:root{--bg: #0a0612;--bg-elev: #110a1f;--surface: #160e26;--surface-2: #1f1633;--surface-3: #2a1f44;--ink: #f4ecd8;--ink-2: #d6cdb8;--muted: #8a82a0;--mute-2: #5a5470;--line: rgba(255, 255, 255, .08);--line-2: rgba(255, 255, 255, .14);--line-strong: rgba(255, 255, 255, .22);--brand: #f5c344;--brand-deep: #d49a14;--brand-darker: #a36e0a;--brand-tint: rgba(245, 195, 68, .18);--brand-tint-2: rgba(245, 195, 68, .08);--brand-glow: rgba(245, 195, 68, .45);--math: #6ec5ff;--math-tint: rgba(110, 197, 255, .16);--math-deep: #9bd6ff;--puzzle: #b07cff;--puzzle-tint: rgba(176, 124, 255, .16);--puzzle-deep: #c79dff;--training: #ffb74d;--training-tint: rgba(255, 183, 77, .14);--training-deep: #ffcc7a;--final: var(--brand);--final-tint: var(--brand-tint);--final-deep: var(--brand);--ok: #4ade80;--ok-tint: rgba(74, 222, 128, .14);--warn: #f5c344;--warn-tint: rgba(245, 195, 68, .14);--bad: #ff6b7a;--bad-tint: rgba(255, 107, 122, .14);--font-display: "Cormorant Garamond", "Playfair Display", Georgia, 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.v{color:var(--ink);font-size:var(--text-lg)}.chip.timer.urgent{background:#ff6b7a24;border-color:var(--bad);color:var(--bad)}.chip.timer.urgent .ic{background:#ff6b7a38;color:var(--bad)}.chip.timer.urgent .v{color:var(--bad)}.chip.timer.idle{background:#ffffff08;color:var(--muted);border:1px solid var(--line)}.chip.timer.idle .v,.chip.timer.idle .k{color:var(--muted)}.chip.timer.idle .ic{background:var(--line);color:var(--muted)}.doors{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-5)}.doors .door-wrap{display:flex;flex-direction:column;gap:var(--s-3)}.doors .door-wrap:has(.door-final){grid-column:1 / -1}.door-meta{padding:0 var(--s-2)}@media (max-width: 640px){.doors{grid-template-columns:1fr}}.door{position:relative;display:flex;flex-direction:column;gap:var(--s-4);padding:var(--s-6);min-height:220px;border-radius:var(--r-xl);background:linear-gradient(180deg,#ffffff08,#fff0),var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);overflow:hidden;transition:transform var(--t-md) var(--ease),box-shadow var(--t-md) var(--ease),border-color var(--t-md) var(--ease)}.door .door-hemi{position:absolute;top:-120px;right:-80px;width:280px;height:280px;border-radius:50%;background:var(--door-tint, rgba(255, 255, 255, .04));opacity:.65;filter:blur(2px);pointer-events:none;transition:transform var(--t-md) var(--ease)}.door .door-icon{position:relative;z-index:1;width:52px;height:52px;display:grid;place-items:center;border-radius:16px;background:var(--door-ink, rgba(255, 255, 255, .08));color:var(--ink);box-shadow:0 0 24px -6px var(--door-glow, rgba(255, 255, 255, .18))}.door .door-body{position:relative;z-index:1;display:flex;flex-direction:column;gap:var(--s-1);margin-top:auto}.door .door-kind{font-family:var(--font-mono);font-size:10px;text-transform:uppercase;letter-spacing:.18em;color:var(--muted)}.door .door-name{font-family:var(--font-display);font-weight:800;font-size:var(--text-xl);letter-spacing:-.01em;color:var(--ink)}.door .door-progress{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);padding-top:var(--s-3);border-top:1px solid var(--line)}.door .door-bar{flex:1;height:6px;border-radius:var(--r-pill);background:#ffffff0f;overflow:hidden}.door .door-bar>i{display:block;height:100%;border-radius:var(--r-pill);background:var(--door-ink, var(--brand));transition:width var(--t-slow) var(--ease)}.door .door-count{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:var(--text-sm);color:var(--ink-2)}.door.unlocked{cursor:pointer}.door.unlocked:hover{transform:translateY(-4px);border-color:var(--door-ink, var(--line-strong));box-shadow:var(--sh-3),0 0 32px -10px var(--door-glow, rgba(255, 255, 255, .18))}.door.unlocked:hover 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var(--line)}.door-state-tag.open{background:var(--ok-tint);color:var(--ok);border-color:#4ade8052}.hall-grid{display:grid;grid-template-columns:320px 1fr;gap:var(--s-5);align-items:start}@media (max-width: 860px){.hall-grid{grid-template-columns:1fr}}.problem-list{display:flex;flex-direction:column;gap:var(--s-2)}.problem-row{display:flex;align-items:center;gap:var(--s-3);padding:12px;border-radius:var(--r-md);border:1px solid transparent;background:#ffffff06;cursor:pointer;transition:all var(--t-fast) var(--ease)}.problem-row:hover{background:#ffffff0d;transform:translate(2px)}.problem-row.active{border-color:#f5c34480;background:var(--brand-tint-2);box-shadow:0 0 24px -10px var(--brand-glow)}.problem-row .pidx{width:30px;height:30px;flex-shrink:0;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line-2);font-family:var(--font-body);font-weight:700;font-size:var(--text-sm);color:var(--muted);background:#ffffff0a}.problem-row.solved .pidx{background:var(--ok);border-color:var(--ok);color:#0a1a10}.problem-row.solved .ptitle{color:var(--muted)}.problem-row.locked .pidx{background:var(--warn-tint);border-color:#f5c34466;color:var(--warn)}.problem-row .pmeta{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.problem-row .ptitle{font-family:var(--font-body);font-weight:600;font-size:var(--text-md);color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.problem-row .psub{font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.04em}.diff-dots{display:inline-flex;gap:3px}.diff-dots i{width:6px;height:6px;border-radius:50%;background:var(--line-2)}.diff-dots i.on{background:var(--training-deep)}.problem-pane{padding:var(--s-8);display:flex;flex-direction:column;gap:var(--s-5)}.problem-pane 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