:root {
    --bg: #140505;
    --surface: #260d0d;
    --accent: #ff6b00;
    --accent-hover: #e56000;
    --accent2: #ffd700;
    --text: #fff5f0;
    --muted: #c28888;
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Fira Sans', sans-serif;
    --container-max: 1024px;
  }

  *, *::before, *::after {
    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;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  /* HEADER STYLES (Targeting provided HTML) */
  header {
    background-color: #0a0202;
    border-bottom: 2px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 100;
  }

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

  .logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  .logo-area img {
    display: block;
  }

  .menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--accent);
    font-size: 2rem;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
  }

  header nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
  }

  header nav a {
    color: var(--text);
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 0.5px;
    padding: 10px 5px;
    display: block;
  }

  header nav a:hover {
    color: var(--accent);
    text-shadow: 0 0 8px rgba(255, 107, 0, 0.5);
  }

  /* HERO BANNER */
  .hero-banner {
    background: radial-gradient(circle at center, var(--surface) 0%, var(--bg) 100%);
    position: relative;
    padding: 60px 0 100px;
    border-bottom: 1px solid rgba(255, 107, 0, 0.2);
    overflow: hidden;
  }

  .hero-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 10px,
      rgba(255, 107, 0, 0.03) 10px,
      rgba(255, 107, 0, 0.03) 20px
    );
    pointer-events: none;
  }

  .breadcrumb {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
  }

  .hero-banner 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;
    text-shadow: 2px 2px 0px #000, 4px 4px 15px rgba(255, 107, 0, 0.6);
    position: relative;
    z-index: 2;
  }

  .meta-chips {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
  }

  .chip {
    background: rgba(38, 13, 13, 0.8);
    border: 1px solid var(--accent);
    color: var(--accent2);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: var(--font-display);
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
  }

  /* MAIN CONTENT */
  .main-content {
    padding-bottom: 60px;
  }

  .intro-box {
    background: linear-gradient(135deg, var(--surface) 0%, #1a0808 100%);
    border-left: 6px solid var(--accent);
    padding: 30px;
    margin: -50px auto 40px;
    position: relative;
    z-index: 10;
    border-radius: 0 8px 8px 0;
    box-shadow: 0 15px 30px rgba(0,0,0,0.6);
    font-size: 1.1rem;
    color: var(--text);
  }

  .intro-box p {
    margin: 0;
  }

  article {
    max-width: 800px;
    margin: 0 auto;
  }

  article h2 {
    font-family: var(--font-display);
    color: var(--accent2);
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    text-transform: uppercase;
    margin: 40px 0 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,215,0,0.2);
    padding-bottom: 10px;
  }

  article h2::before {
    content: '';
    display: block;
    width: 20px;
    height: 20px;
    background-color: var(--accent);
    clip-path: polygon(100% 50%, 0 0, 0 100%);
  }

  article p {
    margin-bottom: 20px;
    color: #e0d5d5;
  }

  article p a {
    text-decoration: underline;
    text-decoration-color: rgba(255, 107, 0, 0.5);
    text-underline-offset: 4px;
    font-weight: 600;
  }

  article p a:hover {
    text-decoration-color: var(--accent2);
  }

  /* LIST STYLING (Mechanic/Racing Vibe) */
  .rev-list {
    list-style: none;
    counter-reset: rev-counter;
    margin: 30px 0;
  }

  .rev-list li {
    position: relative;
    background: var(--surface);
    margin-bottom: 15px;
    padding: 20px 20px 20px 70px;
    border-radius: 6px;
    border-right: 4px solid transparent;
    transition: all 0.3s ease;
  }

  .rev-list li:hover {
    border-right-color: var(--accent2);
    background: #2f1212;
    transform: translateX(5px);
  }

  .rev-list li::before {
    counter-increment: rev-counter;
    content: counter(rev-counter);
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), #cc5500);
    color: #fff;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.5);
  }

  /* FAQ SECTION */
  .faq-section {
    max-width: 800px;
    margin: 60px auto;
  }

  .faq-section h3 {
    font-family: var(--font-display);
    color: var(--accent);
    font-size: 2rem;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 30px;
  }

  details {
    background: var(--surface);
    margin-bottom: 15px;
    border-radius: 6px;
    border: 1px solid rgba(255, 107, 0, 0.1);
    overflow: hidden;
  }

  summary {
    padding: 20px;
    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-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--accent);
    transition: transform 0.3s ease;
  }

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

  details p {
    padding: 0 20px 20px;
    margin: 0;
    color: var(--muted);
  }

  /* RELATED LINKS */
  .related-section {
    background: #0a0202;
    padding: 60px 0;
    border-top: 1px solid #331111;
    border-bottom: 1px solid #331111;
  }

  .related-section h3 {
    font-family: var(--font-display);
    text-align: center;
    color: var(--text);
    font-size: 1.8rem;
    text-transform: uppercase;
    margin-bottom: 30px;
  }

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

  .link-grid a {
    background: var(--surface);
    color: var(--accent2);
    padding: 15px 25px;
    border-radius: 30px;
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.95rem;
    border: 1px solid rgba(255, 215, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
  }

  .link-grid a::before {
    content: '»';
    color: var(--accent);
    font-size: 1.2rem;
  }

  .link-grid a:hover {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
  }

  .link-grid a:hover::before {
    color: #000;
  }

  /* CTA BLOCK */
  .cta-block {
    text-align: center;
    padding: 80px 20px;
    background: radial-gradient(circle at center, #3a1010 0%, var(--bg) 100%);
    position: relative;
  }

  .cta-block::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 4px;
    background: var(--accent);
    border-radius: 4px 4px 0 0;
  }

  .cta-block h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text);
    text-transform: uppercase;
    margin-bottom: 15px;
  }

  .cta-block p {
    color: var(--muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 40px;
    font-family: var(--font-display);
    font-size: 1.2rem;
    text-transform: uppercase;
    font-weight: 700;
    border-radius: 4px;
    min-height: 50px;
    min-width: 200px;
    clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
    transition: transform 0.2s ease, filter 0.2s ease;
  }

  .btn:hover {
    transform: scale(1.05) skewX(-5deg);
  }

  .btn-primary {
    background: linear-gradient(90deg, var(--accent), #ff8c00);
    color: #000;
  }

  .btn-primary:hover {
    color: #000;
    filter: brightness(1.2);
  }

  .btn-secondary {
    background: transparent;
    color: var(--accent2);
    border: 2px solid var(--accent2);
    clip-path: none;
    border-radius: 4px;
  }

  .btn-secondary:hover {
    background: rgba(255, 215, 0, 0.1);
    color: var(--accent2);
    transform: scale(1.05);
  }

  /* FOOTER STYLES (Targeting provided HTML) */
  footer {
    background-color: #0a0202;
    border-top: 2px solid var(--surface);
    padding: 60px 0 20px;
    font-size: 0.9rem;
  }

  .footer-top {
    text-align: center;
    margin-bottom: 40px;
  }

  .footer-brand {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
  }

  .footer-tagline {
    color: var(--muted);
    max-width: 500px;
    margin: 0 auto;
  }

  .footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
  }

  .footer-links div {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .footer-links a {
    color: var(--muted);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

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

  .footer-bottom {
    text-align: center;
    color: #664444;
    padding-top: 20px;
    border-top: 1px solid #1a0808;
  }

  /* MEDIA QUERIES */
  @media (max-width: 768px) {
    .menu-toggle {
      display: block;
    }

    header nav {
      display: none;
      position: absolute;
      top: 70px;
      left: 0;
      width: 100%;
      background: #0a0202;
      border-bottom: 2px solid var(--accent);
      padding: 20px 0;
    }

    header nav.active {
      display: block;
    }

    header nav ul {
      flex-direction: column;
      align-items: center;
      gap: 15px;
    }

    .intro-box {
      margin: -30px 20px 30px;
      border-radius: 8px;
      border-left: none;
      border-top: 4px solid var(--accent);
    }
  }

  @media (max-width: 390px) {
    .hero-banner {
      padding: 40px 0 80px;
    }

    .cta-buttons {
      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; }