/* 全局变量与鲜绿夺目风格基调 */
        :root {
            --primary: #10b981;
            --primary-dark: #047857;
            --primary-deep: #064e3b;
            --primary-light: #34d399;
            --primary-soft: #ecfdf5;
            --primary-tint: #d1fae5;
            --accent: #059669;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #64748b;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --border-focus: #a7f3d0;
            --shadow-sm: 0 2px 8px rgba(16, 185, 129, 0.06);
            --shadow-md: 0 10px 25px -5px rgba(16, 185, 129, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 20px 35px -10px rgba(16, 185, 129, 0.16);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1200px;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

        ul, ol {
            list-style: none;
        }

        /* 统一容器系统 */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 头部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(16, 185, 129, 0.15);
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-box {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-main);
        }

        .logo-box .ai-page-logo {
            height: 38px;
            width: auto;
            display: block;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .nav-links li a {
            display: inline-block;
            padding: 8px 12px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 20px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #ffffff !important;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 999px;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }

        .btn-header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            color: var(--text-main);
        }

        /* 首屏 Hero 区域（严禁图片） */
        .hero-section {
            position: relative;
            padding: 80px 0 90px;
            background: radial-gradient(circle at 50% 20%, rgba(209, 250, 229, 0.65) 0%, rgba(248, 250, 252, 0.95) 70%);
            border-bottom: 1px solid rgba(16, 185, 129, 0.12);
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: #ffffff;
            border: 1px solid var(--border-focus);
            color: var(--primary-dark);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulseRing 2s infinite;
        }

        @keyframes pulseRing {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        .hero-title {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-title .highlight-text {
            color: var(--accent);
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .hero-desc {
            max-width: 800px;
            margin: 0 auto 36px;
            font-size: 1.12rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 34px;
            background: linear-gradient(135deg, #10b981 0%, #047857 100%);
            color: #ffffff !important;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 999px;
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.38);
        }

        .btn-primary-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(16, 185, 129, 0.48);
        }

        .btn-secondary-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 30px;
            background: #ffffff;
            color: var(--text-main);
            font-size: 1.02rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary-outline:hover {
            border-color: var(--primary);
            color: var(--accent);
            background: var(--primary-soft);
        }

        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .hero-stat-card {
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(16, 185, 129, 0.2);
            padding: 20px 16px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
        }

        .hero-stat-card:hover {
            background: #ffffff;
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .stat-value {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用Section排版规范 */
        .section-padding {
            padding: 85px 0;
            position: relative;
        }

        .section-alt-bg {
            background: #f0fdf4;
            background: linear-gradient(180deg, #f8fafc 0%, #f0fdf4 50%, #f8fafc 100%);
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 55px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 0.84rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            background: var(--primary-soft);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            border: 1px solid var(--border-focus);
        }

        .section-title {
            font-size: clamp(1.65rem, 3vw, 2.3rem);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 模型聚合矩阵标签 */
        .model-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
        }

        .model-pill {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-main);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .model-pill:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }

        /* 卡片与网格体系 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

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

        .feature-icon-wrapper {
            width: 48px;
            height: 48px;
            background: var(--primary-soft);
            border: 1px solid var(--border-focus);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.4rem;
            margin-bottom: 18px;
        }

        .feature-title {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-text {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex-grow: 1;
        }

        /* 标准流程流水线 */
        .process-steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .step-item-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .step-badge {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #ffffff;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .step-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* 对比评测卡片与表格 */
        .rating-banner-box {
            background: linear-gradient(135deg, #ffffff 0%, #ecfdf5 100%);
            border: 2px solid var(--border-focus);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            margin-bottom: 35px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-md);
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .score-huge {
            font-size: 3.4rem;
            font-weight: 900;
            color: var(--primary-dark);
            line-height: 1;
        }

        .rating-stars {
            color: #f59e0b;
            font-size: 1.3rem;
            letter-spacing: 2px;
            margin-bottom: 4px;
        }

        .rating-verdict-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .rating-tagline {
            font-size: 0.92rem;
            color: var(--text-muted);
        }

        .comparison-table-wrapper {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow-x: auto;
            box-shadow: var(--shadow-sm);
        }

        .comp-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 680px;
        }

        .comp-table th, .comp-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.92rem;
        }

        .comp-table th {
            background: #f8fafc;
            color: var(--text-main);
            font-weight: 700;
        }

        .comp-table th.col-highlight,
        .comp-table td.col-highlight {
            background: rgba(209, 250, 229, 0.35);
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* 素材展示与案例中心 */
        .media-gallery-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 30px;
        }

        .media-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .media-img-container {
            width: 100%;
            aspect-ratio: 16 / 9;
            background: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .media-img-container.square-ratio {
            aspect-ratio: 1 / 1;
            max-height: 380px;
        }

        .media-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .media-info-box {
            padding: 18px 20px;
        }

        .media-info-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .media-info-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .promo-banners-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .promo-banner-item {
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .promo-banner-item img {
            width: 100%;
            height: auto;
            display: block;
        }

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

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .review-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .review-quote {
            font-size: 0.94rem;
            color: var(--text-main);
            line-height: 1.65;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }

        .author-avatar-dummy {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            border: 1px solid var(--border-focus);
        }

        .author-name {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .author-title {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 需求表单与交互匹配 */
        .form-card-container {
            background: #ffffff;
            border: 1px solid var(--border-focus);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            max-width: 820px;
            margin: 0 auto;
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

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

        .form-label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text-main);
            background: #fafafa;
            transition: var(--transition);
            font-family: inherit;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        .btn-submit-form {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
            transition: var(--transition);
        }

        .btn-submit-form:hover {
            opacity: 0.95;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
        }

        /* FAQ 折叠面板 */
        .faq-accordion-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-focus);
        }

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

        .faq-question-btn::after {
            content: "+";
            font-size: 1.4rem;
            color: var(--accent);
            font-weight: 400;
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-question-btn::after {
            transform: rotate(45deg);
        }

        .faq-answer-box {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #fbfdfc;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.65;
            border-top: 1px solid rgba(16, 185, 129, 0.08);
            padding-top: 14px;
        }

        /* 资讯与文章列表 */
        .articles-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .article-links-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .article-link-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--primary-dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .article-link-tag:hover {
            border-color: var(--primary);
            background: var(--primary-soft);
        }

        /* 联系与客服专区 */
        .contact-card-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 30px;
            background: #ffffff;
            border: 1px solid var(--border-focus);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .contact-qr-wrapper {
            text-align: center;
            background: var(--primary-soft);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px dashed var(--primary);
        }

        .contact-qr-wrapper img {
            max-width: 180px;
            height: auto;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
        }

        .contact-meta-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            justify-content: center;
        }

        .contact-meta-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .meta-icon-badge {
            width: 36px;
            height: 36px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
            border: 1px solid var(--border-focus);
        }

        .meta-label {
            font-size: 0.84rem;
            color: var(--text-light);
        }

        .meta-text {
            font-size: 0.96rem;
            font-weight: 600;
            color: var(--text-main);
        }

        /* 页脚规范 */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }

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

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.88rem;
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-friend-links {
            padding: 20px 0;
            border-top: 1px solid #334155;
            border-bottom: 1px solid #334155;
            margin-bottom: 25px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.86rem;
        }

        .footer-friend-links a {
            color: #cbd5e1;
        }

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

        .footer-bottom-bar {
            text-align: center;
            font-size: 0.84rem;
            color: #64748b;
        }

        /* 浮动工具栏 */
        .floating-widget-bar {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .floating-action-btn {
            width: 48px;
            height: 48px;
            background: #ffffff;
            border: 1px solid var(--border-focus);
            border-radius: 50%;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .floating-action-btn:hover {
            background: var(--primary);
            color: #ffffff;
            transform: scale(1.08);
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .process-steps-container { grid-template-columns: repeat(2, 1fr); }
            .promo-banners-strip { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .contact-card-grid { grid-template-columns: 1fr; }
            .nav-links { display: none; }
            .mobile-menu-btn { display: block; }
        }

        @media (max-width: 640px) {
            .grid-4, .grid-3, .grid-2, .hero-stats-grid, .media-gallery-grid, .reviews-grid, .process-steps-container {
                grid-template-columns: 1fr;
            }
            .form-grid { grid-template-columns: 1fr; }
            .form-group-full { grid-column: span 1; }
            .footer-grid { grid-template-columns: 1fr; }
            .rating-banner-box { flex-direction: column; text-align: center; }
            .rating-left { flex-direction: column; }
            .hero-section { padding: 50px 0 60px; }
            .section-padding { padding: 55px 0; }
        }