/* ================= 基础变量与重置 ================= */
        :root {
            --bg-light: #F9F7F3;
            --bg-alt: #F0EBE1;
            --text-main: #2C2A29;
            --text-light: #7A736E;
            --accent: #C49A6C;
            --white: #FFFFFF;
            --font-main: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --font-serif: 'Georgia', 'Times New Roman', serif;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }

        .section-padding { padding: 120px 5%; }
        .container { max-width: 1400px; margin: 0 auto; }
        
        .section-header { text-align: center; margin-bottom: 80px; }
        .subtitle { font-size: 13px; color: var(--accent); letter-spacing: 4px; text-transform: uppercase; font-weight: 600; margin-bottom: 15px; display: block; }
        .title { font-size: 42px; font-weight: 300; color: var(--text-main); letter-spacing: 2px; }

        .btn { display: inline-block; padding: 16px 45px; background: transparent; border: 1px solid var(--text-main); color: var(--text-main); font-size: 14px; letter-spacing: 2px; text-transform: uppercase; cursor: pointer; transition: 0.3s; }
        .btn:hover { background: var(--text-main); color: var(--bg-light); }
        .btn-fill { background: var(--accent); border-color: var(--accent); color: var(--white); }
        .btn-fill:hover { background: #b0885c; }

        /* ================= 导航栏 ================= */
        header { position: absolute; top: 0; width: 100%; padding: 30px 5%; display: flex; justify-content: space-between; align-items: center; z-index: 100; }
        .logo { font-size: 28px; font-weight: 500; letter-spacing: 3px; color: var(--white); }
        .logo span { font-size: 12px; display: block; letter-spacing: 6px; font-weight: 300; margin-top: 4px; }
        nav ul { display: flex; gap: 40px; }
        nav a { font-size: 15px; font-weight: 400; color: var(--white); position: relative; }
        nav a::after { content: ''; position: absolute; width: 0; height: 1px; bottom: -5px; left: 0; background-color: var(--white); transition: width 0.3s; }
        nav a:hover::after { width: 100%; }
        .lang-switch { color: var(--white); font-size: 14px; letter-spacing: 1px; display: flex; align-items: center; gap: 8px; }
        .lang-switch button { background: none; border: none; color: var(--white); cursor: pointer; font-size: 14px; letter-spacing: 1px; font-family: var(--font-main); transition: color 0.3s ease; }
        .lang-switch button:hover, .lang-switch button.active { color: var(--accent); }

        /* ================= 首屏 轮播 Banner ================= */
        .hero-slider { position: relative; height: 100vh; overflow: hidden; background-color: #1a1a1a; }
        
        .slide { 
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; 
            background-size: cover; background-position: center; 
            opacity: 0; transition: opacity 1.5s ease-in-out; z-index: 0;
            display: flex; align-items: center; justify-content: center; text-align: center;
        }
        .slide.active { opacity: 1; z-index: 1; }
        
        .hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.4); z-index: 1; }
        
        .hero-content { 
            position: relative; z-index: 2; color: var(--white); max-width: 900px; padding: 0 20px;
            opacity: 0; transform: translateY(40px);
            transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            transition-delay: 0.4s; 
        }
        .slide.active .hero-content { opacity: 1; transform: translateY(0); }

        .hero-title { font-size: 68px; font-weight: 300; line-height: 1.2; margin-bottom: 25px; letter-spacing: 6px; text-shadow: 0 4px 20px rgba(0,0,0,0.3); color: var(--white); }
        .hero-desc { font-size: 20px; font-weight: 300; letter-spacing: 2px; margin-bottom: 45px; opacity: 0.9; color: var(--white); }
        
        .hero-content .btn { border-color: var(--white); color: var(--white); }
        .hero-content .btn:hover { background: var(--white); color: var(--text-main); }

        .slider-dots { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; gap: 15px; }
        .dot { width: 40px; height: 2px; background: rgba(255,255,255,0.4); cursor: pointer; transition: 0.3s; }
        .dot.active { background: var(--white); }

        /* ================= 核心产品展示 (动态选项卡) ================= */
        .product-section { background-color: var(--bg-alt); }
        
        .product-filters { display: flex; justify-content: center; flex-wrap: wrap; gap: 15px 30px; margin-bottom: 50px; }
        .filter-btn { background: none; border: none; font-size: 15px; color: var(--text-light); cursor: pointer; padding-bottom: 5px; position: relative; transition: color 0.3s ease; font-family: var(--font-main); letter-spacing: 1px; }
        .filter-btn .count { font-size: 12px; opacity: 0.6; font-family: var(--font-serif); }
        .filter-btn::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background-color: var(--accent); transition: width 0.3s ease; }
        .filter-btn:hover { color: var(--text-main); }
        .filter-btn.active { color: var(--text-main); font-weight: 500; }
        .filter-btn.active::after { width: 100%; }

        .product-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .product-item { background: var(--white); overflow: hidden; transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94); transform: scale(1); opacity: 1; }
        .product-item.hide { display: none; }
        .p-img-box { height: 400px; overflow: hidden; position: relative; }
        .p-img-box img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
        .product-item:hover .p-img-box img { transform: scale(1.08); }
        .p-info { padding: 30px; text-align: center; }
        .p-info h3 { font-size: 22px; font-weight: 400; margin-bottom: 10px; color: var(--text-main); }
        .p-info p { font-size: 14px; color: var(--text-light); margin-bottom: 20px; line-height: 1.6; }
        .p-link { font-size: 13px; color: var(--accent); text-transform: uppercase; font-weight: 600; letter-spacing: 1px; transition: 0.3s; }
        .p-link:hover { color: var(--text-main); }

        /* ================= 品牌未来规划 (数据面板) ================= */
        .vision-section { position: relative; padding: 120px 5% 60px; background: url('../images/factory-render.jpg') center/cover fixed; background-color: #1a1a1a; color: var(--white); overflow: hidden; }
        .vision-section::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(90deg, rgba(15, 17, 21, 0.95) 0%, rgba(15, 17, 21, 0.8) 40%, rgba(15, 17, 21, 0.2) 100%); z-index: 1; }
        .vision-container { position: relative; z-index: 2; max-width: 1400px; margin: 0 auto; display: flex; flex-direction: column; gap: 60px; }
        .vision-header { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 1px solid rgba(255, 255, 255, 0.15); padding-bottom: 30px; }
        .vh-left h2 { font-size: 56px; font-weight: 600; letter-spacing: 2px; margin-bottom: 5px; font-family: 'Helvetica Neue', Arial, sans-serif; text-transform: uppercase; }
        .vh-left p { font-size: 16px; color: var(--accent); letter-spacing: 4px; }
        .vh-right { text-align: right; padding-top: 15px; }
        .vh-right .en { font-size: 14px; letter-spacing: 3px; margin-bottom: 5px; color: rgba(255, 255, 255, 0.8); }
        .vh-right .cn { font-size: 13px; letter-spacing: 6px; color: rgba(255, 255, 255, 0.5); }
        .vision-concepts { display: flex; flex-direction: column; gap: 30px; max-width: 500px; }
        .vc-item { display: flex; align-items: flex-start; gap: 20px; transition: transform 0.3s ease; cursor: default; }
        .vc-item:hover { transform: translateX(10px); }
        .vc-icon { width: 48px; height: 48px; flex-shrink: 0; border: 1px solid rgba(196, 154, 108, 0.5); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--accent); }
        .vc-icon svg { width: 24px; height: 24px; fill: currentColor; }
        .vc-text h4 { font-size: 18px; font-weight: 500; margin-bottom: 4px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
        .vc-text h4 span { font-size: 11px; font-weight: 300; color: var(--accent); letter-spacing: 1px; border: 1px solid rgba(196, 154, 108, 0.3); padding: 2px 8px; border-radius: 20px; }
        .vc-text p { font-size: 13px; color: rgba(255, 255, 255, 0.6); letter-spacing: 1px; }
        .vision-stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 40px; padding: 40px; background: rgba(0, 0, 0, 0.3); backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 4px; }
        .vs-item { display: flex; flex-direction: column; align-items: center; text-align: center; position: relative; }
        .vs-item:not(:last-child)::after { content: ''; position: absolute; right: -10px; top: 20%; height: 60%; width: 1px; background: rgba(255, 255, 255, 0.1); }
        .vs-icon { color: var(--accent); margin-bottom: 15px; }
        .vs-icon svg { width: 32px; height: 32px; fill: currentColor; }
        .vs-data { font-size: 36px; font-family: 'Helvetica Neue', Arial, sans-serif; font-weight: 500; line-height: 1; margin-bottom: 5px; }
        .vs-data span { font-size: 16px; font-weight: 300; margin-left: 2px; }
        .vs-label-en { font-size: 11px; color: rgba(255, 255, 255, 0.7); letter-spacing: 1px; margin-bottom: 2px; }
        .vs-label-cn { font-size: 13px; color: rgba(255, 255, 255, 0.5); letter-spacing: 2px; }

        /* ================= 全球工程案例 (画廊) ================= */
        .projects-section { background-color: var(--white); }
        .project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        .project-card { position: relative; height: 450px; overflow: hidden; cursor: pointer; }
        .project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
        
        .project-info {
            position: absolute;
            bottom: 0; left: 0; width: 100%;
            padding: 40px 30px;
            background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 50%, transparent 100%);
            color: var(--white);
            transform: translateY(30px);
            opacity: 0.9;
            transition: all 0.4s ease;
        }

        .project-tag { display: inline-block; font-size: 12px; color: var(--accent); border: 1px solid var(--accent); padding: 3px 10px; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 1px; border-radius: 20px; }
        .project-info h3 { font-size: 24px; font-weight: 400; margin-bottom: 8px; }
        .project-info p { font-size: 14px; color: rgba(255,255,255,0.7); opacity: 0; transition: opacity 0.4s 0.1s ease; }
        
        .project-card:hover img { transform: scale(1.08); }
        .project-card:hover .project-info { transform: translateY(0); opacity: 1; }
        .project-card:hover .project-info p { opacity: 1; }

        /* ================= 品牌工艺优势 ================= */
        .craft-section { background-color: var(--bg-light); border-top: 1px solid var(--bg-alt); }
        .craft-row { display: flex; align-items: center; gap: 80px; margin-bottom: 100px; }
        .craft-row:last-child { margin-bottom: 0; }
        .craft-row.reverse { flex-direction: row-reverse; }
        .craft-img { flex: 1; overflow: hidden; }
        .craft-img img { width: 100%; height: 500px; object-fit: cover; transition: transform 0.8s ease; }
        .craft-img:hover img { transform: scale(1.05); }
        .craft-text { flex: 1; padding: 0 40px; }
        .craft-num { font-family: var(--font-serif); font-size: 60px; color: var(--bg-alt); line-height: 1; margin-bottom: -20px; position: relative; z-index: 0; }
        .craft-text h3 { font-size: 32px; font-weight: 300; margin-bottom: 20px; position: relative; z-index: 1; }
        .craft-text p { color: var(--text-light); font-size: 15px; margin-bottom: 20px; }

        /* ================= 产品视频 ================= */
        .video-section { position: relative; height: 70vh; display: flex; align-items: center; justify-content: center; overflow: hidden; }
        .bg-video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
        .video-section::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); z-index: 1; }
        .video-content { position: relative; z-index: 2; text-align: center; color: #ffffff; }
        .play-btn { width: 80px; height: 80px; border: 2px solid var(--white); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; cursor: pointer; transition: all 0.3s; }
        .play-btn::after { content: '▶'; font-size: 24px; margin-left: 5px; color: var(--white); }
        .play-btn:hover { background: var(--accent); border-color: var(--accent); transform: scale(1.1); }
        .video-content h2 { font-size: 36px; font-weight: 300; letter-spacing: 2px; color: var(--white);}

        /* ================= 升级版：全球化供应链服务 (暖色极简风) ================= */
        .b2b-service-section { background-color: var(--bg-light); border-top: 1px solid var(--bg-alt); }
        
        .b2b-service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-top: 60px;
        }

        .b2b-service-item {
            border-top: 2px solid var(--text-main);
            padding-top: 20px;
            transition: transform 0.3s ease;
        }

        .b2b-service-item:hover {
            transform: translateY(-5px);
        }

        .b2b-service-item h3 {
            font-size: 20px;
            font-weight: 400;
            margin-bottom: 15px;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            color: var(--text-main);
            line-height: 1.4;
        }

        .b2b-service-item h3 span { 
            color: var(--accent); 
            font-family: var(--font-serif); 
            font-style: italic; 
            font-size: 20px;
            margin-left: 10px;
        }

        .b2b-service-item p { 
            color: var(--text-light); 
            font-size: 14px; 
            line-height: 1.7; 
        }

        /* ================= 底部区域 ================= */
        footer { background: #1a1a1a; color: var(--bg-alt); padding: 80px 5% 30px; border-top: 1px solid rgba(255,255,255,0.05); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; margin-bottom: 60px; }
        .footer-logo { font-size: 24px; color: var(--white); letter-spacing: 3px; margin-bottom: 20px; }
        .footer-col h4 { color: var(--white); font-size: 16px; margin-bottom: 25px; font-weight: 400; letter-spacing: 1px; }
        .footer-col ul li { margin-bottom: 15px; }
        .footer-col ul li a { color: #a39e99; font-size: 14px; }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); color: #7a736e; font-size: 12px; }

        /* ================= 响应式 ================= */
        @media (max-width: 1024px) {
            .hero-title { font-size: 50px; }
            .product-gallery, .project-grid { grid-template-columns: repeat(2, 1fr); }
            .vision-header { flex-direction: column; gap: 20px; }
            .vh-right { text-align: left; }
            .vision-stats { grid-template-columns: repeat(3, 1fr); gap: 30px; }
            .vs-item:nth-child(3)::after { display: none; }
            .craft-row { grid-template-columns: 1fr; gap: 40px; flex-direction: column !important; }
            .craft-text { padding: 0; }
            .b2b-service-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            nav ul, .lang-switch { display: none; }
            header { background: rgba(44, 42, 41, 0.9); padding: 20px 5%; }
            .hero-title { font-size: 40px; }
            .product-gallery, .project-grid { grid-template-columns: 1fr; }
            .product-filters { gap: 10px 15px; }
            .filter-btn { font-size: 13px; }
            .vision-section { padding: 80px 5%; }
            .vision-section::before { background: rgba(15, 17, 21, 0.85); }
            .vh-left h2 { font-size: 36px; }
            .vision-stats { grid-template-columns: 1fr; gap: 40px; padding: 30px 20px; }
            .vs-item::after { display: none !important; }
            .b2b-service-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .section-padding { padding: 80px 5%; }
        }

/* 商业官网重构增强 */
header.site-header { position:absolute; }
header.site-header.is-fixed { position:fixed; background:rgba(26,26,26,.86); backdrop-filter:blur(14px); box-shadow:0 10px 30px rgba(0,0,0,.12); padding-top:18px; padding-bottom:18px; }
.logo { display:flex; align-items:center; color:var(--white); }
.logo-mark { width:184px; height:auto; display:block; }
.logo-cn { font-size:12px; letter-spacing:7px; color:var(--white); margin-top:5px; text-align:center; opacity:.92; }
.lang-switch { display:flex; align-items:center; gap:8px; }
.lang-switch button { background:none; border:0; color:rgba(255,255,255,.72); cursor:pointer; font-size:14px; letter-spacing:1px; padding:4px 2px; }
.lang-switch button.active { color:var(--white); border-bottom:1px solid var(--accent); }
nav a.active::after { width:100%; }
.page-hero { min-height:62vh; display:flex; align-items:center; justify-content:center; text-align:center; color:var(--white); position:relative; background-size:cover; background-position:center; padding:160px 5% 100px; }
.page-hero::before { content:''; position:absolute; inset:0; background:rgba(0,0,0,.48); }
.page-hero-content { position:relative; z-index:1; max-width:900px; }
.page-hero h1 { font-size:58px; font-weight:300; letter-spacing:5px; margin-bottom:18px; color:var(--white); }
.page-hero p { font-size:18px; letter-spacing:2px; opacity:.88; color:var(--white); }
.breadcrumb { font-size:13px; letter-spacing:2px; color:var(--accent); text-transform:uppercase; margin-bottom:18px; display:block; }
.lead { color:var(--text-light); max-width:760px; margin:20px auto 0; font-size:16px; line-height:1.9; }
.value-grid,.cert-grid,.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.value-card,.cert-card,.contact-card{background:var(--white);padding:36px;border-top:2px solid var(--accent);min-height:190px;transition:.3s}
.value-card:hover,.cert-card:hover,.contact-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(0,0,0,.08)}
.value-card h3,.cert-card h3,.contact-card h3{font-size:22px;font-weight:400;margin-bottom:14px}
.value-card p,.cert-card p,.contact-card p{color:var(--text-light);font-size:14px;line-height:1.8}
.product-page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.product-detail-card{background:var(--white);overflow:hidden}
.product-detail-card img{height:320px;width:100%;object-fit:cover}
.product-detail-card .content{padding:30px}
.product-detail-card h3{font-size:24px;font-weight:400;margin-bottom:10px}
.product-detail-card p{color:var(--text-light);font-size:14px;line-height:1.8;margin-bottom:18px}
.feature-list li{color:var(--text-light);font-size:14px;margin-bottom:8px;position:relative;padding-left:18px}
.feature-list li::before{content:'•';color:var(--accent);position:absolute;left:0}
.solution-band{background:#1a1a1a;color:var(--white)}
.solution-band .title,.solution-band h3{color:var(--white)}
.solution-band p{color:rgba(255,255,255,.68)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.process-card{background:rgba(255,255,255,.06);padding:30px;border:1px solid rgba(255,255,255,.1)}
.process-card::before{counter-increment:step;content:'0' counter(step);display:block;color:var(--accent);font-family:var(--font-serif);font-size:36px;margin-bottom:18px}
.contact-form{background:var(--white);padding:42px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-control{width:100%;padding:15px 16px;border:1px solid #ddd6cc;background:#fff;margin-bottom:18px;font-family:var(--font-main)}
textarea.form-control{min-height:140px;resize:vertical}
.notice{margin-top:16px;color:var(--accent);font-size:14px;display:none}.notice.show{display:block}
@media(max-width:1024px){.value-grid,.cert-grid,.contact-grid,.product-page-grid{grid-template-columns:repeat(2,1fr)}.process-grid{grid-template-columns:repeat(2,1fr)}.page-hero h1{font-size:44px}}
@media(max-width:768px){.logo-mark{width:145px}.logo-cn{font-size:10px;letter-spacing:5px}.value-grid,.cert-grid,.contact-grid,.product-page-grid,.process-grid,.form-row{grid-template-columns:1fr}.page-hero{min-height:52vh}.page-hero h1{font-size:34px}}


/* ===== 修复版：SVG 文字 Logo 与导航初始显示 ===== */
.brand-logo {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    line-height: 1;
    min-width: 214px;
}
.brand-word {
    display: flex;
    align-items: center;
    gap: 7px;
    white-space: nowrap;
}
.brand-text {
    font-family: "Helvetica Neue", Arial, sans-serif;
    font-size: 22px;
    font-weight: 400;
    letter-spacing: 5px;
    color: var(--white);
}
.brand-m {
    width: 48px;
    height: 33px;
    display: block;
    flex: 0 0 auto;
    margin: 0 -2px 0 -4px;
}
.logo-cn {
    margin-top: 13px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 9px;
    color: var(--white);
    text-align: center;
    opacity: .96;
    padding-left: 8px;
}
.site-header nav ul { align-items: center; }
@media(max-width:768px){
    .brand-logo{min-width:170px; align-items:flex-start;}
    .brand-text{font-size:19px; letter-spacing:4px;}
    .brand-m{width:41px;height:29px;}
    .logo-cn{font-size:10px;letter-spacing:6px;padding-left:4px;margin-top:10px;}
}
.site-logo img {
  width: 220px;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .site-logo img {
    width: 160px;
  }
}

/* ===== 统一图片 Logo + 手机导航 ===== */
.site-header {
  gap: 28px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  position: relative;
  z-index: 120;
}
.site-logo img {
  width: 220px;
  height: auto;
  display: block;
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,.45);
  background: rgba(0,0,0,.12);
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  position: relative;
  z-index: 130;
}
.menu-toggle span {
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
body.nav-open {
  overflow: hidden;
}
body.nav-open .menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.nav-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}
body.nav-open .menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  header.site-header {
    position: fixed;
    padding: 16px 5%;
    background: rgba(26,26,26,.9);
    backdrop-filter: blur(14px);
  }
  .site-logo img {
    width: 160px;
  }
  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .site-header nav {
    position: fixed;
    inset: 0;
    background: rgba(18,18,18,.96);
    backdrop-filter: blur(18px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity .28s ease, transform .28s ease;
    z-index: 110;
  }
  .site-header nav ul {
    display: flex !important;
    flex-direction: column;
    gap: 26px;
    text-align: center;
  }
  .site-header nav a {
    font-size: 20px;
    letter-spacing: 3px;
  }
  body.nav-open .site-header nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .site-header .lang-switch {
    display: flex !important;
    position: fixed;
    left: 50%;
    bottom: 44px;
    transform: translateX(-50%);
    z-index: 120;
    opacity: 0;
    pointer-events: none;
    transition: opacity .28s ease;
  }
  body.nav-open .site-header .lang-switch {
    opacity: 1;
    pointer-events: auto;
  }
}