:root{--text: #1a2b3c;--text-muted: #5b6b7b;--accent: #2563eb;--accent-hover: #1d4ed8;--bg: #f6f8fa;--card-bg: #ffffff;--border: #e3e8ee;--danger: #dc2626;--success: #16a34a;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}#app{min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:720px;margin:0 auto;padding:0 20px}.site-header{background:var(--card-bg);border-bottom:1px solid var(--border)}.site-header .container{display:flex;align-items:center;min-height:60px}.logo{font-size:18px;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:-.01em}.logo:hover{color:var(--accent)}main{flex:1;padding:32px 0 48px}.site-footer{border-top:1px solid var(--border);padding:20px 0;color:var(--text-muted);font-size:14px}h1{font-size:26px;font-weight:700;letter-spacing:-.02em;margin:0 0 8px}.page-subtitle{color:var(--text-muted);margin:0 0 28px}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.tariff-list{display:flex;flex-direction:column;gap:16px}.tariff-card{display:flex;flex-direction:column;gap:12px}.tariff-card h2{font-size:20px;font-weight:700;margin:0}.tariff-card .description{color:var(--text-muted);margin:0}.tariff-meta{display:flex;flex-wrap:wrap;gap:8px}.badge{display:inline-block;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:3px 12px;font-size:13px;color:var(--text-muted)}.tariff-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:4px}.price{font-size:22px;font-weight:700;white-space:nowrap}.btn{display:inline-block;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:10px 22px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;text-decoration:none;text-align:center;transition:background-color .15s ease}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.6;cursor:default}.btn-block{display:block;width:100%}.form-group{margin:20px 0}label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}input[type=email]{width:100%;padding:10px 14px;font-size:16px;font-family:inherit;color:var(--text);background:#fff;border:1px solid var(--border);border-radius:8px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}input[type=email]:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb26}input[type=email].invalid{border-color:var(--danger)}.field-error{color:var(--danger);font-size:13px;margin-top:6px}.hint{color:var(--text-muted);font-size:13px;margin-top:6px}.error-box{background:#fef2f2;border:1px solid #fecaca;color:var(--danger);border-radius:8px;padding:12px 16px;margin:16px 0;font-size:14px}.status-card{text-align:center;padding:40px 24px}.status-card h1{margin-bottom:12px}.status-card p{color:var(--text-muted);margin:0 0 8px}.status-icon{font-size:44px;line-height:1;margin-bottom:16px}.status-icon.success{color:var(--success)}.status-icon.fail{color:var(--danger)}.status-card .btn{margin-top:20px}a{color:var(--accent)}.spinner{width:36px;height:36px;margin:0 auto 18px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading{color:var(--text-muted);text-align:center;padding:40px 0}.back-link{display:inline-block;margin-bottom:20px;color:var(--text-muted);text-decoration:none;font-size:14px}.back-link:hover{color:var(--accent)}@media (max-width: 480px){.tariff-bottom{flex-direction:column;align-items:stretch}.price{text-align:center}}