:root{--bg:#f5f7fb;--surface:#fff;--text:#172033;--muted:#687386;--line:#e3e7ef;--blue:#2368ff;--blue2:#154dcc;--green:#11875d;--red:#c93c49;--amber:#b66a00;--shadow:0 18px 55px rgba(28,45,75,.09);--radius:22px;--max:1240px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.58}.course-container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}.course-topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.topbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none}.brand strong,.brand small{display:block}.brand small{font-size:12px;color:var(--muted);font-weight:500}.topnav{display:flex;gap:23px}.topnav a{color:#3c475a;text-decoration:none;font-size:14px;font-weight:650}.topnav a:hover{color:var(--blue)}.course-main{min-height:70vh}.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(330px,.6fr);gap:38px;padding-top:72px;padding-bottom:44px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--blue)}h1,h2,h3{line-height:1.15;margin-top:0}h1{font-size:clamp(38px,5vw,67px);letter-spacing:-.035em;margin:12px 0 20px}.hero-copy>p{font-size:19px;max-width:800px;color:#4d586b}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:13px;border:1px solid transparent;text-decoration:none;font:inherit;font-weight:750;cursor:pointer;transition:.18s ease}.btn.primary{background:var(--blue);color:#fff}.btn.primary:hover{background:var(--blue2);transform:translateY(-1px)}.btn.secondary{background:#fff;color:var(--text);border-color:var(--line)}.btn.secondary:hover{border-color:#bbc6da}.hero-panel{background:linear-gradient(145deg,#111c35,#1c3264);color:#fff;border-radius:28px;padding:28px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;box-shadow:var(--shadow)}.stat{padding:10px}.stat strong{font-size:32px;display:block}.stat span{font-size:12px;opacity:.72}.course-how{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:76px}.how-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;display:flex;gap:13px}.how-item>span{flex:0 0 31px;height:31px;display:grid;place-items:center;background:#eaf0ff;color:var(--blue);border-radius:50%;font-weight:800}.how-item p{margin:4px 0 0;color:var(--muted);font-size:13px}.program-section{padding-bottom:80px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:24px}.section-heading h2,.final-cta h2{font-size:36px;margin:7px 0 0}.search-box{width:min(410px,100%);display:block}.search-box span{font-size:12px;font-weight:700;color:var(--muted)}.search-box input{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:13px;background:#fff;padding:13px 15px;font:inherit;outline:none}.search-box input:focus{border-color:#7ea4ff;box-shadow:0 0 0 4px #e9f0ff}.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.module-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 9px 25px rgba(28,45,75,.045)}.module-card-head{display:flex;align-items:start;gap:16px}.module-number{flex:0 0 48px;height:48px;border-radius:14px;display:grid;place-items:center;background:#edf2ff;color:var(--blue);font-weight:850}.module-meta{font-size:12px;color:var(--muted);margin-bottom:4px}.module-card h3{font-size:22px;margin:0}.module-card>p{color:var(--muted);font-size:14px}.lesson-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.lesson-list li{border-bottom:1px solid var(--line)}.lesson-list a{display:grid;grid-template-columns:1fr auto;align-items:center;gap:9px;text-decoration:none;color:#263247;padding:11px 2px;font-size:14px}.lesson-list a:hover{color:var(--blue)}.lesson-list small{color:#8a94a5}.module-test-link{display:inline-block;margin-top:18px;text-decoration:none;font-weight:750;color:var(--blue)}.empty-search{padding:40px;background:#fff;border:1px solid var(--line);border-radius:18px;text-align:center;color:var(--muted)}.final-cta{margin-bottom:70px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:35px;display:flex;align-items:center;justify-content:space-between;gap:30px}.final-cta p{color:var(--muted);max-width:750px}.course-footer{border-top:1px solid var(--line);background:#fff}.footer-inner{padding:30px 0;display:grid;grid-template-columns:240px 1fr;gap:30px;color:var(--muted);font-size:13px}.footer-inner strong{color:var(--text)}.lesson-layout{display:grid;grid-template-columns:285px minmax(0,820px);gap:52px;align-items:start;padding-top:40px;padding-bottom:70px}.lesson-sidebar{position:sticky;top:96px}.back-link{display:inline-block;color:var(--blue);font-weight:700;text-decoration:none;margin-bottom:20px}.sidebar-module{padding:17px 18px;background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:10px}.sidebar-module small,.sidebar-module b{display:block}.sidebar-module small{color:var(--muted);font-size:11px;margin-bottom:4px}.sidebar-lessons{display:grid;gap:4px}.sidebar-lessons a{display:grid;grid-template-columns:26px 1fr;gap:9px;padding:10px 12px;border-radius:11px;color:#4a566a;text-decoration:none;font-size:13px}.sidebar-lessons a>span{width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:#e9edf4;font-size:11px}.sidebar-lessons a.active{background:#eaf0ff;color:#174ec4;font-weight:750}.sidebar-test{display:block;margin-top:16px;padding:12px;text-align:center;border:1px solid #b7c8ee;border-radius:12px;color:var(--blue);font-weight:750;text-decoration:none}.lesson-content{min-width:0}.lesson-head{padding:8px 0 22px;border-bottom:1px solid var(--line)}.lesson-kicker{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:750}.lesson-head h1{font-size:clamp(34px,4.7vw,52px);margin:12px 0 18px}.lesson-goal{font-size:17px;color:#526077}.lesson-section{padding:29px 0 5px}.lesson-section h2,.remember-box h2,.quiz-heading h2{font-size:26px;margin-bottom:14px}.lesson-prose{font-size:17px}.lesson-prose p{margin:0 0 15px}.lesson-prose ul,.lesson-prose ol{padding-left:24px}.lesson-prose li{margin:7px 0}.formula{display:block;width:max-content;max-width:100%;overflow:auto;background:#111827;color:#fff;padding:12px 16px;border-radius:11px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;margin:12px 0}.example{background:#eff5ff;border-left:4px solid var(--blue);border-radius:0 12px 12px 0;padding:15px 18px;margin:14px 0}.warning{background:#fff7e6;border-left:4px solid #e09819;border-radius:0 12px 12px 0;padding:15px 18px;margin:14px 0}.note{background:#effbf5;border-left:4px solid var(--green);border-radius:0 12px 12px 0;padding:15px 18px;margin:14px 0}.remember-box{margin:32px 0;padding:25px;background:#101b35;color:#fff;border-radius:20px}.remember-box h2{margin-bottom:12px}.remember-box li{margin:7px 0;color:#dbe3f4}.source-details{margin:25px 0;border:1px solid var(--line);border-radius:14px;background:#fff;padding:0 17px}.source-details summary{cursor:pointer;padding:14px 0;font-weight:750}.source-details p{font-size:13px;color:var(--muted)}.source-note{border-top:1px solid var(--line);padding-top:11px}.quiz-section{margin-top:45px;padding-top:38px;border-top:1px solid var(--line)}.quiz-heading{display:flex;justify-content:space-between;align-items:end;gap:20px}.quiz-heading h2{margin:5px 0 0}.quiz-heading>span{font-size:12px;color:var(--muted)}.quiz-list{display:grid;gap:17px;margin-top:22px}.quiz-question{border:1px solid var(--line);border-radius:17px;padding:20px;background:#fff;margin:0;min-width:0}.quiz-question legend{font-weight:750;font-size:16px;padding:0 5px}.quiz-question legend>span{color:var(--blue)}.question-context{font-size:11px;color:var(--muted);margin-bottom:7px}.quiz-options{display:grid;gap:9px;margin-top:15px}.quiz-option{display:grid;grid-template-columns:20px 31px 1fr;align-items:center;gap:8px;padding:11px 12px;border:1px solid #e3e7ef;border-radius:12px;cursor:pointer}.quiz-option:hover{border-color:#a8bce8;background:#f8faff}.quiz-option input{margin:0}.option-letter{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:#edf1f7;font-size:12px;font-weight:800}.quiz-option.is-correct{border-color:#65c8a4;background:#edf9f4}.quiz-option.is-wrong{border-color:#ef9da5;background:#fff3f4}.quiz-question.correct{border-color:#8fd6ba}.quiz-question.wrong{border-color:#efb2b8}.quiz-question.unanswered{border-color:#e5b66f}.quiz-feedback{font-size:13px;margin-top:13px;padding:12px 14px;border-radius:10px;background:#f5f7fa;color:#4e596c}.quiz-actions{display:flex;gap:12px;margin-top:22px}.quiz-result{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;padding:18px;border-radius:14px}.quiz-result strong{font-size:18px}.quiz-result small{width:100%}.quiz-result.passed{background:#e7f7f0;color:#076c49}.quiz-result.failed{background:#fff0f1;color:#a62937}.quiz-result.warning-result{background:#fff7e8;color:#8a5900}.lesson-next-prev{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:48px;border-top:1px solid var(--line);padding-top:25px}.lesson-next-prev>div:last-child{text-align:right}.lesson-next-prev a{display:inline-flex;flex-direction:column;text-decoration:none;color:var(--text)}.lesson-next-prev small{color:var(--muted)}.lesson-next-prev b{color:var(--blue)}.test-page{max-width:900px;padding-top:55px;padding-bottom:80px}.test-intro{margin:10px 0 34px}.test-intro h1{font-size:clamp(38px,5vw,58px);margin:10px 0 15px}.test-intro p{font-size:17px;color:var(--muted)}.error-page{padding:90px 0}.error-page h1{font-size:48px}.course-footer span{color:var(--muted)}
@media (max-width:1000px){.hero{grid-template-columns:1fr}.course-how{grid-template-columns:1fr 1fr}.module-grid{grid-template-columns:1fr}.lesson-layout{grid-template-columns:230px minmax(0,1fr);gap:30px}.topnav a:last-child{display:none}}
@media (max-width:760px){.course-container{width:min(100% - 24px,var(--max))}.topbar-inner{height:64px}.brand small{display:none}.topnav{gap:13px}.topnav a{font-size:12px}.hero{padding-top:42px}.hero-panel{grid-template-columns:repeat(3,1fr);padding:18px}.stat strong{font-size:25px}.course-how{grid-template-columns:1fr}.section-heading{display:block}.search-box{margin-top:18px}.section-heading h2,.final-cta h2{font-size:30px}.final-cta{display:block;padding:25px}.final-cta .btn{margin-top:10px}.lesson-layout{display:block;padding-top:24px}.lesson-sidebar{position:static;margin-bottom:28px}.sidebar-lessons{grid-template-columns:1fr 1fr}.lesson-head h1{font-size:38px}.lesson-prose{font-size:16px}.quiz-option{grid-template-columns:18px 28px 1fr}.lesson-next-prev{grid-template-columns:1fr}.lesson-next-prev>div:last-child{text-align:left}.footer-inner{grid-template-columns:1fr}.hero-copy>p{font-size:17px}}
@media (max-width:480px){.topnav a:first-child{display:none}.hero-panel{grid-template-columns:1fr 1fr}.stat:nth-child(3){grid-column:1/-1}.module-card{padding:20px}.sidebar-lessons{grid-template-columns:1fr}.quiz-heading{display:block}.quiz-heading>span{display:block;margin-top:8px}.quiz-actions{display:grid}.btn{width:100%}}
@media print{.course-topbar,.course-footer,.lesson-sidebar,.quiz-section,.lesson-next-prev{display:none!important}.lesson-layout{display:block}.course-container{width:100%}.lesson-content{max-width:none}.lesson-prose{font-size:12pt}}

/* Диагностика загрузки тестов */
.quiz-loading,
.quiz-noscript {
  padding: 18px 20px;
  border: 1px solid #dce4f0;
  border-radius: 12px;
  background: #f8fafc;
  color: #526079;
  font-size: 15px;
}
.quiz-noscript { display: block; margin-top: 12px; }

/* v2.2 — обновлённый дизайн тестов */
.test-page{
  width:min(1100px,calc(100% - 40px));
  max-width:1100px;
  margin-inline:auto;
}
.test-intro{margin:8px 0 28px}
.test-intro h1{max-width:900px}
.quiz-list{display:grid;gap:22px;margin-top:22px}
.quiz-question{
  border:1px solid #dfe5ef;
  border-radius:22px;
  padding:24px;
  background:#fff;
  margin:0;
  min-width:0;
  box-shadow:0 8px 28px rgba(28,45,75,.045);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.quiz-question:focus-within{
  border-color:#b8ccff;
  box-shadow:0 10px 34px rgba(35,104,255,.08);
}
.question-context{
  font-size:12px;
  color:var(--muted);
  margin:0 0 11px 52px;
}
.quiz-question-title{
  display:grid;
  grid-template-columns:38px minmax(0,1fr);
  gap:14px;
  align-items:start;
}
.question-number{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border-radius:11px;
  background:#eaf0ff;
  color:var(--blue);
  font-size:16px;
  line-height:1;
  font-weight:850;
}
.quiz-question-title h3{
  margin:3px 0 0;
  font-size:20px;
  line-height:1.35;
  letter-spacing:-.012em;
  font-weight:780;
}
.quiz-options{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin:20px 0 0 52px;
}
.quiz-option{
  display:grid;
  grid-template-columns:22px 34px minmax(0,1fr);
  align-items:center;
  gap:11px;
  min-height:64px;
  padding:11px 14px;
  border:1px solid #dfe5ef;
  border-radius:15px;
  background:#fff;
  cursor:pointer;
  user-select:none;
  transition:border-color .16s ease,background .16s ease,box-shadow .16s ease,transform .16s ease;
}
.quiz-option:hover{
  border-color:#9bb8ff;
  background:#f8faff;
  box-shadow:0 5px 16px rgba(35,104,255,.06);
}
.quiz-option:has(input:checked){
  border-color:#7da4ff;
  background:#f3f7ff;
  box-shadow:0 0 0 2px rgba(35,104,255,.06);
}
.quiz-option input{
  appearance:none;
  -webkit-appearance:none;
  width:20px;
  height:20px;
  margin:0;
  border:2px solid #9da8b8;
  border-radius:50%;
  background:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
}
.quiz-option input::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--blue);
  transform:scale(0);
  transition:transform .12s ease;
}
.quiz-option input:checked{border-color:var(--blue)}
.quiz-option input:checked::before{transform:scale(1)}
.quiz-option input:disabled{cursor:default}
.option-letter{
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:10px;
  background:#eef2f8;
  color:#263247;
  font-size:14px;
  line-height:1;
  font-weight:850;
}
.option-label{
  min-width:0;
  font-size:16px;
  line-height:1.38;
  color:#273248;
}
.quiz-option.is-correct{
  border-color:#60c79f;
  background:#effaf5;
  box-shadow:none;
}
.quiz-option.is-correct .option-letter{background:#dff5eb;color:#08704d}
.quiz-option.is-wrong{
  border-color:#ee9aa4;
  background:#fff3f4;
  box-shadow:none;
}
.quiz-option.is-wrong .option-letter{background:#ffe1e4;color:#a62937}
.quiz-question.correct{border-color:#92d8bc}
.quiz-question.wrong{border-color:#efb0b7}
.quiz-question.unanswered{border-color:#e7b76a}
.quiz-feedback{
  margin:16px 0 0 52px;
  padding:13px 15px;
  border-radius:12px;
  background:#f5f7fa;
  color:#4e596c;
  font-size:13px;
  line-height:1.5;
}
.quiz-actions{
  display:flex;
  gap:12px;
  margin-top:24px;
  padding:18px 0 0;
}
.quiz-actions .btn{min-width:170px}
.quiz-result{margin-top:18px}

@media (max-width:820px){
  .test-page{width:min(100% - 24px,1100px)}
  .quiz-options{grid-template-columns:1fr}
}
@media (max-width:560px){
  .quiz-question{padding:18px}
  .quiz-question-title{grid-template-columns:34px minmax(0,1fr);gap:10px}
  .question-number{width:34px;height:34px;border-radius:10px;font-size:14px}
  .quiz-question-title h3{font-size:17px;margin-top:3px}
  .question-context,.quiz-options,.quiz-feedback{margin-left:44px}
  .quiz-options{margin-top:15px;gap:9px}
  .quiz-option{grid-template-columns:20px 30px minmax(0,1fr);min-height:56px;padding:9px 11px;border-radius:13px;gap:9px}
  .option-letter{width:30px;height:30px;border-radius:9px;font-size:13px}
  .option-label{font-size:15px}
  .quiz-actions{display:grid}
  .quiz-actions .btn{width:100%}
}

.practice-note{margin-top:12px;color:#556176;font-size:.96rem}
.warning-box{padding:16px 18px;border-radius:16px;background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12}
.hours-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#eef4ff;color:#175cd3;font-weight:700;font-size:.86rem}
.course-hours{font-weight:700;color:#175cd3}

.course-topbar .logo{font-family:'Space Grotesk',Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:24px;font-weight:700;line-height:1;color:#111827!important;text-decoration:none!important;white-space:nowrap}.course-topbar .logo .plus{background:linear-gradient(90deg,#00C6FF,#7F00FF);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}.course-topbar .logo:hover{color:#111827!important}