/* roulang page: index */
:root {
      --primary-green: #0A8F3C;
      --primary-green-hover: #087a32;
      --dark-night: #0B0E14;
      --accent-yellow: #F5C518;
      --bg-light: #F4F7F5;
      --card-bg: #FFFFFF;
      --border-light: #E0E5E2;
      --text-main: #1a1e24;
      --text-secondary: #5a5f66;
      --text-muted: #8a9199;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
      --font-mono: 'Roboto Mono', 'SF Mono', 'Cascadia Code', monospace;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
      --nav-height: 56px;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      padding-top: var(--nav-height);
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease, background-color 0.2s ease;
    }

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

    .container {
      max-width: 1140px;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航栏 */
    #nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--nav-height);
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      box-shadow: 0 0.5px 0 rgba(0,0,0,0.08);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
    }

    .nav-left {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .logo {
      font-weight: 700;
      font-size: 1.3rem;
      color: var(--dark-night);
      display: flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }
    .logo i {
      color: var(--primary-green);
      font-size: 1.8rem;
    }

    .nav-links {
      display: flex;
      gap: 24px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      color: var(--dark-night);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 4px 0;
      border-bottom: 2px solid transparent;
      transition: border-color 0.2s, color 0.2s;
    }
    .nav-links a:hover {
      color: var(--primary-green);
      border-bottom-color: var(--primary-green);
    }

    .nav-right .btn-free {
      background: var(--primary-green);
      color: white;
      border-radius: 50px;
      padding: 8px 20px;
      font-weight: 600;
      font-size: 0.9rem;
      border: none;
      transition: background 0.2s, box-shadow 0.2s;
    }
    .nav-right .btn-free:hover {
      background: var(--primary-green-hover);
      box-shadow: 0 4px 12px rgba(10, 143, 60, 0.3);
      color: white;
    }

    .hamburger {
      display: none;
      font-size: 1.6rem;
      background: none;
      border: none;
      color: var(--dark-night);
      cursor: pointer;
    }

    /* 移动端导航菜单 */
    @media (max-width: 768px) {
      .nav-links, .nav-right {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .mobile-menu {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(11, 14, 20, 0.95);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 24px 20px;
        gap: 16px;
        z-index: 999;
      }
      .mobile-menu.active {
        display: flex;
      }
      .mobile-menu a {
        color: white;
        font-size: 1.1rem;
        font-weight: 500;
        border-bottom: 1px solid rgba(255,255,255,0.15);
        padding-bottom: 8px;
      }
    }

    /* Hero 分屏 */
    #hero {
      display: flex;
      align-items: center;
      min-height: 85vh;
      background: var(--bg-light);
      margin-top: 0;
    }
    .hero-grid {
      display: flex;
      width: 100%;
      gap: 40px;
    }
    .hero-left {
      flex: 1 1 50%;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .hero-right {
      flex: 1 1 50%;
      background: linear-gradient(135deg, #0B0E14 0%, #1a2a1f 100%);
      border-radius: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 40px 20px;
      position: relative;
      overflow: hidden;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 380px;
    }
    .score-card {
      background: rgba(11, 14, 20, 0.8);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 24px;
      padding: 28px 36px;
      text-align: center;
      color: white;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .teams {
      font-size: 1.4rem;
      font-weight: 600;
      letter-spacing: 1px;
    }
    .score {
      font-family: var(--font-mono);
      font-size: 4rem;
      font-weight: 700;
      color: var(--accent-yellow);
      margin: 8px 0;
    }
    .live-badge {
      background: #e03a3a;
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: bold;
      letter-spacing: 0.5px;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.6; } 100% { opacity: 1; } }

    h1 {
      font-size: 3rem;
      font-weight: 700;
      color: var(--dark-night);
      line-height: 1.2;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 1.15rem;
      color: var(--text-secondary);
      margin-bottom: 28px;
      max-width: 450px;
    }
    .btn-primary-green {
      background: var(--primary-green);
      border: none;
      color: white;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      transition: 0.2s;
    }
    .btn-primary-green:hover {
      background: var(--primary-green-hover);
      box-shadow: 0 8px 18px rgba(10,143,60,0.35);
    }
    .btn-ghost {
      background: transparent;
      border: 1.5px solid var(--dark-night);
      color: var(--dark-night);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
    }
    .btn-ghost:hover {
      background: rgba(10,143,60,0.08);
      border-color: var(--primary-green);
    }

    @media (max-width: 768px) {
      .hero-grid {
        flex-direction: column;
      }
      h1 {
        font-size: 2.2rem;
      }
      .hero-right {
        min-height: 280px;
      }
    }

    section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--dark-night);
      margin-bottom: 12px;
    }
    .section-sub {
      color: var(--primary-green);
      font-weight: 600;
      font-size: 0.9rem;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .feature-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      height: 100%;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .feature-icon {
      font-size: 2rem;
      color: var(--primary-green);
      margin-bottom: 18px;
    }

    .scenario-card {
      background: #F0F4F1;
      border-radius: 16px;
      overflow: hidden;
    }
    .case-number {
      font-family: var(--font-mono);
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--accent-yellow);
    }

    .pricing-card {
      background: white;
      border-radius: 16px;
      padding: 32px 24px;
      border: 1px solid var(--border-light);
      text-align: center;
      transition: 0.2s;
    }
    .pricing-card.recommended {
      border: 2px solid var(--primary-green);
      position: relative;
    }
    .badge-popular {
      background: var(--accent-yellow);
      color: #0B0E14;
      font-weight: 700;
      font-size: 0.75rem;
      padding: 4px 12px;
      border-radius: 20px;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }

    .accordion-button:not(.collapsed) {
      background-color: #F9FBF9;
      color: var(--primary-green);
      font-weight: 600;
    }

    #cta {
      background: var(--dark-night);
      background-image: radial-gradient(circle at 30% 40%, #1a2a1f 0%, #0B0E14 80%);
      color: white;
      border-radius: 0;
    }
    footer {
      background: var(--dark-night);
      color: #B0B5B0;
    }
    footer a:hover {
      color: var(--accent-yellow);
    }