:root {
            /* Palette */
            --bg: #12100a;
            --surface: #232012;
            --surface-light: #322e1a;
            --accent: #f5c542;
            --accent-hover: #d4a731;
            --accent2: #84cc16;
            --text: #fdfaf0;
            --muted: #b8b28f;
            --border: #423c22;

            /* Typography */
            --font-display: 'Teko', sans-serif;
            --font-body: 'Nunito', sans-serif;

            /* Metrics */
            --container: 1200px;
            --content-width: 840px;
            --radius: 8px;
            --radius-lg: 16px;
            --transition: all 0.3s ease;

            /* Motif: Coin Stack Shadow */
            --shadow-stack: 3px 3px 0 var(--accent), 6px 6px 0 rgba(245, 197, 66, 0.2);
            --shadow-stack-sm: 2px 2px 0 var(--accent);
        }

        /* Reset & Base */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: var(--font-body);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-display);
            font-weight: 500;
            line-height: 1.1;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        ul, ol { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 600;
            text-transform: uppercase;
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            min-height: 44px;
            border: none;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--accent);
            color: var(--bg);
            box-shadow: var(--shadow-stack-sm);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 3px 5px 0 var(--accent-hover);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-secondary:hover {
            background-color: rgba(245, 197, 66, 0.1);
        }

        /* =========================================
           HEADER (As per constraints)
           ========================================= */
        header {
            background-color: rgba(18, 16, 10, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo {
            font-family: var(--font-display);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-desktop ul {
            display: flex;
            gap: 24px;
        }
        .nav-desktop a {
            color: var(--text);
            font-family: var(--font-display);
            font-size: 1.3rem;
            text-transform: uppercase;
        }
        .nav-desktop a:hover { color: var(--accent); }
        .header-ctas {
            display: flex;
            gap: 12px;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 2rem;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
        }
        .mobile-nav {
            display: none;
            background-color: var(--surface);
            border-top: 1px solid var(--border);
            padding: 20px;
        }
        .mobile-nav.active { display: block; }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 20px;
        }
        .mobile-nav a {
            font-family: var(--font-display);
            font-size: 1.5rem;
            color: var(--text);
            display: block;
            border-bottom: 1px solid var(--border);
            padding-bottom: 10px;
        }
        .mobile-nav .header-ctas { flex-direction: column; }

        @media (max-width: 1024px) {
            .nav-desktop, .header-inner .header-ctas { display: none; }
            .mobile-menu-btn { display: block; }
        }

        /* =========================================
           PAGE HERO
           ========================================= */
        .page-hero {
            padding: 60px 0;
            background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: radial-gradient(var(--border) 1px, transparent 1px);
            background-size: 20px 20px;
            opacity: 0.3;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--content-width);
            margin: 0 auto;
            text-align: center;
        }
        .breadcrumb {
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: 20px;
            display: inline-block;
            background: rgba(0,0,0,0.5);
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }
        .page-hero h1 {
            font-size: clamp(3rem, 6vw, 4.5rem);
            color: var(--text);
            margin-bottom: 24px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .page-hero h1 span {
            color: var(--accent);
        }
        .meta-chips {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .chip {
            background: var(--surface-light);
            color: var(--muted);
            padding: 6px 14px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            border-left: 3px solid var(--accent2);
            display: inline-flex;
            align-items: center;
        }

        /* =========================================
           MAIN CONTENT AREA
           ========================================= */
        .main-content {
            padding: 60px 0;
        }
        .content-wrapper {
            max-width: var(--content-width);
            margin: 0 auto;
        }

        /* Intro Blockquote */
        .intro-memo {
            background-color: var(--surface);
            padding: 30px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            border-left: 6px solid var(--accent);
            margin-bottom: 50px;
            font-size: 1.1rem;
            color: var(--text);
            position: relative;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }
        .intro-memo::before {
            content: '"';
            font-family: var(--font-display);
            font-size: 6rem;
            position: absolute;
            top: -20px;
            left: 20px;
            color: var(--surface-light);
            opacity: 0.5;
            line-height: 1;
        }
        .intro-memo p { position: relative; z-index: 2; }

        /* Ledger Sections (H2 & Body) */
        .ledger-section {
            margin-bottom: 50px;
        }
        .ledger-section h2 {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border-bottom: 2px dashed var(--border);
            padding-bottom: 10px;
        }
        .ledger-section h2::before {
            content: '';
            display: block;
            width: 24px;
            height: 24px;
            background-color: var(--accent);
            border-radius: 50%;
            box-shadow: inset -2px -2px 0 rgba(0,0,0,0.3), 0 0 0 4px var(--surface);
        }
        .ledger-section p {
            margin-bottom: 16px;
            color: var(--muted);
        }
        .ledger-section p strong { color: var(--text); }
        .ledger-section a {
            color: var(--accent2);
            border-bottom: 1px solid rgba(132, 204, 22, 0.3);
            font-weight: 600;
        }
        .ledger-section a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* Custom List */
        .ledger-list {
            margin: 24px 0;
            padding: 24px;
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .ledger-list li {
            position: relative;
            padding-left: 36px;
            margin-bottom: 16px;
            color: var(--text);
        }
        .ledger-list li:last-child { margin-bottom: 0; }
        .ledger-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 2px;
            width: 22px;
            height: 22px;
            background: var(--accent2);
            color: var(--bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: bold;
        }

        /* Two Column layout for specific sections if needed (using grid for variety) */
        .grid-sections {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-bottom: 50px;
        }
        .grid-sections .ledger-section { margin-bottom: 0; }
        .grid-sections .ledger-section h2 { font-size: 1.8rem; }

        @media (max-width: 768px) {
            .grid-sections { grid-template-columns: 1fr; }
        }

        /* =========================================
           FAQ SECTION
           ========================================= */
        .faq-container {
            margin-top: 60px;
            background: var(--surface);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }
        .faq-title {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 30px;
            color: var(--text);
        }
        details {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
        }
        summary {
            padding: 18px 20px;
            font-family: var(--font-display);
            font-size: 1.4rem;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        summary::-webkit-details-marker { display: none; }
        summary::after {
            content: '+';
            color: var(--accent);
            font-size: 1.5rem;
            transition: transform 0.3s;
        }
        details[open] summary {
            background: var(--surface-light);
            color: var(--accent);
        }
        details[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px 20px;
            color: var(--muted);
            border-top: 1px solid transparent;
        }
        details[open] .faq-answer {
            border-top-color: var(--border);
            padding-top: 20px;
        }

        /* =========================================
           RELATED PAGES NAV
           ========================================= */
        .related-nav {
            margin-top: 60px;
            padding-top: 50px;
            border-top: 2px dashed var(--border);
        }
        .related-nav h2 {
            font-size: 2rem;
            margin-bottom: 24px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }
        .related-grid a {
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: var(--radius);
            font-family: var(--font-display);
            font-size: 1.2rem;
            color: var(--muted);
            text-transform: uppercase;
        }
        .related-grid a:hover {
            background: var(--bg);
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--shadow-stack-sm);
            transform: translateY(-2px);
        }

        /* =========================================
           FINAL CTA
           ========================================= */
        .cta-section {
            margin-top: 80px;
            background: linear-gradient(135deg, var(--surface) 0%, #30280b 100%);
            padding: 60px 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--accent);
            box-shadow: var(--shadow-stack);
        }
        .cta-section h2 {
            font-size: 3rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-actions .btn { min-width: 200px; }

        /* =========================================
           FOOTER (As per constraints)
           ========================================= */
        footer {
            background-color: var(--surface);
            border-top: 2px solid var(--border);
            padding: 60px 0 20px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }
        .footer-tagline {
            color: var(--muted);
            font-size: 0.95rem;
        }
        .footer-links h4 {
            color: var(--text);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--muted);
            font-size: 0.95rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            color: var(--muted);
            font-size: 0.9rem;
        }

        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .page-hero { padding: 40px 0; }
            .faq-container { padding: 20px; }
            .cta-section { padding: 40px 20px; }
        }
        @media (max-width: 390px) {
            .meta-chips { flex-direction: column; align-items: center; }
            .cta-actions { flex-direction: column; }
            .cta-actions .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; }