/* roulang page: index */
:root {
      --primary-bg: #0B0E14;
      --secondary-bg: #131820;
      --card-bg: rgba(19, 24, 32, 0.9);
      --light-bg: #F4F6F9;
      --neon-green: #00F0A8;
      --alert-red: #FF4D6D;
      --warm-amber: #FFB347;
      --text-white: #FFFFFF;
      --text-gray: #B0B8C1;
      --text-muted: #6B7280;
      --text-dark: #0B0E14;
      --text-dark-secondary: #374151;
      --border-subtle: rgba(255, 255, 255, 0.05);
      --border-card: rgba(0, 240, 168, 0.15);
      --border-card-hover: rgba(0, 240, 168, 0.5);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 0 20px rgba(0, 240, 168, 0.5);
      --radius-lg: 16px;
      --radius-pill: 50px;
      --font-mono: 'Inter', 'Roboto', 'SF Mono', monospace;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --container-max: 1280px;
      --section-gap: 120px;
      --card-gap: 24px;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--primary-bg);
      color: var(--text-gray);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 40px;
    }

    h1, h2, h3, h4 {
      color: var(--text-white);
      font-weight: 700;
      line-height: 1.2;
    }

    h2 {
      font-size: 36px;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    h3 {
      font-size: 20px;
      font-weight: 600;
    }

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

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

    button, .btn {
      cursor: pointer;
      font-family: var(--font-sans);
      font-weight: 600;
      font-size: 16px;
      transition: all 0.25s ease;
      border: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .section-tag {
      color: var(--neon-green);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 12px;
      display: block;
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(11, 14, 20, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 40px;
    }

    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-white);
      letter-spacing: 1px;
    }
    .logo .highlight {
      color: var(--neon-green);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-gray);
      padding: 8px 0;
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--neon-green);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--neon-green);
    }

    .btn-primary {
      background: var(--neon-green);
      color: var(--text-dark);
      border-radius: var(--radius-pill);
      padding: 12px 28px;
      font-weight: 600;
    }
    .btn-primary:hover {
      background: #33F5BC;
      box-shadow: var(--shadow-glow);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--neon-green);
      color: var(--neon-green);
      border-radius: var(--radius-pill);
      padding: 12px 28px;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 168, 0.1);
    }

    .btn-alert {
      background: var(--alert-red);
      color: white;
      border-radius: var(--radius-pill);
      padding: 12px 28px;
    }
    .btn-alert:hover {
      background: #ff7b8a;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-white);
      font-size: 28px;
    }

    /* 移动端底部导航 */
    .bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: #131820;
      border-top: 1px solid var(--border-subtle);
      z-index: 999;
      justify-content: space-around;
      align-items: center;
    }
    .bottom-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      gap: 4px;
    }
    .bottom-nav a i {
      font-size: 20px;
    }
    .bottom-nav a.active {
      color: var(--neon-green);
    }

    /* Hero */
    .hero {
      padding: 160px 0 100px;
      display: flex;
      align-items: center;
      gap: 60px;
    }
    .hero-left {
      flex: 1;
    }
    .hero-right {
      flex: 1;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      border-radius: 24px;
      height: 480px;
      position: relative;
      overflow: hidden;
    }
    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(11, 14, 20, 0.5);
      backdrop-filter: blur(2px);
    }
    .hero-title {
      font-size: 56px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 24px;
    }
    .hero-title span {
      color: var(--neon-green);
    }
    .hero-sub {
      font-size: 18px;
      color: var(--text-gray);
      max-width: 480px;
      margin-bottom: 36px;
    }
    .hero-badges {
      display: flex;
      gap: 32px;
      margin-bottom: 40px;
    }
    .badge-item {
      text-align: center;
    }
    .badge-num {
      font-size: 28px;
      font-weight: 700;
      color: var(--alert-red);
    }
    .badge-label {
      font-size: 14px;
      color: var(--text-muted);
    }
    .hero-actions {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }

    /* 板块通用 */
    section {
      padding: var(--section-gap) 0;
    }

    /* 优势网格 */
    .strength-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--card-gap);
      margin-top: 40px;
    }
    .strength-card {
      background: var(--card-bg);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      transition: all 0.3s;
      box-shadow: var(--shadow-card);
    }
    .strength-card:hover {
      border-color: var(--border-card-hover);
      transform: translateY(-4px);
      box-shadow: 0 12px 40px rgba(0,0,0,0.6);
    }
    .icon-circle {
      width: 48px;
      height: 48px;
      background: rgba(0,240,168,0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--neon-green);
      font-size: 24px;
    }
    .strength-card:hover .icon-circle {
      background: var(--neon-green);
      color: var(--text-dark);
    }
    .strength-card h3 {
      margin-bottom: 8px;
    }

    /* 案例瀑布流 */
    .cases-masonry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--card-gap);
      margin-top: 40px;
    }
    .case-card {
      background: #131820;
      border-radius: var(--radius-lg);
      padding: 20px;
      border: 1px solid transparent;
      transition: 0.2s;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .case-card:hover {
      border-color: var(--neon-green);
    }
    .case-date {
      font-size: 12px;
      color: var(--text-muted);
    }
    .case-match {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .team {
      font-size: 18px;
      font-weight: 600;
      color: white;
    }
    .score {
      font-family: var(--font-mono);
      font-size: 48px;
      font-weight: 800;
      color: var(--neon-green);
    }
    .status {
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: var(--alert-red);
      border-radius: 50%;
      display: inline-block;
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.4; } }

    /* 对比表 */
    .compare-table {
      display: flex;
      gap: 24px;
      margin-top: 40px;
      overflow-x: auto;
      padding-bottom: 10px;
    }
    .plan-col {
      background: #131820;
      border-radius: var(--radius-lg);
      flex: 1;
      min-width: 250px;
      text-align: center;
      border: 1px solid transparent;
    }
    .plan-col.featured {
      border-color: var(--neon-green);
    }
    .plan-header {
      background: var(--neon-green);
      color: var(--text-dark);
      padding: 24px;
      border-radius: 16px 16px 0 0;
      font-weight: 700;
      font-size: 18px;
    }
    .plan-price {
      font-size: 36px;
      font-weight: 700;
      color: white;
      padding: 16px;
    }
    .plan-features {
      list-style: none;
      padding: 0;
    }
    .plan-features li {
      padding: 16px;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    /* FAQ */
    .faq-grid {
      display: flex;
      gap: 60px;
      margin-top: 40px;
    }
    .faq-left {
      flex: 1;
    }
    .faq-right {
      flex: 2;
    }
    .faq-item {
      background: #131820;
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px;
      font-weight: 500;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      color: white;
    }
    .faq-answer {
      padding: 0 20px 20px;
      color: var(--text-gray);
      display: none;
    }
    .faq-item.open .faq-answer {
      display: block;
    }

    /* CTA */
    .cta-banner {
      background: var(--neon-green);
      padding: 80px 0;
      text-align: center;
      border-radius: 24px;
      margin: 40px 0;
    }
    .cta-banner h2 {
      color: var(--text-dark);
    }
    .cta-banner p {
      color: rgba(11,14,20,0.8);
      margin-bottom: 32px;
    }

    /* Footer */
    .footer {
      background: #0B0E14;
      border-top: 1px solid var(--border-subtle);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    .copyright {
      text-align: center;
      margin-top: 40px;
      color: var(--text-muted);
      font-size: 14px;
    }

    @media (max-width: 1024px) {
      .hero { flex-direction: column; }
      .strength-grid { grid-template-columns: repeat(2, 1fr); }
      .cases-masonry { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .nav-links, .nav-container .btn-primary { display: none; }
      .mobile-menu-btn { display: block; }
      .bottom-nav { display: flex; }
      .hero { padding: 120px 0 80px; }
      .hero-title { font-size: 36px; }
      .strength-grid, .cases-masonry { grid-template-columns: 1fr; }
      .faq-grid { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
    }