/* 严格隔离——仅作用于本区块，不影响外部全局 */
        .ecu-system-block * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .ecu-system-block {
            display: block;
            width: 100%;
            background: #ffffff;
            font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
            color: #1e2e34;
            all: initial; /* 重置外部影响 */
            display: block;
            font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
            position: relative;
            padding: 2.7rem 1.8rem;  
            isolation: isolate;
        }

        /* 几何线条背景 */
        .ecu-system-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(to right, #0D7C90 1px, transparent 1px),
                linear-gradient(to bottom, #0D7C90 1px, transparent 1px);
            background-size: 48px 48px;
            opacity: 0.12;
            pointer-events: none;
            z-index: 0;
        }

        /* 额外强化边界 —— 四角几何标记 */
        .ecu-system-block::after {
            content: '';
            position: absolute;
            top: 1.35rem;
            right: 1.35rem;
            width: 54px;
            height: 54px;
            border-top: 3px solid #0D7C90;
            border-right: 3px solid #0D7C90;
            opacity: 0.5;
            pointer-events: none;
            z-index: 1;
        }

        .corner-marker-left {
            position: absolute;
            bottom: 1.35rem;
            left: 1.35rem;
            width: 54px;
            height: 54px;
            border-bottom: 3px solid #0D7C90;
            border-left: 3px solid #0D7C90;
            opacity: 0.5;
            pointer-events: none;
            z-index: 1;
        }

        /* 内容容器 */
        .system-container {
            max-width: 1170px;
            margin: 0 auto;
            position: relative;
            z-index: 5;
        }

        /* 标题区域 */
        .title-rule {
            margin-bottom: 2.7rem;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            border-bottom: 2px solid rgba(13, 124, 144, 0.3);
            padding-bottom: 0.9rem;
        }
        .title-rule h2 {
            font-size: 2.25rem;
            font-weight: 600;
            letter-spacing: -0.02em;
            color: #0D7C90;
            line-height: 1.2;
        }
        .title-rule h2 .light {
            font-weight: 300;
            color: #2a4b55;
            display: block;
            font-size: 1.08rem;
            letter-spacing: 0.4px;
            margin-top: 0.2rem;
            white-space: nowrap;
        }
        .rule-badge {
            background: rgba(13, 124, 144, 0.1);
            padding: 0.54rem 1.35rem;
            border-left: 5px solid #0D7C90;
            font-weight: 500;
            color: #0D7C90;
            text-transform: uppercase;
            font-size: 0.81rem;
        }

        /* 文案图片混合区 */
        .hero-phrase {
            display: flex;
            gap: 2.25rem;
            margin-bottom: 3.6rem;
            flex-wrap: wrap;
            background: #fafdff;
            border: 1px solid #dde9ed;
            padding: 1.6rem 1.8rem;
            box-shadow: 0 10px 18px -10px rgba(13,124,144,0.2);
        }
        .phrase-text {
            flex: 2;
            min-width: 270px;
        }
        .phrase-text p {
            font-size: 1rem;
            color: #1c3b44;
            margin-bottom: 1.35rem;
            font-weight: 400;
            line-height: 1.6;
            border-left: 4px solid #0D7C90;
            padding-left: 1.35rem;
        }
        .cert-highlight {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem 1.8rem;
            margin-top: 0.9rem;
        }
        .cert-item {
            background: white;
            border: 1px solid #0D7C90;
            padding: 0.3rem 1.08rem;
            border-radius: 0px;
            font-weight: 500;
            color: #0D7C90;
            font-size: 0.86rem;
            box-shadow: 2px 2px 0 #0D7C90;
        }
        .phrase-image {
            flex: 1;
            min-width: 216px;
            background: #e6f2f5;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px dashed #0D7C90;
            padding: 0.9rem;
            font-size: 0.81rem;
            color: #1f5f6b;
            text-align: center;
        }
        .mock-img {
            width: 100%;
            background: linear-gradient(145deg, #ffffff, #d7ecf0);
            border: 1px solid #0D7C90;
            padding: 1.8rem 0.45rem;
            text-align: center;
            color: #0D7C90;
            font-weight: 500;
        }
        .mock-img svg {
            width: 43px;
            height: 43px;
            stroke: #0D7C90;
            fill: none;
            margin-bottom: 0.45rem;
        }

        /* 核心认证卡片 —— 确保每行描述不换行 */
        .core-certs {
            display: flex;
            flex-wrap: wrap;
            gap: 1.35rem;
            margin: 3.15rem 0 2.25rem;
            justify-content: center;
        }
        .cert-card {
            flex: 1 1 162px;
            background: #ffffff;
            border: 2px solid #0D7C90;
            padding: 1.35rem 0.5rem;
            text-align: center;
            box-shadow: 5px 5px 0 rgba(13, 124, 144, 0.2);
            transition: 0.15s;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .cert-card .code {
            font-size: 1.62rem;
            font-weight: 700;
            color: #0D7C90;
            line-height: 1.2;
            margin-bottom: 0.2rem;
        }
        .cert-card .desc {
            font-size: 0.81rem;
            color: #2d4d57;
            border-top: 1px solid #c2dce3;
            margin-top: 0.5rem;
            padding-top: 0.5rem;
            white-space: nowrap;
            max-width: 100%;
        }
        .cert-card:first-child .desc {
            letter-spacing: -0.01em;
            font-size: 0.8rem;
        }

        /* 流程价值表 */
        .flow-title {
            font-size: 1.62rem;
            font-weight: 500;
            color: #0D7C90;
            margin: 2.7rem 0 1.35rem;
            border-left: 6px solid #0D7C90;
            padding-left: 1.08rem;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.35rem;
            margin-bottom: 2.7rem;
        }
        .flow-step {
            border: 1px solid #bee0e7;
            background: #ffffff;
            padding: 1.35rem 0.9rem 0.9rem;
            box-shadow: 3px 3px 0 #e2f0f3;
            position: relative;
        }
        .flow-step .step-number {
            font-size: 2.7rem;
            font-weight: 700;
            color: #d2e9ef;
            line-height: 1;
            position: absolute;
            top: 0.18rem;
            right: 0.45rem;
            z-index: 0;
        }
        .flow-step .step-name {
            font-weight: 600;
            color: #0D7C90;
            font-size: 1.08rem;
            border-bottom: 2px solid #0D7C90;
            padding-bottom: 0.27rem;
            display: inline-block;
            margin-bottom: 0.72rem;
            position: relative;
            z-index: 2;
        }
        .flow-step ul {
            list-style: none;
            font-size: 0.81rem;
            color: #2c4a54;
            z-index: 2;
            position: relative;
        }
        .flow-step li {
            margin-bottom: 0.45rem;
            padding-left: 0.9rem;
            border-left: 2px solid #0D7C90;
        }

        /* 标准体系表格 */
        .std-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2.25rem 0 2.7rem;
            border: 1px solid #0D7C90;
            font-size: 0.86rem;
        }
        .std-table th {
            background: #0D7C90;
            color: white;
            font-weight: 500;
            padding: 0.72rem 0.9rem;
            text-align: left;
        }
        .std-table td {
            padding: 0.9rem;
            border: 1px solid #c5dfe6;
            vertical-align: top;
        }
        .std-table tr:last-child td {
            border-bottom: 2px solid #0D7C90;
        }

        /* UL 508经验分享区块 */
        .experience-block {
            background: #f3f9fb;
            padding: 1.8rem;
            border: 3px solid #0D7C90;
            outline: 2px solid white;
            outline-offset: -6px;
            margin: 1.8rem 0;
        }
        .exp-title {
            display: flex;
            align-items: center;
            gap: 0.72rem;
            font-size: 1.44rem;
            font-weight: 600;
            color: #0D7C90;
            margin-bottom: 1.35rem;
        }
        .exp-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
        }
        .rule-item {
            background: white;
            padding: 1.35rem;
            border-left: 6px solid #0D7C90;
            box-shadow: 0 3px 8px rgba(0,0,0,0.03);
        }
        .rule-item h4 {
            color: #0D7C90;
            margin-bottom: 0.72rem;
            font-size: 1.08rem;
        }
        
        /* ----- 核心样式：所有音乐符号强制使用 #c724b1，并分别设定放大尺寸 ----- */
        .music-note,
        .rest-symbol,
        .exp-title .music-note,
        .exp-title .rest-symbol,
        .rule-item .music-note,
        .rule-item .rest-symbol {
            color: #c724b1 !important;        /* 强制紫红色 */
            font-family: 'Segoe UI', 'Arial Unicode MS', 'Bravura', 'Quivira', 'Symbola', sans-serif;
            display: inline-block;
            vertical-align: middle;
        }

        /* 基础音符大小（用于未特别指定的场合） */
        .music-note {
            font-size: 1.8rem;        /* 从1.5rem增大到1.8rem */
            margin-right: 0.3rem;
        }
        .rest-symbol {
            font-size: 1.9rem;        /* 从1.6rem增大到1.9rem */
            margin-right: 0.3rem;
        }
        
        /* 放大标题区域的音符 (Our Value 那一行) */
        .value-section .music-note {
            font-size: 2.2rem !important;     /* 显著放大 */
            margin-right: 0.4rem;
            vertical-align: middle;
        }
        
        /* 放大UL区块的两个标题音符 (Recognized / Listed... 和 What if...) */
        .rule-item h4 .music-note,
        .rule-item h4 .rest-symbol {
            font-size: 2.2rem !important;     /* 明显放大 */
            margin-right: 0.4rem;
            vertical-align: sub;               /* 微调对齐，让大音符位置更舒服 */
        }
        
        /* UL区块大标题的左侧音符 (𝄞 UL 508 & UL 508A) */
        .exp-title .music-note {
            font-size: 2.4rem !important;      /* 更大一些，作为区块标识 */
            margin-right: 0.4rem;
            line-height: 1;
        }

        .rule-item .badge-fail {
            background: #ffebe6;
            color: #b33f2f;
            padding: 0.18rem 0.72rem;
            border: 1px solid #d97c6e;
            font-weight: 500;
            font-size: 0.72rem;
        }

        .hr-rule {
            height: 2px;
            background: repeating-linear-gradient(90deg, #0D7C90 0px, #0D7C90 8px, transparent 8px, transparent 16px);
            margin: 1.8rem 0;
        }

        /* 底部流程标签 */
        div[style*="display:flex; gap:1rem;"] {
            gap: 0.9rem !important;
            margin: 2.7rem 0 0.9rem !important;
        }
        div[style*="display:flex; gap:1rem;"] span {
            padding: 0.45rem 1.35rem !important;
        }
        .system-container > div:last-child {
            font-size: 0.81rem !important;
            margin-top: 1.8rem !important;
        }