/* roulang page: index */
:root {
            --primary: #00F5D4;
            --primary-glow: rgba(0, 245, 212, 0.28);
            --secondary: #7B2CBF;
            --secondary-glow: rgba(123, 44, 191, 0.35);
            --bg-base: #0B0F19;
            --bg-surface: #121826;
            --bg-card: #182234;
            --border: #233148;
            --border-hover: #00F5D4;
            --text-main: #FFFFFF;
            --text-muted: #94A3B8;
            --text-dark: #64748B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            outline: none;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
        }

        body {
            overflow-x: hidden;
            line-height: 1.6;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background: rgba(0, 245, 212, 0.1);
            border: 1px solid rgba(0, 245, 212, 0.3);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 52px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #070B13;
            font-weight: 700;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--primary);
            box-shadow: 0 4px 20px var(--primary-glow);
            cursor: pointer;
            transition: var(--transition);
            min-height: 48px;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 26px rgba(0, 245, 212, 0.45);
            background: #26ffe3;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: var(--transition);
            min-height: 48px;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(0, 245, 212, 0.08);
            color: var(--primary);
        }

        /* 顶部通栏导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 25, 0.88);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .header-top-bar {
            background: linear-gradient(90deg, #100b21 0%, #0b0f19 50%, #081d1a 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 12px;
            color: var(--text-muted);
            padding: 6px 0;
        }

        .header-top-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .brand-logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #070B13;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            padding: 6px 0;
            position: relative;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--primary);
        }

        /* Hero 栈式布局 */
        .hero-section {
            position: relative;
            padding: 90px 0 100px;
            background: radial-gradient(circle at 50% 20%, rgba(123, 44, 191, 0.18) 0%, transparent 60%),
                        linear-gradient(180deg, rgba(11,15,25,0.7) 0%, var(--bg-base) 100%),
                        url('/assets/images/94e249dcc987539d.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.05fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(110deg, #FFFFFF 60%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-spec-pills {
            display: flex;
            gap: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .spec-item {
            display: flex;
            flex-direction: column;
        }

        .spec-item strong {
            font-size: 20px;
            color: var(--primary);
            font-weight: 800;
        }

        .spec-item span {
            font-size: 12px;
            color: var(--text-dark);
        }

        /* 卡片堆叠视觉 */
        .stack-wrapper {
            position: relative;
            height: 440px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .stack-card {
            position: absolute;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--bg-card);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            overflow: hidden;
            transition: var(--transition);
        }

        .stack-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .stack-card.main {
            width: 82%;
            height: 380px;
            z-index: 3;
            border-color: rgba(0, 245, 212, 0.5);
            box-shadow: 0 0 35px rgba(0, 245, 212, 0.2);
        }

        .stack-card.left-side {
            width: 66%;
            height: 320px;
            left: 0;
            z-index: 2;
            transform: rotate(-5deg) translateY(20px);
            opacity: 0.75;
            filter: grayscale(30%);
        }

        .stack-card.right-side {
            width: 66%;
            height: 320px;
            right: 0;
            z-index: 1;
            transform: rotate(6deg) translateY(20px);
            opacity: 0.65;
            filter: grayscale(40%);
        }

        .stack-wrapper:hover .stack-card.left-side {
            transform: rotate(-8deg) translateX(-15px) translateY(10px);
            opacity: 0.9;
        }
        .stack-wrapper:hover .stack-card.right-side {
            transform: rotate(9deg) translateX(15px) translateY(10px);
            opacity: 0.85;
        }

        /* 通用板块样式 */
        .page-section {
            padding: 85px 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--bg-surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        /* 适用人群 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .audience-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: var(--transition);
        }

        .audience-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0, 245, 212, 0.08);
        }

        .audience-icon {
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .audience-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #fff;
        }

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

        /* 适合与不适合对比 (谁适合/谁不适合) */
        .fit-contrast-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            max-width: 1050px;
            margin: 0 auto;
        }

        .fit-col {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 34px 30px;
            border: 1px solid var(--border);
        }

        .fit-col.ideal {
            border-color: rgba(0, 245, 212, 0.4);
            box-shadow: 0 8px 30px rgba(0, 245, 212, 0.05);
        }

        .fit-col.not-fit {
            border-color: rgba(239, 68, 68, 0.3);
            background: rgba(22, 27, 38, 0.7);
        }

        .fit-col h3 {
            font-size: 20px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .fit-col.ideal h3 {
            color: var(--primary);
        }

        .fit-col.not-fit h3 {
            color: #F87171;
        }

        .fit-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .fit-list li {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-muted);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .fit-list li b {
            color: var(--text-main);
        }

        /* 匹配方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .sol-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            position: relative;
        }

        .sol-card.highlight {
            border-color: var(--primary);
            box-shadow: 0 0 30px rgba(0, 245, 212, 0.15);
        }

        .sol-card-banner {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .sol-card-banner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sol-card:hover .sol-card-banner img {
            transform: scale(1.05);
        }

        .sol-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .sol-tag {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(8px);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .sol-card-body h3 {
            font-size: 19px;
            margin-bottom: 12px;
            color: #fff;
        }

        .sol-card-body p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 18px;
            flex: 1;
        }

        .sol-specs {
            margin-bottom: 22px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .sol-specs span {
            display: block;
            font-size: 12.5px;
            color: #A0ABC0;
            margin-bottom: 6px;
        }

        /* 引擎核心技术链路 (Section 2) */
        .engine-pipeline {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .pipeline-text h3 {
            font-size: 26px;
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .pipeline-metrics-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin: 26px 0;
        }

        .p-metric {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: var(--radius-md);
        }

        .p-metric strong {
            display: block;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .p-metric span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .pipeline-img-frame {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
        }

        /* 卖点三连矩阵 */
        .tri-matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tri-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .tri-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .tri-card:hover {
            border-color: rgba(0, 245, 212, 0.4);
            transform: translateY(-5px);
        }

        .tri-card:hover::before {
            opacity: 1;
        }

        .tri-card h3 {
            font-size: 20px;
            margin-bottom: 14px;
            color: #fff;
        }

        .tri-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .tri-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tri-tag {
            font-size: 12px;
            padding: 3px 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            color: #CBD5E1;
        }

        /* 六维优势网格 */
        .six-adv-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .adv-box {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            transition: var(--transition);
        }

        .adv-box:hover {
            border-color: var(--primary);
        }

        .adv-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }

        .adv-header h3 {
            font-size: 17px;
            color: #fff;
        }

        .adv-index {
            font-size: 12px;
            color: var(--primary);
            font-weight: 800;
        }

        .adv-box p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .adv-stat {
            font-size: 12px;
            color: var(--text-dark);
            border-top: 1px dashed var(--border);
            padding-top: 10px;
        }

        /* 拟态引擎视窗交互演示 */
        .engine-console-mock {
            background: #0D121F;
            border: 1px solid #233148;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
        }

        .console-topbar {
            background: #161F33;
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }

        .console-dots {
            display: flex;
            gap: 6px;
        }

        .console-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #334155;
        }

        .console-dots span:nth-child(1) { background: #EF4444; }
        .console-dots span:nth-child(2) { background: #F59E0B; }
        .console-dots span:nth-child(3) { background: #10B981; }

        .console-title {
            font-size: 12px;
            font-family: monospace;
            color: #94A3B8;
        }

        .console-tabs {
            display: flex;
            background: #111726;
            border-bottom: 1px solid var(--border);
        }

        .console-tab-btn {
            padding: 12px 24px;
            background: transparent;
            border: none;
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            border-right: 1px solid var(--border);
            transition: var(--transition);
        }

        .console-tab-btn.active {
            background: #0D121F;
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }

        .console-body {
            display: grid;
            grid-template-columns: 1fr 1fr;
            padding: 24px;
            gap: 24px;
            min-height: 380px;
        }

        .console-pane-text {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 13px;
            color: #A0ABC0;
            line-height: 1.7;
            background: #070B13;
            padding: 18px;
            border-radius: var(--radius-sm);
            border: 1px solid #1E293B;
            overflow-x: auto;
        }

        .console-preview-stage {
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid #1E293B;
            position: relative;
        }

        .console-preview-stage img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 案例与对比 (前后对比) */
        .before-after-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .ba-col {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border);
        }

        .ba-col.before {
            border-color: #334155;
        }

        .ba-col.after {
            border-color: rgba(0, 245, 212, 0.4);
            box-shadow: 0 10px 30px rgba(0, 245, 212, 0.05);
        }

        .ba-col h3 {
            font-size: 18px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .ba-item {
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .ba-item:last-child {
            border-bottom: none;
        }

        .ba-item h4 {
            font-size: 14px;
            color: #E2E8F0;
            margin-bottom: 4px;
        }

        .ba-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 关键数据看板 */
        .metric-counter-band {
            background: linear-gradient(90deg, #100C22 0%, #0F172A 50%, #071F1B 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 50px 0;
        }

        .metrics-flex {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .metric-num {
            font-size: 42px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .metric-title {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 研发评价 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
        }

        .reviewer-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #2D3748;
            overflow: hidden;
            border: 1px solid var(--primary);
        }

        .reviewer-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .reviewer-meta strong {
            display: block;
            font-size: 14px;
            color: #fff;
        }

        .reviewer-meta span {
            font-size: 12px;
            color: var(--text-dark);
        }

        /* 资讯卡片 */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .insight-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .insight-card:hover {
            border-color: rgba(0, 245, 212, 0.4);
            transform: translateY(-4px);
        }

        .insight-thumb {
            height: 180px;
            overflow: hidden;
        }

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

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

        .insight-content {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .insight-date {
            font-size: 12px;
            color: var(--primary);
            margin-bottom: 8px;
            display: block;
        }

        .insight-content h3 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .insight-content p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        /* 常见疑问手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 14px;
        }

        /* 保障说明条 */
        .guarantee-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .g-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
        }

        .g-item h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 8px;
        }

        .g-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 咨询表单收口区 */
        .contact-cta-wrapper {
            background: radial-gradient(circle at center, rgba(123, 44, 191, 0.2) 0%, rgba(11, 15, 25, 0.95) 70%),
                        var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px;
            max-width: 960px;
            margin: 0 auto;
        }

        .contact-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 28px;
        }

        .form-control {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-control label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .form-control input, .form-control select, .form-control textarea {
            background: #0B0F19;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: #fff;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control input:focus, .form-control select:focus, .form-control textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0, 245, 212, 0.2);
        }

        .form-full {
            grid-column: span 2;
        }

        /* 页脚 */
        .site-footer {
            background: #070A11;
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
            font-size: 13.5px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 800;
        }

        .footer-col h5 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12.5px;
            color: var(--text-dark);
        }

        /* 底部常驻悬浮行动条 */
        .bottom-floating-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(14, 19, 31, 0.92);
            backdrop-filter: blur(14px);
            border-top: 1px solid rgba(0, 245, 212, 0.25);
            padding: 12px 0;
            z-index: 999;
            display: flex;
            align-items: center;
        }

        .floating-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .floating-text strong {
            color: #fff;
            font-size: 14px;
            margin-right: 12px;
        }

        .floating-text span {
            color: var(--primary);
            font-size: 13px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-cta-group, .hero-spec-pills {
                justify-content: center;
            }
            .stack-wrapper {
                height: 360px;
                margin-top: 20px;
            }
            .audience-grid, .solutions-grid, .tri-matrix-grid, .six-adv-grid, .insights-grid, .guarantee-bar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .engine-pipeline {
                grid-template-columns: 1fr;
            }
            .console-body {
                grid-template-columns: 1fr;
            }
            .metrics-flex {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .audience-grid, .solutions-grid, .tri-matrix-grid, .six-adv-grid, .insights-grid, .guarantee-bar-grid, .reviews-grid, .before-after-grid, .fit-contrast-box {
                grid-template-columns: 1fr;
            }
            .contact-form-grid {
                grid-template-columns: 1fr;
            }
            .form-full {
                grid-column: span 1;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .floating-text {
                display: none;
            }
            .floating-inner {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }