:root{--ink:#20384a;--gold:#a4763b;--paper:#faf7f0;--line:#ded4c4;--muted:#6b726e}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.65 Georgia,'Times New Roman',serif}header{background:#eaddc7;border-bottom:1px solid var(--line)}header img{display:block;width:100%;height:auto}a{color:inherit}header .email{display:block;text-align:center;font:15px/2.2 system-ui;background:#f1e7d6}.layout{display:grid;grid-template-columns:260px minmax(0,1fr);max-width:1600px;margin:auto}aside{position:sticky;top:0;align-self:start;height:100vh;overflow:auto;border-right:1px solid var(--line);padding:32px 22px;font:14px/1.5 system-ui}.brand{text-decoration:none;font:27px/1.05 Georgia;display:block;letter-spacing:1px;margin-bottom:30px}.brand span{font:10px/2 system-ui;display:block;color:var(--gold);letter-spacing:1.2px}nav a{display:block;text-decoration:none;padding:9px 12px;border-left:2px solid transparent;margin:3px 0}nav a:hover,nav a.active{background:#eee5d6;border-color:var(--gold)}main{min-width:0;padding:45px clamp(20px,5vw,82px);max-width:1220px}h1{font-size:clamp(38px,5vw,70px);font-weight:400;line-height:1.08;margin:15px 0 24px}h2{font-size:34px;font-weight:400;line-height:1.25}h3{font-size:24px;font-weight:400}.eyebrow{font:12px system-ui;color:var(--gold);letter-spacing:2px;text-transform:uppercase}.lead{font-size:23px;max-width:780px;color:#586669}.hero{width:100%;aspect-ratio:16/8;object-fit:cover;margin:24px 0;border-radius:3px}.chips{display:flex;gap:10px;flex-wrap:wrap}.chip{font:12px system-ui;border:1px solid var(--line);padding:7px 12px;border-radius:20px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card,.example,.exercise,.panel{background:#fffdf8;border:1px solid var(--line);padding:24px;margin:18px 0;border-radius:4px}.card{text-decoration:none;margin:0}.card:hover{border-color:var(--gold)}.fr{font-size:23px;color:#203e50;margin:0 0 8px}.ru{font-size:18px;color:#59645c;margin:0 0 12px}.note{font:14px/1.6 system-ui;color:#7a6b57;border-top:1px solid #ece4d9;padding-top:12px}figure{margin:30px 0}figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:4px}figcaption{padding:14px 0}.gallery img{aspect-ratio:16/9}.gallery figcaption{font-size:16px}button,select,input,textarea{font:16px/1.4 system-ui}button{background:var(--ink);color:white;border:1px solid var(--ink);padding:10px 18px;border-radius:3px;cursor:pointer;margin:6px 7px 6px 0}button.secondary{background:transparent;color:var(--ink)}button:hover{filter:brightness(1.15)}input,textarea,select{width:100%;padding:12px;border:1px solid #c7bdac;background:white;color:var(--ink);border-radius:3px;margin:10px 0}textarea{min-height:85px}label{display:block}.feedback{font:16px/1.6 system-ui;padding:12px;border-left:3px solid var(--gold);background:#f4edde}.feedback:empty{display:none}.correct{border-color:#448261;background:#edf4ec}.wrong{border-color:#b56d4b}.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.toolbar select{width:auto}progress{width:100%;accent-color:var(--gold)}.progress{margin:30px 0}.progress button{font-size:11px;padding:6px}.flash{cursor:pointer;min-height:150px;width:100%;background:#fffdf8;color:var(--ink);text-align:left;border-color:var(--line)}.flash small{display:block;color:var(--gold)}.schema{display:flex;gap:10px;flex-wrap:wrap}.schema span{padding:12px 18px;background:#e9eee9;border-bottom:3px solid #6d8d7f}.schema span:nth-child(2){background:#f4ead8;border-color:#b99554}.schema span:nth-child(3){background:#e5e9ee;border-color:#657d9c}table{border-collapse:collapse;width:100%;font-size:17px}td,th{text-align:left;padding:14px;border:1px solid var(--line)}th{background:#eee5d6}details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer}.next{display:flex;justify-content:space-between;margin-top:45px}.score{font-size:42px;color:var(--gold)}footer{text-align:center;padding:25px;font:12px system-ui;border-top:1px solid var(--line)}@media(max-width:850px){.layout{display:block}aside{position:relative;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:20px}.brand{font-size:23px;margin-bottom:16px}.brand br{display:none}nav{display:flex;gap:6px;overflow:auto}nav a{white-space:nowrap;font-size:12px;padding:8px}.progress{margin:12px 0}.progress progress{max-width:200px;display:block}aside small{display:none}main{padding:28px 20px}.grid{grid-template-columns:1fr}.lead{font-size:20px}.fr{font-size:21px}h2{font-size:29px}header .email{font-size:12px}.example,.exercise{padding:18px}table{font-size:14px}}
header{position:relative}header .email{position:absolute;left:33%;bottom:7%;width:38%;height:11%;background:transparent;color:transparent;font-size:0}header .email:focus-visible{outline:3px solid var(--gold)}