/* roulang page: index */
:root {
      --deep-space: #1A0B2E;
      --starlight-gold: #F2C94C;
      --nebula-blue: #6C63FF;
      --glow-white: #E0E0FF;
      --white-soft: rgba(224, 224, 255, 0.85);
      --card-bg: rgba(255, 255, 255, 0.05);
      --card-border: rgba(108, 99, 255, 0.3);
      --card-glow: 0 0 25px rgba(108, 99, 255, 0.25);
      --btn-gold-glow: 0 0 30px rgba(242, 201, 76, 0.6);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --radius-btn: 50px;
      --font-head: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --font-body: 'Inter', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --transition-smooth: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
    }

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

    body {
      background-color: var(--deep-space);
      font-family: var(--font-body);
      color: var(--glow-white);
      line-height: 1.7;
      overflow-x: hidden;
      position: relative;
    }

    /* 星空粒子背景 */
    .starfield {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 0;
      pointer-events: none;
      background: radial-gradient(ellipse at 30% 20%, #2a1245 0%, #1A0B2E 70%);
      overflow: hidden;
    }
    .starfield::after {
      content: "";
      position: absolute;
      width: 200%;
      height: 200%;
      top: -50%;
      left: -50%;
      background-image: radial-gradient(2px 2px at 20px 40px, #F2C94C, rgba(0,0,0,0)),
                        radial-gradient(2px 2px at 150px 80px, #6C63FF, rgba(0,0,0,0)),
                        radial-gradient(1px 1px at 300px 200px, #E0E0FF, rgba(0,0,0,0)),
                        radial-gradient(2px 2px at 420px 340px, #F2C94C, rgba(0,0,0,0)),
                        radial-gradient(1px 1px at 560px 120px, #6C63FF, rgba(0,0,0,0)),
                        radial-gradient(2px 2px at 700px 480px, #E0E0FF, rgba(0,0,0,0)),
                        radial-gradient(1px 1px at 860px 60px, #F2C94C, rgba(0,0,0,0));
      background-size: 900px 600px;
      animation: starDrift 18s linear infinite;
      opacity: 0.7;
    }

    @keyframes starDrift {
      0% { transform: translate(0, 0); }
      100% { transform: translate(-30px, -20px); }
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 2;
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: rgba(26, 11, 46, 0.75);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(108, 99, 255, 0.25);
      transition: var(--transition-smooth);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      font-family: var(--font-head);
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--starlight-gold);
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 6px;
      text-decoration: none;
    }
    .logo i {
      font-size: 2rem;
      color: var(--starlight-gold);
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      color: var(--glow-white);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.2s;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--starlight-gold);
      transition: width 0.25s ease;
    }
    .nav-links a:hover {
      color: var(--starlight-gold);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--starlight-gold);
      color: var(--deep-space) !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 15px rgba(242, 201, 76, 0.3);
    }
    .nav-cta:hover {
      background: #ffda6a;
      box-shadow: var(--btn-gold-glow);
      transform: translateY(-1px);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--glow-white);
      cursor: pointer;
    }

    /* 板块通用 */
    section {
      padding: 90px 0;
      position: relative;
      z-index: 2;
    }
    h2 {
      font-family: var(--font-head);
      font-size: 2.5rem;
      font-weight: 600;
      color: var(--glow-white);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .section-sub {
      color: var(--white-soft);
      font-size: 1.2rem;
      margin-bottom: 48px;
    }

    /* Hero */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding-top: 80px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(26, 11, 46, 0.55);
      backdrop-filter: blur(2px);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 3;
      max-width: 800px;
    }
    h1 {
      font-family: var(--font-head);
      font-size: 3.8rem;
      font-weight: 700;
      color: var(--starlight-gold);
      margin-bottom: 24px;
      line-height: 1.3;
      text-shadow: 0 0 25px rgba(242,201,76,0.4);
    }
    .hero-desc {
      font-size: 1.3rem;
      color: var(--glow-white);
      margin-bottom: 36px;
    }
    .btn-group {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--starlight-gold);
      color: var(--deep-space);
      font-weight: 700;
      padding: 16px 42px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      font-size: 1.15rem;
      transition: var(--transition-smooth);
      box-shadow: 0 8px 20px rgba(242,201,76,0.4);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #ffe089;
      box-shadow: var(--btn-gold-glow);
      transform: translateY(-3px);
    }
    .btn-secondary {
      background: transparent;
      border: 2px solid var(--nebula-blue);
      color: var(--nebula-blue);
      font-weight: 600;
      padding: 16px 38px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    .btn-secondary:hover {
      background: rgba(108,99,255,0.15);
      border-color: var(--starlight-gold);
      color: var(--starlight-gold);
    }
    .trust-badge {
      margin-top: 28px;
      color: var(--white-soft);
      font-size: 0.95rem;
    }

    /* 痛点翻转卡片 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 20px;
    }
    .flip-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 32px 20px;
      text-align: center;
      transition: var(--transition-smooth);
      box-shadow: var(--card-glow);
      cursor: pointer;
    }
    .flip-card i {
      font-size: 2.8rem;
      color: var(--nebula-blue);
      margin-bottom: 16px;
    }
    .flip-card h3 {
      font-size: 1.5rem;
      margin-bottom: 12px;
    }
    .flip-card p {
      color: var(--white-soft);
    }
    .flip-card:hover {
      background: rgba(108, 99, 255, 0.15);
      border-color: var(--starlight-gold);
      transform: translateY(-8px);
      box-shadow: 0 0 40px rgba(242,201,76,0.3);
    }
    .flip-card:hover i {
      color: var(--starlight-gold);
    }

    /* 数据统计 */
    .stats-grid {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 30px;
      margin: 40px 0;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-size: 3.5rem;
      font-weight: 700;
      color: var(--starlight-gold);
      font-family: var(--font-body);
    }
    .stat-label {
      color: var(--nebula-blue);
      font-weight: 500;
    }

    /* 时间线流程 */
    .timeline {
      position: relative;
      margin: 40px 0 0 40px;
      border-left: 3px solid var(--nebula-blue);
      padding-left: 40px;
    }
    .timeline-item {
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-item::before {
      content: attr(data-step);
      position: absolute;
      left: -64px;
      background: var(--starlight-gold);
      color: #1A0B2E;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.3rem;
      border: 3px solid var(--deep-space);
    }
    .timeline-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--card-glow);
    }

    /* 证言轮播模拟 */
    .testimonial-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: flex;
      gap: 30px;
      align-items: center;
      border: 1px solid var(--card-border);
    }
    .testimonial-card img {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid var(--starlight-gold);
    }

    /* FAQ 手风琴 */
    .faq-item {
      border-bottom: 1px solid rgba(108,99,255,0.3);
      margin-bottom: 12px;
    }
    .faq-question {
      width: 100%;
      background: transparent;
      border: none;
      color: var(--glow-white);
      font-size: 1.2rem;
      padding: 20px 10px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 500;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      background: rgba(108,99,255,0.08);
      border-radius: 8px;
      padding: 0 20px;
    }
    .faq-answer p {
      padding: 16px 0;
      color: var(--white-soft);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
    }

    /* 最终CTA */
    .final-cta {
      background: rgba(26,11,46,0.9);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--nebula-blue);
    }
    .pulse-btn {
      animation: pulseGlow 2s infinite;
    }
    @keyframes pulseGlow {
      0% { box-shadow: 0 0 10px rgba(242,201,76,0.5); }
      50% { box-shadow: 0 0 45px rgba(242,201,76,0.9); }
      100% { box-shadow: 0 0 10px rgba(242,201,76,0.5); }
    }

    footer {
      padding: 40px 0;
      border-top: 1px solid var(--nebula-blue);
      text-align: center;
    }
    .footer-links a {
      color: var(--white-soft);
      margin: 0 12px;
      text-decoration: none;
    }

    @media (max-width: 1024px) {
      .cards-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      h1 { font-size: 2.5rem; }
      .cards-grid { grid-template-columns: 1fr; }
      .testimonial-card { flex-direction: column; }
    }