* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Inter", "PingFang SC", "Microsoft Yahei", system-ui, sans-serif;
        }

        :root {
            --primary: #0ea5e9;
            --primary-deep: #0284c7;
            --accent: #6366f1;
            --bg-body: #f6f9fc;
            --bg-card: #ffffff;
            --bg-card-soft: #f8fafc;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0; 
            --border-light: #f1f5f9;
            --shadow-sm: 0 2px 8px rgba(15,23,42,0.04);
            --shadow-md: 0 8px 24px rgba(15,23,42,0.06);
            --radius-lg: 20px;
            --radius-xl: 26px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .text-gradient {
            background: linear-gradient(135deg, #0f172a 0%, #0ea5e9 45%, #6366f1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero {
            position: relative;
            min-height: 780px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('//ueeshop.ly200-cdn.com/u_file/UPBH/UPBH996/2606/19/photo/f0a194ed52.png') center/cover no-repeat;
            filter: brightness(1) saturate(1.2);
            z-index: 0;
        }

        .hero-mask {
            position: absolute;
            left: 0;
            top: 0;
            width: 52%;
            height: 100%;
            background: linear-gradient(90deg, rgba(8,14,26,0.98) 0%, rgba(8,14,26,0.75) 70%, transparent 100%);
            z-index: 1;
        }

        .hero-wrap {
            position: relative;
            z-index: 3;
            width: 100%;
        }
        .hero-content {
            max-width: 700px;
            text-align: left;
            margin-left: 0;
            padding-left: 0;
        }

        .hero .text-gradient {
            background: linear-gradient(135deg, #ffffff 0%, #7dd3fc 50%, #a5b4fc 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 9px 24px;
            border: 1px solid rgba(14,165,233,0.3);
            border-radius: 999px;
            font-size: 13px;
            color: #7dd3fc;
            letter-spacing: 1.6px;
            background: rgba(14,165,233,0.08);
            backdrop-filter: blur(10px);
            margin-bottom: 36px;
        }
        .hero-tag::before {
            content: '';
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #38bdf8;
        }

        .hero-title {
            font-size: 60px;
            font-weight: 700;
            line-height: 1.22;
            margin-bottom: 30px;
            letter-spacing: -0.6px;
        }
        .hero-desc {
            font-size: 18px;
            color: #cbd5e1;
            max-width: 640px;
            margin-bottom: 46px;
            line-height: 1.85;
        }
        .hero-btn-box {
            margin-bottom: 52px;
        }
        .hero-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 40px;
            background: linear-gradient(135deg, #0ea5e9, #6366f1);
            color: #fff;
            text-decoration: none;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 500;
            box-shadow: 0 10px 30px rgba(14,165,233,0.3);
            transition: opacity 0.2s ease;
        }
        .hero-btn:hover {
            opacity: 0.9;
        }
        .hero-data {
            display: flex;
            gap: 70px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .data-item .num {
            font-size: 44px;
            font-weight: 700;
            background: linear-gradient(135deg, #7dd3fc, #a5b4fc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 10px;
        }
        .data-item .label {
            font-size: 13px;
            color: #94a3b8;
            letter-spacing: 0.5px;
        }

        section {
            padding: 120px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 72px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--primary);
            padding: 6px 18px;
            background: rgba(14,165,233,0.06);
            border-radius: 99px;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .section-h2 {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .section-sub {
            max-width: 580px;
            margin: 0 auto;
            font-size: 15px;
            color: var(--text-muted);
        }

        .spec-wrap {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
        }
        .spec-main {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 52px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .spec-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .spec-main h3 {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 22px;
            margin-bottom: 32px;
        }
        .spec-main h3::before {
            content: '';
            width: 5px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 3px;
        }
        .spec-group {
            margin-bottom: 40px;
        }
        .spec-group h4 {
            font-size: 15px;
            color: var(--primary);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 20px;
        }
        .spec-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px 44px;
        }
        .spec-row {
            display: flex;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px dashed var(--border-light);
        }
        .spec-name {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .spec-val {
            font-weight: 600;
            font-size: 16px;
        }
        .spec-val em {
            color: var(--primary);
            font-weight: 700;
            font-style: normal;
        }
        .spec-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .spec-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
        }
        .spec-card .num-big {
            font-size: 44px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
        }
        .spec-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .spec-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .gallery-item {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .gallery-item img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            display: block;
        }
        .gallery-text {
            padding: 18px;
            text-align: center;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .comp-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .comp-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .comp-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            z-index: 2;
        }
        .comp-img-box {
            height: 190px;
            overflow: hidden;
        }
        .comp-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .comp-body {
            padding: 30px;
        }
        .comp-tag {
            font-size: 11px;
            padding: 5px 13px;
            background: rgba(14,165,233,0.08);
            color: var(--primary);
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 16px;
        }
        .comp-body h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .comp-desc-line {
            font-size: 13px;
            color: var(--text-muted);
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 20px;
        }
        .comp-list li {
            list-style: none;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0 8px 20px;
            position: relative;
        }
        .comp-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            position: absolute;
            left: 0;
            top: 15px;
        }

        .custom-tip {
            text-align: center;
            margin-bottom: 56px;
        }
        .custom-tip span {
            display: inline-block;
            padding: 16px 30px;
            background: rgba(14,165,233,0.04);
            border: 1px solid rgba(14,165,233,0.1);
            border-radius: 12px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .custom-tip strong {
            color: var(--primary);
            font-weight: 600;
        }
        .custom-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .custom-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .custom-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .custom-head {
            display: flex;
            align-items: center;
            gap: 16px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 24px;
        }
        .custom-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(99,102,241,0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }
        .custom-head h3 {
            font-size: 18px;
        }
        .custom-list li {
            list-style: none;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 9px 0 9px 22px;
            position: relative;
        }
        .custom-list li::before {
            content: '';
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            position: absolute;
            left: 0;
            top: 16px;
        }
        .custom-full {
            grid-column: span 3;
        }
        .custom-full .custom-list {
            columns: 3;
            column-gap: 40px;
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scene-card {
            position: relative;
            height: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .scene-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.65);
            display: block;
        }
        .scene-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 32px 28px 24px;
            background: linear-gradient(transparent, rgba(8,14,26,0.95));
            color: #fff;
        }
        .scene-info h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-info p {
            font-size: 13px;
            color: #cbd5e1;
            line-height: 1.6;
        }

        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 22px 32px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-question .icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-card-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            margin-left: 20px;
            font-weight: 600;
            transition: transform 0.2s ease, background 0.2s ease;
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 32px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 360px;
            padding: 0 32px 24px;
        }

        @media(max-width:1024px){
            section {padding:90px 0;}
            .spec-wrap, .gallery-grid {grid-template-columns: 1fr 1fr;}
            .comp-grid, .custom-grid, .scene-grid {grid-template-columns: 1fr 1fr;}
            .custom-full {grid-column: span 2;}
            .custom-full .custom-list {columns:2;}
            .hero-title {font-size: 46px;}
        }
        @media(max-width:768px){
            .container {padding:0 20px;}
            section {padding:70px 0;}
            .spec-wrap, .gallery-grid, .comp-grid, .custom-grid, .scene-grid {grid-template-columns: 1fr;}
            .custom-full {grid-column: span 1;}
            .custom-full .custom-list {columns:1;}
            .hero {min-height: auto; padding: 90px 0;}
            .hero-title {font-size: 34px;}
            .hero-data {flex-direction: column; gap:30px;}
            .spec-main {padding:32px 24px;}
            .scene-card {height: 280px;}
            .faq-question {padding: 18px 24px;}
            .faq-answer {padding: 0 24px;}
            .faq-item.active .faq-answer {padding: 0 24px 20px;}
        }