:root {
        --bg: #140505;
        --surface: #260d0d;
        --accent: #ff6b00;
        --accent2: #ffd700;
        --text: #fff5f0;
        --muted: #c28888;
        --font-display: 'Oswald', sans-serif;
        --font-body: 'Fira Sans', sans-serif;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { background-color: var(--bg); color: var(--text); font-family: var(--font-body); line-height: 1.6; overflow-x: hidden; }
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 15px; }
    a { color: var(--accent); text-decoration: none; transition: color 0.3s ease; }
    a:hover { color: var(--accent2); }

    /* HEADER STYLES (Targeting verbatim HTML) */
    header { background-color: var(--surface); border-bottom: 2px solid var(--accent); position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 15px rgba(0,0,0,0.5); }
    .header-inner { display: flex; justify-content: space-between; align-items: center; min-height: 70px; }
    .logo-area { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; text-transform: uppercase; color: var(--text); letter-spacing: 1px; }
    .logo-area img { display: block; }
    .menu-toggle { background: transparent; border: 1px solid var(--accent); color: var(--accent); font-size: 1.5rem; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 4px; cursor: pointer; transition: all 0.3s; }
    .menu-toggle:hover { background: var(--accent); color: var(--bg); }
    nav { position: absolute; top: 100%; left: 0; width: 100%; background-color: var(--surface); border-bottom: 2px solid var(--accent); display: none; }
    nav.active { display: block; }
    nav ul { list-style: none; display: flex; flex-direction: column; }
    nav ul li a { display: block; padding: 15px 20px; font-family: var(--font-display); text-transform: uppercase; font-size: 1.1rem; color: var(--text); border-bottom: 1px solid rgba(255,107,0,0.2); }
    nav ul li a:hover { background-color: rgba(255,107,0,0.1); color: var(--accent2); padding-left: 25px; }

    /* HERO BANNER */
    .hero { background: linear-gradient(135deg, #2a0a0a 0%, var(--bg) 100%); border-bottom: 1px solid var(--accent); padding: 40px 0; position: relative; overflow: hidden; }
    .hero::before { content: ''; position: absolute; top: 0; right: -20%; width: 50%; height: 100%; background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,107,0,0.05) 10px, rgba(255,107,0,0.05) 20px); transform: skewX(-45deg); }
    .breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 20px; display: inline-block; background: rgba(0,0,0,0.5); padding: 5px 15px; border-radius: 20px; border: 1px solid #3a1515; }
    .hero h1 { font-family: var(--font-display); font-size: 2.2rem; line-height: 1.2; text-transform: uppercase; color: var(--text); margin-bottom: 15px; text-shadow: 2px 2px 0px rgba(255,107,0,0.3); position: relative; z-index: 2; }
    .meta-chips { display: flex; gap: 10px; flex-wrap: wrap; position: relative; z-index: 2; }
    .meta-chips span { font-size: 0.85rem; background: var(--surface); border-left: 3px solid var(--accent2); padding: 4px 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; box-shadow: 2px 2px 5px rgba(0,0,0,0.5); }

    /* CONTENT AREA */
    .content-area { padding: 40px 15px; }
    .intro-block { font-size: 1.1rem; font-style: italic; color: #f0d8d8; background: linear-gradient(90deg, rgba(38,13,13,0.8) 0%, transparent 100%); border-left: 4px solid var(--accent); padding: 20px 25px; margin-bottom: 40px; position: relative; }
    .intro-block::after { content: '"'; position: absolute; top: -10px; left: 10px; font-family: var(--font-display); font-size: 4rem; color: rgba(255,107,0,0.2); line-height: 1; }

    .section-block { margin-bottom: 40px; }
    .section-block h2 { font-family: var(--font-display); font-size: 1.6rem; color: var(--accent2); text-transform: uppercase; margin-bottom: 15px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #3a1515; padding-bottom: 8px; }
    .section-block h2::before { content: ''; display: block; width: 12px; height: 12px; background-color: var(--accent); transform: rotate(45deg); }
    .section-block p { margin-bottom: 15px; text-align: justify; }
    .section-block p a { text-decoration: underline; text-decoration-color: var(--muted); text-underline-offset: 3px; font-weight: 500; }
    .section-block p a:hover { text-decoration-color: var(--accent2); }

    /* FEATURE CARDS (List) */
    .mechanic-grid { display: grid; grid-template-columns: 1fr; gap: 15px; margin-top: 20px; }
    .mech-card { background: var(--surface); border: 1px solid #3a1515; padding: 20px; position: relative; overflow: hidden; transition: transform 0.3s; }
    .mech-card:hover { transform: translateY(-5px); border-color: var(--accent); box-shadow: 0 5px 15px rgba(255,107,0,0.15); }
    .mech-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--accent); }
    .mech-card::after { content: '⚙️'; position: absolute; bottom: -10px; right: -10px; font-size: 4rem; opacity: 0.05; filter: grayscale(100%); }
    .mech-card-content { position: relative; z-index: 2; font-size: 0.95rem; }

    /* HIGHLIGHT SECTION */
    .highlight-box { background: rgba(38,13,13,0.5); border: 1px dashed var(--muted); padding: 25px; border-radius: 8px; margin: 30px 0; }
    .highlight-box h2 { border-bottom: none; color: var(--accent); }
    .highlight-box h2::before { background-color: var(--accent2); }

    /* FAQ SECTION */
    .faq-container { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
    details { background: var(--surface); border: 1px solid #3a1515; border-radius: 4px; overflow: hidden; transition: all 0.3s; }
    details[open] { border-color: var(--accent); box-shadow: 0 0 10px rgba(255,107,0,0.1); }
    summary { padding: 18px 20px; font-family: var(--font-display); font-size: 1.1rem; text-transform: uppercase; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: '+'; color: var(--accent); font-size: 1.5rem; font-weight: bold; transition: transform 0.3s; }
    details[open] summary::after { transform: rotate(45deg); color: var(--accent2); }
    details p { padding: 0 20px 20px; margin: 0; color: #d8b8b8; font-size: 0.95rem; border-top: 1px dashed #3a1515; margin-top: 10px; padding-top: 15px; }

    /* RELATED LINKS */
    .pit-stop-nav { background: #1a0707; padding: 30px 20px; border-radius: 8px; margin-top: 50px; text-align: center; border-top: 3px solid var(--accent2); }
    .pit-stop-nav h3 { font-family: var(--font-display); color: var(--text); text-transform: uppercase; margin-bottom: 20px; font-size: 1.3rem; letter-spacing: 1px; }
    .link-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
    .link-grid a { background: var(--surface); border: 1px solid #3a1515; padding: 10px 20px; font-family: var(--font-display); text-transform: uppercase; font-size: 0.9rem; color: var(--muted); border-radius: 30px; }
    .link-grid a:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); transform: scale(1.05); }

    /* FINAL CTA */
    .cta-grand { background: linear-gradient(0deg, rgba(20,5,5,0.9), rgba(20,5,5,0.9)), repeating-linear-gradient(45deg, #260d0d, #260d0d 10px, #140505 10px, #140505 20px); padding: 60px 15px; text-align: center; border-top: 2px solid var(--accent); border-bottom: 2px solid var(--accent); margin-top: 40px; }
    .cta-grand h2 { font-family: var(--font-display); font-size: 2rem; color: var(--accent2); text-transform: uppercase; margin-bottom: 15px; text-shadow: 0 2px 10px rgba(0,0,0,0.8); }
    .cta-grand p { max-width: 600px; margin: 0 auto 30px; font-size: 1.1rem; color: #e0c0c0; }
    .btn-group { display: flex; flex-direction: column; gap: 15px; align-items: center; justify-content: center; }
    .btn { display: inline-flex; justify-content: center; align-items: center; min-width: 200px; min-height: 50px; font-family: var(--font-display); text-transform: uppercase; font-size: 1.1rem; font-weight: 700; letter-spacing: 1px; border-radius: 4px; transition: all 0.3s; cursor: pointer; text-decoration: none; }
    .btn-primary { background: var(--accent); color: var(--bg); border: 2px solid var(--accent); box-shadow: 0 0 15px rgba(255,107,0,0.4); }
    .btn-primary:hover { background: #ff8533; border-color: #ff8533; box-shadow: 0 0 25px rgba(255,107,0,0.6); transform: translateY(-2px); color: var(--bg); }
    .btn-secondary { background: transparent; color: var(--accent2); border: 2px solid var(--accent2); }
    .btn-secondary:hover { background: rgba(255,215,0,0.1); transform: translateY(-2px); }

    /* FOOTER STYLES (Targeting verbatim HTML) */
    footer { background-color: var(--surface); border-top: 4px solid var(--accent); padding: 50px 0 20px; font-family: var(--font-body); margin-top: 0; }
    .footer-top { text-align: center; margin-bottom: 40px; }
    .footer-brand { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; color: var(--accent); text-transform: uppercase; margin-bottom: 10px; letter-spacing: 2px; }
    .footer-tagline { color: var(--muted); font-style: italic; font-size: 1rem; max-width: 600px; margin: 0 auto; }
    .footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; margin-bottom: 40px; padding: 0 15px; }
    .footer-links div { display: flex; flex-direction: column; gap: 12px; }
    .footer-links a { color: #d8b8b8; text-decoration: none; font-size: 0.95rem; transition: color 0.3s; display: inline-block; padding: 2px 0; }
    .footer-links a:hover { color: var(--accent2); padding-left: 5px; }
    .footer-bottom { text-align: center; color: var(--muted); font-size: 0.85rem; border-top: 1px solid rgba(194,136,136,0.2); padding-top: 25px; margin: 0 15px; }

    /* BREAKPOINTS */
    @media (min-width: 768px) {
        .menu-toggle { display: none; }
        nav { display: block; position: static; width: auto; border: none; background: transparent; }
        nav ul { flex-direction: row; gap: 5px; }
        nav ul li a { border: none; padding: 10px 15px; font-size: 1rem; border-radius: 4px; }
        nav ul li a:hover { background-color: rgba(255,107,0,0.1); padding-left: 15px; }
        .hero h1 { font-size: 3rem; }
        .content-area { padding: 60px 15px; }
        .mechanic-grid { grid-template-columns: 1fr 1fr; }
        .btn-group { flex-direction: row; }
        .footer-links { grid-template-columns: repeat(4, 1fr); text-align: left; }
    }

    @media (min-width: 1024px) {
        .hero { padding: 60px 0; }
        .hero h1 { font-size: 3.5rem; }
        .intro-block { padding: 30px 40px; font-size: 1.2rem; }
        .section-block { margin-bottom: 50px; }
        .section-block h2 { font-size: 2rem; }
    }


/* 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; }