:root{color-scheme:dark;--bg-gradient: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .15), transparent 55%), radial-gradient(circle at 80% 0%, rgba(255, 255, 255, .08), transparent 65%), radial-gradient(circle at 50% 100%, rgba(255, 255, 255, .12), transparent 60%), #000000;--card-bg: rgba(255, 255, 255, .04);--card-border: rgba(255, 255, 255, .08);--card-hover: rgba(255, 255, 255, .18);--text-primary: #f7f7ff;--text-muted: rgba(235, 235, 255, .7);--accent: #ffffff}*{box-sizing:border-box}a{color:inherit;text-decoration:none}body{margin:0;min-height:100vh;font-family:Inter,Segoe UI,sans-serif;color:var(--text-primary);background:var(--bg-gradient);display:flex;flex-direction:column}body.viewer-mode{overflow:hidden}.control-btn{align-items:center;background:#0000;border:1px solid rgba(255,255,255,0);border-radius:50%;color:#fff;cursor:pointer;display:inline-flex;font-size:.9rem;height:44px;justify-content:center;letter-spacing:.05em;padding:0;transition:background .16s ease,transform .12s ease,border-color .16s ease;width:44px;z-index:10000}.control-btn:hover{background:#fff0}.control-btn:active{transform:translateY(1px)}#fullscreenIcon.control-btn{position:fixed;right:16px;bottom:16px}#statsToggle.control-btn{position:fixed;right:60px;bottom:16px}#controlsToggle.control-btn{position:fixed;right:104px;bottom:16px}#fullscreenIcon img,#statsToggle img,#controlsToggle img{width:44px;height:44px;display:inline-block;opacity:.75}#fullscreenIcon img:hover,#statsToggle img:hover,#controlsToggle img:hover{opacity:1}#fullscreenIcon .icon-hide,#statsToggle .icon-hide,#controlsToggle .icon-hide{display:none}#fullscreenIcon[aria-pressed=true] .icon-hide,#statsToggle[aria-pressed=true] .icon-hide,#controlsToggle[aria-pressed=true] .icon-hide{display:inline-block}#fullscreenIcon[aria-pressed=true] .icon-show,#statsToggle[aria-pressed=true] .icon-show,#controlsToggle[aria-pressed=true] .icon-show{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.viewer-frame{position:relative;width:100%;aspect-ratio:16 / 9;border-radius:0 0 20px 20px;overflow:hidden;border:1px solid var(--card-border);background:#000;box-shadow:0 26px 48px -30px #ffffff80}.viewer-mount{position:absolute;inset:0;display:block;background:#000}.viewer-frame #controlsToggle.control-btn,.viewer-frame #statsToggle.control-btn,.viewer-frame #fullscreenIcon.control-btn{position:absolute!important;bottom:1rem}.viewer-frame #fullscreenIcon.control-btn{right:1rem}.viewer-frame #statsToggle.control-btn{right:8rem}.viewer-frame #controlsToggle.control-btn{right:4.5rem}.viewer-frame .viewer-stats{position:absolute!important;top:0rem;left:0rem}.viewer-frame .viewer-gui{position:absolute;top:0rem;right:0rem}.viewer-frame #splash{position:absolute;inset:0}.viewer-frame .splash-instructions ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.viewer-frame .splash-instructions li{letter-spacing:.18em}.site-header{display:flex;justify-content:space-between;align-items:center;padding:1rem clamp(1.5rem,6vw,4rem)}.branding{display:flex;align-items:center;gap:1rem}.logo{width:52px;height:52px;border-radius:14px;background:#ffffff14;padding:.4rem;backdrop-filter:blur(10px)}.brand-text{display:flex;flex-direction:column;gap:0rem}.site-name{font-size:clamp(1.4rem,2.5vw,1.8rem);font-weight:600;letter-spacing:.04em}.tagline{font-size:.85rem;color:var(--text-muted)}.auth-links{display:flex;gap:1rem;align-items:center}.auth-link{padding:.55rem 1.2rem;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:#ffffff08;font-size:.95rem;letter-spacing:.015em;transition:background .2s ease,border-color .2s ease,transform .2s ease}.auth-link:hover{background:#ffffff1f;border-color:#ffffff59;transform:translateY(-1px)}.auth-link.signup{background:#6f86ff2e;border-color:#8296ff73}main{width:min(1200px,calc(100% - 3rem));margin:0 auto 3rem;flex:1;display:flex;flex-direction:column;gap:2.5rem;padding-bottom:3rem}[data-hero]{padding:0 clamp(.5rem,4vw,1rem);max-width:700px}.hero-title{font-size:clamp(2rem,4vw,2.8rem);font-weight:600;margin:0 0 .75rem}.hero-copy{margin:0;color:var(--text-muted);font-size:1.05rem;line-height:1.6}[data-gallery]{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:clamp(1rem,2vw,1.6rem);padding-bottom:2rem}.gallery-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:18px;overflow:hidden;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;min-height:280px;display:flex}.gallery-card:hover{border-color:#ffffff80;transform:translateY(-6px);box-shadow:0 18px 38px -22px #ffffffbf;background:var(--card-hover)}.gallery-link{display:flex;flex-direction:column;width:100%}.gallery-figure{margin:0;display:flex;flex-direction:column;height:100%}.gallery-image{width:100%;height:210px;object-fit:cover;background:#ffffff0d}.gallery-caption{margin:0;padding:1rem 1.2rem 1.4rem;font-size:1.05rem;letter-spacing:.02em}[data-viewer]{display:none;width:100%}.has-formula [data-viewer]{display:block}.has-formula [data-hero],.has-formula [data-gallery]{display:none!important}footer{margin-top:auto;padding:1.5rem clamp(1.5rem,6vw,4rem);font-size:.85rem;color:#ebebff80;border-top:1px solid rgba(255,255,255,.05)}@media (max-width: 640px){.site-header{flex-direction:column;gap:1.5rem;align-items:flex-start}.auth-links{width:100%}.auth-link{flex:1;text-align:center}main{width:min(100%,calc(100% - 2rem))}}#helpIcon.control-btn{position:fixed;right:16px;bottom:70px;text-decoration:none}#splash{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#000000bf;z-index:9999;opacity:1;transition:opacity .5s ease}#splash.hidden{opacity:0;pointer-events:none}.splash-content{text-align:center;color:#f0f0f0;padding:24px 32px;background:#0000}.splash-title{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:clamp(32px,6vw,64px);letter-spacing:.2em;margin:0 0 12px;opacity:.95}.splash-subtitle{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:clamp(14px,2.2vw,18px);opacity:.95;letter-spacing:.2em;margin:0 0 64px}.splash-instructions{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";color:#e6e6e6;font-size:clamp(8px,1.1vw,12px);letter-spacing:.2em;line-height:1.6;text-align:center;max-width:min(80vw,560px);margin:64px auto auto;opacity:.95}.splash-instructions p{margin:6px 0}.splash-button{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:clamp(14px,2.2vw,18px);letter-spacing:.2em;padding:10px 20px;border-radius:9999px;border:0px solid rgba(0,0,0,1);background:#000000bf;color:#fff;cursor:pointer;transition:background .16s ease,transform .12s ease}.splash-button.circle{width:80px;height:80px;padding:0;border-radius:50%;display:inline-flex;align-items:center;justify-content:center}.splash-button:hover{background:#ffffffbf;color:#000}.splash-button:active{transform:translateY(1px)}