/* VARIABLES & THEME */
    :root {
      --bg: #0a1118;
      --surface: #142230;
      --surface-hover: #1a2c3e;
      --accent: #4dd0ff;
      --accent-hover: #3bc0f0;
      --accent2: #ffd166;
      --text: #f0faff;
      --muted: #8fa8b8;
      --font-display: 'Russo One', sans-serif;
      --font-body: 'Open Sans', sans-serif;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --transition: all 0.3s ease;
    }

    /* RESET & BASE */
    * { 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;
      -webkit-font-smoothing: antialiased;
    }
    a { color: var(--accent); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent2); }
    h1, h2, h3, h4, .font-display { font-family: var(--font-display); font-weight: normal; }
    img { max-width: 100%; height: auto; display: block; }
    .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 20px; }

    /* BUTTONS */
    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 12px 24px; border-radius: var(--radius-sm);
      font-family: var(--font-display); font-size: 14px; text-transform: uppercase;
      letter-spacing: 0.5px; cursor: pointer; border: none;
      min-height: 44px; transition: var(--transition);
      text-align: center;
    }
    .btn-primary { background-color: var(--accent); color: #000; }
    .btn-primary:hover { background-color: var(--accent-hover); color: #000; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(77, 208, 255, 0.3); }
    .btn-secondary { background-color: transparent; color: var(--accent2); border: 2px solid var(--accent2); }
    .btn-secondary:hover { background-color: var(--accent2); color: #000; transform: translateY(-2px); }

    /* HEADER (Matches Homepage structure) */
    header { background-color: rgba(10, 17, 24, 0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(143, 168, 184, 0.1); }
    .header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
    .logo { font-family: var(--font-display); font-size: 28px; color: var(--text); display: flex; align-items: center; gap: 10px; }
    .logo span { color: var(--accent); }
    .nav-links { display: none; gap: 24px; }
    .nav-links a { color: var(--text); font-weight: 600; 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; position: absolute; top: 80px; left: 0; width: 100%;
      background-color: var(--surface); padding: 20px; border-bottom: 1px solid rgba(143, 168, 184, 0.2);
      flex-direction: column; gap: 16px; box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    }
    .mobile-menu.active { display: flex; }
    .mobile-menu a { color: var(--text); font-size: 16px; font-weight: 600; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .mobile-menu .header-ctas { display: flex; flex-direction: column; margin-top: 10px; }

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

    /* HERO SECTION */
    .hero {
      position: relative;
      padding: 80px 0 60px;
      background: linear-gradient(135deg, var(--bg) 0%, #0f1d2b 100%);
      overflow: hidden;
      text-align: center;
      border-bottom: 1px solid rgba(77, 208, 255, 0.1);
    }
    /* Kite decorative elements in background */
    .hero::before, .hero::after {
      content: ''; position: absolute; opacity: 0.05;
      background-color: var(--accent);
      clip-path: polygon(50% 0%, 100% 30%, 50% 100%, 0% 30%);
    }
    .hero::before { width: 150px; height: 200px; top: -20px; left: 5%; transform: rotate(15deg); }
    .hero::after { width: 100px; height: 140px; bottom: 20px; right: 10%; transform: rotate(-20deg); background-color: var(--accent2); }

    .hero-inner { position: relative; z-index: 2; max-width: 800px; }
    .breadcrumb {
      font-size: 13px; color: var(--muted); margin-bottom: 20px;
      display: inline-block; padding: 6px 16px; background: rgba(255,255,255,0.03);
      border-radius: 20px; border: 1px solid rgba(255,255,255,0.05);
    }
    .hero h1 { font-size: 32px; color: var(--text); margin-bottom: 24px; line-height: 1.2; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }
    .meta-chips { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
    .chip {
      font-size: 12px; font-weight: 600; color: var(--bg); background-color: var(--accent2);
      padding: 6px 12px; border-radius: 4px; font-family: var(--font-display); letter-spacing: 0.5px;
    }
    .chip:first-child { background-color: var(--accent); }

    @media (min-width: 768px) {
      .hero { padding: 100px 0 80px; }
      .hero h1 { font-size: 48px; }
    }

    /* MAIN CONTENT */
    .page-wrapper { padding: 60px 0; display: flex; flex-direction: column; gap: 50px; }
    .content-area { max-width: 840px; margin: 0 auto; width: 100%; }

    /* Intro Block */
    .intro-block {
      background: var(--surface);
      padding: 30px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--accent);
      margin-bottom: 50px;
      font-size: 17px;
      line-height: 1.8;
      box-shadow: 0 10px 30px rgba(0,0,0,0.2);
      position: relative;
    }
    .intro-block::before {
      content: '"'; position: absolute; top: 10px; right: 20px;
      font-family: var(--font-display); font-size: 80px; color: rgba(77, 208, 255, 0.05); line-height: 1;
    }

    /* Sections */
    .guide-section { margin-bottom: 50px; position: relative; }
    .guide-section h2 {
      font-size: 24px; color: var(--accent2); margin-bottom: 20px; padding-bottom: 10px;
      border-bottom: 1px solid rgba(255, 209, 102, 0.2); display: flex; align-items: center; gap: 12px;
    }
    /* Section Numbers */
    .guide-section { counter-increment: section; }
    .guide-section h2::before {
      content: "0" counter(section);
      font-family: var(--font-display); color: var(--surface);
      background: var(--accent2); width: 36px; height: 36px;
      display: flex; align-items: center; justify-content: center;
      border-radius: 8px; font-size: 16px; flex-shrink: 0;
    }

    .guide-section p { margin-bottom: 20px; color: var(--text); font-size: 16px; }

    /* Custom List */
    .custom-list { list-style: none; padding-left: 0; margin-bottom: 20px; background: rgba(20, 34, 48, 0.5); padding: 20px; border-radius: var(--radius-sm); }
    .custom-list li {
      position: relative; padding-left: 32px; margin-bottom: 12px; font-size: 16px;
    }
    .custom-list li:last-child { margin-bottom: 0; }
    .custom-list li::before {
      content: ''; position: absolute; left: 0; top: 6px; width: 14px; height: 14px;
      background-color: var(--accent);
      clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%); /* Diamond/Kite shape */
    }

    @media (min-width: 768px) {
      .guide-section h2 { font-size: 28px; }
      .intro-block { padding: 40px; font-size: 18px; }
    }

    /* FAQ SECTION */
    .faq-container { background: var(--surface); padding: 40px 30px; border-radius: var(--radius-lg); margin-bottom: 50px; }
    .faq-container h2 { font-size: 28px; text-align: center; margin-bottom: 30px; color: var(--text); }
    details {
      background: rgba(10, 17, 24, 0.6); margin-bottom: 16px; border-radius: var(--radius-sm);
      border: 1px solid rgba(143, 168, 184, 0.1); overflow: hidden;
    }
    summary {
      padding: 20px; font-weight: 600; font-size: 16px; cursor: pointer; list-style: none;
      display: flex; justify-content: space-between; align-items: center; color: var(--accent);
    }
    summary::-webkit-details-marker { display: none; }
    summary::after {
      content: '+'; font-family: var(--font-display); font-size: 20px; color: var(--muted);
      transition: transform 0.3s;
    }
    details[open] summary::after { transform: rotate(45deg); color: var(--accent2); }
    details p { padding: 0 20px 20px; color: var(--text); margin: 0; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 16px; }

    /* RELATED LINKS */
    .related-links-box {
      border: 1px dashed rgba(77, 208, 255, 0.3); padding: 30px; border-radius: var(--radius-md);
      background: linear-gradient(to bottom, rgba(20, 34, 48, 0.8), rgba(10, 17, 24, 0.8));
    }
    .related-links-box h3 { font-size: 20px; margin-bottom: 20px; color: var(--accent); text-align: center; }
    .link-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
    .link-card {
      background: var(--surface); padding: 16px; border-radius: var(--radius-sm);
      text-align: center; font-weight: 600; color: var(--text); border: 1px solid rgba(255,255,255,0.05);
      text-transform: capitalize;
    }
    .link-card:hover { background: var(--accent); color: #000; border-color: var(--accent); transform: translateY(-2px); }

    @media (min-width: 600px) {
      .link-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (min-width: 768px) {
      .link-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
    }

    /* FINAL CTA */
    .final-cta {
      background: linear-gradient(45deg, #142230, #0a1118);
      padding: 60px 20px; text-align: center; border-radius: var(--radius-lg);
      border: 2px solid rgba(255, 209, 102, 0.2); position: relative; overflow: hidden;
    }
    .final-cta::before {
      content: ''; position: absolute; width: 200px; height: 200px;
      background: radial-gradient(circle, rgba(77,208,255,0.1) 0%, transparent 70%);
      top: -100px; left: -100px;
    }
    .final-cta h2 { font-size: 32px; color: var(--accent2); margin-bottom: 16px; }
    .final-cta p { font-size: 18px; color: var(--muted); margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
    .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
    .cta-buttons .btn { min-width: 160px; }

    /* FOOTER (Matches Homepage structure) */
    footer { background-color: #05090d; padding: 60px 0 20px; border-top: 1px solid rgba(143, 168, 184, 0.1); margin-top: auto; }
    .footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand { font-family: var(--font-display); font-size: 32px; color: var(--text); margin-bottom: 16px; }
    .footer-brand span { color: var(--accent); }
    .footer-tagline { color: var(--muted); font-size: 14px; max-width: 300px; line-height: 1.6; }
    .footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .footer-links a { color: var(--muted); font-size: 14px; }
    .footer-links a:hover { color: var(--accent); }
    .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.05); color: var(--muted); font-size: 14px; }

    @media (min-width: 768px) {
      .footer-grid { grid-template-columns: 1fr 2fr; }
      .footer-links { grid-template-columns: repeat(3, 1fr); }
    }


/* 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; }