:root{--bg: #fffef7;--paper: #ffffff;--ink: #0a0a0a;--ink-soft: #2a2a2a;--text-muted: #4a4a4a;--grid-dot: #0a0a0a14;--yellow: #fcd34d;--blue: #60a5fa;--red: #f87171;--mint: #6ee7b7;--pink: #f9a8d4;--lilac: #c4b5fd;--slate: #cbd5e1;--brand: var(--yellow);--cta: var(--blue);--danger: var(--red);--success: var(--mint);--accent-pink: var(--pink);--accent-lilac: var(--lilac);--tile-memorised-bg: #ecfdf5;--tile-drilling-bg: #eff6ff;--tile-learning-bg: #fffbeb;--tile-notstart-bg: #f8fafc;--status-memorised: var(--mint);--status-drilling: var(--blue);--status-learning: var(--yellow);--status-not-started:var(--slate);--difficulty-beginner: var(--mint);--difficulty-intermediate: var(--yellow);--difficulty-advanced: var(--pink);--cube-frame-bg: #e4e4e7;--cube-frame-accent: var(--red);--table-zebra: #fafafa;--footer-fine-text: #cbcbcb;--border-w-xs: 2px;--border-w: 3px;--border-w-fat: 4px;--shadow-ink: var(--ink);--shadow: 4px 4px 0 var(--shadow-ink);--shadow-lg: 6px 6px 0 var(--shadow-ink);--shadow-xl: 8px 8px 0 var(--shadow-ink);--shadow-sm: 3px 3px 0 var(--shadow-ink);--shadow-xs: 2px 2px 0 var(--shadow-ink);--r-0: 0px;--r-lg: 14px;--font-display: "Archivo Black", "Space Grotesk", system-ui, sans-serif;--font-ui: "Space Grotesk", system-ui, sans-serif;--font-body: "Inter", system-ui, -apple-system, sans-serif;--font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;--chart-paper: var(--paper);--chart-grid: #0a0a0a18;--chart-axis: var(--ink);--chart-ao100: #0046ad;--chart-area-op: .22;--goal-bar-fill: var(--brand);--milestone-card-bg: var(--paper)}:root[data-theme=classic]{--bg: #fffef7;--paper: #ffffff;--ink: #0a0a0a;--ink-soft: #2a2a2a;--text-muted: #4a4a4a;--grid-dot: #0a0a0a14;--yellow: #fcd34d;--blue: #60a5fa;--red: #f87171;--mint: #6ee7b7;--pink: #f9a8d4;--lilac: #c4b5fd;--slate: #cbd5e1;--brand: var(--yellow);--cta: var(--blue);--danger: var(--red);--success: var(--mint);--accent-pink: var(--pink);--accent-lilac: var(--lilac);--tile-memorised-bg: #ecfdf5;--tile-drilling-bg: #eff6ff;--tile-learning-bg: #fffbeb;--tile-notstart-bg: #f8fafc;--status-memorised: var(--mint);--status-drilling: var(--blue);--status-learning: var(--yellow);--status-not-started:var(--slate);--difficulty-beginner: var(--mint);--difficulty-intermediate: var(--yellow);--difficulty-advanced: var(--pink);--cube-frame-bg: #e4e4e7;--cube-frame-accent: var(--red);--table-zebra: #fafafa;--footer-fine-text: #cbcbcb;--chart-paper: #ffffff;--chart-grid: #0a0a0a18;--chart-axis: var(--ink);--chart-ao100: #0046ad;--chart-area-op: .22;--goal-bar-fill: var(--brand);--milestone-card-bg: var(--paper)}:root[data-theme=cubecolors]{--bg: #fafafa;--paper: #fefefe;--ink: #0a0a0a;--ink-soft: #1a1a1a;--text-muted: #262626;--grid-dot: #0a0a0a14;--yellow: #ffd500;--blue: #0046ad;--red: #c41e3a;--mint: #009b48;--pink: #ff5800;--lilac: #ffffff;--slate: #ffffff;--brand: var(--yellow);--cta: var(--blue);--danger: var(--red);--success: var(--mint);--accent-pink: var(--pink);--accent-lilac: var(--lilac);--tile-memorised-bg: #c7ecd8;--tile-drilling-bg: #cfdcf4;--tile-learning-bg: #fff3a8;--tile-notstart-bg: #ffffff;--status-memorised: #009b48;--status-drilling: #ffd500;--status-learning: #ff5800;--status-not-started:#ffffff;--difficulty-beginner: #009b48;--difficulty-intermediate: #ffd500;--difficulty-advanced: #ff5800;--cube-frame-bg: #e4e4e7;--cube-frame-accent: #c41e3a;--table-zebra: #f5f5f5;--footer-fine-text: #cccccc;--chart-paper: #fefefe;--chart-grid: #0a0a0a18;--chart-axis: var(--ink);--chart-ao100: #0046ad;--chart-area-op: .22;--goal-bar-fill: var(--brand);--milestone-card-bg: var(--paper)}:root[data-theme=mono]{--bg: #fafafa;--paper: #ffffff;--ink: #0a0a0a;--ink-soft: #2a2a2a;--text-muted: #4a4a4a;--grid-dot: #0a0a0a14;--yellow: #ffffff;--blue: #ffffff;--red: #ffffff;--mint: #ffffff;--pink: #ffffff;--lilac: #ffffff;--slate: #ffffff;--brand: #ffffff;--cta: #ffffff;--danger: #ffffff;--success: #ffffff;--accent-pink: #ffffff;--accent-lilac: #ffffff;--tile-memorised-bg: #ffffff;--tile-drilling-bg: #ffffff;--tile-learning-bg: #ffffff;--tile-notstart-bg: #ffffff;--status-memorised: #ffffff;--status-drilling: #ffffff;--status-learning: #ffffff;--status-not-started:#ffffff;--difficulty-beginner: #ffffff;--difficulty-intermediate: #ffffff;--difficulty-advanced: #ffffff;--cube-frame-bg: #ffffff;--cube-frame-accent: #0a0a0a;--table-zebra: #f4f4f4;--footer-fine-text: #cbcbcb;--chart-paper: #ffffff;--chart-grid: #0a0a0a22;--chart-axis: var(--ink);--chart-ao100: #0a0a0a;--chart-area-op: .12;--goal-bar-fill: var(--ink);--milestone-card-bg: var(--paper)}:root[data-theme=classic][data-mode=dark]{--bg: #0f0f12;--paper: #1a1a1f;--ink: #ededed;--ink-soft: #c8c8c8;--text-muted: #a0a0a8;--grid-dot: #ededed14;--yellow: #d4b14a;--blue: #5b8bd1;--red: #d96868;--mint: #6bbf99;--pink: #d28ab0;--lilac: #a89cd6;--slate: #4a4a55;--brand: var(--yellow);--cta: var(--blue);--danger: var(--red);--success: var(--mint);--accent-pink: var(--pink);--accent-lilac: var(--lilac);--tile-memorised-bg: #14241d;--tile-drilling-bg: #15202e;--tile-learning-bg: #251f12;--tile-notstart-bg: #1c1c22;--status-memorised: var(--mint);--status-drilling: var(--blue);--status-learning: var(--yellow);--status-not-started:#3a3a44;--difficulty-beginner: var(--mint);--difficulty-intermediate: var(--yellow);--difficulty-advanced: var(--pink);--cube-frame-bg: #2a2a32;--cube-frame-accent: var(--red);--table-zebra: #16161b;--footer-fine-text: #6e6e78;--shadow-ink: #f0f0f0;--chart-paper: #1a1a1f;--chart-grid: #ededed22;--chart-axis: var(--ink);--chart-ao100: #5b8bd1;--chart-area-op: .28;--goal-bar-fill: var(--brand);--milestone-card-bg: var(--paper)}:root[data-theme=cubecolors][data-mode=dark]{--bg: #0e0e10;--paper: #18181b;--ink: #f0f0f0;--ink-soft: #d0d0d0;--text-muted: #9a9aa0;--grid-dot: #f0f0f014;--yellow: #ffd500;--blue: #2a6fd0;--red: #d92e48;--mint: #1ab056;--pink: #ff7a2e;--lilac: #e8e8e8;--slate: #e8e8e8;--brand: var(--yellow);--cta: var(--blue);--danger: var(--red);--success: var(--mint);--accent-pink: var(--pink);--accent-lilac: var(--lilac);--tile-memorised-bg: #0e2a18;--tile-drilling-bg: #0e1a2e;--tile-learning-bg: #2a2208;--tile-notstart-bg: #1c1c22;--status-memorised: #1ab056;--status-drilling: #ffd500;--status-learning: #ff7a2e;--status-not-started:#3a3a44;--difficulty-beginner: #1ab056;--difficulty-intermediate: #ffd500;--difficulty-advanced: #ff7a2e;--cube-frame-bg: #2a2a32;--cube-frame-accent: #d92e48;--table-zebra: #141418;--footer-fine-text: #6e6e78;--shadow-ink: #f0f0f0;--chart-paper: #18181b;--chart-grid: #f0f0f022;--chart-axis: var(--ink);--chart-ao100: #2a6fd0;--chart-area-op: .3;--goal-bar-fill: var(--brand);--milestone-card-bg: var(--paper)}:root[data-theme=mono][data-mode=dark]{--bg: #0a0a0a;--paper: #161616;--ink: #f0f0f0;--ink-soft: #d0d0d0;--text-muted: #9a9a9a;--grid-dot: #f0f0f014;--yellow: #0a0a0a;--blue: #0a0a0a;--red: #0a0a0a;--mint: #0a0a0a;--pink: #0a0a0a;--lilac: #0a0a0a;--slate: #0a0a0a;--brand: #0a0a0a;--cta: #0a0a0a;--danger: #0a0a0a;--success: #0a0a0a;--accent-pink: #0a0a0a;--accent-lilac: #0a0a0a;--tile-memorised-bg: #0a0a0a;--tile-drilling-bg: #0a0a0a;--tile-learning-bg: #0a0a0a;--tile-notstart-bg: #0a0a0a;--status-memorised: #0a0a0a;--status-drilling: #0a0a0a;--status-learning: #0a0a0a;--status-not-started:#0a0a0a;--difficulty-beginner: #0a0a0a;--difficulty-intermediate: #0a0a0a;--difficulty-advanced: #0a0a0a;--cube-frame-bg: #161616;--cube-frame-accent: #f0f0f0;--table-zebra: #121212;--footer-fine-text: #4a4a4a;--shadow-ink: #f0f0f0;--chart-paper: #161616;--chart-grid: #f0f0f022;--chart-axis: var(--ink);--chart-ao100: #f0f0f0;--chart-area-op: .16;--goal-bar-fill: var(--ink);--milestone-card-bg: var(--paper)}:root[data-mode=dark] .skip-link,:root[data-mode=dark] .hero-eyebrow,:root[data-mode=dark] .hero h1 .strike,:root[data-mode=dark] .footer-brand,:root[data-mode=dark] .footer-fine a{color:var(--bg)}:root[data-mode=dark] .hero-block,:root[data-mode=dark] .hero-block h1,:root[data-mode=dark] .hero-block h2,:root[data-mode=dark] .hero-block p,:root[data-mode=dark] .accent-block,:root[data-mode=dark] .panel--blue,:root[data-mode=dark] .panel--mint,:root[data-mode=dark] .panel--pink,:root[data-mode=dark] .panel--lilac,:root[data-mode=dark] .panel--blue h3,:root[data-mode=dark] .panel--mint h3,:root[data-mode=dark] .panel--pink h3,:root[data-mode=dark] .panel--lilac h3,:root[data-mode=dark] .btn--blue,:root[data-mode=dark] .btn--mint,:root[data-mode=dark] .btn--yellow,:root[data-mode=dark] .btn--red,:root[data-mode=dark] .difficulty-badge--beginner,:root[data-mode=dark] .difficulty-badge--intermediate,:root[data-mode=dark] .difficulty-badge--advanced,:root[data-mode=dark] .brand-mark,:root[data-mode=dark] .pr-headline,:root[data-mode=dark] .pr-headline-num,:root[data-mode=dark] .goal-headline .goal-target,:root[data-mode=dark] .goal-stat.gs--current,:root[data-mode=dark] .goal-stat.gs--gap,:root[data-mode=dark] .goal-stat.gs--target,:root[data-mode=dark] .goal-stat.gs--current .gs-k,:root[data-mode=dark] .goal-stat.gs--gap .gs-k,:root[data-mode=dark] .goal-stat.gs--target .gs-k,:root[data-mode=dark] .goal-stat.gs--current .gs-v,:root[data-mode=dark] .goal-stat.gs--gap .gs-v,:root[data-mode=dark] .goal-stat.gs--target .gs-v,:root[data-mode=dark] .milestone-snapshot-row .ms-ao100,:root[data-mode=dark] .milestone-stripe,:root[data-mode=dark] .milestone-stripe time{color:var(--paper)}:root[data-theme=mono][data-mode=dark] .hero-block,:root[data-theme=mono][data-mode=dark] .hero-block h1,:root[data-theme=mono][data-mode=dark] .hero-block h2,:root[data-theme=mono][data-mode=dark] .hero-block p,:root[data-theme=mono][data-mode=dark] .accent-block,:root[data-theme=mono][data-mode=dark] .panel--blue,:root[data-theme=mono][data-mode=dark] .panel--mint,:root[data-theme=mono][data-mode=dark] .panel--pink,:root[data-theme=mono][data-mode=dark] .panel--lilac,:root[data-theme=mono][data-mode=dark] .panel--blue h3,:root[data-theme=mono][data-mode=dark] .panel--mint h3,:root[data-theme=mono][data-mode=dark] .panel--pink h3,:root[data-theme=mono][data-mode=dark] .panel--lilac h3,:root[data-theme=mono][data-mode=dark] .btn--blue,:root[data-theme=mono][data-mode=dark] .btn--mint,:root[data-theme=mono][data-mode=dark] .btn--yellow,:root[data-theme=mono][data-mode=dark] .btn--red,:root[data-theme=mono][data-mode=dark] .difficulty-badge--beginner,:root[data-theme=mono][data-mode=dark] .difficulty-badge--intermediate,:root[data-theme=mono][data-mode=dark] .difficulty-badge--advanced,:root[data-theme=mono][data-mode=dark] .brand-mark,:root[data-theme=mono][data-mode=dark] .pr-headline,:root[data-theme=mono][data-mode=dark] .pr-headline-num,:root[data-theme=mono][data-mode=dark] .goal-headline .goal-target,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--current,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--gap,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--target,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--current .gs-k,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--gap .gs-k,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--target .gs-k,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--current .gs-v,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--gap .gs-v,:root[data-theme=mono][data-mode=dark] .goal-stat.gs--target .gs-v,:root[data-theme=mono][data-mode=dark] .milestone-snapshot-row .ms-ao100{color:var(--ink)}:root[data-theme=mono] .nav-link.is-active{background:var(--ink);color:var(--paper)}:root[data-theme=mono] .theme-toggle button.is-on{background:var(--ink);color:var(--paper);box-shadow:inset 2px 2px 0 var(--paper)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.6;background-image:radial-gradient(circle,var(--grid-dot) 1px,transparent 1px);background-size:24px 24px;background-position:0 0}.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--brand);padding:8px 16px;font-family:var(--font-display);z-index:9999}.skip-link:focus{left:12px;top:12px}:focus-visible{outline:3px solid var(--ink);outline-offset:3px;box-shadow:4px 4px 0 var(--cta)}select:focus-visible,input[type=number]:focus-visible,input[type=text]:focus-visible,input[type=search]:focus-visible{outline:none;box-shadow:none}.status-pill:focus-visible{box-shadow:none}.shell{max-width:1200px;margin:0 auto;padding:0 24px}section{padding:64px 0;border-top:var(--border-w-fat) solid var(--ink)}section:first-of-type{border-top:0}.section-tag{display:inline-block;font-family:var(--font-display);font-size:13px;letter-spacing:.08em;text-transform:uppercase;background:var(--ink);color:var(--bg);padding:6px 12px;margin-bottom:24px;transform:rotate(-1deg)}h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.05;margin:0 0 16px;letter-spacing:-.01em}h1{font-size:clamp(40px,8vw,72px)}h2{font-size:clamp(28px,4.5vw,44px);margin-bottom:24px}h3{font-size:22px}h4{font-size:18px}p{margin:0 0 16px;max-width:68ch}a{color:inherit}code,kbd,.mono{font-family:var(--font-mono);font-feature-settings:"calt" 0}header.site{background:var(--bg);border-bottom:var(--border-w-fat) solid var(--ink);position:sticky;top:0;z-index:50}.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1200px;margin:0 auto;gap:16px;flex-wrap:wrap}.brand{font-family:var(--font-display);font-size:28px;letter-spacing:-.02em;display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand-mark{width:36px;height:36px;background:var(--brand);border:var(--border-w) solid var(--ink);box-shadow:var(--shadow-sm);display:grid;place-items:center;font-size:18px;transform:rotate(-4deg)}.nav-links{display:flex;gap:10px;flex-wrap:wrap}.nav-link{font-family:var(--font-ui);font-weight:700;font-size:14px;text-decoration:none;color:var(--ink);background:var(--paper);border:var(--border-w) solid var(--ink);box-shadow:var(--shadow-sm);padding:8px 14px;letter-spacing:.02em;text-transform:uppercase;transition:transform 80ms ease,box-shadow 80ms ease;min-height:44px;display:inline-flex;align-items:center}.nav-link:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--shadow-ink)}.nav-link:active{transform:translate(2px,2px);box-shadow:0 0 0 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solid var(--ink);font-size:22px;gap:8px}.brand-mark{width:28px;height:28px;font-size:14px}.nav{padding:56px 14px 10px;gap:10px}.nav-links{gap:6px}.nav-link{font-size:12px;padding:6px 10px;letter-spacing:.01em;min-height:38px}.theme-toggle button{font-size:10.5px;padding:6px 8px;min-height:32px;letter-spacing:.02em}}.brutal-card{background:var(--paper);border:var(--border-w-fat) solid var(--ink);box-shadow:var(--shadow-xl)}.brutal-tile{background:var(--paper);border:var(--border-w) solid var(--ink);box-shadow:var(--shadow-sm)}.btn{font-family:var(--font-ui);font-weight:700;font-size:15px;letter-spacing:.02em;text-transform:uppercase;background:var(--paper);color:var(--ink);border:var(--border-w) solid var(--ink);box-shadow:var(--shadow);padding:12px 18px;cursor:pointer;transition:transform 80ms ease,box-shadow 80ms ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;min-height:44px}.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--shadow-ink)}.btn:active{transform:translate(3px,3px);box-shadow:0 0 0 var(--shadow-ink)}.btn--blue{background:var(--cta)}.btn--red{background:var(--danger);color:var(--ink)}.btn--mint{background:var(--success)}.btn--yellow{background:var(--brand)}.btn--ink{background:var(--ink);color:var(--bg)}.hero{padding-top:56px;padding-bottom:64px;position:relative}.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}@media(max-width:880px){.hero-grid{grid-template-columns:1fr}}.hero-block{background:var(--brand);border:var(--border-w-fat) solid var(--ink);box-shadow:var(--shadow-xl);padding:40px;position:relative}.hero-eyebrow{display:inline-block;font-family:var(--font-display);font-size:12px;letter-spacing:.12em;text-transform:uppercase;background:var(--ink);color:var(--brand);padding:4px 10px;margin-bottom:16px}.hero h1{margin-bottom:12px}.hero h1 .strike{display:inline-block;background:var(--ink);color:var(--brand);padding:0 12px;transform:rotate(-2deg) 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