/* ===== 全局重置 ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    }
    body {
      background: #f5f7fa;
      padding-bottom: 0;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* ===== topbar ===== */
    .topbar {
      background: #1a1e2b;
      color: #bbb;
      font-size: 14px;
      padding: 8px 0;
      border-bottom: 1px solid #2d3345;
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
    }
    .topbar .contact span {
      margin-right: 20px;
    }
    .topbar .contact i {
      margin-right: 6px;
      color: #f0b34b;
    }
    .topbar .lang a {
      color: #ddd;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .topbar .lang a i {
      color: #f0b34b;
    }
    #clock {
      display: inline-block;
      background: #2a2f40;
      padding: 2px 12px;
      border-radius: 20px;
      color: #fff;
      font-weight: 500;
      letter-spacing: 0.5px;
      font-size: 14px;
    }

    /* ===== 友情链接 ===== */
    .friend-links {
      background: #f3efe7;
      padding: 25px 0 30px;
      border-top: 1px solid #ddd6c8;
      border-bottom: 1px solid #ddd6c8;
    }
    .friend-links .links {
      display: flex;
      flex-wrap: wrap;
      gap: 20px 36px;
      align-items: center;
      justify-content: center;
    }
    .friend-links .links a {
      color: #4f4637;
      font-size: 15px;
      transition: 0.2s;
      border-bottom: 1px dotted transparent;
      text-decoration: none;
    }
    .friend-links .links a:hover {
      color: #c9a86c;
      border-bottom-color: #c9a86c;
    }
    .friend-links .links a i {
      margin-right: 6px;
      color: #c9a86c;
    }

    /* ===== PC底部 (移动端隐藏) ===== */
    .footer {
      background: #0b0b12;
      color: #b8aa8f;
      padding: 40px 0 20px;
      border-top: 2px solid #2a2a3a;
    }
    .footer .container {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 30px;
    }
    .footer .col {
      flex: 1 1 160px;
    }
    .footer .col h5 {
      color: #e8d5a3;
      font-size: 16px;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }
    .footer .col a {
      display: block;
      color: #b8aa8f;
      margin-bottom: 10px;
      font-size: 14px;
      text-decoration: none;
      transition: 0.2s;
    }
    .footer .col a:hover {
      color: #e8d5a3;
      padding-left: 4px;
    }
    .footer .copyright {
      text-align: center;
      padding-top: 30px;
      border-top: 1px solid #1f1f2b;
      margin-top: 20px;
      width: 100%;
      font-size: 13px;
      color: #6a5f4c;
    }

    /* ===== 返回顶部按钮 ===== */
    .gotop {
      position: fixed;
      bottom: 80px;
      right: 15px;
      width: 45px;
      height: 45px;
      background: rgba(0,0,0,0.7);
      color: #fff;
      border-radius: 50%;
      text-align: center;
      line-height: 45px;
      font-size: 24px;
      text-decoration: none;
      z-index: 999;
    }
    .gotop:hover {
      background: rgba(0,0,0,0.9);
    }

    /* ============================================================
       移动端固定底部导航 (仅移动端显示，PC端隐藏)
       ============================================================ */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: #ffffff;
      box-shadow: 0 -2px 12px rgba(0,0,0,0.10);
      z-index: 9999;
      padding: 8px 0 env(safe-area-inset-bottom);
      border-top: 1px solid #eee8dc;
    }
    .mobile-bottom-nav .nav-items {
      display: flex;
      justify-content: space-around;
      align-items: center;
      max-width: 400px;
      margin: 0 auto;
    }
    .mobile-bottom-nav .nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-decoration: none;
      color: #5a6f84;
      font-size: 11px;
      gap: 2px;
      padding: 6px 12px;
      border-radius: 12px;
      transition: 0.2s;
      min-width: 56px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .mobile-bottom-nav .nav-item i {
      font-size: 22px;
      color: #5a6f84;
      transition: 0.2s;
    }
    .mobile-bottom-nav .nav-item span {
      font-weight: 500;
    }
    .mobile-bottom-nav .nav-item:hover {
      background: #f0f2f5;
    }
    .mobile-bottom-nav .nav-item.active i,
    .mobile-bottom-nav .nav-item.active span {
      color: #c12b2b;
    }

    /* 预订电话按钮 (特殊样式) */
    .mobile-bottom-nav .nav-item.phone-btn {
      background: #c12b2b;
      color: #fff;
      padding: 6px 18px;
      border-radius: 30px;
      flex-direction: row;
      gap: 8px;
    }
    .mobile-bottom-nav .nav-item.phone-btn i,
    .mobile-bottom-nav .nav-item.phone-btn span {
      color: #fff;
    }
    .mobile-bottom-nav .nav-item.phone-btn:hover {
      background: #a01f1f;
    }

    /* ============================================================
       响应式控制
       ============================================================ */

    /* --- 移动端 (≤820px) --- */
    @media screen and (max-width: 820px) {
      /* 显示移动端底部导航 */
      .mobile-bottom-nav {
        display: block !important;
      }
      body {
        padding-bottom: 75px;
      }
      .gotop {
        bottom: 90px;
      }

      /* ★★★ 隐藏PC底部 ★★★ */
      .footer {
        display: none !important;
      }
    }

    /* 小屏手机微调 */
    @media screen and (max-width: 480px) {
      .mobile-bottom-nav .nav-item {
        font-size: 10px;
        min-width: 48px;
        padding: 4px 6px;
      }
      .mobile-bottom-nav .nav-item i {
        font-size: 18px;
      }
      .mobile-bottom-nav .nav-item.phone-btn {
        padding: 4px 12px;
        font-size: 12px;
      }
      body {
        padding-bottom: 68px;
      }
      .gotop {
        bottom: 80px;
        width: 38px;
        height: 38px;
        line-height: 38px;
        font-size: 20px;
      }
    }

    /* --- PC端 (>820px) --- */
    @media screen and (min-width: 821px) {
      /* 隐藏移动端底部导航 */
      .mobile-bottom-nav {
        display: none !important;
      }
      /* PC底部正常显示 */
      .footer {
        display: block !important;
      }
      body {
        padding-bottom: 0;
      }
      .gotop {
        bottom: 80px;
      }
    }