/* roulang page: index */
:root {
      --primary-gold: #D4AF37;
      --primary-gold-dark: #B4942C;
      --secondary-deep: #1A1A2E;
      --bg-deeper: #0D0D1A;
      --card-bg: #141428;
      --accent-cyan: #00E5FF;
      --text-light: #FFFFFF;
      --text-muted: #B0B0C0;
      --light-bg: #F5F5F7;
      --dark-text: #1A1A2E;
      --border-subtle: rgba(212, 175, 55, 0.15);
      --border-card: rgba(255, 255, 255, 0.06);
      --radius-lg: 12px;
      --radius-md: 8px;
      --radius-xl: 16px;
      --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
      --shadow-light: 0 2px 12px rgba(0,0,0,0.08);
      --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-deeper);
      color: var(--text-light);
      line-height: 1.75;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 3.2rem;
      line-height: 1.2;
    }

    h2 {
      font-size: 2.4rem;
      margin-bottom: 1.5rem;
    }

    .text-gold {
      color: var(--primary-gold);
    }

    .bg-card {
      background-color: var(--card-bg);
      border: 1px solid var(--border-card);
    }

    .btn-primary-custom {
      background: linear-gradient(135deg, #D4AF37 0%, #C49B2C 100%);
      border: none;
      color: #1A1A2E;
      font-weight: 600;
      padding: 0.75rem 2rem;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      box-shadow: 0 2px 8px rgba(212,175,55,0.3);
      letter-spacing: 0.5px;
    }

    .btn-primary-custom:hover {
      background: linear-gradient(135deg, #e4bf47 0%, #d4aa3a 100%);
      color: #0D0D1A;
      transform: scale(1.02);
      box-shadow: 0 6px 18px rgba(212,175,55,0.5);
    }

    .btn-outline-gold {
      background: transparent;
      border: 2px solid var(--primary-gold);
      color: var(--primary-gold);
      font-weight: 600;
      padding: 0.75rem 2rem;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
    }

    .btn-outline-gold:hover {
      background: rgba(212,175,55,0.1);
      color: #fff;
      border-color: #e4bf47;
      transform: translateY(-2px);
    }

    /* 浮动导航 Dock */
    .dock-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: 90%;
      max-width: 750px;
      background: rgba(13, 13, 26, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 60px;
      padding: 0.5rem 1.2rem;
      z-index: 1030;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.3s ease;
      box-shadow: 0 8px 30px rgba(0,0,0,0.6);
    }

    .dock-logo {
      font-weight: 700;
      font-size: 1.4rem;
      color: var(--primary-gold);
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }

    .dock-logo i {
      font-size: 1.6rem;
      color: var(--accent-cyan);
    }

    .dock-links {
      display: flex;
      gap: 1.5rem;
      align-items: center;
    }

    .dock-links a {
      color: #ccc;
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      white-space: nowrap;
    }

    .dock-links a:hover {
      color: var(--primary-gold);
    }

    .mobile-menu-btn {
      background: transparent;
      border: none;
      color: white;
      font-size: 1.8rem;
      display: none;
    }

    @media (max-width: 768px) {
      .dock-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .dock-nav {
        padding: 0.4rem 1rem;
      }
      h1 {
        font-size: 2.5rem;
      }
      h2 {
        font-size: 2rem;
      }
    }

    /* Hero */
    .hero-section {
      background: radial-gradient(circle at 80% 30%, #1e1e3a 0%, #0D0D1A 80%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }

    .hero-image-bg {
      position: absolute;
      right: 0;
      top: 0;
      width: 48%;
      height: 100%;
      background: url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      opacity: 0.85;
      mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
      -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    /* 痛点卡片 */
    .pain-card {
      background: var(--card-bg);
      border-left: 4px solid var(--primary-gold);
      border-radius: var(--radius-lg);
      padding: 2rem;
      transition: all 0.3s ease;
    }

    .pain-card:hover {
      border-left-width: 6px;
      box-shadow: 0 0 20px rgba(212,175,55,0.2);
      transform: translateY(-4px);
    }

    /* 优势卡片 */
    .advantage-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 2rem;
      text-align: center;
      transition: 0.3s;
    }

    .advantage-card:hover {
      border-color: rgba(212,175,55,0.4);
      box-shadow: 0 0 0 1px rgba(212,175,55,0.3), var(--shadow-card);
      transform: translateY(-6px);
    }

    .counter-number {
      font-size: 3rem;
      font-weight: 700;
      color: var(--primary-gold);
      line-height: 1.2;
    }

    .testimonial-card {
      background: var(--light-bg);
      color: var(--dark-text);
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: var(--shadow-light);
    }

    .accordion-button {
      background-color: var(--card-bg);
      color: white;
      font-weight: 600;
      border: none;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      background-color: #1e1e36;
      color: var(--primary-gold);
      border-left: 4px solid var(--primary-gold);
    }

    .accordion-item {
      background: transparent;
      border: 1px solid var(--border-card);
      margin-bottom: 0.8rem;
      border-radius: var(--radius-md);
    }

    footer {
      background: #0A0A16;
      border-top: 1px solid rgba(212,175,55,0.2);
    }