/* roulang page: index */
:root {
      --primary: #E8532E;
      --primary-hover: #C03E1E;
      --secondary: #1A1C23;
      --accent: #FFB81C;
      --success: #00C853;
      --bg-light: #F8F9FA;
      --white: #FFFFFF;
      --text-dark: #4A4A4A;
      --text-light: rgba(255,255,255,0.8);
      --border-light: #E0E0E0;
      --shadow-card: 0 8px 24px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(232,83,46,0.12);
      --radius-card: 16px;
      --radius-btn: 30px;
      --font-mono: 'Roboto Mono', 'Courier New', monospace;
      --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航卡片化控制面板 */
    .nav-panel {
      background: var(--secondary);
      border-radius: 12px;
      margin: 16px auto;
      max-width: 1200px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      height: 68px;
      box-shadow: 0 6px 18px rgba(0,0,0,0.2);
    }
    .logo-area {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--white);
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }
    .logo-area i {
      color: var(--accent);
      font-size: 1.8rem;
    }
    .nav-links {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .nav-item {
      color: rgba(255,255,255,0.75);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.9rem;
      padding: 8px 12px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      gap: 4px;
      transition: var(--transition);
    }
    .nav-item i {
      font-size: 1rem;
      color: var(--accent);
      opacity: 0.7;
    }
    .nav-item:hover {
      color: #fff;
      background: rgba(255,255,255,0.08);
    }
    .nav-item:hover i {
      opacity: 1;
    }
    .nav-cta {
      background: var(--primary);
      color: #fff !important;
      border-radius: 30px;
      padding: 10px 22px;
      font-weight: 600;
      margin-left: 8px;
      box-shadow: 0 4px 10px rgba(232,83,46,0.3);
    }
    .nav-cta:hover {
      background: var(--primary-hover);
      box-shadow: 0 6px 14px rgba(232,83,46,0.4);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 1.8rem;
      cursor: pointer;
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, #1A1C23 0%, #2D3039 100%);
      position: relative;
      overflow: hidden;
      padding: 80px 0 70px;
      margin-top: 10px;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 2px, transparent 2px, transparent 6px),
                        repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 2px, transparent 2px, transparent 6px);
      pointer-events: none;
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 40px;
      position: relative;
      z-index: 2;
    }
    .hero-text {
      flex: 1;
    }
    .hero h1 {
      font-size: 48px;
      font-weight: 700;
      color: #fff;
      letter-spacing: -0.5px;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero .subtitle {
      font-size: 18px;
      color: var(--text-light);
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      border: none;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
      box-shadow: 0 6px 16px rgba(232,83,46,0.35);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 8px 22px rgba(232,83,46,0.5);
      color: #fff;
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: #fff;
      padding: 12px 30px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
    }
    .hero-mockup {
      flex: 1;
      display: flex;
      justify-content: center;
    }
    .score-card {
      background: rgba(20,22,26,0.8);
      backdrop-filter: blur(12px);
      border-radius: 24px;
      padding: 28px 30px;
      color: #fff;
      border: 1px solid rgba(255,255,255,0.1);
      min-width: 260px;
    }
    .live-badge {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--success);
      font-weight: 600;
      margin-bottom: 14px;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      background: var(--success);
      border-radius: 50%;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse { 0%{opacity:1;}50%{opacity:0.4;}100%{opacity:1;} }
    .score-teams {
      font-size: 2.8rem;
      font-weight: 800;
      font-family: var(--font-mono);
      letter-spacing: 2px;
    }
    .score-divider {
      color: var(--accent);
    }
    /* 通用板块 */
    section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
      color: #1A1C23;
      text-align: center;
    }
    .section-sub {
      text-align: center;
      color: #6b6b6b;
      margin-bottom: 50px;
    }
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .service-icon {
      font-size: 2.3rem;
      color: var(--primary);
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .badge-data {
      background: var(--accent);
      color: #1A1C23;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 20px;
      display: inline-block;
      font-size: 0.9rem;
      margin-top: 14px;
    }
    /* 优势数据面板 */
    .dark-panel {
      background: var(--secondary);
      border-radius: 24px;
      padding: 36px;
      color: #fff;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-around;
      margin-bottom: 30px;
    }
    .big-number {
      font-size: 2.8rem;
      font-weight: 800;
      font-family: var(--font-mono);
    }
    .advantage-badges {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .adv-item {
      background: #fff;
      border-radius: 20px;
      padding: 22px;
      text-align: center;
    }
    /* 案例卡片 */
    .case-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: 16px 16px 0 0;
      background: #f1f1f1;
    }
    .case-text {
      padding: 20px;
    }
    /* 解决方案图文 */
    .solution-row {
      display: flex;
      align-items: center;
      gap: 50px;
      margin-bottom: 50px;
    }
    .solution-img {
      flex: 1;
      border-radius: 20px;
      height: 280px;
      object-fit: cover;
    }
    /* FAQ */
    .accordion-card {
      background: #fff;
      border-radius: 24px;
      padding: 18px 22px;
    }
    .accordion-title {
      font-weight: 600;
      font-size: 1.1rem;
      border-bottom: 1px solid var(--border-light);
      padding: 16px 0;
    }
    /* 联系 */
    .contact-dark {
      background: var(--secondary);
      border-radius: 28px;
      padding: 50px;
      color: #fff;
    }
    .footer {
      background: #111318;
      color: #ccc;
      padding: 50px 0 20px;
    }
    @media (max-width: 1024px) {
      .card-grid { grid-template-columns: repeat(2,1fr); }
      .advantage-badges { grid-template-columns: repeat(2,1fr); }
      .hero-content { flex-direction: column; }
    }
    @media (max-width: 640px) {
      .nav-links { display: none; }
      .menu-toggle { display: block; }
      .card-grid, .advantage-badges { grid-template-columns: 1fr; }
      .hero h1 { font-size: 32px; }
      .solution-row { flex-direction: column; }
    }