/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');

    :root {
      --deep-space: #0A0E17;
      --card-bg: #141A24;
      --border-color: #2A3342;
      --neon-cyan: #00F0FF;
      --race-pink: #FF3366;
      --text-primary: #E5E7EB;
      --text-secondary: #9CA3AF;
      --white: #FFFFFF;
      --shadow-card: 0 4px 6px -1px rgba(0,0,0,0.5);
      --shadow-neon: 0 0 15px rgba(0,240,255,0.5);
      --radius-card: 12px;
      --radius-btn: 8px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background-color: var(--deep-space);
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.3s ease-in-out;
    }

    button, .btn {
      cursor: pointer;
      transition: all 0.3s ease-in-out;
      font-family: inherit;
    }

    .container {
      width: 90%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.3);
      z-index: 50;
      box-shadow: 0 4px 12px rgba(0,0,0,0.6);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.75rem 0;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--white);
    }

    .logo-icon {
      display: flex;
      align-items: center;
    }

    .logo-text {
      background: linear-gradient(to right, #fff, var(--neon-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-links a {
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding-bottom: 4px;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--neon-cyan);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--neon-cyan);
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .btn-primary {
      background: var(--neon-cyan);
      color: var(--deep-space);
      font-weight: 700;
      padding: 0.6rem 1.5rem;
      border-radius: var(--radius-btn);
      border: none;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      box-shadow: 0 0 12px rgba(0,240,255,0.4);
      display: inline-block;
    }

    .btn-primary:hover {
      background: #33f5ff;
      box-shadow: 0 0 20px rgba(0,240,255,0.7);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: transparent;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      font-weight: 700;
      padding: 0.6rem 1.5rem;
      border-radius: var(--radius-btn);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      display: inline-block;
    }

    .btn-secondary:hover {
      background: rgba(0, 240, 255, 0.1);
      border-color: #33f5ff;
      color: #fff;
    }

    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--neon-cyan);
      background: none;
      border: none;
    }

    /* 区块通用 */
    section {
      padding: 4rem 0;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 1rem;
      position: relative;
      display: inline-block;
    }

    .section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 3px;
      background: var(--neon-cyan);
      margin-top: 0.5rem;
      border-radius: 2px;
    }

    .text-accent {
      color: var(--neon-cyan);
    }

    .text-pink {
      color: var(--race-pink);
    }

    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 1.8rem;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease-in-out;
    }

    .card:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 12px 24px -8px rgba(0,240,255,0.2);
      transform: translateY(-4px);
    }

    /* Hero */
    .hero {
      padding-top: 7rem;
      padding-bottom: 4rem;
      display: flex;
      align-items: center;
      min-height: 90vh;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .hero-left h1 {
      font-size: clamp(2.8rem, 6vw, 4.5rem);
      font-weight: 800;
      line-height: 1.2;
      color: var(--white);
      margin-bottom: 1.5rem;
      background: linear-gradient(to right, #fff, #b5f0ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-secondary);
      margin-bottom: 2rem;
      max-width: 90%;
    }

    .hero-buttons {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }

    .hero-right {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 400px;
      display: flex;
      align-items: flex-end;
      box-shadow: 0 20px 40px rgba(0,0,0,0.7);
      border: 1px solid rgba(0,240,255,0.2);
    }

    .hero-overlay {
      background: linear-gradient(to top, #0A0E17 0%, transparent 70%);
      padding: 2rem 1.5rem;
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: white;
    }

    .data-badge {
      background: rgba(10,14,23,0.8);
      backdrop-filter: blur(8px);
      padding: 0.6rem 1.2rem;
      border-radius: 30px;
      font-weight: 600;
      border: 1px solid var(--neon-cyan);
    }

    /* 粒子动画 */
    .particle-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 0;
    }

    .hero-right {
      position: relative;
    }

    /* 网格与卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
    }

    .service-table {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .plan-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 2rem 1.5rem;
      position: relative;
      transition: all 0.3s;
    }

    .plan-card.featured {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 25px rgba(0,240,255,0.25);
      transform: scale(1.02);
    }

    .plan-badge {
      background: var(--neon-cyan);
      color: #0A0E17;
      font-weight: 700;
      padding: 0.25rem 1rem;
      border-radius: 20px;
      font-size: 0.8rem;
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
    }

    .masonry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .case-card {
      border-radius: 16px;
      overflow: hidden;
      background-size: cover;
      background-position: center;
      position: relative;
      height: 280px;
      border: 1px solid var(--border-color);
    }

    .case-card.tall {
      height: 360px;
    }

    .case-overlay {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 1.5rem;
      background: linear-gradient(transparent, #0A0E17);
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-color);
      padding: 1.2rem 0;
    }

    .faq-question {
      font-weight: 700;
      color: var(--white);
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      font-size: 1.2rem;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-in-out;
      color: var(--text-secondary);
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 0.8rem;
    }

    footer {
      background: #0A0E17;
      border-top: 1px solid #2A3342;
      padding: 3rem 0 2rem;
    }

    @media (max-width: 1024px) {
      .grid-3, .service-table, .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(10,14,23,0.96);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.2rem;
        backdrop-filter: blur(20px);
      }
      .nav-links.active {
        display: flex;
      }
      .hamburger {
        display: block;
      }
      .grid-3, .service-table, .masonry-grid, .grid-4 {
        grid-template-columns: 1fr;
      }
    }