/* roulang page: index */
:root {
      --primary: #C7F51E;
      --primary-soft: rgba(199, 245, 30, 0.08);
      --primary-glow: rgba(199, 245, 30, 0.18);
      --accent: #8B5CF6;
      --bg: #0B0E0F;
      --card: #1A1D20;
      --card-hover: #22262A;
      --border: #2A2D30;
      --text: #FFFFFF;
      --text-body: #9CA3AF;
      --text-muted: #4B5563;
      --radius: 12px;
      --radius-sm: 8px;
      --transition: cubic-bezier(0.22, 1, 0.36, 1);
      --max-width: 1280px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      background-color: var(--bg);
      color: var(--text-body);
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, 'Inter', sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    h1, h2, h3, .mono-number {
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text);
    }
    h1 {
      font-size: 64px;
      line-height: 1.15;
      margin-bottom: 24px;
    }
    h2 {
      font-size: 40px;
      margin-bottom: 20px;
    }
    h3 {
      font-size: 22px;
      margin-bottom: 12px;
    }
    p {
      max-width: 560px;
      margin-bottom: 1.5em;
      color: var(--text-body);
    }
    .mono-number {
      font-family: 'SF Mono', 'Inter', 'PingFang SC', monospace;
      font-weight: 600;
      color: var(--primary);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: var(--text-body);
      text-decoration: none;
      transition: color 0.3s var(--transition);
    }
    a:hover {
      color: var(--primary);
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: transparent;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 16px;
      transition: all 0.4s var(--transition);
      position: relative;
      overflow: hidden;
      white-space: nowrap;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--primary);
      color: #0B0E0F;
      border-color: var(--primary);
    }
    .btn-primary:hover {
      background: #e0ff4a;
      border-color: #e0ff4a;
      box-shadow: 0 0 20px var(--primary-glow);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-outline:hover {
      background: var(--primary-soft);
      border-color: var(--primary);
    }
    .btn-ghost {
      color: var(--text-muted);
    }
    .btn-ghost:hover {
      color: var(--text);
    }
    @media (max-width: 768px) {
      h1 { font-size: 36px; }
      h2 { font-size: 28px; }
      .container { padding: 0 20px; }
    }
    /* 导航 */
    #nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      padding: 16px 0;
      transition: background 0.35s var(--transition), backdrop-filter 0.35s, box-shadow 0.35s;
      background: transparent;
      backdrop-filter: blur(0px);
    }
    #nav.scrolled {
      background: rgba(11, 14, 15, 0.92);
      backdrop-filter: blur(20px);
      box-shadow: 0 1px 0 var(--border);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 22px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: -0.01em;
    }
    .logo-icon {
      width: 26px;
      height: 26px;
      background: var(--primary);
      mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2L2 7v10l10 5 10-5V7l-10-5zm3 14.5l-3 1.5-3-1.5V12l-4-2 1-2 6 3 6-3 1 2-4 2v4.5z"/></svg>') center/contain no-repeat;
      background: var(--primary);
      display: inline-block;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      transition: color 0.3s;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .search-toggle {
      background: transparent;
      border: none;
      color: var(--text-body);
      font-size: 18px;
      cursor: pointer;
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      color: var(--text);
      font-size: 24px;
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .nav-actions .btn-ghost { display: none; }
      .mobile-menu-btn { display: block; }
      .nav-inner { justify-content: space-between; }
    }
    /* Hero */
    #hero {
      padding: 180px 0 120px;
      display: flex;
      align-items: center;
      min-height: 100vh;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-decor {
      position: absolute;
      top: -120px;
      right: -100px;
      width: 620px;
      height: 620px;
      background: radial-gradient(circle, rgba(199,245,30,0.04) 0%, transparent 70%);
      border-radius: 50%;
      filter: blur(60px);
      pointer-events: none;
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 48px;
      position: relative;
      z-index: 2;
    }
    .hero-left {
      flex: 0 0 58%;
    }
    .hero-right {
      flex: 1;
      display: flex;
      justify-content: center;
    }
    .hero-dashboard {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      width: 100%;
      backdrop-filter: blur(4px);
    }
    .dashboard-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 18px;
    }
    .dashboard-item .label {
      font-size: 13px;
      color: var(--text-muted);
    }
    .dashboard-item .value {
      font-size: 36px;
      font-family: 'SF Mono','Inter',monospace;
      color: var(--primary);
      font-weight: 600;
      text-shadow: 0 0 8px var(--primary-glow);
    }
    @media (max-width: 768px) {
      #hero { padding: 140px 0 80px; flex-direction: column; }
      .hero-grid { flex-direction: column; }
      .hero-left, .hero-right { flex: auto; width: 100%; }
    }
    /* live pulse */
    #live-pulse {
      padding: 50px 0;
    }
    .pulse-row {
      display: flex;
      flex-wrap: wrap;
      gap: 2px;
      background: transparent;
    }
    .pulse-item {
      flex: 1 1 30%;
      background: var(--card);
      padding: 28px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-radius: 0;
      position: relative;
    }
    .pulse-light {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary);
      animation: breathe 3s infinite ease-in-out;
    }
    @keyframes breathe {
      0%,100% { opacity: 0.6; transform: scale(1); }
      50% { opacity: 1; transform: scale(1.6); }
    }
    /* services 非对称 */
    #services {
      padding: 120px 0;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 24px;
    }
    .card-large {
      grid-column: span 8;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 40px;
      transition: all 0.4s var(--transition);
    }
    .card-small {
      grid-column: span 4;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px;
    }
    .card-small + .card-small {
      margin-top: 0;
    }
    .card-large:hover, .card-small:hover {
      border-color: var(--primary);
      box-shadow: 0 0 0 1px var(--primary);
      transform: translateY(-4px);
    }
    @media (max-width: 768px) {
      .services-grid { display: flex; flex-direction: column; }
    }
    /* compare */
    #compare {
      padding: 100px 0;
    }
    .compare-wrapper {
      display: flex;
      position: relative;
    }
    .compare-left, .compare-right {
      flex: 1;
      padding: 40px 32px;
    }
    .compare-left {
      background: #151719;
      border-radius: var(--radius) 0 0 var(--radius);
    }
    .compare-right {
      background: var(--card);
      border-left: 3px solid var(--primary);
      border-radius: 0 var(--radius) var(--radius) 0;
    }
    .compare-divider {
      width: 4px;
      background: var(--border);
      cursor: col-resize;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .compare-handle {
      width: 28px;
      height: 28px;
      background: white;
      border: 2px solid var(--primary);
      border-radius: 50%;
    }
    @media (max-width: 768px) {
      .compare-wrapper { flex-direction: column; }
      .compare-divider { display: none; }
    }
    /* faq */
    #faq {
      padding: 120px 0;
    }
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-item {
      background: var(--card);
      border-radius: var(--radius);
      padding: 20px 24px;
      border: 1px solid transparent;
      transition: 0.4s var(--transition);
    }
    .faq-item.active {
      background: #22262A;
      border-left: 3px solid var(--primary);
    }
    @media (max-width: 768px) {
      .faq-grid { grid-template-columns: 1fr; }
    }
    /* cta */
    #cta {
      background: #0B0E0F;
      padding: 100px 0;
      text-align: center;
    }
    .cta-form {
      display: flex;
      max-width: 560px;
      margin: 32px auto 0;
    }
    .cta-input {
      flex:1;
      background: #1A1D20;
      border:1px solid #2A2D30;
      padding: 14px 18px;
      color: white;
      border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    }
    .cta-input:focus {
      border-color: var(--primary);
      outline: none;
    }
    /* footer */
    #footer {
      padding: 60px 0 30px;
      border-top: 1px solid var(--border);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }
    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; }
    }