:root {
      --blue: #1769ff;
      --blue-dark: #0c46d9;
      --ink: #111827;
      --muted: #677083;
      --line: #e6ebf2;
      --soft: #f5f8fc;
      --mint: #19c59c;
      --amber: #f6b33f;
      --violet: #7c5cff;
      --radius: 8px;
      font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: #fff;
      line-height: 1.5;
    }

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

    .shell {
      width: min(1160px, calc(100% - 40px));
      margin: 0 auto;
    }

    .nav {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 255, 255, 0.9);
      border-bottom: 1px solid rgba(230, 235, 242, 0.85);
      backdrop-filter: blur(16px);
    }

    .nav-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 22px;
      letter-spacing: 0;
    }

    .brand-logo {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      display: block;
      object-fit: cover;
      box-shadow: 0 12px 24px rgba(23, 105, 255, 0.28);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 30px;
      color: #344054;
      font-size: 15px;
    }

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

    .ghost-btn,
    .primary-btn,
    .icon-btn {
      border: 0;
      border-radius: var(--radius);
      font: inherit;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .ghost-btn {
      height: 40px;
      padding: 0 16px;
      color: var(--blue);
      background: #eef5ff;
      font-weight: 650;
    }

    .primary-btn {
      min-height: 48px;
      padding: 0 22px;
      color: #fff;
      background: var(--blue);
      font-weight: 700;
      box-shadow: 0 16px 28px rgba(23, 105, 255, 0.28);
    }

    .primary-btn:hover,
    .ghost-btn:hover,
    .icon-btn:hover {
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      background: #f2f5fa;
    }

    .mobile-panel {
      display: none;
    }

    .hero {
      position: relative;
      overflow: hidden;
      background: linear-gradient(155deg, #eff6ff 0%, #ffffff 42%, #edf8ff 100%);
    }

    .hero .shell {
      min-height: 720px;
      display: grid;
      grid-template-columns: 1.02fr 0.98fr;
      gap: 58px;
      align-items: center;
      padding: 74px 0 54px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      padding: 8px 12px;
      border: 1px solid #d6e5ff;
      border-radius: 999px;
      color: var(--blue-dark);
      background: rgba(255, 255, 255, 0.8);
      font-size: 14px;
      font-weight: 700;
    }

    .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--mint);
      box-shadow: 0 0 0 6px rgba(25, 197, 156, 0.14);
    }

    h1 {
      margin: 0;
      font-size: clamp(42px, 6vw, 72px);
      line-height: 1.04;
      letter-spacing: 0;
    }

    .lead {
      max-width: 580px;
      margin: 26px 0 34px;
      color: #4e5a70;
      font-size: 20px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .download-btn {
      min-width: 168px;
      min-height: 56px;
      padding: 0 18px;
      border: 1px solid #dce6f5;
      border-radius: var(--radius);
      background: #fff;
      color: #1f2937;
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 750;
      box-shadow: 0 12px 28px rgba(20, 41, 82, 0.08);
    }

    .download-btn svg {
      width: 24px;
      height: 24px;
      color: var(--blue);
    }

    .trust-row {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      color: #607089;
      font-size: 14px;
    }

    .trust-row span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .trust-row span::before {
      content: "";
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #e8f5ff;
      border: 5px solid var(--blue);
    }

    .hero-visual {
      position: relative;
      display: grid;
      place-items: center;
      min-height: 570px;
    }

    .halo {
      position: absolute;
      width: 490px;
      height: 490px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(23, 105, 255, 0.18), rgba(23, 105, 255, 0) 68%);
    }

    .phone {
      position: relative;
      width: min(330px, 74vw);
      height: 650px;
      border: 12px solid #111722;
      border-radius: 38px;
      background: #f8fbff;
      box-shadow: 0 44px 72px rgba(18, 38, 73, 0.28);
      overflow: hidden;
    }

    .notch {
      position: absolute;
      top: 13px;
      left: 50%;
      width: 96px;
      height: 24px;
      transform: translateX(-50%);
      border-radius: 0 0 16px 16px;
      background: #111722;
      z-index: 2;
    }

    .phone-screen {
      padding: 54px 22px 22px;
    }

    .wallet-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 22px;
    }

    .avatar {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: linear-gradient(145deg, var(--blue), #13d7d1);
    }

    .chip {
      padding: 7px 10px;
      border-radius: 999px;
      color: #1254d4;
      background: #eaf2ff;
      font-size: 12px;
      font-weight: 800;
    }

    .balance-card {
      padding: 22px;
      border-radius: 22px;
      color: #fff;
      background: linear-gradient(145deg, #1769ff, #11b9e4);
      box-shadow: 0 24px 46px rgba(23, 105, 255, 0.35);
    }

    .balance-card small,
    .asset small {
      opacity: 0.78;
      font-weight: 650;
    }

    .balance-card strong {
      display: block;
      margin: 8px 0 18px;
      font-size: 34px;
    }

    .quick {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }

    .quick button {
      border: 0;
      border-radius: 12px;
      padding: 12px 8px;
      color: #fff;
      background: rgba(255, 255, 255, 0.18);
      font-weight: 700;
    }

    .asset-list {
      margin-top: 20px;
      display: grid;
      gap: 12px;
    }

    .asset {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px;
      border: 1px solid #ecf1f7;
      border-radius: 16px;
      background: #fff;
    }

    .coin {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
    }

    .asset-info {
      flex: 1;
    }

    .asset strong {
      display: block;
    }

    .floating-card {
      position: absolute;
      padding: 16px 18px;
      border: 1px solid rgba(222, 231, 244, 0.9);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.92);
      box-shadow: 0 22px 48px rgba(17, 42, 85, 0.16);
      backdrop-filter: blur(12px);
    }

    .floating-card strong {
      display: block;
      margin-bottom: 2px;
    }

    .float-one {
      top: 72px;
      right: 24px;
    }

    .float-two {
      left: 4px;
      bottom: 96px;
    }

    section {
      padding: 88px 0;
    }

    .section-head {
      max-width: 720px;
      margin-bottom: 40px;
    }

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

    h2 {
      margin: 0 0 14px;
      font-size: clamp(30px, 4vw, 46px);
      line-height: 1.12;
      letter-spacing: 0;
    }

    .section-head p {
      margin: 0;
      color: var(--muted);
      font-size: 18px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .feature-card {
      min-height: 250px;
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 18px 42px rgba(18, 34, 64, 0.06);
    }

    .feature-icon {
      width: 52px;
      height: 52px;
      margin-bottom: 28px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
    }

    .feature-icon svg {
      width: 27px;
      height: 27px;
    }

    .feature-card h3,
    .security-copy h3,
    .contact-panel h3 {
      margin: 0 0 12px;
      font-size: 22px;
    }

    .feature-card p,
    .security-copy p,
    .contact-panel p,
    .footer p {
      margin: 0;
      color: var(--muted);
    }

    .security {
      background: var(--soft);
    }

    .security-layout {
      display: grid;
      grid-template-columns: 0.95fr 1.05fr;
      gap: 54px;
      align-items: center;
    }

    .device {
      position: relative;
      min-height: 430px;
      display: grid;
      place-items: center;
    }

    .device-body {
      width: min(420px, 86vw);
      height: 240px;
      border-radius: 34px;
      background: linear-gradient(145deg, #202938, #0f1724);
      box-shadow: 0 36px 70px rgba(15, 23, 36, 0.28);
      display: grid;
      grid-template-columns: 1fr 120px;
      align-items: center;
      padding: 34px;
      color: #fff;
    }

    .device-screen {
      height: 124px;
      border-radius: 18px;
      background: #07111f;
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 18px;
    }

    .device-screen div {
      height: 12px;
      margin-bottom: 12px;
      border-radius: 99px;
      background: #1ec7a6;
    }

    .device-screen div:nth-child(2) {
      width: 74%;
      background: #5ca9ff;
    }

    .device-screen div:nth-child(3) {
      width: 52%;
      background: #f3c45b;
    }

    .device-button {
      width: 76px;
      height: 76px;
      margin-left: auto;
      border-radius: 50%;
      border: 10px solid #2c3747;
      background: #121a27;
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    }

    .security-list {
      display: grid;
      gap: 18px;
      margin-top: 30px;
    }

    .security-item {
      display: grid;
      grid-template-columns: 38px 1fr;
      gap: 14px;
      align-items: start;
    }

    .check {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--blue);
      font-weight: 900;
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      background: #fff;
      box-shadow: 0 18px 42px rgba(18, 34, 64, 0.06);
    }

    .stat {
      min-height: 154px;
      padding: 28px;
      border-right: 1px solid var(--line);
    }

    .stat:last-child {
      border-right: 0;
    }

    .stat strong {
      display: block;
      margin-bottom: 8px;
      color: var(--blue);
      font-size: 34px;
    }

    .partners {
      padding-top: 0;
    }

    .logo-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .logo-cell {
      height: 82px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      display: grid;
      place-items: center;
      color: #708096;
      font-weight: 800;
    }

    .faq {
      padding-top: 0;
      background: linear-gradient(180deg, #fff 0%, #f7faff 100%);
    }

    .faq-list {
      display: grid;
      gap: 14px;
      max-width: 880px;
      margin: 0 auto;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: #fff;
      box-shadow: 0 14px 34px rgba(18, 34, 64, 0.05);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 22px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-size: 18px;
      font-weight: 800;
    }

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

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--blue);
      background: #edf5ff;
      font-size: 20px;
      line-height: 1;
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 24px 22px;
      color: var(--muted);
    }

    .contact-band {
      padding: 0 0 92px;
    }

    .contact-panel {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
      padding: 42px;
      border-radius: 12px;
      color: #fff;
      background: linear-gradient(135deg, #145fff, #13a4e8 58%, #1ccaa6);
      box-shadow: 0 24px 54px rgba(23, 105, 255, 0.26);
    }

    .contact-panel p {
      color: rgba(255, 255, 255, 0.8);
    }

    .contact-panel .primary-btn {
      color: var(--blue);
      background: #fff;
      box-shadow: none;
    }

    .footer {
      padding: 54px 0 38px;
      border-top: 1px solid var(--line);
      background: #fbfcfe;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr repeat(3, 1fr);
      gap: 34px;
      margin-bottom: 36px;
    }

    .footer h4 {
      margin: 0 0 16px;
      font-size: 15px;
    }

    .footer a {
      display: block;
      margin: 10px 0;
      color: #647084;
      font-size: 14px;
    }

    .copyright {
      color: #8a95a6;
      font-size: 13px;
    }

    @media (max-width: 940px) {
      .nav-links,
      .nav-actions {
        display: none;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .nav.open .mobile-panel {
        display: grid;
      }

      .mobile-panel {
        display: none;
        gap: 12px;
        padding: 0 20px 20px;
      }

      .mobile-panel a {
        padding: 12px;
        border-radius: var(--radius);
        background: #f5f7fb;
      }

      .hero .shell,
      .security-layout {
        grid-template-columns: 1fr;
      }

      .hero .shell {
        min-height: auto;
        gap: 24px;
        padding-top: 50px;
      }

      .hero-visual {
        min-height: 520px;
      }

      .floating-card {
        display: none;
      }

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

      .stats,
      .logo-grid,
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .stat:nth-child(2) {
        border-right: 0;
      }

      .stat:nth-child(-n + 2) {
        border-bottom: 1px solid var(--line);
      }

      .contact-panel {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 620px) {
      .shell {
        width: min(100% - 28px, 1160px);
      }

      .nav-inner {
        height: 64px;
      }

      .brand {
        font-size: 19px;
      }

      section {
        padding: 62px 0;
      }

      .lead {
        font-size: 17px;
      }

      .download-btn {
        width: 100%;
        justify-content: center;
      }

      .phone {
        height: 575px;
        border-width: 10px;
      }

      .phone-screen {
        padding-inline: 16px;
      }

      .balance-card strong {
        font-size: 28px;
      }

      .feature-grid,
      .stats,
      .logo-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .stat,
      .stat:nth-child(2) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .stat:last-child {
        border-bottom: 0;
      }

      .contact-panel {
        padding: 28px;
      }

      .faq-item summary {
        padding: 18px;
        font-size: 16px;
      }

      .faq-item p {
        padding: 0 18px 18px;
      }
    }