:root{color-scheme:light;--navy:#002f54;--navy-deep:#001e36;--ecru:#f9f7ee;--paper:#fffef9;--sand:#e8d1ab;--ink:#172634;--muted:#53626e;--line:rgba(0,47,84,.16);--serif:"Noto Serif JP","Yu Mincho","Hiragino Mincho ProN",serif;--sans:"Noto Sans JP","Yu Gothic UI","Hiragino Sans",sans-serif;--danger:#8e3434}
*{box-sizing:border-box}body{margin:0;background:var(--ecru);color:var(--ink);font:15px/1.8 var(--sans)}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}a{color:var(--navy);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex="-1"]:focus-visible{outline:3px solid #487f9e;outline-offset:3px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.5;color:var(--navy)}h1{font:500 clamp(27px,4.5vw,40px)/1.55 var(--serif);letter-spacing:.025em}h2{font-size:21px;font-weight:600}h3{font-size:18px}img{max-width:100%;object-fit:contain}[hidden]{display:none!important}.shell{max-width:900px;margin:auto;padding:0 20px}.site-header{max-width:1120px;margin:auto;padding:22px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.site-header a{display:flex;align-items:center;min-height:44px}.site-header img{height:auto;width:154px}.site-header>span,.eyebrow{color:var(--navy);font-size:10px;font-weight:700;letter-spacing:.2em}.site-header>span{font-size:9px}.intro{padding:48px 0 36px;max-width:680px}.intro .eyebrow{margin-bottom:16px}.lead{font-size:20px;font-weight:500;margin:22px 0 12px;color:var(--navy)}.intro-copy{color:var(--muted)}.scope-note{font-size:12px;color:var(--muted);margin-top:18px;max-width:620px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:24px 20px}.section-heading{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px}.section-heading p{font-size:13px;color:var(--muted);margin-top:4px}.step{flex:0 0 32px;color:var(--navy);border-top:2px solid var(--sand);padding-top:6px;font-size:12px;font-weight:700;letter-spacing:.1em;margin-top:5px}.form-grid{display:grid;grid-template-columns:1fr;gap:18px 14px}label{display:block;font-size:13px;font-weight:500;color:var(--navy)}input,select{display:block;width:100%;min-width:0;min-height:48px;border:1px solid #a6b0b6;border-radius:7px;background:#fff;color:var(--ink);padding:10px 11px;margin-top:6px;font-size:16px}input::placeholder{color:#727e86}.help{font-size:12px;color:var(--muted);margin-top:10px;min-height:22px}.button{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:48px;padding:12px 18px;border:1px solid var(--navy);border-radius:7px;font-size:14px;font-weight:600;text-decoration:none;line-height:1.5}.primary{background:var(--navy);color:#fff}.primary:hover:not(:disabled){background:var(--navy-deep)}.outline{background:transparent;color:var(--navy)}.outline:hover{background:#eee7d7}#checker-form>.button{margin-top:18px;width:100%}.data-status{font-size:12px;color:var(--muted);margin:-4px 0 18px}.data-status.warning{color:var(--danger)}.result-section{margin-top:48px;scroll-margin-top:20px}.result-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:28px 20px}.result-label{font-size:13px;color:var(--muted)}.result-value{color:var(--navy);line-height:1.2;margin:10px 0 18px;font-variant-numeric:tabular-nums}.result-value strong{font:500 clamp(52px,12vw,76px)/1 var(--serif)}.result-value span{font-size:24px;margin-left:5px}.result-notice{font-size:12px;color:var(--muted);padding-left:13px;border-left:2px solid var(--sand)}.component-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin:24px 0}.component-list>div{background:var(--paper);padding:12px}.component-list dt{font-size:11px;color:var(--muted)}.component-list dd{margin:2px 0 0;color:var(--navy);font-weight:600;overflow-wrap:anywhere}.result-card>.button{width:100%}.result-card--hold{border-left:4px solid var(--sand)}.result-card--hold p{color:var(--muted);font-size:13px;margin-top:10px}.result-card--hold details{margin-top:18px}.details-section{margin-top:38px}details{border-bottom:1px solid var(--line)}summary{cursor:pointer;min-height:52px;padding:16px 4px;color:var(--navy);font-size:14px}.details-body{padding:0 4px 22px;font-size:13px;color:var(--muted)}.details-body p+p{margin-top:12px}.formula{padding:14px;background:#efebdd;font-size:12px;line-height:2;overflow-wrap:anywhere}.next-step{margin:56px 0 40px;border-top:1px solid var(--line);padding-top:32px}.next-step h2{font-family:var(--serif);font-weight:500;margin-top:10px}.next-step p:not(.eyebrow){font-size:13px;color:var(--muted);margin:12px 0 20px}.store-cta{width:100%;min-height:58px;background:var(--navy);color:var(--ecru);border-color:var(--navy);box-shadow:inset 0 0 0 1px rgba(232,209,171,.55),0 5px 14px rgba(0,47,84,.12);font-size:16px}.store-cta:hover{background:var(--navy-deep);color:var(--ecru)}.site-footer{padding:24px;text-align:center;border-top:1px solid var(--line);font-size:12px}.site-footer a{display:inline-block;min-height:44px;padding:10px}.site-footer small{display:block;color:var(--muted);font-size:10px;margin-top:6px}.skip-link{position:absolute;top:-100px;left:12px;background:white;z-index:20;padding:12px}.skip-link:focus{top:12px}.noscript{padding:24px;background:#fff3df}
.component-list>div:last-child:nth-child(odd){grid-column:1/-1}
@media(min-width:640px){.shell{padding:0 32px}.intro{padding:64px 0 42px}.panel{padding:32px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.form-grid .wide{grid-column:1/-1}#checker-form>.button{width:auto;min-width:240px}.result-card{padding:34px 32px}.component-list{grid-template-columns:repeat(5,minmax(0,1fr))}.component-list>div:last-child:nth-child(odd){grid-column:auto}.result-card>.button{width:auto}.store-cta{width:320px;max-width:100%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}