/* roulang page: index */
:root {
      --deep-black: #0B0A0F;
      --card-bg: #15131E;
      --purple: #A855F7;
      --gold: #F0B90B;
      --gold-dark: #D4A30A;
      --white: #FFFFFF;
      --gray: #B0ADC0;
      --muted: #6B6880;
      --neon-green: #00E5A0;
      --border-glow: rgba(168,85,247,0.2);
      --shadow-glow: 0 0 30px rgba(168,85,247,0.25);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --font-mono: 'Inter', system-ui, sans-serif;
      --border-radius-card: 16px;
      --border-radius-btn: 10px;
      --transition-base: all 0.25s ease;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--deep-black);
      color: var(--gray);
      line-height: 1.7;
      margin: 0;
      padding: 0;
      font-size: 16px;
    }
    
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-base);
    }
    
    img {
      max-width: 100%;
      height: auto;
    }
    
    h1, h2, h3 {
      font-weight: 700;
      color: var(--white);
      margin-bottom: 1rem;
    }
    
    h1 {
      font-size: 48px;
      letter-spacing: -0.5px;
      line-height: 1.2;
    }
    
    h2 {
      font-size: 36px;
      letter-spacing: 0;
      margin-bottom: 1.5rem;
    }
    
    h3 {
      font-size: 22px;
      font-weight: 600;
    }
    
    .text-muted-custom {
      color: var(--muted) !important;
    }
    
    .text-gold {
      color: var(--gold) !important;
    }
    
    .text-purple {
      color: var(--purple) !important;
    }
    
    .bg-deep {
      background-color: var(--deep-black);
    }
    
    .bg-card {
      background-color: var(--card-bg);
      border: 1px solid var(--border-glow);
      border-radius: var(--border-radius-card);
    }
    
    .btn-primary-custom {
      background-color: var(--purple);
      color: var(--white);
      border: none;
      border-radius: var(--border-radius-btn);
      padding: 0.75rem 2rem;
      font-weight: 600;
      transition: var(--transition-base);
      box-shadow: 0 4px 15px rgba(168,85,247,0.3);
    }
    
    .btn-primary-custom:hover {
      background-color: #B87EF0;
      box-shadow: 0 0 25px rgba(168,85,247,0.6);
      color: white;
      transform: translateY(-2px);
    }
    
    .btn-outline-purple {
      background: transparent;
      border: 1px solid var(--purple);
      color: var(--purple);
      border-radius: var(--border-radius-btn);
      padding: 0.75rem 2rem;
      font-weight: 600;
      transition: var(--transition-base);
    }
    
    .btn-outline-purple:hover {
      background-color: var(--purple);
      color: white;
      box-shadow: 0 0 20px rgba(168,85,247,0.4);
    }
    
    .btn-gold-cta {
      background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
      color: #0B0A0F;
      border: none;
      border-radius: var(--border-radius-btn);
      padding: 0.9rem 2.5rem;
      font-weight: 700;
      font-size: 1.1rem;
      letter-spacing: 0.5px;
      transition: var(--transition-base);
      box-shadow: 0 0 25px rgba(240,185,11,0.5);
    }
    
    .btn-gold-cta:hover {
      box-shadow: 0 0 40px rgba(240,185,11,0.8);
      transform: scale(1.02);
      color: #0B0A0F;
    }
    
    .badge-status {
      background-color: rgba(0,229,160,0.15);
      color: var(--neon-green);
      border-radius: 20px;
      padding: 0.35rem 1rem;
      font-size: 0.8rem;
      font-weight: 600;
      border: 1px solid rgba(0,229,160,0.3);
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }
    
    .badge-status i {
      font-size: 0.6rem;
    }
    
    .tag-gold {
      background: rgba(240,185,11,0.1);
      color: var(--gold);
      border-radius: 20px;
      padding: 0.2rem 0.8rem;
      font-size: 0.8rem;
      font-weight: 600;
    }
    
    /* 导航 */
    .navbar-custom {
      background: transparent;
      transition: background 0.3s ease, backdrop-filter 0.3s ease;
      padding: 0.8rem 0;
      z-index: 1000;
    }
    
    .navbar-scrolled {
      background: rgba(11,10,15,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(168,85,247,0.4);
    }
    
    .navbar-brand {
      font-weight: 700;
      font-size: 1.8rem;
      background: linear-gradient(135deg, #C084FC, #A855F7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 0.3rem;
    }
    
    .navbar-brand i {
      background: none;
      -webkit-text-fill-color: var(--gold);
      color: var(--gold);
      font-size: 1.5rem;
    }
    
    .nav-link-custom {
      color: var(--gray) !important;
      font-weight: 500;
      margin: 0 0.2rem;
      position: relative;
      padding: 0.5rem 1rem !important;
    }
    
    .nav-link-custom:hover,
    .nav-link-custom.active {
      color: var(--white) !important;
    }
    
    .nav-link-custom::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 1rem;
      right: 1rem;
      height: 2px;
      background: var(--purple);
      transform: scaleX(0);
      transition: transform 0.2s ease;
    }
    
    .nav-link-custom:hover::after,
    .nav-link-custom.active::after {
      transform: scaleX(1);
    }
    
    .navbar-toggler {
      border-color: rgba(168,85,247,0.5);
    }
    
    .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='rgba(168,85,247,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    
    /* Hero */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(168,85,247,0.25) 0%, #0B0A0F 70%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    
    .hero-img-wrapper {
      position: relative;
    }
    
    .hero-img-wrapper img {
      border-radius: 20px;
      box-shadow: 0 0 40px rgba(168,85,247,0.4);
      border: 1px solid rgba(168,85,247,0.3);
    }
    
    .online-badge {
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(10px);
      border: 1px solid var(--neon-green);
    }
    
    /* 卡片效果 */
    .card-glow {
      background-color: var(--card-bg);
      border: 1px solid var(--border-glow);
      border-radius: var(--border-radius-card);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      height: 100%;
    }
    
    .card-glow:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(168,85,247,0.5);
    }
    
    .icon-purple {
      color: var(--purple);
      font-size: 2rem;
    }
    
    .decorative-line {
      width: 40px;
      height: 3px;
      background: var(--gold);
      margin-top: 1rem;
    }
    
    /* 数据统计 */
    .stat-number {
      font-family: var(--font-mono);
      font-size: 40px;
      font-weight: 700;
      color: var(--gold);
    }
    
    /* 流程 */
    .process-step {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    
    .step-circle {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: transparent;
      border: 2px dashed var(--muted);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      font-weight: bold;
      font-size: 1.2rem;
      transition: 0.3s;
    }
    
    .step-active .step-circle {
      background: var(--purple);
      border: 2px solid var(--purple);
      color: white;
      box-shadow: 0 0 20px rgba(168,85,247,0.5);
    }
    
    /* FAQ */
    .accordion-button {
      background-color: var(--card-bg);
      color: var(--white);
      font-weight: 600;
      border: 1px solid var(--border-glow);
      border-radius: 12px !important;
      padding: 1.2rem 1.5rem;
      transition: 0.2s;
    }
    
    .accordion-button:not(.collapsed) {
      background-color: #1E1928;
      color: var(--white);
      box-shadow: 0 0 15px rgba(168,85,247,0.3);
      border-color: var(--purple);
    }
    
    .accordion-button::after {
      filter: brightness(0) invert(1);
    }
    
    .accordion-body {
      background-color: #0f0d14;
      color: var(--gray);
      border: 1px solid var(--border-glow);
      border-top: none;
      border-radius: 0 0 12px 12px;
    }
    
    .faq-q {
      color: var(--gold);
      font-weight: bold;
      margin-right: 0.5rem;
    }
    
    /* 页脚 */
    .footer-link {
      color: var(--muted);
      transition: 0.2s;
    }
    
    .footer-link:hover {
      color: var(--purple);
    }
    
    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 28px; }
      .hero-section { min-height: auto; padding: 6rem 0 4rem; }
      .navbar-collapse { background: rgba(11,10,15,0.95); padding: 1rem; border-radius: 16px; margin-top: 0.5rem; }
    }
    
    @media (max-width: 576px) {
      .btn-gold-cta, .btn-primary-custom { width: 100%; }
    }