:root{--navy:#1a2b4c;--blue:#1e56a0;--gold:#fdb813;--red:#e02424;--warm:#f8fafc;--muted:#64748b;--pale:#eaf1fb;--line:#e5ebf3;--green:#18775d; color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",sans-serif;color:var(--navy);background:#eef2f6}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit;-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #fdb813;outline-offset:3px}button:disabled{opacity:.4;cursor:default}.app{max-width:480px;margin:auto;min-height:100dvh;background:var(--warm);position:relative;box-shadow:0 0 80px #182b4b08}main{padding:26px 20px 112px;min-height:100dvh}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;gap:8px}h1{font-size:25px;letter-spacing:-1px;margin:0 0 5px;font-weight:850}header p{font-size:12px;color:var(--muted);margin:0}h2{font-size:19px;letter-spacing:-.4px;margin:24px 0 13px}h3{margin:0;font-size:17px}p{line-height:1.6;margin:0}.mascot{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--pale)}.mascot svg{width:90%;height:90%}.header-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px}.badge{background:var(--pale);color:var(--blue);border-radius:8px;font-size:11px;font-weight:650;padding:6px 9px;display:inline-block}.streak{background:#fff3d2;color:var(--navy);white-space:nowrap}.card{border:1px solid var(--line);background:white;border-radius:21px;padding:18px}.progress-top{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:750}.percent{font-size:29px;font-weight:850;letter-spacing:-1px}.track{height:7px;background:#f0f3f7;border-radius:10px;margin:12px 0;overflow:hidden}.track span{display:block;height:100%;background:var(--gold);border-radius:10px;transition:width .4s}.sub{font-size:12px;color:var(--muted)}.quick-row{display:grid;grid-template-columns:1fr 1fr;gap:11px;margin:14px 0 22px}.quick{padding:14px;text-align:left;border:1px solid #dee7f3;border-radius:16px;background:#eaf1fb}.quick:first-child{background:#fff8e4;border-color:#f5e9c7}.quick .symbol{font-size:20px;display:block;margin-bottom:6px}.quick strong{font-size:14px;display:block}.quick small{color:var(--muted);font-size:11px;display:block;margin-top:4px}.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;background:#f3f6fa;border-radius:12px;padding:4px}.tabs button{padding:10px 0;border-radius:9px;font-size:11px;font-weight:700;white-space:nowrap}.tabs .active{background:var(--navy);color:#fff;box-shadow:0 3px 6px #1a2b4c18}.chips{display:flex;gap:7px;overflow:auto;scrollbar-width:none;padding:12px 0 8px}.chip{border:1px solid var(--line);border-radius:10px;padding:8px 12px;white-space:nowrap;font-size:12px;background:white}.chip.active{background:var(--pale);border-color:#bacfe8;color:var(--blue);font-weight:700}.sim-card{padding:14px}.sim-status{display:flex;justify-content:space-between;align-items:center;margin:8px 2px;font-size:11px;color:var(--muted);height:22px}.live-dot{width:5px;height:5px;background:var(--blue);display:inline-block;border-radius:50%;margin-right:5px}.sim-status strong{color:var(--navy);font-size:12px}canvas{width:100%;display:block;border-radius:14px;background:#f2f6f5;touch-action:pan-y}.controls{display:flex;justify-content:space-between;margin:6px 0}.controls button{font-size:12px;color:var(--blue);padding:9px 4px;min-height:40px}.rule-strip{font-size:12px;background:var(--pale);border-radius:10px;padding:11px 12px;line-height:1.5;color:var(--blue);font-weight:600}.underlink{text-align:right;margin-top:8px}.underlink button{font-size:11px;color:var(--muted);padding:7px}.tip{background:#fff8e4;border:1px solid #f4ead0;border-radius:13px;padding:14px;width:100%;text-align:left;font-size:12px;margin-top:16px}.footnote{text-align:center;font-size:10px;color:#8491a4;margin-top:18px}.search{width:100%;border:1px solid #dce4ee;background:#fff;padding:15px;border-radius:14px;font-size:14px;outline:none;color:var(--navy);margin:3px 0 7px}.list{display:grid;gap:12px;margin-top:12px}.rule-row{display:flex;gap:5px;text-align:left;background:#fff;border:1px solid var(--line);border-radius:17px;padding:16px}.row-body{flex:1;text-align:left;padding:0}.row-body p{font-size:12px;color:var(--muted);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.row-body .badge{margin:8px 0 2px}.star{font-size:26px;width:36px;align-self:center;color:#8e9cb1}.star.saved{color:#e5a30a}.empty{font-size:14px;color:var(--muted);padding:32px 12px;text-align:center;line-height:1.8}nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);max-width:480px;width:100%;background:#ffffffef;backdrop-filter:blur(12px);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr);padding:8px 8px max(9px,env(safe-area-inset-bottom));z-index:5}nav button{display:grid;gap:5px;place-items:center;font-size:10px;color:#7c8798;padding:3px}.nav-icon{font-size:20px;line-height:30px;width:52px;height:30px;border-radius:20px}nav .selected{font-weight:750;color:var(--navy)}nav .selected .nav-icon{background:var(--pale);color:var(--blue)}dialog{padding:0;border:0;border-radius:25px;color:var(--navy);width:min(390px,calc(100% - 32px));max-height:calc(100dvh - 40px);box-shadow:0 24px 70px #13224133}dialog::backdrop{background:#10213b65;backdrop-filter:blur(4px)}.modal-content{padding:24px;overflow:auto}.modal-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:18px}.modal-content h2{font-size:28px;line-height:1.35;margin:12px 0 20px}.modal-content .intro{font-size:12px;color:var(--muted);margin:12px 0 6px}.close{color:var(--muted);font-size:13px;padding:8px}.level-choice{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;border:1px solid var(--line);background:var(--warm);border-radius:15px;padding:15px;margin:10px 0;text-align:left}.level-choice strong{font-size:14px;display:block;margin-bottom:5px}.level-choice small{font-size:11px;color:var(--muted)}.radio{width:18px;height:18px;border:2px solid #bac5d2;border-radius:50%;flex-shrink:0}.level-choice.active{background:var(--pale);border:2px solid var(--blue);padding:14px}.level-choice.active .radio{border:5px solid var(--blue)}.primary,.outline{width:100%;padding:14px;border-radius:13px;font-size:14px;font-weight:700;margin-top:14px;background:var(--blue);color:white}.outline{background:white;color:var(--blue);border:1px solid #bfd0e7}.rule-summary{font-size:18px;font-weight:550;line-height:1.7}.example{background:var(--pale);padding:16px;border-radius:14px;font-size:14px;line-height:1.7;margin:18px 0}.caution{font-size:12px;color:var(--muted);line-height:1.8}.snack{min-height:480px;padding:25px}.snack h2{font-size:34px;margin:24px 0 28px}.snack .rule-summary{font-size:23px;line-height:1.65}.snack .mascot{height:110px;width:110px;margin:25px auto}.pagination{display:flex;justify-content:space-between;align-items:center;margin-top:15px}.pagination button{padding:12px;font-size:13px;color:var(--blue)}.quiz-prompt{font-size:24px;line-height:1.5;margin:22px 0 25px;font-weight:750;letter-spacing:-.4px}.option{border:1px solid var(--line);border-radius:14px;padding:18px;width:100%;margin-bottom:10px;background:white;text-align:left;font-size:17px;font-weight:650}.option.correct{background:#edf8f3;border-color:var(--green);color:var(--green)}.option.wrong{background:#fff1f1;border-color:var(--red);color:var(--red)}.feedback{padding:18px;background:white;border-radius:18px;border:1px solid var(--line);margin-top:12px}.feedback p{font-size:14px;color:var(--muted);margin-top:8px}.score{font-size:48px;color:var(--blue);font-weight:850;margin:24px 0}.level-card{margin-top:20px}.pill-count{font-size:12px;color:var(--muted);margin:18px 0 7px}.pitch-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0}.pitch-controls button{background:var(--blue);color:white;border-radius:12px;font-size:12px;padding:12px}.pitch-counter{font-weight:750;font-size:15px}#toast{position:fixed;bottom:96px;left:50%;transform:translateX(-50%) translateY(20px);color:white;background:var(--navy);border-radius:12px;padding:12px 18px;font-size:12px;z-index:15;pointer-events:none;opacity:0;transition:.2s}#toast.show{opacity:1;transform:translateX(-50%)}@media(min-width:600px){.app{margin:24px auto 0;min-height:calc(100dvh - 24px);border-radius:24px 24px 0 0;border:1px solid #dde5ef}main{min-height:calc(100dvh - 24px)}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}