:root{--bg:#0b0d10;--panel:#14181d;--panel-2:#1c2128;--border:#2a313a;--text:#e6e8eb;--muted:#8b95a1;--accent:#10a37f;--accent-2:#0e8a6c;--warn:#f0b429;--danger:#e5484d;--radius:12px}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:var(--accent)}.container{max-width:960px;margin:0 auto;padding:32px 20px}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:8px;border:1px solid transparent;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;font-size:14px;transition:.15s}.btn:hover{background:var(--accent-2)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{background:transparent;border-color:var(--border);color:var(--text)}.tabs{display:inline-flex;background:var(--panel-2);padding:4px;border-radius:10px;border:1px solid var(--border);gap:4px;margin-bottom:16px}.tab{padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:500;color:var(--muted);background:transparent;border:none;font-size:14px}.tab.active{background:var(--panel);color:var(--text);box-shadow:0 1px 0 var(--border)}.pkg-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:12px;gap:12px}.pkg{border:1px solid var(--border);border-radius:var(--radius);padding:16px;background:var(--panel-2);cursor:pointer;transition:.15s;position:relative}.pkg.selected,.pkg:hover{border-color:var(--accent)}.pkg.selected{box-shadow:0 0 0 1px var(--accent)}.pkg .label{font-weight:600;font-size:16px}.pkg .days{color:var(--muted);font-size:13px;margin:4px 0 12px}.pkg .price{font-size:22px;font-weight:700}.pkg .end{color:var(--muted);font-size:12px;margin-top:8px}.badge{position:absolute;top:-10px;right:12px;font-size:11px;padding:3px 10px;border-radius:999px;background:var(--accent);color:#fff;font-weight:600}.badge.popular{background:var(--warn);color:#1a1a1a}.form{display:grid;grid-gap:10px;gap:10px;max-width:460px;margin-top:24px}.input{padding:10px 12px;border:1px solid var(--border);background:var(--panel-2);color:var(--text)}.alert,.input{border-radius:8px;font-size:14px}.alert{padding:12px 14px;background:rgba(229,72,77,.1);border:1px solid rgba(229,72,77,.3);color:var(--danger)}h1{font-size:28px;margin:0 0 6px}.subtitle{color:var(--muted);margin-bottom:28px}.qr-box{display:grid;grid-gap:12px;gap:12px;align-items:center;text-align:center}.qr-box img{width:240px;height:240px;background:#fff;padding:12px;border-radius:12px}.kv{display:grid;grid-template-columns:140px 1fr;grid-gap:6px 12px;gap:6px 12px;text-align:left;font-size:14px}.kv .k{color:var(--muted)}