/* roulang page: index */
:root{
  --brand:#1f5ae0;
  --brand-dark:#12409f;
  --brand-soft:#eaf1ff;
  --accent:#0fb5a0;
  --accent-soft:#e5faf6;
  --ink:#0f1b2d;
  --ink-2:#33445f;
  --muted:#66788f;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --line:#e2e8f4;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.06);
  --shadow:0 10px 28px rgba(15,27,45,.08);
  --shadow-lg:0 22px 54px rgba(15,27,45,.13);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.32;letter-spacing:-.015em;font-weight:700}
:focus-visible{outline:3px solid rgba(31,90,224,.45);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 26px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),#3d80ff);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,90,224,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text b{font-size:16px;letter-spacing:-.02em}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2.5px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,90,224,.26)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,90,224,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{color:var(--brand);border-color:#c8d8f8;background:var(--brand-soft)}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:13px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 8% -10%,#dce9ff 0%,rgba(220,233,255,0) 62%),
    radial-gradient(760px 380px at 96% 4%,#e4fbf6 0%,rgba(228,251,246,0) 58%),
    linear-gradient(180deg,#fbfdff 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-inner{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:56px;align-items:center;padding:74px 0 62px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;background:#fff;
  border:1px solid #d6e3fb;color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;box-shadow:var(--shadow-sm);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.hero h1{
  font-size:clamp(28px,3.6vw,44px);
  margin:20px 0 18px;letter-spacing:-.03em;
}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:620px}
.hero-form{margin-top:26px;display:flex;gap:10px;flex-wrap:wrap;max-width:520px}
.hero-form input{
  flex:1 1 220px;min-width:0;padding:13px 16px;border-radius:12px;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);font-size:15px;
}
.hero-form input::placeholder{color:#9aa9bd}
.hero-form input:focus{border-color:#b9cdf7;outline:none;box-shadow:0 0 0 4px rgba(31,90,224,.12)}
.form-tip{font-size:13px;color:var(--accent);margin-top:10px;font-weight:600}
.hero-media{position:relative}
.hero-media img{
  width:100%;height:400px;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(15,27,45,0) 42%,rgba(15,27,45,.56) 100%);
  pointer-events:none;
}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.96);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow);max-width:270px;
}
.hero-badge b{display:block;font-size:14.5px;color:var(--ink)}
.hero-badge span{font-size:12.5px;color:var(--muted)}
.hero-float{
  position:absolute;right:-6px;top:22px;z-index:2;
  background:#fff;border-radius:14px;padding:11px 15px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:var(--ink-2);
}
.hero-float i{width:9px;height:9px;border-radius:50%;background:var(--accent);display:inline-block}

/* route nodes */
.route-bar{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 24px;margin-bottom:52px;
}
.route-bar-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap}
.route-bar-head h2{font-size:16px}
.route-bar-head span{font-size:13px;color:var(--muted)}
.route-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.route-node{
  position:relative;padding:14px 16px;border-radius:12px;
  background:var(--bg);border:1px solid var(--line);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.route-node:hover{border-color:#c3d5f9;background:#f0f6ff;transform:translateY(-2px)}
.route-node b{display:block;font-size:12px;color:var(--brand);letter-spacing:.08em;margin-bottom:4px}
.route-node strong{display:block;font-size:14.5px;margin-bottom:2px}
.route-node span{font-size:12.5px;color:var(--muted);line-height:1.55}

/* ---------- Section base ---------- */
.section{padding:74px 0}
.section--soft{background:var(--bg)}
.section--white{background:#fff}
.section--tint{background:linear-gradient(180deg,#fbfdff 0%,#f2f7ff 100%)}
.section-head{max-width:780px;margin-bottom:38px}
.section-head .kicker{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.9vw,32px)}
.section-head p{color:var(--muted);margin-top:14px;font-size:15.5px}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
.section-head--split .txt{max-width:700px}

/* ---------- Metrics ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.metric strong{
  display:block;font-size:clamp(26px,3vw,36px);letter-spacing:-.03em;
  color:var(--brand);font-weight:800;line-height:1.1;
}
.metric strong small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.metric span{display:block;margin-top:8px;font-size:14px;color:var(--ink-2);font-weight:600}
.metric p{margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- Search / entry ---------- */
.search-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:32px;
}
.search-row{display:flex;gap:12px;flex-wrap:wrap}
.search-row input[type="search"]{
  flex:1 1 320px;min-width:0;padding:14px 18px;border-radius:12px;
  border:1px solid var(--line);background:#fbfcff;font-size:15px;
}
.search-row input[type="search"]:focus{outline:none;border-color:#b9cdf7;background:#fff;box-shadow:0 0 0 4px rgba(31,90,224,.12)}
.search-row select{
  padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  background:#fbfcff;font-size:15px;cursor:pointer;min-width:150px;
}
.hot-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.hot-tags a,.tag-pill{
  display:inline-block;padding:7px 14px;border-radius:999px;
  background:var(--bg);border:1px solid var(--line);
  font-size:13px;color:var(--ink-2);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.hot-tags a:hover{background:var(--brand-soft);color:var(--brand);border-color:#c8d8f8}

/* ---------- Category matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.matrix-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf7}
.matrix-card .num{
  width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;
}
.matrix-card h3{font-size:16.5px}
.matrix-card p{font-size:13.5px;color:var(--muted);line-height:1.68}
.matrix-card--feature{
  grid-column:span 1;
  background:linear-gradient(150deg,#12368f 0%,#1f5ae0 62%,#3d80ff 100%);
  color:#fff;border-color:transparent;
}
.matrix-card--feature .num{background:rgba(255,255,255,.18);color:#fff}
.matrix-card--feature h3{color:#fff}
.matrix-card--feature p{color:rgba(255,255,255,.82)}
.matrix-card--feature .card-link{color:#fff;font-size:13.5px;font-weight:700;margin-top:auto}
.matrix-card--feature:hover{transform:translateY(-4px);box-shadow:0 22px 48px rgba(18,54,143,.32)}
.card-link{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.card-link::after{content:"→";transition:transform .2s ease}
a.matrix-card:hover .card-link::after{transform:translateX(4px)}

/* ---------- Capability grid ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.cap:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.cap .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--accent-soft);color:#0a8577;font-weight:800;font-size:14px;
  margin-bottom:14px;
}
.cap h3{font-size:16.5px;margin-bottom:8px}
.cap p{font-size:13.8px;color:var(--muted);line-height:1.7}

/* ---------- Post cards ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#cfdcf7}
.post-card__link{display:flex;flex-direction:column;height:100%}
.post-card__thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:#eef3fc}
.post-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-card__thumb img{transform:scale(1.05)}
.post-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.tag{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-soft);padding:4px 10px;border-radius:999px;
}
.post-card h3{font-size:16px;line-height:1.5}
.post-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.post-card__time{margin-top:auto;font-size:12.5px;color:#93a2b8}
.empty-note{
  grid-column:1/-1;text-align:center;padding:44px 20px;border:1px dashed #cdd9ec;
  border-radius:var(--radius);color:var(--muted);background:#fff;font-size:14.5px;
}

/* ---------- Update log ---------- */
.log-list{display:grid;gap:14px}
.log-item{
  display:grid;grid-template-columns:120px 1fr;gap:22px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 24px;box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,transform .2s ease;
}
.log-item:hover{border-color:#cfdcf7;transform:translateX(3px)}
.log-item time{
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.04em;padding-top:2px;
}
.log-item h3{font-size:15.5px;margin-bottom:6px}
.log-item p{font-size:13.5px;color:var(--muted);line-height:1.7}
.log-item .ver{
  display:inline-block;font-size:11.5px;font-weight:700;color:#0a8577;
  background:var(--accent-soft);padding:2px 8px;border-radius:6px;margin-right:8px;
}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{
  border-radius:var(--radius);padding:28px;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-sm);
}
.compare-col h3{font-size:17px;margin-bottom:6px}
.compare-col .sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.compare-col--old{background:#fafbfe}
.compare-col--new{
  background:linear-gradient(160deg,#f2f7ff 0%,#ffffff 70%);
  border-color:#cddcf8;box-shadow:var(--shadow);
}
.compare-list li{
  display:flex;gap:10px;padding:11px 0;font-size:14px;color:var(--ink-2);
  border-bottom:1px dashed #e8eefa;line-height:1.65;
}
.compare-list li:last-child{border-bottom:none}
.compare-list li::before{
  content:"";flex:0 0 8px;height:8px;border-radius:50%;margin-top:8px;
  background:#c3cede;
}
.compare-col--new .compare-list li::before{background:var(--accent)}

/* ---------- Milestone ---------- */
.timeline{position:relative;padding-left:26px;display:grid;gap:26px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,#c8d8f8,#e6eefc);
}
.tl-item{position:relative}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:7px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(31,90,224,.1);
}
.tl-item b{display:block;font-size:12.5px;color:var(--brand);letter-spacing:.1em;font-weight:800}
.tl-item h3{font-size:16px;margin:5px 0 6px}
.tl-item p{font-size:13.8px;color:var(--muted);line-height:1.7;max-width:720px}

/* ---------- Ranking ---------- */
.rank-wrap{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:26px;align-items:start}
.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}
.rank-item{
  display:flex;align-items:center;gap:16px;padding:16px 22px;
  border-bottom:1px solid #eef3fb;transition:background .18s ease;
}
.rank-item:last-child{border-bottom:none}
.rank-item:hover{background:#f7faff}
.rank-no{
  flex:0 0 30px;height:30px;border-radius:9px;background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:13px;color:var(--muted);
}
.rank-item:nth-child(1) .rank-no{background:#fff1e6;color:#c2610f}
.rank-item:nth-child(2) .rank-no{background:#eef2fb;color:#425a86}
.rank-item:nth-child(3) .rank-no{background:#e9f7f3;color:#0a8577}
.rank-main{min-width:0;flex:1}
.rank-main h3{font-size:14.8px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-main span{font-size:12.5px;color:var(--muted)}
.rank-arrow{font-size:13px;color:var(--brand);font-weight:700;opacity:0;transition:opacity .2s ease}
.rank-item:hover .rank-arrow{opacity:1}
.rank-side{
  background:linear-gradient(160deg,#12368f,#1f5ae0);color:#fff;
  border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
}
.rank-side h3{font-size:17px;margin-bottom:10px}
.rank-side p{font-size:13.8px;color:rgba(255,255,255,.82);line-height:1.75}
.rank-side ul{margin-top:18px;display:grid;gap:10px}
.rank-side li{
  font-size:13.5px;color:rgba(255,255,255,.9);
  padding-left:16px;position:relative;
}
.rank-side li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:#7cf0dc;
}

/* ---------- Resource ---------- */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.res-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:10px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.res-card .res-ico{
  width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;letter-spacing:.04em;
}
.res-card h3{font-size:15.5px}
.res-card p{font-size:13.4px;color:var(--muted);line-height:1.68}
.res-card .res-meta{font-size:12px;color:#93a2b8;margin-top:auto}

/* ---------- News / CMS ---------- */
.news-wrap{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:28px;align-items:start}
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:150px 1fr;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdcf7}
.news-thumb{overflow:hidden;border-radius:12px;aspect-ratio:4/3;background:#eef3fc}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-item:hover .news-thumb img{transform:scale(1.06)}
.news-body h3{font-size:15.5px;margin:6px 0 6px;line-height:1.5}
.news-body p{font-size:13.4px;color:var(--muted);line-height:1.68}
.news-meta{display:flex;gap:12px;align-items:center;font-size:12.5px;color:#93a2b8;margin-top:8px}
.side-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
}
.side-panel h3{font-size:15.5px;margin-bottom:14px}
.side-panel ul{display:grid;gap:12px}
.side-panel li{font-size:13.6px;color:var(--ink-2);line-height:1.6;padding-bottom:12px;border-bottom:1px dashed #e8eefa}
.side-panel li:last-child{border-bottom:none;padding-bottom:0}
.side-panel li a{transition:color .18s ease}
.side-panel li a:hover{color:var(--brand)}
.side-panel .note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.more-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:14px;font-weight:700;color:var(--brand);
}
.more-link:hover{color:var(--brand-dark)}

/* ---------- Bookmark ---------- */
.bookmark-band{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:36px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px;box-shadow:var(--shadow);
}
.bookmark-band h2{font-size:clamp(20px,2.4vw,27px)}
.bookmark-band p{color:var(--muted);font-size:14.5px;margin-top:14px}
.bm-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bm-item{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  transition:background .2s ease,border-color .2s ease;
}
.bm-item:hover{background:#f0f6ff;border-color:#c8d8f8}
.bm-item b{display:block;font-size:14px;margin-bottom:4px}
.bm-item span{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ---------- Guarantee ---------- */
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.g-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.g-item:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.g-item .dot{
  width:34px;height:34px;border-radius:50%;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.g-item .dot::before{content:"";width:11px;height:11px;border-radius:50%;background:var(--accent)}
.g-item h3{font-size:15.5px;margin-bottom:8px}
.g-item p{font-size:13.4px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item[open]{border-color:#cddcf8;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:15.2px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:19px;font-weight:500;color:var(--brand);
  width:26px;height:26px;border-radius:8px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item .faq-body{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- Join form ---------- */
.join-band{
  background:linear-gradient(150deg,#0e2d7a 0%,#1f5ae0 58%,#3f83ff 100%);
  color:#fff;border-radius:var(--radius-lg);
  padding:46px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);
  gap:40px;align-items:center;box-shadow:0 28px 60px rgba(18,54,143,.28);
}
.join-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff}
.join-band p{color:rgba(255,255,255,.84);font-size:14.5px;margin-top:14px;line-height:1.8}
.join-form{display:grid;gap:12px}
.join-form input,.join-form select{
  width:100%;padding:13px 16px;border-radius:12px;font-size:14.5px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.13);color:#fff;
}
.join-form input::placeholder{color:rgba(255,255,255,.62)}
.join-form select{color:#fff}
.join-form select option{color:#0f1b2d}
.join-form input:focus,.join-form select:focus{
  outline:none;border-color:rgba(255,255,255,.7);background:rgba(255,255,255,.2);
  box-shadow:0 0 0 4px rgba(255,255,255,.14);
}
.join-form .btn-primary{background:#fff;color:#12409f;box-shadow:none}
.join-form .btn-primary:hover{background:#eef4ff;color:#0e2d7a}
.join-tip{font-size:12.5px;color:rgba(255,255,255,.72);line-height:1.7}
.form-ok{font-size:13.5px;color:#a9ffe9;font-weight:600}

/* ---------- Footer ---------- */
.site-footer{background:#0c1729;color:#c3cfe0;margin-top:0}
.footer-main{
  display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.6fr));
  gap:40px;padding:60px 0 42px;
}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text em{color:#8ea2bd}
.footer-brand p{margin-top:16px;font-size:13.8px;color:#93a7c1;line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:13.6px;color:#93a7c1;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-col li{font-size:13.6px;color:#93a7c1}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:12.8px;color:#7d90aa;
}
.footer-bottom a{color:#a9bdd6}
.footer-bottom a:hover{color:#fff}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:56px 0 46px}
  .hero-media img{height:320px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .matrix{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .res-grid{grid-template-columns:repeat(2,1fr)}
  .guarantee{grid-template-columns:repeat(2,1fr)}
  .rank-wrap{grid-template-columns:1fr}
  .news-wrap{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
  .join-band{grid-template-columns:1fr;padding:36px}
  .bookmark-band{grid-template-columns:1fr;padding:32px}
  .route-nodes{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 20px 18px;box-shadow:0 16px 30px rgba(15,27,45,.1);
    display:none;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 14px;border-radius:10px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--brand-soft)}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-actions{margin-left:0}
  .header-inner{position:relative;gap:14px;min-height:66px}
  .nav-actions .btn-ghost{display:none}
  .nav-actions .btn{padding:10px 16px;font-size:14px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .compare{grid-template-columns:1fr}
  .news-item{grid-template-columns:112px 1fr;gap:14px}
  .log-item{grid-template-columns:1fr;gap:8px}
  .bm-grid{grid-template-columns:1fr}
  .section-head--split{flex-direction:column;align-items:flex-start;gap:14px}
  .footer-main{grid-template-columns:1fr;gap:26px;padding:44px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-form{max-width:none}
  .hero-float{right:8px;top:12px;font-size:12px;padding:9px 12px}
  .hero-badge{left:12px;bottom:12px;max-width:calc(100% - 24px)}
  .join-band{padding:28px 22px;gap:26px}
  .bookmark-band{padding:26px 22px}
  .route-bar{padding:18px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero h1{font-size:26px}
  .hero-lead{font-size:15px}
  .metrics{grid-template-columns:1fr}
  .matrix{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .res-grid{grid-template-columns:1fr}
  .guarantee{grid-template-columns:1fr}
  .route-nodes{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr}
  .news-thumb{aspect-ratio:16/9}
  .hero-media img{height:250px}
  .logo-text b{font-size:14.5px}
  .logo-text em{font-size:10.5px}
  .nav-actions .btn{padding:9px 13px;font-size:13px}
  .search-panel{padding:22px}
  .section-head h2{font-size:22px}
}

/* roulang page: category1 */
:root{
  --brand:#1f5ae0;
  --brand-dark:#12409f;
  --brand-soft:#eaf1ff;
  --accent:#0fb5a0;
  --accent-soft:#e5faf6;
  --ink:#0f1b2d;
  --ink-2:#33445f;
  --muted:#66788f;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --line:#e2e8f4;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.06);
  --shadow:0 10px 28px rgba(15,27,45,.08);
  --shadow-lg:0 22px 54px rgba(15,27,45,.13);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 26px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),#3d80ff);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,90,224,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.logo-text b{font-size:15px;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2.5px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,90,224,.26)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,90,224,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{color:var(--brand);border-color:#c8d8f8;background:var(--brand-soft)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(15,181,160,.26)}
.btn-accent:hover{background:#0a9c8a;transform:translateY(-1px)}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:13px}
.btn-block{width:100%}
.btn:focus-visible{outline:3px solid rgba(31,90,224,.35);outline-offset:2px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(920px 420px at 6% -12%,#dce9ff 0%,rgba(220,233,255,0) 62%),
    radial-gradient(780px 380px at 98% 2%,#e4fbf6 0%,rgba(228,251,246,0) 58%),
    linear-gradient(180deg,#fbfdff 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-inner{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:54px;align-items:center;padding:66px 0 62px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;background:#fff;
  border:1px solid #d6e3fb;color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;box-shadow:var(--shadow-sm);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.hero h1{font-size:clamp(27px,3.4vw,42px);margin:20px 0 16px;letter-spacing:-.03em;line-height:1.28}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:600px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-2);font-weight:500;box-shadow:var(--shadow-sm);
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.group-meter{
  margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;box-shadow:var(--shadow);max-width:540px;
}
.group-meter-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-2)}
.group-meter-head b{color:var(--brand);font-size:15px}
.meter{height:8px;border-radius:999px;background:#eef3fc;margin:10px 0 8px;overflow:hidden}
.meter span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),#57a0ff)}
.group-meter-foot{display:flex;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--muted)}
.group-meter-foot b{color:var(--accent)}
.hero-media{position:relative}
.hero-media img{width:100%;height:392px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(15,27,45,0) 46%,rgba(15,27,45,.5) 100%);
  pointer-events:none;
}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.96);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow);max-width:280px;
}
.hero-badge b{display:block;font-size:14.5px}
.hero-badge span{font-size:12.5px;color:var(--muted)}
.hero-float{
  position:absolute;right:-6px;top:20px;z-index:2;
  background:#fff;border-radius:14px;padding:11px 15px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:var(--ink-2);
}
.hero-float i{width:9px;height:9px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- Section base ---------- */
.section{padding:74px 0}
.section--white{background:#fff}
.section--soft{background:var(--bg)}
.section--tint{background:linear-gradient(180deg,#fbfdff 0%,#f1f6ff 100%)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:700;letter-spacing:.06em;margin-bottom:14px;
}
.section-tag.accent{background:var(--accent-soft);color:#0a8e7f}
.section-head h2{font-size:clamp(22px,2.5vw,32px);letter-spacing:-.02em;line-height:1.35}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}

/* ---------- Stats ---------- */
.stats{
  background:#fff;border-bottom:1px solid var(--line);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;padding:0}
.stat{
  padding:28px 24px;border-right:1px solid var(--line);
  transition:background .2s ease;
}
.stat:last-child{border-right:0}
.stat:hover{background:#fafcff}
.stat b{display:block;font-size:30px;letter-spacing:-.03em;color:var(--brand);line-height:1.2}
.stat b small{font-size:15px;font-weight:600;color:var(--ink-2);margin-left:2px}
.stat span{display:block;font-size:13.5px;color:var(--muted);margin-top:4px}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdcf6}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:15px;margin-bottom:16px;
}
.card-icon.accent{background:var(--accent-soft);color:#0a8e7f}
.card h3{font-size:17.5px;margin-bottom:8px;letter-spacing:-.01em}
.card p{font-size:14.5px;color:var(--ink-2)}
.card ul{margin-top:12px;display:grid;gap:7px}
.card ul li{position:relative;padding-left:18px;font-size:14px;color:var(--muted)}
.card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--accent);opacity:.75;
}

/* ---------- Activity types ---------- */
.type-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.type-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.type-card figure{position:relative;margin:0;overflow:hidden}
.type-card img{width:100%;height:180px;object-fit:cover;transition:transform .45s ease}
.type-card:hover img{transform:scale(1.05)}
.type-card figcaption{
  position:absolute;left:14px;top:14px;
  background:rgba(255,255,255,.94);border-radius:999px;padding:4px 12px;
  font-size:12px;font-weight:700;color:var(--brand);
}
.type-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.type-body h3{font-size:17px}
.type-body p{font-size:14px;color:var(--ink-2);flex:1}
.type-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  background:var(--bg);border:1px solid var(--line);font-size:12px;color:var(--muted);
}
.tag.brand{background:var(--brand-soft);border-color:#d3e0fb;color:var(--brand);font-weight:600}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.step:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:-14px;left:22px;
  background:var(--brand);color:#fff;font-size:12.5px;font-weight:800;letter-spacing:.06em;
  padding:4px 11px;border-radius:999px;box-shadow:0 6px 14px rgba(31,90,224,.28);
}
.step h3{font-size:16.5px;margin:14px 0 8px}
.step p{font-size:14px;color:var(--ink-2)}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.compare-card{
  border-radius:var(--radius-lg);padding:30px 28px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-sm);
}
.compare-card.dark{
  background:linear-gradient(150deg,#12305f 0%,#1f5ae0 100%);
  color:#fff;border-color:transparent;box-shadow:var(--shadow-lg);
}
.compare-card h3{font-size:19px;margin-bottom:16px}
.compare-card.dark h3{color:#fff}
.compare-card ul{display:grid;gap:12px}
.compare-card li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start;color:var(--ink-2)}
.compare-card.dark li{color:rgba(255,255,255,.9)}
.compare-card li i{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;margin-top:2px;
  display:flex;align-items:center;justify-content:center;font-size:11px;font-style:normal;font-weight:800;
  background:#eef3fc;color:var(--muted);
}
.compare-card.dark li i{background:rgba(255,255,255,.18);color:#fff}
.compare-note{margin-top:18px;font-size:13px;color:var(--muted)}
.compare-card.dark .compare-note{color:rgba(255,255,255,.72)}

/* ---------- Guard band ---------- */
.guard{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(120deg,rgba(15,40,84,.9),rgba(31,90,224,.82)),url("/assets/images/7c205eb26ec59262.webp");
  background-size:cover;background-position:center;
}
.guard .container{position:relative;z-index:2}
.guard-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:44px;align-items:center}
.guard h2{font-size:clamp(22px,2.5vw,31px);letter-spacing:-.02em;line-height:1.35}
.guard p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.82);max-width:440px}
.guard-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.guard-item{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:18px 20px;backdrop-filter:blur(6px);
  transition:background .2s ease,transform .2s ease;
}
.guard-item:hover{background:rgba(255,255,255,.17);transform:translateY(-2px)}
.guard-item b{display:block;font-size:15px;margin-bottom:6px}
.guard-item span{font-size:13px;color:rgba(255,255,255,.78);line-height:1.65}

/* ---------- News list ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdcf6}
.news-card img{width:100%;height:158px;object-fit:cover}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted);align-items:center}
.news-meta .dot{width:4px;height:4px;border-radius:50%;background:#c5d1e4}
.news-card h3{font-size:16.5px;line-height:1.5;letter-spacing:-.01em}
.news-card h3 a{transition:color .18s ease}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{font-size:14px;color:var(--ink-2);flex:1}
.news-link{font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.news-link:hover{color:var(--brand-dark)}
.empty-note{
  grid-column:1/-1;text-align:center;padding:44px 20px;color:var(--muted);
  background:#fff;border:1px dashed #cfdcf6;border-radius:var(--radius);font-size:15px;
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:880px;margin:0 auto}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:0 22px;box-shadow:var(--shadow-sm);transition:box-shadow .2s ease,border-color .2s ease;
}
.faq details[open]{box-shadow:var(--shadow);border-color:#cfdcf6}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 0;font-size:15.5px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease;
}
.faq details[open] summary::after{content:"−";transform:rotate(180deg)}
.faq p{padding:0 0 20px;font-size:14.5px;color:var(--ink-2)}

/* ---------- CTA / Form ---------- */
.cta-wrap{
  background:linear-gradient(160deg,#f3f8ff 0%,#eef6ff 48%,#e9f8f4 100%);
  border-top:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:48px;align-items:start}
.cta-copy h2{font-size:clamp(22px,2.5vw,32px);letter-spacing:-.02em;line-height:1.35}
.cta-copy p{margin-top:14px;color:var(--ink-2);font-size:15.5px;max-width:520px}
.cta-copy ul{margin-top:22px;display:grid;gap:10px}
.cta-copy li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);align-items:flex-start}
.cta-copy li i{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;margin-top:3px;
  background:var(--accent-soft);color:#0a8e7f;font-style:normal;font-weight:800;font-size:11px;
  display:flex;align-items:center;justify-content:center;
}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 28px;box-shadow:var(--shadow-lg);
}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#fbfdff;font-size:14.5px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:86px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#b9cdf7;background:#fff;box-shadow:0 0 0 4px rgba(31,90,224,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#9aa9bd}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.6}
.form-msg{
  display:none;margin-top:14px;padding:11px 14px;border-radius:var(--radius-sm);
  background:var(--accent-soft);color:#0a7f70;font-size:13.5px;font-weight:600;
}
.form-msg.show{display:block}

/* ---------- Footer ---------- */
.site-footer{background:#0d1b30;color:rgba(255,255,255,.72);padding:62px 0 0;margin-top:0}
.footer-main{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text b{color:#fff;max-width:100%;white-space:normal}
.footer-brand .logo-text em{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;max-width:400px}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:13.5px;color:rgba(255,255,255,.6)}
.footer-col a{color:rgba(255,255,255,.6);transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:52px 0 48px}
  .hero-media img{height:330px}
  .hero-float{right:12px}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .guard-grid{grid-template-columns:1fr;gap:30px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px 18px;box-shadow:var(--shadow);
    display:none;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:11px 12px;border-radius:10px}
  .nav-link.active::after{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-inner{gap:14px;min-height:66px;position:relative}
  .logo-text b{max-width:200px;font-size:14px}
  .logo-text em{font-size:10.5px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .guard-list{grid-template-columns:1fr}
  .faq summary{font-size:15px}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;text-align:left}
}
@media (max-width:520px){
  .hero-cta .btn{width:100%}
  .grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:20px 18px}
  .stat:last-child{border-bottom:0}
  .stat b{font-size:26px}
  .hero-media img{height:260px}
  .hero-float{display:none}
  .form-card{padding:24px 20px}
  .logo-text b{max-width:150px;font-size:13px}
  .logo-mark{width:36px;height:36px;font-size:13px}
}

/* roulang page: article */
:root{
  --brand:#1f5ae0;
  --brand-dark:#12409f;
  --brand-soft:#eaf1ff;
  --accent:#0fb5a0;
  --accent-soft:#e5faf6;
  --ink:#0f1b2d;
  --ink-2:#33445f;
  --muted:#66788f;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --line:#e2e8f4;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.06);
  --shadow:0 10px 28px rgba(15,27,45,.08);
  --shadow-lg:0 22px 54px rgba(15,27,45,.13);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 26px}
/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px;position:relative}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),#3d80ff);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,90,224,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text b{font-size:16px;letter-spacing:-.02em}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2.5px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,90,224,.26)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,90,224,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{color:var(--brand);border-color:#c8d8f8;background:var(--brand-soft)}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:13px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid rgba(31,90,224,.35);outline-offset:2px;
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* ---------- Article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(880px 400px at 6% -20%,#dce9ff 0%,rgba(220,233,255,0) 62%),
    radial-gradient(720px 360px at 98% 0%,#e4fbf6 0%,rgba(228,251,246,0) 58%),
    linear-gradient(180deg,#fbfdff 0%,#f2f7ff 100%);
  border-bottom:1px solid var(--line);
  padding:32px 0 52px;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--ink-2);font-weight:500}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:#b7c4d8}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:52px;align-items:center}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.article-title{
  font-size:clamp(24px,3.1vw,38px);line-height:1.32;margin:16px 0 16px;letter-spacing:-.03em;
}
.article-sub{font-size:15.5px;color:var(--ink-2);max-width:640px}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:24px;padding-top:18px;
  border-top:1px dashed #d7e2f3;font-size:13.5px;color:var(--muted);
}
.meta-row b{color:var(--ink-2);font-weight:600}
.article-cover{margin:0;position:relative}
.article-cover img{
  width:100%;height:340px;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
}
.article-cover figcaption{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.95);border-radius:12px;padding:10px 15px;
  font-size:12.5px;color:var(--ink-2);font-weight:600;box-shadow:var(--shadow);
}
/* ---------- Sections ---------- */
.section{padding:72px 0}
.section--white{background:#fff}
.section--soft{background:var(--bg)}
.section--tint{background:linear-gradient(180deg,#fbfdff 0%,#f1f6ff 100%)}
.section-head{max-width:720px;margin-bottom:38px}
.section-head h2{font-size:clamp(22px,2.5vw,30px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px}
.kicker{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
/* ---------- Article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:40px;align-items:start}
.article-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 44px;box-shadow:var(--shadow);
}
.article-body{font-size:16.5px;line-height:1.92;color:var(--ink-2);overflow-wrap:break-word}
.article-body h2{
  font-size:22px;color:var(--ink);margin:36px 0 14px;padding-left:14px;
  border-left:4px solid var(--brand);line-height:1.45;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:18px;color:var(--ink);margin:26px 0 10px}
.article-body p{margin:0 0 16px}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow-sm)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(31,90,224,.32)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--brand-soft);color:var(--ink-2);
  border-left:4px solid var(--brand);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:#f4f8ff;color:var(--ink);font-weight:600}
.article-empty{text-align:center;padding:26px 0}
.article-empty h2{font-size:22px;margin-bottom:12px}
.article-empty p{color:var(--muted);margin-bottom:22px}
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:15.5px;margin-bottom:16px;letter-spacing:-.01em}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:13px}
.side-list li{display:flex;gap:10px;font-size:14px;line-height:1.65;color:var(--ink-2)}
.side-list li .dot{
  flex:0 0 auto;width:18px;height:18px;border-radius:50%;margin-top:3px;
  background:var(--accent-soft);color:var(--accent);font-size:11px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.side-card--brand{background:linear-gradient(150deg,#12409f,#1f5ae0);border-color:transparent;color:#fff}
.side-card--brand h3{color:#fff}
.side-card--brand p{font-size:13.8px;color:rgba(255,255,255,.82);margin-bottom:18px;line-height:1.7}
.side-card--brand .btn-ghost{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.42);color:#fff}
.side-card--brand .btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff}
/* ---------- Type grid ---------- */
.type-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.type-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.type-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c8d8f8}
.icon-box{
  width:44px;height:44px;border-radius:13px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;
  margin-bottom:16px;
}
.type-card h3{font-size:16.5px;margin-bottom:8px}
.type-card p{font-size:14.2px;color:var(--muted);line-height:1.7}
.type-card .type-tag{
  display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;color:var(--accent);
  background:var(--accent-soft);padding:4px 10px;border-radius:999px;
}
/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-sm);
}
.step-card .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;
  font-size:13.5px;font-weight:800;margin-bottom:14px;
}
.step-card h3{font-size:15.5px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--muted);line-height:1.7}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 24px;box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#c8d8f8;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;font-weight:600;font-size:15.5px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff}
.faq-item p{margin-top:12px;font-size:14.8px;color:var(--ink-2);line-height:1.8}
/* ---------- Related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c8d8f8}
.related-card img{width:100%;height:168px;object-fit:cover}
.related-body{padding:20px 22px 24px}
.related-body .label{font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.04em}
.related-body h3{font-size:16.5px;margin:8px 0 8px}
.related-body p{font-size:14px;color:var(--muted);line-height:1.7}
/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:56px 52px;color:#fff;
  background:
    linear-gradient(118deg,rgba(18,64,159,.95) 0%,rgba(31,90,224,.9) 52%,rgba(15,181,160,.84) 100%),
    url('/assets/images/7c205eb26ec59262.webp') center/cover no-repeat;
  box-shadow:var(--shadow-lg);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:46px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.86);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-band .btn-primary{background:#fff;color:var(--brand-dark);box-shadow:0 12px 26px rgba(0,0,0,.18)}
.cta-band .btn-primary:hover{background:#eef4ff;color:var(--brand-dark)}
.cta-band .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.45);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff;border-color:rgba(255,255,255,.6)}
.cta-form{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);
  border-radius:var(--radius);padding:26px;backdrop-filter:blur(6px);
}
.cta-form label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:#fff}
.cta-form input{
  width:100%;padding:13px 16px;border-radius:11px;border:1px solid rgba(255,255,255,.4);
  background:rgba(255,255,255,.94);color:var(--ink);font-size:15px;
}
.cta-form input::placeholder{color:#93a3b9}
.cta-form input:focus{outline:none;box-shadow:0 0 0 4px rgba(255,255,255,.35)}
.cta-form .btn{margin-top:14px}
.cta-form small{display:block;margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.78)}
/* ---------- Footer ---------- */
.site-footer{background:#0d1a2e;color:#c6d3e6;padding:62px 0 26px;margin-top:0}
.footer-main{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-mark{background:linear-gradient(135deg,#3d80ff,#0fb5a0)}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text em{color:#8ea3bf}
.footer-brand p{font-size:14px;line-height:1.8;color:#9db0c9;max-width:380px}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col li{font-size:14px;color:#9db0c9;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:#8296b1;
}
.footer-bottom a{color:#a9bcd6}
.footer-bottom a:hover{color:#fff}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .main-nav{
    display:none;position:absolute;top:74px;left:-26px;right:-26px;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:12px 26px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 10px;border-radius:8px}
  .nav-link.active::after{display:none}
  .nav-toggle{display:flex}
  .article-hero-grid{grid-template-columns:1fr;gap:30px}
  .article-cover img{height:300px}
  .article-layout{grid-template-columns:1fr;gap:28px}
  .side-stack{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .type-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .cta-band{padding:44px 34px}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{min-height:66px;gap:12px}
  .main-nav{top:66px;left:-18px;right:-18px;padding:10px 18px 16px}
  .logo-text b{font-size:14.5px}
  .logo-text em{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-actions .btn{padding:9px 15px;font-size:13.5px}
  .article-hero{padding:22px 0 36px}
  .article-panel{padding:26px 20px;border-radius:var(--radius)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-cover img{height:230px}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .type-grid,.step-grid,.related-grid{grid-template-columns:1fr}
  .side-stack{grid-template-columns:1fr}
  .cta-band{padding:34px 22px;border-radius:var(--radius)}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-title{font-size:22px}
  .meta-row{font-size:12.5px;gap:6px 16px}
  .article-body{font-size:15.5px}
  .article-body table{font-size:13.5px}
  .article-body th,.article-body td{padding:8px 10px}
  .article-cover figcaption{left:10px;bottom:10px;padding:8px 12px;font-size:11.5px}
  .quote,.article-body blockquote{padding:14px 16px}
  .cta-actions .btn{width:100%}
  .cta-form{padding:20px}
}