:root{--brand-50: #eff6ff;--brand-100: #dbeafe;--brand-500: #3b82f6;--brand-600: #2563eb;--brand-700: #1d4ed8;--brand-800: #1e40af;--bg: #f9fafb;--surface: #ffffff;--surface-alt: #f3f4f6;--border: #e5e7eb;--text: #111827;--text-muted: #6b7280;--text-faint: #9ca3af;--success: #047857;--success-bg: rgba(16, 185, 129, .08);--warning: #b45309;--warning-bg: rgba(245, 158, 11, .08);--danger: #b91c1c;--danger-bg: rgba(239, 68, 68, .08);--radius-sm: 6px;--radius: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow: 0 2px 8px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .1);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang HK", "Source Han Sans HK", "Microsoft JhengHei", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}:root[data-theme=dark]{--bg: #0f172a;--surface: #1e293b;--surface-alt: #334155;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--text-faint: #64748b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .6)}@media(prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark}}*{box-sizing:border-box}html{font-family:var(--font-sans);-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;text-rendering:optimizeLegibility}:lang(zh){font-family:"PingFang HK","Source Han Sans HK","Microsoft JhengHei",var(--font-sans)}body{margin:0;padding:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.6;min-height:100dvh}a{color:var(--brand-700);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1080px;margin:0 auto;padding:0 16px}@media(min-width:720px){.container{padding:0 24px}}.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(8px)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}.site-header__brand{font-weight:700;font-size:18px;color:var(--text);letter-spacing:-.01em}.site-header__nav{display:flex;align-items:center;gap:20px}.site-header__nav a{color:var(--text-muted);font-size:14px;font-weight:500}.site-header__nav a:hover{color:var(--text);text-decoration:none}@media(max-width:720px){.site-header__nav .nav-link{display:none}}.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:32px 0;margin-top:64px;color:var(--text-muted);font-size:14px}.site-footer__inner{display:flex;flex-direction:column;gap:12px}@media(min-width:720px){.site-footer__inner{flex-direction:row;justify-content:space-between;align-items:center}}.site-footer__links{display:flex;gap:16px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--radius);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,color .15s ease,transform .05s ease;user-select:none}.button:active{transform:translateY(1px)}.button--primary{background:var(--brand-700);color:#fff}.button--primary:hover{background:var(--brand-800);text-decoration:none;color:#fff}.button--secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.button--secondary:hover{background:var(--surface-alt);text-decoration:none}.button--ghost{background:transparent;color:var(--text-muted)}.button--ghost:hover{color:var(--text);background:var(--surface-alt);text-decoration:none}.button--full{width:100%}.lang-switch{display:inline-flex;border:1px solid var(--border);border-radius:999px;overflow:hidden;background:var(--surface)}.lang-switch a{padding:6px 12px;font-size:13px;font-weight:600;color:var(--text-muted)}.lang-switch a[aria-current=true]{background:var(--brand-700);color:#fff}.lang-switch a:hover{text-decoration:none}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.tag{display:inline-block;padding:2px 8px;border-radius:999px;background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.02em}@media(pointer:coarse){.button,a,.lang-switch a{min-height:44px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}.theme-toggle[data-astro-cid-x3pjskd3]{padding:8px 12px;min-height:36px;font-size:16px}