.stm-calculator{--stm-ink:#332c27;--stm-cream:#faf4e8;--stm-red:#b52b25;--stm-border:#e3d8c8;box-sizing:border-box;color:var(--stm-ink);font:inherit;max-width:760px;width:100%;margin:22px 0;background:#fff}.stm-calculator *{box-sizing:border-box}.stm-form{display:block!important;margin:0!important;width:100%}.stm-calculator h3{font-size:19px;margin:0 0 16px}.stm-calculator p{line-height:1.5;margin:8px 0}.stm-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.stm-sizes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:16px 0}.stm-field{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:600;min-width:0}.stm-field input,.stm-field select,.stm-fixed{width:100%!important;min-width:0;max-width:100%;height:46px;border:1px solid var(--stm-border)!important;border-radius:5px;padding:10px 12px!important;background:#fff;color:var(--stm-ink);font:inherit;font-size:15px;box-shadow:none}.stm-fixed{display:flex;align-items:center;background:var(--stm-cream)}.stm-field input:focus,.stm-field select:focus,.stm-submit:focus-visible{outline:2px solid var(--stm-red);outline-offset:2px}.stm-field input[readonly]{background:#f2f0ec}.stm-design-section{margin:24px 0;background:var(--stm-cream);border:1px solid var(--stm-border);padding:20px;border-radius:8px}.stm-help{font-size:12px;color:#665c50}.stm-design-row{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:10px 14px;padding:16px 0;border-top:1px solid var(--stm-border);margin-top:14px}.stm-artwork{grid-column:1/-1}.stm-design-row:last-child{padding-bottom:0}.stm-quote{border:1px solid var(--stm-border);border-radius:8px;background:var(--stm-cream);padding:20px;margin:20px 0;display:flex;flex-direction:column;gap:4px}.stm-price-label{font-size:13px;font-weight:600}.stm-quote [data-price]{font-size:32px;line-height:1.3}.stm-quote [data-unit]{font-size:14px}.stm-quote p{font-size:12px;max-width:520px;color:#665c50}.stm-error{background:#fff1ef;border-left:3px solid var(--stm-red);padding:12px;color:#842019;font-size:14px}.stm-error[hidden]{display:none!important}.stm-submit{width:100%;border:0;border-radius:5px;padding:15px 20px;background:var(--stm-red);color:white;font-size:16px;font-weight:700;cursor:pointer}.stm-submit:hover{background:#96221d}.stm-submit:disabled{opacity:.5;cursor:not-allowed}.stm-unavailable{padding:12px;background:#f6f6f6;font-size:14px}@media(max-width:520px){.stm-options{grid-template-columns:1fr}.stm-design-section,.stm-quote{padding:16px}}