.bmt{--bmt-ink:#292721;--bmt-soft:#eee8dd;--bmt-accent:#80532a;--bmt-line:#d9cfbf;color:var(--bmt-ink);border:1px solid var(--bmt-line);box-sizing:border-box;background:#fcfaf5;border-radius:22px;max-width:100%;font-family:system-ui,-apple-system,Noto Sans JP,sans-serif;font-size:16px;line-height:1.8;overflow:hidden}.bmt *{box-sizing:border-box}.bmt [hidden]{display:none!important}.bmt p{margin:.65em 0}.bmt .bmt-head h3{margin:.25em 0;font-size:clamp(1.35rem,3.5vw,2rem);line-height:1.5}.bmt-head{background:#eee6d8;padding:26px 28px 20px}.bmt-eyebrow{color:#70512f;letter-spacing:.14em;font-size:.78rem;font-weight:750}.bmt-static,.bmt-limit{padding:15px 28px}.bmt-static{border-bottom:1px solid var(--bmt-line)}.bmt-fine{color:#615a50;font-size:.83rem}.bmt-group{border:0;border-bottom:1px solid var(--bmt-line);min-width:0;margin:0;padding:22px 28px 25px}.bmt-group legend{max-width:100%;padding:22px 0 0;font-size:1.08rem;font-weight:750;line-height:1.65}.bmt-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 22px;margin:18px 0;display:grid}.bmt-field{min-width:0;display:block}.bmt-field>span{margin-bottom:8px;font-weight:650;line-height:1.6;display:block}.bmt-field select,.bmt-field input{color:#24221d;width:100%;max-width:100%;font:inherit;background:#fff;border:1px solid #a89e8e;border-radius:8px;min-height:48px;padding:12px;font-size:16px;display:block}.bmt-field small{color:#615a50;overflow-wrap:anywhere;margin-top:7px;font-size:.81rem;line-height:1.65;display:block}.bmt button{cursor:pointer;font:inherit;background:var(--bmt-accent);color:#fff;white-space:normal;border:1px solid #80532a;border-radius:10px;max-width:100%;min-height:48px;padding:12px 22px;font-weight:650;line-height:1.5}.bmt .bmt-secondary{color:#644322;background:#fff}.bmt button:hover{filter:brightness(.95)}.bmt :focus-visible{outline-offset:3px;outline:3px solid #416981}.bmt-output{margin-top:20px;scroll-margin-top:24px}.bmt-output:focus{outline-offset:5px;border-radius:8px;outline:2px solid #97754e}.bmt-result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.bmt-result-card{border:1px solid var(--bmt-line);background:#fff;border-radius:12px;min-width:0;padding:18px}.bmt .bmt-result-card h4{margin:0 0 9px;font-size:1.12rem;line-height:1.5}.bmt-result-card p{overflow-wrap:anywhere;font-size:.91rem}.bmt-result-card .bmt-state{background:#eee8dd;border-radius:5px;padding:3px 9px;font-size:.79rem;display:inline-block}.bmt-result-card .bmt-warn{color:#6c3c12;background:#f7e6d4}.bmt-summary,.bmt-money{background:#efe9de;border-radius:12px;margin:14px 0;padding:18px}.bmt-money strong{overflow-wrap:anywhere;margin:8px 0;font-size:1.6rem;line-height:1.45;display:block}.bmt-error{color:#8b2e1b;background:#ffede6;border-radius:8px;padding:12px}.bmt-limit{background:#eee8dd;font-size:.87rem}.bmt-limit p{margin:4px 0 0}.bmt-status{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}@media (width<=620px){.bmt-grid,.bmt-result-grid{grid-template-columns:1fr}.bmt-head,.bmt-group,.bmt-static,.bmt-limit{padding-left:18px;padding-right:18px}.bmt button{width:100%}.bmt{border-radius:16px}.bmt-group legend{font-size:1rem}.bmt-result-card{padding:15px}}@media (prefers-reduced-motion:reduce){.bmt *{scroll-behavior:auto!important}}.bmt{--bmt-ink:var(--foreground);--bmt-soft:var(--surface-note);--bmt-line:var(--border);background:var(--surface-soft);color:var(--foreground)}.bmt .bmt-head,.bmt .bmt-limit,.bmt .bmt-summary,.bmt .bmt-money{background:var(--surface-note)}.bmt .bmt-result-card,.bmt .bmt-field select,.bmt .bmt-field input{background:var(--background);color:var(--foreground)}.bmt .bmt-eyebrow,.bmt .bmt-fine,.bmt .bmt-field small{color:var(--muted-foreground)}.bmt .bmt-head h3{border:0;margin:.25em 0;padding:0;font-size:clamp(1.35rem,3.5vw,2rem);line-height:1.5}.bmt .bmt-result-card h4{margin:0 0 9px;font-size:1.12rem;font-weight:750;line-height:1.5}.bmt .bmt-field input[aria-invalid=true]{border:2px solid #b34528}.dark .bmt .bmt-result-card .bmt-state{color:#eee5d4;background:#38362f}.dark .bmt .bmt-result-card .bmt-warn{color:#ffdfa8;background:#45341f}.dark .bmt .bmt-error{color:#ffcfba;background:#452820}