/* roulang page: index */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff4d6d;
      --accent-subtle: rgba(255, 77, 109, 0.12);
      --accent-border: rgba(255, 77, 109, 0.3);
      --border-color: #262a34;
      --border-light: #323846;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --container-max: 1200px;
    }

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

    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

    /* Magazine Masthead Navigation */
    .site-header {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .masthead-top {
      padding: 24px 0 16px;
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      border-bottom: 1px solid var(--border-color);
    }

    .site-logo {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
      text-transform: uppercase;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .site-logo span {
      color: var(--accent);
    }

    .masthead-meta {
      font-size: 13px;
      color: var(--text-dim);
      font-family: monospace;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 48px;
    }

    .site-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 12px 0;
    }

    .site-nav a:hover,
    .site-nav a.active {
      color: var(--text-main);
    }

    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }

    /* Section Base */
    section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-alt {
      background-color: var(--bg-secondary);
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header h2 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .section-header p {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 760px;
      line-height: 1.7;
    }

    /* Hero Section: Roadmap & Release Bar */
    .hero-section {
      padding: 96px 0 72px;
      background: linear-gradient(180deg, rgba(255, 77, 109, 0.05) 0%, transparent 100%), var(--bg-primary);
      position: relative;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--accent-subtle);
      border: 1px solid var(--accent-border);
      color: var(--accent);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      font-family: monospace;
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -1px;
      margin-bottom: 20px;
      max-width: 900px;
    }

    .hero-lead {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
      max-width: 780px;
      margin-bottom: 40px;
    }

    /* Roadmap Timeline Bar */
    .roadmap-bar {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 40px;
    }

    .roadmap-header {
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--text-dim);
      margin-bottom: 20px;
      display: flex;
      justify-content: space-between;
    }

    .roadmap-nodes {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      position: relative;
      gap: 16px;
    }

    .roadmap-nodes::before {
      content: "";
      position: absolute;
      top: 14px;
      left: 10px;
      right: 10px;
      height: 2px;
      background: var(--border-color);
      z-index: 1;
    }

    .node-item {
      position: relative;
      z-index: 2;
    }

    .node-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--border-light);
      margin-bottom: 12px;
      border: 2px solid var(--bg-card);
      outline: 2px solid transparent;
      transition: all 0.2s ease;
    }

    .node-item.active .node-dot {
      background: var(--accent);
      outline-color: var(--accent-subtle);
    }

    .node-tag {
      font-size: 12px;
      font-family: monospace;
      color: var(--accent);
      margin-bottom: 4px;
    }

    .node-title {
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 4px;
    }

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

    /* Hero Subscription Form */
    .hero-subscribe-box {
      max-width: 600px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 6px;
      border-radius: var(--radius-md);
      display: flex;
      gap: 8px;
    }

    .hero-subscribe-box input {
      flex: 1;
      background: transparent;
      border: none;
      padding: 10px 16px;
      color: var(--text-main);
      font-size: 14px;
      outline: none;
    }

    .hero-subscribe-box input::placeholder {
      color: var(--text-dim);
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      border: none;
      padding: 10px 24px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      white-space: nowrap;
      transition: opacity 0.2s ease;
    }

    .btn-primary:hover {
      opacity: 0.9;
    }

    /* Grid Layouts */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      align-items: center;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: border-color 0.2s ease, transform 0.2s ease;
    }

    .card:hover {
      border-color: var(--border-light);
      transform: translateY(-2px);
    }

    .card-num {
      font-size: 12px;
      font-family: monospace;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Career Matrix / Openings */
    .job-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .job-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }

    .job-item:hover {
      border-color: var(--border-light);
      background: var(--bg-card-hover);
    }

    .job-main h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .job-main p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .job-meta {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .tag-badge {
      font-size: 12px;
      padding: 4px 10px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      font-family: monospace;
    }

    .btn-sm {
      font-size: 13px;
      padding: 6px 14px;
      background: transparent;
      border: 1px solid var(--border-light);
      color: var(--text-main);
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .job-item:hover .btn-sm {
      border-color: var(--accent);
      color: var(--accent);
    }

    /* Culture / Atmosphere Grid */
    .photo-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .photo-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: var(--bg-card);
    }

    .photo-card img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .photo-card:hover img {
      transform: scale(1.03);
    }

    .photo-caption {
      padding: 16px;
      background: var(--bg-card);
    }

    .photo-caption h4 {
      font-size: 15px;
      margin-bottom: 4px;
    }

    .photo-caption p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* News & Changelog */
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .news-card img {
      height: 180px;
      width: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-body h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .news-body p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .news-date {
      font-size: 12px;
      color: var(--text-dim);
      font-family: monospace;
    }

    /* FAQ Component */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

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

    .faq-item h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .faq-item p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Application / Terminal Submission */
    .apply-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 48px;
      max-width: 800px;
      margin: 0 auto;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .form-input {
      width: 100%;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      padding: 12px 16px;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
    }

    .form-input:focus {
      border-color: var(--accent);
    }

    /* Footer */
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-color);
      padding: 64px 0 32px;
      font-size: 13px;
      color: var(--text-dim);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr repeat(3, 1fr);
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-brand h4 {
      color: var(--text-main);
      font-size: 18px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      max-width: 320px;
      line-height: 1.6;
    }

    .footer-links h5 {
      color: var(--text-main);
      font-size: 14px;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links ul {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .roadmap-nodes {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .roadmap-nodes::before {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .grid-3, .photo-grid, .faq-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .site-nav {
        overflow-x: auto;
        white-space: nowrap;
        gap: 20px;
      }
      .hero-title {
        font-size: 30px;
      }
      .apply-card {
        padding: 24px;
      }
      .job-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .job-meta {
        width: 100%;
        justify-content: space-between;
      }
    }

/* roulang page: index */
:root {
      --primary: #101216;
      --accent: #d93d59;
      --accent-subtle: #fae8eb;
      --bg: #fbfbfd;
      --card-bg: #ffffff;
      --text: #1a1d24;
      --text-muted: #5e6676;
      --border: #e7eaf0;
      --shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
      --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg);
      color: var(--text);
      font-family: var(--font-sans);
      line-height: 1.68;
      -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: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 杂志刊头导航 */
    .magazine-header {
      background: #ffffff;
      border-bottom: 2px solid var(--primary);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0 12px;
      border-bottom: 1px solid var(--border);
    }
    .site-brand {
      font-family: var(--font-serif);
      font-size: 26px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--primary);
    }
    .header-meta {
      font-size: 13px;
      color: var(--text-muted);
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      padding: 12px 0;
      overflow-x: auto;
      white-space: nowrap;
    }
    .site-nav a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 4px 0;
    }
    .site-nav a.active, .site-nav a:hover {
      color: var(--accent);
    }
    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: -12px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }

    /* 视觉基类 */
    section { padding: 88px 0; border-bottom: 1px solid var(--border); }
    .section-header { margin-bottom: 48px; }
    .section-eyebrow {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--accent);
      margin-bottom: 8px;
    }
    .section-title {
      font-family: var(--font-serif);
      font-size: 32px;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 780px;
      line-height: 1.7;
    }

    /* 按钮与徽章 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 4px;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: #282c34; transform: translateY(-1px); }
    .badge {
      display: inline-block;
      padding: 3px 8px;
      font-size: 11px;
      font-weight: 600;
      border-radius: 2px;
      background: var(--accent-subtle);
      color: var(--accent);
      margin-bottom: 12px;
    }

    /* Hero：路线图预告与版本节点条 */
    .hero-section {
      background: linear-gradient(180deg, #ffffff 0%, #f4f5f9 100%);
      padding: 72px 0 88px;
      position: relative;
    }
    .hero-layout {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }
    .hero-h1 {
      font-family: var(--font-serif);
      font-size: 40px;
      line-height: 1.25;
      color: var(--primary);
      margin-bottom: 24px;
    }
    .hero-lead {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-roadmap-bar {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 24px;
      box-shadow: var(--shadow);
    }
    .roadmap-timeline {
      display: flex;
      flex-direction: column;
      gap: 20px;
      position: relative;
    }
    .timeline-node {
      display: flex;
      gap: 16px;
      position: relative;
    }
    .timeline-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--accent);
      margin-top: 6px;
      flex-shrink: 0;
      box-shadow: 0 0 0 4px var(--accent-subtle);
    }
    .timeline-info h4 { font-size: 15px; margin-bottom: 4px; }
    .timeline-info p { font-size: 13px; color: var(--text-muted); }
    .sub-form {
      display: flex;
      gap: 8px;
      margin-top: 24px;
    }
    .sub-form input {
      flex: 1;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border);
      border-radius: 4px;
      outline: none;
    }
    .sub-form input:focus { border-color: var(--primary); }

    /* 通用栅格卡片 */
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
    
    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      padding: 32px;
      border-radius: 6px;
      box-shadow: var(--shadow);
      transition: transform 0.25s ease, border-color 0.25s ease;
    }
    .feature-card:hover {
      transform: translateY(-3px);
      border-color: #cbd2df;
    }
    .card-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
    .card-desc { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

    /* 热招职位卡片 */
    .job-card {
      border: 1px solid var(--border);
      background: #ffffff;
      padding: 24px;
      border-radius: 6px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .job-meta { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
    .job-salary { color: var(--accent); font-weight: 700; font-size: 15px; }

    /* 成长路径 */
    .path-step {
      border-left: 2px solid var(--primary);
      padding-left: 20px;
      position: relative;
    }
    .path-step::before {
      content: "";
      position: absolute;
      left: -6px;
      top: 0;
      width: 10px;
      height: 10px;
      background: var(--primary);
      border-radius: 50%;
    }

    /* FAQ 区块 */
    .faq-item {
      border-bottom: 1px solid var(--border);
      padding: 24px 0;
    }
    .faq-item:first-child { padding-top: 0; }
    .faq-q { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
    .faq-a { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* 投递入口与保障 */
    .apply-box {
      background: var(--primary);
      color: #ffffff;
      border-radius: 8px;
      padding: 56px 48px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .apply-box h3 { font-family: var(--font-serif); font-size: 28px; margin-bottom: 16px; }
    .apply-box p { color: #a1a9b8; font-size: 15px; margin-bottom: 24px; }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      padding: 64px 0 32px;
      border-top: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-col h5 { font-size: 14px; color: var(--primary); margin-bottom: 16px; font-weight: 700; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    @media (max-width: 1024px) {
      .hero-layout { grid-template-columns: 1fr; gap: 40px; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .apply-box { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .hero-h1 { font-size: 28px; }
      .section-title { font-size: 24px; }
    }

/* roulang page: category2 */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff4d6d;
      --accent-subtle: rgba(255, 77, 109, 0.12);
      --accent-border: rgba(255, 77, 109, 0.3);
      --border-color: #262a34;
      --border-light: #323846;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Magazine Masthead Navigation */
    .magazine-header {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .site-brand {
      font-size: 24px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .site-brand span {
      color: var(--accent);
    }
    .header-meta {
      font-size: 13px;
      color: var(--text-dim);
      font-family: monospace;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 48px;
      overflow-x: auto;
      white-space: nowrap;
    }
    .site-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 12px 0;
    }
    .site-nav a:hover,
    .site-nav a.active {
      color: var(--text-main);
    }
    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    /* Section Base */
    section {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-alt {
      background-color: var(--bg-secondary);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header.center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-header h2 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.7;
    }
    /* Breadcrumb */
    .breadcrumb-bar {
      padding: 14px 0;
      background: var(--bg-secondary);
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-dim);
    }
    .breadcrumb-bar a {
      color: var(--text-muted);
    }
    .breadcrumb-bar a:hover {
      color: var(--accent);
    }
    .breadcrumb-bar span {
      margin: 0 8px;
    }
    /* Lead Banner */
    .category-lead {
      position: relative;
      padding: 72px 0;
      background: radial-gradient(circle at 80% 20%, rgba(255, 77, 109, 0.08) 0%, transparent 60%), var(--bg-primary);
    }
    .category-lead-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--accent-subtle);
      border: 1px solid var(--accent-border);
      color: var(--accent);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
      font-family: monospace;
    }
    .category-lead h1 {
      font-size: 36px;
      line-height: 1.3;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .category-lead p {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 28px;
    }
    .lead-meta-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .chip {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
      font-family: monospace;
    }
    .lead-visual-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 16px 36px rgba(0,0,0,0.3);
    }
    .lead-visual-panel img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .lead-visual-caption {
      padding: 16px 20px;
      font-size: 13px;
      color: var(--text-dim);
      border-top: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
    }
    /* Grids & Cards */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .bus-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      position: relative;
    }
    .bus-card:hover {
      border-color: var(--accent-border);
      transform: translateY(-3px);
      box-shadow: 0 10px 24px rgba(0,0,0,0.25);
    }
    .bus-card-tag {
      font-family: monospace;
      font-size: 12px;
      color: var(--accent);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .bus-card h3 {
      font-size: 18px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .bus-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    /* Comparison / Data Matrix */
    .data-table-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .custom-table th {
      background: rgba(255,255,255,0.03);
      padding: 16px 20px;
      color: var(--text-main);
      font-weight: 600;
      border-bottom: 1px solid var(--border-color);
    }
    .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-muted);
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .status-ok {
      color: #10b981;
      font-family: monospace;
      font-weight: 600;
    }
    .badge-pipeline {
      background: rgba(255, 77, 109, 0.1);
      color: var(--accent);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-family: monospace;
    }
    /* Showcase Feed */
    .feed-card {
      display: flex;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .feed-card:hover {
      border-color: var(--border-light);
    }
    .feed-card img {
      width: 240px;
      height: 180px;
      object-fit: cover;
      flex-shrink: 0;
    }
    .feed-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .feed-content h3 {
      font-size: 18px;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feed-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .feed-stats {
      font-size: 12px;
      color: var(--text-dim);
      font-family: monospace;
      display: flex;
      gap: 16px;
    }
    /* Flow timeline steps */
    .flow-step-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      position: relative;
    }
    .flow-number {
      font-size: 32px;
      font-weight: 900;
      color: rgba(255, 77, 109, 0.2);
      line-height: 1;
      margin-bottom: 12px;
      font-family: monospace;
    }
    .flow-step-item h4 {
      font-size: 16px;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .flow-step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* CTA Block */
    .stream-cta-panel {
      background: linear-gradient(135deg, rgba(255, 77, 109, 0.12) 0%, rgba(18, 20, 26, 0.9) 100%), var(--bg-card);
      border: 1px solid var(--accent-border);
      border-radius: var(--radius-lg);
      padding: 48px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 40px;
    }
    .stream-cta-panel h3 {
      font-size: 24px;
      margin-bottom: 12px;
    }
    .stream-cta-panel p {
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.7;
      max-width: 680px;
    }
    .btn-action {
      background: var(--accent);
      color: #fff;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      display: inline-block;
      white-space: nowrap;
      transition: opacity 0.2s ease;
      border: none;
    }
    .btn-action:hover {
      opacity: 0.9;
    }
    /* Footer */
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-color);
      padding: 64px 0 24px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      color: var(--text-main);
      font-size: 15px;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col li {
      margin-bottom: 12px;
    }
    .footer-col a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      color: var(--text-dim);
      font-size: 13px;
    }
    /* Responsive */
    @media (max-width: 1024px) {
      .grid-4, .flow-step-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .category-lead-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .feed-card {
        flex-direction: column;
      }
      .feed-card img {
        width: 100%;
        height: 200px;
      }
      .stream-cta-panel {
        flex-direction: column;
        align-items: flex-start;
        padding: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
      }
    }

/* roulang page: category3 */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff4d6d;
      --accent-subtle: rgba(255, 77, 109, 0.12);
      --accent-border: rgba(255, 77, 109, 0.3);
      --border-color: #262a34;
      --border-light: #323846;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    .magazine-header {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-top {
      padding: 20px 0 12px;
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .site-brand {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
      font-family: var(--font-serif);
    }
    .header-meta {
      font-size: 13px;
      color: var(--text-dim);
      font-family: monospace;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 48px;
      overflow-x: auto;
      white-space: nowrap;
    }
    .site-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 12px 0;
    }
    .site-nav a:hover,
    .site-nav a.active {
      color: var(--text-main);
    }
    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-alt {
      background-color: var(--bg-secondary);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header h2 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 760px;
      line-height: 1.7;
    }
    .category-hero {
      position: relative;
      padding: 88px 0 72px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 77, 109, 0.12), transparent 45%), linear-gradient(180deg, #101217 0%, var(--bg-primary) 100%);
      overflow: hidden;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-subtle);
      border: 1px solid var(--accent-border);
      color: var(--accent);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      font-family: monospace;
      margin-bottom: 20px;
    }
    .category-hero h1 {
      font-size: 40px;
      line-height: 1.3;
      font-weight: 800;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
      max-width: 880px;
    }
    .hero-summary {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 820px;
      margin-bottom: 36px;
    }
    .hero-kpis {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      max-width: 900px;
    }
    .kpi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 20px;
      border-left: 3px solid var(--accent);
    }
    .kpi-val {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      font-family: monospace;
      margin-bottom: 4px;
    }
    .kpi-label {
      font-size: 13px;
      color: var(--text-dim);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      align-items: center;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }
    .card:hover {
      border-color: var(--border-light);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
    }
    .card-tag {
      font-size: 12px;
      font-family: monospace;
      color: var(--accent);
      margin-bottom: 12px;
      display: inline-block;
      letter-spacing: 0.5px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .card-meta-list {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px dashed var(--border-color);
      list-style: none;
      font-size: 13px;
      color: var(--text-dim);
    }
    .card-meta-list li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }
    .card-meta-list li span:last-child {
      color: var(--text-main);
      font-family: monospace;
    }
    .flow-step-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .flow-num {
      position: absolute;
      top: 16px;
      right: 18px;
      font-size: 28px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.06);
      font-family: monospace;
    }
    .flow-badge {
      display: inline-block;
      padding: 3px 8px;
      background: rgba(255, 77, 109, 0.15);
      color: var(--accent);
      font-size: 11px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
    }
    .flow-step-box h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .flow-step-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .spec-table-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .spec-table th,
    .spec-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .spec-table th {
      background: rgba(255, 255, 255, 0.02);
      color: var(--text-dim);
      font-weight: 600;
      text-transform: uppercase;
      font-size: 12px;
      letter-spacing: 0.5px;
    }
    .spec-table tr:hover td {
      background: rgba(255, 255, 255, 0.015);
    }
    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 2px 8px;
      border-radius: 999px;
      font-size: 12px;
      background: rgba(52, 211, 153, 0.1);
      color: #34d399;
      font-family: monospace;
    }
    .status-pill::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #34d399;
    }
    .cluster-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }
    .cluster-img-wrap img {
      width: 100%;
      height: auto;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .cluster-img-wrap:hover img {
      transform: scale(1.02);
    }
    .matrix-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }
    .matrix-item {
      padding: 8px 16px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .matrix-item b {
      color: var(--accent);
      font-family: monospace;
    }
    .site-footer {
      background: #08090b;
      padding: 72px 0 36px;
      border-top: 1px solid var(--border-color);
      font-size: 14px;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-col h5 {
      color: var(--text-main);
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      padding-top: 32px;
      border-top: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .header-top {
        flex-direction: column;
        gap: 6px;
      }
      .site-brand {
        font-size: 22px;
      }
      .category-hero h1 {
        font-size: 28px;
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .grid-3,
      .grid-4 {
        grid-template-columns: 1fr;
      }
      .hero-kpis {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }
    @media (max-width: 520px) {
      .hero-kpis {
        grid-template-columns: 1fr;
      }
      section {
        padding: 56px 0;
      }
      .site-nav {
        gap: 20px;
      }
    }

/* roulang page: category1 */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff4d6d;
      --accent-subtle: rgba(255, 77, 109, 0.12);
      --accent-border: rgba(255, 77, 109, 0.3);
      --border-color: #262a34;
      --border-light: #323846;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, opacity 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Magazine Header */
    .magazine-header {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-top {
      padding: 16px 0 12px;
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .site-brand {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
      display: inline-block;
    }
    .header-meta {
      font-size: 13px;
      color: var(--text-dim);
      font-family: monospace;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 48px;
      overflow-x: auto;
      white-space: nowrap;
    }
    .site-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 12px 0;
    }
    .site-nav a:hover,
    .site-nav a.active {
      color: var(--text-main);
    }
    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    /* Page Core Sections */
    section {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-alt {
      background-color: var(--bg-secondary);
    }
    .section-head {
      margin-bottom: 36px;
    }
    .section-head .tag {
      font-size: 12px;
      font-family: monospace;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }
    .section-head h2 {
      font-size: 26px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 10px;
    }
    .section-head p {
      color: var(--text-muted);
      font-size: 14px;
      max-width: 800px;
      line-height: 1.7;
    }
    /* Blueprint Hero: Vertical Screen Tone */
    .vertical-hero {
      padding: 64px 0;
      background: radial-gradient(circle at top right, rgba(255, 77, 109, 0.08) 0%, transparent 60%), var(--bg-primary);
    }
    .hero-layout {
      display: grid;
      grid-template-columns: 340px 1fr;
      gap: 48px;
      align-items: center;
    }
    .vertical-mockup {
      width: 100%;
      aspect-ratio: 9 / 16;
      border-radius: 24px;
      background: #000;
      border: 3px solid var(--border-light);
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .mockup-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.85;
      filter: contrast(1.05);
    }
    .mockup-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(10,11,14,0.9) 90%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 24px;
    }
    .mockup-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 77, 109, 0.2);
      border: 1px solid var(--accent);
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 12px;
      align-self: flex-start;
    }
    .mockup-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }
    .mockup-title {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 8px;
    }
    .mockup-bar {
      height: 4px;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 2px;
      overflow: hidden;
      margin-top: 8px;
    }
    .mockup-progress {
      width: 82%;
      height: 100%;
      background: var(--accent);
    }
    .hero-content h1 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .hero-content .summary {
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .btn-buy {
      background: var(--accent);
      color: #fff;
      padding: 12px 28px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-buy:hover {
      opacity: 0.9;
    }
    .btn-outline {
      border: 1px solid var(--border-light);
      background: var(--bg-card);
      color: var(--text-main);
      padding: 12px 28px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
    }
    .btn-outline:hover {
      border-color: var(--accent);
    }
    /* Matrices & Cards */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .tech-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .tech-card:hover {
      border-color: var(--accent-border);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }
    .card-label {
      font-size: 12px;
      font-family: monospace;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .tech-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .tech-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .card-footer-meta {
      border-top: 1px solid var(--border-color);
      padding-top: 12px;
      font-size: 12px;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
      font-family: monospace;
    }
    /* Visual Spec Panel */
    .visual-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      overflow: hidden;
    }
    .visual-split img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .spec-item {
      margin-bottom: 18px;
    }
    .spec-item:last-child {
      margin-bottom: 0;
    }
    .spec-item h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .spec-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* Pipeline Timeline */
    .timeline-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-node {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-md);
      border-top: 3px solid var(--accent);
    }
    .timeline-node .step {
      font-size: 11px;
      font-family: monospace;
      color: var(--accent);
      margin-bottom: 8px;
    }
    .timeline-node h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .timeline-node p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* FAQ Block */
    .faq-grid {
      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: 20px;
    }
    .faq-card h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .faq-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    /* Footer */
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-color);
      padding: 64px 0 32px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      font-size: 14px;
      color: var(--text-main);
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-dim);
    }
    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-layout {
        grid-template-columns: 280px 1fr;
        gap: 32px;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
      }
      .hero-layout {
        grid-template-columns: 1fr;
      }
      .vertical-mockup {
        max-width: 260px;
        margin: 0 auto;
      }
      .grid-3, .grid-2, .grid-4, .timeline-strip, .faq-grid {
        grid-template-columns: 1fr;
      }
      .visual-split {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
    }

/* roulang page: category4 */
:root {
      --bg-primary: #0a0b0e;
      --bg-secondary: #12141a;
      --bg-card: #181b22;
      --bg-card-hover: #1f232c;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
      --text-dim: #6b7280;
      --accent: #ff4d6d;
      --accent-subtle: rgba(255, 77, 109, 0.12);
      --accent-border: rgba(255, 77, 109, 0.3);
      --border-color: #262a34;
      --border-light: #323846;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --container-max: 1200px;
      --primary: #101216;
      --font-serif: "Songti SC", "SimSun", "Noto Serif SC", serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, opacity 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Magazine Masthead Navigation */
    .magazine-header {
      background: var(--bg-primary);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .site-brand {
      font-size: 24px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .site-brand span {
      color: var(--accent);
    }
    .header-meta {
      font-size: 13px;
      color: var(--text-dim);
      font-family: monospace;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 48px;
      overflow-x: auto;
      white-space: nowrap;
    }
    .site-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 12px 0;
    }
    .site-nav a:hover,
    .site-nav a.active {
      color: var(--text-main);
    }
    .site-nav a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    /* Section Base */
    section {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-alt {
      background-color: var(--bg-secondary);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header h2 {
      font-size: 26px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 780px;
      line-height: 1.7;
    }
    /* Custom Hero for Category 4: Broadcast & Security Protocol Focus */
    .hero-broadcast {
      position: relative;
      padding: 70px 0;
      background: linear-gradient(180deg, rgba(255, 77, 109, 0.08) 0%, rgba(10, 11, 14, 0.95) 100%), url('/assets/images/33e40fdc4b37eb42.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--accent-subtle);
      border: 1px solid var(--accent-border);
      color: var(--accent);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
      font-family: monospace;
    }
    .hero-title {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 28px;
    }
    .broadcast-card {
      background: rgba(24, 27, 34, 0.92);
      backdrop-filter: blur(12px);
      border: 1px solid var(--accent-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .broadcast-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
    }
    .status-live {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: var(--accent);
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .status-live::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 0.7; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.7; }
    }
    .countdown-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      margin: 16px 0 20px;
      text-align: center;
    }
    .countdown-unit {
      background: var(--bg-secondary);
      padding: 12px 6px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .countdown-val {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      font-family: monospace;
    }
    .countdown-lbl {
      font-size: 11px;
      color: var(--text-dim);
      margin-top: 4px;
    }
    .hero-subscribe-box {
      display: flex;
      gap: 8px;
      background: var(--bg-primary);
      border: 1px solid var(--border-color);
      padding: 4px;
      border-radius: var(--radius-sm);
    }
    .hero-subscribe-box input {
      flex: 1;
      background: transparent;
      border: none;
      padding: 8px 12px;
      color: var(--text-main);
      font-size: 13px;
      outline: none;
    }
    .btn-primary {
      background: var(--accent);
      color: #fff;
      border: none;
      padding: 10px 20px;
      font-size: 13px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      white-space: nowrap;
      transition: opacity 0.2s ease;
    }
    .btn-primary:hover {
      opacity: 0.88;
    }
    /* Layout Grids */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: border-color 0.2s ease, transform 0.2s ease;
    }
    .card:hover {
      border-color: var(--border-light);
      transform: translateY(-2px);
    }
    .card-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent);
      font-family: monospace;
      margin-bottom: 8px;
      display: inline-block;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    /* Media Cards */
    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .media-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .media-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .media-body h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .media-body p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
      flex: 1;
    }
    .media-meta {
      font-size: 12px;
      color: var(--text-dim);
      font-family: monospace;
      display: flex;
      justify-content: space-between;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 12px;
    }
    /* Horizontal Audit Flow */
    .flow-step-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .flow-step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      position: relative;
    }
    .flow-num {
      width: 32px;
      height: 32px;
      background: var(--accent-subtle);
      color: var(--accent);
      border: 1px solid var(--accent-border);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 13px;
      margin-bottom: 14px;
    }
    .flow-step-card h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .flow-step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* Comparison Matrix */
    .spec-table-wrap {
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
      background: var(--bg-card);
    }
    .spec-table th, .spec-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .spec-table th {
      background: var(--bg-secondary);
      color: var(--text-main);
      font-weight: 600;
    }
    .spec-table tr:hover td {
      background: var(--bg-card-hover);
    }
    /* Action Band */
    .security-action-strip {
      background: linear-gradient(90deg, #161820 0%, #1a1d26 100%);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 32px;
    }
    .strip-content h3 {
      font-size: 24px;
      margin-bottom: 8px;
    }
    .strip-content p {
      color: var(--text-muted);
      font-size: 14.5px;
      max-width: 650px;
    }
    /* Site Footer */
    .site-footer {
      background: #08090b;
      padding: 60px 0 24px;
      border-top: 1px solid var(--border-color);
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      color: var(--text-main);
      font-size: 15px;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-dim);
    }
    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .flow-step-list { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .hero-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .security-action-strip { flex-direction: column; align-items: flex-start; }
      .header-top { flex-direction: column; align-items: flex-start; gap: 8px; }
      .site-nav { width: 100%; gap: 20px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    }
    @media (max-width: 520px) {
      .grid-4 { grid-template-columns: 1fr; }
      .flow-step-list { grid-template-columns: 1fr; }
      .hero-title { font-size: 28px; }
      .countdown-val { font-size: 18px; }
    }