:root {
            --bg: #140d08;
            --surface: #241710;
            --accent: #e8965a;
            --accent2: #f5c542;
            --text: #fef8f0;
            --muted: #b89878;
            --border: rgba(232, 150, 90, 0.2);
            --font-display: 'Oswald', sans-serif;
            --font-body: 'Fira Sans', sans-serif;
            --radius: 4px;
            --transition: all 0.3s ease;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        h1, h2, h3, h4 {
            font-family: var(--font-display);
            font-weight: 600;
            line-height: 1.2;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        p {
            margin-bottom: 1.25rem;
            color: var(--text);
        }

        /* BUTTONS */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.25rem;
            font-family: var(--font-display);
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 1px;
            border-radius: var(--radius);
            min-height: 44px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #c2763e);
            color: #000 !important;
            box-shadow: 0 4px 15px rgba(232, 150, 90, 0.2);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--accent2), var(--accent));
            box-shadow: 0 6px 20px rgba(245, 197, 66, 0.3);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent) !important;
            border: 1px solid var(--accent);
        }

        .btn-secondary:hover {
            background: rgba(232, 150, 90, 0.1);
            color: var(--accent2) !important;
            border-color: var(--accent2);
        }

        /* HEADER (A1 Styles) */
        header {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .brand {
            font-family: var(--font-display);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent) !important;
            letter-spacing: 1px;
        }

        .nav-links {
            display: none;
        }

        .mobile-menu-btn {
            background: transparent;
            border: none;
            color: var(--accent);
            font-size: 1.5rem;
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav {
            display: none;
            background-color: var(--surface);
            border-bottom: 2px solid var(--accent);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            flex-direction: column;
            padding: 1rem;
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }

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

        .mobile-nav a {
            padding: 0.75rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text);
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
                gap: 1.5rem;
                align-items: center;
            }
            .nav-links a {
                font-family: var(--font-display);
                text-transform: uppercase;
                font-size: 0.875rem;
                color: var(--text);
                letter-spacing: 0.5px;
            }
            .nav-links a:hover {
                color: var(--accent);
            }
            .mobile-menu-btn {
                display: none;
            }
        }

        /* HERO / BREADCRUMB */
        .hero-forge {
            position: relative;
            padding: 4rem 0 3rem;
            background: radial-gradient(circle at 80% 20%, #2a1b12 0%, var(--bg) 60%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .hero-forge::before {
            content: '';
            position: absolute;
            top: 0; right: 0; bottom: 0; left: 0;
            background-image: linear-gradient(rgba(232, 150, 90, 0.03) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(232, 150, 90, 0.03) 1px, transparent 1px);
            background-size: 30px 30px;
            pointer-events: none;
        }

        .breadcrumb {
            font-size: 0.875rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
            font-family: var(--font-body);
            position: relative;
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            color: var(--accent2);
            margin-bottom: 1rem;
            text-shadow: 0 2px 10px rgba(245, 197, 66, 0.1);
        }

        .meta-chips {
            display: flex;
            gap: 0.75rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .chip {
            background: rgba(232, 150, 90, 0.1);
            border: 1px solid rgba(232, 150, 90, 0.3);
            color: var(--muted);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
        }

        .chip::before {
            content: '♦';
            color: var(--accent);
            margin-right: 6px;
            font-size: 0.6rem;
        }

        .intro-lead {
            font-size: 1.125rem;
            color: var(--text);
            border-left: 3px solid var(--accent);
            padding-left: 1.5rem;
            background: linear-gradient(90deg, rgba(36, 23, 16, 0.8) 0%, transparent 100%);
            padding-top: 1rem;
            padding-bottom: 1rem;
        }

        /* MAIN ARTICLE CONTENT */
        .article-content {
            padding: 4rem 0;
            display: flex;
            flex-direction: column;
            gap: 4rem;
        }

        .forge-section {
            position: relative;
        }

        .forge-section h2 {
            font-size: 1.75rem;
            color: var(--accent);
            border-bottom: 1px solid var(--border);
            padding-bottom: 0.75rem;
            margin-bottom: 1.5rem;
            display: inline-block;
            padding-right: 2rem;
        }

        .forge-section h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background: var(--accent);
        }

        .text-grid {
            display: grid;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .text-grid.two-cols {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* TACTICAL LIST */
        .tactical-list {
            list-style: none;
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        @media (min-width: 768px) {
            .tactical-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .tactical-list li {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 1.25rem 1.25rem 1.25rem 3rem;
            position: relative;
            border-radius: var(--radius);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .tactical-list li:hover {
            border-color: var(--accent);
            box-shadow: 0 4px 12px rgba(232, 150, 90, 0.05);
        }

        .tactical-list li::before {
            content: '⯁';
            position: absolute;
            left: 1.25rem;
            top: 1.25rem;
            color: var(--accent2);
            font-size: 1rem;
            line-height: 1.5;
        }

        /* STEP BY STEP PANEL */
        .step-panel {
            background: var(--surface);
            padding: 2rem;
            border-radius: var(--radius);
            border-top: 3px solid var(--accent2);
            position: relative;
        }

        .step-panel p {
            position: relative;
            z-index: 2;
        }

        /* FAQ SECTION */
        .faq-wrapper {
            background: var(--surface);
            padding: 3rem 2rem;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .faq-wrapper h2 {
            text-align: center;
            border: none;
            padding: 0;
            margin-bottom: 2rem;
            display: block;
        }
        .faq-wrapper h2::after { display: none; }

        details {
            background: var(--bg);
            border: 1px solid var(--border);
            margin-bottom: 1rem;
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        details[open] {
            border-color: var(--accent);
            box-shadow: 0 0 15px rgba(232, 150, 90, 0.1);
        }

        summary {
            padding: 1.25rem;
            font-family: var(--font-display);
            font-weight: 500;
            font-size: 1.1rem;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        summary::after {
            content: '+';
            color: var(--accent);
            font-size: 1.5rem;
            font-weight: 300;
            transition: transform 0.3s ease;
        }

        details[open] summary::after {
            transform: rotate(45deg);
            color: var(--accent2);
        }

        details p {
            padding: 0 1.25rem 1.25rem;
            margin: 0;
            color: var(--muted);
            border-top: 1px solid rgba(255,255,255,0.02);
            padding-top: 1rem;
        }

        /* RELATED PAGES MATRIX */
        .related-matrix {
            padding: 4rem 0;
            border-top: 1px solid var(--border);
        }

        .related-matrix h3 {
            text-align: center;
            color: var(--muted);
            font-size: 1.25rem;
            margin-bottom: 2rem;
        }

        .matrix-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        .matrix-link {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 0.75rem 1.5rem;
            border-radius: 30px;
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 0.875rem;
            color: var(--text);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }

        .matrix-link:hover {
            background: var(--accent);
            color: #000;
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        /* GRAND CTA */
        .grand-cta {
            background: linear-gradient(to right, #1a110a, #2a1b12);
            padding: 5rem 1rem;
            text-align: center;
            border-top: 2px solid var(--accent);
            border-bottom: 2px solid var(--accent);
            position: relative;
            overflow: hidden;
        }

        .grand-cta::before {
            content: '';
            position: absolute;
            top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            width: 100%; height: 100%;
            background: radial-gradient(circle, rgba(232, 150, 90, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }

        .grand-cta h2 {
            font-size: 2.5rem;
            color: var(--text);
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }

        .grand-cta p {
            color: var(--muted);
            margin-bottom: 2.5rem;
            font-size: 1.125rem;
            position: relative;
            z-index: 2;
        }

        .cta-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .cta-group .btn {
            min-width: 160px;
            font-size: 1rem;
        }

        /* FOOTER (A2 Styles) */
        footer {
            background-color: var(--surface);
            padding: 4rem 0 2rem;
            text-align: center;
        }

        .footer-brand {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 1rem;
        }

        .footer-tagline {
            color: var(--muted);
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 0.95rem;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem 1.5rem;
            margin-bottom: 3rem;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-links a {
            color: var(--text);
            font-size: 0.875rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .copyright {
            color: var(--muted);
            font-size: 0.875rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 2rem;
        }

        /* RESPONSIVE ADJUSTMENTS */
        @media (max-width: 767px) {
            .hero-content h1 { font-size: 2rem; }
            .grand-cta h2 { font-size: 2rem; }
            .article-content { padding: 3rem 0; gap: 3rem; }
        }


/* 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; }