/* roulang page: index */
:root{
  --brand-900:#0a1e3a;
  --brand-800:#0f2c53;
  --brand-700:#123a6b;
  --brand-500:#1d5fae;
  --brand-300:#4b8fd8;
  --gold:#e0a94b;
  --gold-soft:#f7e7c6;
  --danger:#d6453d;
  --ink:#16202f;
  --ink-2:#46536a;
  --ink-3:#6b7891;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(16,38,71,.06);
  --shadow:0 14px 34px rgba(12,33,64,.10);
  --shadow-lg:0 26px 60px rgba(9,26,52,.18);
  --shell:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:15.5px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.2px;line-height:1.4;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
.site-container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,38,71,.02);
}
.nav-row{display:flex;align-items:center;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand-300),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;letter-spacing:0;
  box-shadow:0 10px 20px rgba(29,95,174,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.6px;}
.brand-sub{font-size:11.5px;color:var(--ink-3);letter-spacing:.3px;}
.nav-search{position:relative;flex:1 1 auto;min-width:0;max-width:430px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#f6f9fd;padding:0 46px 0 18px;font-size:14px;color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input:focus{
  outline:none;border-color:var(--brand-300);background:#fff;
  box-shadow:0 0 0 4px rgba(29,95,174,.12);
}
.nav-search .search-icon{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);
  color:var(--ink-3);font-size:14px;pointer-events:none;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-shrink:0;}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:14.5px;color:var(--ink-2);
  transition:background .2s,color .2s;white-space:nowrap;
}
.nav-links a:hover{background:#eef4fd;color:var(--brand-700);}
.nav-links a.active{
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;box-shadow:0 8px 18px rgba(29,95,174,.24);
}
.nav-links a.nav-dl{
  background:linear-gradient(135deg,#f0b857,var(--gold));
  color:#3a2703;font-weight:700;
  box-shadow:0 8px 18px rgba(224,169,75,.28);
}
.nav-links a.nav-dl:hover{background:linear-gradient(135deg,#e8ac3f,#cf9a3a);color:#2c1d02;}
.nav-links a:focus-visible{outline:3px solid rgba(75,143,216,.5);outline-offset:2px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  padding:66px 0 74px;
  background:
    radial-gradient(900px 420px at 8% -20%,rgba(75,143,216,.45),transparent 62%),
    radial-gradient(700px 380px at 96% 10%,rgba(224,169,75,.22),transparent 65%),
    linear-gradient(158deg,#091b33 0%,#123a6b 56%,#0c2a4e 100%);
}
.hero::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;
  border-radius:50%;background:rgba(75,143,216,.16);filter:blur(10px);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:46px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:1px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#dbe9fb;
}
.hero h1{
  font-size:clamp(25px,3.15vw,39px);
  line-height:1.38;margin:18px 0 18px;color:#fff;letter-spacing:.3px;
}
.hero .lead{font-size:15.8px;color:#c9dcf3;line-height:1.9;max-width:620px;margin:0;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
}
.btn-main{
  background:linear-gradient(135deg,#f2bd60,var(--gold));
  color:#38260a;box-shadow:0 14px 28px rgba(224,169,75,.30);
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(224,169,75,.38);color:#2b1c04;}
.btn-ghost{
  background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#eaf3ff;
}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);color:#fff;}
.btn-main:focus-visible,.btn-ghost:focus-visible{outline:3px solid rgba(255,255,255,.65);outline-offset:3px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-points li{
  font-size:13px;color:#bed5ef;padding:6px 13px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);
}
.hero-panel{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius-lg);
  padding:22px 22px 18px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(8px);
}
.panel-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.panel-badges span{
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:rgba(224,169,75,.18);border:1px solid rgba(224,169,75,.4);color:#f6d999;
}
.calc{border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.16);}
.calc-row{
  display:grid;grid-template-columns:.75fr 1fr 1.35fr;gap:8px;
  padding:11px 14px;font-size:13.5px;color:#dbe9fb;
  background:rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.1);
}
.calc-row:last-child{border-bottom:none;}
.calc-head{
  background:rgba(255,255,255,.14);font-weight:700;color:#fff;font-size:13px;letter-spacing:.4px;
}
.calc-row .neg{color:#ffb3a7;font-weight:700;}
.panel-note{font-size:12.5px;color:#a9c3e0;line-height:1.8;margin:14px 0 0;}

/* ---------- section base ---------- */
.section{padding:64px 0;}
.section--alt{background:var(--surface);}
.section--soft{background:#eef3fa;}
.section-head{max-width:780px;margin-bottom:34px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.6px;
  color:var(--brand-500);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(21px,2.35vw,29px);margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:15.2px;margin:0;}

/* ---------- grids ---------- */
.grid-2,.grid-3,.grid-4{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));}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0;}

.card-site{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card-site:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.card-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e8f1fd,#d6e6fb);color:var(--brand-700);
  font-size:17px;margin-bottom:14px;
}
.card-site h3{font-size:16.5px;margin-bottom:9px;}
.card-site p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.8;}

/* ---------- download ---------- */
.section-download{padding:58px 0;}
.dl-card{
  border-radius:26px;padding:38px 34px 30px;color:#fff;position:relative;overflow:hidden;
  background:
    radial-gradient(620px 300px at 88% -30%,rgba(224,169,75,.35),transparent 66%),
    linear-gradient(140deg,#0c2444,#123a6b 60%,#0e2c53);
  box-shadow:var(--shadow);
}
.dl-head h2{font-size:clamp(20px,2.2vw,27px);margin-bottom:10px;color:#fff;}
.dl-head p{color:#c2d7ef;font-size:14.8px;max-width:720px;margin:0 0 26px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.dl-item{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:10px;min-width:0;
  transition:background .2s,border-color .2s,transform .2s;
}
.dl-item:hover{background:rgba(255,255,255,.14);border-color:rgba(224,169,75,.55);transform:translateY(-3px);}
.dl-item .dl-name{font-size:15.5px;font-weight:800;color:#fff;display:flex;align-items:center;gap:9px;}
.dl-item .dl-desc{font-size:13px;color:#b9d0ea;line-height:1.75;margin:0;flex:1 1 auto;}
.btn-dl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:999px;font-size:14px;font-weight:700;
  background:linear-gradient(135deg,#f2bd60,var(--gold));color:#372506;
  border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-dl:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(224,169,75,.34);color:#2b1c04;}
.btn-dl:focus-visible{outline:3px solid rgba(255,255,255,.7);outline-offset:3px;}
.dl-note{font-size:12.5px;color:#a6c0dd;margin:20px 0 0;line-height:1.8;}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}
.tl-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 16px;min-width:0;position:relative;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.tl-item::before{
  content:"";position:absolute;left:16px;right:16px;top:0;height:4px;
  border-radius:0 0 6px 6px;background:linear-gradient(90deg,var(--brand-300),var(--brand-700));
}
.tl-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.tl-time{font-size:13px;font-weight:800;color:var(--brand-500);letter-spacing:.4px;display:block;margin:8px 0 8px;}
.tl-item h3{font-size:15px;margin-bottom:8px;}
.tl-item p{font-size:13.5px;color:var(--ink-2);margin:0;line-height:1.78;}
.session-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-bottom:26px;padding:14px 18px;border-radius:var(--radius);
  background:var(--surface);border:1px dashed #c8d9ee;box-shadow:var(--shadow-sm);
}
.session-bar .dot{
  width:10px;height:10px;border-radius:50%;background:var(--brand-300);
  box-shadow:0 0 0 5px rgba(75,143,216,.18);flex-shrink:0;
}
.session-bar .session-label{font-size:14px;color:var(--ink-2);}
.session-bar .session-label strong{color:var(--brand-700);}
.session-bar .cd-time{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:16px;font-weight:800;color:var(--brand-700);letter-spacing:1px;
}
.session-bar .session-tip{font-size:12.5px;color:var(--ink-3);margin-left:auto;}

/* ---------- checklist ---------- */
.check-wrap{
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:26px;align-items:start;
}
.checklist{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:8px 6px;box-shadow:var(--shadow-sm);}
.check-item{
  display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:var(--radius-sm);
  cursor:pointer;transition:background .18s;font-size:14.5px;color:var(--ink-2);
}
.check-item:hover{background:#f2f7fe;}
.check-item + .check-item{border-top:1px dashed var(--line);}
.check-item input{
  appearance:none;-webkit-appearance:none;width:20px;height:20px;flex:0 0 20px;margin-top:2px;
  border:1.6px solid #b9cbe2;border-radius:6px;background:#fff;cursor:pointer;position:relative;
  transition:background .18s,border-color .18s;
}
.check-item input:checked{background:linear-gradient(135deg,var(--brand-500),var(--brand-700));border-color:var(--brand-700);}
.check-item input:checked::after{
  content:"";position:absolute;left:6px;top:2px;width:6px;height:11px;
  border:solid #fff;border-width:0 2px 2px 0;transform:rotate(42deg);
}
.check-item input:focus-visible{outline:3px solid rgba(75,143,216,.45);outline-offset:2px;}
.check-item span{line-height:1.7;}
.check-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);position:sticky;top:96px;
}
.check-panel h3{font-size:16.5px;margin-bottom:12px;}
.progress-track{height:12px;border-radius:999px;background:#e8eef8;overflow:hidden;margin:14px 0 12px;}
.progress-fill{
  height:100%;width:0%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand-300),var(--brand-700));
  transition:width .35s ease;
}
.check-count{font-size:22px;font-weight:800;color:var(--brand-700);}
.check-count small{font-size:13px;color:var(--ink-3);font-weight:600;margin-left:4px;}
.check-result{font-size:13.8px;color:var(--ink-2);margin:4px 0 0;min-height:72px;line-height:1.8;}

/* ---------- compare table ---------- */
.compare-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.compare-table{width:100%;border-collapse:collapse;font-size:14.4px;}
.compare-table th,.compare-table td{padding:15px 18px;text-align:left;vertical-align:top;}
.compare-table thead th{
  background:#eef3fa;color:var(--brand-700);font-weight:800;font-size:14px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare-table tbody td{border-bottom:1px solid var(--line);color:var(--ink-2);line-height:1.75;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:hover td{background:#f7fafe;}
.compare-table td:first-child{font-weight:700;color:var(--ink);width:22%;}
.compare-table .good{color:#1c7a52;font-weight:700;}
.compare-table .bad{color:var(--danger);font-weight:700;}

/* ---------- channel ---------- */
.channel-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:linear-gradient(120deg,#ffffff,#f2f8ff);
  border:1px solid #d5e4f6;border-radius:var(--radius-lg);
  padding:28px 30px;box-shadow:var(--shadow-sm);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-300);}
.channel-card h3{font-size:19px;margin-bottom:8px;}
.channel-card p{font-size:14.2px;color:var(--ink-2);margin:0;max-width:720px;}
.channel-arrow{
  flex-shrink:0;display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  box-shadow:0 10px 22px rgba(29,95,174,.24);
  transition:transform .2s,box-shadow .2s;
}
.channel-card:hover .channel-arrow{transform:translateX(4px);}

/* ---------- cms news ---------- */
.cms-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:26px;align-items:start;}
.news-list{display:grid;gap:16px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.news-card h3{font-size:16.5px;margin-bottom:9px;line-height:1.6;word-break:normal;overflow-wrap:anywhere;}
.news-card h3 a{transition:color .18s;}
.news-card h3 a:hover{color:var(--brand-500);}
.news-card p{font-size:14px;color:var(--ink-2);margin:0 0 12px;line-height:1.8;}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--ink-3);}
.news-meta span{
  padding:3px 10px;border-radius:999px;background:#eef3fa;color:var(--brand-700);font-weight:700;
}
.cms-side{display:grid;gap:16px;position:sticky;top:96px;}
.side-box{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-box h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-list{display:grid;gap:12px;}
.side-list li{font-size:13.8px;color:var(--ink-2);line-height:1.75;padding-left:14px;position:relative;}
.side-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-300);
}
.side-news{display:grid;gap:12px;}
.side-news a{font-size:14px;color:var(--ink-2);line-height:1.7;transition:color .18s;display:block;}
.side-news a:hover{color:var(--brand-500);}
.more-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:700;color:var(--brand-500);
  padding:9px 18px;border-radius:999px;border:1px solid #cfe0f5;background:#f6faff;
  transition:background .2s,color .2s,transform .2s;
}
.more-link:hover{background:var(--brand-500);color:#fff;transform:translateX(3px);border-color:var(--brand-500);}
.cms-empty{
  background:var(--surface);border:1px dashed #c8d9ee;border-radius:var(--radius);
  padding:30px 24px;text-align:center;font-size:14.5px;color:var(--ink-2);
}
.cms-empty span{display:block;font-size:13px;color:var(--ink-3);margin-top:6px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:4px 20px;box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#cfe0f5;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 26px 16px 0;position:relative;
  font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.65;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-500);transition:transform .2s;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:focus-visible{outline:3px solid rgba(75,143,216,.45);outline-offset:4px;border-radius:6px;}
.faq-body{font-size:14.4px;color:var(--ink-2);line-height:1.85;padding:0 0 18px;}

/* ---------- notice / closing ---------- */
.notice-card{
  border-radius:var(--radius-lg);padding:32px 34px;
  background:linear-gradient(130deg,#fff8ea,#fdfcf8);
  border:1px solid #f2ddb4;box-shadow:var(--shadow-sm);
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between;
}
.notice-card h2{font-size:20px;margin-bottom:10px;color:#5a3f10;}
.notice-card p{font-size:14.2px;color:#7a6029;margin:0;max-width:760px;line-height:1.85;}
.notice-card .btn-main{box-shadow:0 14px 28px rgba(224,169,75,.28);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:10px;background:linear-gradient(160deg,#0a1e3a,#0d2748);
  color:#b9cbe2;padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));gap:34px;}
.footer-brand .brand-name{color:#fff;font-size:18px;}
.footer-brand p{font-size:13.6px;color:#9db6d3;line-height:1.85;margin:14px 0 0;max-width:420px;}
.footer-col h3{font-size:14.5px;color:#fff;margin-bottom:14px;letter-spacing:.6px;}
.footer-col a{display:block;font-size:13.8px;color:#a8c0db;padding:5px 0;transition:color .18s,transform .18s;}
.footer-col a:hover{color:#f2c576;transform:translateX(3px);}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.6px;color:#8fa9c7;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-row{flex-wrap:wrap;padding:12px 0;gap:12px;min-height:auto;}
  .nav-search{order:3;flex-basis:100%;max-width:none;}
  .nav-links{margin-left:auto;order:2;overflow-x:auto;}
  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr));}
  .check-wrap{grid-template-columns:minmax(0,1fr);}
  .check-panel{position:static;}
  .cms-layout{grid-template-columns:minmax(0,1fr);}
  .cms-side{position:static;}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .dl-grid{grid-template-columns:minmax(0,1fr);}
  .dl-card{padding:28px 22px 24px;}
  .channel-card{flex-direction:column;align-items:flex-start;gap:18px;padding:24px 22px;}
  .notice-card{padding:26px 22px;}
  .session-bar .session-tip{margin-left:0;flex-basis:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .site-container{padding:0 16px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr);}
  .timeline{grid-template-columns:minmax(0,1fr);}
  .calc-row{grid-template-columns:.8fr 1fr 1.3fr;font-size:12.5px;padding:10px 11px;}
  .hero-btns .btn-main,.hero-btns .btn-ghost{width:100%;}
  .brand-name{font-size:15.5px;}
  .brand-sub{font-size:10.5px;}
  .nav-links a{padding:8px 12px;font-size:13.6px;}
  .compare-table th,.compare-table td{padding:12px 12px;font-size:13.4px;}
  .compare-table thead th{font-size:13px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0a1e3a;
  --brand-800:#0f2c53;
  --brand-700:#123a6b;
  --brand-500:#1d5fae;
  --brand-300:#4b8fd8;
  --gold:#e0a94b;
  --gold-soft:#f7e7c6;
  --danger:#d6453d;
  --ink:#16202f;
  --ink-2:#46536a;
  --ink-3:#6b7891;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(16,38,71,.06);
  --shadow:0 14px 34px rgba(12,33,64,.10);
  --shadow-lg:0 26px 60px rgba(9,26,52,.18);
  --shell:1180px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:15.5px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 12px;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);line-height:1.4;}
button{font:inherit;}
.site-container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,38,71,.02);
}
.nav-row{display:flex;align-items:center;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand-300),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;
  box-shadow:0 10px 20px rgba(29,95,174,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.6px;}
.brand-sub{font-size:11.5px;color:var(--ink-3);letter-spacing:.3px;}
.nav-search{position:relative;flex:1 1 auto;min-width:0;max-width:430px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#f6f9fd;padding:0 46px 0 18px;font-size:14px;color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input:focus{
  outline:none;border-color:var(--brand-300);background:#fff;
  box-shadow:0 0 0 4px rgba(29,95,174,.12);
}
.nav-search .search-icon{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);
  color:var(--ink-3);font-size:14px;pointer-events:none;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-shrink:0;}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:14.5px;color:var(--ink-2);
  transition:background .2s,color .2s;white-space:nowrap;
}
.nav-links a:hover{background:#eef4fd;color:var(--brand-700);}
.nav-links a.active{
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;box-shadow:0 8px 18px rgba(29,95,174,.24);
}
.nav-links a.nav-dl{
  background:linear-gradient(135deg,#f0b857,var(--gold));
  color:#3a2703;font-weight:700;
  box-shadow:0 8px 18px rgba(224,169,75,.28);
}
.nav-links a.nav-dl:hover{background:linear-gradient(135deg,#e8ac3f,#cf9a3a);color:#2c1d02;}
.nav-links a:focus-visible{outline:3px solid rgba(75,143,216,.5);outline-offset:2px;}

/* ---------- hero (category) ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  padding:56px 0 66px;
  background:
    radial-gradient(900px 420px at 8% -20%,rgba(75,143,216,.45),transparent 62%),
    radial-gradient(700px 380px at 96% 10%,rgba(224,169,75,.22),transparent 65%),
    linear-gradient(158deg,#091b33 0%,#123a6b 56%,#0c2a4e 100%);
}
.hero::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;
  border-radius:50%;background:rgba(75,143,216,.16);filter:blur(10px);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:46px;align-items:center;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#9fbcdd;margin-bottom:16px;flex-wrap:wrap;}
.crumb a{color:#c6dcf5;transition:color .2s;}
.crumb a:hover{color:#fff;}
.crumb i{font-size:10px;color:#7f9dbd;}
.hero h1{
  font-size:clamp(24px,3vw,36px);
  line-height:1.36;margin:14px 0 16px;color:#fff;letter-spacing:.3px;
}
.hero .lead{font-size:15.5px;color:#c9dcf3;line-height:1.9;max-width:620px;margin:0;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:1px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#dbe9fb;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
}
.btn-main{
  background:linear-gradient(135deg,#f2bd60,var(--gold));
  color:#38260a;box-shadow:0 14px 28px rgba(224,169,75,.30);
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(224,169,75,.38);color:#2b1c04;}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#eaf3ff;}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);color:#fff;}
.btn-main:focus-visible,.btn-ghost:focus-visible{outline:3px solid rgba(255,255,255,.65);outline-offset:3px;}
.hero-panel{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius-lg);
  padding:22px 22px 18px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(8px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px;}
.panel-head strong{font-size:15px;color:#fff;}
.panel-head span{font-size:11.5px;color:#f6d999;background:rgba(224,169,75,.16);border:1px solid rgba(224,169,75,.4);padding:3px 10px;border-radius:999px;}
.panel-note{font-size:12.5px;color:#9fbcdd;margin:0 0 14px;}
.calc-row{
  display:grid;grid-template-columns:1fr 1fr;gap:8px;
  padding:11px 4px;font-size:13.5px;color:#dbe9fb;
  border-bottom:1px dashed rgba(255,255,255,.14);
}
.calc-row:last-child{border-bottom:none;}
.calc-row .k{color:#a9c6e6;}
.calc-row .v{text-align:right;font-weight:700;}
.calc-row .neg{color:#ffb3a7;font-weight:700;}

/* ---------- section base ---------- */
.section{padding:60px 0;}
.section--alt{background:var(--surface);}
.section--soft{background:#eef3fa;}
.section-head{max-width:800px;margin-bottom:32px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.6px;
  color:var(--brand-500);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:14.8px;margin:0;}

/* ---------- download ---------- */
.dl-band{
  background:linear-gradient(135deg,#0f2c53,#123a6b 55%,#0a1e3a);
  border-radius:var(--radius-lg);
  padding:34px 34px 30px;
  color:#fff;box-shadow:var(--shadow);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:28px;align-items:center;
}
.dl-band h2{color:#fff;font-size:22px;margin-bottom:10px;}
.dl-band p{color:#b9d0ea;font-size:14px;margin:0;}
.dl-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:16px 10px;border-radius:var(--radius);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);
  color:#eaf3ff;font-size:14px;font-weight:700;text-align:center;
  transition:transform .2s,background .2s,border-color .2s,box-shadow .2s;
}
.dl-btn i{font-size:19px;color:#f3c877;}
.dl-btn span{font-size:11.5px;font-weight:400;color:#9fbcdd;}
.dl-btn:hover{transform:translateY(-3px);background:rgba(255,255,255,.16);border-color:rgba(224,169,75,.6);box-shadow:0 16px 30px rgba(0,0,0,.24);color:#fff;}
.dl-btn:focus-visible{outline:3px solid rgba(224,169,75,.7);outline-offset:3px;}

/* ---------- risk cards ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.risk-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .22s,box-shadow .22s,border-color .22s;
  position:relative;overflow:hidden;
}
.risk-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--brand-300),var(--brand-700));
  opacity:.85;
}
.risk-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.risk-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e8f1fd,#d6e6fa);color:var(--brand-700);
  font-size:18px;margin-bottom:14px;
}
.risk-card h3{font-size:16.5px;margin-bottom:9px;}
.risk-card p{color:var(--ink-2);font-size:14.2px;margin:0;}
.risk-tag{
  display:inline-block;margin-top:14px;font-size:12px;font-weight:700;
  color:#9a6a12;background:var(--gold-soft);border-radius:999px;padding:4px 11px;
}

/* ---------- metric list ---------- */
.metric-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.metric-row{
  display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:22px;padding:20px 26px;border-bottom:1px solid var(--line);
  transition:background .2s;
}
.metric-row:last-child{border-bottom:none;}
.metric-row:hover{background:#f7fafe;}
.metric-row .m-name{font-weight:800;font-size:15px;color:var(--brand-800);display:flex;align-items:center;gap:9px;}
.metric-row .m-name i{color:var(--brand-300);font-size:14px;}
.metric-row .m-desc{color:var(--ink-2);font-size:14.2px;margin:0;}
.metric-row .m-desc em{font-style:normal;color:var(--danger);font-weight:700;}

/* ---------- scenario ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand-500);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.scene-card h3{font-size:16px;margin-bottom:8px;}
.scene-card p{color:var(--ink-2);font-size:14.2px;margin:0;}
.scene-card .scene-label{font-size:12px;font-weight:700;color:var(--brand-500);letter-spacing:1px;display:block;margin-bottom:8px;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 20px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.step-no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-800));
  color:#fff;font-weight:800;font-size:14px;margin-bottom:12px;
  box-shadow:0 8px 16px rgba(29,95,174,.24);
}
.step h3{font-size:15.5px;margin-bottom:8px;}
.step p{color:var(--ink-2);font-size:14px;margin:0;}

/* ---------- myth ---------- */
.myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.myth{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:0;overflow:hidden;box-shadow:var(--shadow-sm);min-width:0;
}
.myth-top{background:#fdf1ef;padding:16px 22px;border-bottom:1px solid #f6ddd9;}
.myth-top span{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:800;color:var(--danger);letter-spacing:.5px;}
.myth-top p{margin:8px 0 0;font-size:14.6px;color:#7a2c26;font-weight:700;}
.myth-bottom{padding:16px 22px;}
.myth-bottom span{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:800;color:#1c7a4a;letter-spacing:.5px;}
.myth-bottom p{margin:8px 0 0;font-size:14.2px;color:var(--ink-2);}

/* ---------- cost strip ---------- */
.cost-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-sm);
}
.cost-item{min-width:0;}
.cost-item .num{font-size:26px;font-weight:800;color:var(--brand-700);line-height:1.2;}
.cost-item h3{font-size:15px;margin:8px 0 6px;}
.cost-item p{font-size:14px;color:var(--ink-2);margin:0;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#cfe0f5;box-shadow:var(--shadow);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;
  font-size:15.2px;font-weight:700;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:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--brand-300);transition:transform .25s;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item summary:focus-visible{outline:3px solid rgba(75,143,216,.45);outline-offset:-3px;}
.faq-body{padding:0 22px 18px;color:var(--ink-2);font-size:14.4px;}

/* ---------- updates list ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-sm);min-width:0;display:flex;flex-direction:column;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f5;}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--ink-3);margin-bottom:10px;}
.post-meta .chip{
  background:#eaf2fd;color:var(--brand-700);font-weight:700;
  border-radius:999px;padding:3px 10px;font-size:11.5px;
}
.post-card h3{font-size:16px;line-height:1.55;margin-bottom:10px;}
.post-card h3 a{transition:color .2s;}
.post-card h3 a:hover{color:var(--brand-500);}
.post-card p{font-size:14px;color:var(--ink-2);margin:0 0 16px;}
.post-more{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--brand-500);display:inline-flex;align-items:center;gap:7px;transition:gap .2s,color .2s;}
.post-more:hover{gap:12px;color:var(--brand-700);}
.empty-note{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);
  padding:26px;text-align:center;color:var(--ink-3);font-size:14px;
}

/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(135deg,#0f2c53,#123a6b 58%,#0a1e3a);
  border-radius:var(--radius-lg);padding:38px 36px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);
  gap:26px;align-items:center;box-shadow:var(--shadow);
}
.cta-band h2{color:#fff;font-size:23px;margin-bottom:10px;}
.cta-band p{color:#b9d0ea;font-size:14.4px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#c7d6ea;padding:54px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;}
.footer-brand .brand-name{display:block;color:#fff;font-size:18px;font-weight:800;margin-bottom:12px;letter-spacing:.5px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#a9bcd6;margin:0;max-width:430px;}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.5px;}
.footer-col a{display:block;font-size:14px;color:#a9bcd6;padding:5px 0;transition:color .2s,transform .2s;}
.footer-col a:hover{color:var(--gold);transform:translateX(3px);}
.footer-bottom{
  margin-top:36px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#8fa5c2;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .hero{padding:44px 0 52px;}
  .risk-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-band{grid-template-columns:minmax(0,1fr);}
  .cta-band{grid-template-columns:minmax(0,1fr);}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cost-strip{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:768px){
  body{font-size:15px;}
  .nav-row{flex-wrap:wrap;gap:12px;padding:12px 0;min-height:auto;}
  .brand-sub{display:none;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;}
  .nav-links{order:2;margin-left:0;flex:1 1 100%;overflow-x:auto;padding-bottom:2px;}
  .nav-links a{padding:8px 13px;font-size:14px;}
  .section{padding:46px 0;}
  .risk-grid{grid-template-columns:minmax(0,1fr);}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .myth-grid{grid-template-columns:minmax(0,1fr);}
  .post-grid{grid-template-columns:minmax(0,1fr);}
  .steps{grid-template-columns:minmax(0,1fr);}
  .cost-strip{grid-template-columns:minmax(0,1fr);gap:16px;}
  .metric-row{grid-template-columns:minmax(0,1fr);gap:8px;padding:18px 20px;}
  .dl-band{padding:26px 22px;}
  .dl-actions{grid-template-columns:minmax(0,1fr);}
  .dl-btn{flex-direction:row;gap:10px;padding:14px 14px;}
  .dl-btn span{margin-left:auto;}
  .cta-band{padding:28px 22px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .hero h1{font-size:22px;}
  .hero .lead{font-size:14.6px;}
  .hero-btns .btn-main,.hero-btns .btn-ghost{width:100%;}
  .btn-main,.btn-ghost{padding:12px 18px;font-size:14.5px;}
  .hero-panel{padding:18px 16px 14px;}
  .calc-row{font-size:13px;}
  .risk-card,.post-card,.step{padding:20px 18px;}
}

/* roulang page: article */
:root{
  --brand-900:#0a1e3a;
  --brand-800:#0f2c53;
  --brand-700:#123a6b;
  --brand-500:#1d5fae;
  --brand-300:#4b8fd8;
  --gold:#e0a94b;
  --gold-soft:#f7e7c6;
  --danger:#d6453d;
  --ink:#16202f;
  --ink-2:#46536a;
  --ink-3:#6b7891;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --line:#e2e8f2;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(16,38,71,.06);
  --shadow:0 14px 34px rgba(12,33,64,.10);
  --shadow-lg:0 26px 60px rgba(9,26,52,.18);
  --shell:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:15.5px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;}
h1,h2,h3,h4,p{margin:0;}
.site-container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,38,71,.02);
}
.nav-row{display:flex;align-items:center;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand-300),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;
  box-shadow:0 10px 20px rgba(29,95,174,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.6px;}
.brand-sub{font-size:11.5px;color:var(--ink-3);letter-spacing:.3px;}
.nav-search{position:relative;flex:1 1 auto;min-width:0;max-width:430px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#f6f9fd;padding:0 46px 0 18px;font-size:14px;color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input:focus{
  outline:none;border-color:var(--brand-300);background:#fff;
  box-shadow:0 0 0 4px rgba(29,95,174,.12);
}
.nav-search .search-icon{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);
  color:var(--ink-3);font-size:14px;pointer-events:none;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-shrink:0;}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:14.5px;color:var(--ink-2);
  transition:background .2s,color .2s;white-space:nowrap;
}
.nav-links a:hover{background:#eef4fd;color:var(--brand-700);}
.nav-links a.active{
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;box-shadow:0 8px 18px rgba(29,95,174,.24);
}
.nav-links a.nav-dl{
  background:linear-gradient(135deg,#f0b857,var(--gold));
  color:#3a2703;font-weight:700;
  box-shadow:0 8px 18px rgba(224,169,75,.28);
}
.nav-links a.nav-dl:hover{background:linear-gradient(135deg,#e8ac3f,#cf9a3a);color:#2c1d02;}
.nav-links a:focus-visible{outline:3px solid rgba(75,143,216,.5);outline-offset:2px;}
/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:42px 0 54px;
  background:
    radial-gradient(860px 400px at 6% -25%,rgba(75,143,216,.45),transparent 62%),
    radial-gradient(680px 360px at 96% 8%,rgba(224,169,75,.20),transparent 66%),
    linear-gradient(158deg,#091b33 0%,#123a6b 56%,#0c2a4e 100%);
}
.article-hero::after{
  content:"";position:absolute;left:-130px;bottom:-190px;width:420px;height:420px;
  border-radius:50%;background:rgba(75,143,216,.16);pointer-events:none;
}
.crumb{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:#9fbcdd;
}
.crumb a{color:#cfe1f6;transition:color .2s;}
.crumb a:hover{color:#fff;}
.crumb .sep{color:#6787ab;}
.meta-tags{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 14px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);color:#d7e6f8;
}
.tag-gold{background:rgba(224,169,75,.18);border-color:rgba(224,169,75,.42);color:#f6d999;font-weight:700;}
.article-hero h1{
  position:relative;z-index:2;
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.45;letter-spacing:.3px;color:#fff;max-width:920px;
}
.article-abstract{
  position:relative;z-index:2;
  margin-top:16px;max-width:840px;
  font-size:15px;line-height:1.9;color:#c4d7ee;
}
/* ---------- layout ---------- */
.site-main{padding-bottom:8px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:30px;align-items:start;
  padding-top:38px;padding-bottom:10px;
}
.article-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:32px 34px;min-width:0;
}
.article-content{font-size:16px;color:#26303f;min-width:0;overflow-wrap:break-word;}
.article-content h2{
  font-size:21px;line-height:1.55;color:var(--brand-900);
  margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand-500);
}
.article-content h2:first-child{margin-top:0;}
.article-content h3{font-size:17.5px;line-height:1.6;color:var(--brand-800);margin:24px 0 10px;}
.article-content h4{font-size:16px;color:var(--brand-800);margin:20px 0 8px;}
.article-content p{margin:0 0 16px;line-height:1.95;}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:1.35em;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin:0 0 8px;line-height:1.9;}
.article-content a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--brand-700);}
.article-content img{border-radius:var(--radius);margin:18px 0;}
.article-content blockquote{
  margin:20px 0;padding:14px 18px;background:#f3f7fd;
  border-left:4px solid var(--brand-300);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-2);
}
.article-content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-content th{background:#f1f6fd;color:var(--brand-800);font-weight:700;}
.article-content code{background:#eef4fd;padding:2px 6px;border-radius:6px;font-size:13.5px;color:var(--brand-700);}
.article-content pre{background:#0f2c53;color:#dbe9fb;padding:16px 18px;border-radius:var(--radius);overflow-x:auto;margin:18px 0;}
.article-content pre code{background:transparent;color:inherit;padding:0;}
.notice{
  display:flex;gap:13px;align-items:flex-start;
  margin-top:26px;padding:16px 20px;
  background:#fff7e8;border:1px solid #f0dcb4;border-radius:var(--radius);
  font-size:14px;line-height:1.85;color:#7a5a1f;
}
.notice i{color:var(--gold);margin-top:3px;}
.article-empty{
  padding:26px 0 10px;text-align:left;
}
.article-empty h2{font-size:20px;color:var(--brand-900);margin-bottom:10px;}
.article-empty p{font-size:15px;color:var(--ink-2);margin-bottom:18px;}
.article-empty .back-home{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));color:#fff;
  box-shadow:0 10px 22px rgba(29,95,174,.24);
}
.article-empty .back-home:hover{color:#fff;transform:translateY(-2px);}
/* ---------- sidebar ---------- */
.article-side{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:18px;min-width:0;
}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
  padding:22px;min-width:0;
}
.side-card h3{
  display:flex;align-items:center;gap:8px;
  font-size:15.5px;color:var(--brand-800);margin-bottom:12px;
}
.side-card h3 i{color:var(--brand-500);font-size:14px;}
.side-card p{font-size:14px;line-height:1.85;color:var(--ink-2);}
.side-list{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.8px;line-height:1.8;color:var(--ink-2);
}
.side-list li i{color:var(--brand-500);font-size:12px;margin-top:5px;flex:0 0 auto;}
.side-card--dark{
  background:linear-gradient(150deg,#0d2444,#123a6b);
  border-color:rgba(255,255,255,.12);color:#cfe0f4;
}
.side-card--dark h3{color:#fff;}
.side-card--dark h3 i{color:var(--gold);}
.side-card--dark p{color:#b7cee8;}
.dl-mini{display:flex;flex-direction:column;gap:9px;margin-top:14px;}
.dl-mini a{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  color:#eaf3ff;font-size:13.8px;font-weight:600;
  transition:background .2s,transform .2s;
}
.dl-mini a:hover{background:rgba(255,255,255,.20);transform:translateY(-1px);color:#fff;}
.dl-mini a i{color:var(--gold);font-size:14px;}
/* ---------- sections ---------- */
.section{padding:56px 0;}
.section--alt{background:var(--surface);}
.section--soft{background:#eef3fa;}
.section-head{max-width:760px;margin-bottom:30px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;
  letter-spacing:2px;color:var(--brand-500);
}
.section-head h2{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.5;color:var(--brand-900);margin:10px 0 12px;
}
.section-head p{font-size:14.8px;line-height:1.9;color:var(--ink-2);}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:22px;min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-300);}
.metric-card .num{font-size:12.5px;font-weight:800;letter-spacing:1.5px;color:var(--gold);}
.metric-card h3{font-size:16px;color:var(--brand-900);margin:8px 0 10px;}
.metric-card p{font-size:13.8px;line-height:1.85;color:var(--ink-2);}
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.risk-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:20px 22px;min-width:0;
  transition:box-shadow .2s,transform .2s;
}
.risk-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.risk-item .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand-300),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;
}
.risk-item h3{font-size:16px;color:var(--brand-900);margin-bottom:6px;}
.risk-item p{font-size:13.8px;line-height:1.85;color:var(--ink-2);}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;font-size:14.5px;line-height:1.85;color:var(--ink-2);min-width:0;
}
.check-list li i{color:var(--brand-500);margin-top:4px;flex:0 0 auto;}
/* ---------- download ---------- */
.dl-panel{
  background:linear-gradient(150deg,#0b2342,#123a6b 62%,#0c2a4e);
  border-radius:var(--radius-lg);padding:34px 34px 30px;
  color:#fff;box-shadow:var(--shadow);
}
.dl-panel h2{font-size:clamp(20px,2.2vw,25px);line-height:1.5;margin-bottom:10px;}
.dl-panel .dl-desc{font-size:14.8px;line-height:1.9;color:#c3d7ee;max-width:760px;margin-bottom:24px;}
.dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
.dl-btn{
  display:flex;align-items:center;gap:13px;
  padding:16px 18px;border-radius:var(--radius);
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.22);
  color:#eef5ff;min-width:0;
  transition:background .2s,transform .2s,border-color .2s;
}
.dl-btn:hover{background:rgba(255,255,255,.17);transform:translateY(-3px);border-color:rgba(224,169,75,.6);color:#fff;}
.dl-btn i{font-size:20px;color:var(--gold);flex:0 0 auto;}
.dl-btn strong{display:block;font-size:15px;line-height:1.4;}
.dl-btn span{display:block;font-size:12.5px;color:#b4cbe4;line-height:1.6;}
.dl-note{margin-top:18px;font-size:13px;color:#9db8d6;line-height:1.8;}
/* ---------- faq ---------- */
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;min-width:0;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:15.2px;font-weight:700;color:var(--brand-900);line-height:1.6;
  transition:background .2s,color .2s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:18px;color:var(--brand-500);font-weight:700;flex:0 0 auto;}
.faq-item[open] summary{background:#f4f8fe;}
.faq-item[open] summary::after{content:"–";}
.faq-item summary:hover{background:#f4f8fe;}
.faq-item summary:focus-visible{outline:3px solid rgba(75,143,216,.45);outline-offset:-3px;}
.faq-item p{padding:0 22px 18px;font-size:14.2px;line-height:1.9;color:var(--ink-2);}
/* ---------- cta ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:28px 32px;
}
.cta-band h2{font-size:19px;color:var(--brand-900);margin-bottom:8px;line-height:1.5;}
.cta-band p{font-size:14.2px;color:var(--ink-2);line-height:1.85;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:14.5px;font-weight:700;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;box-shadow:0 12px 24px rgba(29,95,174,.24);
  transition:transform .2s,box-shadow .2s;
}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(29,95,174,.32);color:#fff;}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:14.5px;font-weight:700;
  background:#fff;border:1px solid var(--line);color:var(--brand-700);
  transition:border-color .2s,color .2s,transform .2s,background .2s;
}
.btn-line:hover{border-color:var(--brand-300);background:#f4f8fe;transform:translateY(-2px);color:var(--brand-800);}
.btn-solid:focus-visible,.btn-line:focus-visible{outline:3px solid rgba(75,143,216,.45);outline-offset:3px;}
/* ---------- footer ---------- */
.site-footer{background:#08182c;color:#a8bfd9;padding:54px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;}
.footer-brand .brand-name{display:block;font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#93aecb;max-width:430px;}
.footer-col h3{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-col a{
  display:block;font-size:14px;color:#93aecb;margin-bottom:10px;
  transition:color .2s,transform .2s;
}
.footer-col a:hover{color:var(--gold);transform:translateX(2px);}
.footer-bottom{
  margin-top:34px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7d97b5;line-height:1.8;
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px;}
  .article-side{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .nav-row{flex-wrap:wrap;padding:12px 0;gap:14px;min-height:0;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;}
}
@media (max-width:768px){
  .risk-grid{grid-template-columns:minmax(0,1fr);}
  .check-list{grid-template-columns:minmax(0,1fr);}
  .faq-list{grid-template-columns:minmax(0,1fr);}
  .dl-btns{grid-template-columns:minmax(0,1fr);}
  .article-card{padding:24px 20px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .section{padding:44px 0;}
  .dl-panel{padding:26px 22px 24px;}
  .cta-band{padding:24px 22px;}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:520px){
  .brand-sub{display:none;}
  .nav-links{width:100%;justify-content:flex-start;overflow-x:auto;padding-bottom:2px;}
  .nav-links a{padding:8px 13px;font-size:14px;}
  .metric-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .article-hero{padding:30px 0 40px;}
  .article-content{font-size:15.5px;}
  .article-content h2{font-size:19px;}
  .article-abstract{font-size:14.2px;}
  .cta-actions{width:100%;}
  .btn-solid,.btn-line{flex:1 1 auto;justify-content:center;}
}