:root {
      --primary: #795f49;
      --primary-dark: #5f4938;
      --accent: #b99573;
      --text: #2f2b28;
      --muted: #746d67;
      --line: #ece6df;
      --soft: #faf8f5;
      --white: #ffffff;
      --shadow: 0 14px 36px rgba(73, 55, 40, 0.12);
      --container: 1380px;
      --header-height: 74px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background: var(--white);
    }

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

    button {
      border: none;
      background: none;
      color: inherit;
      cursor: pointer;
      font: inherit;
    }

    .container {
      width: min(calc(100% - 48px), var(--container));
      margin: 0 auto;
    }

    /* Topbar */
    .topbar {
      background: var(--soft);
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 34px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

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

    .topbar a:hover {
      color: var(--primary);
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }

    .header-inner {
      min-height: var(--header-height);
      display: flex;
      align-items: center;
      gap: 26px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand-logo {
      display: block;
      width: clamp(210px, 18vw, 310px);
      max-height: 62px;
      object-fit: contain;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--white);
      background: var(--primary);
      font-size: 17px;
      font-weight: 700;
      letter-spacing: 1px;
    }

    .brand-copy {
      display: grid;
      gap: 2px;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 1.4px;
    }

    .brand-en {
      color: var(--muted);
      font-size: 10px;
      letter-spacing: 1.3px;
    }

    .desktop-nav {
      flex: 1;
      height: var(--header-height);
    }

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

    .nav-item {
      position: relative;
      height: 100%;
      display: flex;
      align-items: center;
    }

    .nav-link,
    .nav-trigger {
      position: relative;
      height: 100%;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 0 13px;
      font-size: 15px;
      font-weight: 500;
      white-space: nowrap;
      transition: color 0.2s ease;
    }

    .nav-link:hover,
    .nav-trigger:hover,
    .nav-item:hover > .nav-trigger {
      color: var(--primary);
    }

    .nav-link::after,
    .nav-trigger::after {
      content: "";
      position: absolute;
      right: 13px;
      bottom: 0;
      left: 13px;
      height: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transform-origin: center;
      transition: transform 0.2s ease;
    }

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

    .chevron {
      width: 12px;
      height: 12px;
      transition: transform 0.2s ease;
    }

    .nav-item:hover .chevron {
      transform: rotate(180deg);
    }

    /* Dropdown */
    .dropdown {
      position: absolute;
      top: calc(100% + 1px);
      left: 50%;
      width: 246px;
      padding: 10px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 0 0 10px 10px;
      box-shadow: var(--shadow);
      opacity: 0;
      visibility: hidden;
      transform: translate(-50%, 10px);
      transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    }

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

    .dropdown-list {
      list-style: none;
    }

    .dropdown-link {
      display: block;
      padding: 10px 12px;
      border-radius: 6px;
      font-size: 14px;
      line-height: 1.45;
      transition: color 0.2s ease, background 0.2s ease, padding-left 0.2s ease;
    }

    .dropdown-link:hover {
      padding-left: 16px;
      color: var(--primary);
      background: var(--soft);
    }

    /* Mega menu */
    .mega-dropdown {
      width: min(900px, calc(100vw - 48px));
      padding: 24px;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1.12fr;
      gap: 24px;
    }

    .mega-title {
      margin-bottom: 9px;
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
    }

    .mega-links {
      list-style: none;
    }

    .mega-links .dropdown-link {
      padding: 8px 0;
    }

    .mega-links .dropdown-link:hover {
      padding-left: 5px;
      background: transparent;
    }

    .mega-card {
      padding: 18px;
      background: var(--soft);
      border-radius: 8px;
    }

    .mega-card-title {
      margin-bottom: 8px;
      font-size: 16px;
      font-weight: 700;
    }

    .mega-card-text {
      margin-bottom: 14px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.75;
    }

    .text-link {
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
    }

    .text-link:hover {
      text-decoration: underline;
    }

    /* Header actions */
    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .search-button {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      transition: color 0.2s ease, background 0.2s ease;
    }

    .search-button:hover {
      color: var(--primary);
      background: var(--soft);
    }

    .search-button svg {
      width: 20px;
      height: 20px;
    }

    .cta {
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 18px;
      border-radius: 5px;
      color: var(--white);
      background: var(--primary);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 1px;
      transition: background 0.2s ease, transform 0.2s ease;
    }

    .cta:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    .mobile-toggle {
      display: none;
    }

    .mobile-drawer {
      display: none;
    }


    @media (max-width: 1180px) {
      .nav-link,
      .nav-trigger {
        padding: 0 9px;
        font-size: 14px;
      }

      .nav-link::after,
      .nav-trigger::after {
        right: 9px;
        left: 9px;
      }

      .header-inner {
        gap: 18px;
      }

      .brand-en {
        display: none;
      }
    }

    @media (max-width: 980px) {
      .topbar {
        display: none;
      }

      .container {
        width: min(calc(100% - 28px), var(--container));
      }

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

      .desktop-nav,
      .search-button {
        display: none;
      }

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

      .cta {
        min-height: 38px;
        padding: 0 13px;
        font-size: 13px;
      }

      .mobile-toggle {
        width: 42px;
        height: 42px;
        display: grid;
        place-items: center;
        border-radius: 50%;
        transition: background 0.2s ease;
      }

      .mobile-toggle:hover {
        background: var(--soft);
      }

      .menu-lines,
      .menu-lines::before,
      .menu-lines::after {
        width: 20px;
        height: 2px;
        display: block;
        background: var(--text);
        transition: transform 0.25s ease, opacity 0.25s ease;
      }

      .menu-lines {
        position: relative;
      }

      .menu-lines::before,
      .menu-lines::after {
        content: "";
        position: absolute;
        left: 0;
      }

      .menu-lines::before {
        top: -6px;
      }

      .menu-lines::after {
        top: 6px;
      }

      .mobile-toggle.is-active .menu-lines {
        background: transparent;
      }

      .mobile-toggle.is-active .menu-lines::before {
        top: 0;
        transform: rotate(45deg);
      }

      .mobile-toggle.is-active .menu-lines::after {
        top: 0;
        transform: rotate(-45deg);
      }

      .mobile-drawer {
        max-height: 0;
        display: block;
        overflow: hidden;
        background: var(--white);
        border-top: 1px solid var(--line);
        transition: max-height 0.35s ease;
      }

      .mobile-drawer.is-open {
        max-height: calc(100vh - 68px);
        overflow-y: auto;
      }

      .mobile-nav {
        padding: 10px 14px 24px;
      }

      .mobile-list {
        list-style: none;
      }

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

      .mobile-link {
        min-height: 52px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 15px;
        font-weight: 600;
      }

      details summary {
        list-style: none;
        cursor: pointer;
      }

      details summary::-webkit-details-marker {
        display: none;
      }

      .mobile-chevron {
        width: 14px;
        height: 14px;
        transition: transform 0.2s ease;
      }

      details[open] .mobile-chevron {
        transform: rotate(180deg);
      }

      .mobile-submenu {
        padding: 0 0 12px 12px;
        list-style: none;
      }

      .mobile-submenu a {
        display: block;
        padding: 9px 0;
        color: var(--muted);
        font-size: 14px;
      }

      .mobile-submenu a:hover {
        color: var(--primary);
      }

      .mobile-contact {
        display: grid;
        gap: 10px;
        padding-top: 18px;
      }

      .mobile-contact .cta {
        min-height: 44px;
      }

      .phone {
        padding: 10px 0;
        color: var(--primary);
        text-align: center;
        font-size: 14px;
        font-weight: 700;
      }
    }

    @media (max-width: 520px) {
      .brand-logo {
        width: min(230px, 64vw);
        max-height: 54px;
      }

      .brand-mark {
        width: 36px;
        height: 36px;
        font-size: 15px;
      }

      .brand-name {
        font-size: 17px;
      }

      .header-actions .cta {
        padding: 0 11px;
        letter-spacing: 0;
      }

      .hero {
        min-height: 470px;
      }
    }