/* roulang page: index */
:root {
      --bg: #f7f4ff;
      --bg-soft: #fff9f1;
      --surface: #ffffff;
      --surface-strong: #fffdf9;
      --primary: #6d3df5;
      --primary-dark: #4321a9;
      --primary-soft: #efe8ff;
      --accent: #ff7a45;
      --accent-2: #ffd166;
      --cyan: #18b7c8;
      --text: #1d1932;
      --text-soft: #5d5872;
      --muted: #8b86a3;
      --border: rgba(77, 61, 126, .14);
      --shadow-sm: 0 8px 24px rgba(39, 26, 88, .08);
      --shadow-md: 0 18px 48px rgba(40, 24, 95, .13);
      --shadow-lg: 0 28px 80px rgba(40, 24, 95, .2);
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 30px;
      --radius-xl: 42px;
      --container: 1180px;
      --header-h: 78px;
      --ease: cubic-bezier(.22, 1, .36, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

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

    body {
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(255, 122, 69, .18), transparent 30%),
        radial-gradient(circle at 85% 10%, rgba(109, 61, 245, .22), transparent 32%),
        linear-gradient(180deg, #fbf8ff 0%, var(--bg) 42%, #fffaf2 100%);
      line-height: 1.7;
      padding-bottom: 86px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
    }

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

    button, input, select, textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    input, select, textarea {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: rgba(255, 255, 255, .92);
      color: var(--text);
      outline: none;
      padding: 13px 14px;
      transition: border .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
    }

    input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible {
      outline: 3px solid rgba(255, 122, 69, .28);
      outline-offset: 3px;
    }

    input:focus, select:focus, textarea:focus {
      border-color: rgba(109, 61, 245, .62);
      box-shadow: 0 0 0 4px rgba(109, 61, 245, .1);
      background: #fff;
    }

    ::selection {
      background: rgba(109, 61, 245, .2);
      color: var(--primary-dark);
    }

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: rgba(255, 255, 255, .82);
      border-bottom: 1px solid rgba(77, 61, 126, .1);
      box-shadow: 0 8px 26px rgba(39, 26, 88, .06);
    }

    .nav {
      height: var(--header-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: -.03em;
      font-size: 22px;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary) 0%, #9d5cff 52%, var(--accent) 100%);
      box-shadow: 0 14px 28px rgba(109, 61, 245, .25);
      position: relative;
      overflow: hidden;
    }

    .brand-mark::after {
      content: "";
      width: 16px;
      height: 16px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .9);
      clip-path: polygon(18% 10%, 92% 50%, 18% 90%);
    }

    .nav-main {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 7px;
      background: rgba(109, 61, 245, .07);
      border: 1px solid rgba(109, 61, 245, .1);
      border-radius: 999px;
    }

    .nav-link {
      padding: 9px 18px;
      border-radius: 999px;
      color: var(--text-soft);
      font-weight: 700;
      font-size: 15px;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--primary-dark);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .nav-side {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .location-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 42px;
      padding: 9px 14px;
      border-radius: 999px;
      border: 1px solid rgba(109, 61, 245, .16);
      background: rgba(255, 255, 255, .72);
      color: var(--text-soft);
      font-weight: 700;
      box-shadow: 0 8px 20px rgba(39, 26, 88, .06);
      white-space: nowrap;
    }

    .location-pill span:first-child {
      width: 24px;
      height: 24px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary), #8c4cf8);
      color: #fff;
      font-weight: 800;
      box-shadow: 0 14px 28px rgba(109, 61, 245, .24);
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(109, 61, 245, .3);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: #fff;
      border: 1px solid var(--border);
      color: var(--primary-dark);
      box-shadow: var(--shadow-sm);
    }

    .menu-toggle i,
    .menu-toggle i::before,
    .menu-toggle i::after {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 4px;
      background: currentColor;
      margin: 0 auto;
      position: relative;
      transition: transform .2s var(--ease), opacity .2s var(--ease);
    }

    .menu-toggle i::before,
    .menu-toggle i::after {
      content: "";
      position: absolute;
      left: 0;
    }

    .menu-toggle i::before { top: -6px; }
    .menu-toggle i::after { top: 6px; }

    .menu-toggle.is-open i { background: transparent; }
    .menu-toggle.is-open i::before { transform: translateY(6px) rotate(45deg); }
    .menu-toggle.is-open i::after { transform: translateY(-6px) rotate(-45deg); }

    main {
      overflow: hidden;
    }

    .section {
      padding: 92px 0;
      position: relative;
    }

    .section.band {
      background: linear-gradient(135deg, rgba(255,255,255,.74), rgba(255,249,241,.82));
      border-top: 1px solid rgba(77, 61, 126, .08);
      border-bottom: 1px solid rgba(77, 61, 126, .08);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(109, 61, 245, .1);
      border: 1px solid rgba(109, 61, 245, .13);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .02em;
      margin-bottom: 14px;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(255, 122, 69, .14);
    }

    h1, h2, h3 {
      line-height: 1.18;
      color: var(--text);
      letter-spacing: -.045em;
    }

    h1 {
      font-size: clamp(38px, 6vw, 68px);
      max-width: 980px;
      margin-bottom: 20px;
    }

    h2 {
      font-size: clamp(28px, 3.6vw, 46px);
      margin-bottom: 16px;
    }

    h3 {
      font-size: 21px;
      margin-bottom: 10px;
      letter-spacing: -.025em;
    }

    p {
      color: var(--text-soft);
    }

    .lead {
      font-size: 18px;
      max-width: 760px;
    }

    .hero {
      padding: 56px 0 86px;
      position: relative;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0 0 auto 0;
      height: 76%;
      background:
        linear-gradient(120deg, rgba(109,61,245,.12), rgba(255,122,69,.12)),
        linear-gradient(135deg, rgba(255,255,255,.74), rgba(255,255,255,.22));
      clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
      pointer-events: none;
    }

    .hero-shell {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(360px, .72fr);
      gap: 34px;
      align-items: stretch;
      padding: 34px;
      border-radius: var(--radius-xl);
      background: rgba(255, 255, 255, .76);
      border: 1px solid rgba(255, 255, 255, .78);
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(12px);
      overflow: hidden;
    }

    .hero-shell::after {
      content: "";
      position: absolute;
      right: -180px;
      top: -120px;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255,122,69,.24), transparent 68%);
      pointer-events: none;
    }

    .hero-copy {
      padding: 26px 10px 18px 12px;
      position: relative;
      z-index: 1;
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 28px 0 30px;
    }

    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(77, 61, 126, .12);
      box-shadow: var(--shadow-sm);
      font-weight: 800;
      color: var(--text);
    }

    .data-badge strong {
      color: var(--primary);
      font-size: 20px;
      letter-spacing: -.03em;
    }

    .hero-actions,
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 50px;
      padding: 0 22px;
      border-radius: 999px;
      font-weight: 900;
      border: 1px solid transparent;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #a059ff 58%, var(--accent));
      box-shadow: 0 18px 38px rgba(109, 61, 245, .26);
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 22px 50px rgba(109, 61, 245, .34);
    }

    .btn-secondary {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(109, 61, 245, .16);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      transform: translateY(-3px);
      border-color: rgba(109, 61, 245, .32);
      box-shadow: var(--shadow-md);
    }

    .btn-ghost {
      min-height: 44px;
      padding: 0 16px;
      color: var(--text-soft);
      background: rgba(255,255,255,.55);
      border-color: rgba(77, 61, 126, .12);
    }

    .btn-ghost:hover {
      color: var(--primary-dark);
      background: #fff;
      transform: translateY(-2px);
    }

    .whitepaper {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: .86fr 1fr;
      gap: 16px;
      padding: 18px;
      border-radius: 32px;
      background: linear-gradient(145deg, rgba(67,33,169,.96), rgba(109,61,245,.92));
      color: #fff;
      box-shadow: 0 28px 70px rgba(67, 33, 169, .28);
      overflow: hidden;
    }

    .whitepaper::before {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      right: -80px;
      top: -80px;
      border-radius: 50%;
      background: rgba(255, 209, 102, .23);
    }

    .cover-art {
      min-height: 420px;
      border-radius: 24px;
      background:
        radial-gradient(circle at 70% 18%, rgba(255,255,255,.32), transparent 23%),
        linear-gradient(160deg, rgba(255,255,255,.2), rgba(255,255,255,.05)),
        linear-gradient(145deg, #ff7a45, #ffd166 48%, #ffffff 49%, #efe8ff 100%);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      color: #201443;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.46);
    }

    .cover-kicker {
      display: inline-flex;
      align-self: flex-start;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.74);
      font-size: 12px;
      font-weight: 900;
      color: var(--primary-dark);
    }

    .cover-title {
      font-size: 28px;
      font-weight: 950;
      line-height: 1.12;
      letter-spacing: -.06em;
    }

    .cover-foot {
      font-size: 13px;
      color: rgba(32,20,67,.72);
      font-weight: 800;
    }

    .paper-content {
      position: relative;
      z-index: 1;
      padding: 8px 2px 2px;
    }

    .paper-content h2 {
      color: #fff;
      font-size: 26px;
      margin-bottom: 8px;
    }

    .paper-content p {
      color: rgba(255,255,255,.76);
      font-size: 14px;
      margin-bottom: 14px;
    }

    .toc {
      display: grid;
      gap: 10px;
      margin: 16px 0;
      list-style: none;
    }

    .toc li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 10px;
      border-radius: 14px;
      background: rgba(255,255,255,.1);
      color: rgba(255,255,255,.9);
      font-size: 14px;
    }

    .toc b {
      color: var(--accent-2);
    }

    .lead-form {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .lead-form input,
    .lead-form select {
      min-height: 44px;
      border-color: rgba(255,255,255,.22);
      background: rgba(255,255,255,.13);
      color: #fff;
      padding: 11px 12px;
    }

    .lead-form input::placeholder {
      color: rgba(255,255,255,.6);
    }

    .lead-form select option {
      color: var(--text);
    }

    .lead-form .btn {
      width: 100%;
      min-height: 46px;
      color: #241441;
      background: linear-gradient(135deg, #fff, var(--accent-2));
      box-shadow: 0 18px 34px rgba(0,0,0,.16);
    }

    .form-note {
      font-size: 12px;
      color: rgba(255,255,255,.62);
      line-height: 1.5;
    }

    .form-message {
      display: none;
      padding: 10px 12px;
      border-radius: 14px;
      background: rgba(24, 183, 200, .18);
      color: #eaffff;
      font-size: 13px;
      border: 1px solid rgba(255,255,255,.18);
    }

    .form-message.show {
      display: block;
    }

    .comparison-wrap {
      overflow: auto;
      border-radius: 28px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      background: #fff;
    }

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

    .compare-table th,
    .compare-table td {
      padding: 20px 22px;
      text-align: left;
      border-bottom: 1px solid rgba(77, 61, 126, .1);
      vertical-align: top;
    }

    .compare-table th {
      background: linear-gradient(135deg, rgba(109,61,245,.1), rgba(255,122,69,.08));
      color: var(--primary-dark);
      font-size: 15px;
      letter-spacing: -.01em;
    }

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

    .compare-table td:first-child {
      font-weight: 900;
      color: var(--text);
      width: 22%;
    }

    .check-list {
      list-style: none;
      display: grid;
      gap: 8px;
    }

    .check-list li {
      position: relative;
      padding-left: 24px;
      color: var(--text-soft);
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--cyan);
      font-weight: 950;
    }

    .muted-list li::before {
      content: "•";
      color: var(--muted);
    }

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

    .plan-card {
      position: relative;
      display: flex;
      flex-direction: column;
      padding: 28px;
      border-radius: 30px;
      background: rgba(255,255,255,.86);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
      overflow: hidden;
    }

    .plan-card:hover {
      transform: translateY(-7px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(109,61,245,.24);
    }

    .plan-card.featured {
      background:
        radial-gradient(circle at 85% 18%, rgba(255,122,69,.2), transparent 28%),
        linear-gradient(145deg, #fff, #f8f3ff);
      border: 2px solid rgba(109, 61, 245, .35);
      transform: translateY(-8px);
    }

    .plan-card.featured:hover {
      transform: translateY(-12px);
    }

    .ribbon {
      position: absolute;
      right: 20px;
      top: 20px;
      padding: 7px 10px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--accent), #ffb347);
      color: #fff;
      font-size: 12px;
      font-weight: 950;
      box-shadow: 0 10px 22px rgba(255,122,69,.22);
    }

    .plan-label {
      display: inline-flex;
      width: fit-content;
      padding: 7px 10px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .price {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin: 14px 0 16px;
      color: var(--text);
    }

    .price strong {
      font-size: 38px;
      letter-spacing: -.06em;
      color: var(--primary);
    }

    .price span {
      color: var(--muted);
      font-weight: 700;
    }

    .plan-card ul {
      list-style: none;
      display: grid;
      gap: 10px;
      margin: 18px 0 24px;
      flex: 1;
    }

    .plan-card li {
      position: relative;
      padding-left: 25px;
      color: var(--text-soft);
      font-size: 15px;
    }

    .plan-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .55em;
      width: 10px;
      height: 10px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--cyan), var(--primary));
    }

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

    .assurance-strip {
      display: grid;
      grid-template-columns: 1.05fr repeat(4, 1fr);
      gap: 14px;
      align-items: stretch;
    }

    .assurance-intro {
      padding: 28px;
      border-radius: 30px;
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      color: #fff;
      box-shadow: var(--shadow-md);
    }

    .assurance-intro h2 {
      color: #fff;
      font-size: 32px;
    }

    .assurance-intro p {
      color: rgba(255,255,255,.75);
    }

    .assurance-card {
      padding: 24px;
      border-radius: 26px;
      background: rgba(255,255,255,.82);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: transform .2s var(--ease), box-shadow .2s var(--ease);
    }

    .assurance-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .icon-dot {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      margin-bottom: 15px;
      color: #fff;
      background: linear-gradient(135deg, var(--accent), var(--primary));
      box-shadow: 0 14px 26px rgba(109,61,245,.2);
      font-size: 22px;
    }

    .proof-layout {
      display: grid;
      grid-template-columns: .72fr 1fr;
      gap: 24px;
      align-items: start;
    }

    .proof-panel {
      padding: 30px;
      border-radius: 32px;
      background:
        radial-gradient(circle at 20% 15%, rgba(255,209,102,.24), transparent 35%),
        linear-gradient(145deg, rgba(255,255,255,.9), rgba(239,232,255,.76));
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
    }

    .rating {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 18px 0;
      color: #f5a400;
      font-size: 22px;
      font-weight: 950;
    }

    .quote {
      padding: 18px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid rgba(77,61,126,.09);
      color: var(--text-soft);
    }

    .proof-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }

    .proof-card {
      padding: 24px;
      min-height: 150px;
      border-radius: 26px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .proof-number {
      display: block;
      font-size: 32px;
      font-weight: 950;
      color: var(--primary);
      letter-spacing: -.06em;
      margin-bottom: 6px;
    }

    .logo-wall {
      grid-column: 1 / -1;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-top: 2px;
    }

    .logo-pill {
      padding: 15px 12px;
      border-radius: 20px;
      background: rgba(255,255,255,.78);
      border: 1px dashed rgba(109,61,245,.24);
      color: var(--text-soft);
      text-align: center;
      font-weight: 850;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 24px;
      align-items: start;
    }

    .news-list {
      border-radius: 30px;
      background: rgba(255,255,255,.88);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .news-item {
      display: grid;
      grid-template-columns: 110px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 22px 24px;
      border-bottom: 1px solid rgba(77,61,126,.09);
    }

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

    .news-item:hover {
      background: rgba(109,61,245,.05);
    }

    .news-date {
      color: var(--primary);
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .news-item h3 {
      font-size: 18px;
      margin-bottom: 5px;
    }

    .news-item p {
      font-size: 14px;
    }

    .arrow {
      width: 38px;
      height: 38px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 950;
    }

    .news-item:hover .arrow {
      background: var(--primary);
      color: #fff;
      transform: translateX(3px);
    }

    .recommend-side {
      position: sticky;
      top: 104px;
      padding: 26px;
      border-radius: 30px;
      background:
        linear-gradient(145deg, rgba(29,25,50,.96), rgba(67,33,169,.92)),
        var(--primary-dark);
      color: #fff;
      box-shadow: var(--shadow-lg);
    }

    .recommend-side h3 {
      color: #fff;
      font-size: 24px;
    }

    .recommend-side p {
      color: rgba(255,255,255,.74);
      margin-bottom: 16px;
    }

    .mini-list {
      list-style: none;
      display: grid;
      gap: 10px;
      margin-bottom: 20px;
    }

    .mini-list li {
      padding: 12px 14px;
      border-radius: 16px;
      background: rgba(255,255,255,.1);
      color: rgba(255,255,255,.86);
      font-size: 14px;
    }

    .open-section {
      padding: 76px 0;
    }

    .open-card {
      display: grid;
      grid-template-columns: minmax(0, .95fr) minmax(360px, .65fr);
      gap: 26px;
      align-items: center;
      padding: 38px;
      border-radius: 42px;
      background:
        radial-gradient(circle at 88% 18%, rgba(255,209,102,.25), transparent 32%),
        linear-gradient(135deg, var(--primary-dark), #6d3df5 56%, #ff7a45);
      color: #fff;
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .open-card h2 {
      color: #fff;
    }

    .open-card p {
      color: rgba(255,255,255,.78);
    }

    .open-steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 26px;
    }

    .step {
      padding: 16px;
      border-radius: 20px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.14);
    }

    .step b {
      display: inline-flex;
      width: 28px;
      height: 28px;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      background: rgba(255,255,255,.92);
      color: var(--primary-dark);
      margin-bottom: 10px;
    }

    .step span {
      display: block;
      color: rgba(255,255,255,.84);
      font-size: 14px;
      line-height: 1.55;
    }

    .open-form {
      padding: 24px;
      border-radius: 30px;
      background: rgba(255,255,255,.92);
      border: 1px solid rgba(255,255,255,.5);
      box-shadow: 0 22px 60px rgba(0,0,0,.14);
    }

    .open-form h3 {
      color: var(--text);
    }

    .open-form p {
      margin-bottom: 14px;
      font-size: 14px;
    }

    .open-form form {
      display: grid;
      gap: 12px;
    }

    .open-form .btn {
      width: 100%;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .55fr 1fr;
      gap: 28px;
      align-items: start;
    }

    .faq-note {
      padding: 28px;
      border-radius: 30px;
      background: rgba(255,255,255,.82);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

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

    .faq-item {
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .faq-q {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      padding: 20px 22px;
      background: transparent;
      color: var(--text);
      text-align: left;
      font-weight: 950;
    }

    .faq-q span:first-child {
      line-height: 1.45;
    }

    .faq-q .plus {
      width: 32px;
      height: 32px;
      flex: 0 0 32px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary);
      transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
    }

    .faq-a {
      display: none;
      padding: 0 22px 22px;
      color: var(--text-soft);
    }

    .faq-item.open .faq-a {
      display: block;
    }

    .faq-item.open .plus {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .site-footer {
      padding: 56px 0 34px;
      background: #17122a;
      color: rgba(255,255,255,.78);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr .85fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 22px;
      font-weight: 950;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 14px;
    }

    .footer-title {
      color: #fff;
      font-weight: 950;
      margin-bottom: 12px;
    }

    .footer-links {
      list-style: none;
      display: grid;
      gap: 9px;
    }

    .footer-links a {
      color: rgba(255,255,255,.66);
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.55);
      font-size: 14px;
    }

    .floating-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 60;
      width: min(960px, calc(100% - 28px));
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      padding: 12px 14px 12px 18px;
      border-radius: 999px;
      background: rgba(23, 18, 42, .92);
      color: #fff;
      box-shadow: 0 22px 58px rgba(23,18,42,.3);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,.12);
    }

    .floating-cta strong {
      display: block;
      line-height: 1.25;
    }

    .floating-cta span {
      color: rgba(255,255,255,.66);
      font-size: 13px;
    }

    .floating-cta .btn {
      min-height: 44px;
      padding: 0 18px;
    }

    @media (max-width: 1080px) {
      .hero-shell,
      .open-card {
        grid-template-columns: 1fr;
      }

      .whitepaper {
        grid-template-columns: .78fr 1fr;
      }

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

      .plan-card.featured {
        transform: none;
      }

      .assurance-strip {
        grid-template-columns: repeat(2, 1fr);
      }

      .assurance-intro {
        grid-column: 1 / -1;
      }

      .news-layout,
      .faq-wrap,
      .proof-layout {
        grid-template-columns: 1fr;
      }

      .recommend-side {
        position: relative;
        top: auto;
      }
    }

    @media (max-width: 860px) {
      :root {
        --header-h: auto;
      }

      body {
        padding-bottom: 110px;
      }

      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav {
        min-height: 72px;
        flex-wrap: wrap;
        padding: 12px 0;
      }

      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav-main,
      .nav-side {
        display: none;
        width: 100%;
      }

      .nav-main.is-open,
      .nav-side.is-open {
        display: flex;
      }

      .nav-main {
        justify-content: flex-start;
        border-radius: 20px;
        overflow-x: auto;
      }

      .nav-side {
        align-items: stretch;
        flex-direction: column;
      }

      .nav-cta,
      .location-pill {
        width: 100%;
        justify-content: center;
      }

      .section {
        padding: 70px 0;
      }

      .hero {
        padding-top: 28px;
      }

      .hero-shell {
        padding: 20px;
        border-radius: 30px;
      }

      .hero-copy {
        padding: 10px 0 4px;
      }

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

      .cover-art {
        min-height: 260px;
      }

      .plans-grid,
      .proof-grid,
      .logo-wall {
        grid-template-columns: 1fr;
      }

      .news-item {
        grid-template-columns: 1fr auto;
        gap: 10px;
      }

      .news-date {
        grid-column: 1 / -1;
      }

      .open-steps {
        grid-template-columns: 1fr;
      }

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

      .floating-cta {
        align-items: stretch;
        flex-direction: column;
        border-radius: 24px;
        text-align: center;
      }

      .floating-cta .btn {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 34px;
      }

      h2 {
        font-size: 28px;
      }

      .brand {
        font-size: 19px;
      }

      .hero-points {
        flex-direction: column;
      }

      .data-badge {
        width: 100%;
        justify-content: space-between;
      }

      .hero-actions,
      .cta-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .whitepaper,
      .open-card {
        padding: 16px;
        border-radius: 26px;
      }

      .plan-card,
      .assurance-card,
      .proof-panel,
      .open-form,
      .faq-note {
        padding: 22px;
        border-radius: 24px;
      }

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

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

      .footer-bottom {
        display: grid;
      }
    }