:root {
            /* Palette: Copper-Forge */
            --bg: #140d08;
            --surface: #241710;
            --surface-hover: #312017;
            --accent: #e8965a;
            --accent-dark: #cc783c;
            --accent2: #f5c542;
            --text: #fef8f0;
            --muted: #b89878;
            --border: #4a3322;

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

            /* Layout */
            --container-w: 1024px; /* Slightly narrower for reading focus */
            --header-h: 70px;
        }

        /* 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;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: var(--accent2); }
        ul, ol { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-family: var(--font-display);
            text-transform: uppercase;
            font-weight: 600;
            line-height: 1.2;
            color: var(--text);
        }
        h1 { font-size: 2.5rem; margin-bottom: 1rem; letter-spacing: 1px; }
        h2 { font-size: 1.75rem; margin-bottom: 1.25rem; color: var(--accent2); display: flex; align-items: center; gap: 10px; }
        h2::before {
            content: '';
            display: inline-block;
            width: 24px;
            height: 4px;
            background: var(--accent);
        }
        h3 { font-size: 1.25rem; margin-bottom: 1rem; }
        p { margin-bottom: 1.25rem; font-size: 1.05rem; }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 1.5rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            font-weight: 600;
            letter-spacing: 0.5px;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            min-height: 44px;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #000;
            box-shadow: 0 4px 15px rgba(232, 150, 90, 0.2);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--accent2), var(--accent));
            color: #000;
            box-shadow: 0 6px 20px rgba(245, 197, 66, 0.3);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-secondary:hover {
            background: rgba(232, 150, 90, 0.1);
            color: var(--accent2);
            border-color: var(--accent2);
        }

        /* HEADER & FOOTER (Matching Homepage constraints visually) */
        header {
            background-color: rgba(20, 13, 8, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            align-items: center;
            height: var(--header-h);
        }
        .brand {
            font-family: var(--font-display);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent2);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-right: 2rem;
        }
        .brand:hover { color: var(--accent); }
        .nav-links {
            display: none;
            align-items: center;
            gap: 1.5rem;
        }
        .nav-links a {
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 0.9rem;
            color: var(--text);
            font-weight: 500;
        }
        .nav-links a:hover { color: var(--accent); }
        .mobile-menu-btn {
            display: block;
            margin-left: auto;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }
        .mobile-nav {
            display: none;
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 1rem 20px;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            font-family: var(--font-display);
            text-transform: uppercase;
            font-weight: 500;
            color: var(--text);
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--border);
            display: block;
        }
        .mobile-nav a:last-child { border-bottom: none; }

        footer {
            background-color: var(--surface);
            border-top: 2px solid var(--border);
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-brand {
            font-family: var(--font-display);
            font-size: 2rem;
            color: var(--accent2);
            margin-bottom: 1rem;
            text-transform: uppercase;
            font-weight: 700;
        }
        .footer-tagline { color: var(--muted); margin-bottom: 2rem; max-width: 400px; }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            margin-bottom: 3rem;
        }
        .footer-links a { color: var(--text); font-size: 0.9rem; }
        .footer-links a:hover { color: var(--accent); }
        .copyright {
            border-top: 1px solid var(--border);
            padding-top: 1.5rem;
            color: var(--muted);
            font-size: 0.875rem;
            text-align: center;
        }

        @media (min-width: 1024px) {
            .nav-links { display: flex; }
            .mobile-menu-btn { display: none; }
            .mobile-nav { display: none !important; }
        }

        /* --- INNER PAGE SPECIFIC STYLES --- */

        /* Hero Banner */
        .page-hero {
            background: radial-gradient(circle at 70% 30%, rgba(232, 150, 90, 0.15) 0%, transparent 60%),
                        var(--bg);
            padding: 4rem 0 3rem;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: linear-gradient(45deg, var(--border) 25%, transparent 25%, transparent 75%, var(--border) 75%, var(--border)), linear-gradient(45deg, var(--border) 25%, transparent 25%, transparent 75%, var(--border) 75%, var(--border));
            background-size: 4px 4px;
            background-position: 0 0, 2px 2px;
            opacity: 0.05;
            pointer-events: none;
        }
        .breadcrumb {
            font-size: 0.875rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .meta-chips {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }
        .meta-chip {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent2);
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .meta-chip::before {
            content: '';
            display: block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }

        /* Main Content Area */
        .content-area {
            padding: 4rem 0;
        }

        /* Intro Block */
        .intro-block {
            font-size: 1.15rem;
            color: var(--text);
            border-left: 4px solid var(--accent);
            padding-left: 1.5rem;
            margin-bottom: 3rem;
            background: linear-gradient(90deg, rgba(232, 150, 90, 0.05) 0%, transparent 100%);
            padding-top: 1rem;
            padding-bottom: 1rem;
        }

        /* Section Cards */
        .section-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
            transition: border-color 0.3s ease;
        }
        .section-card:hover {
            border-color: rgba(232, 150, 90, 0.3);
        }

        /* Custom Lists */
        .custom-list {
            margin: 1.5rem 0;
            padding-left: 0;
        }
        .custom-list li {
            position: relative;
            padding-left: 2rem;
            margin-bottom: 0.75rem;
            color: var(--muted);
        }
        .custom-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            background: var(--accent2);
            transform: rotate(45deg); /* Anvil spark shape */
            box-shadow: 0 0 5px rgba(245, 197, 66, 0.5);
        }

        /* FAQ Section */
        .faq-wrapper {
            margin-top: 3rem;
        }
        details {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 4px;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        details[open] {
            border-color: var(--accent);
            box-shadow: 0 0 15px rgba(232, 150, 90, 0.1);
        }
        summary {
            padding: 1.25rem 1.5rem;
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 500;
            text-transform: uppercase;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
        }
        summary::-webkit-details-marker { display: none; }
        summary::after {
            content: '+';
            color: var(--accent);
            font-size: 1.5rem;
            font-weight: 400;
            transition: transform 0.3s ease;
        }
        details[open] summary::after {
            content: '−';
            color: var(--accent2);
        }
        details p {
            padding: 0 1.5rem 1.25rem;
            color: var(--muted);
            margin: 0;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 1rem;
        }

        /* Related Links Grid */
        .related-links-section {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 1px dashed var(--border);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .related-link-card {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 1.25rem;
            border-radius: 4px;
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            text-transform: uppercase;
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            color: var(--muted);
            position: relative;
            overflow: hidden;
        }
        .related-link-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transition: transform 0.3s ease;
            transform-origin: left;
        }
        .related-link-card:hover {
            background: var(--surface-hover);
            color: var(--text);
            border-color: var(--accent);
        }
        .related-link-card:hover::before {
            transform: scaleX(1);
        }

        /* CTA Block */
        .cta-block {
            margin-top: 4rem;
            background: linear-gradient(to right, var(--surface), #1a110a);
            border: 1px solid var(--accent);
            border-radius: 8px;
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            right: -50px;
            bottom: -50px;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(245, 197, 66, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-title {
            font-size: 2rem;
            color: var(--accent2);
            margin-bottom: 1rem;
        }
        .cta-text {
            color: var(--muted);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.5rem; }
            .section-card { padding: 1.5rem; }
            .page-hero { padding: 3rem 0 2rem; }
            .cta-block { padding: 2rem 1.5rem; }
            .cta-actions { flex-direction: column; width: 100%; }
            .cta-actions .btn { width: 100%; }
        }
        @media (max-width: 390px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.75rem; }
            .meta-chips { flex-direction: column; gap: 0.5rem; }
        }


/* 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; }