:root {
    --bg: #070d12;
    --surface: #122030;
    --surface-alt: #1a2c42;
    --accent: #f97316;
    --accent-hover: #ea580c;
    --accent2: #38bdf8;
    --text: #f0f8ff;
    --muted: #8fa5b8;
    --border: rgba(143, 165, 184, 0.2);
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Fira Sans', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

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

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

  .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 20px; }

  /* Buttons - Terminal Style */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-family: var(--font-display);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 1px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    font-size: 0.95rem;
  }
  .btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 0 10px rgba(249, 115, 22, 0.2);
  }
  .btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.4);
  }
  .btn-secondary {
    background: transparent;
    color: var(--accent2);
    border-color: var(--accent2);
  }
  .btn-secondary:hover {
    background: rgba(56, 189, 248, 0.1);
    box-shadow: inset 0 0 10px rgba(56, 189, 248, 0.2);
  }

  /* Header (Exact Match + Styling) */
  header {
    background: rgba(7, 13, 18, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
  }
  .brand {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .nav-links { display: none; gap: 20px; }
  .nav-links a {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.9rem;
    color: var(--text);
    letter-spacing: 0.5px;
  }
  .nav-links a:hover { color: var(--accent); }
  .nav-actions { display: none; gap: 15px; }
  .menu-toggle {
    display: block;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 1.5rem;
    padding: 5px 10px;
    cursor: pointer;
  }
  .mobile-menu {
    display: none;
    flex-direction: column;
    background: var(--surface);
    border-bottom: 1px solid var(--accent);
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
  }
  .mobile-menu a {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    text-transform: uppercase;
    color: var(--text);
  }
  .mobile-menu .btn { margin: 15px 20px; text-align: center; }

  /* Hero Banner - Terminal Data Screen */
  .hero-banner {
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
    padding: 40px 0 50px;
    position: relative;
    overflow: hidden;
  }
  .hero-banner::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.1;
    pointer-events: none;
  }
  .breadcrumb {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 20px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .breadcrumb::before {
    content: 'SYS_DIR >';
    color: var(--accent);
    font-size: 0.75rem;
  }
  .hero-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text);
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
  }
  .meta-chips { display: flex; flex-wrap: wrap; gap: 12px; }
  .chip {
    background: rgba(56, 189, 248, 0.05);
    border: 1px solid var(--accent2);
    color: var(--accent2);
    padding: 4px 12px;
    font-size: 0.75rem;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
  }
  .chip::before {
    content: '■';
    margin-right: 6px;
    font-size: 0.5rem;
  }

  /* Main Content Area */
  .content-wrapper {
    max-width: 860px;
    margin: 0 auto;
    padding: 40px 20px 80px;
  }

  /* Intro Block */
  .intro-block {
    background: var(--surface);
    border-left: 4px solid var(--accent);
    padding: 25px;
    margin-bottom: 40px;
    font-size: 1.1rem;
    color: var(--text);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
  }

  /* Sections */
  .content-section { margin-bottom: 50px; }
  .content-section h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--accent2);
    margin-bottom: 20px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
  }
  .content-section h2::before {
    content: '>>';
    color: var(--accent);
    font-size: 1.2rem;
  }
  .content-section p {
    margin-bottom: 1rem;
    color: var(--muted);
  }
  .content-section p a {
    border-bottom: 1px dashed var(--accent2);
  }
  .content-section p a:hover {
    border-bottom-style: solid;
    color: var(--accent);
  }

  /* Terminal Step List */
  .step-list {
    list-style: none;
    margin: 25px 0;
    padding: 0;
  }
  .step-list li {
    position: relative;
    padding: 15px 15px 15px 60px;
    background: var(--surface);
    margin-bottom: 15px;
    border: 1px solid var(--border);
    color: var(--text);
    transition: var(--transition);
  }
  .step-list li:hover {
    border-color: var(--accent2);
    background: var(--surface-alt);
  }
  .step-list li::before {
    content: '0' counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
  }
  .step-list { counter-reset: step-counter; }

  /* FAQ Accordion */
  .faq-section { margin-bottom: 50px; }
  details {
    background: var(--surface);
    border: 1px solid var(--border);
    margin-bottom: 10px;
    transition: var(--transition);
  }
  details:hover { border-color: var(--muted); }
  summary {
    padding: 18px 20px;
    cursor: pointer;
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--text);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  summary::-webkit-details-marker { display: none; }
  summary::after {
    content: '[+]';
    color: var(--accent2);
    font-family: monospace;
    font-size: 1rem;
  }
  details[open] summary::after { content: '[-]'; color: var(--accent); }
  details[open] summary { border-bottom: 1px solid var(--border); color: var(--accent2); }
  details p {
    padding: 20px;
    margin: 0;
    color: var(--muted);
    background: rgba(0,0,0,0.2);
  }

  /* Related Pages Grid */
  .related-pages {
    background: var(--surface);
    padding: 30px;
    border-top: 2px solid var(--accent2);
    margin-bottom: 50px;
  }
  .related-pages h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    text-transform: uppercase;
    color: var(--text);
    margin-bottom: 20px;
  }
  .related-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .related-nav a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
  }
  .related-nav a::after {
    content: '→';
    color: var(--muted);
    transition: var(--transition);
  }
  .related-nav a:hover {
    border-color: var(--accent);
    background: rgba(249, 115, 22, 0.05);
  }
  .related-nav a:hover::after {
    color: var(--accent);
    transform: translateX(5px);
  }

  /* CTA Block */
  .cta-terminal {
    background: linear-gradient(135deg, var(--surface) 0%, #0a1118 100%);
    border: 1px solid var(--border);
    border-left: 5px solid var(--accent);
    padding: 40px 20px;
    text-align: center;
  }
  .cta-terminal h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--text);
    text-transform: uppercase;
    margin-bottom: 15px;
  }
  .cta-terminal p {
    color: var(--muted);
    margin-bottom: 25px;
  }
  .cta-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    justify-content: center;
  }

  /* Footer (Exact Match + Styling) */
  footer {
    background: #04080b;
    border-top: 1px solid var(--border);
    padding: 50px 0 30px;
    text-align: center;
  }
  .footer-brand {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
  }
  .footer-tagline {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
  }
  .footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px 25px;
    margin-bottom: 30px;
  }
  .footer-links a {
    color: var(--muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    font-family: var(--font-display);
    letter-spacing: 0.5px;
  }
  .footer-links a:hover { color: var(--accent); }
  .copyright {
    color: #4a5d6e;
    font-size: 0.8rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 20px;
    margin-top: 20px;
  }

  /* Breakpoints */
  @media (min-width: 768px) {
    .hero-title { font-size: 2.8rem; }
    .nav-links { display: flex; }
    .nav-actions { display: flex; }
    .menu-toggle { display: none; }
    .related-nav { grid-template-columns: repeat(3, 1fr); }
    .cta-actions { flex-direction: row; }
  }
  @media (min-width: 1024px) {
    .hero-title { font-size: 3.2rem; }
  }


/* 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; }