/* roulang page: index */
:root {
      --primary-deep: #1e40af;
      --primary-base: #1d4ed8;
      --primary-light: #2563eb;
      --accent-cyan: #0ea5e9;
      --status-green: #10b981;
      --bg-light: #f8fafc;
      --bg-alt: #f1f5f9;
      --card-bg: #ffffff;
      --text-heading: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --card-radius: 14px;
      --card-shadow: 0 10px 25px -5px rgba(30, 64, 175, 0.07), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --card-shadow-hover: 0 18px 30px -4px rgba(29, 78, 216, 0.14), 0 10px 14px -6px rgba(15, 23, 42, 0.06);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1030;
      box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
    }

    .header-top-row {
      padding: 0.85rem 0;
      border-bottom: 1px solid #edf2f7;
    }

    .brand-logo-text {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-deep);
      letter-spacing: -0.02em;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .brand-badge {
      background: rgba(16, 185, 129, 0.12);
      color: var(--status-green);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.2rem 0.6rem;
      border-radius: 20px;
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--status-green);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
    }

    .header-search {
      max-width: 320px;
      position: relative;
    }

    .header-search input {
      border-radius: 20px;
      font-size: 0.85rem;
      padding-left: 2.2rem;
      border: 1px solid var(--border-color);
      background-color: #f8fafc;
    }

    .header-search i {
      position: absolute;
      left: 0.85rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .nav-grid-bar {
      padding: 0.5rem 0;
      background: #ffffff;
    }

    .nav-grid-list {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin: 0;
      padding: 0;
      list-style: none;
      overflow-x: auto;
      white-space: nowrap;
    }

    .nav-grid-item a {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.45rem 0.95rem;
      border-radius: 8px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-body);
      transition: all 0.2s ease;
    }

    .nav-grid-item a:hover {
      background: var(--bg-alt);
      color: var(--primary-base);
    }

    .nav-grid-item.active a {
      background: rgba(29, 78, 216, 0.08);
      color: var(--primary-base);
      font-weight: 700;
    }

    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #f0f7ff 0%, #e0edfd 100%);
      padding: 5rem 0 4.5rem;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-wave-bg {
      position: absolute;
      inset: 0;
      opacity: 0.08;
      pointer-events: none;
      background-image: radial-gradient(#1e40af 1px, transparent 1px);
      background-size: 24px 24px;
    }

    .hero-card {
      background: #ffffff;
      border-radius: var(--card-radius);
      padding: 2.2rem;
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--card-shadow);
    }

    .btn-brand-primary {
      background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary-base) 100%);
      color: #ffffff;
      border: none;
      border-radius: 10px;
      padding: 0.75rem 1.6rem;
      font-weight: 600;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
    }

    .btn-brand-primary:hover {
      background: linear-gradient(180deg, var(--primary-base) 0%, var(--primary-deep) 100%);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(29, 78, 216, 0.35);
    }

    .btn-brand-soft {
      background: rgba(29, 78, 216, 0.08);
      color: var(--primary-base);
      border: 1px solid rgba(29, 78, 216, 0.2);
      border-radius: 10px;
      padding: 0.75rem 1.5rem;
      font-weight: 600;
      font-size: 0.95rem;
      transition: all 0.25s ease;
    }

    .btn-brand-soft:hover {
      background: rgba(29, 78, 216, 0.15);
      color: var(--primary-deep);
      border-color: rgba(29, 78, 216, 0.4);
    }

    .section-spacing {
      padding: 4.8rem 0;
    }

    .section-title {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.01em;
      margin-bottom: 0.75rem;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 3rem;
      line-height: 1.7;
    }

    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2rem;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: #cbd5e1;
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(29, 78, 216, 0.08);
      color: var(--primary-base);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.2rem 1.5rem;
      text-align: center;
      box-shadow: var(--card-shadow);
    }

    .stat-number {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary-deep);
      line-height: 1.1;
      margin-bottom: 0.4rem;
    }

    .stat-label {
      color: var(--text-muted);
      font-size: 0.9rem;
      font-weight: 500;
    }

    .step-timeline-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 1.8rem;
      position: relative;
      height: 100%;
      box-shadow: var(--card-shadow);
    }

    .step-badge {
      display: inline-block;
      width: 34px;
      height: 34px;
      line-height: 34px;
      text-align: center;
      background: var(--primary-base);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      margin-bottom: 1rem;
    }

    .podcast-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .podcast-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
    }

    .podcast-thumb-wrap {
      position: relative;
      height: 200px;
      overflow: hidden;
      background-color: #0f172a;
    }

    .podcast-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }

    .podcast-card:hover .podcast-thumb-wrap img {
      transform: scale(1.05);
    }

    .badge-fader {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #ffffff;
      font-size: 0.72rem;
      padding: 0.25rem 0.65rem;
      border-radius: 6px;
      font-weight: 600;
    }

    .badge-bitrate {
      position: absolute;
      bottom: 12px;
      right: 12px;
      background: rgba(29, 78, 216, 0.9);
      color: #ffffff;
      font-size: 0.72rem;
      padding: 0.25rem 0.55rem;
      border-radius: 6px;
      font-weight: 600;
    }

    .podcast-body {
      padding: 1.4rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .fader-console {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.2rem;
      box-shadow: var(--card-shadow);
    }

    .meter-bar {
      height: 8px;
      border-radius: 4px;
      background: #e2e8f0;
      overflow: hidden;
      margin: 0.5rem 0 1.2rem;
    }

    .meter-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--status-green), var(--primary-light));
      border-radius: 4px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 1.6rem;
      box-shadow: var(--card-shadow);
      height: 100%;
      transition: all 0.25s ease;
    }

    .article-card:hover {
      transform: translateY(-3px);
      border-color: #cbd5e1;
    }

    .category-portal-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--card-radius);
      padding: 2.2rem;
      transition: all 0.25s ease;
      display: block;
      color: inherit;
    }

    .category-portal-card:hover {
      border-color: var(--primary-base);
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
    }

    .partner-logo-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 1.2rem;
      text-align: center;
      font-weight: 600;
      color: var(--text-muted);
      font-size: 0.9rem;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    .accordion-item {
      border: 1px solid var(--border-color);
      border-radius: 10px !important;
      margin-bottom: 0.8rem;
      overflow: hidden;
    }

    .accordion-button {
      font-weight: 600;
      color: var(--text-heading);
      background: #ffffff;
      box-shadow: none !important;
      padding: 1.2rem 1.4rem;
    }

    .accordion-button:not(.collapsed) {
      background: #f8fafc;
      color: var(--primary-base);
    }

    .accordion-body {
      color: var(--text-body);
      font-size: 0.95rem;
      line-height: 1.7;
      padding: 1.4rem;
      background: #ffffff;
    }

    .guarantee-bar {
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
      color: #ffffff;
      border-radius: var(--card-radius);
      padding: 2.8rem 2rem;
      box-shadow: 0 12px 30px rgba(30, 64, 175, 0.2);
    }

    .cta-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 3.5rem 2rem;
      box-shadow: var(--card-shadow-hover);
      text-align: center;
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 4rem 0 2rem;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .footer-heading {
      color: var(--text-heading);
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 1.2rem;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links li {
      margin-bottom: 0.6rem;
    }

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

    .wave-line-deco {
      width: 100%;
      height: 16px;
      opacity: 0.35;
      margin: 1.5rem 0;
    }

    @media (max-width: 768px) {
      .hero-section {
        padding: 3.5rem 0 3rem;
      }
      .section-spacing {
        padding: 3.2rem 0;
      }
      .stat-number {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.5rem;
      }
      .hero-card {
        padding: 1.5rem;
      }
    }

/* roulang page: category1 */
:root {
            --primary-deep: #1e40af;
            --primary-base: #1d4ed8;
            --primary-light: #2563eb;
            --accent-cyan: #0ea5e9;
            --status-green: #10b981;
            --bg-light: #f8fafc;
            --bg-alt: #f1f5f9;
            --card-bg: #ffffff;
            --text-heading: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --card-radius: 14px;
            --card-shadow: 0 10px 25px -5px rgba(30, 64, 175, 0.07), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --card-shadow-hover: 0 18px 30px -4px rgba(29, 78, 216, 0.14), 0 10px 14px -6px rgba(15, 23, 42, 0.06);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.65;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
        }

        .header-top-row {
            padding: 0.85rem 0;
            border-bottom: 1px solid #edf2f7;
        }

        .brand-logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-deep);
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .brand-badge {
            background: rgba(16, 185, 129, 0.12);
            color: var(--status-green);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--status-green);
            display: inline-block;
        }

        .header-search {
            max-width: 320px;
            position: relative;
        }

        .header-search input {
            border-radius: 20px;
            font-size: 0.85rem;
            padding-left: 2.2rem;
            border: 1px solid var(--border-color);
            background-color: #f8fafc;
        }

        .header-search i {
            position: absolute;
            left: 0.85rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .nav-grid-bar {
            padding: 0.5rem 0;
            background: #ffffff;
        }

        .nav-grid-list {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin: 0;
            padding: 0;
            list-style: none;
            overflow-x: auto;
            white-space: nowrap;
        }

        .nav-grid-item a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 0.95rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all 0.2s ease;
        }

        .nav-grid-item a:hover {
            background: var(--bg-alt);
            color: var(--primary-base);
        }

        .nav-grid-item.active a {
            background: rgba(29, 78, 216, 0.08);
            color: var(--primary-base);
            font-weight: 700;
        }

        /* Section Layouts */
        .category-hero {
            background: linear-gradient(135deg, #f0f7ff 0%, #e2eeff 100%);
            padding: 3.2rem 0 2.8rem;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(29, 78, 216, 0.06) 1px, transparent 1px);
            background-size: 20px 20px;
            pointer-events: none;
        }

        .breadcrumb-item a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

        .breadcrumb-item a:hover {
            color: var(--primary-base);
        }

        .breadcrumb-item.active {
            color: var(--primary-deep);
            font-weight: 600;
        }

        .filter-chip-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }

        .filter-chip {
            padding: 0.4rem 0.9rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: #ffffff;
            border: 1px solid var(--border-color);
            color: var(--text-body);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .filter-chip:hover, .filter-chip.active {
            background: var(--primary-base);
            color: #ffffff;
            border-color: var(--primary-base);
            box-shadow: 0 4px 10px rgba(29, 78, 216, 0.2);
        }

        .section-padding {
            padding: 4rem 0;
        }

        .section-heading-sm {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.01em;
            margin-bottom: 0.5rem;
        }

        .section-desc-sm {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        /* Dimension Nav Cards */
        .dimension-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1.25rem;
            transition: all 0.2s ease;
            height: 100%;
        }

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

        .dimension-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .dimension-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .dimension-tag {
            font-size: 0.8rem;
            padding: 0.2rem 0.6rem;
            background: var(--bg-alt);
            border-radius: 6px;
            color: var(--text-body);
            transition: background 0.2s;
        }

        .dimension-tag:hover {
            background: rgba(29, 78, 216, 0.1);
            color: var(--primary-base);
        }

        /* Episode / Stream Card */
        .stream-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            transition: all 0.25s ease;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        .stream-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: #cbd5e1;
        }

        .stream-cover-wrap {
            position: relative;
            min-height: 180px;
            height: 100%;
            background: #e2e8f0;
            overflow: hidden;
        }

        .stream-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .stream-card:hover .stream-cover-wrap img {
            transform: scale(1.04);
        }

        .badge-pill-tech {
            font-size: 0.75rem;
            padding: 0.25rem 0.6rem;
            border-radius: 20px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .badge-bitrate {
            background: rgba(14, 165, 233, 0.12);
            color: #0284c7;
        }

        .badge-latency {
            background: rgba(16, 185, 129, 0.12);
            color: #059669;
        }

        .badge-line {
            background: rgba(29, 78, 216, 0.08);
            color: var(--primary-base);
        }

        .stream-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .stream-meta-row {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px dashed var(--border-color);
        }

        /* Performance Metric Column */
        .metric-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--card-radius);
            padding: 1.8rem;
            box-shadow: var(--card-shadow);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-base), var(--accent-cyan));
        }

        .metric-icon {
            font-size: 2rem;
            color: var(--primary-base);
            margin-bottom: 1rem;
        }

        .metric-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 0.25rem;
        }

        /* Topic Card */
        .topic-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1.5rem;
            transition: all 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary-base);
            box-shadow: var(--card-shadow);
        }

        .topic-badge {
            align-self: flex-start;
            font-size: 0.75rem;
            background: rgba(29, 78, 216, 0.08);
            color: var(--primary-base);
            font-weight: 600;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            margin-bottom: 0.8rem;
        }

        /* Accordion Style */
        .custom-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: 12px !important;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: 0 2px 6px rgba(15, 23, 42, 0.03);
        }

        .custom-accordion .accordion-button {
            font-weight: 700;
            color: var(--text-heading);
            padding: 1.2rem 1.4rem;
            background-color: #ffffff;
            box-shadow: none;
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--primary-base);
            background-color: rgba(29, 78, 216, 0.03);
        }

        .custom-accordion .accordion-body {
            color: var(--text-body);
            padding: 1.2rem 1.4rem;
            line-height: 1.8;
            font-size: 0.95rem;
            background: #ffffff;
        }

        /* Bottom Action Strip */
        .action-strip-section {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-base) 100%);
            border-radius: var(--card-radius);
            padding: 3rem 2.5rem;
            color: #ffffff;
            box-shadow: 0 15px 35px -5px rgba(29, 78, 216, 0.35);
        }

        .action-strip-section h2 {
            font-size: 1.85rem;
            font-weight: 800;
            margin-bottom: 0.6rem;
            color: #ffffff;
        }

        .btn-brand-primary {
            background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary-base) 100%);
            color: #ffffff;
            border: none;
            border-radius: 10px;
            padding: 0.75rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .btn-brand-primary:hover {
            background: linear-gradient(180deg, var(--primary-base) 0%, var(--primary-deep) 100%);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(29, 78, 216, 0.35);
        }

        .btn-action-light {
            background: #ffffff;
            color: var(--primary-deep);
            border: none;
            border-radius: 10px;
            padding: 0.75rem 1.8rem;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .btn-action-light:hover {
            background: #f8fafc;
            color: var(--primary-base);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
        }

        /* Footer */
        .site-footer {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            padding: 4.5rem 0 2.5rem;
            margin-top: 5rem;
        }

        .footer-heading {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.65rem;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

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

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}