/* roulang page: index */
:root {
      --primary: #F15A24;
      --primary-dark: #d14a1a;
      --secondary: #1A1A1A;
      --accent: #00E676;
      --bg-warm: #F9F9F9;
      --bg-cream: #FFF8F0;
      --text-main: #1A1A1A;
      --text-muted: #5A5A5A;
      --border-light: rgba(0,0,0,0.06);
      --shadow-card: 0 20px 40px rgba(241, 90, 36, 0.08);
      --shadow-hover: 0 28px 48px rgba(241, 90, 36, 0.18);
      --radius-xl: 24px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
      --font-sans: 'Inter', '思源黑体', system-ui, -apple-system, sans-serif;
      --transition: all 0.25s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background: linear-gradient(180deg, var(--bg-cream) 0%, var(--bg-warm) 100%);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.9);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.02);
      z-index: 100;
      transition: var(--transition);
    }
    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      letter-spacing: -0.5px;
    }
    .logo i {
      font-size: 2rem;
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      gap: 36px;
      align-items: center;
      list-style: none;
    }
    .nav-links a {
      text-decoration: none;
      font-weight: 500;
      color: var(--secondary);
      font-size: 1rem;
      padding: 8px 0;
      position: relative;
      transition: var(--transition);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 3px;
      background: var(--primary);
      transition: width 0.2s ease;
      border-radius: 2px;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--primary);
      color: white !important;
      padding: 10px 22px !important;
      border-radius: 30px;
      font-weight: 600;
      transition: var(--transition);
      box-shadow: 0 6px 16px rgba(241,90,36,0.3);
    }
    .nav-cta:hover {
      background: var(--secondary) !important;
      box-shadow: 0 10px 20px rgba(26,26,26,0.25);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      background: none;
      border: none;
      color: var(--secondary);
      cursor: pointer;
    }

    /* 英雄区 */
    .hero {
      padding: 140px 0 100px;
      display: flex;
      align-items: center;
      gap: 60px;
    }
    .hero-left {
      flex: 1;
    }
    .hero-left h1 {
      font-size: 3.6rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--secondary);
      margin-bottom: 1.5rem;
    }
    .hero-left h1 span {
      color: var(--accent);
      background: rgba(0,230,118,0.12);
      padding: 0 6px;
      border-radius: 8px;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 2rem;
      max-width: 500px;
    }
    .badge-group {
      display: flex;
      gap: 16px;
      margin-bottom: 2.2rem;
      flex-wrap: wrap;
    }
    .badge {
      background: rgba(26,26,26,0.08);
      backdrop-filter: blur(8px);
      padding: 10px 20px;
      border-radius: 40px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--secondary);
      font-size: 0.95rem;
    }
    .badge i {
      color: var(--accent);
      font-size: 1.2rem;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      border: none;
      color: white;
      padding: 14px 34px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 18px rgba(241,90,36,0.35);
      text-decoration: none;
    }
    .btn-primary:hover {
      background: var(--secondary);
      transform: translateX(4px);
      box-shadow: 0 12px 24px rgba(26,26,26,0.3);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      padding: 14px 34px;
      border-radius: var(--radius-md);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
      text-decoration: none;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .hero-right {
      flex: 1;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: var(--radius-xl);
      height: 360px;
      position: relative;
      box-shadow: var(--shadow-card);
      display: flex;
      align-items: flex-end;
      padding: 24px;
    }
    .live-card {
      background: rgba(26,26,26,0.85);
      backdrop-filter: blur(10px);
      border-radius: 18px;
      padding: 20px;
      color: white;
      display: flex;
      gap: 24px;
      align-items: center;
      font-family: var(--font-mono);
      width: 100%;
      max-width: 280px;
    }
    .live-score {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--accent);
    }

    /* 板块通用 */
    .section {
      padding: 90px 0;
    }
    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--secondary);
    }
    .section-sub {
      color: var(--text-muted);
      margin-bottom: 48px;
      font-size: 1.15rem;
    }

    /* 亮点网格 非对称 */
    .features-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .feature-card {
      background: white;
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      border: 1px solid var(--border-light);
      display: flex;
      gap: 20px;
    }
    .feature-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
    }
    .feature-icon {
      font-size: 2.4rem;
      color: var(--primary);
      background: rgba(241,90,36,0.08);
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
    }
    .feature-text h3 {
      font-size: 1.4rem;
      margin-bottom: 8px;
    }
    .feature-text p {
      color: var(--text-muted);
    }

    /* 案例瀑布流 */
    .cases-wall {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      justify-content: center;
    }
    .case-card {
      background: white;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      flex: 1 1 280px;
      max-width: 360px;
      transition: var(--transition);
    }
    .case-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .case-info {
      padding: 24px;
    }

    /* 方案对比 */
    .compare-table {
      display: flex;
      gap: 24px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .plan {
      background: white;
      border-radius: var(--radius-xl);
      padding: 36px;
      flex: 1 1 260px;
      box-shadow: var(--shadow-card);
      position: relative;
    }
    .plan.recommended {
      border: 2px solid var(--primary);
      transform: scale(1.02);
    }
    .plan h3 {
      font-size: 1.7rem;
    }
    .price {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* FAQ + 联系 */
    .faq-contact {
      display: flex;
      gap: 50px;
    }
    .faq-list {
      flex: 1.2;
    }
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      padding: 20px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .faq-item.active {
      background: #FFF2EA;
    }
    .contact-form {
      flex: 1;
      background: white;
      border-radius: var(--radius-xl);
      padding: 36px;
    }
    .contact-form input, .contact-form textarea {
      width: 100%;
      padding: 14px;
      margin-bottom: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #ddd;
      font-family: inherit;
    }
    .footer {
      background: var(--secondary);
      color: #ccc;
      padding: 48px 0 24px;
      text-align: center;
    }
    .footer-logo {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    @media (max-width: 1024px) {
      .hero {
        flex-direction: column;
        text-align: center;
      }
      .hero-left h1 {
        font-size: 2.8rem;
      }
      .features-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .faq-contact {
        flex-direction: column;
      }
      .compare-table {
        flex-direction: column;
      }
    }