/* roulang page: index */
:root {
            --bg-base: #0D0F12;
            --bg-card: #16191E;
            --bg-elevated: #1C2026;
            --brand-primary: #FF5500;
            --brand-primary-hover: #E04B00;
            --brand-gold: #E5A93C;
            --brand-cyan: #4DEEEA;
            --text-main: #FFFFFF;
            --text-muted: #D1D5DB;
            --text-dim: #7B828E;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-active: rgba(255, 85, 0, 0.4);
            --radius-main: 4px;
            --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-muted);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            margin: 0;
            padding: 0;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* 顶部活动时间线导航 */
        .fixed-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            background: rgba(13, 15, 18, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-dim);
            padding: 12px 0;
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            text-decoration: none;
            font-weight: 800;
            font-size: 1.18rem;
            letter-spacing: -0.5px;
        }

        .navbar-brand-custom .brand-badge {
            background: var(--brand-primary);
            color: #fff;
            font-size: 0.7rem;
            padding: 2px 6px;
            border-radius: var(--radius-main);
            font-family: monospace;
            font-weight: 700;
        }

        .nav-link-custom {
            color: var(--text-muted);
            text-decoration: none;
            padding: 6px 14px;
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-smooth);
            border-radius: var(--radius-main);
        }

        .nav-link-custom:hover, .nav-link-custom.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .timeline-chip {
            font-size: 0.68rem;
            padding: 2px 6px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-family: monospace;
            line-height: 1;
        }
        .chip-ongoing {
            background: rgba(255, 85, 0, 0.15);
            color: var(--brand-primary);
            border: 1px solid rgba(255, 85, 0, 0.35);
        }
        .chip-warmup {
            background: rgba(229, 169, 60, 0.15);
            color: var(--brand-gold);
            border: 1px solid rgba(229, 169, 60, 0.35);
        }
        .chip-playback {
            background: rgba(77, 238, 234, 0.15);
            color: var(--brand-cyan);
            border: 1px solid rgba(77, 238, 234, 0.35);
        }

        .pulse-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: currentColor;
            animation: pulseAnim 1.6s infinite ease-in-out;
        }

        @keyframes pulseAnim {
            0% { transform: scale(0.9); opacity: 0.5; }
            50% { transform: scale(1.3); opacity: 1; }
            100% { transform: scale(0.9); opacity: 0.5; }
        }

        .hud-status-indicator {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--brand-cyan);
            font-family: monospace;
            border: 1px solid rgba(77, 238, 234, 0.2);
            padding: 4px 8px;
            border-radius: var(--radius-main);
            background: rgba(77, 238, 234, 0.03);
        }

        .btn-brand-primary {
            background: var(--brand-primary);
            color: #fff;
            border: 1px solid var(--brand-primary);
            padding: 8px 18px;
            font-weight: 700;
            border-radius: var(--radius-main);
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }

        .btn-brand-primary:hover {
            background: var(--brand-primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
        }

        .btn-brand-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 18px;
            font-weight: 600;
            border-radius: var(--radius-main);
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }

        .btn-brand-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-2px);
        }

        /* 统一卡片与容器 */
        .industrial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-main);
            padding: 24px;
            transition: var(--transition-smooth);
            position: relative;
            height: 100%;
        }

        .industrial-card:hover {
            border-color: var(--border-active);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }

        .hud-corner {
            position: absolute;
            width: 6px;
            height: 6px;
            border-color: rgba(255, 255, 255, 0.3);
            pointer-events: none;
        }
        .corner-tl { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
        .corner-tr { top: -1px; right: -1px; border-top: 1px solid; border-right: 1px solid; }
        .corner-bl { bottom: -1px; left: -1px; border-bottom: 1px solid; border-left: 1px solid; }
        .corner-br { bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }

        .section-padding {
            padding: 80px 0;
            position: relative;
        }

        .section-header-badge {
            font-family: monospace;
            font-size: 0.76rem;
            color: var(--brand-primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
            display: inline-block;
            background: rgba(255, 85, 0, 0.08);
            border: 1px solid rgba(255, 85, 0, 0.2);
            padding: 2px 10px;
            border-radius: 2px;
        }

        .section-title {
            color: var(--text-main);
            font-weight: 800;
            font-size: 2rem;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 820px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        /* Hero 区块：前后对比首屏 */
        .hero-section {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 50% 20%, rgba(255, 85, 0, 0.06), transparent 70%), var(--bg-base);
            border-bottom: 1px solid var(--border-dim);
        }

        .hero-h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.18;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-h1 span.highlight {
            color: var(--brand-primary);
        }

        .hero-intro {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 30px;
        }

        .comparison-stage {
            background: var(--bg-card);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-main);
            overflow: hidden;
        }

        .comparison-half {
            padding: 24px;
        }

        .comparison-half.before {
            background: rgba(0, 0, 0, 0.3);
            border-right: 1px solid var(--border-dim);
        }

        .comparison-half.after {
            background: rgba(255, 85, 0, 0.02);
        }

        /* KPI 看板 */
        .kpi-number {
            font-family: monospace;
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .kpi-unit {
            font-size: 1rem;
            color: var(--text-dim);
            margin-left: 4px;
        }

        /* 时间线步进器 */
        .timeline-step-box {
            position: relative;
            padding-left: 36px;
            margin-bottom: 32px;
            border-left: 2px solid var(--border-dim);
        }

        .timeline-step-box:last-child {
            margin-bottom: 0;
            border-left-color: transparent;
        }

        .timeline-step-marker {
            position: absolute;
            left: -8px;
            top: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--bg-base);
            border: 2px solid var(--brand-primary);
        }

        /* 纯 CSS 性能柱状条 */
        .bar-container {
            background: rgba(255, 255, 255, 0.05);
            height: 10px;
            border-radius: 2px;
            overflow: hidden;
            margin-top: 8px;
        }

        .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-gold));
        }

        /* 手风琴 FAQ */
        .accordion-item-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-main);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-button-custom {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-main);
            padding: 18px 24px;
            text-align: left;
            font-weight: 700;
            font-size: 1.02rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .accordion-button-custom:focus {
            outline: none;
        }

        .accordion-content-custom {
            padding: 0 24px 20px 24px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 全局页脚 */
        .site-footer {
            background: #080A0C;
            border-top: 1px solid var(--border-dim);
            padding: 60px 0 30px;
            color: var(--text-dim);
            font-size: 0.9rem;
        }

        .footer-col-title {
            color: var(--text-main);
            font-weight: 700;
            font-size: 0.98rem;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-links a {
            color: var(--text-dim);
            text-decoration: none;
            transition: var(--transition-smooth);
        }

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

        /* 响应式调整 */
        @media (max-width: 991px) {
            .hero-h1 { font-size: 2.2rem; }
            .comparison-half.before { border-right: none; border-bottom: 1px solid var(--border-dim); }
        }
        @media (max-width: 576px) {
            .hero-h1 { font-size: 1.85rem; }
            .section-title { font-size: 1.55rem; }
            .kpi-number { font-size: 2rem; }
        }

/* roulang page: category1 */
:root {
      --bg-base: #0D0F12;
      --bg-card: #16191E;
      --bg-elevated: #1C2026;
      --brand-primary: #FF5500;
      --brand-primary-hover: #E04B00;
      --brand-gold: #E5A93C;
      --brand-cyan: #4DEEEA;
      --text-main: #FFFFFF;
      --text-muted: #D1D5DB;
      --text-dim: #7B828E;
      --border-dim: rgba(255, 255, 255, 0.08);
      --border-active: rgba(255, 85, 0, 0.4);
      --radius-main: 4px;
      --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    body {
      background-color: var(--bg-base);
      color: var(--text-muted);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      margin: 0;
      padding: 0;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    /* 顶部活动时间线导航 */
    .fixed-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1030;
      background: rgba(13, 15, 18, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dim);
      padding: 12px 0;
    }
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 800;
      font-size: 1.18rem;
      letter-spacing: -0.5px;
    }
    .navbar-brand-custom .brand-badge {
      background: var(--brand-primary);
      color: #fff;
      font-size: 0.7rem;
      padding: 2px 6px;
      border-radius: var(--radius-main);
      font-family: monospace;
      font-weight: 700;
    }
    .nav-link-custom {
      color: var(--text-muted);
      text-decoration: none;
      padding: 6px 14px;
      font-size: 0.92rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition-smooth);
      border-radius: var(--radius-main);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: #fff;
      background: rgba(255, 255, 255, 0.05);
    }
    .timeline-chip {
      font-size: 0.68rem;
      padding: 2px 6px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-family: monospace;
      line-height: 1;
    }
    .chip-ongoing {
      background: rgba(255, 85, 0, 0.15);
      color: var(--brand-primary);
      border: 1px solid rgba(255, 85, 0, 0.35);
    }
    .chip-warmup {
      background: rgba(229, 169, 60, 0.15);
      color: var(--brand-gold);
      border: 1px solid rgba(229, 169, 60, 0.35);
    }
    .chip-playback {
      background: rgba(77, 238, 234, 0.15);
      color: var(--brand-cyan);
      border: 1px solid rgba(77, 238, 234, 0.35);
    }
    .pulse-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: currentColor;
      display: inline-block;
      animation: pulseAnim 1.6s infinite ease-in-out;
    }
    @keyframes pulseAnim {
      0%, 100% { opacity: 0.3; transform: scale(0.85); }
      50% { opacity: 1; transform: scale(1.15); }
    }
    .hud-status-indicator {
      font-size: 0.78rem;
      font-family: monospace;
      color: var(--brand-cyan);
      background: rgba(77, 238, 234, 0.08);
      border: 1px solid rgba(77, 238, 234, 0.25);
      padding: 5px 10px;
      border-radius: var(--radius-main);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .btn-brand-primary {
      background: var(--brand-primary);
      color: #fff;
      border: 1px solid var(--brand-primary);
      padding: 8px 18px;
      font-weight: 700;
      border-radius: var(--radius-main);
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
    }
    .btn-brand-primary:hover {
      background: var(--brand-primary-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
    }
    .btn-brand-outline {
      background: transparent;
      color: var(--text-main);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 8px 18px;
      font-weight: 600;
      border-radius: var(--radius-main);
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
    }
    .btn-brand-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.4);
      transform: translateY(-2px);
    }

    /* 统一卡片与容器 */
    .industrial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 24px;
      transition: var(--transition-smooth);
      position: relative;
      height: 100%;
    }
    .industrial-card:hover {
      border-color: var(--border-active);
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    }
    .section-padding {
      padding: 70px 0;
      position: relative;
    }
    .section-header-badge {
      font-family: monospace;
      font-size: 0.76rem;
      color: var(--brand-primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 10px;
      display: inline-block;
      background: rgba(255, 85, 0, 0.08);
      border: 1px solid rgba(255, 85, 0, 0.2);
      padding: 2px 10px;
      border-radius: 2px;
    }
    .section-title {
      color: var(--text-main);
      font-weight: 800;
      font-size: 1.85rem;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 0.98rem;
      max-width: 820px;
      margin-bottom: 36px;
      line-height: 1.7;
    }

    /* 分类页控制台首屏 */
    .category-console-header {
      padding-top: 130px;
      padding-bottom: 50px;
      background: linear-gradient(180deg, rgba(22, 25, 30, 0.9) 0%, rgba(13, 15, 18, 1) 100%);
      border-bottom: 1px solid var(--border-dim);
    }
    .console-h1 {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.2;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .status-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-family: monospace;
      font-size: 0.78rem;
      padding: 3px 8px;
      border-radius: 2px;
      background: rgba(229, 169, 60, 0.12);
      border: 1px solid rgba(229, 169, 60, 0.3);
      color: var(--brand-gold);
    }
    .hud-grid-specs {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      gap: 12px;
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      padding: 16px;
      border-radius: var(--radius-main);
    }
    .hud-spec-item .label {
      font-size: 0.72rem;
      color: var(--text-dim);
      font-family: monospace;
      text-transform: uppercase;
    }
    .hud-spec-item .val {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      font-family: monospace;
    }

    /* 筛选条 */
    .filter-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      padding: 18px 24px;
      border-radius: var(--radius-main);
    }
    .filter-chip-btn {
      background: var(--bg-elevated);
      color: var(--text-muted);
      border: 1px solid var(--border-dim);
      padding: 6px 14px;
      font-size: 0.84rem;
      border-radius: 3px;
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .filter-chip-btn:hover, .filter-chip-btn.active {
      color: #fff;
      border-color: var(--brand-primary);
      background: rgba(255, 85, 0, 0.12);
    }
    .select-industrial {
      background: var(--bg-elevated);
      border: 1px solid var(--border-dim);
      color: var(--text-muted);
      padding: 6px 12px;
      font-size: 0.85rem;
      border-radius: 3px;
      outline: none;
    }
    .select-industrial:focus {
      border-color: var(--brand-primary);
      color: #fff;
    }

    /* 瀑布流卡片 */
    .spec-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 24px;
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
      transition: var(--transition-smooth);
    }
    .spec-card:hover {
      border-color: var(--border-active);
      transform: translateY(-3px);
    }
    .spec-tag {
      font-size: 0.72rem;
      font-family: monospace;
      padding: 2px 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-dim);
      color: var(--brand-cyan);
      border-radius: 2px;
    }
    .spec-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin: 10px 0 14px 0;
    }
    .spec-grid-mini {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin: 14px 0;
      background: var(--bg-elevated);
      padding: 12px;
      border-radius: 2px;
    }
    .spec-grid-mini .s-item {
      font-size: 0.8rem;
    }
    .spec-grid-mini .s-label {
      color: var(--text-dim);
      display: block;
      font-size: 0.72rem;
    }
    .spec-grid-mini .s-val {
      color: #fff;
      font-weight: 700;
      font-family: monospace;
    }

    /* 纯CSS压力测试柱状看板 */
    .stress-chart-block {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 28px;
    }
    .stress-row {
      margin-bottom: 22px;
    }
    .stress-label-wrap {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      margin-bottom: 6px;
    }
    .stress-track {
      height: 10px;
      background: var(--bg-elevated);
      border-radius: 2px;
      overflow: hidden;
      position: relative;
    }
    .stress-fill {
      height: 100%;
      border-radius: 2px;
      transition: width 0.8s ease;
    }

    /* 折叠手风琴面板 */
    .custom-accordion .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      margin-bottom: 12px;
      border-radius: var(--radius-main) !important;
      overflow: hidden;
    }
    .custom-accordion .accordion-button {
      background: var(--bg-card);
      color: var(--text-main);
      font-weight: 700;
      box-shadow: none !important;
      padding: 18px 20px;
      border: none;
    }
    .custom-accordion .accordion-button:not(.collapsed) {
      color: var(--brand-primary);
      background: rgba(255, 85, 0, 0.05);
      border-bottom: 1px solid var(--border-dim);
    }
    .custom-accordion .accordion-button::after {
      filter: invert(1);
    }
    .custom-accordion .accordion-body {
      background: var(--bg-card);
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.8;
      padding: 20px;
    }

    /* 快速预约面板 */
    .cta-console-box {
      background: linear-gradient(135deg, rgba(28, 32, 38, 0.9), rgba(22, 25, 30, 0.95));
      border: 1px solid var(--border-active);
      border-radius: var(--radius-main);
      padding: 40px;
      position: relative;
    }

    /* 统一页脚 */
    .site-footer {
      background: #080A0C;
      border-top: 1px solid var(--border-dim);
      padding: 70px 0 30px 0;
    }
    .footer-logo {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .footer-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
      font-size: 0.88rem;
    }
    .footer-links a {
      color: var(--text-dim);
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    .footer-links a:hover {
      color: var(--brand-primary);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dim);
      padding-top: 24px;
      margin-top: 50px;
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    @media (max-width: 768px) {
      .section-padding { padding: 50px 0; }
      .category-console-header { padding-top: 110px; padding-bottom: 40px; }
      .console-h1 { font-size: 1.75rem; }
      .cta-console-box { padding: 24px; }
    }

/* roulang page: category2 */
:root {
      --bg-base: #0D0F12;
      --bg-card: #16191E;
      --bg-elevated: #1C2026;
      --brand-primary: #FF5500;
      --brand-primary-hover: #E04B00;
      --brand-gold: #E5A93C;
      --brand-cyan: #4DEEEA;
      --text-main: #FFFFFF;
      --text-muted: #D1D5DB;
      --text-dim: #7B828E;
      --border-dim: rgba(255, 255, 255, 0.08);
      --border-active: rgba(255, 85, 0, 0.4);
      --radius-main: 4px;
      --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-muted);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      margin: 0;
      padding: 0;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    /* 顶部导航 */
    .fixed-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1030;
      background: rgba(13, 15, 18, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dim);
      padding: 12px 0;
    }
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 800;
      font-size: 1.18rem;
      letter-spacing: -0.5px;
    }
    .navbar-brand-custom .brand-badge {
      background: var(--brand-primary);
      color: #fff;
      font-size: 0.7rem;
      padding: 2px 6px;
      border-radius: var(--radius-main);
      font-family: monospace;
      font-weight: 700;
    }
    .nav-link-custom {
      color: var(--text-muted);
      text-decoration: none;
      padding: 6px 14px;
      font-size: 0.92rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition-smooth);
      border-radius: var(--radius-main);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: #fff;
      background: rgba(255, 255, 255, 0.05);
    }
    .nav-link-custom.active {
      border-bottom: 2px solid var(--brand-primary);
    }
    .timeline-chip {
      font-size: 0.68rem;
      padding: 2px 6px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-family: monospace;
      line-height: 1;
    }
    .chip-ongoing {
      background: rgba(255, 85, 0, 0.15);
      color: var(--brand-primary);
      border: 1px solid rgba(255, 85, 0, 0.35);
    }
    .chip-warmup {
      background: rgba(229, 169, 60, 0.15);
      color: var(--brand-gold);
      border: 1px solid rgba(229, 169, 60, 0.35);
    }
    .chip-playback {
      background: rgba(77, 238, 234, 0.15);
      color: var(--brand-cyan);
      border: 1px solid rgba(77, 238, 234, 0.35);
    }
    .pulse-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      display: inline-block;
      animation: pulse-glow 1.8s infinite;
    }
    .chip-ongoing .pulse-dot { background-color: var(--brand-primary); }
    .chip-warmup .pulse-dot { background-color: var(--brand-gold); }
    .chip-playback .pulse-dot { background-color: var(--brand-cyan); }
    @keyframes pulse-glow {
      0% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.2); }
      100% { opacity: 0.4; transform: scale(0.9); }
    }
    .btn-brand-primary {
      background: var(--brand-primary);
      color: #fff;
      border: 1px solid var(--brand-primary);
      padding: 8px 18px;
      font-weight: 700;
      border-radius: var(--radius-main);
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
    }
    .btn-brand-primary:hover {
      background: var(--brand-primary-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
    }
    .hud-status-indicator {
      font-family: monospace;
      font-size: 0.78rem;
      color: var(--brand-cyan);
      background: rgba(77, 238, 234, 0.08);
      border: 1px solid rgba(77, 238, 234, 0.25);
      padding: 6px 12px;
      border-radius: var(--radius-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 基础组件与通用板块 */
    .section-padding {
      padding: 70px 0;
      position: relative;
    }
    .section-header-badge {
      font-family: monospace;
      font-size: 0.76rem;
      color: var(--brand-primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
      display: inline-block;
      background: rgba(255, 85, 0, 0.08);
      border: 1px solid rgba(255, 85, 0, 0.2);
      padding: 2px 10px;
      border-radius: 2px;
    }
    .section-title {
      color: var(--text-main);
      font-weight: 800;
      font-size: 1.95rem;
      line-height: 1.3;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 0.98rem;
      max-width: 820px;
      margin-bottom: 35px;
      line-height: 1.7;
    }
    .industrial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 24px;
      transition: var(--transition-smooth);
      position: relative;
      height: 100%;
    }
    .industrial-card:hover {
      border-color: var(--border-active);
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    }

    /* 1. 分类 H1 概览控制台 (下载站式搜索与控制台排版) */
    .cat2-hero-console {
      padding-top: 120px;
      padding-bottom: 50px;
      background: linear-gradient(180deg, rgba(22, 25, 30, 0.9) 0%, rgba(13, 15, 18, 1) 100%);
      border-bottom: 1px solid var(--border-dim);
      position: relative;
    }
    .console-hud-grid {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 32px 32px;
      pointer-events: none;
    }
    .console-title-wrap {
      position: relative;
      z-index: 2;
    }
    .console-h1 {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 15px;
    }
    .search-console-box {
      max-width: 680px;
      background: var(--bg-elevated);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-main);
      padding: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 25px;
      transition: var(--transition-smooth);
    }
    .search-console-box:focus-within {
      border-color: var(--brand-primary);
      box-shadow: 0 0 16px rgba(255, 85, 0, 0.25);
    }
    .search-console-input {
      background: transparent;
      border: none;
      color: #fff;
      padding: 8px 14px;
      width: 100%;
      outline: none;
      font-size: 0.95rem;
    }
    .search-console-input::placeholder {
      color: var(--text-dim);
    }
    .kpi-score-badge {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      padding: 12px 18px;
      border-radius: var(--radius-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .kpi-score-val {
      font-size: 1.6rem;
      font-weight: 800;
      font-family: monospace;
      color: var(--brand-primary);
      line-height: 1;
    }

    /* 2. 场景横向滚动切换条 */
    .scenario-filter-bar {
      display: flex;
      gap: 12px;
      overflow-x: auto;
      padding-bottom: 12px;
      scrollbar-width: thin;
    }
    .scenario-filter-bar::-webkit-scrollbar {
      height: 4px;
    }
    .scenario-filter-bar::-webkit-scrollbar-thumb {
      background: var(--brand-primary);
      border-radius: 2px;
    }
    .scenario-tab-item {
      background: var(--bg-elevated);
      border: 1px solid var(--border-dim);
      color: var(--text-muted);
      padding: 8px 18px;
      border-radius: var(--radius-main);
      white-space: nowrap;
      font-size: 0.88rem;
      cursor: pointer;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition-smooth);
    }
    .scenario-tab-item:hover, .scenario-tab-item.active {
      color: #fff;
      border-color: var(--brand-primary);
      background: rgba(255, 85, 0, 0.12);
    }

    /* 3. 应用方案库主体列表 */
    .scheme-badge-group {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 12px;
    }
    .scheme-badge {
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: 2px;
      font-family: monospace;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-dim);
      color: var(--text-dim);
    }
    .scheme-badge.accent {
      color: var(--brand-gold);
      border-color: rgba(229, 169, 60, 0.3);
      background: rgba(229, 169, 60, 0.06);
    }
    .scheme-param-list {
      background: rgba(0, 0, 0, 0.25);
      border: 1px solid var(--border-dim);
      border-radius: 2px;
      padding: 10px 14px;
      margin-top: 14px;
      margin-bottom: 14px;
      font-family: monospace;
      font-size: 0.82rem;
    }
    .scheme-param-item {
      display: flex;
      justify-content: space-between;
      margin-bottom: 4px;
    }
    .scheme-param-item:last-child {
      margin-bottom: 0;
    }

    /* 4. 对比看板 */
    .spec-table-container {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      overflow-x: auto;
    }
    .table-custom-dark {
      width: 100%;
      border-collapse: collapse;
      margin-bottom: 0;
      color: var(--text-muted);
      font-size: 0.92rem;
    }
    .table-custom-dark th, .table-custom-dark td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-dim);
      vertical-align: middle;
    }
    .table-custom-dark th {
      background: var(--bg-elevated);
      color: var(--text-main);
      font-weight: 700;
      font-size: 0.88rem;
      letter-spacing: 0.5px;
    }
    .table-custom-dark tr:last-child td {
      border-bottom: none;
    }
    .table-highlight-cell {
      color: var(--brand-primary);
      font-weight: 700;
      font-family: monospace;
    }

    /* 5. 部署执行交付时间线 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .flow-step-box {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 22px;
      position: relative;
    }
    .flow-step-box::after {
      content: '';
      position: absolute;
      top: 30px;
      right: -12px;
      width: 10px;
      height: 2px;
      background: var(--brand-primary);
      z-index: 2;
    }
    .flow-step-box:last-child::after {
      display: none;
    }
    .flow-step-num {
      font-family: monospace;
      font-size: 1.25rem;
      color: var(--brand-primary);
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* 6. 技术白皮书与文档索引 */
    .doc-index-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-main);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
      transition: var(--transition-smooth);
    }
    .doc-index-card:hover {
      border-color: var(--brand-gold);
      transform: translateY(-2px);
    }
    .doc-meta-badge {
      font-family: monospace;
      font-size: 0.72rem;
      background: rgba(77, 238, 234, 0.08);
      color: var(--brand-cyan);
      border: 1px solid rgba(77, 238, 234, 0.2);
      padding: 2px 6px;
      border-radius: 2px;
    }

    /* 7. 应急调优通道 */
    .emergency-alert-card {
      background: linear-gradient(135deg, rgba(255, 85, 0, 0.12) 0%, rgba(22, 25, 30, 0.95) 100%);
      border: 1px solid rgba(255, 85, 0, 0.4);
      border-radius: var(--radius-main);
      padding: 36px;
      position: relative;
      overflow: hidden;
    }
    .emergency-tag {
      background: var(--brand-primary);
      color: #fff;
      font-family: monospace;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      display: inline-block;
      margin-bottom: 14px;
      border-radius: 2px;
    }

    /* 页脚 */
    .site-footer {
      background: #090B0D;
      border-top: 1px solid var(--border-dim);
      padding: 65px 0 35px 0;
      color: var(--text-dim);
    }
    .footer-logo {
      font-size: 1.22rem;
      font-weight: 800;
      color: #fff;
    }
    .footer-title {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-dim);
      text-decoration: none;
      font-size: 0.88rem;
      transition: var(--transition-smooth);
    }
    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dim);
      padding-top: 25px;
      margin-top: 50px;
      font-size: 0.82rem;
    }

    /* 响应式微调 */
    @media (max-width: 991px) {
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-step-box::after {
        display: none;
      }
    }
    @media (max-width: 575px) {
      .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .console-h1 {
        font-size: 1.8rem;
      }
    }

/* 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}