:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--bg:#f7f8fc;--surface:#fff;--surface-soft:#f0f3f9;--text:#172033;--muted:#6e7b91;--line:#e1e6ef;--accent:#3f5ce8;--accent-soft:#e7ebff;--learning:#f4b840;--learning-soft:#fff1d0;--mastered:#38a96a;--mastered-soft:#dff6e8;--shadow:0 14px 42px #1b2c4c14}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#11141c;--surface:#1a1f2a;--surface-soft:#242b38;--text:#f3f6fb;--muted:#a2afc3;--line:#323b4b;--accent:#9dafef;--accent-soft:#26325c;--learning:#f5c35c;--learning-soft:#493c1f;--mastered:#66c891;--mastered-soft:#1d4932;--shadow:0 14px 42px #00000040}}*{box-sizing:border-box}html{background:var(--bg);min-height:100%}body{background:var(--bg);min-height:100dvh;color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100dvh;padding:max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(22px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left))}.tracker{width:min(100%,1040px);margin:0 auto}.topbar{justify-content:space-between;align-items:flex-start;min-height:66px;display:flex;position:relative}.subject-trigger{max-width:calc(100vw - 120px);color:var(--text);letter-spacing:-.04em;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:9px;padding:0;font-size:clamp(23px,4vw,31px);font-weight:760;display:flex}.subject-trigger span:first-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.year{color:var(--muted);margin:4px 0 0;font-size:13px}.top-actions{align-items:center;gap:8px;display:flex}.percent{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:8px 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h1{letter-spacing:-.025em;margin:0;font-size:20px}.section-head p{color:var(--muted);margin:6px 0 0;font-size:14px}.section-head p span{margin:0 4px}.section-head strong{color:var(--accent);white-space:nowrap;font-size:15px}.progress-bar{background:var(--surface-soft);border-radius:999px;height:10px;margin-top:23px;display:flex;overflow:hidden}.progress-bar span{height:100%;transition:width .2s}.mastered-segment{background:var(--mastered)}.learning-segment{background:var(--learning)}.legend{color:var(--muted);flex-wrap:wrap;gap:10px 18px;margin:18px 3px 20px;font-size:13px;display:flex}.legend span{align-items:center;gap:6px;display:flex}.dot{border-radius:50%;width:8px;height:8px}.neutral{background:#c9d1dd}.learning{background:var(--learning)}.mastered{background:var(--mastered)}.task-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;display:grid}.task-card{aspect-ratio:1;border:1px solid var(--line);min-height:66px;color:var(--text);background:var(--surface);cursor:pointer;border-radius:18px;font-size:clamp(19px,5vw,24px);font-weight:760;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s}.task-card:active{transform:scale(.94)}.task-card:focus-visible,.subject-trigger:focus-visible,.icon-button:focus-visible,.primary-button:focus-visible{outline:3px solid color-mix(in srgb,var(--accent),transparent 55%);outline-offset:3px}.task-card.learning{border-color:color-mix(in srgb,var(--learning),var(--line) 30%);background:var(--learning-soft)}.task-card.mastered{border-color:color-mix(in srgb,var(--mastered),var(--line) 30%);background:var(--mastered-soft);color:color-mix(in srgb,var(--mastered),var(--text) 40%)}.save-row{min-height:46px;color:var(--muted);text-align:center;justify-content:center;align-items:center;gap:10px;padding:18px 0 0;font-size:13px;display:flex}.save-row button{color:var(--accent);cursor:pointer;background:0 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pulse}.skeleton-line{border-radius:8px;width:190px;height:17px}.skeleton-line.title{width:260px;height:30px}.skeleton-card{border-radius:24px;height:135px;margin-top:34px;padding:24px}.skeleton-bar{border-radius:99px;height:10px;margin-top:25px}.skeleton-grid{grid-template-columns:repeat(4,1fr);gap:10px;margin-top:20px;display:grid}.skeleton-task{aspect-ratio:1;border-radius:18px}@keyframes pulse{to{background-position:-200% 0}}.login-shell{width:100%;min-height:100dvh;padding:max(24px,env(safe-area-inset-top)) 20px max(24px,env(safe-area-inset-bottom));grid-template-columns:minmax(0,1fr);place-items:center;display:grid;overflow-x:hidden}.login-card{border:1px solid var(--line);background:var(--surface);width:100%;min-width:0;max-width:420px;box-shadow:var(--shadow);text-align:center;border-radius:28px;padding:34px 28px 28px}.app-mark{color:#fff;background:var(--accent);letter-spacing:-.06em;border-radius:18px;place-items:center;width:58px;height:58px;margin:0 auto 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.18s}.primary-button:active{transform:scale(.98)}.primary-button:disabled{opacity:.7;cursor:wait}.form-error{color:#d34c51;margin:-3px 0 15px;font-size:13px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes sheet-in{0%{opacity:.7;transform:translateY(24px)}}@media (min-width:600px){.app-shell{padding-top:max(36px,env(safe-area-inset-top))}.task-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:12px}.task-card{min-height:88px}.sheet-layer{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;padding:93px 18px 0;display:block}.subject-sheet{width:360px;max-height:560px;box-shadow:var(--shadow);border-radius:18px;margin:0;padding:13px}.sheet-handle{display:none}.subject-sheet h2{margin:5px 8px 9px;font-size:17px}.subject-option{min-height:52px}.skeleton-grid{grid-template-columns:repeat(7,1fr);gap:12px}}@media 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p{margin-top:5px;font-size:13px}.progress-summary{justify-items:end;gap:3px;min-width:64px;display:grid}.progress-summary strong{color:var(--accent);letter-spacing:-.03em;font-size:19px}.progress-summary span{color:var(--muted);font-size:12px;font-weight:650}.progress-bar{height:8px;margin-top:19px}.legend{gap:7px 15px;margin:13px 2px 16px;font-size:12px}.legend span{gap:5px}.dot{width:7px;height:7px}.task-grid{gap:8px}.task-card{border-radius:14px;min-height:52px;font-size:clamp(17px,4vw,20px)}.task-card:hover{border-color:color-mix(in srgb,var(--accent),var(--line) 65%)}.save-row{min-height:36px;padding-top:12px;font-size:12px}.sheet-layer{background:#0c121f59}.subject-sheet{padding:10px 14px max(21px,env(safe-area-inset-bottom));border-radius:22px 22px 0 0}.sheet-handle{width:34px;height:4px;margin-bottom:9px}.subject-option{border-radius:12px;gap:12px;min-height:65px;padding:11px 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(min-width:900px){.task-card{min-height:76px}.progress-section{padding:22px}}.tracker-nav{border:1px solid var(--line);background:var(--surface-soft);border-radius:13px;gap:4px;width:max-content;max-width:100%;margin:2px 0 22px;padding:4px;display:flex}.tracker-nav button{min-height:34px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:center;gap:8px;padding:0 14px;font-size:13px;font-weight:650;display:flex}.tracker-nav button.active{color:var(--text);background:var(--surface);box-shadow:0 1px 3px #14203414}.tracker-nav button span{min-width:20px;color:var(--muted);background:var(--surface-soft);text-align:center;border-radius:20px;padding:2px 6px;font-size:11px}.task-card.selected{outline:2px solid color-mix(in srgb,var(--accent),transparent 40%);outline-offset:2px}.theory-links{border:1px solid var(--line);background:var(--surface);border-radius:16px;margin-top:24px;padding:17px 19px}.theory-links h2{letter-spacing:-.015em;margin:0 0 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button:focus-visible,.quiz-option:focus-visible{outline:3px solid color-mix(in srgb,var(--accent),transparent 55%);outline-offset:2px}.notes-alert{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;align-items:center;gap:9px;margin:0 0 14px;padding:11px 13px;font-size:13px;line-height:1.45;display:flex;position:relative}.notes-alert.error{border-color:color-mix(in srgb,#d34c51,var(--line) 55%);color:#b43b42;background:color-mix(in srgb,#d34c51,var(--surface) 94%)}.notes-alert.success{color:var(--text);background:var(--mastered-soft)}.notes-alert .text-button{color:inherit;cursor:pointer;white-space:nowrap;background:0 0;border:0;margin-left:auto;font-weight:700}.alert-dismiss{color:inherit;cursor:pointer;background:0 0;border:0;place-items:center;margin-left:auto;padding:4px;display:grid}.notes-filters{grid-template-columns:minmax(180px,1.6fr) minmax(135px,1fr) minmax(145px,1fr) auto;gap:8px;margin:15px 0 13px;display:grid}.note-search{border:1px solid var(--line);min-width:0;height:41px;color:var(--muted);background:var(--surface);border-radius:11px;align-items:center;gap:8px;padding:0 11px;display:flex}.note-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent),transparent 88%)}.note-search input{width:100%;min-width:0;color:var(--text);background:0 0;border:0;outline:0;font-size:13px}.note-search input::placeholder{color:var(--muted);opacity:.8}.filter-select select,.replace-choice select{border:1px solid var(--line);width:100%;height:41px;color:var(--text);background:var(--surface);cursor:pointer;border-radius:11px;padding:0 29px 0 11px;font-size:12px}.filter-select select:focus-visible,.replace-choice select:focus-visible{outline:3px solid color-mix(in srgb,var(--accent),transparent 70%);outline-offset:1px}.sort-select{min-width:165px}.note-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.note-card{border:1px solid var(--line);min-width:0;min-height:196px;color:var(--text);background:var(--surface);cursor:pointer;text-align:left;border-radius:16px;flex-direction:column;padding:16px 17px 12px;transition:transform .16s,border-color .16s,box-shadow .16s;display:flex;box-shadow:0 4px 16px #1b2c4c06}.note-card:hover{border-color:color-mix(in srgb,var(--accent),var(--line) 68%);box-shadow:var(--shadow);transform:translateY(-2px)}.note-card-top{justify-content:space-between;align-items:center;gap:10px;display:flex}.note-section{color:var(--accent);text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-weight:750;overflow:hidden}.note-date{color:var(--muted);flex:none;font-size:11px}.note-card h2{letter-spacing:-.025em;margin:13px 0 7px;font-size:17px;line-height:1.3}.note-card>p{min-height:38px;color:var(--muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0;font-size:12px;line-height:1.55;display:-webkit-box;overflow:hidden}.note-card-tags{flex-wrap:wrap;gap:5px;margin:12px 0 11px;display:flex}.note-card-tags span{color:var(--muted);background:var(--surface-soft);border-radius:7px;padding:4px 7px;font-size:10px;font-weight:650}.note-card-bottom{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:10px;font-size:10px;display:flex}.note-card-bottom span{align-items:center;gap:4px;display:inline-flex}.note-card-bottom svg{stroke-width:1.8px}.note-card-bottom .quiz-last{color:var(--accent);margin-left:auto;font-weight:750}.notes-empty{border:1px dashed var(--line);min-height:235px;color:var(--muted);background:var(--surface);text-align:center;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:9px;padding:26px;font-size:13px;display:flex}.notes-empty strong{color:var(--text);font-size:15px}.notes-empty .primary-small{margin-top:7px}.notes-spinner{border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;width:21px;height:21px;animation:.75s linear infinite notes-spin}@keyframes notes-spin{to{transform:rotate(360deg)}}.note-reader{min-width:0}.reader-actions{justify-content:space-between;align-items:center;gap:10px;margin:12px 0 18px;display:flex}.reader-tools{align-items:center;gap:7px;display:flex}.back-button{color:var(--muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:7px;padding:8px 0;font-size:13px;font-weight:650;display:inline-flex}.back-button:hover{color:var(--text)}.icon-tool{border:1px solid 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