:root {
            /* 主色体系 - 绿色家族 */
            --primary: #6B7B28;
            --primary-dark: #4A5A1A;
            --primary-light: #8B9B3A;
            --primary-lighter: #A8B86A;
            --secondary: #2D5016;
            --secondary-dark: #1A350D;
            --accent: #A4B84A;
            /* 金色强调体系 */
            --gold: #C9A84C;
            --gold-dark: #A88C3D;
            --gold-light: #E8D5A3;
            --gold-lighter: #F0E5C0;
            /* 中性色体系 */
            --white: #ffffff;
            --light-bg: #F8FAF3;
            --light-green: #EEF2E3;
            --cream: #F0EBE0;
            --bg-warm: #F5F3EB;
            --text: #2C3E2D;
            --text-light: #3A4A3C;
            --text-muted: #8A9B8C;
            --gray-500: #6B7280;
            --gray-600: #4B5563;
            /* 阴影 */
            --shadow-sm: 0 2px 8px rgba(107,123,40,0.10);
            --shadow: 0 4px 24px rgba(107,123,40,0.12);
            --shadow-lg: 0 12px 48px rgba(107,123,40,0.18);
            /* 圆角 */
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            /* 字体层级 - 统一字号 */
            --text-xs: 12px;
            --text-sm: 13px;
            --text-base: 15px;
            --text-lg: 16px;
            --text-xl: 18px;
            --text-2xl: 20px;
            --text-3xl: 24px;
            --text-4xl: 28px;
            --text-5xl: 32px;
            --text-6xl: 40px;
            --text-7xl: 48px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: #ffffff;
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* ===== 导航栏 ===== */
        .navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.88);backdrop-filter:blur(20px) saturate(1.2);-webkit-backdrop-filter:blur(20px) saturate(1.2);border-bottom:1px solid rgba(107,123,40,0.06);box-shadow:0 1px 30px rgba(0,0,0,0.03);transition:all .4s cubic-bezier(.4,0,.2,1)}
        .navbar.scrolled{background:rgba(255,255,255,0.96);box-shadow:0 4px 40px rgba(0,0,0,0.06);border-bottom-color:rgba(107,123,40,0.10)}
        .navbar-inner{max-width:1280px;margin:0 auto;padding:12px 40px;display:flex;align-items:center;justify-content:space-between;min-height:76px;transition:min-height .4s}
        .navbar.scrolled .navbar-inner{min-height:64px;padding:8px 40px}
        .navbar-logo{display:flex;align-items:center;gap:0;text-decoration:none}
        .navbar-logo img{height:44px;width:auto;display:block;transition:height .4s}
        .navbar.scrolled .navbar-logo img{height:38px}
        .navbar-logo-divider{width:1px;height:28px;background:linear-gradient(180deg,transparent 0%,var(--gold) 50%,transparent 100%);margin:0 16px;opacity:.6}
.navbar-logo-text{font-size:20px !important;font-weight:900 !important;color:var(--secondary) !important;line-height:1.1 !important;letter-spacing:1px !important}
.navbar-logo-text .brand-name{display:block;font-size:20px !important;font-weight:900 !important;line-height:1.1 !important}
.navbar-logo-text .brand-sub{display:block;font-family:Arial,Helvetica,sans-serif !important;font-size:10px !important;font-weight:700 !important;line-height:1.1 !important;letter-spacing:1.5px !important;margin-top:3px;text-transform:uppercase}
        .navbar-nav{display:flex;gap:20px;align-items:center;list-style:none;margin:0;padding:0}
        .navbar-nav li{list-style:none}
        .navbar-nav a{white-space:nowrap !important;font-size:15px !important;font-weight:600 !important;color:var(--text) !important;text-decoration:none !important;transition:color .3s !important;position:relative !important;padding:6px 2px !important;letter-spacing:.3px !important;font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif !important;}
        .navbar-nav a::after{content:'';position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:0;height:2.5px;background:linear-gradient(90deg,transparent,var(--gold),var(--gold-dark),var(--gold),transparent);border-radius:2px;transition:width .35s cubic-bezier(.4,0,.2,1);opacity:.8}
        .navbar-nav a:hover{color:var(--primary)}
        .navbar-nav a:hover::after{width:100%}
        .navbar-nav a.active{color:var(--primary)}
        .navbar-nav a.active::after{width:100%}
        .navbar-phone{display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:10px 22px;border-radius:50px;font-size:15px;font-weight:700;text-decoration:none;box-shadow:0 4px 20px rgba(107,123,40,0.25);transition:all .3s;margin-left:20px}
        .navbar-phone:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(107,123,40,0.32)}
        .navbar-phone svg{width:18px;height:18px}
        /* 移动端汉堡菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            width: 44px;
            height: 44px;
            position: relative;
            cursor: pointer;
            z-index: 1001;
            margin-left: auto;
        }
        .mobile-menu-btn span {
            display: block;
            width: 28px;
            height: 2px;
            background: var(--text);
            position: absolute;
            left: 8px;
            transition: all 0.3s ease;
            border-radius: 2px;
        }
        .mobile-menu-btn span:nth-child(1) { top: 11px; }
        .mobile-menu-btn span:nth-child(2) { top: 50%; transform: translateY(-50%); }
        .mobile-menu-btn span:nth-child(3) { bottom: 11px; }
        .mobile-menu-btn.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
        .mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
        .mobile-menu-btn.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

        @media(max-width:900px){
            .mobile-menu-btn { display: block; }
            .navbar-phone { display: none; }
            .navbar-inner { padding: 12px 20px; }
            .navbar.scrolled .navbar-inner { padding: 8px 20px; }
            
            .navbar-nav {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%; /* 紧贴导航栏底部 */
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 24px 20px;
                gap: 20px;
                box-shadow: 0 10px 30px rgba(0,0,0,0.08);
                
                visibility: hidden;
                opacity: 0;
                transform: translateY(-15px);
                transition: all 0.3s ease;
                z-index: 1001;
                pointer-events: none;
            }
            .navbar.scrolled .navbar-nav { top: 100%; }
            .navbar-nav.active {
                visibility: visible;
                opacity: 1;
                transform: translateY(0);
                pointer-events: auto;
                z-index: 1001;
            }
            .navbar-nav a { 
                font-size: 16px; 
                width: 100%; 
                text-align: center; 
                display: block; 
                padding: 10px 0;
            }
            .navbar-nav a::after { display: none; }
        }

        /* ===== Banner 全新设计 - 纯渐变+CSS装饰 无割裂感 ===== */
        .hero-carousel {
            position: relative;
            height: 560px;
            overflow: hidden;
            margin-top: 70px;
            background: var(--secondary-dark);
        }
        .hero-slide {
            position: absolute;
            inset: 0;
            opacity: 0;
            transition: opacity .35s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-slide.active { opacity: 1; }

        /* Banner背景基底层 */
        .hero-bg-layer {
            position: absolute;
            inset: 0;
            z-index: 1;
            overflow: hidden;
        }
        /* 实景底图 - 正常亮度，铺底 */
        .hero-bg-photo {
            position: absolute;
            inset: -5%;
            width: 110%;
            height: 110%;
            object-fit: cover;
            object-position: center 55%;
            filter: brightness(0.72) contrast(1.05);
            z-index: 1;
        }
        .bg-photo-slide { opacity: 0; transition: opacity .35s ease-in-out; }
        .bg-photo-slide.active { opacity: 1; }
        /* 多层渐变融合 */
        .hero-bg-gradient {
            position: absolute;
            inset: 0;
            z-index: 2;
            background:
                /* 中央文字保护区 */
                radial-gradient(ellipse 70% 60% at 50% 50%, rgba(10,20,5,0.55) 0%, rgba(10,20,5,0.3) 50%, transparent 80%),
                /* 顶部暗角 */
                linear-gradient(180deg, rgba(10,26,5,0.9) 0%, rgba(10,26,5,0.3) 35%, transparent 60%),
                /* 底部暗角 */
                linear-gradient(0deg, rgba(10,26,5,0.85) 0%, rgba(10,26,5,0.2) 40%, transparent 60%),
                /* 左侧暗角 */
                linear-gradient(90deg, rgba(10,26,5,0.9) 0%, rgba(10,26,5,0.2) 35%, transparent 60%),
                /* 右侧暗角 */
                linear-gradient(270deg, rgba(10,26,5,0.8) 0%, rgba(10,26,5,0.1) 30%, transparent 55%);
        }
        /* 网格装饰 */
        .hero-bg-grid {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
        }
        /* 声波可视化线条 */
        .hero-soundwave {
            position: absolute;
            bottom: 0;
            left: 0; right: 0;
            height: 120px;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            gap: 3px;
            padding: 0 10%;
            z-index: 2;
            opacity: 0.15;
        }
        .hero-soundwave-bar {
            flex: 1;
            max-width: 4px;
            background: linear-gradient(180deg, var(--gold), transparent);
            border-radius: 2px 2px 0 0;
            animation: soundwave 1.2s ease-in-out infinite;
        }
        .hero-soundwave-bar:nth-child(odd) { animation-delay: -0.6s; height: 30%; }
        .hero-soundwave-bar:nth-child(3n) { height: 60%; }
        .hero-soundwave-bar:nth-child(5n) { height: 45%; }
        .hero-soundwave-bar:nth-child(7n) { height: 80%; }
        @keyframes soundwave {
            0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
            50% { opacity: 1; transform: scaleY(1.2); }
        }
        /* 顶部光效 */
        .hero-light-top {
            position: absolute;
            top: -200px;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(201,168,76,0.08) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        /* 右侧装饰圆环 */
        .hero-ring {
            position: absolute;
            right: 8%;
            top: 50%;
            transform: translateY(-50%);
            width: 320px;
            height: 320px;
            border: 1px solid rgba(201,168,76,0.1);
            border-radius: 50%;
            z-index: 2;
            pointer-events: none;
        }
        .hero-ring::before {
            content: '';
            position: absolute;
            inset: 30px;
            border: 1px solid rgba(201,168,76,0.08);
            border-radius: 50%;
        }
        .hero-ring::after {
            content: '';
            position: absolute;
            inset: 60px;
            border: 1px solid rgba(201,168,76,0.06);
            border-radius: 50%;
        }
        /* 角落几何装饰 */
        .hero-geo {
            position: absolute;
            width: 100px; height: 100px;
            border: 1px solid rgba(201,168,76,0.08);
            z-index: 2;
            pointer-events: none;
        }
        .hero-geo-1 {
            top: 40px; left: 40px;
            transform: rotate(45deg);
        }
        .hero-geo-2 {
            bottom: 60px; right: 60px;
            transform: rotate(15deg);
            width: 60px; height: 60px;
        }
        /* 浮动粒子 */
        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 2;
            pointer-events: none;
            overflow: hidden;
        }
        .hero-particle {
            position: absolute;
            width: 3px; height: 3px;
            background: rgba(201,168,76,0.4);
            border-radius: 50%;
            animation: float-up linear infinite;
        }
        @keyframes float-up {
            0% { transform: translateY(100vh) scale(0); opacity: 0; }
            10% { opacity: 1; transform: translateY(90vh) scale(1); }
            90% { opacity: 1; }
            100% { transform: translateY(-10vh) scale(0.5); opacity: 0; }
        }

        .hero-slide-content {
            position: relative;
            z-index: 10;
            max-width: 700px;
            text-align: center;
            padding: 0 24px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,168,76,0.1);
            border: 1px solid rgba(201,168,76,0.2);
            color: var(--gold-light);
            padding: 6px 20px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero-tag-dot {
            width: 6px; height: 6px;
            background: var(--gold);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        .hero-slide h1 {
            font-size: 52px;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 0;
            letter-spacing: -0.5px;
        }
        .hero-slide h1 .highlight {
            color: var(--gold);
            position: relative;
            display: block;
            margin-top: 8px;
            font-size: 40px;
        }
        .hero-slide h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px; left: 0; right: 0;
            height: 14px;
            background: linear-gradient(90deg, transparent, rgba(201,168,76,0.25), transparent);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-slide h1 .sub-line {
            display: block;
            font-size: 22px;
            font-weight: 500;
            color: rgba(255,255,255,0.6);
            margin-top: 12px;
            letter-spacing: 2px;
        }
        .hero-slide p {
            font-size: 16px;
            color: rgba(255,255,255,0.6);
            margin-top: 24px;
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            padding-top: 16px;
            border-top: 1px solid rgba(201,168,76,0.15);
        }
        .hero-cta-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: #fff;
            padding: 16px 40px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 8px 30px rgba(201,168,76,0.3);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        .hero-cta-main::before {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }
        .hero-cta-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(201,168,76,0.4);
        }
        .hero-cta-main:hover::before {
            left: 100%;
        }
        .hero-dots {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
            z-index: 10;
        }
        .hero-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
            background: rgba(255,255,255,0.2);
            cursor: pointer;
            transition: all 0.3s;
            border: 1px solid rgba(255,255,255,0.15);
        }
        .hero-dot.active {
            background: var(--gold);
            width: 24px;
            border-radius: 4px;
            border-color: var(--gold);
        }

        /* ===== 数据统计条 ===== */
        .stats-strip {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
            padding: 28px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-strip::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('../images/youchuan-product-main.png') center center / cover no-repeat;
            opacity: 0.03;
        }
        .stats-strip-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
            gap: 0;
            padding: 0 24px;
            position: relative;
        }
        .stats-strip-item {
            flex: 1;
            text-align: center;
            padding: 0 16px;
            position: relative;
        }
        .stats-strip-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 20%;
            bottom: 20%;
            width: 1px;
            background: rgba(255,255,255,0.08);
        }
        .stats-strip-num {
            font-size: 30px;
            font-weight: 900;
            color: var(--gold);
            line-height: 1;
            display: flex;
            align-items: baseline;
            justify-content: center;
            gap: 2px;
        }
        .stats-strip-num > span:not(.count-num) {
            font-size: 13px;
            font-weight: 600;
        }
        .stats-strip-num .count-num {
            font-size: inherit;
            font-weight: inherit;
            color: inherit;
        }
        .stats-strip-label {
            font-size: 12px;
            color: rgba(255,255,255,0.5);
            margin-top: 8px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 72px 24px;
            position: relative;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
            position: relative;
            z-index: 1;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(107,123,40,0.1);
            color: var(--primary-dark);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .section-tag::before {
            content: '';
            width: 6px; height: 6px;
            background: var(--gold);
            border-radius: 50%;
        }
        .section-title {
            font-size: var(--text-4xl);
            font-weight: 900;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.2;
            position: relative;
            z-index: 1;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
            font-weight: 500;
            position: relative;
            z-index: 1;
        }
        .section-tag {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            padding: 6px 18px;
            border-radius: 16px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 34px;
            font-weight: 900;
            color: var(--text);
            margin: 0 0 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
            font-weight: 500;
        }

        .bg-light { background: var(--light-bg); }
        .bg-cream { background: linear-gradient(135deg, var(--cream), #F0EBE0); }
        .bg-dark {
            background: var(--secondary-dark);
            position: relative;
            overflow: hidden;
        }
        .bg-dark::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('../images/soundproof-room-2.png') center center / cover no-repeat;
            opacity: 0.13;
            z-index: 0;
            pointer-events: none;
        }
        .bg-dark::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, transparent 40%, var(--secondary-dark) 80%);
            z-index: 0;
            pointer-events: none;
        }
        .bg-dark .section-tag { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.8); }
        .bg-dark .section-title { color: #fff; }
        .bg-dark .section-desc { color: rgba(255,255,255,0.5); }

        /* ===== 产品中心 ===== */
        .product-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: var(--light-bg);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.35s, box-shadow 0.35s;
            position: relative;
            border: 1px solid rgba(107,123,40,0.06);
            display: flex;
            flex-direction: column;
        }
        .product-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
            opacity: 0;
            transition: opacity 0.3s;
            z-index: 2;
        }
        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .product-card:hover::before { opacity: 1; }
        .product-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .product-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.2) 100%);
            z-index: 1;
        }
        .product-card-img img {
            width: 100%; height: 100%;
            object-fit: cover;
            transition: transform 0.7s;
        }
        .product-card:hover .product-card-img img { transform: scale(1.1); }
        .product-card-body {
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .product-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .product-card-tag::before {
            content: '';
            width: 4px;
            height: 4px;
            background: var(--primary);
            border-radius: 50%;
        }
        .product-card-body h3 {
            font-size: 20px;
            font-weight: 900;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .product-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .product-card-specs {
            display: flex;
            gap: 16px;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid rgba(107,123,40,0.08);
        }
        .product-card-spec {
            font-size: 13px;
            color: var(--text-light);
        }
        .product-card-spec strong {
            display: block;
            font-size: 18px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 2px;
        }
        .product-card-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .product-card-specs {
            display: flex;
            gap: 16px;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid rgba(107,123,40,0.08);
        }
        .product-card-spec {
            font-size: 12px;
            color: var(--text-light);
        }
        .product-card-spec strong {
            color: var(--gold-dark);
            font-weight: 700;
        }

        /* ===== 关于我们 ===== */
        .about-bg {
            position: relative;
        }
        .about-bg::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: url('../images/soundproof-room-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.09;
            pointer-events: none;
        }
        .about-bg::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(180deg, rgba(245,243,235,0.35) 0%, rgba(237,233,223,0.5) 50%, rgba(245,243,235,0.35) 100%);
            pointer-events: none;
        }
        .about-bg > * {
            position: relative;
            z-index: 1;
        }
        .about-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }
        .about-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .about-img img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            display: block;
        }
        .about-text h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
        }
        .about-text p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .about-meta {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
            padding: 16px;
            background: var(--light-bg);
            border-radius: var(--radius);
            border: 1px solid rgba(107,123,40,0.06);
        }
        .about-meta-item {
            font-size: 12px;
            color: var(--text-muted);
        }
        .about-meta-item strong {
            color: var(--text);
            font-weight: 700;
        }
        .about-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(107,123,40,0.08);
        }
        .about-stat-item {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 12px;
            background: rgba(107,123,40,0.05);
            border-radius: 8px;
            font-size: 13px;
        }
        .about-stat-item .num {
            font-size: 16px;
            font-weight: 800;
            color: var(--primary-dark);
        }
        .about-stat-item .label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 核心优势 ===== */
        .advantages-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }
        .adv-card {
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.08);
            transition: transform 0.35s, border-color 0.35s, background 0.35s;
            position: relative;
            overflow: hidden;
        }
        .adv-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }
        .adv-card:hover {
            transform: translateY(-6px);
            background: rgba(255,255,255,0.1);
            border-color: rgba(201,168,76,0.25);
        }
        .adv-card:hover::before { transform: scaleX(1); }
        .adv-icon {
            width: 56px; height: 56px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, rgba(201,168,76,0.15), rgba(201,168,76,0.05));
            border: 1px solid rgba(201,168,76,0.2);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .adv-icon svg { width: 28px; height: 28px; color: var(--gold); }
        .adv-card h4 {
            font-size: 20px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .adv-card p {
            font-size: 13px;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            font-weight: 500;
        }

        /* ===== 技术参数 ===== */
        .tech-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .tech-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .tech-img img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }
        .tech-content h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            text-align: center;
        }
        .tech-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
        }
        .tech-table th {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-size: 13px;
            font-weight: 700;
        }
        .tech-table th:first-child { border-radius: 8px 0 0 0; }
        .tech-table th:last-child { border-radius: 0 8px 0 0; }
        .tech-table td {
            padding: 12px 14px;
            font-size: 13px;
            color: var(--text-light);
            border-bottom: 1px solid rgba(107,123,40,0.08);
        }
        .tech-table tr:nth-child(even) { background: var(--light-bg); }
        .tech-layers {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 16px;
        }
        .tech-layer {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 14px;
            background: rgba(255,255,255,0.5);
            border-radius: 8px;
            font-size: 13px;
            border: none;
        }
        .tech-layer:nth-child(even) { background: rgba(248,250,243,0.6); }
        .tech-layer-num {
            width: 24px; height: 24px;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }
        .tech-layer strong {
            color: var(--text);
            font-weight: 700;
        }

        /* ===== 技术参数-扩展样式 ===== */
        .tech-detail {
            max-width: 1100px;
            margin: 0 auto;
        }
        .tech-spec-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .tech-spec-card {
            background: var(--light-bg);
            border-radius: 14px;
            padding: 24px 20px;
            text-align: center;
            border: 1px solid rgba(107,123,40,0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .tech-spec-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-dark));
        }
        .tech-spec-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(107,123,40,0.12);
            border-color: var(--gold);
        }
        .tech-spec-card .spec-icon {
            width: 44px; height: 44px;
            margin: 0 auto 12px;
            background: linear-gradient(135deg, rgba(107,123,40,0.08), rgba(212,166,74,0.12));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .tech-spec-card h4 {
            font-size: 16px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 6px;
        }
        .tech-spec-card .spec-thickness {
            font-size: 22px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .tech-spec-card .spec-noise {
            font-size: 13px;
            color: var(--gold-dark);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tech-spec-card .spec-use {
            font-size: 12px;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 五层结构详细展开 */
        .tech-layers-detail {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin: 32px 0 40px;
            background: var(--light-bg);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(107,123,40,0.08);
        }
        .tech-layer-row {
            display: grid;
            grid-template-columns: 48px 1fr auto;
            gap: 16px;
            align-items: center;
            padding: 16px 20px;
            background: var(--light-bg);
            border-bottom: 1px solid rgba(107,123,40,0.06);
            transition: all 0.3s ease;
        }
        .tech-layer-row:last-child { border-bottom: none; }
        .tech-layer-row:nth-child(odd) { background: var(--cream); }
        .tech-layer-row:hover {
            background: #fff;
            transform: translateX(4px);
        }
        .tech-layer-row .layer-badge {
            width: 32px; height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }
        .tech-layer-row .layer-info h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 4px;
        }
        .tech-layer-row .layer-info p {
            font-size: 12px;
            color: var(--text-light);
            line-height: 1.5;
        }
        .tech-layer-row .layer-params {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: flex-end;
        }
        .tech-layer-row .layer-param {
            padding: 4px 10px;
            background: rgba(107,123,40,0.06);
            border-radius: 6px;
            font-size: 11px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }

        /* 五大工艺 - 白色卡片平铺 */
        .tech-craft-grid {
            display: flex;
            gap: 20px;
            justify-content: space-between;
            margin: 32px 0 40px;
        }
        .tech-craft-item {
            flex: 1;
            text-align: center;
            padding: 24px 16px;
            background: var(--light-bg);
            border-radius: 14px;
            border: 1px solid rgba(107,123,40,0.08);
            transition: all 0.3s ease;
        }
        .tech-craft-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(107,123,40,0.1);
            border-color: var(--gold);
            background: #fff;
        }
        .tech-craft-item .craft-num {
            width: 32px; height: 32px;
            margin: 0 auto 10px;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 900;
            color: #fff;
        }
        .tech-craft-item h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 6px;
        }
        .tech-craft-item p {
            font-size: 12px;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 设备清单 - 三列分类卡片 */
        .tech-equip-section {
            display: flex;
            gap: 20px;
            justify-content: space-between;
            margin: 32px 0 40px;
        }
        .tech-equip-category {
            flex: 1;
            background: var(--light-bg);
            border-radius: 14px;
            padding: 24px 20px;
            border: 1px solid rgba(107,123,40,0.08);
        }
        .tech-equip-category-title {
            font-size: 15px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gold);
            text-align: center;
        }
        .tech-equip-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .tech-equip-list-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid rgba(107,123,40,0.06);
        }
        .tech-equip-list-item:last-child {
            border-bottom: none;
        }
        .tech-equip-list-item .equip-name {
            font-size: 13px;
            color: var(--text-light);
        }
        .tech-equip-list-item .equip-qty {
            font-size: 13px;
            font-weight: 800;
            color: var(--primary);
        }

        /* 设备清单平铺标签（兼容旧HTML） */
        .tech-equip-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            padding: 24px;
            background: var(--light-bg);
            border-radius: 16px;
            border: 1px solid rgba(107,123,40,0.08);
        }
        .tech-equip-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: var(--cream);
            border-radius: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            border: 1px solid rgba(107,123,40,0.06);
        }
        .tech-equip-item .equip-dot {
            width: 8px; height: 8px;
            background: var(--gold);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .tech-layer-row:hover {
            border-color: var(--gold);
            box-shadow: 0 4px 16px rgba(212,166,74,0.1);
            transform: translateX(4px);
        }
        .tech-layer-row .layer-badge {
            width: 40px; height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }
        .tech-layer-row .layer-info h4 {
            font-size: 15px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 2px;
        }
        .tech-layer-row .layer-info p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.5;
        }
        .tech-layer-row .layer-params {
            display: flex;
            gap: 8px;
            flex-shrink: 0;
        }
        .tech-layer-row .layer-param {
            padding: 4px 10px;
            background: rgba(107,123,40,0.06);
            border-radius: 6px;
            font-size: 11px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
        }

        /* 工艺展示 */
        .tech-craft-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .tech-craft-item {
            text-align: center;
            padding: 20px 12px;
            background: rgba(255,255,255,0.5);
            border-radius: 12px;
            border: 1px solid rgba(107,123,40,0.08);
            transition: all 0.3s ease;
        }
        .tech-craft-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(107,123,40,0.1);
            border-color: var(--primary);
        }
        .tech-craft-item .craft-num {
            width: 32px; height: 32px;
            margin: 0 auto 10px;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 900;
            color: #fff;
        }
        .tech-craft-item h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 6px;
        }
        .tech-craft-item p {
            font-size: 12px;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 设备清单 */
        .tech-equip-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            padding: 24px;
            background: linear-gradient(135deg, rgba(107,123,40,0.04), rgba(212,166,74,0.06));
            border-radius: 16px;
        }
        .tech-equip-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background: rgba(255,255,255,0.7);
            border-radius: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            border: 1px solid rgba(107,123,40,0.08);
        }
        .tech-equip-item .equip-dot {
            width: 8px; height: 8px;
            background: var(--gold);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .tech-equip-item .equip-qty {
            color: var(--primary);
            font-weight: 800;
        }

        /* 子标题 */
        .tech-sub-title {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            text-align: center;
        }
        .tech-sub-title::before {
            content: '';
            width: 4px;
            height: 20px;
            background: linear-gradient(180deg, var(--primary), var(--gold));
            border-radius: 2px;
        }

        /* ===== 服务流程 ===== */
        .process-grid {
            max-width: 1140px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .process-card {
            text-align: center;
            padding: 28px 16px 24px;
            background: var(--light-bg);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(107,123,40,0.08);
            box-shadow: 0 2px 12px rgba(107,123,40,0.06);
            transition: all 0.3s ease;
        }
        .process-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(107,123,40,0.12);
            border-color: var(--gold);
        }
        .process-card .process-step {
            width: 40px; height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            margin: 0 auto 14px;
        }
        .process-card h4 {
            font-size: 15px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }
        .process-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }
        /* ===== 工程案例 ===== */
        .case-section-bg {
            background: linear-gradient(180deg, var(--light-bg) 0%, #eef4e6 50%, var(--light-bg) 100%);
            position: relative;
            overflow: hidden;
        }
        .case-section-bg::before {
            content: '';
            position: absolute;
            top: -150px; left: -150px;
            width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(201,168,76,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .case-section-bg::after {
            content: '';
            position: absolute;
            bottom: -200px; right: -100px;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(107,123,40,0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .case-grid {
            max-width: 1140px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
            z-index: 1;
        }
        .case-card {
            background: var(--light-bg);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(107,123,40,0.08);
            transition: transform 0.4s cubic-bezier(0.22,1,0.36,1), box-shadow 0.4s;
            position: relative;
            border: 1px solid rgba(107,123,40,0.06);
            display: flex;
            flex-direction: column;
        }
        .case-card::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
            opacity: 0;
            transition: opacity 0.4s;
            z-index: 3;
        }
        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(107,123,40,0.18);
        }
        .case-card:hover::after { opacity: 1; }
        .case-card-img {
            height: 240px;
            overflow: hidden;
            position: relative;
        }
        .case-card-img::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,53,13,0.3) 0%, transparent 25%, transparent 60%, rgba(26,53,13,0.5) 100%);
            z-index: 1;
        }
        .case-card-img img {
            width: 100%; height: 100%;
            object-fit: cover;
            transition: transform 0.7s cubic-bezier(0.22,1,0.36,1);
        }
        .case-card:hover .case-card-img img { transform: scale(1.1); }
        .case-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 10px;
            font-size: 12px;
            font-weight: 700;
            box-shadow: 0 2px 12px rgba(0,0,0,0.1);
            letter-spacing: 0.5px;
        }
        .case-card-badge::before {
            content: '\1F4CD';
            margin-right: 4px;
            font-size: 11px;
        }
        .case-card-icon {
            position: absolute;
            bottom: 14px;
            right: 14px;
            z-index: 2;
            width: 36px;
            height: 36px;
            background: rgba(201,168,76,0.9);
            backdrop-filter: blur(8px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(201,168,76,0.3);
        }
        .case-card-icon svg {
            width: 18px; height: 18px;
            color: #fff;
        }
        .case-card-body {
            padding: 24px 22px 22px;
            position: relative;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .case-card-body::before {
            content: '';
            position: absolute;
            left: 22px;
            top: 0;
            width: 32px;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-light));
            border-radius: 2px;
        }
        .case-card-body h4 {
            font-size: 18px;
            font-weight: 900;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .case-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            flex: 1;
        }
        .case-card-result {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            padding-left: 10px;
            border-left: 2px solid var(--primary);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
        }
        .case-card-result::before {
            content: '\2714';
            color: var(--primary);
            font-size: 11px;
        }

        /* ===== 底部联系 ===== */
        .contact-section {
            background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary) 100%);
            padding: 80px 24px 60px;
            position: relative;
            overflow: hidden;
        }
        .contact-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .contact-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.2fr 1fr 0.8fr;
            gap: 64px;
            position: relative;
        }
        .contact-col {
            position: relative;
        }
        .contact-col:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 20%;
            right: -32px;
            width: 1px;
            height: 60%;
            background: rgba(255,255,255,0.08);
        }
        .contact-col h4 {
            font-size: 18px;
            font-weight: 900;
            color: var(--gold);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .contact-col h4::before {
            content: '';
            width: 4px;
            height: 18px;
            background: linear-gradient(180deg, var(--gold), var(--gold-dark));
            border-radius: 2px;
        }
        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
        }
        .contact-info-item .info-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--gold);
            opacity: 0.7;
        }
        .contact-info-item .info-text {
            flex: 1;
        }
        .contact-info-item .info-text strong {
            color: rgba(255,255,255,0.9);
            font-weight: 700;
        }
        .contact-phone-main {
            font-size: 32px;
            font-weight: 900;
            color: var(--gold);
            text-decoration: none;
            display: block;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .contact-phone-main:hover { color: var(--gold-light); }
        .contact-qrcode-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }
        .contact-qrcode {
            width: 110px;
            background: transparent;
            border: none;
            border-radius: 0;
            padding: 0;
            box-shadow: none;
            transition: transform 0.3s ease;
            align-self: center;
            margin: 8px auto;
        }
        .contact-qrcode:hover {
            transform: scale(1.05);
        }
        .contact-qrcode img {
            width: 100%;
            display: block;
            background: rgba(255,255,255,0.95);
            padding: 6px;
            border-radius: 8px;
        }
        .contact-qrcode-hint {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            text-align: center;
            line-height: 1.6;
        }

        .footer {
            background: var(--secondary-dark);
            padding: 24px 24px;
            text-align: center;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-bottom: 10px;
        }
        .footer-logo img {
            height: 32px;
            opacity: 0.8;
        }
        .footer p {
            font-size: 12px;
            color: rgba(255,255,255,0.3);
        }

        /* ===== 悬浮CTA ===== */
        .float-cta{position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:999;display:flex;flex-direction:column;gap:6px}
        .float-cta-item{display:flex;align-items:center;justify-content:flex-end;position:relative;width:fit-content}
        .float-cta-label{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(10px);background:#fff;border-radius:10px 0 0 10px;padding:8px 14px;box-shadow:0 4px 20px rgba(0,0,0,.12);white-space:nowrap;opacity:0;visibility:hidden;transition:all .3s;z-index:1}
        .float-cta-item:hover .float-cta-label{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
        .float-cta-btn{width:52px !important;height:52px !important;border-radius:50% !important;display:flex !important;align-items:center !important;justify-content:center !important;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.15);border:none;position:relative;z-index:2;flex-shrink:0}
        .float-cta-btn svg{width:22px !important;height:22px !important}
        .float-cta-phone{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
        .float-cta-wechat{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#fff}
        .float-cta-item:hover .float-cta-btn{transform:scale(1.1);box-shadow:0 8px 28px rgba(0,0,0,.22)}
        .float-cta-wechat-box{width:160px;padding:12px;text-align:center}
        .float-cta-wechat-box img{width:100%;border-radius:8px;margin-bottom:6px;display:block}
        .float-cta-wechat-box .label-title{margin-bottom:6px}
        @media(max-width:768px){.float-cta{display:none}}

        /* ===== 响应式 ===== */
        @media (max-width: 900px) {
            /* padding and display none moved to main 900px block above */
            .hero-carousel { height: 460px; margin-top: 62px; }
            .hero-slide h1 { font-size: 28px; }
            .hero-slide p { font-size: 14px; }
            .hero-slide .hero-slide-content {
                padding: 0 24px;
                max-width: 100%;
                text-align: center;
            }
            .hero-ring { width: 200px; height: 200px; right: -60px; }
            .hero-geo { display: none; }
            .section { padding: 48px 20px; }
            .section-title { font-size: 24px; }
            .product-grid { grid-template-columns: 1fr 1fr; }
            .advantages-grid { grid-template-columns: 1fr 1fr; }
            .process-grid { flex-wrap: wrap; }
            .process-grid::before { display: none; }
            .process-card { flex: 1 1 45%; border-right: none; border-bottom: 1px solid rgba(107,123,40,0.06); }
            .process-card:nth-child(2n) { border-right: 1px solid rgba(107,123,40,0.06); }
            .process-card:nth-child(2n):last-child { border-right: none; }
            .process-card:nth-last-child(-n+2) { border-bottom: none; }
            .process-card::after { display: none; }
            .tech-craft-grid { flex-wrap: wrap; }
            .tech-craft-grid::before { display: none; }
            .tech-craft-item { flex: 1 1 30%; border-right: none; border-bottom: 1px solid rgba(107,123,40,0.06); }
            .tech-craft-item:nth-child(3n) { border-right: 1px solid rgba(107,123,40,0.06); }
            .tech-craft-item:nth-child(3n):last-child { border-right: none; }
            .tech-craft-item:nth-last-child(-n+3) { border-bottom: none; }
            .tech-equip-section { flex-wrap: wrap; }
            .tech-equip-category { flex: 1 1 45%; border-right: none; border-bottom: 1px solid rgba(107,123,40,0.06); }
            .tech-equip-category:nth-child(2n) { border-right: 1px solid rgba(107,123,40,0.06); }
            .tech-equip-category:nth-child(2n):last-child { border-right: none; }
            .tech-equip-category:nth-last-child(-n+2) { border-bottom: none; }
            .case-grid { grid-template-columns: 1fr 1fr; }
            .case-card-img { height: 200px; }
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .tech-grid { grid-template-columns: 1fr; gap: 32px; }
            .tech-spec-cards { grid-template-columns: 1fr 1fr; }
            .tech-craft-grid { grid-template-columns: repeat(3, 1fr); }
            .tech-layer-row { grid-template-columns: 48px 1fr; }
            .tech-layer-row .layer-params { grid-column: 1 / -1; margin-top: 6px; justify-content: flex-start; }
            .process-grid { grid-template-columns: repeat(3, 1fr); }
            .contact-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .contact-col:not(:last-child)::after { display: none; }
            .contact-col h4 { justify-content: center; }
            .contact-info-item { justify-content: center; }
            .contact-qrcode-wrap { align-items: center; }
            .stats-strip-grid { flex-wrap: wrap; gap: 16px; }
            .stats-strip-item { flex: 1 1 30%; }
            .stats-strip-item::after { display: none; }
            .about-stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
        }
        @media (max-width: 500px) {
            .hero-carousel { height: 400px; }
            .hero-slide h1 { font-size: 22px; }
            .hero-slide p { font-size: 13px; }
            .hero-slide .hero-slide-content {
                padding: 0 20px;
                text-align: center;
            }
            .hero-ring { display: none; }
            .hero-soundwave { height: 60px; }
            .product-grid { grid-template-columns: 1fr; }
            .advantages-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr 1fr; }
            .process-card { border-right: none; border-bottom: 1px solid rgba(107,123,40,0.06); }
            .process-card:nth-child(2n) { border-right: 1px solid rgba(107,123,40,0.06); }
            .process-card:nth-child(2n):last-child { border-right: none; }
            .process-card:nth-last-child(-n+2) { border-bottom: none; }
            .tech-craft-grid { grid-template-columns: 1fr 1fr; }
            .tech-craft-item { border-right: none; border-bottom: 1px solid rgba(107,123,40,0.06); }
            .tech-craft-item:nth-child(2n) { border-right: 1px solid rgba(107,123,40,0.06); }
            .tech-craft-item:nth-child(2n):last-child { border-right: none; }
            .tech-craft-item:nth-last-child(-n+2) { border-bottom: none; }
            .tech-equip-strip { padding: 20px 16px; }
            .tech-layer-row { grid-template-columns: 44px 1fr; gap: 12px; }
            .tech-layer-row .layer-params { grid-column: 1 / -1; margin-top: 8px; justify-content: flex-start; }
            .tech-equip-category:last-child { border-bottom: none; }
            .navbar-logo-text { display: none; }
            .navbar-logo-divider { display: none; }
        }

        /* 动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--light-bg); }
        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, var(--primary), var(--primary-dark));
            border-radius: 3px;
        }


.breadcrumb-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #888;
}

.breadcrumb-wrap a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #555;
  text-decoration: none;
  transition: color 0.3s;
}

.breadcrumb-wrap a:hover {
  color: var(--primary-gold, #cfa968);
}

.breadcrumb-wrap a svg {
  width: 16px;
  height: 16px;
}

.breadcrumb-wrap > svg {
  width: 14px;
  height: 14px;
  color: #ccc;
}

.breadcrumb-wrap span {
  color: #222;
  font-weight: 500;
}



/* ===== 全局内页 Banner (以“关于我们”为基准) ===== */
.hero {
  min-height: 480px; position: relative; overflow: hidden;
  background: url('../images/banner-soundproof-v2.png') center/cover no-repeat;
  display: flex; align-items: center; padding-top: 96px;
}
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(105deg, var(--gray-900, #1a250e) 0%, rgba(26, 37, 14, 0.92) 45%, rgba(26, 37, 14, 0.6) 62%, rgba(26, 37, 14, 0.15) 78%, transparent 88%);
}
.hero::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background-image: radial-gradient(circle at 72% 48%, var(--gold-soft-8, rgba(201,168,76,0.08)) 0%, transparent 55%);
}
.hero-inner { position: relative; z-index: 2; padding: 60px 0; width: 100%; }
.hero-content { max-width: 640px; margin: 0 auto; text-align: center; }
.hero-eyebrow {
  font-size: 12px; font-weight: var(--fw-bold, 700); color: var(--gold, #C9A84C);
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px; justify-content: center;
}
.hero-eyebrow::before { content: ''; width: 24px; height: 2px; background: var(--gold, #C9A84C); }
.hero-content h1 { font-size: 44px; font-weight: var(--fw-black, 800); color: var(--text-inverse, #ffffff); line-height: 1.15; margin-bottom: 16px; text-shadow: 0 2px 12px var(--black-70, rgba(0,0,0,0.7)); }
.hero-content h1 span { color: var(--gold, #C9A84C); }
.hero-desc { font-size: 15px; color: var(--white-70, rgba(255,255,255,0.7)); line-height: 1.7; margin-bottom: 28px; text-align: center; }
.hero-btns { display: flex; gap: 16px; justify-content: center; }



/* ===== Banner 按钮全局样式 ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-full, 9999px); font-size: 14px; font-weight: var(--fw-bold, 700); transition: all 0.3s var(--ease-out, cubic-bezier(0.4, 0, 0.2, 1)); text-decoration: none;}
.btn-gold { background: linear-gradient(135deg, var(--gold, #C9A84C), var(--gold-dark, #A88C3D)); color: var(--text-inverse, #fff); box-shadow: 0 2px 8px rgba(201,168,76,0.3); }
.btn-gold:hover { box-shadow: 0 4px 16px rgba(201,168,76,0.45); transform: translateY(-2px); color: var(--text-inverse, #fff); }
.btn-outline { background: transparent; color: var(--text-inverse, #fff); border: 2px solid var(--white-40, rgba(255,255,255,0.4)); }
.btn-outline:hover { border-color: var(--gold, #C9A84C); color: var(--gold, #C9A84C); background: var(--gold-soft-8, rgba(201,168,76,0.08)); }



/* ===== 全局悬浮面包屑 ===== */
.breadcrumb-nav {
  position: relative;
  z-index: 10;
  margin-top: -26px;
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}
.breadcrumb-wrap {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 10px 28px;
  border-radius: 100px;
  font-size: 13px;
  color: var(--gray-500, #71717a);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(255, 255, 255, 1);
}
.breadcrumb-wrap a {
  color: var(--gray-600, #52525b);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb-wrap a:hover {
  color: var(--gold-dark, #A88C3D);
}
.breadcrumb-wrap svg {
  width: 14px;
  height: 14px;
  color: var(--gray-300, #d4d4d8);
  flex-shrink: 0;
}
.breadcrumb-wrap span {
  color: var(--text, #18181b);
  font-weight: 600;
}



/* ===== 全局滚动动画 (fade-up) ===== */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .fade-up { opacity: 1; transform: none; transition: none; } }

.category-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 28px; margin-bottom: -16px; position: relative; z-index: 10; }
.product-category-nav{display:flex;align-items:center;justify-content:flex-start;gap:38px;width:100%;height:70px;padding:0 46px;margin:0 0 28px;position:relative;z-index:10;background:#fff;border-bottom:1px solid #edf0ea}
.product-category-nav a{position:relative;height:70px;display:flex;align-items:center;padding:0;color:#2c3e2d;text-decoration:none;font-size:16px;font-weight:700;white-space:nowrap}
.product-category-nav a::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:#c9a84c;transform:scaleX(0);transition:transform .25s ease}
.product-category-nav a:hover::after,.product-category-nav a.active::after{transform:scaleX(1)}
.filter-btn { display: inline-block; padding: 8px 24px; background: #fff; border: 1px solid rgba(107,123,40,0.2); color: var(--text); font-size: 14px; font-weight: 600; border-radius: 50px; text-decoration: none; transition: all .3s; }
.filter-btn:hover, .filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(107,123,40,0.2); }