:root {
            /* Palette */
            --bg: #0a0726;
            --surface: #171238;
            --surface-hover: #1f194a;
            --accent: #fbbf24;
            --accent-hover: #f59e0b;
            --accent2: #818cf8;
            --text: #f2f0ff;
            --muted: #a5a1c9;
            --border: rgba(251, 191, 36, 0.15);

            /* Typography */
            --font-display: 'Bebas Neue', sans-serif;
            --font-body: 'Sora', sans-serif;

            /* Layout */
            --header-height: 80px;
            --container-w: 1200px;
            --radius: 8px;
            --transition: all 0.3s ease;
        }

        /* Reset & Base */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        h1, h2, h3, .brand {
            font-family: var(--font-display);
            font-weight: normal;
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.5rem;
            font-family: var(--font-body);
            font-weight: 600;
            font-size: 0.875rem;
            border-radius: var(--radius);
            cursor: pointer;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: var(--transition);
            min-height: 44px;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--accent);
            color: var(--bg);
            border: 2px solid var(--accent);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--bg);
            box-shadow: 0 0 15px rgba(251, 191, 36, 0.4);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-secondary:hover {
            background-color: rgba(251, 191, 36, 0.1);
        }
        .btn-lg {
            padding: 1rem 2rem;
            font-size: 1rem;
        }

        /* HEADER (A1 Styles) */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background-color: rgba(10, 7, 38, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .brand {
            font-size: 2rem;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        nav ul {
            display: none;
            list-style: none;
            gap: 1.5rem;
        }
        nav a {
            color: var(--text);
            font-size: 0.875rem;
            font-weight: 300;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        nav a:hover {
            color: var(--accent);
        }
        .header-actions {
            display: none;
            gap: 1rem;
        }
        .mobile-toggle {
            display: block;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 1.5rem;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background-color: var(--surface);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1rem;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a:not(.btn) {
            color: var(--text);
            font-size: 1rem;
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        /* HERO SECTION */
        .hero {
            padding: calc(var(--header-height) + 4rem) 0 4rem;
            background: radial-gradient(circle at top right, #171238 0%, #0a0726 60%);
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.5;
        }
        .breadcrumb {
            font-size: 0.75rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4.5rem);
            color: #ffffff;
            margin-bottom: 1.5rem;
            max-width: 900px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.5);
        }
        .hero h1 span {
            color: var(--accent);
        }
        .meta-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .chip {
            background-color: rgba(23, 18, 56, 0.8);
            border: 1px solid var(--border);
            color: var(--muted);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 300;
            letter-spacing: 0.5px;
        }

        /* MAIN CONTENT */
        .page-content {
            padding: 4rem 1.5rem;
            max-width: 900px; /* Optimal reading width */
        }

        /* Intro Block */
        .intro-block {
            font-size: 1.125rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 4rem;
            padding: 2rem;
            background-color: var(--surface);
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        /* Content Sections */
        .content-section {
            margin-bottom: 4rem;
        }
        .content-section h2 {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border);
            display: inline-block;
        }
        .content-section p {
            margin-bottom: 1.25rem;
            color: var(--muted);
        }
        .content-section p:last-child {
            margin-bottom: 0;
        }
        .content-section a {
            color: var(--accent2);
            border-bottom: 1px solid transparent;
        }
        .content-section a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* Specialized Section Layouts */
        /* Section 2: Bet Types Grid */
        .bet-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .bet-card {
            background: var(--surface);
            padding: 2rem;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .bet-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        }
        .bet-card p {
            margin: 0;
        }

        /* Section 4: Flow Timeline */
        .flow-timeline {
            border-left: 2px solid var(--border);
            padding-left: 2rem;
            margin-left: 1rem;
            margin-top: 2rem;
        }
        .flow-timeline p {
            position: relative;
            margin-bottom: 2rem;
        }
        .flow-timeline p::before {
            content: '';
            position: absolute;
            left: -2.4rem;
            top: 0.5rem;
            width: 12px;
            height: 12px;
            background-color: var(--bg);
            border: 2px solid var(--accent);
            border-radius: 50%;
        }

        /* Section 5: Lists */
        .custom-list {
            list-style: none;
            margin: 2rem 0;
            padding: 2rem;
            background: rgba(23, 18, 56, 0.5);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .custom-list li {
            position: relative;
            padding-left: 2rem;
            margin-bottom: 1rem;
            color: var(--text);
        }
        .custom-list li:last-child {
            margin-bottom: 0;
        }
        .custom-list li::before {
            content: '♦';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent);
            font-size: 1.2rem;
            line-height: 1.5;
        }

        /* FAQ Section */
        .faq-section {
            margin: 4rem 0;
            padding: 3rem;
            background-color: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .faq-section h2 {
            border-bottom: none;
            margin-bottom: 2rem;
            text-align: center;
            display: block;
        }
        details {
            margin-bottom: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        details:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        summary {
            font-family: var(--font-display);
            font-size: 1.25rem;
            color: var(--text);
            padding: 1.25rem 0;
            cursor: pointer;
            list-style: none;
            position: relative;
            padding-right: 2rem;
            letter-spacing: 0.5px;
        }
        summary::-webkit-details-marker {
            display: none;
        }
        summary::after {
            content: '+';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 1.5rem;
            font-family: var(--font-body);
            transition: var(--transition);
        }
        details[open] summary::after {
            content: '−';
        }
        details[open] summary {
            color: var(--accent);
        }
        details p {
            padding: 0 0 1.5rem 0;
            color: var(--muted);
        }

        /* Related Pages */
        .related-pages {
            margin: 4rem 0;
            text-align: center;
        }
        .related-pages h3 {
            font-size: 2rem;
            margin-bottom: 2rem;
            color: var(--text);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }
        .related-card {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-family: var(--font-display);
            font-size: 1.25rem;
            color: var(--text);
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .related-card:hover {
            background-color: var(--surface-hover);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }

        /* Final CTA */
        .final-cta {
            text-align: center;
            padding: 4rem 2rem;
            background: linear-gradient(135deg, #171238 0%, #0a0726 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-top: 4rem;
            position: relative;
            overflow: hidden;
        }
        .final-cta::before, .final-cta::after {
            content: '';
            position: absolute;
            width: 100px;
            height: 4px;
            background: var(--accent);
            opacity: 0.5;
        }
        .final-cta::before { top: 20px; left: 50%; transform: translateX(-50%); }
        .final-cta::after { bottom: 20px; left: 50%; transform: translateX(-50%); }
        .final-cta h2 {
            font-size: 2.5rem;
            color: var(--text);
            margin-bottom: 1rem;
        }
        .final-cta p {
            color: var(--muted);
            margin-bottom: 2.5rem;
            font-size: 1.125rem;
        }
        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* FOOTER (A2 Styles) */
        footer {
            background-color: #07051a;
            padding: 4rem 0 2rem;
            border-top: 1px solid var(--border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        .footer-brand {
            display: block;
            margin-bottom: 1rem;
        }
        footer p {
            color: var(--muted);
            font-size: 0.875rem;
            max-width: 400px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-links a {
            color: var(--muted);
            font-size: 0.875rem;
            width: calc(50% - 0.5rem);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            color: var(--muted);
            font-size: 0.75rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

        /* Breakpoints */
        @media (min-width: 768px) {
            .bet-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 2fr;
            }
            .footer-links a {
                width: auto;
                margin-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            nav ul, .header-actions {
                display: flex;
            }
            .mobile-toggle {
                display: none;
            }
            .page-content {
                padding: 5rem 1.5rem;
            }
        }


/* 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; }