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header{background:var(--ai);color:#fff;align-items:center;gap:8px;padding:12px 14px;display:flex}.ai-msgs{flex-direction:column;flex:1;gap:10px;padding:12px;display:flex;overflow-y:auto}.msg{border-radius:12px;max-width:92%;padding:9px 12px;font-size:.94rem}.msg.user{background:var(--primary-soft);align-self:flex-end}.msg.assistant{background:var(--surface-2);align-self:flex-start}.ai-input{border-top:1px solid var(--border);gap:8px;padding:10px;display:flex}.ai-input textarea{resize:none;flex:1;height:44px}.hero{text-align:center;background:radial-gradient(1200px 400px at 50% -10%, var(--primary-soft), transparent);padding:56px 24px 36px}.hero h1{letter-spacing:-1px;margin-bottom:10px;font-size:clamp(2rem,5vw,3rem)}.hero p.lead{color:var(--text-2);max-width:680px;margin:0 auto 22px;font-size:1.1rem}.feature{align-items:flex-start;gap:12px;display:flex}.feature 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