:root {
      --theme: #0B3D91;
      --template-theme: {主题色};
      --theme-dark: #072b68;
      --theme-soft: #eaf1fb;
      --green: #28784a;
      --green-soft: #e8f3eb;
      --wood: #b4773e;
      --wood-dark: #75451f;
      --wood-soft: #f3e5d3;
      --ink: #17202b;
      --muted: #657080;
      --line: #dfe4e8;
      --paper: #ffffff;
      --canvas: #f5f7f8;
      --shadow: 0 12px 32px rgba(23, 32, 43, .09);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--canvas);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      line-height: 1.65;
      letter-spacing: 0;
    }

    body,
    button,
    input {
      font: inherit;
    }

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

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

    button {
      color: inherit;
    }

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

    .topbar {
      color: #edf4ff;
      background: var(--theme-dark);
      font-size: 13px;
    }

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

    .topbar a:hover {
      color: #fff;
      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: 170px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 19px;
      font-weight: 800;
    }

    .logo img {
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

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

    .nav-list {
      height: 100%;
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
      list-style: none;
    }

    .nav-list > li {
      position: relative;
      display: flex;
      align-items: center;
    }

    .nav-link {
      height: 100%;
      padding: 0 13px;
      display: inline-flex;
      align-items: center;
      color: #263343;
      font-size: 15px;
      font-weight: 700;
      white-space: nowrap;
      border-bottom: 3px solid transparent;
    }

    .nav-link:hover,
    .nav-list > li:focus-within > .nav-link {
      color: var(--theme);
      border-bottom-color: var(--theme);
    }

    .has-arrow::after {
      width: 6px;
      height: 6px;
      margin: -4px 0 0 8px;
      content: "";
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      z-index: 60;
      visibility: hidden;
      opacity: 0;
      transform: translate(-50%, 10px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 3px solid var(--theme);
      box-shadow: var(--shadow);
    }

    .dropdown-panel {
      width: 310px;
      padding: 18px;
    }

    .mega-menu {
      width: min(780px, calc(100vw - 40px));
      padding: 22px;
    }

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

    .drop-title,
    .mega-title {
      margin: 0 0 12px;
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
    }

    .drop-item {
      min-height: 38px;
      padding: 9px 10px;
      display: block;
      overflow: hidden;
      color: #384556;
      background: #f7f9fb;
      border: 1px solid transparent;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .drop-item + .drop-item {
      margin-top: 7px;
    }

    .drop-item:hover {
      color: var(--theme);
      background: var(--theme-soft);
      border-color: #cbdaf0;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
    }

    .mega-grid > .drop-item {
      margin: 0;
    }

    .mega-card {
      min-width: 0;
      min-height: 82px;
      padding: 11px;
      display: flex;
      align-items: center;
      gap: 11px;
      background: #f7f9fb;
      border: 1px solid #e8ecef;
    }

    .mega-card:hover {
      border-color: #b8cae4;
      box-shadow: 0 7px 18px rgba(11, 61, 145, .08);
    }

    .mega-card img {
      width: 50px;
      height: 50px;
      flex: 0 0 50px;
      object-fit: contain;
      background: #fff;
      border: 1px solid var(--line);
    }

    .mega-card > span {
      min-width: 0;
      display: grid;
      gap: 3px;
    }

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

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

    .mega-card span span {
      color: var(--muted);
      font-size: 12px;
    }

    .mega-footer {
      margin-top: 14px;
      padding: 11px 14px;
      display: block;
      color: #fff;
      text-align: center;
      font-size: 14px;
      font-weight: 800;
      background: var(--theme);
    }

    .mega-footer:hover {
      background: var(--theme-dark);
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
    }

    .member-btn,
    .open-btn {
      min-height: 38px;
      padding: 8px 13px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 800;
      border: 1px solid var(--theme);
    }

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

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

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

    .open-btn:hover {
      background: var(--theme-dark);
    }

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 10px;
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      cursor: pointer;
    }

    .hamburger span {
      width: 100%;
      height: 2px;
      display: block;
      background: var(--ink);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger span + span {
      margin-top: 5px;
    }

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

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

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

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 79;
      visibility: hidden;
      opacity: 0;
      background: rgba(13, 22, 34, .58);
      transition: opacity .2s ease, visibility .2s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 80;
      width: min(390px, 90vw);
      height: 100dvh;
      overflow-y: auto;
      background: #fff;
      box-shadow: -18px 0 38px rgba(0, 0, 0, .18);
      transform: translateX(105%);
      transition: transform .24s ease;
    }

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

    .drawer-head {
      min-height: 70px;
      padding: 14px 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      background: var(--theme);
    }

    .drawer-head > span {
      min-width: 0;
      flex: 1;
    }

    .drawer-head > a {
      padding: 7px 12px;
      font-weight: 800;
      border: 1px solid rgba(255, 255, 255, .55);
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      padding: 0;
      color: #fff;
      font-size: 28px;
      line-height: 1;
      background: transparent;
      border: 0;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 12px 16px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 48px;
      padding: 12px 8px;
      display: flex;
      align-items: center;
      color: #253343;
      font-weight: 800;
      text-align: left;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      cursor: pointer;
    }

    .drawer-toggle {
      justify-content: space-between;
    }

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

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

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: #f7f9fb;
      transition: max-height .25s ease;
    }

    .drawer-submenu.open {
      max-height: 720px;
    }

    .drawer-submenu a {
      padding: 10px 16px;
      display: block;
      color: #516071;
      font-size: 14px;
      border-bottom: 1px solid #e8ecef;
    }

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

    .tools-page {
      min-height: 680px;
    }

    .tools-page .tools-intro {
      position: relative;
      overflow: hidden;
      color: #fff;
      background:
        linear-gradient(rgba(7, 43, 104, .92), rgba(11, 61, 145, .96)),
        linear-gradient(90deg, var(--wood-dark), var(--green));
      border-bottom: 5px solid var(--wood);
    }

    .tools-page .tools-intro::after {
      position: absolute;
      right: -60px;
      bottom: -95px;
      width: 310px;
      height: 180px;
      content: "";
      opacity: .16;
      border: 24px solid #fff;
      border-radius: 50%;
      transform: rotate(-10deg);
    }

    .tools-page .intro-inner {
      position: relative;
      z-index: 1;
      padding: 54px 0 46px;
      text-align: center;
    }

    .tools-page .eyebrow {
      margin: 0 0 9px;
      color: #d9e7fa;
      font-size: 13px;
      font-weight: 800;
    }

    .tools-page h1 {
      margin: 0;
      font-size: clamp(30px, 5vw, 48px);
      line-height: 1.2;
      letter-spacing: 0;
    }

    .tools-page .intro-copy {
      max-width: 760px;
      margin: 16px auto 0;
      color: #e9f0fa;
      font-size: 16px;
    }

    .tools-page .workflow {
      margin-top: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tools-page .workflow span {
      min-width: 120px;
      padding: 8px 15px;
      color: #153257;
      font-weight: 800;
      background: #fff;
      border-bottom: 3px solid var(--wood);
    }

    .tools-page .workflow b {
      color: #fff;
      font-size: 20px;
    }

    .tools-page .tools-section {
      padding: 56px 0 66px;
    }

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

    .tools-page .section-heading h2 {
      margin: 0;
      color: var(--theme-dark);
      font-size: 27px;
      letter-spacing: 0;
    }

    .tools-page .section-heading p {
      max-width: 620px;
      margin: 0;
      color: var(--muted);
      text-align: right;
    }

    .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: 260px;
      padding: 22px;
      display: flex;
      flex-direction: column;
      background: var(--paper);
      border: 1px solid var(--line);
      border-top: 4px solid var(--green);
      box-shadow: 0 8px 22px rgba(24, 38, 54, .06);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }

    .tools-page .tool-card:hover {
      border-color: #aec2dd;
      border-top-color: var(--wood);
      box-shadow: var(--shadow);
      transform: translateY(-3px);
    }

    .tools-page .tool-icon {
      width: 62px;
      height: 62px;
      padding: 9px;
      display: grid;
      place-items: center;
      background: var(--green-soft);
      border: 1px solid #cfe2d4;
    }

    .tools-page .tool-icon img {
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

    .tools-page .tool-card h3 {
      margin: 17px 0 8px;
      color: #1d2a38;
      font-size: 19px;
      line-height: 1.35;
      letter-spacing: 0;
    }

    .tools-page .tool-card p {
      margin: 0 0 20px;
      color: var(--muted);
      font-size: 14px;
    }

    .tools-page .tool-action {
      margin-top: auto;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--theme);
      font-size: 14px;
      font-weight: 800;
    }

    .tools-page .tool-action::after {
      content: "→";
      font-size: 18px;
      transition: transform .18s ease;
    }

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

    .tools-page .method-band {
      padding: 44px 0;
      background: var(--wood-soft);
      border-top: 1px solid #e2c9aa;
      border-bottom: 1px solid #e2c9aa;
    }

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

    .tools-page .method-item {
      min-width: 0;
      padding: 22px;
      background: #fff;
      border-left: 5px solid var(--wood);
    }

    .tools-page .method-item span {
      color: var(--green);
      font-size: 13px;
      font-weight: 800;
    }

    .tools-page .method-item h2 {
      margin: 7px 0 6px;
      font-size: 20px;
      letter-spacing: 0;
    }

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

    .tools-page .risk-note {
      padding: 36px 0 54px;
      background: #fff;
    }

    .tools-page .risk-box {
      padding: 24px;
      color: #3f4d5c;
      background: #f7f9fb;
      border: 1px solid var(--line);
      border-left: 5px solid var(--theme);
    }

    .tools-page .risk-box h2 {
      margin: 0 0 7px;
      color: var(--theme-dark);
      font-size: 20px;
      letter-spacing: 0;
    }

    .tools-page .risk-box p {
      margin: 0;
    }

    .footer {
      color: #dce4ed;
      background: #14202d;
    }

    .footer-grid {
      padding: 52px 0 38px;
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 36px;
    }

    .footer-brand {
      margin-bottom: 13px;
      color: #fff;
      font-size: 22px;
      font-weight: 800;
    }

    .footer h3 {
      margin: 0 0 15px;
      color: #fff;
      font-size: 16px;
      letter-spacing: 0;
    }

    .footer p {
      margin: 0 0 9px;
      color: #acbac8;
      font-size: 14px;
    }

    .footer a {
      margin-bottom: 9px;
      display: block;
      color: #c7d1dc;
      font-size: 14px;
    }

    .footer a:hover {
      color: #fff;
      text-decoration: underline;
    }

    .footer-social {
      margin-top: 16px;
    }

    .footer-bottom {
      padding: 20px 0;
      color: #97a7b7;
      text-align: center;
      font-size: 13px;
      border-top: 1px solid #2c3946;
    }

    @media (max-width: 1120px) {
      .main-nav {
        display: none;
      }

      .hamburger {
        display: block;
      }

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

      .logo {
        flex: 1;
      }
    }

    @media (max-width: 900px) {
      .tools-page .tool-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .tools-page .method-grid {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 640px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .topbar .container {
        padding: 8px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
      }

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

      .header-inner {
        min-height: 68px;
        gap: 10px;
      }

      .logo {
        min-width: 0;
        font-size: 16px;
      }

      .logo img {
        width: 37px;
        height: 37px;
      }

      .member-btn {
        display: none;
      }

      .open-btn {
        min-height: 36px;
        padding: 7px 10px;
      }

      .tools-page .intro-inner {
        padding: 42px 0 38px;
      }

      .tools-page .workflow {
        display: grid;
        grid-template-columns: 1fr;
      }

      .tools-page .workflow span {
        width: 100%;
      }

      .tools-page .workflow b {
        transform: rotate(90deg);
      }

      .tools-page .tools-section {
        padding: 42px 0 48px;
      }

      .tools-page .section-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
      }

      .tools-page .section-heading p {
        text-align: left;
      }

      .tools-page .tool-grid {
        grid-template-columns: 1fr;
      }

      .tools-page .tool-card {
        min-height: 235px;
      }

      .footer-grid {
        padding: 42px 0 28px;
        grid-template-columns: 1fr;
        gap: 28px;
      }
    }