:root{--bg: #0b1020;--fg: #e8ecf5;--muted: #9aa4bf;--accent: #4f7cff;font-family:Inter,Noto Sans SC,system-ui,-apple-system,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--fg);min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;justify-content:flex-end;padding:16px 24px}.lang-switcher{display:flex;gap:8px}.lang-switcher button{background:transparent;color:var(--muted);border:1px solid rgba(255,255,255,.15);border-radius:8px;padding:6px 12px;cursor:pointer;font-size:14px;transition:all .15s ease}.lang-switcher button.active,.lang-switcher button:hover{color:var(--fg);border-color:var(--accent)}main{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px}.hero h1{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:700;margin-bottom:16px}.hero p{font-size:clamp(1rem,2.5vw,1.25rem);color:var(--muted);margin-bottom:32px}.cta{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:12px 28px;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .15s ease}.cta:hover{opacity:.9}.footer{text-align:center;padding:24px;color:var(--muted);font-size:.875rem}