/* roulang page: index */
:root {
      --primary-green: #00C853;
      --primary-green-light: #00E676;
      --accent-orange: #FF6D00;
      --bg-deep: #0F0F1A;
      --bg-card: rgba(30, 30, 46, 0.7);
      --bg-footer: #1A1A2E;
      --text-white: #FFFFFF;
      --text-light: #E0E0E0;
      --text-body: #B0B0C0;
      --text-muted: #8888A0;
      --border-subtle: rgba(0, 200, 83, 0.15);
      --border-light: rgba(255, 255, 255, 0.08);
      --radius-lg: 16px;
      --radius-pill: 50px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      --font-data: "DIN Alternate", "Roboto", "PingFang SC", sans-serif;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      background-color: var(--bg-deep);
      font-family: var(--font-sans);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 20% 10%, rgba(0,200,83,0.03) 0%, transparent 35%),
        linear-gradient(rgba(0,200,83,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,200,83,0.02) 1px, transparent 1px);
      background-size: 100% 100%, 40px 40px, 40px 40px;
    }
    
    a, button, input, textarea {
      font-family: inherit;
    }
    
    .container-custom {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    
    /* 悬浮胶囊导航 */
    .navbar-capsule {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: 90%;
      max-width: 960px;
      background: rgba(15, 15, 26, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--border-light);
      border-radius: 40px;
      padding: 10px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 1000;
      box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    }
    
    .logo-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-white);
      font-weight: 700;
      font-size: 1.3rem;
      text-decoration: none;
      letter-spacing: 1px;
    }
    
    .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--primary-green);
      clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
      display: inline-block;
    }
    
    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
    }
    
    .nav-links a {
      color: var(--text-light);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.25s;
      position: relative;
    }
    
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-green);
    }
    
    .btn-capsule-primary {
      background: var(--primary-green);
      color: white;
      border-radius: 40px;
      padding: 10px 24px;
      font-weight: 600;
      border: none;
      transition: all 0.25s ease;
      text-decoration: none;
      display: inline-block;
      box-shadow: 0 0 12px rgba(0,200,83,0.4);
      font-size: 0.9rem;
    }
    
    .btn-capsule-primary:hover {
      background: var(--primary-green-light);
      box-shadow: 0 0 22px rgba(0,200,83,0.7);
      color: white;
    }
    
    .hamburger-menu {
      display: none;
      background: transparent;
      border: none;
      color: white;
      font-size: 1.8rem;
      cursor: pointer;
    }
    
    /* Hero Section */
    #hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }
    
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(15,15,26,0.9) 40%, rgba(0,200,83,0.2) 100%);
    }
    
    .hero-content {
      position: relative;
      z-index: 2;
    }
    
    h1 {
      font-size: 3.2rem;
      font-weight: 700;
      color: var(--text-white);
      line-height: 1.2;
      letter-spacing: -0.5px;
      margin-bottom: 1.5rem;
    }
    
    .hero-subtitle {
      font-size: 1.5rem;
      color: var(--text-light);
      margin-bottom: 2.5rem;
    }
    
    .btn-glow {
      background: var(--primary-green);
      border: none;
      color: white;
      border-radius: 50px;
      padding: 14px 36px;
      font-weight: 600;
      box-shadow: 0 0 20px rgba(0,200,83,0.5);
      transition: 0.25s;
      text-decoration: none;
      display: inline-block;
    }
    
    .btn-glow:hover {
      background: var(--primary-green-light);
      box-shadow: 0 0 30px rgba(0,200,83,0.8);
      color: white;
    }
    
    .btn-outline-green {
      background: transparent;
      border: 1.5px solid var(--primary-green);
      color: var(--primary-green);
      border-radius: 50px;
      padding: 14px 36px;
      font-weight: 600;
      transition: 0.25s;
      text-decoration: none;
      display: inline-block;
      margin-left: 16px;
    }
    
    .btn-outline-green:hover {
      background: var(--primary-green);
      color: white;
    }
    
    /* 通用区块 */
    section {
      padding: 100px 0;
      position: relative;
    }
    
    h2 {
      font-size: 2.2rem;
      font-weight: 600;
      color: var(--text-white);
      margin-bottom: 1rem;
    }
    
    .section-subhead {
      color: var(--text-muted);
      font-size: 1.1rem;
      margin-bottom: 3rem;
    }
    
    /* 痛点卡片不对称网格 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    
    .pain-card {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      transition: all 0.25s;
      box-shadow: var(--shadow-card);
    }
    
    .pain-card:hover {
      border-color: var(--primary-green);
      box-shadow: 0 12px 40px rgba(0,200,83,0.2);
    }
    
    .pain-card i {
      color: var(--primary-green);
      font-size: 2rem;
      margin-bottom: 20px;
    }
    
    /* 解决方案交替 */
    .solution-row {
      display: flex;
      align-items: center;
      margin-bottom: 80px;
      gap: 40px;
    }
    
    .solution-img {
      width: 100%;
      border-radius: 16px;
      border: 1px solid var(--border-subtle);
      box-shadow: 0 0 25px rgba(0,200,83,0.15);
    }
    
    .feature-list {
      list-style: none;
      padding-left: 0;
    }
    
    .feature-list li {
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-body);
    }
    
    .feature-list i {
      color: var(--primary-green);
      font-size: 1.2rem;
    }
    
    /* 数据滚动 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    
    .stat-number {
      font-family: var(--font-data);
      font-size: 3.2rem;
      font-weight: 700;
      color: var(--primary-green);
    }
    
    /* 证言卡片 */
    .testimonial-card {
      background: rgba(30,30,46,0.8);
      backdrop-filter: blur(10px);
      border-radius: 16px;
      padding: 28px;
      border: 1px solid rgba(255,109,0,0.2);
      transition: 0.25s;
    }
    
    .testimonial-card:hover {
      border-color: var(--accent-orange);
      box-shadow: 0 0 25px rgba(255,109,0,0.25);
    }
    
    /* FAQ */
    .accordion-button {
      background: transparent;
      color: var(--text-white);
      font-weight: 500;
    }
    
    .accordion-item {
      background: transparent;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    
    .accordion-button:not(.collapsed) {
      background: rgba(0,200,83,0.05);
      color: var(--primary-green);
    }
    
    /* 表单 */
    .form-input-style {
      background: rgba(255,255,255,0.05);
      border: none;
      border-bottom: 2px solid rgba(0,200,83,0.3);
      border-radius: 4px;
      padding: 12px 16px;
      color: white;
      width: 100%;
    }
    
    .form-input-style:focus {
      outline: none;
      border-bottom-color: var(--primary-green);
      box-shadow: 0 4px 12px rgba(0,200,83,0.2);
    }
    
    footer {
      background: var(--bg-footer);
      border-top: 2px solid var(--primary-green);
      padding: 60px 0 20px;
    }
    
    @media (max-width: 992px) {
      .nav-links {
        display: none;
      }
      .hamburger-menu {
        display: block;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    
    @media (max-width: 768px) {
      h1 { font-size: 2.4rem; }
      .pain-grid { grid-template-columns: 1fr; }
      .solution-row { flex-direction: column; }
      .stats-grid { grid-template-columns: 1fr; }
    }