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#fff7ed;--moderate-line: #fed7aa;--hard-ink: #7f1d1d;--hard-bg: #fef2f2;--hard-line: #fecaca;--selected-ring: rgba(23, 63, 117, .15);--focus-ring: rgba(23, 63, 117, .23);--answered-bg: #eff6ff;--answered-line: #93c5fd;--success-strong: #16a34a;--danger-strong: #dc2626;--success-line: #86efac;--danger-line: #fecaca;--amber-line: #fcd34d;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;--font-display: Georgia, "Times New Roman", ui-serif, serif;font-family:var(--font-sans)}:root[data-theme=dark]{color-scheme:dark;--bg: #101214;--ink: #f2f4f7;--muted: #a8b2bf;--line: #333942;--line-strong: #596372;--paper: #181c21;--surface: #101214;--surface-2: #20242a;--accent: #7cb7ff;--accent-strong: #a6d1ff;--accent-soft: #1c3042;--gold: #f4c76f;--danger: #ff9b91;--danger-bg: #3b1f22;--success: #8bd9a3;--success-bg: #173326;--amber: #f4c76f;--amber-bg: #342814;--navy: #7cb7ff;--shadow: 0 18px 40px rgba(0, 0, 0, .32);--shadow-soft: 0 1px 2px rgba(0, 0, 0, .28), 0 10px 24px rgba(0, 0, 0, .22);--topbar-shadow: 0 2px 14px rgba(0, 0, 0, .24);--accent-contrast: #08111f;--hero-overlay-start: rgba(15, 22, 30, .83);--hero-overlay-end: rgba(28, 48, 66, .78);--hero-ink: #ffffff;--hero-muted: #dce6ef;--hero-eyebrow: #b9dafd;--progress-bg: #2a3038;--table-head-bg: #202a34;--footer-bg: #0e1012;--footer-ink: #c5ced8;--question-head-bg: #181c21;--badge-bg: #20242a;--easy-ink: #9ee6b2;--easy-bg: #172f24;--easy-line: #2f6844;--moderate-ink: #ffd18b;--moderate-bg: #332514;--moderate-line: #7a5520;--hard-ink: #ffada6;--hard-bg: #371f23;--hard-line: #74343a;--selected-ring: rgba(124, 183, 255, .22);--focus-ring: rgba(124, 183, 255, .36);--answered-bg: #1d3147;--answered-line: #3d6f9f;--success-strong: #22c55e;--danger-strong: #ef4444;--success-line: #3f8f5a;--danger-line: #834049;--amber-line: #a77722}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,rgba(255,255,255,.7),transparent 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h3 a{text-decoration-thickness:1px;text-underline-offset:4px}.subject-count{color:var(--muted);font-size:.82rem;font-weight:760}.topic-summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:2px;color:var(--muted);font-size:.78rem;font-weight:850;letter-spacing:.06em;text-transform:uppercase}.topic-summary strong{min-width:32px;min-height:28px;padding:0 9px;border-radius:999px;display:inline-grid;place-items:center;background:var(--accent-soft);color:var(--accent-strong);letter-spacing:0}.topic-list{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0;padding:0}.topic-list li{min-width:0}.topic-list a{min-height:52px;height:100%;display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;align-items:start;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:color-mix(in srgb,var(--surface-2) 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#ffffff7a;position:relative}.question-focus:before{content:"";position:absolute;inset:14px auto 14px 0;width:4px;border-radius:0 999px 999px 0;background:#111315}.question-progress{height:7px;border-radius:999px;background:var(--progress-bg);overflow:hidden}.question-progress span{display:block;width:0%;height:100%;border-radius:inherit;background:#111315;transition:width .28s ease}.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:700;border:1px solid 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select{min-width:220px}.practice-submit-row{display:flex;gap:12px;align-items:end;justify-content:space-between;flex-wrap:wrap;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}.confidence-control{display:grid;gap:7px;color:var(--muted);font-size:.82rem;font-weight:680}.confidence-control span{padding-left:2px}.answer-state{margin-top:14px;border-radius:12px;padding:12px 14px;border:1px solid var(--line);background:var(--surface-2)}.answer-state.good{background:var(--success-bg);color:var(--success);border-color:var(--success-line)}.answer-state.bad{background:var(--danger-bg);color:var(--danger);border-color:var(--danger-line)}.learning-card{border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:13px 14px;background:var(--surface-2)}.learning-card h3{margin:5px 0 6px;font-size:1.02rem}.learning-card 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