body { background-attachment:scroll; }
header { flex-wrap:wrap; gap:12px; }
nav {flex-wrap:wrap;}
.layout-two-col {grid-template-columns:250px minmax(0,1fr);gap:24px;}
main {min-width:0;}
.topic-section {padding:28px;}
.callout {display:block;overflow-wrap:anywhere;}
.sidebar-sticky {max-height:calc(100vh - 100px);overflow-y:auto;}
code {white-space:pre-wrap;}
.quiz-question h3,.quiz-question label {white-space:pre-wrap;}
.quiz-question label {font-family:Consolas,'Courier New',monospace;}
h2 {font-size:1.65rem;line-height:1.3;margin-bottom:18px;}
h3 {font-size:1.12rem;margin:20px 0 10px;}
.prose {margin:0;}
.prose p {margin:12px 0;}
.prose li {margin-bottom:8px;}
.code-header {padding:8px 14px;color:#cbd5e1;background:#334155;font-size:.8rem;}
pre {white-space:pre;overflow:auto;padding:14px;font-size:.88rem;line-height:1.6;}
.code-container pre {margin:0;}
.output {background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;margin:10px 0 18px;}
.output b {display:block;padding:7px 14px 0;color:#166534;font-size:.8rem;}
.output pre {color:#14532d;padding-top:4px;}
table {width:100%;border-collapse:collapse;font-size:.91rem;}
td,th {text-align:left;vertical-align:top;padding:10px;border:1px solid #e2e8f0;}
th {background:#eff6ff;}
.table-scroll {overflow-x:auto;margin:14px 0;}
.samples {display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.sample {border:1px solid #e2e8f0;border-radius:8px;min-width:0;overflow:hidden;}
.sample b {display:block;padding:8px 14px;background:#f1f5f9;}
.sample pre {color:#0f172a;background:white;white-space:pre-wrap;overflow-wrap:anywhere;}
.task-meta {font-size:.86rem;color:#475569;margin:10px 0;}
details {margin:14px 0;border:1px solid #cbd5e1;border-radius:8px;padding:12px 16px;}
summary {cursor:pointer;font-weight:600;color:#1d4ed8;}
details p {margin-bottom:0;}
.micro {background:#f8fafc;border:1px solid #cbd5e1;padding:16px;border-radius:8px;margin:20px 0;}
.micro details {background:white;}
.chain {display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:18px 0;}
.chain span {background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;padding:8px 12px;}
.quiz-question {padding:18px 0;border-bottom:1px solid #e2e8f0;}
.quiz-question label {display:block;padding:8px;border-radius:6px;cursor:pointer;}
.quiz-question label:hover {background:#eff6ff;}
.quiz-question input {margin-right:8px;}
.feedback {padding:10px;background:#eff6ff;border-radius:6px;margin-top:10px;}
.success {background:#dcfce7;}
.incorrect {background:#fef3c7;}
.buttons {display:flex;gap:12px;flex-wrap:wrap;margin:20px 0;}
.index-grid {display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.index-grid a {text-decoration:none;}
.index-grid h2 {font-size:1.4rem;}
.muted {color:#64748b;font-size:.88rem;}
.print-only {display:none;}
footer {margin-top:24px;}
@media(max-width:900px){.layout-two-col{grid-template-columns:1fr}.sidebar-sticky{position:static}.topic-section{padding:20px}header{position:static;padding:16px}.logo{font-size:1rem}.page-header{flex-direction:column;align-items:flex-start}h1{font-size:2rem!important}.index-grid{grid-template-columns:1fr}}
@media(max-width:500px){.container{padding:16px 12px}.samples{grid-template-columns:1fr}.topic-section{padding:16px}h2{font-size:1.35rem}nav a{font-size:.8rem!important;padding:6px!important}.logo span{font-size:.9rem}}
@page {size:A4;margin:16mm 15mm 17mm;}
@media print {
body{display:block;background:white;font-family:Arial,sans-serif;color:#111;font-size:10pt;line-height:1.4}
header,aside,footer,.no-print,.buttons{display:none!important}.print-only{display:block}.container{padding:0;max-width:none;display:block}.layout-two-col{display:block}.page-header{display:block;margin:0 0 18px;padding:0;border:0}.page-header h1{font-size:23pt!important}.meta{font-size:9pt}.badge{font-size:8pt}
.topic-section{padding:0 0 15px;margin:0 0 16px;border:0;border-bottom:1px solid #aaa;box-shadow:none;border-radius:0;overflow:visible}
h2{font-size:16pt;margin:12px 0 10px;break-after:avoid}h3{font-size:11pt;break-after:avoid}.prose{font-size:10pt;color:#111}p{orphans:3;widows:3}.prose p{margin:8px 0}
pre{font-size:9pt;line-height:1.4;padding:10px;white-space:pre-wrap;overflow-wrap:anywhere;overflow:visible;color:#111!important;background:#f5f7fa!important}
.code-container{background:#f5f7fa!important;border:1px solid #cbd5e1;break-inside:avoid}.code-header{color:#334155!important;background:#e2e8f0!important;font-size:8pt;padding:6px 10px}.output{break-inside:avoid;margin:6px 0 12px}.output pre{background:#f0fdf4!important}
.table-scroll{overflow:visible}table{font-size:9pt}th,td{padding:6px}tr{break-inside:avoid}thead{display:table-header-group}.callout,.micro,details,.samples{break-inside:avoid;padding:10px;margin:10px 0}.samples{display:grid;grid-template-columns:1fr 1fr}.sample pre{font-size:9pt}.sample b{padding:6px 10px;font-size:9pt}
.example{break-inside:avoid}#main table{font-size:8.2pt}#main td,#main th{padding:4px}
details>summary{display:none}details{border:0;background:#f8fafc}details::before{content:'Подсказка / самопроверка';font-size:9pt;font-weight:bold;color:#475569}.task{break-before:page}.teacher-task{break-before:page}.lesson-break{break-before:page}.quiz-question{break-inside:avoid}.quiz-question label{padding:4px}.feedback{font-size:9pt}.index-grid{display:block}a{color:#1d4ed8;text-decoration:none}a[href^='http']{overflow-wrap:anywhere}
}