:root {
            --hbosco-primary: #bb2b31;
            --hbosco-primary-dark: #8e1f24;
            --hbosco-secondary: #2c3e50;
            --hbosco-accent: #f39c12;
            --hbosco-bg-light: #f9fbfd;
            --hbosco-bg-dark: #1a1a2e;
            --hbosco-text-main: #333333;
            --hbosco-text-muted: #666666;
            --hbosco-white: #ffffff;
            --hbosco-border: #e1e8ed;
            --hbosco-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --hbosco-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            line-height: 1.7;
            color: var(--hbosco-text-main);
            background-color: var(--hbosco-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* Typography */
        h1, h2, h3, h4 {
            line-height: 1.3;
            color: var(--hbosco-secondary);
            font-weight: 700;
            white-space: normal;
        }

        h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
        h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 24px; position: relative; padding-bottom: 12px; }
        h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 50px; height: 4px; background: var(--hbosco-primary); }
        p { font-size: clamp(1rem, 1.2vw + 0.2rem, 1.1rem); margin-bottom: 16px; word-break: break-word; overflow-wrap: break-word; }

        /* Layout Components */
        .hbosco-container {
            max-width: var(--hbosco-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

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

        .hbosco-flex-item {
            min-width: 0;
        }

        /* Navigation */
        .hbosco-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--hbosco-border);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .hbosco-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .hbosco-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .hbosco-nav-menu {
            display: flex;
            list-style: none;
            gap: 20px;
        }

        .hbosco-nav-menu a {
            text-decoration: none;
            color: var(--hbosco-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            padding: 8px 4px;
            position: relative;
        }

        .hbosco-nav-menu a:hover, 
        .hbosco-nav-menu a.hbosco-active {
            color: var(--hbosco-primary);
        }

        .hbosco-nav-menu a.hbosco-active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--hbosco-primary);
        }

        /* Hero Section - Split Asymmetric */
        .hbosco-hero {
            padding: 96px 0;
            background: linear-gradient(135deg, #fdfdfd 0%, #f0f4f8 100%);
            position: relative;
            overflow: hidden;
        }

        .hbosco-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 120%;
            background: rgba(187, 43, 49, 0.03);
            transform: skewX(-15deg);
            z-index: 0;
        }

        .hbosco-hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hbosco-hero-text h1 {
            color: var(--hbosco-secondary);
            margin-bottom: 24px;
        }

        .hbosco-hero-text .hbosco-slogan {
            color: var(--hbosco-primary);
            font-weight: 600;
            font-size: 1.2rem;
            margin-bottom: 16px;
            display: block;
        }

        .hbosco-hero-badge {
            display: inline-block;
            background: var(--hbosco-primary);
            color: white;
            padding: 6px 16px;
            border-radius: 4px;
            font-size: 0.85rem;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .hbosco-hero-visual {
            background: var(--hbosco-white);
            padding: 32px;
            border-radius: 16px;
            box-shadow: var(--hbosco-shadow);
            border-left: 8px solid var(--hbosco-primary);
        }

        .hbosco-rule-preview {
            border-bottom: 1px dashed var(--hbosco-border);
            padding-bottom: 12px;
            margin-bottom: 12px;
        }

        .hbosco-rule-preview:last-child { border: none; }

        /* Rules Content Section */
        .hbosco-section {
            padding: 80px 0;
        }

        .hbosco-section-dark {
            background-color: var(--hbosco-secondary);
            color: var(--hbosco-white);
        }

        .hbosco-section-dark h2 {
            color: var(--hbosco-white);
        }

        .hbosco-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        /* Cards Design */
        .hbosco-card {
            background: var(--hbosco-white);
            padding: 40px;
            border-radius: 12px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--hbosco-border);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .hbosco-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            border-color: var(--hbosco-primary);
        }

        .hbosco-card-title {
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: var(--hbosco-primary);
            display: flex;
            align-items: center;
        }

        .hbosco-card-list {
            list-style: none;
            margin-top: 16px;
        }

        .hbosco-card-list li {
            padding: 8px 0;
            border-bottom: 1px solid #f0f0f0;
            font-size: 0.95rem;
            color: var(--hbosco-text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* Intelligence Layers Section */
        .hbosco-intel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            margin-top: 48px;
        }

        .hbosco-intel-box {
            padding: 32px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hbosco-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .hbosco-tag {
            background: rgba(187, 43, 49, 0.2);
            color: var(--hbosco-accent);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            border: 1px solid var(--hbosco-accent);
        }

        /* Use Case Matrix */
        .hbosco-matrix {
            margin-top: 48px;
        }

        .hbosco-matrix-item {
            display: flex;
            background: var(--hbosco-white);
            margin-bottom: 24px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--hbosco-shadow);
        }

        .hbosco-matrix-label {
            background: var(--hbosco-primary);
            color: white;
            padding: 24px;
            writing-mode: vertical-rl;
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            justify-content: center;
            transform: rotate(180deg);
        }

        .hbosco-matrix-body {
            padding: 32px;
            flex: 1;
        }

        .hbosco-matrix-problem {
            color: var(--hbosco-text-muted);
            font-style: italic;
            margin-bottom: 12px;
            display: block;
        }

        /* Protocols Section */
        .hbosco-protocol-flex {
            display: flex;
            gap: 24px;
            margin-top: 40px;
        }

        .hbosco-protocol-card {
            flex: 1;
            min-width: 300px;
            background: #fff;
            padding: 32px;
            border-radius: 16px;
            border-top: 4px solid var(--hbosco-primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .hbosco-endpoint-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .hbosco-endpoint {
            background: #f0f2f5;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.85rem;
            color: var(--hbosco-secondary);
        }

        /* Footer */
        .hbosco-footer {
            background: var(--hbosco-secondary);
            color: #bdc3c7;
            padding: 64px 0 32px;
        }

        .hbosco-footer-content {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 64px;
            margin-bottom: 48px;
        }

        .hbosco-footer-brand h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }

        .hbosco-footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .hbosco-footer-links ul {
            list-style: none;
        }

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

        .hbosco-footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .hbosco-copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 32px;
            text-align: center;
            font-size: 0.9rem;
        }

        /* Mobile Adjustments */
        @media (max-width: 992px) {
            .hbosco-hero-content {
                grid-template-columns: 1fr;
            }
            .hbosco-intel-grid {
                grid-template-columns: 1fr;
            }
            .hbosco-footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hbosco-nav-menu {
                display: none; /* In a real site, add a hamburger menu */
            }
            .hbosco-footer-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hbosco-matrix-item {
                flex-direction: column;
            }
            .hbosco-matrix-label {
                writing-mode: horizontal-tb;
                transform: none;
                padding: 12px;
            }
            .hbosco-section {
                padding: 48px 0;
            }
        }

        /* Buttons */
        .hbosco-btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 6px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .hbosco-btn-primary {
            background: var(--hbosco-primary);
            color: white;
        }

        .hbosco-btn-primary:hover {
            background: var(--hbosco-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(187, 43, 49, 0.3);
        }

        .hbosco-btn-outline {
            background: transparent;
            border: 2px solid var(--hbosco-primary);
            color: var(--hbosco-primary);
            margin-left: 16px;
        }

        .hbosco-btn-outline:hover {
            background: var(--hbosco-primary);
            color: white;
        }