*{box-sizing:border-box}html{scroll-padding-top:calc(var(--header-height,110px) + 24px)}body{margin:0;background:var(--color-background);color:var(--color-text-primary);font:17px/1.75 system-ui,-apple-system,'Segoe UI',sans-serif}a{color:var(--color-link);text-underline-offset:4px}button,summary{font:inherit}a,summary{touch-action:manipulation}a:focus-visible,summary:focus-visible{outline:3px solid var(--color-focus);outline-offset:4px;border-radius:8px}h1,h2,p{margin:0 0 20px}h1{font-size:clamp(2rem,4vw,3.6rem);line-height:1.22;letter-spacing:-.025em}h2{font-size:1.45rem;line-height:1.4}p{color:var(--color-text-secondary)}.wrap{width:min(1160px,100% - 48px);margin:auto}.skip{position:fixed;inset-block-start:8px;inset-inline-start:8px;transform:translateY(-200%);z-index:20;background:var(--color-surface);padding:12px}.skip:focus{transform:none}.header{position:sticky;top:0;z-index:10;background:var(--color-background);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;gap:24px;padding-block:16px}.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:1;color:inherit;text-decoration:none}.brand img{width:48px;height:48px;border-radius:14px}.brand-copy{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.brand strong{line-height:1.35}.brand small{font-size:.8rem;max-width:36ch;color:var(--color-text-secondary);line-height:1.5}.language{position:relative;flex:none}.language summary{cursor:pointer;list-style:none;min-height:44px;padding:8px 12px;border:1px solid var(--color-control-border);border-radius:14px}.language summary::-webkit-details-marker{display:none}.language summary:after{content:'⌄';margin-inline-start:10px}.language-panel{position:absolute;inset-inline-end:0;top:calc(100% + 10px);width:240px;max-width:calc(100vw - 32px);max-height:calc(100dvh - var(--header-height,110px) - 30px);overflow:auto;overscroll-behavior:contain;background:var(--color-surface);padding:8px;border:1px solid var(--color-border);border-radius:16px;box-shadow:0 16px 40px var(--color-shadow)}.language-panel a{display:flex;justify-content:space-between;padding:8px 12px;min-height:44px;border-radius:10px;text-decoration:none;color:inherit}.language-panel [aria-current]{background:var(--color-selected-surface)}.hero{display:grid;grid-template-columns:44fr 56fr;align-items:center;gap:40px;padding-block:72px}.hero-copy{grid-column:1;grid-row:1}.hero-art{grid-column:2;grid-row:1 / 3;min-width:0;margin:0;padding:50px 24px;background:radial-gradient(circle at 20% 20%,var(--color-primary-soft),transparent 60%),var(--color-surface-subtle);border-radius:40px;border:1px solid var(--color-border);text-align:center}.hero-art img{width:clamp(80px,14vw,144px);border-radius:28%;margin-bottom:28px}.equation{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;direction:ltr;font-size:clamp(20px,2.7vw,34px);font-weight:650}.equation b{padding:8px 12px;border:1px solid var(--color-control-border);border-radius:14px;background:var(--color-surface)}.hero-art figcaption{margin-top:24px;color:var(--color-text-secondary);font-size:.85rem}.download{grid-column:1;grid-row:2}.channels{display:flex;flex-wrap:wrap;gap:12px}.channel{padding:12px 18px;background:var(--color-surface);border:1px solid var(--color-control-border);border-radius:16px;display:flex;flex-direction:column;min-width:150px}.channel small{font-size:.8rem;color:var(--color-text-secondary)}.section{padding-block:36px}.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.feature{border:1px solid var(--color-border);border-radius:24px;padding:28px;background:var(--color-surface)}.feature p:last-child{margin:0}.feature .metric{font-size:2rem;color:var(--color-link);font-weight:650}.groups{display:flex;gap:10px;flex-wrap:wrap}.groups span{border-radius:12px;background:var(--color-surface-subtle);padding:10px 16px}.reading{max-width:780px;padding-block:52px}.reading section{margin-block:32px}.reading p{white-space:pre-line;overflow-wrap:anywhere}.reading h1{font-size:clamp(2rem,4vw,3rem)}.date{font-size:.85rem}.contact{padding:24px;border:1px solid var(--color-border);border-radius:20px;background:var(--color-surface-subtle);margin-block:24px}.footer{border-top:1px solid var(--color-border);margin-top:48px;padding-block:40px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px}.footer a{display:block;padding-block:5px;overflow-wrap:anywhere}.footer p{font-size:.9rem}.footer small{display:block;margin-top:28px;color:var(--color-text-secondary)}.registration{font-size:.75rem}.registration a{display:inline-block;margin-inline-end:20px}main:focus{outline:none}@media(hover:hover){.language-panel a:hover{background:var(--color-hover-surface)}}.language-panel a:active{background:var(--color-pressed-surface)}@media(max-width:900px) and (orientation:portrait),(max-width:700px){.hero{grid-template-columns:1fr;gap:24px;padding-block:40px}.hero-copy,.hero-art,.download{grid-column:auto;grid-row:auto}.hero-art{padding:32px 16px}.features{grid-template-columns:1fr}.brand-copy{display:block}.brand small{display:block;margin-top:4px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}@media(max-width:480px){.wrap{width:calc(100% - 32px)}.header-inner{gap:12px}.brand img{width:38px;height:38px;border-radius:11px}.brand small{display:none}.brand strong{font-size:.95rem}.language summary{padding:8px;font-size:.9rem}.footer-grid{grid-template-columns:1fr}.hero-art{border-radius:28px}}@media(prefers-reduced-motion:no-preference){a,summary{transition:background .15s ease}} 
/* Long translations and enlarged text must grow vertically, including headings. */
h1,h2,.brand-copy,.feature,.channel{overflow-wrap:anywhere;min-width:0}
@media(max-width:480px){.brand small{display:block}.brand{align-items:flex-start}.header-inner{align-items:flex-start}.language{max-width:45%}.language summary{overflow-wrap:anywhere}}
@media(max-width:480px){.brand small{display:block}.brand{align-items:flex-start}.header-inner{align-items:flex-start}.language{max-width:45%}.language summary{overflow-wrap:anywhere}}