:root{--ink:#061733;--muted:#4a607d;--mint:#75b4ff;--line:#d8e7f7;--bg:#edf5ff;--blue:#075ee8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,Arial,sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button,.button{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:12px;padding:12px 20px;font:inherit;font-weight:600;cursor:pointer}button:hover,.button:hover{background:#004cc4;text-decoration:none}button:disabled{opacity:.5;cursor:wait}.top{display:flex;align-items:center;gap:24px;padding:20px 36px;background:#fff;border-bottom:1px solid var(--line)}.top span{margin-left:auto}.brand{font-weight:850;font-size:26px;letter-spacing:-1px}.brand small{display:block;font-size:12px;font-weight:500;letter-spacing:0;color:var(--muted)}.layout{display:grid;grid-template-columns:240px minmax(0,1fr);max-width:1600px;margin:auto}aside{padding:28px 16px}nav{display:grid;gap:4px}nav a{padding:12px 16px;border-radius:12px}nav a.active{background:var(--blue);color:white}main{padding:32px;max-width:1200px;min-width:0}body>main{margin:40px auto}.hero{background:var(--ink);color:white;border-radius:24px;padding:36px;margin-bottom:28px}.hero h1{font-size:clamp(26px,3vw,42px);line-height:1.15;margin:14px 0 20px}.hero small{color:var(--mint);letter-spacing:2px}.hero .button{background:var(--blue);color:#fff;margin-top:20px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:20px}article{background:white;border:1px solid var(--line);border-radius:18px;padding:24px;margin-bottom:16px}h1,h2,h3{line-height:1.25}h2{font-size:23px}small{display:block;color:var(--muted)}.price{font-size:36px;font-weight:800}.badge{display:inline-block;background:#e3efff;padding:5px 12px;border-radius:20px;font-size:13px}.access{padding:18px;margin-top:24px;border-top:1px solid var(--line)}.access b{display:block}progress{display:block;width:100%;height:9px;border:none;border-radius:10px;overflow:hidden;accent-color:var(--mint);margin:18px 0}progress::-webkit-progress-bar{background:#d9e2e6}progress::-webkit-progress-value{background:var(--mint)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}video{width:100%;max-height:65vh;background:#000;border-radius:16px}.video-tools,.tabs,.next-lesson{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:18px 0}.video-tools label{display:flex;gap:8px}.video-tools button,.tabs button,.jump{font-size:14px;padding:8px 12px}.next-lesson{justify-content:space-between;border-top:1px solid var(--line);padding-top:20px}.lesson-list{background:white;border:1px solid var(--line);border-radius:18px;padding:16px;align-self:start}.lesson-list a{display:flex;gap:10px;padding:12px;border-radius:10px}.lesson-list a.current{background:#e3efff}.resource{display:flex;align-items:center;gap:20px;padding:18px}.resource div,.resource strong{flex:1}.resource a{font-size:14px;color:#075ee8}label{display:block;margin:14px 0}input:not([type=checkbox]),textarea,select{display:block;width:100%;padding:12px;border:1px solid #c0d5ed;border-radius:10px;background:white;color:var(--ink);font:inherit}input[type=checkbox]{width:auto}textarea{resize:vertical}select{width:auto}.notice{padding:16px;background:#fff0cd;border-radius:12px}.chatOutput{white-space:pre-wrap;background:white;padding:20px;border-radius:12px;margin-top:16px}.auth{max-width:520px;background:white;border-radius:24px;padding:32px}.search{margin-top:36px;border-top:1px solid var(--line)}#searchResults a{display:block;background:white;border-bottom:1px solid var(--line);padding:12px}.error{color:#a22424}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;background:#fff}td,th{text-align:left;border-bottom:1px solid var(--line);padding:10px}form.inline{display:inline-block}details{margin:14px 0}summary{cursor:pointer;font-weight:700}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #075ee8;outline-offset:3px}[hidden]{display:none!important}@media(max-width:1000px){.lesson-layout{grid-template-columns:1fr}.lesson-list{order:2}.layout{grid-template-columns:200px minmax(0,1fr)}main{padding:24px}}@media(max-width:700px){.top{padding:14px 18px;gap:12px}.top span{font-size:12px}.brand{font-size:22px}.layout{display:block}aside{padding:12px;border-bottom:1px solid var(--line)}nav{display:flex;overflow:auto;gap:8px}nav a{white-space:nowrap;font-size:14px;padding:8px 12px}.access{margin:8px 0 0;padding:8px;font-size:13px}.access small,.access b{display:inline;margin-right:8px}main{padding:18px}.hero{padding:24px}.resource{flex-wrap:wrap}.admin-grid{grid-template-columns:1fr}.top .brand small{display:none}.top a:last-child{font-size:13px}}

.top{flex-wrap:wrap}article,details,.resource{overflow-wrap:anywhere}button:disabled{cursor:default}form.videoUpload{background:#edf5ff;padding:16px;border-radius:12px}