:root{--bg:#f3f2ed;--card:#fff;--ink:#161713;--muted:#797b72;--line:#e5e4dd;--accent:#c9f05d;--accent-dark:#26330a;--soft:#f7f7f3;--danger:#ba4238;--shadow:0 12px 35px #252a1b0b}*{box-sizing:border-box}html{font-family:"Segoe UI",Tahoma,Arial,sans-serif}body{margin:0;background:var(--bg);color:var(--ink);transition:.2s}button,input,select{font:inherit}.app-shell{width:min(760px,100%);margin:auto;padding:22px 18px 70px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.brand{display:flex;align-items:center;gap:11px}.brand-mark{display:grid;place-items:center;width:43px;height:43px;background:var(--ink);color:var(--accent);border-radius:13px;font-weight:900;font-size:1.25rem;transform:rotate(-4deg)}h1,h2,h3,p{margin:0}.brand h1{font-size:1.25rem}.brand p{color:var(--muted);font-size:.72rem;margin-top:2px}.round-btn,.date-arrow,.close,.more{border:1px solid 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label{font-size:.7rem;color:var(--muted)}.calculator-grid label span{display:flex;align-items:center;gap:5px;margin-top:5px;background:var(--soft);border:1px solid var(--line);border-radius:11px;padding:0 10px;color:var(--ink)}.calculator-grid input,.calculator-grid select{width:100%;border:0;background:transparent;padding:10px 0;color:var(--ink);outline:0}.plate-result{background:var(--ink);color:white;border-radius:14px;padding:13px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;font-size:.72rem}.plate-result 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