/* ---------- 完全独立模块，不影响导航，宽度严格1200px ---------- */
        .ecu-module {
            display: block;
            width: 1200px !important;      /* 强制1200px，绝不变宽 */
            margin-left: auto !important;
            margin-right: auto !important;
            background: #ffffff;
            font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
            color: #1e2e34;
            position: relative;
            padding: 2.5rem 2rem;
            box-sizing: border-box;
            box-shadow: 0 8px 30px rgba(13,124,144,0.12);
            border: none;
        }

        /* 所有子元素继承宽度 */
        .ecu-module * {
            box-sizing: border-box;
            max-width: 100%;
        }

        /* 上下粗线条装饰 */
        .ecu-module::before {
            content: '';
            position: absolute;
            top: 0;
            left: 2rem;
            right: 2rem;
            height: 4px;
            background: linear-gradient(90deg, transparent 0%, #0D7C90 20%, #0D7C90 80%, transparent 100%);
            opacity: 0.35;
            pointer-events: none;
            z-index: 1;
        }

        .ecu-module::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 2rem;
            right: 2rem;
            height: 4px;
            background: linear-gradient(90deg, transparent 0%, #0D7C90 20%, #0D7C90 80%, transparent 100%);
            opacity: 0.35;
            pointer-events: none;
            z-index: 1;
        }

        /* 左右垂直虚线 */
        .stripe-left {
            position: absolute;
            top: 2rem;
            left: 0;
            width: 4px;
            height: calc(100% - 4rem);
            background: repeating-linear-gradient(to bottom, #0D7C90 0px, #0D7C90 12px, transparent 12px, transparent 24px);
            opacity: 0.3;
            pointer-events: none;
            z-index: 1;
        }

        .stripe-right {
            position: absolute;
            top: 2rem;
            right: 0;
            width: 4px;
            height: calc(100% - 4rem);
            background: repeating-linear-gradient(to bottom, #0D7C90 0px, #0D7C90 12px, transparent 12px, transparent 24px);
            opacity: 0.3;
            pointer-events: none;
            z-index: 1;
        }

        /* 四角标记 */
        .corner-tl {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            width: 24px;
            height: 24px;
            border-top: 3px solid #0D7C90;
            border-left: 3px solid #0D7C90;
            opacity: 0.5;
            pointer-events: none;
            z-index: 2;
        }

        .corner-br {
            position: absolute;
            bottom: 0.8rem;
            right: 0.8rem;
            width: 24px;
            height: 24px;
            border-bottom: 3px solid #0D7C90;
            border-right: 3px solid #0D7C90;
            opacity: 0.5;
            pointer-events: none;
            z-index: 2;
        }

        /* 音乐符号装饰 (#c724b1) */
        .music-note {
            position: absolute;
            color: #c724b1;
            font-family: 'Segoe UI', 'Arial Unicode MS', sans-serif;
            opacity: 0.25;
            pointer-events: none;
            z-index: 0;
        }

        .note1 { top: 3rem; right: 4rem; font-size: 3.5rem; transform: rotate(10deg); }
        .note2 { bottom: 5rem; left: 3rem; font-size: 4rem; transform: rotate(-5deg); }
        .note3 { top: 50%; left: 10%; font-size: 2.8rem; transform: rotate(15deg); }

        .content-wrapper {
            position: relative;
            z-index: 10;
            width: 100%;
        }

        /* 开场白 */
        .opening-statement {
            margin-bottom: 2.8rem;
            border-left: 6px solid #0D7C90;
            padding-left: 1.8rem;
        }
        .opening-statement p {
            font-size: 1.05rem;
            line-height: 1.75;
            color: #1e3a44;
            margin-bottom: 0.8rem;
        }
        .opening-statement .highlight {
            font-weight: 600;
            color: #0D7C90;
        }
        .opening-statement .en {
            color: #2b5f6b;
            font-size: 0.95rem;
            border-top: 1px dashed #b8d9e0;
            padding-top: 0.8rem;
            margin-top: 0.5rem;
        }

        /* 表格 */
        .spec-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            font-size: 0.9rem;
            border: 1px solid #d0e3e9;
            box-shadow: 0 8px 12px -8px rgba(13,124,144,0.15);
            background: white;
        }
        .spec-table th {
            background: #0D7C90;
            color: white;
            font-weight: 500;
            padding: 0.9rem 0.8rem;
            text-align: left;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .spec-table td {
            padding: 0.9rem 0.8rem;
            border: 1px solid #d0e3e9;
            vertical-align: top;
        }
        .spec-table .std-code {
            font-weight: 600;
            color: #0D7C90;
            white-space: nowrap;
        }
        .spec-table .brand-list {
            list-style: none;
            padding-left: 0;
        }
        .spec-table .brand-list li {
            margin-bottom: 0.4rem;
            padding-left: 0.8rem;
            border-left: 2px solid #0D7C90;
        }

        /* 脚注 */
        .footer-note {
            margin-top: 2rem;
            text-align: right;
            border-top: 2px dotted #c724b1;
            padding-top: 1rem;
            color: #1e2e34;
            font-size: 0.95rem;
            position: relative;
        }
        .footer-note .right-place {
            font-weight: 500;
            color: #0D7C90;
        }
        .footer-note .choice {
            font-weight: 600;
            color: #c724b1;
        }
        .footer-note::after {
            content: '♪';
            position: absolute;
            right: -0.2rem;
            top: -0.5rem;
            font-size: 2.2rem;
            color: #c724b1;
            opacity: 0.3;
            transform: rotate(5deg);
            pointer-events: none;
        }