:root{
  --bg:#f6f7fb;
  --panel:#ffffff;
  --ink:#172033;
  --muted:#667085;
  --line:#e6e9f0;
  --brand:#254edb;
  --brand-dark:#16348f;
  --accent:#fff2ca;
  --soft:#edf3ff;
  --success:#16845b;
  --shadow:0 16px 44px rgba(21,31,64,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,92vw);margin:0 auto}
.site-header{background:linear-gradient(135deg,#0d1a44 0%,#2038a8 52%,#406bff 100%);color:#fff;position:relative;overflow:hidden}
.site-header::after{content:"";position:absolute;inset:auto -12% -34% auto;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.13);filter:blur(4px)}
.topbar{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:22px 0 14px;gap:18px}
.logo-wrap{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.4px}
.logo-mark{width:48px;height:48px;border-radius:14px;background:#fff;color:var(--brand);display:grid;place-items:center;font-size:24px;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.logo-text strong{display:block;font-size:21px;line-height:1.1}.logo-text span{display:block;color:#d9e3ff;font-size:13px;margin-top:2px}
.nav{position:relative;z-index:2;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.nav a{padding:9px 13px;border:1px solid rgba(255,255,255,.18);border-radius:999px;color:#eef3ff;background:rgba(255,255,255,.08)}.nav a:hover{background:#fff;color:var(--brand-dark)}
.search-shell{position:relative;z-index:2;padding:0 0 22px}.search-box{display:flex;gap:10px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:18px;padding:10px;backdrop-filter:blur(8px)}.search-box input{flex:1;border:none;border-radius:12px;padding:13px 15px;font-size:15px}.search-box button,.btn{border:none;border-radius:12px;padding:12px 18px;background:var(--accent);color:#18264d;font-weight:700;cursor:pointer}.search-hint{min-height:24px;color:#fff7d7;margin:8px 4px 0;font-size:14px}
.hero{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;padding:38px 0 58px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:7px 12px;border-radius:999px;color:#fff}.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.08;margin:18px 0}.hero p{color:#e8edff;font-size:18px;margin:0 0 22px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.btn.primary{background:#fff;color:var(--brand-dark)}.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
.hero-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:28px;padding:18px;box-shadow:var(--shadow);backdrop-filter:blur(10px)}.hero-card figure{margin:0}.hero-card img{border-radius:20px}.hero-card figcaption{color:#edf2ff;font-size:14px;margin-top:12px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}.stat{background:#fff;color:var(--ink);border-radius:18px;padding:14px}.stat strong{display:block;font-size:22px}.stat span{color:var(--muted);font-size:13px}
main{padding:34px 0 52px}.grid{display:grid;gap:22px}.two-col{grid-template-columns:2fr 1fr}.three-col{grid-template-columns:repeat(3,1fr)}.four-col{grid-template-columns:repeat(4,1fr)}
.section{margin:28px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:16px}.section-head h2{font-size:28px;margin:0}.section-head p{margin:4px 0 0;color:var(--muted)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 24px rgba(25,33,61,.05)}.card h3{margin:0 0 8px;font-size:20px}.card p{color:#4c5568;margin:0 0 12px}.meta{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px}.pill,.tag{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--soft);color:var(--brand-dark);font-size:13px}.tag{margin:3px 4px 3px 0}.article-card{padding:0;overflow:hidden}.article-card .body{padding:18px 20px 20px}.article-card img{height:205px;width:100%;object-fit:cover}.headline-card{min-height:100%;display:flex;flex-direction:column;justify-content:space-between}.headline-card .badge{align-self:flex-start;background:#fff1bd;color:#705300;border-radius:999px;padding:5px 10px;font-size:13px}.headline-card h2{font-size:34px;line-height:1.22;margin:16px 0 10px}.headline-card p{font-size:17px}.list{display:grid;gap:12px}.list-item{display:flex;gap:12px;align-items:flex-start;padding:13px;border:1px solid var(--line);border-radius:16px;background:#fff}.num{width:30px;height:30px;border-radius:50%;background:var(--soft);color:var(--brand);display:grid;place-items:center;font-weight:800;flex:0 0 30px}
.video-card{position:relative;overflow:hidden;border-radius:22px;background:#101828;color:#fff;min-height:260px}.video-card img{width:100%;height:260px;object-fit:cover;opacity:.86;transition:transform .35s ease,opacity .35s ease}.video-card:hover img{transform:scale(1.04);opacity:.68}.play{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:.25s ease}.video-card:hover .play{opacity:1}.play span{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--brand);font-size:30px;box-shadow:0 10px 35px rgba(0,0,0,.3)}.video-info{position:absolute;left:18px;right:18px;bottom:16px}.video-info h3{margin:0 0 6px}.video-info p{margin:0;color:#e6eaf5}.video-metrics{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px;font-size:13px}.video-metrics span{background:rgba(255,255,255,.16);padding:3px 8px;border-radius:999px}
.author{display:flex;gap:14px;align-items:flex-start}.avatar{width:56px;height:56px;border-radius:18px;object-fit:cover;flex:0 0 56px}.faq-item{border-bottom:1px solid var(--line);padding:16px 0}.faq-item:last-child{border-bottom:none}.faq-item summary{font-weight:800;cursor:pointer}.faq-item p{margin:8px 0 0;color:#4f5b72}.comment{display:flex;gap:14px;align-items:flex-start}.quote-mark{font-size:30px;line-height:1;color:var(--brand)}.breadcrumb{font-size:14px;color:var(--muted);margin:0 0 18px}.breadcrumb a{color:var(--brand)}.article-main{background:#fff;border:1px solid var(--line);border-radius:26px;padding:28px;box-shadow:0 12px 28px rgba(25,33,61,.05)}.article-main h1{font-size:clamp(30px,4vw,48px);line-height:1.16;margin:0 0 16px}.article-main h2{margin-top:28px}.article-main p{color:#39445b}.article-hero{border-radius:22px;margin:18px 0}.notice{background:#fff8df;border:1px solid #f5dd8d;border-radius:18px;padding:15px}.domain-chip{font-weight:800;color:var(--brand-dark)}
.table-like{display:grid;gap:10px}.row{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}.row strong{color:#1f2a44}.site-footer{background:#0f172a;color:#dbe4ff;padding:36px 0}.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:22px}.site-footer a{color:#fff}.site-footer p,.site-footer li{color:#aeb9d6}.site-footer ul{margin:8px 0 0;padding-left:18px}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:26px;padding-top:18px;color:#b9c3df;font-size:14px}.json-note{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;background:#0f172a;color:#dbe4ff;border-radius:16px;padding:16px;overflow:auto;max-height:280px}
@media (max-width:900px){.hero,.two-col,.three-col,.four-col,.footer-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.search-box{flex-direction:column}.headline-card h2{font-size:28px}.row{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.section-head{display:block}}
@media (max-width:520px){.container{width:min(94vw,1180px)}.card,.article-main{padding:18px}.stats{grid-template-columns:1fr}.nav a{font-size:14px;padding:8px 10px}.hero{padding-top:18px}.hero-card{padding:12px}.hero-actions .btn{width:100%;text-align:center}}