:root{color-scheme:dark;font-family:Inter,system-ui,sans-serif;--hero-bg: #0a0e0c;--ink: #f7faf5;--muted: #9aa7bd;--line: rgba(255, 255, 255, .16);--panel: rgba(10, 13, 11, .62);--accent: #1f6feb}body{margin:0;background:var(--hero-bg);color:var(--ink)}.hero{position:relative;isolation:isolate;min-height:100svh;overflow:hidden;background:var(--hero-bg)}.hero:before{position:absolute;top:0;right:0;bottom:0;left:0;z-index:-3;content:"";background-image:radial-gradient(120% 90% at 50% 42%,#080a0900 30%,#080a099e),url(/arzach-hero.webp),linear-gradient(135deg,#0c0f0d,#11160f);background-repeat:no-repeat;background-position:center,center top,center;background-size:cover,cover,cover}.hero:after{position:absolute;top:0;right:0;bottom:0;left:0;z-index:-2;content:"";background:linear-gradient(180deg,rgba(0,0,0,.42),transparent 32%,rgba(0,0,0,.46)),linear-gradient(90deg,rgba(0,0,0,.46),transparent 28%,transparent 72%,rgba(0,0,0,.46))}.brand{position:fixed;top:clamp(16px,2vw,26px);left:clamp(16px,2vw,26px);z-index:35;font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}.shell{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:24px;min-height:100svh;display:flex;flex-direction:column}.centered{flex:1;display:grid;place-items:center;text-align:center}.centered-inner{max-width:520px;display:grid;gap:16px;justify-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--muted);margin:0}h1{font-size:clamp(36px,7vw,64px);margin:0;letter-spacing:-.02em}.muted{color:var(--muted)}.error{color:#ff8a8a}.cards{display:grid;gap:12px;width:100%}.card,.button{border:1px solid var(--line);background:var(--panel);color:inherit;border-radius:12px;padding:16px;text-align:left;cursor:pointer;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);font:inherit}.card{display:grid;gap:4px}.button{text-align:center;text-decoration:none;cursor:pointer}.header{display:flex;justify-content:space-between;gap:16px;align-items:end;padding:56px 0 16px}.chat{flex:1;display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.bubble{padding:12px 14px;border-radius:12px;max-width:80%;white-space:pre-wrap;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.bubble.user{align-self:flex-end;background:var(--accent)}.bubble.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--line)}.composer{display:flex;gap:12px;padding-bottom:16px}.composer input{flex:1;border-radius:12px;border:1px solid var(--line);background:#0a0d0bb8;color:inherit;padding:12px 14px;font:inherit}.composer button{border-radius:12px;border:1px solid var(--line);background:var(--accent);color:var(--ink);padding:12px 18px;cursor:pointer;font:inherit}.composer button:disabled{opacity:.5;cursor:default}.agent-picker{display:flex;flex-direction:column;gap:6px}.agent-picker select{border-radius:10px;border:1px solid var(--line);background:#0a0d0bb8;color:inherit;padding:8px 10px;font:inherit}