:root{color-scheme:light;--bg: #eef1ed;--surface: #ffffff;--surface-2: #f7f8f4;--surface-3: #ebe9df;--ink: #202522;--muted: #677069;--quiet: #8b938b;--line: #d9ded5;--strong-line: #bac5b7;--teal: #0f766e;--teal-2: #115e59;--amber: #d97706;--red: #b42318;--green: #17803c;--shadow: 0 18px 50px rgba(33, 40, 35, .12);--radius: 8px;--theme-accent: var(--teal);--theme-accent-soft: #d7f3ef;--theme-surface: #eff9f7;--theme-border: #9fd8d1}*{box-sizing:border-box}body{margin:0;min-width:320px;color:var(--ink);background:linear-gradient(90deg,rgba(15,118,110,.06) 1px,transparent 1px),linear-gradient(180deg,rgba(15,118,110,.04) 1px,transparent 1px),var(--bg);background-size:42px 42px;font-family:Avenir Next,Segoe UI,Helvetica Neue,Arial,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;padding:14px}.topbar{position:sticky;top:10px;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);background:#ffffffe0;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.brand-area{display:flex;align-items:center;gap:10px;min-width:230px}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:var(--radius);color:#fff;background:linear-gradient(135deg,var(--teal),#1f9d8f);font-weight:800}.brand-area strong,.brand-area span{display:block}.brand-area span{color:var(--muted);font-size:13px}.command-bar{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px}.command,.small-action,.icon-button{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;padding:0 12px;font-weight:700;transition:transform .16s ease,border-color .16s ease,background .16s 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#21282314}.panel-block,.tool-section{padding:14px}.panel-heading,.section-title.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-heading span,.section-title h2{font-size:16px;font-weight:800}.panel-heading small,.section-title p{margin:4px 0 0;color:var(--muted);font-size:13px}.template-list,.saved-list,.items-list{display:grid;gap:8px;margin-top:12px}.template-button,.saved-item button:first-child{position:relative;width:100%;text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,#ffffff80,#fff0),var(--template-surface, var(--surface-2));padding:11px 12px 10px;color:var(--ink);overflow:hidden;box-shadow:inset 0 1px #ffffff80}.template-button:before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--template-accent, var(--teal))}.template-button strong,.template-button span,.template-button small,.saved-item strong,.saved-item span,.saved-item 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var(--line);border-radius:var(--radius);background:var(--surface-2);padding:12px}.item-topline{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.summary-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;overflow:hidden;background:var(--line)}.summary-strip div{padding:13px;background:var(--surface)}.summary-strip span,.proposal-meta span,.proposal-totals span,.proposal-header span,.proposal-footer span{display:block;color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase}.summary-strip strong{display:block;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.summary-strip .total-summary{background:var(--theme-accent-soft)}.total-summary strong{color:var(--theme-accent)}.template-preview{background:linear-gradient(180deg,#ffffffeb,#ffffffc7),var(--theme-surface);border-color:var(--theme-border)}.template-preview-box{padding:12px;border-radius:var(--radius);border:1px solid 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button.active{color:#fff;background:var(--teal);border-color:var(--teal)}.workspace{display:block;margin-top:0}.side-panel,.editor-panel,.preview-panel{display:none}.side-panel.mobile-visible,.editor-panel.mobile-visible,.preview-panel.mobile-visible{display:grid}.form-grid.two,.form-grid.three,.form-grid.item-grid,.summary-strip,.proposal-header,.proposal-meta,.proposal-item,.proposal-section.split{grid-template-columns:1fr}.proposal-provider,.proposal-money{text-align:left}.proposal-paper{padding:18px}.proposal-header h1{font-size:25px}.mobile-actions{position:fixed;left:10px;right:10px;bottom:10px;z-index:30;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:6px;border:1px solid var(--line);border-radius:var(--radius);background:#fffffff0;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.mobile-actions 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