:root{--bg: #f6f5f9;--surface: #ffffff;--surface-2: #f0eef6;--line: #e2dff0;--line-strong: #cdc8e4;--text: #1b1830;--text-2: #5c5775;--text-3: #6e6a86;--accent: #5a4be7;--accent-soft: #ece9fc;--accent-text: #3b2fb0;--on-accent: #ffffff;--ok: #0a6e4a;--ok-soft: #e2f4ec;--no: #c5362f;--no-soft: #fae9e8;--warn: #8a5306;--warn-soft: #fbeeda;--flag: #b45309;--flag-soft: #fdf0d5;--flag-text: #92400e;--radius: 14px;--radius-sm: 10px;--font-display: "Space Grotesk", system-ui, sans-serif;--font-body: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--cert-accent: var(--accent);--cert-accent-soft: var(--accent-soft);--cert-accent-text: var(--accent-text);--fs-11: 11px;--fs-12: 12px;--fs-13: 13px;--fs-14: 14px;--fs-15: 15px;--fs-16: 16px;--fs-17: 17px;--fs-20: 20px;--fs-24: 24px;--fs-32: 32px;--fs-42: 42px}@media (prefers-color-scheme: dark){:root{--bg: #0f0e16;--surface: #1a1825;--surface-2: #221f30;--line: #2c2940;--line-strong: #3a3654;--text: #ecebf5;--text-2: #a8a3c2;--text-3: #8b87a3;--accent: #8b7dff;--accent-soft: #241f3d;--accent-text: #b9aeff;--on-accent: #14121f;--ok: #45c98e;--ok-soft: #16271f;--no: #f0726a;--no-soft: #2a1816;--warn: #e0a04a;--warn-soft: #2a2113;--flag: #f0b04a;--flag-soft: #2d2413;--flag-text: #f5c26b}.timer.warn{color:var(--warn)}}[data-theme=light]{--bg: #f6f5f9;--surface: #ffffff;--surface-2: #f0eef6;--line: #e2dff0;--line-strong: #cdc8e4;--text: #1b1830;--text-2: #5c5775;--text-3: #6e6a86;--accent: #5a4be7;--accent-soft: #ece9fc;--accent-text: #3b2fb0;--on-accent: #ffffff;--ok: #0a6e4a;--ok-soft: #e2f4ec;--no: #c5362f;--no-soft: #fae9e8;--warn: #8a5306;--warn-soft: #fbeeda;--flag: #b45309;--flag-soft: #fdf0d5;--flag-text: #92400e}[data-theme=dark]{--bg: #0f0e16;--surface: #1a1825;--surface-2: #221f30;--line: #2c2940;--line-strong: #3a3654;--text: #ecebf5;--text-2: #a8a3c2;--text-3: #8b87a3;--accent: #8b7dff;--accent-soft: #241f3d;--accent-text: #b9aeff;--on-accent: #14121f;--ok: #45c98e;--ok-soft: #16271f;--no: #f0726a;--no-soft: #2a1816;--warn: #e0a04a;--warn-soft: #2a2113;--flag: #f0b04a;--flag-soft: #2d2413;--flag-text: #f5c26b}[data-theme=dark] .timer.warn{color:var(--warn)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.6;-webkit-font-smoothing:antialiased;overscroll-behavior-x:none}.app{max-width:720px;margin:0 auto;padding:1.5rem 1.25rem 3rem}.masthead{display:flex;align-items:center;gap:14px;margin-bottom:1.5rem}.mast-mark{font-family:var(--font-mono);font-weight:500;font-size:var(--fs-20);color:#fff;background:var(--cert-accent);width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:12px;letter-spacing:-1px}.masthead h1{font-family:var(--font-display);font-size:var(--fs-24);font-weight:700;letter-spacing:-.5px}.mast-sub{font-size:var(--fs-13);color:var(--text-2)}.tabs{display:flex;gap:6px;margin-bottom:1.5rem;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{font-family:var(--font-body);font-size:var(--fs-14);padding:12px 16px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--text-2);cursor:pointer;transition:all .15s;flex-shrink:0}.tab:hover{border-color:var(--line-strong)}.tab.active{background:var(--cert-accent);border-color:var(--cert-accent);color:var(--on-accent)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem 1.4rem;margin-bottom:1rem}.card h3{font-family:var(--font-display);font-size:var(--fs-15);font-weight:500;margin-bottom:.8rem}.card-eyebrow{font-family:var(--font-mono);font-size:var(--fs-11);letter-spacing:.05em;color:var(--text-3);text-transform:uppercase;margin-bottom:4px}.muted{color:var(--text-2);font-size:var(--fs-14)}.center-num{align-self:center}.mode-toggle{display:flex;gap:10px;margin-bottom:1rem}.mode-btn{flex:1;text-align:left;cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:3px;transition:all 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-1}.domain-weight{font-family:var(--font-mono);font-size:var(--fs-13);color:var(--cert-accent-text)}.domain-name{font-size:var(--fs-13);font-weight:500}.domain-sub{font-size:var(--fs-12);color:var(--text-3)}.count-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.chip{font-size:var(--fs-13);padding:11px 16px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--text-2);cursor:pointer;transition:all .15s}.chip:hover{border-color:var(--line-strong)}.chip.on{background:var(--cert-accent-soft);border-color:var(--cert-accent);color:var(--cert-accent-text)}.btn{font-family:var(--font-body);font-size:var(--fs-14);padding:12px 20px;border-radius:var(--radius-sm);border:1px solid var(--line-strong);background:var(--surface);color:var(--text);cursor:pointer;transition:all .15s}.btn:hover{background:var(--surface-2)}.btn:active{transform:scale(.98)}.btn.primary{background:var(--cert-accent);border-color:var(--cert-accent);color:var(--on-accent);font-weight:500}.btn.primary:hover{filter:brightness(1.08)}.btn.ghost{border-color:transparent;color:var(--text-3)}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:1rem}.actions.center{justify-content:center}.run-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:.8rem}.progress{height:6px;background:var(--surface-2);border-radius:3px;overflow:hidden;margin-bottom:1.2rem}.progress-fill{height:100%;background:var(--cert-accent);border-radius:3px;transition:width .3s}.timer{font-family:var(--font-mono);font-size:var(--fs-15);font-weight:500;padding:5px 14px;border-radius:999px;background:var(--surface-2);color:var(--text)}.timer.warn{background:var(--warn-soft);color:#8a5306}.timer.danger{background:var(--no-soft);color:var(--no)}@keyframes quiz-question-in{0%{opacity:0;transform:translate(8px)}to{opacity:1;transform:translate(0)}}.quiz-split{animation:quiz-question-in .18s ease-out}@keyframes opt-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.opt.correct{animation:opt-pulse .4s ease-out}@keyframes opt-shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.opt.wrong{animation:opt-shake .3s ease-in-out}@keyframes btn-saved-in{0%{transform:scale(.9)}to{transform:scale(1)}}.btn-saved{animation:btn-saved-in .25s ease-out}.quiz-split{display:flex;flex-direction:column;gap:1rem}@media (min-width: 920px){.quiz-split.has-explain{flex-direction:row;align-items:flex-start}.quiz-split.has-explain .quiz-question-col,.quiz-split.has-explain .quiz-explain-col{flex:1 1 50%;min-width:0}}.q-meta{display:flex;gap:8px;align-items:center;margin-bottom:.9rem}.q-domain{font-size:var(--fs-12);background:var(--surface-2);color:var(--text-2);padding:4px 12px;border-radius:999px}.klvl{font-family:var(--font-mono);font-size:var(--fs-12);padding:3px 10px;border-radius:999px}.klvl.k1{background:var(--ok-soft);color:var(--ok)}.klvl.k2{background:var(--accent-soft);color:var(--accent-text)}.klvl.k3{background:var(--warn-soft);color:var(--warn)}.q-text{font-size:var(--fs-16);line-height:1.55;margin-bottom:1.2rem}.options{display:flex;flex-direction:column;gap:8px}.opt{display:flex;gap:12px;align-items:flex-start;text-align:left;font-family:var(--font-body);font-size:var(--fs-14);line-height:1.45;padding:13px 16px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;transition:all .12s;width:100%}.opt:not(:disabled):hover{border-color:var(--accent);background:var(--accent-soft)}.opt:disabled{cursor:default}.opt-letter{font-family:var(--font-mono);font-size:var(--fs-13);color:var(--text-3);min-width:14px}.opt.picked{border-color:var(--accent);background:var(--accent-soft)}.opt.correct{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}.opt.wrong{border-color:var(--no);background:var(--no-soft);color:var(--no)}.opt.reveal{border-color:var(--ok);background:var(--ok-soft);color:var(--ok);opacity:.7}.explanation{margin-top:1.1rem;font-size:var(--fs-13);line-height:1.6;color:var(--text-2);background:var(--surface-2);border-left:3px solid var(--accent);padding:12px 16px;border-radius:0 var(--radius-sm) var(--radius-sm) 0}.result{text-align:center}.result-score{font-family:var(--font-display);font-size:var(--fs-42);font-weight:700;letter-spacing:-1px}.verdict{font-family:var(--font-display);font-size:var(--fs-16);font-weight:500;margin:6px 0 .6rem}.verdict.ok{color:var(--ok)}.verdict.no{color:var(--no)}.review-item{padding:14px 0;border-bottom:1px solid var(--line)}.review-item:last-child{border-bottom:none}.review-q{font-size:var(--fs-14);font-weight:500;margin-bottom:8px;line-height:1.5}.review-a{font-size:var(--fs-13);margin:3px 0}.review-a.ok,.ok{color:var(--ok)}.review-a.no,.no{color:var(--no)}.review-exp{font-size:var(--fs-13);color:var(--text-2);margin-top:6px;line-height:1.5}.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:1rem}.flash{width:100%;height:210px;cursor:pointer;position:relative;perspective:1000px;text-align:center;color:var(--text);touch-action:none}.flash-card-inner{position:relative;width:100%;height:100%;transition:transform .4s;transform-style:preserve-3d}.flash-card-inner.flipped{transform:rotateY(180deg)}.flash-card-front,.flash-card-back{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:1rem}.flash-card-back{transform:rotateY(180deg)}@media (prefers-reduced-motion: reduce){.flash-card-inner{transition:none}}.flash-front{font-family:var(--font-display);font-size:var(--fs-17);font-weight:500;line-height:1.4}.flash-back{font-size:var(--fs-14);color:var(--text-2);white-space:pre-line;line-height:1.7;text-align:left}.flash-hint{font-size:var(--fs-12);color:var(--text-3)}.flash-stack{position:relative;touch-action:none}.flash-stack-peek{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}.flash-stack-peek.depth-1{transform:translateY(8px) scale(.97);opacity:.7;z-index:1}.flash-stack-peek.depth-2{transform:translateY(16px) scale(.94);opacity:.4;z-index:0}.flash-stack .flash{z-index:2}.syl-head{font-family:var(--font-mono);font-size:var(--fs-12);color:var(--accent-text);margin-bottom:.8rem}.syl-item{padding:11px 0;border-bottom:1px solid var(--line)}.syl-item:last-child{border-bottom:none}.syl-kw{font-weight:500;font-size:var(--fs-14)}.syl-desc{font-size:var(--fs-13);color:var(--text-2);margin-top:2px;line-height:1.5}.syl-chapter{border:1px solid var(--line);border-radius:8px;margin-bottom:8px;overflow:hidden}.syl-chapter-summary{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;cursor:pointer;font-weight:500;list-style:none}.syl-chapter-summary::-webkit-details-marker{display:none}.syl-chapter-progress{display:flex;align-items:center;gap:8px}.syl-chapter-progress .bar{width:60px}.syl-chapter .syl-item{padding:8px 14px;border-top:1px solid var(--line)}.gamification-strip{display:flex;align-items:center;gap:.5rem;font-size:var(--fs-13);color:var(--text-2);margin-bottom:.75rem;flex-wrap:wrap}.gam-sep{color:var(--text-3)}.readiness-card p{margin:0;font-size:var(--fs-14)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:1rem}.stat{background:var(--surface-2);border-radius:var(--radius-sm);padding:14px;text-align:center}.stat-val{font-family:var(--font-display);font-size:var(--fs-24);font-weight:700}.stat-lbl{font-size:var(--fs-11);color:var(--text-3);margin-top:2px}.bar-row{margin-bottom:12px}.bar-head{display:flex;justify-content:space-between;font-size:var(--fs-13);margin-bottom:4px}.bar-val.ok{color:var(--ok)}.bar-val.no{color:var(--no)}.bar-val.none{color:var(--text-3)}.bar{height:5px;background:var(--surface-2);border-radius:3px;overflow:hidden}.bar-fill{height:100%;border-radius:3px;background:var(--text-3)}.bar-fill.ok{background:var(--ok)}.bar-fill.no{background:var(--no)}.bar-fill.none{background:transparent}.card.note{font-size:var(--fs-13);line-height:1.6;color:var(--text-2);background:var(--surface-2);border:none}.card.note strong{color:var(--text)}.foot{margin-top:2rem;text-align:center;font-size:var(--fs-12);color:var(--text-3)}.foot-version{margin-left:1rem;opacity:.5}.foot-actions{display:flex;justify-content:center;gap:.9rem;margin-top:.55rem}.foot-link{padding:0;border:0;background:none;color:var(--accent-text);font:inherit;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.foot-link:hover{color:var(--text)}.foot-privacy{max-width:540px;margin:.5rem auto 0;font-size:var(--fs-12);line-height:1.5}.back-btn{margin-bottom:1rem;display:block;color:var(--text-2);border-color:var(--line)}@keyframes quiz-phase-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.quiz{animation:quiz-phase-in .2s ease-out}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion: reduce){*{transition:none!important}.quiz,.quiz-split,.opt.correct,.opt.wrong,.btn-saved{animation:none!important}}@media (max-width: 480px){.mode-toggle{flex-direction:column}.stat-grid{grid-template-columns:1fr}.quiz .actions{position:sticky;bottom:0;background:var(--surface);padding-top:12px;padding-bottom:12px;border-top:1px solid var(--line);z-index:5}}.onboarding-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:var(--bg);overflow-y:auto;padding:1.5rem 1.25rem 3rem}.onboarding-overlay .onboarding{max-width:720px;margin:0 auto}.ob-close{position:absolute;top:1rem;right:1rem}.onboarding{display:flex;flex-direction:column;align-items:center;text-align:center;padding:2rem 0 3rem;gap:2.5rem}.ob-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:var(--fs-12);padding:6px 14px;border-radius:999px;background:var(--accent-soft);color:var(--accent-text)}.ob-name-tag{font-family:var(--font-mono);font-size:var(--fs-13);color:var(--text-3);letter-spacing:.02em;margin-bottom:-1.5rem}.ob-hero{font-family:var(--font-display);font-size:var(--fs-32);font-weight:700;line-height:1.3;letter-spacing:-.5px}.ob-subtitle{font-size:var(--fs-15);color:var(--text-2);max-width:420px;line-height:1.5;margin-top:-1.5rem}.ob-section{width:100%;text-align:left}.ob-section-title{font-family:var(--font-display);font-size:var(--fs-20);font-weight:700;margin-bottom:1rem;text-align:center}.ob-cards,.ob-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;width:100%}.ob-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem 1rem;display:flex;flex-direction:column;gap:6px}.ob-icon{font-size:var(--fs-24)}.ob-card-title{font-family:var(--font-display);font-weight:500;font-size:var(--fs-14)}.ob-card-desc{font-size:var(--fs-12);color:var(--text-2);line-height:1.5}.ob-stats{display:flex;gap:8px;align-items:center;font-size:var(--fs-13);color:var(--text-3);flex-wrap:wrap;justify-content:center}.ob-cta{padding:14px 40px;font-size:var(--fs-16)}.ob-disclaimer{font-size:var(--fs-12);color:var(--text-3)}.ob-mockup-wrap{width:100%;max-width:420px;margin:0 auto}.ob-social{width:100%;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;font-size:var(--fs-13);color:var(--text-2)}.ob-social-link{color:var(--accent-text);text-decoration:none;font-weight:500}.ob-social-link:hover{text-decoration:underline}.ob-future-note{font-size:var(--fs-12);color:var(--text-3)}.ob-faq{width:100%;display:flex;flex-direction:column;gap:8px}.ob-faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);overflow:hidden}.ob-faq-q{width:100%;text-align:left;padding:14px 16px;cursor:pointer;background:none;border:none;font-family:var(--font-body);font-size:var(--fs-14);font-weight:500;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:12px}.ob-faq-q:hover{background:var(--surface-2)}.ob-faq-a{padding:0 16px 14px;font-size:var(--fs-13);color:var(--text-2);line-height:1.5}.ob-author{width:100%;text-align:center;padding-top:1.5rem;border-top:1px solid var(--line)}.ob-author-bio{font-size:var(--fs-13);color:var(--text-2);margin:-.4rem 0 1rem;line-height:1.5}.ob-author-links{display:flex;gap:16px;justify-content:center}.ob-author-link{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-mono);font-size:var(--fs-13);color:var(--accent-text);text-decoration:none}.ob-author-link:hover{text-decoration:underline}.ob-feedback{width:100%;padding:1.25rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.ob-feedback p{max-width:580px;margin:0 auto .75rem;color:var(--text-2);font-size:var(--fs-13);line-height:1.55}.ob-feedback .ob-feedback-privacy{color:var(--text-3);font-size:var(--fs-12)}.lang-toggle{font-family:var(--font-mono);font-size:var(--fs-12);padding:5px 12px}.theme-toggle{font-size:var(--fs-14);padding:5px 10px}.search-input{width:100%;padding:10px 16px;margin-bottom:1rem;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:var(--fs-14)}.search-input:focus{outline:none;border-color:var(--accent)}.glossary-term-of-day{border-color:var(--accent)}.glossary-az-index{position:sticky;top:0;z-index:4;display:flex;flex-wrap:wrap;gap:2px;background:var(--bg);padding:8px 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