/* ============================================================
           完全保留源码1的RESET & VARIABLES (Apple-style)
           ============================================================ */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #ffffff;
            color: #1d1d1f;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* ============================================================
           TYPOGRAPHY (源码1)
           ============================================================ */
        .section-label {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: #86868b;
            margin-bottom: 10px;
            background: #f0f0f2;
            padding: 4px 18px;
            border-radius: 100px;
        }
        .section-title {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1.1;
            color: #1d1d1f;
        }
        .section-title .highlight { color: #0066cc; border-bottom: 4px solid #0066cc; padding-bottom: 2px; }
        .section-subtitle {
            font-size: 1.1rem;
            color: #86868b;
            max-width: 600px;
            margin-top: 12px;
            font-weight: 400;
            line-height: 1.7;
        }
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header .section-subtitle { margin-left: auto; margin-right: auto; }

        /* ============================================================
           BUTTONS (源码1)
           ============================================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 40px;
            border-radius: 980px;
            font-weight: 500;
            font-size: 0.95rem;
            border: 1px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
            background: transparent;
            color: #1d1d1f;
            text-decoration: none;
        }
        .btn-primary { background: #1d1d1f; color: #fff; box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
        .btn-primary:hover { background: #333; transform: scale(1.02); color: #fff; }
        .btn-outline { border-color: #d2d2d7; color: #1d1d1f; }
        .btn-outline:hover { background: #e8e8ed; border-color: #a1a1a6; }
        .btn-accent { background: #0066cc; color: #fff; }
        .btn-accent:hover { background: #0055b3; color: #fff; }
        .btn-sm { padding: 8px 24px; font-size: 0.8rem; }

        /* ============================================================
           COMPATIBILITY ALERT (源码1 – 内容整合源码2警告)
           ============================================================ */
        .compat-alert {
            background: #fff8f8;
            padding: 14px 20px;
            border-left: 6px solid #e74c3c;
            border-radius: 10px;
            margin: 30px 0 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            box-shadow: 0 2px 12px rgba(231,76,60,0.08);
        }
        .compat-alert .alert-icon { font-size: 1.8rem; flex-shrink: 0; line-height: 1.2; }
        .compat-alert .alert-body { flex: 1; }
        .compat-alert .alert-body h3 { font-size: 1.05rem; font-weight: 700; color: #c0392b; margin: 0 0 4px; }
        .compat-alert .alert-body p { font-size: 0.95rem; color: #5a3d3d; margin: 0; }
        .compat-alert .alert-body strong { color: #e74c3c; }
        @media (max-width: 600px) {
            .compat-alert { flex-direction: column; align-items: center; text-align: center; padding: 16px; }
            .compat-alert .alert-icon { font-size: 2.2rem; }
        }

        /* ============================================================
           HERO (源码1结构，内容替换为双产品系列)
           ============================================================ */
        .hero { padding: 60px 0 50px; background: #ffffff; border-bottom: 1px solid #f0f0f2; }
        .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .hero-text h1 {
            font-size: 3.2rem;
            font-weight: 700;
            letter-spacing: -0.035em;
            line-height: 1.05;
            color: #1d1d1f;
            margin-bottom: 16px;
        }
        .hero-text h1 .highlight { color: #0066cc; }
        .hero-text p { font-size: 1.1rem; color: #86868b; max-width: 480px; margin-bottom: 28px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        .hero-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px 24px;
            margin-bottom: 28px;
            list-style: none;
            padding: 0;
        }
        .hero-features li { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; color: #424245; }
        .hero-features li .icon { color: #0066cc; font-weight: 600; }
        .hero-image { display: flex; justify-content: center; align-items: center; background: #f8f8fa; border-radius: 32px; padding: 24px; }
        .hero-image img { max-height: 400px; object-fit: contain; filter: drop-shadow(0 8px 30px rgba(0,0,0,0.04)); }
        @media (max-width: 1024px) { .hero-text h1 { font-size: 2.6rem; } }
        @media (max-width: 768px) {
            .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 40px; }
            .hero-text h1 { font-size: 2.2rem; }
            .hero-text p { margin-left: auto; margin-right: auto; }
            .hero-actions { justify-content: center; }
            .hero-features { grid-template-columns: 1fr; max-width: 280px; margin-left: auto; margin-right: auto; text-align: left; }
            .hero-image img { max-height: 260px; }
        }
        @media (max-width: 480px) {
            .hero-text h1 { font-size: 1.8rem; }
            .btn { padding: 12px 24px; font-size: 0.85rem; width: 100%; justify-content: center; }
            .hero-actions { flex-direction: column; align-items: stretch; }
        }

        /* ============================================================
           HIGHLIGHTS (3 cards – 整合源码2的六大优势中选三个)
           ============================================================ */
        .highlights { padding: 80px 0 60px; background: #f5f5f7; }
        .highlights-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .highlight-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 36px 28px 32px;
            box-shadow: 0 2px 20px rgba(0,0,0,0.03);
            border: 1px solid rgba(0,0,0,0.04);
            transition: all 0.35s ease;
            text-align: center;
        }
        .highlight-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
        .highlight-card .icon-box {
            width: 64px; height: 64px; border-radius: 16px; background: #f0f0f2;
            display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 30px;
            transition: 0.2s ease;
        }
        .highlight-card:hover .icon-box { background: #0066cc; color: #fff; }
        .highlight-card .stat { font-weight: 800; font-size: 2.0rem; color: #1d1d1f; line-height: 1.2; }
        .highlight-card .stat .unit { font-size: 0.8rem; font-weight: 500; color: #86868b; }
        .highlight-card h3 { font-size: 1.1rem; font-weight: 700; color: #1d1d1f; margin: 6px 0 4px; }
        .highlight-card h3 .sub { display: block; font-weight: 400; font-size: 0.78rem; color: #86868b; }
        .highlight-card p { color: #86868b; font-size: 0.9rem; line-height: 1.7; margin-top: 4px; }
        .highlight-card .tag {
            display: inline-block; font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
            letter-spacing: 0.04em; padding: 4px 16px; border-radius: 100px; margin-top: 14px;
            background: #e8e8ed; color: #1d1d1f;
        }
        .highlight-card .tag.accent-tag { background: #dbeafe; color: #0066cc; }
        @media (max-width: 1024px) {
            .highlights-grid { grid-template-columns: 1fr 1fr; }
            .highlights-grid .highlight-card:last-child { grid-column: span 2; max-width: 480px; margin: 0 auto; }
        }
        @media (max-width: 768px) {
            .highlights-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
            .highlights-grid .highlight-card:last-child { grid-column: 1; max-width: 100%; }
        }

        /* ============================================================
           DUAL DRIVE SOLUTIONS – 移动端App + PC读写器 (内容来自源码2)
           ============================================================ */
        .dual-drive-section { padding: 80px 0; background: #ffffff; }
        .drive-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 12px; }
        .drive-card {
            background: #f8f8fa;
            border-radius: 28px;
            padding: 36px 32px 32px;
            border: 1px solid #f0f0f2;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .drive-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.05); }
        .drive-card .card-badge {
            display: inline-block; padding: 6px 20px; border-radius: 50px; font-weight: 700;
            font-size: 0.75rem; letter-spacing: 0.6px; text-transform: uppercase; align-self: flex-start;
            margin-bottom: 18px;
        }
        .badge-mobile { background: #eef6ff; color: #2A5CAA; }
        .badge-pc { background: #e8f5e9; color: #1a7a4c; }
        .drive-card h3 { font-size: 1.5rem; font-weight: 700; color: #1d1d1f; margin-bottom: 6px; }
        .drive-card .card-sub { font-size: 0.9rem; color: #86868b; margin-bottom: 18px; }
        .drive-card ul { list-style: none; padding: 0; margin-bottom: 20px; flex: 1; }
        .drive-card ul li {
            display: flex; align-items: center; gap: 12px; padding: 8px 0;
            border-bottom: 1px solid #f0f0f2; font-size: 0.92rem; color: #424245;
        }
        .drive-card ul li:last-child { border-bottom: none; }
        .drive-card ul li .li-icon { color: #0066cc; font-weight: 600; font-size: 1.1rem; width: 24px; text-align: center; flex-shrink: 0; }
        .drive-media {
            display: flex; gap: 20px; align-items: stretch; margin: 16px 0 20px;
            background: #ffffff; border-radius: 16px; padding: 16px; border: 1px solid #f0f0f2; flex-wrap: wrap;
        }
        .drive-media .qr-box { flex: 0 0 100px; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
        .drive-media .qr-box img { width: 100px; height: 100px; object-fit: contain; border-radius: 8px; background: white; padding: 4px; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
        .drive-media .qr-box .qr-label { font-size: 0.6rem; color: #a1a1a6; margin-top: 4px; }
        .drive-media .video-box { flex: 1; min-width: 160px; }
        .drive-media .video-box .video-player {
            position: relative; width: 100%; padding-bottom: 56.25%; background: #111;
            border-radius: 10px; overflow: hidden; cursor: pointer; box-shadow: 0 2px 12px rgba(0,0,0,0.06);
            transition: box-shadow 0.3s ease;
        }
        .drive-media .video-box .video-player:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.12); }
        .drive-media .video-box .video-player .video-thumb {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
        }
        .drive-media .video-box .video-player .play-overlay {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            display: flex; align-items: center; justify-content: center;
            background: rgba(0,0,0,0.25); transition: background 0.3s ease;
        }
        .drive-media .video-box .video-player:hover .play-overlay { background: rgba(0,0,0,0.12); }
        .drive-media .video-box .video-player .play-btn {
            width: 52px; height: 52px; background: rgba(255,255,255,0.92); border-radius: 50%;
            display: flex; align-items: center; justify-content: center; transition: transform 0.3s ease;
            box-shadow: 0 4px 16px rgba(0,0,0,0.2);
        }
        .drive-media .video-box .video-player:hover .play-btn { transform: scale(1.06); }
        .drive-media .video-box .video-player .play-btn svg { width: 28px; height: 28px; margin-left: 3px; filter: drop-shadow(0 1px 4px rgba(0,0,0,0.1)); }
        .drive-media .video-box .video-player iframe {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; border-radius: 10px;
        }
        .drive-media .video-box .video-label { font-size: 0.7rem; color: #a1a1a6; text-align: center; margin-top: 6px; }
        .drive-card .btn { align-self: flex-start; margin-top: 4px; }
        .drive-compat-note {
            margin-top: 32px; padding: 16px 24px; background: #fafafa; border-radius: 16px;
            border: 1px solid #f0f0f2; display: flex; align-items: flex-start; gap: 16px;
            font-size: 0.88rem; color: #555; line-height: 1.6;
        }
        .drive-compat-note .note-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
        .drive-compat-note strong { color: #b33c3c; }
        .drive-compat-note .model-badge {
            display: inline-block; font-family: 'Inter', monospace; font-weight: 700;
            background: #1d1d1f; color: #fff; padding: 1px 12px; border-radius: 20px; font-size: 0.7rem; letter-spacing: 0.3px; margin: 0 2px;
        }
        .drive-compat-note .highlight-red { font-weight: 700; color: #c0392b; background: rgba(192,57,43,0.06); padding: 1px 8px; border-radius: 4px; }
        .drive-compat-note .note-divider { border: 0; border-top: 1px solid #e8e8ed; margin: 8px 0; }
        @media (max-width: 1024px) { .drive-grid { gap: 24px; } }
        @media (max-width: 768px) {
            .drive-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
            .drive-card { padding: 28px 24px 24px; }
            .drive-media { flex-direction: column; align-items: stretch; padding: 14px; }
            .drive-media .qr-box { flex: 1 1 auto; display: flex; flex-direction: column; align-items: center; }
            .drive-media .qr-box img { width: 120px; height: 120px; }
            .drive-card .btn { align-self: center; width: 100%; justify-content: center; }
            .drive-compat-note { flex-direction: column; align-items: center; text-align: center; padding: 16px 18px; }
            .drive-compat-note .note-icon { font-size: 1.8rem; }
        }
        @media (max-width: 480px) {
            .drive-card h3 { font-size: 1.25rem; }
            .drive-media .qr-box img { width: 100px; height: 100px; }
            .drive-compat-note { font-size: 0.82rem; padding: 14px; }
        }

        /* ============================================================
           TECH SPECS – 双栏并排规格表 (DMN036EW 和 DMN037FW)
           ============================================================ */
        .specs-section { padding: 80px 0; background: #f5f5f7; }
        .specs-grid-dual { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 12px; }
        .specs-card-dual {
            background: #ffffff; border-radius: 28px; padding: 32px 28px 28px;
            border: 1px solid #f0f0f2; box-shadow: 0 2px 20px rgba(0,0,0,0.03);
            transition: all 0.3s ease;
        }
        .specs-card-dual:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
        .specs-card-dual .model-head {
            display: flex; align-items: center; justify-content: space-between;
            margin-bottom: 20px; padding-bottom: 16px; border-bottom: 2px solid #f0f0f2;
        }
        .specs-card-dual .model-head h3 {
            font-size: 1.6rem; font-weight: 700; color: #1d1d1f; letter-spacing: -0.02em;
        }
        .specs-card-dual .model-head .model-badge-lg {
            display: inline-block; font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
            letter-spacing: 0.6px; padding: 4px 18px; border-radius: 100px; background: #eef6ff; color: #2A5CAA;
        }
        .specs-card-dual .model-head .model-badge-lg.spectra6 { background: #f3e8ff; color: #7c3aed; }
        .specs-table-dual { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
        .specs-table-dual tr { border-bottom: 1px solid #f0f0f2; }
        .specs-table-dual tr:last-child { border-bottom: none; }
        .specs-table-dual td { padding: 12px 8px 12px 0; vertical-align: top; }
        .specs-table-dual .param-label { font-weight: 600; color: #1d1d1f; width: 42%; font-size: 0.8rem; letter-spacing: 0.02em; }
        .specs-table-dual .param-value { color: #424245; width: 58%; font-size: 0.8rem; font-weight: 400; }
        .specs-table-dual .param-value strong { color: #1d1d1f; font-weight: 600; }
        @media (max-width: 1024px) {
            .specs-grid-dual { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }
        }
        @media (max-width: 768px) {
            .specs-card-dual { padding: 24px 20px 20px; }
            .specs-card-dual .model-head h3 { font-size: 1.3rem; }
            .specs-table-dual { font-size: 0.78rem; }
            .specs-table-dual td { padding: 10px 6px 10px 0; }
            .specs-table-dual .param-label { width: 44%; }
            .specs-table-dual .param-value { width: 56%; }
        }
        @media (max-width: 480px) {
            .specs-table-dual .param-label { width: 40%; font-size: 0.7rem; }
            .specs-table-dual .param-value { width: 60%; font-size: 0.7rem; }
            .specs-card-dual .model-head { flex-direction: column; align-items: flex-start; gap: 8px; }
            .specs-card-dual .model-head .model-badge-lg { align-self: flex-start; }
        }

        /* ============================================================
           APPLICATIONS – 源码2的应用场景
           ============================================================ */
        .apps-section { padding: 80px 0; background: #f5f5f7; }
        .apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .app-card {
            background: #ffffff; border-radius: 24px; padding: 32px 24px;
            text-align: center; border: 1px solid #f0f0f2; transition: all 0.3s ease;
        }
        .app-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.04); }
        .app-card img { max-width: 100%; height: auto; margin-bottom: 12px; border-radius: 8px; }
        .app-card h4 { font-weight: 600; font-size: 1.1rem; color: #1d1d1f; margin-bottom: 6px; }
        .app-card p { font-size: 0.9rem; color: #86868b; line-height: 1.6; }
        @media (max-width: 1024px) { .apps-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) {
            .apps-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }
        }

        /* ============================================================
           SUSTAINABILITY – 源码2的可持续技术
           ============================================================ */
        .sustain-section { padding: 80px 0; background: #ffffff; }
        .sustain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .sustain-card {
            background: #f5f5f7; border-radius: 24px; padding: 32px 24px;
            text-align: center; border: 1px solid #f0f0f2;
        }
        .sustain-card .sustain-emoji { font-size: 2.6rem; display: block; margin-bottom: 12px; }
        .sustain-card h4 { font-weight: 600; font-size: 1.05rem; color: #1d1d1f; margin-bottom: 6px; }
        .sustain-card p { font-size: 0.9rem; color: #86868b; line-height: 1.6; }
        @media (max-width: 1024px) { .sustain-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) {
            .sustain-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }
        }

        /* ============================================================
           DOWNLOADS – 整合源码2的文件下载
           ============================================================ */
        .downloads-section { padding: 80px 0; background: #f5f5f7; }
        .downloads-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
        .download-group {
            background: #ffffff; border-radius: 20px; padding: 24px 28px; border: 1px solid #f0f0f2;
        }
        .download-group h4 { font-weight: 600; font-size: 0.9rem; color: #1d1d1f; margin-bottom: 14px; letter-spacing: 0.3px; border-bottom: 1px solid #e8e8ed; padding-bottom: 10px; }
        .download-group ul { list-style: none; padding: 0; }
        .download-group ul li { margin-bottom: 10px; padding: 6px 0; border-bottom: 1px solid #f0f0f2; }
        .download-group ul li:last-child { border-bottom: 0; margin-bottom: 0; }
        .download-group ul li a {
            display: flex; align-items: center; gap: 12px; font-size: 0.88rem; color: #1d1d1f;
            font-weight: 500; text-decoration: none; transition: all 0.2s ease;
        }
        .download-group ul li a:hover { color: #0066cc; transform: translateX(4px); }
        .download-group ul li a .dl-icon { font-size: 1.1rem; flex-shrink: 0; width: 28px; text-align: center; }
        .download-group ul li a .dl-desc { font-weight: 400; color: #86868b; font-size: 0.75rem; display: block; }
        .download-note { grid-column: 1 / -1; text-align: center; margin-top: 8px; font-size: 0.85rem; color: #86868b; }
        .download-note a { color: #0066cc; text-decoration: none; }
        .download-note a:hover { text-decoration: underline; }
        @media (max-width: 1024px) { .downloads-grid { grid-template-columns: 1fr; max-width: 600px; } }

        /* ============================================================
           RECOMMENDED – 保留源码1推荐产品
           ============================================================ */
        .rec-section { padding: 60px 0 80px; background: #ffffff; }
        .rec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .rec-card {
            background: #f5f5f7; border-radius: 20px; padding: 20px; text-align: center;
            border: 1px solid #f0f0f2; transition: all 0.2s ease;
        }
        .rec-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.04); }
        .rec-card img { max-height: 80px; margin: 0 auto 12px; object-fit: contain; }
        .rec-card h5 { font-weight: 600; font-size: 0.9rem; color: #1d1d1f; }
        .rec-card a { font-size: 0.8rem; color: #0066cc; text-decoration: none; display: inline-block; margin-top: 6px; }
        .rec-card a:hover { text-decoration: underline; }
        @media (max-width: 1024px) { .rec-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .rec-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .rec-grid { grid-template-columns: 1fr; max-width: 260px; margin: 0 auto; } }

        /* ============================================================
           ABOUT / CONTACT – 整合源码2的联系信息
           ============================================================ */
        .about-section { padding: 80px 0; background: #f5f5f7; text-align: center; }
        .about-box {
            background: #ffffff; border-radius: 28px; padding: 40px; max-width: 640px;
            margin: 0 auto; border: 1px solid #f0f0f2; box-shadow: 0 2px 20px rgba(0,0,0,0.02);
        }
        .about-box .email { font-size: 1.3rem; font-weight: 600; color: #1d1d1f; }
        .about-box .email a { color: #0066cc; text-decoration: none; }
        .about-box .email a:hover { text-decoration: underline; }
        .about-box .cert { font-size: 0.85rem; color: #86868b; border-top: 1px solid #e8e8ed; padding-top: 20px; margin-top: 20px; }
        .about-box .btn { margin-top: 20px; }
        .about-footer { margin-top: 32px; font-size: 0.75rem; color: #a1a1a6; }
        @media (max-width: 768px) {
            .about-box { padding: 24px; }
            .about-box .email { font-size: 1.1rem; }
        }

        /* ============================================================
           GENERAL RESPONSIVE OVERRIDES
           ============================================================ */
        @media (max-width: 1024px) { .section-title { font-size: 2.2rem; } }
        @media (max-width: 480px) {
            .section-title { font-size: 1.8rem; }
            .highlight-card { padding: 24px 18px; }
        }