:root{color-scheme:light;--ink:#243d32;--muted:#506354;--paper:#faf9f2;--line:#d6ddcb;--green:#295740;--soft:#edf0e3;--gold:#8b5d25}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,"Noto Sans Thai",sans-serif;font-size:17px;line-height:1.75}a{color:var(--green);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}.site-header{border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:24px;padding:20px max(24px,calc((100vw - 1160px)/2));background:#fffefa}.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:23px;text-decoration:none;white-space:nowrap}.brand span{font-weight:400;margin-left:-8px}.site-header nav{display:flex;gap:22px;flex-wrap:wrap;font-size:14px}.skip{position:absolute;left:16px;top:-100px;padding:8px;background:white;z-index:9}.skip:focus{top:8px}main{max-width:1160px;margin:auto;padding:28px 26px 70px}.breadcrumbs{font-size:13px;color:var(--muted);margin:0 0 25px}.breadcrumbs span{padding:0 12px}.hero{padding:25px 0 35px;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.09em;color:var(--gold);margin:0 0 14px}h1{font-size:clamp(1.85rem,3.6vw,2.8rem);line-height:1.4;max-width:960px;letter-spacing:-.025em;margin:0 0 20px}h2{font-size:1.38rem;line-height:1.5;margin:0 0 12px}h3{font-size:1.14rem;line-height:1.6;margin:0 0 14px}p{margin:0 0 16px}.lead{max-width:850px;color:var(--muted);font-size:1.08rem}.meta{font-size:14px;color:var(--muted)}.meta span{padding:0 10px}.actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:24px}.button,button[data-print]{border:1px solid var(--green);background:var(--green);color:white;border-radius:6px;padding:11px 19px;font:inherit;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;min-height:44px}.button:hover,button[data-print]:hover{background:#1d402e}.text-link{font-size:15px;padding:9px 3px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding-top:35px}.lesson-copy section{margin-bottom:36px}.goal{background:var(--soft);border-left:4px solid #76915d;padding:23px 26px;border-radius:0 8px 8px 0}.goal p:last-child{margin:0}.example{padding:25px;border:1px solid var(--line);background:white;border-radius:8px}ol,ul{padding-left:24px;margin:12px 0 0}li{padding-left:5px;margin-bottom:14px}.teacher{align-self:start;border:1px solid var(--line);padding:24px;background:#f0f1e8;border-radius:8px;font-size:14px}.teacher h2{font-size:1rem;margin-top:23px}.teacher h2:first-of-type{margin-top:0}.note{font-size:13px;color:var(--muted)}.worksheet{border:1px solid var(--line);background:white;padding:30px;border-radius:10px;margin:30px 0 20px}.worksheet-actions{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:24px}.worksheet-actions p{margin:12px 0 0;font-size:14px;color:var(--muted)}.student-sheet h2{font-size:1.28rem}.student-name{font-size:14px;line-height:2}.thai-support{font-size:14px;color:var(--muted)}.answer-space{height:70px;background:repeating-linear-gradient(white,white 32px,#dce1d4 33px,white 34px)}.sheet-source{font-size:11px;overflow-wrap:anywhere;color:var(--muted);margin-top:25px}.answer-key{border:1px solid var(--line);padding:18px 22px;border-radius:8px}.answer-key summary{cursor:pointer;font-weight:700}.answer-key p{margin:18px 0 0}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0 40px}.card{background:white;border:1px solid var(--line);border-radius:9px;padding:23px}.card p:last-child{font-size:15px;color:var(--muted);margin:0}.intro{max-width:850px;padding:32px 0}.mission-callout{padding:30px 0}.site-footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);padding:25px max(24px,calc((100vw - 1108px)/2));font-size:13px}.site-footer span{margin-left:auto;color:var(--muted)}section[id]{scroll-margin-top:20px}@media(max-width:900px){.content-grid{grid-template-columns:1fr;gap:5px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.site-header{align-items:flex-start}.site-header nav{gap:12px}.teacher{margin-bottom:20px}}@media(max-width:600px){body{font-size:16px}.site-header{padding:16px 20px;flex-direction:column;gap:12px}.site-header nav{font-size:13px;gap:16px}main{padding:22px 20px 44px}.hero{padding-top:10px}.cards{grid-template-columns:1fr}.worksheet,.example,.goal{padding:20px}.teacher{padding:20px}.student-name{overflow-wrap:anywhere}.site-footer span{margin-left:0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@page{size:A4;margin:16mm}@media print{body{background:white;color:#111;font-size:11pt;line-height:1.5}.site-header,.site-footer,.skip,.breadcrumbs,.hero,.content-grid,.worksheet-actions,.answer-key{display:none!important}main{padding:0;max-width:none}.worksheet{border:0;padding:0;margin:0}.student-sheet h2{font-size:16pt}.student-sheet .eyebrow{color:#333}.answer-space{height:30mm;background:none;border-bottom:1px solid #aaa}.student-sheet li{break-inside:avoid;margin-bottom:6mm}.sheet-source{color:#333;font-size:9pt}.thai-support{color:#333;font-size:10pt}a{color:inherit}}