/* roulang page: index */
:root {
      --deep-purple: #0D0B1E;
      --card-bg: #15122B;
      --nav-bg: #1E1A36;
      --border-color: #2E2859;
      --neon-green: #00FFA3;
      --neon-glow: rgba(0,255,163,0.4);
      --amber-gold: #FFB800;
      --alert-red: #C0392B;
      --text-primary: #F0EDF5;
      --text-secondary: #9B96B5;
      --text-muted: #5A5572;
      --radius-card: 12px;
      --radius-btn: 8px;
      --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: 'Noto Sans SC', sans-serif;
      background-color: var(--deep-purple);
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .font-rajdhani {
      font-family: 'Rajdhani', sans-serif;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 自定义滚动条 */
    ::-webkit-scrollbar {
      width: 6px;
      background: var(--deep-purple);
    }
    ::-webkit-scrollbar-thumb {
      background: var(--neon-green);
      border-radius: 3px;
    }
    /* 导航栏 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: rgba(13,11,30,0.92);
      backdrop-filter: blur(12px);
      z-index: 1000;
      border-bottom: 1px solid transparent;
      transition: background 0.3s, border-color 0.3s;
      display: flex;
      align-items: center;
    }
    .main-header.scrolled {
      background: rgba(13,11,30,0.98);
      border-bottom: 1px solid var(--neon-green);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .logo-area {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .logo-text {
      font-family: 'Rajdhani', sans-serif;
      font-weight: 700;
      font-size: 1.8rem;
      color: var(--neon-green);
      letter-spacing: 1px;
      text-shadow: 0 0 12px rgba(0,255,163,0.5);
    }
    .logo-domain {
      font-size: 0.8rem;
      color: var(--amber-gold);
      font-weight: 500;
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      gap: 2rem;
    }
    .nav-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding: 4px 0;
      transition: color 0.2s;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--text-primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--neon-green);
      transition: width 0.3s;
      box-shadow: 0 0 8px var(--neon-green);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .btn-primary {
      background: var(--neon-green);
      color: var(--deep-purple);
      font-weight: 600;
      padding: 0.65rem 1.8rem;
      border-radius: var(--radius-btn);
      border: none;
      cursor: pointer;
      transition: all 0.3s;
      text-decoration: none;
      display: inline-block;
      font-size: 0.95rem;
      box-shadow: 0 0 16px rgba(0,255,163,0.3);
    }
    .btn-primary:hover {
      background: #33FFB8;
      box-shadow: 0 0 24px rgba(0,255,163,0.6);
      color: var(--deep-purple);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--text-secondary);
      color: var(--text-primary);
      font-weight: 500;
      padding: 0.65rem 1.8rem;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: all 0.3s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      border-color: var(--neon-green);
      color: var(--neon-green);
      box-shadow: 0 0 10px rgba(0,255,163,0.2);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: transparent;
      border: none;
    }
    .hamburger span {
      width: 26px;
      height: 2px;
      background: var(--text-primary);
      transition: 0.3s;
    }
    .mobile-menu {
      display: none;
    }
    /* Hero */
    .hero-section {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      background: radial-gradient(circle at 30% 50%, #1a1730, #0D0B1E 80%);
      overflow: hidden;
      padding-top: 72px;
    }
    #particle-canvas {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
    }
    .hero-grid {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
      position: relative;
      z-index: 2;
    }
    .hero-left {
      flex: 0 0 55%;
    }
    .hero-right {
      flex: 0 0 40%;
      display: flex;
      justify-content: center;
    }
    .hero-title {
      font-size: 3.8rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1.5rem;
    }
    .hero-title .highlight {
      color: var(--neon-green);
      display: block;
      font-size: 4.2rem;
      text-shadow: 0 0 20px rgba(0,255,163,0.7);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-secondary);
      margin-bottom: 2.2rem;
    }
    .hero-buttons {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }
    .trophy-container {
      width: 280px;
      height: 320px;
      background: url('/assets/images/backpic/back-1.webp') center/contain no-repeat;
      filter: drop-shadow(0 0 30px rgba(0,255,163,0.6));
      animation: float 4s ease-in-out infinite;
    }
    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
      100% { transform: translateY(0px); }
    }
    .scroll-indicator {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      color: var(--neon-green);
      font-size: 1.8rem;
      animation: bounce 2s infinite;
    }
    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
      40% { transform: translateY(-10px); }
      60% { transform: translateY(-5px); }
    }
    /* 通用板块 */
    section {
      padding: 90px 0;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 600;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }
    .section-sub {
      color: var(--text-secondary);
      margin-bottom: 3rem;
    }
    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 28px;
      transition: all var(--transition);
      height: 100%;
    }
    .card:hover {
      border-color: var(--neon-green);
      transform: translateY(-6px);
      box-shadow: 0 10px 30px rgba(0,255,163,0.15);
    }
    /* 痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .pain-left {
      background: var(--card-bg);
      border-left: 5px solid var(--alert-red);
      padding: 2.5rem;
      border-radius: var(--radius-card);
    }
    .pain-right {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .pain-card {
      background: var(--card-bg);
      border-left: 4px solid var(--alert-red);
      padding: 1.5rem;
      border-radius: var(--radius-card);
    }
    /* 解决方案卡片 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .icon-neon {
      font-size: 2.5rem;
      color: var(--neon-green);
      margin-bottom: 1rem;
    }
    /* 优势网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .stat-number {
      font-size: 3rem;
      font-weight: 700;
      color: var(--amber-gold);
      font-family: 'Rajdhani', sans-serif;
    }
    /* 成果看板 */
    .results-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 10px;
    }
    .result-item {
      flex: 0 0 220px;
      background: rgba(21,18,43,0.8);
      backdrop-filter: blur(5px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      text-align: center;
    }
    /* 证言 */
    .testimonial-block {
      display: flex;
      gap: 3rem;
      align-items: center;
    }
    .testimonial-quote {
      flex: 1;
    }
    .testimonial-cards {
      flex: 1;
      display: flex;
      gap: 20px;
    }
    .avatar {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      border: 2px solid var(--neon-green);
      background: url('/assets/images/coverpic/cover-1.webp') center/cover;
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-color);
      padding: 1.2rem 0;
    }
    .faq-question {
      font-weight: 600;
      font-size: 1.2rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--text-secondary);
      padding-left: 1rem;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 1rem 0 0 1rem;
    }
    .faq-item.active .faq-question {
      color: var(--neon-green);
    }
    /* CTA */
    .cta-section {
      background: radial-gradient(circle at 20% 30%, rgba(0,255,163,0.1), transparent 50%), var(--deep-purple);
    }
    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2rem;
    }
    @media (max-width: 1024px) {
      .hero-grid {
        flex-direction: column;
        text-align: center;
      }
      .hero-left, .hero-right {
        flex: auto;
      }
      .solution-grid, .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links, .header-cta {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .mobile-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(13,11,30,0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
      }
      .mobile-menu a {
        color: var(--text-primary);
        font-size: 1.2rem;
      }
      .pain-grid, .testimonial-block {
        grid-template-columns: 1fr;
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }