.site-nav {
      position: sticky; top: 0; z-index: 900;
      background: rgba(0, 0, 40, 0.85);
      backdrop-filter: blur(16px) saturate(160%); -webkit-backdrop-filter: blur(16px) saturate(160%);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
    }
    .site-nav-inner { max-width: 1080px; margin: 0 auto; display: flex; align-items: center; gap: 24px; padding: 10px 20px; }
    .site-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; letter-spacing: 0.02em; color: var(--text-primary); }
    .site-logo .logo-mark { flex-shrink: 0; }
    .site-logo em { color: var(--accent); font-style: normal; }
    .site-nav-links { display: flex; gap: 6px; flex: 1; }
    .site-nav-links a {
      position: relative;
      display: flex; align-items: center; gap: 6px;
      color: var(--text-secondary); font-size: 14px;
      padding: 8px 12px; border-radius: 8px;
      transition: color 150ms, background 150ms;
    }
    .site-nav-links .nav-icon { width: 15px; height: 15px; color: var(--accent); flex-shrink: 0; }
    .site-nav-links a:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.04); }
    
    .site-nav-links a::after {
      content: ''; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
      border-radius: 1px;
      transform: scaleX(0); transform-origin: left;
      transition: transform 200ms;
    }
    .site-nav-links a:hover::after { transform: scaleX(1); }
    .site-nav-actions { display: flex; gap: 10px; align-items: center; margin-left: auto; } 
    
    a[data-lang-switch] {
      display: inline-flex; align-items: center; gap: 7px;
      color: var(--text-secondary); font-size: 13px;
      border: 1px solid var(--border); border-radius: 999px;
      padding: 7px 15px;
      transition: color 150ms, border-color 150ms, background 150ms;
    }
    a[data-lang-switch]::before {
      content: '';
      width: 14px; height: 14px; flex-shrink: 0;
      background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232ECC71' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='2' y1='12' x2='22' y2='12'/%3E%3Cpath d='M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z'/%3E%3C/svg%3E") no-repeat center / contain;
    }
    a[data-lang-switch]:hover { color: var(--accent); border-color: rgba(46, 204, 113, 0.4); background: rgba(46, 204, 113, 0.08); }
    
    .hamburger {
      display: none;
      flex-direction: column; gap: 5px;
      background: none; border: 1px solid var(--border); border-radius: 8px;
      padding: 11px 10px;
    }
    .hamburger span { width: 20px; height: 2px; background: var(--text-primary); border-radius: 1px; transition: transform 200ms, opacity 200ms; }
    .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    
    .mobile-menu {
      position: fixed; inset: 0; z-index: 950;
      background: rgba(0, 0, 40, 0.98);
      backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
      display: flex; flex-direction: column;
      opacity: 0; visibility: hidden; transform: translateY(-16px);
      transition: opacity 240ms, transform 240ms, visibility 240ms;
    }
    .mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
    .mobile-menu-head {
      display: flex; align-items: center; justify-content: space-between;
      padding: 12px 20px; border-bottom: 1px solid var(--border);
    }
    .mobile-menu-head .site-logo { font-size: 16px; }
    .mobile-close {
      background: none; border: 1px solid var(--border); border-radius: 8px;
      width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
      color: var(--text-secondary);
    }
    .mobile-close:hover { color: var(--text-primary); border-color: var(--border-strong); }
    .mobile-menu-body {
      display: flex; flex-direction: column; justify-content: flex-start; 
      padding: 12px 32px 0; gap: 2px;
    }
    .mobile-menu-body a {
      position: relative;
      display: flex; align-items: center; gap: 12px;
      font-size: 20px; font-weight: 600; color: var(--text-primary);
      padding: 13px 4px; min-height: 46px;
      transform: translateY(16px); opacity: 0;
      transition: transform 260ms, opacity 260ms, color 150ms;
    }
    .mobile-menu-body .menu-icon { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; transition: transform 150ms; }
    .mobile-menu-body a:hover .menu-icon { transform: translateX(3px); }
    .mobile-menu.open .mobile-menu-body a { transform: none; opacity: 1; }
    .mobile-menu.open .mobile-menu-body a:nth-child(1) { transition-delay: 50ms; }
    .mobile-menu.open .mobile-menu-body a:nth-child(2) { transition-delay: 100ms; }
    .mobile-menu.open .mobile-menu-body a:nth-child(3) { transition-delay: 150ms; }
    .mobile-menu.open .mobile-menu-body a:nth-child(4) { transition-delay: 200ms; }
    .mobile-menu.open .mobile-menu-body a:nth-child(5) { transition-delay: 250ms; }
    .mobile-menu-body a:hover { color: var(--accent); }
    
    .mobile-menu-body a::after {
      content: ''; position: absolute; left: 4px; right: 4px; bottom: 6px; height: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
      border-radius: 1px;
      transform: scaleX(0); transform-origin: left;
      transition: transform 200ms;
    }
    .mobile-menu-body a:hover::after { transform: scaleX(1); }
    .mobile-menu-foot {
      display: flex; flex-direction: column; gap: 12px;
      padding: 18px 32px calc(18px + env(safe-area-inset-bottom));
      
    }
    .mobile-menu-foot .lang-pill { text-align: center; color: var(--accent); padding: 8px; }

    
    .hero {
      position: relative; overflow: hidden;
      padding: 20px 20px 0px;
    }
    .hero::before, .hero::after {
      content: ''; position: absolute; border-radius: 50%; pointer-events: none;
      filter: blur(80px); opacity: 0.5;
      animation: auroraFloat 20s ease-in-out infinite alternate;
    }
    .hero::before { width: 420px; height: 420px; top: -140px; left: 8%; background: radial-gradient(circle, rgba(46, 204, 113, 0.35), transparent 70%); }
    .hero::after { width: 360px; height: 360px; bottom: -10px; right: 6%; background: radial-gradient(circle, rgba(0, 216, 255, 0.22), transparent 70%); animation-delay: -10s; }
    @keyframes auroraFloat { from { transform: translateY(0) scale(1); } to { transform: translateY(24px) scale(1.08); } }
    .hero-inner {
      position: relative; z-index: 1;
      max-width: 1080px; margin: 0 auto;  
      text-align: center;
    }
    
    .hero-icons { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
    .bg-icon {
      position: absolute;
      width: var(--s, 44px); height: var(--s, 44px);
      color: var(--accent); opacity: 0.3;
      animation: bgFloat var(--dur, 4s) ease-in-out infinite alternate;
      animation-delay: var(--delay, 0s);
    }
    .bg-icon.cyan { color: var(--accent-cyan); }
    .bg-icon.dim { color: var(--text-secondary); opacity: 0.16; }
    .bg-icon.small { opacity: 0.38; }
    @keyframes bgFloat {
      from { transform: translateY(-18px); }
      to { transform: translateY(28px); }
    }
    
    .section-box {
      position: relative;
      background: var(--bg-surface);
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: 0 0 24px rgba(46, 204, 113, 0.07), 0 0 64px rgba(0, 216, 255, 0.04);
    }
    .section-box::before {
      content: '';
      position: absolute; inset: 0;
      border-radius: inherit;
      padding: 2px; 
      background: linear-gradient(160deg, #3cebb8, #1b6fb0, #00d9ff); 
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      mask-composite: exclude;
      pointer-events: none;
    }
    
    .section-box .card { background: transparent; }
    
    .section-box.no-border::before { display: none; }
    .section-box.no-border { box-shadow: none; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      border: 1px solid rgba(46, 204, 113, 0.4); border-radius: 999px;
      background: rgba(46, 204, 113, 0.08);
      color: var(--accent); font-size: 13px;
      padding: 6px 16px; margin-bottom: 30px;
    }
    .hero h1 { font-size: 42px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; }
    .hero .capsule {
      margin: 32px auto 0;
      background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius);
      padding: 26px 32px; color: var(--text-secondary); font-size: 15px;
    }
    .hero-cta { display: flex; gap: 14px; margin-top: 38px; flex-wrap: wrap; justify-content: center; }
    .hero-sub { color: var(--text-muted); margin-top: 26px; font-size: 13px; }

    .section { max-width: 1080px; margin: 0 auto; padding: 48px 20px 0; }
    .section-title { font-size: 24px; font-weight: 600; margin-bottom: 24px; text-align: center; }

    
    .rental-hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 28px; align-items: center; }
    .rental-config { padding: 6px 0; }
    .rental-title-big { font-size: 26px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 6px; }
    .rental-title-big em { font-style: normal; background: linear-gradient(90deg, var(--accent), var(--accent-cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
    .rental-sub { color: var(--text-muted); font-size: 13px; margin-bottom: 18px; }
    .field-label { font-size: 13px; color: var(--text-secondary); margin: 12px 0 8px; }
    .bishu-group { display: flex; gap: 12px; flex-wrap: wrap; }
    .bishu-group .radio-option { padding: 10px 16px; font-size: 14px; min-height: 44px; display: inline-flex; align-items: center; }
    .custom-row { display: flex; gap: 10px; margin-top: 10px; align-items: center; }
    .custom-row .input { flex: 1; min-width: 0; }
    .custom-note { font-size: 12px; color: var(--text-muted); margin-top: 8px; min-height: 16px; }
    .custom-note.error { color: var(--danger); }
    .rental-detail { font-size: 12px; color: var(--text-muted); }
    .rental-detail b { color: var(--text-secondary); font-weight: 500; }
    
    .rental-pay { text-align: center; padding: 10px 0; }
    .pay-label { font-size: 13px; color: var(--text-secondary); letter-spacing: 0.08em; }
    .pay-number-big {
      font-size: 56px; font-weight: 800; font-variant-numeric: tabular-nums;
      line-height: 1.15; letter-spacing: -0.03em; margin: 10px 0 6px;
      background: linear-gradient(120deg, #fff, var(--accent) 55%, var(--accent-cyan));
      -webkit-background-clip: text; background-clip: text; color: transparent;
      text-shadow: 0 0 40px rgba(46, 204, 113, 0.25);
    }
    .pay-number-big .unit { font-size: 20px; font-weight: 600; letter-spacing: 0; margin-left: 8px; }
    .pay-badge {
      display: inline-flex; align-items: center; gap: 6px;
      border: 1px solid rgba(46, 204, 113, 0.35); border-radius: 999px;
      background: rgba(46, 204, 113, 0.08);
      color: var(--accent); font-size: 12px; padding: 4px 12px; margin-top: 6px;
    }
    
    .rental-address-row {
      display: flex; align-items: center; gap: 12px;
      background: var(--bg-elevated); border: 1px solid var(--border-strong);
      border-radius: var(--radius); padding: 12px 16px; margin-top: 20px;
    }
    .rental-address-row .addr-label { font-size: 13px; color: var(--text-secondary); white-space: nowrap; }
    .rental-address-row .addr {
      flex: 1; font-family: var(--font-num); font-size: 19px; font-weight: 600;
      color: var(--accent-cyan); word-break: break-all; min-width: 0;
      text-shadow: 0 0 18px rgba(0, 216, 255, 0.25);
    }
    .rental-address-row button { flex-shrink: 0; }
    .rental-qr-row { display: flex; align-items: center; gap: 20px; margin-top: 14px; }
    .rental-qr-row canvas { background: #fff; border-radius: 10px; padding: 6px; width: 96px; height: 96px; }
    .qr-tip { font-size: 13px; color: var(--text-secondary); }
    .rental-note { font-size: 12px; color: var(--text-muted); margin-top: 12px; }

    
    .price-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
    .price-item { text-align: center; padding: 16px 10px; }
    .price-item .label { font-size: 13px; color: var(--text-secondary); }
    .price-item .value { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent); margin-top: 6px; }
    .price-item .unit { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
    .price-foot { text-align: center; color: var(--text-muted); font-size: 12px; margin-top: 14px; }
    
    .coming-soon { font-size: 12px; font-weight: 400; color: var(--text-muted); }
    .contact-line { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 16px; color: var(--text-secondary); font-size: 14px; }

    
    .agent-hero { display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; align-items: center; }
    .agent-left .rental-title-big { margin-bottom: 10px; }
    .agent-left p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }
    .agent-cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
    .feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .feature-item {
      display: flex; align-items: center; gap: 10px;
      padding: 14px 16px; border-radius: var(--radius-sm);
      background: var(--bg-elevated); border: 1px solid var(--border);
      transition: border-color 150ms;
    }
    .feature-item:hover { border-color: rgba(46, 204, 113, 0.4); }
    .feature-item .icon { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
    .feature-item span { font-size: 14px; }
    .about-text { color: var(--text-secondary); font-size: 15px; }

    
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .faq-list .card + .card { margin-top: 0; }
    .faq-item { margin-bottom: 12px; }
    .faq-item summary {
      cursor: pointer; list-style: none;
      display: flex; align-items: center; justify-content: space-between; gap: 12px;
      font-size: 16px; font-weight: 500; padding: 14px 18px;
    }
    .faq-item summary h2 { font: inherit; margin: 0; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: '+'; font-size: 20px; color: var(--accent); transition: transform 150ms; flex-shrink: 0;
    }
    .faq-item details[open] summary::after { transform: rotate(45deg); }
    .faq-item .answer { padding: 0 18px 14px; color: var(--text-secondary); font-size: 14px; }

    .site-footer { border-top: 1px solid var(--border); margin-top: 56px; padding: 24px 20px; text-align: center; color: var(--text-muted); font-size: 13px; }

    @media (min-width: 769px) {
      .mobile-menu { display: none; }
    }
    @media (max-width: 768px) {
      .site-nav-links { display: none; }
      .site-nav-actions a[data-lang-switch] { display: none; } 
      .site-nav-actions .btn { padding: 4px 10px; min-height: 30px; font-size: 12px; } 
      .hamburger { display: inline-flex; }
      .hero { padding: 56px 16px 64px; }
      .hero h1 { font-size: 27px; }
      
      .bg-icon { --s: 30px !important; }
      .bg-icon:nth-child(n+7) { display: none; }
      .section-box { padding: 14px 12px; }
      .hero-cta { justify-content: center; }
      .hero .capsule, .hero-sub { text-align: center; }
      .rental-hero { grid-template-columns: 1fr; gap: 8px; }
      .agent-hero { grid-template-columns: 1fr; gap: 24px; }
      .agent-cta-row { justify-content: center; }
      .pay-number-big { font-size: 44px; }
      
      .bishu-group { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
      .bishu-group .radio-option { width: 100%; justify-content: center; text-align: center; padding: 10px 6px; }
      .rental-detail { margin-top: 0; }
      .faq-list { grid-template-columns: 1fr; }
      .section { padding-top: 36px; }
      .section-title { font-size: 20px; }
    }