:root{color-scheme:light;--navy:#14253f;--yellow:#f1d371;--muted:#506279;--line:#d9dfe4;--paper:#fff;--canvas:#eef1ed}
*{box-sizing:border-box}
html{scroll-behavior:auto;scroll-padding-top:24px}
body{margin:0;background:var(--canvas);color:var(--navy);font-family:"Segoe UI",Arial,sans-serif;font-size:17px;line-height:1.6}
a{color:inherit;text-underline-offset:4px}
a:focus-visible,[tabindex]:focus-visible{outline:3px solid #956d00;outline-offset:5px}
.site-header{background:var(--navy);color:#fff}
.site-header nav{display:flex;justify-content:space-between;gap:24px;max-width:1200px;margin:auto;padding:20px 32px;font-size:15px}
.site-header a{color:var(--yellow)}
main{max-width:1200px;margin:40px auto 64px;padding:0 24px}
section{margin:0 0 28px;scroll-margin-top:24px}
.intro{padding:42px;background:var(--navy);color:#fff;border-radius:28px}
.eyebrow{display:block;color:#856406;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.intro>.eyebrow{color:var(--yellow)}
h1{max-width:900px;margin:14px 0 18px;font-family:Georgia,"Times New Roman",serif;font-size:clamp(32px,4.3vw,54px);font-weight:400;line-height:1.15}
h2{margin:0 0 16px;font-size:25px;line-height:1.3}
p{max-width:88ch;margin:0 0 16px}
p:last-child{margin-bottom:0}
.intro>p{max-width:62ch;color:#dbe3ed;font-size:19px}
.summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}
.summary-card{display:flex;flex-direction:column;gap:8px;padding:22px 24px;background:var(--yellow);color:var(--navy);border-radius:18px;text-decoration:none}
.summary-card strong{font-size:clamp(28px,3vw,38px);line-height:1.3;font-variant-numeric:tabular-nums}
.summary-card span{font-size:14px}
.summary-card span:last-child{opacity:.85}
.notice{padding:28px 32px;background:#fff8df;border:1px solid #ead596;border-left:5px solid #d3aa36;border-radius:18px}
.notice h2{font-size:23px}
.method,.sample{padding:32px;background:var(--paper);border:1px solid var(--line);border-radius:22px}
.method li{margin-bottom:9px;padding-left:4px}
.method ol,.method ul{max-width:88ch;margin:0 0 18px;padding-left:24px}
.formula{max-width:100%;overflow:auto;margin:22px 0;padding:20px;background:#f3f5f6;border-radius:12px;white-space:nowrap}
.formula code{font-family:Consolas,"Courier New",monospace;font-size:16px}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:24px}
.section-heading h2{margin:5px 0 0;font-family:Georgia,"Times New Roman",serif;font-size:32px;font-weight:400}
.sample-total{max-width:280px;margin:0;text-align:right;color:var(--muted);font-size:15px}
.sample-total strong{display:block;color:var(--navy);font-size:22px;white-space:nowrap}
.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;min-width:1000px;border-collapse:collapse;font-size:14px;line-height:1.5}
caption{padding:14px 18px;text-align:left;color:var(--muted);background:#f8faf9}
th,td{padding:16px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:var(--navy);color:#fff;font-size:13px;white-space:nowrap}
tbody th{min-width:260px;font-weight:500}
tbody tr:last-child>*{border-bottom:0}
tbody tr:nth-child(even){background:#f7f9f8}
.number{white-space:nowrap;font-variant-numeric:tabular-nums}
.record-id,.access,.evidence{display:block;margin-top:6px;color:var(--muted);font-size:12px}
.evidence{max-width:340px}
.return-link{display:inline-block;padding:13px 24px;background:var(--yellow);color:var(--navy);border-radius:12px;font-weight:600;text-decoration:none}
footer{padding:2px 0 20px}
@media(max-width:700px){
body{font-size:16px}
.site-header nav{flex-wrap:wrap;gap:12px;padding:17px 20px}
main{margin:24px auto 32px;padding:0 16px}
.intro{padding:26px 22px;border-radius:22px}
h1{font-size:34px}
.intro>p{font-size:17px}
.summary-grid{grid-template-columns:1fr;gap:14px;margin-top:24px}
.summary-card{padding:20px}
.method,.sample,.notice{padding:24px 20px}
.section-heading{display:block}
.section-heading h2{font-size:29px}
.sample-total{margin-top:12px;max-width:none;text-align:left}
.sample-total strong{display:inline;font-size:19px}
.formula{padding:15px}
.formula code{font-size:14px}
}
@media print{
body{background:#fff}
.site-header,.return-link{display:none}
main{max-width:none;margin:0;padding:0}
section{break-inside:avoid}
.sample{break-inside:auto;padding:16px 0;border:0}
.intro{background:#fff;color:#14253f;border:1px solid #d9dfe4}
.intro>p,.intro>.eyebrow{color:#14253f}
.table-scroll{overflow:visible}
table{min-width:0;font-size:10px}
th,td{padding:7px}
tbody th{min-width:0}
.evidence{display:none}
}