/* roulang page: index */
:root {
      --bg-primary: #0D0F12;
      --bg-surface: #16191E;
      --bg-subtle: #1F242D;
      --accent-cyan: #00E5A3;
      --accent-silver: #E2E8F0;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --font-stack: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --container-max: 1280px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.65;
      overflow-x: hidden;
    }

    body {
      width: 100%;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部通知栏与双行导航 */
    .topbar {
      background: #08090b;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.8rem;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-cyan);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.9); }
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(13, 15, 18, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--accent-silver);
    }
    .brand-logo span {
      color: var(--accent-cyan);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 32px;
    }
    .nav-link {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-cyan);
    }
    .btn-header {
      padding: 10px 22px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid rgba(0, 229, 163, 0.4);
      background: rgba(0, 229, 163, 0.05);
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-header:hover {
      background: var(--accent-cyan);
      color: #0D0F12;
      box-shadow: 0 0 20px rgba(0, 229, 163, 0.4);
    }

    /* 板块通用规范 */
    section {
      padding: clamp(70px, 7vw, 110px) 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--bg-primary);
    }
    .section-surface {
      background-color: var(--bg-surface);
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
    }
    .section-tag {
      font-size: 0.825rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--accent-cyan);
      background: rgba(0, 229, 163, 0.1);
      padding: 4px 12px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
      font-weight: 600;
    }
    .section-title {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--accent-silver);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 680px;
      line-height: 1.7;
    }
    .section-header.text-center .section-desc {
      margin: 0 auto;
    }

    /* 按钮组 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.3s ease;
      gap: 8px;
      text-align: center;
    }
    .btn-primary {
      background: var(--accent-cyan);
      color: #0D0F12;
      border: 1px solid var(--accent-cyan);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(0, 229, 163, 0.35);
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-main);
      border: 1px solid var(--border-subtle);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.2);
    }

    /* 板块 1: Hero (API/开发者风格，代码示意) */
    .hero-section {
      padding: 60px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 229, 163, 0.06) 0%, transparent 60%),
                  linear-gradient(180deg, var(--bg-primary) 0%, #12151B 100%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: clamp(2.4rem, 4.5vw, 3.8rem);
      font-weight: 800;
      letter-spacing: -0.03em;
      line-height: 1.15;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .hero-h1 em {
      font-style: normal;
      color: var(--accent-cyan);
    }
    .hero-intro {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }
    .code-console {
      background: #060709;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .console-header {
      background: #111419;
      padding: 12px 18px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .dot { width: 10px; height: 10px; border-radius: 50%; }
    .dot-red { background: #FF5F56; }
    .dot-yellow { background: #FFBD2E; }
    .dot-green { background: #27C93F; }
    .console-title {
      font-family: monospace;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-left: 8px;
    }
    .console-body {
      padding: 20px;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.85rem;
      line-height: 1.7;
      color: #A6ACCD;
      overflow-x: auto;
    }
    .console-body .kw { color: #F07178; }
    .console-body .str { color: #C3E88D; }
    .console-body .fn { color: #82AAFF; }
    .console-body .cmt { color: #546E7A; }

    /* 板块 2: 限时审计倒计时 */
    .countdown-section {
      background: #14171E;
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
      padding: 40px 0;
    }
    .countdown-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 24px;
    }
    .countdown-info h3 {
      font-size: 1.25rem;
      color: var(--accent-silver);
      margin-bottom: 4px;
    }
    .countdown-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .timer-units {
      display: flex;
      gap: 16px;
    }
    .timer-box {
      background: #090B0E;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 8px 16px;
      min-width: 68px;
      text-align: center;
    }
    .timer-num {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--accent-cyan);
      display: block;
      font-family: monospace;
    }
    .timer-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 板块 3: 核心管理亮点 (多列卡片) */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-feature {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .card-feature:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 163, 0.4);
    }
    .card-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: rgba(0, 229, 163, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--accent-cyan);
      font-size: 1.25rem;
      font-weight: bold;
    }
    .card-feature h4 {
      font-size: 1.15rem;
      color: var(--accent-silver);
      margin-bottom: 12px;
    }
    .card-feature p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 4: 资产权益矩阵 */
    .tier-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .tier-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .tier-card.featured {
      border-color: var(--accent-cyan);
      background: linear-gradient(180deg, #1A1F27 0%, var(--bg-surface) 100%);
      box-shadow: 0 0 35px rgba(0, 229, 163, 0.12);
    }
    .tier-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-cyan);
      color: #0D0F12;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
    }
    .tier-name {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--accent-silver);
      margin-bottom: 10px;
    }
    .tier-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .tier-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .tier-features li {
      font-size: 0.875rem;
      color: var(--text-main);
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tier-features li::before {
      content: "✓";
      color: var(--accent-cyan);
      font-weight: 700;
    }

    /* 板块 5: 协作接入工序步骤 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
    }
    .step-idx {
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.08);
      position: absolute;
      top: 14px;
      right: 18px;
      font-family: monospace;
    }
    .step-title {
      font-size: 1.1rem;
      color: var(--accent-silver);
      margin-bottom: 10px;
      margin-top: 8px;
    }
    .step-text {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 6: 资产标的与指标监控预览 */
    .preview-card-wrap {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .data-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9rem;
    }
    .data-table th {
      padding: 14px 16px;
      color: var(--text-muted);
      font-weight: 600;
      border-bottom: 1px solid var(--border-subtle);
      text-transform: uppercase;
      font-size: 0.75rem;
      letter-spacing: 0.05em;
    }
    .data-table td {
      padding: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
      color: var(--text-main);
    }
    .token-cell {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 600;
    }
    .status-pill {
      font-size: 0.75rem;
      padding: 4px 8px;
      border-radius: 4px;
      font-weight: 500;
    }
    .status-safe {
      background: rgba(0, 229, 163, 0.1);
      color: var(--accent-cyan);
    }
    .status-alert {
      background: rgba(255, 95, 86, 0.1);
      color: #FF5F56;
    }

    /* 板块 7: 深度资产分析资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-bottom: 1px solid var(--border-subtle);
    }
    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--accent-cyan);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.1rem;
      color: var(--accent-silver);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.85rem;
      color: var(--accent-cyan);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 8: 藏家与机构口碑墙 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.925rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 16px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--bg-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
      font-weight: bold;
      border: 1px solid var(--border-subtle);
    }
    .author-meta h5 {
      font-size: 0.95rem;
      color: var(--accent-silver);
    }
    .author-meta p {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-family: monospace;
    }

    /* 板块 9: 基础设施与数据条 */
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .metric-card {
      background: #111419;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px 16px;
    }
    .metric-val {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--accent-cyan);
      font-family: monospace;
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 板块 10: 常见问题手风琴 */
    .faq-container {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-summary {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--accent-silver);
      list-style: none;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: "+";
      font-size: 1.4rem;
      color: var(--accent-cyan);
      transition: transform 0.25s ease;
    }
    details[open] .faq-summary::after {
      content: "−";
    }
    .faq-content {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.7;
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      padding-top: 16px;
    }

    /* 板块 11: 接入沙盒申请表单 (线索与转化) */
    .cta-wrapper {
      background: linear-gradient(135deg, #161A22 0%, #0F1218 100%);
      border: 1px solid rgba(0, 229, 163, 0.3);
      border-radius: var(--radius-lg);
      padding: clamp(40px, 6vw, 70px) clamp(24px, 5vw, 60px);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .form-input {
      background: #090B0E;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: var(--text-main);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-input:focus {
      border-color: var(--accent-cyan);
    }
    .privacy-text {
      font-size: 0.75rem;
      color: #64748B;
      line-height: 1.5;
    }

    /* 板块 12: 风险防范与安全提示条 */
    .security-banner {
      background: #090B0E;
      border: 1px dashed var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .security-badge-icon {
      font-size: 2rem;
      color: var(--accent-cyan);
      flex-shrink: 0;
    }
    .security-text h5 {
      font-size: 0.95rem;
      color: var(--accent-silver);
      margin-bottom: 4px;
    }
    .security-text p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 页脚系统 */
    .site-footer {
      background: #08090C;
      border-top: 1px solid var(--border-subtle);
      padding: 60px 0 30px;
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.25rem;
      color: var(--accent-silver);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 0.95rem;
      color: var(--accent-silver);
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .grid-3, .news-grid, .reviews-grid, .tier-cards { grid-template-columns: repeat(2, 1fr); }
      .flow-steps { grid-template-columns: repeat(2, 1fr); }
      .metrics-row { grid-template-columns: repeat(2, 1fr); }
      .cta-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .grid-3, .news-grid, .reviews-grid, .tier-cards { grid-template-columns: 1fr; }
      .flow-steps { grid-template-columns: 1fr; }
      .metrics-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .countdown-bar { flex-direction: column; align-items: flex-start; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
    }