:root{--color-primary:#3525cd;--color-primary-hover:#2a1cb3;--color-primary-deep:#1b1367;--color-primary-night:#0b003a;--color-primary-tint:color-mix(in srgb, var(--color-primary) 5%, transparent);--color-primary-border:color-mix(in srgb, var(--color-primary) 20%, transparent);--color-primary-border-soft:color-mix(in srgb, var(--color-primary) 15%, transparent);--color-primary-soft:color-mix(in srgb, var(--color-primary) 8%, #fff);--color-accent:#e8a33d;--color-accent-hover:#f0b458;--color-on-accent:#5c3a0e;--color-success:#00d26a;--color-success-text:#047a3f;--color-danger:#b42318;--color-danger-tint:#fef3f2;--color-ink:#141b2b;--color-ink-hover:#26304a;--color-heading:#141a16;--color-title:#11111a;--color-text:#464555;--color-muted:#5c665f;--color-muted-alt:#5e5c66;--color-subtle:#706e80;--color-placeholder:#666e69;--color-badge-text:#323232;--color-page:#fafafa;--color-surface:#fff;--color-border:#dee3d6;--color-track:#e9edff;--color-track-warm:#efeee7;--color-chip:#f3f5ee;--color-footer:var(--color-primary);--color-footer-border:#dee3d64d;--color-footer-text:#ffffffa6;--color-footer-logo:#ffffffb3;--level-beginner-bg:#66d200b3;--level-beginner-border:#6db926;--level-medium-bg:#e4a010b3;--level-medium-border:#c69731;--level-high-bg:#dc2626b3;--level-high-border:#c81e1e;--hero-gradient:linear-gradient(104.13deg, var(--color-primary) 46.78%, var(--color-primary-deep) 109.51%);--hero-text-soft:#dee3d6;--glass-bg:#ffffff29;--glass-border:#dee3d61a;--font-display:var(--font-space-grotesk), "Space Grotesk", system-ui, sans-serif;--font-body:var(--font-inter), "Inter", system-ui, sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:14px;--radius-xl:24px;--radius-pill:9999px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:28px;--space-8:32px;--space-11:44px;--space-12:48px;--space-16:64px;--space-24:96px;--container:1056px;--container-wide:1216px;--gutter:24px;--header-height:65px;--shadow-card:0 12px 28px -10px #8354001a, 0 4px 12px 0 #00000005;--shadow-button:0 4px 6px -1px color-mix(in srgb, var(--color-primary) 20%, transparent), 0 2px 4px -2px color-mix(in srgb, var(--color-primary) 20%, transparent);--shadow-modal:0 16px 20px #12291f1f;--focus-ring:var(--color-primary);--focus-ring-on-dark:#ffd48a;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--duration-fast:.15s;--duration-base:.24s;--duration-slow:.42s;--skeleton-base:color-mix(in srgb, var(--color-primary) 6%, #eef0f4);--skeleton-shine:color-mix(in srgb, var(--color-primary) 2%, #f8f9fb)}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important;animation-delay:0s!important}}body{background:var(--color-page);min-height:100vh;color:var(--color-heading);font-family:var(--font-body);-webkit-font-smoothing:antialiased;flex-direction:column;margin:0;font-size:16px;line-height:1.5;display:flex}main{flex:1 0 auto}h1,h2,h3,h4,p{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}img{max-width:100%}:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}[id]{scroll-margin-top:calc(var(--header-height) + 16px)}main:focus{outline:none}html:has(dialog[open]){overflow:hidden}.skip-link{z-index:100;border-radius:var(--radius-sm);background:var(--color-ink);color:#fff;padding:10px 16px;font-weight:600;transition:transform .15s;position:absolute;top:8px;left:8px;transform:translateY(-150%)}.skip-link:focus{transform:translateY(0)}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.container{width:100%;max-width:calc(var(--container) + 2 * var(--gutter));padding-inline:var(--gutter);margin-inline:auto}.container-wide{width:100%;max-width:calc(var(--container-wide) + 2 * var(--gutter));padding-inline:var(--gutter);margin-inline:auto}@media (max-width:480px){:root{--gutter:16px}}@keyframes fade-up{0%{opacity:.01;transform:translateY(var(--rise,12px))}}@keyframes fade-in{0%{opacity:.01}}@keyframes shimmer{to{background-position:-200% 0}}.reveal{animation:fade-up var(--duration-slow) var(--ease-out) backwards;animation-delay:calc(min(var(--i,0), 8) * 55ms)}.fade{animation:fade-in var(--duration-base) ease-out backwards}.skeleton{border-radius:var(--radius-sm);background:linear-gradient(100deg, var(--skeleton-base) 30%, var(--skeleton-shine) 50%, var(--skeleton-base) 70%) 0 0 / 200% 100%;animation:1.4s ease-in-out infinite shimmer;display:block}.skeleton-on-dark{--skeleton-base:#ffffff1a;--skeleton-shine:#fff3}