/* roulang page: index */
:root {
      --deep-space: #0B0E2F;
      --midnight-purple: #131740;
      --deep-purple-end: #0F1235;
      --star-gold: #F0C45A;
      --star-gold-dark: #D4A83A;
      --nebula-purple: #7B5EA7;
      --aurora-cyan: #4ECDC4;
      --glass-bg: rgba(255, 255, 255, 0.04);
      --glass-border: rgba(255, 255, 255, 0.08);
      --text-primary: #FFFFFF;
      --text-secondary: #E8E8F0;
      --text-body: #B0B5D0;
      --text-muted: #7A80A0;
      --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 1px rgba(123, 94, 167, 0.3);
      --border-radius-card: 16px;
      --border-radius-sm: 10px;
      --border-radius-pill: 50px;
      --container-max: 1200px;
      --section-gap: 100px;
      --section-gap-mobile: 60px;
    }

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

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
      background: linear-gradient(180deg, #0B0E2F 0%, #131740 40%, #0F1235 100%);
      color: var(--text-body);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* 导航栏 - 沉浸式玻璃态 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(11, 14, 47, 0.75);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 72px;
      display: flex;
      align-items: center;
      transition: background 0.3s ease;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      color: var(--text-primary);
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: 0.02em;
    }

    .logo i {
      color: var(--star-gold);
      font-size: 1.8rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-links a {
      color: var(--text-body);
      text-decoration: none;
      font-size: 0.95rem;
      font-weight: 500;
      transition: color 0.3s, border-bottom 0.2s;
      position: relative;
      padding-bottom: 4px;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--star-gold);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--star-gold);
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-cta {
      background: linear-gradient(135deg, var(--star-gold), var(--star-gold-dark));
      color: var(--deep-space);
      border: none;
      padding: 10px 24px;
      border-radius: var(--border-radius-pill);
      font-weight: 700;
      font-size: 0.9rem;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 12px rgba(240, 196, 90, 0.3);
      text-decoration: none;
      display: inline-block;
    }

    .nav-cta:hover {
      box-shadow: 0 0 24px rgba(240, 196, 90, 0.6);
      transform: scale(1.04);
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 14, 47, 0.9);
      backdrop-filter: blur(25px);
      -webkit-backdrop-filter: blur(25px);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      z-index: 1000;
      justify-content: space-around;
      padding: 10px 12px;
      border-radius: 32px 32px 0 0;
    }

    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: var(--text-muted);
      font-size: 0.7rem;
      text-decoration: none;
      transition: color 0.2s;
    }

    .mobile-nav-item i {
      font-size: 1.3rem;
      margin-bottom: 2px;
    }

    .mobile-nav-item.active {
      color: var(--star-gold);
    }

    /* Hero 首屏 */
    .hero {
      padding: 140px 0 80px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      flex: 1;
      z-index: 2;
    }

    .hero h1 {
      font-size: 42px;
      font-weight: 700;
      letter-spacing: 0.02em;
      background: linear-gradient(135deg, #F0C45A, #F7E29E);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .hero-subtitle {
      font-size: 1.1rem;
      color: var(--text-body);
      margin-bottom: 32px;
      max-width: 500px;
    }

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

    .btn-primary {
      background: linear-gradient(135deg, var(--star-gold), var(--star-gold-dark));
      color: var(--deep-space);
      border: none;
      padding: 14px 36px;
      border-radius: var(--border-radius-pill);
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      text-decoration: none;
      display: inline-block;
      box-shadow: 0 8px 20px rgba(240, 196, 90, 0.25);
      transition: all 0.3s ease;
      letter-spacing: 0.5px;
    }

    .btn-primary:hover {
      box-shadow: 0 0 28px rgba(240, 196, 90, 0.7);
      transform: scale(1.05);
    }

    .btn-secondary {
      background: transparent;
      border: 1.5px solid var(--star-gold);
      color: var(--star-gold);
      padding: 12px 30px;
      border-radius: var(--border-radius-pill);
      font-weight: 600;
      text-decoration: none;
      transition: all 0.3s;
    }

    .btn-secondary:hover {
      background: rgba(240, 196, 90, 0.1);
    }

    .hero-visual {
      flex: 1;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 360px;
      border-radius: 32px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.6);
      opacity: 0.9;
      border: 1px solid rgba(123,94,167,0.2);
    }

    .particles {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      overflow: hidden;
    }

    .particle {
      position: absolute;
      background: white;
      border-radius: 50%;
      opacity: 0.4;
      animation: float 6s infinite;
    }

    @keyframes float {
      0% { transform: translateY(0px); opacity: 0.3; }
      50% { opacity: 0.7; }
      100% { transform: translateY(-100px); opacity: 0; }
    }

    /* 通用板块标题 */
    .section-title {
      font-size: 28px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 16px;
      text-align: center;
    }

    .section-desc {
      color: var(--text-body);
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    section {
      margin-bottom: var(--section-gap);
    }

    /* 痛点卡片 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--glass-bg);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius-card);
      padding: 32px 28px;
      box-shadow: var(--card-shadow);
      transition: transform 0.3s, border-color 0.3s;
      border-left: 4px solid rgba(240, 100, 100, 0.3);
    }

    .pain-card:hover {
      transform: translateY(-6px);
      border-color: rgba(240, 196, 90, 0.4);
    }

    .pain-card i {
      font-size: 2rem;
      color: var(--aurora-cyan);
      margin-bottom: 16px;
    }

    .pain-card h3 {
      font-size: 20px;
      font-weight: 500;
      color: var(--text-secondary);
      margin-bottom: 12px;
    }

    /* 解决方案卡片 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .solution-card {
      background: var(--glass-bg);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(78, 205, 196, 0.15);
      border-radius: var(--border-radius-card);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.3s;
    }

    .solution-card:hover {
      transform: translateY(-5px);
      border-color: var(--aurora-cyan);
    }

    .solution-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }

    .solution-card-content {
      padding: 24px;
    }

    .solution-card h3 {
      color: var(--text-secondary);
      margin-bottom: 8px;
    }

    /* 成果数据区 */
    .stats-row {
      display: flex;
      justify-content: center;
      gap: 60px;
      margin-bottom: 50px;
    }

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

    .stat-number {
      font-size: 48px;
      font-weight: 700;
      color: var(--star-gold);
    }

    .highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 30px;
    }

    .highlight-item {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-body);
    }

    .highlight-item i {
      color: var(--aurora-cyan);
    }

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

    .testimonial-card {
      background: var(--glass-bg);
      backdrop-filter: blur(18px);
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius-card);
      padding: 28px;
      border-left: 5px solid var(--nebula-purple);
    }

    .testimonial-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      margin-bottom: 16px;
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: rgba(255,255,255,0.02);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      color: var(--text-secondary);
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      background: rgba(255,255,255,0.03);
    }

    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-body);
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 最终CTA */
    .cta-final {
      background: rgba(255,255,255,0.02);
      border-radius: 32px;
      padding: 60px 24px;
      text-align: center;
    }

    .trust-badges {
      display: flex;
      justify-content: center;
      gap: 30px;
      margin-top: 20px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    /* 页脚 */
    .footer {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer a {
      color: var(--text-body);
      text-decoration: none;
    }

    .copyright {
      text-align: center;
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    @media (max-width: 1024px) {
      .pain-grid, .solution-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero {
        flex-direction: column;
        text-align: center;
      }
      .hero-visual {
        width: 100%;
      }
      .stats-row {
        gap: 30px;
      }
    }

    @media (max-width: 768px) {
      .navbar {
        display: none;
      }
      .mobile-bottom-nav {
        display: flex;
      }
      .hero h1 {
        font-size: 32px;
      }
      .pain-grid, .solution-grid, .testimonial-grid, .highlights {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      section {
        margin-bottom: var(--section-gap-mobile);
      }
      .btn-primary {
        width: 100%;
        text-align: center;
      }
      .hero-actions {
        justify-content: center;
      }
    }