/* roulang page: index */
:root {
      --deep-purple: #2D0B3F;
      --electric-violet: #C44DFF;
      --champagne-gold: #E8C37B;
      --bg-dark: #1A0525;
      --bg-card: rgba(26, 5, 37, 0.75);
      --text-soft: #F2E9F9;
      --text-white: #FFFFFF;
      --border-neon: rgba(196, 77, 255, 0.3);
      --shadow-neon: 0 8px 32px rgba(0,0,0,0.5);
      --radius-card: 24px;
      --radius-btn: 50px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-number: "Inter", "Segoe UI", sans-serif;
      --transition-base: all 0.3s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-dark);
      color: var(--text-soft);
      margin: 0;
      padding: 0;
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 8px;
    }
    ::-webkit-scrollbar-track {
      background: #1A0525;
    }
    ::-webkit-scrollbar-thumb {
      background: #C44DFF;
      border-radius: 10px;
    }

    /* 导航栏重塑 */
    .navbar {
      background: rgba(26, 5, 37, 0.88);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--electric-violet);
      box-shadow: 0 0 18px rgba(196, 77, 255, 0.5);
      padding: 12px 0;
      z-index: 1050;
      transition: var(--transition-base);
    }
    .navbar-brand {
      font-weight: 800;
      font-size: 1.6rem;
      color: var(--text-white) !important;
      letter-spacing: 2px;
      transition: var(--transition-base);
    }
    .navbar-brand:hover {
      text-shadow: 0 0 18px var(--electric-violet);
      color: #fff;
    }
    .navbar-toggler {
      border: none;
      color: var(--electric-violet);
      box-shadow: none;
    }
    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23C44DFF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    .nav-link {
      color: var(--text-soft) !important;
      font-weight: 500;
      margin: 0 12px;
      padding: 8px 4px;
      position: relative;
      transition: var(--transition-base);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--electric-violet) !important;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--electric-violet);
      transition: width 0.25s ease;
      box-shadow: 0 0 12px var(--electric-violet);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .btn-nav-cta {
      background: var(--electric-violet);
      color: white;
      border-radius: 8px;
      padding: 10px 24px;
      font-weight: 700;
      border: none;
      transition: var(--transition-base);
      box-shadow: 0 0 16px rgba(196, 77, 255, 0.5);
    }
    .btn-nav-cta:hover {
      background: #d16fff;
      box-shadow: 0 0 28px var(--electric-violet), 0 0 40px rgba(196,77,255,0.6);
      color: white;
      transform: scale(1.02);
    }

    /* 按钮系统 */
    .btn-primary-gold {
      background: var(--champagne-gold);
      color: var(--deep-purple);
      font-weight: 700;
      border-radius: var(--radius-btn);
      padding: 14px 38px;
      border: none;
      box-shadow: 0 6px 22px rgba(232, 195, 123, 0.45);
      transition: var(--transition-base);
    }
    .btn-primary-gold:hover {
      background: #ffffff;
      color: #2D0B3F;
      box-shadow: 0 10px 30px rgba(232, 195, 123, 0.8);
      transform: scale(1.05);
    }
    .btn-outline-neon {
      background: transparent;
      border: 2px solid var(--electric-violet);
      color: var(--electric-violet);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 36px;
      transition: var(--transition-base);
    }
    .btn-outline-neon:hover {
      background: var(--electric-violet);
      color: white;
      box-shadow: 0 0 24px rgba(196, 77, 255, 0.7);
    }

    /* Hero区域 */
    .hero-section {
      height: 90vh;
      min-height: 600px;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      display: flex;
      align-items: center;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, #2D0B3F 0%, transparent 45%, #1A0525 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: 100%;
    }
    .hero-title {
      font-size: clamp(2.5rem, 6vw, 4.5rem);
      font-weight: 800;
      color: white;
      text-shadow: 0 0 30px rgba(196, 77, 255, 0.6);
      letter-spacing: 0.02em;
    }
    .scroll-indicator {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      width: 40px;
      height: 40px;
      border: 2px solid var(--electric-violet);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      animation: pulse 2s infinite;
      color: var(--electric-violet);
      font-size: 1.2rem;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(196,77,255,0.7); }
      70% { box-shadow: 0 0 0 15px rgba(196,77,255,0); }
      100% { box-shadow: 0 0 0 0 rgba(196,77,255,0); }
    }

    /* 区块标题装饰 */
    .section-title {
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      font-weight: 700;
      color: white;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background: var(--electric-violet);
      margin: 16px auto 0;
      box-shadow: 0 0 12px var(--electric-violet);
    }
    .subtitle {
      font-size: 1.1rem;
      color: var(--text-soft);
      opacity: 0.85;
      max-width: 650px;
      margin: 0 auto 48px;
    }

    /* 卡片系统 */
    .card-custom {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-neon);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-neon);
      transition: var(--transition-base);
      height: 100%;
    }
    .card-custom:hover {
      border-color: var(--electric-violet);
      box-shadow: 0 14px 40px rgba(196, 77, 255, 0.3);
      transform: translateY(-6px);
    }
    .pain-card {
      background: rgba(26,5,37,0.7);
      border: 1px solid rgba(196,77,255,0.2);
      border-radius: 20px;
      padding: 28px 20px;
      text-align: center;
      transition: 0.2s;
    }
    .icon-circle {
      width: 56px;
      height: 56px;
      background: rgba(196,77,255,0.15);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      color: var(--electric-violet);
      font-size: 1.8rem;
    }
    .data-badge {
      width: 64px;
      height: 64px;
      background: var(--electric-violet);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.5rem;
      color: var(--champagne-gold);
      box-shadow: 0 0 22px rgba(196,77,255,0.7);
      position: absolute;
      top: -20px;
      right: -15px;
    }
    .testimonial-card {
      background: rgba(34,10,51,0.8);
      border-left: 5px solid var(--champagne-gold);
      border-radius: 32px;
      padding: 36px;
      backdrop-filter: blur(10px);
    }
    .accordion-button {
      background: transparent;
      color: white;
      font-weight: 600;
      border-bottom: 1px solid rgba(196,77,255,0.25);
      box-shadow: none;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(196,77,255,0.05);
      color: var(--electric-violet);
      box-shadow: none;
    }
    .accordion-button::before {
      content: '●';
      color: var(--electric-violet);
      margin-right: 12px;
      font-size: 0.8rem;
    }
    .accordion-body {
      color: var(--text-soft);
      line-height: 1.8;
    }
    footer {
      background: #1A0525;
      border-top: 2px solid var(--electric-violet);
    }