/* Hallmark · shape: app screen · genre: editorial · theme: user-directed Ozon reference · brand: Ozon (spec 2026-11-04) · redesign: restyle
 * nav: lesson titles without visible ordinals · footer: colophon · signature: practical course and direct monetary warnings
 * axes: light/grotesk-sans/blue · posture: full-palette · surface: absolute · copy: verbatim, visual lesson ordinals removed by request · imagery: none · v2.0.0 */
/* Hallmark · pre-emit critique: P4 H4 E4 S4 R4 V3 · weakest: V, shared reference-course template; updated real functional controls and warnings following the user's Ozon reference */
/* Hallmark · waive 7b · surface: absolute, Ozon reference tokens; contrast checked · white course surfaces pair with the official Ozon blue specified by the owner */
/* Hallmark · answered F4 · secondary actions use a pale Ozon blue with dark text; the primary action uses solid blue with white text */
/* Hallmark · finish-review: subagent · 1 finding · 1 resolved by recapture · calculator explanation links have persistent dark underlines */
@import url("./tokens.css");
@import url("./base.css");
@import url("./fonts/golos.css");

html, body { overflow-x: clip; }
body { font-synthesis: none; line-height: 1.7; }
a { color: var(--color-ink-2); text-decoration: none; text-underline-offset: .18em; }
a:hover { color: var(--color-accent); }
a:active { color: var(--color-mark); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible,
summary:focus-visible, .table-wrap:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 4px; }
button, a, input, textarea, summary { touch-action: manipulation; }
h1, h2, h3 { overflow-wrap: break-word; min-width: 0; text-wrap: balance; color: var(--color-ink); }
h1 { font-size: var(--text-display-s); line-height: 1.12; max-width: 28ch; }
h2 { font-size: var(--text-section); line-height: 1.2; }
h3 { font-size: var(--text-title); line-height: 1.3; letter-spacing: -.02em; }
p, li { text-wrap: pretty; }
q { quotes: "«" "»" "„" "“"; }
strong { font-weight: 600; }

.skip { position: fixed; top: calc(-1 * var(--space-3xl)); left: var(--space-md); z-index: var(--z-tooltip); background: var(--color-ink); color: var(--color-paper); padding: var(--space-xs) var(--space-md); }
.skip:focus-visible { top: var(--space-md); }
.sidebar { position: fixed; inset: 0 auto 0 0; width: var(--sidebar-width); overflow-y: auto; overscroll-behavior: contain; background: var(--color-paper-2); color: var(--color-ink); padding: var(--space-heading) var(--space-lg); z-index: var(--z-sticky-nav); }
.brand { display: block; color: var(--color-ink); font-size: 22px; line-height: 1.12; font-weight: 600; letter-spacing: -.02em; text-decoration: none; }
.brand small { display: block; margin-top: var(--space-sm); font-size: var(--text-xs); font-weight: 400; letter-spacing: normal; line-height: 1.5; color: var(--color-muted); }
.progress-caption { display: flex; justify-content: space-between; gap: var(--space-xs); font-size: var(--text-xs); color: var(--color-muted); margin-top: var(--space-heading); }
progress { display: block; appearance: none; width: 100%; height: 4px; border-radius: var(--radius-control); border: 0; margin: var(--space-sm) 0 var(--space-lg); background: var(--color-paper-3); }
progress::-webkit-progress-bar { background: var(--color-paper-3); }
progress::-webkit-progress-value { background: var(--color-accent); }
progress::-moz-progress-bar { background: var(--color-accent); }
.sidebar details { padding-block: var(--space-2xs); }
.sidebar summary { cursor: pointer; font-size: 14px; font-weight: 600; line-height: 1.5; min-height: var(--space-control); padding-block: var(--space-sm); }
.sidebar summary:hover { color: var(--color-accent); }
.sidebar ol { padding: 0; margin: 0 0 var(--space-sm); list-style: none; }
.sidebar li { margin: 0; }
.sidebar li a { display: grid; grid-template-columns: minmax(0, 1fr) 12px; gap: var(--space-xs); align-items: start; padding: var(--space-sm); margin-inline: calc(-1 * var(--space-sm)); color: var(--color-ink-2); font-size: 14px; line-height: 1.45; text-decoration: none; border-radius: var(--radius-control); }
.sidebar li a:hover { background: var(--color-paper-3); color: var(--color-ink); }
.sidebar li a[aria-current=page] { background: var(--color-accent-soft); color: var(--color-accent); }
.completion-symbol { font-variant-numeric: tabular-nums; }
.side-links { margin-top: var(--space-lg); display: grid; gap: var(--space-sm); }
.side-links a { font-size: var(--text-xs); color: var(--color-ink-2); text-decoration: none; min-height: 28px; display: flex; align-items: center; }
.side-links a:hover { color: var(--color-accent); }
.side-links .risk-link { color: var(--color-danger); font-weight: 600; }
.sidebar-note { margin-top: var(--space-lg); font-size: var(--text-xs); line-height: 1.6; color: var(--color-muted); }

.shell { margin-left: var(--sidebar-width); }
.topbar { display: flex; align-items: center; gap: var(--space-lg); min-height: var(--header-height); padding: var(--space-lg) var(--space-section); background: var(--color-paper); }
.search-wrap { width: min(600px, 100%); position: relative; min-width: 0; }
.search-wrap label { display: block; color: var(--color-muted); font-size: var(--text-sm); line-height: 1.5; margin-bottom: var(--space-2xs); }
#search { width: 100%; min-width: 0; height: var(--space-control); border: 1px solid var(--color-muted); background: var(--color-paper-2); color: var(--color-ink); padding: var(--space-xs) var(--space-md); border-radius: var(--radius-control); font-size: 16px; }
#search::placeholder { color: var(--color-muted); }
#search:hover { border-color: var(--color-accent); }
#search-results { position: absolute; inset: 100% 0 auto; padding: var(--space-lg); background: var(--color-paper-2); color: var(--color-ink); border: 1px solid var(--color-muted); border-radius: var(--radius-card); z-index: var(--z-dropdown); max-height: 70dvh; overflow-y: auto; }
#search-results[hidden] { display: none; }
#search-results p { font-size: var(--text-sm); margin: 0 0 var(--space-md); }
#search-results a { display: block; padding: var(--space-md); border-radius: var(--radius-control); text-decoration: none; }
#search-results strong { display: block; font-size: 16px; }
#search-results span { display: block; font-size: var(--text-sm); color: var(--color-ink-2); line-height: 1.6; margin-top: var(--space-2xs); }
#search-results a:hover { background: var(--color-accent-soft); }
.toplinks { display: flex; gap: var(--space-lg); margin-left: auto; font-size: var(--text-sm); white-space: nowrap; }
.toplinks a { padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-control); }
.toplinks a:hover { background: var(--color-accent-soft); }
.menu-toggle { display: none; }
.container { max-width: 1328px; padding: var(--space-xl) var(--space-section) var(--space-2xl); }
.page-reader .container { max-width: 1120px; padding-top: var(--space-heading); }
.article { max-width: var(--read-measure); margin-inline: auto; }
.article > h1:first-child { margin-bottom: var(--space-lg); }
.article a:not(.btn), .calculator p a { color: var(--color-ink-2); text-decoration: underline; text-decoration-color: currentColor; }
.article a:not(.btn):hover { color: var(--color-accent); text-decoration-color: currentColor; }
.article > p { margin-block: var(--space-lg); }
.article h2 { margin: var(--space-section) 0 var(--space-md); }
.article h3 { margin: var(--space-heading) 0 var(--space-sm); }
.article ul, .article ol { padding-left: var(--space-lg); margin-block: var(--space-lg); }
.article li { margin-block: var(--space-xs); }
.meta { display: flex; align-items: baseline; flex-wrap: wrap; gap: var(--space-xs) var(--space-lg); font-size: var(--text-sm); color: var(--color-muted); margin-bottom: var(--space-heading); }
.breadcrumb { margin: 0 0 var(--space-heading); font-size: var(--text-sm); color: var(--color-muted); }
.article-contents { margin-block: var(--space-lg) var(--space-heading); padding: var(--space-md) var(--space-lg); border: 1px solid var(--color-rule); border-radius: var(--radius-control); background: var(--color-paper-2); }
.article-contents summary { cursor: pointer; font-size: 16px; font-weight: 600; }
.article-contents:not([open]) nav { display: none; }
.article-contents ul { list-style: none; padding: 0; margin-block: var(--space-md) 0; }
.article-contents li { margin: 0; }
.article .article-contents a { display: block; min-height: var(--space-control); padding: var(--space-xs); border-radius: var(--radius-control); text-decoration: none; color: var(--color-ink-2); font-size: 16px; }
.article-contents a span { display: block; }
.article .article-contents a:hover { background: var(--color-accent-soft); color: var(--color-ink); }
.article blockquote { background: var(--color-paper-2); padding: var(--space-lg); margin: var(--space-heading) 0; }
.article blockquote p:last-child { margin-bottom: 0; }
.table-wrap { max-width: 100%; overflow-x: auto; margin-block: var(--space-heading); }
table { width: 100%; border-collapse: collapse; font-size: 16px; line-height: 1.6; overflow-wrap: normal; font-variant-numeric: tabular-nums; }
th, td { padding: var(--space-md) var(--space-sm); text-align: left; vertical-align: top; border-bottom: 1px solid var(--color-rule); }
th { font-size: 16px; font-weight: 600; background: var(--color-paper-2); }
pre { padding: var(--space-lg); background: var(--color-paper-2); color: var(--color-ink); font: 14px/1.7 var(--font-outlier); white-space: pre-wrap; overflow-wrap: anywhere; margin-block: var(--space-heading); }
code { font-family: var(--font-outlier); background: var(--color-paper-2); color: var(--color-ink); font-size: .85em; padding: var(--space-3xs) var(--space-2xs); }
pre code { padding: 0; font-size: inherit; }

button, .btn { display: inline-flex; justify-content: center; align-items: center; gap: var(--space-xs); min-height: var(--space-control); padding: var(--space-sm) var(--space-lg); border: 0; border-radius: var(--radius-control); background: var(--color-accent); color: var(--color-accent-ink); font-family: var(--font-body); font-size: 16px; font-weight: 600; line-height: 1.25; text-decoration: none; white-space: nowrap; cursor: pointer; }
button:hover, .btn:hover { background: var(--color-accent-hover); color: var(--color-accent-ink); }
button:active, .btn:active { background: var(--color-mark); color: var(--color-accent-ink); }
button:disabled, button[aria-disabled=true], .btn[aria-disabled=true] { opacity: .6; cursor: not-allowed; color: var(--color-ink-2); background: var(--color-paper-3); }
button[aria-busy=true] { cursor: progress; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md) var(--space-lg); margin-block: var(--space-lg); }
.btn:not(.primary), .export-zone button[data-print] { background: var(--color-accent-soft); color: var(--color-link); font-weight: 600; text-decoration: none; }
.btn:not(.primary):hover, .export-zone button[data-print]:hover { color: var(--color-link); background: var(--color-accent-soft-hover); }
.btn:not(.primary):active { color: var(--color-mark); }
.hero { display: block; max-width: 100%; margin-bottom: var(--space-section); }
.hero h1 { font-size: var(--text-display); max-width: 23ch; line-height: 1.02; margin-bottom: var(--space-lg); }
.hero > div > p { max-width: 50ch; font-size: var(--text-lead); }
.hero .caption { font-size: var(--text-sm); color: var(--color-muted); line-height: 1.6; }
.hero .caption a { display: inline-block; margin-top: var(--space-xs); white-space: nowrap; }
.course-head { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: var(--space-xl); align-items: start; margin-bottom: var(--space-section); }
.course-head .hero { margin: 0; }
.course-path { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-lg); background: var(--color-paper-2); padding: var(--space-heading); margin-block: var(--space-section); }
.course-path p { font-size: 22px; font-weight: 600; line-height: 1.25; }
.course-path span { display: block; font-size: 16px; font-weight: 400; line-height: 1.6; margin-top: var(--space-sm); color: var(--color-ink-2); }
.facts { display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-lg); margin: var(--space-md) 0 var(--space-lg); color: var(--color-muted); font-size: 16px; }
.facts strong { font-variant-numeric: tabular-nums; color: var(--color-ink); margin-right: var(--space-2xs); }
.section-heading { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: var(--space-md); }
.section-heading h2 { margin: 0; }
.section-heading a { font-size: var(--text-sm); }
.program { padding: 0; margin: 0; list-style: none; }
.page-home .container > section + section { margin-top: var(--space-2xl); }
.module-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-lg); align-items: center; padding: var(--space-lg); background: var(--color-paper-2); border: 1px solid var(--color-rule); border-radius: var(--radius-card); margin-top: var(--space-sm); }
.module-row h3 { margin: 0 0 var(--space-xs); font-size: 23px; }
.module-row p { font-size: 16px; line-height: 1.6; color: var(--color-ink-2); }
.module-row > a, .routes a { display: inline-flex; justify-content: center; align-items: center; min-height: var(--space-control); padding: var(--space-sm) var(--space-md); font-size: 16px; font-weight: 600; border-radius: var(--radius-control); background: var(--color-accent-soft); color: var(--color-link); white-space: nowrap; }
.module-row > a:hover, .routes a:hover { background: var(--color-accent-soft-hover); color: var(--color-link); }
.routes { display: grid; gap: var(--space-heading); margin-block: var(--space-heading); }
.routes > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-xs) var(--space-lg); align-items: start; }
.routes h3 { margin: 0; font-size: 22px; }
.routes p { font-size: 16px; line-height: 1.65; grid-column: 1; }
.routes a { font-size: 16px; white-space: nowrap; grid-column: 2; grid-row: 1 / 3; align-self: center; }
.notice { background: var(--color-paper-2); padding: var(--space-heading); margin-block: var(--space-section); font-size: 16px; }
.notice p + p { margin-top: var(--space-md); }

.callout { padding: var(--space-lg); margin-block: var(--space-heading); background: var(--color-note-paper); color: var(--color-ink); font-size: 16px; line-height: 1.7; break-inside: avoid; border: 1px solid var(--color-rule); border-radius: var(--radius-card); }
.callout-danger { background: var(--color-danger-paper); border-top: 2px solid var(--color-danger); }
.callout-warning { background: var(--color-warning-paper); }
.callout-note { background: var(--color-note-paper); }
.callout .callout-label { color: var(--color-note); font-size: 16px; font-weight: 600; margin-bottom: var(--space-sm); }
.callout-danger .callout-label { color: var(--color-danger); }
.callout-warning .callout-label { color: var(--color-warning); }
.callout p { margin: 0 0 var(--space-md); }
.callout p:last-child { margin-bottom: 0; }
.callout .btn { margin-top: var(--space-xs); }
.callout strong { font-weight: 600; }
.callout a { text-decoration-thickness: 1px; }
.home-traps { margin: 0; }
.home-traps a { font-size: 16px; }

.lesson-tools { margin-top: var(--space-2xl); padding: var(--space-heading); background: var(--color-paper-2); }
.lesson-tools h2 { margin: 0 0 var(--space-lg); }
.lesson-tools fieldset { border: 0; padding: 0; margin: 0 0 var(--space-lg); min-width: 0; }
.lesson-tools legend { font-weight: 600; margin-bottom: var(--space-sm); line-height: 1.5; }
.choice { display: flex; align-items: baseline; gap: var(--space-sm); margin-block: var(--space-xs); min-height: var(--space-control); cursor: pointer; font-size: 16px; }
.choice input { flex-shrink: 0; width: 18px; height: 18px; accent-color: var(--color-accent); }
.quiz-feedback { margin-block: var(--space-md); font-size: 16px; color: var(--color-ink-2); }
.quiz-feedback, #import-feedback { min-height: 1lh; }
.quiz-feedback[data-correct=false], [data-error=true] { color: var(--color-danger); }
.quiz-feedback[data-correct=true] { color: var(--color-success); }
.note-label { display: block; margin: var(--space-xl) 0 var(--space-sm); font-weight: 600; }
textarea { display: block; width: 100%; min-height: 160px; resize: vertical; border: 1px solid var(--color-muted); padding: var(--space-md); background: var(--color-paper); color: var(--color-ink); border-radius: var(--radius-control); line-height: 1.6; }
textarea:hover { background: var(--color-paper-2); }
.complete-line { display: flex; align-items: start; gap: var(--space-sm); margin-block: var(--space-lg); font-size: 16px; font-weight: 600; cursor: pointer; }
.complete-line input { width: 20px; height: 20px; margin: var(--space-2xs) 0 0; flex-shrink: 0; accent-color: var(--color-accent); }
.fine { font-size: var(--text-sm); color: var(--color-muted); line-height: 1.65; }
.fine + .fine { margin-top: var(--space-sm); }
.pager { display: flex; justify-content: space-between; gap: var(--space-heading); margin-top: var(--space-heading); font-size: 16px; }
.pager a { max-width: 47%; }
.pager a span { display: block; }
.pager-label { color: var(--color-muted); font-size: var(--text-sm); margin-bottom: var(--space-xs); }
.footer { max-width: 1328px; margin-inline: auto; padding: var(--space-heading) var(--space-section) var(--space-xl); font-size: var(--text-sm); color: var(--color-muted); line-height: 1.65; }
.footer a { display: inline-block; white-space: nowrap; }
.footer-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.25fr); gap: var(--space-xl); }
.footer h2 { margin: 0 0 var(--space-sm); font-size: 16px; line-height: 1.5; }
.footer .footer-name { margin-bottom: var(--space-lg); color: var(--color-ink); font-size: 24px; line-height: 1.3; font-weight: 600; }
.footer-contacts { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-sm); }
.footer-contacts .btn { font-size: 14px; padding-inline: var(--space-md); }
.footer .footer-email { flex-basis: 100%; white-space: normal; overflow-wrap: anywhere; text-decoration: underline; }
.footer-details dl { margin-block: var(--space-md); }
.footer-details dl div { display: flex; gap: var(--space-md); }
.footer-details dt { min-width: 60px; }
.footer-details dd { margin: 0; color: var(--color-ink-2); font-variant-numeric: tabular-nums; }
.footer-meta { margin-top: var(--space-heading); padding-top: var(--space-lg); border-top: 1px solid var(--color-rule); }
.footer-meta nav { display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-lg); margin-top: var(--space-md); }
.footer-meta nav a { text-decoration: underline; }
.js-only { display: none; }
.js .js-only { display: block; }
.js .js-only.actions { display: flex; }

.course-path, .notice, .lesson-tools, .results, .article blockquote, pre { border-radius: var(--radius-card); }
.calculator { max-width: 960px; margin: var(--space-section) 0 var(--space-2xl); }
.calculator h2 { margin: 0 0 var(--space-lg); }
.calculator > p { max-width: var(--read-measure); margin-block: var(--space-lg); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-lg) var(--space-heading); margin-block: var(--space-heading); }
.form-grid label { display: flex; flex-direction: column; font-size: 16px; line-height: 1.5; font-weight: 600; }
.form-grid small { display: block; font-size: var(--text-sm); line-height: 1.6; color: var(--color-muted); font-weight: 400; margin-top: var(--space-2xs); min-height: 44px; }
.form-grid input { width: 100%; margin-top: var(--space-sm); border: 1px solid var(--color-muted); border-radius: var(--radius-control); min-height: var(--space-control); padding: var(--space-xs) var(--space-md); background: var(--color-paper-2); color: var(--color-ink); font-size: 22px; font-weight: 400; font-variant-numeric: tabular-nums; }
.form-grid input:hover { border-color: var(--color-accent); }
.results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-heading); background: var(--color-field); color: var(--color-field-ink); padding: var(--space-heading); margin-block: var(--space-heading); }
.results > div { display: flex; flex-direction: column; }
.results span { display: block; font-size: 16px; line-height: 1.5; color: var(--color-field-ink); }
.results strong { display: block; padding-top: var(--space-md); font-size: 32px; line-height: 1.2; margin-top: auto; font-variant-numeric: tabular-nums; }
.tool-output { max-width: var(--read-measure); margin-block: var(--space-lg); font-size: 16px; }
.export-zone { margin-top: var(--space-2xl); padding-top: var(--space-heading); }
.export-zone > p { max-width: var(--read-measure); }
.file-label { position: relative; cursor: pointer; }
.file-label input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-label:focus-within { outline: 3px solid var(--color-focus); outline-offset: 4px; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: calc(-1 * var(--space-5xs)); overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
.quiet-button { color: var(--color-link); background: var(--color-accent-soft); white-space: normal; text-align: left; }
.quiet-button:hover { background: var(--color-accent-soft-hover); color: var(--color-link); }
.quiet-button[aria-pressed=true] { background: var(--color-accent-soft); color: var(--color-mark); }
.practice-intro { max-width: 66ch; margin-bottom: var(--space-section); }
.practice-intro h1 { margin-bottom: var(--space-lg); }
.practice-intro p { max-width: 54ch; }
.practice-jumps { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-lg); }
.practice-jumps .btn { white-space: normal; text-align: center; }
.practice-section { padding-block: var(--space-heading) var(--space-section); border-top: 1px solid var(--color-rule); scroll-margin-top: var(--space-lg); }
.practice-section h2 { margin: 0 0 var(--space-md); }
.practice-section > p { max-width: 66ch; }
.js .scenario-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.5fr); gap: var(--space-heading); align-items: start; margin-top: var(--space-heading); }
.scenario-list { display: grid; gap: var(--space-xs); }
.scenario-mobile { display: none; }
select:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 4px; }
.scenario-picker { display: block; width: 100%; padding: var(--space-xs) var(--space-md); font-weight: 400; background: var(--color-paper-2); color: var(--color-ink-2); border: 1px solid var(--color-rule); text-align: left; white-space: nowrap; line-height: 1.5; }
.scenario-picker:hover { background: var(--color-accent-soft); color: var(--color-ink); }
.scenario-picker[aria-pressed=true] { background: var(--color-accent-soft); color: var(--color-mark); border-color: var(--color-accent); }
.scenario-work { padding: var(--space-lg); border: 1px solid var(--color-rule); border-radius: var(--radius-card); background: var(--color-paper-2); }
.scenario-work h3 { margin: var(--space-xs) 0 var(--space-md); font-size: 24px; }
.scenario-work > p { margin-bottom: var(--space-md); }
.practice-section fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.scenario-work fieldset { margin-block: var(--space-md); }
.scenario-work .actions { gap: var(--space-sm); }
.scenario-work .btn, .scenario-work button { white-space: normal; }
.scenario-feedback { margin-top: var(--space-lg); font-size: 16px; }
.scenario-feedback strong { display: block; margin-bottom: var(--space-xs); }
.scenario-feedback[data-correct=false] strong { color: var(--color-danger); }
.scenario-feedback[data-correct=true] strong { color: var(--color-success); }
.scenario-fallback details { padding-block: var(--space-md); border-bottom: 1px solid var(--color-rule); }
.scenario-fallback summary { cursor: pointer; font-weight: 600; }
.scenario-fallback p { margin-block: var(--space-md); }
.route-choices { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: var(--space-md); margin-top: var(--space-lg); }
.route-choice { display: flex; gap: var(--space-sm); align-items: start; padding: var(--space-lg); border: 1px solid var(--color-rule); border-radius: var(--radius-card); background: var(--color-paper-2); cursor: pointer; }
.route-choice:has(input:checked) { border-color: var(--color-accent); background: var(--color-accent-soft); }
.route-choice input { margin-top: var(--space-xs); flex-shrink: 0; accent-color: var(--color-accent); }
.route-choice strong, .route-choice small { display: block; font-size: 16px; line-height: 1.55; }
.route-choice small { font-weight: 400; color: var(--color-muted); margin-top: var(--space-sm); }
.route-result { margin-top: var(--space-lg); max-width: 66ch; }
.route-result > .btn { margin-block: var(--space-md); }
.route-lessons, .saved-list { list-style: none; padding: 0; margin: var(--space-lg) 0 0; }
.route-lessons li { display: flex; justify-content: space-between; gap: var(--space-md); padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-rule); }
.route-lessons a, .saved-list a, .launch-check a { text-decoration: underline; font-size: 16px; }
.route-lessons .fine { flex-shrink: 0; }
.text-field { display: block; width: 100%; max-width: 66ch; min-height: var(--space-control); padding: var(--space-sm) var(--space-md); border: 1px solid var(--color-muted); border-radius: var(--radius-control); background: var(--color-paper-2); color: var(--color-ink); font: 16px/1.5 var(--font-body); }
.launch-checks { margin-block: var(--space-lg); }
.practice-section .launch-check { border-bottom: 1px solid var(--color-rule); padding-block: var(--space-lg); }
.launch-check legend { font-weight: 600; padding-top: var(--space-lg); }
.launch-check p { color: var(--color-muted); font-size: 16px; max-width: 66ch; }
.check-options { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); margin-block: var(--space-md); }
.check-options label { display: flex; align-items: center; gap: var(--space-xs); min-height: var(--space-control); font-size: 16px; cursor: pointer; }
.check-options input { accent-color: var(--color-accent); width: 18px; height: 18px; }
.launch-summary { background: var(--color-note-paper); border-radius: var(--radius-card); padding: var(--space-lg); margin-block: var(--space-heading); max-width: 66ch; }
.launch-summary h3 { margin-bottom: var(--space-md); }
.launch-summary p, .launch-summary li { font-size: 16px; }
.launch-summary ul { padding-left: var(--space-lg); margin-top: var(--space-md); }
.saved-list li { padding-block: var(--space-lg); border-bottom: 1px solid var(--color-rule); }
.saved-note { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 16px; color: var(--color-ink-2); margin-top: var(--space-sm); }
.saved-list button { margin-top: var(--space-md); }
.page-practice .notice a { text-decoration: underline; }
.footer p + p { margin-top: var(--space-xs); }

@media (min-width: 1600px) { .container { padding-top: var(--space-section); } }
@media (max-width: 1200px) { .course-head { grid-template-columns: minmax(0, 1fr); } .home-traps { max-width: 66ch; } .hero h1 { font-size: 48px; } }
@media (max-width: 960px) {
  .js .scenario-layout { grid-template-columns: minmax(0,1fr); }
  .scenario-list { display: none; }
  .scenario-mobile { display: grid; gap: var(--space-sm); font-size: 16px; }
  .scenario-mobile select { width: 100%; min-width: 0; min-height: var(--space-control); padding: var(--space-sm); border: 1px solid var(--color-muted); border-radius: var(--radius-control); background: var(--color-paper-2); color: var(--color-ink); font: inherit; }
  .route-choices { grid-template-columns: minmax(0,1fr); }
  .sidebar { display: none; top: var(--header-height); width: min(88%, 320px); }
  .sidebar.mobile-open { display: block; }
  .shell { margin-left: 0; }
  .menu-toggle { display: inline-flex; }
  .topbar { padding: var(--space-md) var(--space-lg); }
  .toplinks { display: none; }
  .search-wrap label { display: none; }
  .container, .page-reader .container { padding: var(--space-heading) var(--space-lg) var(--space-section); }
  .hero h1 { font-size: 44px; }
  .course-head { gap: var(--space-heading); }
  .module-row { grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-md); }
  .module-row h3 { font-size: 22px; }
  .article { max-width: var(--read-measure); }
  .footer { padding-inline: var(--space-lg); }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: minmax(0,1fr); gap: var(--space-heading); }
  .scenario-work { padding: var(--space-md); }
  .route-lessons li { display: block; }
  .route-lessons .fine { display: block; }
  body { font-size: 17px; }
  .container, .page-reader .container { padding-inline: var(--space-md); }
  .topbar { gap: var(--space-md); padding-inline: var(--space-md); }
  .menu-toggle { padding-inline: var(--space-md); }
  #search { font-size: 16px; }
  .hero h1 { font-size: 36px; }
  .article h1 { font-size: 32px; }
  .article h2 { font-size: 25px; }
  .article h3 { font-size: 22px; }
  .meta { gap: var(--space-xs) var(--space-md); margin-bottom: var(--space-lg); }
  .facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); font-size: 16px; gap: var(--space-sm); }
  .module-row { grid-template-columns: minmax(0, 1fr); padding-block: var(--space-lg); gap: var(--space-sm); }
  .module-row h3 { font-size: 22px; }
  .module-row > a { grid-column: 1; justify-self: start; }
  .routes > div { display: block; }
  .routes p { margin-block: var(--space-sm); }
  .course-path { grid-template-columns: minmax(0, 1fr); padding: var(--space-lg); }
  .callout, .notice, .lesson-tools { padding: var(--space-lg) var(--space-md); }
  .wide-table table { min-width: 620px; }
  th, td { padding: var(--space-sm) var(--space-xs); }
  .pager { flex-direction: column; gap: var(--space-lg); }
  .pager a { max-width: 100%; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .form-grid small { min-height: 0; }
  .results { grid-template-columns: minmax(0, 1fr); padding: var(--space-lg); }
  .results strong { margin-top: var(--space-xs); }
  .footer { padding-inline: var(--space-md); }
}
@media print {
  .sidebar, .topbar, .lesson-tools, .pager, .footer, .actions, .export-zone, .skip, .article-contents { display: none !important; }
  .shell { margin: 0; }
  .container, .page-reader .container { max-width: none; padding: 0; }
  .article { max-width: none; }
  body { font-size: 11pt; background: var(--color-paper); color: var(--color-ink); }
  .article h1, h1 { font-size: 25pt; }
  .article h2, h2 { font-size: 18pt; break-after: avoid; }
  .article h3, h3 { font-size: 14pt; break-after: avoid; }
  .callout { border: 1px solid var(--color-muted); background: var(--color-paper); font-size: 10.5pt; }
  .callout .callout-label { color: var(--color-ink); }
  .table-wrap { overflow: visible; }
  .wide-table table { min-width: 0; }
  table, pre, blockquote { break-inside: avoid; }
  a { color: var(--color-ink); }
  .js-only.calculator { display: block; }
}

/* Account tools follow the course palette and reading rhythm. */
[hidden]{display:none!important}
.account-link{white-space:nowrap;border:1px solid var(--line,#dbe3ed);border-radius:12px;padding:8px 14px!important}
.account-card{background:#fff;border:1px solid var(--line,#dbe3ed);border-radius:16px;padding:clamp(20px,4vw,32px);margin:28px 0}
.account-card h2{margin-top:0}
.consent-line{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.55;margin:20px 0}
.consent-line input{margin-top:5px;flex:none;width:18px;height:18px;accent-color:#005bff}
.yandex-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:#171717;color:#fff;border-color:#171717;min-height:48px}
.yandex-button:hover{background:#333;color:#fff}
.yandex-letter{font-family:Arial,sans-serif;font-size:25px;font-weight:700;line-height:1}
button:disabled{cursor:default;opacity:.5}
.account-delete{margin-top:26px}
.account-delete summary{cursor:pointer;color:#56687a;font-size:15px}
.sync-conflict{border-left:3px solid #d79b24;padding:8px 0 8px 20px;margin-top:24px}
@media(max-width:680px){.account-link{padding:6px 9px!important}.account-card .actions{align-items:stretch}.account-card .actions>*{width:100%}.toplinks{flex-wrap:wrap}}