:root {
      --theme: #0B3D91;
      --theme-light: #2c6bc9;
      --ink: #071225;
      --muted: #64748b;
      --line: #dbe4f0;
      --surface: #ffffff;
      --soft: #f4f7fb;
      --accent: #43d9c5;
      --max: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--surface);
      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 {
      font: inherit;
    }

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

    .topbar {
      color: #d9e7ff;
      background: #06142d;
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 38px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .topbar-links {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
    }

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

    .header {
      position: relative;
      z-index: 20;
      background: rgba(255, 255, 255, 0.97);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
      font-size: 18px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }

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

    .main-nav {
      flex: 1;
      min-width: 0;
    }

    .nav-list {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 8px 13px;
      color: #26364f;
      font-size: 14px;
      font-weight: 650;
      white-space: nowrap;
    }

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

    .has-arrow::after {
      content: "";
      width: 6px;
      height: 6px;
      margin: -3px 0 0 8px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: calc(100% + 1px);
      left: 50%;
      z-index: 30;
      width: 330px;
      padding: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 0 0 10px 10px;
      box-shadow: 0 18px 40px rgba(4, 25, 63, 0.14);
      opacity: 0;
      visibility: hidden;
      transform: translate(-50%, 8px);
      transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
    }

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

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

    .nav-item::after {
      content: "";
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      height: 8px;
    }

    .panel-title {
      margin: 0 0 12px;
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .04em;
    }

    .panel-list {
      display: grid;
      gap: 8px;
    }

    .panel-list a {
      display: block;
      padding: 7px 0;
      color: #334155;
      font-size: 14px;
      border-bottom: 1px solid #eef2f7;
    }

    .panel-list a:hover,
    .footer-links a:hover {
      color: var(--theme-light);
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .mega-card {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
      padding: 10px;
      border: 1px solid #e7edf5;
      border-radius: 7px;
      background: #fbfdff;
    }

    .mega-card:hover {
      border-color: #9bb8e8;
      background: #f4f8ff;
    }

    .mega-card img {
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      object-fit: cover;
      border-radius: 6px;
      background: #eaf0f8;
    }

    .mega-card span {
      min-width: 0;
    }

    .mega-card strong,
    .mega-card small {
      display: block;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mega-card strong {
      font-size: 13px;
    }

    .mega-card small {
      margin-top: 2px;
      color: var(--muted);
      font-size: 11px;
    }

    .mega-footer {
      display: inline-flex;
      margin-top: 16px;
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
    }

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

    .member-btn {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 0 16px;
      color: #ffffff;
      background: var(--theme);
      border-radius: 5px;
      font-size: 13px;
      font-weight: 800;
    }

    .member-btn:hover {
      background: #082f70;
    }

    .hamburger {
      display: none;
      width: 42px;
      height: 38px;
      padding: 8px;
      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(--ink);
      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(2, 12, 29, .55);
      opacity: 0;
      visibility: hidden;
      transition: opacity .2s ease, visibility .2s ease;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 50;
      width: min(390px, 88vw);
      height: 100vh;
      overflow-y: auto;
      padding-bottom: 28px;
      background: #ffffff;
      box-shadow: -20px 0 45px rgba(2, 12, 29, .2);
      transform: translateX(100%);
      transition: transform .25s ease;
    }

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

    .drawer-head {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 18px 22px;
      border-bottom: 1px solid var(--line);
      color: var(--theme);
      font-weight: 800;
    }

    .drawer-head > :first-child {
      flex: 1;
    }

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

    .drawer-close {
      width: 34px;
      height: 34px;
      border: 0;
      background: transparent;
      color: var(--ink);
      font-size: 28px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 12px 22px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      color: #26364f;
      background: transparent;
      border: 0;
      border-bottom: 1px solid #edf1f6;
      font-size: 15px;
      text-align: left;
      cursor: pointer;
    }

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

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

    .drawer-submenu {
      display: none;
      padding: 4px 0 8px 14px;
      border-bottom: 1px solid #edf1f6;
    }

    .drawer-submenu.open {
      display: grid;
    }

    .drawer-submenu a {
      padding: 8px 0;
      color: var(--muted);
      font-size: 13px;
    }

    .footer {
      padding: 64px 0 24px;
      color: #ccd8ee;
      background: #07152f;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 36px;
    }

    .footer .logo {
      color: #ffffff;
    }

    .footer-brand p {
      max-width: 340px;
      margin: 20px 0 0;
      color: #9fb0cb;
      font-size: 14px;
    }

    .footer h3 {
      margin: 4px 0 16px;
      color: #ffffff;
      font-size: 15px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
      color: #9fb0cb;
      font-size: 13px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 20px;
      color: #8194b3;
      border-top: 1px solid rgba(177, 201, 236, .18);
      font-size: 12px;
    }

    .about-page {
      overflow: hidden;
    }

    .about-hero {
      padding: 92px 0 86px;
      color: #ffffff;
      background:
        linear-gradient(115deg, rgba(6, 22, 54, .96), rgba(11, 61, 145, .82)),
        radial-gradient(circle at 78% 20%, rgba(67, 217, 197, .24), transparent 30%),
        #0b3d91;
    }

    .about-hero-inner {
      max-width: 800px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 18px;
      color: #8af0df;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
    }

    .eyebrow::before {
      content: "";
      width: 28px;
      height: 2px;
      background: var(--accent);
    }

    .about-hero h1 {
      max-width: 780px;
      margin: 0;
      font-size: clamp(38px, 6vw, 72px);
      line-height: 1.12;
      letter-spacing: .01em;
    }

    .about-hero p {
      max-width: 680px;
      margin: 24px 0 0;
      color: #d8e6ff;
      font-size: 18px;
    }

    .about-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 32px;
    }

    .primary-action,
    .secondary-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 5px;
      font-size: 14px;
      font-weight: 800;
    }

    .primary-action {
      color: #062447;
      background: var(--accent);
    }

    .secondary-action {
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, .45);
      background: rgba(255, 255, 255, .08);
    }

    .about-section {
      padding: 86px 0;
    }

    .about-section.soft-section {
      background: var(--soft);
    }

    .section-heading {
      max-width: 680px;
      margin-bottom: 34px;
    }

    .section-heading h2 {
      margin: 0;
      color: var(--ink);
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.2;
    }

    .section-heading p {
      margin: 14px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

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

    .value-card {
      min-height: 230px;
      padding: 28px;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 8px;
    }

    .value-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      margin-bottom: 22px;
      color: #ffffff;
      background: var(--theme);
      border-radius: 50%;
      font-size: 13px;
      font-weight: 800;
    }

    .value-card h3 {
      margin: 0 0 10px;
      font-size: 20px;
    }

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

    .story-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 70px;
      align-items: start;
    }

    .story-intro h2 {
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.2;
    }

    .story-intro p {
      margin: 18px 0 0;
      color: var(--muted);
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 24px;
      padding-left: 30px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      top: 5px;
      bottom: 5px;
      left: 7px;
      width: 1px;
      background: #b5c9e8;
    }

    .timeline-item {
      position: relative;
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      top: 7px;
      left: -29px;
      width: 13px;
      height: 13px;
      border: 3px solid #ffffff;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 1px var(--theme);
    }

    .timeline-item strong {
      display: block;
      color: var(--theme);
      font-size: 13px;
      letter-spacing: .05em;
    }

    .timeline-item h3 {
      margin: 4px 0 5px;
      font-size: 19px;
    }

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

    .trust-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--line);
    }

    .trust-item {
      padding: 26px 20px;
      text-align: center;
      background: #ffffff;
    }

    .trust-item strong {
      display: block;
      color: var(--theme);
      font-size: 28px;
      line-height: 1;
    }

    .trust-item span {
      display: block;
      margin-top: 8px;
      color: var(--muted);
      font-size: 13px;
    }

    .about-cta {
      padding: 60px 0;
      background: #eaf1fb;
    }

    .about-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .about-cta h2 {
      margin: 0;
      font-size: clamp(25px, 3vw, 36px);
      line-height: 1.25;
    }

    .about-cta p {
      margin: 10px 0 0;
      color: var(--muted);
    }

    @media (max-width: 1020px) {
      .header-inner {
        gap: 18px;
      }

      .nav-link {
        padding-inline: 8px;
        font-size: 13px;
      }

      .header-btns > :first-child {
        display: none;
      }

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

    @media (max-width: 800px) {
      .container {
        width: min(var(--max), calc(100% - 32px));
      }

      .topbar-inner {
        min-height: 48px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 0;
      }

      .topbar-links {
        gap: 12px;
        font-size: 12px;
      }

      .main-nav {
        display: none;
      }

      .hamburger {
        display: block;
      }

      .about-hero {
        padding: 70px 0 64px;
      }

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

      .about-section {
        padding: 64px 0;
      }

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

      .story-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }

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

    @media (max-width: 520px) {
      .header-inner {
        min-height: 66px;
      }

      .logo {
        font-size: 16px;
      }

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

      .member-btn {
        min-height: 36px;
        padding-inline: 11px;
        font-size: 12px;
      }

      .about-hero h1 {
        font-size: 39px;
      }

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

      .primary-action,
      .secondary-action {
        width: 100%;
      }

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

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

      .footer {
        padding-top: 48px;
      }

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