:root {
            --bg: #0b0a08;
            --surface: #1c1913;
            --surface-hover: #2a261d;
            --accent: #d98e32;
            --accent-hover: #e5a34f;
            --accent2: #6cb4ee;
            --text: #faf7f0;
            --muted: #a89f91;
            --border: rgba(217, 142, 50, 0.3);

            --font-display: 'Anton', sans-serif;
            --font-body: 'Barlow', sans-serif;

            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 2rem;
            --spacing-xl: 4rem;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-hover);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Typography */
        h1, h2, h3, .font-display {
            font-family: var(--font-display);
            text-transform: uppercase;
            font-weight: normal;
            letter-spacing: 1px;
            color: var(--accent);
            line-height: 1.2;
        }

        h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: var(--spacing-md); }
        h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: var(--spacing-md); }
        h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); margin-bottom: var(--spacing-sm); }
        p { margin-bottom: var(--spacing-md); }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.5rem;
            font-family: var(--font-display);
            font-size: 1.1rem;
            letter-spacing: 1px;
            text-transform: uppercase;
            border: 2px solid transparent;
            min-height: 44px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-primary {
            background-color: var(--accent);
            color: var(--bg);
        }

        .btn-primary:hover {
            background-color: var(--accent-hover);
            color: var(--bg);
            box-shadow: 0 0 15px rgba(217, 142, 50, 0.5);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }

        .btn-secondary:hover {
            background-color: rgba(217, 142, 50, 0.1);
            box-shadow: inset 0 0 10px rgba(217, 142, 50, 0.2);
        }

        /* Header (Exact Match Styling) */
        header {
            background-color: var(--bg);
            border-bottom: 2px solid var(--accent);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: var(--spacing-md) 0;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand {
            font-family: var(--font-display);
            font-size: 2rem;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--accent);
            color: var(--accent);
            font-size: 1.5rem;
            padding: 0.25rem 0.75rem;
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
        }

        .nav-links {
            display: flex;
            gap: var(--spacing-lg);
        }

        .nav-links a {
            font-family: var(--font-display);
            color: var(--text);
            font-size: 1.1rem;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        /* Hero Banner */
        .hero-arena {
            background: radial-gradient(circle at center, #2a1f12 0%, var(--bg) 70%);
            padding: var(--spacing-xl) 0;
            text-align: center;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .hero-arena::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image:
                linear-gradient(rgba(217, 142, 50, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(217, 142, 50, 0.05) 1px, transparent 1px);
            background-size: 30px 30px;
            pointer-events: none;
            opacity: 0.5;
        }

        .breadcrumb {
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: var(--spacing-lg);
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            z-index: 2;
        }

        .hero-arena h1 {
            position: relative;
            z-index: 2;
            text-shadow: 0 4px 10px rgba(0,0,0,0.8);
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .meta-chips {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
            position: relative;
            z-index: 2;
        }

        .chip {
            background-color: var(--surface);
            border: 1px solid var(--accent);
            padding: 0.25rem 0.75rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent2);
            text-transform: uppercase;
            box-shadow: 0 2px 5px rgba(0,0,0,0.5);
        }

        /* Main Content Area */
        .content-arena {
            padding: var(--spacing-xl) var(--spacing-md);
            display: grid;
            gap: var(--spacing-lg);
        }

        .intro-box {
            background-color: var(--surface);
            border-left: 4px solid var(--accent);
            padding: var(--spacing-lg);
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text);
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }

        .intro-box p:last-child {
            margin-bottom: 0;
        }

        .content-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            padding: var(--spacing-lg);
            position: relative;
            box-shadow: 0 4px 15px rgba(0,0,0,0.3);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .content-card:hover {
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        .content-card h2 {
            border-bottom: 1px solid var(--border);
            padding-bottom: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .content-card a {
            text-decoration: underline;
            text-decoration-color: var(--accent);
            text-underline-offset: 4px;
        }

        .content-card a:hover {
            text-decoration-color: var(--accent2);
            color: var(--accent2);
        }

        /* Custom List */
        .arena-list {
            list-style: none;
            margin-top: var(--spacing-md);
        }

        .arena-list li {
            position: relative;
            padding-left: 2rem;
            margin-bottom: var(--spacing-sm);
        }

        .arena-list li::before {
            content: '►';
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent);
            font-size: 0.8rem;
        }

        /* Related Links Block */
        .related-arena {
            background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 100%);
            border: 1px solid var(--accent);
            padding: var(--spacing-lg);
            text-align: center;
            margin: var(--spacing-lg) 0;
        }

        .related-arena h3 {
            margin-bottom: var(--spacing-md);
        }

        .related-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-md);
        }

        .related-link {
            background-color: var(--bg);
            border: 1px solid var(--border);
            padding: 0.75rem 1.5rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 1.1rem;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .related-link:hover {
            background-color: var(--accent);
            color: var(--bg);
            border-color: var(--accent);
        }

        /* FAQ Section */
        .faq-arena {
            margin-top: var(--spacing-xl);
        }

        .faq-arena h2 {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        details {
            background-color: var(--surface);
            border: 1px solid var(--border);
            margin-bottom: var(--spacing-sm);
            transition: all 0.3s ease;
        }

        details[open] {
            border-color: var(--accent);
            box-shadow: 0 4px 15px rgba(217, 142, 50, 0.1);
        }

        summary {
            padding: 1.2rem;
            font-family: var(--font-display);
            font-size: 1.2rem;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            min-height: 44px;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: '+';
            color: var(--accent);
            font-size: 1.5rem;
            line-height: 1;
        }

        details[open] summary::after {
            content: '-';
        }

        details p {
            padding: 0 1.2rem 1.2rem;
            color: var(--muted);
            margin: 0;
        }

        /* CTA Block */
        .cta-arena {
            background: linear-gradient(to right, #1a1208, #2a1f12);
            border-top: 4px solid var(--accent);
            border-bottom: 4px solid var(--accent);
            padding: var(--spacing-xl) var(--spacing-md);
            text-align: center;
            margin-top: var(--spacing-xl);
        }

        .cta-arena h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            margin-bottom: var(--spacing-sm);
        }

        .cta-arena p {
            font-size: 1.2rem;
            color: var(--muted);
            margin-bottom: var(--spacing-lg);
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        /* Footer (Exact Match Styling) */
        footer {
            background-color: var(--surface);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            text-align: center;
            border-top: 1px solid var(--border);
        }

        .footer-brand {
            font-family: var(--font-display);
            font-size: 2.5rem;
            color: var(--muted);
            margin-bottom: var(--spacing-sm);
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
        }

        .footer-tagline {
            color: var(--muted);
            margin-bottom: var(--spacing-lg);
            font-style: italic;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: var(--spacing-lg);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-links a {
            color: var(--text);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 0.25rem 0.5rem;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

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

        .copyright {
            color: var(--muted);
            font-size: 0.85rem;
            border-top: 1px solid var(--border);
            padding-top: var(--spacing-md);
            margin-top: var(--spacing-md);
        }

        /* Media Queries */
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--surface);
                padding: var(--spacing-md) 0;
                border-bottom: 2px solid var(--accent);
                text-align: center;
                gap: 0;
            }

            .nav-links.active {
                display: flex;
            }

            .nav-links a {
                padding: var(--spacing-md);
                display: block;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }

            .meta-chips {
                flex-direction: column;
                align-items: center;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn {
                width: 100%;
            }
        }


/* pipeline image & layout guards */
html, body { overflow-x: clip; }
img { max-width: 100%; height: auto; }
img.site-logo { height: 40px; width: auto; max-width: 240px; object-fit: contain; flex: none; }
header .logo a { display: inline-flex; align-items: center; flex: none; text-decoration: none; }
img.hero-visual { width: 100%; max-width: 560px; height: auto; object-fit: cover; border-radius: 16px; display: block; margin-inline: auto; }
img[class^="strip-"], img[class*=" strip-"] { width: 100%; height: auto; display: block; border-radius: 12px; object-fit: cover; }
/* 合规声明块（zb-disclaimer，全站 footer） */
.zb-disclaimer { margin-top: 18px !important; padding: 14px 0 0 0 !important; border-top: 1px solid rgba(128,128,128,.25) !important; font-size: .72rem !important; line-height: 1.7 !important; opacity: .85 !important; display: block !important; text-align: left !important; width: 100% !important; clear: both !important; }
.zb-disclaimer .zb-18 { display: inline-block !important; padding: 2px 10px !important; border: 1.5px solid currentColor !important; border-radius: 6px !important; font-weight: 800 !important; letter-spacing: 1px !important; margin: 0 0 10px 0 !important; font-size: .78rem !important; }
.zb-disclaimer p { display: block !important; margin: 5px 0 !important; padding: 0 !important; color: inherit !important; font-size: .72rem !important; line-height: 1.7 !important; }
.zb-disclaimer p:last-child { margin-bottom: 0 !important; }