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0;font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.board-cut:before,.board-cut:after{content:"";flex:1;height:2px;background:var(--line)}.board-cut+.board{margin-top:8px}.zone-banner{display:flex;align-items:center;justify-content:center;gap:12px;padding:8px 4px;margin:4px 0;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;border:none;background:transparent}.zone-banner.promote{color:#58cc02}.zone-banner.demote{color:#ff4b4b}.hard-lab-banner{margin:0 0 8px;padding:8px 12px;text-align:center;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#ff4b4b;border:2px solid currentColor;border-radius:12px}.league-timer{font-weight:800;color:var(--xp);background:var(--card);border:2px solid var(--line);border-radius:20px;padding:8px 12px;display:grid;gap:6px;justify-items:end}.board-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}.board-tabs button{border:2px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:8px 14px;font-weight:800}.board-tabs button.on{background:var(--done-bg);border-color:var(--green)}.board-name{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center}.trophy-badge{display:inline-flex;align-items:center;gap:6px;font-weight:800;border:2px solid currentColor;border-radius:999px;padding:4px 10px;background:var(--card)}.trophy-badge.compact{font-size:12px;padding:3px 8px}.trophy-gem{font-size:.85em}.trophy-card{margin-top:20px;background:var(--card);border:2px solid var(--line);border-radius:20px;padding:16px}.trophy-card .trophy-badge{margin:8px 0;font-size:1.05rem;padding:8px 14px}.trophy-card .insight-meter{margin:10px 0 14px}.trophy-fill{background:currentColor}.trophy-ladder{list-style:none;padding:0;margin:0;display:grid;gap:6px}.trophy-step{display:grid;grid-template-columns:1.2em 1fr auto;gap:8px;align-items:center;opacity:.4;font-weight:700}.trophy-step.reached{opacity:1}.trophy-step.active{font-weight:800}[data-tier=bronze]{color:#c47a32;--tier: #c47a32}[data-tier=silver]{color:#8a97a6;--tier: #8a97a6}[data-tier=gold]{color:#d4a017;--tier: #d4a017}[data-tier=sapphire]{color:#2f6fed;--tier: #2f6fed}[data-tier=ruby]{color:#d7263d;--tier: #d7263d}[data-tier=emerald]{color:#1aa05a;--tier: #1aa05a}[data-tier=amethyst]{color:#8b5cf6;--tier: #8b5cf6}[data-tier=pearl]{color:#7a8b99;--tier: #7a8b99}[data-tier=obsidian]{color:#4b5563;--tier: #4b5563}[data-tier=diamond]{color:#5ec8e8;--tier: #5ec8e8}html[data-theme=dark] [data-tier=silver]{color:#c5d0dc;--tier: #c5d0dc}html[data-theme=dark] [data-tier=pearl]{color:#d7e2ea;--tier: #d7e2ea}html[data-theme=dark] [data-tier=obsidian]{color:#9aa3af;--tier: #9aa3af}.league-node.here .tl-name,.league-live-name{background-image:linear-gradient(90deg,var(--tier) 0%,#ffffff 50%,var(--tier) 100%);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;animation:league-sheen 2.2s linear infinite}@keyframes league-sheen{0%{background-position:100% 50%}to{background-position:-100% 50%}}.board-xp{color:var(--xp)}.board-streak{color:var(--streak);min-width:auto;text-align:center;white-space:nowrap}.board-row .streak-chip{margin:0}.progress-topics{list-style:none;padding:0;margin:24px 0 0}.progress-topic{margin-bottom:20px}.progress-topic p{margin:0 0 10px;color:var(--muted)}.progress-diffs{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}.progress-pill{border:2px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700;background:var(--card)}.progress-pill.done{border-color:var(--green);background:var(--done-bg)}.progress-pill.empty{opacity:.55}.sidebar-brand h1{font-size:1.4rem}.admin-add{display:flex;flex-wrap:wrap;align-items:end;gap:12px;margin:16px 0;background:var(--card);border:2px 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1fr;gap:12px;margin:12px 0}.admin-edit label{display:grid;gap:6px;font-weight:700;font-size:14px}.admin-edit input{font:inherit;padding:10px;border:2px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink)}.admin-topics{list-style:none;padding:0;margin:0 0 8px;display:grid;gap:12px}.admin-topic{border-top:1px solid var(--line);padding-top:12px}.admin-edit .primary{margin-top:8px}.guide-steps{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}.guide-step{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;margin-top:0}.guide-step h2{margin:0 0 6px;font-size:1.05rem}.guide-step p{margin:0;color:var(--muted)}.guide-num{width:32px;height:32px;margin:0;display:grid;place-items:center;border-radius:10px;background:var(--done-bg);color:var(--green-dark);font-weight:800}.change-form{display:grid;gap:12px}.change-form h2{margin:0}.change-form label{display:grid;gap:6px;font-weight:700;font-size:14px}.change-form input,.change-form textarea{font:inherit;padding:10px;border:2px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink)}.change-log{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}.change-item{margin-top:0}.change-item h2{margin:4px 0 8px;font-size:1.05rem}.change-item p{margin:0;color:var(--muted)}.change-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.profile-split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start;margin-top:16px}.profile-card,.profile-block{background:var(--card);border:2px solid var(--line);border-radius:20px;padding:16px;margin-top:16px}.profile-card{margin-top:0}.profile-card h2,.profile-block h2{margin:0 0 12px;font-size:1.1rem}.strengths-card{border-color:var(--green)}.weaknesses-card{border-color:var(--red)}.profile-topics{list-style:none;padding:0;margin:0;display:grid;gap:14px}.profile-topic-head{display:grid;gap:2px;margin-bottom:6px}.profile-topic .insight{margin-bottom:6px}.profile-topic .insight-meter{margin-bottom:0}.insight{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline;margin:0 0 10px;font-weight:700;font-size:13px}.insight.compact{margin:8px 0 0}.insight-label{border-radius:999px;padding:2px 8px;border:2px solid var(--line);background:var(--card)}.insight.strength .insight-label{border-color:var(--green);background:var(--done-bg)}.insight.solid .insight-label{border-color:#1cb0f6;background:var(--card)}.insight.developing .insight-label,.insight.starting .insight-label{border-color:var(--streak-hot-border);color:var(--streak-hot)}.insight.weakness .insight-label{border-color:var(--red);background:var(--bad-bg)}.insight-detail{color:var(--muted);font-weight:600}.insight-meter{height:8px;background:var(--meter-track);border-radius:99px;overflow:hidden;margin:0 0 12px}.insight-fill{height:100%;background:var(--muted)}.insight-fill.strength{background:var(--green)}.insight-fill.solid{background:#1cb0f6}.insight-fill.developing,.insight-fill.starting{background:var(--streak-hot)}.insight-fill.weakness{background:var(--red)}.topbar,.lesson-bar{display:flex;align-items:center;justify-content:space-between;gap:12px}.eyebrow{margin:0;text-transform:uppercase;letter-spacing:.08em;font-size:12px;color:var(--muted)}h1,h2{margin:4px 0 8px}.login-page{display:flex;flex-direction:column;min-height:100vh}.login-card{margin-top:48px;background:var(--card);border:2px solid var(--line);border-radius:20px;padding:24px 20px;display:grid;gap:12px}.login-card h2{margin:0}.login-hint,.login-user{color:var(--muted);margin:0}.login-card label{display:grid;gap:6px;font-weight:700;font-size:14px}.login-card input{font:inherit;padding:12px;border:2px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink)}.login-error{color:var(--red);margin:0}.logout-btn{padding:8px 10px}.stat-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.stat-row .trophy-badge{font-size:inherit;font-weight:700;padding:8px 14px;border-radius:16px}.xp-chip,.streak-chip{background:var(--card);border:2px solid var(--line);border-radius:16px;padding:8px 14px;font-weight:700}.xp-chip{color:var(--xp)}.streak-chip{color:var(--streak)}.streak-chip.hot{color:var(--streak-hot);border-color:var(--streak-hot-border)}.streak-chip.at-risk{animation:streak-warn 1.4s ease-in-out infinite}.streak-chip-warn{margin-left:6px;font-size:11px;letter-spacing:.06em;text-transform:uppercase}@keyframes streak-warn{0%,to{box-shadow:none}50%{box-shadow:0 0 0 3px #ff960047}}.streak-notice{max-width:720px;margin:16px auto 0;padding:12px 14px;display:flex;align-items:center;flex-wrap:wrap;gap:12px;background:var(--card);border:2px solid var(--streak-hot-border);border-radius:16px;color:var(--ink)}.streak-notice.saved{border-color:var(--green)}.streak-notice.saved .streak-notice-icon{background:var(--done-bg);color:var(--green)}.page .streak-notice{margin:16px 0 0}.streak-notice-icon{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:var(--done-bg);color:var(--streak-hot);flex:0 0 auto}.streak-notice.urgent .streak-notice-icon{background:var(--bad-bg);color:var(--red)}.streak-notice-copy{flex:1 1 180px;min-width:0}.streak-timer-wrap{flex:0 0 auto;text-align:right}.streak-timer-label{margin:0;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.streak-timer{margin:2px 0 0;font-variant-numeric:tabular-nums;font-weight:800;font-size:1.35rem;letter-spacing:.04em;line-height:1.1;color:var(--streak-hot)}.streak-notice.saved .streak-timer{color:var(--green)}.streak-notice.urgent .streak-timer{color:var(--red)}.streak-notice-title{margin:0;font-weight:800}.streak-notice-text{margin:2px 0 0;color:var(--muted);font-size:.95rem}.streak-notice-actions{display:flex;flex-wrap:wrap;gap:8px;margin-left:auto}.theme-switch{display:grid;grid-template-columns:1fr 1fr;width:max-content;max-width:100%;border:2px solid var(--line);border-radius:16px;overflow:hidden;background:var(--card);flex-shrink:0}.sidebar-foot .theme-switch{width:100%}.theme-switch.compact{width:88px}.theme-switch.compact button{padding:6px 8px;gap:0}.theme-switch button{display:flex;align-items:center;justify-content:center;gap:6px;border:none;background:transparent;color:var(--muted);padding:8px 10px;font-weight:700;min-width:0}.theme-switch button.on{background:var(--green);color:#fff}.path{list-style:none;padding:0;margin:28px 0 0}.ladder-path .unit{margin-bottom:8px}.ladder-path .unit-label{text-align:center;max-width:22rem;margin:0 auto 8px}.ladder-path .unit-label h2{font-size:1.15rem}.ladder-path .nodes{--snake: 82px;display:flex;flex-direction:column;align-items:center;gap:18px;position:relative;padding:12px 0 32px}.ladder-path .nodes:before{content:"";position:absolute;left:50%;top:8px;bottom:8px;width:6px;margin-left:-3px;background:var(--line);border-radius:99px;z-index:0}.ladder-path .node{position:relative;z-index:1;width:128px;flex:0 0 auto}.ladder-path .node:nth-of-type(4n+1){transform:translate(calc(-1 * var(--snake)))}.ladder-path .node:nth-of-type(4n+2){transform:translate(calc(-.38 * var(--snake)))}.ladder-path .node:nth-of-type(4n+3){transform:translate(var(--snake))}.ladder-path .node:nth-of-type(4n+4){transform:translate(calc(.38 * var(--snake)))}.ladder-path .unit:nth-child(2n) .node:nth-of-type(4n+1){transform:translate(var(--snake))}.ladder-path .unit:nth-child(2n) .node:nth-of-type(4n+2){transform:translate(calc(.38 * var(--snake)))}.ladder-path .unit:nth-child(2n) .node:nth-of-type(4n+3){transform:translate(calc(-1 * var(--snake)))}.ladder-path .unit:nth-child(2n) .node:nth-of-type(4n+4){transform:translate(calc(-.38 * var(--snake)))}.path-quiz-mark{box-sizing:border-box;width:min(22rem,calc(100% - 16px));margin:8px 0 4px;padding:14px 12px 0;border-top:3px solid var(--line);text-align:center;font-weight:800;font-size:14px;line-height:1.35;color:var(--muted);position:relative;z-index:1;align-self:center}.unit{margin-bottom:28px}.unit.locked .unit-label,.unit.locked .nodes{opacity:.55}.unit.locked.skip-ready .nodes{opacity:.85}.node.opens-skip{cursor:pointer}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--overlay);display:grid;place-items:end center;padding:16px;z-index:20}.event-sheet{width:min(480px,100%);background:var(--card);border-radius:24px 24px 16px 16px;padding:24px 20px 20px;margin-bottom:8px}.event-sheet h2{margin-bottom:8px}.event-sheet p{color:var(--muted);margin:0 0 16px}.quit-btn{width:100%;background:var(--red);color:#fff;border:none;border-bottom:4px solid #ea2b2b;border-radius:14px;padding:12px;font-weight:800}.trophy-overlay{z-index:80;place-items:center}.trophy-guide{border-radius:20px;margin:0;max-height:min(80vh,640px);overflow-y:auto}.trophy-guide-list{list-style:none;margin:0 0 12px;padding:0;display:grid;gap:6px}.trophy-guide-list li{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:10px 12px;border:2px solid var(--line);border-radius:14px;font-weight:800}.trophy-guide-list li.on{border-color:currentColor;background:var(--done-bg)}.trophy-guide-xp{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.9rem}.trophy-guide-list li.on .trophy-guide-xp{color:inherit}.sheet-cancel{width:100%;margin-top:8px;padding:12px}.skip-btn{width:100%;background:#1cb0f6;color:#fff;border:none;border-bottom:4px solid #1899d6;border-radius:14px;padding:12px;font-weight:800}.skip-sources,.skip-result{color:var(--muted);margin-top:0}.unit-label{margin-bottom:18px}.unit-label p{margin:0 0 12px;color:var(--muted)}.back-link{display:inline-flex;padding:0;margin-bottom:8px;color:var(--muted);border:none;background:none;font-weight:800}.section-list{display:grid;gap:16px;margin-top:20px}.paper-list{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px}.paper-row{width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:var(--cream);border:3px solid var(--line);border-bottom-width:6px;border-radius:18px;padding:12px 14px;color:inherit}.paper-row.done{border-color:var(--green);background:var(--done-bg)}.paper-row-copy{display:grid;gap:2px;min-width:0}.paper-row-title{font-weight:800}.paper-row-count{color:var(--muted);font-size:13px;font-weight:700}.section-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(140px,38%);gap:16px;align-items:start;background:var(--card);border:2px solid var(--line);border-radius:22px;padding:22px 20px 20px}.section-card.locked{opacity:.78}.section-card.current{border-color:color-mix(in srgb,var(--green) 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