/* roulang page: index */
:root {
      --deep-oak: #3E2C1F;
      --champagne-gold: #C8A96E;
      --mist-green: #5F6B5E;
      --ivory-white: #F7F4EF;
      --burgundy: #7A2E3B;
      --deep-jade: #2E5A4A;
      --white: #FFFFFF;
      --text-dark: #2B2B2B;
      --text-muted: #5F6B5E;
      --border-light: rgba(200, 169, 110, 0.18);
      --shadow-card: 0 4px 20px rgba(62, 44, 31, 0.06);
      --shadow-hover: 0 18px 36px rgba(62, 44, 31, 0.12);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --transition: all 0.25s ease;
      --font-title: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --font-body: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
      --font-mono: 'JetBrains Mono', 'Courier New', monospace;
      --container-max: 1320px;
      --header-height: 72px;
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--ivory-white);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 32px;
      width: 100%;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-title);
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 3.5rem;
      line-height: 1.15;
      color: var(--deep-oak);
    }

    h2 {
      font-size: 2.25rem;
      margin-bottom: 48px;
      position: relative;
      display: inline-block;
      color: var(--deep-oak);
    }

    h2::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -12px;
      width: 50px;
      height: 3px;
      background: var(--champagne-gold);
      border-radius: 2px;
    }

    h3 {
      font-size: 1.375rem;
      font-weight: 600;
      color: var(--deep-oak);
    }

    a {
      text-decoration: none;
      color: inherit;
    }

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

    button, input, textarea {
      font-family: var(--font-body);
      font-size: 16px;
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--header-height);
      z-index: 100;
      display: flex;
      align-items: center;
      background: linear-gradient(90deg, rgba(247,244,239,0.92) 60%, rgba(62,44,31,0.88) 60%);
      backdrop-filter: blur(12px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.04);
      transition: var(--transition);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 32px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--deep-oak);
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: 0.5px;
      font-family: var(--font-title);
    }

    .logo-icon {
      font-size: 2rem;
      color: var(--champagne-gold);
      filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 36px;
    }

    .nav-links a {
      font-weight: 500;
      color: var(--mist-green);
      transition: var(--transition);
      font-size: 1rem;
      border-bottom: 2px solid transparent;
      padding-bottom: 4px;
    }

    .nav-links a:hover {
      color: var(--champagne-gold);
      border-bottom-color: var(--champagne-gold);
    }

    .nav-cta {
      background: var(--champagne-gold);
      color: var(--deep-oak);
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      box-shadow: 0 4px 10px rgba(200,169,110,0.25);
      margin-left: 20px;
    }

    .nav-cta:hover {
      background: #b8944f;
      transform: translateY(-2px);
      box-shadow: 0 12px 22px rgba(200,169,110,0.4);
      color: var(--deep-oak);
    }

    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--deep-oak);
      background: none;
      border: none;
      cursor: pointer;
    }

    /* Hero 分屏 */
    .hero {
      display: flex;
      min-height: 100vh;
      padding-top: var(--header-height);
      align-items: center;
      background: var(--ivory-white);
      position: relative;
      overflow: hidden;
    }

    .hero-left {
      width: 60%;
      padding: 40px 60px 40px 32px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .hero-right {
      width: 40%;
      background: linear-gradient(135deg, #3E2C1F 0%, #2A1E14 100%);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 40px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-blend-mode: overlay;
    }

    .hero-right::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(62,44,31,0.7);
      backdrop-filter: blur(2px);
      background-image: radial-gradient(rgba(200,169,110,0.15) 1px, transparent 1px);
      background-size: 20px 20px;
    }

    .dashboard-preview {
      position: relative;
      z-index: 2;
      background: rgba(255,255,255,0.12);
      backdrop-filter: blur(18px);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid rgba(200,169,110,0.3);
      box-shadow: 0 20px 40px rgba(0,0,0,0.35);
      width: 100%;
      max-width: 360px;
      color: var(--white);
    }

    .metric-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 24px;
    }

    .live-number {
      font-family: var(--font-mono);
      font-size: 2.2rem;
      font-weight: 500;
      color: var(--champagne-gold);
    }

    .burgundy-number {
      color: var(--burgundy);
    }

    .badge-tag {
      font-size: 0.8rem;
      color: var(--mist-green);
      letter-spacing: 0.5px;
    }

    .hero-title {
      margin-bottom: 20px;
    }

    .hero-sub {
      font-size: 1.2rem;
      color: var(--mist-green);
      margin-bottom: 32px;
      font-weight: 400;
    }

    .stats-row {
      display: flex;
      gap: 28px;
      margin-bottom: 40px;
    }

    .stat-item {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .stat-num {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 600;
      color: var(--champagne-gold);
    }

    .btn-primary {
      background: var(--champagne-gold);
      color: var(--deep-oak);
      font-weight: 600;
      padding: 14px 36px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: var(--transition);
      border: none;
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(200,169,110,0.3);
      text-align: center;
    }

    .btn-primary:hover {
      background: #b8944f;
      transform: translateY(-3px);
      box-shadow: 0 18px 32px rgba(200,169,110,0.45);
    }

    /* 通用板块 */
    section {
      padding: 120px 0;
    }

    .metrics-section {
      background: linear-gradient(145deg, #3E2C1F 0%, #2A1E14 100%);
      color: var(--ivory-white);
      position: relative;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 48px;
    }

    .metric-card {
      background: rgba(255,255,255,0.06);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      border: 1px solid rgba(200,169,110,0.25);
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-6px);
      background: rgba(255,255,255,0.1);
    }

    .big-number {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 500;
      color: var(--champagne-gold);
    }

    .trend-badge {
      color: var(--burgundy);
      font-weight: 600;
      margin-left: 8px;
    }

    .services-scroll {
      display: flex;
      gap: 28px;
      overflow-x: auto;
      padding: 16px 4px 40px;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

    .services-scroll::-webkit-scrollbar {
      display: none;
    }

    .service-card {
      min-width: 320px;
      max-width: 380px;
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
      transition: var(--transition);
      flex-shrink: 0;
    }

    .service-card:hover {
      box-shadow: var(--shadow-hover);
      background: #FFFDF9;
    }

    .icon-circle {
      width: 64px;
      height: 64px;
      background: rgba(95,107,94,0.1);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--champagne-gold);
      font-size: 1.8rem;
      margin-bottom: 24px;
    }

    .btn-outline {
      border: 1.5px solid var(--deep-oak);
      color: var(--deep-oak);
      background: transparent;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      transition: var(--transition);
      display: inline-block;
      margin-top: 20px;
    }

    .btn-outline:hover {
      background: var(--deep-oak);
      color: var(--ivory-white);
    }

    .comparison-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 24px;
      align-items: center;
      margin-top: 48px;
    }

    .vs-badge {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--champagne-gold);
      background: rgba(200,169,110,0.1);
      padding: 10px 18px;
      border-radius: 40px;
    }

    .compare-col {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 36px;
      border: 1px solid var(--border-light);
    }

    .faq-item {
      border-bottom: 1px solid rgba(95,107,94,0.2);
      padding: 20px 0;
      cursor: pointer;
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      margin-top: 48px;
    }

    input, textarea {
      width: 100%;
      padding: 14px 18px;
      border: 1px solid var(--mist-green);
      border-radius: var(--radius-sm);
      background: var(--ivory-white);
      margin-bottom: 20px;
      transition: var(--transition);
    }

    input:focus, textarea:focus {
      outline: none;
      border-color: var(--champagne-gold);
      box-shadow: 0 0 0 3px rgba(200,169,110,0.2);
    }

    .footer {
      background: var(--deep-oak);
      color: var(--ivory-white);
      padding: 60px 0 25px;
    }

    @media (max-width: 1024px) {
      .hero {
        flex-direction: column;
      }
      .hero-left, .hero-right {
        width: 100%;
      }
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
      .comparison-row {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
    }

    @media (max-width: 768px) {
      h1 { font-size: 2.5rem; }
      .metrics-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .container {
        padding: 0 20px;
      }
    }