/* roulang page: index */
:root{
  --brand-deep:#16264D;
  --brand-blue:#2E63C8;
  --brand-blue-2:#2856AE;
  --mist:#EEF3FC;
  --mist-2:#F3F7FE;
  --line:#DCE5F5;
  --gold:#E9A93B;
  --page:#F7F9FD;
  --card:#FFFFFF;
  --ink:#33415C;
  --ink-strong:#16202E;
  --muted:#6B7A93;
  --ok:#2F9E6B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --r-block:20px;
  --sh-1:0 1px 2px rgba(16,28,58,.06);
  --sh-2:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-3:0 18px 40px -16px rgba(16,28,58,.20);
  --shell-w:236px;
  --bs-primary:#2E63C8;
  --bs-body-color:#33415C;
  --bs-border-color:#DCE5F5;
  --bs-link-color:#16264D;
  --bs-link-hover-color:#2E63C8;
  --bs-border-radius:16px;
  --bs-border-radius-sm:10px;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}
a:hover{color:var(--brand-blue)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:38px;line-height:1.3;font-weight:700;color:var(--ink-strong)}
h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--ink-strong)}
h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink-strong)}
h4{font-size:17px;line-height:1.6;font-weight:600;color:var(--ink-strong)}
::selection{background:var(--mist);color:var(--brand-deep)}
:focus-visible{outline:2px solid var(--brand-blue);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand-deep);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.skip:focus{left:0}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}
.sprk{color:var(--gold);font-size:.72em;line-height:1;display:inline-block;transform:translateY(-2px)}
.section{padding:88px 0}
.section-head{margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.02em;font-weight:500;color:var(--brand-blue);background:var(--mist);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.link-more{font-weight:600;font-size:15px;white-space:nowrap;border-bottom:2px solid transparent}
.link-more:hover{border-bottom-color:var(--brand-blue)}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1.2;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-main{background:var(--brand-blue);color:#fff}
.btn-main:hover{background:var(--brand-blue-2);color:#fff;transform:translateY(-1px)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line)}
.btn-ghost:hover{background:var(--mist);color:var(--brand-deep);transform:translateY(-1px)}
.btn-gold{background:var(--gold);color:var(--brand-deep)}
.btn-gold:hover{background:#dea032;color:var(--brand-deep);transform:translateY(-1px)}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-gold:focus-visible{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--brand-blue)}

/* ---------- 左侧 App Shell ---------- */
.shell{
  position:fixed;top:0;left:0;width:var(--shell-w);height:100vh;height:100dvh;
  background:var(--brand-deep);color:#fff;z-index:60;
  display:flex;flex-direction:column;transition:transform .2s ease;
}
.shell-head{height:72px;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid rgba(255,255,255,.10);flex:0 0 auto}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo:hover{color:#fff}
.logo-mark{width:32px;height:32px;border-radius:10px;background:rgba(255,255,255,.08);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:16px;flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:15px;font-weight:700;letter-spacing:0}
.logo-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.62)}
.shell-nav{flex:1 1 auto;overflow-y:auto;padding:20px 0 8px}
.nav-label{font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.4);padding:0 20px;margin-bottom:8px}
.nav-list{margin-bottom:20px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 20px;color:rgba(255,255,255,.72);font-size:15px;
}
.nav-item .nav-ico{font-size:13px;color:rgba(255,255,255,.45);flex:0 0 18px;text-align:center}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item:hover .nav-ico{color:var(--gold)}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--gold);border-radius:0 3px 3px 0}
.nav-item.is-active .nav-ico{color:var(--gold)}
.shell-cta{flex:0 0 auto;padding:16px 20px 24px;border-top:1px solid rgba(255,255,255,.10)}
.shell-cta .btn-gold{width:100%}
.shell-note{font-size:12px;color:rgba(255,255,255,.5);margin-top:10px;line-height:1.6}
.shell-overlay{position:fixed;inset:0;background:rgba(16,28,58,.5);z-index:55;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease}
.shell-overlay.on{opacity:1;visibility:visible}

/* ---------- 移动端顶栏 ---------- */
.topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-1);z-index:50;align-items:center;justify-content:space-between;padding:0 16px}
.topbar .logo{color:var(--brand-deep)}
.topbar .logo-mark{background:var(--mist);color:var(--brand-blue)}
.topbar .logo-text strong{color:var(--brand-deep)}
.topbar .logo-text em{color:var(--muted)}
.burger{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px}
.burger:hover{background:var(--mist)}

/* ---------- 主内容 ---------- */
.shell-main{margin-left:var(--shell-w);min-height:100vh}
.inner{width:100%;max-width:1120px;margin:0 auto;padding:0 32px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 88px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:radial-gradient(rgba(22,38,77,.9) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.hero h1{margin:16px 0 20px}
.hero-sub{font-size:17px;color:var(--ink);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 24px}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.trust-item .sprk{font-size:11px}
.hero-media{position:relative;border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;background:var(--brand-deep)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(22,38,77,.12),rgba(22,38,77,0) 65%);
}
.hero-media-tag{position:absolute;left:16px;bottom:16px;z-index:2;background:rgba(255,255,255,.94);border-radius:var(--r-pill);padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand-deep)}
.hero-media-tag .sprk{margin-right:6px}

/* ---------- 价值主张 ---------- */
.value-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start}
.value-list{margin-top:24px;display:grid;gap:14px}
.value-list li{display:flex;gap:12px;font-size:15.5px;line-height:1.8}
.value-list .sprk{margin-top:9px}
.data-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:24px}
.data-card h3{font-size:18px;margin-bottom:4px}
.data-card .data-note{font-size:13px;color:var(--muted);margin-bottom:20px}
.data-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.data-row:last-child{border-bottom:0}
.data-row .k{font-size:14px;color:var(--muted)}
.data-row .v{font-size:20px;font-weight:700;color:var(--brand-deep)}
.data-row .v small{font-size:12px;font-weight:500;color:var(--muted);margin-left:4px}
.data-bar{height:6px;border-radius:var(--r-pill);background:var(--mist);overflow:hidden;margin-top:8px}
.data-bar i{display:block;height:100%;border-radius:var(--r-pill);background:var(--brand-blue)}
.data-card-media{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;margin-bottom:20px}
.data-card-media img{width:100%;height:100%;object-fit:cover}

/* ---------- Bento 功能 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.b-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px;transition:transform .18s ease,box-shadow .18s ease;display:flex;flex-direction:column}
.b-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.b-card h3{margin:14px 0 10px}
.b-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.b-card .card-link{margin-top:auto;font-weight:600;font-size:14px;color:var(--brand-deep)}
.b-card .card-link:hover{color:var(--brand-blue)}
.b-ico{width:38px;height:38px;border-radius:10px;background:var(--mist);color:var(--brand-blue);display:flex;align-items:center;justify-content:center;font-size:16px}
.b-8{grid-column:span 8}
.b-4{grid-column:span 4}
.b-6{grid-column:span 6}
.b-3{grid-column:span 3}
.b-card.feature{background:var(--brand-deep);border-color:var(--brand-deep)}
.b-card.feature h3,.b-card.feature .card-link{color:#fff}
.b-card.feature p{color:rgba(255,255,255,.72)}
.b-card.feature .b-ico{background:rgba(255,255,255,.1);color:var(--gold)}
.b-card.feature .card-link:hover{color:var(--gold)}
.b-media{aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;margin-top:20px}
.b-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 使用场景 ---------- */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:8px}
.scene{position:relative;padding:0 32px}
.scene:first-child{padding-left:0}
.scene:last-child{padding-right:0}
.scene + .scene::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:linear-gradient(to bottom,rgba(46,99,200,0),rgba(46,99,200,.55),rgba(46,99,200,0))}
.scene-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-blue);margin-bottom:12px;display:block}
.scene h3{margin-bottom:12px}
.scene p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.scene ul{display:grid;gap:10px}
.scene li{display:flex;gap:10px;font-size:14.5px}
.scene li .sprk{margin-top:8px}
.scene-stats{display:flex;gap:24px;margin-top:20px}
.scene-stats div b{font-size:22px;font-weight:700;color:var(--brand-deep);display:block;line-height:1.2}
.scene-stats div span{font-size:12px;color:var(--muted)}

/* ---------- 成功案例 ---------- */
.cases{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px}
.case-main{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column}
.case-main .case-media{aspect-ratio:16/9;overflow:hidden}
.case-main .case-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.case-main:hover .case-media img{transform:scale(1.02)}
.case-body{padding:28px}
.case-body h3{margin-bottom:10px}
.case-body p{font-size:14.5px;color:var(--muted)}
.metrics{display:flex;gap:32px;margin-top:24px;flex-wrap:wrap}
.metric b{font-size:28px;font-weight:700;color:var(--brand-deep);line-height:1.15;display:block}
.metric b small{font-size:13px;font-weight:500;color:var(--muted);margin-left:2px}
.metric span{font-size:13px;color:var(--muted)}
.case-mini{display:grid;gap:24px}
.case-item{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:20px;transition:transform .18s ease,box-shadow .18s ease}
.case-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.case-thumb{width:88px;height:88px;border-radius:var(--r-img);overflow:hidden;flex:0 0 auto}
.case-thumb img{width:100%;height:100%;object-fit:cover}
.case-item h4{margin-bottom:6px}
.case-item p{font-size:13.5px;color:var(--muted);margin-bottom:8px}
.case-item .metric b{font-size:20px}

/* ---------- 方案价格 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:32px 28px;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.plan:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.plan.hot{border-color:#EAD9B4;box-shadow:var(--sh-2)}
.plan.hot::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gold);border-radius:var(--r-card) var(--r-card) 0 0}
.plan-badge{position:absolute;top:20px;right:20px;background:var(--gold);color:var(--brand-deep);font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:4px 12px}
.plan h3{font-size:19px;margin-bottom:6px}
.plan .plan-note{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.plan .price{font-size:32px;font-weight:700;color:var(--brand-deep);line-height:1.2}
.plan .price small{font-size:14px;font-weight:500;color:var(--muted);margin-left:4px}
.plan ul{display:grid;gap:12px;margin:24px 0}
.plan li{display:flex;gap:10px;font-size:14.5px}
.plan li .sprk{margin-top:8px}
.plan .btn-main,.plan .btn-ghost{width:100%;margin-top:auto}
.cmp-wrap{margin-top:32px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
.cmp-scroll{overflow-x:auto}
table.cmp{width:100%;border-collapse:collapse;min-width:640px}
table.cmp th,table.cmp td{height:52px;padding:0 20px;vertical-align:middle;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
table.cmp thead th{background:var(--mist);color:var(--brand-deep);font-weight:600;font-size:14px}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp td:first-child{color:var(--ink);font-weight:500}
table.cmp td{color:var(--muted)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.n-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.n-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.n-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--mist)}
.n-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.n-card:hover .n-thumb img{transform:scale(1.02)}
.n-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.n-badge{align-self:flex-start;background:var(--mist);color:var(--brand-blue);font-size:12px;font-weight:500;letter-spacing:.02em;border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px}
.n-card h3{font-size:17px;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.n-card h3 a{color:var(--ink-strong)}
.n-card h3 a:hover{color:var(--brand-blue)}
.n-card p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.n-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.n-foot a{font-weight:600;font-size:13.5px}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;padding:48px 24px;text-align:center}
.empty-state p{color:var(--muted);margin-bottom:20px}
.pager{display:flex;gap:8px;justify-content:center;margin-top:32px}
.pager a,.pager span{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-strong)}
.pager a:hover{background:var(--mist)}
.pager .on{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}

/* ---------- FAQ ---------- */
.faq-narrow{max-width:840px;margin:0 auto}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  padding:20px 0;font-size:18px;font-weight:600;color:var(--ink-strong);
  background:transparent;box-shadow:none;border:0;display:flex;align-items:center;gap:12px;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-blue);background:transparent}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--brand-blue);outline-offset:2px}
.faq-acc .accordion-button::after{display:none}
.faq-star{color:var(--gold);font-size:14px;transition:transform .18s ease;flex:0 0 auto}
.faq-acc .accordion-button:not(.collapsed) .faq-star{transform:rotate(180deg)}
.faq-acc .accordion-body{padding:0 0 24px;font-size:15.5px;color:var(--muted);line-height:1.85}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;background:var(--mist);border:1px solid var(--line);border-radius:var(--r-block);padding:56px 32px;text-align:center;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-20px;top:-20px;width:280px;height:280px;pointer-events:none;opacity:.08;
  background-image:radial-gradient(rgba(22,38,77,.9) 1px,transparent 1px);background-size:22px 22px;
}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--muted);max-width:600px;margin:0 auto 28px}
.cta-band .btn-main{position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.footer{background:var(--brand-deep);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer p{font-size:13.5px;line-height:1.8}
.footer .brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer .logo-mark{background:rgba(255,255,255,.08);color:var(--gold)}
.footer .logo-text strong{color:#fff}
.footer .logo-text em{color:rgba(255,255,255,.6)}
.footer ul{display:grid;gap:10px}
.footer ul a{color:rgba(255,255,255,.72);font-size:14px}
.footer ul a:hover{color:#fff}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.10);padding:24px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
.footer-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.footer-tags span{font-size:12px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-pill);padding:4px 12px;color:rgba(255,255,255,.6)}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  :root{--shell-w:236px}
}
@media (min-width:992px) and (max-width:1199px){
  :root{--shell-w:200px}
  .inner{padding:0 24px}
  h1{font-size:34px}
}
@media (min-width:768px) and (max-width:991px){
  :root{--shell-w:72px}
  .shell-head{justify-content:center;padding:0}
  .logo-text{display:none}
  .shell-nav{padding:16px 0 8px}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-item .nav-txt{display:none}
  .nav-item .nav-ico{font-size:16px;flex:0 0 auto}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:76px;top:50%;transform:translateY(-50%);
    background:var(--brand-deep);color:#fff;font-size:13px;padding:6px 12px;border-radius:8px;
    white-space:nowrap;opacity:0;visibility:hidden;transition:opacity .18s ease;box-shadow:var(--sh-2);
  }
  .nav-item:hover::after,.nav-item:focus-visible::after{opacity:1;visibility:visible}
  .shell-cta{padding:12px 10px 20px}
  .shell-cta .btn-gold{padding:12px 8px;font-size:13px}
  .shell-cta .btn-gold span{display:none}
  .shell-note{display:none}
  .hero-grid,.value-grid,.cases{grid-template-columns:1fr;gap:32px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .b-8,.b-4,.b-6,.b-3{grid-column:span 1}
  .plans{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .scenes{grid-template-columns:1fr;gap:32px}
  .scene{padding:0}
  .scene + .scene::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .shell{transform:translateX(-100%);width:80%;max-width:320px}
  .shell.open{transform:translateX(0)}
  .shell-head{justify-content:flex-start;padding:0 20px}
  .logo-text{display:flex}
  .nav-item .nav-txt{display:inline}
  .nav-label{display:block}
  .nav-item{justify-content:flex-start;padding:0 20px;gap:12px}
  .shell-cta .btn-gold span{display:inline}
  .shell-note{display:block}
  .topbar{display:flex}
  .shell-main{margin-left:0;padding-top:56px}
  .inner{padding:0 20px}
  .hero{padding:40px 0 56px}
  h1{font-size:26px;line-height:1.35}
  h2{font-size:22px}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-main,.btn-ghost,.btn-gold{width:100%}
  .section{padding:56px 0}
  .hero-grid,.value-grid,.cases{grid-template-columns:1fr;gap:24px}
  .trust-row{gap:10px 16px}
  .bento{grid-template-columns:1fr}
  .b-8,.b-4,.b-6,.b-3{grid-column:span 1}
  .b-card{padding:20px}
  .plans{grid-template-columns:1fr}
  .plan{padding:24px 20px}
  .news-grid{grid-template-columns:1fr}
  .scenes{grid-template-columns:1fr;gap:32px}
  .scene{padding:0}
  .scene + .scene::before{display:none}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .cta-band{padding:40px 20px}
  .cmp-wrap{border-radius:var(--r-card)}
  .faq-acc .accordion-button{font-size:16.5px;padding:18px 0}
  .footer{margin-top:56px;padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .b-card:hover,.n-card:hover,.plan:hover,.case-item:hover,.case-main:hover .case-media img,.n-card:hover .n-thumb img{transform:none}
}

/* roulang page: article */
:root{
  --indigo:#16264D;
  --indigo-deep:#101C3A;
  --blue:#2E63C8;
  --blue-dark:#2554AE;
  --mist:#EEF3FC;
  --mist-deep:#F3F7FE;
  --line:#DCE5F5;
  --gold:#E9A93B;
  --bg:#F7F9FD;
  --surface:#FFFFFF;
  --ink:#33415C;
  --head:#16202E;
  --muted:#6B7A93;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --r-block:20px;
  --sh-1:0 1px 2px rgba(16,28,58,.06);
  --sh-2:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-3:0 18px 40px -16px rgba(16,28,58,.20);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --sidebar:236px;
  --bs-primary:#2E63C8;
  --bs-body-color:#33415C;
  --bs-border-color:#DCE5F5;
  --bs-link-color:#16264D;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--indigo);text-decoration:none;}
a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
h1,h2,h3,h4{color:var(--head);margin:0;letter-spacing:0;}
ul,ol{margin:0;padding:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px;}
.btn{transition:transform var(--ease),background-color var(--ease),color var(--ease),box-shadow var(--ease);}
.btn-primary{
  background-color:var(--blue);border:1px solid var(--blue);color:#fff;
  border-radius:var(--r-btn);font-weight:600;padding:12px 24px;box-shadow:none;
}
.btn-primary:hover,.btn-primary:focus{
  background-color:var(--blue-dark);border-color:var(--blue-dark);color:#fff;transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(0);background-color:var(--blue-dark);}
.btn-ghost{
  background:#fff;border:1px solid var(--line);color:var(--indigo);
  border-radius:var(--r-btn);font-weight:600;padding:12px 24px;
}
.btn-ghost:hover{background:var(--mist);color:var(--indigo);border-color:#C9D8F2;text-decoration:none;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;background:var(--mist);color:var(--blue);
  border-radius:var(--r-pill);font-size:12px;font-weight:500;letter-spacing:.02em;padding:4px 12px;
}

/* ============ App Shell 侧栏 ============ */
.shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--indigo);display:flex;flex-direction:column;
  padding-bottom:24px;overflow-y:auto;z-index:60;
}
.shell::-webkit-scrollbar{width:6px;}
.shell::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px;}
.shell-brand{
  height:72px;display:flex;align-items:center;gap:10px;padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.10);flex:none;
}
.logo-mark{
  width:32px;height:32px;flex:none;display:grid;place-items:center;border-radius:9px;
  background:rgba(233,169,59,.16);color:var(--gold);font-size:15px;line-height:1;
}
.logo-text{display:flex;flex-direction:column;line-height:1.3;color:#fff;}
.logo-text strong{font-size:15px;font-weight:700;}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.62);}
.nav-label{
  font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.42);
  margin:24px 20px 8px;
}
.nav-list{list-style:none;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 16px 0 20px;color:rgba(255,255,255,.72);font-size:15px;
  transition:background-color var(--ease),color var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--gold);
}
.nav-ico{font-size:13px;color:var(--gold);opacity:.85;flex:none;}
.nav-txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.shell-cta{margin:auto 16px 0;padding-top:28px;}
.btn-gold{
  display:flex;align-items:center;justify-content:center;height:44px;border-radius:var(--r-btn);
  background:var(--gold);color:var(--indigo-deep);font-weight:600;font-size:15px;
  transition:transform var(--ease),filter var(--ease);
}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);color:var(--indigo-deep);text-decoration:none;}

/* ============ 移动顶栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .logo-text strong{color:var(--indigo);font-size:15px;}
.topbar .logo-text em{color:var(--muted);}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;color:var(--indigo);font-size:18px;cursor:pointer;
}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(16,28,58,.5);z-index:80;
}
.drawer-mask.is-open{display:block;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:80%;max-width:320px;background:var(--indigo);
  z-index:90;transform:translateX(-100%);transition:transform var(--ease);
  display:flex;flex-direction:column;padding-bottom:24px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:9px;
  background:rgba(255,255,255,.08);color:#fff;border:0;font-size:16px;cursor:pointer;
}

/* ============ 主区域 ============ */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 32px;}

/* ============ 面包屑 ============ */
.crumb{padding:24px 0 0;font-size:13px;color:var(--muted);}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"✦";color:var(--gold);font-size:9px;opacity:.9;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--blue);}
.crumb .current{color:var(--head);font-weight:600;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-head{padding:16px 0 32px;border-bottom:1px solid var(--line);}
.article-head h1{
  font-size:38px;line-height:1.3;font-weight:700;color:var(--head);
  max-width:840px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;
  font-size:13px;color:var(--muted);
}
.meta-row .dot{color:var(--gold);font-size:9px;}
.meta-cat{
  background:var(--mist);color:var(--blue);border-radius:var(--r-pill);
  font-size:12px;font-weight:500;letter-spacing:.02em;padding:4px 12px;
}

/* ============ 两栏布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;
  align-items:start;padding:40px 0 72px;
}
.post-col{min-width:0;}
.side-col{min-width:0;position:sticky;top:24px;}

/* ============ 正文排版 ============ */
.post-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  padding:40px 44px;box-shadow:var(--sh-1);
  font-size:16px;line-height:1.85;color:var(--ink);
  overflow-wrap:break-word;word-break:break-word;
}
.post-body > *:first-child{margin-top:0;}
.post-body > *:last-child{margin-bottom:0;}
.post-body p{margin:0 0 1.4em;}
.post-body > p:first-of-type{font-size:17px;font-weight:500;color:#2B3850;}
.post-body h2{
  position:relative;font-size:24px;font-weight:700;line-height:1.4;color:var(--head);
  margin:48px 0 16px;padding-left:14px;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:2px;background:var(--blue);
}
.post-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--head);margin:32px 0 12px;}
.post-body h4{font-size:17px;font-weight:600;line-height:1.6;color:var(--head);margin:24px 0 10px;}
.post-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--mist-deep);
  border-left:4px solid var(--blue);border-radius:0 var(--r-img) var(--r-img) 0;
  color:#3A4863;font-size:15.5px;
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body ul,.post-body ol{margin:0 0 1.4em;padding-left:0;}
.post-body ul{list-style:none;}
.post-body ul li{position:relative;padding-left:22px;margin-bottom:8px;}
.post-body ul li::before{
  content:"✦";position:absolute;left:2px;top:0;color:var(--gold);font-size:12px;line-height:1.9;
}
.post-body ol{list-style:none;counter-reset:pb-ol;}
.post-body ol li{position:relative;padding-left:30px;margin-bottom:8px;counter-increment:pb-ol;}
.post-body ol li::before{
  content:counter(pb-ol) ".";position:absolute;left:0;top:0;color:var(--blue);
  font-weight:700;font-size:15px;
}
.post-body a{color:var(--blue);text-decoration:underline;text-underline-offset:4px;}
.post-body a:hover{color:var(--blue-dark);}
.post-body img{margin:24px auto;border-radius:var(--r-img);height:auto;}
.post-body figure{margin:24px 0;}
.post-body figcaption,.post-body .caption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.post-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.post-body table thead th{
  background:var(--mist);color:var(--head);font-weight:600;font-size:14px;
  padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);
}
.post-body table td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink);}
.post-body table tr:last-child td{border-bottom:0;}
.post-body code{
  background:#F1F4F9;color:#25406B;border-radius:6px;padding:2px 6px;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:14px;
}
.post-body pre{
  background:#F1F4F9;border-radius:var(--r-img);padding:16px 18px;overflow-x:auto;
  margin:24px 0;font-size:14px;line-height:1.7;
}
.post-body pre code{background:transparent;padding:0;}
.post-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

/* ============ 空态 ============ */
.empty-state{
  background:var(--surface);border:1px dashed #C9D8F2;border-radius:var(--r-block);
  padding:48px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-mark{font-size:26px;color:var(--gold);}
.empty-state h2{font-size:22px;font-weight:700;margin:12px 0 8px;}
.empty-state p{color:var(--muted);margin:0 0 24px;font-size:15px;}

/* ============ 标签行 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;
  padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;background:var(--mist);color:var(--blue);
  border-radius:var(--r-pill);font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:6px 14px;transition:background-color var(--ease),color var(--ease);
}
.tag:hover{background:var(--blue);color:#fff;text-decoration:none;}

/* ============ 上/下一篇 ============ */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px;}
.pager-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pager-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C9D8F2;text-decoration:none;}
.pager-card .pager-label{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px;}
.pager-card .pager-label::before{content:"✦";color:var(--gold);font-size:10px;}
.pager-card h3{
  font-size:16px;font-weight:600;line-height:1.6;color:var(--head);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager-card:hover h3{color:var(--blue);}
.pager-card.is-right{text-align:right;}
.pager-card.is-right .pager-label{justify-content:flex-end;}

/* ============ 相关推荐 ============ */
.related{margin-top:56px;}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px;}
.related-head h2{font-size:22px;font-weight:700;}
.related-head a{font-size:14px;color:var(--blue);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card-item{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.card-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none;}
.card-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--mist);border-radius:0;}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease);}
.card-item:hover .card-thumb img{transform:scale(1.02);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--head);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:14px;color:var(--muted);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.card-foot .more{color:var(--blue);font-weight:500;}
.back-row{margin-top:32px;}

/* ============ 侧栏 ============ */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card+.side-card{margin-top:24px;}
.side-card h3{font-size:15px;font-weight:600;color:var(--head);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"✦";color:var(--gold);font-size:12px;}
.toc-list{list-style:none;counter-reset:toc;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:8px 10px 8px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease);
}
.toc-list a:hover{color:var(--blue);background:var(--mist);text-decoration:none;}
.toc-list a.is-current{color:var(--blue);border-left-color:var(--blue);background:var(--mist);font-weight:600;}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.75;}
.hot-list{list-style:none;}
.hot-list li+li{border-top:1px solid var(--line);}
.hot-list a{display:block;padding:12px 0;font-size:14px;line-height:1.6;color:var(--ink);}
.hot-list a:hover{color:var(--blue);text-decoration:none;}
.side-cta{
  background:linear-gradient(180deg,#F4F8FE 0%,#EEF3FC 100%);
  border:1px solid var(--line);
}
.side-cta p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 16px;}
.side-cta .btn{width:100%;display:block;text-align:center;}

/* ============ 页脚 ============ */
.footer{background:var(--indigo);color:rgba(255,255,255,.72);margin-top:auto;}
.footer .inner{width:100%;max-width:1120px;margin:0 auto;padding:64px 32px 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer .logo-text strong{color:#fff;}
.footer .logo-text em{color:rgba(255,255,255,.62);}
.footer p{font-size:14px;line-height:1.85;margin:0 0 16px;color:rgba(255,255,255,.72);}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer ul{list-style:none;}
.footer ul li{margin-bottom:10px;}
.footer ul a{font-size:14px;color:rgba(255,255,255,.72);}
.footer ul a:hover{color:#fff;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{
  font-size:12px;letter-spacing:.02em;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sidebar:200px;}
  .article-layout{grid-template-columns:1fr;gap:32px;}
  .side-col{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .side-card+.side-card{margin-top:0;}
  .article-head h1{font-size:32px;}
}
@media (max-width:991.98px){
  :root{--sidebar:72px;}
  .shell-brand{justify-content:center;padding:0;}
  .shell-brand .logo-text,.nav-label,.nav-txt{display:none;}
  .nav-item{justify-content:center;padding:0;gap:0;}
  .nav-item.is-active::before{top:6px;bottom:6px;}
  .shell-cta{margin:auto 12px 0;}
  .shell-cta .btn-gold span{display:none;}
  .shell-cta .btn-gold::before{content:"✦";font-size:16px;}
  .side-col{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .post-body{padding:32px 28px;}
}
@media (max-width:767.98px){
  .shell{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:56px;}
  .wrap{padding:0 16px;padding-left:16px;}
  .article-head h1{font-size:26px;}
  .crumb .current{max-width:160px;}
  .post-body{padding:24px 20px;border-radius:var(--r-card);}
  .post-body h2{font-size:22px;margin-top:40px;}
  .post-body h3{font-size:18px;}
  .pager{grid-template-columns:1fr;gap:16px;}
  .pager-card.is-right{text-align:left;}
  .pager-card.is-right .pager-label{justify-content:flex-start;}
  .related-grid{grid-template-columns:1fr;}
  .footer .inner{padding:48px 16px 0;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn-primary,.btn-ghost{width:100%;display:block;text-align:center;}
}
@media (max-width:575.98px){
  .meta-row{gap:8px;font-size:12px;}
  .related-head{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-indigo:#16264D;
  --c-blue:#2E63C8;
  --c-blue-dark:#2554AE;
  --c-mist:#EEF3FC;
  --c-line:#DCE5F5;
  --c-gold:#E9A93B;
  --c-bg:#F7F9FD;
  --c-ink:#33415C;
  --c-title:#16202E;
  --c-muted:#6B7A93;
  --c-white:#FFFFFF;
  --c-success:#2F9E6B;
  --c-warn:#D9534F;

  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --r-block:20px;

  --sh-1:0 1px 2px rgba(16,28,58,.06);
  --sh-2:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-3:0 18px 40px -16px rgba(16,28,58,.20);

  --shell:236px;
  --ease:170ms cubic-bezier(.4,0,.2,1);
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  --bs-primary:#2E63C8;
  --bs-primary-rgb:46,99,200;
  --bs-body-color:#33415C;
  --bs-body-bg:#F7F9FD;
  --bs-border-color:#DCE5F5;
  --bs-border-radius:10px;
  --bs-link-color:#16264D;
  --bs-link-hover-color:#2E63C8;
  --bs-font-sans-serif: var(--font);
  --bs-body-font-family: var(--font);
  --bs-emphasis-color:#16202E;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{
  color:var(--c-indigo);
  text-decoration:none;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
a:hover{color:var(--c-blue);}
p a{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--c-blue);outline-offset:2px;border-radius:6px;}

h1,h2,h3,h4{color:var(--c-title);margin:0;font-weight:700;}
h1{font-size:38px;line-height:1.3;letter-spacing:-.005em;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:17px;line-height:1.6;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}

/* ---------- 侧栏导航 ---------- */
.shell-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--shell);
  background:var(--c-indigo);
  color:rgba(255,255,255,.72);
  display:flex;
  flex-direction:column;
  z-index:40;
}
.shell-brand{
  height:72px;
  flex:0 0 72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.logo-mark{
  color:var(--c-gold);
  font-size:16px;
  line-height:1;
  flex:0 0 auto;
}
.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.25;
  color:#fff;
}
.logo-text strong{font-size:15px;font-weight:700;letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.02em;}

.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:20px 0 12px;}
.nav-label{
  margin:0 0 8px;
  padding:0 20px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  color:rgba(255,255,255,.45);
}
.nav-list{list-style:none;margin:0 0 20px;padding:0;}
.nav-item{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 20px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  position:relative;
  transition:background-color var(--ease),color var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{
  background:rgba(255,255,255,.08);
  color:#fff;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  background:var(--c-gold);
  border-radius:0 3px 3px 0;
}
.nav-ico{font-size:12px;color:var(--c-gold);flex:0 0 auto;}
.nav-txt{white-space:nowrap;}

.nav-cta{padding:0 20px 24px;flex:0 0 auto;}
.nav-cta a{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 16px;
  background:var(--c-gold);
  color:var(--c-indigo);
  font-weight:600;
  font-size:15px;
  border-radius:var(--r-btn);
  transition:background-color var(--ease),transform var(--ease);
}
.nav-cta a:hover{background:#F0B css;background:#F0B24E;color:var(--c-indigo);transform:translateY(-1px);}

/* ---------- 顶部栏与抽屉（移动端） ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:50;
}
.brand-mini{display:flex;align-items:center;gap:8px;color:var(--c-indigo);}
.brand-mini .logo-text strong{color:var(--c-indigo);}
.brand-mini .logo-text em{color:var(--c-muted);}
.hamburger{
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
}
.hamburger span{display:block;width:18px;height:1.5px;background:var(--c-indigo);border-radius:2px;}
.mask{
  position:fixed;
  inset:0;
  background:rgba(16,28,58,.5);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
  z-index:55;
}
.mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;left:0;bottom:0;
  width:80%;
  max-width:320px;
  background:var(--c-indigo);
  color:rgba(255,255,255,.72);
  transform:translateX(-100%);
  transition:transform 200ms cubic-bezier(.4,0,.2,1);
  z-index:60;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer .nav-item{padding-left:20px;}

/* ---------- 主区域 ---------- */
.page{
  margin-left:var(--shell);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.wrap{
  width:100%;
  max-width:1120px;
  margin:0 auto;
  padding:0 24px;
}
.sec{padding:88px 0 0;}
.sec:last-of-type{padding-bottom:88px;}
.sec-narrow{max-width:840px;margin:0 auto;}

/* ---------- 面包屑 ---------- */
.crumb{padding:24px 0 16px;font-size:13px;color:var(--c-muted);}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"✦";font-size:9px;color:var(--c-line);}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-blue);}
.crumb [aria-current="page"]{color:var(--c-title);font-weight:600;}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  box-shadow:var(--sh-1);
  overflow:hidden;
  padding:40px;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(22,38,77,.06) 1px, transparent 1px);
  background-size:18px 18px;
  pointer-events:none;
}
.hero > *{position:relative;z-index:1;}
.hero h1{margin-bottom:16px;}
.hero-lead{font-size:17px;line-height:1.9;color:var(--c-ink);}
.hero-figure{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/10;
  box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

.chip-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:10px 18px;
  font-size:14px;
  font-weight:500;
  color:var(--c-indigo);
  background:var(--c-mist);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{background:var(--c-blue);color:#fff;border-color:var(--c-blue);}
.chip .nav-ico{font-size:11px;}

/* ---------- 板块标题 ---------- */
.sec-head{margin-bottom:32px;max-width:760px;}
.sec-head h2{margin-bottom:12px;}
.sec-head p{color:var(--c-muted);font-size:15.5px;}
.eq-line{
  height:1px;
  border:0;
  margin:0 0 32px;
  background:linear-gradient(90deg,transparent,var(--c-line) 18%,var(--c-line) 82%,transparent);
}

/* ---------- Bento 分组卡 ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  display:flex;
  flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.card h3{margin-bottom:10px;}
.card p{font-size:14.5px;line-height:1.85;color:var(--c-ink);margin-bottom:0;}
.card-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);}
.card-link{font-size:14px;font-weight:600;color:var(--c-blue);display:inline-flex;gap:6px;align-items:center;}
.card-link:hover{color:var(--c-blue-dark);}
.sp-4{grid-column:span 4;}
.sp-6{grid-column:span 6;}
.sp-8{grid-column:span 8;}
.sp-12{grid-column:span 12;}
.card-ico{
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-gold);
  font-size:15px;
  margin-bottom:16px;
}
.card-media{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/10;
  margin-bottom:20px;
  border:1px solid var(--c-line);
}
.card-media img{width:100%;height:100%;object-fit:cover;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  color:var(--c-blue);
  background:var(--c-mist);
  border-radius:var(--r-pill);
  margin-bottom:12px;
}

/* ---------- 清单 ---------- */
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  font-size:15px;
  line-height:1.8;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"✦";
  position:absolute;
  left:0;top:2px;
  font-size:11px;
  color:var(--c-gold);
}

/* ---------- 数据表 ---------- */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
table.data-table{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.data-table caption{
  text-align:left;
  padding:20px 24px 4px;
  font-size:13px;
  color:var(--c-muted);
}
table.data-table th,
table.data-table td{
  padding:0 24px;
  height:52px;
  vertical-align:middle;
  border-bottom:1px solid var(--c-line);
  text-align:left;
}
table.data-table thead th{
  background:var(--c-mist);
  color:var(--c-indigo);
  font-weight:600;
  font-size:13.5px;
  letter-spacing:.01em;
  white-space:nowrap;
}
table.data-table tbody tr:last-child th,
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table tbody th{font-weight:600;color:var(--c-title);white-space:nowrap;}
.pill-state{
  display:inline-flex;
  align-items:center;
  padding:2px 12px;
  font-size:12px;
  font-weight:500;
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.pill-on{background:rgba(47,158,107,.10);color:var(--c-success);}
.pill-off{background:var(--c-mist);color:var(--c-muted);}
.pill-adm{background:rgba(233,169,59,.14);color:#9A6A11;}

/* ---------- 数据条 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:24px;
}
.stat{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:24px;
}
.stat strong{
  display:block;
  font-size:30px;
  line-height:1.2;
  color:var(--c-indigo);
  font-weight:700;
  letter-spacing:-.005em;
}
.stat strong span{font-size:14px;font-weight:600;color:var(--c-muted);margin-left:4px;}
.stat p{margin:8px 0 0;font-size:14px;color:var(--c-muted);}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-color:var(--c-line);}
.accordion-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card)!important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:18px;
  font-weight:600;
  color:var(--c-title);
  background:#fff;
  padding:20px 24px;
  min-height:44px;
  box-shadow:none!important;
  transition:background-color var(--ease),color var(--ease);
}
.accordion-button:not(.collapsed){color:var(--c-blue);background:#fff;}
.accordion-button::after{
  content:"✦";
  background-image:none!important;
  font-size:13px;
  color:var(--c-gold);
  width:auto;height:auto;
  transform:rotate(0deg);
  transition:transform var(--ease);
  line-height:1;
}
.accordion-button:not(.collapsed)::after{transform:rotate(90deg);}
.accordion-body{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink);
  border-top:0;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--c-mist);
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  padding:56px 40px;
  text-align:center;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-40px;top:-40px;
  width:280px;height:280px;
  background-image:radial-gradient(rgba(46,99,200,.08) 1px, transparent 1px);
  background-size:16px 16px;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{margin-bottom:12px;}
.cta-band p{max-width:640px;margin:0 auto 28px;color:var(--c-muted);font-size:15.5px;}
.btn-row{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;}

.btn-main,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-main{background:var(--c-blue);color:#fff;border-color:var(--c-blue);}
.btn-main:hover{background:var(--c-blue-dark);border-color:var(--c-blue-dark);color:#fff;transform:translateY(-1px);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-indigo);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-mist);color:var(--c-indigo);border-color:var(--c-blue);}

/* ---------- 相关分类 ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rel-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--c-line);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.02);}
.rel-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{font-size:18px;margin-bottom:10px;}
.rel-body p{font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.rel-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-muted);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.rel-foot a{color:var(--c-blue);font-weight:600;}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:88px;
  background:var(--c-indigo);
  color:rgba(255,255,255,.72);
  padding:64px 0 24px;
}
.footer .inner{
  width:100%;
  max-width:1120px;
  margin:0 auto;
  padding:0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-grid h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-grid p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-grid ul{list-style:none;margin:0;padding:0;}
.footer-grid li{margin-bottom:10px;}
.footer-grid a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-grid a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.brand-row .logo-text strong{color:#fff;}
.brand-row .logo-text em{color:rgba(255,255,255,.62);}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags span{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);
}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--shell:200px;}
}
@media (max-width:991.98px){
  :root{--shell:72px;}
  .shell-brand{justify-content:center;padding:0;gap:0;}
  .shell-brand .logo-text{display:none;}
  .nav-scroll{padding:16px 0 8px;}
  .nav-label{display:none;}
  .nav-item{justify-content:center;padding:0;position:relative;}
  .nav-txt{display:none;}
  .nav-item::after{
    content:attr(data-tip);
    position:absolute;
    left:calc(100% + 10px);
    top:50%;
    transform:translateY(-50%) translateX(-4px);
    background:var(--c-indigo);
    color:#fff;
    font-size:13px;
    padding:6px 12px;
    border-radius:8px;
    white-space:nowrap;
    opacity:0;
    visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    box-shadow:var(--sh-2);
    z-index:5;
  }
  .nav-item:hover::after,
  .nav-item:focus-visible::after{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0);}
  .nav-cta{padding:0 8px 16px;}
  .nav-cta a{padding:12px 0;font-size:13px;}
  .nav-cta .nav-txt{display:none;}
  .hero{grid-template-columns:1fr;gap:32px;padding:32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767.98px){
  :root{--shell:0px;}
  .shell-nav{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-top:56px;}
  .wrap{padding:0 16px;}
  .crumb{padding:16px 0 12px;}
  .hero{padding:24px;border-radius:var(--r-card);}
  h1{font-size:26px;font-weight:600;}
  h2{font-size:22px;font-weight:600;}
  .hero-lead{font-size:15.5px;}
  .sec{padding:56px 0 0;}
  .sec:last-of-type{padding-bottom:56px;}
  .bento{gap:16px;}
  .sp-4,.sp-6,.sp-8{grid-column:span 12;}
  .card{padding:20px;}
  .stat-grid{grid-template-columns:1fr;gap:16px;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
  .cta-band{padding:40px 24px;border-radius:var(--r-card);}
  .btn-row{flex-direction:column;}
  .btn-main,.btn-ghost{width:100%;}
  .accordion-button{font-size:16px;padding:18px 20px;}
  .accordion-body{padding:0 20px 18px;}
  .footer{margin-top:56px;padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  table.data-table th,table.data-table td{padding:0 16px;}
  table.data-table caption{padding:16px 16px 4px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;scroll-behavior:auto!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#16264D;
  --blue:#2E63C8;
  --blue-deep:#24509f;
  --mist:#EEF3FC;
  --line:#DCE5F5;
  --gold:#E9A93B;
  --bg:#F7F9FD;
  --card:#FFFFFF;
  --title:#16202E;
  --text:#33415C;
  --muted:#6B7A93;
  --ok:#2F9E6B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-wrap:20px;
  --sh-1:0 1px 2px rgba(16,28,58,.06);
  --sh-2:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-3:0 18px 40px -16px rgba(16,28,58,.20);
  --nav-w:236px;
  --bs-primary:#2E63C8;
  --bs-body-color:#33415C;
  --bs-body-bg:#F7F9FD;
  --bs-border-color:#DCE5F5;
  --bs-link-color:#16264D;
  --bs-link-hover-color:#2E63C8;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;line-height:1.35}
h1{font-size:38px;line-height:1.3}
h2{font-size:28px}
h3{font-size:20px;font-weight:600;line-height:1.5}
h4{font-size:17px;font-weight:600;line-height:1.6}
p{margin:0 0 16px}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--mist);color:var(--ink)}

/* 布局 */
.main{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.container-main{max-width:1120px;margin:0 auto;padding:0 32px;width:100%}
.section{margin-top:88px}
.section:first-child{margin-top:0}
.narrow{max-width:840px;margin-left:auto;margin-right:auto}

/* 左侧导航 */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--ink);z-index:1045;
  display:flex;flex-direction:column;
  overflow-y:auto;overflow-x:hidden;
  transition:transform .2s ease;
}
.side-brand{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid rgba(255,255,255,.10);
}
.logo-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(233,169,59,.14);color:var(--gold);font-size:14px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{color:#fff;font-size:15px;font-weight:700;letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.04em}
.shell-nav{flex:1 1 auto;padding:8px 0 16px}
.nav-label{
  font-size:12px;font-weight:500;letter-spacing:.02em;
  color:rgba(255,255,255,.45);padding:16px 20px 8px;margin:0;
}
.nav-list{display:block}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding-left:20px;font-size:15px;
  color:rgba(255,255,255,.72);white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gold);
}
.nav-ico{color:var(--gold);font-size:12px;flex:0 0 12px}
.side-cta{padding:16px 20px 24px;border-top:1px solid rgba(255,255,255,.10)}
.side-cta .btn{width:100%;text-align:center}

/* 移动顶栏与遮罩 */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:1043;box-shadow:var(--sh-1);
}
.mobile-brand{display:flex;align-items:center;gap:8px;text-decoration:none}
.mobile-brand:hover{text-decoration:none}
.menu-btn{
  width:44px;height:44px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
  background:transparent;border:0;cursor:pointer;padding:0;
}
.menu-btn span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}
.scrim{
  position:fixed;inset:0;background:rgba(16,28,58,.5);z-index:1044;
  opacity:0;visibility:hidden;transition:opacity .2s ease;
}
.scrim.is-on{opacity:1;visibility:visible}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;
  padding:12px 24px;min-height:44px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:none}
.btn-star{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-star:hover{background:var(--blue-deep);border-color:var(--blue-deep);color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--mist);color:var(--ink);border-color:#c9d8f0}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-gold:hover{background:#dfa033;border-color:#dfa033;color:var(--ink)}

/* 面包屑 */
.breadcrumb-bar{margin:24px 0 16px}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px}
.breadcrumb-bar li+li::before{content:"✦";font-size:9px;color:var(--gold)}
.breadcrumb-bar a{color:var(--muted)}
.breadcrumb-bar a:hover{color:var(--blue)}
.breadcrumb-bar [aria-current="page"]{color:var(--title);font-weight:600}

/* Hero */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-wrap);
  padding:64px 48px;box-shadow:var(--sh-2);
  background-image:linear-gradient(118deg,rgba(22,38,77,.92) 8%,rgba(22,38,77,.70) 88%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(233,169,59,.55);color:var(--gold);
  font-size:12px;font-weight:500;letter-spacing:.04em;margin-bottom:20px;
}
.hero h1{color:#fff;max-width:860px}
.hero-sub{color:rgba(255,255,255,.78);max-width:760px;margin-top:16px;font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px}
.trust-row li{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);font-size:14px}
.trust-row li span{color:var(--gold);font-size:11px}

/* 导语 */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start}
.intro-text p{font-size:16px;color:var(--text)}
.intro-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.intro-card h3{margin-bottom:16px}
.intro-card .mini-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.intro-card .mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-idx{
  flex:0 0 26px;height:26px;border-radius:8px;background:var(--mist);
  color:var(--blue);font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;
}
.mini-item p{margin:0;font-size:14px;color:var(--muted)}
.mini-item strong{display:block;color:var(--title);font-size:15px;margin-bottom:2px}

/* 锚点 chips */
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--title);font-size:14px;font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--mist);color:var(--blue);border-color:#c9d8f0;text-decoration:none}

/* 区块标题 */
.section-head{max-width:840px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.04em;color:var(--blue);
  background:var(--mist);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-head p{color:var(--muted);margin-top:12px;margin-bottom:0}

/* 时间轴 */
.timeline{position:relative;padding-left:56px}
.timeline::before{
  content:"";position:absolute;left:19px;top:6px;bottom:6px;width:1px;background:var(--line);
}
.tl-item{position:relative;margin-bottom:32px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:-56px;top:4px;width:38px;height:38px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  color:var(--blue);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#c9d8f0}
.tl-card h3{margin-bottom:12px}
.tl-card>p{color:var(--muted);font-size:15px;margin-bottom:16px}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:8px;
  font-size:15px;color:var(--muted);line-height:1.75;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{content:"✦";position:absolute;left:0;top:1px;color:var(--gold);font-size:11px}

/* 图文模块 */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media{
  border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;
  box-shadow:var(--sh-2);border:1px solid var(--line);background:var(--mist);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease}
.split-media:hover img{transform:scale(1.02)}
.split-body h2{margin-bottom:16px}
.split-body p{color:var(--muted)}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--mist);color:var(--blue);font-size:12px;font-weight:500;letter-spacing:.02em;
  transition:background-color .18s ease,color .18s ease;
}
.tag:hover{background:var(--blue);color:#fff}

/* 数据条 */
.stat-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-wrap);
  padding:32px;box-shadow:var(--sh-1);
}
.stat strong{display:block;color:var(--ink);font-size:32px;font-weight:700;line-height:1.2}
.stat strong i{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.stat span{display:block;font-size:14px;font-weight:600;color:var(--title);margin:8px 0 4px}
.stat p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}

/* FAQ */
.faq-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-wrap);padding:8px 32px;box-shadow:var(--sh-1)}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-item:last-child{border-bottom:0}
.accordion-button{
  background:transparent;color:var(--title);font-size:18px;font-weight:600;
  padding:22px 0;box-shadow:none!important;line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--blue);background:transparent}
.accordion-button::after{
  background-image:none;content:"✦";font-size:13px;color:var(--gold);
  width:auto;height:auto;display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform .18s ease;margin-left:16px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-body{padding:0 0 22px;color:var(--muted);font-size:15px;line-height:1.85}

/* CTA */
.cta-band{margin-top:88px}
.cta-inner{
  position:relative;overflow:hidden;text-align:center;
  background:var(--mist);border:1px solid var(--line);border-radius:var(--r-wrap);
  padding:56px 40px;
}
.cta-inner::after{
  content:"";position:absolute;right:-40px;top:-40px;width:240px;height:240px;
  background-image:radial-gradient(rgba(46,99,200,.06) 1px,transparent 1px);
  background-size:14px 14px;pointer-events:none;
}
.cta-inner h2{margin-bottom:12px}
.cta-inner p{color:var(--muted);max-width:640px;margin:0 auto 28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;position:relative;z-index:1}

/* 相关分类 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);color:var(--ink);
  transition:transform .18s ease,box-shadow .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none;color:var(--ink)}
.rel-media{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;margin-bottom:16px;background:var(--mist)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease}
.rel-card:hover .rel-media img{transform:scale(1.02)}
.badge-soft{
  align-self:flex-start;background:var(--mist);color:var(--blue);
  font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.rel-card h3{font-size:18px;margin-bottom:8px}
.rel-card p{font-size:14px;color:var(--muted);margin:0 0 16px;line-height:1.75}
.rel-more{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--blue);
}

/* 页脚 */
.footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 0}
.footer .inner{max-width:1120px;margin:0 auto;padding:0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.footer ul li{margin-bottom:10px}
.footer a{color:rgba(255,255,255,.72);font-size:14px}
.footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer .brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-tags span{
  font-size:12px;padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);
}
.footer-bottom{
  margin-top:48px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* 响应式 */
@media (max-width:1199.98px) and (min-width:992px){
  :root{--nav-w:200px}
}
@media (max-width:991.98px) and (min-width:768px){
  :root{--nav-w:72px}
  .app-side{overflow:visible}
  .side-brand{justify-content:center;padding:0}
  .logo-text{display:none}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding-left:0}
  .nav-txt{display:none}
  .nav-item:hover::after{
    content:attr(data-tip);position:absolute;left:80px;top:50%;
    transform:translateY(-50%);background:var(--ink);color:#fff;
    font-size:13px;padding:6px 12px;border-radius:8px;white-space:nowrap;
    box-shadow:var(--sh-2);z-index:20;
  }
  .side-cta{padding:16px 8px}
  .side-cta .btn{padding:12px 8px;font-size:0}
  .side-cta .btn::before{content:"✦";font-size:16px}
}
@media (max-width:991.98px){
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:32px}
  .split.alt .split-media{order:-1}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .rel-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .app-side{width:80%;max-width:320px;transform:translateX(-100%);box-shadow:var(--sh-3)}
  .app-side.is-open{transform:none}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:56px}
  h1{font-size:26px;font-weight:600}
  h2{font-size:22px}
  h3{font-size:18px}
  .container-main{padding:0 20px}
  .section{margin-top:56px}
  .hero{padding:40px 24px;border-radius:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:12px 20px}
  .breadcrumb-bar{margin:16px 0 12px}
  .timeline{padding-left:44px}
  .timeline::before{left:15px}
  .tl-dot{left:-44px;width:30px;height:30px;font-size:12px}
  .tl-card{padding:20px}
  .stat-row{padding:20px;gap:20px}
  .faq-wrap{padding:4px 20px}
  .accordion-button{font-size:16px}
  .cta-band{margin-top:56px}
  .cta-inner{padding:40px 24px}
  .cta-actions .btn{width:100%}
  .footer{margin-top:56px;padding-top:48px}
  .footer .inner{padding:0 20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --indigo:#16264D;
  --blue:#2E63C8;
  --blue-dark:#24509F;
  --mist:#EEF3FC;
  --line:#DCE5F5;
  --gold:#E9A93B;
  --page:#F7F9FD;
  --card:#FFFFFF;
  --ink:#33415C;
  --title:#16202E;
  --muted:#6B7A93;
  --ok:#2F9E6B;
  --warn:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(16,28,58,.06);
  --sh-2:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-3:0 18px 40px -16px rgba(16,28,58,.20);
  --sp1:4px;--sp2:8px;--sp3:12px;--sp4:16px;--sp5:24px;--sp6:32px;--sp7:48px;--sp8:64px;--sp9:88px;
  --bs-primary:#2E63C8;
  --bs-primary-rgb:46,99,200;
  --bs-body-color:#33415C;
  --bs-body-bg:#F7F9FD;
  --bs-border-color:#DCE5F5;
  --bs-link-color:#16264D;
  --bs-link-hover-color:#2E63C8;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink);background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--indigo);text-decoration:none;transition:color 180ms ease,background-color 180ms ease,border-color 180ms ease;}
a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--title);margin:0;font-weight:700;letter-spacing:0;}
h1{font-size:38px;line-height:1.3;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:17px;line-height:1.6;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}

/* ---------- Bootstrap 外观覆盖 ---------- */
.btn{
  border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 24px;
  border:1px solid transparent;transition:all 180ms ease;line-height:1.5;
}
.btn-primary{
  background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:none;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--blue-dark);border-color:var(--blue-dark);color:#fff;transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(0);background:var(--blue-dark);border-color:var(--blue-dark);}
.btn-ghost{
  background:#fff;border-color:var(--line);color:var(--indigo);
}
.btn-ghost:hover{background:var(--mist);border-color:#C7D7F2;color:var(--indigo);}
.btn-outline-primary{
  background:#fff;border-color:var(--line);color:var(--indigo);
}
.btn-outline-primary:hover{background:var(--mist);border-color:#C7D7F2;color:var(--indigo);}
.card{border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);background:var(--card);}
.form-control,.form-select{
  height:44px;border-radius:10px;border:1px solid var(--line);color:var(--ink);font-size:15px;
}
.form-control:focus,.form-select:focus{
  border-color:var(--blue);box-shadow:0 0 0 4px rgba(46,99,200,.12);color:var(--ink);
}
.form-label{font-size:14px;font-weight:600;color:var(--title);margin-bottom:8px;}
.badge{border-radius:999px;font-weight:500;font-size:12px;letter-spacing:.02em;padding:5px 12px;}
.table{--bs-table-bg:transparent;border-color:var(--line);margin-bottom:0;}
.table>thead th{
  background:var(--mist);color:var(--title);font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line);padding:14px 16px;vertical-align:middle;
}
.table>tbody td{
  padding:14px 16px;font-size:15px;color:var(--ink);vertical-align:middle;border-color:var(--line);
}
.table>tbody tr:hover{background:#FAFCFF;}
.pagination{gap:8px;}
.page-link{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);color:var(--indigo);font-weight:600;
}
.page-item.active .page-link{background:var(--indigo);border-color:var(--indigo);color:#fff;}
.page-link:hover{background:var(--mist);color:var(--blue);}

/* ---------- 布局骨架 ---------- */
.shell-nav{
  position:fixed;top:0;left:0;bottom:0;width:236px;background:var(--indigo);
  display:flex;flex-direction:column;padding-bottom:24px;overflow-y:auto;z-index:40;
}
.shell-nav::-webkit-scrollbar{width:6px;}
.shell-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:6px;}
.brand{
  height:72px;flex:none;display:flex;align-items:center;gap:10px;padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.logo-mark{
  width:30px;height:30px;flex:none;display:flex;align-items:center;justify-content:center;
  border-radius:9px;background:rgba(233,169,59,.16);color:var(--gold);font-size:15px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;font-size:13px;}
.brand-text strong{color:#fff;font-size:14px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;color:rgba(255,255,255,.62);font-size:12px;letter-spacing:.06em;}
.nav-label{
  margin:0;padding:26px 20px 8px;font-size:12px;letter-spacing:.08em;
  color:rgba(255,255,255,.42);font-weight:500;
}
.nav-list{list-style:none;margin:0;padding:0 12px;display:grid;gap:4px;}
.nav-item{
  position:relative;height:44px;display:flex;align-items:center;gap:10px;
  padding-left:12px;padding-right:12px;border-radius:8px;
  color:rgba(255,255,255,.72);font-size:15px;text-decoration:none;
  transition:background-color 180ms ease,color 180ms ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;}
.nav-item.is-active{
  background:rgba(255,255,255,.08);color:#fff;
  box-shadow:inset 3px 0 0 var(--gold);
}
.nav-ico{color:var(--gold);font-size:13px;line-height:1;flex:none;}
.nav-item.is-active .nav-ico{color:var(--gold);}
.nav-cta{
  margin:auto 20px 0;height:46px;display:flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);background:var(--gold);color:#16264D;font-size:14px;font-weight:700;
  text-decoration:none;transition:background-color 180ms ease,transform 180ms ease;
}
.nav-cta:hover{background:#F0B551;color:#16264D;text-decoration:none;transform:translateY(-1px);}
.app-main{margin-left:236px;min-height:100vh;display:flex;flex-direction:column;}
.wrap{max-width:1120px;margin:0 auto;padding:0 32px;width:100%;}
.sec{padding:var(--sp9) 0;}
.sec-sm{padding:var(--sp7) 0;}
.sec-head{margin-bottom:var(--sp6);}
.sec-head p{color:var(--muted);max-width:780px;margin-top:12px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);z-index:50;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar-brand{display:flex;align-items:center;gap:8px;}
.topbar-brand .logo-mark{background:var(--mist);}
.topbar-text{display:flex;flex-direction:column;line-height:1.2;}
.topbar-text strong{color:var(--title);font-size:14px;font-weight:700;}
.topbar-text em{font-style:normal;color:var(--muted);font-size:11px;letter-spacing:.05em;}
.menu-btn{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--indigo);font-size:17px;display:flex;align-items:center;justify-content:center;
}
.menu-btn:hover{background:var(--mist);}
.scrim{
  position:fixed;inset:0;background:rgba(16,28,58,.5);opacity:0;visibility:hidden;
  transition:opacity 180ms ease,visibility 180ms ease;z-index:55;
}
.scrim.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:80%;max-width:320px;background:var(--indigo);
  display:flex;flex-direction:column;padding-bottom:24px;overflow-y:auto;z-index:60;
  transform:translateX(-100%);transition:transform 180ms ease;
}
.drawer.is-open{transform:translateX(0);}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;padding:32px 0 72px;
  background:
    radial-gradient(rgba(22,38,77,.06) 1px,transparent 1px) 0 0/18px 18px,
    linear-gradient(118deg,#EEF3FC 0%,#F7F9FD 58%,rgba(22,38,77,.08) 100%);
  border-bottom:1px solid var(--line);
}
.breadcrumb-bar{padding:8px 0 16px;}
.breadcrumb-bar ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px;}
.breadcrumb-bar li+li::before{content:"✦";color:var(--gold);font-size:10px;}
.breadcrumb-bar a{color:var(--muted);}
.breadcrumb-bar a:hover{color:var(--blue);}
.breadcrumb-bar li[aria-current] span{color:var(--title);font-weight:600;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;margin-top:12px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--mist);color:var(--blue);
  border-radius:999px;padding:6px 14px;font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:20px;
}
.hero h1{margin-bottom:20px;}
.hero .lead{font-size:17px;line-height:1.85;color:var(--ink);max-width:620px;}
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:9px 18px;font-size:14px;color:var(--indigo);box-shadow:var(--sh-1);
  transition:all 180ms ease;
}
.chip:hover{background:var(--mist);border-color:#C7D7F2;color:var(--blue);text-decoration:none;transform:translateY(-1px);}
.chip i{color:var(--gold);font-size:11px;}
.hero-media{margin:0;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.hero-media figcaption{margin-top:12px;font-size:13px;color:var(--muted);}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);
}
.stat{display:flex;flex-direction:column;gap:6px;padding-left:16px;border-left:2px solid var(--mist);}
.stat strong{font-size:30px;line-height:1.1;color:var(--indigo);font-weight:700;}
.stat strong em{font-style:normal;font-size:14px;font-weight:600;color:var(--muted);margin-left:4px;}
.stat span{font-size:14px;color:var(--muted);}

/* ---------- 图文交替 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:var(--sp8) 0;}
.feature-row+.feature-row{border-top:1px solid var(--line);}
.feature-row.is-reverse .feature-media{order:2;}
.feature-media{margin:0;}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.feature-copy h2{margin-bottom:16px;}
.feature-copy>p{color:var(--ink);}
.feature-copy .h-sub{font-size:15px;color:var(--muted);}
.check-list{list-style:none;display:grid;gap:14px;margin-top:24px;}
.check-list li{position:relative;padding-left:30px;font-size:15.5px;color:var(--ink);line-height:1.8;}
.check-list li::before{
  content:"✦";position:absolute;left:0;top:1px;color:var(--gold);font-size:14px;line-height:1.8;
}
.check-list li strong{color:var(--title);font-weight:600;}

/* ---------- 自检清单模块 ---------- */
.check-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--sh-1);
}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 32px;margin-top:24px;}
.check-grid li{position:relative;padding-left:30px;font-size:15.5px;color:var(--ink);}
.check-grid li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;color:var(--ok);font-size:13px;
}
.tip-line{
  margin-top:28px;padding:16px 20px;background:#F3F7FE;border-left:4px solid var(--blue);
  border-radius:0 12px 12px 0;font-size:14.5px;color:var(--ink);
}

/* ---------- FAQ ---------- */
.faq-narrow{max-width:840px;margin:0 auto;}
.faq-acc{margin-top:32px;border-top:1px solid var(--line);}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;color:var(--title);font-size:18px;font-weight:600;line-height:1.6;
  padding:22px 44px 22px 30px;box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--blue);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--blue);outline-offset:-2px;}
.faq-acc .accordion-button::after{
  content:"✦"!important;background-image:none!important;color:var(--gold);font-size:14px;
  width:auto;height:auto;transform:none;transition:transform 180ms ease;
  position:absolute;right:24px;top:50%;margin-top:-11px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(90deg);}
.faq-acc .accordion-body{padding:0 30px 24px;font-size:15.5px;color:var(--ink);line-height:1.85;max-width:760px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--mist);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:48px;display:flex;align-items:center;
  justify-content:space-between;gap:32px;box-shadow:var(--sh-1);
}
.cta-band::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:240px;height:200px;
  background:radial-gradient(rgba(22,38,77,.08) 1px,transparent 1px) 0 0/16px 16px;
  pointer-events:none;
}
.cta-band h2{font-size:26px;margin-bottom:12px;position:relative;z-index:1;}
.cta-band p{color:var(--ink);max-width:640px;position:relative;z-index:1;}
.cta-band .btn{position:relative;z-index:1;white-space:nowrap;}

/* ---------- 相关分类 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.link-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform 180ms ease,box-shadow 180ms ease;text-decoration:none;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none;}
.link-card .thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 180ms ease;}
.link-card:hover .thumb img{transform:scale(1.02);}
.link-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.link-card .badge{background:var(--mist);color:var(--blue);align-self:flex-start;}
.link-card h3{font-size:18px;color:var(--title);margin:0;}
.link-card p{font-size:14px;color:var(--muted);margin:0;}
.link-card .more{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--blue);
}

/* ---------- 页脚 ---------- */
.footer{margin-top:auto;background:var(--indigo);color:rgba(255,255,255,.72);}
.footer .inner{max-width:1120px;margin:0 auto;padding:64px 32px 32px;width:100%;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.brand-row .logo-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-row .logo-text strong{color:#fff;font-size:15px;font-weight:700;}
.brand-row .logo-text em{font-style:normal;color:rgba(255,255,255,.62);font-size:12px;letter-spacing:.06em;}
.footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer ul{list-style:none;display:grid;gap:10px;}
.footer ul a{color:rgba(255,255,255,.72);font-size:14px;}
.footer ul a:hover{color:#fff;text-decoration:none;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags span{
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:4px 12px;
  font-size:12px;color:rgba(255,255,255,.7);letter-spacing:.02em;
}
.footer-bottom{
  margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .shell-nav{width:200px;}
  .app-main{margin-left:200px;}
  h1{font-size:34px;}
  .hero-grid{gap:32px;}
  .feature-row{gap:32px;}
}
@media (max-width:991px){
  .shell-nav{width:72px;}
  .app-main{margin-left:72px;}
  .brand{justify-content:center;padding:0;}
  .brand-text{display:none;}
  .nav-txt{display:none;}
  .nav-label{text-align:center;padding:22px 0 8px;font-size:11px;}
  .nav-list{padding:0 10px;}
  .nav-item{justify-content:center;padding:0;height:46px;}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:74px;top:50%;transform:translateY(-50%);
    background:#16264D;color:#fff;font-size:13px;padding:6px 12px;border-radius:8px;
    white-space:nowrap;opacity:0;pointer-events:none;box-shadow:var(--sh-2);
    transition:opacity 160ms ease;z-index:70;
  }
  .nav-item:hover::after,.nav-item:focus-visible::after{opacity:1;}
  .nav-cta{margin:auto 12px 0;padding:0;}
  .nav-cta .nav-txt{display:none;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{order:-1;}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:24px 16px;}
  .feature-row{grid-template-columns:1fr;gap:24px;padding:48px 0;}
  .feature-row.is-reverse .feature-media{order:0;}
  .check-grid{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:repeat(2,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .shell-nav{display:none;}
  .topbar{display:flex;}
  .app-main{margin-left:0;padding-top:56px;}
  .wrap{padding:0 20px;}
  .sec{padding:56px 0;}
  .sec-sm{padding:32px 0;}
  .hero{padding:20px 0 48px;}
  h1{font-size:26px;line-height:1.35;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:15.5px;}
  .hero .lead{font-size:16px;}
  .btn{width:100%;padding:12px 20px;}
  .chip{font-size:13px;padding:8px 14px;}
  .stat-strip{padding:24px;grid-template-columns:1fr 1fr;}
  .stat strong{font-size:24px;}
  .check-panel{padding:24px;}
  .link-cards{grid-template-columns:1fr;}
  .faq-acc .accordion-button{font-size:16px;padding:18px 40px 18px 22px;}
  .faq-acc .accordion-body{padding:0 22px 20px;}
  .cta-band{padding:24px;}
  .footer .inner{padding:48px 20px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .stat-strip{grid-template-columns:1fr;}
  .hero-media img{border-radius:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --navy:#16264D;
  --navy-deep:#101C3A;
  --blue:#2E63C8;
  --blue-dark:#24509F;
  --mist:#EEF3FC;
  --line:#DCE5F5;
  --gold:#E9A93B;
  --ink:#16202E;
  --body:#33415C;
  --muted:#6B7A93;
  --bg:#F7F9FD;
  --white:#FFFFFF;
  --ok:#2F9E6B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:999px;
  --r-block:20px;
  --sh-weak:0 1px 2px rgba(16,28,58,.06);
  --sh-mid:0 8px 24px -8px rgba(16,28,58,.14);
  --sh-hover:0 18px 40px -16px rgba(16,28,58,.20);
  --bs-primary:#2E63C8;
  --bs-body-color:#33415C;
  --bs-body-bg:#F7F9FD;
  --bs-border-color:#DCE5F5;
  --bs-link-color:#16264D;
  --bs-link-hover-color:#2E63C8;
  --bs-border-radius:10px;
  --bs-border-radius-lg:16px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--navy);text-decoration:none;transition:color 180ms ease}
a:hover{color:var(--blue)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:236px;
  background:var(--navy);
  color:rgba(255,255,255,.72);
  display:flex;
  flex-direction:column;
  z-index:1040;
  transition:transform 180ms ease;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  height:72px;
  padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
  flex:0 0 auto;
}
.logo-mark{
  width:30px;height:30px;
  display:flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:rgba(233,169,59,.16);
  color:var(--gold);
  font-size:15px;
  flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{color:#fff;font-size:15px;font-weight:700}
.logo-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.02em}
.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:16px 0}
.nav-label{
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.42);
  padding:12px 20px 8px;
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 20px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:background 180ms ease,color 180ms ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:0 3px 3px 0;
  background:var(--gold);
}
.nav-ico{color:var(--gold);font-size:12px;flex:0 0 auto}
.nav-txt{white-space:nowrap}
.side-cta{padding:16px;flex:0 0 auto;border-top:1px solid rgba(255,255,255,.10)}
.btn-gold{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:44px;
  border-radius:var(--r-btn);
  background:var(--gold);
  color:var(--navy-deep);
  font-size:15px;
  font-weight:600;
  border:0;
  transition:transform 180ms ease,box-shadow 180ms ease,background 180ms ease;
}
.btn-gold:hover{background:#F0B44F;color:var(--navy-deep);transform:translateY(-1px);box-shadow:var(--sh-mid)}
.btn-gold:active{transform:translateY(0)}

/* ---------- 主区域 ---------- */
.shell-main{margin-left:236px;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:40px 40px 0;flex:1 1 auto}
.topbar{display:none}
.shell-mask{display:none}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:rgba(255,255,255,.72);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumb .sep{color:var(--gold);font-size:11px}
.crumb .current{color:#fff;font-weight:600}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-block);
  padding:48px 44px;
  color:#fff;
  background-image:
    linear-gradient(115deg,rgba(22,38,77,.94) 0%,rgba(22,38,77,.78) 52%,rgba(22,38,77,.46) 100%),
    url(/assets/images/backpic/back-3.png);
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-mid);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-badge);
  background:rgba(233,169,59,.18);
  border:1px solid rgba(233,169,59,.44);
  color:#F6D08A;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.page-hero h1{
  color:#fff;
  font-size:34px;
  line-height:1.35;
  font-weight:700;
  max-width:820px;
  margin:14px 0 16px;
}
.lede{
  max-width:760px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(255,255,255,.84);
}
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:40px;
  padding:8px 18px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.30);
  color:#fff;
  font-size:14px;
  transition:background 180ms ease,color 180ms ease,transform 180ms ease;
}
.chip:hover{background:#fff;color:var(--navy);transform:translateY(-1px)}
.chip .dot{color:var(--gold);font-size:10px}

/* ---------- 通用区块 ---------- */
.sec{margin-top:88px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.sec-head h2{
  font-size:26px;
  line-height:1.4;
  color:var(--ink);
  position:relative;
  padding-left:14px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:2px;background:var(--blue);
}
.sec-head p{font-size:14px;color:var(--muted);max-width:620px;margin-top:8px;padding-left:14px}
.sec-link{font-size:14px;color:var(--blue);font-weight:600;white-space:nowrap}
.sec-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:24px;
}
.stat{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-weak);
  padding:20px;
}
.stat .num{font-size:26px;font-weight:700;color:var(--navy);line-height:1.2}
.stat .num small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px}
.stat .lab{font-size:13.5px;color:var(--muted);margin-top:6px}

/* ---------- 表格 ---------- */
.table-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-weak);
  overflow:hidden;
}
.table-wrap{overflow-x:auto}
.table{
  --bs-table-bg:transparent;
  --bs-table-hover-bg:#F8FAFF;
  margin:0;
  color:var(--body);
  border-color:var(--line);
}
.table>thead>tr>th{
  background:var(--mist);
  color:var(--navy);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.02em;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  border-top:0;
  white-space:nowrap;
  vertical-align:middle;
}
.table>tbody>tr>td{
  padding:16px 18px;
  border-bottom:1px solid var(--line);
  border-top:0;
  vertical-align:middle;
  font-size:15px;
  line-height:1.7;
}
.table>tbody>tr:last-child>td{border-bottom:0}
.table-hover>tbody>tr:hover>*{background:#F8FAFF;color:inherit}
.code-cell{color:var(--navy);font-weight:600;font-size:14px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-badge);
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
}
.tag-ok{background:rgba(47,158,107,.12);color:var(--ok)}
.tag-do{background:var(--mist);color:var(--blue)}
.tag-hot{background:rgba(233,169,59,.16);color:#A9741B}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-weak);
  overflow:hidden;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-mid)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 180ms ease}
.card:hover .card-media img{transform:scale(1.02)}
.card-media .tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--blue)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-foot a{color:var(--blue);font-weight:600}
.card-foot a:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 排行 ---------- */
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank{
  display:flex;align-items:center;gap:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-weak);
  padding:16px 20px;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.rank:hover{transform:translateY(-2px);box-shadow:var(--sh-mid)}
.rank-no{
  width:30px;height:30px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--mist);
  color:var(--blue);
  font-size:13px;font-weight:700;
}
.rank:nth-child(1) .rank-no{background:rgba(233,169,59,.18);color:#A9741B}
.rank-main{flex:1 1 auto;min-width:0}
.rank-main h3{font-size:16px;font-weight:600;color:var(--ink)}
.rank-main p{font-size:13px;color:var(--muted);margin-top:2px}
.rank-bar{height:6px;border-radius:3px;background:var(--mist);margin-top:10px;overflow:hidden}
.rank-bar span{display:block;height:100%;border-radius:3px;background:var(--blue)}
.rank-val{font-size:15px;font-weight:700;color:var(--navy);flex:0 0 auto}

/* ---------- 图文模块 ---------- */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-mid)}
.split h3{font-size:22px;line-height:1.5;margin-bottom:14px}
.split p{font-size:15.5px;line-height:1.85;color:var(--body)}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--body)}
.check-list li::before{content:"✦";color:var(--gold);font-size:12px;line-height:1.9;flex:0 0 auto}

/* ---------- 迷你导航卡 ---------- */
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-weak);padding:24px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.mini:hover{transform:translateY(-2px);box-shadow:var(--sh-mid)}
.mini .m-ico{color:var(--gold);font-size:14px}
.mini h3{font-size:18px;font-weight:600}
.mini p{font-size:14px;color:var(--muted);line-height:1.75}
.mini a{font-size:14px;font-weight:600;color:var(--blue);margin-top:auto}

/* ---------- FAQ ---------- */
.faq-box{max-width:840px;margin:0 auto}
.accordion{
  --bs-accordion-border-color:transparent;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:#fff;
  --bs-accordion-active-color:var(--blue);
  --bs-accordion-btn-padding-y:20px;
  --bs-accordion-btn-padding-x:24px;
  --bs-accordion-body-padding-x:24px;
  --bs-accordion-body-padding-y:0;
}
.accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card)!important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-weak);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  font-size:18px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
  background:#fff;
  border:0;
  transition:color 180ms ease;
}
.accordion-button:not(.collapsed){color:var(--blue)}
.accordion-button::after{
  content:"✦";
  background-image:none;
  width:1.4rem;height:1.4rem;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;
  color:var(--gold);
  transition:transform 180ms ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(135deg)}
.accordion-body{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--body);
}

/* ---------- CTA ---------- */
.cta{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-block);
  background:var(--mist);
  padding:48px 44px;
  text-align:center;
}
.cta h2{font-size:26px;line-height:1.4;margin-bottom:12px}
.cta p{font-size:15.5px;color:var(--muted);max-width:640px;margin:0 auto}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:12px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background 180ms ease,color 180ms ease,transform 180ms ease,border-color 180ms ease;
}
.btn-primary{
  background:var(--blue);
  color:#fff;
  border-color:var(--blue);
}
.btn-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:#fff;
  color:var(--navy);
  border-color:var(--line);
}
.btn-ghost:hover{background:var(--mist);color:var(--navy);border-color:#C6D5EE;transform:translateY(-1px)}
.btn-block{width:100%}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:88px;
  background:var(--navy);
  color:rgba(255,255,255,.72);
  padding:64px 0 24px;
}
.footer .inner{max-width:1120px;margin:0 auto;padding:0 40px}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer .brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer .logo-mark{background:rgba(233,169,59,.18)}
.footer .logo-text strong{color:#fff}
.footer .logo-text em{color:rgba(255,255,255,.6)}
.footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:rgba(255,255,255,.72)}
.footer ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-tags span{
  font-size:12px;padding:4px 12px;border-radius:var(--r-badge);
  background:rgba(255,255,255,.10);color:rgba(255,255,255,.78);
}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.56);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .sidebar{width:200px}
  .shell-main{margin-left:200px}
  .page-hero h1{font-size:30px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px}
}
@media (max-width:991.98px){
  .sidebar{width:72px}
  .shell-main{margin-left:72px}
  .brand{padding:0;justify-content:center}
  .logo-text{display:none}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-txt{display:none}
  .nav-item.is-active::before{top:8px;bottom:8px}
  .nav-item::after{
    content:attr(data-tip);
    position:absolute;
    left:64px;
    top:50%;
    transform:translateY(-50%);
    background:var(--navy-deep);
    color:#fff;
    font-size:13px;
    line-height:1;
    padding:8px 12px;
    border-radius:8px;
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity 180ms ease;
    z-index:20;
    box-shadow:var(--sh-mid);
  }
  .nav-item:hover::after,.nav-item:focus-visible::after{opacity:1}
  .side-cta{padding:12px 8px}
  .btn-gold span.cta-txt{display:none}
  .btn-gold{padding:0}
  .wrap{padding:32px 24px 0}
  .footer .inner{padding:0 24px}
  .sec{margin-top:64px}
  .card-grid,.mini-grid{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:24px}
  .split.media-right .split-media{order:-1}
}
@media (max-width:767.98px){
  .topbar{
    display:flex;
    position:fixed;top:0;left:0;right:0;
    height:56px;
    align-items:center;justify-content:space-between;
    padding:0 16px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-weak);
    z-index:1045;
  }
  .topbar .brand-row{display:flex;align-items:center;gap:8px}
  .topbar .logo-mark{background:var(--mist);color:var(--blue)}
  .topbar .logo-text strong{color:var(--navy);font-size:14px;font-weight:700}
  .topbar .logo-text em{font-size:11px;color:var(--muted)}
  .nav-toggle{
    width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    background:var(--mist);
    border:1px solid var(--line);
    border-radius:var(--r-btn);
    color:var(--navy);
    font-size:16px;
    cursor:pointer;
  }
  .sidebar{
    width:80%;
    max-width:320px;
    transform:translateX(-100%);
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar .brand{justify-content:flex-start;padding:0 20px}
  .sidebar .logo-text{display:flex}
  .sidebar .nav-label{display:block}
  .sidebar .nav-item{justify-content:flex-start;padding:0 20px}
  .sidebar .nav-txt{display:inline}
  .sidebar .nav-item::after{display:none}
  .side-cta{padding:16px}
  .btn-gold span.cta-txt{display:inline}
  .shell-mask{
    display:block;
    position:fixed;inset:0;
    background:rgba(16,28,58,.5);
    opacity:0;visibility:hidden;
    transition:opacity 180ms ease,visibility 180ms ease;
    z-index:1035;
  }
  .shell-mask.is-open{opacity:1;visibility:visible}
  .shell-main{margin-left:0;padding-top:56px}
  .wrap{padding:24px 16px 0}
  .footer .inner{padding:0 16px}
  .page-hero{padding:32px 22px;border-radius:16px}
  .page-hero h1{font-size:26px}
  .lede{font-size:15px}
  .sec{margin-top:56px}
  .sec-head h2{font-size:22px}
  .card-grid,.mini-grid,.stat-row{grid-template-columns:1fr}
  .cta{padding:32px 22px}
  .cta h2{font-size:22px}
  .cta-actions{flex-direction:column}
  .btn{width:100%}
  .footer{padding:48px 0 20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .accordion-button{font-size:16px;padding:16px 18px}
  .accordion-body{padding:0 18px 18px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
}