:root{--bg:#0b0b0f;--card:#14151a;--text:#f1f5f9;--muted:#9aa4b2;--accent:#86e1ff}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg);color:var(--text)}a{color:var(--text);text-decoration:none}a.active{color:var(--accent)}.container{max-width:1080px;margin:0 auto;padding:20px}.header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}.brand{font-weight:700;font-size:20px;letter-spacing:.3px}.nav{display:flex;gap:14px;flex-wrap:wrap}.main{background:var(--card);border-radius:16px;padding:24px;box-shadow:0 8px 30px #00000040;min-height:55vh}h1{margin-top:0}input,textarea,button{width:100%;padding:12px;border:1px solid #2a2f3a;background:#0f1116;color:var(--text);border-radius:10px;margin:6px 0}button{cursor:pointer;background:linear-gradient(90deg,#86e1ff,#6dd6ff);color:#0b0b0f;font-weight:700;border:0}.footer{opacity:.8;padding:18px 0}