/* roulang page: index */
:root {
            --bg-obsidian: #0B0E14;
            --bg-carbon: #121620;
            --bg-titanium: #1A202C;
            --bg-card: rgba(26, 32, 44, 0.72);
            --neon-green: #00FF88;
            --neon-green-dim: rgba(0, 255, 136, 0.15);
            --cyber-purple: #7928CA;
            --arc-blue: #0070F3;
            --danger-red: #FF3B5C;
            --warning-amber: #F5A623;
            --text-white: #F7FAFC;
            --text-silver: #A0AEC0;
            --text-slate: #718096;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-neon: rgba(0, 255, 136, 0.45);
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-glow: 0 12px 32px -8px rgba(0, 255, 136, 0.18);
            --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.65);
            --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-obsidian);
            color: var(--text-white);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-obsidian);
            color: var(--text-white);
            line-height: 1.65;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            background-image: 
                radial-gradient(rgba(0, 255, 136, 0.04) 1px, transparent 1px),
                radial-gradient(rgba(0, 112, 243, 0.03) 1px, var(--bg-obsidian) 1px);
            background-size: 36px 36px;
            background-position: 0 0, 18px 18px;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-white);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }

        a {
            color: var(--neon-green);
            text-decoration: none;
            transition: var(--transition-fast);
        }

        a:hover, a:focus {
            color: #52ffae;
        }

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

        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* 顶层状态与节点定位栏 */
        .topbar-status {
            background-color: #06080c;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 13px;
            padding: 8px 0;
            color: var(--text-silver);
            position: relative;
            z-index: 1001;
        }

        .status-indicator {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--neon-green);
            box-shadow: 0 0 10px var(--neon-green);
            animation: pulseDot 2s infinite;
        }

        @keyframes pulseDot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.45; transform: scale(1.2); }
        }

        .node-selector-wrap {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 18px;
            flex-wrap: wrap;
        }

        .node-switcher {
            display: inline-flex;
            align-items: center;
            background: var(--bg-carbon);
            border: 1px solid var(--border-subtle);
            border-radius: 6px;
            padding: 3px 10px;
            gap: 6px;
            color: var(--text-white);
            font-size: 12px;
        }

        .node-switcher i {
            color: var(--neon-green);
        }

        .node-switcher select {
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 12px;
            margin: 0;
            padding: 0 18px 0 4px;
            height: auto;
            cursor: pointer;
            width: auto;
        }

        .node-switcher select:focus {
            outline: none;
            box-shadow: none;
        }

        .node-switcher select option {
            background: var(--bg-carbon);
            color: var(--text-white);
        }

        /* 主导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-fast);
        }

        .site-header.scrolled {
            background: rgba(11, 14, 20, 0.95);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
            border-bottom-color: rgba(0, 255, 136, 0.2);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 16px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-white) !important;
            letter-spacing: -0.01em;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--neon-green), var(--arc-blue));
            color: #06080c;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            box-shadow: 0 0 16px rgba(0, 255, 136, 0.35);
        }

        .brand-tag {
            font-size: 11px;
            background: rgba(0, 255, 136, 0.12);
            color: var(--neon-green);
            border: 1px solid rgba(0, 255, 136, 0.3);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            margin-left: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            display: inline-block;
            padding: 8px 12px;
            color: var(--text-silver);
            font-size: 14px;
            font-weight: 500;
            border-radius: 6px;
            transition: var(--transition-fast);
        }

        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--neon-green);
            background: rgba(0, 255, 136, 0.08);
        }

        /* 按钮体系 */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--neon-green);
            color: #070A0E !important;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--neon-green);
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 4px 18px rgba(0, 255, 136, 0.25);
        }

        .btn-neon:hover {
            background: #2bff9c;
            box-shadow: 0 0 25px rgba(0, 255, 136, 0.55);
            transform: translateY(-1px);
        }

        .btn-neon:active {
            transform: scale(0.98);
        }

        .btn-outline-cyber {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(26, 32, 44, 0.6);
            color: var(--text-white) !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.18);
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .btn-outline-cyber:hover {
            border-color: var(--neon-green);
            color: var(--neon-green) !important;
            background: rgba(0, 255, 136, 0.06);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .mobile-menu-btn {
            display: none;
            background: var(--bg-titanium);
            border: 1px solid var(--border-subtle);
            color: var(--text-white);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 16px;
            cursor: pointer;
        }

        /* 通用板块样式 */
        .section-block {
            padding: 84px 0;
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .section-deep {
            background: linear-gradient(180deg, #090C11 0%, #121723 100%);
        }

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

        .eyebrow-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--neon-green);
            background: rgba(0, 255, 136, 0.1);
            border: 1px solid rgba(0, 255, 136, 0.28);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(24px, 3.2vw, 36px);
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--text-silver);
            font-size: 16px;
            max-width: 780px;
            margin-bottom: 0;
        }

        /* 板块1：Before/After 前后对比首屏 Hero */
        .hero-section {
            position: relative;
            padding: 64px 0 80px;
            background: 
                linear-gradient(135deg, rgba(11, 14, 20, 0.92) 0%, rgba(18, 22, 32, 0.86) 60%, rgba(11, 14, 20, 0.95) 100%),
                url('/assets/images/b7d006210191f31b.webp') center/cover no-repeat;
            border-bottom: 1px solid rgba(0, 255, 136, 0.22);
        }

        .hero-top-intro {
            max-width: 900px;
            margin: 0 auto 42px;
            text-align: center;
        }

        .hero-h1 {
            font-size: clamp(28px, 4.2vw, 48px);
            font-weight: 900;
            margin-bottom: 18px;
            line-height: 1.18;
        }

        .hero-h1 .highlight {
            background: linear-gradient(90deg, var(--neon-green), #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            color: var(--text-silver);
            font-size: 16px;
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .hero-meta-strip {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-slate);
        }

        .hero-meta-strip span i {
            color: var(--neon-green);
            margin-right: 5px;
        }

        /* Before / After 并置舞台 */
        .ba-comparison-stage {
            background: rgba(15, 19, 28, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75);
        }

        .ba-panel {
            border-radius: var(--radius-md);
            padding: 22px;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .ba-panel-before {
            background: linear-gradient(160deg, rgba(255, 59, 92, 0.09) 0%, rgba(18, 22, 32, 0.95) 100%);
            border: 1px solid rgba(255, 59, 92, 0.35);
        }

        .ba-panel-after {
            background: linear-gradient(160deg, rgba(0, 255, 136, 0.11) 0%, rgba(18, 22, 32, 0.95) 100%);
            border: 1px solid rgba(0, 255, 136, 0.45);
            box-shadow: inset 0 0 28px rgba(0, 255, 136, 0.06);
        }

        .ba-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .ba-tag-bad {
            background: rgba(255, 59, 92, 0.18);
            color: #ff6b84;
            border: 1px solid rgba(255, 59, 92, 0.4);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 4px;
        }

        .ba-tag-good {
            background: rgba(0, 255, 136, 0.16);
            color: var(--neon-green);
            border: 1px solid rgba(0, 255, 136, 0.45);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 4px;
        }

        .ba-visual-box {
            position: relative;
            border-radius: 6px;
            overflow: hidden;
            margin-bottom: 16px;
            border: 1px solid var(--border-subtle);
            aspect-ratio: 16 / 9;
        }

        .ba-visual-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .ba-overlay-hud {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(6, 8, 12, 0.86);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 8px 12px;
            border-radius: 6px;
            font-family: "Consolas", "Monaco", monospace;
            font-size: 12px;
            line-height: 1.4;
        }

        .ba-metrics-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .ba-metrics-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.07);
            font-size: 13px;
            color: var(--text-silver);
        }

        .ba-metrics-list li:last-child {
            border-bottom: none;
        }

        .val-bad {
            color: #ff6b84;
            font-weight: 700;
            font-family: monospace;
        }

        .val-good {
            color: var(--neon-green);
            font-weight: 700;
            font-family: monospace;
        }

        /* 工业风卡片通用 */
        .cyber-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 26px;
            height: 100%;
            transition: var(--transition-fast);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cyber-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .card-micro-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(0, 112, 243, 0.16);
            color: #60a5fa;
            border: 1px solid rgba(0, 112, 243, 0.35);
            margin-bottom: 14px;
        }

        .card-micro-badge.green {
            background: rgba(0, 255, 136, 0.12);
            color: var(--neon-green);
            border-color: rgba(0, 255, 136, 0.32);
        }

        .card-micro-badge.purple {
            background: rgba(121, 40, 202, 0.2);
            color: #c084fc;
            border-color: rgba(121, 40, 202, 0.45);
        }

        .icon-box-neon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            background: rgba(0, 255, 136, 0.1);
            border: 1px solid rgba(0, 255, 136, 0.3);
            color: var(--neon-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        /* 板块2：系统架构图解 */
        .arch-diagram-box {
            background: #0d111a;
            border: 1px solid rgba(0, 255, 136, 0.28);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .arch-layer {
            background: rgba(26, 32, 44, 0.85);
            border: 1px solid var(--border-subtle);
            border-left: 4px solid var(--neon-green);
            border-radius: 6px;
            padding: 14px 18px;
            margin-bottom: 14px;
        }

        .arch-layer.layer-blue {
            border-left-color: var(--arc-blue);
        }

        .arch-layer.layer-purple {
            border-left-color: var(--cyber-purple);
        }

        .arch-layer-title {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .arch-layer-sub {
            font-size: 12px;
            color: var(--text-silver);
            margin: 0;
        }

        .cert-spec-pill {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(0, 255, 136, 0.06);
            border: 1px solid rgba(0, 255, 136, 0.25);
            border-radius: 8px;
            padding: 14px 16px;
            margin-top: 20px;
        }

        /* 板块4：游戏优化 Profile 矩阵 */
        .profile-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 18px;
            border: 1px solid var(--border-subtle);
        }

        .profile-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .cyber-card:hover .profile-thumb img {
            transform: scale(1.05);
        }

        .profile-spec-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin: 16px 0;
            padding: 12px;
            background: rgba(11, 14, 20, 0.65);
            border-radius: 6px;
            border: 1px solid var(--border-subtle);
        }

        .spec-item-label {
            font-size: 11px;
            color: var(--text-slate);
            display: block;
        }

        .spec-item-val {
            font-size: 13px;
            font-weight: 700;
            color: var(--neon-green);
            font-family: monospace;
        }

        /* 板块5：帧率曲线与资源占用对比 */
        .telemetry-box {
            background: #080b10;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .bar-compare-row {
            margin-bottom: 20px;
        }

        .bar-compare-label {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            margin-bottom: 6px;
            color: var(--text-silver);
        }

        .bar-track {
            height: 12px;
            background: #171d29;
            border-radius: 6px;
            overflow: hidden;
            position: relative;
        }

        .bar-fill-neon {
            height: 100%;
            background: linear-gradient(90deg, var(--arc-blue), var(--neon-green));
            border-radius: 6px;
        }

        .bar-fill-warn {
            height: 100%;
            background: linear-gradient(90deg, #f59e0b, var(--danger-red));
            border-radius: 6px;
        }

        /* 板块6：四步极速部署流 */
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            height: 100%;
            transition: var(--transition-fast);
        }

        .step-card:hover {
            border-color: var(--neon-green);
        }

        .step-number-badge {
            width: 36px;
            height: 36px;
            border-radius: 6px;
            background: var(--neon-green);
            color: #06080c;
            font-weight: 900;
            font-family: monospace;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 0 15px rgba(0, 255, 136, 0.4);
        }

        /* 板块8：横向数据统计条 */
        .kpi-ribbon {
            background: linear-gradient(90deg, #0c121d 0%, #101d29 50%, #0c121d 100%);
            border-top: 1px solid rgba(0, 255, 136, 0.25);
            border-bottom: 1px solid rgba(0, 255, 136, 0.25);
            padding: 52px 0;
        }

        .kpi-item {
            text-align: center;
            padding: 16px;
            border-right: 1px solid var(--border-subtle);
        }

        .kpi-item:last-child {
            border-right: none;
        }

        .kpi-num {
            font-size: clamp(30px, 3.8vw, 44px);
            font-weight: 900;
            color: var(--neon-green);
            font-family: "Consolas", monospace;
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .kpi-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .kpi-sub {
            font-size: 12px;
            color: var(--text-slate);
            margin: 0;
        }

        /* 板块10：评价墙 */
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .review-avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid var(--neon-green);
        }

        .star-group {
            color: #fbbf24;
            font-size: 13px;
            margin-bottom: 10px;
        }

        .hw-tag {
            display: inline-block;
            font-size: 11px;
            font-family: monospace;
            color: var(--text-silver);
            background: rgba(255, 255, 255, 0.06);
            padding: 3px 8px;
            border-radius: 4px;
            margin-top: 12px;
        }

        /* 板块11：系统要求规格表 */
        .sysreq-table-box {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
        }

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

        .sysreq-list li {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 14px;
        }

        .sysreq-list li:last-child {
            border-bottom: none;
        }

        .sysreq-key {
            color: var(--text-slate);
            min-width: 110px;
        }

        .sysreq-val {
            color: var(--text-white);
            font-weight: 600;
            text-align: right;
        }

        /* 板块13：手风琴 FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--border-neon);
            box-shadow: 0 6px 22px rgba(0, 255, 136, 0.1);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            padding: 20px 24px;
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
        }

        .faq-icon {
            color: var(--neon-green);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
            color: var(--text-silver);
            font-size: 14px;
        }

        .faq-item.active .faq-answer {
            max-height: 360px;
            padding-bottom: 20px;
        }

        /* 板块14：底部终极下载 CTA */
        .final-cta-section {
            padding: 90px 0;
            background: 
                linear-gradient(180deg, rgba(11, 14, 20, 0.9) 0%, rgba(7, 18, 16, 0.92) 100%),
                url('/assets/images/86668fba7a5df943.webp') center/cover no-repeat;
            text-align: center;
        }

        .cta-trust-badges {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 28px;
            font-size: 13px;
            color: var(--text-silver);
        }

        .cta-trust-badges span i {
            color: var(--neon-green);
            margin-right: 6px;
        }

        /* 页脚 */
        .site-footer {
            background-color: #05070A;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 32px;
            color: var(--text-slate);
            font-size: 14px;
        }

        .footer-title {
            color: var(--text-white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

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

        .footer-links a {
            color: var(--text-silver);
            font-size: 13px;
        }

        .footer-links a:hover {
            color: var(--neon-green);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 12px;
        }

        /* 模态框通知 */
        .cyber-toast {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: #121824;
            border: 1px solid var(--neon-green);
            color: var(--text-white);
            padding: 16px 22px;
            border-radius: 8px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.8);
            z-index: 2000;
            display: none;
            max-width: 360px;
            font-size: 13px;
        }

        /* 响应式断点控制 */
        @media screen and (max-width: 1023px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #0d1119;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                border-bottom: 1px solid var(--border-neon);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .kpi-item {
                border-right: none;
                border-bottom: 1px solid var(--border-subtle);
            }
        }

        @media screen and (max-width: 639px) {
            .section-block {
                padding: 56px 0;
            }
            .hero-section {
                padding: 40px 0 56px;
            }
            .btn-neon, .btn-outline-cyber {
                width: 100%;
                min-height: 48px;
            }
            .ba-comparison-stage {
                padding: 14px;
            }
            .node-selector-wrap {
                justify-content: space-between;
                width: 100%;
                margin-top: 6px;
            }
        }