:root {
      --theme: #0B3D91;
      --ink: #162235;
      --muted: #64748b;
      --line: #dbe3ec;
      --surface: #ffffff;
      --soft: #f4f7fa;
      --accent: #168f8b;
      --dark: #102238;
      --shadow: 0 18px 45px rgba(20, 45, 70, .10);
      --radius: 8px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: #f7f9fb;
      font-family: -apple-system, BlinkMacSystemFont, "Noto Sans TC", "Microsoft JhengHei", sans-serif;
      line-height: 1.7;
    }

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

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

    button,
    input {
      font: inherit;
    }

    .container {
      width: min(1180px, calc(100% - 40px));
      margin: 0 auto;
    }

    .topbar {
      background: #0e1c2c;
      color: #dbe7f1;
      font-size: 13px;
    }

    .topbar .container {
      min-height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .topbar-links {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .topbar a {
      color: #dbe7f1;
    }

    .topbar a:hover {
      color: #ffffff;
    }

    .header {
      position: relative;
      z-index: 20;
      background: rgba(255, 255, 255, .97);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 30px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 170px;
      color: var(--dark);
      font-size: 19px;
      font-weight: 800;
      letter-spacing: .02em;
    }

    .logo img {
      width: 34px;
      height: 34px;
      object-fit: contain;
    }

    .main-nav {
      flex: 1;
    }

    .nav-list {
      display: flex;
      align-items: stretch;
      justify-content: center;
      gap: 2px;
      padding: 0;
      margin: 0;
      list-style: none;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      min-height: 78px;
      padding: 0 13px;
      color: #314158;
      font-size: 15px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link:hover,
    .nav-item:focus-within > .nav-link {
      color: var(--theme);
    }

    .has-arrow::after {
      content: "";
      width: 6px;
      height: 6px;
      margin: -3px 0 0 8px;
      border-right: 1px solid currentColor;
      border-bottom: 1px solid currentColor;
      transform: rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      z-index: 30;
      width: 310px;
      padding: 16px;
      visibility: hidden;
      opacity: 0;
      transform: translate(-50%, 8px);
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 0 0 var(--radius) var(--radius);
      box-shadow: var(--shadow);
      transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
    }

    .mega-menu {
      width: min(650px, 80vw);
      padding: 20px;
    }

    .dropdown-panel::before,
    .mega-menu::before {
      content: "";
      position: absolute;
      top: -12px;
      left: 0;
      right: 0;
      height: 12px;
    }

    .nav-item:hover > .dropdown-panel,
    .nav-item:focus-within > .dropdown-panel,
    .nav-item:hover > .mega-menu,
    .nav-item:focus-within > .mega-menu {
      visibility: visible;
      opacity: 1;
      transform: translate(-50%, 0);
    }

    .dropdown-panel > a:not(.mega-footer) {
      display: block;
      padding: 9px 10px;
      border-bottom: 1px solid #edf1f5;
      color: #334155;
      font-size: 14px;
    }

    .dropdown-panel > a:not(.mega-footer):hover,
    .mega-card:hover {
      color: var(--theme);
      background: #f4f8fd;
    }

    .mega-heading {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 12px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .08em;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
      max-height: 420px;
      overflow: auto;
    }

    .mega-card {
      display: grid;
      gap: 3px;
      min-height: 72px;
      padding: 11px;
      border: 1px solid #e7edf3;
      border-radius: 6px;
      color: #25364b;
    }

    .mega-card img {
      width: 22px;
      height: 22px;
      object-fit: contain;
      margin-bottom: 2px;
    }

    .mega-card strong {
      font-size: 14px;
      line-height: 1.4;
    }

    .mega-card small {
      color: var(--muted);
      font-size: 12px;
      line-height: 1.45;
    }

    .mega-footer {
      display: block;
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px solid var(--line);
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 10px;
      white-space: nowrap;
    }

    .member-link,
    .account-link {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 0 13px;
      border-radius: 5px;
      font-size: 13px;
      font-weight: 800;
    }

    .member-link {
      color: var(--theme);
      border: 1px solid #c9d8eb;
    }

    .account-link {
      color: #ffffff;
      background: var(--theme);
    }

    .member-link:hover,
    .account-link:hover {
      filter: brightness(.92);
    }

    .hamburger {
      display: none;
      width: 42px;
      height: 42px;
      padding: 9px;
      border: 1px solid var(--line);
      border-radius: 5px;
      background: #ffffff;
      cursor: pointer;
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      margin: 4px auto;
      background: var(--dark);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 40;
      background: rgba(9, 23, 38, .48);
      visibility: hidden;
      opacity: 0;
      transition: opacity .2s ease, visibility .2s ease;
    }

    .drawer-overlay.open {
      visibility: visible;
      opacity: 1;
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 50;
      width: min(390px, 88vw);
      height: 100vh;
      overflow-y: auto;
      background: #ffffff;
      box-shadow: -18px 0 45px rgba(8, 24, 40, .18);
      transform: translateX(100%);
      transition: transform .25s ease;
    }

    .mobile-drawer.open {
      transform: translateX(0);
    }

    .drawer-head {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 72px;
      padding: 0 20px;
      color: var(--dark);
      border-bottom: 1px solid var(--line);
      font-weight: 800;
    }

    .drawer-head span {
      flex: 1;
    }

    .drawer-head a {
      color: var(--theme);
      font-size: 14px;
    }

    .drawer-close {
      width: 36px;
      height: 36px;
      border: 0;
      background: transparent;
      color: var(--muted);
      font-size: 28px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 10px 20px 30px;
    }

    .drawer-link,
    .drawer-toggle {
      display: flex;
      width: 100%;
      align-items: center;
      justify-content: space-between;
      min-height: 48px;
      padding: 0;
      border: 0;
      border-bottom: 1px solid #edf1f5;
      background: transparent;
      color: var(--ink);
      font-size: 15px;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle::after {
      content: "+";
      color: var(--muted);
      font-size: 20px;
      font-weight: 400;
    }

    .drawer-toggle.active::after {
      content: "−";
    }

    .drawer-submenu {
      display: grid;
      max-height: 0;
      overflow: hidden;
      padding-left: 14px;
      opacity: 0;
      transition: max-height .25s ease, opacity .25s ease;
    }

    .drawer-submenu.open {
      max-height: 520px;
      opacity: 1;
    }

    .drawer-submenu a {
      padding: 8px 0;
      color: var(--muted);
      font-size: 14px;
      border-bottom: 1px solid #f1f4f7;
    }

    .footer {
      margin-top: 80px;
      padding: 54px 0 20px;
      color: #c8d4e0;
      background: #102238;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr 1fr 1fr 1fr;
      gap: 36px;
    }

    .footer h2,
    .footer h3 {
      margin: 0 0 13px;
      color: #ffffff;
    }

    .footer h2 {
      font-size: 21px;
    }

    .footer h3 {
      font-size: 15px;
    }

    .footer p {
      max-width: 300px;
      margin: 0;
      color: #aebdca;
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      gap: 7px;
      padding: 0;
      margin: 0;
      list-style: none;
      color: #b8c7d4;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      margin-top: 38px;
      border-top: 1px solid rgba(217, 230, 240, .16);
      color: #8fa3b5;
      font-size: 12px;
    }

    .about-page {
      overflow: hidden;
    }

    .about-hero {
      position: relative;
      padding: 92px 0 86px;
      color: #ffffff;
      background:
        linear-gradient(120deg, rgba(11, 61, 145, .94), rgba(16, 34, 56, .96)),
        radial-gradient(circle at 78% 18%, rgba(24, 147, 139, .42), transparent 35%);
    }

    .about-hero::after {
      content: "";
      position: absolute;
      right: 8%;
      bottom: -90px;
      width: 310px;
      height: 180px;
      border: 1px solid rgba(255, 255, 255, .18);
      border-radius: 50%;
      box-shadow:
        0 0 0 22px rgba(255, 255, 255, .07),
        0 0 0 45px rgba(255, 255, 255, .055),
        0 0 0 68px rgba(255, 255, 255, .04);
      transform: rotate(-18deg);
    }

    .about-hero-inner {
      position: relative;
      z-index: 1;
      max-width: 760px;
    }

    .eyebrow {
      display: inline-flex;
      margin-bottom: 15px;
      color: #a8dcd7;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .12em;
    }

    .about-hero h1 {
      max-width: 700px;
      margin: 0;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.14;
      letter-spacing: -.02em;
    }

    .about-hero p {
      max-width: 660px;
      margin: 22px 0 0;
      color: #d9e7f2;
      font-size: 18px;
    }

    .about-intro {
      padding: 76px 0 20px;
    }

    .about-intro-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
      gap: 52px;
      align-items: start;
    }

    .about-intro h2,
    .about-section h2 {
      margin: 0 0 17px;
      color: var(--dark);
      font-size: clamp(26px, 3vw, 38px);
      line-height: 1.25;
    }

    .about-intro p {
      margin: 0 0 16px;
      color: #536579;
      font-size: 16px;
    }

    .about-note {
      padding: 26px;
      border-left: 4px solid var(--accent);
      background: #eef6f5;
    }

    .about-note strong {
      display: block;
      margin-bottom: 9px;
      color: var(--dark);
      font-size: 18px;
    }

    .about-note span {
      color: #52706f;
      font-size: 14px;
    }

    .about-section {
      padding: 70px 0 0;
    }

    .section-heading {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 25px;
    }

    .section-heading p {
      max-width: 540px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

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

    .value-card {
      min-height: 225px;
      padding: 27px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-top: 4px solid var(--theme);
      border-radius: var(--radius);
      box-shadow: 0 9px 25px rgba(20, 45, 70, .05);
    }

    .value-index {
      display: block;
      margin-bottom: 32px;
      color: var(--accent);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .1em;
    }

    .value-card h3 {
      margin: 0 0 9px;
      color: var(--dark);
      font-size: 20px;
    }

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

    .trust-band {
      margin-top: 78px;
      padding: 54px 0;
      background: #eaf0f4;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 48px;
      align-items: center;
    }

    .trust-grid h2 {
      margin-bottom: 0;
    }

    .trust-list {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
      padding: 0;
      margin: 0;
      list-style: none;
    }

    .trust-list li {
      position: relative;
      padding: 15px 15px 15px 39px;
      color: #35495e;
      background: #ffffff;
      border: 1px solid #dce5ec;
      border-radius: 6px;
      font-size: 14px;
    }

    .trust-list li::before {
      content: "";
      position: absolute;
      top: 22px;
      left: 17px;
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px #d8eeeb;
    }

    .about-cta {
      padding: 70px 0 0;
    }

    .about-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: 32px 36px;
      color: #ffffff;
      background: var(--theme);
      border-radius: var(--radius);
    }

    .about-cta h2 {
      margin: 0 0 7px;
      color: #ffffff;
      font-size: 26px;
    }

    .about-cta p {
      margin: 0;
      color: #d9e6f4;
      font-size: 14px;
    }

    .cta-link {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 0 17px;
      color: var(--dark);
      background: #ffffff;
      border-radius: 5px;
      font-size: 14px;
      font-weight: 800;
      white-space: nowrap;
    }

    .cta-link:hover {
      background: #e6f1f7;
    }

    @media (max-width: 1050px) {
      .header-inner {
        gap: 18px;
      }

      .nav-link {
        padding: 0 8px;
        font-size: 14px;
      }

      .logo {
        min-width: 145px;
      }

      .member-link {
        display: none;
      }
    }

    @media (max-width: 820px) {
      .container {
        width: min(100% - 32px, 680px);
      }

      .main-nav {
        display: none;
      }

      .header-btns {
        margin-left: auto;
      }

      .hamburger {
        display: block;
      }

      .footer-grid,
      .about-intro-grid,
      .trust-grid {
        grid-template-columns: 1fr;
      }

      .value-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .about-hero {
        padding: 68px 0 72px;
      }

      .about-hero p {
        font-size: 16px;
      }

      .section-heading {
        display: block;
      }

      .section-heading p {
        margin-top: 10px;
      }
    }

    @media (max-width: 560px) {
      .topbar .container {
        align-items: flex-start;
        flex-direction: column;
        gap: 0;
        padding-top: 8px;
        padding-bottom: 8px;
      }

      .topbar-links {
        flex-wrap: wrap;
        gap: 5px 13px;
      }

      .account-link {
        display: none;
      }

      .logo {
        min-width: 0;
        font-size: 17px;
      }

      .logo img {
        width: 30px;
        height: 30px;
      }

      .about-intro,
      .about-section,
      .about-cta {
        padding-top: 52px;
      }

      .value-grid,
      .trust-list {
        grid-template-columns: 1fr;
      }

      .value-card {
        min-height: auto;
      }

      .about-cta-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 26px;
      }

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        gap: 7px;
      }
    }