:root{color-scheme:light;--bg:#f4f7fb;--panel:#fff;--ink:#152539;--sub:#53657e;--brand:#2563eb;--dark:#1c3c70;--stroke:#dce5f1;--mint:#eafaf4;--alert:#fff6df;--shadow:0 10px 36px rgba(36,71,110,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,'Noto Sans JP','Yu Gothic',sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}a{color:var(--brand)}header{background:#fff;border-bottom:1px solid var(--stroke)}.nav{max-width:1040px;padding:13px 20px;margin:auto;display:flex;align-items:center;gap:20px;justify-content:space-between;flex-wrap:wrap}.brand{font-weight:850;font-size:1.1rem;color:var(--dark);text-decoration:none;letter-spacing:-.025em}.nav-links{display:flex;gap:8px;flex-wrap:wrap}.nav-links a{color:#435875;text-decoration:none;font-size:.84rem;border-radius:8px;padding:7px 9px}.nav-links a:hover,.nav-links a[aria-current='page']{background:#e9f0ff;color:#154bb9}.container{max-width:1040px;padding:34px 20px 72px;margin:auto}.eyebrow{color:var(--brand);font-size:.77rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.hero{display:grid;grid-template-columns:1fr auto;align-items:end;gap:20px;margin-bottom:22px}h1{font-size:clamp(1.7rem,4vw,2.6rem);line-height:1.24;margin:7px 0 10px;letter-spacing:-.035em}h2{font-size:1.25rem;margin:2px 0 14px}h3{font-size:1.02rem;margin:14px 0 8px}.lede{color:var(--sub);max-width:700px;margin:0}.badge{border:1px solid #d7e8f9;border-radius:999px;padding:8px 12px;color:#275c94;background:#f4faff;font-size:.8rem;white-space:nowrap}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.card{background:var(--panel);border:1px solid var(--stroke);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.span2{grid-column:1/-1}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}label{display:flex;flex-direction:column;gap:5px;font-weight:750;font-size:.85rem;color:#30435e}input,select,textarea{font:inherit;width:100%;min-width:0;border:1px solid #c5d3e7;border-radius:10px;padding:11px 12px;color:var(--ink);background:#fff}textarea{resize:vertical;min-height:170px}input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:3px solid #9ec1ff;outline-offset:2px}.check{display:flex;flex-direction:row;align-items:center;gap:9px;font-weight:500}.check input{width:18px;height:18px;accent-color:var(--brand)}button{cursor:pointer;appearance:none;border:0;border-radius:10px;padding:10px 15px;font-weight:780;font:inherit}.primary{background:var(--brand);color:white}.secondary{background:#e9f0ff;color:#234d92}.ghost{background:#f1f5fa;color:#415575}.action-bar{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}.result{background:linear-gradient(130deg,#edf7ff,#f5fffb);border:1px solid #cbdff0;border-radius:13px;padding:19px;margin-top:16px}.result .big{font-size:clamp(1.65rem,4vw,2.4rem);font-weight:880;letter-spacing:-.025em;color:#1d4e91}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin-top:16px}.metric{padding:12px;background:#fff;border:1px solid var(--stroke);border-radius:10px}.metric strong{font-size:1.13rem;display:block}.muted,small{color:var(--sub)}.warning,.error{border-radius:10px;padding:11px 12px;margin:10px 0 0}.warning{background:var(--alert);color:#76531c}.error{background:#fff0f1;color:#ad233b}.helper{border-left:4px solid var(--brand);padding:8px 14px;background:#eff5ff;border-radius:4px;color:#334c6c}.tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.tool{text-decoration:none;color:var(--ink);display:block}.tool:hover{transform:translateY(-2px)}.tool p{color:var(--sub);font-size:.9rem}.tool .arrow{color:var(--brand);font-weight:800}.legal{font-size:.88rem;color:#5a6374}.faq p{margin:0 0 15px;color:#51637b}footer{border-top:1px solid var(--stroke);text-align:center;font-size:.8rem;padding:24px;color:#64748b}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row>*{flex:1}table{width:100%;border-collapse:collapse;font-size:.83rem}th,td{padding:10px 9px;text-align:left;border-bottom:1px solid var(--stroke)}th{background:#f6f9fd;color:#405671}td:nth-child(2),td:nth-child(3),td:nth-child(4){font-variant-numeric:tabular-nums}.table-scroll{overflow-x:auto}.tiny{font-size:.76rem}code{padding:2px 5px;background:#edf3fa;border-radius:4px}ul{padding-left:1.4rem}@media(max-width:750px){.hero{grid-template-columns:1fr}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tools{grid-template-columns:1fr 1fr}.metrics{grid-template-columns:1fr 1fr}.card{padding:17px}}@media(max-width:480px){.form-grid,.grid,.tools{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.container{padding:24px 13px 56px}.nav{padding:12px 13px}.nav-links{gap:3px}.nav-links a{padding:6px 8px;font-size:.79rem}h1{font-size:1.83rem}.badge{justify-self:start}}
[hidden]{display:none!important}