/* --- Shared Tokens --- */
    :root {
        --hz-navy: #0F172A;
        /* 统一主色调 */
        --hz-orange: #ec682e;
        --hz-text: #334155;
    }
    
    /* 全局字体 */
    body { 
        margin: 0; 
        font-family: 'Open Sans', sans-serif; 
        font-weight: 400;
    }

    /* --- DTS/DAS Module Container --- */
    .dts-das-module {
        width: 100%;
        background-color: #ffffff;
        padding: 100px 0;
        position: relative;
        overflow: hidden;
    }

    .module-inner {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 40px;
        display: flex;
        align-items: center;
        gap: 80px;
        box-sizing: border-box;
        position: relative;
        z-index: 2;
    }

    /* --- Left: Text Content --- */
    .text-col { flex: 1; z-index: 2; position: relative; }

    .eyebrow-orange {
        /* 修改点：Poppins SemiBold, #ec682e */
        color: var(--hz-orange); 
        font-family: 'Poppins', sans-serif;
        font-weight: 600; 
        text-transform: uppercase; font-size: 0.875rem;
        letter-spacing: 1.5px; margin-bottom: 16px; display: inline-flex; align-items: center; gap: 8px;
        border-bottom: 2px solid rgba(236, 104, 46, 0.2); 
        padding-bottom: 4px;
    }
    
    .pulse-icon {
        width: 12px; height: 12px; border-radius: 50%;
        /* 修改点：脉冲点改为橙色 */
        background: var(--hz-orange);
        box-shadow: 0 0 10px var(--hz-orange);
        animation: pulse-glow 2s infinite;
    }
    @keyframes pulse-glow { 0% { opacity: 0.4; transform: scale(0.8); } 50% { opacity: 1; transform: scale(1.2); } 100% { opacity: 0.4; transform: scale(0.8); } }

    .headline { 
        /* 修改点：Poppins Medium */
        font-family: 'Poppins', sans-serif;
        font-weight: 500;
        font-size: 3rem; 
        color: var(--hz-navy); line-height: 1.1; margin: 0 0 24px 0; letter-spacing: -1px; 
    }
    
    /* 修改点：移除渐变，改为纯橙色高亮 */
    .highlight-text { 
        color: var(--hz-orange);
    }
    
    .body-text { 
        color: var(--hz-text); 
        font-family: 'Open Sans', sans-serif;
        font-size: 1.125rem; line-height: 1.6; margin-bottom: 40px; max-width: 95%; 
    }

    /* 4-Grid Specs */
    .spec-list { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-bottom: 45px; }
    .spec-item { display: flex; align-items: flex-start; }

    /* Unified Icon Box (原 Cyan/Red 全部统一为 Orange) */
    .spec-icon-orange { 
        width: 44px; height: 44px; 
        /* 修改点：淡橙色背景 */
        background: #FFF7ED; 
        /* 修改点：橙色图标 */
        color: var(--hz-orange); 
        border-radius: 12px; 
        display: flex; align-items: center; justify-content: center; 
        margin-right: 16px; flex-shrink: 0; 
        border: 1px solid rgba(236, 104, 46, 0.1);
    }

    .spec-content strong { display: block; color: var(--hz-navy); font-size: 1rem; margin-bottom: 4px; font-weight: 700; font-family: 'Open Sans', sans-serif; }
    .spec-content span { font-size: 0.9rem; color: #64748B; line-height: 1.4; font-family: 'Open Sans', sans-serif; }

    /* Button Updates */
    .btn-orange {
        display: inline-flex; align-items: center; justify-content: center;
        /* 修改点：默认橙色 */
        background-color: var(--hz-orange); 
        color: #ffffff; 
        border: 2px solid var(--hz-orange);
        padding: 16px 40px; border-radius: 100px; font-weight: 600; text-decoration: none;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 10px 20px -10px rgba(236, 104, 46, 0.4);
        font-family: 'Open Sans', sans-serif;
    }
    .btn-orange:hover {
        /* 修改点：悬停反色 */
        background-color: #ffffff !important; 
        color: var(--hz-orange) !important;
        border-color: var(--hz-orange) !important;
        transform: translateY(-2px); 
        box-shadow: 0 15px 30px -10px rgba(236, 104, 46, 0.2);
    }

    /* --- Right: Visual Column --- */
    .pipeline-visual-col {
        flex: 1.2;
        position: relative;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 30px 60px -15px rgba(15, 23, 42, 0.2);
        min-width: 0;
        background: #000; 
        height: 500px;
    }

    .pipeline-img {
        width: 100%; height: 100%; object-fit: cover;
        opacity: 0.9; transition: transform 0.5s;
        filter: brightness(0.6) contrast(1.2);
    }
    .pipeline-visual-col:hover .pipeline-img { transform: scale(1.05); }

    /* --- Product Stack --- */
    .product-stack {
        position: absolute;
        top: 30px; 
        left: 30px;
        width: 150px; 
        z-index: 20;
        display: flex;
        flex-direction: column; 
        gap: 15px; 
    }

    .product-card {
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 12px;
        padding: 12px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .product-card:hover {
        transform: scale(1.05);
        /* 修改点：悬停边框颜色 */
        border-color: var(--hz-orange);
        background: rgba(0, 0, 0, 0.7);
    }
    .product-card img {
        width: 100%; height: auto; display: block;
        filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.5));
    }
    .product-label {
        margin-top: 8px; text-align: center; color: #fff;
        font-size: 10px; font-weight: 700; letter-spacing: 1px; opacity: 0.9;
        font-family: 'Open Sans', sans-serif;
    }

    /* Visual Effects */
    .fiber-path-svg {
        position: absolute; top: 0; left: 0; width: 100%; height: 100%;
        pointer-events: none; z-index: 10;
        /* 修改点：光晕颜色 */
        filter: drop-shadow(0 0 5px var(--hz-orange));
    }
    
    .fiber-pulse {
        offset-path: path("M 80 150 Q 150 380, 300 350 T 600 250 T 900 150"); 
        animation: travel 3s linear infinite;
        position: absolute; width: 60px; height: 4px;
        /* 修改点：光纤传输流光改为橙色 */
        background: linear-gradient(90deg, transparent, var(--hz-orange), #fff);
        border-radius: 2px; z-index: 11;
    }
    
    .anomaly-marker {
        position: absolute; top: 240px; left: 580px; 
        width: 24px; height: 24px; 
        /* 修改点：报警点背景改为橙色 */
        background: rgba(236, 104, 46, 0.9);
        border: 2px solid #fff; border-radius: 50%;
        box-shadow: 0 0 20px #ec682e;
        animation: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
        z-index: 12; display: flex; align-items: center; justify-content: center;
    }
    .marker-icon { font-size: 12px; }
    .marker-label {
        position: absolute; top: -40px; left: 50%; transform: translateX(-50%);
        /* 修改点：报警标签背景 */
        background: #ec682e; 
        color: #fff; padding: 4px 8px; border-radius: 4px;
        font-size: 10px; font-weight: 800; white-space: nowrap;
        opacity: 0; animation: fade-in-out 3s infinite;
        box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        font-family: 'Open Sans', sans-serif;
    }

    @keyframes travel { 0% { offset-distance: 0%; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { offset-distance: 100%; opacity: 0; } }
    @keyframes ping { 75%, 100% { transform: scale(2); opacity: 0; } }
    @keyframes fade-in-out { 0%, 100% { opacity: 0; } 20% { opacity: 1; top: -40px; } 80% { opacity: 1; top: -40px; } 100% { opacity: 0; } }

    .fiber-hud {
        position: absolute; bottom: 20px; left: 20px; right: 20px;
        background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(8px);
        border-radius: 12px; padding: 15px 20px;
        display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px;
        border: 1px solid rgba(255,255,255,0.1);
        z-index: 15;
    }
    .hud-metric { text-align: left; }
    .metric-label { font-size: 10px; color: #94a3b8; display: block; margin-bottom: 4px; text-transform: uppercase; font-family: 'Open Sans', sans-serif; font-weight: 700; }
    .metric-val { font-size: 16px; color: white; font-weight: 700; font-family: 'Open Sans', monospace; }
    .metric-sub { font-size: 11px; color: #64748B; margin-left: 2px; font-weight: 400; }

    @media (max-width: 1024px) {
        .module-inner { flex-direction: column; padding: 0 24px; gap: 60px; }
        .visual-col, .text-col { width: 100%; }
        .headline { font-size: 2.5rem; }
        .spec-list { grid-template-columns: 1fr; }
        .pipeline-visual-col { height: 350px; }
        .fiber-pulse { display: none; }
        .product-stack { width: 120px; top: 15px; left: 15px; } 
    }