/* roulang page: index */
:root {
      --primary: #0A58CA;
      --primary-gradient: linear-gradient(135deg, #0A58CA 0%, #00B4D8 100%);
      --accent-green: #10B981;
      --accent-orange: #F59E0B;
      --dark-navy: #0F172A;
      --slate-800: #1E293B;
      --slate-600: #475569;
      --slate-500: #64748B;
      --slate-100: #F1F5F9;
      --bg-light: #F8FAFC;
      --white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-subtle: 0 4px 20px -2px rgba(10, 88, 202, 0.05);
      --shadow-hover: 0 20px 35px -5px rgba(10, 88, 202, 0.12);
    }

    * { box-sizing: border-box; }
    html, body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", PingFang SC, "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: #334155;
      background-color: var(--white);
      line-height: 1.7;
      scroll-behavior: smooth;
    }

    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; display: block; }

    /* 顶部辅助条 */
    .top-utility-bar {
      background: #0B132B;
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .lang-pill {
      background: rgba(255,255,255,0.12);
      border-radius: 999px;
      padding: 2px 10px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #F8FAFC;
      font-weight: 500;
      font-size: 0.75rem;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 18px rgba(0,0,0,0.03);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.85rem 0;
    }
    .brand-logo {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      letter-spacing: -0.02em;
    }
    .brand-logo i {
      font-size: 1.6rem;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-menu {
      display: flex;
      gap: 1.75rem;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-menu li a {
      font-size: 0.9375rem;
      font-weight: 600;
      color: #1E293B;
      padding: 0.4rem 0.2rem;
      position: relative;
    }
    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: var(--primary);
    }
    .nav-menu li a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .btn-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.65rem 1.4rem;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
      text-align: center;
      min-height: 44px;
    }
    .btn-pill-primary {
      background: var(--primary-gradient);
      color: var(--white);
      box-shadow: 0 6px 16px rgba(10, 88, 202, 0.25);
    }
    .btn-pill-primary:hover {
      color: var(--white);
      transform: translateY(-2px);
      box-shadow: 0 10px 22px rgba(10, 88, 202, 0.35);
    }
    .btn-pill-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }
    .btn-pill-outline:hover {
      background: rgba(10, 88, 202, 0.05);
      color: var(--primary);
    }
    .btn-pill-white {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: 0 4px 14px rgba(0,0,0,0.1);
    }
    .btn-pill-white:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
    }

    /* 板块通用 */
    .section-spacing {
      padding: 5.5rem 0;
      position: relative;
    }
    .bg-light-alt {
      background-color: var(--bg-light);
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.9rem;
      border-radius: 999px;
      background: rgba(10, 88, 202, 0.08);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--dark-navy);
      line-height: 1.3;
      margin-bottom: 0.9rem;
      letter-spacing: -0.01em;
    }
    .section-lead {
      font-size: 1.05rem;
      color: var(--slate-600);
      max-width: 720px;
      margin-bottom: 2.75rem;
    }

    /* 圆角大卡 */
    .feature-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 2.2rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-subtle);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(10, 88, 202, 0.3);
    }
    .feature-card .card-icon-box {
      width: 58px;
      height: 58px;
      border-radius: var(--radius-md);
      background: rgba(10, 88, 202, 0.07);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 1.35rem;
    }

    /* 蓝图专属 Hero：预约到店、服务卖点、时段选择视觉面板 */
    .hero-section {
      background: linear-gradient(180deg, #F0F7FF 0%, #FFFFFF 100%), url('/assets/images/6db49029abf80ab8.png') center/cover no-repeat;
      padding: 4.5rem 0 5.5rem;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-content {
      padding-right: 1.5rem;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      color: var(--dark-navy);
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-desc {
      font-size: 1.1rem;
      line-height: 1.8;
      color: var(--slate-600);
      margin-bottom: 2.2rem;
    }
    .time-picker-panel {
      background: var(--white);
      border-radius: var(--radius-xl);
      padding: 2rem;
      box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.15);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }
    .panel-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1rem;
      margin-bottom: 1.25rem;
    }
    .date-pill-track {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 1.5rem;
      overflow-x: auto;
      padding-bottom: 0.35rem;
    }
    .date-pill {
      padding: 0.5rem 0.9rem;
      border-radius: var(--radius-sm);
      background: var(--slate-100);
      text-align: center;
      min-width: 65px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--slate-600);
      border: 1px solid transparent;
      cursor: pointer;
    }
    .date-pill.selected {
      background: var(--primary);
      color: var(--white);
      border-color: var(--primary);
    }
    .time-slot-matrix {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.75rem;
      margin-bottom: 1.5rem;
    }
    .slot-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0.65rem 0.5rem;
      text-align: center;
      background: #FAFBFD;
      cursor: pointer;
      transition: all 0.2s;
    }
    .slot-card:hover {
      border-color: var(--primary);
    }
    .slot-card.booked {
      background: #F1F5F9;
      color: #94A3B8;
      cursor: not-allowed;
      border-style: dashed;
    }
    .slot-card.active {
      background: rgba(10, 88, 202, 0.08);
      border-color: var(--primary);
      color: var(--primary);
      font-weight: 700;
    }
    .slot-card .time {
      font-size: 0.875rem;
      display: block;
    }
    .slot-card .status {
      font-size: 0.7rem;
      margin-top: 2px;
    }

    /* 参数表板块样式 */
    .spec-table-container {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-subtle);
      overflow: hidden;
    }
    .table-custom {
      width: 100%;
      margin: 0;
      border-collapse: collapse;
    }
    .table-custom th {
      background: #F8FAFC;
      color: var(--slate-800);
      font-weight: 700;
      padding: 1.15rem 1.25rem;
      text-align: left;
      border-bottom: 2px solid var(--border-color);
      font-size: 0.95rem;
    }
    .table-custom td {
      padding: 1.15rem 1.25rem;
      border-bottom: 1px solid var(--border-color);
      color: #334155;
      font-size: 0.9rem;
    }
    .table-custom tr:last-child td { border-bottom: none; }
    .table-custom tr:hover td { background-color: #F8FAFC; }

    /* 案例现场图文卡片 */
    .case-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
      transition: transform 0.3s ease;
      height: 100%;
    }
    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .case-img-wrap {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-content {
      padding: 1.75rem;
    }

    /* 交付流程线性轴 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-box {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 1.85rem 1.5rem;
      position: relative;
    }
    .step-num-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      background: var(--primary-gradient);
      color: var(--white);
      font-weight: 800;
      font-size: 1.1rem;
      border-radius: 50%;
      margin-bottom: 1.25rem;
    }

    /* 深色沉浸中控区 */
    .dark-showcase-wrap {
      background: var(--dark-navy);
      color: var(--white);
      padding: 5.5rem 0;
      border-radius: var(--radius-xl);
    }
    .dark-ui-mockup {
      background: #1E293B;
      border-radius: var(--radius-lg);
      border: 1px solid #334155;
      padding: 1.5rem;
      box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    }
    .mock-header {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid #334155;
      padding-bottom: 0.85rem;
      margin-bottom: 1rem;
    }
    .mock-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.75rem;
    }
    .mock-item {
      background: #0F172A;
      border-radius: var(--radius-sm);
      padding: 0.85rem;
      border: 1px solid rgba(255,255,255,0.05);
    }

    /* 数据里程碑徽章条 */
    .milestone-bar {
      background: linear-gradient(135deg, #0A58CA 0%, #0284C7 100%);
      border-radius: var(--radius-xl);
      padding: 3.5rem 2rem;
      color: var(--white);
      box-shadow: 0 15px 35px -5px rgba(10, 88, 202, 0.3);
    }
    .stat-number {
      font-size: 3.1rem;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 0.5rem;
      font-feature-settings: "tnum";
    }

    /* 合作伙伴与生态矩阵 */
    .partner-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 90px;
      font-weight: 700;
      color: var(--slate-600);
      transition: all 0.25s ease;
    }
    .partner-card:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-subtle);
    }

    /* 手风琴常见问题 */
    .accordion-item-custom {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      background: var(--white);
      overflow: hidden;
    }
    .accordion-trigger {
      padding: 1.25rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--dark-navy);
      background: var(--white);
    }
    .accordion-body-text {
      padding: 0 1.5rem 1.25rem;
      color: var(--slate-600);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 最终在线询盘与订购表单 */
    .inquiry-panel {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-xl);
      padding: 3.5rem 3rem;
      color: var(--white);
      box-shadow: 0 20px 45px rgba(15, 23, 42, 0.25);
    }
    .form-control-custom {
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      padding: 0.75rem 1rem;
      width: 100%;
      height: 48px;
      margin-bottom: 1.15rem;
    }
    .form-control-custom:focus {
      background: rgba(255, 255, 255, 0.12);
      border-color: #00B4D8;
      outline: none;
      color: #FFFFFF;
    }
    select.form-control-custom option {
      background: #1E293B;
      color: #FFFFFF;
    }

    /* 页脚 */
    .site-footer {
      background: #0B132B;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-title {
      color: var(--white);
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 1.4rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a:hover {
      color: #00B4D8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 3.5rem;
      padding-top: 2rem;
      text-align: center;
      font-size: 0.8125rem;
    }

    @media (max-width: 1024px) {
      .hero-h1 { font-size: 2.35rem; }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .nav-menu { display: none; }
    }
    @media (max-width: 640px) {
      .section-spacing { padding: 3.75rem 0; }
      .hero-h1 { font-size: 1.95rem; }
      .section-title { font-size: 1.7rem; }
      .process-timeline { grid-template-columns: 1fr; }
      .time-slot-matrix { grid-template-columns: repeat(2, 1fr); }
      .inquiry-panel { padding: 2rem 1.25rem; }
      .top-utility-bar { display: none; }
    }