:root {
            --bg: #041214;
            --surface: #0a2226;
            --surface-light: #11363c;
            --accent: #ffd166;
            --accent-glow: rgba(255, 209, 102, 0.3);
            --accent2: #14b8a6;
            --accent2-glow: rgba(20, 184, 166, 0.3);
            --text: #effcff;
            --muted: #8fb0b3;
            --font-display: 'Russo One', sans-serif;
            --font-body: 'Open Sans', sans-serif;
        }

        /* Base Reset */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: var(--font-body); background-color: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }
        a { color: var(--accent2); text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: var(--accent); }
        h1, h2, h3, h4, .brand { font-family: var(--font-display); font-weight: normal; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* Header (Part A1 Stylings) */
        header { background-color: #02090a; border-bottom: 1px solid var(--surface-light); position: sticky; top: 0; z-index: 1000; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; height: 70px; }
        .brand { font-size: 1.5rem; color: var(--text); display: flex; align-items: center; gap: 8px; text-transform: uppercase; letter-spacing: 1px; }
        .brand span { color: var(--accent); }

        .nav-links { display: none; }
        .header-actions { display: flex; gap: 10px; align-items: center; }
        .btn { padding: 10px 18px; border-radius: 4px; font-family: var(--font-display); font-size: 0.85rem; text-transform: uppercase; cursor: pointer; text-align: center; transition: 0.3s; }
        .btn-primary { background: var(--accent); color: #000; border: none; box-shadow: 0 0 10px var(--accent-glow); }
        .btn-primary:hover { background: #ffdf99; box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-2px); }
        .btn-secondary { background: transparent; color: var(--accent2); border: 1px solid var(--accent2); }
        .btn-secondary:hover { background: rgba(20, 184, 166, 0.1); box-shadow: 0 0 15px var(--accent2-glow); }
        .mobile-toggle { display: block; background: none; border: none; color: var(--text); font-size: 1.8rem; cursor: pointer; padding: 5px; }

        .header-actions .btn { display: none; } /* Hidden on very small screens */

        @media (min-width: 1024px) {
            .nav-links { display: flex; gap: 24px; }
            .nav-links a { color: var(--text); font-weight: 600; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.5px; }
            .nav-links a:hover { color: var(--accent2); text-shadow: 0 0 8px var(--accent2-glow); }
            .mobile-toggle { display: none; }
            .header-actions .btn { display: block; }
        }

        /* Mobile Nav Active State */
        .nav-links.active { display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; width: 100%; background: #02090a; padding: 20px; border-bottom: 2px solid var(--accent2); box-shadow: 0 10px 20px rgba(0,0,0,0.5); }

        /* Hero Stadium Banner */
        .hero-stadium {
            position: relative;
            padding: 50px 0 60px;
            background: radial-gradient(circle at 80% 20%, var(--surface-light) 0%, var(--bg) 60%);
            border-bottom: 1px solid var(--surface);
            overflow: hidden;
        }
        .hero-stadium::before {
            content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            background: repeating-linear-gradient(45deg, rgba(20, 184, 166, 0.03) 0px, rgba(20, 184, 166, 0.03) 2px, transparent 2px, transparent 15px);
            z-index: 0; pointer-events: none;
        }
        .hero-stadium-inner { position: relative; z-index: 1; }

        .breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
        .breadcrumb a { color: var(--accent2); }
        .breadcrumb span { color: var(--text); }

        h1 { font-size: clamp(2rem, 5vw, 3.5rem); color: var(--accent); line-height: 1.1; margin-bottom: 20px; text-transform: uppercase; text-shadow: 0 0 20px var(--accent-glow); max-width: 900px; }

        .meta-chips { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
        .chip { background: rgba(20, 184, 166, 0.1); border: 1px solid var(--accent2); padding: 6px 14px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; color: var(--accent2); display: inline-flex; align-items: center; gap: 6px; }
        .chip::before { content: ''; display: inline-block; width: 8px; height: 8px; background: var(--accent2); border-radius: 50%; box-shadow: 0 0 5px var(--accent2); }

        .intro-box { background: linear-gradient(135deg, rgba(10, 34, 38, 0.8) 0%, rgba(4, 18, 20, 0.9) 100%); border-left: 4px solid var(--accent); padding: 25px; border-radius: 0 12px 12px 0; font-size: 1.1rem; color: var(--text); max-width: 900px; position: relative; box-shadow: 10px 10px 30px rgba(0,0,0,0.5); }
        .intro-box::after { content: '✦'; position: absolute; top: 15px; right: 20px; font-size: 2rem; color: var(--surface-light); opacity: 0.5; }

        /* Main Content Arena */
        .content-arena { padding: 60px 0; display: grid; gap: 50px; }

        .stadium-section { position: relative; max-width: 900px; }
        .section-title { font-size: clamp(1.5rem, 3vw, 2rem); color: var(--text); margin-bottom: 25px; padding-bottom: 12px; border-bottom: 1px solid var(--surface-light); position: relative; display: inline-block; width: 100%; }
        .section-title::after { content: ''; position: absolute; left: 0; bottom: -1px; width: 60px; height: 3px; background: var(--accent2); box-shadow: 0 0 10px var(--accent2-glow); }

        .stadium-section p { margin-bottom: 20px; color: #c8e1e4; font-size: 1.05rem; }
        .stadium-section p a { border-bottom: 1px dashed var(--accent2); }
        .stadium-section p a:hover { border-bottom-style: solid; color: var(--accent); }

        /* Custom Lists */
        .ace-list { list-style: none; margin: 25px 0; display: grid; gap: 15px; }
        .ace-list li { position: relative; padding-left: 35px; background: rgba(10, 34, 38, 0.4); padding: 15px 15px 15px 45px; border-radius: 6px; border: 1px solid transparent; transition: 0.3s; }
        .ace-list li:hover { border-color: var(--surface-light); background: rgba(10, 34, 38, 0.8); }
        .ace-list li::before { content: ''; position: absolute; left: 15px; top: 18px; width: 14px; height: 14px; background: var(--accent2); clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%); box-shadow: 0 0 8px var(--accent2-glow); }

        /* Specific Section Stylings */
        /* Golden Card */
        .golden-section .ace-list li { border-left: 3px solid var(--accent); background: linear-gradient(90deg, rgba(255, 209, 102, 0.05) 0%, transparent 100%); }
        .golden-section .ace-list li::before { background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%); }

        /* Combo Multiplier */
        .combo-list li { transform: skewX(-3deg); border-left: 4px solid; }
        .combo-list li:nth-child(1) { border-color: var(--muted); margin-left: 0; }
        .combo-list li:nth-child(2) { border-color: var(--accent2); margin-left: 15px; }
        .combo-list li:nth-child(3) { border-color: var(--accent); margin-left: 30px; }
        @media (max-width: 768px) { .combo-list li { margin-left: 0 !important; transform: none; } }

        /* Strategy Grid */
        .strategy-grid { display: grid; grid-template-columns: 1fr; gap: 15px; margin: 25px 0; list-style: none; }
        @media (min-width: 600px) { .strategy-grid { grid-template-columns: 1fr 1fr; } }
        .strategy-grid li { background: var(--surface); border: 1px solid var(--surface-light); padding: 20px; border-radius: 8px; position: relative; overflow: hidden; padding-left: 20px; }
        .strategy-grid li::before { display: none; } /* reset base list */
        .strategy-grid li::after { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--accent2); }

        /* FAQ Section */
        .faq-arena { margin-top: 20px; max-width: 900px; }
        details { background: var(--surface); margin-bottom: 15px; border: 1px solid var(--surface-light); border-radius: 6px; overflow: hidden; transition: 0.3s; }
        details:hover { border-color: var(--accent2); box-shadow: 0 0 15px rgba(20, 184, 166, 0.1); }
        summary { padding: 20px; font-family: var(--font-display); font-size: 1.1rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--accent); }
        summary::-webkit-details-marker { display: none; }
        summary::after { content: '▼'; font-size: 0.9rem; color: var(--accent2); transition: transform 0.3s; }
        details[open] summary::after { transform: rotate(180deg); }
        details p { padding: 0 20px 20px; margin: 0; color: #c8e1e4; border-top: 1px solid rgba(255,255,255,0.05); margin-top: -5px; padding-top: 15px; }

        /* Related Links Arena */
        .related-arena { margin: 60px 0; padding: 40px; background: var(--surface); border-radius: 12px; border: 1px solid var(--surface-light); position: relative; overflow: hidden; }
        .related-arena::before { content: ''; position: absolute; top: -50px; right: -50px; width: 150px; height: 150px; background: var(--accent2); filter: blur(100px); opacity: 0.2; }
        .related-arena h3 { font-size: 1.5rem; margin-bottom: 25px; text-align: center; }
        .related-grid { display: grid; grid-template-columns: 1fr; gap: 15px; }
        @media (min-width: 768px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }
        .related-item { background: var(--bg); border: 1px solid var(--surface-light); border-radius: 8px; text-align: center; transition: 0.3s; position: relative; overflow: hidden; }
        .related-item a { display: block; padding: 20px; font-family: var(--font-display); font-size: 1.1rem; color: var(--text); z-index: 2; position: relative; }
        .related-item::before { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--accent2); transform: scaleX(0); transition: 0.3s; transform-origin: left; }
        .related-item:hover { transform: translateY(-5px); border-color: var(--accent2); box-shadow: 0 10px 20px rgba(0,0,0,0.3); }
        .related-item:hover::before { transform: scaleX(1); }
        .related-item:hover a { color: var(--accent); }

        /* CTA Arena */
        .cta-arena { text-align: center; padding: 60px 20px; background: linear-gradient(0deg, var(--surface) 0%, var(--bg) 100%); border-top: 2px dashed var(--surface-light); margin-top: 40px; }
        .cta-arena h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: var(--accent); margin-bottom: 15px; text-transform: uppercase; }
        .cta-arena p { font-size: 1.1rem; color: var(--muted); margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-buttons { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
        .btn-large { padding: 15px 30px; font-size: 1.1rem; letter-spacing: 1px; }

        /* Footer (Part A2 Stylings) */
        footer { background-color: #02090a; padding: 50px 0 20px; border-top: 2px solid var(--surface); }
        .footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; margin-bottom: 40px; }
        @media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
        .footer-brand h2 { margin-bottom: 15px; font-size: 2rem; color: var(--text); text-transform: uppercase; }
        .footer-brand span { color: var(--accent); }
        .footer-tagline { color: var(--muted); font-size: 0.95rem; line-height: 1.5; max-width: 300px; }
        .footer-links-group h4 { color: var(--text); margin-bottom: 20px; font-size: 1.1rem; border-bottom: 1px solid var(--surface-light); padding-bottom: 10px; display: inline-block; }
        .footer-links-group a { display: block; color: var(--muted); margin-bottom: 12px; font-size: 0.95rem; }
        .footer-links-group a:hover { color: var(--accent2); transform: translateX(5px); }
        .footer-bottom { text-align: center; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--surface-light); padding-top: 20px; }


/* 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; }