:root{color-scheme:light;--bg-deep: oklch(99% .003 180);--bg-primary: oklch(100% 0 0);--bg-secondary: oklch(97% .004 200);--bg-tertiary: oklch(95.5% .006 200);--bg-overlay: oklch(21% .02 250 / .45);--surface-panel: var(--bg-primary);--surface-panel-strong: var(--bg-primary);--surface-panel-muted: var(--bg-secondary);--surface-line: oklch(90% .008 220);--surface-line-strong: oklch(80% .012 220);--text-primary: oklch(21% .02 250);--text-secondary: oklch(45% .02 250);--text-tertiary: oklch(48% .02 250);--text-muted: oklch(49% .02 250);--primary-400: oklch(46% .1 175);--primary-500: oklch(50% .11 175);--primary-600: oklch(43% .1 175);--primary-soft: oklch(55% .11 175 / .08);--primary-medium: oklch(55% .11 175 / .25);--accent-300: oklch(49% .12 75);--accent-400: oklch(50% .12 75);--accent-500: oklch(45% .12 75);--accent-soft: oklch(60% .13 75 / .1);--accent-medium: oklch(60% .13 75 / .25);--signal-correct: oklch(46% .11 168);--signal-wrong: oklch(50% .18 25);--signal-warning: oklch(49% .12 75);--signal-info: oklch(46% .12 250);--correct-soft: oklch(55% .12 168 / .1);--wrong-soft: oklch(56% .19 25 / .09);--warning-soft: oklch(60% .13 75 / .1);--info-soft: oklch(55% .12 250 / .08);--highlight: oklch(46% .13 138);--button-primary: var(--text-primary);--button-ink: var(--bg-primary);--font-display: "Cabinet Grotesk", system-ui, sans-serif;--ground: oklch(99% .003 180);--surface: oklch(100% 0 0);--surface-2: oklch(95.5% .006 200);--ink: oklch(21% .02 250);--mut: oklch(48% .02 250);--line: oklch(91% .008 220);--sig: oklch(55% .11 175);--sig-ink: oklch(99% .01 175);--focus: oklch(55% .11 175);--ok: oklch(55% .12 168);--bad: oklch(56% .19 25);--midc: oklch(60% .13 75);--wrong: var(--bad);--ok-soft: oklch(55% .12 168 / .09);--bad-soft: oklch(56% .19 25 / .08);--mid-soft: oklch(60% .13 75 / .1);--sig-soft: oklch(55% .11 175 / .08);--pick-bg: oklch(55% .11 175 / .07);--bar: oklch(62% .13 172);--primary: oklch(21% .02 250);--primary-ink: oklch(99% .003 180);--tint: 24%;--logo-ink: oklch(47% .01 250);--shadow: 0 1px 2px rgba(16, 26, 69, .06), 0 8px 20px rgba(16, 26, 69, .08);--s-perfect: oklch(50% .12 172);--s-t90: oklch(56% .15 138);--s-okk: oklch(55% .12 168);--s-mid: oklch(60% .13 75);--s-low: oklch(56% .19 25);--font-heading: "Cabinet Grotesk", system-ui, sans-serif;--font-body: "Switzer", system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, monospace;--space-xs: 4px;--space-sm: 8px;--space-md: 12px;--space-lg: 16px;--space-xl: 20px;--space-2xl: 24px;--space-3xl: 32px;--space-4xl: 48px;--pad-page-x: clamp(12px, 4vw, 20px);--pad-card: clamp(14px, 4vw, 24px);--pad-panel: clamp(12px, 3.5vw, 20px);--radius-sm: 10px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-2xl: 24px;--radius-pill: 999px;--shadow-card: none;--shadow-elevated: 0 12px 36px oklch(20% .02 250 / .08);--shadow-glow: none;--gradient-panel: var(--bg-primary);--gradient-panel-strong: var(--bg-primary);--gradient-practice: var(--primary-600);--gradient-mock: var(--accent-500);--gradient-success: var(--primary-600);--gradient-danger: var(--signal-wrong);--ease-out: cubic-bezier(.16, 1, .3, 1);--duration-fast: .15s;--duration-normal: .25s}:root[data-theme=dark]{color-scheme:dark;--bg-deep: oklch(17% .02 255);--bg-primary: oklch(21% .022 255);--bg-secondary: oklch(23% .022 255);--bg-tertiary: oklch(26% .025 255);--bg-overlay: oklch(10% .02 255 / .7);--surface-line: oklch(33% .025 255);--surface-line-strong: oklch(48% .025 255);--text-primary: oklch(94% .008 250);--text-secondary: oklch(75% .02 250);--text-tertiary: oklch(70% .02 250);--text-muted: oklch(68% .02 250);--primary-400: oklch(77% .13 175);--primary-500: oklch(60% .11 175);--primary-600: oklch(43% .1 175);--primary-soft: oklch(74% .13 175 / .1);--primary-medium: oklch(74% .13 175 / .3);--accent-300: oklch(81% .13 80);--accent-400: oklch(75% .13 80);--signal-correct: oklch(79% .14 165);--signal-wrong: oklch(75% .15 25);--signal-warning: oklch(81% .13 80);--signal-info: oklch(77% .1 250);--highlight: oklch(86% .17 138);--correct-soft: oklch(79% .14 165 / .1);--wrong-soft: oklch(70% .17 25 / .11);--ground: oklch(17% .02 255);--surface: oklch(21% .022 255);--surface-2: oklch(26% .025 255);--ink: oklch(94% .008 250);--mut: oklch(70% .02 250);--line: oklch(31% .025 255);--sig: oklch(74% .13 175);--sig-ink: oklch(18% .03 200);--focus: oklch(74% .13 175);--ok: oklch(79% .14 165);--bad: oklch(70% .17 25);--midc: oklch(81% .13 80);--ok-soft: oklch(79% .14 165 / .1);--bad-soft: oklch(70% .17 25 / .11);--mid-soft: oklch(81% .13 80 / .1);--sig-soft: oklch(74% .13 175 / .1);--pick-bg: oklch(74% .13 175 / .1);--bar: oklch(76% .14 170);--primary: oklch(94% .008 250);--primary-ink: oklch(17% .02 255);--tint: 20%;--logo-ink: oklch(86% .01 250);--shadow: 0 1px 2px rgba(0, 0, 0, .45), 0 8px 22px rgba(0, 0, 0, .35);--s-perfect: oklch(52% .11 172);--s-t90: oklch(88% .19 136);--s-okk: oklch(79% .14 165);--s-mid: oklch(81% .13 80);--s-low: oklch(70% .17 25)}.app-shell{min-height:100vh}.app-rail{position:fixed;inset:0 auto 0 0;width:232px;border-right:1px solid var(--surface-line);background:var(--bg-primary);padding:28px 18px 20px;display:flex;flex-direction:column;z-index:20}.app-wordmark{font-family:var(--font-heading);font-size:24px;font-weight:800;text-decoration:none;padding:0 10px}.cert-switch{display:grid;grid-template-columns:1fr auto;align-items:center;gap:7px;padding:16px 10px;margin:16px 0 20px;text-align:left;background:transparent;border:1px solid var(--surface-line);border-radius:12px;color:var(--text-primary);font-size:12px}.cert-switch img{grid-column:1/-1;height:15px;max-width:100%;object-fit:contain;object-position:left}:root[data-theme=dark] .cert-switch img{background:#fff;border-radius:3px;padding:3px;height:21px}.app-rail nav{display:grid;gap:5px}.app-rail nav button,.command-results button{display:flex;gap:11px;align-items:center;padding:11px 13px;border:0;border-radius:999px;text-align:left;background:transparent;color:var(--text-secondary);font-size:13px}.app-rail nav button:hover,.command-results button:hover{background:var(--bg-tertiary);color:var(--text-primary)}.app-rail nav button[aria-current=page]{color:var(--primary-400);background:var(--primary-soft);font-weight:600}.rail-bottom{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px;padding-top:24px;align-items:center}.jump-button{border:1px solid var(--surface-line);border-radius:999px;background:transparent;color:var(--text-secondary);display:inline-flex;align-items:center;gap:8px;padding:9px 12px;font-size:12px}.icon-button{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;border:1.5px solid var(--surface-line);border-radius:50%;background:transparent;color:var(--text-primary)}.icon-button:hover{background:var(--bg-tertiary)}.app-body{margin-left:232px}.app-content{width:100%;max-width:1170px;margin:auto;padding:48px clamp(24px,4vw,60px) 40px}.app-content:focus{outline:0}.page-heading{margin-bottom:28px}.page-heading h1{margin:0 0 12px}.cert-meta{display:flex;flex-wrap:wrap;gap:7px;color:var(--text-secondary);font-size:11px}.chip{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:4px 9px;background:var(--bg-tertiary)}.chip.updated{background:var(--correct-soft);color:var(--signal-correct)}.mobile-header,.mobile-tabs{display:none}.skip-link{position:fixed;top:-60px;left:20px;z-index:1000;padding:12px;background:var(--bg-primary);border:2px solid var(--primary-400)}.skip-link:focus{top:12px}.command-dialog{width:min(540px,calc(100% - 32px));margin:15vh auto auto;border:1px solid var(--surface-line);border-radius:20px;padding:12px;color:var(--text-primary);background:var(--bg-primary);box-shadow:var(--shadow-elevated)}.command-dialog::backdrop{background:var(--bg-overlay)}.command-head{display:flex;gap:10px;align-items:center}.command-head input{width:100%;min-width:0;border:0;background:transparent;padding:10px;color:inherit}.command-results{display:grid;gap:4px;padding-top:10px}.o2-card{padding:24px;border:1px solid var(--surface-line);border-radius:20px;background:var(--bg-primary)}.o2-card h2,.o2-card h3{margin:0}.card-header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}.o2-primary,.o2-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:999px;border:1.5px solid var(--surface-line);font-size:13px;font-weight:600;white-space:normal}.o2-primary{background:var(--button-primary);color:var(--button-ink);border-color:var(--button-primary)}.o2-secondary{background:transparent;color:var(--text-primary)}.text-button{border:0;background:transparent;color:var(--text-secondary);padding:0;font-size:12px;text-align:left}.text-button:hover{color:var(--primary-400);text-decoration:underline}.muted{color:var(--text-secondary)}.small{font-size:12px}.home-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:22px;align-items:start}.home-column{display:grid;gap:22px;min-width:0}.readiness{margin:0 0 28px;max-width:360px}.readiness-label{font-size:12px;color:var(--text-secondary)}.readiness-value{font-size:48px;font-weight:700;line-height:1.15;font-family:var(--font-heading);letter-spacing:-.03em}.meter{height:6px;position:relative;background:var(--bg-tertiary);border-radius:999px;overflow:hidden}.meter i{display:block;height:100%;border-radius:inherit;background:var(--signal-correct)}.meter .pass-marker{position:absolute;top:0;bottom:0;width:2px;background:var(--text-tertiary)}.home-actions{display:grid;border:1px solid var(--surface-line);border-radius:18px;overflow:hidden}.home-actions button{background:var(--bg-primary);color:var(--text-primary);border:0;border-bottom:1px solid var(--surface-line);display:flex;align-items:center;gap:14px;text-align:left;padding:17px 20px;width:100%}.home-actions button:last-child{border-bottom:0}.home-actions button:hover{background:var(--bg-secondary)}.home-actions button>span{flex:1;min-width:0}.home-actions strong,.home-actions small{display:block}.home-actions strong{font-size:14px;font-weight:600}.home-actions small{color:var(--text-secondary);font-size:11px;margin-top:3px}.home-actions svg{color:var(--text-secondary)}.block-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:8px}.block-tile{--score: var(--surface-line);min-height:76px;position:relative;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start;padding:9px;border:1px solid var(--surface-line);border-radius:12px;background:var(--bg-primary);color:var(--text-secondary);font-family:var(--font-mono);text-align:left}.block-tile[data-scored=true]{background:color-mix(in oklch,var(--score) 20%,var(--bg-primary));color:color-mix(in oklch,var(--score) 55%,var(--text-primary));border-color:transparent}.block-tile[data-perfect=true]{background:var(--s-perfect);color:var(--bg-primary)}.block-tile[data-active=true]{border:1.5px solid var(--text-primary);box-shadow:0 0 0 3px var(--surface-line)}.block-tile[aria-pressed=true]{outline:2px solid var(--text-primary);outline-offset:2px}.block-tile b{font-family:var(--font-body);font-size:16px;font-weight:600}.block-tile .tile-number{font-size:10px}.round-dots{display:flex;gap:3px;min-height:4px}.round-dots i{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.7}.block-detail{margin-top:20px;padding:20px;border-radius:14px;background:var(--bg-tertiary)}.block-detail h3{margin:0 0 6px}.stat-row{display:flex;gap:24px;flex-wrap:wrap;margin:16px 0}.stat-row dt{color:var(--text-secondary);font-size:11px}.stat-row dd{margin:3px 0 0;font-size:20px;font-weight:600;font-family:var(--font-heading)}.question-dots{display:flex;flex-wrap:wrap;gap:5px;margin:18px 0}.question-dots i{width:7px;height:7px;background:var(--surface-line);border-radius:50%}.question-dots .correct{background:var(--s-okk)}.question-dots .wrong{background:var(--s-low)}.question-dots .current{background:var(--text-primary)}.domain-list{display:grid;gap:18px}.domain-row{display:grid;grid-template-columns:minmax(90px,1.2fr) minmax(30px,1fr) 42px;align-items:center;gap:14px;font-size:12px}.domain-row small{display:block;color:var(--text-secondary);font-size:10px}.domain-row strong{text-align:right;font-size:13px}.home-links{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:24px}.rewards-summary{display:flex;gap:16px;flex-wrap:wrap;align-items:center;font-size:12px;padding:16px 0}.app-footer{margin:36px 0 0;padding:20px 0 0;border-top:1px solid var(--surface-line);color:var(--text-secondary);font-size:11px;line-height:1.7}.app-footer p{max-width:75ch;margin:0 0 10px}.footer-links{display:flex;flex-wrap:wrap;gap:16px}.segmented{display:inline-flex;flex-wrap:wrap;gap:4px;background:var(--bg-tertiary);padding:4px;border-radius:999px}.segmented button{background:transparent;border:0;padding:7px 12px;border-radius:999px;color:var(--text-secondary);font-size:12px}.segmented button[aria-pressed=true]{background:var(--button-primary);color:var(--button-ink)}.round-list{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}.round-item{border:1px solid var(--surface-line);border-radius:10px;padding:9px;font-size:11px}.practice-config{display:grid;gap:24px}.practice-config legend{font-family:var(--font-heading);font-size:18px;font-weight:700;margin-bottom:14px}.source-options{display:flex;flex-wrap:wrap;gap:8px}.source-choice{display:flex;flex-direction:column;align-items:flex-start;gap:3px;padding:11px 16px;border:1.5px solid var(--surface-line);border-radius:14px;background:transparent;color:var(--text-primary);font-size:13px}.source-choice small{color:var(--text-secondary);font-size:11px}.topic-group{padding:16px 0;border-bottom:1px solid var(--surface-line)}.topic-domain{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-weight:500;font-size:13px}.topic-domain input{width:17px;height:17px;accent-color:var(--primary-400)}.topic-chips{display:flex;gap:7px;flex-wrap:wrap}.topic-chips button{border:1px solid var(--surface-line);border-radius:999px;padding:7px 11px;color:var(--text-secondary);background:transparent;font-size:12px}.topic-chips button[aria-pressed=true]{border-color:var(--primary-medium);color:var(--primary-400);background:var(--primary-soft)}.config-number{padding:10px 12px;border:1px solid var(--surface-line);border-radius:10px;max-width:100px;background:var(--bg-primary);color:var(--text-primary)}.state-card{max-width:560px;margin:10vh auto;padding:24px;border:1px solid var(--surface-line);border-radius:20px;background:var(--bg-primary)}.mock-chart{width:100%;height:92px;display:block;color:var(--text-primary)}@media (max-width: 1050px){.app-rail{width:205px;padding-inline:12px}.app-body{margin-left:205px}.app-content{padding-inline:26px}.home-grid{gap:18px}.o2-card{padding:20px}}@media (max-width: 760px){.app-rail{display:none}.app-body{margin:0}.app-content{padding:24px 16px 100px}.mobile-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px 0}.mobile-tools{display:flex;gap:8px;align-items:center}.mobile-cert{display:flex;align-items:center;gap:7px;background:transparent;border:0;color:var(--text-primary);font-size:13px;font-weight:600;padding:0}.mobile-cert i{width:7px;height:7px;background:var(--primary-400);border-radius:50%}.mobile-tabs{position:fixed;z-index:30;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--surface-line);background:var(--bg-primary);padding:9px 8px calc(9px + env(safe-area-inset-bottom))}.mobile-tabs button{display:flex;flex-direction:column;align-items:center;gap:3px;padding:4px 0;font-size:10px;border:0;background:transparent;color:var(--text-secondary)}.mobile-tabs button[aria-current=page]{color:var(--primary-400)}.home-grid{grid-template-columns:1fr}.page-heading h1{font-size:25px}.page-heading{margin-bottom:24px}.readiness-value{font-size:42px}.domain-row{gap:10px}.home-actions button{padding:16px}.command-dialog{margin-top:8vh}}.tile-number{display:flex;align-items:center;justify-content:space-between;gap:5px;width:100%}.app-shell .sub{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}.app-shell .btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;white-space:nowrap;padding:.8rem 1.5rem;cursor:pointer;border-radius:999px;border:1px solid var(--line);color:var(--ink);background:var(--surface)}.app-shell .btn-primary{background:var(--sig);border-color:var(--sig);color:var(--sig-ink)}.app-shell .btn-primary:hover{opacity:.88}.app-shell .btn-ghost:hover{border-color:var(--mut)}.app-shell .btn:disabled{opacity:.4;cursor:not-allowed}.app-shell{min-height:100dvh}.app-shell .rail{border-right:1px solid var(--line);background:var(--surface);padding:1.25rem .9rem;display:flex;flex-direction:column;gap:.15rem;position:fixed;top:0;bottom:0;left:0;width:13.5rem;z-index:150}.app-shell .rail .brand{font-weight:600;letter-spacing:-.02em;padding:.4rem .7rem 1.1rem;display:flex;align-items:center;gap:.5rem}.app-shell .rail .brand i{width:.5rem;height:.5rem;border-radius:50%;background:var(--sig)}.app-shell .rail a{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;color:var(--mut);padding:.6rem .7rem;border-radius:10px;white-space:nowrap;display:flex;align-items:center;gap:.6rem}.app-shell .rail a svg{flex:none}.app-shell .rail a:hover{color:var(--ink);background:var(--surface-2)}.app-shell .rail a[aria-current=page]{color:var(--sig);background:var(--surface-2)}.app-shell .rail .sp{flex:1}.app-shell .cert-switch{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);color:var(--ink);padding:.55rem .7rem;cursor:pointer;text-align:left;margin:.4rem .2rem .8rem;display:flex;align-items:center;justify-content:space-between;gap:.45rem;white-space:nowrap}.app-shell .cert-switch svg{flex:none}.app-shell .appcol{display:flex;flex-direction:column;min-width:0;margin-left:13.5rem}.app-shell .appbar{display:flex;align-items:center;gap:.75rem;border-bottom:1px solid var(--line);background:var(--ground);padding:.7rem clamp(1rem,3vw,2rem);position:sticky;top:0;z-index:200}.app-shell .cmdk{margin-left:auto;display:inline-flex;align-items:center;gap:.7rem;font-family:var(--font-mono);font-size:.75rem;color:var(--mut);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.5rem .9rem;cursor:pointer;white-space:nowrap}.app-shell .cmdk kbd{font-family:inherit;border:1px solid var(--line);border-radius:6px;padding:.1rem .4rem;font-size:.75rem}.app-shell 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