*{box-sizing:border-box}body{margin:0;background:#f7f9fa;color:#1b2b30;font:16px/1.6 system-ui,sans-serif}header{background:#163b35;color:#f3f5e9;padding:55px max(6vw,24px) 45px}header>span{font-size:12px;letter-spacing:2px}h1{font-size:clamp(38px,6vw,72px);line-height:1.06;letter-spacing:-2px;margin:24px 0}.dot{color:#dcf57a}.tags{color:#dcf57a;font-size:14px}main{max-width:1200px;margin:auto;padding:28px 24px}section,details{background:white;border:1px solid #cfd8db;border-radius:14px;padding:28px;margin-bottom:20px}h2{font-size:22px;margin:0 0 18px}h3{font-size:16px}label{display:block;font-size:14px;font-weight:600}input,select,textarea{display:block;width:100%;border:1px solid #b7c8cf;border-radius:7px;padding:11px;font:inherit;color:inherit;background:#fff;margin:6px 0 14px}textarea{min-height:90px;resize:vertical}.identity{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px}.muted,footer{color:#6a7c83;font-size:13px}button,.file{background:#0d6a74;color:white;border:0;border-radius:7px;padding:12px 18px;font:600 14px system-ui;cursor:pointer;display:inline-block}button:disabled{opacity:.5;cursor:default}.secondary,.file{background:#edf3f4;color:#12343b}.actions{display:flex;gap:12px}.file input{display:none}.scroll{overflow:auto}table{border-collapse:collapse;width:100%;min-width:860px}th{text-align:left;font-size:12px;color:#6a7c83}td,th{padding:12px 8px;border-bottom:1px solid #dce3e6}td input{min-width:130px;margin:0}td input[type=number]{min-width:65px;width:80px}td:last-child{font-size:12px;min-width:180px}#check{margin-top:20px}#feedback,#effect{margin:18px 0;padding:12px;background:#edf5f6;border-radius:8px}#feedback:empty,#effect:empty{display:none}.track{height:30px;background:#f1f4f5;margin:6px 0;position:relative;border-radius:4px;overflow:hidden}.bar{height:100%;background:#62a6ae;position:absolute;font-size:12px;white-space:nowrap;padding-left:5px}.track:nth-child(2n) .bar{background:#a1c8ce}summary{cursor:pointer;font-weight:600}.finish{border-color:#0d6a74}footer{text-align:center;padding:15px 0 35px}#experiment>label{margin-top:15px}@media(max-width:650px){.identity{grid-template-columns:1fr}section,details{padding:20px}main{padding:18px 12px}.actions{flex-wrap:wrap}}

.os-guides{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:20px}.os-guides article{background:#f7f9fa;border:1px solid #cfd8db;border-radius:10px;padding:20px}.os-guides h3{font-size:20px;margin:0 0 16px}.os-guides ol{padding-left:20px}.os-guides li{margin:0 0 14px}.os-guides pre{overflow:auto;background:#edf1f3;padding:10px;border-radius:6px;font-size:13px}.os-guides code{overflow-wrap:anywhere}.fallback{border-left:4px solid #0d6a74;background:#f1f4f5;padding:14px 20px;margin-top:20px}.connection-help>summary{font-size:17px}@media(max-width:1000px){.os-guides{grid-template-columns:1fr}}

html{scroll-behavior:smooth}.lab-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.lab-nav a{color:#12343b;text-decoration:none;background:#edf3f4;padding:9px 14px;border-radius:7px;font-size:14px}.passport-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}section h3{margin-top:28px}section[id]{scroll-margin-top:20px}@media(max-width:650px){.passport-grid{grid-template-columns:1fr}}

/* Оформление по Moodle_ЛР1_Цена_связности.html */
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
header{max-width:1200px;margin:0 auto;padding:48px 24px 28px;background:transparent;color:#1b2b30}
h1{font-size:clamp(30px,3.2vw,46px);line-height:1.18;letter-spacing:-.8px;margin:0 0 16px;font-weight:650;text-wrap:balance}
header p{max-width:760px;margin:0 0 16px;color:#3b4b51}.tags{font-size:14px;color:#6a7c83}
main{padding-top:0}section,details{border-radius:6px}h2{color:#12343b;font-size:22px}h3{color:#12343b}.lab-nav{border-top:1px solid #cfd8db;padding-top:18px;margin-bottom:28px}.lab-nav a{background:transparent;padding:7px 12px;border:1px solid #cfd8db;border-radius:4px;color:#0d6a74}.lab-nav a:hover{background:#edf3f4}a{color:#0d6a74}button,.file{border-radius:4px}input,select,textarea{border-radius:4px}.fallback{border-radius:0}.os-guides article{border-radius:6px}.connection-help>summary{color:#0d6a74}code{background:#f1f4f5;padding:1px 4px;border-radius:3px}pre code{background:transparent;padding:0}
@media(min-width:1100px){h1{white-space:nowrap}}
@media(max-width:650px){header{padding:30px 20px 24px}h1{letter-spacing:-.4px}}

/* Палитра и типографика действующего курса Moodle 4261. */
@font-face{font-family:'IBM Plex Sans';src:url('vendor/IBMPlexSans.ttf') format('truetype');font-weight:100 900;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('vendor/IBMPlexMono.ttf') format('truetype');font-weight:400;font-display:swap}
:root{--ink:#15202B;--navy:#13212F;--teal:#0B6E78;--line:#DDE3E8;--muted:#5A6875;--orange:#E08A2E}
body{background:#F3F6F7;color:var(--ink);font-family:'IBM Plex Sans',system-ui,sans-serif}
header{padding:40px 24px 25px}h1{font-family:'IBM Plex Sans',sans-serif;font-weight:700;font-size:clamp(30px,3.2vw,42px);color:var(--navy);line-height:1.12;letter-spacing:-.01em}
header p{font-size:17px;color:#3C4955}.tags{color:var(--muted);font-size:13px}
section,details{border:1px solid var(--line);border-radius:16px;background:#fff;padding:24px;margin-bottom:20px;box-shadow:none}
section>h2{display:flex;align-items:center;gap:16px;color:var(--ink);font-size:24px;line-height:1.25;font-weight:700}
.part-badge{display:inline-flex;align-items:center;justify-content:center;flex:0 0 48px;height:48px;border-radius:12px;background:#5DA2AA;color:#0B2E33;font:400 20px/1 'IBM Plex Mono',monospace}
h2 .part-title{flex:1}h2 small{display:block;margin-top:6px;color:var(--muted);font-size:13px;font-weight:400}h3{color:var(--ink)}
.lab-nav{border:0;padding-top:0;gap:8px}.lab-nav a{border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--teal);padding:10px 14px;font-weight:500}.lab-nav a:hover{background:#E3F0F1;border-color:#A9CFD3}
button,.file{font-family:'IBM Plex Sans',sans-serif;background:var(--teal);border-radius:10px;padding:12px 18px;font-weight:600;transition:background .15s}button:hover{background:#0B4F57}.secondary,.file{background:#ECEFF2;color:#3C4955}.secondary:hover,.file:hover{background:#DDE3E8}
input,select,textarea{border:1px solid #B9C3CC;border-radius:8px;font-family:'IBM Plex Sans',sans-serif}input:focus,select:focus,textarea:focus{outline:2px solid #5DA2AA;outline-offset:2px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
a,summary,.connection-help>summary{color:var(--teal)}.muted,footer{color:var(--muted)}th{color:var(--muted)}td,th{border-color:var(--line)}
code,pre,.bar{font-family:'IBM Plex Mono',monospace}code,pre{background:#F3F6F7}.os-guides article{background:#F7F9FA;border-color:var(--line);border-radius:12px}.os-guides pre{background:#ECEFF2}.fallback{border-left:3px solid var(--teal);background:#E3F0F1;border-radius:0 10px 10px 0}#feedback,#effect{background:#E3F0F1;color:#0B2E33;border-radius:10px}.bar{background:#5DA2AA;color:#0B2E33;font-size:11px}.track:nth-child(2n) .bar{background:#A9CFD3}
.finish{border-color:var(--navy)}#pdf{background:var(--orange);color:var(--navy)}#pdf:hover{background:#EC9A42}
@media(max-width:650px){section,details{padding:20px}section>h2{font-size:21px;gap:12px}.part-badge{flex-basis:40px;height:40px;font-size:17px}header{padding:28px 20px 22px}h1{white-space:normal}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}button,.file{transition:none}}

/* Единая высота однострочных полей и выбора варианта. */
input:not([type="file"]),select{height:48px;min-height:48px;line-height:24px;padding:11px 12px}select{appearance:none;-webkit-appearance:none;padding-right:36px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235A6875' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}

.grading table{min-width:0}.grading th:first-child,.grading td:first-child{width:100px;white-space:nowrap}.grading td:last-child{font-size:15px;min-width:0}.grading h3{margin-top:20px}

/* Ритм между инструкциями и ответами. */
section>p{margin:0 0 16px}
section>h2{margin-bottom:20px}
section>h3{margin:30px 0 14px}
section>ol{margin:16px 0 24px;padding-left:24px}
section>ol>li{margin-bottom:10px}
section>details{margin:22px 0 28px}
.fallback{margin:22px 0 28px;padding:18px 22px}
.fallback>h3{margin:0 0 12px}
.fallback>p{margin:0 0 14px}
.fallback>p:last-child{margin-bottom:0}
.fallback>ol{margin:16px 0;padding-left:22px}
.fallback>ol>li{margin-bottom:12px}
.fallback+.passport-grid{margin-top:28px}
.passport-grid{column-gap:24px;row-gap:8px;margin-bottom:14px}
section>label,#experiment>label{margin-top:22px;margin-bottom:22px}
label>input,label>select,label>textarea{margin-top:9px}
textarea{margin-bottom:0}
.scroll{margin:18px 0 26px}
#cases>label{margin:24px 0 30px}
#cases>label:first-child{margin-top:20px}
#cases textarea{margin-top:12px}
#experiment{margin-top:24px}
#experiment>ol{margin:20px 0 24px;padding-left:24px}
#experiment>ol>li{margin-bottom:12px}
#experiment>h3{margin:28px 0 14px}
#effect{margin:24px 0}
.actions{margin-top:20px}
@media(max-width:650px){.fallback{padding:16px 18px}.passport-grid{row-gap:4px}.fallback+.passport-grid{margin-top:24px}}

[hidden]{display:none!important}.wizard-progress{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}.wizard-progress button{background:#fff;color:#5A6875;border:1px solid #DDE3E8;font-size:13px;padding:10px 13px}.wizard-progress button.current{background:#0B6E78;color:#fff;border-color:#0B6E78}.wizard-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0 28px}.wizard-controls span{font-size:14px;color:#5A6875}#setup-message{color:#9b4410;margin-top:20px}.grading{margin-top:24px}h2:focus{outline:none}@media(max-width:650px){.wizard-progress{gap:6px}.wizard-progress button{font-size:12px;padding:9px}.wizard-controls{gap:10px}}

#growthFeedback:not(:empty){margin:22px 0;padding:18px;background:#E3F0F1;color:#0B2E33;border-radius:10px}#growthFeedback p{margin:0 0 16px}
@media(max-width:650px){input,select,textarea{font-size:16px!important;line-height:1.5}}