/* roulang page: index */
:root {
      --deep-space: #0B0C10;
      --deep-purple: #1A0F2E;
      --aurora-green: #00E5A8;
      --aurora-light: #2EE6B8;
      --star-gold: #F5B042;
      --light-bg: #F4F2F7;
      --card-bg: #FFFFFF;
      --text-primary: #2D2A3A;
      --text-secondary: #6B6880;
      --border-light: #E0DCE8;
      --radius-lg: 12px;
      --radius-sm: 8px;
      --radius-pill: 30px;
      --shadow-card: 0 4px 20px rgba(10, 8, 30, 0.08);
      --shadow-hover: 0 8px 30px rgba(10, 8, 30, 0.15);
      --transition: 0.3s ease;
      --font-heading: 'Segoe UI', '站酷高端黑', 'Noto Sans SC', '黑体', 'Microsoft YaHei', sans-serif;
      --font-body: 'Noto Serif SC', '思源宋体', '宋体', 'Georgia', serif;
      --font-number: 'DIN Alternate', 'Rajdhani', 'Inter', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      color: var(--text-primary);
      background-color: #fff;
      margin: 0;
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      font-weight: 700;
      letter-spacing: -0.3px;
      margin-top: 0;
    }

    h1 {
      font-size: 2.8rem;
      line-height: 1.2;
    }

    h2 {
      font-size: 2rem;
      margin-bottom: 1rem;
    }

    h3 {
      font-size: 1.4rem;
      margin-bottom: 0.5rem;
    }

    p {
      color: var(--text-secondary);
      margin-bottom: 1.2rem;
    }

    a {
      color: var(--aurora-green);
      transition: var(--transition);
      text-decoration: none;
    }

    a:hover {
      color: var(--star-gold);
      text-decoration: underline;
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 导航双层样式 */
    .header-sticky {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: var(--deep-space);
      border-bottom: 1px solid rgba(0, 229, 168, 0.2);
      backdrop-filter: blur(8px);
    }

    .nav-top-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 20px;
      flex-wrap: wrap;
    }

    .logo-brand {
      font-family: var(--font-heading);
      font-size: 1.6rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--aurora-green), var(--star-gold));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .logo-brand i {
      background: none;
      -webkit-text-fill-color: var(--aurora-green);
      font-size: 1.2rem;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .search-icon {
      color: #B0ADC8;
      font-size: 1.2rem;
      cursor: pointer;
      transition: var(--transition);
    }

    .search-icon:hover {
      color: var(--aurora-green);
    }

    .btn-quick-quote {
      background: linear-gradient(135deg, var(--aurora-green), var(--star-gold));
      color: white;
      border-radius: var(--radius-pill);
      padding: 8px 20px;
      font-weight: 600;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
      display: inline-block;
    }

    .btn-quick-quote:hover {
      background: linear-gradient(135deg, var(--star-gold), var(--aurora-green));
      box-shadow: 0 6px 18px rgba(0, 229, 168, 0.4);
      color: white;
    }

    .channel-tabs {
      display: flex;
      gap: 8px;
      padding: 8px 20px 12px;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
      -ms-overflow-style: none;
      background: linear-gradient(90deg, transparent 0%, rgba(11,12,16,0.9) 95%);
    }

    .channel-tabs::-webkit-scrollbar {
      display: none;
    }

    .pill-tab {
      background: transparent;
      color: #6B6880;
      border-radius: 20px;
      padding: 6px 16px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: var(--transition);
      text-decoration: none;
      display: inline-block;
    }

    .pill-tab:hover {
      color: var(--aurora-green);
      background: rgba(0, 229, 168, 0.08);
    }

    .pill-tab.active {
      background: rgba(0, 229, 168, 0.15);
      color: var(--aurora-green);
    }

    /* Hero 双栏 */
    .hero-section {
      background-color: var(--deep-space);
      padding: 60px 0;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
    }

    .hero-left {
      flex: 1 1 45%;
      padding-right: 2rem;
    }

    .hero-right {
      flex: 1 1 55%;
      position: relative;
    }

    .hero-title {
      color: white;
      font-size: 3rem;
      margin-bottom: 1rem;
    }

    .hero-sub {
      color: #B0ADC8;
      font-size: 1.2rem;
      margin-bottom: 2rem;
    }

    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--aurora-green), var(--star-gold));
      border: none;
      color: white;
      border-radius: var(--radius-pill);
      padding: 14px 32px;
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--star-gold), var(--aurora-green));
      box-shadow: 0 8px 25px rgba(0, 229, 168, 0.5);
      color: white;
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--aurora-green);
      color: var(--aurora-green);
      border-radius: var(--radius-pill);
      padding: 14px 32px;
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
    }

    .btn-outline:hover {
      background: var(--aurora-green);
      color: var(--deep-space);
    }

    .hero-visual {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 20px;
      height: 400px;
      position: relative;
      overflow: hidden;
      box-shadow: inset 0 0 50px rgba(0,0,0,0.5);
    }

    .star-orbit {
      position: absolute;
      top: 20%;
      left: 15%;
      width: 70%;
      height: 60%;
      border: 1px dashed rgba(0,229,168,0.3);
      border-radius: 50%;
      animation: spin 20s linear infinite;
      pointer-events: none;
    }

    .orbit-dot {
      position: absolute;
      width: 8px;
      height: 8px;
      background: var(--star-gold);
      border-radius: 50%;
      box-shadow: 0 0 15px var(--aurora-green);
    }

    @keyframes spin {
      from { transform: rotate(0deg); }
      to { transform: rotate(360deg); }
    }

    /* 优势网格 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .adv-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }

    .adv-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .adv-card i {
      font-size: 2rem;
      color: var(--aurora-green);
      margin-bottom: 12px;
    }

    /* 产品卡片流 */
    .scroll-cards {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding: 20px 0 30px;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
    }

    .product-card {
      flex: 0 0 320px;
      background: white;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      scroll-snap-align: start;
    }

    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    .product-card img {
      border-radius: 12px 12px 0 0;
      height: 200px;
      object-fit: cover;
    }

    .card-content {
      padding: 20px;
    }

    /* 对比栏 */
    .compare-row {
      display: flex;
      gap: 40px;
      margin-top: 30px;
    }

    .compare-col {
      flex: 1;
      background: white;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-card);
    }

    .divider-star {
      text-align: center;
      color: var(--star-gold);
      font-size: 2rem;
    }

    /* 瀑布流案例 */
    .case-grid {
      columns: 3 280px;
      column-gap: 24px;
      margin-top: 30px;
    }

    .case-card {
      break-inside: avoid;
      margin-bottom: 24px;
      background: white;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }

    .case-card img {
      width: 100%;
    }

    /* FAQ */
    .accordion-item {
      border-bottom: 1px solid var(--border-light);
    }

    .accordion-title {
      font-weight: 600;
      padding: 16px 0;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 联系表单 */
    .input-line {
      border: none;
      border-bottom: 2px solid var(--border-light);
      padding: 12px 0;
      width: 100%;
      background: transparent;
      transition: var(--transition);
      font-family: var(--font-body);
    }

    .input-line:focus {
      outline: none;
      border-bottom-color: var(--aurora-green);
    }

    .footer-dark {
      background: var(--deep-space);
      color: #B0ADC8;
      padding: 60px 0 20px;
    }

    @media (max-width: 1024px) {
      .advantages-grid { grid-template-columns: repeat(2, 1fr); }
      .case-grid { columns: 2; }
    }

    @media (max-width: 640px) {
      h1 { font-size: 2rem; }
      .hero-section { flex-direction: column; }
      .hero-left { padding-right: 0; margin-bottom: 30px; }
      .advantages-grid { grid-template-columns: 1fr; }
      .compare-row { flex-direction: column; }
      .case-grid { columns: 1; }
    }