:root {
        --bg: #050e16;
        --surface: #0c1e2e;
        --surface-hover: #132a40;
        --accent: #ffc857;
        --accent-hover: #e6b245;
        --accent2: #22d3ee;
        --text: #f0faff;
        --muted: #8fadc2;
        --font-display: 'Montserrat', sans-serif;
        --font-body: 'Lora', serif;
        --radius-card: 24px;
        --radius-pill: 50px;
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
        font-family: var(--font-body);
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }

    h1, h2, h3, .logo, .btn, .chip, .breadcrumb, summary {
        font-family: var(--font-display);
    }

    a {
        color: var(--accent2);
        text-decoration: none;
        transition: var(--transition);
    }

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

    p { margin-bottom: 1rem; color: var(--text); }
    p:last-child { margin-bottom: 0; }

    .container {
        width: 100%;
        max-width: 1200px;
        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-align: center;
        cursor: pointer;
        min-height: 44px;
        border: 2px solid transparent;
    }

    .btn-primary {
        background-color: var(--accent);
        color: #000;
    }

    .btn-primary:hover {
        background-color: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(255, 200, 87, 0.3);
    }

    .btn-secondary {
        background-color: transparent;
        color: var(--accent2);
        border-color: var(--accent2);
    }

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

    /* Header (Exact Copy Styling) */
    header {
        background-color: 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);
    }

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

    .logo {
        font-size: 1.5rem;
        font-weight: 800;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 8px;
        letter-spacing: -0.5px;
    }

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

    .nav-links { display: none; }
    .nav-actions { display: none; }

    .mobile-toggle {
        background: none;
        border: none;
        color: var(--text);
        font-size: 1.5rem;
        cursor: pointer;
        padding: 8px;
        min-width: 44px;
        min-height: 44px;
    }

    /* Mobile Nav Active State */
    header.nav-active {
        background-color: var(--bg);
    }

    header.nav-active .nav-container {
        flex-wrap: wrap;
        height: auto;
        padding-top: 15px;
        padding-bottom: 15px;
    }

    header.nav-active .nav-links,
    header.nav-active .nav-actions {
        display: flex;
        flex-direction: column;
        width: 100%;
        margin-top: 20px;
        gap: 15px;
    }

    header.nav-active .nav-links a {
        color: var(--text);
        font-weight: 600;
        padding: 10px 0;
        border-bottom: 1px solid rgba(143, 173, 194, 0.1);
    }

    /* Hero Banner */
    .hero-banner {
        position: relative;
        padding: 60px 0 40px;
        background: radial-gradient(circle at 80% 20%, rgba(34, 211, 238, 0.15) 0%, transparent 40%),
                    radial-gradient(circle at 20% 80%, rgba(255, 200, 87, 0.1) 0%, transparent 40%);
        overflow: hidden;
        text-align: center;
    }

    .hero-banner::before, .hero-banner::after {
        content: '';
        position: absolute;
        border-radius: 50%;
        z-index: -1;
    }

    .hero-banner::before {
        width: 150px; height: 150px;
        background: var(--accent);
        filter: blur(80px);
        top: -50px; right: -50px;
        opacity: 0.3;
    }

    .hero-banner::after {
        width: 200px; height: 200px;
        background: var(--accent2);
        filter: blur(100px);
        bottom: -100px; left: -50px;
        opacity: 0.2;
    }

    .breadcrumb {
        font-size: 0.85rem;
        color: var(--muted);
        margin-bottom: 20px;
        display: inline-block;
        background: rgba(12, 30, 46, 0.6);
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        border: 1px solid rgba(143, 173, 194, 0.2);
    }

    .hero-banner h1 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 20px;
        background: linear-gradient(to right, #fff, var(--accent2));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        font-weight: 800;
    }

    .meta-chips {
        display: flex;
        gap: 10px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .chip {
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        padding: 6px 14px;
        background-color: var(--surface);
        border: 1px solid rgba(34, 211, 238, 0.3);
        border-radius: var(--radius-pill);
        color: var(--accent2);
        display: inline-flex;
        align-items: center;
    }

    /* Main Content Area */
    .main-content {
        padding: 20px 0 60px;
        display: flex;
        flex-direction: column;
        gap: 30px;
    }

    /* Intro Card */
    .intro-card {
        background: linear-gradient(145deg, var(--surface), rgba(12, 30, 46, 0.5));
        border-left: 4px solid var(--accent);
        padding: 25px;
        border-radius: 0 var(--radius-card) var(--radius-card) 0;
        font-size: 1.1rem;
        color: #e0f2fe;
        position: relative;
    }

    .intro-card::after {
        content: '"';
        position: absolute;
        top: -10px;
        right: 20px;
        font-family: var(--font-display);
        font-size: 6rem;
        color: rgba(255, 200, 87, 0.1);
        line-height: 1;
    }

    /* Article Sections */
    .content-sections {
        display: grid;
        gap: 30px;
    }

    .card-section {
        background-color: var(--surface);
        padding: 30px;
        border-radius: var(--radius-card);
        border: 1px solid rgba(143, 173, 194, 0.05);
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        position: relative;
        overflow: hidden;
    }

    .card-section::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--accent2), var(--accent));
        opacity: 0.8;
    }

    .card-section h2 {
        font-size: 1.5rem;
        color: #fff;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .card-section h2::before {
        content: '';
        display: inline-block;
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background-color: var(--accent);
        box-shadow: 0 0 10px var(--accent);
    }

    .card-section a {
        text-decoration: underline;
        text-decoration-color: rgba(34, 211, 238, 0.4);
        text-underline-offset: 4px;
        font-weight: 600;
    }

    .card-section a:hover {
        text-decoration-color: var(--accent);
    }

    /* Custom List */
    .custom-list {
        list-style: none;
        margin-top: 20px;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .custom-list li {
        position: relative;
        padding-left: 35px;
        background: rgba(5, 14, 22, 0.4);
        padding: 15px 15px 15px 45px;
        border-radius: 12px;
        border: 1px solid rgba(143, 173, 194, 0.1);
    }

    .custom-list li::before {
        content: '★';
        position: absolute;
        left: 15px;
        top: 15px;
        color: var(--accent2);
        font-size: 1.2rem;
        line-height: 1;
    }

    /* FAQ Section */
    .faq-section {
        margin-top: 20px;
    }

    .faq-section h2 {
        font-size: 1.8rem;
        text-align: center;
        margin-bottom: 30px;
        color: #fff;
    }

    .faq-grid {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    details {
        background-color: var(--surface);
        border-radius: 16px;
        border: 1px solid rgba(143, 173, 194, 0.1);
        overflow: hidden;
    }

    summary {
        padding: 20px;
        font-size: 1.1rem;
        font-weight: 700;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        list-style: none;
        color: #fff;
    }

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

    summary::after {
        content: '+';
        font-size: 1.5rem;
        color: var(--accent2);
        transition: transform 0.3s ease;
    }

    details[open] summary::after {
        content: '−';
        color: var(--accent);
    }

    details p {
        padding: 0 20px 20px;
        color: var(--muted);
    }

    /* Related Links */
    .related-links {
        background: rgba(12, 30, 46, 0.4);
        padding: 40px 30px;
        border-radius: var(--radius-card);
        text-align: center;
        border: 1px dashed rgba(34, 211, 238, 0.3);
    }

    .related-links h3 {
        font-size: 1.3rem;
        margin-bottom: 25px;
        color: #fff;
    }

    .link-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
    }

    .related-pill {
        background-color: var(--bg);
        border: 2px solid var(--accent2);
        color: var(--text);
        padding: 10px 24px;
        border-radius: var(--radius-pill);
        font-family: var(--font-display);
        font-weight: 700;
        text-transform: capitalize;
    }

    .related-pill:hover {
        background-color: var(--accent2);
        color: #000;
        transform: scale(1.05);
    }

    /* Grand CTA */
    .cta-grand {
        background: linear-gradient(135deg, var(--surface) 0%, #0a2136 100%);
        border-radius: var(--radius-card);
        padding: 50px 30px;
        text-align: center;
        position: relative;
        overflow: hidden;
        border: 2px solid rgba(255, 200, 87, 0.2);
        box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }

    .cta-grand::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 {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    .cta-grand h2 {
        font-size: 2rem;
        color: #fff;
        margin-bottom: 15px;
        position: relative;
        z-index: 1;
    }

    .cta-grand p {
        font-size: 1.1rem;
        color: var(--muted);
        margin-bottom: 30px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
        position: relative;
        z-index: 1;
    }

    .cta-actions {
        display: flex;
        gap: 15px;
        justify-content: center;
        position: relative;
        z-index: 1;
        flex-wrap: wrap;
    }

    /* Footer (Exact Copy Styling) */
    footer {
        background-color: var(--surface);
        padding: 60px 0 20px;
        border-top: 1px solid rgba(143, 173, 194, 0.1);
        margin-top: 40px;
    }

    .footer-grid {
        display: grid;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-brand .logo {
        margin-bottom: 15px;
    }

    .footer-tagline {
        color: var(--muted);
        font-size: 0.95rem;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 30px;
    }

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

    .footer-links a {
        color: var(--muted);
        font-family: var(--font-display);
        font-size: 0.9rem;
        font-weight: 500;
    }

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

    /* Breakpoints */
    @media (min-width: 768px) {
        .nav-toggle { display: none; }
        .mobile-toggle { display: none; }

        .nav-links {
            display: flex;
            gap: 24px;
        }

        .nav-links a {
            color: var(--text);
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 0.9rem;
        }

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

        .nav-actions {
            display: flex;
            gap: 12px;
        }

        .hero-banner h1 { font-size: 2.8rem; }
        .hero-banner { padding: 80px 0 50px; }

        .footer-grid {
            grid-template-columns: 1fr 2fr;
        }

        .content-sections {
            grid-template-columns: 1fr 1fr;
        }

        /* Make the first section span full width to break monotony */
        .content-sections .card-section:nth-child(1) {
            grid-column: 1 / -1;
        }
    }

    @media (min-width: 1024px) {
        .hero-banner h1 { font-size: 3.2rem; }
        .intro-card { padding: 35px; font-size: 1.2rem; }
        .card-section { padding: 40px; }
    }


/* 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; }