:root {
    --bg: #1a0a14;
    --surface: #301828;
    --surface-alt: #4a253e;
    --accent: #ff6b9d;
    --accent-hover: #ff4785;
    --accent2: #4dd0ff;
    --text: #fff0f8;
    --muted: #c295b2;
    --font-display: 'Anton', sans-serif;
    --font-body: 'Barlow', sans-serif;
    --container-w: 1200px;
    --content-w: 840px;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    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); }

  h1, h2, h3, .display-text {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.1;
    font-weight: 400;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-family: var(--font-display);
    font-size: 18px;
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    border: 2px solid transparent;
    min-height: 44px;
  }

  .btn-primary {
    background-color: var(--accent);
    color: #000 !important;
    box-shadow: 4px 4px 0px var(--accent2);
  }
  .btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--accent2);
  }

  .btn-secondary {
    background-color: transparent;
    color: var(--accent2) !important;
    border-color: var(--accent2);
  }
  .btn-secondary:hover {
    background-color: rgba(77, 208, 255, 0.1);
    box-shadow: 0 0 10px rgba(77, 208, 255, 0.3);
  }

  /* HEADER */
  header {
    background-color: rgba(26, 10, 20, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--surface);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
  }
  .logo-area a { display: flex; align-items: center; }

  .nav-links {
    display: flex;
    gap: 24px;
  }
  .nav-links a {
    color: var(--text);
    font-weight: 600;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .nav-links a:hover { color: var(--accent); }

  .header-ctas { display: flex; gap: 12px; }

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

  /* HERO ALT PAGE */
  .hero-alt {
    padding: 60px 0;
    background: radial-gradient(circle at 100% 0%, rgba(255, 107, 157, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 0% 100%, rgba(77, 208, 255, 0.1) 0%, transparent 50%);
    border-bottom: 2px dashed var(--surface);
    position: relative;
    overflow: hidden;
  }

  .hero-alt::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(var(--surface) 2px, transparent 2px);
    background-size: 20px 20px;
    opacity: 0.3;
    z-index: 0;
  }

  .hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--content-w);
    margin: 0 auto;
    text-align: center;
  }

  .breadcrumb {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 20px;
    display: inline-block;
    background: var(--surface);
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--surface-alt);
  }

  .hero-alt h1 {
    font-size: clamp(32px, 5vw, 48px);
    color: var(--text);
    margin-bottom: 24px;
    text-shadow: 3px 3px 0px var(--accent);
  }

  .meta-chips {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
  }

  .chip {
    background: rgba(77, 208, 255, 0.1);
    color: var(--accent2);
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid rgba(77, 208, 255, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  /* MAIN CONTENT AREA */
  .main-article {
    max-width: var(--content-w);
    margin: 60px auto;
    padding: 0 20px;
  }

  .intro-box {
    background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 100%);
    border-left: 4px solid var(--accent);
    padding: 30px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-bottom: 50px;
    font-size: 18px;
    line-height: 1.7;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
  }

  .intro-box::after {
    content: '"';
    position: absolute;
    top: -20px;
    right: 20px;
    font-family: var(--font-display);
    font-size: 80px;
    color: rgba(255, 107, 157, 0.1);
    line-height: 1;
  }

  .content-section {
    margin-bottom: 50px;
  }

  .content-section h2 {
    font-size: 28px;
    color: var(--accent2);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .content-section h2::before {
    content: '';
    display: block;
    width: 24px;
    height: 24px;
    background-color: var(--accent);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  }

  .content-section p {
    margin-bottom: 20px;
    color: var(--text);
  }

  .content-section p a {
    border-bottom: 1px dashed var(--accent2);
    font-weight: 600;
  }
  .content-section p a:hover {
    border-bottom-style: solid;
    color: var(--accent);
  }

  /* CUSTOM LIST */
  .feature-list {
    list-style: none;
    margin: 30px 0;
    display: grid;
    gap: 16px;
  }

  .feature-list li {
    background: var(--surface);
    padding: 16px 20px;
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    border: 1px solid var(--surface-alt);
    transition: var(--transition);
  }

  .feature-list li:hover {
    border-color: var(--accent2);
    transform: translateX(5px);
  }

  .feature-list li::before {
    content: '★';
    color: var(--accent);
    font-size: 20px;
    line-height: 1;
    margin-top: 2px;
  }

  /* SECURITY TIPS (Alert Style) */
  .alert-style {
    background: rgba(255, 107, 157, 0.05);
    border: 2px solid var(--surface-alt);
    padding: 40px;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
  }

  .alert-style::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 6px; height: 100%;
    background: var(--accent);
  }

  .alert-style h2 { color: var(--accent); }
  .alert-style h2::before { background-color: var(--accent2); }

  /* FAQ SECTION */
  .faq-area {
    margin-top: 60px;
    padding-top: 60px;
    border-top: 2px dashed var(--surface);
  }

  .faq-area h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
    color: var(--text);
  }

  .faq-item {
    background: var(--surface);
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid var(--surface-alt);
    overflow: hidden;
  }

  .faq-item summary {
    padding: 20px;
    font-family: var(--font-display);
    font-size: 20px;
    letter-spacing: 0.5px;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--accent2);
  }

  .faq-item summary::-webkit-details-marker { display: none; }

  .faq-item summary::after {
    content: '+';
    font-size: 24px;
    color: var(--accent);
    transition: transform 0.3s ease;
  }

  .faq-item[open] summary::after {
    content: '-';
    transform: rotate(180deg);
  }

  .faq-item p {
    padding: 0 20px 20px;
    color: var(--muted);
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 10px;
    padding-top: 15px;
  }

  /* RELATED LINKS NAV BLOCK */
  .related-nav-block {
    margin: 60px 0;
    background: var(--surface);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
  }

  .related-nav-block h3 {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--muted);
  }

  .pills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }

  .pill-link {
    background: var(--bg);
    color: var(--text);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--surface-alt);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .pill-link:hover {
    background: var(--accent2);
    color: #000;
    border-color: var(--accent2);
  }

  /* GRAND CTA */
  .grand-cta {
    margin: 80px 0;
    padding: 60px 40px;
    background: linear-gradient(45deg, var(--surface) 0%, #4a1532 100%);
    border-radius: 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
  }

  .grand-cta::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 20px,
      rgba(255, 107, 157, 0.03) 20px,
      rgba(255, 107, 157, 0.03) 40px
    );
    z-index: 0;
  }

  .grand-cta-content {
    position: relative;
    z-index: 1;
  }

  .grand-cta h3 {
    font-size: 40px;
    color: var(--text);
    margin-bottom: 16px;
    text-shadow: 2px 2px 0px var(--accent);
  }

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

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

  /* FOOTER */
  footer {
    background-color: #11050d;
    padding: 60px 0 20px;
    border-top: 4px solid var(--accent);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    margin-bottom: 40px;
  }

  .footer-brand h2 {
    color: var(--accent);
    font-size: 36px;
    margin-bottom: 16px;
  }
  .footer-brand p { color: var(--muted); font-size: 15px; }

  .footer-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }

  .footer-col h3 {
    color: var(--text);
    font-size: 20px;
    margin-bottom: 20px;
  }

  .footer-col ul { list-style: none; }
  .footer-col ul li { margin-bottom: 12px; }
  .footer-col ul li a { color: var(--muted); font-size: 15px; }
  .footer-col ul li a:hover { color: var(--accent2); padding-left: 5px; }

  .footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--muted);
    font-size: 14px;
  }

  /* RESPONSIVE */
  @media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    /* Basic toggle logic for CSS-only fallback if needed, but JS handles it below */
    .nav-links.active {
      display: flex;
      flex-direction: column;
      position: absolute;
      top: 80px;
      left: 0;
      width: 100%;
      background: var(--surface);
      padding: 20px;
      border-bottom: 2px solid var(--accent);
    }
  }

  @media (max-width: 768px) {
    .header-ctas { display: none; }
    .hero-alt h1 { font-size: 32px; }
    .footer-links-grid { grid-template-columns: 1fr; gap: 30px; }
    .alert-style { padding: 25px; }
    .grand-cta { padding: 40px 20px; }
    .grand-cta h3 { font-size: 32px; }
  }

  @media (max-width: 390px) {
    .container { padding: 0 16px; }
    .intro-box { padding: 20px; font-size: 16px; }
    .content-section h2 { font-size: 24px; }
    .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; }