:root {
            --bg: #0c0c0e;
            --surface: #1a1a20;
            --accent: #ffd700;
            --accent2: #ff4d00;
            --text: #f8f8fa;
            --muted: #9a9aa5;
            --border: #2a2a35;
            --font-display: 'Bebas Neue', sans-serif;
            --font-body: 'Sora', sans-serif;
        }

        * {
            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;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        /* HEADER STYLES */
        header {
            background-color: var(--surface);
            border-bottom: 2px solid var(--accent2);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.5);
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .logo {
            font-family: var(--font-display);
            font-size: 2.2rem;
            color: var(--text);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

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

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

        .nav-links a {
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text);
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }

        /* HERO SECTION */
        .hero {
            position: relative;
            padding: 80px 20px;
            text-align: center;
            background: linear-gradient(180deg, #111115 0%, var(--bg) 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: -50%;
            width: 200%;
            height: 100%;
            background: repeating-linear-gradient(
                45deg,
                transparent,
                transparent 15px,
                rgba(255, 215, 0, 0.02) 15px,
                rgba(255, 215, 0, 0.02) 30px
            );
            z-index: 0;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
        }

        .breadcrumb {
            display: inline-block;
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 20px;
            background: var(--surface);
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }

        .hero h1 {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 5vw, 4rem);
            color: var(--text);
            text-transform: uppercase;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: 1px;
            text-shadow: 3px 3px 0px rgba(255, 77, 0, 0.2);
        }

        .meta-chips {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .chip {
            background: var(--surface);
            border-left: 3px solid var(--accent);
            padding: 6px 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--muted);
            border-radius: 0 4px 4px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }

        /* MAIN CONTENT */
        .main-container {
            max-width: 1024px;
            margin: 0 auto;
            padding: 50px 20px;
        }

        .intro-block {
            font-size: 1.1rem;
            color: var(--text);
            background: var(--surface);
            padding: 40px;
            border-radius: 12px;
            border-top: 4px solid var(--accent2);
            margin-bottom: 50px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.4);
            position: relative;
            text-align: center;
        }

        .intro-block::before {
            content: '❝';
            display: block;
            font-family: var(--font-display);
            font-size: 4rem;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 10px;
            opacity: 0.5;
        }

        .grid-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }

        .card {
            background: #131318;
            padding: 35px;
            border-radius: 12px;
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .card:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .card:hover::before {
            opacity: 1;
        }

        .card-number {
            position: absolute;
            top: -10px;
            right: -10px;
            font-family: var(--font-display);
            font-size: 6rem;
            color: rgba(255,255,255,0.03);
            line-height: 1;
            pointer-events: none;
        }

        .card h2 {
            font-family: var(--font-display);
            font-size: 1.8rem;
            color: var(--text);
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card h2::before {
            content: '';
            display: inline-block;
            width: 14px;
            height: 14px;
            background: var(--accent);
            transform: skewX(-20deg);
        }

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

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

        .card a {
            font-weight: 700;
            border-bottom: 1px dashed var(--accent);
        }

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

        .feature-card {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, #131318 0%, var(--surface) 100%);
        }

        .speed-list {
            list-style: none;
            margin: 25px 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 15px;
        }

        .speed-list li {
            position: relative;
            padding: 15px 15px 15px 45px;
            background: rgba(0,0,0,0.2);
            border-radius: 8px;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 0.95rem;
        }

        .speed-list li::before {
            content: '⚡';
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.2rem;
        }

        /* FAQ SECTION */
        .faq-section {
            margin-bottom: 60px;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 40px;
            color: var(--text);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        details {
            background: var(--surface);
            margin-bottom: 15px;
            border-radius: 8px;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        details[open] {
            border-color: var(--accent);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        summary {
            padding: 20px 25px;
            font-weight: 600;
            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-family: var(--font-display);
            transition: transform 0.3s ease;
        }

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

        details p {
            padding: 0 25px 25px;
            color: var(--muted);
            border-top: 1px solid var(--border);
            margin-top: 5px;
            padding-top: 20px;
        }

        /* RELATED PAGES */
        .related-section {
            background: #111115;
            padding: 40px;
            border-radius: 12px;
            margin-bottom: 60px;
            text-align: center;
            border: 1px dashed var(--border);
        }

        .related-title {
            font-family: var(--font-display);
            font-size: 1.8rem;
            color: var(--muted);
            margin-bottom: 25px;
            text-transform: uppercase;
        }

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

        .link-grid a {
            background: var(--surface);
            padding: 12px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid var(--accent);
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .link-grid a::before {
            content: '›';
            color: var(--accent2);
            font-size: 1.2rem;
            line-height: 1;
        }

        .link-grid a:hover {
            background: var(--accent);
            color: var(--bg);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.2);
        }

        .link-grid a:hover::before {
            color: var(--bg);
        }

        /* CTA SECTION */
        .cta-section {
            background: linear-gradient(135deg, var(--accent2) 0%, var(--accent) 100%);
            padding: 60px 20px;
            border-radius: 16px;
            text-align: center;
            color: var(--bg);
            position: relative;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(255, 77, 0, 0.2);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: -50%;
            width: 200%;
            height: 100%;
            background: repeating-linear-gradient(
                90deg,
                transparent,
                transparent 20px,
                rgba(0,0,0,0.05) 20px,
                rgba(0,0,0,0.05) 40px
            );
            transform: skewX(-15deg);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-family: var(--font-display);
            font-size: clamp(2rem, 4vw, 3.5rem);
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .cta-content p {
            font-weight: 600;
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }

        .btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn {
            padding: 16px 45px;
            font-family: var(--font-display);
            font-size: 1.3rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            min-width: 200px;
            display: inline-block;
        }

        .btn-primary {
            background: var(--bg);
            color: var(--text);
            border: 2px solid var(--bg);
        }

        .btn-primary:hover {
            background: transparent;
            color: var(--bg);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

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

        .btn-secondary:hover {
            background: var(--bg);
            color: var(--text);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        /* FOOTER STYLES */
        footer {
            background: #08080a;
            padding: 60px 20px 20px;
            border-top: 1px solid var(--border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            max-width: 1280px;
            margin: 0 auto;
        }

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

        .footer-tagline {
            color: var(--muted);
            font-size: 0.95rem;
            max-width: 300px;
        }

        .footer-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 12px;
        }

        .footer-links-grid a {
            color: var(--muted);
            font-size: 0.9rem;
        }

        .footer-links-grid a:hover {
            color: var(--accent);
            padding-left: 5px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            margin-top: 50px;
            border-top: 1px solid var(--border);
            color: #555;
            font-size: 0.85rem;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
        }

        /* RESPONSIVE DESIGN */
        @media (max-width: 1024px) {
            .grid-cards {
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--surface);
                padding: 20px;
                border-bottom: 2px solid var(--accent);
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .grid-cards {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-tagline {
                margin: 0 auto;
            }
            .footer-links-grid {
                text-align: left;
            }
        }

        @media (max-width: 390px) {
            .hero { padding: 50px 15px; }
            .main-container { padding: 30px 15px; }
            .intro-block { padding: 25px 15px; font-size: 1rem; }
            .card { padding: 25px 15px; }
            .btn-group { flex-direction: column; width: 100%; }
            .btn { width: 100%; }
        }


/* 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; }