@font-face{font-family:Noto Sans Armenian;font-style:normal;font-weight:400 900;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-armenian-armenian.woff2) format("woff2");unicode-range:U+0308,U+0530-058F,U+2010,U+2024,U+25CC,U+FB13-FB17}@font-face{font-family:Noto Sans Armenian;font-style:normal;font-weight:400 900;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-armenian-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Noto Sans Armenian;font-style:normal;font-weight:400 900;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-armenian-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Noto Sans Mono;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/noto-sans-mono-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Noto Sans Mono;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/noto-sans-mono-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{color-scheme:light;--ink-900: #16111f;--ink-700: #3a3350;--ink-500: #5f5878;--ink-400: #716989;--ink-300: #9b94ad;--line: #e8e2f5;--line-soft: #ece7f8;--line-strong: #d9d1ec;--surface: #f4f2fb;--surface-2: #ffffff;--surface-3: #efecf8;--surface-glass: rgba(255, 255, 255, .82);--surface-glass-strong: rgba(255, 255, 255, .95);--surface-fade: rgba(244, 242, 251, 0);--glass: rgba(255, 255, 255, .72);--glass-strong: rgba(255, 255, 255, .86);--glass-panel: rgba(255, 255, 255, .99);--glass-line: #e8e2f5;--glass-line-strong: #d9d1ec;--glass-blur: saturate(180%) blur(20px);--glass-sheen: inset 0 1px 0 rgba(255, 255, 255, .7);--brand-050: #f7f3ff;--brand-100: #f4efff;--brand-500: #7c3aed;--brand-600: #7c3aed;--brand-700: #5b28c9;--brand-ink: #4c1d95;--brand-text: #6d28d9;--grad-brand: linear-gradient(135deg, #7c3aed 0%, #5b28c9 100%);--grad-ink: linear-gradient(135deg, #2e1065 0%, #4c1d95 100%);--ok: #15803d;--green-ink: #166534;--ok-soft: rgba(21, 128, 61, .09);--ok-line: rgba(21, 128, 61, .28);--warn: #a16207;--warn-soft: rgba(161, 98, 7, .09);--warn-line: rgba(161, 98, 7, .28);--amber: #a16207;--bad: #b91c1c;--bad-soft: rgba(185, 28, 28, .07);--bad-line: rgba(185, 28, 28, .26);--font: "Noto Sans Armenian", "Segoe UI", system-ui, -apple-system, sans-serif;--fs-xs: .8125rem;--fs-sm: .9375rem;--fs-md: 1rem;--fs-lg: 1.125rem;--fs-xl: clamp(1.25rem, 3.2vw, 1.4375rem);--fs-2xl: clamp(1.625rem, 3.2vw, 2.125rem);--fs-3xl: clamp(2rem, 5.2vw, 3.25rem);--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 24px;--s-6: 32px;--s-7: 48px;--s-8: 64px;--s-9: 88px;--r-sm: .75rem;--r-md: .875rem;--r-lg: 1rem;--r-xl: 1.25rem;--r-2xl: 1.5rem;--r-full: 999px;--radius: var(--r-md);--sh-1: 0 1px 2px rgba(22, 17, 31, .04);--sh-2: 0 1px 3px rgba(22, 17, 31, .04);--sh-3: 0 20px 52px rgba(22, 17, 31, .12);--sh-brand: 0 10px 28px rgba(124, 58, 237, .26);--max-width: 1120px;--ring: 0 0 0 3px rgba(124, 58, 237, .3);--ink: #17141c;--ink-2: #45404f;--ink-3: #55505f;--muted: #6a6475;--muted-2: #b3aebd;--bg: #faf9fb;--line-2: rgba(23, 20, 28, .12);--fill: rgba(23, 20, 28, .05);--fill-strong: rgba(23, 20, 28, .07);--purple-2: #5b21b6;--purple-tint: #f6f2fe;--purple-on-dark: #c4b5fd;--green-soft: #e7f6ec;--amber-ink: #8a5300;--amber-soft: #fdf3e3;--red-soft: #fdecec;--dark: #17141c;--dark-text-2: #c9c4d2;--glass-card: rgba(255, 255, 255, .78);--r-pill: 999px;--shadow-card: 0 30px 60px -32px rgba(23, 20, 28, .35), 0 2px 6px rgba(23, 20, 28, .04);--shadow-cta: 0 8px 20px -10px rgba(109, 40, 217, .7);--ease-out: cubic-bezier(.22, .61, .36, 1);--font-mono: "Noto Sans Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;--white: var(--surface-2);--black: var(--ink-900);--purple: var(--brand-600);--purple-dark: var(--brand-700);--purple-soft: var(--brand-050);--grey-100: var(--surface-2);--grey-200: var(--line);--grey-500: var(--ink-500);--green: var(--ok);--red: var(--bad)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font);font-size:var(--fs-md);color:var(--ink-900);background:var(--surface);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{margin:0 0 .4em;font-weight:600}h1{font-size:var(--fs-3xl);line-height:1.14;letter-spacing:-.018em}h2{font-size:var(--fs-2xl);line-height:1.18;letter-spacing:-.015em}h3{font-size:1.125rem;line-height:1.28;letter-spacing:-.008em}h4{font-size:1rem;line-height:1.32;letter-spacing:-.004em}p{margin:0 0 1em}h1,h2{text-wrap:balance}h3,p{text-wrap:pretty}a{color:var(--brand-text);text-underline-offset:3px}img{max-width:100%;display:block}:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:var(--r-sm)}::selection{background:var(--brand-100);color:var(--brand-ink)}.shell{display:flex;flex-direction:column;min-height:100%}.skip-link{position:fixed;top:var(--s-3);left:var(--s-3);z-index:100;padding:10px 16px;border-radius:var(--r-sm);background:var(--ink-900);color:var(--surface);font-weight:700;text-decoration:none;transform:translateY(calc(-100% - var(--s-5)));transition:transform .16s ease}.skip-link:focus{transform:translateY(0)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--s-5)}.section{padding-block:var(--s-9)}.section-tight{padding-block:var(--s-7)}.section-alt{background:var(--surface-2)}.site-header{position:sticky;top:0;border-bottom:1px solid transparent;background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--glass-sheen);transition:box-shadow .24s ease,border-color .24s ease;z-index:40}.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--glass-sheen),0 8px 20px #16111f0d}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.site-header{background:var(--surface-glass-strong)}}.site-header .container{position:relative;display:flex;align-items:center;gap:14px;min-height:64px;padding-block:10px}.header-right{display:flex;align-items:center;gap:var(--s-2);flex:0 0 auto;margin-left:auto;min-width:0}.header-exam{display:flex;flex:1 1 auto;justify-content:flex-end;min-width:0}.nav-quiet{min-height:44px;padding:8px 12px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:500;white-space:nowrap;cursor:pointer;transition:background .16s ease}.nav-quiet:hover{background:var(--fill);color:var(--ink)}.account{display:inline-flex;align-items:center;gap:var(--s-2);min-height:44px;padding:5px 12px 5px 5px;border:1px solid rgba(23,20,28,.1);border-radius:var(--r-pill);background:var(--surface-2);color:var(--ink);text-decoration:none;font-size:14px;font-weight:500;max-width:200px;transition:border-color .16s ease}.account:hover{border-color:var(--purple)}.account img,.account-initial{flex:none;width:32px;height:32px;border-radius:50%;object-fit:cover}.account-initial{display:grid;place-items:center;background:var(--purple-soft);color:var(--purple-2);font-weight:700}.account-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-pro{flex:none;padding:2px 6px;border-radius:6px;background:var(--purple-soft);color:var(--purple-2);font-size:11px;font-weight:700;letter-spacing:.04em}.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px;border-radius:var(--r-md);color:var(--ink);text-decoration:none;line-height:0}.brand-name{font-size:16px;font-weight:600;letter-spacing:-.01em;line-height:1;color:var(--ink)}.brand svg{display:block;border-radius:9px;transition:transform .16s ease}.brand:hover svg{transform:scale(1.05)}.nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;margin-left:6px;min-width:0}.nav a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;white-space:nowrap;transition:background .16s ease,color .16s ease}.nav a:hover{background:var(--fill);color:var(--ink)}.nav a.active{background:var(--fill-strong);color:var(--ink)}.header-cta{min-height:44px;padding:10px 16px;border-radius:12px;font-size:14px;box-shadow:var(--shadow-cta)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);min-height:3.25rem;padding:.875rem 1.625rem;border-radius:var(--r-md);border:1px solid transparent;background:var(--grad-brand);color:#fff;font:inherit;font-weight:600;letter-spacing:-.005em;cursor:pointer;text-decoration:none;box-shadow:var(--sh-brand);transition:transform .12s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease}@media (hover: hover){.btn:hover:not(:disabled){background:#9184d933;border-color:var(--brand-500)}}.btn:active:not(:disabled){background:#9184d947;transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn-ghost{background:var(--surface-2);background-image:none;color:var(--ink);border-color:var(--line-strong);box-shadow:var(--sh-2);padding:.875rem 1.375rem}.btn-ghost:hover:not(:disabled){background:#e9e9ed0f;border-color:#e9e9ed47;box-shadow:var(--sh-2)}.btn-quiet{background:transparent;background-image:none;color:var(--ink-500);border-color:transparent;box-shadow:none;font-weight:600}.btn-quiet:hover:not(:disabled){color:var(--ink-900);background:var(--surface-2);box-shadow:none;transform:none}.btn-sm{padding:9px 16px;font-size:var(--fs-sm);border-radius:var(--r-sm)}.btn-lg{padding:17px 32px;font-size:var(--fs-lg)}.btn-block{width:100%}.card{border:1px solid var(--line);border-radius:var(--r-xl);padding:var(--s-5);background:var(--surface-2);box-shadow:var(--sh-2)}.card-lift{transition:transform .18s ease,box-shadow .18s ease}.card-lift:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}.grid{display:grid;gap:var(--s-5)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.muted{color:var(--ink-500)}.center{text-align:center}.stack{display:flex;flex-direction:column;gap:var(--s-4)}.row{display:flex;gap:var(--s-3);align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-full);background:var(--brand-050);color:var(--brand-ink);font-size:var(--fs-xs);font-weight:700;letter-spacing:.01em;border:1px solid var(--brand-100)}.deck-marks{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:var(--s-2)}.row-video{font-size:.95em}.badge-solid{background:var(--grad-brand);color:var(--surface);border-color:transparent}.badge-ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}.badge-bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:var(--fs-xs);font-weight:700;color:var(--brand-text)}.hero{padding:var(--s-9) 0 var(--s-8);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:-30% -10% auto 40%;height:120%;background:radial-gradient(closest-side,#7c3aed12,#7c3aed00);pointer-events:none}.hero .container{position:relative}.hero-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:clamp(28px,5vw,56px);align-items:center}.hero h1{max-width:16ch;font-size:clamp(34px,5.2vw,56px);line-height:1.04;font-weight:700;letter-spacing:-.025em}.hero p.lead{font-size:clamp(17px,1.6vw,19px);line-height:1.55;color:var(--ink-2);max-width:46ch}.hero p.lead strong{color:var(--ink);font-weight:600}.kicker{display:inline-flex;align-items:center;gap:var(--s-2);margin-bottom:var(--s-3);color:var(--brand-text);font-size:var(--fs-xs);font-weight:600;letter-spacing:.06em}.kicker:before{content:"";width:22px;height:1.5px;background:var(--brand-600)}.cta-note{margin:var(--s-3) 0 0;color:var(--ink-500);font-size:var(--fs-sm)}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s-4);margin-top:var(--s-6)}.stat-band{background:var(--surface-2);border-block:1px solid var(--line);padding-block:clamp(1.5rem,3vw,2rem)}.hero{padding-block:clamp(2.5rem,6vw,4.5rem)}.landing-features{padding-block:clamp(3rem,6vw,4.5rem)}.landing-close{padding-block:clamp(3.5rem,7vw,5rem)}.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s-5);text-align:center}.stat-value{font-size:30px;font-weight:500;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.stat-label{margin-top:4px;color:var(--ink-500);font-size:var(--fs-sm)}.band-ink{background:var(--grad-ink);color:#fff;border-radius:var(--r-xl);padding:var(--s-8) var(--s-6);text-align:center}.band-ink h2{color:#fff}.band-ink p{color:#ffffffb8;max-width:60ch;margin-inline:auto}.band-ink .btn-ghost{background:#ffffff14;color:#fff;border-color:#ffffff3d}.exam-topbar{position:sticky;top:0;z-index:50;background:var(--surface-glass-strong);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}.exam-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);min-height:58px}.exam-bar{position:sticky;top:58px;z-index:30;display:flex;justify-content:space-between;align-items:center;gap:var(--s-3);margin-bottom:var(--s-4);padding:8px 12px;border:1px solid var(--line-2);border-radius:var(--r-lg);background:var(--glass-card);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);box-shadow:0 10px 24px -20px #17141c99}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.exam-bar{background:var(--surface-glass-strong)}}.exam-bar>:first-child{min-width:0}.exam-bar .timer{flex-shrink:0}.exam-meta{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:8px;font-size:15px}.exam-meta strong{flex:none;font-weight:600;white-space:nowrap}.exam-topic{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;color:var(--muted)}.exam-meta-sep{width:3px;height:3px;border-radius:50%;background:var(--line-strong)}.timer{font-variant-numeric:tabular-nums;font-weight:800;font-size:1.35rem;letter-spacing:-.02em}.timer-chip{display:inline-flex;align-items:center;flex:none;padding:6px 12px;border-radius:12px;line-height:1.2;background:var(--fill);color:var(--ink);font-size:17px;font-weight:500;letter-spacing:-.01em}.timer-chip.warning,.timer.warning{color:var(--amber-ink);background:var(--amber-soft)}.timer-chip.danger,.timer.danger{color:var(--red);background:var(--red-soft);animation:om-pulse 1s ease-out infinite}@keyframes om-pulse{0%{box-shadow:0 0 #b91c1c59}to{box-shadow:0 0 0 7px #b91c1c00}}@keyframes pulse{50%{opacity:.62}}.progress{height:6px;background:var(--line);border-radius:var(--r-full);overflow:hidden;margin-bottom:var(--s-6)}.progress-value{width:0;height:100%;background:var(--purple);border-radius:var(--r-full)}.question-head{display:flex;align-items:flex-start;gap:var(--s-3);margin-bottom:var(--s-5)}.q-number{flex:none;width:34px;height:34px;margin-top:2px;border-radius:11px;display:grid;place-items:center;background:var(--dark);color:#fff;font-size:15px;font-weight:500}.flag-btn{flex:none;display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 12px;border:1.5px solid var(--line-2);border-radius:12px;background:transparent;color:var(--muted);font:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:background .14s ease,border-color .14s ease,color .14s ease}.flag-btn:hover{border-color:var(--amber);color:var(--amber-ink)}.flag-btn.on{background:var(--amber-soft);border-color:var(--amber);color:var(--amber-ink)}.question-head .question-text{flex:1 1 auto;min-width:0;margin-bottom:0}.question-text{font-size:clamp(20px,2.4vw,25px);font-weight:600;line-height:1.35;letter-spacing:-.015em;margin:0 0 var(--s-5);text-wrap:pretty}.question-image{border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:var(--s-5);overflow:hidden;background:var(--surface-2)}.exam-figure{position:relative;margin:0 0 var(--s-5);border:1px solid var(--line-2);border-radius:var(--r-lg);overflow:hidden;background:#fff}.exam-figure img{display:block;width:100%;height:auto}.zoom-btn{position:absolute;bottom:8px;right:8px;display:inline-flex;align-items:center;gap:5px;min-height:28px;padding:4px 9px;border:1px solid rgba(255,255,255,.5);border-radius:var(--r-full);background:#ffffff29;backdrop-filter:blur(10px) saturate(150%);-webkit-backdrop-filter:blur(10px) saturate(150%);box-shadow:inset 0 1px #fff6,0 1px 4px #17141c24;color:var(--ink);font:inherit;font-size:11px;font-weight:600;line-height:1;text-shadow:0 1px 2px rgba(255,255,255,.7);cursor:pointer;transition:background .16s ease,border-color .16s ease}.zoom-btn:hover{background:#ffffff8c;border-color:#ffffffe6}@media (max-width: 720px){.zoom-btn{width:28px;padding:0;justify-content:center;gap:0}.zoom-label{display:none}}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.zoom-btn{background:#fffc}}.zoom-glass{width:10px;height:10px;border:2px solid currentColor;border-radius:50%;position:relative}.zoom-glass:after{content:"";position:absolute;right:-5px;bottom:-4px;width:7px;height:2px;background:currentColor;transform:rotate(45deg)}.zoom-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:grid;place-items:center;align-content:center;gap:var(--s-4);padding:var(--s-4);overflow:auto;overscroll-behavior:contain;background:#04020aeb;cursor:zoom-out}.zoom-layer img{background:#fff;max-width:none;width:auto;max-height:88vh;min-width:min(100%,720px);border-radius:var(--r-md);cursor:default}.zoom-close{padding:12px 26px;min-height:48px;border:1px solid var(--glass-line-strong);border-radius:var(--r-full);background:var(--glass-strong);color:var(--ink-900);font:inherit;font-weight:700;cursor:pointer}.option{display:flex;gap:var(--s-3);align-items:flex-start;width:100%;min-height:60px;text-align:left;padding:12px 16px;border:1.5px solid var(--line-2);border-radius:16px;background:var(--surface-2);box-shadow:var(--sh-2);font:inherit;cursor:pointer;margin-bottom:var(--s-2);transition:border-color .16s ease,background-color .16s ease}.option:hover{border-color:var(--brand-500);background:var(--brand-050)}.option.selected{border-color:var(--purple);background:var(--purple-tint);font-weight:600}.option .key{flex:none;width:30px;height:30px;border-radius:9px;border:1.5px solid var(--line-2);display:grid;place-items:center;font-size:14px;font-weight:500;color:var(--muted)}.option.selected .key{background:var(--purple);border-color:var(--purple);color:#fff}.option-text{flex:1;min-width:0}.option-tick{flex:none;align-self:center;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:var(--purple);color:#fff;font-size:13px;font-weight:800;line-height:1;animation:tick-pop .26s var(--ease-out) both}@keyframes tick-pop{0%{opacity:0;transform:scale(.4)}55%{opacity:1}to{opacity:1;transform:scale(1)}}.option.correct .option-tick{background:var(--ok);color:var(--surface)}.option.wrong 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var(--glass-line);border-radius:var(--r-full);background:var(--glass);color:var(--ink-500);font-weight:500;text-decoration:none}.learn-locked:hover{border-color:var(--brand-500);color:var(--ink-900)}.reveal-cta{margin-top:var(--s-2);font-size:var(--fs-sm);padding:8px 16px}.video-row{margin-top:var(--s-3)}.video-row>summary{display:flex;align-items:center;gap:var(--s-3);padding:10px 14px;border:1.5px solid var(--glass-line);border-radius:var(--r-md);background:var(--glass);cursor:pointer;font-size:var(--fs-sm);font-weight:600;list-style:none}.video-row>summary::-webkit-details-marker{display:none}.video-row>summary:hover{border-color:var(--brand-500)}a.video-row.locked{display:flex;align-items:center;gap:var(--s-3);margin-top:var(--s-3);padding:10px 14px;border:1.5px solid var(--line);border-radius:var(--r-md);background:var(--surface);color:var(--ink-500);font-size:var(--fs-sm);font-weight:600;text-decoration:none}a.video-row.locked:hover{border-color:var(--brand-500);color:var(--ink-900)}a.video-row.locked .play{background:var(--ink-400)}a.video-row.locked .lock-glyph{margin-left:auto}.video-count{display:flex;align-items:center;gap:var(--s-2);margin:0 0 var(--s-4);color:var(--brand-ink);font-size:var(--fs-sm);font-weight:600}.play.sm{width:20px;height:20px}.play.sm:after{border-left-width:6px;border-top-width:4px;border-bottom-width:4px}.play{flex:none;width:30px;height:30px;border-radius:50%;background:var(--brand-600);position:relative}.play:after{content:"";position:absolute;top:50%;left:55%;transform:translate(-50%,-50%);border-left:9px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent}.study-progress{margin:var(--s-4) 0 0;padding:var(--s-3) var(--s-4);border:1px solid var(--ok-line);border-radius:var(--r-md);background:var(--ok-soft);font-size:var(--fs-sm)}.result-tools{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s-3);margin-bottom:var(--s-3)}.chip{padding:6px 14px;border-radius:var(--r-full);border:1.5px solid var(--glass-line);background:var(--glass);color:var(--ink-500);font:inherit;font-size:var(--fs-xs);font-weight:700;cursor:pointer}.chip.on{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-text)}.chip:disabled{opacity:.5;cursor:default}.result-jump{display:flex;flex-wrap:wrap;gap:6px}.result-jump .dot{min-width:28px;height:28px;padding-inline:6px;font-size:var(--fs-xs);display:inline-flex;align-items:center;justify-content:center;gap:3px;text-decoration:none;border-radius:var(--r-sm);border:1.5px solid var(--glass-line);color:var(--ink-500)}.result-jump .dot.ok:after{content:"✓";font-size:11px}.result-jump .dot.bad:after{content:"✕";font-size:11px}.result-jump .dot.ok{border-color:var(--ok-line);color:var(--ok)}.result-jump .dot.bad{border-color:var(--bad);color:var(--bad);background:var(--bad-soft)}@media (max-width: 620px){.mastery-row{grid-template-columns:1fr auto;row-gap:4px}.mastery-track{grid-column:1 / -1;order:3}.mastery-count{display:none}}.reveal{margin-top:var(--s-4)}.reveal-verdict{margin:0;font-weight:700;color:var(--bad)}.reveal-verdict.ok{color:var(--ok)}.dot{width:38px;height:38px;border-radius:var(--r-sm);border:1.5px solid var(--line);background:var(--surface);color:var(--ink-500);font:inherit;font-size:var(--fs-sm);font-weight:600;cursor:pointer;position:relative;transition:transform .1s ease,border-color .14s ease}.dot:hover{border-color:var(--brand-500);transform:translateY(-1px)}.qmap{margin-top:var(--s-5);border:1px solid var(--line-2);border-radius:16px;background:var(--surface-2)}.qmap-summary{display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);min-height:52px;padding:8px 16px;list-style:none;cursor:pointer;font-size:15px;font-weight:600}.qmap-summary::-webkit-details-marker{display:none}.qmap-summary:before{content:"";flex:none;order:3;width:8px;height:8px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(45deg);transition:transform .16s ease}.qmap[open] .qmap-summary:before{transform:rotate(-135deg)}.qmap-counts{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:4px 12px;margin-left:auto;font-size:13px;font-weight:500;color:var(--muted)}.qmap-flagged{color:var(--amber-ink)}.qmap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:8px;padding:4px 16px 12px}.qmap-cell{position:relative;min-height:44px;border:1.5px solid var(--line-2);border-radius:10px;background:var(--surface-2);color:var(--muted);font:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:border-color .14s ease,background .14s ease}.qmap-cell:hover{border-color:var(--purple)}.qmap-cell.answered{background:var(--purple);border-color:var(--purple);color:#fff}.qmap-cell.current{border-color:var(--dark);box-shadow:inset 0 0 0 1px var(--dark)}.qmap-cell.flagged:after{content:"";position:absolute;top:4px;right:4px;width:7px;height:7px;border-radius:50%;background:var(--amber)}.nav-legend{display:flex;gap:var(--s-4);flex-wrap:wrap;padding:0 16px 14px;font-size:12px;color:var(--muted)}.nav-legend i{width:12px;height:12px;border-radius:4px;display:inline-block;margin-right:6px;vertical-align:-1px;border:1.5px solid var(--line-2)}.nav-legend i.legend-answered{background:var(--purple);border-color:var(--purple)}.nav-legend i.legend-current{border-color:var(--dark)}.nav-legend i.legend-open{background:var(--surface-2)}.nav-legend i.legend-flag{background:var(--amber);border-color:var(--amber)}.exam-actions{display:flex;gap:var(--s-3);align-items:center;justify-content:space-between;margin-top:var(--s-5)}.exam-actions 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var(--line)}.result-row:last-child{border-bottom:none}.mark{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;color:var(--surface);font-size:var(--fs-xs);font-weight:800}.mark.ok{background:var(--ok)}.mark.bad{background:var(--bad)}.mark.open{background:var(--fill);color:var(--muted)}.deck-summary-title{margin:4px 0 16px;font-size:28px;letter-spacing:-.02em}.deck-summary-counts{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px}.deck-summary-count{display:flex;flex-direction:column;gap:2px;padding:16px;border-radius:16px;background:var(--surface-2);box-shadow:var(--sh-2)}.deck-summary-count strong{font-size:32px;line-height:1.1}.deck-summary-count span{font-size:13px;color:var(--muted)}.deck-summary-count.ok strong{color:var(--ok)}.deck-summary-count.bad strong{color:var(--bad)}.deck-summary-lead{margin:16px 0 0;font-size:14px}.deck-summary-list{margin-top:20px;padding:4px 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var(--line)}.meter:last-child{border-bottom:none}.meter-name{font-weight:600;font-size:var(--fs-sm)}.meter-score{font-variant-numeric:tabular-nums;font-weight:700;font-size:var(--fs-sm);color:var(--ink-500)}.meter-bar{grid-column:1 / -1;height:8px;border-radius:var(--r-full);background:var(--surface-3);overflow:hidden}.meter-fill{display:block;width:0;height:100%;border-radius:var(--r-full);background:var(--ok);transition:width .72s cubic-bezier(.2,.9,.25,1);transition-delay:calc(var(--row, 0) * 70ms)}.meter-fill.mid{background:var(--amber)}.meter-fill.low{background:var(--bad)}.seg{display:inline-flex;padding:4px;gap:3px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-full)}.seg button{border:none;background:transparent;font:inherit;font-size:var(--fs-sm);font-weight:600;color:var(--ink-500);padding:7px 16px;border-radius:var(--r-full);cursor:pointer}.seg button.on{background:var(--surface);color:var(--ink-900);box-shadow:var(--sh-1)}.locked{position:relative;border:1.5px dashed var(--line-strong);border-radius:var(--r-lg);padding:var(--s-6);background:var(--surface-2);text-align:center}.locked h3{margin-bottom:var(--s-1)}.note{margin:var(--s-4) 0 var(--s-3);font-size:var(--fs-sm);color:var(--ink-500);font-style:italic}.exam-page.no-bar{padding-top:var(--s-5)}.gift-note{margin:0 0 var(--s-4);padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);background:var(--brand-050);color:var(--brand-text);font-size:var(--fs-sm);font-weight:600;text-align:center}.law-ref{margin:var(--s-2) 0 0;font-size:var(--fs-xs);color:var(--ink-500)}.law-ref-no{font-weight:700;color:var(--brand-text)}.law-ref q{display:block;margin-top:2px;font-style:italic;quotes:"«" "»"}.video-box{max-width:560px;margin-top:var(--s-3)}.video-frame{position:relative;aspect-ratio:16 / 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var(--brand-100);border-radius:var(--r-xl);background:var(--brand-050)}.weak-spots-title{margin:0;font-size:1.15rem}.weak-spots-lead{margin:var(--s-2) 0 var(--s-4);font-size:var(--fs-sm)}.weak-list{list-style:none;margin:0;padding:0;display:grid;gap:var(--s-3)}.weak-list li{display:flex;gap:var(--s-3);align-items:baseline}.weak-count{flex:none;min-width:2.6em;padding:2px 8px;border-radius:999px;background:var(--surface-2);border:1px solid var(--brand-100);color:var(--brand-text);font-size:var(--fs-sm);font-weight:600;font-variant-numeric:tabular-nums;text-align:center}.weak-text{color:var(--ink-700)}.weak-ai{margin:var(--s-4) 0 0;font-size:var(--fs-sm)}.weak-actions{display:flex;flex-wrap:wrap;gap:var(--s-3);margin-top:var(--s-4)}.weak-spots.empty .btn{margin-top:var(--s-3)}.sheet-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;pointer-events:none}.sheet-layer.open{pointer-events:auto}.sheet-scrim{position:absolute;top:0;right:0;bottom:0;left:0;background:#16111f57;opacity:0}.sheet{position:absolute;left:0;right:0;bottom:0;max-width:520px;margin:0 auto;max-height:min(88vh,calc(100vh - 24px));display:flex;flex-direction:column;border-radius:var(--r-2xl) var(--r-2xl) 0 0;background:var(--glass-panel);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--sh-3);transform:translateY(calc(100% + 64px))}.sheet-handle{flex:none;padding:var(--s-3) 0 var(--s-2);display:grid;place-items:center;touch-action:none;cursor:grab}.sheet-handle:active{cursor:grabbing}.sheet-handle span{width:2.5rem;height:.3125rem;border-radius:var(--r-full);background:var(--line-strong)}.sheet-body{overflow-y:auto;overscroll-behavior:contain;padding:0 clamp(1rem,4vw,1.5rem) calc(var(--s-6) + 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p{color:var(--ink-500);margin:var(--s-3) 0 0;font-size:var(--fs-sm)}.alert{padding:var(--s-4);border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface-2);font-size:var(--fs-sm)}.alert.error{border-color:var(--bad-line);background:var(--bad-soft);color:var(--bad)}.alert.warn{border-color:var(--warn-line);background:var(--warn-soft);color:var(--warn)}.stat{border-radius:16px;padding:20px;background:var(--surface-2);box-shadow:var(--sh-2)}.stat .value{font-size:32px;font-weight:700;letter-spacing:-.02em;line-height:1.1}.stat .label{margin-top:4px;color:var(--muted);font-size:14px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:var(--fs-sm)}th,td{text-align:left;padding:13px 10px;border-bottom:1px solid var(--line)}th{color:var(--ink-500);font-weight:700;font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.06em}.site-footer{margin-top:auto;border-top:1px solid var(--line-2);padding:var(--s-6) 0;background:var(--surface-2);color:var(--muted);font-size:13px}.footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:var(--s-5);font-size:14px;line-height:2}.footer-links a{color:var(--ink-2);text-decoration:none}.footer-links a:hover{color:var(--brand-text);text-decoration:underline}.footer-text{margin:0;max-width:62ch;line-height:1.6}.payment-marks{display:flex;flex-wrap:wrap;gap:var(--s-2);margin-bottom:var(--s-5)}.payment-mark{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:5px;font-size:.72rem;font-weight:800;letter-spacing:.04em;font-style:italic}.payment-mark-mastercard,.payment-mark-arca{font-style:normal}.payment-mark-circles{display:inline-flex}.payment-mark-circles i{width:13px;height:13px;border-radius:50%;background:#eb001b}.payment-mark-circles 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play-breathe{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@media (prefers-reduced-motion: reduce){.video-art-play .play{animation:none}}.video-art-chip{position:absolute;left:14px;bottom:12px;padding:4px 10px;border-radius:8px;background:#17141cb3;color:#fff;font-size:12px}.landing-plans{padding-block:clamp(3rem,6vw,4.5rem)}.landing-plans h2,.landing-faq h2{margin:0 0 8px;font-size:clamp(28px,3.4vw,40px);letter-spacing:-.025em}.plans-perks{margin:4px 0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:8px 24px}.plan-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:12px}.plan-tile{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:22px 20px 18px;border:1.5px solid var(--line-2);border-radius:18px;background:var(--surface-2);box-shadow:var(--sh-2);color:var(--ink);font:inherit;text-align:left;cursor:pointer;transition:transform .35s var(--ease-out),border-color .2s,box-shadow .35s var(--ease-out)}.plan-tile:hover{transform:translateY(-3px);border-color:var(--purple);box-shadow:var(--shadow-card)}.plan-tile.featured{border-color:var(--purple);background:linear-gradient(180deg,var(--purple-tint),transparent 60%),var(--surface-2)}.plan-tile-tag{position:absolute;top:-10px;left:16px;padding:3px 9px;border-radius:999px;background:var(--purple);color:#fff;font-size:11px;font-weight:700}.plan-tile-term{font-size:15px;font-weight:600;color:var(--muted)}.plan-tile-price{font-size:30px;font-weight:700;letter-spacing:-.03em;line-height:1.1}.plan-tile-rate{font-size:13px;color:var(--muted)}.plan-tile-cta{margin-top:10px;font-size:14px;font-weight:600;color:var(--purple-2)}.plans-note{margin-top:16px}.landing-faq{padding-block:clamp(2.5rem,5vw,4rem)}.faq-wrap{max-width:760px}.faq-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}.faq{border-radius:16px;background:var(--surface-2);box-shadow:var(--sh-2);padding:0 20px}.faq summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0;list-style:none;cursor:pointer;font-size:16px;font-weight:600}.faq summary::-webkit-details-marker{display:none}.faq-chev{flex:none;width:10px;height:10px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .25s var(--ease-out)}.faq[open] .faq-chev{transform:rotate(-135deg)}.faq p{margin:0;padding:0 0 18px;font-size:15px;line-height:1.6;color:var(--ink-3)}.proof-line{display:inline-flex;align-items:center;gap:8px;margin:12px 0 0;font-size:14px;color:var(--ink-2)}.proof-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px var(--green-soft)}.deck-card{touch-action:pan-y}.deck-card.is-dragging{will-change:transform;cursor:grabbing;-webkit-user-select:none;user-select:none}.deck-card.is-dragging *{pointer-events:none}.swipe-hint{display:none;margin:0 0 10px;font-size:13px;text-align:center}@media (hover: none) and (pointer: coarse){.swipe-hint{display:block}}.onb{display:flex;flex-direction:column;gap:18px}.onb-dots{display:flex;justify-content:center;gap:6px}.onb-dots span{width:8px;height:8px;border-radius:50%;background:var(--fill-strong);transition:width .3s var(--ease-out),background-color .3s}.onb-dots span.on{width:22px;border-radius:999px;background:var(--purple)}.onb-slide{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;min-height:220px}.onb-icon{display:grid;place-items:center;width:72px;height:72px;border-radius:22px;background:var(--purple-soft);color:var(--purple-2);margin-bottom:6px}.onb-road{width:min(100%,300px);border-radius:16px;margin-bottom:6px}.onb-title{margin:0;font-size:24px;letter-spacing:-.02em;line-height:1.15}.onb-body{margin:0;max-width:34ch;font-size:15px;line-height:1.55}.onb-actions{display:flex;justify-content:space-between;gap:10px}.onb-actions .btn:last-child{flex:1 1 auto}:root[data-theme=dark]:not([data-admin]){color-scheme:dark;--ink-900: #f1eef8;--ink-700: #d6d0e6;--ink-500: #aca5c0;--ink-400: #9c95b2;--ink-300: #6f6887;--line: #2a2536;--line-soft: #262131;--line-strong: #3a3449;--surface: #121017;--surface-2: #1b1822;--surface-3: #221e2c;--surface-glass: rgba(27, 24, 34, .82);--surface-glass-strong: rgba(27, 24, 34, .95);--surface-fade: rgba(18, 16, 23, 0);--glass: rgba(27, 24, 34, .72);--glass-strong: rgba(27, 24, 34, .86);--glass-panel: rgba(27, 24, 34, .99);--glass-line: #2a2536;--glass-line-strong: #3a3449;--glass-sheen: inset 0 1px 0 rgba(255, 255, 255, .06);--brand-050: #251c3b;--brand-100: #2b2146;--brand-text: #c4b5fd;--brand-ink: #ddd6fe;--ok: #4ade80;--ok-soft: rgba(74, 222, 128, .12);--ok-line: rgba(74, 222, 128, .35);--warn: #fbbf24;--warn-soft: rgba(251, 191, 36, .12);--warn-line: rgba(251, 191, 36, .35);--amber: #fbbf24;--bad: #f87171;--bad-soft: rgba(248, 113, 113, .12);--bad-line: rgba(248, 113, 113, .35);--sh-1: 0 1px 2px rgba(0, 0, 0, .3);--sh-2: 0 1px 3px rgba(0, 0, 0, .35);--sh-3: 0 20px 52px rgba(0, 0, 0, .5);--ink: #f1eef8;--ink-2: #cfc9dd;--ink-3: #bdb6cd;--muted: #9d96b0;--muted-2: #5f5873;--bg: #121017;--line-2: rgba(255, 255, 255, .12);--fill: rgba(255, 255, 255, .06);--fill-strong: rgba(255, 255, 255, .1);--purple-2: #c4b5fd;--purple-tint: #221b33;--green-soft: rgba(74, 222, 128, .14);--amber-ink: #fbbf24;--amber-soft: rgba(251, 191, 36, .12);--red-soft: rgba(248, 113, 113, .14);--dark: #26212f;--dark-text-2: #c9c4d2;--glass-card: rgba(27, 24, 34, .78);--shadow-card: 0 30px 60px -32px rgba(0, 0, 0, .8), 0 2px 6px rgba(0, 0, 0, .3);--road-sky-1: #1e1834;--road-sky-2: #2c2545;--road-sun: #6d5bc7;--road-hill-far: #2b2446;--road-hill-near: #211b38;--road-ground-1: #2a2440;--road-ground-2: #1a1626;--road-asphalt-1: #4a4460;--road-asphalt-2: #221d2c;--road-fog: #2c2545;--road-car-1: #8b5cf6;--road-car-2: #6532d1;--road-car-3: #b8a2fb;--road-car-4: #4c1d95;--road-glass-1: #6f5fb0;--road-glass-2: #110e1a;--road-tail: #ff3d52;--road-tyre: #0f0d14;--road-plate: #e6e2f2;--road-shadow: rgba(0, 0, 0, .5);--road-wash: #1e1834;--map-ground: #221e2c;--map-road: #3c3650}.admin-root,[data-admin]{color-scheme:light}[data-reveal]:focus-within{opacity:1;transform:none;transition:none}.dash-status .tag{min-height:28px;display:inline-flex;align-items:center}.plan-row-tag.now{color:var(--green-ink)}@media (max-width: 720px){html{scroll-padding-bottom:calc(90px + env(safe-area-inset-bottom,0px))}}:root[data-theme=dark]:not([data-admin]){--green-ink: #4ade80}.guest-settings{margin-top:20px}.fold-title{margin:0}.fold-toggle{display:flex;width:100%;min-height:44px;align-items:center;justify-content:space-between;gap:12px;padding:0;border:0;background:none;font:inherit;color:inherit;text-align:left;cursor:pointer}.fold-chev{flex:none;color:var(--ink-400);transition:transform .28s ease}.fold-toggle[aria-expanded=true] .fold-chev{transform:rotate(180deg)}.fold{display:grid;grid-template-rows:0fr;transition:grid-template-rows .34s cubic-bezier(.2,.7,.2,1)}.fold.open{grid-template-rows:1fr}.fold-inner{min-height:0;overflow:hidden}.profile-settings .fold-inner{padding-inline:2px;margin-inline:-2px}@media (prefers-reduced-motion: reduce){.fold,.fold-chev{transition:none}}:root{--road-sky-1: #ddd3fb;--road-sky-2: #fbf9ff;--road-sun: #fff4dc;--road-hill-far: #d7cdf4;--road-hill-near: #c3b6ea;--road-ground-1: #d9d1f2;--road-ground-2: #bfb3e4;--road-asphalt-1: #7c7594;--road-asphalt-2: #3b3549;--road-fog: #f4f0ff;--road-car-1: #7c3aed;--road-car-2: #5b21b6;--road-car-3: #ab8ff8;--road-car-4: #4c1d95;--road-glass-1: #cdc1f5;--road-glass-2: #2a2340;--road-tail: #ff3d52;--road-tyre: #1f1b27;--road-plate: #f3f0fa;--road-shadow: rgba(23, 20, 28, .3);--road-wash: #f4f0ff;--map-ground: #e6e1f5;--map-road: #4f485f}.road{display:block;width:100%;height:auto}.road-scene,.road-slice,.road-hill,.road-sign,.road-car,.map-cover{will-change:transform}.road-hill{transform-origin:150px 62px}.road-hill-near{animation:road-drift-near 11s ease-in-out infinite alternate}@keyframes road-drift-near{to{transform:scale(1.045)}}.road-slice{transform-origin:150px 62px;transform:scale(var(--s));animation:road-stream 3.4s linear infinite;animation-delay:calc(var(--i) * -3.4s / 7)}@keyframes road-stream{0%{transform:scale(.125)}20%{transform:scale(.152)}40%{transform:scale(.195)}55%{transform:scale(.248)}70%{transform:scale(.338)}80%{transform:scale(.446)}88%{transform:scale(.6)}94%{transform:scale(.81)}97%{transform:scale(.98)}to{transform:scale(1.25)}}.road-car{animation:road-idle 2.6s ease-in-out infinite alternate}@keyframes road-idle{0%{transform:translateY(0)}to{transform:translateY(-.8px)}}.road-car-brake{opacity:.4;transition:opacity .5s var(--ease-out)}.road-sign{transform-origin:150px 62px}.road-dim{opacity:0;transition:opacity .6s var(--ease-out)}.road.is-off .road-slice,.road.is-off .road-hill,.road.is-off .road-car{animation-play-state:paused}.road-spot{opacity:0;transition:opacity .4s var(--ease-out)}.road-spot circle:last-child{stroke-dasharray:100;stroke-dashoffset:0}.road-map{opacity:0;transform-origin:176px 80px;transition:opacity .3s ease,transform 1s var(--ease-out)}.demo.beat-2 .road-map{transition:opacity .3s ease .26s,transform 1s var(--ease-out) .26s}.map-zone{--map-zone: #fb7185}.map-cover{transform-origin:222px 89px}.map-arrow{opacity:0}@media (prefers-reduced-motion: reduce){.road-hill,.road-slice,.road-car{animation:none}}.mock-bar{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--line-2);border-radius:12px;background:var(--surface-2);box-shadow:0 8px 20px -18px #17141c99;font-size:14px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;margin-bottom:12px}.mock-sep{width:1px;height:14px;background:var(--line-2)}.mock-topic{flex:1 1 auto;height:8px;max-width:96px;border-radius:999px;background:var(--surface-3)}.mock-clock{margin-left:auto;padding:4px 10px;border-radius:999px;background:var(--surface-3);font-size:13px;font-weight:500;color:var(--ink-700)}.mock-track{height:4px;border-radius:var(--r-full);background:var(--surface-3);overflow:hidden;margin-bottom:14px}.mock-track span{display:block;width:35%;height:100%;border-radius:var(--r-full);background:var(--grad-brand);transition:width .45s cubic-bezier(.2,.9,.25,1)}.mock-line{height:10px;border-radius:var(--r-full);background:var(--surface-3);margin-bottom:9px}.mock-opts{display:grid;gap:var(--s-2);margin-top:var(--s-4)}.mock-opt{position:relative;display:flex;align-items:center;gap:var(--s-3);width:100%;min-height:48px;border:1.5px solid var(--line-2);border-radius:16px;background:var(--surface-2);padding:0 .8125rem;font:inherit;cursor:pointer;transition:border-color .35s var(--ease-out),background-color .35s var(--ease-out),box-shadow .45s var(--ease-out)}.mock-opt.is-on{border-color:var(--brand-600);background:var(--brand-050)}.mock-key{flex:none;width:28px;height:28px;border-radius:8px;border:1.5px solid var(--line-2);display:grid;place-items:center;color:var(--muted);font-size:13px;font-weight:500;transition:background-color .35s var(--ease-out),border-color .35s var(--ease-out),color .35s var(--ease-out)}.mock-opt.is-on .mock-key{background:var(--brand-600);border-color:var(--brand-600);color:#fff}.mock-opt-line{flex:1;height:9px;border-radius:var(--r-full);background:var(--surface-3)}.mock-opt.is-wrong{border-color:var(--red);background:var(--red-soft)}.mock-opt.is-wrong .mock-key{background:var(--red);border-color:var(--red);color:#fff}.demo.beat-1 .mock-opt.is-wrong{animation:mock-shake .45s var(--ease-out) .05s}@keyframes mock-shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-2px)}80%{transform:translate(2px)}}.mock-opt.is-right{border-color:var(--ok);background:var(--green-soft);box-shadow:0 0 0 3px #15803d24,0 8px 22px -10px #15803d8c}.mock-opt.is-right .mock-key{background:var(--ok);border-color:var(--ok);color:#fff}.mock-mark{flex:none;width:20px;height:20px}.mock-mark path{fill:none;stroke:#fff;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:100;stroke-dashoffset:0;animation:mock-draw .42s var(--ease-out) both}.mock-tick circle{fill:var(--ok)}.mock-tick path{animation-delay:.22s}.mock-cross circle{fill:var(--red)}@keyframes mock-draw{0%{stroke-dashoffset:100}to{stroke-dashoffset:0}}.demo{display:flex;flex-direction:column;gap:10px;align-items:center}.demo-phone{position:relative;width:min(100%,360px);border-radius:26px;border:1px solid var(--line);background:var(--surface-2);box-shadow:var(--shadow-card);padding:18px 18px 16px;overflow:hidden}.demo-road{position:relative;margin:4px 0 14px;border-radius:14px;overflow:hidden;box-shadow:inset 0 0 0 1px #17141c0f;isolation:isolate}.demo.beat-0 .road-sign{animation:road-sign-in 2.4s var(--ease-out) both}@keyframes road-sign-in{0%{transform:scale(.38);opacity:.45}to{transform:scale(1);opacity:1}}.demo.beat-1 .road-slice,.demo.beat-1 .road-hill,.demo.beat-1 .road-car,.demo.beat-2 .road-slice,.demo.beat-2 .road-hill,.demo.beat-2 .road-car{animation-play-state:paused}.demo.beat-1 .road-car-brake{opacity:1}.demo.beat-1 .road-dim{opacity:.55}.demo.beat-1 .road-spot{opacity:1}.demo.beat-1 .road-spot circle:last-child{animation:road-spot-draw .7s var(--ease-out) .25s both}@keyframes road-spot-draw{0%{stroke-dashoffset:100}to{stroke-dashoffset:0}}.road-scene{transform-origin:283px 92px;transition:transform 1.1s var(--ease-out),opacity .3s ease}.demo.beat-2 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