:root {
            --bg: #0c0c0e;
            --surface: #1a1a20;
            --surface-hover: #23232b;
            --accent: #ffd700;
            --accent-glow: rgba(255, 215, 0, 0.2);
            --accent2: #ff4d00;
            --text: #f8f8fa;
            --muted: #9a9aa5;
            --font-display: 'Bebas Neue', sans-serif;
            --font-body: 'Sora', sans-serif;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 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;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent2); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style-position: inside; }

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

        /* Typography */
        h1, h2, h3, .logo { font-family: var(--font-display); font-weight: 400; letter-spacing: 1px; text-transform: uppercase; }
        h1 { font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1.1; margin-bottom: 15px; color: var(--text); }
        h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin-bottom: 20px; color: var(--accent); }
        h3 { font-size: 1.5rem; margin-bottom: 10px; }
        p { margin-bottom: 15px; color: var(--muted); }
        p strong { color: var(--text); }

        /* Header (Part A1 Styles) */
        header {
            background-color: var(--surface);
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            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(--text);
            display: flex;
            align-items: baseline;
        }
        .logo span { color: var(--accent); }
        .nav-links {
            display: flex;
            gap: 25px;
        }
        .nav-links a {
            color: var(--text);
            font-size: 0.9rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 10px 0;
            position: relative;
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background-color: var(--accent); transition: var(--transition);
        }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a:hover { color: var(--accent); }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }

        /* Hero Banner */
        .hero {
            position: relative;
            padding: 60px 0 50px;
            background-color: var(--surface);
            overflow: hidden;
            border-bottom: 3px solid var(--accent2);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: repeating-linear-gradient(
                -45deg,
                transparent,
                transparent 15px,
                rgba(255, 215, 0, 0.04) 15px,
                rgba(255, 215, 0, 0.04) 30px
            );
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-weight: 600;
        }
        .breadcrumb::before {
            content: '';
            display: inline-block;
            width: 12px; height: 12px;
            background-color: var(--accent2);
            transform: skewX(-20deg);
        }
        .meta-chips {
            display: flex;
            gap: 15px;
            margin-top: 25px;
            flex-wrap: wrap;
        }
        .chip {
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.2);
            color: var(--accent);
            padding: 6px 14px;
            font-size: 0.8rem;
            border-radius: 20px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .chip::before {
            content: '';
            display: inline-block;
            width: 6px; height: 6px;
            border-radius: 50%;
            background-color: var(--accent);
        }

        /* Main Layout */
        .layout-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 50px;
            padding: 60px 0;
        }
        @media (min-width: 1024px) {
            .layout-grid { grid-template-columns: 2fr 1fr; align-items: start; }
        }

        /* Intro Section */
        .intro-block {
            background: linear-gradient(135deg, var(--surface) 0%, rgba(26,26,32,0) 100%);
            border-left: 4px solid var(--accent);
            padding: 30px;
            margin-bottom: 40px;
            border-radius: 0 8px 8px 0;
        }
        .intro-block p {
            font-size: 1.1rem;
            color: var(--text);
            margin: 0;
            line-height: 1.8;
        }

        /* Content Sections (Body) */
        .article-body {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }
        .section-card {
            background-color: var(--surface);
            padding: 35px;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .section-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            border-top-color: rgba(255, 215, 0, 0.3);
        }
        .section-number {
            position: absolute;
            top: -20px;
            right: 30px;
            font-family: var(--font-display);
            font-size: 3rem;
            color: rgba(255, 215, 0, 0.1);
            line-height: 1;
            pointer-events: none;
        }
        .section-card h2 {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-card h2::before {
            content: '';
            display: block;
            width: 24px; height: 4px;
            background-color: var(--accent2);
            transform: skewX(-30deg);
        }
        .section-card ul {
            margin-top: 20px;
            padding-left: 0;
            list-style: none;
        }
        .section-card li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 12px;
            color: var(--muted);
        }
        .section-card li::before {
            content: '»';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent);
            font-size: 1.2rem;
            font-family: var(--font-display);
            line-height: 1.4;
        }

        /* FAQ Accordion */
        .faq-wrapper {
            margin-top: 50px;
        }
        .faq-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-header h2 {
            font-size: 3rem;
            color: var(--text);
            margin-bottom: 10px;
        }
        .faq-header h2 span { color: var(--accent); }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        details {
            background-color: var(--surface);
            border-radius: 6px;
            border: 1px solid rgba(255,255,255,0.05);
            overflow: hidden;
        }
        details[open] {
            border-color: rgba(255, 215, 0, 0.3);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        summary {
            padding: 20px 25px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
            transition: var(--transition);
        }
        summary::-webkit-details-marker { display: none; }
        summary:hover { background-color: var(--surface-hover); }
        summary::after {
            content: '+';
            font-family: var(--font-display);
            font-size: 1.8rem;
            color: var(--accent);
            transition: transform 0.3s ease;
            line-height: 0.8;
        }
        details[open] summary::after {
            transform: rotate(45deg);
            color: var(--accent2);
        }
        details[open] summary {
            border-bottom: 1px solid rgba(255,255,255,0.05);
            background-color: rgba(0,0,0,0.2);
        }
        .faq-answer {
            padding: 20px 25px;
            color: var(--muted);
            background-color: var(--bg);
        }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* Sidebar / Related Pages */
        .sidebar {
            position: sticky;
            top: 100px;
        }
        .widget {
            background-color: var(--surface);
            padding: 30px;
            border-radius: 8px;
            border-top: 3px solid var(--accent);
        }
        .widget-title {
            font-size: 1.8rem;
            color: var(--text);
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .related-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .related-links a {
            display: flex;
            align-items: center;
            padding: 12px 15px;
            background-color: var(--bg);
            border-radius: 4px;
            color: var(--text);
            font-weight: 600;
            font-size: 0.9rem;
            border-left: 2px solid transparent;
        }
        .related-links a::before {
            content: '';
            display: inline-block;
            width: 8px; height: 8px;
            background-color: var(--muted);
            margin-right: 12px;
            transform: rotate(45deg);
            transition: var(--transition);
        }
        .related-links a:hover {
            background-color: rgba(255, 215, 0, 0.05);
            border-left-color: var(--accent);
            color: var(--accent);
        }
        .related-links a:hover::before {
            background-color: var(--accent);
            transform: rotate(90deg);
        }

        /* CTA Section */
        .cta-mega {
            background: linear-gradient(45deg, var(--bg) 0%, var(--surface) 100%);
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            position: relative;
            overflow: hidden;
        }
        .cta-mega::after {
            content: '';
            position: absolute;
            bottom: -50px; right: -50px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(2.5rem, 4vw, 3.5rem);
            color: var(--text);
            margin-bottom: 15px;
        }
        .cta-desc {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 35px;
        }
        .btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 15px 35px;
            font-family: var(--font-display);
            font-size: 1.3rem;
            letter-spacing: 1px;
            border-radius: 4px;
            min-width: 180px;
            min-height: 44px;
            text-transform: uppercase;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        .btn::before {
            content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; transition: var(--transition);
        }
        .btn-primary {
            background-color: var(--accent);
            color: #000;
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
        }
        .btn-primary::before { background-color: #fff; transform: scaleX(0); transform-origin: right; }
        .btn-primary:hover::before { transform: scaleX(1); transform-origin: left; }
        .btn-primary:hover { color: #000; box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5); }

        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-secondary::before { background-color: var(--accent); transform: scaleY(0); transform-origin: bottom; }
        .btn-secondary:hover::before { transform: scaleY(1); transform-origin: top; }
        .btn-secondary:hover { color: #000; }

        /* Footer (Part A2 Styles) */
        footer {
            background-color: #070709;
            padding: 60px 0 20px;
            border-top: 2px solid var(--surface);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (min-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 2fr; }
        }
        .footer-tagline {
            color: var(--muted);
            margin-top: 15px;
            font-size: 0.9rem;
            max-width: 300px;
        }
        .footer-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 15px;
        }
        .footer-links-grid a {
            color: var(--muted);
            font-size: 0.85rem;
            display: block;
            padding: 5px 0;
            min-height: 44px; /* Touch target */
            display: flex;
            align-items: center;
        }
        .footer-links-grid a:hover { color: var(--accent); padding-left: 5px; }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.05);
            color: var(--muted);
            font-size: 0.8rem;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--surface);
                flex-direction: column;
                gap: 0;
                border-bottom: 1px solid rgba(255,215,0,0.1);
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
            }
            .nav-links.active { display: flex; }
            .nav-links a { padding: 15px 20px; border-bottom: 1px solid rgba(255,255,255,0.05); }
            .nav-links a::after { display: none; }
            .menu-toggle { display: block; min-width: 44px; min-height: 44px; }
        }
        @media (max-width: 767px) {
            .layout-grid { gap: 30px; padding: 40px 0; }
            .hero { padding: 40px 0 30px; }
            .section-card { padding: 25px; }
            .section-number { font-size: 2rem; top: 10px; right: 15px; }
            .btn-group { flex-direction: column; width: 100%; }
            .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; }