:root{--bg: #f4f7fb;--bg-elevated: #ffffff;--bg-sunken: #e9eff7;--surface: #ffffff;--surface-2: #f7f9fc;--border: #d3dded;--border-strong: #6b8299;--text: #101828;--text-muted: #40566d;--accent: #1d4ed8;--accent-ink: #ffffff;--accent-soft: #e6edfb;--rule-accent: #304c67;--master-accent: #653b2c;--warn-bg: #fdf6ec;--warn-border: #d99a3f;--warn-text: #6b4a12;--removed-bg: #fdecec;--removed-text: #8a1c1c;--added-bg: #e8f5ec;--added-text: #14532d;--hero-from: #123a52;--hero-to: #0f5c58;--hero-text: #ffffff;--shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 8px 24px -12px rgb(16 24 40 / 18%);--radius: 14px;--radius-sm: 9px}[data-theme=dark]{--bg: #0d1420;--bg-elevated: #141d2b;--bg-sunken: #101828;--surface: #141d2b;--surface-2: #1a2536;--border: #2a3648;--border-strong: #56708c;--text: #eef3fa;--text-muted: #a8bad0;--accent: #7aa2f7;--accent-ink: #0d1420;--accent-soft: #1c2c47;--rule-accent: #9db8d4;--master-accent: #e0a992;--warn-bg: #2c2413;--warn-border: #a37a2c;--warn-text: #f2dcae;--removed-bg: #38191b;--removed-text: #f4b9b9;--added-bg: #142c1e;--added-text: #a9dfbc;--hero-from: #0b2634;--hero-to: #0a3a38;--hero-text: #eef3fa;--shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 10px 28px -14px rgb(0 0 0 / 70%)}*{box-sizing:border-box}.app{background:var(--bg);color:var(--text);min-height:100vh}html,body,#root{margin:0;padding:0;min-height:100%}body{background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans TC,PingFang TC,Microsoft JhengHei,Roboto,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}button{font:inherit;color:inherit;cursor:pointer}.hero{background:linear-gradient(115deg,var(--hero-from),var(--hero-to));color:var(--hero-text);padding:26px 0 30px}.shell{width:min(1240px,100% - 40px);margin-inline:auto}@media(max-width:640px){.shell{width:min(1240px,100% - 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var(--warn-border);color:var(--warn-text);border-radius:var(--radius-sm);padding:11px 15px;margin:18px 0 0;font-size:13.5px;line-height:1.55}.tabs{display:flex;gap:6px;margin:20px 0 22px;border-bottom:1px solid var(--border)}.tab{background:none;border:0;border-bottom:3px solid transparent;padding:10px 4px;margin-right:20px;font-size:15.5px;font-weight:600;color:var(--text-muted);transition:color .15s ease}.workspace{display:grid;gap:22px;align-items:start;padding-bottom:40px}@media(min-width:1024px){.workspace{grid-template-columns:minmax(320px,380px) minmax(0,1fr)}.query-column{position:sticky;top:18px}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.card-head{display:flex;align-items:center;gap:10px;padding:15px 18px;border-bottom:1px solid 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ease}.skip-link:focus{top:12px}.tabs{display:flex;gap:6px;margin:0 0 18px;border-bottom:1px solid var(--border)}.tab{appearance:none;border:0;border-bottom:2px solid transparent;background:none;color:var(--text-muted);font:inherit;font-size:15px;font-weight:650;padding:9px 14px;cursor:pointer;margin-bottom:-1px}.tab:hover{color:var(--text)}.tab[aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent)}.ask-remaining{margin-left:auto;font-size:12.5px;color:var(--text-muted);font-variant-numeric:tabular-nums}.ask-answered-list{display:grid;gap:6px}.ask-answered{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:8px 12px;border-radius:var(--radius-sm);background:var(--surface-2);font-size:13.5px;line-height:1.5}.ask-answered b{font-weight:700;white-space:nowrap}.ask-answered button{appearance:none;background:none;border:0;padding:0;flex:none;color:var(--accent);font:inherit;font-size:12.5px;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.ask-current{border:2px solid var(--accent);border-radius:var(--radius-sm);padding:14px;display:grid;gap:10px;background:var(--bg-elevated)}.ask-question{margin:0;font-size:15.5px;font-weight:750}.ask-verbatim{margin:0;font-size:15px;font-weight:650;line-height:1.6}.ask-source,.ask-hint{margin:0;font-size:12.5px;color:var(--text-muted);line-height:1.6}.ask-options{display:grid;gap:6px}.ask-option{display:flex;align-items:flex-start;gap:9px;padding:9px 11px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg-elevated);color:inherit;font:inherit;font-size:14px;line-height:1.55;text-align:left;cursor:pointer}.ask-option[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);font-weight:650}.ask-box{width:16px;height:16px;margin-top:3px;border:1.5px solid var(--border-strong);border-radius:4px;flex:none}.ask-option[aria-pressed=true] .ask-box{background:var(--accent);border-color:var(--accent);box-shadow:inset 0 0 0 2px var(--bg-elevated)}.ask-actions{display:flex;gap:8px;align-items:center}.ask-no{border:1px solid var(--border-strong)}.tier-hero{border-radius:var(--radius);padding:18px 20px;display:grid;gap:4px;background:linear-gradient(115deg,var(--hero-from),var(--hero-to));color:var(--hero-text)}.tier-eyebrow{font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.75}.tier-name{font-size:30px;font-weight:800;line-height:1.15}.tier-because{font-size:13px;opacity:.92;line-height:1.6}.step-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.step-card{border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);padding:12px 14px;background:var(--surface);font-size:13.5px;line-height:1.75}.provenance{margin:0;font-size:12px;color:var(--text-muted);line-height:1.6}.rule-block+.rule-block{margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}.rule-block h3{margin:0 0 8px;font-size:14px;font-weight:650}@media(max-width:640px){.tier-name{font-size:25px}.tabs{overflow-x:auto}}.footer-credit{margin-top:8px;padding-top:12px;border-top:1px solid var(--border);color:var(--text);font-weight:600}.show-more{justify-self:start;appearance:none;border:1px solid var(--border-strong);border-radius:999px;background:var(--bg-elevated);color:inherit;font:inherit;font-size:13.5px;font-weight:600;padding:9px 18px;cursor:pointer}.show-more:hover{border-color:var(--accent);color:var(--accent)}