:root{--bg:#f4f6fb;--panel:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--primary:#0f172a;--accent:#2563eb;--ok:#16a34a;--warn:#d97706;--bad:#dc2626;--shadow:0 20px 60px rgba(15,23,42,.08);--r:22px}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f8fafc 0,#eef2ff 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px}.topbar{position:sticky;top:0;z-index:30;display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;padding:14px 24px;background:rgba(255,255,255,.86);backdrop-filter:blur(20px);border-bottom:1px solid rgba(229,231,235,.8)}.brand,.brand-login{display:flex;gap:12px;align-items:center;color:var(--text);text-decoration:none}.brand 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span{color:var(--muted)}.item-table{display:grid;gap:10px}.item-row{display:grid;grid-template-columns:1.4fr 1fr 100px 72px 120px 84px 42px;gap:8px;align-items:center}.item-row input{min-width:0}.item-row .small{max-width:90px}.item-row .num{text-align:right}.totals,.sum-box{display:flex;gap:16px;justify-content:flex-end;flex-wrap:wrap;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}.sum-box strong{font-size:18px}.detail-grid{display:grid;grid-template-columns:150px 1fr;gap:12px}.detail-grid span{color:var(--muted)}.flash{padding:14px 16px;border-radius:16px;margin-bottom:16px;font-weight:700}.flash.success{background:#dcfce7;color:#166534}.flash.error{background:#fee2e2;color:#991b1b}.hint{color:var(--muted);font-size:13px}.danger-zone{border-color:#fecaca}code{display:block;background:#0f172a;color:#e5e7eb;border-radius:14px;padding:12px;margin:10px 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