:root{color-scheme:light;--background: #f5f5f4;--background-elevated: #fafaf9;--surface: #ffffff;--surface-alt: #fafaf9;--border: #e7e5e4;--border-strong: #d6d3d1;--text: #1c1917;--text-muted: #57534e;--text-subtle: #8a8580;--on-primary: #ffffff;--primary: #ea580c;--primary-dark: #c2410c;--primary-soft: #fff1e7;--primary-glow: rgb(234 88 12 / .18);--success: #047857;--success-soft: #ecfdf5;--danger: #b91c1c;--danger-soft: #fef2f2;--warning: #b45309;--warning-soft: #fffbeb;--info: #1d4ed8;--info-soft: #eff6ff;--header-from: #f97316;--header-to: #ea580c;--header-deep: #c2410c;--chart-correct: #047857;--chart-wrong: #b91c1c;--chart-single: #ea580c;--chart-neutral: #1c1917;--chart-track-dark: #292524;--mastery-1: #fb923c;--mastery-2: #ea580c;--mastery-3: #c2410c;--mastery-4: #7c2d12;--grade-1: #86b6ef;--grade-2: #5598e7;--grade-3: #2a78d6;--grade-4: #184f95;--grid: #e7e5e4;--cat-arch: #c026d3;--cat-arch-soft: #fdf4ff;--cat-history: #9a3412;--cat-history-soft: #fdf2ec;--cat-planning: #65a30d;--cat-planning-soft: #f7fee7;--cat-practice: #e11d48;--cat-practice-soft: #fff1f2;--cat-estimating: #ea580c;--cat-estimating-soft: #fff1e7;--cat-materials: #0d9488;--cat-materials-soft: #f0fdfa;--cat-structures: #4f46e5;--cat-structures-soft: #eef2ff;--cat-site: #b45309;--cat-site-soft: #fffbeb;--cat-finishes: #db2777;--cat-finishes-soft: #fdf2f8;--cat-safety: #dc2626;--cat-safety-soft: #fef2f2;--cat-surveying: #0891b2;--cat-surveying-soft: #ecfeff;--cat-geo: #a16207;--cat-geo-soft: #fefce8;--cat-water: #2563eb;--cat-water-soft: #eff6ff;--cat-transport: #7c3aed;--cat-transport-soft: #f5f3ff;--cat-mgmt: #475569;--cat-mgmt-soft: #f8fafc;--cat-codes: #0f766e;--cat-codes-soft: #f0fdfa;--cat-other: #78716c;--cat-other-soft: #f5f5f4;--radius-sm: 8px;--radius: 14px;--radius-lg: 18px;--radius-xl: 24px;--shadow: 0 1px 2px rgb(0 0 0 / .04), 0 4px 12px rgb(0 0 0 / .04);--shadow-md: 0 2px 4px rgb(0 0 0 / .04), 0 8px 24px rgb(0 0 0 / .08);--shadow-lg: 0 8px 16px rgb(0 0 0 / .06), 0 20px 40px rgb(0 0 0 / .08);--shadow-card: 0 1px 2px rgb(0 0 0 / .04), 0 6px 16px rgb(0 0 0 / .05);--max-width: 1040px;--nav-h: 56px;--bottom-nav-h: 64px;--ease: cubic-bezier(.22, 1, .36, 1)}:root[data-theme=dark]{color-scheme:dark;--background: #0c0a09;--background-elevated: #141110;--surface: #1c1917;--surface-alt: #262322;--border: #302c2a;--border-strong: #44403c;--text: #fafaf9;--text-muted: #b8b2ad;--text-subtle: #8a8580;--primary: #fb923c;--primary-dark: #f97316;--primary-soft: #2a1b10;--primary-glow: rgb(251 146 60 / .16);--success: #34d399;--success-soft: #0c2620;--danger: #f87171;--danger-soft: #2a1416;--warning: #fbbf24;--warning-soft: #2a1f0a;--info: #60a5fa;--info-soft: #0f1c2e;--header-from: #c2410c;--header-to: #9a3412;--header-deep: #7c2d12;--chart-correct: #199e70;--chart-wrong: #e66767;--chart-single: #f97316;--chart-neutral: #d6d3d1;--chart-track-dark: #090706;--mastery-1: #9a3412;--mastery-2: #c2410c;--mastery-3: #f97316;--mastery-4: #fdba74;--grade-1: #184f95;--grade-2: #256abf;--grade-3: #3987e5;--grade-4: #86b6ef;--grid: #302c2a;--cat-arch: #f0abfc;--cat-arch-soft: #2a1226;--cat-history: #fdba74;--cat-history-soft: #251507;--cat-planning: #a3e635;--cat-planning-soft: #17240a;--cat-practice: #fb7185;--cat-practice-soft: #2a1218;--cat-estimating: #fb923c;--cat-estimating-soft: #2a1b10;--cat-materials: #2dd4bf;--cat-materials-soft: #0f2a26;--cat-structures: #818cf8;--cat-structures-soft: #1e1b3a;--cat-site: #fbbf24;--cat-site-soft: #2a1f0a;--cat-finishes: #f472b6;--cat-finishes-soft: #2a1520;--cat-safety: #f87171;--cat-safety-soft: #2a1416;--cat-surveying: #22d3ee;--cat-surveying-soft: #0c2428;--cat-geo: #facc15;--cat-geo-soft: #2a2410;--cat-water: #60a5fa;--cat-water-soft: #0f1c2e;--cat-transport: #a78bfa;--cat-transport-soft: #1e1830;--cat-mgmt: #94a3b8;--cat-mgmt-soft: #1a1f26;--cat-codes: #2dd4bf;--cat-codes-soft: #0f2a26;--cat-other: #a8a29e;--cat-other-soft: #262322;--shadow: 0 1px 2px rgb(0 0 0 / .35), 0 4px 16px rgb(0 0 0 / .28);--shadow-md: 0 4px 12px rgb(0 0 0 / .4);--shadow-lg: 0 12px 32px rgb(0 0 0 / .45);--shadow-card: 0 1px 2px rgb(0 0 0 / .3), 0 6px 18px rgb(0 0 0 / .25)}@media(prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark;--background: #0c0a09;--background-elevated: #141110;--surface: #1c1917;--surface-alt: #262322;--border: #302c2a;--border-strong: #44403c;--text: #fafaf9;--text-muted: #b8b2ad;--text-subtle: #8a8580;--primary: #fb923c;--primary-dark: #f97316;--primary-soft: #2a1b10;--primary-glow: rgb(251 146 60 / .16);--success: #34d399;--success-soft: #0c2620;--danger: #f87171;--danger-soft: #2a1416;--warning: #fbbf24;--warning-soft: #2a1f0a;--info: #60a5fa;--info-soft: #0f1c2e;--header-from: #c2410c;--header-to: #9a3412;--header-deep: #7c2d12;--chart-correct: #199e70;--chart-wrong: #e66767;--chart-single: #f97316;--chart-neutral: #d6d3d1;--chart-track-dark: #090706;--mastery-1: #9a3412;--mastery-2: #c2410c;--mastery-3: #f97316;--mastery-4: #fdba74;--grade-1: #184f95;--grade-2: #256abf;--grade-3: #3987e5;--grade-4: #86b6ef;--grid: #302c2a;--cat-arch: #f0abfc;--cat-arch-soft: #2a1226;--cat-history: #fdba74;--cat-history-soft: #251507;--cat-planning: #a3e635;--cat-planning-soft: #17240a;--cat-practice: #fb7185;--cat-practice-soft: #2a1218;--cat-estimating: #fb923c;--cat-estimating-soft: #2a1b10;--cat-materials: #2dd4bf;--cat-materials-soft: #0f2a26;--cat-structures: #818cf8;--cat-structures-soft: #1e1b3a;--cat-site: #fbbf24;--cat-site-soft: #2a1f0a;--cat-finishes: #f472b6;--cat-finishes-soft: #2a1520;--cat-safety: #f87171;--cat-safety-soft: #2a1416;--cat-surveying: #22d3ee;--cat-surveying-soft: #0c2428;--cat-geo: #facc15;--cat-geo-soft: #2a2410;--cat-water: #60a5fa;--cat-water-soft: #0f1c2e;--cat-transport: #a78bfa;--cat-transport-soft: #1e1830;--cat-mgmt: #94a3b8;--cat-mgmt-soft: #1a1f26;--cat-codes: #2dd4bf;--cat-codes-soft: #0f2a26;--cat-other: #a8a29e;--cat-other-soft: #262322;--shadow: 0 1px 2px rgb(0 0 0 / .35), 0 4px 16px rgb(0 0 0 / .28);--shadow-md: 0 4px 12px rgb(0 0 0 / .4);--shadow-lg: 0 12px 32px rgb(0 0 0 / .45);--shadow-card: 0 1px 2px rgb(0 0 0 / .3), 0 6px 18px rgb(0 0 0 / .25)}}*,*:before,*:after{box-sizing:border-box}body,h1,h2,h3,p,figure,ul,ol{margin:0;padding:0}ul,ol{list-style:none}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{min-height:100dvh;background:radial-gradient(1200px 500px at 10% -10%,var(--primary-glow),transparent 55%),radial-gradient(900px 420px at 100% 0%,rgb(13 148 136 / .06),transparent 50%),var(--background);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}button{font:inherit;color:inherit;cursor:pointer}a{color:var(--primary-dark);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}.app{display:flex;flex-direction:column;min-height:100dvh;overflow-x:clip}.topbar{background:linear-gradient(135deg,var(--header-from) 0%,var(--header-to) 55%,var(--header-deep) 100%);color:#fff;padding:0;position:sticky;top:0;z-index:30;box-shadow:0 1px #00000014,0 8px 24px #ea580c2e}.topbar-inner{max-width:var(--max-width);margin:0 auto;min-height:var(--nav-h);padding:10px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;letter-spacing:-.02em;font-size:18px}.brand:hover{text-decoration:none}.brand-mark{width:34px;height:34px;border-radius:10px;background:#ffffff2e;border:1px solid rgb(255 255 255 / .22);display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:-.04em;box-shadow:inset 0 1px #ffffff40}.brand-text{display:flex;flex-direction:column;line-height:1.1;gap:1px}.brand-name{font-size:17px;font-weight:800;letter-spacing:-.03em}.brand-tag{font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;opacity:.8}.nav{display:flex;gap:4px;align-items:center;flex-wrap:wrap}.nav a{color:#fff;padding:8px 14px;border-radius:999px;font-size:14px;font-weight:600;opacity:.88;display:inline-flex;align-items:center;gap:6px;transition:background .15s var(--ease),opacity .15s var(--ease)}.nav a:hover{text-decoration:none;background:#ffffff24;opacity:1}.nav a.active{background:#ffffff38;opacity:1}.nav a svg{opacity:.95}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:40px;min-height:40px;padding:0 10px;border-radius:999px;border:1px solid rgb(255 255 255 / .28);background:#ffffff24;color:#fff;font-size:12px;font-weight:700;letter-spacing:.02em;transition:background .15s var(--ease),border-color .15s var(--ease)}.theme-toggle:hover{background:#ffffff3d;border-color:#fff6}.theme-toggle:active{transform:scale(.97)}.theme-toggle .theme-label{display:none}.theme-toggle-wrap{margin-left:auto;display:flex;align-items:center;gap:8px}.nav{margin-left:0}@media(min-width:721px){.theme-toggle .theme-label{display:inline}.theme-toggle{padding:0 12px 0 10px}}.main{flex:1;width:100%;max-width:var(--max-width);margin:0 auto;padding:28px 20px 80px}.bottom-nav{display:none;position:fixed;left:0;right:0;bottom:0;z-index:40;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--border);padding:6px 8px calc(6px + env(safe-area-inset-bottom,0px));box-shadow:0 -8px 24px #0000000f}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:52px;border-radius:12px;color:var(--text-subtle);font-size:11px;font-weight:700;letter-spacing:.02em;text-decoration:none;transition:color .15s var(--ease),background .15s var(--ease)}.bottom-nav a:hover{text-decoration:none;color:var(--text);background:var(--surface-alt)}.bottom-nav a.active{color:var(--primary);background:var(--primary-soft)}.page-head{margin-bottom:22px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-subtle)}h1{font-size:clamp(24px,4vw,30px);line-height:1.15;letter-spacing:-.03em;font-weight:800}h2{font-size:17px;font-weight:700;letter-spacing:-.015em}h3{font-size:15px;font-weight:700;letter-spacing:-.01em}.lede{color:var(--text-muted);margin-top:8px;max-width:58ch;font-size:15px}.caption{color:var(--text-subtle);font-size:13px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-card)}.stack{display:flex;flex-direction:column;gap:18px}.grid-2{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.hero{position:relative;overflow:hidden;border-radius:var(--radius-xl);padding:22px 22px 20px;background:linear-gradient(135deg,var(--header-from),var(--header-to) 60%,var(--header-deep));color:#fff;box-shadow:var(--shadow-md),0 0 0 1px #ffffff14 inset}.hero:after{content:"";position:absolute;inset:auto -20% -60% 40%;height:160%;background:radial-gradient(circle,rgb(255 255 255 / .18),transparent 60%);pointer-events:none}.hero>*{position:relative;z-index:1}.hero .eyebrow{color:#ffffffc7}.hero h1{color:#fff;margin-top:4px}.hero .lede{color:#ffffffe0;margin-top:8px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.hero .btn{background:#fff;color:var(--primary-dark);border-color:transparent;box-shadow:0 2px 8px #0000001f}.hero .btn:hover{filter:none;background:#fff7ed}.hero .btn.secondary{background:#ffffff24;color:#fff;border-color:#ffffff47;box-shadow:none}.hero .btn.secondary:hover{background:#ffffff38}.summary-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.summary-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 12px;box-shadow:var(--shadow);text-align:center;min-width:0}.summary-tile .value{font-size:22px;font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1;display:inline-flex;align-items:center;justify-content:center;gap:4px}.summary-tile .value svg{color:var(--primary)}.summary-tile .name{margin-top:4px;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text-subtle)}.summary-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow);color:inherit;transition:border-color .15s var(--ease),transform .15s var(--ease)}.summary-link:hover{text-decoration:none;border-color:var(--primary);transform:translateY(-1px)}.summary-link-left{display:flex;align-items:center;gap:12px;min-width:0}.summary-link-icon{width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;flex:none}.summary-link strong{display:block;font-size:15px}.summary-link .caption{margin-top:1px}.summary-link-chevron{color:var(--text-subtle);flex:none}.cat-tabs-wrap{position:sticky;top:calc(var(--nav-h) + 4px);z-index:15;margin:0 -4px;padding:4px;background:linear-gradient(to bottom,var(--background) 70%,transparent)}.cat-tabs{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:none;-webkit-overflow-scrolling:touch}.cat-tabs::-webkit-scrollbar{display:none}.cat-tab{flex:none;display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 14px 0 10px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-muted);font-size:13px;font-weight:600;box-shadow:var(--shadow);transition:border-color .15s var(--ease),background .15s var(--ease),color .15s var(--ease),transform .15s var(--ease)}.cat-tab:hover{border-color:var(--border-strong);color:var(--text)}.cat-tab[aria-selected=true]{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);box-shadow:0 0 0 1px var(--primary-glow)}.cat-tab .count{font-size:11px;font-weight:700;font-variant-numeric:tabular-nums;padding:1px 7px;border-radius:999px;background:var(--surface-alt);border:1px solid var(--border);color:var(--text-subtle)}.cat-tab[aria-selected=true] .count{background:#ffffff8c;border-color:transparent;color:var(--primary-dark)}.cat-tab-icon{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:var(--surface-alt);color:var(--text-muted)}.cat-tab[aria-selected=true] .cat-tab-icon{background:color-mix(in srgb,var(--primary) 18%,transparent);color:var(--primary-dark)}.cat-tab-icon.is-tinted{background:var(--soft, var(--surface-alt));color:var(--accent, var(--text-muted))}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:2px}.section-head h2{display:flex;align-items:center;gap:10px}.deck-section{gap:12px;margin-top:12px}#decks>.deck-section+.deck-section{margin-top:28px}.section-icon{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:var(--soft, var(--surface-alt));color:var(--accent, var(--primary));flex:none}.deck-list{display:grid;gap:14px;grid-template-columns:minmax(0,1fr)}.deck{position:relative;display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-card);color:inherit;overflow:hidden;height:100%;transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}.deck:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent, var(--primary));opacity:.85}.deck:hover{text-decoration:none;border-color:color-mix(in srgb,var(--accent, var(--primary)) 55%,var(--border));transform:translateY(-2px);box-shadow:var(--shadow-md)}.deck:active{transform:translateY(0)}.deck-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.deck-identity{display:flex;align-items:flex-start;gap:12px;min-width:0}.deck-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--soft, var(--primary-soft));color:var(--accent, var(--primary));flex:none;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent, var(--primary)) 15%,transparent)}.deck-icon svg{width:22px;height:22px}.deck-title-block{min-width:0;display:flex;flex-direction:column;gap:2px}.deck-cat{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent, var(--text-subtle))}.deck h3{line-height:1.25}.deck .caption{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.chip{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700;background:var(--surface-alt);border:1px solid var(--border);color:var(--text-muted);white-space:nowrap;flex:none}.chip.due{background:var(--primary-soft);border-color:color-mix(in srgb,var(--primary) 45%,var(--border));color:var(--primary-dark)}.chip.clear{background:var(--success-soft);border-color:color-mix(in srgb,var(--success) 40%,var(--border));color:var(--success)}.meter{height:7px;border-radius:999px;background:var(--surface-alt);border:1px solid var(--border);overflow:hidden}.meter>span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-dark));border-radius:999px;transition:width .35s var(--ease)}.deck-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--text-subtle)}.deck-meta .dot,.dot{width:3px;height:3px;border-radius:50%;background:var(--border-strong)}.deck-cta{display:inline-flex;align-items:center;gap:6px;margin-top:auto;font-size:13px;font-weight:700;color:var(--primary-dark)}.deck:hover .deck-cta{gap:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:12px;border:1px solid transparent;background:var(--primary);color:var(--on-primary);font-weight:600;text-decoration:none;transition:filter .15s var(--ease),background .15s var(--ease),border-color .15s var(--ease),transform .12s var(--ease)}.btn:hover{text-decoration:none;filter:brightness(1.05)}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.55;cursor:not-allowed;filter:none;transform:none}.btn.secondary{background:var(--surface);color:var(--text);border-color:var(--border-strong)}.btn.ghost{background:transparent;color:var(--text-muted);border-color:var(--border)}.btn.danger{background:var(--danger-soft);color:var(--danger);border-color:var(--danger)}.btn.block{width:100%}.btn.compact{min-height:32px;padding:0 10px;font-size:12px;border-radius:8px}.btn-row{display:flex;gap:10px;flex-wrap:wrap}.study{display:flex;flex-direction:column;gap:18px;max-width:720px;margin:0 auto}.study-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.study-head h1{font-size:18px;font-weight:700;letter-spacing:-.02em}.session-pills{display:flex;flex-wrap:wrap;gap:8px}.session-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-size:12px;font-weight:600;color:var(--text-muted);box-shadow:var(--shadow)}.session-pill strong{color:var(--text);font-variant-numeric:tabular-nums}.progress-rail{height:6px;border-radius:999px;background:var(--border);overflow:hidden;box-shadow:inset 0 1px 2px #0000000a}.progress-rail>span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-dark));border-radius:999px;transition:width .25s var(--ease)}.study-focus-dimmer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:radial-gradient(circle at 50% 38%,#1c191780 0,#0c0a09e0 68%,#050403f0);backdrop-filter:blur(2px) saturate(.55);-webkit-backdrop-filter:blur(2px) saturate(.55);cursor:pointer;animation:lights-down .28s var(--ease) both}.study-focus-stage{display:flex;flex-direction:column;gap:18px;position:relative}.study-lights-off .study-focus-stage{z-index:61}.focus-toolbar{min-height:54px;padding:8px 10px 8px 14px;display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid var(--border);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:var(--shadow-card)}.focus-toolbar-copy{min-width:0;display:flex;align-items:center;gap:10px}.focus-toolbar-copy>span:last-child{min-width:0;display:flex;flex-direction:column;line-height:1.25}.focus-toolbar-copy strong{font-size:13px;font-weight:800}.focus-toolbar-copy small{margin-top:2px;color:var(--text-subtle);font-size:11px;font-weight:500}.focus-toolbar-icon{flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:11px;color:var(--primary);background:var(--primary-soft)}.focus-toggle{flex:none;min-height:38px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:12px;border:1px solid var(--border-strong);background:var(--surface-alt);color:var(--text-muted);font-size:12px;font-weight:800;transition:color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease),transform .12s var(--ease)}.focus-toggle:hover{color:var(--text);border-color:var(--primary);background:var(--primary-soft)}.focus-toggle:active{transform:scale(.98)}.focus-toggle.active{color:#fff;border-color:#ffffff3d;background:linear-gradient(135deg,var(--header-from),var(--header-to));box-shadow:0 8px 22px #ea580c40}.focus-toggle kbd{min-width:20px;height:20px;padding:0 5px;display:inline-grid;place-items:center;border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;background:var(--surface);color:var(--text-subtle);font:700 10px/1 ui-sans-serif,system-ui,sans-serif}.focus-toggle.active kbd{color:#ffffffdb;border-color:#ffffff3d;background:#ffffff24}.study-lights-off .study-focus-stage{animation:focus-stage-in .3s var(--ease) both}.study-lights-off .focus-toolbar,.study-lights-off .flashcard,.study-lights-off .explanation,.study-lights-off .grade-panel{border-color:color-mix(in srgb,var(--primary) 24%,var(--border));box-shadow:0 0 0 1px #ffffff0a,0 24px 70px #0000006b,0 0 80px #ea580c14}@keyframes lights-down{0%{opacity:0}to{opacity:1}}@keyframes focus-stage-in{0%{transform:scale(.992)}to{transform:scale(1)}}.flashcard{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:28px 24px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.flashcard:before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--header-from),var(--header-to))}.flashcard-label{display:inline-flex;align-items:center;gap:6px;margin-bottom:14px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-subtle)}.prompt{font-size:clamp(18px,2.6vw,22px);line-height:1.4;font-weight:600;letter-spacing:-.015em}.options{display:flex;flex-direction:column;gap:10px;margin-top:22px}.option{display:flex;align-items:center;gap:12px;text-align:left;width:100%;min-height:54px;padding:12px 16px;border-radius:14px;border:1.5px solid var(--border);background:var(--surface-alt);color:var(--text);transition:border-color .15s var(--ease),background .15s var(--ease),transform .12s var(--ease),box-shadow .15s var(--ease)}.option:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface);box-shadow:var(--shadow);transform:translateY(-1px)}.option:disabled{cursor:default}.option .key{flex:none;width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:var(--surface);border:1px solid var(--border);font-size:12px;font-weight:800;color:var(--text-subtle);font-variant-numeric:tabular-nums}.option .label{flex:1;font-weight:500}.option .mark{flex:none;width:28px;height:28px;border-radius:999px;display:grid;place-items:center;font-weight:800}.option.correct{background:var(--success-soft);border-color:var(--success);box-shadow:0 0 0 1px color-mix(in srgb,var(--success) 25%,transparent)}.option.correct .key{background:var(--success);border-color:var(--success);color:#fff}.option.correct .mark{background:var(--success);color:#fff}.option.wrong{background:var(--danger-soft);border-color:var(--danger)}.option.wrong .key{background:var(--danger);border-color:var(--danger);color:#fff}.option.wrong .mark{background:var(--danger);color:#fff}.explanation{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow);border-left:4px solid var(--info)}.explanation .eyebrow{margin-bottom:6px;color:var(--info)}.explanation p{color:var(--text-muted);font-size:15px;line-height:1.55}.grade-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;box-shadow:var(--shadow-card)}.grade-panel>.caption{margin-bottom:12px;text-align:center}.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.grades.single{grid-template-columns:minmax(160px,220px);justify-content:center}.grade-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:72px;border-radius:14px;border:1.5px solid var(--border-strong);background:var(--surface-alt);padding:8px 4px;transition:transform .12s var(--ease),background .15s var(--ease),border-color .15s var(--ease)}.grade-btn:hover{transform:translateY(-1px)}.grade-btn:active{transform:scale(.98)}.grade-btn.again{background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 50%,var(--border));color:var(--danger)}.grade-btn.hard{background:var(--warning-soft);border-color:color-mix(in srgb,var(--warning) 45%,var(--border));color:var(--warning)}.grade-btn.good{background:var(--success-soft);border-color:color-mix(in srgb,var(--success) 45%,var(--border));color:var(--success)}.grade-btn.easy{background:var(--info-soft);border-color:color-mix(in srgb,var(--info) 45%,var(--border));color:var(--info)}.grade-btn strong{font-size:14px;font-weight:800}.grade-btn span{font-size:11px;color:var(--text-subtle);font-weight:600}.grade-btn.again span,.grade-btn.hard span,.grade-btn.good span,.grade-btn.easy span{color:inherit;opacity:.8}.grade-btn .key-hint{font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;opacity:.65}.study-hint{text-align:center}.stat-row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-card);position:relative;overflow:hidden}.stat:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--primary),var(--primary-dark));opacity:.7}.stat .value{font-size:28px;font-weight:800;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums}.stat .name{font-size:13px;color:var(--text-subtle);margin-top:4px;font-weight:600}.chart-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--text-muted)}.legend span{display:inline-flex;align-items:center;gap:6px}.swatch{width:10px;height:10px;border-radius:3px;flex:none}.swatch-dark{background:var(--chart-neutral)}.bars{display:flex;align-items:flex-end;gap:4px}.col{flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:stretch;gap:4px;border-radius:var(--radius-sm);padding:4px 2px;cursor:default}.col:hover,.col.hovered{background:var(--surface-alt)}.col-stack{height:104px;display:flex;flex-direction:column;justify-content:flex-end;gap:2px}.seg{border-radius:3px 3px 0 0;min-height:3px}.seg:last-child{border-radius:3px}.seg.correct{background:var(--chart-correct)}.seg.wrong,.swatch-hatched{background-color:var(--chart-wrong);background-image:repeating-linear-gradient(45deg,rgb(255 255 255 / .32) 0 2px,transparent 2px 5px)}.seg.single{background:linear-gradient(180deg,var(--primary),var(--primary-dark));border-radius:3px}.seg.neutral{background:var(--chart-neutral);border-radius:3px}.seg.blank{height:3px;background:var(--border);border-radius:3px}.col-label{text-align:center;font-size:11px;color:var(--text-subtle);font-variant-numeric:tabular-nums;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.col-label.today{color:var(--text);font-weight:700}.col-value{text-align:center;font-size:11px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-muted);min-height:16px}.chart-note{margin-top:12px}.hourly-scroll{overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}.hourly-bars{min-width:720px}.stat-bar-rows{display:flex;flex-direction:column;gap:12px}.stat-bar-row{display:grid;grid-template-columns:1fr auto;gap:4px 12px;align-items:baseline}.stat-bar-row .name{font-size:14px;font-weight:600}.stat-bar-row .hint{font-size:12px;color:var(--text-subtle)}.stat-bar-row .count{font-variant-numeric:tabular-nums;font-weight:700;font-size:14px}.stat-bar-row .track{grid-column:1 / -1;height:10px;border-radius:999px;background:var(--surface-alt);border:1px solid var(--border);overflow:hidden}.stat-bar-row .track>span{display:block;height:100%;border-radius:999px}.stat-bar-row .dark-track{background:var(--chart-track-dark);border-color:var(--chart-track-dark)}.neutral-fill{background:var(--chart-neutral)}.stat-bar-row .track>.outcome-total{display:flex;border-radius:999px;overflow:hidden}.outcome-total>i{display:block;min-width:2px;height:100%}.outcome-correct{background:var(--chart-correct)}.outcome-wrong{background-color:var(--chart-wrong);background-image:repeating-linear-gradient(45deg,rgb(255 255 255 / .32) 0 2px,transparent 2px 5px)}.review-calendar{overflow:hidden}.calendar-head{align-items:flex-end}.calendar-head .eyebrow{color:var(--primary-dark);margin-bottom:3px}.calendar-nav{display:grid;grid-template-columns:36px minmax(150px,auto) 36px;align-items:center;gap:6px}.calendar-nav strong{text-align:center;font-size:14px}.calendar-nav button{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--border);background:var(--surface-alt);color:var(--text);font-size:17px}.calendar-nav button:hover:not(:disabled){border-color:var(--primary);color:var(--primary-dark)}.calendar-nav button:disabled{opacity:.35;cursor:not-allowed}.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:1px;padding:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.calendar-weekday{min-width:0;padding:8px 4px;background:var(--surface-alt);color:var(--text-subtle);text-align:center;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.calendar-day{position:relative;min-width:0;min-height:72px;padding:8px;border:0;background:var(--surface);color:var(--text-muted);text-align:left;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start}.calendar-day:hover,.calendar-day:focus-visible{z-index:1;outline:2px solid var(--primary);outline-offset:-2px}.calendar-day.outside{opacity:.42}.calendar-day.today{box-shadow:inset 0 0 0 2px var(--primary)}.calendar-day.level-1{background:color-mix(in srgb,var(--primary) 10%,var(--surface))}.calendar-day.level-2{background:color-mix(in srgb,var(--primary) 20%,var(--surface))}.calendar-day.level-3{background:color-mix(in srgb,var(--primary) 34%,var(--surface))}.calendar-day.level-4{background:color-mix(in srgb,var(--primary) 52%,var(--surface));color:var(--text)}.calendar-date{font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}.calendar-due{display:inline-flex;align-items:baseline;gap:3px;color:var(--primary-dark);font-size:11px}.calendar-due strong{font-size:15px;font-variant-numeric:tabular-nums}.calendar-foot{margin-top:12px}.empty{text-align:center;padding:48px 20px;color:var(--text-muted);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-card);max-width:480px;margin:0 auto}.empty .icon{width:64px;height:64px;margin:0 auto 14px;border-radius:20px;display:grid;place-items:center;font-size:28px;background:var(--primary-soft);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--primary) 20%,transparent)}.empty h2{margin-bottom:8px;color:var(--text)}.notice{padding:12px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-alt);color:var(--text-muted);font-size:14px}.notice.error{background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}.notice.ok{background:var(--success-soft);border-color:var(--success);color:var(--success)}.footer-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between;padding-top:8px}.loading-block{display:flex;flex-direction:column;gap:12px;padding:20px 0}.skeleton{height:14px;border-radius:8px;background:linear-gradient(90deg,var(--surface-alt) 0%,var(--border) 50%,var(--surface-alt) 100%);background-size:200% 100%;animation:shimmer 1.2s ease-in-out infinite}.skeleton.lg{height:88px;border-radius:var(--radius-lg)}@keyframes shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}.form{display:flex;flex-direction:column;gap:14px;max-width:420px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;font-weight:600;color:var(--text-muted)}.field input{min-height:48px;padding:0 14px;border-radius:12px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.tabs{display:inline-flex;padding:3px;gap:3px;background:var(--surface-alt);border:1px solid var(--border);border-radius:999px}.tabs button{border:0;background:transparent;border-radius:999px;padding:8px 16px;font-size:14px;font-weight:600;color:var(--text-muted);min-height:40px}.tabs button[aria-selected=true]{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap}th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-subtle);font-weight:700}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}tbody tr:last-child td{border-bottom:0}tbody tr:hover td{background:var(--surface-alt)}details.table-toggle>summary{cursor:pointer;font-size:13px;color:var(--text-muted);margin-top:12px;font-weight:600}.heatmap-card{overflow:hidden}.heatmap-legend{display:inline-flex;align-items:center;gap:4px}.heatmap-legend .heatmap-cell{width:11px;height:11px;pointer-events:none}.heatmap-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}.heatmap-frame{display:inline-flex;flex-direction:column;gap:6px;min-width:min-content}.heatmap-months{display:grid;gap:3px;font-size:10px;color:var(--text-subtle);font-weight:600;height:14px}.heatmap-month{overflow:hidden;white-space:nowrap}.heatmap-body{display:flex;gap:6px;align-items:flex-start}.heatmap-weekdays{display:grid;grid-template-rows:repeat(7,12px);gap:3px;width:28px;flex:none;font-size:10px;color:var(--text-subtle);font-weight:600;line-height:12px}.heatmap-grid{display:grid;gap:3px}.heatmap-week{display:grid;grid-template-rows:repeat(7,12px);gap:3px}.heatmap-cell{width:12px;height:12px;border-radius:2px;border:1px solid transparent;padding:0;display:block;cursor:default;transition:outline .1s var(--ease)}button.heatmap-cell:hover,button.heatmap-cell:focus-visible{outline:2px solid var(--primary);outline-offset:1px;z-index:1}.heatmap-cell.is-today{box-shadow:0 0 0 1px var(--text)}.heatmap-cell.level-0{background:var(--surface-alt);border-color:var(--border)}.heatmap-cell.level-1{background:#ffedd5;border-color:color-mix(in srgb,#fdba74 40%,transparent)}.heatmap-cell.level-2{background:#fdba74;border-color:transparent}.heatmap-cell.level-3{background:#f97316;border-color:transparent}.heatmap-cell.level-4{background:#c2410c;border-color:transparent}:root[data-theme=dark] .heatmap-cell.level-0{background:#1c1917;border-color:#302c2a}:root[data-theme=dark] .heatmap-cell.level-1{background:#431407;border-color:transparent}:root[data-theme=dark] .heatmap-cell.level-2{background:#9a3412;border-color:transparent}:root[data-theme=dark] .heatmap-cell.level-3{background:#ea580c;border-color:transparent}:root[data-theme=dark] .heatmap-cell.level-4{background:#fb923c;border-color:transparent}.heatmap-foot{margin-top:12px}.app-banner{background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.app-banner-inner{max-width:var(--max-width);margin:0 auto;padding:10px 20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}.app-banner-copy{display:flex;flex-direction:column;gap:2px;min-width:0}.app-banner-copy strong{font-size:14px}.app-banner-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.app-banner-cta{min-height:40px;padding:0 14px;font-size:14px}.app-banner-dismiss{min-height:40px;padding:0 12px;font-size:13px}.app-promo-card{display:flex;gap:16px;align-items:flex-start;padding:20px;border-radius:var(--radius-xl);border:1px solid var(--border);background:linear-gradient(135deg,color-mix(in srgb,var(--primary-soft) 80%,var(--surface)),var(--surface));box-shadow:var(--shadow-card)}.app-promo-card.is-compact{padding:16px}.app-promo-badge{width:48px;height:48px;border-radius:14px;flex:none;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--header-from),var(--header-deep));box-shadow:0 4px 12px var(--primary-glow)}.app-promo-body{min-width:0;flex:1;display:flex;flex-direction:column;gap:8px}.app-promo-body h2{font-size:18px;letter-spacing:-.02em}.app-footer-cta{max-width:var(--max-width);margin:12px auto 0;font-size:13px;color:var(--text-subtle)}.app-footer-cta a{font-weight:700;color:var(--primary-dark)}@media(max-width:520px){.app-promo-card{flex-direction:column}.app-banner-inner{padding:10px 14px}}.calc-toolbar{display:flex;flex-wrap:wrap;gap:14px 16px;align-items:flex-end;justify-content:space-between}.calc-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.calc-card{display:flex;flex-direction:column;gap:8px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-card);color:inherit;transition:border-color .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease)}.calc-card:hover{text-decoration:none;border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.calc-card strong{font-size:15px;letter-spacing:-.01em;line-height:1.3}.landing{display:flex;flex-direction:column;gap:48px;padding-bottom:16px}.landing-hero{display:grid;gap:28px;align-items:center;grid-template-columns:1.15fr .85fr}.landing-eyebrow{color:var(--primary-dark)}.landing-hero h1{font-size:clamp(28px,4.5vw,40px);letter-spacing:-.035em;line-height:1.12;margin-top:8px}.landing-lede{margin-top:14px;color:var(--text-muted);font-size:17px;line-height:1.55;max-width:52ch}.landing-actions{margin-top:20px}.landing-trust{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:18px;list-style:none;padding:0}.landing-trust li{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--text-muted)}.landing-trust svg{color:var(--primary);flex:none}.landing-hero-panel{min-width:0}.landing-mock-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:22px 20px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.landing-mock-card:before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--header-from),var(--header-to))}.landing-mock-tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-subtle);margin-bottom:12px}.landing-mock-q{font-size:17px;font-weight:600;line-height:1.4;letter-spacing:-.015em}.landing-mock-opts{display:flex;flex-direction:column;gap:8px;margin-top:16px}.landing-mock-opts span{display:block;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface-alt);font-size:14px;font-weight:500}.landing-mock-opts .is-correct{background:var(--success-soft);border-color:var(--success);color:var(--success);font-weight:700}.landing-mock-why{margin-top:14px;font-size:13px;color:var(--text-muted);line-height:1.45;padding-top:12px;border-top:1px solid var(--border)}.landing-section{display:flex;flex-direction:column;gap:18px}.landing-section-head h2{font-size:clamp(22px,3vw,28px);letter-spacing:-.02em;margin-top:4px}.landing-section-head.row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px}.landing-steps,.landing-features,.landing-topics{display:grid;gap:14px}.landing-steps{grid-template-columns:repeat(3,1fr)}.landing-features,.landing-topics{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.landing-step,.landing-feature,.landing-topic{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-card)}.landing-step-n{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--primary-soft);color:var(--primary-dark);font-weight:800;font-size:14px;margin-bottom:10px}.landing-step h3,.landing-feature h3,.landing-topic strong{display:block;margin-bottom:6px;font-size:16px}.landing-feature-icon{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);margin-bottom:12px}.landing-topic{display:flex;flex-direction:column;gap:6px;color:inherit;transition:border-color .15s var(--ease),transform .15s var(--ease)}.landing-topic:hover{text-decoration:none;border-color:var(--primary);transform:translateY(-2px)}.landing-band{border-radius:var(--radius-xl);padding:28px 24px;background:linear-gradient(135deg,var(--header-from),var(--header-to) 55%,var(--header-deep));color:#fff;box-shadow:var(--shadow-md)}.landing-band-inner{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between}.landing-band h2{font-size:clamp(20px,3vw,26px);margin:6px 0 10px;color:#fff}.landing-band p{max-width:56ch;color:#ffffffe6;font-size:15px;line-height:1.55}.landing-eyebrow-on-dark{color:#ffffffc7}.landing-band .btn{background:#fff;color:var(--primary-dark);border-color:transparent}.landing-band .btn.secondary{background:#ffffff24;color:#fff;border-color:#ffffff4d}.landing-faq{display:flex;flex-direction:column;gap:10px}.landing-faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}.landing-faq-item summary{cursor:pointer;font-weight:700;list-style:none}.landing-faq-item summary::-webkit-details-marker{display:none}.landing-faq-item[open] summary{margin-bottom:8px;color:var(--primary-dark)}.landing-final{text-align:center;padding:28px 16px;border-radius:var(--radius-xl);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-card)}.landing-final h2{font-size:clamp(22px,3vw,28px)}.landing-final .lede{margin:10px auto 0}.landing-final .landing-actions{justify-content:center}@media(max-width:860px){.landing-hero,.landing-steps{grid-template-columns:1fr}}@media(max-width:520px){.landing{gap:36px}.landing-hero h1{font-size:26px}.landing-lede{font-size:15px}}.founder-page{display:flex;flex-direction:column;gap:48px;padding-bottom:16px}.founder-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);align-items:center;gap:28px}.founder-hero h1{margin-top:8px;max-width:19ch;font-size:clamp(30px,5vw,48px);line-height:1.06;letter-spacing:-.045em}.founder-eyebrow{color:var(--primary-dark)}.founder-manifesto{position:relative;overflow:hidden;min-height:320px;padding:28px;border-radius:var(--radius-xl);background:radial-gradient(circle at 90% 10%,rgb(255 255 255 / .24),transparent 36%),linear-gradient(145deg,var(--header-from),var(--header-deep));color:#fff;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;justify-content:flex-end}.founder-manifesto-mark{position:absolute;top:20px;right:24px;font-size:76px;line-height:1;font-weight:900;letter-spacing:-.08em;color:#ffffff24}.founder-manifesto .eyebrow{color:#ffffffb8}.founder-manifesto h2{max-width:17ch;margin:6px 0 12px;color:#fff;font-size:clamp(22px,3vw,30px);line-height:1.15;letter-spacing:-.035em}.founder-manifesto p:last-child{max-width:40ch;color:#ffffffd6;font-size:14px}.tiktok-btn{background:#111;border-color:#111;color:#fff;box-shadow:-3px 3px #25f4ee,3px -3px #fe2c55}.tiktok-btn:hover{background:#262626;border-color:#262626;color:#fff}.founder-journey-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.founder-journey-card{padding:20px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card)}.founder-journey-card>span{display:block;margin-bottom:18px;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.08em}.founder-journey-card h3{margin-bottom:6px;font-size:17px}.founder-video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.founder-video-card{min-width:0;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--surface);box-shadow:var(--shadow-card);transition:transform .18s var(--ease),box-shadow .18s var(--ease)}.founder-video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.founder-video-frame{width:100%;aspect-ratio:9 / 14;overflow:hidden;background:#111}.founder-video-frame iframe{display:block;width:100%;height:100%;border:0}.founder-video-copy{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:16px}.founder-video-copy h3{font-size:16px;line-height:1.3}.founder-video-copy .deck-cta{margin-top:2px}.founder-preview{padding:24px;border:1px solid color-mix(in srgb,var(--primary) 22%,var(--border));border-radius:var(--radius-xl);background:linear-gradient(145deg,color-mix(in srgb,var(--primary-soft) 58%,var(--surface)),var(--surface))}@media(max-width:860px){.founder-hero{grid-template-columns:1fr}.founder-manifesto{min-height:260px}.founder-video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.founder-page{gap:36px}.founder-hero h1{font-size:30px}.founder-journey-grid,.founder-video-grid{grid-template-columns:1fr}.founder-video-frame{aspect-ratio:9 / 13}.founder-preview{padding:18px 14px}}.blog-list{display:flex;flex-direction:column;gap:14px}.blog-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:8px}.blog-card h2{font-size:18px;line-height:1.3}.blog-card h2 a{color:var(--text);text-decoration:none}.blog-card h2 a:hover{color:var(--primary-dark);text-decoration:underline}.blog-tags{display:flex;flex-wrap:wrap;gap:6px}.prose-body{display:flex;flex-direction:column;gap:14px;line-height:1.65;color:var(--text)}.prose-body h2{margin-top:8px;font-size:1.25rem}.prose-body h3{margin-top:4px}.prose-body ul,.prose-body ol{padding-left:1.25rem;display:flex;flex-direction:column;gap:6px;list-style:disc}.prose-body ol{list-style:decimal}.prose-body li,.prose-body p{color:var(--text-muted)}.blog-cta{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin-top:8px;padding:16px;border-radius:var(--radius);background:var(--primary-soft);border:1px solid color-mix(in srgb,var(--primary) 30%,var(--border))}.blog-cta p{color:var(--text)!important;font-weight:600}.plain-list{list-style:disc;padding-left:1.25rem;display:flex;flex-direction:column;gap:6px;color:var(--text-muted)}.site-footer{margin-top:auto;border-top:1px solid var(--border);background:var(--surface);padding:28px 20px 24px}.site-footer-inner{max-width:var(--max-width);margin:0 auto;display:flex;flex-wrap:wrap;gap:20px 32px;justify-content:space-between;align-items:flex-start}.site-footer strong{display:block;margin-bottom:6px;font-size:15px}.site-footer .caption{max-width:42ch}.footer-nav{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center}.footer-nav a{font-size:14px;font-weight:600;color:var(--text-muted);text-decoration:none}.footer-nav a:hover{color:var(--primary-dark);text-decoration:underline}.footer-note{max-width:var(--max-width);margin:16px auto 0;padding-top:12px;border-top:1px solid var(--border)}@media(max-width:720px){.topbar .nav{display:none}.bottom-nav{display:flex}.main{padding:20px 16px 28px}.site-footer{padding-bottom:calc(20px + var(--bottom-nav-h) + env(safe-area-inset-bottom,0px))}.summary-strip{grid-template-columns:repeat(2,1fr)}.brand-tag{display:none}.cat-tabs-wrap{top:calc(var(--nav-h) - 2px)}}@media(max-width:520px){h1{font-size:22px}.main{padding-left:14px;padding-right:14px}.hero{padding:18px 16px;border-radius:var(--radius-lg)}.deck-list{grid-template-columns:1fr}.flashcard{padding:20px 16px;border-radius:var(--radius-lg)}.focus-toolbar{align-items:stretch;padding:10px}.focus-toolbar-copy small{display:none}.focus-toggle{min-height:40px}.prompt{font-size:17px}.grades{grid-template-columns:repeat(2,1fr)}.calendar-head{align-items:stretch}.calendar-nav{grid-template-columns:36px 1fr 36px}.calendar-weekday{padding:7px 1px;font-size:9px}.calendar-day{min-height:54px;padding:5px}.calendar-due span{display:none}.calendar-due strong{font-size:13px}.grade-btn{min-height:64px}.topbar-inner{padding:10px 14px}}@media(min-width:640px){.deck-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:900px){.deck-list{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(pointer:coarse){.cat-tab{min-height:44px}.option{min-height:56px}}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.switch{position:relative;flex:none;width:50px;height:30px;display:inline-block}.switch input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}.switch input:disabled{cursor:not-allowed}.switch>span{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:999px;background:var(--border-strong);transition:background .15s ease;pointer-events:none}.switch>span:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #00000040;transition:transform .15s ease}.switch input:checked+span{background:var(--primary)}.switch input:checked+span:after{transform:translate(20px)}.switch input:disabled+span{opacity:.5}.switch input:focus-visible+span{outline:2px solid var(--primary);outline-offset:2px}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip-btn{min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-muted);font-size:14px;font-weight:600}.chip-btn:hover:not(:disabled){border-color:var(--border-strong)}.chip-btn.active{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark)}.chip-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-card{display:flex;flex-direction:column;gap:14px}.quiz-head h2{margin-bottom:2px}.quick-quiz-scope{display:grid;gap:8px;padding:12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-alt)}.quick-quiz-label{font-size:12px;font-weight:700;color:var(--text-muted)}.chip-btn.compact{min-height:32px;padding:0 12px;font-size:12px;background:var(--surface)}.chip-btn.compact.active{background:var(--primary-soft)}.quiz-scope-summary{color:var(--primary-dark);font-size:12px;font-weight:700}.quiz-options{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(96px,1fr))}.quiz-option{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;min-height:60px;padding:8px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-alt);color:var(--text);text-align:center;transition:border-color .12s ease,transform .12s ease}.quiz-option:hover{text-decoration:none;border-color:var(--primary);transform:translateY(-1px)}.quiz-option strong{font-size:15px;font-weight:700}.quiz-option span{font-size:12px;color:var(--text-subtle)}.exam-clock{display:inline-flex;align-items:center;justify-content:center;min-width:68px;min-height:40px;padding:0 12px;border-radius:999px;border:1px solid var(--border-strong);background:var(--surface-alt);color:var(--text);font-size:16px;font-weight:700;font-variant-numeric:tabular-nums}.exam-clock.urgent{background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-subtle);margin-bottom:-6px}.crumbs a{color:var(--text-muted);font-weight:600}.calc-card-tags{display:flex;flex-wrap:wrap;gap:6px}.calc-card.hosted{border-color:color-mix(in srgb,var(--primary) 35%,var(--border));background:linear-gradient(180deg,var(--primary-soft) 0%,var(--surface) 62%)}.chip.on-site{background:var(--primary-soft);border-color:color-mix(in srgb,var(--primary) 45%,var(--border));color:var(--primary-dark)}.tool-fields{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));align-items:start}.tool-field-wide{grid-column:1 / -1}.tool-choice-label{font-size:13px;font-weight:600;color:var(--text-muted)}.tool-unit{color:var(--text-subtle);font-weight:500}.field select,.bar-cell select,.bar-cell input{min-height:48px;padding:0 12px;border-radius:12px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font:inherit;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}.field select:focus,.bar-cell select:focus,.bar-cell input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.tool-results{border-color:color-mix(in srgb,var(--primary) 30%,var(--border))}.tool-highlights{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.tool-highlight{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border-radius:var(--radius-lg);background:var(--surface-alt);border:1px solid var(--border)}.tool-highlight strong{font-size:26px;font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;color:var(--primary-dark)}.tool-highlight-unit{font-size:14px;font-weight:600;color:var(--text-muted);letter-spacing:0}.tool-table-wrap{overflow-x:auto}.tool-table{width:100%;border-collapse:collapse;font-size:14px}.tool-table th,.tool-table td{padding:9px 0;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}.tool-table tr:last-child th,.tool-table tr:last-child td{border-bottom:0}.tool-table th{font-weight:600;color:var(--text-muted)}.tool-table td{text-align:right;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;padding-left:16px}.tool-row-note{display:block;font-weight:400}.tool-table-ref thead th{padding:0 0 9px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-subtle);border-bottom:1px solid var(--border-strong)}.tool-table-ref thead th:not(:first-child){text-align:right;padding-left:16px}.tool-table-ref tbody th{color:var(--text);white-space:nowrap}.tool-table-ref td{font-weight:600}.tool-table td.tool-cell-text{text-align:left;font-weight:400;white-space:normal;color:var(--text-muted)}.land-chain-summary{margin-top:4px}.land-chain-summary strong{color:var(--primary-dark);font-variant-numeric:tabular-nums}.tool-copy{min-height:38px;padding:0 14px;font-size:13px}.tool-footnote,.tool-assumptions{max-width:70ch}.tool-assumption-list{display:flex;flex-direction:column;gap:8px;padding-left:18px;font-size:13px;color:var(--text-muted)}.loan-tabs{display:grid;gap:8px;grid-template-columns:repeat(3,minmax(0,1fr))}.loan-tab{display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-height:64px;padding:12px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);text-align:left}.loan-tab strong{font-size:14px}.loan-tab.active{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-dark)}.loan-split{display:flex;height:10px;overflow:hidden;border-radius:999px;background:var(--surface-alt)}.loan-split-principal{background:var(--primary)}.loan-split-interest{background:color-mix(in srgb,#c9a227 75%,var(--border))}.loan-split-legend{display:flex;justify-content:space-between;margin-top:-4px}.loan-years{display:flex;flex-direction:column;gap:10px}.loan-year{overflow:hidden;border:1px solid var(--border);border-radius:var(--radius)}.loan-year-head{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:12px 14px;background:var(--surface-alt);color:var(--text);text-align:left}.loan-chevron{display:inline-block;margin-left:8px;transition:transform .15s var(--ease)}.loan-chevron.open{transform:rotate(180deg)}.loan-prepay-edit,.loan-prepay-set{display:inline-flex;flex-wrap:wrap;gap:6px;align-items:center;justify-content:flex-end}.loan-prepay-edit input{width:110px;min-height:32px;padding:0 8px;border:1px solid var(--border-strong);border-radius:8px;background:var(--surface);color:var(--text);font:inherit}.loan-choice-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.loan-choice{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);text-align:left}.loan-choice.active{border-color:var(--primary);background:var(--primary-soft)}.loan-edu-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.loan-edu-card{padding:14px 16px;border-radius:var(--radius);background:var(--surface-alt);border:1px solid var(--border)}.loan-edu-card h3{margin:0 0 6px;font-size:15px}@media(max-width:720px){.loan-tabs{grid-template-columns:1fr}}.bar-rows{display:flex;flex-direction:column;gap:10px}.bar-row{display:grid;gap:8px;grid-template-columns:minmax(0,2fr) 88px 88px 96px minmax(70px,auto) 40px;align-items:center}.bar-row-head{padding:0 2px}.bar-cell{display:block;min-width:0}.bar-cell input,.bar-cell select{width:100%}.bar-weight{font-weight:700;font-variant-numeric:tabular-nums;text-align:right;font-size:14px}.bar-remove{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text-subtle);font-size:20px;line-height:1}.bar-remove:hover:not(:disabled){border-color:var(--danger);color:var(--danger)}.bar-remove:disabled{opacity:.4;cursor:not-allowed}@media(max-width:620px){.bar-row-head{display:none}.bar-row{grid-template-columns:1fr 1fr;gap:8px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface-alt)}.bar-row .bar-cell:first-child{grid-column:1 / -1}.bar-weight{text-align:left;align-self:center}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.resource-home,.resource-lock,.sheet{min-width:0;max-width:100%}.resource-hero,.resource-lock-hero,.sheet-hero{position:relative;border-radius:var(--radius-xl);padding:26px 24px 22px;overflow-wrap:break-word;color:#fff;background:radial-gradient(120% 80% at 100% 0%,rgb(255 255 255 / .22),transparent 46%),linear-gradient(135deg,var(--header-from),var(--header-to) 55%,var(--header-deep));box-shadow:var(--shadow-md)}.resource-hero .lede,.resource-lock-hero .lede,.sheet-hero .lede,.sheet-hook{color:#ffffffeb;max-width:62ch}.resource-hero h1,.resource-lock-hero h1,.sheet-hero h1,.resource-hero p,.resource-lock-hero p,.sheet-hero p,.sheet-story p{overflow-wrap:anywhere;max-width:100%}.resource-hero .eyebrow,.resource-lock-hero .eyebrow,.sheet-hero .eyebrow{color:#ffffffd1}.resource-hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.resource-hero-stats div{min-width:88px;padding:10px 14px;border-radius:14px;background:#ffffff24;border:1px solid rgb(255 255 255 / .18)}.resource-hero-stats strong{display:block;font-size:22px;letter-spacing:-.03em}.resource-hero-stats span{font-size:12px;font-weight:600;opacity:.86}.resource-lock-badge{display:inline-flex;align-items:center;gap:6px;margin-bottom:10px;padding:6px 10px;border-radius:999px;background:#ffffff29;font-size:12px;font-weight:700}.resource-lock-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.resource-toolbar{display:flex;flex-direction:column;gap:12px}.resource-search input{width:100%;min-height:46px;border-radius:14px;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:0 14px;font:inherit}.resource-search input:focus{outline:2px solid var(--primary);outline-offset:1px}.resource-wing{display:flex;flex-direction:column;gap:12px;padding:18px;border-radius:var(--radius-xl);background:linear-gradient(180deg,var(--soft),transparent 88%),var(--surface);border:1px solid color-mix(in srgb,var(--accent) 22%,var(--border));box-shadow:var(--shadow-card)}.resource-wing-head{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;justify-content:space-between}.resource-wing-title{display:flex;gap:12px;align-items:flex-start}.resource-wing-story{color:var(--text-muted);max-width:68ch;font-size:15px;line-height:1.6}.resource-sheet-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}.resource-sheet-card{display:flex;flex-direction:column;gap:8px;padding:16px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);color:inherit;box-shadow:var(--shadow);transition:transform .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease)}.resource-sheet-card:hover{text-decoration:none;transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 45%,var(--border));box-shadow:var(--shadow-md)}.resource-sheet-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.resource-sheet-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:var(--accent);background:var(--soft)}.resource-sheet-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px;color:var(--text-subtle);font-size:12px;font-weight:600}.resource-account-card{background:linear-gradient(135deg,var(--primary-soft),var(--surface) 62%),var(--surface);border-color:color-mix(in srgb,var(--primary) 28%,var(--border))}.sheet{display:flex;flex-direction:column;gap:22px}.sheet-crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;font-weight:600;color:var(--text-subtle)}.sheet-hero-icon{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:4px;vertical-align:-3px}.sheet-hook{margin-top:10px;font-size:17px;line-height:1.5}.sheet-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px;font-size:13px;font-weight:700;color:#ffffffdb}.sheet-meta .dot{background:#ffffffb3}.sheet-actions{margin-top:18px}.sheet-hero .btn.secondary{background:#ffffff24;color:#fff;border-color:#ffffff47}.sheet-story{display:grid;gap:14px}.sheet-story p,.sheet-chapter-story{font-size:16px;line-height:1.7;color:var(--text-muted);max-width:70ch}.sheet-formulas h2,.sheet-pitfalls h2,.sheet-group h2,.sheet-chapter-head h2{margin-bottom:10px}.sheet-formula-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(min(100%,148px),1fr))}.sheet-formula{display:flex;flex-direction:column;gap:6px;padding:14px;border-radius:16px;background:var(--soft);border:1px solid color-mix(in srgb,var(--accent) 28%,var(--border));color:var(--text)}.sheet-formula strong{font-size:20px;letter-spacing:-.03em;color:var(--accent)}.sheet-formula span{font-size:12px;font-weight:600;color:var(--text-muted);line-height:1.35}.sheet-pitfalls{padding:16px 18px;border-radius:var(--radius-lg);background:var(--warning-soft);border:1px solid color-mix(in srgb,var(--warning) 28%,var(--border))}.sheet-pitfalls ul{display:flex;flex-direction:column;gap:8px;padding-left:1.15rem;list-style:disc;color:var(--text-muted)}.sheet-facts{display:grid;gap:12px}.sheet-fact{display:grid;grid-template-columns:auto 1fr;gap:12px;padding:16px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-left:4px solid var(--accent)}.sheet-fact-index{font-size:12px;font-weight:800;letter-spacing:.06em;color:var(--accent);padding-top:3px}.sheet-fact-answer{font-size:18px;font-weight:800;letter-spacing:-.03em;color:var(--text);line-height:1.3}.sheet-fact-body h3{margin-top:4px;color:var(--text-muted);font-size:14px;font-weight:650}.sheet-fact-why{margin-top:8px;color:var(--text-muted);font-size:14.5px;line-height:1.6}.sheet-fact-q{margin-top:10px;font-size:13px;color:var(--text-subtle)}.sheet-fact-q summary{cursor:pointer;font-weight:700}.sheet-fact-q p{margin-top:6px}.sheet-chapter{display:flex;flex-direction:column;gap:12px;padding-top:8px}.sheet-chapter.is-nested{padding:18px;border-radius:var(--radius-xl);background:color-mix(in srgb,var(--soft) 70%,var(--surface));border:1px solid color-mix(in srgb,var(--accent) 18%,var(--border))}.sheet-chapter-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.sheet-chapter .sheet-hook{color:var(--text);font-size:16px;margin-top:0}.sheet-end{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;padding:20px;border-radius:var(--radius-xl);background:linear-gradient(135deg,var(--soft),var(--surface));border:1px solid color-mix(in srgb,var(--accent) 24%,var(--border))}@media(max-width:720px){.resource-hero,.resource-lock-hero,.sheet-hero{padding:20px 16px 18px}.resource-wing{padding:14px}.sheet-fact{grid-template-columns:1fr;gap:6px}.sheet-fact-index{padding-top:0}}@media(min-width:760px){.sheet-facts{grid-template-columns:repeat(2,minmax(0,1fr))}}@media print{.topbar,.bottom-nav,.site-footer,.app-banner,.no-print,.theme-toggle-wrap{display:none!important}.main{max-width:none;padding:0}.app{background:#fff}.sheet,.sheet-fact,.sheet-formula,.sheet-pitfalls,.sheet-chapter.is-nested{break-inside:avoid;box-shadow:none}.sheet-hero,.resource-hero,.resource-lock-hero{box-shadow:none;-webkit-print-color-adjust:exact;print-color-adjust:exact}.sheet-fact-q{display:none}}