:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--ink-950:#060b16;--ink-900:#0a1222;--ink-800:#101b33;--ink-700:#1a2a4d;--ink-600:#2a3d6b;--signal-400:#ffd25e;--signal-500:#ffb627;--signal-600:#ff9f1c;--mint-400:#35e0b5;--sky-400:#8db4ff;--royal-600:#2c4fd9;--royal-700:#1747d6;--coral-400:#ff8a66;--bg:#f3f5fa;--paper:var(--bg);--surface:#fff;--surface-2:#e9edf6;--surface-glass:#ffffffb8;--text:#0b1424;--text-2:#475472;--rule:#d6dcea;--rule-strong:#b3bdd4;--accent:var(--royal-700);--brand:var(--ink-900);--signal:var(--signal-500);--signal-ink:#2a1d00;--btn-bg:var(--signal-500);--btn-ink:#1a1100;--correct:#1747d6;--correct-bg:#e5ecfd;--mistake:#b3400f;--mistake-bg:#fdece4;--ok:#17663f;--ok-bg:#def3e8;--focus:#1747d6;--art-grass:#cfe3c4;--art-road:#4b5668;--art-line:#f3f5fa;--art-island:#9bbf86;--shadow-1:0 1px 2px #0b14240f, 0 2px 8px #0b14240d;--shadow-2:0 1px 2px #0b14240f, 0 8px 24px #0b142417, 0 24px 56px -12px #0b142424;--shadow-3:0 2px 4px #0b142414, 0 16px 40px #0b142424, 0 40px 90px -20px #1747d640;--shadow:var(--shadow-2);--ring-glow:0 0 0 1px #ffffff0f inset;--grad-signal:linear-gradient(180deg, #ffd25e 0%, #ffb627 55%, #ff9f1c 100%);--grad-night:radial-gradient(1200px 600px at 78% -10%, #2c4fd973, transparent 60%), radial-gradient(900px 500px at 8% 110%, #35e0b524, transparent 60%), linear-gradient(180deg, #0b1530 0%, #060b16 100%);--grad-text:linear-gradient(100deg, #ffd25e 0%, #ffb627 40%, #ff8a66 100%);--font-display:"SF Pro Display", "Avenir Next", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", sans-serif;--font:"SF Pro Text", "Avenir Next", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", sans-serif;--text-xs:.8125rem;--text-sm:.9375rem;--text-md:1.0625rem;--text-lg:clamp(1.15rem, 2.2vw, 1.375rem);--text-h3:1.25rem;--text-h2:clamp(1.9rem, 4.6vw, 3rem);--text-h1:clamp(2.4rem, 7.4vw, 4.9rem);--s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:24px;--s-6:32px;--s-7:48px;--s-8:72px;--s-9:112px;--radius-sm:10px;--radius:18px;--radius-lg:28px;--wrap:1180px;--ease:cubic-bezier(.2, .7, .2, 1);--t-fast:.16s;--t-med:.32s;--t-slow:.7s}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#070d1a;--surface:#0f1a31;--surface-2:#14213d;--surface-glass:#0f1a31b8;--text:#eaf0fb;--text-2:#a6b4cf;--rule:#22335a;--rule-strong:#35497a;--accent:var(--sky-400);--brand:var(--signal-500);--correct:#8db4ff;--correct-bg:#13264d;--mistake:#ff9d78;--mistake-bg:#3a2118;--ok:#6fe0a6;--ok-bg:#0f3022;--focus:#a9c8ff;--art-grass:#1d2c26;--art-road:#394356;--art-line:#c6d0e2;--art-island:#2f4a33;--shadow-1:0 1px 2px #0006, 0 2px 8px #0000004d;--shadow-2:0 1px 2px #0006, 0 8px 24px #0006, 0 24px 56px -12px #00000080;--shadow-3:0 2px 4px #00000080, 0 16px 40px #00000080, 0 40px 90px -20px #2c4fd973}}.on-dark{--bg:#070d1a;--surface:#101b33;--surface-2:#16264a;--surface-glass:#101b339e;--text:#f1f5fd;--text-2:#b0bdd6;--rule:#ffffff24;--rule-strong:#ffffff47;--accent:var(--sky-400);--correct:#8db4ff;--correct-bg:#13264d;--mistake:#ff9d78;--mistake-bg:#3a2118;--ok:#6fe0a6;--ok-bg:#0f3022;--focus:#a9c8ff;--shadow:var(--shadow-3);color:var(--text)}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}body{background:var(--bg);color:var(--text);font:400 var(--text-md)/1.6 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;overflow-x:clip}img,svg,canvas{max-width:100%;display:block}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.025em;text-wrap:balance;margin:0 0 .5em;font-weight:800;line-height:1.08}h1{font-size:var(--text-h1);letter-spacing:-.04em}h2{font-size:var(--text-h2);letter-spacing:-.035em}h3{font-size:var(--text-h3);letter-spacing:-.015em;line-height:1.2}p{margin:0 0 1em}a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}code{background:var(--surface-2);border-radius:5px;padding:.1em .35em;font-size:.9em}ul,ol{margin:0 0 1em;padding-left:1.2em}:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:6px}main:focus{outline:none}::selection{background:var(--signal-500);color:#1a1100}.wrap{width:min(var(--wrap), 100% - 40px);margin-inline:auto}.narrow{width:min(720px,100% - 40px)}.center{text-align:center}.muted{color:var(--text-2)}.small{font-size:var(--text-sm)}.lead{font-size:var(--text-lg);color:var(--text-2);max-width:36em;line-height:1.5}.eyebrow{font-size:var(--text-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--text-2);align-items:center;gap:10px;margin-bottom:1.1em;font-weight:700;display:inline-flex}.eyebrow:before{content:"";background:var(--grad-signal);border-radius:2px;width:22px;height:2px}.skip{background:var(--signal-500);color:#1a1100;z-index:60;border-radius:10px;padding:10px 16px;font-weight:700;position:absolute;top:-80px;left:8px}.skip:focus{top:8px}.btn{background:var(--grad-signal);min-height:52px;color:var(--btn-ink);font:700 1rem/1 var(--font);cursor:pointer;transition:transform var(--t-fast) var(--ease), box-shadow var(--t-med) var(--ease), filter var(--t-fast);border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 26px;text-decoration:none;display:inline-flex;position:relative;box-shadow:inset 0 1px #ffffff80,0 6px 18px -4px #ff9f1c8c}.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:inset 0 1px #ffffff80,0 12px 28px -6px #ff9f1ca6}.btn:active{transform:translateY(0)}.btn-quiet{color:var(--text);box-shadow:inset 0 0 0 1.5px var(--rule-strong);background:0 0}.btn-quiet:hover{background:color-mix(in srgb, var(--text) 7%, transparent);box-shadow:inset 0 0 0 1.5px var(--text-2)}.btn-small{white-space:nowrap;min-height:42px;padding:0 18px;font-size:.95rem}.btn:disabled{cursor:default;transform:none}.cta{flex-wrap:wrap;gap:14px;margin:2em 0 1em;display:flex}.arrow:after{content:"→";transition:transform var(--t-fast) var(--ease)}.arrow:hover:after{transform:translate(3px)}.site{flex-direction:column;min-height:100vh;display:flex}.site>main{flex:1}.site-head{z-index:30;-webkit-backdrop-filter:blur(16px)saturate(1.4);backdrop-filter:blur(16px)saturate(1.4);background:#070d1ae6;border-bottom:1px solid #ffffff14;position:sticky;top:0}.head-row{justify-content:space-between;align-items:center;gap:12px;min-height:68px;display:flex}.logo{font-family:var(--font-display);letter-spacing:-.03em;color:var(--text);align-items:center;gap:11px;font-size:1.28rem;font-weight:800;display:inline-flex}.logo-link{border-radius:10px;text-decoration:none}.logo svg{filter:drop-shadow(0 4px 10px #2c4fd980);flex-shrink:0}.nav{align-items:center;gap:4px;display:flex}.nav-link{color:var(--text);opacity:.86;transition:background var(--t-fast), opacity var(--t-fast);border-radius:999px;padding:10px 14px;font-size:.97rem;font-weight:600;text-decoration:none;position:relative}.menu{display:none;position:relative}.menu summary{cursor:pointer;list-style:none}.menu summary::-webkit-details-marker{display:none}.menu-list{z-index:30;background:var(--ink-900,#101a38);border:1px solid #ffffff29;border-radius:14px;flex-direction:column;min-width:200px;padding:8px;display:flex;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 16px 40px #0006}.menu-list a{color:#fff;border-radius:10px;padding:12px 14px;font-weight:600;text-decoration:none}.menu-list a:hover{background:#ffffff1a}.rcard-body.no-tile{padding-top:22px}@media (max-width:440px){.nav{display:none}.menu{display:block}.logo-name{font-size:1.1rem}}.nav-link:hover,.nav-link.active{opacity:1;background:#ffffff17}.site-head .btn-small{margin-left:8px}.site-foot{margin-top:var(--s-9);background:var(--grad-night);padding:72px 0 56px;position:relative;overflow:hidden}.site-foot:before{content:"";background:linear-gradient(90deg,#0000,#ffb62799,#0000);height:1px;position:absolute;top:0;left:0;right:0}.foot-grid{grid-template-columns:1.3fr .8fr 1.4fr;gap:40px;display:grid}.foot-links{grid-template-columns:1fr 1fr;align-content:start;gap:10px 20px;display:grid}.foot-links a{color:var(--text);opacity:.88;font-weight:500;text-decoration:none}.foot-links a:hover{opacity:1;text-decoration:underline}.foot-tag{font-family:var(--font-display);letter-spacing:-.02em;margin:.9em 0 1em;font-size:1.15rem;font-weight:700}.credits p{margin:0 0 .7em}.credits a{color:var(--sky-400)}.soon{color:var(--text-2)}.hero{isolation:isolate;background:var(--grad-night);min-height:min(92vh,860px);color:var(--text);align-items:center;display:flex;position:relative;overflow:hidden}.hero-stage{z-index:-2;position:absolute;inset:0}.hero-stage .run{height:100%;margin:0;position:relative}.hero-stage .run-stage{aspect-ratio:auto;background:0 0;border-radius:0;max-height:none;position:absolute;inset:0}.hero-stage .run-poster{background:var(--ink-900)}.hero-stage .run-poster .art{opacity:.55}.hero-stage .run-status{display:none}.hero-stage .run-bar{right:max(20px, calc((100% - var(--wrap)) / 2));z-index:3;padding:0;position:absolute;bottom:22px}.hero-stage .run-scrub,.hero-stage .run-time{display:none}.hero-stage .run-btn{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;background:#070d1a8c;border-color:#ffffff47;width:46px;height:46px}.hero-stage .run-bigplay{z-index:3}.hero-scrim{z-index:-1;pointer-events:none;background:linear-gradient(90deg, #060b16f5 0%, #060b16db 32%, #060b1659 62%, #060b161a 100%), linear-gradient(0deg, var(--bg) 0%, transparent 22%), linear-gradient(180deg, #060b16b3, transparent 24%);position:absolute;inset:0}.hero-inner{max-width:var(--wrap);padding:96px 0 120px}.hero-copy{max-width:640px}.hero h1{margin-bottom:.35em}.hero .lead{color:#c3cee3;max-width:30em}.hero-meta{flex-wrap:wrap;gap:10px;margin:2.4em 0 0;padding:0;list-style:none;display:flex}.hero-meta li{font-size:var(--text-sm);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff12;border:1px solid #ffffff24;border-radius:999px;align-items:center;gap:8px;padding:8px 14px;font-weight:600;display:inline-flex}.hero-meta li:before{content:"";background:var(--mint-400);width:7px;height:7px;box-shadow:0 0 10px var(--mint-400);border-radius:50%}.hero-live{z-index:2;right:max(20px, calc((100% - var(--wrap)) / 2));border-radius:var(--radius);-webkit-backdrop-filter:blur(14px)saturate(1.3);backdrop-filter:blur(14px)saturate(1.3);max-width:280px;box-shadow:var(--shadow-3);font-size:var(--text-sm);background:#0a12228c;border:1px solid #ffffff29;padding:16px 18px;position:absolute;top:112px}.hero-live b{font-family:var(--font-display);margin-bottom:4px;font-size:1.05rem;display:block}.hero-live .pill{margin-bottom:8px}.hero-live p{color:#c3cee3;margin:0}.hero-live a{color:var(--signal-400);font-weight:700;text-decoration:none}.hero-live a:hover{text-decoration:underline}@media (prefers-reduced-motion:no-preference){.hero-copy>*{animation:rise .9s var(--ease) both}.hero-copy>:nth-child(2){animation-delay:80ms}.hero-copy>:nth-child(3){animation-delay:.16s}.hero-copy>:nth-child(4){animation-delay:.24s}.hero-copy>:nth-child(5){animation-delay:.32s}.hero-live{animation:rise 1s .5s var(--ease) both}}@keyframes rise{0%{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}.values{z-index:4;grid-template-columns:repeat(3,1fr);gap:18px;margin:-64px auto 0;padding:0;list-style:none;display:grid;position:relative}.values li{border-radius:var(--radius);background:var(--surface-glass);border:1px solid var(--rule);-webkit-backdrop-filter:blur(18px)saturate(1.4);backdrop-filter:blur(18px)saturate(1.4);box-shadow:var(--shadow-2);padding:24px 24px 26px}.values h3{margin:14px 0 6px}.values p{color:var(--text-2);font-size:var(--text-sm);margin:0}.v-icon{color:#fff;background:linear-gradient(145deg, var(--royal-600), #0d1633);border-radius:14px;place-items:center;width:46px;height:46px;display:grid;box-shadow:0 8px 18px -6px #2c4fd9b3,inset 0 1px #ffffff40}.v-icon svg{width:24px;height:24px}.v-icon.amber{color:#2a1d00;background:linear-gradient(145deg,#ffc94d,#ff8a1c);box-shadow:0 8px 18px -6px #ff9f1cb3,inset 0 1px #ffffff80}.v-icon.mint{color:#02261d;background:linear-gradient(145deg,#35e0b5,#0f8f78);box-shadow:0 8px 18px -6px #35e0b599,inset 0 1px #fff6}.page-hero{background:var(--grad-night);padding:72px 0 80px;position:relative;overflow:hidden}.page-hero:after{content:"";pointer-events:none;border:44px solid #ffffff09;border-radius:50%;width:520px;height:520px;position:absolute;top:-160px;right:-140px;box-shadow:inset 0 0 0 2px #ffb6272e}.page-hero .wrap{z-index:1;position:relative}.page-hero h1{max-width:14em;margin-bottom:.3em;font-size:clamp(2.2rem,6vw,3.9rem)}.page-hero .lead{color:#c3cee3;margin-bottom:0}.page-hero .crumbs{color:#b0bdd6;margin-bottom:1.4em}.page-hero .crumbs a{color:#d9e3f7}.page-hero .eyebrow{color:#b0bdd6}.after-hero{padding-top:56px}.card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:24px;position:relative}.pill{letter-spacing:.03em;border-radius:999px;align-items:center;gap:6px;padding:5px 12px;font-size:.78rem;font-weight:800;display:inline-flex}.pill-example{color:var(--text);background:#ffb6272e;box-shadow:inset 0 0 0 1px #ffb6278c}.pill-example:before{content:"";background:var(--signal-500);border-radius:50%;width:6px;height:6px}.pill-ok{background:var(--ok-bg);color:var(--ok);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--ok) 40%, transparent)}.pill-ok:before{content:"✓";font-weight:900}.note{border-left:4px solid var(--signal-500);background:var(--surface-2);border-radius:10px;padding:12px 16px}.demo{width:100%;max-width:520px;margin-inline:auto;padding:16px}.demo-top{flex-wrap:wrap;align-items:center;gap:10px;margin:2px 2px 14px;display:flex}.run{margin:0}.run-stage{aspect-ratio:4/5;background:var(--art-grass);border-radius:14px;width:100%;max-height:74vh;position:relative;overflow:hidden}.run-canvas{width:100%;height:100%;position:absolute;inset:0}.run-poster{transition:opacity .4s;position:absolute;inset:0}.run-poster.gone{opacity:0;pointer-events:none}.run-status{background:color-mix(in srgb, var(--surface) 92%, transparent);border-radius:10px;margin:0;padding:8px 12px;font-size:.9rem;font-weight:600;position:absolute;bottom:12px;left:12px;right:12px}.demo-wait{margin-bottom:0}.art{object-fit:cover;width:100%;height:100%}.art-grass{fill:var(--art-grass)}.art-road{fill:var(--art-road)}.art-dash{stroke:var(--art-line);stroke-width:3px;stroke-dasharray:12 12;fill:none}.art-lane{fill:none;stroke:var(--art-line);stroke-width:3px;stroke-dasharray:12 12}.art-island{fill:var(--art-island)}.art-kerb{fill:none;stroke:var(--art-line);stroke-width:4px}.art-car{fill:var(--signal-500)}.run-bigplay{background:var(--grad-signal);min-height:58px;color:var(--btn-ink);font:800 1.1rem var(--font);cursor:pointer;border:0;border-radius:999px;align-items:center;gap:8px;padding:0 28px 0 22px;display:inline-flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 12px 30px -6px #ff9f1c99}.run-bar{align-items:center;gap:10px;padding:12px 2px 2px;display:flex}.run-btn{border:1.5px solid var(--rule-strong);background:var(--surface);width:44px;height:44px;color:var(--text);cursor:pointer;transition:background var(--t-fast), transform var(--t-fast);border-radius:50%;flex:none;place-items:center;display:grid}.run-btn:hover{transform:scale(1.06)}.run-btn:disabled{opacity:.45;cursor:default;transform:none}.run-scrub{min-width:0;height:44px;accent-color:var(--correct);flex:1}.run-time{font-variant-numeric:tabular-nums;color:var(--text-2);text-align:right;flex:none;min-width:5.5em;font-size:.85rem}.seg{background:var(--surface-2);border-radius:14px;grid-template-columns:1fr 1fr;gap:6px;margin:12px 0;padding:5px;display:grid;box-shadow:inset 0 1px 3px #0000001f}.seg-btn{min-height:46px;color:var(--text);font:700 .98rem var(--font);cursor:pointer;transition:background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);background:0 0;border:0;border-radius:10px}.seg-btn:hover{background:color-mix(in srgb, var(--text) 8%, transparent)}.seg-btn[aria-pressed=true].seg-correct{background:var(--correct);color:#fff;box-shadow:0 4px 12px -3px color-mix(in srgb, var(--correct) 60%, transparent)}.seg-btn[aria-pressed=true].seg-mistake{background:var(--mistake);color:#fff;box-shadow:0 4px 12px -3px color-mix(in srgb, var(--mistake) 60%, transparent)}@media (prefers-color-scheme:dark){.seg-btn[aria-pressed=true].seg-correct,.seg-btn[aria-pressed=true].seg-mistake{color:#0b1117}}.on-dark .seg-btn[aria-pressed=true].seg-correct,.on-dark .seg-btn[aria-pressed=true].seg-mistake{color:#0b1117}.demo-note,.explain{border-radius:12px;padding:14px 16px;font-size:.97rem}.demo-note p,.explain p{margin:0 0 .4em}.demo-note p:last-child,.explain p:last-child{margin:0}.is-correct{background:var(--correct-bg);border-left:5px solid var(--correct)}.is-mistake{background:var(--mistake-bg);border-left:5px solid var(--mistake)}.demo-route{color:var(--text-2);font-size:.85rem}.explain h3{margin-bottom:.3em}.explain{margin-bottom:18px}.band{background:var(--surface-2);margin-top:var(--s-8);padding:88px 0;position:relative}.section{padding-top:var(--s-8)}.section-head{max-width:40em;margin-bottom:36px}.section-head h2{margin-bottom:.3em}.section-head .lead{margin-bottom:0}.steps{counter-reset:step;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0 0;padding:0;list-style:none;display:grid}.steps li{counter-increment:step;padding:24px;position:relative}.steps li:before{content:counter(step);color:var(--rule);font-size:2.6rem;font-weight:800;line-height:1;position:absolute;top:12px;right:18px}.steps h3{margin-top:14px}.steps p{color:var(--text-2);margin:0}.ic-fill{fill:var(--brand)}.ic-line{stroke:var(--brand)}.ic-mark,.ic-dash{stroke:var(--signal-500)}.ic-hole{fill:var(--surface)}.grid2{grid-template-columns:1fr 1fr;gap:28px 40px;margin-top:24px;padding:0;list-style:none;display:grid}.grid2 li{border-top:3px solid var(--signal-500);padding-top:14px}.grid2 p{color:var(--text-2);margin:0}.two{grid-template-columns:1fr 1fr;gap:28px;display:grid}.plain{padding-left:1.2em}.plain li{margin-bottom:.7em}.row-between{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:16px;display:flex}.try-section{margin-top:var(--s-8);background:var(--grad-night);padding:96px 0;position:relative;overflow:hidden}.try-section:before{content:"";pointer-events:none;border:90px solid #ffffff06;border-radius:50%;width:1100px;height:1100px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 2px #ffb62724,0 0 0 130px #ffffff03}.try-grid{grid-template-columns:.9fr 1.1fr;align-items:center;gap:56px;display:grid;position:relative}.try-grid .lead{color:#c3cee3}.try-points{gap:14px;margin:1.6em 0 0;padding:0;list-style:none;display:grid}.try-points li{color:var(--text);grid-template-columns:34px 1fr;align-items:start;gap:12px;display:grid}.try-more{color:var(--text-2);margin:1.6em 0 0}.try-more a{font-weight:700}.try-points b{width:34px;height:34px;color:var(--signal-400);font-family:var(--font-display);background:#ffb62729;border-radius:50%;place-items:center;display:grid;box-shadow:inset 0 0 0 1px #ffb62780}.try-wrap{position:relative}.try-wrap .demo{background:var(--surface-glass);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:var(--shadow-3), var(--ring-glow);border-color:#ffffff29}.page{padding:56px 0 0}.cards{grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px;padding:0;list-style:none;display:grid}.cards>li{display:flex}.reveal-fill{width:100%;display:flex}.rcard{color:var(--text);width:100%;transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease), border-color var(--t-med);flex-direction:column;padding:0;text-decoration:none;display:flex;overflow:hidden}.rcard:hover{box-shadow:var(--shadow-3);border-color:color-mix(in srgb, var(--signal-500) 55%, var(--rule));transform:translateY(-5px)}.rcard h3{margin:12px 0 4px}.rcard-body{flex-direction:column;flex:1;align-items:flex-start;gap:4px;padding:4px 22px 22px;display:flex}.rcard-body p{margin:0}.rcard-art{background:var(--ink-800);border-bottom:1px solid var(--rule);height:150px;position:relative;overflow:hidden}.rcard-art .art{transition:transform .8s var(--ease);position:absolute;inset:0;transform:scale(1.35)}.rcard:hover .rcard-art .art{transform:scale(1.5)rotate(8deg)}.rcard-art .pill{z-index:1;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#fff;background:#070d1ab3;position:absolute;top:14px;left:14px;box-shadow:inset 0 0 0 1px #fff3}.rcard-art .pill-ok{color:#6fe0a6}.rcard-go{color:var(--accent);font-weight:700;font-size:var(--text-sm);margin-top:auto;padding-top:14px}.rcard-go:after{content:" →";transition:transform var(--t-fast) var(--ease);display:inline-block}.rcard:hover .rcard-go:after{transform:translate(4px)}.rcard-tile{background:linear-gradient(135deg, var(--ink-700), var(--ink-950));color:#fff;justify-content:space-between;align-items:center;height:118px;padding:0 22px;display:flex;position:relative;overflow:hidden}.rcard-tile:after{content:"";border:22px solid #ffffff0f;border-radius:50%;width:170px;height:170px;position:absolute;top:-50px;right:-40px;box-shadow:inset 0 0 0 2px #ffb62759}.rcard-tile .rule-no{z-index:1;font-family:var(--font-display);letter-spacing:-.03em;font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;line-height:1;position:relative}.rcard-tile .rule-no small{letter-spacing:.12em;text-transform:uppercase;color:#b0bdd6;margin-bottom:6px;font-size:.7rem;font-weight:700;display:block}.rcard-tile .v-icon{z-index:1;position:relative}.rcard-tile.guide{background:linear-gradient(135deg, #1747d6, var(--ink-900) 80%)}.empty{grid-template-columns:240px 1fr;align-items:center;gap:28px;padding:24px;display:grid}.empty-art{border-radius:14px;width:240px;height:240px}.chips{flex-wrap:wrap;gap:8px;margin:0 0 20px;padding:0;list-style:none;display:flex}.chips li{background:var(--surface);border:1px solid var(--rule);box-shadow:var(--shadow-1);border-radius:999px;padding:6px 16px;font-size:.95rem;font-weight:600}.crumbs{font-size:var(--text-sm);color:var(--text-2)}.detail-head{flex-wrap:wrap;align-items:center;gap:10px 20px;margin-bottom:8px;display:flex}.detail-head h1{margin:0;font-size:clamp(2rem,5.5vw,3.2rem)}.detail-head .pill{margin:0}.stage-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:start;gap:32px;margin-top:16px;display:grid}.stage-view{position:sticky;top:90px}.stage-view .run-stage{aspect-ratio:4/5}.field{margin-bottom:18px}.field label,.field .label{margin-bottom:6px;font-size:.95rem;font-weight:700;display:block}select{width:100%;min-height:50px;font:500 1rem var(--font);color:var(--text);background:var(--surface);border:1.5px solid var(--rule-strong);border-radius:12px;padding:0 14px}.runlist{gap:8px;display:grid}.runbtn{text-align:left;border:1.5px solid var(--rule);background:var(--surface);min-height:54px;color:var(--text);font:700 1rem var(--font);cursor:pointer;transition:border-color var(--t-fast), transform var(--t-fast);border-radius:12px;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 16px;display:flex}.runbtn:hover{border-color:var(--text-2)}.runbtn span{color:var(--text-2);font-size:.9rem;font-weight:500}.runbtn-correct[aria-pressed=true]{border-color:var(--correct);background:var(--correct-bg)}.runbtn-mistake[aria-pressed=true]{border-color:var(--mistake);background:var(--mistake-bg)}.detail-facts{border-top:1px solid var(--rule);max-width:760px;margin-top:56px;padding-top:28px}.facts{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:0 0 20px;display:grid}.facts dt{font-size:var(--text-xs);color:var(--text-2);text-transform:uppercase;letter-spacing:.08em;font-weight:700}.facts dd{margin:2px 0 0;font-weight:700}.signin{text-align:left;border-radius:var(--radius-lg);box-shadow:var(--shadow-3);padding:36px}.nav-user{font-weight:600}.prose{max-width:44em}.prose h2{margin-top:1.7em;font-size:clamp(1.5rem,3vw,2rem)}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin-bottom:.4em}.flag{border:1.5px dashed var(--signal-500);background:color-mix(in srgb, var(--signal-500) 9%, var(--surface));border-radius:14px;margin:0 0 1.6em;padding:14px 18px}.flag strong{display:block}.chapters{counter-reset:ch;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;padding:0;list-style:none;display:grid}.chapters li{counter-increment:ch}.chapters li h3:before{content:counter(ch) " · ";color:var(--text-2)}.plans{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;padding:0;list-style:none;display:grid}.plans>li{border-radius:var(--radius-lg);transition:transform var(--t-med) var(--ease), box-shadow var(--t-med);flex-direction:column;padding:32px;display:flex}.plans>li:hover{box-shadow:var(--shadow-3);transform:translateY(-4px)}.plans>li:nth-child(2){background:linear-gradient(160deg, var(--ink-700), var(--ink-950));color:#f1f5fd;border-color:#ffb62773}.plans>li:nth-child(2) .muted{color:#b0bdd6}.plans h2{margin-bottom:.2em;font-size:1.8rem}.plans ul{padding:0;list-style:none}.plans ul li{margin-bottom:.7em;padding-left:28px;position:relative}.plans ul li:before{content:"✓";color:var(--mint-400);font-weight:900;position:absolute;left:0}.signin-providers{gap:14px;margin:1.4em 0;display:grid}.signin-providers form{gap:10px;display:grid}.signin-providers input[type=email]{min-height:52px;font:500 1rem var(--font);color:var(--text);background:var(--bg);border:1.5px solid var(--rule-strong);border-radius:12px;padding:0 14px}.facts-inline{flex-wrap:wrap;gap:6px 18px;display:flex}.route-list{columns:2 260px;padding-left:1.1em}.route-list li{break-inside:avoid;margin-bottom:.4em}.roles{flex-wrap:wrap;gap:8px;padding:0;list-style:none;display:flex}.roles li{background:var(--surface);border:1px solid var(--rule);border-radius:999px;padding:4px 14px;font-size:.9rem;font-weight:600}.not-yet{color:var(--text-2);border-left:3px solid var(--rule-strong);padding-left:14px}.inline-form{display:inline}.hero-solo{max-width:760px;position:relative}.chapter-cards{counter-reset:none;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px;margin:0;padding:0;list-style:none;display:grid}@media (min-width:1100px){.chapter-cards{grid-template-columns:repeat(5,1fr)}}.chapter-cards>li{display:flex}.chapter-cards>li>.chapter-card{flex:1}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.chapter-card{border-radius:var(--radius);transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);flex-direction:column;padding:0;display:flex;position:relative;overflow:hidden}.chapter-card:hover{box-shadow:var(--shadow-3);transform:translateY(-6px)}.chapter-img{aspect-ratio:8/5;background:var(--surface-2);position:relative;overflow:hidden}.chapter-img img{object-fit:cover;width:100%;height:100%;transition:transform .9s var(--ease)}.chapter-card:hover .chapter-img img{transform:scale(1.07)}.chapter-img:after{content:"";background:linear-gradient(#0000 45%,#060b16b3);position:absolute;inset:0}.chapter-no{z-index:1;font-family:var(--font-display);letter-spacing:-.05em;color:#fff;text-shadow:0 2px 20px #00000080;font-size:3.4rem;font-weight:800;line-height:1;position:absolute;bottom:6px;left:14px}.chapter-body{justify-items:start;gap:6px;padding:16px 18px 20px;display:grid}.chapter-body h3{margin:4px 0 0}.chapter-body p{margin:0}.chapter-cards+.prose{margin-top:32px}.rule-list{gap:14px;margin:16px 0 0;padding:0;list-style:none;display:grid}.rule-list li{grid-template-columns:32px 1fr;align-items:start;gap:12px;display:grid}.rule-mark{border-radius:50%;place-items:center;width:28px;height:28px;margin-top:1px;font-size:.9rem;font-weight:800;display:grid}.rule-good .rule-mark{color:var(--ok);background:var(--ok-bg)}.rule-bad .rule-mark{color:var(--mistake);background:var(--mistake-bg)}.rule-ref{display:block}.rule-panel{border-radius:var(--radius-lg);border:1px solid var(--rule);background:var(--surface);box-shadow:var(--shadow-2);padding:32px;position:relative;overflow:hidden}.rule-panel:before{content:"";background:linear-gradient(90deg, var(--mint-400), var(--sky-400));height:4px;position:absolute;inset:0 0 auto}.rule-panel.bad:before{background:linear-gradient(90deg, var(--coral-400), var(--signal-500))}.rule-panel h3{font-size:1.4rem}.flag-note{border-left:4px solid var(--signal-500);margin-top:32px;padding-left:14px}.links-row{margin-top:24px}.plans-line{flex-wrap:wrap;align-items:center}.plans-line h2{margin-bottom:.2em}.cta-band{margin-top:var(--s-8);border-radius:var(--radius-lg);background:var(--grad-night);color:var(--text);box-shadow:var(--shadow-3);padding:56px 48px;position:relative;overflow:hidden}.cta-band:after{content:"";border:40px solid #ffffff0a;border-radius:50%;width:380px;height:380px;position:absolute;bottom:-120px;right:-80px;box-shadow:inset 0 0 0 2px #ffb6274d}.cta-band>*{z-index:1;position:relative}.cta-band .muted{color:#b0bdd6}.modetabs-bar{margin-top:4px}.modetabs-bar .seg-btn[aria-selected=true]{background:var(--correct);color:#fff;box-shadow:0 4px 12px -3px color-mix(in srgb, var(--correct) 60%, transparent)}@media (prefers-color-scheme:dark){.modetabs-bar .seg-btn[aria-selected=true]{color:#0b1117}}.on-dark .modetabs-bar .seg-btn[aria-selected=true]{color:#0b1117}.tryit{width:100%;max-width:560px;margin-inline:auto}.tryit-choice{margin:4px 0 12px}.tryit-hint{margin:-2px 0 8px}.choices{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px;display:grid}.choices-3{grid-template-columns:repeat(3,minmax(0,1fr))}.choice{border:1.5px solid var(--rule-strong);background:var(--surface);min-height:62px;color:var(--text);font:700 1.05rem var(--font);cursor:pointer;text-align:center;transition:transform var(--t-fast) var(--ease), border-color var(--t-fast), background var(--t-fast);border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:8px 6px;display:flex}.choice:hover{border-color:var(--text-2);transform:translateY(-2px)}.choice span{color:var(--text-2);font-size:.85rem;font-weight:500}.choice .choice-glyph{color:var(--text);font-size:1.3rem;font-weight:800;line-height:1}.choice[aria-pressed=true]{border-color:var(--correct);background:var(--correct-bg);box-shadow:inset 0 0 0 1px var(--correct), 0 6px 16px -6px color-mix(in srgb, var(--correct) 60%, transparent)}.tryit-go{width:100%;min-height:58px;margin-top:4px;font-size:1.1rem}.tryit-go:disabled{opacity:.5;box-shadow:none}.tryit-skip{text-align:center;margin:10px 0 0}.tryit-result{margin:14px 0 0}.tryit-result:focus{outline:none}.tryit-result .debrief-meta{flex-wrap:wrap;align-items:center;gap:8px;margin:4px 0 0;display:flex}.tryit-result .chip{background:var(--surface);color:var(--text);box-shadow:inset 0 0 0 1px var(--rule-strong);border-radius:999px;padding:4px 10px;font-size:.76rem;font-weight:700}.tryit-kicker{letter-spacing:.06em;text-transform:uppercase;color:var(--text-2);font-size:.8rem;font-weight:800}.is-ok{background:var(--ok-bg);border-left:5px solid var(--ok)}.tryit-actions{gap:8px;margin-top:12px;display:grid}@media (min-width:521px){.tryit-actions{grid-template-columns:1fr 1fr}}.signin-page,.notfound{background:var(--grad-night);align-items:center;min-height:68vh;padding:80px 0 96px;display:flex;position:relative;overflow:hidden}.signin-page>.wrap,.notfound>.wrap{z-index:1;position:relative}.notfound:before{content:"";border:80px solid #ffffff08;border-radius:50%;width:900px;height:900px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 2px #ffb62733}.notfound h1{font-size:clamp(3rem,12vw,6.5rem)}.signin{background:var(--surface-glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-color:#ffffff29}.signin h1{font-size:2.4rem}.signin-page .btn-quiet,.notfound .btn-quiet{color:var(--text)}main:has(.signin-page,.notfound)+.site-foot{margin-top:0}.topic-h{margin:0 0 20px;font-size:1.6rem}.topic-h:not(:first-child){margin-top:56px}.hero-pill{margin:1.4em 0 0}.grad-text{background:var(--grad-text);color:#0000;-webkit-background-clip:text;background-clip:text}.not-yet{margin-top:2em}@media (scripting:enabled) and (prefers-reduced-motion:no-preference){.reveal{opacity:0;transition:opacity .8s var(--ease), transform .8s var(--ease);transition-delay:calc(var(--i,0) * 70ms);transform:translateY(26px)}.reveal.in{opacity:1;transform:none}}@media (max-width:960px){.values{grid-template-columns:1fr;margin-top:-40px}.steps,.grid2,.two,.foot-grid,.try-grid{grid-template-columns:1fr}.try-grid{gap:36px}.stage-grid{grid-template-columns:1fr}.stage-view{position:static}.section{padding-top:56px}.band{padding:56px 0}.try-section{padding:64px 0}.hero-live{display:none}}@media (max-width:760px){.hero{--hero-h:max(340px, 70vw);align-items:flex-end;min-height:0}.hero-stage{height:var(--hero-h);bottom:auto}.hero-scrim{background:linear-gradient(180deg, #060b168c 0%, #060b160d 25%, #060b1659 52%, var(--ink-950) 70%)}.hero-inner{padding:calc(var(--hero-h) + 8px) 0 88px}.hero-stage .run-bar{bottom:auto;right:16px;top:calc(var(--hero-h) - 62px)}.hero-meta{margin-top:1.8em}.cta-band{padding:40px 26px}}@media (max-width:520px){body{font-size:1rem}.nav-how{display:none}.nav-link{padding:10px 8px;font-size:.9rem}.nav{gap:0}.head-row{gap:6px}.site-head .btn-small{margin-left:4px;padding:0 14px}.logo-name{font-size:1.1rem}.logo{gap:8px}.empty{grid-template-columns:1fr}.empty-art{width:100%;height:180px}.cta .btn{flex:100%}.run-stage{max-height:68vh}.cards{grid-template-columns:1fr}.page-hero{padding:48px 0 52px}.after-hero,.page{padding-top:40px}.rule-panel,.signin{padding:24px}.chapter-cards{scroll-snap-type:x mandatory;scrollbar-width:none;grid-template-columns:repeat(5,minmax(78%,1fr));gap:14px;margin:0 -4px;padding:4px 4px 22px;overflow-x:auto}.chapter-cards>li{scroll-snap-align:start}.foot-links{grid-template-columns:1fr 1fr}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}