:root{color-scheme:light;--ink:#25223b;--muted:#64627c;--purple:#4a3aff;--line:#dddde9;--wash:#f8f8ff;--soft:#eeeaff;font-family:Tahoma,'Noto Sans Thai',system-ui,sans-serif;font-size:16px;line-height:1.85;color:var(--ink);background:#fff}
*{box-sizing:border-box}body{margin:0}a{color:var(--purple);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid var(--purple);outline-offset:5px;border-radius:3px}::selection{background:#dcd6ff;color:#25223b}
.wrap{max-width:1100px;margin:auto;padding:0 40px}.top{border-bottom:1px solid var(--line)}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;min-height:92px}.brand{color:var(--ink);text-decoration:none;font-size:19px;font-weight:700;letter-spacing:-.02em}.brand small{display:block;font-size:12px;font-weight:400;letter-spacing:0;color:var(--muted)}nav{display:flex;flex-wrap:wrap;gap:24px;font-size:14px}nav a{color:var(--muted);text-decoration:none;display:inline-flex;align-items:center;min-height:44px;padding:6px 0}nav a[aria-current=page]{color:var(--purple);text-decoration:underline}
main{padding:64px 0 88px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(34px,4.5vw,54px);line-height:1.25;letter-spacing:-.03em;margin-bottom:24px;text-wrap:balance}h2{font-size:22px;line-height:1.5;font-weight:600;margin:40px 0 14px}h3{font-size:17px;margin-bottom:12px}.lead{font-size:18px;line-height:1.9;max-width:66ch}.muted{color:var(--muted)}.intro{padding-bottom:40px;border-bottom:1px solid var(--line)}.intro .english{font-size:15px;color:var(--muted);max-width:75ch}.purpose{display:grid;grid-template-columns:1.2fr 1fr;gap:72px;margin:40px 0 54px}.purpose h2{margin-top:0}.facts{margin:0}.facts div{padding:18px 0;border-top:1px solid var(--line)}.facts dt{font-weight:600}.facts dd{margin:5px 0 0;color:var(--muted);font-size:15px}.facts div:first-child{padding-top:0;border-top:0}
.callout{background:var(--wash);padding:28px 32px;border-radius:12px}.callout h2{margin-top:0}.callout p:last-child{margin-bottom:0}.action{display:inline-block;background:var(--purple);color:#fff;padding:12px 22px;border-radius:7px;text-decoration:none;font-size:15px;margin-top:12px}.action:hover{background:#3727e6}.reading{max-width:760px}.reading p,.reading li{font-size:16px}.reading ul{padding-left:24px}.reading li{margin-bottom:10px}.meta{font-size:14px;color:var(--muted);margin-bottom:32px}.toc{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;margin:24px 0 36px;padding-bottom:24px;border-bottom:1px solid var(--line)}footer{border-top:1px solid var(--line);background:var(--wash);padding:32px 0}footer .wrap{display:flex;justify-content:space-between;gap:24px;font-size:13px;color:var(--muted)}footer p{margin:0}footer a{color:var(--muted)}.footer-links{display:flex;flex-wrap:wrap;gap:20px}.footer-links a{display:inline-flex;align-items:center;min-height:44px}.skip{position:absolute;left:16px;top:-80px;background:#fff;padding:10px;z-index:2}.skip:focus{top:12px}
@media(max-width:680px){.wrap{padding:0 22px}.top .wrap{align-items:flex-start;flex-direction:column;gap:15px;padding-top:22px;padding-bottom:20px;min-height:0}nav{gap:12px 20px;font-size:13px}main{padding:40px 0 56px}.lead{font-size:17px}.purpose{grid-template-columns:1fr;gap:32px;margin:32px 0}.callout{padding:22px}footer .wrap{flex-direction:column;gap:14px}h2{margin-top:32px}h1{overflow-wrap:anywhere}.reading p,.reading li{font-size:15px}.reading a{overflow-wrap:anywhere}}