:root {
            /* Palette */
            --bg: #140d08;
            --surface: #241710;
            --accent: #e8965a;
            --accent2: #f5c542;
            --text: #fef8f0;
            --muted: #b89878;

            /* Typography */
            --font-display: 'Oswald', sans-serif;
            --font-body: 'Fira Sans', sans-serif;

            /* Forge Motif Elements */
            --border-copper: 1px solid rgba(232, 150, 90, 0.3);
            --shadow-glow: 0 4px 20px rgba(232, 150, 90, 0.08);
            --radius: 2px; /* Sharp, professional edges */
        }

        /* 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: all 0.3s ease; }
        a:hover { color: var(--accent2); }
        h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; font-weight: 500; }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.25rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-radius: var(--radius);
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            min-height: 44px; /* Touch target */
        }
        .btn-primary {
            background-color: var(--accent);
            color: var(--bg);
            border: 1px solid var(--accent);
        }
        .btn-primary:hover {
            background-color: transparent;
            color: var(--accent);
            box-shadow: var(--shadow-glow);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--text);
            border: 1px solid var(--muted);
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* --- Header Styles (Matching provided structure) --- */
        header {
            background-color: var(--surface);
            border-bottom: var(--border-copper);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            height: 70px;
        }
        .brand {
            font-family: var(--font-display);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .nav-links {
            display: none;
        }
        .mobile-menu-btn {
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            margin-left: auto;
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
        }
        .mobile-nav {
            display: none;
            background-color: var(--surface);
            border-bottom: var(--border-copper);
            padding: 1rem 1.5rem;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 1rem;
            color: var(--text);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(184, 152, 120, 0.1);
        }

        @media (min-width: 1024px) {
            .mobile-menu-btn { display: none; }
            .nav-links {
                display: flex;
                align-items: center;
                gap: 1.5rem;
                margin-left: 2rem;
            }
            .nav-links a:not(.btn) {
                font-family: var(--font-display);
                text-transform: uppercase;
                font-size: 0.9rem;
                color: var(--text);
            }
            .nav-links a:not(.btn):hover {
                color: var(--accent);
            }
        }

        /* --- Page Specific Styles (Copper-Forge Motif) --- */

        /* Hero Banner */
        .hero-banner {
            background: linear-gradient(135deg, #1a100a 0%, #2a1a10 100%);
            border-bottom: var(--border-copper);
            padding: 3rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at 80% 20%, rgba(232, 150, 90, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }
        .breadcrumb {
            font-size: 0.875rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-banner h1 {
            font-size: 2.25rem;
            color: var(--text);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            display: inline-block;
        }
        /* Spark decoration */
        .hero-banner h1::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent);
        }
        .meta-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 1.5rem;
        }
        .chip {
            background: rgba(36, 23, 16, 0.8);
            border: 1px solid rgba(184, 152, 120, 0.3);
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            color: var(--muted);
            border-radius: var(--radius);
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Main Content Area */
        .main-content {
            padding: 3rem 0;
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
        }

        @media (min-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr 300px;
                gap: 4rem;
            }
            .hero-banner h1 { font-size: 3rem; }
        }

        .article-body {
            max-width: 800px;
        }

        /* Typography within article */
        .lead-intro {
            font-size: 1.125rem;
            color: var(--text);
            margin-bottom: 2.5rem;
            padding-left: 1.5rem;
            border-left: 3px solid var(--accent);
            line-height: 1.7;
        }

        .article-body h2 {
            font-size: 1.75rem;
            color: var(--accent2);
            margin: 3rem 0 1.25rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid rgba(184, 152, 120, 0.15);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .article-body h2::before {
            content: '■';
            color: var(--accent);
            font-size: 0.8em;
        }

        .article-body p {
            margin-bottom: 1.5rem;
            color: #dcd0c4; /* Slightly dimmer than main text for readability */
        }

        .article-body a {
            color: var(--accent);
            border-bottom: 1px solid rgba(232, 150, 90, 0.4);
        }
        .article-body a:hover {
            color: var(--accent2);
            border-bottom-color: var(--accent2);
        }

        /* Custom List Styling (Process Steps) */
        .process-list {
            list-style: none;
            counter-reset: step-counter;
            margin: 2rem 0;
            padding: 0;
        }
        .process-list li {
            position: relative;
            padding-left: 3.5rem;
            margin-bottom: 1.5rem;
            min-height: 40px;
            display: flex;
            align-items: center;
            background: var(--surface);
            padding: 1rem 1rem 1rem 4rem;
            border: var(--border-copper);
            border-radius: var(--radius);
        }
        .process-list li::before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            font-family: var(--font-display);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--bg);
            background-color: var(--accent);
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
        }

        /* Highlight Box (for specific sections if needed, applied dynamically via structure) */
        .highlight-box {
            background: rgba(36, 23, 16, 0.5);
            border: 1px solid rgba(245, 197, 66, 0.3); /* accent2 border */
            padding: 1.5rem;
            margin: 2rem 0;
            border-left: 4px solid var(--accent2);
        }

        /* FAQ Accordion */
        .faq-section {
            margin-top: 4rem;
        }
        .faq-section h2 {
            margin-bottom: 2rem;
        }
        details {
            background: var(--surface);
            border: var(--border-copper);
            margin-bottom: 1rem;
            border-radius: var(--radius);
            overflow: hidden;
        }
        summary {
            padding: 1.25rem 1.5rem;
            font-family: var(--font-display);
            font-size: 1.125rem;
            font-weight: 500;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
            transition: background 0.3s ease;
        }
        summary::-webkit-details-marker { display: none; }
        summary::after {
            content: '+';
            color: var(--accent);
            font-size: 1.5rem;
            line-height: 1;
            transition: transform 0.3s ease;
        }
        details[open] summary {
            background: rgba(232, 150, 90, 0.05);
            border-bottom: 1px solid rgba(232, 150, 90, 0.1);
        }
        details[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        details p {
            padding: 1.25rem 1.5rem;
            margin: 0;
            color: #dcd0c4;
        }

        /* Sidebar / Related Links */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: var(--surface);
            border: var(--border-copper);
            padding: 1.5rem;
            border-radius: var(--radius);
        }
        .widget h3 {
            font-size: 1.25rem;
            color: var(--accent2);
            margin-bottom: 1.25rem;
            text-transform: uppercase;
            border-bottom: 1px solid rgba(184, 152, 120, 0.2);
            padding-bottom: 0.5rem;
        }
        .related-links {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .related-links a {
            display: block;
            padding: 0.75rem 1rem;
            background: rgba(20, 13, 8, 0.5);
            border: 1px solid rgba(184, 152, 120, 0.15);
            color: var(--text);
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            position: relative;
            overflow: hidden;
            border-radius: var(--radius);
        }
        .related-links a::before {
            content: '';
            position: absolute;
            left: 0; top: 0; bottom: 0;
            width: 3px;
            background: var(--accent);
            transform: scaleY(0);
            transition: transform 0.3s ease;
            transform-origin: bottom;
        }
        .related-links a:hover {
            background: rgba(232, 150, 90, 0.1);
            border-color: rgba(232, 150, 90, 0.3);
            padding-left: 1.5rem;
        }
        .related-links a:hover::before {
            transform: scaleY(1);
        }

        /* Final CTA Block */
        .cta-forge {
            background: linear-gradient(to right, #241710, #140d08);
            border-top: 2px solid var(--accent);
            border-bottom: 2px solid var(--accent);
            padding: 4rem 1.5rem;
            text-align: center;
            margin-top: 4rem;
            position: relative;
        }
        .cta-forge::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at center, rgba(232, 150, 90, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-forge h2 {
            font-size: 2rem;
            color: var(--text);
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }
        .cta-forge p {
            color: var(--muted);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* --- Footer Styles (Matching provided structure) --- */
        footer {
            background-color: #0a0604;
            padding: 4rem 0 2rem;
            border-top: 1px solid rgba(184, 152, 120, 0.1);
        }
        .footer-brand {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--muted);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
        }
        .footer-tagline {
            color: var(--muted);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            max-width: 400px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(184, 152, 120, 0.1);
        }
        .footer-links a {
            color: #8a735b;
            font-size: 0.875rem;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .copyright {
            color: #5c4d3c;
            font-size: 0.875rem;
        }


/* 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; }