:root {
            --h187-primary: #ef6c00;
            --h187-primary-dark: #e65100;
            --h187-secondary: #263238;
            --h187-bg: #f8f9fa;
            --h187-text: #37474f;
            --h187-white: #ffffff;
            --h187-border: #eceff1;
            --h187-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --h187-radius: 16px;
            --h187-container-width: 1100px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--h187-bg);
            color: var(--h187-text);
            line-height: 1.8;
            word-break: break-word;
            overflow-x: hidden;
        }

        h1, h2, h3 {
            line-height: 1.3;
            word-break: keep-all;
            white-space: normal;
            font-weight: 700;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* Layout Utilities */
        .h187-container {
            max-width: var(--h187-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .h187-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .h187-grid {
            display: grid;
            gap: 32px;
        }

        .h187-section {
            padding: 96px 0;
        }

        /* Navigation */
        .h187-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--h187-border);
            transition: transform 0.3s ease;
        }

        .h187-nav-inner {
            height: 80px;
            align-items: center;
            justify-content: space-between;
        }

        .h187-logo {
            min-width: 0;
        }

        .h187-logo img {
            height: 40px;
            display: block;
        }

        .h187-menu {
            align-items: center;
            list-style: none;
        }

        .h187-menu li {
            margin-left: 24px;
            min-width: 0;
        }

        .h187-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--h187-secondary);
            padding: 8px 0;
            position: relative;
        }

        .h187-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--h187-primary);
            transition: width 0.3s ease;
        }

        .h187-menu a:hover::after,
        .h187-menu a.h187-active::after {
            width: 100%;
        }

        .h187-menu a.h187-active {
            color: var(--h187-primary);
        }

        /* Hero Area - Split Contrast Style */
        .h187-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #263238 0%, #37474f 100%);
            color: var(--h187-white);
            position: relative;
            overflow: hidden;
        }

        .h187-hero::before {
            content: 'UTF-8 GBK UNICODE 乱码 0101';
            position: absolute;
            top: 10%;
            right: -5%;
            font-size: 12rem;
            font-weight: 900;
            opacity: 0.03;
            pointer-events: none;
            white-space: nowrap;
        }

        .h187-hero-content {
            max-width: 800px;
            position: relative;
            z-index: 2;
        }

        .h187-hero h1 {
            font-size: clamp(2.2rem, 4vw + 1rem, 3.8rem);
            margin-bottom: 24px;
            color: var(--h187-primary);
        }

        .h187-hero p {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.3rem);
            opacity: 0.9;
            margin-bottom: 40px;
            max-width: 700px;
        }

        /* Diagnostics Cards */
        .h187-diag-grid {
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .h187-card {
            background: var(--h187-white);
            padding: 40px;
            border-radius: var(--h187-radius);
            box-shadow: var(--h187-shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid transparent;
        }

        .h187-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
            border-color: var(--h187-primary);
        }

        .h187-card-icon {
            width: 56px;
            height: 56px;
            background: rgba(239, 108, 0, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--h187-primary);
            font-size: 1.5rem;
        }

        .h187-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--h187-secondary);
        }

        /* Content Sections */
        .h187-solution-block {
            background: var(--h187-white);
            border-radius: var(--h187-radius);
            padding: 48px;
            margin-bottom: 48px;
            border-left: 6px solid var(--h187-primary);
        }

        .h187-solution-block h2 {
            font-size: 2rem;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .h187-step-list {
            list-style: none;
        }

        .h187-step-item {
            margin-bottom: 32px;
            padding-left: 56px;
            position: relative;
        }

        .h187-step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            background: var(--h187-secondary);
            color: var(--h187-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .h187-code-preview {
            background: #2d3436;
            color: #fab1a0;
            padding: 24px;
            border-radius: 8px;
            font-family: 'Consolas', monospace;
            margin-top: 16px;
            overflow-x: auto;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .h187-highlight {
            color: var(--h187-primary);
            font-weight: 600;
        }

        /* Visualization Section */
        .h187-viz-section {
            background: #f1f4f6;
            border-radius: 32px;
            padding: 64px;
            overflow: hidden;
        }

        .h187-viz-content {
            justify-content: space-between;
            align-items: center;
        }

        .h187-viz-text {
            flex: 1;
            min-width: 300px;
            padding-right: 48px;
        }

        .h187-viz-graphic {
            flex: 1;
            min-width: 300px;
            background: var(--h187-white);
            padding: 32px;
            border-radius: var(--h187-radius);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
        }

        /* FAQ Accordion Style */
        .h187-faq-item {
            border-bottom: 1px solid var(--h187-border);
            padding: 24px 0;
        }

        .h187-faq-q {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--h187-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* Buttons */
        .h187-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .h187-btn-primary {
            background: var(--h187-primary);
            color: var(--h187-white);
            box-shadow: 0 8px 20px rgba(239, 108, 0, 0.3);
        }

        .h187-btn-primary:hover {
            background: var(--h187-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(239, 108, 0, 0.4);
        }

        /* Footer */
        .h187-footer {
            background: var(--h187-secondary);
            color: rgba(255,255,255,0.7);
            padding: 80px 0 40px;
        }

        .h187-footer-brand {
            font-size: 2rem;
            color: var(--h187-white);
            font-weight: 800;
            margin-bottom: 24px;
        }

        .h187-footer-grid {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            margin-bottom: 64px;
        }

        .h187-footer-title {
            color: var(--h187-white);
            font-size: 1.1rem;
            margin-bottom: 24px;
            font-weight: 600;
        }

        .h187-footer-links {
            list-style: none;
        }

        .h187-footer-links li {
            margin-bottom: 12px;
        }

        .h187-footer-links a:hover {
            color: var(--h187-primary);
        }

        .h187-copyright {
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.9rem;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .h187-menu {
                display: none; /* Simplification for brevity, usually a hamburger menu would go here */
            }
            .h187-viz-content {
                flex-direction: column;
            }
            .h187-viz-text {
                padding-right: 0;
                margin-bottom: 40px;
            }
        }

        @media (max-width: 768px) {
            .h187-hero {
                padding-top: 120px;
                text-align: center;
            }
            .h187-hero-content {
                margin: 0 auto;
            }
            .h187-diag-grid {
                margin-top: 32px;
            }
            .h187-section {
                padding: 64px 0;
            }
            .h187-solution-block {
                padding: 24px;
            }
        }