:root{--bg:#07101f;--bg-soft:#0e1c33;--card:#11233f;--text:#e8eef8;--muted:#aebcd3;--primary:#2f80ff;--primary-soft:#78a9ff;--line:#1d3359}*{box-sizing:border-box}html,body{margin:0;padding:0}html{scrollbar-gutter:stable}body{color:var(--text);background:linear-gradient(#061024 0%,#091a31 55%,#08162b 100%);font-family:PingFang SC,Microsoft YaHei,Arial,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}.container{width:min(1120px,100% - 40px);margin:0 auto}.topbar{z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);background:#061024c7;position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:18px;min-height:64px;display:flex}.logo{white-space:nowrap;font-weight:700}.nav{flex-wrap:wrap;align-items:center;gap:14px;display:flex}@media (max-width:760px){.topbar-inner{gap:12px}.nav{scrollbar-width:none;flex-wrap:nowrap;max-width:100%;padding-bottom:2px;overflow-x:auto}.nav::-webkit-scrollbar{display:none}}.nav-link{color:var(--muted);font-size:14px}.nav-link.active,.nav-link:hover{color:var(--text)}.lang-switch{border-left:1px solid var(--line);gap:6px;margin-left:10px;padding-left:10px;display:flex}.btn{border-radius:10px;padding:10px 16px;font-size:14px;font-weight:600;display:inline-block}.btn-primary{background:var(--primary);color:#fff}.btn-ghost{border:1px solid var(--line);color:var(--text);background:#11233f99}.btn-ghost:hover{color:var(--primary-soft);border-color:#78a9ff8c}.hero{padding:62px 0 24px}.hero-grid{grid-template-columns:1.1fr .9fr;gap:16px;display:grid}.tag{color:var(--primary-soft);background:#2f80ff29;border:1px solid #78a9ff59;border-radius:999px;padding:2px 10px;font-size:12px;display:inline-block}h1{margin:12px 0;font-size:40px;line-height:1.2}h2{margin:0 0 10px;font-size:28px}h3{margin:0 0 8px;font-size:18px}.sub{color:var(--muted);margin:0 0 14px}section{padding:36px 0}.section-tight{padding:20px 0 28px}.grid-3{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.grid-2{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.card{border:1px solid var(--line);background:#11233fb8;border-radius:14px;padding:18px}.doc-article img{border-radius:8px;width:auto;max-width:100%;height:auto;margin:12px auto;display:block}.doc-article figure{margin:12px 0}.doc-article figure img{margin:0 auto}.doc-article p img,.doc-article li img,.doc-article td img,.doc-article th img{vertical-align:middle;width:auto;max-width:96px;height:auto;max-height:48px;margin:0 4px;display:inline-block}.card-media{border:1px solid var(--line);background:#09182dd9;border-radius:10px;margin:-4px -4px 14px;overflow:hidden}.card-cover-img{aspect-ratio:16/9;object-fit:cover;width:100%;height:auto;display:block}.hero-visual{border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 12px 40px #00000059}.footer{border-top:1px solid var(--line);color:var(--muted);padding:20px 0 28px}ul{color:var(--muted);margin:10px 0 0;padding-left:18px}@media (max-width:920px){.hero-grid,.grid-2,.grid-3{grid-template-columns:1fr}h1{font-size:30px}}