:root {
      --primary: #0B3D91;
      --primary-dark: #07275e;
      --primary-soft: #eaf1fc;
      --red: #dc2626;
      --yellow: #facc15;
      --green: #15803d;
      --blue: #2563eb;
      --ink: #172033;
      --muted: #667085;
      --line: #d9e0ea;
      --surface: #ffffff;
      --canvas: #f5f7fa;
      --shadow: 0 14px 36px rgba(23, 32, 51, .12);
      --radius: 8px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--surface);
      font-family: Arial, "Noto Sans TC", sans-serif;
      line-height: 1.6;
    }

    body.drawer-locked {
      overflow: hidden;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    .container {
      width: min(1180px, calc(100% - 32px));
      margin-inline: auto;
    }

    .topbar {
      color: #ffffff;
      background: var(--primary-dark);
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 34px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

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

    .topbar a:hover {
      text-decoration: underline;
    }

    .header {
      position: relative;
      z-index: 50;
      background: rgba(255, 255, 255, .98);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 74px;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .logo {
      min-width: 190px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--primary);
      font-size: 19px;
      font-weight: 800;
    }

    .logo img {
      width: 40px;
      height: 40px;
      object-fit: contain;
    }

    .main-nav {
      flex: 1;
      align-self: stretch;
    }

    .nav-list {
      height: 100%;
      display: flex;
      align-items: stretch;
      justify-content: center;
      gap: 2px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .nav-item {
      position: relative;
      display: flex;
      align-items: stretch;
    }

    .nav-link {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 0 13px;
      color: #26324a;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      border-bottom: 3px solid transparent;
    }

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

    .has-arrow::after {
      content: "";
      width: 6px;
      height: 6px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-2px);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      z-index: 70;
      visibility: hidden;
      opacity: 0;
      pointer-events: none;
      transform: translate(-50%, 8px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
      background: #ffffff;
      border: 1px solid var(--line);
      border-top: 3px solid var(--primary);
      box-shadow: var(--shadow);
    }

    .dropdown-panel::before,
    .mega-menu::before {
      content: "";
      position: absolute;
      right: 0;
      bottom: 100%;
      left: 0;
      height: 10px;
    }

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

    .dropdown-panel {
      width: 320px;
      padding: 12px;
    }

    .dropdown-panel a {
      display: block;
      padding: 10px 12px;
      font-size: 14px;
      border-bottom: 1px solid #edf0f4;
    }

    .dropdown-panel a:hover {
      color: var(--primary);
      background: var(--primary-soft);
    }

    .dropdown-all {
      color: var(--primary);
      font-weight: 800;
    }

    .mega-menu {
      width: min(920px, calc(100vw - 32px));
      padding: 22px;
    }

    .mega-heading {
      margin: 0 0 14px;
      font-size: 16px;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .mega-card {
      min-width: 0;
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #ffffff;
    }

    .mega-card:hover {
      border-color: var(--primary);
      box-shadow: 0 8px 20px rgba(11, 61, 145, .09);
    }

    .mega-card img {
      width: 44px;
      height: 44px;
      margin-bottom: 8px;
      object-fit: contain;
      border-radius: 5px;
    }

    .mega-card strong {
      display: block;
      overflow-wrap: anywhere;
      font-size: 14px;
    }

    .mega-card p {
      margin: 5px 0 0;
      color: var(--muted);
      font-size: 12px;
    }

    .mega-card-cover img {
      width: 100%;
      height: 92px;
      object-fit: cover;
    }

    .mega-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 5px 10px;
      margin-top: 7px;
      color: var(--muted);
      font-size: 11px;
    }

    .mega-categories {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 16px;
    }

    .mega-categories a {
      padding: 7px 10px;
      color: var(--primary);
      background: var(--primary-soft);
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
    }

    .mega-footer {
      display: flex;
      justify-content: center;
      margin-top: 16px;
      padding: 10px;
      color: #ffffff;
      background: var(--primary);
      border-radius: 5px;
      font-size: 13px;
      font-weight: 800;
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 9px;
      white-space: nowrap;
    }

    .member-entry {
      color: var(--primary);
      font-size: 14px;
      font-weight: 800;
    }

    .account-btn,
    .primary-btn,
    .secondary-btn {
      display: inline-flex;
      min-height: 42px;
      align-items: center;
      justify-content: center;
      padding: 9px 17px;
      border: 1px solid var(--primary);
      border-radius: 5px;
      font-weight: 800;
    }

    .account-btn,
    .primary-btn {
      color: #ffffff;
      background: var(--primary);
    }

    .account-btn:hover,
    .primary-btn:hover {
      background: var(--primary-dark);
    }

    .secondary-btn {
      color: var(--primary);
      background: #ffffff;
    }

    .hamburger {
      width: 42px;
      height: 42px;
      display: none;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      padding: 0;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 5px;
    }

    .hamburger span {
      width: 20px;
      height: 2px;
      background: var(--ink);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

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

    .hamburger.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 90;
      visibility: hidden;
      opacity: 0;
      background: rgba(11, 18, 32, .55);
      transition: opacity .2s ease, visibility .2s ease;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 100;
      width: min(390px, 90vw);
      overflow-y: auto;
      transform: translateX(100%);
      background: #ffffff;
      box-shadow: -12px 0 32px rgba(0, 0, 0, .18);
      transition: transform .25s ease;
    }

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

    .drawer-head {
      min-height: 72px;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 18px;
      color: #ffffff;
      background: var(--primary);
    }

    .drawer-head > a {
      font-weight: 800;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      color: #ffffff;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, .45);
      border-radius: 5px;
      font-size: 28px;
      line-height: 1;
    }

    .drawer-menu {
      padding: 12px 18px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 4px;
      color: var(--ink);
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      text-align: left;
      font-weight: 800;
    }

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

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

    .drawer-submenu {
      display: none;
      padding: 6px 0 10px 14px;
      border-bottom: 1px solid var(--line);
    }

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

    .drawer-submenu a {
      display: block;
      padding: 8px 4px;
      color: var(--muted);
      font-size: 14px;
    }

    .hero {
      overflow: hidden;
    }

    .hero-layout-45 {
      position: relative;
      padding: 58px 0 70px;
      background:
        linear-gradient(#ffffff, #ffffff) padding-box,
        repeating-linear-gradient(90deg, transparent 0 31px, rgba(11, 61, 145, .035) 31px 32px),
        repeating-linear-gradient(0deg, transparent 0 31px, rgba(11, 61, 145, .035) 31px 32px);
      border-bottom: 1px solid var(--line);
    }

    .hero-title-area {
      max-width: 850px;
      margin: 0 auto 32px;
      text-align: center;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 900;
      text-transform: uppercase;
    }

    .hero-kicker::before,
    .hero-kicker::after {
      content: "";
      width: 28px;
      height: 4px;
      background: var(--yellow);
      border: 1px solid #9a7900;
    }

    .hero h1 {
      margin: 0;
      color: #101828;
      font-size: clamp(38px, 6vw, 72px);
      line-height: 1.08;
      letter-spacing: 0;
    }

    .hero-lead {
      max-width: 720px;
      margin: 18px auto 0;
      color: var(--muted);
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 22px;
    }

    .build-table {
      position: relative;
      max-width: 1050px;
      min-height: 390px;
      margin: 0 auto;
      padding: 46px 50px 38px;
      background: #f7f8fa;
      border: 1px solid #cfd6df;
      border-radius: 8px;
      box-shadow: 0 22px 48px rgba(23, 32, 51, .14);
    }

    .build-status {
      position: absolute;
      top: 16px;
      left: 20px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #39445a;
      font-size: 13px;
      font-weight: 900;
    }

    .status-dot {
      width: 9px;
      height: 9px;
      background: var(--green);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(21, 128, 61, .14);
    }

    .parts-list {
      position: absolute;
      top: 16px;
      right: 18px;
      z-index: 2;
      width: 178px;
      padding: 10px 12px;
      background: #ffffff;
      border: 1px solid #afb8c7;
      border-radius: 4px;
      box-shadow: 4px 5px 0 rgba(23, 32, 51, .12);
      transform: rotate(2deg);
    }

    .parts-list strong {
      display: block;
      margin-bottom: 5px;
      color: var(--primary);
      font-size: 12px;
    }

    .parts-list span {
      display: block;
      padding: 3px 0;
      color: #4b5565;
      border-bottom: 1px dashed #cdd3dc;
      font-size: 11px;
    }

    .block-stage {
      min-height: 300px;
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      grid-template-rows: repeat(4, 62px);
      align-items: end;
      gap: 8px;
      padding-top: 26px;
      border-bottom: 10px solid #c7ced8;
    }

    .build-block {
      position: relative;
      min-width: 0;
      height: 100%;
      display: flex;
      align-items: flex-end;
      padding: 11px;
      overflow: visible;
      color: #ffffff;
      border: 2px solid rgba(16, 24, 40, .36);
      border-radius: 4px;
      box-shadow: inset 0 -7px 0 rgba(0, 0, 0, .13), 0 5px 0 rgba(16, 24, 40, .18);
      font-size: 13px;
      font-weight: 900;
    }

    .build-block::before {
      content: "";
      position: absolute;
      top: -9px;
      left: 12px;
      width: 18px;
      height: 9px;
      background: inherit;
      border: 2px solid rgba(16, 24, 40, .34);
      border-bottom: 0;
      border-radius: 4px 4px 0 0;
      box-shadow: 32px 0 0 currentColor;
    }

    .block-blue {
      grid-column: 1 / 5;
      grid-row: 4;
      color: #174ea6;
      background: var(--blue);
    }

    .block-blue span,
    .block-red span,
    .block-green span {
      color: #ffffff;
    }

    .block-red {
      grid-column: 5 / 9;
      grid-row: 4;
      color: #b91c1c;
      background: var(--red);
    }

    .block-yellow {
      grid-column: 9 / 13;
      grid-row: 4;
      color: #b18a00;
      background: var(--yellow);
    }

    .block-yellow span {
      color: #2c2600;
    }

    .block-green {
      grid-column: 3 / 7;
      grid-row: 3;
      color: #11652f;
      background: var(--green);
    }

    .block-primary {
      grid-column: 7 / 11;
      grid-row: 3;
      color: #07275e;
      background: var(--primary);
    }

    .block-primary span {
      color: #ffffff;
    }

    .block-small {
      grid-column: 5 / 9;
      grid-row: 2;
      color: #9a7900;
      background: #ffd43b;
    }

    .block-small span {
      color: #2c2600;
    }

    .build-caption {
      margin: 18px 0 0;
      color: var(--muted);
      text-align: center;
      font-size: 13px;
    }

    .section {
      padding: 72px 0;
    }

    .section-alt {
      background: var(--canvas);
    }

    .section-head {
      max-width: 760px;
      margin: 0 auto 32px;
      text-align: center;
    }

    .section-head span {
      color: var(--primary);
      font-size: 13px;
      font-weight: 900;
    }

    .section-head h2 {
      margin: 7px 0 10px;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: 0;
    }

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

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

    .content-card {
      min-width: 0;
      overflow: hidden;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
    }

    .content-card:hover {
      border-color: #aab8ce;
      box-shadow: 0 12px 28px rgba(23, 32, 51, .09);
    }

    .content-card-image {
      width: 100%;
      height: 184px;
      object-fit: cover;
      background: #e9edf3;
    }

    .content-card-body {
      padding: 18px;
    }

    .content-card h3 {
      margin: 0 0 8px;
      overflow-wrap: anywhere;
      font-size: 18px;
      line-height: 1.35;
    }

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

    .card-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 7px 14px;
      margin-top: 13px;
      color: #7a8496;
      font-size: 12px;
    }

    .text-link {
      display: inline-flex;
      margin-top: 14px;
      color: var(--primary);
      font-weight: 900;
    }

    .broker-card {
      padding: 20px;
    }

    .broker-card img {
      width: 58px;
      height: 58px;
      object-fit: contain;
    }

    .broker-data {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
      margin-top: 16px;
    }

    .broker-data span {
      padding: 8px;
      color: #4b5565;
      background: #f4f6f9;
      border-radius: 4px;
      font-size: 12px;
    }

    .tool-card {
      display: grid;
      grid-template-columns: 54px minmax(0, 1fr);
      gap: 14px;
      padding: 18px;
    }

    .tool-card img {
      width: 54px;
      height: 54px;
      object-fit: contain;
      padding: 7px;
      background: var(--primary-soft);
      border-radius: 6px;
    }

    .module-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .module-item {
      min-height: 160px;
      padding: 24px;
      color: #ffffff;
      border-right: 1px solid rgba(255, 255, 255, .35);
    }

    .module-item:nth-child(1) {
      background: var(--primary);
    }

    .module-item:nth-child(2) {
      background: var(--red);
    }

    .module-item:nth-child(3) {
      color: #292300;
      background: var(--yellow);
    }

    .module-item:nth-child(4) {
      background: var(--green);
      border-right: 0;
    }

    .module-item strong {
      display: block;
      margin-bottom: 8px;
      font-size: 19px;
    }

    .module-item span {
      font-size: 13px;
      opacity: .9;
    }

    .faq-list {
      max-width: 850px;
      margin: 0 auto;
      border-top: 1px solid var(--line);
    }

    .faq-item {
      border-bottom: 1px solid var(--line);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding: 20px 4px;
      color: var(--ink);
      background: transparent;
      border: 0;
      text-align: left;
      font-weight: 900;
    }

    .faq-question::after {
      content: "+";
      color: var(--primary);
      font-size: 22px;
    }

    .faq-question.active::after {
      content: "−";
    }

    .faq-answer {
      display: none;
      padding: 0 4px 20px;
      color: var(--muted);
    }

    .faq-answer.open {
      display: block;
    }

    .home-cta {
      padding: 62px 0;
      color: #ffffff;
      background: var(--primary-dark);
    }

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

    .home-cta h2 {
      margin: 0 0 8px;
      font-size: 32px;
      letter-spacing: 0;
    }

    .home-cta p {
      margin: 0;
      color: #d7e3f8;
    }

    .home-cta .secondary-btn {
      flex: 0 0 auto;
      border-color: #ffffff;
    }

    .footer {
      color: #d9e1ef;
      background: #101828;
    }

    .footer-main {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr 1fr;
      gap: 36px;
      padding: 58px 0 38px;
    }

    .footer-brand .logo {
      color: #ffffff;
    }

    .footer-brand p {
      max-width: 340px;
      color: #9ea9bc;
      font-size: 14px;
    }

    .footer h2 {
      margin: 0 0 16px;
      color: #ffffff;
      font-size: 15px;
    }

    .footer-links {
      display: grid;
      gap: 9px;
    }

    .footer-links a {
      color: #b8c2d2;
      font-size: 14px;
    }

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

    .footer-contact {
      overflow-wrap: anywhere;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding: 20px 0;
      color: #8f9aab;
      border-top: 1px solid #2a3547;
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      .main-nav {
        display: none;
      }

      .hamburger {
        display: flex;
      }

      .header-inner {
        justify-content: space-between;
      }

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

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

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

    @media (max-width: 760px) {
      .container {
        width: min(100% - 24px, 1180px);
      }

      .topbar-inner,
      .topbar-contact {
        justify-content: center;
      }

      .topbar-inner {
        padding: 6px 0;
        flex-direction: column;
        gap: 3px;
      }

      .topbar-contact {
        gap: 5px 14px;
      }

      .header-inner {
        min-height: 66px;
        gap: 8px;
      }

      .logo {
        min-width: 0;
        max-width: 170px;
        font-size: 15px;
      }

      .logo img {
        width: 34px;
        height: 34px;
      }

      .header-btns .member-entry,
      .header-btns .account-btn {
        display: none;
      }

      .hero-layout-45 {
        padding: 42px 0 50px;
      }

      .hero h1 {
        font-size: 38px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .build-table {
        min-height: 440px;
        padding: 92px 14px 24px;
      }

      .parts-list {
        top: 42px;
        right: 12px;
        width: 160px;
      }

      .block-stage {
        grid-template-columns: repeat(6, 1fr);
        grid-template-rows: repeat(6, 48px);
        gap: 7px;
      }

      .block-blue {
        grid-column: 1 / 4;
        grid-row: 6;
      }

      .block-red {
        grid-column: 4 / 7;
        grid-row: 6;
      }

      .block-yellow {
        grid-column: 1 / 4;
        grid-row: 5;
      }

      .block-green {
        grid-column: 4 / 7;
        grid-row: 5;
      }

      .block-primary {
        grid-column: 2 / 6;
        grid-row: 4;
      }

      .block-small {
        grid-column: 2 / 6;
        grid-row: 3;
      }

      .build-block {
        padding: 8px;
        font-size: 11px;
      }

      .section {
        padding: 52px 0;
      }

      .card-grid,
      .module-strip {
        grid-template-columns: 1fr;
      }

      .module-item {
        min-height: 120px;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, .35);
      }

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

      .home-cta-inner,
      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
      }

      .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
      }
    }

    @media (max-width: 420px) {
      .hero-actions,
      .hero-actions a {
        width: 100%;
      }

      .build-status {
        left: 12px;
      }

      .parts-list {
        width: 148px;
      }

      .broker-data {
        grid-template-columns: 1fr;
      }
    }