@import"https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap";:root{--bg: #f3efe7;--surface: #ffffff;--surface-alt: #faf7f2;--paper: #fffdf9;--ink: #1c1b19;--ink-secondary: #3b3935;--muted: #6e6960;--muted-light: #9c968c;--line: #e3ded5;--line-subtle: #ede9e1;--gold: #b08d55;--gold-dark: #967440;--gold-soft: #fbf6ec;--forest: #2e5c3b;--forest-soft: #edf5ef;--danger: #a12e27;--danger-soft: #fdf2f1;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--shadow-card: 0 4px 20px -4px rgba(28, 27, 25, .06), 0 1px 3px rgba(28, 27, 25, .04);--shadow-paper: 0 12px 36px -8px rgba(28, 27, 25, .12), 0 2px 6px rgba(28, 27, 25, .04)}*{box-sizing:border-box}body{margin:0;background-color:var(--bg);color:var(--ink);font-family:IBM Plex Sans,-apple-system,BlinkMacSystemFont,Segoe 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.16s ease}.primary-btn:hover:not(:disabled){background:var(--forest);border-color:var(--forest);box-shadow:0 6px 18px #2e5c3b40;transform:translateY(-1px)}.primary-btn:active:not(:disabled){transform:translateY(0)}.primary-btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn-icon{width:18px;height:18px}.btn-icon-sm{width:15px;height:15px}.mobile-switch-btn{display:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;background:transparent;border:1px dashed var(--line);color:var(--ink-secondary);font-size:13px;font-weight:500;padding:12px;border-radius:var(--radius-sm);cursor:pointer;align-items:center;justify-content:center;gap:6px;transition:all .14s ease}.mobile-switch-btn:hover{border-color:var(--gold);color:var(--gold-dark)}.alert-message{margin:4px 0 0;padding:12px 14px;border-radius:var(--radius-sm);font-size:13px;line-height:1.45}.alert-message.error{background:var(--danger-soft);border:1px solid 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2px}.banner-sub{font-size:11px;color:var(--muted)}.preview-nights-block{background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px}.nights-number{font-size:22px;font-weight:700;line-height:1}.nights-label{font-size:9px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:#cfc8bb;margin-top:4px}.preview-payment-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.preview-badge{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--forest);background:var(--forest-soft);border:1px solid rgba(46,92,59,.2);padding:6px 10px;border-radius:var(--radius-sm)}.preview-pay-col.right{text-align:right}.pay-value{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-top:3px}.pay-amount{display:block;font-size:18px;font-weight:700;color:var(--ink);margin-top:3px}.preview-closing{display:flex;align-items:center;justify-content:space-between;gap:16px}.note-sub{font-size:14px;font-weight:600;color:var(--ink)}.note-text{margin:4px 0 0;font-size:13px;color:var(--muted)}.preview-stamp-wrapper{position:relative;width:94px;height:94px;flex-shrink:0}.preview-stamp-img{width:100%;height:100%;object-fit:contain}.preview-stamp-date{position:absolute;bottom:22px;left:0;right:0;text-align:center;font-family:Georgia,serif;font-size:7px;font-weight:600;color:#9a6b25}.preview-footer{display:flex;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line);font-size:11px;color:var(--muted-light)}@media (max-width: 960px){.shell{padding:12px 14px 48px}.mobile-tabs{display:grid;max-width:580px;margin-left:auto;margin-right:auto}.mobile-switch-btn{display:inline-flex}.mobile-back-form-btn{display:inline-block}.layout{display:block;max-width:580px;margin:0 auto;width:100%}.form-panel.mobile-hidden,.preview-pane.mobile-hidden{display:none!important}.form-panel.mobile-visible,.preview-pane.mobile-visible{display:flex!important}.form-panel{padding:22px 18px;border-radius:var(--radius-md);width:100%}.preview-pane{width:100%}.paper-preview{padding:26px 20px;gap:16px;min-height:auto}.preview-letterhead{flex-direction:column;align-items:flex-start;gap:8px}.preview-contact{text-align:left;font-size:10px}}@media (max-width: 520px){.shell{padding:10px 10px 44px}.form-panel{padding:18px 14px}.section-card{padding:14px 12px 16px}.fields-grid.two-cols{grid-template-columns:1fr}.amount-composite{grid-template-columns:96px 1fr}.topbar{flex-wrap:wrap;gap:10px}.brand-heading,.brand-sep{display:none}.preview-stay-banner{grid-template-columns:1fr 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