/* ============================================================
           关于我们 · 独立页面样式
           设计令牌 + 排版 · 商务蓝配色
           ============================================================ */

        /* ----- 设计令牌 (与主站一致) ----- */
        :root {
            --c-primary: #2563EB;
            --c-primary-h: #3B82F6;
            --c-primary-a: #EFF6FF;
            --c-accent: #0891B2;
            --c-accent-h: #22D3EE;
            --grad-brand: linear-gradient(135deg, #1D4ED8 0%, #2563EB 50%, #0891B2 100%);
            --grad-brand-h: linear-gradient(135deg, #2563EB 0%, #0E7490 100%);
            --grad-card: linear-gradient(180deg, #F8FAFC 0%, #EFF6FF 100%);
            --t-1: #0F172A;
            --t-2: #334155;
            --t-3: #64748B;
            --t-4: #94A3B8;
            --t-inv: #FFFFFF;
            --bg-page: #FFFFFF;
            --bg-section: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-footer: #0F172A;
            --sh-xs: 0 1px 2px rgba(0,0,0,.04);
            --sh-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
            --sh-md: 0 4px 16px rgba(37,99,235,.08), 0 2px 6px rgba(0,0,0,.04);
            --sh-lg: 0 12px 40px rgba(37,99,235,.12), 0 4px 12px rgba(0,0,0,.06);
            --sh-xl: 0 20px 60px rgba(37,99,235,.16), 0 8px 20px rgba(0,0,0,.08);
            --sh-btn: 0 4px 14px rgba(37,99,235,.25);
            --r-xs: 6px;
            --r-sm: 8px;
            --r-md: 12px;
            --r-lg: 16px;
            --r-xl: 24px;
            --r-full: 9999px;
            --e-out: cubic-bezier(0.4, 0, 0.2, 1);
            --e-in-out: cubic-bezier(0.65, 0, 0.35, 1);
            --t-fast: 0.2s;
            --t-normal: 0.35s;
            --t-slow: 0.5s;
        }

        html { scroll-behavior: smooth; }
        body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

        /* ============================================================
           导航栏 NAVBAR (与主站一致，含完整下拉面板)
           ============================================================ */
        #nav {
            background: rgba(255,255,255,.78) !important;
            backdrop-filter: saturate(180%) blur(20px) !important;
            -webkit-backdrop-filter: saturate(180%) blur(20px) !important;
            border-bottom: none !important;
            box-shadow: 0 1px 6px rgba(0,0,0,.03) !important;
            height: 64px; line-height: 64px;
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
        }
        .nav .nav-content {
            height: 64px;
            display: -webkit-box;
            display: -ms-flexbox;
            display: flex;
            -webkit-box-pack: justify;
            -ms-flex-pack: justify;
            justify-content: flex-start;
            -webkit-box-align: center;
            -ms-flex-align: center;
            align-items: center;
        }
        .nav .nav-func {
            height: 64px;
            font-size: 0;
            margin-right: auto;
        }
        .nav .nav-func_item {
            transition: color var(--t-fast) var(--e-out);
            position: relative;
            display: inline-block;
            height: inherit;
            margin: 0 22px;
            vertical-align: middle;
        }
        .nav .nav-func_item > a {
            transition: color var(--t-fast) var(--e-out);
            position: relative;
            display: block;
            line-height: 64px;
            color: var(--t-2);
            font-weight: 700;
        }
        /* 下拉面板默认隐藏 */
        .nav .more-list, .nav .product-list {
            max-height: 0;
            overflow: hidden;
            -webkit-transition: max-height .3s ease-in-out;
            transition: max-height .3s ease-in-out;
            z-index: 200;
        }
        .nav .nav-func_item:hover .product-list,
        .nav .nav-func_item:hover .more-list {
            max-height: 500px;
        }
        /* 导航当前页高亮 */
        .nav .nav-func_item__active {
            color: var(--c-primary) !important;
        }
        .nav .nav-func_item__active > a,
        .nav .nav-func_item__active a {
            color: var(--c-primary) !important;
        }
        .nav .nav-func_item__active::after {
            background: var(--c-primary) !important;
        }
        /* Logo 与副标语（与主站一致） */
        .nav .nav-logo_wrap { gap: 12px; margin-right: 40px; }
        .nav .nav-logo {
            width: 42px;
            height: 42px;
            object-fit: contain;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(37,99,235,.16);
            background: rgba(255,255,255,.6);
            padding: 4px;
            transition: transform .3s var(--e-out), box-shadow .3s var(--e-out);
        }
        .nav .nav-logo_wrap:hover .nav-logo {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 8px 20px rgba(37,99,235,.24);
        }
        .nav .nav-logo_text {
            display: flex;
            flex-direction: column;
            line-height: 1.1;
            font-size: 22px !important;
            font-weight: 800 !important;
            letter-spacing: 1.5px !important;
            color: #000;
        }
        .nav .nav-logo_slogan {
            font-size: 11px !important;
            font-weight: 500 !important;
            letter-spacing: 1px !important;
            color: #64748B;
            -webkit-text-fill-color: #64748B;
            margin-top: 2px;
            white-space: nowrap;
        }
        .nav .nav-func_item > a::after {
            content: '';
            position: absolute;
            top: 25px;
            width: 10px;
            height: 10px;
            right: -12px;
            background-image: url(../img/about_url_1_669016dd.png);
            background-repeat: no-repeat;
            background-size: cover;
            transition: background var(--t-fast) var(--e-out);
        }
        .nav .nav-func_item:first-child > a::after {
            content: '';
            background: none;
        }
        .nav .nav-func_item:hover > a { color: var(--c-primary) !important; }
        .nav .nav-func_item::after {
            background: var(--c-primary) !important;
            height: 2.5px;
        }

        /* 下拉菜单 */
        .nav .more-list {
            border-radius: var(--r-md) !important;
            box-shadow: var(--sh-lg) !important;
            border: 1px solid rgba(37,99,235,.06) !important;
            overflow: hidden;
            top: 64px;
            padding: 6px 0;
            min-width: 140px;
            left: -30px;
        }
        .nav .more-item {
            line-height: 40px;
            margin: 0;
            padding: 0 24px;
            transition: all var(--t-fast) var(--e-out);
            white-space: nowrap;
            font-size: 14px;
            display: block;
        }
        .nav .more-item:hover {
            background: var(--c-primary-a) !important;
            color: var(--c-primary) !important;
        }

        /* 导航按钮 */
        .nav .nav-func_btn {
            display: inline-block;
            vertical-align: top;
            margin: 15px 0 0;
            font-size: 14px;
            text-align: center;
        }
        .nav .nav-func_submit {
            border-radius: var(--r-full) !important;
            border: 1.5px solid var(--c-primary) !important;
            color: var(--c-primary) !important;
            font-weight: 600;
            transition: all var(--t-fast) var(--e-out);
            height: 36px; line-height: 33px;
            padding: 0 22px;
            margin: 16px 16px 0 16px;
        }
        .nav .nav-func_submit:hover {
            background: var(--c-primary) !important;
            color: #fff !important;
            box-shadow: var(--sh-btn);
        }
        .nav .nav-func_forFree {
            border-radius: var(--r-full) !important;
            background: var(--grad-brand) !important;
            color: #fff !important;
            font-weight: 600;
            transition: all var(--t-fast) var(--e-out);
            height: 36px; line-height: 36px;
            padding: 0 22px;
            box-shadow: var(--sh-btn);
        }
        .nav .nav-func_forFree:hover {
            box-shadow: 0 6px 24px rgba(37,99,235,.35);
            transform: translateY(-1px);
            opacity: 1 !important;
        }

        /* 下拉产品面板 */
        .nav .product-list {
            top: 64px;
            border-radius: 0 0 var(--r-lg) var(--r-lg);
            box-shadow: var(--sh-xl);
            border-bottom: none !important;
            height: auto !important;
            max-height: 0;
            overflow-y: auto !important;
            transition: max-height 0.5s ease-in-out !important;
            flex-wrap: wrap !important;
        }
        .nav .nav-func_item:hover .product-list {
            border-bottom: none !important;
            max-height: 1200px !important;
        }
        .nav .maxHeight {
            max-height: 1200px !important;
        }
        .nav .product-list .product-item__sp {
            height: auto !important;
            overflow: visible !important;
        }
        /* 导航tab不可点击 */
        .nav .nav-func_item > a.noclick {
            cursor: default;
            pointer-events: none;
        }
        .nav .product-list .product-item__sp {
            border-right: none !important;
        }
        .nav .product-list .product-item__yunying-img {
            display: inline-block;
            width: 24px;
            height: 24px;
            margin: 0 16px 0 0;
            background-position: center;
            background-repeat: no-repeat;
            background-size: 20px;
        }
        .nav .product-list .product-item__yunying-img1 {
            background-image: url(../img/about_url_2_881ae5be.svg);
        }
        .nav .product-list .product-item__yunying-img2 {
            background-image: url(../img/about_url_3_598a7b51.svg);
        }
        .nav .product-list .product-item__yunying-img3 {
            background-image: url(../img/about_url_4_e6459411.svg);
        }
        .nav .product-list .product-item__yunying-img4 {
            background-image: url(../img/about_url_5_dd1ebf05.svg);
        }
        .nav .product-list .product-item__yunying-img5 {
            background-image: url(../img/about_url_6_3d5090d5.svg);
        }
        .nav .product-list .product-item__func {
            border-radius: var(--r-sm);
            margin: 0 4px;
            padding: 0 8px;
            transition: background var(--t-fast) var(--e-out);
        }
        .nav .product-list .product-item__func:hover {
            background: var(--c-primary-a);
        }
        .nav .product-list .product-item__name {
            font-size: 14px !important;
        }

        /* 页面顶部留白 */
        .page-body { padding-top: 64px; }

        /* 内容容器 */
        .about-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px 0;
        }

        /* 板块通用标题增强 */
        .about-section { margin-bottom: 90px; }
        .about-section__desc {
            text-align: center;
            color: var(--t-3);
            font-size: 15px;
            line-height: 1.9;
            max-width: 760px;
            margin: 0 auto 40px;
        }

        /* ============================================================
           公司介绍（新版左右两栏）
           ============================================================ */
        .company-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: 1100px;
            margin: 0 auto;
        }
        .company-info__intro {
            font-size: 16px;
            line-height: 2;
            color: var(--t-2);
            margin: 0 0 28px;
        }
        .company-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        .company-stat {
            text-align: center;
            padding: 16px 24px;
            background: #F8FAFC;
            border-radius: var(--r-md);
        }
        .company-stat b {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: var(--c-primary);
            line-height: 1.1;
        }
        .company-stat b em { font-style: normal; font-size: 14px; }
        .company-stat span {
            display: block;
            font-size: 13px;
            color: var(--t-3);
            margin-top: 6px;
        }
        .company-cta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .company-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--r-full);
            font-size: 15px;
            font-weight: 700;
            text-decoration: none;
            transition: all var(--t-fast) var(--e-out);
        }
        .company-cta a:first-child {
            background: var(--c-primary);
            color: #fff;
        }
        .company-cta a:first-child:hover { background: #1D4ED8; transform: translateY(-2px); }
        .company-cta a:last-child {
            border: 1.5px solid #CBD5E1;
            color: var(--t-1);
        }
        .company-cta a:last-child:hover { border-color: var(--c-primary); color: var(--c-primary); }
        .company-photos { display: flex; flex-direction: column; gap: 20px; }
        .company-photos__row { display: flex; gap: 20px; }
        .company-photos__row .about-photo-card { flex: 1; min-width: 0; }

        /* ============================================================
           Hero 横幅
           ============================================================ */
        .about-hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            border-bottom: 1px solid #E2E8F0;
            text-align: center;
            padding: 88px 20px 76px;
        }
        .about-hero__bg {
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 18% 25%, rgba(37,99,235,.10) 0%, transparent 52%),
                radial-gradient(ellipse at 82% 78%, rgba(8,145,178,.08) 0%, transparent 46%);
            pointer-events: none;
        }
        .about-hero__content { position: relative; z-index: 1; }
        .about-hero__badge {
            display: inline-block;
            color: var(--c-primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 4px;
            background: rgba(37,99,235,.08);
            border: 1px solid rgba(37,99,235,.16);
            border-radius: var(--r-full);
            padding: 6px 18px;
            margin-bottom: 20px;
        }
        .about-hero__title {
            font-size: 44px;
            font-weight: 800;
            color: var(--t-1);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .about-hero__sub {
            font-size: 18px;
            color: var(--t-3);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .about-hero__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .about-hero__btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 38px;
            border-radius: var(--r-full);
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: all var(--t-fast) var(--e-out);
        }
        .about-hero__btn--primary {
            background: linear-gradient(135deg, #2563EB, #3B82F6);
            color: #fff;
            box-shadow: 0 8px 20px rgba(37,99,235,.28);
        }
        .about-hero__btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(37,99,235,.36); }
        .about-hero__btn--ghost {
            background: #fff;
            color: var(--c-primary);
            border: 1.5px solid #BFDBFE;
        }
        .about-hero__btn--ghost:hover { border-color: var(--c-primary); background: rgba(37,99,235,.04); transform: translateY(-2px); }

        /* ============================================================
           板块标题
           ============================================================ */
        .section-title { text-align: center; }
        .section-title h2 {
            font-size: 36px; font-weight: 800; color: var(--t-1);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 16px; color: var(--t-3);
        }

        /* 子标题（带蓝色下划线装饰） */
        .sub-title {
            text-align: center; margin-bottom: 32px;
        }
        .sub-title h3 {
            font-size: 24px; font-weight: 700; color: var(--t-1);
            position: relative; display: inline-block;
        }
        .sub-title h3::after {
            content: '';
            position: absolute; bottom: -8px; left: 50%;
            transform: translateX(-50%);
            width: 48px; height: 3px;
            background: var(--c-primary); border-radius: 2px;
        }

        /* 图片占位通用 */
        .img-placeholder {
            border-radius: var(--r-lg); overflow: hidden;
            box-shadow: var(--sh-md);
            position: relative;
        }
        .img-placeholder img {
            width: 100%; display: block;
        }
        .img-caption {
            text-align: center; margin-top: 16px;
            color: var(--t-3); font-size: 14px;
        }

        /* 门头照 / 营业执照 展示卡 */
        .about-photo-card {
            border-radius: var(--r-lg);
            overflow: hidden;
            box-shadow: var(--sh-md);
            border: 1px solid #E2E8F0;
            background: #fff;
        }
        .about-photo-card .about-photo-card__head {
            padding: 12px 16px;
            background: var(--c-primary-a);
            font-size: 15px;
            font-weight: 600;
            color: var(--c-primary);
            border-bottom: 1px solid rgba(37,99,235,.08);
        }
        .about-photo-card .about-photo-card__head i {
            font-style: normal;
            font-size: 12px;
            color: var(--t-3);
            font-weight: 400;
            margin-left: 6px;
        }

        /* ============================================================
           公司介绍宣传图
           ============================================================ */
        .section-intro { margin-bottom: 80px; }

        /* ============================================================
           核心优势 四宫格
           ============================================================ */
        .section-advantage { margin-bottom: 80px; }
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--grad-card);
            border-radius: var(--r-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--sh-sm);
            transition: all var(--t-normal) var(--e-out);
        }
        .advantage-card:hover {
            box-shadow: var(--sh-md);
            transform: translateY(-4px);
        }
        .advantage-card__icon {
            width: 56px; height: 56px;
            margin: 0 auto 16px;
            background: var(--c-primary-a);
            border-radius: var(--r-md);
            display: flex; align-items: center; justify-content: center;
        }
        .advantage-card__icon svg {
            width: 28px; height: 28px;
        }
        .advantage-card h4 {
            font-size: 17px; font-weight: 700;
            color: var(--t-1); margin-bottom: 8px;
        }
        .advantage-card p {
            font-size: 14px; color: var(--t-3);
            line-height: 1.7; margin: 0;
        }
        .advantage-card__num {
            display: inline-block;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--c-primary);
            background: var(--c-primary-a);
            border-radius: var(--r-full);
            padding: 3px 12px;
            margin-bottom: 14px;
        }

        /* ============================================================
           软著证书 三列
           ============================================================ */
        .section-copyright { margin-bottom: 80px; }
        .copyright-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .copyright-card {
            background: #fff;
            border-radius: var(--r-lg);
            overflow: hidden;
            box-shadow: var(--sh-sm);
            border: 1px solid #E2E8F0;
            transition: all var(--t-normal) var(--e-out);
        }
        .copyright-card:hover {
            box-shadow: var(--sh-md);
            transform: translateY(-4px);
        }
        .copyright-card img {
            width: 100%; display: block;
            aspect-ratio: 3/4; object-fit: cover;
        }
        .copyright-card__label {
            padding: 16px; text-align: center;
            color: var(--t-2); font-size: 14px; font-weight: 500;
        }

        /* ============================================================
           营业执照
           ============================================================ */
        .section-license { margin-bottom: 80px; }
        .license-wrapper {
            max-width: 700px; margin: 0 auto;
        }
        .license-card {
            background: #fff;
            border-radius: var(--r-lg);
            overflow: hidden;
            box-shadow: var(--sh-md);
            border: 1px solid #E2E8F0;
        }
        .license-card img {
            width: 100%; display: block;
            aspect-ratio: 4/3; object-fit: contain;
            background: #FAFBFC;
        }

        /* ============================================================
           演示弹窗
           ============================================================ */
        .demo-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,.5);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            animation: fadeIn .25s ease;
        }
        .demo-overlay.active {
            display: flex;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        @keyframes slideUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .demo-modal {
            background: #fff;
            border-radius: var(--r-xl);
            width: 820px;
            max-width: 90vw;
            max-height: 85vh;
            overflow-y: auto;
            box-shadow: 0 24px 80px rgba(0,0,0,.25);
            animation: slideUp .3s ease;
        }
        .demo-modal__topbar {
            background: linear-gradient(135deg, #2563EB 0%, #3B82F6 55%, #0891B2 100%);
            padding: 22px 44px 18px;
            text-align: center;
            position: relative;
            border-radius: var(--r-xl) var(--r-xl) 0 0;
        }
        .demo-modal__topbar-title {
            font-size: 21px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
            letter-spacing: 1px;
        }
        .demo-modal__topbar-sub {
            font-size: 13px;
            color: rgba(255,255,255,.85);
        }
        .demo-modal__close {
            position: absolute;
            top: 14px; right: 14px;
            width: 34px; height: 34px;
            border-radius: 50%;
            border: none;
            background: rgba(255,255,255,.22);
            cursor: pointer;
            font-size: 16px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .3s;
            box-shadow: 0 2px 8px rgba(0,0,0,.12);
        }
        .demo-modal__close:hover {
            background: rgba(255,255,255,.4);
            transform: rotate(90deg);
        }
        .demo-modal__body {
            padding: 24px 32px 0;
        }
        .demo-modal__footer-bar {
            padding: 16px 32px;
            background: #f8fafc;
            border-top: 1px solid #e8ecf1;
            text-align: center;
            font-size: 13px;
            color: #64748b;
            line-height: 1.8;
        }
        .demo-modal__footer-bar a {
            color: #1E3A5F;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
        }
        .demo-modal__footer-bar a:hover {
            text-decoration: underline;
        }
        .demo-section {
            margin-bottom: 20px;
        }
        .demo-section__title {
            font-size: 15px;
            font-weight: 700;
            color: var(--t-1);
            margin-bottom: 10px;
            padding-left: 12px;
            border-left: 3px solid var(--c-primary);
        }
        .demo-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            padding: 4px 0;
            margin-bottom: 6px;
            font-size: 13px;
        }
        .demo-row__label {
            color: #64748B;
            font-size: 12px;
            white-space: nowrap;
            min-width: 90px;
        }
        .demo-row__value {
            color: var(--t-1);
            font-weight: 500;
            word-break: break-all;
        }
        .demo-row__value a {
            color: var(--c-primary);
            font-size: 13px;
        }
        .demo-row__value a:hover {
            text-decoration: underline;
        }
        .demo-tag {
            display: inline-block;
            background: var(--c-primary-a);
            color: var(--c-primary);
            padding: 2px 10px;
            border-radius: var(--r-xs);
            font-size: 13px;
            font-weight: 600;
            margin-right: 6px;
        }
        .demo-pricing {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .demo-pricing__card {
            flex: 1;
            min-width: 180px;
            background: var(--c-primary-a);
            border-radius: var(--r-md);
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .demo-pricing__top {
            flex: 1;
        }
        .demo-pricing__name {
            font-size: 14px;
            font-weight: 700;
            color: var(--t-1);
            margin-bottom: 6px;
        }
        .demo-pricing__desc {
            font-size: 11px;
            color: #94A3B8;
            line-height: 1.5;
            margin-bottom: 12px;
        }
        .demo-pricing__bottom {
            flex-shrink: 0;
        }
        .demo-pricing__price {
            font-size: 28px;
            font-weight: 900;
            background: linear-gradient(135deg, #2563EB, #0891B2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .demo-pricing__note {
            font-size: 11px;
            color: #94A3B8;
        }
        .demo-qrcode {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .demo-qrcode__item {
            text-align: center;
            flex: 1;
            min-width: 160px;
            max-width: 220px;
        }
        .demo-qrcode__img {
            width: 100%;
            max-width: 180px;
            border-radius: var(--r-md);
            border: 1px solid #E2E8F0;
            display: block;
            margin: 0 auto 8px;
        }
        .demo-qrcode__label {
            font-size: 13px;
            font-weight: 600;
            color: var(--t-1);
            margin-bottom: 2px;
        }
        .demo-qrcode__tip {
            font-size: 11px;
            color: #94A3B8;
        }

        /* ============================================================
           联系我们弹窗
           ============================================================ */
        .contact-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,.5);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            animation: fadeIn .25s ease;
        }
        .contact-overlay.active {
            display: flex;
        }
        /* 新联系我们弹窗 */
        .contact-new-modal {
            position: relative;
            border-radius: 0;
            width: 651px;
            max-width: 92vw;
            overflow: hidden;
            box-shadow: none;
            animation: slideUp .3s ease;
        }
        .contact-new-modal__close {
            position: absolute;
            top: 10px; right: 10px;
            z-index: 10;
            width: 32px; height: 32px;
            border-radius: 50%;
            border: none;
            background: rgba(0,0,0,0.35);
            cursor: pointer;
            font-size: 16px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s;
        }
        .contact-new-modal__close:hover {
            background: rgba(0,0,0,0.55);
        }
        /* 微信咨询独立弹窗（大气版） */
        .contact-wechat-modal {
            width: 480px;
            max-width: 92vw;
            border-radius: 20px !important;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 20px 60px rgba(15,23,42,.22) !important;
        }
        .contact-wechat__topbar {
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 26px 56px;
            background: linear-gradient(135deg, #1D4ED8 0%, #2563EB 55%, #0891B2 100%);
            color: #fff;
        }
        .contact-wechat__title {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 2px;
        }
        .contact-wechat__sub {
            font-size: 12px;
            letter-spacing: 1px;
            color: rgba(255,255,255,.8);
        }
        .contact-wechat__close {
            position: absolute;
            top: 14px;
            right: 14px;
            width: 32px;
            height: 32px;
            border: none;
            border-radius: 50%;
            background: rgba(255,255,255,.22);
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .3s;
        }
        .contact-wechat__close:hover {
            background: rgba(255,255,255,.4);
            transform: rotate(90deg);
        }
        .contact-wechat__body {
            padding: 30px 28px 26px;
            text-align: center;
        }
        .contact-wechat__qrcode {
            width: 200px;
            height: 200px;
            margin: 0 auto 18px;
            padding: 12px;
            border: 1px solid #E2E8F0;
            border-radius: 16px;
            background: #fff;
            box-shadow: 0 6px 20px rgba(15,23,42,.1);
            position: relative;
        }
        .contact-wechat__qrcode img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            border-radius: 10px;
            display: block;
        }
        .contact-wechat__tip {
            font-size: 16px;
            font-weight: 700;
            color: #1E293B;
            margin: 0 0 8px;
        }
        .contact-wechat__desc {
            font-size: 13px;
            color: #64748B;
            margin: 0 0 20px;
            line-height: 1.6;
        }
        .contact-wechat__adv {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 20px;
            padding: 16px;
            border-radius: 12px;
            background: #F8FAFC;
        }
        .contact-wechat__adv-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: #334155;
            text-align: left;
        }
        .contact-wechat__adv-item svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
        }
        .contact-wechat__tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 18px;
            border-top: 1px dashed #E2E8F0;
        }
        .contact-wechat__tags span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 16px;
            font-size: 12px;
            font-weight: 600;
            color: #2563EB;
            background: #EFF6FF;
            border-radius: 999px;
        }
        .contact-wechat__tags span::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #22C55E;
        }

        /* ============================================================
           联系我们（页面内容区）
           ============================================================ */
        .section-contact { margin-bottom: 80px; }
        .contact-buttons {
            display: flex; justify-content: center;
            gap: 16px; flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            background: var(--grad-brand);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--r-full);
            text-decoration: none;
            font-size: 16px; font-weight: 600;
            box-shadow: var(--sh-btn);
            transition: all var(--t-fast) var(--e-out);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 24px rgba(37,99,235,.35);
            transform: translateY(-2px); opacity: 1;
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--c-primary);
            padding: 14px 40px;
            border-radius: var(--r-full);
            border: 2px solid var(--c-primary);
            text-decoration: none;
            font-size: 16px; font-weight: 600;
            transition: all var(--t-fast) var(--e-out);
        }
        .btn-outline:hover {
            background: var(--c-primary-a);
        }

        /* ============================================================
           联系我们（页面内容区）
           ============================================================ */
        .contact-cards {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 900px;
            margin: 0 auto 40px;
        }
        .contact-card {
            flex: 1;
            min-width: 200px;
            max-width: 280px;
            background: #fff;
            border: 1px solid #E2E8F0;
            border-radius: var(--r-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--sh-sm);
            transition: all var(--t-normal) var(--e-out);
        }
        .contact-card:hover {
            box-shadow: var(--sh-md);
            transform: translateY(-4px);
            border-color: rgba(37,99,235,.3);
        }
        .contact-card__icon {
            width: 52px; height: 52px;
            margin: 0 auto 14px;
            background: var(--c-primary-a);
            border-radius: var(--r-md);
            display: flex; align-items: center; justify-content: center;
        }
        .contact-card__icon svg { width: 26px; height: 26px; }
        .contact-card h4 {
            font-size: 15px; font-weight: 700;
            color: var(--t-1); margin-bottom: 8px;
        }
        .contact-card p {
            font-size: 14px; color: var(--t-3);
            line-height: 1.6; margin: 0;
            word-break: break-all;
        }
        .contact-info-block {
            max-width: 560px;
            margin: 0 auto;
            text-align: center;
            background: var(--grad-card);
            border-radius: var(--r-lg);
            padding: 32px 28px;
            box-shadow: var(--sh-sm);
        }
        .contact-info-block p {
            font-size: 15px;
            color: var(--t-2);
            line-height: 2.2;
        }
        .contact-info-block p strong { color: var(--c-primary); }

        /* ============================================================
           源码转化横幅 SOURCE-CTA
           ============================================================ */
        .source-cta {
            position: relative;
            overflow: hidden;
            padding: 64px 0;
            background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 55%, #0891B2 100%);
        }
        .source-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 40%, rgba(255,255,255,.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .source-cta__content {
            position: relative;
            z-index: 1;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .source-cta__text { flex: 1; min-width: 300px; }
        .source-cta__text h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin: 0 0 14px;
            line-height: 1.3;
            letter-spacing: -.5px;
        }
        .source-cta__text h2 span { color: #FDE047; }
        .source-cta__text p {
            color: rgba(255,255,255,.85);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
        }
        .source-cta__actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex-shrink: 0;
        }
        .source-cta__btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 15px 40px;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: .5px;
            transition: all var(--t-fast) var(--e-out);
            white-space: nowrap;
        }
        .source-cta__btn--primary {
            background: #fff;
            color: #2563EB;
            box-shadow: 0 8px 24px rgba(0,0,0,.2);
        }
        .source-cta__btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,.28); }
        .source-cta__btn--ghost {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,.8);
        }
        .source-cta__btn--ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }

        /* ============================================================
           Footer
           ============================================================ */
        .footer {
            background: var(--bg-footer); color: #CBD5E1;
            padding: 48px 0 32px;
        }
        .footer .wrapper {
            max-width: 1200px; margin: 0 auto; padding: 0 20px;
        }
        .footer_flex {
            display: flex; gap: 40px; flex-wrap: wrap;
        }
        .footerList_tit { flex: 1; min-width: 180px; }
        .footerList_tit h3 {
            color: #fff; font-size: 16px; margin-bottom: 16px; font-weight: 600;
        }
        .footerList_tit p, .footerList_tit a {
            color: #94A3B8; font-size: 14px; line-height: 2;
            text-decoration: none; display: block;
        }
        .footerList_tit a:hover { color: var(--c-primary-h); }
        .footer .copyright {
            text-align: center; padding-top: 32px; margin-top: 32px;
            border-top: 1px solid rgba(255,255,255,.08);
            color: #64748B; font-size: 13px;
        }

        /* ============================================================
           响应式
           ============================================================ */
        /* ============================================================
           悬浮客服 FLOATING (与主站一致)
           ============================================================ */
        .floating_ck{position:fixed;right:24px;top:50%;z-index:999999;transform:translateY(-50%);display:flex;flex-direction:column;align-items:center;gap:0;}
        .floating_ck dl{display:flex;flex-direction:column;gap:14px;}
        .floating_ck dl dd{position:relative;width:132px;text-align:center;cursor:pointer;padding:16px 8px;border-radius:18px;box-sizing:border-box;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;justify-content:center;border:none;box-shadow:0 6px 20px rgba(37,99,235,.18);}
        .floating_ck dl dd:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(37,99,235,.28);}
        .floating_ck .demo-card{background:linear-gradient(135deg,#2563EB,#3B82F6);}
        .floating_ck .demo-card .demo-icon{width:40px;height:40px;margin-bottom:8px;position:relative;}
        .floating_ck .demo-card .demo-icon::before{content:'';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:0;height:0;border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;}
        .floating_ck .demo-card .demo-text{color:#fff;font-size:14px;font-weight:600;letter-spacing:1px;}
        .floating_ck .consult{background:linear-gradient(135deg,#0891B2,#06B6D4);}
        .floating_ck .consult .consult-icon{width:44px;height:44px;margin-bottom:6px;background:url(../img/zixun.png) center/contain no-repeat;}
        .floating_ck .consult .consult-text{color:#fff;font-size:14px;font-weight:600;letter-spacing:1px;}
        .floating_ck .qrcord{background:linear-gradient(135deg,#1E293B,#334155);}
        .floating_ck .qrcord .qrcord-inner{display:block;width:88px;height:88px;margin-bottom:10px;background:#fff url(../img/kfsy.jpg) center/90% no-repeat;border-radius:10px;flex-shrink:0;box-shadow:0 2px 8px rgba(0,0,0,.2);}
        .floating_ck .qrcord .qrcord-text{color:#fff;font-size:13px;font-weight:600;white-space:nowrap;}
        .floating_ck .qrcord .qrcord-popup{position:absolute;right:148px;top:50%;transform:translateY(-50%);width:180px;height:180px;background:#fff;border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.25);padding:12px;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;pointer-events:none;}
        .floating_ck .qrcord .qrcord-popup img{width:100%;height:100%;object-fit:contain;border-radius:6px;}
        .floating_ck .qrcord:hover .qrcord-popup{opacity:1;visibility:visible;}
        .floating_ck .demo-card .demo-text{color:#fff;font-size:13px;font-weight:400;letter-spacing:1px;}
        .floating_ck dl dd:hover{opacity:0.92;}
        .floating_ck__promo{margin-top:14px;display:flex;flex-direction:column;gap:6px;width:132px;}
        .floating_ck__promo span{display:block;text-align:center;padding:6px 8px;border-radius:10px;font-size:12px;font-weight:600;line-height:1.4;box-shadow:0 3px 10px rgba(0,0,0,.08);}
        .floating_ck__promo-hot{background:#FFF3E0;color:#B45309;border:1px solid #FDE68A;}
        .floating_ck__promo-count{background:#EFF6FF;color:#1D4ED8;border:1px solid #BFDBFE;}
        .floating_ck__promo-count b{font-size:14px;}

        /* PC端隐藏移动端元素 */
        .m-hamburger { display: none !important; }
        .m-drawer { display: none !important; }
        .m-drawer__mask { display: none !important; }

        /* 手机端悬浮按钮 */
        .m-float-demo{position:fixed;right:16px;bottom:96px;z-index:99999;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#2563EB,#3B82F6);box-shadow:0 6px 18px rgba(37,99,235,.4);display:none;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;gap:2px;}
        .m-float-demo svg,.m-float-contact svg{width:20px;height:20px;}
        .m-float-demo span{color:#fff;font-size:10px;font-weight:600;line-height:1;}
        .m-float-contact{position:fixed;right:16px;bottom:28px;z-index:99999;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#0891B2,#06B6D4);box-shadow:0 6px 18px rgba(8,145,178,.4);display:none;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;gap:2px;}
        .m-float-contact span{color:#fff;font-size:10px;font-weight:600;line-height:1;}
        @media (max-width: 900px) {
            .m-float-demo,.m-float-contact{display:flex;}
        }

        /* ============================================================
           响应式
           ============================================================ */
        @media (max-width: 768px) {
            /* 模板桌面固定宽度覆盖，避免横向溢出 */
            body { min-width: 0 !important; overflow-x: hidden; padding-top: 56px; }
            .wrapper { width: 100% !important; min-width: 0 !important; max-width: 100% !important; }
            .container, .about-container { width: 100% !important; max-width: 100% !important; padding-left: 16px !important; padding-right: 16px !important; }
            /* 导航移动端适配：隐藏右侧导航项，仅保留汉堡菜单 */
            .nav-content { max-width: 100% !important; flex-wrap: nowrap; justify-content: space-between !important; padding-left: 16px !important; padding-right: 16px !important; }
            .nav .product-list { display: none !important; min-width: 0 !important; }
            .nav .nav-func { display: none !important; }
            .nav .nav-func_item { flex-shrink: 0; margin: 0 8px; }
            /* 汉堡菜单 */
            .m-hamburger { display: flex !important; flex-direction: column; justify-content: center; align-items: center; width: 36px; height: 36px; cursor: pointer; z-index: 10001; gap: 5px; flex-shrink: 0; }
            .m-hamburger span { display: block; width: 22px; height: 2px; background: var(--t-1); border-radius: 2px; transition: all .25s ease; }
            .m-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
            .m-hamburger.active span:nth-child(2) { opacity: 0; }
            .m-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
            /* 侧滑抽屉 */
            .m-drawer { display: block !important; position: fixed; top: 0; right: -280px; width: 280px; height: 100vh; background: #fff; z-index: 10000; box-shadow: -4px 0 20px rgba(0,0,0,.15); transition: right .3s ease; overflow-y: auto; padding: 20px 16px 40px; }
            .m-drawer.active { right: 0; }
            .m-drawer__mask { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 9999; }
            .m-drawer__mask.active { display: block; }
            .m-drawer__title { font-size: 14px; font-weight: 700; color: var(--c-primary); margin-bottom: 10px; margin-top: 16px; padding-bottom: 6px; border-bottom: 2px solid var(--c-primary); }
            .m-drawer__title:first-child { margin-top: 0; }
            .m-drawer__item { display: block; padding: 10px 0; font-size: 14px; color: var(--t-2); text-decoration: none; border-bottom: 1px solid #F1F5F9; }
            .m-drawer__item:hover { color: var(--c-primary); }
            .m-drawer__btns { display: flex; gap: 10px; margin-top: 24px; }
            .m-drawer__btns a { flex: 1; display: block; text-align: center; padding: 10px 0; border-radius: 20px; font-size: 14px; font-weight: 600; text-decoration: none; }
            .m-drawer__btns .m-drawer__demo { border: 2px solid var(--c-primary); color: var(--c-primary); }
            .m-drawer__btns .m-drawer__contact { background: linear-gradient(135deg,#2563EB,#0891B2); color: #fff; }
            .about-hero { padding-top: 56px; }
            .advantage-grid { grid-template-columns: repeat(2, 1fr); }
            .copyright-grid { grid-template-columns: 1fr; }
            .section-title h2 { font-size: 28px; }
            .sub-title h3 { font-size: 20px; }
            .about-hero { padding: 64px 16px 56px; }
            .about-hero__title { font-size: 30px; }
            .about-hero__sub { font-size: 15px; }
            .source-cta { padding: 40px 16px; }
            .source-cta__content { flex-direction: column; text-align: center; gap: 24px; }
            .source-cta__text h2 { font-size: 22px; }
            .source-cta__actions { flex-direction: row; flex-wrap: wrap; justify-content: center; }
            .source-cta__btn { padding: 12px 26px; font-size: 14px; }
            .contact-cards { max-width: 100%; }
            .contact-card { min-width: 160px; }
            .about-photo-card { }
            .section-intro > div[style*="display:flex"] { flex-direction: column; }
            /* 公司介绍移动端单列 */
            .company-grid { grid-template-columns: 1fr !important; gap: 36px; }
            .company-stats { gap: 12px; }
            .company-stat { flex: 1; padding: 14px 10px; min-width: 100px; }
            .company-stat b { font-size: 24px; }
            .company-photos__row { flex-direction: column; }
            .company-photos__row .about-photo-card { width: 100%; }
            .advantage-card { padding: 24px 18px; }
            .advantage-card h4 { font-size: 15px; }
        }