:root{--bg:#f6f7fb;--surface:#fff;--surface-2:#eef2f7;--text:#101828;--muted:#667085;--line:#d9e0ea;--brand:#164e63;--brand-2:#2563eb;--shadow:0 18px 55px rgba(16,24,40,.1);--radius:22px;--max:1180px}[data-theme=dark]{--bg:#0b1118;--surface:#111a24;--surface-2:#162231;--text:#e6edf6;--muted:#9aa8ba;--line:#27384c;--brand:#22d3ee;--brand-2:#60a5fa;--shadow:0 18px 55px rgba(0,0,0,.34)}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","Noto Sans TC","Microsoft JhengHei",sans-serif;background:radial-gradient(circle at top left,rgba(37,99,235,.09),transparent 34rem),var(--bg);color:var(--text);line-height:1.6}a{text-decoration:none;color:inherit}button,input,textarea,select{font:inherit;color:inherit}input,textarea,select{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 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var(--line);border-radius:var(--radius);padding:22px}.metric-card strong{display:block;font-size:1.8rem}.metric-card span,.tool-card p,.muted{color:var(--muted)}.section-block{padding:42px 22px}.section-head h2,.content-panel h2,.tool-group h2,.tool-group h3{font-size:clamp(1.4rem,3vw,2.25rem);letter-spacing:-.03em;margin:0 0 8px}.tool-filter{margin:20px 0}.sticky-filter{position:sticky;top:86px;z-index:8}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:16px 0 34px}.tool-card{display:grid;gap:10px;min-height:190px;transition:transform .18s,box-shadow .18s,border .18s}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand-2) 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