/* roulang page: index */
/* ----- 设计变量与全局样式 ----- */
    :root {
      --primary-orange: #F04E23;
      --primary-orange-hover: #D03E1A;
      --deep-blue-black: #1B1E2A;
      --data-cyan: #00B4D8;
      --final-yellow: #FFD000;
      --text-dark: #2C2F3A;
      --text-secondary: #6B7280;
      --bg-light: #F8F9FA;
      --white: #FFFFFF;
      --border-light: #E5E7EB;
      --card-shadow: 0 2px 8px rgba(27, 30, 42, 0.06);
      --card-shadow-hover: 0 8px 24px rgba(27, 30, 42, 0.12);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-badge: 6px;
      --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
      --transition: 0.25s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      font-size: 16px;
      line-height: 1.6;
      color: var(--text-dark);
      background-color: var(--white);
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

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

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

    button, .button {
      cursor: pointer;
      font-family: inherit;
    }

    h1, h2, h3, h4, p {
      margin: 0;
    }

    h2 {
      font-size: 28px;
      line-height: 36px;
      font-weight: 700;
      color: var(--deep-blue-black);
      margin-bottom: 16px;
      letter-spacing: -0.2px;
    }

    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-subtitle {
      font-size: 18px;
      color: var(--text-secondary);
      text-align: center;
      margin-bottom: 32px;
    }

    /* ----- 导航栏 (Foundation Top Bar 定制) ----- */
    .custom-nav {
      background-color: var(--deep-blue-black);
      padding: 0;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .custom-nav .top-bar {
      background: transparent;
      padding: 0.5rem 0;
    }

    .custom-nav .top-bar-left .logo {
      display: flex;
      align-items: center;
      font-size: 24px;
      font-weight: 700;
      color: var(--white);
      letter-spacing: 1px;
      text-decoration: none;
    }

    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--primary-orange);
      border-radius: 4px;
      margin-right: 8px;
      position: relative;
    }

    .logo-icon::before, .logo-icon::after {
      content: '';
      position: absolute;
      width: 14px;
      height: 2px;
      background: white;
      transform: rotate(15deg);
      left: 6px;
    }
    .logo-icon::before { top: 10px; }
    .logo-icon::after { top: 20px; }

    .custom-nav .top-bar-right .menu li a {
      color: rgba(255,255,255,0.85);
      font-weight: 500;
      padding: 0.5rem 1rem;
      font-size: 15px;
      transition: color var(--transition);
    }

    .custom-nav .menu .active > a,
    .custom-nav .menu li a:hover {
      color: var(--primary-orange);
    }

    .nav-cta-button {
      background: var(--primary-orange);
      color: white !important;
      padding: 0.6rem 1.5rem !important;
      border-radius: var(--radius-btn);
      font-weight: 600;
      margin-left: 12px;
      transition: background var(--transition);
      white-space: nowrap;
    }

    .nav-cta-button:hover {
      background: var(--primary-orange-hover);
    }

    .status-badge {
      background: var(--data-cyan);
      color: white;
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      margin-left: 8px;
      font-weight: 600;
    }

    /* 移动端菜单调整 */
    @media (max-width: 640px) {
      .custom-nav .top-bar-right {
        width: 100%;
      }
      .custom-nav .menu {
        flex-wrap: wrap;
        justify-content: center;
      }
    }

    /* ----- 首屏 Hero ----- */
    #hero {
      background: var(--white);
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }

    #hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: -10%;
      width: 120%;
      height: 100%;
      background: repeating-linear-gradient(15deg, transparent, transparent 39px, rgba(0,180,216,0.04) 40px, rgba(0,180,216,0.04) 41px);
      pointer-events: none;
    }

    .hero-grid {
      display: flex;
      align-items: center;
      gap: 48px;
      position: relative;
      z-index: 2;
    }

    .hero-text {
      flex: 1;
    }

    .hero-text h1 {
      font-size: 40px;
      line-height: 1.2;
      font-weight: 800;
      color: var(--deep-blue-black);
      margin-bottom: 20px;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 32px;
      max-width: 480px;
    }

    .hero-badges {
      display: flex;
      gap: 16px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }

    .badge-item {
      background: var(--deep-blue-black);
      color: white;
      padding: 8px 20px;
      border-radius: 30px;
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
    }

    .badge-item span {
      color: var(--data-cyan);
      font-weight: 800;
      font-size: 20px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--primary-orange);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: background var(--transition), transform 0.1s;
      box-shadow: 0 4px 12px rgba(240,78,35,0.3);
    }

    .btn-primary:hover {
      background: var(--primary-orange-hover);
    }

    .btn-secondary {
      background: transparent;
      color: var(--primary-orange);
      border: 2px solid var(--primary-orange);
      padding: 12px 30px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: background var(--transition);
    }

    .btn-secondary:hover {
      background: rgba(240,78,35,0.08);
    }

    .hero-image {
      flex: 1;
      text-align: right;
    }

    .hero-image img {
      border-radius: var(--radius-card);
      box-shadow: var(--card-shadow-hover);
      max-width: 100%;
      height: auto;
    }

    @media (max-width: 768px) {
      .hero-grid {
        flex-direction: column;
        text-align: center;
      }
      .hero-text h1 {
        font-size: 32px;
      }
      .hero-badges, .hero-buttons {
        justify-content: center;
      }
      .hero-image {
        margin-top: 32px;
        text-align: center;
      }
    }

    /* ----- 核心优势 #features ----- */
    #features {
      background: var(--bg-light);
      padding: 80px 0;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: white;
      padding: 32px 24px;
      border-radius: var(--radius-card);
      box-shadow: var(--card-shadow);
      transition: transform var(--transition), box-shadow var(--transition);
      text-align: center;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
    }

    .feature-icon {
      width: 64px;
      height: 64px;
      background: rgba(240,78,35,0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      color: var(--primary-orange);
      font-size: 28px;
      transition: background var(--transition), color var(--transition);
    }

    .feature-card:hover .feature-icon {
      background: var(--primary-orange);
      color: white;
    }

    .feature-card h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .feature-card p {
      color: var(--text-secondary);
      line-height: 1.7;
    }

    @media (max-width: 768px) {
      .feature-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ----- 亮点数据 #highlights ----- */
    #highlights {
      padding: 80px 0;
    }

    .highlights-magazine {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 32px;
    }

    .score-cards {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .score-card {
      background: var(--deep-blue-black);
      padding: 20px;
      border-radius: var(--radius-card);
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: white;
      transition: border 0.2s;
      border: 1px solid transparent;
    }

    .score-card:hover {
      border-color: var(--data-cyan);
    }

    .team {
      font-weight: 600;
    }

    .score-number {
      font-family: var(--font-mono);
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-orange);
    }

    .status-dot {
      width: 10px;
      height: 10px;
      background: var(--data-cyan);
      border-radius: 50%;
      display: inline-block;
      margin-left: 8px;
      animation: pulse 1.5s infinite;
    }

    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(0,180,216,0.6); }
      70% { box-shadow: 0 0 0 8px rgba(0,180,216,0); }
      100% { box-shadow: 0 0 0 0 rgba(0,180,216,0); }
    }

    .stats-side {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .stat-item {
      text-align: center;
    }

    .stat-number {
      font-size: 48px;
      font-weight: 800;
      color: var(--primary-orange);
      line-height: 1.1;
    }

    .stat-label {
      color: var(--text-secondary);
      font-size: 16px;
    }

    @media (max-width: 768px) {
      .highlights-magazine {
        grid-template-columns: 1fr;
      }
    }

    /* ----- 合作案例 #cases (瀑布流) ----- */
    #cases {
      padding: 80px 0;
      background: var(--bg-light);
    }

    .masonry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      grid-auto-rows: masonry;
    }

    .case-card {
      background: white;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: transform var(--transition);
    }

    .case-card:hover {
      transform: translateY(-4px);
    }

    .case-img {
      height: 200px;
      overflow: hidden;
    }

    .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }

    .case-card:hover .case-img img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 20px;
    }

    .case-tag {
      display: inline-block;
      border: 1px solid var(--primary-orange);
      color: var(--primary-orange);
      padding: 2px 12px;
      border-radius: 20px;
      font-size: 12px;
      margin-bottom: 8px;
    }

    @media (max-width: 768px) {
      .masonry-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ----- 方案对比 #compare ----- */
    #compare {
      padding: 80px 0;
    }

    .compare-table {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .plan-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--card-shadow);
    }

    .plan-card.enterprise {
      background: #FEF3F0;
    }

    .plan-header {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 24px;
    }

    .plan-feature {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      color: var(--text-dark);
    }

    .plan-feature i {
      color: var(--primary-orange);
    }

    @media (max-width: 768px) {
      .compare-table {
        grid-template-columns: 1fr;
      }
    }

    /* ----- FAQ 手风琴 ----- */
    #faq {
      padding: 80px 0;
      background: var(--bg-light);
    }

    .accordion-title {
      font-weight: 600;
      font-size: 18px;
      background: white;
      border-radius: 8px;
      margin-bottom: 8px;
    }

    .accordion-content {
      background: #f4f5f7;
      border-left: 3px solid var(--primary-orange);
      padding: 16px 20px;
      margin-bottom: 8px;
    }

    /* ----- CTA 终阶 ----- */
    #cta-final {
      background: var(--deep-blue-black);
      padding: 80px 0;
      text-align: center;
    }

    #cta-final h2 {
      color: white;
      font-size: 32px;
    }

    #cta-final .btn-secondary {
      border-color: white;
      color: white;
    }

    /* ----- 页脚 ----- */
    footer {
      background: var(--deep-blue-black);
      color: rgba(255,255,255,0.7);
      padding: 60px 0 20px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }