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var(--border)}.revisit-card{border-left:4px solid var(--gold)}.player.deep{z-index:60}.deep-body{overflow-y:auto;padding-bottom:12px}.notebook-q{margin:8px 0 10px}.notebook-q .prompt{font-size:19px;margin:4px 0 0}.step-card{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;margin:8px 0;border-radius:14px;background:var(--surface);border:2px solid var(--border);font-weight:700;line-height:1.45;animation:pop-in .2s ease}.step-card.ok{border-color:color-mix(in srgb,var(--green) 60%,var(--border))}.step-card.helped{border-color:color-mix(in srgb,var(--gold) 60%,var(--border))}.step-card.current{border-color:var(--blue);background:var(--surface-2)}.step-n{flex:none;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:900;background:var(--surface-3);color:var(--muted)}.step-ask{font-size:15px;word-break:break-word}.step-input{min-height:42px;padding:8px 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b{color:var(--red)}.calc-btn{padding:6px 10px;min-height:36px}.calc-sheet{position:fixed;left:0;right:0;bottom:0;z-index:80;max-width:560px;margin:0 auto;padding:14px 16px calc(14px + var(--bottom-inset));background:var(--bg-2);border-top:2px solid var(--border);border-radius:22px 22px 0 0;box-shadow:0 -12px 40px #00000073;animation:slide-up .2s ease}.calc-history{font-size:13px;color:var(--muted);text-align:right}.calc-display{margin:8px 0 10px;padding:10px 14px;border-radius:14px;background:var(--bg);border:2px solid var(--border);text-align:right}.calc-expr{font-size:22px;font-weight:800;word-break:break-all}.calc-value{min-height:20px;font-size:15px;color:var(--green)}.calc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:10px}.calc-key{min-height:44px;border:0;border-radius:12px;background:var(--surface-2);color:var(--text);font-size:18px;font-weight:800}.calc-key.op{background:var(--surface-3);color:var(--gold)}.calc-key.clear{color:var(--red)}.build-box{display:flex;flex-wrap:wrap;gap:6px;align-items:center;min-height:52px;margin:8px 0;padding:8px;border-radius:14px;border:2px dashed var(--border);background:var(--bg)}.build-box.bad{border-color:var(--red);animation:shake .3s}.tile-bank{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.step-card .tile{min-height:40px;min-width:40px;padding:6px 12px;border-radius:12px;border:2px solid var(--border);border-bottom-width:4px;background:var(--surface-2);color:var(--text);font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:16px;font-weight:800}.step-card .tile:disabled{opacity:.25}.step-card .tile.placed{background:var(--surface-3)}.step-card .tile.ghost{border-style:dashed;color:var(--muted);background:transparent}.step-card .tile.answer{min-width:64px}.step-card .tile.wrong{border-color:var(--red);color:var(--red)}.web-editor{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-variant-ligatures:none;font-size:13px;line-height:1.5;white-space:pre;overflow-x:auto}.web-preview{width:100%;height:320px;margin-top:6px;border:2px solid var(--border);border-radius:14px;background:#fff}.lab-verdict{margin:10px 0;padding:10px 12px;border-radius:14px;font-weight:800}.lab-verdict.ok{background:color-mix(in srgb,var(--green) 18%,var(--bg));color:var(--green)}.lab-verdict.bad{background:color-mix(in srgb,var(--red) 16%,var(--bg));color:var(--red)}.sql-table-wrap{margin-top:10px;overflow-x:auto}.sql-table{border-collapse:collapse;font-family:ui-monospace,SF 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100%,rgba(245,185,56,.22) 0%,transparent 60%),var(--surface)}.hero-stats{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:14px;color:var(--muted)}.hero-stats b{color:var(--gold);font-size:18px}.stage-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.stage-chip{font-size:12px;font-weight:800;padding:4px 8px;border-radius:999px;background:var(--surface-2)}.rotation-row{display:flex;align-items:center;gap:12px;width:100%;margin-top:10px;padding:10px;border-radius:14px;border:1px solid var(--border);border-left:4px solid var(--unit, var(--gold));background:var(--surface-2);color:var(--text);font:inherit;text-align:left;cursor:pointer}.rotation-icon,.track-icon{font-size:26px;width:36px;text-align:center;flex-shrink:0}.school-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px;margin:12px 0}.school-tile{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:4px;min-height:104px;padding:10px;border-radius:16px;border:1px solid var(--border);background:var(--surface);background:linear-gradient(160deg,color-mix(in srgb,var(--unit) 30%,transparent),var(--surface) 70%);color:var(--text);font:inherit;text-align:left;cursor:pointer}.school-tile.complete{border-color:var(--gold)}.school-no{position:absolute;top:8px;right:10px;font-size:12px;font-weight:900;color:var(--muted)}.school-icon{font-size:24px}.school-name{font-size:12px;font-weight:800;line-height:1.2;flex:1}.school-bar{display:block;width:100%;height:5px;border-radius:999px;background:var(--surface-3);overflow:hidden}.school-bar>span{display:block;height:100%;background:var(--unit, var(--gold));border-radius:999px}.unit-section{scroll-margin-top:12px}.track-card{padding:12px}.track-head,.scenario-card{display:flex;align-items:center;gap:12px;width:100%;padding:0;border:0;background:none;color:var(--text);font:inherit;text-align:left;cursor:pointer}.scenario-card{padding:14px;border:1px solid var(--border);background:var(--surface)}.scenario-title{display:flex;align-items:center;gap:10px;margin:10px 0}.choice-btn{display:block;width:100%;margin-bottom:10px;padding:14px;border-radius:16px;border:2px solid var(--border);border-bottom-width:4px;background:var(--surface);color:var(--text);font:inherit;font-weight:700;text-align:left;cursor:pointer}.choice-btn:active{transform:translateY(2px);border-bottom-width:2px}.whatif-row{margin-top:10px;padding:10px;border-radius:12px;background:var(--surface-2)}.whatif-row.picked{outline:2px solid var(--blue)}