:root {
    --bg: #140505;
    --surface: #260d0d;
    --surface-light: #3a1515;
    --accent: #ff6b00;
    --accent-hover: #e65c00;
    --accent2: #ffd700;
    --text: #fff5f0;
    --muted: #c28888;
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Fira Sans', sans-serif;
    --container-width: 1024px;
    --radius: 8px;
    --transition: all 0.3s ease;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    background-image:
      radial-gradient(circle at 100% 0%, rgba(255, 107, 0, 0.05) 0%, transparent 50%),
      radial-gradient(circle at 0% 100%, rgba(255, 215, 0, 0.05) 0%, transparent 50%);
  }
  a { color: var(--accent2); text-decoration: none; transition: var(--transition); }
  a:hover { color: var(--accent); text-decoration: underline; }
  ul { list-style: none; }
  img { max-width: 100%; height: auto; display: block; }

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

  /* HEADER STYLES (Targeting provided HTML) */
  header {
    background-color: var(--surface);
    border-bottom: 2px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  }
  .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(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .menu-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.8rem;
    cursor: pointer;
    display: none;
    padding: 5px;
    min-width: 44px;
    min-height: 44px;
  }
  nav ul {
    display: flex;
    gap: 20px;
  }
  nav a {
    color: var(--text);
    font-family: var(--font-display);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 1rem;
    padding: 10px 5px;
    display: block;
  }
  nav a:hover { color: var(--accent); text-decoration: none; }

  /* HERO BANNER */
  .hero-banner {
    padding: 60px 20px 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
    position: relative;
    border-bottom: 1px solid var(--surface-light);
  }
  .hero-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
      -45deg,
      rgba(255, 107, 0, 0.03),
      rgba(255, 107, 0, 0.03) 10px,
      transparent 10px,
      transparent 20px
    );
    pointer-events: none;
  }
  .breadcrumb {
    font-size: 0.875rem;
    color: var(--muted);
    margin-bottom: 20px;
    display: inline-block;
    background: rgba(0,0,0,0.3);
    padding: 5px 15px;
    border-radius: 20px;
    border: 1px solid var(--surface-light);
  }
  .hero-banner h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--text);
    text-transform: uppercase;
    font-style: italic;
    line-height: 1.1;
    margin-bottom: 20px;
    text-shadow: 2px 2px 0px var(--accent), 4px 4px 0px rgba(0,0,0,0.5);
    letter-spacing: 1px;
  }
  .meta-chips {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
  }
  .chip {
    background-color: var(--surface);
    color: var(--accent2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--accent);
    display: flex;
    align-items: center;
    gap: 5px;
  }

  /* MAIN CONTENT AREA */
  .content-area {
    padding: 40px 0 80px;
  }

  .intro-block {
    background: linear-gradient(90deg, var(--surface), transparent);
    border-left: 4px solid var(--accent);
    padding: 25px;
    font-size: 1.125rem;
    color: var(--text);
    margin-bottom: 50px;
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.2);
  }

  .section-block {
    margin-bottom: 60px;
    position: relative;
  }

  .section-block h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--accent2);
    margin-bottom: 20px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 2px solid var(--surface-light);
    padding-bottom: 10px;
  }
  .section-block h2::before {
    content: '>>';
    color: var(--accent);
    font-style: italic;
    font-weight: bold;
    letter-spacing: -2px;
  }

  .text-content p {
    margin-bottom: 1.2rem;
    font-size: 1rem;
    color: #e0d5d0;
  }
  .text-content a {
    font-weight: 700;
    border-bottom: 1px dashed var(--accent2);
  }
  .text-content a:hover {
    border-bottom-style: solid;
  }

  /* LIST STYLING (Checklist Bergambar) */
  .mechanic-list {
    margin: 20px 0;
    padding: 20px;
    background-color: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--surface-light);
  }
  .mechanic-list li {
    position: relative;
    padding-left: 35px;
    margin-bottom: 15px;
    font-weight: 500;
  }
  .mechanic-list li:last-child { margin-bottom: 0; }
  .mechanic-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 2px;
    width: 20px;
    height: 20px;
    background-color: var(--accent);
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
  }

  /* FAQ STYLING */
  .faq-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  details {
    background-color: var(--surface);
    border: 1px solid var(--surface-light);
    border-radius: var(--radius);
    overflow: hidden;
  }
  details[open] {
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(255, 107, 0, 0.1);
  }
  summary {
    padding: 18px 20px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    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-weight: bold;
    transition: transform 0.3s;
  }
  details[open] summary::after {
    content: '-';
    transform: rotate(180deg);
  }
  details p {
    padding: 0 20px 20px;
    color: var(--muted);
    border-top: 1px solid var(--surface-light);
    margin-top: 10px;
    padding-top: 15px;
  }

  /* RELATED PAGES BLOCK */
  .related-nav {
    margin-top: 60px;
    padding: 40px;
    background-color: var(--surface);
    border-radius: var(--radius);
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .related-nav::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent));
  }
  .related-nav h3 {
    font-family: var(--font-display);
    color: var(--accent2);
    font-size: 1.5rem;
    margin-bottom: 25px;
    text-transform: uppercase;
  }
  .related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
  }
  .related-grid a {
    display: block;
    background-color: var(--bg);
    padding: 15px;
    border: 1px solid var(--surface-light);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    transition: var(--transition);
  }
  .related-grid a:hover {
    background-color: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-3px);
    text-decoration: none;
    box-shadow: 0 5px 15px rgba(255, 107, 0, 0.3);
  }

  /* MEGA CTA */
  .cta-mega {
    margin-top: 60px;
    background: linear-gradient(135deg, var(--accent) 0%, #b34a00 100%);
    padding: 50px 20px;
    border-radius: var(--radius);
    text-align: center;
    color: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .cta-mega h2 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    text-transform: uppercase;
    margin-bottom: 15px;
    font-style: italic;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
  }
  .cta-mega p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #ffe5d9;
  }
  .btn-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
    min-width: 160px;
    min-height: 44px;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .btn-primary {
    background-color: var(--accent2);
    color: #000 !important;
  }
  .btn-primary:hover {
    background-color: #ffe033;
    transform: scale(1.05);
    text-decoration: none;
  }
  .btn-secondary {
    background-color: transparent;
    color: #fff !important;
    border: 2px solid #fff;
  }
  .btn-secondary:hover {
    background-color: rgba(255,255,255,0.1);
    transform: scale(1.05);
    text-decoration: none;
  }

  /* FOOTER STYLES (Targeting provided HTML) */
  footer {
    background-color: #0a0202;
    padding: 60px 0 20px;
    border-top: 1px solid var(--surface-light);
    margin-top: 40px;
  }
  .footer-top { margin-bottom: 40px; text-align: center; }
  .footer-brand {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .footer-tagline { color: var(--muted); font-size: 0.9rem; }
  .footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
  }
  .footer-links div { display: flex; flex-direction: column; gap: 10px; }
  .footer-links a { color: var(--muted); font-size: 0.9rem; }
  .footer-links a:hover { color: var(--accent2); }
  .footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--surface-light);
    color: var(--muted);
    font-size: 0.8rem;
  }

  /* RESPONSIVE */
  @media (max-width: 768px) {
    .menu-toggle { display: block; }
    nav {
      display: none;
      position: absolute;
      top: 70px;
      left: 0;
      width: 100%;
      background-color: var(--surface);
      border-bottom: 2px solid var(--accent);
      padding: 20px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    }
    nav.active { display: block; }
    nav ul { flex-direction: column; gap: 10px; }
    .hero-banner { padding: 40px 15px 50px; }
    .intro-block { font-size: 1rem; padding: 15px; }
    .section-block h2 { font-size: 1.5rem; }
    .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; }