:root {
        --bg: #0a1118;
        --surface: #142230;
        --surface-alt: #1a2c3f;
        --accent: #4dd0ff;
        --accent-glow: rgba(77, 208, 255, 0.2);
        --accent2: #ffd166;
        --text: #f0faff;
        --muted: #8fa8b8;
        --font-display: 'Russo One', sans-serif;
        --font-body: 'Open Sans', sans-serif;
        --radius: 12px;
        --radius-lg: 20px;
        --transition: all 0.3s ease;
    }

    * {
        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;
        overflow-x: hidden;
    }

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

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

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

    /* Typography */
    h1, h2, h3, .logo, .badge-num {
        font-family: var(--font-display);
        font-weight: normal;
        letter-spacing: 0.5px;
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 24px;
        border-radius: 8px;
        font-family: var(--font-display);
        font-size: 14px;
        text-transform: uppercase;
        letter-spacing: 1px;
        cursor: pointer;
        transition: var(--transition);
        min-height: 44px;
        border: none;
    }

    .btn-primary {
        background: var(--accent);
        color: var(--bg);
        box-shadow: 0 4px 15px var(--accent-glow);
    }

    .btn-primary:hover {
        background: #3bc0f0;
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(77, 208, 255, 0.4);
        color: var(--bg);
    }

    .btn-secondary {
        background: transparent;
        color: var(--accent2);
        border: 2px solid var(--accent2);
    }

    .btn-secondary:hover {
        background: rgba(255, 209, 102, 0.1);
        color: var(--accent2);
    }

    /* Header Styles */
    header {
        background-color: rgba(10, 17, 24, 0.95);
        backdrop-filter: blur(10px);
        position: sticky;
        top: 0;
        z-index: 100;
        border-bottom: 1px solid rgba(143, 168, 184, 0.1);
    }

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

    .logo {
        font-size: 24px;
        color: var(--text);
        display: flex;
        align-items: center;
        gap: 8px;
    }

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

    .nav-links {
        display: none;
        gap: 20px;
    }

    .nav-links a {
        color: var(--text);
        font-size: 15px;
        font-weight: 600;
    }

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

    .header-ctas {
        display: none;
        gap: 12px;
    }

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

    .mobile-menu {
        display: none;
        flex-direction: column;
        background-color: var(--surface);
        padding: 20px;
        border-bottom: 1px solid rgba(143, 168, 184, 0.2);
    }

    .mobile-menu a {
        color: var(--text);
        padding: 12px 0;
        font-weight: 600;
        border-bottom: 1px solid rgba(143, 168, 184, 0.1);
    }

    .mobile-menu .header-ctas {
        display: flex;
        flex-direction: column;
        margin-top: 20px;
        gap: 10px;
    }

    /* Hero Section */
    .hero-inner {
        padding: 60px 0 40px;
        background: radial-gradient(circle at 80% 20%, var(--surface-alt) 0%, var(--bg) 70%);
        position: relative;
        border-bottom: 1px solid rgba(77, 208, 255, 0.1);
    }

    .hero-inner::before {
        content: '';
        position: absolute;
        top: 20px;
        right: 10%;
        width: 100px;
        height: 100px;
        background: var(--accent);
        opacity: 0.05;
        clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
        animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
        0% { transform: translateY(0); }
        50% { transform: translateY(-20px); }
        100% { transform: translateY(0); }
    }

    .breadcrumb {
        font-size: 13px;
        color: var(--muted);
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .hero-inner h1 {
        font-size: 32px;
        color: var(--text);
        margin-bottom: 20px;
        line-height: 1.2;
        text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    }

    .meta-chips {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
    }

    .chip {
        background: rgba(77, 208, 255, 0.1);
        color: var(--accent);
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 12px;
        font-weight: 600;
        border: 1px solid rgba(77, 208, 255, 0.2);
        display: inline-flex;
        align-items: center;
    }

    .chip:nth-child(2) {
        background: rgba(255, 209, 102, 0.1);
        color: var(--accent2);
        border-color: rgba(255, 209, 102, 0.2);
    }

    /* Main Content Area */
    .article-container {
        max-width: 850px;
        margin: 0 auto;
        padding: 40px 20px;
    }

    .intro-block {
        background: linear-gradient(145deg, var(--surface) 0%, var(--surface-alt) 100%);
        padding: 30px;
        border-radius: var(--radius-lg);
        border-left: 5px solid var(--accent2);
        margin-bottom: 40px;
        font-size: 16px;
        line-height: 1.8;
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        position: relative;
    }

    .intro-block::after {
        content: '"';
        position: absolute;
        top: 10px;
        right: 20px;
        font-family: var(--font-display);
        font-size: 60px;
        color: rgba(255, 209, 102, 0.1);
        line-height: 1;
    }

    .section-card {
        background: var(--surface);
        border-radius: var(--radius-lg);
        padding: 35px 30px;
        margin-bottom: 30px;
        border: 1px solid rgba(143, 168, 184, 0.05);
        position: relative;
        transition: var(--transition);
        overflow: hidden;
    }

    .section-card:hover {
        transform: translateY(-3px);
        border-color: rgba(77, 208, 255, 0.3);
        box-shadow: 0 15px 35px rgba(0,0,0,0.3), 0 0 20px var(--accent-glow);
    }

    .section-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 100%;
        background: var(--accent);
        opacity: 0.5;
    }

    .section-card:nth-child(even)::before {
        background: var(--accent2);
    }

    .badge-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--accent);
        color: var(--bg);
        font-size: 18px;
        clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
        margin-bottom: 15px;
    }

    .section-card:nth-child(even) .badge-num {
        background: var(--accent2);
    }

    .section-card h2 {
        font-size: 22px;
        color: var(--text);
        margin-bottom: 16px;
        line-height: 1.3;
    }

    .section-card p {
        color: var(--muted);
        margin-bottom: 16px;
        font-size: 15px;
    }

    .section-card p:last-child {
        margin-bottom: 0;
    }

    .section-card p a {
        color: var(--accent2);
        font-weight: 600;
        border-bottom: 1px dashed var(--accent2);
    }

    .section-card p a:hover {
        color: var(--accent);
        border-bottom-color: var(--accent);
    }

    /* Warning Card Style for Last Section */
    .section-card.warning-card {
        background: linear-gradient(to bottom right, var(--surface), #2a1f1a);
    }
    .section-card.warning-card::before {
        background: #ff6b6b;
    }
    .section-card.warning-card .badge-num {
        background: #ff6b6b;
        color: #fff;
    }

    /* FAQ Section */
    .faq-wrapper {
        margin-top: 50px;
        background: var(--surface-alt);
        padding: 40px;
        border-radius: var(--radius-lg);
        border: 1px solid rgba(143, 168, 184, 0.1);
    }

    .faq-wrapper h2 {
        font-size: 24px;
        text-align: center;
        margin-bottom: 30px;
        color: var(--accent);
    }

    details {
        background: var(--bg);
        border-radius: var(--radius);
        margin-bottom: 15px;
        overflow: hidden;
        border: 1px solid rgba(143, 168, 184, 0.1);
    }

    summary {
        padding: 18px 20px;
        font-weight: 600;
        cursor: pointer;
        list-style: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: var(--text);
        transition: var(--transition);
    }

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

    summary::after {
        content: '+';
        font-family: var(--font-display);
        color: var(--accent);
        font-size: 20px;
        transition: transform 0.3s;
    }

    details[open] summary {
        background: rgba(77, 208, 255, 0.05);
        color: var(--accent);
    }

    details[open] summary::after {
        transform: rotate(45deg);
        color: var(--accent2);
    }

    details p {
        padding: 0 20px 20px;
        color: var(--muted);
        font-size: 15px;
        border-top: 1px solid rgba(143, 168, 184, 0.05);
        padding-top: 15px;
    }

    /* Related Links */
    .related-block {
        margin-top: 50px;
    }

    .related-block h2 {
        font-size: 20px;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .related-block h2::before {
        content: '';
        display: block;
        width: 12px;
        height: 12px;
        background: var(--accent2);
        clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }

    .related-link {
        display: block;
        background: var(--surface);
        padding: 15px;
        border-radius: var(--radius);
        text-align: center;
        font-weight: 600;
        font-size: 14px;
        color: var(--text);
        border: 1px solid rgba(143, 168, 184, 0.1);
    }

    .related-link:hover {
        background: var(--surface-alt);
        border-color: var(--accent);
        color: var(--accent);
        transform: translateY(-2px);
    }

    /* CTA Section */
    .cta-mega {
        margin-top: 60px;
        background: linear-gradient(135deg, #102a40 0%, var(--surface) 100%);
        padding: 50px 30px;
        border-radius: var(--radius-lg);
        text-align: center;
        position: relative;
        overflow: hidden;
        border: 1px solid rgba(77, 208, 255, 0.2);
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }

    .cta-mega::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(77, 208, 255, 0.1) 0%, transparent 60%);
        pointer-events: none;
    }

    .cta-mega h2 {
        font-size: 28px;
        color: var(--text);
        margin-bottom: 15px;
    }

    .cta-mega p {
        color: var(--muted);
        margin-bottom: 30px;
        font-size: 16px;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .cta-actions {
        display: flex;
        justify-content: center;
        gap: 15px;
        flex-wrap: wrap;
    }

    /* Footer Styles */
    footer {
        background-color: #05090d;
        padding: 60px 0 20px;
        margin-top: 60px;
        border-top: 1px solid rgba(143, 168, 184, 0.1);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-brand {
        font-family: var(--font-display);
        font-size: 28px;
        color: var(--text);
        margin-bottom: 15px;
    }

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

    .footer-tagline {
        color: var(--muted);
        font-size: 14px;
        max-width: 300px;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

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

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

    .footer-bottom {
        text-align: center;
        padding-top: 20px;
        border-top: 1px solid rgba(143, 168, 184, 0.1);
        color: rgba(143, 168, 184, 0.5);
        font-size: 13px;
    }

    /* Responsive */
    @media (min-width: 768px) {
        .nav-links, .header-ctas {
            display: flex;
        }
        .mobile-toggle {
            display: none;
        }
        .hero-inner h1 {
            font-size: 42px;
        }
        .footer-grid {
            grid-template-columns: 1fr 2fr;
        }
        .footer-links {
            grid-template-columns: repeat(3, 1fr);
        }
        .section-card {
            padding: 40px;
        }
        .cta-mega h2 {
            font-size: 36px;
        }
    }

    @media (min-width: 1024px) {
        .footer-links {
            grid-template-columns: repeat(4, 1fr);
        }
    }


/* 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; }