:root{--ink:#17394a;--muted:#687c82;--teal:#17685f;--gold:#c29b48;--line:#dce4df;--paper:#f7f6f0;--soft:#eaf2eb}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:1px solid #cbd8d1;background:white;color:var(--ink);border-radius:8px;padding:9px 14px}button:hover{background:#eef3e9}button:disabled{opacity:.5;cursor:default}.primary{background:var(--teal);color:white;border-color:var(--teal)}.primary:hover{background:#10554e}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #c29b48;outline-offset:3px}header{background:#fff;border-bottom:1px solid var(--line);padding:18px max(24px,calc((100vw - 1240px)/2));display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{font:700 23px Georgia}.brand span{color:var(--gold)}.overline{font-size:11px;letter-spacing:2px;text-transform:uppercase;font-weight:700;color:var(--muted)}.header-note{font-size:12px;color:var(--muted)}nav{position:sticky;top:0;background:#fffef9f5;backdrop-filter:blur(10px);z-index:5;border-bottom:1px solid var(--line);padding:12px max(24px,calc((100vw - 1240px)/2));display:flex;gap:9px;overflow:auto}nav button{white-space:nowrap;font-size:13px;border-color:transparent}nav .active{background:var(--ink);color:white}main{max-width:1240px;margin:auto;padding:30px 24px 70px}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:35px;align-items:center;margin-bottom:28px}.hero h1{font:52px/1.08 Georgia;margin:10px 0 18px;letter-spacing:-1px}.hero p{max-width:580px;color:var(--muted)}.hero-img{height:330px;width:100%;object-fit:cover;object-position:50% 100%;border-radius:16px}.badge{display:inline-block;border-radius:30px;font-size:11px;padding:4px 11px;background:#e5eddf;color:#547052;margin:3px}.grid{display:grid;grid-template-columns:1.1fr 1fr;gap:22px}.card{background:white;border:1px solid var(--line);border-radius:13px;padding:25px;margin:18px 0}.card>h2:first-child,.card>h3:first-child{margin-top:0}h2{font-size:25px;margin:0 0 15px}h3{font-size:18px;margin:18px 0 9px}p{margin:8px 0 16px}small,.muted{color:var(--muted)}.callout{background:#edf2e4;border-left:4px solid var(--gold);padding:14px 18px;border-radius:0 8px 8px 0;margin:18px 0;font-size:14px}.stephead{display:flex;align-items:center;justify-content:space-between;gap:15px}.time{font-size:12px;border:1px solid var(--line);border-radius:30px;padding:4px 12px;white-space:nowrap}.stepnum{font:26px Georgia;color:var(--gold);margin-right:12px}.buttons{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin:12px 0}.buttons .small{font-size:12px;padding:6px 10px}.photo{width:100%;max-height:450px;object-fit:contain;background:#f1f0e9;border-radius:9px}.caption{font-size:12px;color:var(--muted)}textarea,input[type=text]{display:block;width:100%;background:#fafbf7;border:1px solid #cad7cf;border-radius:8px;color:var(--ink);padding:11px 13px;margin:8px 0 15px}textarea{min-height:90px;resize:vertical}label{font-size:14px;display:block}details{margin:12px 0;border:1px solid #e2e7df;border-radius:9px;padding:13px 16px}summary{cursor:pointer;font-weight:600;font-size:14px}details[open]>summary{margin-bottom:12px}audio{width:100%;height:40px;margin:9px 0}figure{margin:0}figure button{display:block;width:100%;border:0;background:none;padding:0}.text{font:21px/1.9 Georgia,serif}.text mark{background:#fff0cf;color:#a24435;font-weight:700;border-radius:3px}.sentence{display:block;border:1px solid transparent;text-align:left;width:100%;font:20px/1.9 Georgia;margin:4px 0;padding:10px 12px}.sentence.selected{border-color:#9eb68b;background:#eff5e7}.ribbon{display:flex;gap:8px;overflow:auto;margin:15px 0}.ribbon button{min-width:46px}.ribbon .active{background:var(--teal);color:white}.diagram{display:grid;grid-template-columns:1fr 1fr;gap:10px}.diagram div{border:1px solid #dfe7db;border-top:3px solid #7c9e80;background:#f7faf3;padding:13px;border-radius:6px}.diagram b{display:block;font-family:Georgia}.diagram small{display:block;margin-top:7px}.mapnode{padding:15px 20px;background:#edf3e7;border-left:4px solid var(--teal);border-radius:5px;margin:10px 0}.mapnode small{display:block}.maparrow{text-align:center;color:#9d9e76;font-size:21px}.q{border:1px solid var(--line);border-radius:10px;padding:19px;margin:15px 0;background:#fff}.q h3{margin:5px 0 12px}.option{display:block;width:100%;text-align:left;margin:7px 0}.option.chosen{border-color:var(--teal);background:#e9f2eb}.result{border-left:3px solid var(--teal);padding:12px 16px;background:#f0f6eb;margin:15px 0;font-size:14px}.result.wrong{border-color:#c29b48;background:#faf3e5}.word-title{font:42px Georgia;margin:8px 0}.wordnet{display:flex;flex-wrap:wrap;gap:7px}.wordnet button{font-size:13px}.wordnet .active{background:var(--ink);color:white}.split{border-top:1px solid var(--line);margin:18px 0;padding-top:15px}.progressbar{height:6px;background:#e1e8de;border-radius:4px;overflow:hidden}.progressbar span{display:block;background:var(--teal);height:100%}table{width:100%;border-collapse:collapse;font-size:13px}td,th{padding:10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.overflow{overflow:auto}.check{display:flex;align-items:flex-start;gap:10px;padding:5px 0}.check input{margin-top:7px}.status{font-size:12px;color:var(--teal)}#toast{display:none;position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:13px 20px;border-radius:10px;z-index:20;max-width:90vw}dialog{max-width:95vw;max-height:95vh;border:0;border-radius:12px;padding:15px;background:#f7f6f0}dialog::backdrop{background:#10232ad9}dialog img{max-width:100%;display:block;margin:auto}dialog button{position:sticky;top:0;float:right;z-index:2}footer{font-size:12px;color:var(--muted);margin-top:25px}.hide{display:none!important}.tablelinks a{color:var(--teal)}@media(max-width:850px){.hero{grid-template-columns:1fr}.hero h1{font-size:40px}.hero-img{height:260px}.grid{grid-template-columns:1fr}.header-note{display:none}.diagram{grid-template-columns:1fr}}@media(max-width:500px){main{padding:22px 15px}.card{padding:18px}.hero h1{font-size:34px}nav{padding:10px 12px}.text,.sentence{font-size:18px}.stephead{align-items:flex-start}.brand{font-size:20px}.word-title{font-size:35px}}@media print{nav,header,button,audio,textarea,footer{display:none!important}.card{break-inside:avoid}body{background:white}.grid{display:block}main{padding:0}details{display:block}}

/* Child-friendly reading trail */
:root{--ink:#203858;--muted:#52677e;--teal:#2265bb;--gold:#e39126;--line:#cddff0;--paper:#f0f7ff;--soft:#e5f2ff}
body{font-size:18px;background:radial-gradient(circle at 95% 5%,#ffedbd 0,transparent 23%),#f0f7ff}header{border-bottom:0}.brand{font:800 25px/1.3 ui-rounded,'Arial Rounded MT Bold',sans-serif;color:#235da2}main{max-width:1080px}button{min-height:48px;border-radius:15px;border:2px solid #d0e0ef;font-weight:650;padding:10px 18px;box-shadow:0 3px 0 #dbe6f0}button:hover{background:#e9f4ff;transform:translateY(-1px)}button:active{transform:translateY(1px);box-shadow:none}.primary,.primary:hover{background:#2265bb;color:white;border-color:#2265bb}nav{background:#ffffffed}nav button{font-size:15px}nav .active{background:#2265bb}.hero h1,h1{font-family:ui-rounded,'Arial Rounded MT Bold',sans-serif!important;font-weight:800!important}.hero h1{font-size:47px}.hero{gap:22px}.hero-img{height:240px;border:6px solid white;box-shadow:0 8px 24px #2c589518}.badge{font-size:13px;background:#fff1cd;color:#725311}.card{border-radius:24px;border:2px solid #d7e6f4;box-shadow:0 8px 0 #dce9f5;padding:28px}.card[hidden],.q[hidden],[hidden]{display:none!important}h2{font-size:27px}.stepnum{background:#fff0b9;color:#74510b;border-radius:12px;padding:3px 10px;font:800 22px sans-serif}.time{font-size:14px;background:#ecf5ff}.caption,summary,label,.result,.callout{font-size:16px}.text,.sentence{font-family:Georgia,serif;font-size:22px;line-height:1.9}.callout{background:#fff7dc;border-radius:14px;border-left:5px solid #eab344}details{border-radius:16px;border:2px solid #dfebf5;background:#fbfdff}summary{min-height:32px}audio{height:48px}textarea,input[type=text]{background:#f6faff;border:2px solid #cbdff3;font-size:18px;border-radius:15px}textarea{min-height:100px}.grid{gap:24px}.option{padding:15px}.option.chosen{background:#e5f1ff;border-color:#2265bb}.word-title{font:800 44px ui-rounded,sans-serif}.wordnet button{font-size:16px}.mapnode{background:#eef5ff;border-radius:14px}.buttons .small{font-size:16px;padding:10px 14px}.check input{width:23px;height:23px;flex-shrink:0}.mission-trail{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 24px;background:#fff;border:2px solid #d7e6f4;border-radius:22px;padding:17px 20px}.trail-title{display:flex;gap:13px;align-items:center}.trail-title small{display:block;font-size:14px}.buddy{display:grid;place-items:center;background:#fff1c7;width:57px;height:57px;border-radius:50%;font-size:34px}.trail-dots{display:flex;gap:8px}.trail-dots button{width:45px;min-height:45px;padding:5px;border-radius:50%;font-size:16px}.trail-dots .current{background:#2265bb;color:#fff;border-color:#2265bb}.mission-controls,.question-controls{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px 0}.mission-controls span{font-size:14px;color:var(--muted)}.q{border-radius:18px}footer{font-size:12px}.photo{max-height:380px}.hero .badge:last-child{display:none}
@media(max-width:760px){.mission-trail{flex-direction:column;align-items:flex-start}.hero h1{font-size:38px}.mission-controls span{display:none}main{padding:20px 14px}.card{padding:20px}.grid{grid-template-columns:1fr}.stephead h2{font-size:23px}.brand{font-size:21px}header{padding:16px}.trail-dots{gap:7px}.trail-dots button{width:39px;min-height:43px}.hero-img{height:200px}nav button{font-size:14px}h1{font-size:30px!important}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}button:hover{transform:none}}

.teacher-script{background:#f4f9ff;font-size:17px}.thinking-time{padding:10px 14px;border-radius:12px;background:#fff1be;color:#654b0a;font-size:15px;margin:10px 0}