:root{--bg:#0b0c10;--card:#11131a;--text:#e7e8ee;--muted:#a9adbd;--line:#1f2330}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.container{max-width:980px;margin:0 auto;padding:24px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:10px 14px;border:1px solid var(--line);background:#141827;color:var(--text);cursor:pointer}.btn:hover{filter:brightness(1.08)}.input,textarea{width:100%;border-radius:12px;border:1px solid var(--line);background:#0f1220;color:var(--text);padding:12px;font-size:14px;outline:none}hr{border:0;border-top:1px solid var(--line);margin:16px 0}