:root{--ink:#153b40;--teal:#147a72;--mint:#eaf5f0;--muted:#59706c;--line:#dce8e3}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#f7faf8;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",sans-serif;line-height:1.85}a{color:#116e66}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #f4b544;outline-offset:4px}.db-header{position:relative;background:white;border-bottom:1px solid var(--line)}.db-nav{max-width:1200px;margin:auto;padding:21px 28px;display:flex;align-items:center;justify-content:space-between;gap:28px}.db-brand{font-size:18px;font-weight:800;line-height:1.5;text-decoration:none;color:var(--ink)}.db-brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.12em;color:var(--muted);margin-top:5px}.db-nav nav{display:flex;gap:25px;flex-wrap:wrap}.db-nav nav a{font-size:13px;font-weight:700;text-decoration:none;color:var(--ink)}.db-main{max-width:1160px;margin:auto;padding:0 28px 70px}.db-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:55px;padding:60px 0 44px;align-items:center}.db-kicker{letter-spacing:.17em;font-size:12px;font-weight:700;color:var(--teal);margin:0 0 18px}.db-main h1{font-size:clamp(28px,3.7vw,44px);line-height:1.45;letter-spacing:.01em;margin:0 0 24px}.db-main h2{font-size:25px;line-height:1.5;margin:0 0 16px;border:0;background:none;padding:0}.db-main h3{font-size:18px;line-height:1.7;margin:0 0 12px}.db-intro{font-size:15px;color:var(--muted);max-width:620px}.db-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 16px}.db-button{display:inline-block;background:var(--teal);color:white;text-decoration:none;padding:12px 24px;border-radius:6px;font-weight:700;font-size:14px}.db-button.secondary{background:white;border:1px solid var(--line);color:var(--ink)}.db-note{font-size:12px;color:var(--muted);line-height:1.8}.db-panel{background:white;border:1px solid var(--line);border-radius:14px;padding:30px;box-shadow:0 12px 40px #173e3510}.db-panel h2{font-size:18px}.db-feature{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:0 0 55px}.db-stat{background:var(--mint);border:1px solid var(--line);padding:24px;border-radius:10px}.db-stat .value{font-size:48px;font-weight:800;line-height:1.3;letter-spacing:-.04em}.db-stat .value small{font-size:22px;margin-left:3px}.db-stat p{margin:6px 0;font-size:14px}.db-stat a{font-size:12px}.db-section{margin:48px 0}.db-section-lead{font-size:14px;color:var(--muted);margin-bottom:24px}.db-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.db-topic{display:block;border:1px solid var(--line);background:white;border-radius:9px;padding:24px;text-decoration:none;color:var(--ink)}.db-topic span{font-size:11px;color:var(--teal);font-weight:700}.db-topic strong{display:block;font-size:18px;margin:8px 0}.db-topic p{font-size:13px;color:var(--muted);margin:0}.db-band{display:flex;align-items:center;justify-content:space-between;gap:28px;border-radius:12px;background:#173d40;color:white;padding:32px;margin:44px 0}.db-band h2{color:white;font-size:21px}.db-band p{font-size:14px;margin:0;color:#d0e2dd}.db-band a{flex-shrink:0;background:white;color:var(--ink)}.db-two{display:grid;grid-template-columns:1fr 1fr;gap:24px}.db-bars{list-style:none;padding:0;margin:16px 0}.db-bars li{margin:15px 0}.db-bar-label{display:flex;justify-content:space-between;align-items:baseline;gap:20px;font-size:13px;margin-bottom:7px}.db-bar-label strong{white-space:nowrap;font-size:16px}.db-track{height:9px;border-radius:20px;background:#edf2ef;overflow:hidden}.db-fill{display:block;height:100%;border-radius:20px;background:var(--teal)}.db-breadcrumb{font-size:12px;color:var(--muted);padding:24px 0}.db-page-title{padding:20px 0 22px}.db-controls{background:white;border:1px solid var(--line);border-radius:12px;padding:22px;margin:20px 0 30px;display:flex;gap:20px;flex-wrap:wrap;align-items:end}.db-controls label{display:grid;gap:7px;font-size:13px;font-weight:700;flex:1;min-width:180px}.db-controls input,.db-controls select{width:100%;background:#fff;color:var(--ink);padding:11px;border:1px solid #aabeb7;border-radius:5px;font:inherit}.db-controls button{background:var(--teal);color:white;border:0;padding:12px 20px;border-radius:5px;cursor:pointer;font:inherit}.db-results{font-size:13px;color:var(--muted)}.db-question{background:white;border:1px solid var(--line);border-radius:12px;padding:28px;margin:25px 0;scroll-margin-top:24px}.db-question h2{font-size:21px}.db-table-wrap{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:6px}.db-table{width:100%;min-width:600px;border-collapse:collapse;background:white;font-size:13px;margin:0}.db-table th,.db-table td{padding:12px 14px;border:0;border-bottom:1px solid var(--line);text-align:right;white-space:normal}.db-table th:first-child,.db-table td:first-child{text-align:left;width:49%}.db-table thead{background:#eef5f1}.db-table tr:last-child td{border-bottom:0}.db-table caption{text-align:left;padding:12px;font-size:12px;color:var(--muted)}.db-meta{display:grid;grid-template-columns:140px 1fr;margin:0;font-size:14px}.db-meta dt,.db-meta dd{padding:13px 0;border-bottom:1px solid var(--line);margin:0}.db-meta dt{font-weight:700}.db-meta dd{padding-left:15px}.db-toc{display:flex;gap:10px;flex-wrap:wrap}.db-toc a{background:#edf5f0;padding:7px 12px;border-radius:5px;text-decoration:none;font-size:13px}.db-question[hidden]{display:none}.db-disclaimer{border-left:3px solid var(--teal);padding:12px 20px;background:#edf5f0;font-size:13px}.db-main details{padding:18px;background:white;border:1px solid var(--line);border-radius:8px;margin:12px 0}.db-main summary{cursor:pointer;font-weight:700}.db-main details p{font-size:14px}.db-main p{overflow-wrap:anywhere}footer{margin-top:0}
@media(max-width:850px){.db-nav{align-items:flex-start;flex-direction:column;gap:15px}.db-hero{gap:24px}.db-grid{grid-template-columns:repeat(2,1fr)}.db-two{grid-template-columns:1fr}.db-main h1{font-size:33px}}
@media(max-width:600px){.db-nav{padding:17px 18px}.db-brand{font-size:15px}.db-nav nav{gap:17px}.db-nav nav a{font-size:12px}.db-main{padding:0 18px 40px}.db-hero{grid-template-columns:1fr;padding:35px 0;gap:28px}.db-main h1{font-size:29px}.db-panel{padding:23px}.db-feature{grid-template-columns:1fr;gap:12px;margin-bottom:35px}.db-stat{padding:19px 24px}.db-stat .value{font-size:40px}.db-grid{grid-template-columns:1fr}.db-band{padding:25px;display:block}.db-band a{margin-top:20px}.db-section{margin:36px 0}.db-question{padding:20px 16px}.db-question h2{font-size:18px}.db-main h2{font-size:22px}.db-meta{grid-template-columns:100px 1fr;font-size:13px}.db-controls{padding:17px}.db-actions{gap:10px}.db-button{padding:11px 17px}.db-bar-label{font-size:12px;gap:10px}}