:root{--brand: #0f1b33;--accent: #15803d;--bg: #f5f6f8;--surface: #ffffff;--ink: #0f1b33;--ink-2: #3d4659;--muted: #5b6475;--line: #d9dde4;--ok: #15803d;--ok-bg: #e8f5ec;--bad: #b42318;--bad-bg: #fdecea;--warn: #8a5a00;--warn-bg: #fff4dc;--info-bg: #eaf0fb;--bar: #2f7d4f;--focus: #2563eb;--radius: 12px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);color-scheme:light}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;min-height:100dvh;overflow-wrap:anywhere}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.25;margin:0 0 .5em}h1{font-size:1.45rem}h2{font-size:1.2rem}h3{font-size:1.05rem}p{margin:0 0 .8em}a{color:#1d4ed8}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}.app{min-height:100dvh;display:flex;flex-direction:column}.topbar{position:relative;z-index:20;background:var(--surface);border-bottom:1px solid var(--line);padding:calc(8px + var(--safe-top)) max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left));display:flex;align-items:center;gap:12px;flex-wrap:wrap}@media (min-width: 768px){.topbar{position:sticky;top:0}}.topbar .logo{height:34px;width:auto;display:block}.topbar nav{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}.topbar nav a,.topbar nav button{font-size:.95rem;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink);background:none;border:1px solid transparent;min-height:44px;cursor:pointer;font-family:inherit}.topbar nav a.active{background:var(--info-bg);border-color:#c9d6f2}main{width:100%;max-width:920px;margin:0 auto;flex:1;padding:16px max(16px,env(safe-area-inset-right)) calc(32px + var(--safe-bottom)) max(16px,env(safe-area-inset-left))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}.card.tight{padding:12px}.muted{color:var(--muted)}.small{font-size:.9rem}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.row.between{justify-content:space-between}.stack>*+*{margin-top:10px}.grid{display:grid;gap:12px;grid-template-columns:1fr}@media (min-width: 600px){.grid.two{grid-template-columns:1fr 1fr}.grid.three{grid-template-columns:repeat(3,1fr)}}@media (min-width: 768px){.grid.four{grid-template-columns:repeat(4,1fr)}}@media (min-width: 340px) and (max-width: 767px){.grid.four{grid-template-columns:1fr 1fr}.tile .num{font-size:1.5rem}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 18px;border-radius:10px;border:1px solid var(--brand);background:var(--brand);color:#fff;font:600 1rem/1.2 inherit;cursor:pointer;text-decoration:none;text-align:center;max-width:100%}.btn.secondary{background:var(--surface);color:var(--brand)}.btn.ok{background:var(--ok);border-color:var(--ok)}.btn.danger{background:var(--surface);color:var(--bad);border-color:var(--bad)}.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn.small{min-height:40px;padding:6px 12px;font-size:.92rem}.btn.block{width:100%}.btn:disabled{opacity:.55;cursor:not-allowed}label{display:block;font-weight:600;margin-bottom:4px}input[type=text],input[type=password],input[type=number],input[type=date],input[type=search],select,textarea{width:100%;font:inherit;font-size:1rem;padding:11px 12px;border:1px solid #b7bec9;border-radius:10px;background:#fff;color:var(--ink);min-height:48px}textarea{min-height:120px;resize:vertical}.field{margin-bottom:14px}.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;cursor:pointer;padding:6px 0}.check input{width:22px;height:22px;margin-top:2px;flex:none}.alert{border-radius:10px;padding:12px 14px;margin-bottom:14px;border:1px solid}.alert.error{background:var(--bad-bg);border-color:#f3b8b2;color:#7a1b13}.alert.ok{background:var(--ok-bg);border-color:#b5dcc1;color:#0f5229}.alert.warn{background:var(--warn-bg);border-color:#f0d28a;color:#5c3d00}.alert.info{background:var(--info-bg);border-color:#c9d6f2;color:#1e3a6e}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.8rem;font-weight:600;border:1px solid var(--line);background:#f0f2f5;color:var(--ink-2);white-space:nowrap}.badge.ok{background:var(--ok-bg);color:#0f5229;border-color:#b5dcc1}.badge.bad{background:var(--bad-bg);color:#7a1b13;border-color:#f3b8b2}.badge.warn{background:var(--warn-bg);color:#5c3d00;border-color:#f0d28a}.support{background:#f7f8fa;border-left:4px solid var(--accent);padding:12px 14px;border-radius:8px;margin-bottom:12px;white-space:pre-wrap}.stem{font-size:1.05rem;margin-bottom:12px;white-space:pre-wrap}.alts{list-style:none;padding:0;margin:0;display:grid;gap:8px}.alt{width:100%;text-align:left;display:flex;gap:12px;align-items:flex-start;padding:12px;min-height:52px;border:1.5px solid var(--line);border-radius:10px;background:#fff;font:inherit;color:inherit;cursor:pointer}.alt .letter{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:700;background:#eef0f4}.alt.selected{border-color:var(--brand);background:#eef2fa}.alt.selected .letter{background:var(--brand);color:#fff}.alt.correct{border-color:var(--ok);background:var(--ok-bg)}.alt.correct .letter{background:var(--ok);color:#fff}.alt.wrong{border-color:var(--bad);background:var(--bad-bg)}.alt.wrong .letter{background:var(--bad);color:#fff}.alt:disabled{cursor:default}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 12px;border:1px solid var(--line);border-radius:8px;max-width:100%}table.data{border-collapse:collapse;width:100%;font-size:.95rem}table.data th,table.data td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}table.data th{background:#f2f4f7;font-weight:600}.explain{margin-top:12px;padding:12px 14px;border-radius:10px;background:#f7f8fa;border:1px solid var(--line)}.meta{font-size:.85rem;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}.exam-bar{position:sticky;top:0;z-index:15;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin-bottom:12px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:space-between}.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:1.1rem}.timer.low{color:var(--bad)}.qnav{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px}.qnav button{min-height:44px;border-radius:8px;border:1px solid var(--line);background:#fff;font:600 .9rem inherit;cursor:pointer;color:var(--ink)}.qnav button.answered{background:#e6ecf8;border-color:#9fb3dd}.qnav button.current{outline:3px solid var(--brand);outline-offset:1px}.qnav button.hit{background:var(--ok-bg);border-color:var(--ok)}.qnav button.miss{background:var(--bad-bg);border-color:var(--bad)}.login-wrap{min-height:100dvh;display:grid;place-items:center;padding:calc(16px + var(--safe-top)) 16px calc(16px + var(--safe-bottom))}.login-card{width:100%;max-width:420px}.login-card .logo{width:100%;max-width:320px;display:block;margin:0 auto 12px}.pages{display:grid;gap:12px;grid-template-columns:1fr}@media (min-width: 600px){.pages{grid-template-columns:1fr 1fr}}.page-card img{width:100%;border-radius:8px;border:1px solid var(--line);background:#eee}.lines-editor{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.95rem;line-height:1.6;white-space:pre;overflow-x:auto;min-height:320px}.ocr-lines{counter-reset:ln;list-style:none;padding:0;margin:0;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem}.ocr-lines li{counter-increment:ln;padding:2px 0;border-bottom:1px dashed #e4e7ec;white-space:pre-wrap}.ocr-lines li:before{content:counter(ln,decimal-leading-zero) "  ";color:var(--muted)}.score-big{font-size:2.4rem;font-weight:800;line-height:1}.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;margin-bottom:12px;scrollbar-width:thin}.tabs button{flex:none;min-height:44px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font:600 .95rem inherit;cursor:pointer;color:var(--ink)}.tabs button[aria-selected=true]{background:var(--brand);color:#fff;border-color:var(--brand)}.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.tile .num{font-size:1.8rem;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}.tile .lbl{color:var(--ink-2);font-size:.92rem}.tile .unit{color:var(--muted);font-size:.8rem}.chart{position:relative}.chart svg{display:block;width:100%;height:auto}.chart .tip{position:absolute;pointer-events:none;background:var(--ink);color:#fff;font-size:.85rem;padding:6px 8px;border-radius:6px;transform:translate(-50%,-110%);white-space:nowrap}.list-item{padding:12px 0;border-bottom:1px solid var(--line)}.list-item:last-child{border-bottom:0}.modal-back{position:fixed;inset:0;background:#0f1b3380;z-index:50;display:grid;place-items:center;padding:16px;overflow-y:auto}.modal{background:#fff;border-radius:var(--radius);width:100%;max-width:520px;max-height:calc(100dvh - 32px);overflow-y:auto;padding:18px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.spinner{display:inline-block;width:18px;height:18px;border:3px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.spinner{animation-duration:2.4s}}@media (forced-colors: active){.alt.selected,.alt.correct,.alt.wrong{border-width:3px}}.topbar{flex-wrap:nowrap}.topbar .account{margin-left:auto;display:flex;gap:4px}.topbar .account a,.topbar .account button{font-size:.92rem;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink);background:none;border:1px solid transparent;min-height:44px;cursor:pointer;font-family:inherit}.mainnav{display:flex;gap:4px;overflow-x:auto;background:var(--surface);border-bottom:1px solid var(--line);padding:4px max(12px,env(safe-area-inset-left));scrollbar-width:none;-webkit-overflow-scrolling:touch}.mainnav::-webkit-scrollbar{display:none}.mainnav a{flex:none;padding:10px 12px;min-height:44px;display:inline-flex;align-items:center;border-radius:8px;text-decoration:none;color:var(--ink-2);font-weight:600;font-size:.95rem;border-bottom:3px solid transparent}.mainnav a.active{color:var(--brand);border-bottom-color:var(--accent);background:#f2f6f3}@media (min-width: 768px){.mainnav{position:sticky;top:62px;z-index:19;justify-content:center}}.module-card:hover{border-color:#9fb3dd}.module-card:focus-visible{outline:3px solid var(--focus)}.filters{display:grid;gap:12px;grid-template-columns:1fr}@media (min-width: 700px){.filters{grid-template-columns:1fr 1fr}}.filter-group{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:0;min-width:0}.filter-group legend{font-weight:700;padding:0 4px}.meter{height:8px;background:#eceff3;border-radius:4px;overflow:hidden;margin:6px 0}.meter span{display:block;height:100%;background:var(--bar);border-radius:4px}.tile .num{overflow-wrap:anywhere}