:root {
            /* Palette */
            --bg: #050e16;
            --surface: #0c1e2e;
            --surface-light: #152d44;
            --accent: #ffc857;
            --accent-hover: #e6b44e;
            --accent2: #22d3ee;
            --accent2-hover: #1cb9d1;
            --text: #f0faff;
            --muted: #8fadc2;

            /* Typography */
            --font-display: 'Montserrat', sans-serif;
            --font-body: 'Lora', serif;

            /* Geometry */
            --radius-sm: 12px;
            --radius-md: 24px;
            --radius-lg: 32px;
            --radius-pill: 999px;
            --container-w: 1000px;

            /* Motif */
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --border-playful: 2px dashed rgba(34, 211, 238, 0.3);
        }

        /* Reset & Base */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: var(--font-body);
            line-height: 1.7;
            font-size: 17px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, .logo, .btn, .nav-links a, .meta-chip, .summary-title {
            font-family: var(--font-display);
        }
        a { color: var(--accent2); text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: var(--accent); }
        .container { max-width: var(--container-w); margin: 0 auto; padding: 0 20px; }

        /* Buttons */
        .btn {
            display: inline-flex; align-items: center; justify-content: center;
            padding: 12px 24px; border-radius: var(--radius-pill);
            font-weight: 700; font-size: 0.95rem; text-transform: uppercase;
            letter-spacing: 0.5px; cursor: pointer; min-height: 44px;
            transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
        }
        .btn:active { transform: scale(0.98); }
        .btn-primary {
            background: var(--accent); color: #4a3500; border: none;
            box-shadow: 0 4px 15px rgba(255, 200, 87, 0.3);
        }
        .btn-primary:hover { background: var(--accent-hover); box-shadow: 0 6px 20px rgba(255, 200, 87, 0.4); color: #4a3500; }
        .btn-secondary {
            background: transparent; color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-secondary:hover { background: rgba(255, 200, 87, 0.1); }

        /* Header (Part A1 styling) */
        header {
            background: rgba(5, 14, 22, 0.95);
            backdrop-filter: blur(10px);
            position: sticky; top: 0; z-index: 100;
            border-bottom: 1px solid rgba(143, 173, 194, 0.1);
            padding: 15px 0;
        }
        .nav-container { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.8rem; font-weight: 900; color: var(--text); letter-spacing: -1px; display: flex; align-items: center; gap: 8px;}
        .logo span { color: var(--accent); }
        .nav-links { display: flex; gap: 24px; }
        .nav-links a { color: var(--text); font-weight: 500; font-size: 0.9rem; padding: 8px 0; }
        .nav-links a:hover { color: var(--accent2); }
        .nav-actions { display: flex; gap: 12px; }
        .mobile-toggle {
            display: none; background: transparent; border: none;
            color: var(--text); font-size: 1.8rem; cursor: pointer;
            min-width: 44px; min-height: 44px;
        }

        /* Hero Banner (Creative Content Area) */
        .hero {
            position: relative;
            padding: 60px 20px 80px;
            background: radial-gradient(circle at 10% 20%, rgba(34, 211, 238, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(255, 200, 87, 0.08) 0%, transparent 40%),
                        var(--surface);
            border-bottom: var(--border-playful);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            text-align: center;
            overflow: hidden;
            margin-bottom: 40px;
        }
        /* Carnival Bubbles / Confetti */
        .hero::before, .hero::after {
            content: ''; position: absolute; border-radius: 50%; opacity: 0.5; z-index: 0;
        }
        .hero::before {
            width: 120px; height: 120px; border: 4px solid var(--accent2);
            top: -20px; left: -30px;
        }
        .hero::after {
            width: 60px; height: 60px; background: var(--accent);
            bottom: 20px; right: 5%; filter: blur(2px);
        }
        .hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
        .breadcrumb {
            font-family: var(--font-display); font-size: 0.85rem; font-weight: 500;
            color: var(--muted); margin-bottom: 24px;
            display: inline-block; background: rgba(5, 14, 22, 0.5);
            padding: 6px 16px; border-radius: var(--radius-pill);
        }
        h1 {
            font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.2;
            color: var(--text); margin-bottom: 24px; font-weight: 800;
            text-shadow: 0 4px 12px rgba(0,0,0,0.5);
        }
        .meta-chips { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
        .meta-chip {
            background: rgba(34, 211, 238, 0.1); color: var(--accent2);
            padding: 6px 16px; border-radius: var(--radius-pill);
            font-size: 0.8rem; font-weight: 600; border: 1px solid rgba(34, 211, 238, 0.3);
            display: flex; align-items: center; gap: 6px;
        }

        /* Main Article */
        .article-content { max-width: 800px; margin: 0 auto 60px; }

        .intro-box {
            background: linear-gradient(135deg, var(--surface), var(--surface-light));
            padding: 32px; border-radius: var(--radius-md);
            border-left: 6px solid var(--accent);
            font-size: 1.15rem; color: var(--text); margin-bottom: 40px;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .intro-box::before {
            content: '✨'; position: absolute; top: -15px; right: 20px; font-size: 2rem;
        }

        .section-block { margin-bottom: 48px; }
        h2 {
            font-size: 1.8rem; color: var(--accent); margin-bottom: 20px;
            display: flex; align-items: center; gap: 12px;
        }
        h2::before {
            content: ''; display: block; width: 12px; height: 12px;
            background: var(--accent2); border-radius: 50%;
            box-shadow: 0 0 10px var(--accent2);
        }
        p { margin-bottom: 20px; color: #d1e4f3; }

        /* Links inside text */
        .article-content p a {
            color: var(--accent2); font-weight: 600; border-bottom: 1px dashed var(--accent2);
        }
        .article-content p a:hover { color: var(--accent); border-bottom-color: var(--accent); }

        /* Custom List */
        .feature-list {
            list-style: none; padding: 20px 0; display: grid; gap: 16px;
        }
        .feature-list li {
            position: relative; padding: 16px 20px 16px 50px;
            background: var(--surface); border-radius: var(--radius-sm);
            border: 1px solid rgba(143, 173, 194, 0.1);
            font-family: var(--font-display); font-weight: 500; font-size: 0.95rem;
            color: var(--text);
        }
        .feature-list li::before {
            content: '🎈'; position: absolute; left: 16px; top: 50%;
            transform: translateY(-50%); font-size: 1.2rem;
        }

        /* FAQ Section */
        .faq-section {
            background: var(--surface); padding: 40px;
            border-radius: var(--radius-lg); border: var(--border-playful);
            margin-top: 60px;
        }
        .faq-section h2 { justify-content: center; margin-bottom: 30px; }
        .faq-section h2::before { display: none; }
        details {
            background: var(--bg); margin-bottom: 16px;
            border-radius: var(--radius-sm); border: 1px solid rgba(34, 211, 238, 0.2);
            overflow: hidden; transition: all 0.3s ease;
        }
        details[open] { border-color: var(--accent); box-shadow: 0 4px 15px rgba(255,200,87,0.1); }
        summary {
            padding: 20px; cursor: pointer; font-family: var(--font-display);
            font-weight: 700; font-size: 1.1rem; color: var(--text);
            display: flex; justify-content: space-between; align-items: center;
            list-style: none;
        }
        summary::-webkit-details-marker { display: none; }
        summary::after {
            content: '+'; color: var(--accent2); font-size: 1.5rem; font-weight: 400;
        }
        details[open] summary::after { content: '−'; color: var(--accent); }
        details p { padding: 0 20px 20px; margin: 0; color: var(--muted); }

        /* Related Pages Block */
        .related-nav {
            margin: 60px 0; padding: 40px 0; border-top: 1px solid rgba(143,173,194,0.1);
            text-align: center;
        }
        .related-nav h3 {
            font-size: 1.4rem; color: var(--text); margin-bottom: 24px;
        }
        .related-grid {
            display: flex; flex-wrap: wrap; justify-content: center; gap: 16px;
        }
        .related-card {
            background: var(--surface); border: 1px solid rgba(255,200,87,0.2);
            padding: 16px 24px; border-radius: var(--radius-md);
            font-family: var(--font-display); font-weight: 700; font-size: 1rem;
            color: var(--accent); display: flex; align-items: center; gap: 10px;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        .related-card::before { content: '🎪'; }
        .related-card:hover {
            background: var(--accent); color: #4a3500;
            transform: translateY(-5px); border-color: var(--accent);
        }

        /* Grand CTA */
        .grand-cta {
            background: linear-gradient(135deg, #0c1e2e 0%, #152d44 100%);
            padding: 60px 20px; text-align: center; border-radius: var(--radius-lg);
            margin: 0 auto 60px; max-width: var(--container-w);
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
            position: relative; overflow: hidden;
        }
        .grand-cta::before {
            content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
            background: radial-gradient(circle, rgba(255,200,87,0.05) 0%, transparent 60%);
            animation: rotate 20s linear infinite; pointer-events: none;
        }
        @keyframes rotate { 100% { transform: rotate(360deg); } }
        .grand-cta h2 { justify-content: center; font-size: 2.2rem; color: var(--text); margin-bottom: 16px; }
        .grand-cta h2::before { display: none; }
        .grand-cta p { font-family: var(--font-display); font-size: 1.1rem; color: var(--accent2); margin-bottom: 32px; }
        .cta-group { display: flex; justify-content: center; gap: 16px; position: relative; z-index: 1; }

        /* Footer (Part A2 styling) */
        footer {
            background: var(--surface); border-top: 1px solid rgba(143, 173, 194, 0.1);
            padding: 60px 0 20px; margin-top: auto;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.5fr 2fr; gap: 40px; margin-bottom: 40px;
        }
        .footer-tagline { color: var(--muted); margin-top: 16px; font-size: 0.95rem; }
        .footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        .footer-links a {
            display: block; color: var(--muted); margin-bottom: 12px; font-size: 0.9rem;
        }
        .footer-links a:hover { color: var(--accent); padding-left: 5px; }
        .footer-bottom {
            text-align: center; padding-top: 20px; border-top: 1px solid rgba(143, 173, 194, 0.1);
            color: var(--muted); font-size: 0.85rem; font-family: var(--font-display);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-links { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-actions { display: none; }
            .mobile-toggle { display: block; }
            /* Mobile Menu Active State */
            header.nav-active .nav-links {
                display: flex; flex-direction: column; position: absolute;
                top: 100%; left: 0; right: 0; background: var(--surface);
                padding: 20px; border-bottom: 1px solid rgba(143,173,194,0.1);
            }
            header.nav-active .nav-actions {
                display: flex; flex-direction: column; position: absolute;
                top: calc(100% + 220px); left: 0; right: 0; background: var(--surface);
                padding: 0 20px 20px; border-bottom: 1px solid rgba(143,173,194,0.1);
            }
            .hero { padding: 40px 15px 60px; border-radius: 0 0 var(--radius-md) var(--radius-md); }
            h1 { font-size: 1.8rem; }
            .intro-box { padding: 24px; font-size: 1.05rem; }
            .faq-section { padding: 24px 15px; }
            .footer-links { grid-template-columns: 1fr 1fr; }
            .cta-group { flex-direction: column; }
            .related-card { width: 100%; justify-content: center; }
        }
        @media (max-width: 390px) {
            .footer-links { grid-template-columns: 1fr; }
            .meta-chips { flex-direction: column; align-items: center; }
            .grand-cta h2 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
        }


/* 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; }