:root {
    --bg: #081018;
    --surface: #122030;
    --surface-alt: #1a2c42;
    --accent: #60a5fa;
    --accent-hover: #3b82f6;
    --accent2: #fbbf24;
    --accent2-hover: #f59e0b;
    --text: #f0f6ff;
    --muted: #8fa0b8;
    --font-heading: 'Anton', sans-serif;
    --font-body: 'Barlow', sans-serif;
    --steel-border: 1px solid rgba(143, 160, 184, 0.2);
  }

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

  a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
  }

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

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

  /* BUTTONS */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    border: none;
    min-height: 44px;
  }

  .btn-primary {
    background-color: var(--accent2);
    color: #000;
  }

  .btn-primary:hover {
    background-color: var(--accent2-hover);
    color: #000;
    transform: translateY(-2px);
  }

  .btn-secondary {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
  }

  .btn-secondary:hover {
    background-color: rgba(96, 165, 250, 0.1);
    transform: translateY(-2px);
  }

  /* HEADER (Strict Copy Styles) */
  header {
    background-color: rgba(8, 16, 24, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: var(--steel-border);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
  }

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

  .logo {
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--text);
    letter-spacing: 1px;
    text-transform: uppercase;
  }

  .nav-links {
    display: none;
    gap: 24px;
  }

  .nav-links a {
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
  }

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

  .header-ctas {
    display: none;
    gap: 12px;
  }

  .mobile-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--text);
    font-size: 28px;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    background-color: var(--surface);
    border-bottom: var(--steel-border);
    padding: 10px 20px 20px;
  }

  .mobile-menu.active {
    display: flex;
  }

  .mobile-menu a {
    color: var(--text);
    padding: 12px 0;
    font-weight: 500;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }

  .mobile-menu a:last-child {
    border-bottom: none;
  }

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

  /* HERO SECTION */
  .hero-page {
    padding-top: 120px;
    padding-bottom: 40px;
    background: radial-gradient(circle at top center, var(--surface-alt) 0%, var(--bg) 100%);
    border-bottom: var(--steel-border);
    position: relative;
  }

  .hero-page::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: repeating-linear-gradient(45deg, rgba(143, 160, 184, 0.02) 0px, rgba(143, 160, 184, 0.02) 2px, transparent 2px, transparent 8px);
    pointer-events: none;
  }

  .breadcrumb {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
  }

  .hero-page h1 {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    z-index: 2;
  }

  .meta-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    position: relative;
    z-index: 2;
  }

  .chip {
    background-color: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
  }

  /* MAIN CONTENT AREA */
  .content-area {
    padding: 60px 0;
  }

  .article-layout {
    max-width: 840px;
    margin: 0 auto;
  }

  .intro-box {
    background-color: var(--surface);
    border-left: 4px solid var(--accent);
    padding: 24px 30px;
    margin-bottom: 40px;
    font-size: 18px;
    line-height: 1.7;
    color: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border-radius: 0 8px 8px 0;
  }

  .content-section {
    margin-bottom: 48px;
  }

  .content-section h2 {
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--accent2);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .content-section h2::after {
    content: '';
    flex-grow: 1;
    height: 1px;
    background: var(--steel-border);
  }

  .content-section p {
    margin-bottom: 16px;
    font-size: 16px;
    color: #d1d5db;
  }

  /* CUSTOM LIST STYLING */
  .step-list {
    list-style: none;
    margin: 24px 0;
    counter-reset: step-counter;
    display: grid;
    gap: 16px;
  }

  .step-list li {
    position: relative;
    padding: 20px 24px 20px 70px;
    background-color: var(--surface);
    border: var(--steel-border);
    border-radius: 6px;
    font-weight: 500;
    color: var(--text);
    transition: transform 0.2s ease, border-color 0.2s ease;
  }

  .step-list li:hover {
    transform: translateX(4px);
    border-color: var(--accent);
  }

  .step-list li::before {
    counter-increment: step-counter;
    content: counter(step-counter);
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background-color: rgba(96, 165, 250, 0.15);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 18px;
  }

  /* FAQ STYLING */
  .faq-container {
    margin-top: 60px;
    border-top: 2px solid var(--surface);
    padding-top: 40px;
  }

  .faq-title {
    font-family: var(--font-heading);
    font-size: 32px;
    text-align: center;
    margin-bottom: 30px;
    color: var(--text);
    text-transform: uppercase;
  }

  details {
    background-color: var(--surface);
    border: var(--steel-border);
    border-radius: 6px;
    margin-bottom: 16px;
    overflow: hidden;
  }

  summary {
    padding: 20px;
    font-size: 18px;
    font-weight: 600;
    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-size: 24px;
    color: var(--accent);
    transition: transform 0.3s ease;
  }

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

  details p {
    padding: 0 20px 20px;
    color: #d1d5db;
    margin: 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 16px;
  }

  /* RELATED PAGES BLOCK */
  .related-block {
    margin-top: 60px;
    background-color: var(--surface-alt);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid rgba(96, 165, 250, 0.2);
  }

  .related-block h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--text);
    text-align: center;
    letter-spacing: 1px;
  }

  .related-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
  }

  .related-grid a {
    display: inline-block;
    background-color: var(--bg);
    border: 1px solid var(--surface);
    padding: 12px 20px;
    border-radius: 4px;
    color: var(--muted);
    font-weight: 500;
    text-transform: capitalize;
  }

  .related-grid a:hover {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(96, 165, 250, 0.05);
  }

  /* GRAND CTA */
  .grand-cta {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--surface) 0%, #0d1a28 100%);
    border: 1px solid rgba(251, 191, 36, 0.3);
    padding: 60px 20px;
    text-align: center;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
  }

  .grand-cta::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(251,191,36,0.05) 0%, transparent 60%);
    pointer-events: none;
  }

  .grand-cta h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    color: var(--text);
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
  }

  .grand-cta p {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 2;
  }

  .cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    position: relative;
    z-index: 2;
  }

  /* FOOTER (Strict Copy Styles) */
  footer {
    background-color: var(--bg);
    border-top: var(--steel-border);
    padding: 60px 0 30px;
    margin-top: 60px;
  }

  .footer-brand {
    font-family: var(--font-heading);
    font-size: 32px;
    color: var(--text);
    margin-bottom: 16px;
    text-transform: uppercase;
  }

  .footer-tagline {
    color: var(--muted);
    margin-bottom: 30px;
    max-width: 400px;
  }

  .footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px 24px;
    margin-bottom: 40px;
  }

  .footer-links a {
    color: var(--muted);
    font-size: 14px;
  }

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

  .footer-copy {
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    border-top: var(--steel-border);
    padding-top: 20px;
  }

  /* RESPONSIVE BREAKPOINTS */
  @media (max-width: 767px) {
    .hero-page { padding-top: 100px; }
    .intro-box { padding: 20px; font-size: 16px; }
    .step-list li { padding: 16px 16px 16px 56px; }
    .step-list li::before { width: 28px; height: 28px; left: 14px; font-size: 16px; }
    .cta-buttons { flex-direction: column; }
    .related-block { padding: 24px 16px; }
    .grand-cta { padding: 40px 16px; }
  }


/* 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; }