:root {
    --bg: #070d12;
    --surface: #122030;
    --surface-alt: #182a3f;
    --accent: #f97316;
    --accent-hover: #ea580c;
    --accent2: #38bdf8;
    --accent2-hover: #0284c7;
    --text: #f0f8ff;
    --muted: #8fa5b8;
    --border: #263d54;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Fira Sans', sans-serif;
    --transition: all 0.3s ease;
  }

  * { 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;
    -webkit-font-smoothing: antialiased;
  }

  a { color: var(--accent2); text-decoration: none; transition: var(--transition); }
  a:hover { color: var(--accent); }

  .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

  /* HEADER (A1 Styles) */
  header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
  }
  .brand {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .nav-links { display: none; }
  .nav-links a {
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    padding: 10px;
  }
  .nav-links a:hover { color: var(--accent2); }
  .nav-actions { display: none; gap: 12px; }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    height: 44px;
    font-family: var(--font-heading);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
  }
  .btn-primary { background-color: var(--accent); color: #fff; }
  .btn-primary:hover { background-color: var(--accent-hover); color: #fff; }
  .btn-secondary { background-color: transparent; border: 1px solid var(--accent2); color: var(--accent2); }
  .btn-secondary:hover { background-color: var(--accent2); color: var(--bg); }
  .menu-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 28px;
    cursor: pointer;
    display: block;
    padding: 5px;
  }
  .mobile-menu {
    display: none;
    background-color: var(--surface-alt);
    border-bottom: 1px solid var(--border);
    padding: 15px 20px;
    flex-direction: column;
    gap: 15px;
  }
  .mobile-menu.active { display: flex; }
  .mobile-menu a { color: var(--text); font-weight: 500; font-size: 16px; }
  .mobile-menu .btn { width: 100%; margin-top: 5px; }

  @media (min-width: 1024px) {
    .menu-toggle { display: none; }
    .nav-links { display: flex; gap: 20px; }
    .nav-actions { display: flex; }
    .mobile-menu { display: none !important; }
  }

  /* HERO BANNER - Terminal Station Motif */
  .hero {
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
    padding: 60px 0 40px;
    position: relative;
  }
  .hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.1;
    pointer-events: none;
  }
  .breadcrumb {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
    border-left: 2px solid var(--accent2);
    padding-left: 10px;
  }
  .hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    max-width: 800px;
  }
  .meta-chips { display: flex; gap: 15px; flex-wrap: wrap; }
  .chip {
    background-color: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--accent2);
    font-family: var(--font-body);
    font-size: 12px;
    padding: 6px 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .chip::before { content: '['; margin-right: 5px; color: var(--muted); }
  .chip::after { content: ']'; margin-left: 5px; color: var(--muted); }

  /* MAIN CONTENT */
  .content-wrapper {
    padding: 50px 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 850px;
    margin: 0 auto;
  }

  .intro-block {
    font-size: 18px;
    color: var(--text);
    background-color: var(--surface);
    padding: 25px 30px;
    border-left: 4px solid var(--accent);
    position: relative;
    line-height: 1.8;
  }
  .intro-block::before {
    content: 'SYS.INFO //';
    display: block;
    font-family: var(--font-heading);
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 10px;
    letter-spacing: 2px;
  }

  .article-body h2 {
    font-family: var(--font-heading);
    font-size: 24px;
    color: var(--text);
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .article-body h2::before {
    content: '>';
    color: var(--accent2);
    font-weight: 700;
  }
  .article-body p {
    margin-bottom: 20px;
    color: #c2d1df;
    font-size: 16px;
  }
  .article-body a {
    border-bottom: 1px dashed var(--accent2);
    padding-bottom: 2px;
  }
  .article-body a:hover {
    border-bottom-color: var(--accent);
  }

  /* CUSTOM LIST - Data Cards */
  .data-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
    margin: 30px 0;
    list-style: none;
    counter-reset: shio-counter;
  }
  .data-list li {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 15px 20px;
    font-size: 15px;
    color: var(--text);
    position: relative;
    transition: var(--transition);
    display: flex;
    align-items: center;
  }
  .data-list li:hover {
    border-color: var(--accent2);
    background-color: var(--surface-alt);
    transform: translateY(-2px);
  }
  .data-list li::before {
    counter-increment: shio-counter;
    content: counter(shio-counter, decimal-leading-zero);
    font-family: var(--font-heading);
    color: var(--muted);
    font-size: 14px;
    margin-right: 15px;
    background: var(--bg);
    padding: 2px 8px;
    border: 1px solid var(--border);
  }

  /* FAQ SECTION */
  .faq-section { margin-top: 50px; }
  .faq-section h2 {
    font-family: var(--font-heading);
    font-size: 24px;
    margin-bottom: 25px;
    color: var(--text);
    text-transform: uppercase;
  }
  .faq-section h2::before { content: '?'; color: var(--accent); margin-right: 10px; }

  details {
    background-color: var(--surface);
    border: 1px solid var(--border);
    margin-bottom: 10px;
    transition: var(--transition);
  }
  details:hover { border-color: var(--muted); }
  summary {
    padding: 18px 20px;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    letter-spacing: 0.5px;
  }
  summary::-webkit-details-marker { display: none; }
  summary::after {
    content: '+';
    color: var(--accent2);
    font-size: 20px;
    font-family: monospace;
  }
  details[open] summary::after { content: '-'; color: var(--accent); }
  details p {
    padding: 0 20px 20px;
    margin: 0;
    color: #c2d1df;
    font-size: 15px;
    border-top: 1px dashed var(--border);
    padding-top: 15px;
  }

  /* RELATED & CTA PANELS */
  .bottom-panels {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 60px;
  }
  @media (min-width: 768px) {
    .bottom-panels { grid-template-columns: 1fr 1.5fr; }
  }

  .nav-panel, .cta-panel {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 30px;
    position: relative;
  }
  .nav-panel { border-top: 3px solid var(--accent2); }
  .cta-panel { border-top: 3px solid var(--accent); }

  .panel-title {
    font-family: var(--font-heading);
    font-size: 18px;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }

  .related-links { display: flex; flex-direction: column; gap: 10px; }
  .related-links a {
    display: block;
    padding: 10px 15px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 0.5px;
  }
  .related-links a::before { content: '🔗 '; opacity: 0.5; }
  .related-links a:hover { border-color: var(--accent2); color: var(--accent2); }

  .cta-content h3 {
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--text);
    margin-bottom: 10px;
    text-transform: uppercase;
  }
  .cta-content p { color: #c2d1df; margin-bottom: 25px; font-size: 15px; }
  .cta-actions { display: flex; gap: 15px; flex-wrap: wrap; }
  .cta-actions .btn { min-width: 140px; }

  /* FOOTER (A2 Styles) */
  footer {
    background-color: var(--bg);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 60px;
  }
  .footer-brand {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 15px;
  }
  .footer-tagline {
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 30px;
    max-width: 500px;
  }
  .footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 40px;
  }
  .footer-links a {
    color: #c2d1df;
    font-size: 14px;
    transition: var(--transition);
  }
  .footer-links a:hover { color: var(--accent2); }
  .copyright {
    color: var(--muted);
    font-size: 13px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
    text-align: center;
  }

  @media (max-width: 390px) {
    .hero h1 { font-size: 28px; }
    .btn { width: 100%; }
    .cta-actions { flex-direction: column; 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; }