:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f8fafc;--surface:#fff;--text:#0f172a;--muted:#475569;--soft:#64748b;--border:#e2e8f0;--blue:#2563eb;--blue-dark:#1d4ed8;--blue-tint:#eff6ff;--success:#047857;--danger:#be123c;background:var(--bg);color:var(--text);font-family:PingFang SC,Microsoft YaHei,Noto Sans CJK SC,-apple-system,BlinkMacSystemFont,sans-serif}*{box-sizing:border-box}html{scroll-behavior:auto}body{min-width:320px;margin:0}button,input{font:inherit}button:not(:disabled),a{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:not-allowed}a{color:inherit}:focus-visible{outline-offset:3px;outline:3px solid #93c5fd}.page-shell{flex-direction:column;min-height:100vh;display:flex}.site-header{z-index:10;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;width:min(1120px,100% - 40px);min-height:68px;margin:auto;display:flex}.brand{align-items:center;gap:11px;min-width:0;min-height:44px;text-decoration:none;display:inline-flex}.brand-icon{color:#fff;background:linear-gradient(135deg,#2563eb,#4f46e5);border-radius:12px;flex:none;place-items:center;width:38px;height:38px;display:grid;box-shadow:0 7px 16px #2563eb2e}.brand-name{gap:1px;display:grid}.brand-name strong{font-size:16px;line-height:1.2}.brand-name small{color:var(--soft);font-size:11px}.header-link{min-height:44px;color:var(--muted);flex:none;align-items:center;gap:4px;font-size:13px;font-weight:700;text-decoration:none;display:inline-flex}.header-link:hover,.official-link:hover,.support-card a:hover{color:var(--blue-dark)}.page-main{flex:1;width:min(760px,100% - 32px);margin:0 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