:root {
            --bg: #061218;
            --surface: #0d2230;
            --surface-alt: #112b3d;
            --accent: #22d3ee;
            --accent-glow: rgba(34, 211, 238, 0.3);
            --accent2: #a3e635;
            --text: #f0faff;
            --muted: #8fadb8;
            --font-display: 'Chakra Petch', sans-serif;
            --font-body: 'Manrope', sans-serif;
            --radius: 12px;
            --radius-splash: 2px 24px 2px 24px;
            --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;
            overflow-x: hidden;
            -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;
        }

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

        /* --- HEADER (PART A1 Styles) --- */
        header {
            background-color: rgba(13, 34, 48, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(34, 211, 238, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .logo span {
            color: var(--accent);
        }

        .nav-links {
            display: none;
            gap: 24px;
        }

        .nav-links a {
            color: var(--text);
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 15px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .mobile-toggle {
            display: block;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 28px;
            cursor: pointer;
            padding: 5px;
            min-width: 44px;
            min-height: 44px;
        }

        @media (min-width: 1024px) {
            .mobile-toggle { display: none; }
            .nav-links { display: flex; align-items: center; }
        }

        /* Mobile Menu Active State */
        .nav-links.active {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--surface);
            padding: 20px;
            border-bottom: 1px solid rgba(34, 211, 238, 0.2);
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }

        /* --- HERO BANNER --- */
        .hero {
            position: relative;
            padding: 60px 0 80px;
            background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at 50% 0%, var(--accent-glow) 0%, transparent 60%);
            pointer-events: none;
        }

        /* Decorative Wave SVG in Hero */
        .hero-wave {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: auto;
            opacity: 0.1;
            pointer-events: none;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 24px;
            display: inline-block;
            background: rgba(13, 34, 48, 0.5);
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid rgba(143, 173, 184, 0.2);
        }

        .hero h1 {
            font-family: var(--font-display);
            font-size: clamp(28px, 5vw, 48px);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
            position: relative;
            z-index: 1;
        }

        .meta-chips {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            position: relative;
            z-index: 1;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--accent);
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 13px;
            font-family: var(--font-display);
            font-weight: 600;
        }

        .chip svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
        }

        /* --- MAIN CONTENT LAYOUT --- */
        .page-wrapper {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            padding: 40px 0 80px;
            position: relative;
        }

        @media (min-width: 1024px) {
            .page-wrapper {
                grid-template-columns: 1fr 350px;
                align-items: start;
            }
        }

        .main-article {
            min-width: 0;
        }

        /* --- CONTENT TYPOGRAPHY & BLOCKS --- */
        .intro-block {
            font-size: 18px;
            color: var(--text);
            margin-bottom: 40px;
            padding: 24px;
            background: linear-gradient(135deg, var(--surface) 0%, var(--surface-alt) 100%);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
            line-height: 1.8;
        }

        .content-section {
            margin-bottom: 48px;
            position: relative;
        }

        .content-section h2 {
            font-family: var(--font-display);
            font-size: clamp(22px, 3vw, 28px);
            color: var(--accent);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            line-height: 1.3;
        }

        .content-section h2::before {
            content: '';
            display: block;
            width: 24px;
            height: 24px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22a7 7 0 0 0 7-7c0-2-1-3.9-3-5.5s-3.5-4-4-6.5c-.5 2.5-2 4.9-4 6.5C6 11.1 5 13 5 15a7 7 0 0 0 7 7z'/%3E%3C/svg%3E");
            background-size: contain;
            background-repeat: no-repeat;
            flex-shrink: 0;
        }

        .content-section p {
            margin-bottom: 20px;
            color: var(--muted);
            font-size: 16px;
        }

        .content-section p strong {
            color: var(--text);
        }

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

        .content-section a:hover {
            border-bottom-style: solid;
        }

        /* Custom List Styling */
        .feature-list {
            list-style: none;
            margin: 24px 0;
            padding: 0;
            display: grid;
            gap: 16px;
        }

        .feature-list li {
            position: relative;
            padding-left: 40px;
            color: var(--text);
            background: var(--surface);
            padding: 16px 16px 16px 48px;
            border-radius: var(--radius-splash);
            border: 1px solid rgba(143, 173, 184, 0.1);
        }

        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 16px;
            top: 16px;
            color: var(--accent2);
            font-weight: bold;
            font-family: var(--font-display);
        }

        /* --- FAQ SECTION --- */
        .faq-container {
            margin-top: 60px;
        }

        .faq-container h2 {
            font-family: var(--font-display);
            font-size: 28px;
            color: var(--text);
            margin-bottom: 24px;
            text-align: center;
        }

        .faq-container h2 span {
            color: var(--accent);
        }

        details {
            background: var(--surface);
            margin-bottom: 16px;
            border-radius: var(--radius);
            border: 1px solid rgba(34, 211, 238, 0.1);
            overflow: hidden;
            transition: var(--transition);
        }

        details:hover {
            border-color: rgba(34, 211, 238, 0.3);
        }

        summary {
            padding: 20px;
            cursor: pointer;
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
        }

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

        summary::after {
            content: '';
            display: block;
            width: 20px;
            height: 20px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
            background-size: contain;
            background-repeat: no-repeat;
            transition: transform 0.3s;
        }

        details[open] summary::after {
            transform: rotate(180deg);
        }

        details p {
            padding: 0 20px 20px;
            color: var(--muted);
            margin: 0;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 16px;
        }

        /* --- SIDEBAR / RELATED LINKS --- */
        .sidebar {
            position: sticky;
            top: 90px;
        }

        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid rgba(34, 211, 238, 0.15);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            position: relative;
            overflow: hidden;
        }

        .related-card::before {
            content: '';
            position: absolute;
            top: 0; right: 0;
            width: 100px; height: 100px;
            background: radial-gradient(circle at top right, var(--accent-glow), transparent);
            pointer-events: none;
        }

        .related-card h3 {
            font-family: var(--font-display);
            color: var(--accent);
            font-size: 20px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .related-nav {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .related-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: rgba(6, 18, 24, 0.5);
            border-radius: 8px;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid transparent;
            min-height: 44px;
        }

        .related-nav a::before {
            content: '›';
            color: var(--accent);
            font-size: 20px;
            font-family: var(--font-display);
            transition: transform 0.3s;
        }

        .related-nav a:hover {
            background: var(--surface-alt);
            border-color: rgba(34, 211, 238, 0.3);
            color: var(--accent);
        }

        .related-nav a:hover::before {
            transform: translateX(4px);
        }

        /* --- CTA BLOCK --- */
        .cta-grand {
            background: linear-gradient(135deg, #0a1924 0%, var(--surface) 100%);
            padding: 60px 20px;
            text-align: center;
            border-radius: 24px;
            margin: 40px 0;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(163, 230, 53, 0.2);
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .cta-grand::before {
            content: '';
            position: absolute;
            top: -50%; left: -50%; width: 200%; height: 200%;
            background: radial-gradient(circle, rgba(163, 230, 53, 0.05) 0%, transparent 50%);
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate { 100% { transform: rotate(360deg); } }

        .cta-grand h2 {
            font-family: var(--font-display);
            font-size: clamp(24px, 4vw, 36px);
            color: var(--text);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .cta-grand p {
            color: var(--muted);
            margin-bottom: 32px;
            font-size: 16px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 2;
        }

        .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
            border-radius: 8px;
            min-height: 48px;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--accent2);
            color: #061218;
            box-shadow: 0 4px 15px rgba(163, 230, 53, 0.3);
        }

        .btn-primary:hover {
            background: #bef264;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(163, 230, 53, 0.4);
            color: #061218;
        }

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

        .btn-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--text);
            transform: translateY(-2px);
        }

        /* --- FOOTER (PART A2 Styles) --- */
        footer {
            background-color: #040b0f;
            border-top: 1px solid rgba(143, 173, 184, 0.1);
            padding: 60px 0 20px;
            margin-top: 40px;
        }

        .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-brand p {
            color: var(--muted);
            margin-top: 16px;
            font-size: 14px;
        }

        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 24px;
        }

        .footer-links div {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--muted);
            font-size: 14px;
        }

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

        .footer-bottom {
            text-align: center;
            color: var(--muted);
            font-size: 13px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }


/* 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; }