:root {
      --theme: #0B3D91;
      --theme-dark: #06265f;
      --theme-soft: #eaf2ff;
      --ink: #13213a;
      --muted: #627089;
      --line: #dce3ed;
      --surface: #ffffff;
      --surface-alt: #f5f7fa;
      --success: #07875b;
      --warning: #d97706;
      --shadow: 0 16px 40px rgba(19, 33, 58, .10);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--surface);
      font-family: "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
      line-height: 1.65;
    }

    body.drawer-lock {
      overflow: hidden;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      color: inherit;
    }

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

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

    .topbar-inner {
      min-height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .topbar-contact {
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .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: 76px;
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .logo {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme-dark);
      font-size: 18px;
      font-weight: 800;
    }

    .logo img {
      width: 38px;
      height: 38px;
      object-fit: contain;
    }

    .logo span {
      max-width: 180px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .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: static;
      display: flex;
      align-items: stretch;
    }

    .nav-link {
      position: relative;
      display: flex;
      align-items: center;
      padding: 0 11px;
      color: #28364d;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      right: 11px;
      bottom: 16px;
      left: 11px;
      height: 2px;
      background: var(--theme);
      transform: scaleX(0);
      transition: transform .2s ease;
    }

    .nav-link.has-arrow {
      padding-right: 25px;
    }

    .nav-link.has-arrow::before {
      content: "";
      position: absolute;
      top: 50%;
      right: 11px;
      width: 6px;
      height: 6px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: translateY(-70%) rotate(45deg);
    }

    .nav-item:hover .nav-link::after,
    .nav-item:focus-within .nav-link::after {
      transform: scaleX(1);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      z-index: 60;
      visibility: hidden;
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s;
    }

    .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;
      pointer-events: auto;
      transform: translateY(0);
    }

    .dropdown-panel {
      width: 320px;
      margin-left: -14px;
      padding: 18px;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 3px solid var(--theme);
      box-shadow: var(--shadow);
    }

    .dropdown-title {
      display: block;
      margin-bottom: 10px;
      color: var(--theme-dark);
      font-size: 14px;
    }

    .dropdown-article {
      display: block;
      padding: 9px 0;
      border-bottom: 1px solid #edf1f6;
      color: #33415a;
      font-size: 13px;
    }

    .dropdown-article:hover,
    .dropdown-more:hover {
      color: var(--theme);
    }

    .dropdown-more {
      display: inline-block;
      margin-top: 13px;
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
    }

    .mega-menu {
      right: 20px;
      left: 20px;
      max-height: min(620px, calc(100vh - 120px));
      padding: 24px;
      overflow-y: auto;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 3px solid var(--theme);
      box-shadow: var(--shadow);
    }

    .mega-menu-title {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
    }

    .mega-menu-title strong {
      color: var(--theme-dark);
      font-size: 18px;
    }

    .mega-menu-title span {
      color: var(--muted);
      font-size: 13px;
    }

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

    .mega-card {
      min-width: 0;
      padding: 14px;
      background: var(--surface-alt);
      border: 1px solid transparent;
      border-radius: 6px;
      transition: border-color .18s ease, background .18s ease;
    }

    .mega-card:hover {
      background: #fff;
      border-color: #afc7ed;
    }

    .mega-card-head {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .mega-card-head img {
      width: 34px;
      height: 34px;
      object-fit: contain;
      background: #fff;
      border-radius: 4px;
    }

    .mega-card strong {
      color: #172844;
      font-size: 14px;
    }

    .mega-card p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.55;
    }

    .mega-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 10px;
    }

    .mega-stats span,
    .video-duration,
    .product-meta {
      color: var(--theme);
      font-size: 11px;
      font-weight: 700;
    }

    .mega-split {
      display: grid;
      grid-template-columns: 210px minmax(0, 1fr);
      gap: 20px;
    }

    .mega-categories {
      display: flex;
      flex-direction: column;
      gap: 6px;
      padding-right: 18px;
      border-right: 1px solid var(--line);
    }

    .mega-categories a {
      padding: 9px 11px;
      border-radius: 4px;
      color: #34435b;
      font-size: 13px;
      font-weight: 700;
    }

    .mega-categories a:hover {
      color: var(--theme);
      background: var(--theme-soft);
    }

    .video-mega-card,
    .product-mega-card {
      display: grid;
      grid-template-columns: 90px minmax(0, 1fr);
      gap: 12px;
    }

    .video-mega-card > img,
    .product-mega-card > img {
      width: 90px;
      height: 68px;
      object-fit: cover;
      border-radius: 4px;
    }

    .video-mega-copy,
    .product-mega-copy {
      min-width: 0;
    }

    .video-mega-copy p,
    .product-mega-copy p {
      display: -webkit-box;
      overflow: hidden;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .tool-mega-card .mega-card-head img {
      padding: 4px;
    }

    .mega-footer {
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      margin-top: 18px;
      color: var(--theme);
      background: var(--theme-soft);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .mega-footer:hover {
      color: #fff;
      background: var(--theme);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 5px;
      font-weight: 800;
      cursor: pointer;
      transition: color .18s ease, background .18s ease, border-color .18s ease;
    }

    .btn-primary {
      color: #fff;
      background: var(--theme);
      border-color: var(--theme);
    }

    .btn-primary:hover {
      background: var(--theme-dark);
      border-color: var(--theme-dark);
    }

    .btn-secondary {
      color: var(--theme);
      background: #fff;
      border-color: #aac2e8;
    }

    .btn-secondary:hover {
      background: var(--theme-soft);
    }

    .btn-small {
      min-height: 38px;
      padding-inline: 15px;
      font-size: 13px;
    }

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

    .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: 80;
      visibility: hidden;
      opacity: 0;
      background: rgba(7, 18, 38, .58);
      transition: opacity .24s ease, visibility .24s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 90;
      width: min(400px, 92vw);
      overflow-y: auto;
      background: #fff;
      box-shadow: -20px 0 50px rgba(0, 0, 0, .18);
      transform: translateX(105%);
      transition: transform .26s ease;
    }

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

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

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

    .drawer-close {
      width: 40px;
      height: 40px;
      margin-left: auto;
      padding: 0;
      color: #fff;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, .35);
      border-radius: 4px;
      font-size: 27px;
      line-height: 1;
      cursor: pointer;
    }

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

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 50px;
      display: flex;
      align-items: center;
      padding: 0;
      color: #1d2d48;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle {
      position: relative;
      padding-right: 30px;
    }

    .drawer-toggle::after {
      content: "+";
      position: absolute;
      right: 4px;
      color: var(--theme);
      font-size: 22px;
      font-weight: 500;
    }

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

    .drawer-submenu {
      display: none;
      padding: 7px 0 12px 15px;
      border-bottom: 1px solid var(--line);
    }

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

    .drawer-submenu a {
      display: block;
      padding: 8px 0;
      color: var(--muted);
      font-size: 14px;
    }

    .drawer-submenu a:hover {
      color: var(--theme);
    }

    .tools-page {
      min-width: 0;
      background: #fff;
    }

    .tools-page .tools-intro {
      position: relative;
      overflow: hidden;
      padding: 70px 0 58px;
      color: #fff;
      background: var(--theme-dark);
    }

    .tools-page .tools-intro::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .24;
      background-image:
        linear-gradient(rgba(255, 255, 255, .16) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .16) 1px, transparent 1px);
      background-size: 42px 42px;
    }

    .tools-page .tools-intro-inner {
      position: relative;
      z-index: 1;
      max-width: 850px;
    }

    .tools-page .eyebrow {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      margin-bottom: 16px;
      padding: 0 11px;
      color: #dceaff;
      border: 1px solid rgba(255, 255, 255, .32);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .tools-page h1 {
      max-width: 760px;
      margin: 0;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.15;
      letter-spacing: 0;
    }

    .tools-page .tools-intro p {
      max-width: 720px;
      margin: 20px 0 0;
      color: #d4e1f5;
      font-size: 17px;
    }

    .tools-page .tool-benefits {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      margin-top: -28px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .tools-page .benefit-item {
      min-width: 0;
      padding: 24px;
      border-right: 1px solid var(--line);
    }

    .tools-page .benefit-item:last-child {
      border-right: 0;
    }

    .tools-page .benefit-number {
      display: block;
      margin-bottom: 5px;
      color: var(--theme);
      font-size: 25px;
      font-weight: 900;
    }

    .tools-page .benefit-item strong {
      display: block;
      font-size: 16px;
    }

    .tools-page .benefit-item p {
      margin: 7px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .tools-page .tools-directory {
      padding: 70px 0 80px;
    }

    .tools-page .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 28px;
    }

    .tools-page .section-head h2 {
      margin: 0 0 7px;
      color: var(--ink);
      font-size: 30px;
      line-height: 1.25;
    }

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

    .tools-page .tool-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      flex: 0 0 auto;
      color: var(--success);
      font-size: 13px;
      font-weight: 800;
    }

    .tools-page .tool-status::before {
      content: "";
      width: 9px;
      height: 9px;
      background: var(--success);
      border-radius: 50%;
      box-shadow: 0 0 0 5px rgba(7, 135, 91, .12);
    }

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

    .tools-page .tool-card {
      min-width: 0;
      min-height: 280px;
      display: flex;
      flex-direction: column;
      padding: 24px;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 4px solid var(--theme);
      border-radius: 7px;
      box-shadow: 0 8px 24px rgba(19, 33, 58, .06);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .tools-page .tool-card:hover {
      border-color: #9db9e4;
      box-shadow: 0 18px 38px rgba(19, 33, 58, .12);
      transform: translateY(-4px);
    }

    .tools-page .tool-card-head {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .tools-page .tool-icon {
      width: 54px;
      height: 54px;
      flex: 0 0 54px;
      padding: 8px;
      object-fit: contain;
      background: var(--theme-soft);
      border: 1px solid #cfdef5;
      border-radius: 6px;
    }

    .tools-page .tool-type {
      display: block;
      margin-bottom: 2px;
      color: var(--theme);
      font-size: 12px;
      font-weight: 800;
    }

    .tools-page .tool-card h2 {
      margin: 0;
      overflow-wrap: anywhere;
      font-size: 19px;
      line-height: 1.35;
    }

    .tools-page .tool-summary {
      flex: 1;
      margin: 18px 0;
      color: var(--muted);
      font-size: 14px;
    }

    .tools-page .tool-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--line);
    }

    .tools-page .tool-card-footer span {
      color: #708099;
      font-size: 12px;
    }

    .tools-page .tool-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--theme);
      font-size: 14px;
      font-weight: 900;
    }

    .tools-page .tool-link::after {
      content: "→";
      transition: transform .18s ease;
    }

    .tools-page .tool-card:hover .tool-link::after {
      transform: translateX(4px);
    }

    .tools-page .tools-guide {
      padding: 68px 0;
      background: var(--surface-alt);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .tools-page .guide-head {
      max-width: 720px;
      margin-bottom: 30px;
    }

    .tools-page .guide-head h2 {
      margin: 0 0 10px;
      font-size: 30px;
    }

    .tools-page .guide-head p {
      margin: 0;
      color: var(--muted);
    }

    .tools-page .guide-steps {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 1px;
      background: var(--line);
      border: 1px solid var(--line);
    }

    .tools-page .guide-step {
      min-width: 0;
      padding: 28px;
      background: #fff;
    }

    .tools-page .guide-step span {
      display: inline-flex;
      width: 34px;
      height: 34px;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: #fff;
      background: var(--theme);
      border-radius: 4px;
      font-weight: 900;
    }

    .tools-page .guide-step h3 {
      margin: 0 0 8px;
      font-size: 18px;
    }

    .tools-page .guide-step p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .tools-page .risk-note {
      padding: 28px 0 72px;
      background: var(--surface-alt);
    }

    .tools-page .risk-note-inner {
      padding: 22px 24px;
      color: #4b3a12;
      background: #fff9e8;
      border: 1px solid #eddba8;
      border-left: 4px solid var(--warning);
    }

    .tools-page .risk-note h2 {
      margin: 0 0 6px;
      font-size: 17px;
    }

    .tools-page .risk-note p {
      margin: 0;
      font-size: 14px;
    }

    .footer {
      color: #dbe5f4;
      background: #071a3a;
    }

    .footer-main {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 42px;
      padding-top: 58px;
      padding-bottom: 44px;
    }

    .footer .logo {
      color: #fff;
    }

    .footer-brand p {
      max-width: 360px;
      margin: 18px 0 0;
      color: #aebbd0;
      font-size: 14px;
    }

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

    .footer-links,
    .footer-contact {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 9px;
    }

    .footer-links a,
    .footer-contact a {
      color: #b9c5d7;
      font-size: 14px;
    }

    .footer-links a:hover,
    .footer-contact a:hover {
      color: #fff;
    }

    .social-link {
      margin-top: 5px;
      color: #8ebcff !important;
      font-weight: 800;
    }

    .footer-bottom {
      min-height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      color: #8f9eb5;
      border-top: 1px solid rgba(255, 255, 255, .12);
      font-size: 13px;
    }

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

      .header-inner {
        min-height: 68px;
      }

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

      .hamburger {
        display: flex;
      }

      .tools-page .tool-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(calc(100% - 28px), var(--container));
      }

      .topbar-inner {
        min-height: 46px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 2px;
        padding-block: 7px;
      }

      .topbar-contact {
        width: 100%;
        flex-wrap: wrap;
        gap: 2px 14px;
      }

      .header-btns > .btn {
        display: none;
      }

      .logo span {
        max-width: 150px;
      }

      .tools-page .tools-intro {
        padding: 54px 0 52px;
      }

      .tools-page h1 {
        font-size: 36px;
      }

      .tools-page .tools-intro p {
        font-size: 15px;
      }

      .tools-page .tool-benefits,
      .tools-page .tool-grid,
      .tools-page .guide-steps {
        grid-template-columns: 1fr;
      }

      .tools-page .benefit-item {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .tools-page .benefit-item:last-child {
        border-bottom: 0;
      }

      .tools-page .tools-directory {
        padding: 52px 0 58px;
      }

      .tools-page .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }

      .tools-page .tool-card {
        min-height: 250px;
      }

      .footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
        padding-top: 46px;
      }

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding-block: 18px;
      }
    }

    @media (max-width: 420px) {
      .logo img {
        width: 34px;
        height: 34px;
      }

      .logo span {
        max-width: 118px;
        font-size: 16px;
      }

      .tools-page h1 {
        font-size: 31px;
      }

      .tools-page .tool-card-footer {
        align-items: flex-start;
        flex-direction: column;
      }
    }