 0;}
    .nav-search{display:none;}
    .nav-actions{display:none;}
    .nav-toggle{display:inline-flex;align-items:center;gap:6px;}
    .hero-grid{grid-template-columns:1fr;}
    .hero-figure{order:-1;}
    .hero-float{position:static;margin-top:14px;box-shadow:none;border-style:dashed;}
    .page-hero{padding:28px 0 48px;}
    .compare-layout{grid-template-columns:1fr;gap:28px;}
    .tier-grid{grid-template-columns:1fr;gap:18px;}
    .steps{grid-template-columns:1fr;gap:18px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
    .cta-actions{width:100%;}
    .site-footer{margin-top:56px;padding-top:44px;}
  }
  @media (max-width:768px){
    .section{padding:40px 0;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
    .footer-col:last-child{grid-column:1 / -1;}
    .compare-row{grid-template-columns:1fr;}
    .compare-cond{border-bottom:1px solid var(--line-200);}
    .table-scroll{overflow:visible;}
    .matrix{min-width:0;border:0;box-shadow:none;background:transparent;}
    .matrix thead{display:none;}
    .matrix tbody tr{
      display:block;
      background:#fff;
      border:1px solid var(--line-200);
      border-radius:12px;
      padding:14px 16px;
      margin-bottom:14px;
      box-shadow:var(--shadow-1);
    }
    .matrix tbody td{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:14px;
      border-top:0;
      padding:8px 0;
      background:transparent !important;
      font-size:14.5px;
    }
    .matrix tbody td.row-head{
      display:block;
      font-size:16px;
      font-weight:700;
      padding:0 0 10px;
      margin-bottom:6px;
      border-bottom:1px solid var(--line-200);
      background:transparent !important;
    }
    .matrix tbody td[data-label]::before{
      content:attr(data-label);
      font-size:13px;
      color:var(--ink-500);
      font-weight:500;
      flex-shrink:0;
    }
    .faq-wrap{padding:4px 16px;}
  }
  @media (max-width:520px){
    .hero-copy h1{font-size:26px;}
    .hero-actions .btn{width:100%;}
    .cta-band{padding:28px 20px;border-radius:14px;}
    .cta-actions{flex-direction:column;align-items:stretch;gap:12px;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    #toTop{right:14px;bottom:16px;}
  }

/* roulang page: category3 */
:root{
  --brand-600:#1657C4;
  --brand-700:#0E3D8F;
  --brand-100:#E8F0FE;
  --accent-500:#0FA98E;
  --accent-100:#E4F6F2;
  --amber-500:#F5A524;
  --amber-100:#FEF3E2;
  --ink-900:#16202E;
  --ink-600:#5A6B7F;
  --line-200:#E3E8EF;
  --bg-body:#F6F8FB;
  --bg-card:#FFFFFF;
  --danger-600:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.04), 0 8px 24px rgba(16,32,64,.06);
  --shadow-lg:0 2px 4px rgba(16,32,64,.06), 0 16px 36px rgba(16,32,64,.10);
  --section-y:72px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;

  --bs-primary:#1657C4;
  --bs-primary-rgb:22,87,196;
  --bs-body-color:#16202E;
  --bs-body-bg:#F6F8FB;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  --bs-border-radius:10px;
  --bs-border-radius-lg:14px;
  --bs-border-color:#E3E8EF;
  --bs-link-color:#1657C4;
  --bs-link-hover-color:#0E3D8F;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-body);
  color:var(--ink-900);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;
  padding:10px 18px;border-radius:0 0 10px 0;z-index:2000;
}
.skip-link:focus{left:0;color:#fff;text-decoration:none;}

.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line-200);
  box-shadow:0 1px 2px rgba(16,32,64,.04);
}
.header-top-inner{
  display:flex;align-items:center;gap:20px;min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.3px;}
.header-search{
  flex:1 1 auto;max-width:420px;margin:0 auto;
  display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-btn);
  padding:6px 8px 6px 14px;transition:border-color .2s ease, box-shadow .2s ease;
}
.header-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,87,196,.12);}
.header-search i{color:var(--ink-600);font-size:14px;}
.header-search input{
  flex:1;border:0;outline:none;background:transparent;font-size:14px;color:var(--ink-900);
  min-width:0;
}
.header-search input::placeholder{color:#9AA8B8;}
.search-btn{
  border:0;background:var(--brand-600);color:#fff;font-size:13px;font-weight:600;
  padding:7px 16px;border-radius:8px;cursor:pointer;transition:background .2s ease;
}
.search-btn:hover{background:var(--brand-700);}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.link-login{font-size:14px;font-weight:500;color:var(--ink-600);}
.link-login:hover{color:var(--brand-600);text-decoration:none;}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand-600);color:#fff;border:1px solid var(--brand-600);
  font-size:14px;font-weight:600;padding:9px 20px;border-radius:var(--radius-btn);
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand-600);border:1px solid var(--line-200);
  font-size:14px;font-weight:600;padding:9px 20px;border-radius:var(--radius-btn);
  transition:border-color .2s ease, color .2s ease, transform .2s ease;
}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-700);text-decoration:none;transform:translateY(-1px);}
.btn-invert{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand-700);border:1px solid #fff;
  font-size:15px;font-weight:700;padding:12px 26px;border-radius:var(--radius-btn);
  transition:transform .2s ease, box-shadow .2s ease;
}
.btn-invert:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.18);color:var(--brand-700);text-decoration:none;}

.nav-tabs-bar{
  background:#fff;border-top:1px solid var(--line-200);
}
.nav-tabs-inner{
  display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-tabs-inner::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;font-size:14px;font-weight:500;color:var(--ink-600);
  transition:color .2s ease, background .2s ease;
}
.tab:hover{color:var(--brand-600);background:var(--brand-100);text-decoration:none;}
.tab.active{color:#fff;background:var(--brand-600);font-weight:600;}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line-200);}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-600);padding:14px 0;
}
.crumb a{color:var(--ink-600);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#B8C3D1;}
.crumb .current{color:var(--ink-900);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(14,61,143,.90) 0%,rgba(22,87,196,.82) 52%,rgba(15,169,142,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;padding:64px 0 60px;max-width:840px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.page-hero h1{
  color:#fff;font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;letter-spacing:.2px;
}
.page-hero .lead{
  margin-top:16px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.90);max-width:720px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  border-radius:10px;padding:9px 14px;font-size:13px;font-weight:500;color:#fff;
}
.hero-chip i{color:#BDF0E5;}

/* ---------- section shell ---------- */
.section{padding:var(--section-y) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line-200);border-bottom:1px solid var(--line-200);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-100);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;}
.section-head p{margin-top:14px;color:var(--ink-600);font-size:16px;}

/* ---------- split checklist ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
.split-note{}
.note-card{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
}
.note-card h3{font-size:20px;line-height:1.45;font-weight:600;margin-bottom:14px;}
.note-card p{color:var(--ink-600);font-size:15.5px;margin-bottom:14px;}
.note-card p:last-of-type{margin-bottom:0;}
.note-figure{
  margin-top:20px;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-200);background:#fff;
}
.note-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.note-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-weight:600;font-size:15px;}
.note-link i{font-size:12px;transition:transform .2s ease;}
.note-link:hover i{transform:translateX(3px);}
.note-mini{
  display:flex;gap:20px;margin-top:20px;padding-top:18px;border-top:1px dashed var(--line-200);
}
.note-mini div{flex:1;}
.note-mini strong{display:block;font-size:22px;font-weight:700;color:var(--brand-600);line-height:1.2;}
.note-mini span{font-size:13px;color:var(--ink-600);}

.num-list{display:grid;gap:14px;counter-reset:none;}
.num-item{
  display:flex;gap:18px;align-items:flex-start;background:#fff;
  border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease, border-color .2s ease, transform .2s ease;
}
.num-item:hover{box-shadow:var(--shadow-lg);border-color:#CFDCEF;transform:translateY(-2px);}
.num-badge{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);
  font-weight:700;font-size:15px;letter-spacing:.5px;
}
.num-body h3{font-size:16.5px;font-weight:600;line-height:1.45;}
.num-body p{margin-top:6px;font-size:14.5px;color:var(--ink-600);}
.num-body .tag-line{
  margin-top:10px;display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--accent-500);
}
.num-body .tag-line i{font-size:11px;}

/* ---------- level cards ---------- */
.level-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.level-card{
  position:relative;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.level-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#CFDCEF;}
.level-card.featured{border:1.5px solid var(--brand-600);}
.level-card.featured::before{
  content:"推荐档";position:absolute;top:-12px;right:18px;
  background:var(--amber-500);color:#3B2500;font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:999px;letter-spacing:.4px;
}
.level-badge{
  align-self:flex-start;display:inline-flex;align-items:center;gap:6px;
  background:var(--amber-100);color:#8A5400;font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.level-card h3{font-size:19px;font-weight:700;}
.level-card .level-sub{margin-top:8px;font-size:14px;color:var(--ink-600);min-height:44px;}
.level-points{margin-top:16px;display:grid;gap:9px;flex:1 1 auto;}
.level-points li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:var(--ink-900);}
.level-points i{color:var(--accent-500);font-size:12px;margin-top:5px;flex:0 0 auto;}
.level-card .btn-ghost,.level-card .btn-brand{margin-top:20px;width:100%;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:32px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand-600),var(--accent-500));
  opacity:.32;
}
.tl-item{position:relative;padding:0 0 26px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-600);
}
.tl-item.done::before{border-color:var(--accent-500);}
.tl-card{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease, border-color .2s ease;
}
.tl-card:hover{box-shadow:var(--shadow-lg);border-color:#CFDCEF;}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.tl-head h3{font-size:17px;font-weight:600;}
.tl-status{
  font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:var(--accent-100);color:#0A7E6A;
}
.tl-status.pending{background:var(--brand-100);color:var(--brand-700);}
.tl-card p{margin-top:10px;font-size:14.5px;color:var(--ink-600);}
.tl-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:14px;font-size:13px;color:var(--ink-600);}
.tl-meta span{display:inline-flex;align-items:center;gap:7px;}
.tl-meta i{color:var(--brand-600);font-size:12px;}

/* ---------- scenario cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#CFDCEF;}
.card-media{position:relative;overflow:hidden;background:#EDF1F7;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid rgba(0,0,0,.04);}
.card-media .pill{
  position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);
  color:var(--brand-700);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{font-size:17.5px;font-weight:600;line-height:1.45;}
.card-body p{margin-top:10px;font-size:14.5px;color:var(--ink-600);flex:1 1 auto;}
.card-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line-200);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-600);
}
.card-foot a{font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card-foot a i{font-size:11px;transition:transform .2s ease;}
.card-foot a:hover i{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  background:#fff;border:0;border-bottom:1px solid var(--line-200);
}
.accordion-item:first-child{border-top:1px solid var(--line-200);}
.accordion-button{
  background:#fff;color:var(--ink-900);font-size:17px;font-weight:600;
  padding:20px 4px;box-shadow:none;border-radius:0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.accordion-button:not(.collapsed){color:var(--brand-600);background:#fff;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  background-image:none;width:auto;height:auto;color:var(--ink-600);
  transition:transform .2s ease,color .2s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand-600);}
.accordion-body{padding:0 4px 22px;font-size:15px;color:var(--ink-600);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-600);border-radius:var(--radius-card);
  padding:48px 40px;color:#fff;display:flex;flex-wrap:wrap;gap:24px;
  align-items:center;justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.4vw,28px);font-weight:700;}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.88);font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.cta-actions .text-link{color:#fff;font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:4px;}
.cta-actions .text-link:hover{color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line-200);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding:56px 0 36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px;}
.footer-brand .brand-text{font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;color:var(--ink-600);line-height:1.75;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-600);}
.footer-col ul a:hover{color:var(--brand-600);text-decoration:none;}
.footer-contact{display:grid;gap:10px;}
.footer-contact .row-line{
  display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-600);
  border-bottom:1px dashed var(--line-200);padding-bottom:8px;
}
.footer-contact .row-line span:last-child{color:var(--ink-900);font-weight:500;text-align:right;}
.footer-bottom{
  border-top:1px solid var(--line-200);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-600);
}
.footer-bottom .legal{color:#8B98A8;}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-600);color:#fff;border:0;display:inline-flex;
  align-items:center;justify-content:center;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease, transform .2s ease, visibility .2s ease, background .2s ease;
  z-index:1040;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .level-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px;}
}
@media (max-width:991.98px){
  :root{--section-y:56px;}
  .header-search{display:none;}
  .header-top-inner{min-height:62px;gap:14px;}
  .header-actions{margin-left:auto;}
  .split{grid-template-columns:1fr;gap:24px;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .nav-tabs-inner{
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 22px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 22px),transparent 100%);
  }
  .page-hero-inner{padding:52px 0 48px;}
}
@media (max-width:767.98px){
  :root{--section-y:40px;}
  .container{padding-left:18px;padding-right:18px;}
  .grid-3{grid-template-columns:1fr;}
  .level-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:40px 0 26px;}
  .cta-band{padding:34px 24px;}
  .timeline{padding-left:26px;}
  .tl-item::before{left:-25px;}
  .brand-text{font-size:17px;}
  .num-item{padding:18px;gap:14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .header-actions .link-login{display:none;}
  .btn-brand{padding:8px 16px;font-size:13px;}
  .hero-meta{gap:8px;}
  .hero-chip{font-size:12.5px;padding:8px 12px;}
  .search-btn{padding:7px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --brand:#1657C4;
  --brand-dark:#0E3D8F;
  --brand-light:#E8F0FE;
  --green:#0FA98E;
  --green-light:#E4F6F2;
  --amber:#F5A524;
  --amber-light:#FEF3E0;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --ink:#16202E;
  --ink-soft:#5A6B7F;
  --line:#E3E8EF;
  --danger:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
  --shadow-2:0 2px 4px rgba(16,32,64,.06),0 16px 36px rgba(16,32,64,.10);
  --bs-primary:#1657C4;
  --bs-primary-rgb:22,87,196;
  --bs-body-color:#16202E;
  --bs-body-bg:#F6F8FB;
  --bs-border-radius:10px;
  --bs-border-radius-lg:14px;
  --bs-border-color:#E3E8EF;
  --bs-link-color:#1657C4;
  --bs-link-hover-color:#0E3D8F;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,"Inter",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(16,32,64,.04)}
.nav-main-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;font-weight:700;font-size:14px;letter-spacing:.6px}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.4px}
.search-box{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;background:#F2F5FA;border:1px solid var(--line);border-radius:var(--radius-input);transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,87,196,.12)}
.search-box svg{flex:0 0 auto;color:var(--ink-soft)}
.search-box input{flex:1;height:100%;border:0;background:transparent;font-size:14px;color:var(--ink);outline:none}
.search-box input::placeholder{color:#93A1B2}
.search-box button{height:28px;padding:0 8px;border:0;border-radius:8px;background:var(--brand);color:#fff;font-size:13px;font-weight:600;cursor:pointer;transition:background .2s ease}
.search-box button:hover{background:var(--brand-dark)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn-login{padding:8px 14px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;color:var(--ink-soft)}
.btn-login:hover{color:var(--brand);background:var(--brand-light)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0;place-items:center;color:var(--ink)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 按钮体系 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;text-decoration:none}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(16,32,64,.06)}
.btn-brand:hover{background:var(--brand-dark);color:#fff}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9DAF6}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand)}
.btn-onbrand{background:#fff;color:var(--brand)}
.btn-onbrand:hover{background:#EAF1FE;color:var(--brand-dark)}
.btn-sm{height:36px;padding:0 15px;font-size:14px}

/* 频道 Tabs */
.nav-tabs-bar{background:#fff;border-top:1px solid var(--line)}
.nav-tabs-inner{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-tabs-inner::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;padding:7px 15px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-soft);white-space:nowrap;transition:background-color .2s ease,color .2s ease}
.tab:hover{color:var(--brand-dark);background:var(--brand-light)}
.tab.active{background:var(--brand);color:#fff;font-weight:600}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-panel.open{display:block}
.mobile-panel ul{padding:10px 24px 18px}
.mobile-panel a{display:block;padding:11px 0;font-size:15px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-panel a.active{color:var(--brand);font-weight:700}
.mobile-panel a:last-child{border-bottom:0}

/* ============ 页头 ============ */
.page-hero{padding:26px 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,#EDF3FE 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.035;background-image:linear-gradient(rgba(14,61,143,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(14,61,143,.9) 1px,transparent 1px);background-size:46px 46px}
.page-hero .container{position:relative;z-index:1}
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);padding:0;margin:0 0 22px}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";color:#B7C3D2}
.breadcrumbs a{color:var(--ink-soft)}
.breadcrumbs a:hover{color:var(--brand)}
.breadcrumbs [aria-current]{color:var(--ink);font-weight:600}
.page-hero-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:44px;align-items:end}
.eyebrow{display:inline-block;padding:5px 13px;border-radius:999px;background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.4px}
.page-hero h1{margin:16px 0 16px;font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700}
.page-hero-sub{max-width:660px;font-size:17px;line-height:1.75;color:var(--ink-soft)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:22px}
.hero-card-head{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink-soft);letter-spacing:.4px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(15,169,142,.14)}
.hero-stats{display:grid;gap:14px;margin-top:18px;padding-top:18px;border-top:1px dashed var(--line)}
.hero-stats li{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.hero-stats strong{font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:26px;font-weight:700;color:var(--brand);line-height:1}
.hero-stats span{font-size:13.5px;color:var(--ink-soft)}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:38px}
.section-head h2{margin:14px 0 12px;font-size:clamp(22px,2.6vw,32px);line-height:1.35}
.section-head p{color:var(--ink-soft);font-size:16px}
.pill{display:inline-block;padding:4px 12px;border-radius:999px;background:var(--brand-light);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.3px}
.pill-green{background:var(--green-light);color:#0B7D69}
.pill-amber{background:var(--amber-light);color:#9A6408}

/* 速览条 */
.quick-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.quick-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.quick-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFDDF5}
.quick-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--brand-light);color:var(--brand);margin-bottom:14px}
.quick-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.quick-item p{font-size:14px;color:var(--ink-soft);line-height:1.65}

/* 图文交替 */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.feature-row+.feature-row{margin-top:72px}
.feature-row.reverse .feature-media{order:2}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);border:1px solid rgba(0,0,0,.04);box-shadow:var(--shadow-1)}
.feature-body h3{margin:14px 0 14px;font-size:22px;line-height:1.45}
.feature-body p{color:var(--ink-soft);margin-bottom:14px;font-size:16px}
.feature-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(22,87,196,.35);padding-bottom:2px}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}

/* 时间线 */
.rhythm-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rhythm-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-1)}
.rhythm-item::before{content:"";position:absolute;left:22px;top:0;width:42px;height:3px;border-radius:0 0 4px 4px;background:var(--brand)}
.rhythm-time{font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:600;color:var(--green);letter-spacing:.5px}
.rhythm-item h3{margin:12px 0 10px;font-size:17px;font-weight:600}
.rhythm-item p{font-size:14.5px;color:var(--ink-soft)}

/* FAQ */
.faq-accordion{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:6px 24px;box-shadow:var(--shadow-1)}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-button{background:transparent;color:var(--ink);font-size:17px;font-weight:600;padding:20px 0;box-shadow:none;border-radius:0;line-height:1.5}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand)}
.faq-accordion .accordion-button::after{width:16px;height:16px;background-size:16px;transition:transform .2s ease}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-accordion .accordion-body{padding:0 0 20px;font-size:15px;line-height:1.75;color:var(--ink-soft)}

/* CTA */
.cta-band{background:var(--brand);color:#fff;padding:56px 0}
.cta-inner{display:grid;grid-template-columns:1.5fr .5fr;gap:32px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(21px,2.4vw,28px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.88);font-size:16px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;justify-content:flex-end}
.cta-link{color:#fff;font-size:15px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px}
.cta-link:hover{color:#fff;border-bottom-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:13px}
.footer-brand .brand-text{font-size:17px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.75;color:var(--ink-soft);max-width:320px}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--ink-soft)}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline}
.footer-contact .row-line{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--ink-soft);padding:8px 0;border-bottom:1px dashed var(--line)}
.footer-contact .row-line span:last-child{color:var(--ink);font-weight:500}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;margin-top:40px;padding:18px 0 22px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-soft)}
.footer-bottom .legal{color:#8794A6}

/* 返回顶部 */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:50%;background:var(--brand);color:#fff;box-shadow:var(--shadow-2);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .2s ease;z-index:1040}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-dark)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-hero-grid{grid-template-columns:1.5fr .5fr;gap:32px}
  .feature-row{gap:36px}
}
@media (max-width:991px){
  .search-box,.btn-login{display:none}
  .nav-toggle{display:grid}
  .page-hero{padding:22px 0 44px}
  .page-hero-grid{grid-template-columns:1fr;gap:28px;align-items:start}
  .quick-strip{grid-template-columns:repeat(2,1fr)}
  .rhythm-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;gap:22px}
  .cta-actions{justify-content:flex-start}
  .section{padding:56px 0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .feature-row{grid-template-columns:1fr;gap:20px}
  .feature-row.reverse .feature-media{order:0}
  .feature-row+.feature-row{margin-top:48px}
  .feature-media img{aspect-ratio:16/9}
  .section{padding:40px 0}
  .section-head{margin-bottom:26px}
  .quick-strip{grid-template-columns:1fr;gap:14px}
  .faq-accordion{padding:4px 18px}
  .faq-accordion .accordion-button{font-size:16px;padding:17px 0}
  .cta-band{padding:44px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
  .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:520px){
  .brand-text{font-size:17px}
  .nav-main-inner{height:62px;gap:14px}
  .hero-stats strong{font-size:23px}
  .btn{height:40px;padding:0 16px;font-size:14.5px}
}

/* roulang page: category5 */
:root{
  --brand-050:#E8F0FE;
  --brand-100:#D3E2FC;
  --brand-500:#1657C4;
  --brand-700:#0E3D8F;
  --accent-500:#0FA98E;
  --accent-050:#E3F6F1;
  --warm-500:#F5A524;
  --warm-050:#FDF3E1;
  --ink-900:#16202E;
  --ink-600:#5A6B7F;
  --bg-page:#F6F8FB;
  --bg-card:#FFFFFF;
  --line-200:#E3E8EF;
  --danger-500:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,32,64,.04),0 8px 24px rgba(16,32,64,.06);
  --shadow-2:0 2px 4px rgba(16,32,64,.06),0 16px 36px rgba(16,32,64,.10);
  --bs-primary:#1657C4;
  --bs-body-color:#16202E;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.7;color:var(--ink-900);background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700);text-decoration:underline}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--ink-900)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;box-shadow:0 1px 0 var(--line-200)}
.topbar{background:#fff;border-bottom:1px solid var(--line-200)}
.topbar-inner{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.2px}
.search-box{position:relative;flex:1 1 auto;max-width:420px}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:var(--ink-600)}
.search-box input{
  width:100%;height:42px;border-radius:var(--radius-btn);
  border:1px solid var(--line-200);background:var(--bg-page);
  padding:0 14px 0 42px;font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box input::placeholder{color:#94A3B4}
.search-box input:focus{outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(22,87,196,.12)}
.topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:16px;
  padding:11px 22px;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-sm{padding:9px 18px;font-size:15px}
.btn-brand{background:var(--brand-500);color:#fff}
.btn-brand:hover{background:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 10px 24px rgba(22,87,196,.22)}
.btn-ghost{background:#fff;border-color:var(--line-200);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-050);text-decoration:none;transform:translateY(-2px)}
.btn-inverse{background:#fff;color:var(--brand-700)}
.btn-inverse:hover{background:var(--brand-050);color:var(--brand-700);text-decoration:none;transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.65);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none;border-color:#fff}
.btn-text{color:var(--ink-600);font-weight:600;font-size:15px;padding:10px 4px}
.btn-text:hover{color:var(--brand-700);text-decoration:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-btn);
  border:1px solid var(--line-200);background:#fff;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.nav-toggle:hover{border-color:var(--brand-500)}
.mobile-panel{border-top:1px solid var(--line-200);background:#fff}
.mobile-panel .container{padding-top:16px;padding-bottom:20px}
.mobile-links{display:grid;gap:4px;margin:14px 0 16px}
.mobile-links a{display:block;padding:11px 12px;border-radius:10px;color:var(--ink-900);font-weight:500}
.mobile-links a:hover{background:var(--brand-050);color:var(--brand-700);text-decoration:none}
.mobile-links a.active{background:var(--brand-050);color:var(--brand-700);font-weight:600}

.nav-tabs-bar{background:#fff;border-bottom:1px solid var(--line-200)}
.nav-tabs-inner{
  display:flex;align-items:center;gap:8px;height:52px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.nav-tabs-inner::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:var(--ink-600);white-space:nowrap;
  border-bottom:2px solid transparent;transition:all .2s ease;
}
.tab:hover{background:var(--brand-050);color:var(--brand-700);text-decoration:none}
.tab.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;border-bottom-color:var(--brand-500)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;padding:56px 0 60px;
  background-color:#EAF1FC;
  background-image:linear-gradient(180deg,rgba(240,245,253,.94),rgba(246,248,251,.98)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-200);
}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);margin-bottom:18px}
.breadcrumb-line a{color:var(--ink-600)}
.breadcrumb-line a:hover{color:var(--brand-700)}
.breadcrumb-line span.sep{color:#B4C0CF}
.page-head-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.page-head h1{font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.5px}
.page-head .lead{margin-top:16px;font-size:17px;line-height:1.75;color:var(--ink-600);max-width:620px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;
}
.pill-accent{background:var(--accent-050);color:#0B7C69}
.pill-warm{background:var(--warm-050);color:#9A6413}
.head-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid rgba(0,0,0,.04)}
.head-media img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--line-200);border-bottom:1px solid var(--line-200)}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1px;color:var(--brand-700);
  text-transform:none;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-500);border-radius:2px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35}
.section-head p{margin-top:14px;color:var(--ink-600);font-size:16px;line-height:1.75}

/* ---------- 数据卡横排 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.metric-card{
  background:var(--bg-card);border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:24px 20px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.metric-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-100)}
.metric-value{font-size:clamp(24px,2.4vw,32px);font-weight:700;color:var(--brand-700);line-height:1.2}
.metric-value span{font-size:14px;font-weight:600;color:var(--ink-600);margin-left:4px}
.metric-label{margin-top:10px;font-size:14px;color:var(--ink-600)}
.metric-note{margin-top:12px;font-size:13px;color:#8794A5;border-top:1px dashed var(--line-200);padding-top:10px}

/* ---------- 面板预览 7:5 ---------- */
.panel-split{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.panel-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(0,0,0,.04);box-shadow:var(--shadow-1);min-height:320px;
}
.panel-media img{width:100%;height:100%;object-fit:cover}
.panel-media .media-cap{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(4px);
  border-radius:10px;padding:10px 14px;font-size:13px;color:var(--ink-900);
  box-shadow:var(--shadow-1);
}
.panel-side{
  background:var(--bg-card);border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
}
.panel-side h3{font-size:20px;font-weight:600}
.panel-side .side-sub{margin-top:8px;font-size:14px;color:var(--ink-600)}
.status-list{margin-top:20px;display:grid;gap:12px;flex:1 1 auto}
.status-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:10px;background:var(--bg-page);border:1px solid var(--line-200);
}
.status-item .name{font-size:15px;font-weight:500;color:var(--ink-900)}
.state{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600}
.state-ok{color:#0B7C69}
.state-ok::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent-500)}
.state-vip{color:var(--brand-700)}
.state-vip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-500)}
.state-hold{color:#9A6413}
.state-hold::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--warm-500)}
.side-foot{margin-top:20px;padding-top:18px;border-top:1px solid var(--line-200);font-size:14px;color:var(--ink-600)}

/* ---------- 支持通道 ---------- */
.channel-list{display:grid;gap:16px}
.channel-row{
  display:grid;grid-template-columns:64px 5fr 4fr;gap:24px;align-items:center;
  background:var(--bg-card);border:1px solid var(--line-200);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.channel-row:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-100)}
.channel-num{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);font-weight:700;font-size:18px;
}
.channel-main h3{font-size:18px;font-weight:600}
.channel-main p{margin-top:8px;font-size:15px;color:var(--ink-600)}
.channel-meta{display:grid;gap:8px;justify-items:start}
.meta-line{font-size:14px;color:var(--ink-600)}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;background:var(--accent-050);color:#0B7C69;
}
.badge-soft.is-warm{background:var(--warm-050);color:#9A6413}
.badge-soft.is-brand{background:var(--brand-050);color:var(--brand-700)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{border:0;border-bottom:1px solid var(--line-200);background:transparent}
.accordion-item:first-of-type{border-top:1px solid var(--line-200)}
.accordion-button{
  background:transparent;color:var(--ink-900);font-size:17px;font-weight:600;
  padding:22px 48px 22px 0;box-shadow:none;border-radius:0;line-height:1.5;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--brand-500);outline-offset:-2px}
.accordion-button::after{
  width:18px;height:18px;background-size:18px;margin-left:auto;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235A6B7F' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  transition:transform .2s ease;
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231657C4' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  transform:rotate(180deg);
}
.accordion-button:hover{color:var(--brand-700)}
.accordion-body{padding:0 48px 22px 0;font-size:15px;line-height:1.8;color:var(--ink-600)}
.accordion-body p+p{margin-top:10px}
.accordion-body strong{color:var(--ink-900);font-weight:600}

/* ---------- CTA ---------- */
.cta-section{background:var(--brand-500);padding:60px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-text h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.cta-text p{color:rgba(255,255,255,.86);margin-top:12px;font-size:16px;max-width:620px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-link{color:rgba(255,255,255,.9);font-size:15px;font-weight:500;text-decoration:underline;text-underline-offset:4px}
.cta-link:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line-200);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px}
.footer-brand .brand-text{font-size:17px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--ink-600);max-width:340px}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--ink-900)}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-600)}
.footer-col ul a:hover{color:var(--brand-700)}
.footer-contact{display:grid;gap:10px}
.row-line{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-600)}
.row-line span:first-child{color:#8794A5}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-200);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8794A5;
}
.footer-bottom p{margin:0}
.legal{color:#9AA7B6}

/* ---------- 返回顶部 ---------- */
#backTop{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-500);border:0;color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(22,87,196,.28);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s ease;z-index:1040;
}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{background:var(--brand-700)}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .metric-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .search-box{display:none}
  .btn-text{display:none}
  .nav-toggle{display:flex}
  .page-head{padding:40px 0 44px}
  .page-head-grid{grid-template-columns:1fr;gap:28px}
  .head-media{order:-1}
  .panel-split{grid-template-columns:1fr}
  .channel-row{grid-template-columns:48px 1fr;gap:16px 20px}
  .channel-meta{grid-column:1 / -1;justify-items:start;grid-auto-flow:column;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:56px 0}
}
@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-inner{min-height:62px;gap:14px}
  .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px}
  .brand-text{font-size:17px}
  .section{padding:40px 0}
  .section-head{margin-bottom:24px}
  .metric-grid{grid-template-columns:1fr 1fr;gap:16px}
  .metric-card{padding:18px 16px}
  .panel-side{padding:20px}
  .channel-row{padding:18px 16px}
  .accordion-button{font-size:16px;padding:18px 40px 18px 0}
  .accordion-body{padding:0 0 18px 0}
  .cta-section{padding:44px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-desc{max-width:none}
  #backTop{right:16px;bottom:18px}
}
@media (max-width:520px){
  .metric-grid{grid-template-columns:1fr}
  .head-actions .btn{width:100%}
}