/* roulang page: index */
:root {
      --deep-blue: #0A0E27;
      --electric-green: #00F0A8;
      --graphite: #1A1F3A;
      --ice-white: #E8F0FE;
      --warning-orange: #FF6B35;
      --card-bg: rgba(26, 31, 58, 0.6);
      --glass-border: rgba(255, 255, 255, 0.08);
      --shadow-default: 0 8px 32px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 12px 40px rgba(0, 240, 168, 0.15);
      --radius-lg: 20px;
      --radius-xl: 40px;
      --radius-full: 60px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
      --font-mono: 'SF Mono', 'Inter', monospace;
      --spacing-xs: 8px;
      --spacing-sm: 16px;
      --spacing-md: 24px;
      --spacing-lg: 40px;
      --spacing-xl: 64px;
      --max-width: 1320px;
      --transition-fast: 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--deep-blue);
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--deep-blue);
      color: var(--ice-white);
      line-height: 1.7;
      font-size: 16px;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-fast);
    }

    button, input, textarea {
      font-family: inherit;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--spacing-md);
    }

    /* 浮动Dock导航 */
    .dock-nav {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 92%;
      z-index: 1000;
      background: rgba(10, 14, 39, 0.75);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-radius: var(--radius-full);
      padding: var(--spacing-xs) 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border: 1px solid var(--glass-border);
      box-shadow: var(--shadow-default);
      gap: var(--spacing-md);
    }

    .dock-logo {
      font-weight: 700;
      font-size: 20px;
      color: var(--electric-green);
      letter-spacing: -0.3px;
      white-space: nowrap;
    }

    .dock-links {
      display: flex;
      gap: var(--spacing-md);
      align-items: center;
    }

    .dock-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--ice-white);
      opacity: 0.85;
      padding: 6px 12px;
      border-radius: 30px;
      transition: opacity var(--transition-fast), background var(--transition-fast);
    }

    .dock-links a:hover, .dock-links a.active {
      opacity: 1;
      background: rgba(255,255,255,0.05);
      color: var(--electric-green);
    }

    .dock-actions {
      display: flex;
      align-items: center;
      gap: var(--spacing-sm);
    }

    .lang-icon {
      color: var(--ice-white);
      font-size: 18px;
      opacity: 0.7;
      cursor: pointer;
      transition: opacity var(--transition-fast);
    }
    .lang-icon:hover { opacity: 1; }

    .btn-dock-cta {
      background: var(--electric-green);
      color: var(--deep-blue);
      font-weight: 600;
      font-size: 14px;
      padding: 8px 18px;
      border-radius: 30px;
      border: none;
      cursor: pointer;
      transition: all var(--transition-fast);
      box-shadow: 0 0 12px rgba(0,240,168,0.3);
    }
    .btn-dock-cta:hover {
      box-shadow: 0 0 20px rgba(0,240,168,0.6);
      transform: translateY(-1px);
    }

    /* 区块通用 */
    section {
      padding: var(--spacing-xl) 0;
      position: relative;
    }

    .section-title {
      font-size: 36px;
      font-weight: 600;
      letter-spacing: -0.3px;
      margin-bottom: var(--spacing-lg);
      display: flex;
      align-items: center;
      gap: var(--spacing-sm);
      color: var(--ice-white);
    }
    .section-title::before {
      content: '';
      width: 40px;
      height: 4px;
      background: var(--electric-green);
      border-radius: 4px;
      box-shadow: 0 0 12px var(--electric-green);
    }

    /* Hero 双栏杂志 */
    .hero-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: var(--spacing-lg);
      align-items: center;
      min-height: 90vh;
      padding-top: 40px;
    }

    .hero-left {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
    }

    .hero-title {
      font-size: 48px;
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.2;
      background: linear-gradient(135deg, #00F0A8 0%, #B6FFE0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      font-size: 18px;
      color: rgba(232,240,254,0.8);
      max-width: 500px;
    }

    .hero-badges {
      display: flex;
      gap: var(--spacing-sm);
      flex-wrap: wrap;
      margin: var(--spacing-xs) 0;
    }
    .badge {
      background: rgba(0,240,168,0.1);
      border: 1px solid rgba(0,240,168,0.25);
      color: var(--electric-green);
      font-size: 14px;
      font-weight: 500;
      padding: 4px 12px;
      border-radius: 20px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .hero-actions {
      display: flex;
      gap: var(--spacing-sm);
      margin-top: var(--spacing-xs);
    }

    .btn-primary {
      background: var(--electric-green);
      color: var(--deep-blue);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-xl);
      border: none;
      font-size: 16px;
      cursor: pointer;
      box-shadow: 0 0 16px rgba(0,240,168,0.25);
      transition: all var(--transition-fast);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-primary:hover {
      box-shadow: 0 0 28px rgba(0,240,168,0.5);
      transform: translateY(-2px);
    }

    .btn-ghost {
      background: transparent;
      border: 1px solid var(--electric-green);
      color: var(--electric-green);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-xl);
      font-size: 16px;
      cursor: pointer;
      transition: all var(--transition-fast);
    }
    .btn-ghost:hover {
      background: rgba(0,240,168,0.1);
      border-color: #33FFBB;
      transform: translateY(-2px);
    }

    .hero-right {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .hero-visual {
      width: 100%;
      max-width: 500px;
      aspect-ratio: 1/1;
      background: radial-gradient(circle at 30% 30%, rgba(0,240,168,0.15), transparent 70%);
      border-radius: 50%;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .hero-img {
      width: 85%;
      filter: drop-shadow(0 0 30px rgba(0,240,168,0.3));
    }

    .floating-panel {
      position: absolute;
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: 16px;
      padding: 12px 16px;
      font-size: 14px;
      color: var(--ice-white);
      box-shadow: var(--shadow-default);
    }
    .panel-top { top: 5%; right: 0; }
    .panel-bottom { bottom: 10%; left: 0; }

    /* 亮点网格 非对称 */
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-md);
    }
    .highlight-card {
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: all var(--transition-fast);
      box-shadow: var(--shadow-default);
      display: flex;
      flex-direction: column;
      gap: var(--spacing-sm);
    }
    .highlight-card:hover {
      box-shadow: var(--shadow-glow);
      border-color: rgba(0,240,168,0.25);
      transform: translateY(-4px);
    }
    .highlight-icon {
      font-size: 32px;
      color: var(--electric-green);
    }
    .highlight-title {
      font-size: 22px;
      font-weight: 600;
    }
    .merged-card {
      grid-column: span 2;
      background: linear-gradient(135deg, rgba(0,240,168,0.08), rgba(10,14,39,0.6));
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    /* 案例瀑布 */
    .cases-waterfall {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-md);
      align-items: start;
    }
    .case-card {
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--glass-border);
      transition: all var(--transition-fast);
      position: relative;
    }
    .case-img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    .case-overlay {
      background: linear-gradient(transparent, rgba(10,14,39,0.9));
      padding: 20px;
      position: absolute;
      bottom: 0;
      width: 100%;
    }
    .case-title {
      font-weight: 600;
      font-size: 18px;
    }
    .case-stat {
      color: var(--electric-green);
      font-family: var(--font-mono);
    }

    /* 方案对比 */
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-md);
    }
    .compare-table {
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-lg);
      padding: 28px;
    }
    .compare-row {
      display: flex;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-md);
    }
    .faq-item {
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-lg);
      padding: 20px;
      cursor: pointer;
    }

    /* 联系 */
    .contact-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-lg);
    }
    .footer-bottom {
      text-align: center;
      padding: var(--spacing-md) 0;
      color: rgba(232,240,254,0.6);
    }

    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .highlights-grid { grid-template-columns: 1fr 1fr; }
      .cases-waterfall { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .dock-nav { bottom: 10px; top: auto; width: 92%; }
      .highlights-grid { grid-template-columns: 1fr; }
      .cases-waterfall { grid-template-columns: 1fr; }
      .compare-grid { grid-template-columns: 1fr; }
      .faq-grid { grid-template-columns: 1fr; }
      .contact-row { grid-template-columns: 1fr; }
      .hero-title { font-size: 36px; }
    }