/* roulang page: index */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-accent: rgba(255, 75, 106, 0.3);
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff3366;
      --accent-glow: rgba(255, 51, 102, 0.25);
      --accent-subtle: #24141c;
      --accent-teal: #00e5ff;
      --container-width: 1280px;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* 帮助文档式极简顶栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 14, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      height: 68px;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
      gap: 24px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand-logo {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent), #ff6b8b);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 0 16px var(--accent-glow);
    }

    .brand-title {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
    }

    .brand-tag {
      font-size: 11px;
      padding: 2px 6px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      color: var(--accent-teal);
    }

    .header-search {
      flex: 1;
      max-width: 440px;
      position: relative;
    }

    .search-input {
      width: 100%;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 8px 14px 8px 36px;
      color: #fff;
      font-size: 13px;
      outline: none;
      transition: var(--transition);
    }

    .search-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 12px var(--accent-glow);
      background: var(--bg-card);
    }

    .search-icon {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      width: 14px;
      height: 14px;
      fill: var(--text-dim);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .nav-link {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }

    .nav-link:hover, .nav-link.active {
      color: #fff;
      background: var(--bg-card);
    }

    .badge-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: #10b981;
      background: rgba(16, 185, 129, 0.1);
      padding: 4px 10px;
      border-radius: 99px;
      border: 1px solid rgba(16, 185, 129, 0.2);
    }

    .pulse-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 8px #10b981;
    }

    /* 按钮通用系统 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 4px 18px var(--accent-glow);
    }

    .btn-primary:hover {
      background: #ff1f59;
      transform: translateY(-2px);
      box-shadow: 0 6px 22px rgba(255, 51, 102, 0.4);
    }

    .btn-secondary {
      background: var(--bg-card);
      border-color: var(--border-color);
      color: var(--text-main);
    }

    .btn-secondary:hover {
      background: var(--bg-card-hover);
      border-color: var(--text-muted);
      color: #fff;
    }

    /* 板块通用布局 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .section-wrap:nth-child(even) {
      background: var(--bg-secondary);
    }

    .section-head {
      margin-bottom: 40px;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
      line-height: 1.3;
    }

    .section-desc {
      margin-top: 12px;
      font-size: 15px;
      color: var(--text-muted);
      max-width: 780px;
      line-height: 1.7;
    }

    /* 蓝图 Hero：左文右图 5:7 斜向错位 */
    .hero-section {
      padding: 70px 0 100px;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 85% 30%, rgba(255, 51, 102, 0.12), transparent 50%),
                  radial-gradient(circle at 10% 70%, rgba(0, 229, 255, 0.05), transparent 40%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 50px;
      align-items: center;
    }

    .hero-content {
      z-index: 2;
    }

    .hero-h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: #fff;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, #fff 30%, var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .hero-kpi-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
    }

    .kpi-item h4 {
      font-size: 26px;
      font-weight: 800;
      color: #fff;
      font-variant-numeric: tabular-nums;
    }

    .kpi-item p {
      font-size: 12px;
      color: var(--text-dim);
      margin-top: 2px;
    }

    /* 右侧 7 份：斜向错位视觉画卷展台 */
    .hero-stage {
      position: relative;
      height: 480px;
      perspective: 1200px;
    }

    .stage-card-back, .stage-card-front {
      position: absolute;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
      transition: var(--transition);
    }

    .stage-card-back {
      width: 78%;
      height: 380px;
      right: 0;
      top: 0;
      transform: rotate(5deg) skew(-2deg);
      background: linear-gradient(145deg, #1c1f28, #101217);
      border-color: rgba(255, 255, 255, 0.12);
      z-index: 1;
    }

    .stage-card-front {
      width: 84%;
      height: 400px;
      left: 0;
      bottom: 0;
      transform: rotate(-3deg);
      background: linear-gradient(135deg, #242935, #141720);
      border-color: var(--border-accent);
      z-index: 2;
      display: flex;
      flex-direction: column;
    }

    .stage-mock-header {
      padding: 16px 20px;
      background: rgba(0, 0, 0, 0.35);
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .mock-dots {
      display: flex;
      gap: 6px;
    }

    .mock-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
    }

    .mock-dot.active {
      background: var(--accent);
    }

    .stage-mock-body {
      padding: 24px;
      flex: 1;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .mock-thumb-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px dashed rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-sm);
      padding: 16px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      position: relative;
      overflow: hidden;
    }

    .thumb-glow {
      position: absolute;
      top: -20px;
      right: -20px;
      width: 80px;
      height: 80px;
      background: var(--accent-glow);
      filter: blur(30px);
      border-radius: 50%;
    }

    .mock-tag {
      font-size: 10px;
      color: var(--accent-teal);
      margin-bottom: 4px;
      font-weight: 600;
    }

    .mock-title {
      font-size: 13px;
      color: #fff;
      font-weight: 700;
    }

    /* 数据指标看板卡片组 (变体E) */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      position: relative;
    }

    .metric-card:hover {
      border-color: rgba(255, 51, 102, 0.4);
      transform: translateY(-4px);
    }

    .metric-val {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      line-height: 1;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .metric-sub {
      font-size: 12px;
      color: var(--text-dim);
      line-height: 1.5;
    }

    /* 能力矩阵：已上线功能 / 进行中 / 规划中 */
    .roadmap-cols {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .roadmap-col {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
    }

    .col-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 16px;
      margin-bottom: 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .col-badge {
      font-size: 11px;
      padding: 4px 8px;
      border-radius: 4px;
      font-weight: 700;
      text-transform: uppercase;
    }

    .badge-live {
      background: rgba(16, 185, 129, 0.15);
      color: #10b981;
      border: 1px solid rgba(16, 185, 129, 0.3);
    }

    .badge-wip {
      background: rgba(0, 229, 255, 0.15);
      color: var(--accent-teal);
      border: 1px solid rgba(0, 229, 255, 0.3);
    }

    .badge-plan {
      background: rgba(255, 51, 102, 0.15);
      color: var(--accent);
      border: 1px solid var(--border-accent);
    }

    .roadmap-items {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .feature-item {
      padding: 14px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
    }

    .feature-item h5 {
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }

    .feature-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 结果对比表格/面板 */
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-card);
    }

    .compare-table th, .compare-table td {
      padding: 18px 24px;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: rgba(255, 255, 255, 0.03);
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .col-highlight {
      background: rgba(255, 51, 102, 0.04);
      color: #fff;
      font-weight: 600;
    }

    /* 历史里程碑时间线 */
    .timeline-wrap {
      position: relative;
      padding-left: 32px;
    }

    .timeline-wrap::before {
      content: "";
      position: absolute;
      left: 7px;
      top: 10px;
      bottom: 10px;
      width: 2px;
      background: var(--border-color);
    }

    .timeline-node {
      position: relative;
      margin-bottom: 36px;
    }

    .timeline-node:last-child {
      margin-bottom: 0;
    }

    .timeline-pin {
      position: absolute;
      left: -32px;
      top: 6px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--bg-primary);
      border: 3px solid var(--accent);
    }

    .timeline-date {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 0.5px;
      margin-bottom: 4px;
    }

    .timeline-title {
      font-size: 17px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }

    .timeline-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 资讯列表：左图右文结构 (蓝图强要求) */
    .news-flow {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .news-card-hz {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .news-card-hz:hover {
      border-color: rgba(255, 51, 102, 0.4);
      transform: translateX(4px);
    }

    .news-poster {
      position: relative;
      background: #1f232c;
      min-height: 180px;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .poster-graphics {
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, #1d212b, #2a2028);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255, 255, 255, 0.15);
      font-size: 32px;
      font-weight: 900;
      letter-spacing: 2px;
    }

    .news-info {
      padding: 24px 24px 24px 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 10px;
    }

    .news-cat {
      color: var(--accent-teal);
      font-weight: 600;
    }

    .news-headline {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      line-height: 1.4;
      margin-bottom: 10px;
    }

    .news-snippet {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台保障四格矩阵 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .guarantee-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .guarantee-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(255, 51, 102, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      margin-bottom: 16px;
      font-size: 20px;
      font-weight: bold;
    }

    .guarantee-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .guarantee-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 快速解答与常见问题折叠面板 */
    .faq-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .faq-q {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .faq-q::before {
      content: "Q";
      color: var(--accent);
      font-weight: 900;
    }

    .faq-a {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      padding-left: 20px;
    }

    /* 异议拆解双栏 (可选特色板块) */
    .objection-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .objection-card {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--accent);
      padding: 24px;
      border-radius: var(--radius-sm);
    }

    .objection-doubt {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .objection-reply {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 订阅与转化表单收口行动 (蓝图变体E收尾) */
    .subscribe-box {
      background: linear-gradient(135deg, #1b1622, #101217);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .subscribe-box::after {
      content: "";
      position: absolute;
      top: -50%;
      left: 50%;
      transform: translateX(-50%);
      width: 400px;
      height: 200px;
      background: var(--accent-glow);
      filter: blur(80px);
      border-radius: 50%;
      pointer-events: none;
    }

    .subscribe-title {
      font-size: 30px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
      position: relative;
      z-index: 1;
    }

    .subscribe-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto 30px;
      position: relative;
      z-index: 1;
      line-height: 1.6;
    }

    .subscribe-form {
      display: flex;
      max-width: 520px;
      margin: 0 auto 16px;
      gap: 12px;
      position: relative;
      z-index: 1;
    }

    .subscribe-input {
      flex: 1;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }

    .subscribe-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 16px var(--accent-glow);
    }

    .subscribe-note {
      font-size: 12px;
      color: var(--text-dim);
      position: relative;
      z-index: 1;
    }

    /* 统一标准页脚 */
    .site-footer {
      background: #08090b;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      color: var(--text-dim);
      font-size: 13px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      font-size: 18px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: var(--accent);
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-stage {
        height: 380px;
        max-width: 600px;
        margin: 0 auto;
        width: 100%;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .roadmap-cols {
        grid-template-columns: 1fr;
      }
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-search {
        display: none;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 24px;
      }
      .news-card-hz {
        grid-template-columns: 1fr;
      }
      .news-info {
        padding: 20px;
      }
      .faq-container, .objection-grid {
        grid-template-columns: 1fr;
      }
      .subscribe-form {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-kpi-bar {
        grid-template-columns: 1fr;
        gap: 12px;
      }
    }