/* roulang page: index */
:root {
      --c-slate-dark: #1E2229;
      --c-slate-deep: #181B20;
      --c-sand-bg: #F5F4F0;
      --c-sand-card: #FAF9F6;
      --c-sand-alt: #EAE7E1;
      --c-sand-border: #E2DED6;
      --c-terracotta: #C86432;
      --c-terracotta-hover: #B04F22;
      --c-text-main: #2A2E35;
      --c-text-muted: #636A75;
      --c-text-light: #8E95A0;
      --c-white: #FFFFFF;
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-subtle: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 14px 32px rgba(0,0,0,0.08);
      --lh-text: 1.8;
      --lh-title: 1.3;
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--c-sand-bg);
      color: var(--c-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: var(--lh-text);
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: color .25s ease; }
    a:hover { color: var(--c-terracotta); }
    img { max-width: 100%; height: auto; display: block; }
    h1, h2, h3, h4, h5 {
      color: var(--c-slate-dark);
      line-height: var(--lh-title);
      font-weight: 700;
      margin-top: 0;
    }
    p { margin-bottom: 1.25rem; }
    .site-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .sec-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--c-sand-border);
    }
    .sec-wrap-alt {
      background-color: var(--c-sand-alt);
    }
    .sec-header {
      margin-bottom: 48px;
    }
    .sec-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--c-terracotta);
      text-transform: uppercase;
      margin-bottom: 10px;
      border-left: 3px solid var(--c-terracotta);
      padding-left: 8px;
    }
    .sec-title {
      font-size: 28px;
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }
    .sec-desc {
      font-size: 15px;
      color: var(--c-text-muted);
      max-width: 820px;
      margin-bottom: 0;
    }

    /* Top Bar */
    .top-info-bar {
      height: 38px;
      background-color: #EFECE6;
      border-bottom: 1px solid var(--c-sand-border);
      font-size: 12px;
      color: var(--c-text-muted);
      display: flex;
      align-items: center;
    }
    .top-info-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .node-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .node-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background-color: #2da44e;
      box-shadow: 0 0 0 2px rgba(45,164,78,0.2);
    }

    /* Main Nav */
    .site-header {
      height: 76px;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--c-sand-border);
      position: sticky;
      top: 0;
      z-index: 999;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 800;
      color: var(--c-slate-dark);
      letter-spacing: -0.01em;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background-color: var(--c-slate-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--c-text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-links li a.active,
    .nav-links li a:hover {
      color: var(--c-terracotta);
    }
    .nav-links li a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--c-terracotta);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* Buttons */
    .btn-terra {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--c-terracotta);
      color: #FFF !important;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--c-terracotta);
      cursor: pointer;
      transition: all .25s ease;
      text-align: center;
    }
    .btn-terra:hover {
      background-color: var(--c-terracotta-hover);
      border-color: var(--c-terracotta-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: transparent;
      color: var(--c-slate-dark) !important;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--c-slate-dark);
      cursor: pointer;
      transition: all .25s ease;
    }
    .btn-outline:hover {
      background-color: var(--c-slate-dark);
      color: #FFF !important;
    }

    /* Hero Section (Before / After Split) */
    .hero-sec {
      background: linear-gradient(180deg, #FFFFFF 0%, var(--c-sand-bg) 100%);
      padding: 80px 0 60px;
      border-bottom: 1px solid var(--c-sand-border);
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 800;
      line-height: 1.28;
      color: var(--c-slate-dark);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-intro {
      font-size: 16px;
      line-height: 1.85;
      color: var(--c-text-muted);
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .split-contrast-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      background: #FFF;
      padding: 24px;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-subtle);
    }
    .contrast-box {
      padding: 20px;
      border-radius: var(--radius-sm);
    }
    .contrast-box.before {
      background: #FAF8F5;
      border-left: 3px solid #D07368;
    }
    .contrast-box.after {
      background: #F4F8F5;
      border-left: 3px solid #489A65;
    }
    .contrast-tag {
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 8px;
      display: inline-block;
    }
    .before .contrast-tag { color: #A83226; }
    .after .contrast-tag { color: #2B7A46; }

    /* Cards & Grids */
    .catalog-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      padding: 28px 24px;
      border-radius: var(--radius-sm);
      height: 100%;
      box-shadow: var(--shadow-subtle);
      transition: all .3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    .catalog-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #D3CDC2;
    }
    .catalog-num {
      font-size: 13px;
      font-weight: 700;
      color: var(--c-terracotta);
      margin-bottom: 12px;
      display: block;
      font-family: monospace;
    }
    .card-title {
      font-size: 18px;
      margin-bottom: 12px;
      color: var(--c-slate-dark);
    }

    /* Metric Strip */
    .metric-strip {
      background: var(--c-slate-dark);
      color: #FFF;
      padding: 40px 24px;
      border-radius: var(--radius-md);
    }
    .metric-item {
      text-align: center;
      padding: 16px;
      border-right: 1px solid rgba(255,255,255,0.1);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-num {
      font-size: 36px;
      font-weight: 800;
      color: #FFF;
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: -apple-system, BlinkMacSystemFont, monospace;
    }
    .metric-label {
      font-size: 13px;
      color: var(--c-sand-alt);
      font-weight: 500;
    }

    /* Console Tabs Demo */
    .console-stage {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
    }
    .console-header-bar {
      background: #ECE9E2;
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--c-sand-border);
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #CCC6BD;
    }
    .console-body {
      padding: 30px;
    }

    /* Timeline */
    .timeline-wrap {
      position: relative;
      padding-left: 20px;
      border-left: 2px solid var(--c-sand-border);
      margin-left: 10px;
    }
    .timeline-node {
      position: relative;
      margin-bottom: 36px;
    }
    .timeline-node::before {
      content: "";
      position: absolute;
      left: -27px;
      top: 4px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--c-terracotta);
      border: 2px solid #FFF;
    }

    /* Pricing Matrix */
    .tier-box {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      height: 100%;
      transition: all .3s ease;
    }
    .tier-box.featured {
      border: 2px solid var(--c-terracotta);
      transform: scale(1.02);
      box-shadow: var(--shadow-hover);
    }
    .tier-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--c-terracotta);
      color: #FFF;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 20px;
    }

    /* Feedback Wall */
    .review-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      padding: 24px;
      border-radius: var(--radius-sm);
      height: 100%;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
    }
    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--c-sand-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--c-slate-dark);
      font-size: 14px;
    }

    /* Accordion FAQ */
    .faq-item {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      margin-bottom: 12px;
      border-radius: var(--radius-sm);
      overflow: hidden;
    }
    .faq-q {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--c-slate-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-q:hover {
      background-color: #FCFBF9;
    }
    .faq-a {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.75;
      display: block;
    }

    /* Form Card */
    .apply-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-md);
      padding: 40px;
      box-shadow: var(--shadow-hover);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--c-slate-dark);
      margin-bottom: 6px;
      display: block;
    }
    .form-control {
      width: 100%;
      height: 44px;
      border: 1px solid var(--c-sand-border);
      background-color: #FAFAF8;
      border-radius: var(--radius-sm);
      padding: 8px 14px;
      font-size: 14px;
      color: var(--c-text-main);
      transition: border-color .2s;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--c-terracotta);
      background-color: #FFF;
    }

    /* Footer */
    .site-footer {
      background-color: var(--c-slate-deep);
      color: #8E95A0;
      padding: 60px 0 30px;
      font-size: 13px;
      line-height: 1.7;
    }
    .footer-title {
      font-size: 15px;
      color: #EAE7E1;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-list li {
      margin-bottom: 10px;
    }
    .footer-list a {
      color: #A0A7B2;
    }
    .footer-list a:hover {
      color: #FFF;
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255,255,255,0.08);
      text-align: center;
      font-size: 12px;
      color: #636A75;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-h1 { font-size: 32px; }
      .metric-item { padding: 12px 8px; }
      .metric-num { font-size: 28px; }
    }
    @media (max-width: 768px) {
      .top-info-bar { display: none; }
      .hero-sec { padding: 50px 0 40px; }
      .hero-h1 { font-size: 26px; }
      .split-contrast-panel { grid-template-columns: 1fr; }
      .tier-box.featured { transform: none; }
      .nav-links { display: none; }
      .metric-strip .grid-x > .cell { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 12px; }
    }

/* roulang page: category1 */
:root {
      --c-slate-dark: #1E2229;
      --c-slate-deep: #181B20;
      --c-sand-bg: #F5F4F0;
      --c-sand-card: #FAF9F6;
      --c-sand-alt: #EAE7E1;
      --c-sand-border: #E2DED6;
      --c-terracotta: #C86432;
      --c-terracotta-hover: #B04F22;
      --c-text-main: #2A2E35;
      --c-text-muted: #636A75;
      --c-text-light: #8E95A0;
      --c-white: #FFFFFF;
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-subtle: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 14px 32px rgba(0,0,0,0.08);
      --lh-text: 1.8;
      --lh-title: 1.3;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      padding: 0;
      background-color: var(--c-sand-bg);
      color: var(--c-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: var(--lh-text);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .25s ease;
    }
    a:hover {
      color: var(--c-terracotta);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* Top Info Bar */
    .top-info-bar {
      height: 38px;
      background-color: #EFECE6;
      border-bottom: 1px solid var(--c-sand-border);
      font-size: 13px;
      color: var(--c-text-muted);
      display: flex;
      align-items: center;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #2B7A46;
      border-radius: 50%;
      margin-right: 6px;
    }
    /* Main Nav */
    .site-header {
      height: 76px;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--c-sand-border);
      position: sticky;
      top: 0;
      z-index: 999;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 800;
      color: var(--c-slate-dark);
      letter-spacing: -0.01em;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background-color: var(--c-slate-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--c-text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-links li a.active,
    .nav-links li a:hover {
      color: var(--c-terracotta);
    }
    .nav-links li a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--c-terracotta);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-terra {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--c-terracotta);
      color: #FFF !important;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--c-terracotta);
      cursor: pointer;
      transition: all .25s ease;
      text-align: center;
    }
    .btn-terra:hover {
      background-color: var(--c-terracotta-hover);
      border-color: var(--c-terracotta-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: transparent;
      color: var(--c-slate-dark) !important;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--c-slate-dark);
      cursor: pointer;
      transition: all .25s ease;
    }
    .btn-outline:hover {
      background-color: var(--c-slate-dark);
      color: #FFF !important;
    }
    /* Section Shared Styles */
    .content-sec {
      padding: 64px 0;
      border-bottom: 1px solid var(--c-sand-border);
    }
    .sec-header {
      margin-bottom: 40px;
    }
    .sec-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.06em;
      color: var(--c-terracotta);
      text-transform: uppercase;
      margin-bottom: 8px;
      border-left: 3px solid var(--c-terracotta);
      padding-left: 8px;
    }
    .sec-title {
      font-size: 26px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 10px;
      line-height: var(--lh-title);
    }
    .sec-subtitle {
      font-size: 15px;
      color: var(--c-text-muted);
      margin: 0;
    }
    /* Section 1: Category Header / Intro */
    .cat-head-wrap {
      background-color: #FFF;
      border-bottom: 1px solid var(--c-sand-border);
      padding: 36px 0 28px;
    }
    .breadcrumb-nav {
      font-size: 13px;
      color: var(--c-text-light);
      margin-bottom: 14px;
    }
    .breadcrumb-nav a {
      color: var(--c-text-muted);
    }
    .breadcrumb-nav a:hover {
      color: var(--c-terracotta);
    }
    .cat-h1 {
      font-size: 30px;
      font-weight: 800;
      color: var(--c-slate-dark);
      line-height: 1.3;
      margin-bottom: 12px;
      letter-spacing: -0.01em;
    }
    .cat-summary {
      font-size: 15px;
      color: var(--c-text-muted);
      max-width: 860px;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 10px;
    }
    .filter-pill {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      background-color: var(--c-sand-bg);
      border: 1px solid var(--c-sand-border);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--c-text-main);
      cursor: pointer;
      transition: all .2s ease;
    }
    .filter-pill:hover,
    .filter-pill.active {
      background-color: var(--c-slate-dark);
      color: #FFF;
      border-color: var(--c-slate-dark);
    }
    .filter-pill .pill-count {
      margin-left: 6px;
      font-size: 11px;
      opacity: 0.8;
    }
    /* Section 2: Catalog Matrix Cards */
    .catalog-item-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
      transition: all .3s cubic-bezier(0.25, 0.8, 0.25, 1);
      display: flex;
      flex-direction: column;
      height: 100%;
      margin-bottom: 30px;
    }
    .catalog-item-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #D3CDC2;
    }
    .card-thumb-box {
      position: relative;
      background-color: #E8E4DC;
      overflow: hidden;
      height: 200px;
    }
    .card-thumb-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .catalog-item-card:hover .card-thumb-box img {
      transform: scale(1.04);
    }
    .node-status-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(30, 34, 41, 0.85);
      backdrop-filter: blur(4px);
      color: #FFF;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }
    .node-status-badge.live {
      border-left: 3px solid #2B7A46;
    }
    .card-body {
      padding: 22px 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .card-area-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--c-terracotta);
      margin-bottom: 6px;
      text-transform: uppercase;
    }
    .card-item-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .card-excerpt {
      font-size: 13px;
      color: var(--c-text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .card-specs-list {
      border-top: 1px solid var(--c-sand-border);
      padding-top: 14px;
      margin-bottom: 16px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      font-size: 12px;
      color: var(--c-text-main);
    }
    .spec-line span {
      color: var(--c-text-light);
    }
    .card-footer-action {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      font-weight: 600;
    }
    .card-footer-action a {
      color: var(--c-terracotta);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .card-footer-action a:hover {
      color: var(--c-terracotta-hover);
    }
    /* Section 3: Filter & Metrics Dashboard */
    .filter-board-sec {
      background-color: #ECEAE4;
    }
    .panel-box {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      padding: 28px;
      box-shadow: var(--shadow-subtle);
    }
    .filter-ctrl-group {
      margin-bottom: 20px;
    }
    .filter-ctrl-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 8px;
      display: block;
    }
    .filter-select {
      width: 100%;
      height: 42px;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      padding: 0 12px;
      font-size: 14px;
      background-color: var(--c-sand-bg);
      color: var(--c-text-main);
      outline: none;
    }
    .filter-select:focus {
      border-color: var(--c-terracotta);
    }
    .data-table-wrap {
      overflow-x: auto;
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
    }
    .matrix-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13px;
      margin: 0;
    }
    .matrix-table th {
      background-color: #F8F7F4;
      padding: 14px 16px;
      font-weight: 700;
      color: var(--c-slate-dark);
      border-bottom: 1px solid var(--c-sand-border);
      text-align: left;
      white-space: nowrap;
    }
    .matrix-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--c-sand-border);
      color: var(--c-text-main);
      vertical-align: middle;
    }
    .matrix-table tr:last-child td {
      border-bottom: none;
    }
    .status-tag {
      display: inline-block;
      padding: 2px 8px;
      font-size: 11px;
      font-weight: 600;
      border-radius: 2px;
    }
    .status-tag.active {
      background-color: #E8F5E9;
      color: #2E7D32;
    }
    .status-tag.standby {
      background-color: #FFF3E0;
      color: #E65100;
    }
    /* Section 4: Featured Deep Dives */
    .wide-feat-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
      transition: all .3s ease;
      margin-bottom: 24px;
    }
    .wide-feat-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: #D3CDC2;
    }
    .wide-card-inner {
      display: flex;
      flex-direction: row;
    }
    .wide-card-img {
      width: 38%;
      min-height: 240px;
      position: relative;
    }
    .wide-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .wide-card-content {
      width: 62%;
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .wide-card-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 12px;
      line-height: 1.35;
    }
    .wide-card-desc {
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .wide-meta-bar {
      display: flex;
      gap: 20px;
      font-size: 12px;
      color: var(--c-text-light);
      border-top: 1px solid var(--c-sand-border);
      padding-top: 14px;
    }
    /* Section 5: Architecture Guidance */
    .guidance-sec {
      background-color: #FAF9F6;
    }
    .guide-box {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      padding: 32px;
      border-radius: var(--radius-sm);
      height: 100%;
    }
    .guide-box h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .guide-box h4::before {
      content: "";
      width: 8px;
      height: 8px;
      background-color: var(--c-terracotta);
      border-radius: 50%;
      display: inline-block;
    }
    .guide-box p {
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.8;
      margin-bottom: 14px;
    }
    .guide-list {
      list-style: none;
      padding: 0;
      margin: 0;
      font-size: 13px;
      color: var(--c-text-main);
    }
    .guide-list li {
      padding: 8px 0;
      border-bottom: 1px dashed var(--c-sand-border);
      display: flex;
      justify-content: space-between;
    }
    .guide-list li:last-child {
      border-bottom: none;
    }
    /* Section 6: FAQ Accordion */
    .faq-item {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color .2s ease;
    }
    .faq-item:hover {
      border-color: #D3CDC2;
    }
    .faq-q {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--c-slate-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-q::after {
      content: "+";
      font-size: 20px;
      color: var(--c-terracotta);
      font-weight: 400;
      transition: transform .25s ease;
    }
    .faq-item.active .faq-q::after {
      content: "−";
    }
    .faq-a {
      padding: 0 24px 22px;
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.85;
      display: none;
      border-top: 1px solid #F0EEE9;
      padding-top: 18px;
    }
    .faq-item.active .faq-a {
      display: block;
    }
    /* Section 7: Internal Links Cluster */
    .cluster-sec {
      background-color: #EFECE6;
      padding: 48px 0;
    }
    .cluster-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .cluster-link-card {
      background: #FFF;
      border: 1px solid var(--c-sand-border);
      border-radius: var(--radius-sm);
      padding: 16px 18px;
      display: block;
      transition: all .25s ease;
    }
    .cluster-link-card:hover {
      border-color: var(--c-terracotta);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0,0,0,0.04);
    }
    .cluster-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--c-slate-dark);
      margin-bottom: 4px;
    }
    .cluster-sub {
      font-size: 12px;
      color: var(--c-text-light);
    }
    /* Footer */
    .site-footer {
      background-color: var(--c-slate-deep);
      color: #A5ACB8;
      padding: 72px 0 36px;
      border-top: 1px solid #2B303A;
      font-size: 14px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.8;
      color: #8E95A0;
      margin: 0;
    }
    .brand-text {
      font-size: 18px;
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    .footer-title {
      font-size: 14px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 18px;
      letter-spacing: 0.04em;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #8E95A0;
      font-size: 13px;
      transition: color .2s ease;
    }
    .footer-links a:hover {
      color: #FFF;
    }
    .footer-bottom {
      margin-top: 48px;
      padding-top: 24px;
      border-top: 1px solid #282D36;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #656D7A;
      flex-wrap: wrap;
      gap: 12px;
    }
    /* Responsive Breakpoints */
    @media screen and (max-width: 1024px) {
      .nav-links {
        gap: 18px;
      }
      .wide-card-img {
        width: 45%;
      }
      .wide-card-content {
        width: 55%;
      }
      .cluster-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media screen and (max-width: 768px) {
      .top-info-bar {
        display: none;
      }
      .site-header {
        height: auto;
        padding: 14px 0;
      }
      .nav-inner {
        flex-direction: column;
        gap: 16px;
      }
      .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px 20px;
      }
      .header-actions {
        width: 100%;
        justify-content: center;
      }
      .cat-h1 {
        font-size: 24px;
      }
      .wide-card-inner {
        flex-direction: column;
      }
      .wide-card-img {
        width: 100%;
        height: 200px;
      }
      .wide-card-content {
        width: 100%;
        padding: 20px;
      }
      .cluster-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }