:root {
            --bg: #150a05;
            --surface: #2b1508;
            --surface-light: #3d1f0d;
            --accent: #ffb703;
            --accent2: #fb5607;
            --text: #fff8f0;
            --muted: #c2a08b;

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

            --paito-red: #e63946;
            --paito-blue: #457b9d;
            --paito-green: #2a9d8f;
            --paito-yellow: #e9c46a;
        }

        /* Reset & Base */
        * {
            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;
            background-image:
                linear-gradient(rgba(21, 10, 5, 0.95), rgba(21, 10, 5, 0.95)),
                repeating-linear-gradient(45deg, rgba(255, 183, 3, 0.02) 0, rgba(255, 183, 3, 0.02) 1px, transparent 1px, transparent 20px);
        }

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

        a:hover {
            color: var(--accent2);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Typography */
        h1, h2, h3, .logo, .footer-brand {
            font-family: var(--font-display);
            font-weight: 400;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-family: var(--font-display);
            font-size: 1.1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
            min-height: 44px;
            border: none;
        }

        .btn-primary {
            background-color: var(--accent2);
            color: var(--text);
            box-shadow: 0 4px 0 rgba(0,0,0,0.5);
        }

        .btn-primary:hover {
            background-color: #ff6b26;
            transform: translateY(2px);
            box-shadow: 0 2px 0 rgba(0,0,0,0.5);
            color: var(--text);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }

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

        /* Header (Part A1 Style Match) */
        header {
            background-color: rgba(21, 10, 5, 0.98);
            border-bottom: 1px solid var(--surface);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo {
            font-size: 2rem;
            color: var(--accent);
            letter-spacing: 2px;
        }

        .nav-desktop ul {
            display: none;
            list-style: none;
            gap: 24px;
        }

        .nav-desktop a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .header-ctas {
            display: none;
            gap: 12px;
        }

        .header-ctas .btn {
            padding: 8px 16px;
            font-size: 0.9rem;
        }

        .menu-toggle {
            background: none;
            border: none;
            color: var(--accent);
            font-size: 1.8rem;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
        }

        .nav-mobile {
            display: none;
            background-color: var(--surface);
            padding: 20px;
            border-bottom: 2px solid var(--accent2);
        }

        .nav-mobile.active {
            display: block;
        }

        .nav-mobile ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 20px;
        }

        .nav-mobile a {
            display: block;
            color: var(--text);
            font-size: 1.1rem;
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .nav-mobile .header-ctas {
            display: flex;
            flex-direction: column;
        }

        /* Hero Banner */
        .hero-banner {
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 100%);
            border-bottom: 4px solid var(--accent2);
            position: relative;
            overflow: hidden;
        }

        /* Paito Grid Decorative Element */
        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0; right: 0; bottom: 0; left: 0;
            background-image:
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 30px 30px;
            pointer-events: none;
        }

        .breadcrumb {
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            z-index: 2;
        }

        .hero-banner h1 {
            font-size: 2.5rem;
            color: var(--text);
            line-height: 1.1;
            margin-bottom: 20px;
            text-shadow: 2px 2px 0px #000;
            position: relative;
            z-index: 2;
        }

        .meta-chips {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .chip {
            background-color: rgba(255, 183, 3, 0.1);
            color: var(--accent);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(255, 183, 3, 0.3);
            display: inline-flex;
            align-items: center;
        }

        /* Main Content Area */
        .content-area {
            max-width: 840px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        /* Intro Block */
        .intro-block {
            background-color: var(--surface);
            padding: 24px;
            border-left: 4px solid var(--accent);
            font-size: 1.1rem;
            color: var(--text);
            margin-bottom: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            position: relative;
        }

        /* Paito Decorative Squares */
        .paito-decor {
            display: flex;
            gap: 4px;
            margin-bottom: 15px;
        }
        .paito-decor span {
            width: 12px; height: 12px;
            display: inline-block;
        }

        /* Section Styling */
        section.body-section {
            margin-bottom: 50px;
        }

        .body-section h2 {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--surface-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .body-section h2::before {
            content: '■';
            color: var(--accent2);
            font-size: 1.2rem;
        }

        .body-section p {
            margin-bottom: 16px;
            color: #e0d5cd;
            font-size: 1.05rem;
        }

        .body-section p a {
            border-bottom: 1px dashed var(--accent);
            font-weight: 600;
        }

        /* Custom Lists */
        .body-section ul {
            list-style: none;
            margin: 20px 0;
            padding: 20px;
            background-color: var(--surface);
            border-radius: 4px;
        }

        .body-section ul li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 12px;
            color: var(--text);
        }

        .body-section ul li:last-child {
            margin-bottom: 0;
        }

        /* Colorful bullets for lists to mimic paito */
        .body-section ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 12px;
            height: 12px;
            background-color: var(--muted);
        }

        .body-section:nth-of-type(odd) ul li:nth-child(1n)::before { background-color: var(--paito-red); }
        .body-section:nth-of-type(odd) ul li:nth-child(2n)::before { background-color: var(--paito-blue); }
        .body-section:nth-of-type(odd) ul li:nth-child(3n)::before { background-color: var(--paito-green); }
        .body-section:nth-of-type(odd) ul li:nth-child(4n)::before { background-color: var(--paito-yellow); }

        .body-section:nth-of-type(even) ul li:nth-child(1n)::before { background-color: var(--accent2); }
        .body-section:nth-of-type(even) ul li:nth-child(2n)::before { background-color: var(--accent); }

        /* Warning/Notice style for Section 4 */
        .warning-box {
            background-color: rgba(251, 86, 7, 0.1);
            border: 1px solid var(--accent2);
            padding: 24px;
            border-radius: 4px;
            margin-bottom: 50px;
        }
        .warning-box h2 {
            border-bottom: none;
            margin-bottom: 15px;
            color: var(--accent2);
        }
        .warning-box h2::before {
            content: '▲';
            color: var(--accent);
        }

        /* FAQ Section */
        .faq-section {
            margin-top: 60px;
            margin-bottom: 60px;
        }

        .faq-section h2 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 30px;
            color: var(--text);
        }

        details {
            background-color: var(--surface);
            margin-bottom: 10px;
            border-radius: 4px;
            overflow: hidden;
            border-left: 3px solid var(--surface-light);
            transition: border-color 0.3s ease;
        }

        details:hover, details[open] {
            border-left-color: var(--accent);
        }

        summary {
            padding: 18px 20px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--accent);
        }

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

        summary::after {
            content: '+';
            font-family: var(--font-display);
            font-size: 1.5rem;
            color: var(--muted);
        }

        details[open] summary::after {
            content: '−';
            color: var(--accent2);
        }

        details p {
            padding: 0 20px 20px;
            color: #e0d5cd;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 15px;
        }

        /* Related Links (Data Board Aesthetic) */
        .related-board {
            background-color: #0a0502;
            padding: 40px;
            border: 1px solid var(--surface-light);
            margin-bottom: 60px;
            text-align: center;
        }

        .related-board h2 {
            font-size: 1.5rem;
            color: var(--muted);
            margin-bottom: 24px;
        }

        .link-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
        }

        .link-grid a {
            background-color: var(--surface);
            padding: 15px 25px;
            font-family: var(--font-display);
            font-size: 1.2rem;
            letter-spacing: 1px;
            color: var(--text);
            border: 1px solid var(--surface-light);
            text-transform: uppercase;
        }

        .link-grid a:hover {
            background-color: var(--accent2);
            border-color: var(--accent2);
            color: #fff;
            transform: scale(1.05);
        }

        /* Final CTA */
        .final-cta {
            text-align: center;
            padding: 60px 20px;
            background: linear-gradient(to top, var(--surface), transparent);
            border-top: 1px dashed var(--surface-light);
            margin-bottom: 40px;
        }

        .final-cta h2 {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 15px;
        }

        .final-cta p {
            font-size: 1.1rem;
            color: var(--muted);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .final-cta .cta-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer (Part A2 Style Match) */
        footer {
            background-color: #0a0502;
            border-top: 2px solid var(--accent2);
            padding: 60px 0 30px;
            text-align: center;
        }

        .footer-brand {
            font-size: 2.5rem;
            color: var(--accent);
            margin-bottom: 10px;
            letter-spacing: 2px;
        }

        .footer-tagline {
            color: var(--muted);
            margin-bottom: 30px;
            font-size: 1rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px 25px;
            margin-bottom: 40px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-links a {
            color: var(--text);
            font-size: 0.95rem;
        }

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

        .copyright {
            color: #66554d;
            font-size: 0.85rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 20px;
        }

        /* Media Queries */
        @media (min-width: 768px) {
            .nav-desktop ul, .header-ctas {
                display: flex;
            }
            .menu-toggle {
                display: none;
            }
            .hero-banner h1 {
                font-size: 3.5rem;
            }
            .nav-mobile.active {
                display: none;
            }
        }


/* 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; }