/* roulang page: index */
:root {
      --bg: #f6f9ff;
      --surface: #ffffff;
      --surface-soft: #eef5ff;
      --surface-blue: #eaf2ff;
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --primary-soft: #dbeafe;
      --secondary: #0f766e;
      --accent: #f59e0b;
      --accent-soft: #fff7ed;
      --text: #0f172a;
      --text-strong: #020617;
      --muted: #64748b;
      --muted-2: #94a3b8;
      --border: #dbe5f2;
      --border-strong: #bfdbfe;
      --success: #16a34a;
      --danger: #dc2626;
      --shadow-sm: 0 8px 22px rgba(15, 23, 42, .07);
      --shadow-md: 0 18px 48px rgba(37, 99, 235, .12);
      --shadow-lg: 0 28px 70px rgba(15, 23, 42, .16);
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 30px;
      --sidebar: 276px;
      --container: 1180px;
      --transition: 180ms ease;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background:
        radial-gradient(circle at 78% 8%, rgba(37, 99, 235, .14), transparent 30%),
        radial-gradient(circle at 8% 22%, rgba(14, 165, 233, .12), transparent 32%),
        linear-gradient(180deg, #fbfdff 0%, var(--bg) 42%, #f8fbff 100%);
      line-height: 1.65;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img,
    svg {
      display: block;
      max-width: 100%;
    }

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    ::selection {
      background: rgba(37, 99, 235, .18);
      color: var(--text-strong);
    }

    .skip-link {
      position: fixed;
      top: 12px;
      left: 12px;
      z-index: 1000;
      padding: 10px 14px;
      border-radius: 999px;
      background: var(--text-strong);
      color: #fff;
      transform: translateY(-140%);
      transition: transform var(--transition);
    }

    .skip-link:focus {
      transform: translateY(0);
      outline: 3px solid rgba(37, 99, 235, .32);
    }

    .sidebar {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--sidebar);
      padding: 22px 18px;
      background: rgba(255, 255, 255, .86);
      backdrop-filter: blur(18px);
      border-right: 1px solid rgba(219, 229, 242, .9);
      box-shadow: 14px 0 40px rgba(15, 23, 42, .05);
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 10px;
      border-radius: 18px;
      transition: background var(--transition), transform var(--transition);
    }

    .brand:hover {
      background: var(--surface-soft);
      transform: translateY(-1px);
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--primary), #38bdf8);
      color: #fff;
      display: grid;
      place-items: center;
      font-weight: 900;
      letter-spacing: -.04em;
      box-shadow: 0 14px 28px rgba(37, 99, 235, .28);
      flex: 0 0 auto;
    }

    .brand-text {
      min-width: 0;
    }

    .brand-name {
      display: block;
      font-size: 16px;
      font-weight: 900;
      color: var(--text-strong);
      line-height: 1.25;
    }

    .brand-sub {
      display: block;
      margin-top: 2px;
      font-size: 12px;
      color: var(--muted);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .nav-search {
      position: relative;
    }

    .nav-search input {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: #fff;
      color: var(--text);
      padding: 0 14px 0 42px;
      outline: none;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .nav-search input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .13);
      background: #fff;
    }

    .nav-search::before {
      content: "⌕";
      position: absolute;
      left: 16px;
      top: 50%;
      transform: translateY(-52%);
      color: var(--muted);
      font-size: 18px;
      z-index: 1;
    }

    .nav-label {
      margin: 4px 10px 8px;
      font-size: 12px;
      font-weight: 800;
      color: var(--muted-2);
      letter-spacing: .08em;
    }

    .nav-list {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .nav-link {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 48px;
      padding: 12px 14px;
      border-radius: 16px;
      color: var(--muted);
      font-weight: 800;
      transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
    }

    .nav-link .nav-ico {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      display: grid;
      place-items: center;
      background: var(--surface-soft);
      color: var(--primary);
      flex: 0 0 auto;
    }

    .nav-link:hover,
    .nav-link:focus {
      color: var(--primary-dark);
      background: var(--surface-soft);
      transform: translateX(2px);
      outline: none;
    }

    .nav-link.active {
      color: var(--primary-dark);
      background: linear-gradient(135deg, #eff6ff, #ffffff);
      box-shadow: inset 0 0 0 1px var(--border-strong), var(--shadow-sm);
    }

    .side-cta {
      margin-top: auto;
      padding: 16px;
      border: 1px solid var(--border-strong);
      border-radius: 22px;
      background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
      box-shadow: var(--shadow-sm);
    }

    .side-cta strong {
      display: block;
      font-size: 15px;
      color: var(--text-strong);
      margin-bottom: 6px;
    }

    .side-cta p {
      margin: 0 0 12px;
      font-size: 13px;
      color: var(--muted);
      line-height: 1.55;
    }

    .mobile-header {
      display: none;
      position: sticky;
      top: 0;
      z-index: 80;
      padding: 10px 14px;
      background: rgba(255, 255, 255, .9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .mobile-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      color: var(--text-strong);
      min-width: 0;
    }

    .mobile-title span:last-child {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .menu-toggle {
      width: 42px;
      height: 42px;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #fff;
      color: var(--primary);
      display: grid;
      place-items: center;
      transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
    }

    .menu-toggle:hover,
    .menu-toggle:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
      outline: none;
    }

    .page {
      margin-left: var(--sidebar);
      min-height: 100vh;
    }

    .container {
      width: min(100% - 48px, var(--container));
      margin: 0 auto;
    }

    .section {
      padding: 72px 0;
    }

    .section-tight {
      padding: 42px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 26px;
      margin-bottom: 28px;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 12px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(28px, 3vw, 42px);
      line-height: 1.18;
      letter-spacing: -.04em;
      color: var(--text-strong);
    }

    .section-desc {
      margin: 12px 0 0;
      max-width: 720px;
      color: var(--muted);
      font-size: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 900;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      white-space: nowrap;
      user-select: none;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn:focus {
      outline: 4px solid rgba(37, 99, 235, .18);
      outline-offset: 2px;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #0ea5e9);
      box-shadow: 0 16px 34px rgba(37, 99, 235, .25);
    }

    .btn-primary:hover {
      box-shadow: 0 20px 42px rgba(37, 99, 235, .32);
    }

    .btn-secondary {
      color: var(--primary-dark);
      background: #fff;
      border-color: var(--border-strong);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      background: var(--surface-soft);
    }

    .btn-ghost {
      color: var(--text);
      background: transparent;
      border-color: var(--border);
    }

    .btn-ghost:hover {
      background: #fff;
      border-color: var(--border-strong);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: 12px;
      font-weight: 900;
    }

    .badge.hot {
      background: var(--accent-soft);
      color: #b45309;
      border-color: #fed7aa;
    }

    .hero {
      padding: 30px 0 66px;
    }

    .hero-stage {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(191, 219, 254, .9);
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.94) 0%, rgba(239,246,255,.96) 46%, rgba(255,255,255,.98) 100%);
      box-shadow: var(--shadow-lg);
    }

    .hero-stage::before {
      content: "";
      position: absolute;
      inset: -120px -90px auto auto;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(37, 99, 235, .22), transparent 64%);
      pointer-events: none;
    }

    .hero-stage::after {
      content: "";
      position: absolute;
      inset: auto auto -150px -100px;
      width: 380px;
      height: 380px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(14, 165, 233, .16), transparent 66%);
      pointer-events: none;
    }

    .hero-top {
      position: relative;
      z-index: 1;
      padding: clamp(28px, 5vw, 62px);
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      gap: 34px;
      align-items: center;
    }

    .hero-copy {
      max-width: 650px;
    }

    .hero-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 13px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--border-strong);
      box-shadow: var(--shadow-sm);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 18px;
    }

    .hero h1 {
      margin: 0;
      color: var(--text-strong);
      font-size: clamp(36px, 5.2vw, 66px);
      line-height: 1.03;
      letter-spacing: -.065em;
    }

    .hero-intro {
      margin: 20px 0 0;
      color: #475569;
      font-size: clamp(16px, 1.6vw, 19px);
      max-width: 610px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 28px;
    }

    .metric {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255,255,255,.78);
      border: 1px solid var(--border);
    }

    .metric strong {
      display: block;
      font-size: 22px;
      line-height: 1.15;
      color: var(--text-strong);
    }

    .metric span {
      display: block;
      margin-top: 4px;
      font-size: 12px;
      font-weight: 800;
      color: var(--muted);
    }

    .hero-plans {
      display: grid;
      grid-template-columns: .86fr 1.1fr;
      grid-template-rows: auto auto;
      gap: 14px;
      align-items: stretch;
    }

    .choice-card {
      position: relative;
      border-radius: 24px;
      padding: 20px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.86);
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .choice-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-strong);
    }

    .choice-card.recommended {
      grid-row: span 2;
      padding: 24px;
      background: linear-gradient(180deg, #ffffff 0%, #eef6ff 100%);
      border: 2px solid rgba(37, 99, 235, .42);
      box-shadow: 0 26px 56px rgba(37, 99, 235, .22);
    }

    .choice-card h3 {
      margin: 12px 0 6px;
      font-size: 20px;
      line-height: 1.22;
      color: var(--text-strong);
    }

    .choice-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .choice-price {
      margin-top: 20px;
      display: flex;
      align-items: end;
      gap: 6px;
      color: var(--primary-dark);
    }

    .choice-price strong {
      font-size: 38px;
      line-height: 1;
      letter-spacing: -.06em;
    }

    .choice-list {
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .choice-list li {
      display: flex;
      gap: 8px;
      color: #334155;
      font-size: 14px;
    }

    .choice-list li::before {
      content: "✓";
      color: var(--success);
      font-weight: 900;
    }

    .hero-strip {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      border-top: 1px solid var(--border);
      background: rgba(255,255,255,.52);
    }

    .strip-item {
      padding: 22px clamp(18px, 3vw, 34px);
      border-right: 1px solid var(--border);
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }

    .strip-item:last-child {
      border-right: 0;
    }

    .strip-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      font-weight: 900;
    }

    .strip-item strong {
      display: block;
      color: var(--text-strong);
      margin-bottom: 3px;
    }

    .strip-item span {
      color: var(--muted);
      font-size: 14px;
    }

    .table-card {
      overflow: hidden;
      border-radius: 26px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-md);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 760px;
    }

    .compare-table th,
    .compare-table td {
      padding: 18px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border);
      vertical-align: top;
    }

    .compare-table th {
      background: #f1f7ff;
      color: var(--text-strong);
      font-size: 14px;
      letter-spacing: .02em;
    }

    .compare-table tr:last-child td {
      border-bottom: 0;
    }

    .compare-table td {
      color: #475569;
      font-size: 15px;
    }

    .compare-table .good {
      background: linear-gradient(90deg, rgba(219,234,254,.62), rgba(255,255,255,.78));
      color: var(--primary-dark);
      font-weight: 900;
    }

    .compare-table .warn {
      color: #9a3412;
    }

    .compare-table .no {
      color: #991b1b;
    }

    .table-scroll {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .plans-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      align-items: stretch;
    }

    .plan-card {
      position: relative;
      padding: 24px;
      border-radius: 26px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      min-height: 100%;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .plan-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-strong);
    }

    .plan-card.featured {
      border: 2px solid rgba(37, 99, 235, .45);
      box-shadow: 0 24px 56px rgba(37, 99, 235, .18);
      background: linear-gradient(180deg, #fff 0%, #eff6ff 100%);
    }

    .plan-card h3 {
      margin: 14px 0 8px;
      font-size: 24px;
      color: var(--text-strong);
      letter-spacing: -.03em;
    }

    .plan-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .plan-price {
      margin: 20px 0;
      color: var(--text-strong);
    }

    .plan-price strong {
      font-size: 42px;
      line-height: 1;
      letter-spacing: -.06em;
    }

    .plan-price span {
      color: var(--muted);
      font-weight: 700;
      margin-left: 3px;
    }

    .plan-features {
      margin: 0 0 22px;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 11px;
    }

    .plan-features li {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      color: #334155;
      font-size: 14px;
    }

    .plan-features li::before {
      content: "";
      width: 18px;
      height: 18px;
      margin-top: 2px;
      border-radius: 50%;
      background: var(--primary-soft);
      flex: 0 0 auto;
      box-shadow: inset 0 0 0 5px #fff;
      border: 1px solid var(--primary);
    }

    .plan-card .btn {
      margin-top: auto;
      width: 100%;
    }

    .coupon-wall {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 22px;
      align-items: stretch;
    }

    .coupon-main {
      border-radius: 30px;
      padding: 28px;
      background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 52%, #38bdf8 100%);
      color: #fff;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .coupon-main::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -90px;
      width: 250px;
      height: 250px;
      border-radius: 50%;
      background: rgba(255,255,255,.18);
    }

    .coupon-main h2 {
      margin: 16px 0 10px;
      font-size: clamp(28px, 3vw, 42px);
      line-height: 1.12;
      letter-spacing: -.04em;
    }

    .coupon-main p {
      margin: 0;
      color: rgba(255,255,255,.82);
    }

    .coupon-code {
      position: relative;
      z-index: 1;
      margin-top: 28px;
      padding: 18px;
      border-radius: 22px;
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.26);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .coupon-code strong {
      font-size: 22px;
      letter-spacing: .04em;
    }

    .coupon-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .coupon {
      position: relative;
      border-radius: 22px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-sm);
      padding: 18px 18px 18px 22px;
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .coupon::before,
    .coupon::after {
      content: "";
      position: absolute;
      right: 64px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--bg);
      border: 1px solid var(--border);
    }

    .coupon::before {
      top: -10px;
    }

    .coupon::after {
      bottom: -10px;
    }

    .coupon:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-strong);
    }

    .coupon small {
      display: inline-flex;
      padding: 4px 9px;
      border-radius: 999px;
      background: var(--surface-soft);
      color: var(--primary-dark);
      font-weight: 900;
    }

    .coupon h3 {
      margin: 12px 0 6px;
      font-size: 18px;
      color: var(--text-strong);
    }

    .coupon p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .rules-wrap {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 22px;
      align-items: stretch;
    }

    .rules-card,
    .demo-card {
      border: 1px solid var(--border);
      border-radius: 28px;
      background: #fff;
      box-shadow: var(--shadow-sm);
      padding: 26px;
    }

    .rules-list {
      list-style: none;
      margin: 20px 0 0;
      padding: 0;
      display: grid;
      gap: 14px;
      counter-reset: step;
    }

    .rules-list li {
      counter-increment: step;
      display: grid;
      grid-template-columns: 36px 1fr;
      gap: 12px;
      align-items: start;
      color: #475569;
    }

    .rules-list li::before {
      content: counter(step);
      width: 36px;
      height: 36px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
    }

    .demo-panel {
      margin-top: 20px;
      display: grid;
      gap: 12px;
    }

    .demo-row {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 14px;
      border-radius: 18px;
      background: #f8fbff;
      border: 1px solid var(--border);
    }

    .demo-row strong {
      color: var(--text-strong);
      font-size: 14px;
    }

    .progress {
      height: 10px;
      border-radius: 999px;
      background: #e2e8f0;
      overflow: hidden;
    }

    .progress span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--primary), #38bdf8);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr);
      gap: 22px;
      align-items: start;
    }

    .news-list,
    .recommend-box {
      border-radius: 28px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .news-list ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .news-item a {
      display: grid;
      grid-template-columns: 112px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
      transition: background var(--transition), color var(--transition);
    }

    .news-item:last-child a {
      border-bottom: 0;
    }

    .news-item a:hover,
    .news-item a:focus {
      background: #f8fbff;
      color: var(--primary-dark);
      outline: none;
    }

    .news-date {
      color: var(--muted);
      font-size: 13px;
      font-weight: 900;
    }

    .news-title {
      font-weight: 900;
      color: var(--text-strong);
      line-height: 1.4;
    }

    .news-more {
      color: var(--primary);
      font-weight: 900;
    }

    .recommend-box {
      padding: 22px;
    }

    .recommend-box h3 {
      margin: 0 0 12px;
      font-size: 20px;
      color: var(--text-strong);
    }

    .quick-links {
      display: grid;
      gap: 10px;
    }

    .quick-links a {
      padding: 13px 14px;
      border-radius: 16px;
      border: 1px solid var(--border);
      background: #f8fbff;
      color: #334155;
      font-weight: 800;
      transition: background var(--transition), border-color var(--transition), transform var(--transition);
    }

    .quick-links a:hover,
    .quick-links a:focus {
      background: #fff;
      border-color: var(--border-strong);
      transform: translateX(3px);
      outline: none;
      color: var(--primary-dark);
    }

    .open-card {
      position: relative;
      overflow: hidden;
      border-radius: 34px;
      background:
        linear-gradient(135deg, #0f172a 0%, #1e3a8a 54%, #2563eb 100%);
      color: #fff;
      box-shadow: var(--shadow-lg);
      padding: clamp(28px, 5vw, 54px);
      display: grid;
      grid-template-columns: 1fr .88fr;
      gap: 34px;
      align-items: center;
    }

    .open-card::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -90px;
      width: 310px;
      height: 310px;
      border-radius: 50%;
      background: rgba(56, 189, 248, .24);
    }

    .open-card h2 {
      position: relative;
      margin: 0;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.12;
      letter-spacing: -.05em;
    }

    .open-card p {
      position: relative;
      margin: 14px 0 0;
      color: rgba(255,255,255,.78);
      max-width: 640px;
    }

    .proof-row {
      position: relative;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 24px;
    }

    .proof {
      padding: 13px;
      border-radius: 18px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
    }

    .proof strong {
      display: block;
      font-size: 20px;
      line-height: 1.1;
    }

    .proof span {
      display: block;
      margin-top: 5px;
      color: rgba(255,255,255,.72);
      font-size: 12px;
      font-weight: 800;
    }

    .signup {
      position: relative;
      padding: 22px;
      border-radius: 26px;
      background: rgba(255,255,255,.96);
      color: var(--text);
      box-shadow: 0 20px 50px rgba(2, 6, 23, .22);
    }

    .signup label {
      display: block;
      color: var(--text-strong);
      font-weight: 900;
      margin-bottom: 8px;
    }

    .signup input {
      width: 100%;
      height: 48px;
      border-radius: 16px;
      border: 1px solid var(--border);
      padding: 0 14px;
      outline: none;
      background: #fff;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .signup input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .13);
    }

    .signup .btn {
      width: 100%;
      margin-top: 12px;
    }

    .form-note {
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 13px;
    }

    .form-message {
      min-height: 22px;
      margin-top: 10px;
      color: var(--success);
      font-weight: 800;
      font-size: 13px;
    }

    .faq-grid {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border-radius: 22px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 20px 22px;
      font-weight: 900;
      color: var(--text-strong);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      transition: color var(--transition), background var(--transition);
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--surface-soft);
      color: var(--primary);
      flex: 0 0 auto;
      font-size: 20px;
      line-height: 1;
      transition: transform var(--transition), background var(--transition);
    }

    .faq-item[open] summary {
      color: var(--primary-dark);
      background: #f8fbff;
    }

    .faq-item[open] summary::after {
      content: "−";
      transform: rotate(180deg);
      background: var(--primary);
      color: #fff;
    }

    .faq-answer {
      padding: 0 22px 22px;
      color: var(--muted);
    }

    .faq-answer p {
      margin: 0;
    }

    .site-footer {
      margin-left: var(--sidebar);
      padding: 36px 0 98px;
      border-top: 1px solid var(--border);
      background: rgba(255,255,255,.72);
    }

    .footer-inner {
      width: min(100% - 48px, var(--container));
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .footer-brand strong {
      display: block;
      color: var(--text-strong);
      font-size: 16px;
    }

    .footer-brand span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      margin-top: 2px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 12px;
      color: var(--muted);
      font-size: 13px;
    }

    .footer-links a,
    .footer-links span {
      padding: 7px 10px;
      border-radius: 999px;
    }

    .footer-links a:hover,
    .footer-links a:focus {
      background: var(--surface-soft);
      color: var(--primary-dark);
      outline: none;
    }

    .bottom-bar {
      position: fixed;
      left: calc(var(--sidebar) + 24px);
      right: 24px;
      bottom: 18px;
      z-index: 70;
      padding: 12px;
      border-radius: 24px;
      background: rgba(255,255,255,.9);
      backdrop-filter: blur(18px);
      border: 1px solid var(--border-strong);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .bottom-bar strong {
      display: block;
      color: var(--text-strong);
      line-height: 1.25;
    }

    .bottom-bar span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      margin-top: 2px;
    }

    .bottom-actions {
      display: flex;
      gap: 10px;
      align-items: center;
    }

    .overlay {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 85;
      background: rgba(15, 23, 42, .35);
      opacity: 0;
      transition: opacity var(--transition);
    }

    body.menu-open .overlay {
      opacity: 1;
    }

    @media (max-width: 1180px) {
      :root {
        --sidebar: 246px;
      }

      .hero-top,
      .open-card {
        grid-template-columns: 1fr;
      }

      .hero-plans {
        max-width: 760px;
      }

      .coupon-wall,
      .rules-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 1024px) {
      .section {
        padding: 58px 0;
      }

      .hero-strip {
        grid-template-columns: 1fr;
      }

      .strip-item {
        border-right: 0;
        border-bottom: 1px solid var(--border);
      }

      .strip-item:last-child {
        border-bottom: 0;
      }

      .plans-grid {
        grid-template-columns: 1fr;
      }

      .news-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      body {
        padding-top: 0;
      }

      .mobile-header {
        display: flex;
      }

      .sidebar {
        transform: translateX(-104%);
        transition: transform var(--transition);
        width: min(86vw, 310px);
      }

      body.menu-open .sidebar {
        transform: translateX(0);
      }

      .overlay {
        display: block;
        pointer-events: none;
      }

      body.menu-open .overlay {
        pointer-events: auto;
      }

      .page,
      .site-footer {
        margin-left: 0;
      }

      .container,
      .footer-inner {
        width: min(100% - 30px, var(--container));
      }

      .hero {
        padding-top: 18px;
      }

      .hero-top {
        padding: 24px;
      }

      .hero h1 {
        font-size: clamp(34px, 10vw, 48px);
      }

      .hero-plans {
        grid-template-columns: 1fr;
      }

      .choice-card.recommended {
        grid-row: auto;
      }

      .hero-metrics,
      .proof-row,
      .coupon-grid {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

      .news-item a {
        grid-template-columns: 1fr;
        gap: 6px;
      }

      .news-more {
        display: none;
      }

      .demo-row {
        grid-template-columns: 1fr;
      }

      .footer-inner {
        grid-template-columns: 1fr;
      }

      .footer-links {
        justify-content: flex-start;
      }

      .bottom-bar {
        left: 12px;
        right: 12px;
        bottom: 12px;
        align-items: stretch;
        flex-direction: column;
      }

      .bottom-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
      }

      .bottom-actions .btn {
        width: 100%;
        padding-inline: 12px;
      }
    }

    @media (max-width: 520px) {
      .section {
        padding: 48px 0;
      }

      .hero-stage,
      .open-card {
        border-radius: 24px;
      }

      .hero-actions,
      .bottom-actions {
        grid-template-columns: 1fr;
        display: grid;
      }

      .hero-actions .btn,
      .bottom-actions .btn {
        width: 100%;
      }

      .coupon-code {
        display: block;
      }

      .coupon-code .btn {
        width: 100%;
        margin-top: 12px;
      }

      .plan-card,
      .rules-card,
      .demo-card,
      .recommend-box {
        padding: 20px;
      }

      .compare-table {
        min-width: 680px;
      }
    }