:root{
  --bg:#0f1724;--text:#ecf2f9;--muted:#a8b6c7;--accent:#ff7a18;--danger:#ff5f5f;--max:1180px;--radius:18px;--shadow:0 16px 40px rgba(0,0,0,.28);
}
*{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",sans-serif;background:linear-gradient(180deg,#0b1220 0%, #101929 32%, #0f1724 100%);color:var(--text);line-height:1.75}
a{color:#ffd891;text-decoration:none} a:hover{color:#fff} img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;backdrop-filter:blur(12px);background:rgba(8,14,24,.82);border-bottom:1px solid rgba(255,255,255,.06)}
.header-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.08rem;color:#fff}
.brand img{width:54px;height:54px;object-fit:contain;border-radius:12px;box-shadow:var(--shadow)}
.main-nav{display:flex;flex-wrap:wrap;gap:18px}.main-nav a{color:#dbe7f3;font-size:.95rem}
.hero{position:relative;overflow:hidden;padding:68px 0 40px}.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 10%, rgba(255,122,24,.18), transparent 32%),radial-gradient(circle at 80% 0%, rgba(0,147,255,.15), transparent 28%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.86rem;color:#ffd891;background:rgba(255,122,24,.12);border:1px solid rgba(255,122,24,.22);padding:8px 12px;border-radius:999px}
.hero h1{font-size:clamp(2rem,4vw,3.6rem);line-height:1.12;margin:18px 0 14px}
.hero p.lead{font-size:1.05rem;color:var(--muted);max-width:58ch;margin:0 0 20px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:22px 0 12px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:12px;font-weight:700;border:1px solid rgba(255,255,255,.09);transition:.2s ease}
.btn.primary{background:linear-gradient(135deg,var(--accent),#ff992c);color:#fff}.btn.secondary{background:rgba(255,255,255,.04);color:#fff}.btn:hover{transform:translateY(-1px)}
.hero-media,.page-header,.card,.topic-card,.post-card,.faq-card,.info-card,.article-shell{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.08);border-radius:22px;box-shadow:var(--shadow)}
.hero-media{padding:14px}.hero-media img,.article-cover img{border-radius:14px}
.section{padding:26px 0}.section h2,.page-header h1,.article-content h1{font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.2;margin:0 0 14px}.section-intro,.page-header p,.article-meta,.muted{color:var(--muted)}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card,.topic-card,.post-card,.faq-card,.info-card{padding:22px}
.card h3,.topic-card h3,.post-card h3,.faq-card h3,.info-card h3{margin:0 0 10px;font-size:1.12rem}
.topic-grid,.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.faq-list,.info-stack{display:grid;gap:16px}
.cta-band{margin:34px 0 10px;background:linear-gradient(135deg, rgba(255,122,24,.18), rgba(0,129,255,.12));border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:28px}
.page-hero{padding:42px 0 10px}.page-header{padding:28px}
.breadcrumbs{font-size:.92rem;color:var(--muted);margin:0 0 12px}.breadcrumbs .sep{opacity:.55;margin:0 8px}
.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start;padding:22px 0 54px}
.article-shell{padding:28px}.article-cover{margin:0 0 20px}.article-content p{margin:0 0 18px;color:#e8eef7}.article-content h2{margin:28px 0 12px;font-size:1.3rem}
.article-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:.95rem;margin:0 0 18px}
.tag{display:inline-block;font-size:.82rem;border:1px solid rgba(255,255,255,.08);color:#ffd891;background:rgba(255,122,24,.12);padding:6px 10px;border-radius:999px}
.sidebar{display:grid;gap:18px}.related-list,.mini-list{display:grid;gap:10px}
.related-list a,.mini-list a{display:block;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);color:#dce7f2}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
.post-nav a{display:block;border:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.03);border-radius:16px;padding:16px;color:#fff}
.post-nav strong{display:block;font-size:.88rem;color:#ffd891;margin-bottom:8px}
.list-page .post-grid{grid-template-columns:repeat(2,1fr)}
.site-footer{padding:34px 0 48px;border-top:1px solid rgba(255,255,255,.06);margin-top:32px;background:rgba(0,0,0,.12)}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px}.footer-title{font-size:1.02rem;font-weight:700;margin:0 0 10px}.footer-nav{display:grid;gap:10px}
.notice{border-left:4px solid var(--danger);padding:14px 16px;background:rgba(255,95,95,.08);border-radius:0 12px 12px 0;color:#ffe4e4}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}.badge{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);color:#d6e3ef;font-size:.9rem}
@media (max-width:1024px){.hero-grid,.content-wrap,.footer-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:repeat(2,1fr)}.topic-grid,.post-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.main-nav{display:none}.hero{padding-top:42px}.card-grid,.topic-grid,.post-grid,.list-page .post-grid,.post-nav{grid-template-columns:1fr}.page-header,.article-shell,.card,.topic-card,.post-card,.faq-card,.info-card{padding:20px}}