:root {
            --bg: #04140e;
            --surface: #0a2420;
            --surface-hover: #0f362f;
            --accent: #34d399;
            --accent-hover: #10b981;
            --accent2: #fbbf24;
            --text: #effdf5;
            --muted: #8fb3a3;
            --font-head: 'Montserrat', sans-serif;
            --font-body: 'Lora', serif;
            --container-width: 1100px;
            --transition: all 0.3s ease;
        }

        /* RESET & BASE */
        * { 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;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, h4, .font-head {
            font-family: var(--font-head);
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--text);
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        p { margin-bottom: 1.2rem; }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* BUTTONS */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-family: var(--font-head);
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            text-align: center;
            min-height: 44px;
            border: 2px solid transparent;
            transition: var(--transition);
        }
        .btn-primary {
            background-color: var(--accent);
            color: var(--bg);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            color: var(--bg);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(52, 211, 153, 0.3);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-secondary:hover {
            background-color: rgba(52, 211, 153, 0.1);
            color: var(--accent);
        }
        .btn-large {
            padding: 16px 32px;
            font-size: 1.1rem;
        }

        /* HEADER (Exact match structure styling) */
        header {
            background-color: rgba(4, 20, 14, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(52, 211, 153, 0.1);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            gap: 24px;
        }
        .nav-links a {
            font-family: var(--font-head);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .nav-links a:hover { color: var(--accent); }
        .header-ctas { display: flex; gap: 12px; }
        .header-ctas .btn { padding: 8px 16px; font-size: 0.85rem; min-height: 38px; }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 5px;
            min-height: 44px;
            min-width: 44px;
        }

        /* HERO BANNER */
        .hero {
            padding: 60px 0;
            background: linear-gradient(180deg, rgba(10, 36, 32, 0.8) 0%, var(--bg) 100%);
            border-bottom: 1px solid rgba(52, 211, 153, 0.1);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%; left: 50%;
            width: 800px; height: 800px;
            background: radial-gradient(circle, rgba(52,211,153,0.05) 0%, rgba(0,0,0,0) 70%);
            transform: translateX(-50%);
            pointer-events: none;
        }
        .breadcrumb {
            font-family: var(--font-head);
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 24px;
            text-shadow: 0 4px 12px rgba(0,0,0,0.5);
            letter-spacing: -0.5px;
        }
        .meta-chips {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .meta-chips span {
            background-color: var(--surface);
            border: 1px solid rgba(143, 179, 163, 0.2);
            color: var(--muted);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-family: var(--font-head);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
        }
        .meta-chips span::before {
            content: '•';
            color: var(--accent2);
            margin-right: 8px;
            font-size: 1.2rem;
        }

        /* MAIN ARTICLE & SECTIONS */
        article { padding: 40px 0 80px; }

        .intro-block {
            background-color: var(--surface);
            padding: 40px;
            border-radius: 12px;
            border-left: 4px solid var(--accent2);
            margin-bottom: 60px;
            font-size: 1.1rem;
            color: var(--text);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .content-section {
            margin-bottom: 70px;
        }
        .content-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            color: var(--accent);
            margin-bottom: 24px;
            position: relative;
            display: inline-block;
        }
        .content-section p {
            color: var(--muted);
            font-size: 1.05rem;
        }
        .content-section p a {
            color: var(--text);
            border-bottom: 1px dashed var(--accent);
            font-weight: 600;
        }
        .content-section p a:hover {
            color: var(--accent);
            border-bottom-style: solid;
        }

        /* STEP LIST (H2 #1) */
        .step-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-top: 32px;
            counter-reset: step-counter;
        }
        .step-list li {
            background: linear-gradient(145deg, var(--surface) 0%, rgba(10,36,32,0.4) 100%);
            border: 1px solid rgba(52,211,153,0.1);
            padding: 30px 24px;
            border-radius: 12px;
            position: relative;
            counter-increment: step-counter;
            transition: var(--transition);
        }
        .step-list li:hover {
            transform: translateY(-5px);
            border-color: rgba(52,211,153,0.3);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .step-list li::before {
            content: "0" counter(step-counter);
            display: block;
            font-family: var(--font-head);
            font-size: 3rem;
            font-weight: 800;
            color: rgba(251, 191, 36, 0.15); /* Faded accent2 */
            position: absolute;
            top: -10px;
            right: 15px;
            line-height: 1;
        }
        .step-list li {
            font-family: var(--font-head);
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            z-index: 1;
        }

        /* TWO COL LAYOUT (H2 #3) */
        .two-col-text {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        /* SECURITY BOX (H2 #4) */
        .security-box {
            background-image: radial-gradient(circle at top right, rgba(52,211,153,0.08) 0%, transparent 50%);
            border: 1px solid rgba(143, 179, 163, 0.15);
            padding: 40px;
            border-radius: 16px;
        }

        /* FAQ SECTION */
        .faq-wrapper {
            margin-top: 40px;
        }
        details {
            background-color: var(--surface);
            margin-bottom: 16px;
            border-radius: 8px;
            border: 1px solid rgba(255,255,255,0.05);
            transition: var(--transition);
        }
        details[open] {
            border-color: rgba(52,211,153,0.3);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }
        summary {
            padding: 20px 24px;
            font-family: var(--font-head);
            font-weight: 600;
            font-size: 1.1rem;
            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: '+';
            font-size: 1.5rem;
            color: var(--accent);
            font-weight: 400;
            transition: transform 0.3s;
        }
        details[open] summary::after {
            content: '−';
            color: var(--accent2);
        }
        details p {
            padding: 0 24px 24px;
            margin: 0;
            color: var(--muted);
        }

        /* RELATED LINKS */
        .related-links {
            padding: 60px 0;
            border-top: 1px solid rgba(255,255,255,0.05);
            text-align: center;
        }
        .related-links h3 {
            color: var(--muted);
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 30px;
        }
        .links-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .links-grid a {
            background-color: var(--surface);
            padding: 12px 24px;
            border-radius: 30px;
            font-family: var(--font-head);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            border: 1px solid rgba(52,211,153,0.1);
        }
        .links-grid a:hover {
            background-color: var(--accent);
            color: var(--bg);
            border-color: var(--accent);
        }

        /* FINAL CTA */
        .final-cta {
            background: linear-gradient(135deg, var(--surface) 0%, #061c18 100%);
            padding: 60px 40px;
            border-radius: 20px;
            text-align: center;
            margin: 40px auto 0;
            border: 1px solid rgba(251, 191, 36, 0.2);
            position: relative;
            overflow: hidden;
        }
        .final-cta::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
        }
        .final-cta h2 {
            font-size: 2.2rem;
            margin-bottom: 16px;
        }
        .final-cta p {
            color: var(--muted);
            font-size: 1.1rem;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
        }

        /* FOOTER (Exact match structure styling) */
        footer {
            background-color: #020a07;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(52, 211, 153, 0.1);
            font-family: var(--font-head);
        }
        .footer-top {
            text-align: center;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .footer-tagline {
            color: var(--muted);
            max-width: 500px;
            margin: 0 auto;
            font-family: var(--font-body);
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px 24px;
            margin-bottom: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        .footer-links a {
            color: var(--text);
            font-size: 0.9rem;
            font-weight: 600;
        }
        .footer-links a:hover { color: var(--accent); }
        .footer-bottom {
            text-align: center;
            color: rgba(143, 179, 163, 0.5);
            font-size: 0.85rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 30px;
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .two-col-text { grid-template-columns: 1fr; gap: 16px; }
        }
        @media (max-width: 768px) {
            .header-inner { position: relative; }
            .mobile-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px; left: 0; right: 0;
                background-color: var(--surface);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .nav-links.active { display: flex; }
            .header-ctas { display: none; }
            .header-ctas.active {
                display: flex;
                position: absolute;
                top: 260px; left: 0; right: 0;
                background-color: var(--surface);
                padding: 0 20px 20px;
                flex-direction: column;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .intro-block { padding: 24px; }
            .security-box { padding: 24px; }
            .cta-buttons { flex-direction: column; }
            .final-cta { padding: 40px 20px; }
        }
        @media (max-width: 390px) {
            .hero { padding: 40px 0; }
            .meta-chips { flex-direction: column; align-items: center; gap: 8px; }
            .meta-chips span { width: 100%; justify-content: center; }
            .step-list { grid-template-columns: 1fr; }
            .links-grid a { width: 100%; text-align: center; }
            .footer-links { flex-direction: column; align-items: center; text-align: center; }
        }


/* 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; }