:root{--bg:#f4f7ff;--surface:#fff;--surface-soft:#eef3ff;--border:#e3eaf8;--text:#1a2b4a;--muted:#7b8aa8;--brand:#2f6bff;--brand-soft:#dce6ff;--brand-deep:#1e4fd6;--accent-orange:#ff9d3d;--accent-orange-soft:#ffe9d2;--accent-green:#2bc48a;--accent-green-soft:#d6f5e6;--accent-red:#ff6b6b;--accent-red-soft:#ffe0e0;--accent-gold:#ffc53d;--accent-yellow-soft:#fff4d2;--shadow-card:0 6px 20px rgba(47,107,255,.08);--shadow-soft:0 2px 8px rgba(26,43,74,.06);--radius-card:16px;--radius-pill:999px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}@keyframes spin{to{transform:rotate(1turn)}}.page-narrow{max-width:720px;margin:0 auto;padding:0 1rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-soft)}.card-body,.feature-card{padding:1rem 1.25rem}.feature-card{display:flex;align-items:center;gap:1rem;transition:transform .12s ease,box-shadow .12s ease}.feature-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-card)}.feature-icon{font-size:1.6rem}.feature-title{font-weight:700;color:var(--text)}.feature-desc{margin:4px 0 0;color:var(--muted);font-size:.9rem}.feature-arrow{color:var(--muted);font-size:1.6rem}:root{--danger-bg:var(--accent-red-soft);--danger-border:var(--accent-red);--danger-text:var(--accent-red);--soft:var(--muted)}