:root{
  --ink:#17201d;
  --green:#0f4b3a;
  --green-2:#1e6854;
  --mint:#e9f2ed;
  --cream:#f7f4ee;
  --paper:#fffdf9;
  --line:#d9ded9;
  --muted:#68716e;
  --danger:#b63b3b;
  --danger-bg:#fdeaea;
  --success:#16704f;
  --success-bg:#e8f5ee;
  --shadow:0 12px 34px rgba(28,38,34,.08);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color:var(--ink);
  background:var(--cream);
}
button{font:inherit}
.topbar{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:0 5vw;
  border-bottom:1px solid var(--line);
  background:rgba(255,253,249,.96);
  position:sticky;
  top:0;
  z-index:20;
  backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:10px;font-family:Georgia,serif;font-size:21px;font-weight:700;cursor:pointer;white-space:nowrap}
.brand-mark{font-size:24px;color:var(--green)}
.desktop-nav{display:flex;gap:8px}
.desktop-nav button{border:0;background:transparent;padding:10px 12px;cursor:pointer;color:#28302d}
.desktop-nav button:hover{color:var(--green)}
.user-pill{display:flex;flex-direction:column;align-items:flex-end;font-size:13px}
.user-pill small{color:var(--muted)}
main{max-width:1180px;margin:0 auto;padding:38px 24px 100px}
.hero{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:30px;
  padding:42px;
  border:1px solid var(--line);
  border-radius:24px;
  background:
    radial-gradient(circle at 76% 26%, rgba(15,75,58,.12), transparent 34%),
    linear-gradient(135deg,#fffdf9,#f3efe7);
  box-shadow:var(--shadow);
}
.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:var(--muted);font-size:12px}
h1,h2,h3{font-family:Georgia,serif;margin-top:0}
h1{font-size:58px;line-height:1.02;margin-bottom:16px}
h2{font-size:34px}
.hero p{font-size:20px;line-height:1.55;max-width:640px;color:#343d39}
.hero-art{
  min-height:310px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  border-radius:20px;
  background:linear-gradient(160deg,rgba(15,75,58,.12),rgba(255,255,255,.35));
}
.hero-symbol{font-size:96px}
.hero-art strong{font-family:Georgia,serif;font-size:24px;margin-top:14px}
.hero-actions,.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{
  border:1px solid var(--green);
  border-radius:12px;
  padding:14px 20px;
  cursor:pointer;
  font-weight:700;
  transition:.15s;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--green);color:white}
.btn-secondary{background:transparent;color:var(--green)}
.section{margin-top:34px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
.section-head p{color:var(--muted);margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:18px;
  padding:22px;
  box-shadow:0 7px 20px rgba(28,38,34,.05);
}
.card h3{font-size:22px;margin-bottom:8px}
.muted{color:var(--muted)}
.locked{opacity:.55}
.course-hero{
  background:linear-gradient(120deg,#fffdf9 52%,#e9eee9);
  border:1px solid var(--line);
  border-radius:22px;
  padding:32px;
  box-shadow:var(--shadow);
}
.course-title{display:flex;justify-content:space-between;gap:24px}
.course-title h1{font-size:48px}
.stat-row{display:grid;grid-template-columns:1.4fr repeat(3,.7fr);gap:12px;margin-top:25px}
.stat{
  padding:16px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.72)
}
.stat strong{display:block;font-size:24px}
.progress{height:10px;background:#dde3df;border-radius:999px;overflow:hidden}
.progress > span{display:block;height:100%;background:var(--green);border-radius:999px}
.topic-list{display:flex;flex-direction:column;gap:10px}
.topic{
  display:grid;
  grid-template-columns:46px 1.6fr 1fr 100px;
  align-items:center;
  gap:16px;
  padding:15px 16px;
  border-radius:14px;
  background:var(--paper);
  border:1px solid var(--line);
}
.num{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;background:var(--mint);font-weight:800
}
.topic small{color:var(--muted)}
.quiz-wrap{display:grid;grid-template-columns:220px 1fr;gap:22px}
.side-panel,.quiz-card,.result-card{
  background:var(--paper);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
}
.side-panel{padding:20px;height:max-content}
.quiz-card{padding:30px}
.quiz-meta{display:flex;justify-content:space-between;align-items:center;gap:16px}
.quiz-title{font-size:34px;margin:24px 0}
.options{display:grid;gap:11px}
.option{
  width:100%;text-align:left;background:white;border:1px solid var(--line);
  border-radius:12px;padding:15px 16px;cursor:pointer;
}
.option:hover{border-color:#93a49d}
.option.selected{border-color:var(--green);background:var(--mint)}
.option.correct{border-color:var(--success);background:var(--success-bg)}
.option.wrong{border-color:var(--danger);background:var(--danger-bg)}
.feedback{margin-top:20px;border-radius:15px;padding:18px;border:1px solid var(--line)}
.feedback.good{background:var(--success-bg)}
.feedback.bad{background:var(--danger-bg)}
.feedback h3{font-family:Inter,sans-serif}
.source{margin-top:12px;padding:12px;border:1px solid var(--line);background:rgba(255,255,255,.65);border-radius:10px;font-size:14px}
.result-card{padding:34px;max-width:720px;margin:30px auto;text-align:center}
.score{font-family:Georgia,serif;font-size:64px}
.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}
.result-grid .stat{text-align:center}
.mistake-item{padding:16px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:var(--paper)}
.mobile-nav{display:none}

@media(max-width:800px){
  .topbar{height:62px;padding:0 16px}
  .desktop-nav{display:none}
  .user-pill{display:none}
  main{padding:20px 14px 92px}
  .hero{grid-template-columns:1fr;padding:24px}
  h1{font-size:40px}
  .hero p{font-size:17px}
  .hero-art{min-height:180px}
  .hero-symbol{font-size:68px}
  .cards{grid-template-columns:1fr}
  .course-title{display:block}
  .course-title h1{font-size:38px}
  .stat-row{grid-template-columns:1fr 1fr}
  .topic{grid-template-columns:40px 1fr 70px;gap:10px}
  .topic > .btn{display:none}
  .quiz-wrap{grid-template-columns:1fr}
  .side-panel{display:none}
  .quiz-card{padding:20px}
  .quiz-title{font-size:27px}
  .result-grid{grid-template-columns:1fr 1fr 1fr}
  .mobile-nav{
    position:fixed;bottom:0;left:0;right:0;height:70px;background:white;
    border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);z-index:30
  }
  .mobile-nav button{
    border:0;background:white;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    color:#45514c;font-size:11px
  }
  .mobile-nav span{font-size:20px}
}

.answer-input{width:100%;padding:15px 16px;border:1px solid var(--line);border-radius:12px;font:inherit;background:#fff;margin-bottom:10px}
.text-task{margin-top:22px}.match-list{display:grid;gap:12px;margin-top:22px}
.match-row{display:grid;grid-template-columns:minmax(180px,.8fr) 1.5fr;gap:14px;align-items:center;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff}
.match-row select{width:100%;padding:11px;border:1px solid var(--line);border-radius:9px;background:#fff}
.order-list{display:grid;gap:10px;margin-top:22px}.order-row{display:grid;grid-template-columns:34px 1fr auto;gap:12px;align-items:center;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff}
.order-num{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eef3ef;color:var(--green);font-weight:700}
.order-row button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 10px;margin-left:5px;cursor:pointer}.order-row button:disabled{opacity:.3}
@media(max-width:700px){.match-row{grid-template-columns:1fr}.order-row{grid-template-columns:30px 1fr auto}}

/* v5 – умный прогресс */
.recommendation{margin-top:18px;padding:14px 16px;border:1px solid #cbdad3;border-radius:12px;background:#edf4f0;color:#23473c}
.subtopic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.subtopic-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}
.subtopic-head{display:flex;align-items:start;justify-content:space-between;gap:12px}.subtopic-head h3{font-size:19px;margin:0 0 12px}.subtopic-head strong{color:var(--green)}
.subtopic-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:10px}.review-text{color:var(--danger);font-weight:700}
.status-badge{display:inline-block;margin:8px 0 18px;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
.status-new{background:#eef0ef;color:#69716e}.status-learning{background:#fff4d9;color:#735a12}.status-review{background:var(--danger-bg);color:var(--danger)}.status-mastered{background:var(--success-bg);color:var(--success)}
.learning-note{padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.55);font-weight:600}
.session-breakdown{display:grid;gap:8px;margin:22px auto;max-width:680px;text-align:left}.session-breakdown>div{display:flex;justify-content:space-between;gap:20px;padding:10px 12px;border-bottom:1px solid var(--line)}
.review-list{display:grid;gap:10px}.mistake-item{display:flex;justify-content:space-between;gap:18px;align-items:center}.mistake-item p{margin:7px 0}
.correct-pairs{display:grid;gap:6px;margin-top:8px}
@media(max-width:800px){.subtopic-grid{grid-template-columns:1fr}.mistake-item{align-items:flex-start;flex-direction:column}.session-breakdown>div{align-items:flex-start;flex-direction:column;gap:4px}}

/* v6.2 – визуально отделяем панель действий от списка ошибок */
.mistakes-actions-top {
  margin-top: 18px;
  margin-bottom: 34px;
}
@media (max-width: 800px) {
  .mistakes-actions-top {
    margin-bottom: 26px;
  }
}

/* v13.1 – optical centering for topic action buttons */
.topic > .btn{
  height:54px;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  line-height:1;
  box-sizing:border-box;
}


/* v14 – итоговый экзамен */
.exam-entry{margin-top:22px}.exam-banner{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:24px 28px;border:1px solid #cbdad3;border-radius:18px;background:#edf4f0}.exam-banner h2{margin:4px 0 6px}.exam-banner p{margin:0;color:var(--muted)}
.exam-intro{max-width:920px;margin:36px auto;background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:38px;box-shadow:var(--shadow)}.exam-intro h1{margin:8px 0 12px}.exam-lead{font-size:19px;max-width:720px;color:var(--muted)}.exam-rules{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.exam-rules>div{border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center;background:#fff}.exam-rules strong{display:block;font-family:Georgia,serif;font-size:30px;color:var(--green)}.exam-rules span{font-size:13px;color:var(--muted)}.exam-note{margin:18px 0 24px}.exam-note p{margin-bottom:0}.exam-mini{margin-top:18px;padding:12px;border-radius:10px;background:#f2f4f2;color:var(--muted);font-size:13px}.exam-verdict{display:inline-block;padding:9px 14px;border-radius:999px;font-weight:700}.exam-verdict.pass{background:var(--success-bg);color:var(--success)}.exam-verdict.fail{background:var(--danger-bg);color:var(--danger)}.exam-review{text-align:left;margin-top:34px}.exam-review>h2{text-align:center}.exam-review>p{text-align:center}.exam-review-item{margin:16px 0;padding:22px;border:1px solid var(--line);border-radius:16px;background:#fff}.exam-review-item h3{font-family:Georgia,serif;font-size:21px}.exam-topic-breakdown{margin-top:26px}
@media(max-width:800px){.exam-banner{align-items:flex-start;flex-direction:column}.exam-intro{padding:24px;margin:10px auto}.exam-rules{grid-template-columns:1fr 1fr}.exam-wrap .side-panel{display:none}.exam-review-item{padding:17px}}

/* v15 – профиль и аналитика */
.profile-hero{margin-bottom:28px}
.recommend-grid{display:grid;gap:14px}
.recommend-card{display:grid;grid-template-columns:42px 1fr auto;gap:16px;align-items:center;background:var(--paper);border:1px solid #d8dfda;border-radius:20px;padding:18px 20px;box-shadow:0 10px 28px rgba(28,48,39,.05)}
.recommend-card h3{margin:0 0 6px;font-size:20px}
.recommend-card p{margin:0 0 8px;color:#52615b}
.recommend-num{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#e6efeb;color:var(--green);font-weight:800}
.recommend-stats{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:#718078}
.profile-topic-table{background:var(--paper);border:1px solid #d8dfda;border-radius:20px;overflow:hidden}
.profile-topic-row{display:grid;grid-template-columns:minmax(270px,2.2fr) minmax(140px,1fr) 100px 100px 90px;gap:18px;align-items:center;padding:16px 20px;border-top:1px solid #e3e8e4}
.profile-topic-row:first-child{border-top:0}
.profile-topic-head{background:#f1f4f1;color:#67756e;text-transform:uppercase;letter-spacing:.08em;font-size:11px;font-weight:700}
.profile-topic-row small{display:block;margin-top:5px;color:#78847f;font-size:12px}
.progress.mini{height:6px;margin-top:7px}
.review-count{color:#8a4a2f;font-weight:800}
.exam-profile-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0}
.exam-history{background:var(--paper);border:1px solid #d8dfda;border-radius:18px;padding:18px 20px}
.exam-history h3{margin-top:0}
.exam-history-row{display:grid;grid-template-columns:1.2fr .8fr .7fr .9fr;gap:12px;padding:11px 0;border-top:1px solid #e7ebe8;align-items:center}
.exam-history-row:first-of-type{border-top:0}
.exam-history-status{font-weight:800;text-align:right}
.exam-history-status.pass{color:var(--green)}
.exam-history-status.fail{color:#a04a3a}
.feedback-roadmap .card{padding:26px}
.feedback-roadmap h2{margin:6px 0 8px}
.feedback-tags{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.feedback-tags span{padding:7px 10px;border-radius:999px;background:#eef2ef;border:1px solid #d9e1dc;font-size:13px;color:#52615b}
@media(max-width:800px){
  .recommend-card{grid-template-columns:36px 1fr}.recommend-card .btn{grid-column:1/-1;width:100%}
  .profile-topic-table{background:transparent;border:0;overflow:visible}
  .profile-topic-head{display:none}
  .profile-topic-row{grid-template-columns:1fr 1fr;gap:12px;background:var(--paper);border:1px solid #d8dfda;border-radius:16px;margin-bottom:12px;padding:16px}
  .profile-topic-row>div:first-child{grid-column:1/-1}
  .exam-profile-stats{grid-template-columns:1fr 1fr}
  .exam-history-row{grid-template-columns:1fr auto auto}.exam-history-status{grid-column:1/-1;text-align:left}
}

/* v15.2 – visual system rebuild */
:root{--ink:#10231d;--green:#0f3d2e;--green-2:#1b624d;--sage:#a7b8a7;--cream:#f8f6ee;--paper:#fffefa;--line:#dfe3dc;--muted:#66756f;--sand:#c9b89b;--shadow:0 18px 45px rgba(24,49,40,.07)}
body{background:linear-gradient(180deg,#faf8f2 0,#f7f4ec 100%);font-size:16px}
.topbar{height:78px;padding:0 max(28px,4vw);background:rgba(255,254,250,.94);border-color:#e4e5df}
.brand{height:64px;max-width:310px;overflow:hidden}
.brand-logo{display:block;width:285px;height:92px;object-fit:cover;object-position:center 58%;transform:scale(1.18);transform-origin:left center}
.desktop-nav{gap:20px}.desktop-nav button{font-size:15px;padding:12px 6px;position:relative}.desktop-nav button:hover:after{content:"";position:absolute;left:6px;right:6px;bottom:3px;height:2px;background:var(--green)}
main{max-width:1240px;padding:46px 26px 110px}
.eyebrow{font-size:11px;letter-spacing:.2em;color:#6e7e77}
h1{font-size:46px;line-height:1.06;letter-spacing:-.025em}h2{font-size:30px;line-height:1.15}h3{line-height:1.2}
.btn{border-radius:11px;padding:13px 18px;min-height:48px}.btn-primary{background:var(--green)}.btn-secondary{background:#fffefa}.text-link{border:0;background:transparent;color:var(--green);font-weight:750;padding:8px 0;cursor:pointer;font:inherit}.text-link:hover{text-decoration:underline}
.progress{height:7px;background:#e3e8e4}.progress-lg{height:9px}

.home-intro{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;padding:46px 0 56px;border-bottom:1px solid var(--line)}
.home-copy h1{font-size:54px;margin:12px 0 18px;max-width:700px}.home-copy p{font-size:19px;line-height:1.55;color:#485650;max-width:610px}.home-progress{padding:30px;border:1px solid var(--line);background:rgba(255,254,250,.72);border-radius:20px;box-shadow:var(--shadow)}
.home-progress-top{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:14px}.home-progress-top span{font-family:Georgia,serif;font-size:19px}.home-progress-top strong{font-size:26px;color:var(--green)}
.home-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:25px 0}.home-metrics div{padding:0 14px;border-left:1px solid var(--line)}.home-metrics div:first-child{border-left:0;padding-left:0}.home-metrics strong{display:block;font-family:Georgia,serif;font-size:25px}.home-metrics span{font-size:12px;color:var(--muted)}
.home-section{margin-top:38px}.subject-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.subject-feature{min-height:330px;padding:30px;border-radius:20px;background:linear-gradient(135deg,#0f3d2e,#1a5b48);color:#fff;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow)}.subject-feature .eyebrow,.subject-feature p,.subject-feature span{color:rgba(255,255,255,.75)}.subject-feature h3{font-size:34px;margin:8px 0}.subject-icon{font-family:Georgia,serif;font-size:58px;line-height:1}.subject-bottom>div:first-child{display:flex;justify-content:space-between;margin-bottom:8px}.subject-feature .progress{background:rgba(255,255,255,.2)}.subject-feature .progress span{background:#fff}.subject-feature .btn{margin-top:20px;background:#fff;color:var(--green);border-color:#fff}.coming-subjects{display:grid;gap:18px}.coming-subjects article{border:1px solid var(--line);border-radius:20px;background:rgba(255,254,250,.55);padding:28px;display:flex;flex-direction:column;justify-content:end;min-height:156px}.coming-subjects article>span{font-size:12px;color:#93a09a;letter-spacing:.16em}.coming-subjects h3{font-size:24px;margin:12px 0 4px;color:#727c77}.coming-subjects p{margin:0;color:#9aa29e}

.course-head{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:center;padding:18px 0 38px}.course-head h1{font-size:52px;margin:10px 0 12px}.course-head p{font-size:18px;color:var(--muted);max-width:650px}.course-summary{display:flex;align-items:center;gap:28px}.course-summary>div:not(.ring){padding-left:24px;border-left:1px solid var(--line)}.course-summary span{display:block;color:var(--muted);font-size:12px}.course-summary strong{font-size:24px;font-family:Georgia,serif}
.ring{--p:0;width:108px;height:108px;border-radius:50%;display:grid;place-items:center;align-content:center;background:radial-gradient(closest-side,#fffefa 78%,transparent 80% 100%),conic-gradient(var(--green) calc(var(--p)*1%),#e3e8e4 0)}.ring strong{font-family:Georgia,serif;font-size:25px;color:var(--green)}.ring span{font-size:11px;color:var(--muted)}
.exam-strip{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:22px 26px;border-radius:16px;background:#edf2ed;border:1px solid #d5e0d8}.exam-strip h3{font-family:Georgia,serif;font-size:23px;margin:4px 0}.exam-strip p{margin:0;color:var(--muted)}
.topic-list-new{border-top:1px solid var(--line)}.topic-list-new .topic{grid-template-columns:54px 1.8fr 1fr 48px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;padding:18px 4px}.topic-list-new .num{background:transparent;color:#8a9690;font-family:Georgia,serif;font-size:17px}.topic-name strong{font-family:Georgia,serif;font-size:19px}.topic-name small{display:block;margin-top:4px}.topic-progress{display:grid;grid-template-columns:1fr 42px;align-items:center;gap:10px}.topic-arrow{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fffefa;color:var(--green);cursor:pointer;font-size:20px}.topic-arrow:hover{background:var(--green);color:white}.topic-arrow:disabled{opacity:.35}

.module-head{padding:8px 0 28px}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:25px}.breadcrumbs span{margin:0 8px;color:#a0aaa5}.module-grid{display:grid;grid-template-columns:1fr 390px;gap:56px;align-items:center}.module-grid h1{font-size:43px;margin-bottom:13px}.module-grid>div>p{font-size:17px;line-height:1.55;color:var(--muted);max-width:730px}.module-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.module-actions .btn-primary{display:flex;flex-direction:column;align-items:flex-start}.module-actions .btn-primary small{font-weight:400;opacity:.78;margin-top:2px}.module-overview{display:flex;align-items:center;gap:24px;border-left:1px solid var(--line);padding-left:34px}.module-kpis{display:grid;gap:12px}.module-kpis div{display:flex;align-items:baseline;gap:8px}.module-kpis strong{font-family:Georgia,serif;font-size:24px}.module-kpis span{font-size:12px;color:var(--muted)}
.weak-card{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:20px 24px;border:1px solid #d4e0d8;border-radius:16px;background:linear-gradient(90deg,#eef4ef,#f8faf7)}.weak-card h3{font-size:21px;margin:5px 0}.weak-card p{margin:0;color:var(--muted)}
.section-head.compact{align-items:center}.section-head.compact>p{max-width:430px;text-align:right;font-size:13px}.subtopic-table{border-top:1px solid var(--line)}.subtopic-row{display:grid;grid-template-columns:45px minmax(270px,1.5fr) minmax(140px,.8fr) 50px 110px;gap:16px;align-items:center;padding:16px 4px;border-bottom:1px solid var(--line)}.subtopic-index{font-family:Georgia,serif;color:#89958f}.subtopic-row>strong{font-size:15px}.subtopic-pct{font-weight:700;color:var(--green)}.subtopic-state{font-size:11px;padding:6px 9px;border-radius:999px;background:#eef0ef;color:#727b77;text-align:center}.subtopic-state.learning{background:#eef4ef;color:var(--green)}.subtopic-state.needs-review{background:#f8e9e6;color:#9b4d3b}.subtopic-state.done{background:#e5f2e9;color:#24704f}

/* Bring the remaining product screens into the same calmer scale */
.quiz-card,.side-panel,.result-card,.exam-intro,.card{border-color:var(--line);box-shadow:0 12px 30px rgba(24,49,40,.055)}.quiz-title{font-size:30px;line-height:1.18}.score{font-size:56px}.course-hero{border-radius:18px;background:#fffefa}.course-title h1,.profile-hero h1{font-size:40px!important}.section{margin-top:40px}

@media(max-width:800px){
 .topbar{height:68px}.brand{max-width:220px;height:58px}.brand-logo{width:215px;height:76px;transform:scale(1.12)}
 main{padding-top:24px}.home-intro,.subject-layout,.course-head,.module-grid{grid-template-columns:1fr;gap:26px}.home-intro{padding:20px 0 34px}.home-copy h1{font-size:39px}.home-copy p{font-size:16px}.home-progress{padding:22px}.home-metrics{grid-template-columns:1fr 1fr;gap:18px}.home-metrics div{border-left:0;padding:0}.subject-feature{min-height:280px}.course-head h1{font-size:40px}.course-summary{justify-content:space-between;gap:12px}.course-summary>div:not(.ring){padding-left:12px}.ring{width:92px;height:92px}.exam-strip{align-items:flex-start;flex-direction:column}.topic-list-new .topic{grid-template-columns:42px 1fr 42px}.topic-progress{display:none}.module-grid h1{font-size:35px}.module-overview{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}.weak-card{align-items:flex-start;flex-direction:column}.section-head.compact{align-items:flex-start;flex-direction:column}.section-head.compact>p{text-align:left}.subtopic-row{grid-template-columns:34px 1fr 48px}.subtopic-row .progress,.subtopic-state{display:none}
}
\n\n/* v15.4 – homepage polish */\n.topbar{height:70px;padding-top:0;padding-bottom:0}\n.brand{height:58px;max-width:235px;overflow:hidden;display:flex;align-items:center}\n.brand-logo{width:225px;height:58px;object-fit:contain;object-position:left center;transform:none}\nmain{padding-top:36px}\n.home-intro{padding:34px 0 42px;gap:56px}\n.home-copy h1{font-size:43px;line-height:1.08;max-width:620px;margin:10px 0 16px}\n.home-copy p{font-size:18px;max-width:590px}\n.hero-actions{margin-top:22px}\n.home-section{margin-top:30px}\n.home-section .section-head{margin-bottom:18px}\n.home-section .section-head h2{font-size:28px}\n.home-progress{padding:27px}\n.btn-primary{font-weight:750}\n.hero-actions .btn-secondary{background:transparent;border-color:#789087}\n@media(max-width:800px){\n .topbar{height:62px}\n .brand{height:52px;max-width:180px}\n .brand-logo{width:175px;height:50px;object-fit:contain;transform:none}\n main{padding-top:20px}\n .home-intro{padding:16px 0 28px;gap:22px}\n .home-copy h1{font-size:34px;line-height:1.1}\n .home-copy p{font-size:16px}\n .home-section{margin-top:24px}\n}\n

/* v15.5 – compact horizontal header logo */
.topbar{height:70px;overflow:visible}
.brand{height:56px;max-width:330px;overflow:visible;display:flex;align-items:center;flex:0 0 auto}
.brand-logo{display:block;width:300px;height:46px;max-width:100%;object-fit:contain;object-position:left center;transform:none}
@media(max-width:1000px){
  .brand{max-width:270px}
  .brand-logo{width:250px;height:40px}
}
@media(max-width:800px){
  .topbar{height:62px}
  .brand{height:48px;max-width:210px}
  .brand-logo{width:205px;height:34px;object-fit:contain}
}

/* v15.6 – header logo readability and alignment */
@media (min-width:1229px){
  .topbar{
    padding-left:calc((100vw - 1180px)/2 + 24px);
    padding-right:calc((100vw - 1180px)/2 + 24px);
  }
}
.brand{
  height:60px;
  max-width:350px;
  overflow:visible;
}
.brand-logo{
  width:335px;
  height:52px;
  max-width:100%;
  object-fit:contain;
  object-position:left center;
}
@media (max-width:1228px) and (min-width:801px){
  .topbar{padding-left:24px;padding-right:24px}
  .brand{max-width:300px}
  .brand-logo{width:290px;height:46px}
}
@media (max-width:800px){
  .brand{height:50px;max-width:205px;overflow:visible}
  .brand-logo{width:200px;height:38px;object-fit:contain;object-position:left center}
}

/* v16 – subject and topic pages */
.course-head-v16{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(360px,.8fr);gap:54px;align-items:center;padding:28px 0 34px;border-bottom:1px solid var(--line)}
.course-head-v16 h1{font-size:44px;margin:9px 0 13px}.course-head-v16 .course-lead{font-size:18px;line-height:1.55;color:var(--muted);max-width:670px;margin:0}
.course-dashboard{padding:25px 27px;border:1px solid var(--line);border-radius:20px;background:rgba(255,254,250,.72);box-shadow:var(--shadow)}
.course-dashboard-top{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:13px}.course-dashboard-top span{font-family:Georgia,serif;font-size:18px}.course-dashboard-top strong{font-family:Georgia,serif;font-size:27px;color:var(--green)}
.course-dashboard-metrics{display:grid;grid-template-columns:repeat(3,1fr);margin-top:22px}.course-dashboard-metrics div{padding:0 16px;border-left:1px solid var(--line)}.course-dashboard-metrics div:first-child{border-left:0;padding-left:0}.course-dashboard-metrics strong{display:block;font-family:Georgia,serif;font-size:24px}.course-dashboard-metrics span{font-size:12px;color:var(--muted)}
.course-next{display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px;margin:28px 0 36px;padding:22px 25px;border-radius:18px;background:linear-gradient(105deg,#edf3ee,#f8faf6);border:1px solid #d5e0d8}.course-next h3{font-family:Georgia,serif;font-size:23px;margin:4px 0 5px}.course-next p{margin:0;color:var(--muted)}
.course-program-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:17px}.course-program-head h2{font-size:29px;margin:5px 0 0}.course-program-head p{margin:0;color:var(--muted);font-size:14px;max-width:400px;text-align:right}
.topic-list-v16{border-top:1px solid var(--line)}.topic-card-v16{display:grid;grid-template-columns:48px minmax(280px,1.5fr) minmax(180px,.7fr) 44px;gap:18px;align-items:center;padding:19px 5px;border-bottom:1px solid var(--line)}.topic-card-v16 .topic-no{font-family:Georgia,serif;color:#87948e;font-size:16px}.topic-card-v16 .topic-copy strong{font-family:Georgia,serif;font-size:19px;display:block}.topic-card-v16 .topic-copy small{display:block;color:var(--muted);margin-top:5px}.topic-card-v16 .topic-stat{display:grid;grid-template-columns:1fr 42px;gap:10px;align-items:center}.topic-card-v16 .topic-stat small{font-weight:750;color:var(--green);text-align:right}.topic-card-v16.locked{opacity:.48}.topic-card-v16.locked .topic-stat{display:block;color:var(--muted);font-size:13px}.topic-card-v16 .topic-arrow{justify-self:end;display:grid;place-items:center;padding:0;line-height:1}.topic-card-v16 .topic-arrow span{display:block;line-height:1;transform:translateY(-1px)}.topic-card-v16.is-clickable{cursor:pointer;transition:background .16s ease}.topic-card-v16.is-clickable:hover{background:rgba(15,75,58,.035)}.topic-card-v16.is-clickable:focus-visible{outline:2px solid rgba(15,75,58,.32);outline-offset:-2px}.topic-card-v16.is-clickable:hover .topic-copy strong{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}

.module-head-v16{padding:8px 0 0}.module-head-v16 .breadcrumbs{margin-bottom:20px}.module-hero-v16{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(330px,.75fr);gap:52px;align-items:center;padding-bottom:32px;border-bottom:1px solid var(--line)}.module-hero-v16 h1{font-size:39px;line-height:1.08;margin:8px 0 13px;max-width:780px}.module-hero-v16 .module-description{font-size:17px;line-height:1.55;color:var(--muted);max-width:740px;margin:0}.module-actions-v16{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.module-actions-v16 .btn-primary{display:flex;flex-direction:column;align-items:flex-start}.module-actions-v16 .btn-primary small{font-weight:400;opacity:.78;margin-top:2px}.module-actions-v16 .text-link{padding-left:8px;padding-right:8px}
.module-dashboard-v16{padding:24px 26px;border:1px solid var(--line);border-radius:20px;background:rgba(255,254,250,.74);box-shadow:var(--shadow)}.module-dashboard-top{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:12px}.module-dashboard-top span{font-family:Georgia,serif;font-size:18px}.module-dashboard-top strong{font-family:Georgia,serif;font-size:28px;color:var(--green)}.module-dashboard-kpis{display:grid;grid-template-columns:repeat(3,1fr);margin-top:21px}.module-dashboard-kpis div{padding:0 12px;border-left:1px solid var(--line)}.module-dashboard-kpis div:first-child{padding-left:0;border-left:0}.module-dashboard-kpis strong{display:block;font-family:Georgia,serif;font-size:23px}.module-dashboard-kpis span{font-size:11px;color:var(--muted)}
.topic-next-v16{display:grid;grid-template-columns:1fr auto;align-items:center;gap:28px;margin:26px 0 38px;padding:21px 24px;border-radius:17px;background:linear-gradient(100deg,#eef4ef,#f9faf7);border:1px solid #d4e0d8}.topic-next-v16 h3{font-family:Georgia,serif;font-size:21px;margin:4px 0 5px}.topic-next-v16 p{margin:0;color:var(--muted)}
.subtopic-section-v16{margin-top:0}.subtopic-heading-v16{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:15px}.subtopic-heading-v16 h2{font-size:28px;margin:5px 0 0}.subtopic-heading-v16 p{max-width:410px;text-align:right;margin:0;color:var(--muted);font-size:13px}.subtopic-table-v16{border-top:1px solid var(--line)}.subtopic-row-v16{display:grid;grid-template-columns:40px minmax(260px,1.4fr) minmax(150px,.7fr) 48px 112px;gap:16px;align-items:center;padding:16px 4px;border-bottom:1px solid var(--line)}.subtopic-row-v16 .subtopic-index{font-size:14px}.subtopic-row-v16>strong{font-size:15px}.subtopic-row-v16 .subtopic-pct{font-size:14px}

@media(max-width:800px){
 .course-head-v16,.module-hero-v16{grid-template-columns:1fr;gap:24px}.course-head-v16{padding:12px 0 26px}.course-head-v16 h1{font-size:36px}.course-dashboard,.module-dashboard-v16{padding:20px}.course-next,.topic-next-v16{grid-template-columns:1fr;align-items:start}.course-program-head,.subtopic-heading-v16{align-items:flex-start;flex-direction:column}.course-program-head p,.subtopic-heading-v16 p{text-align:left}.topic-card-v16{grid-template-columns:38px 1fr 40px}.topic-card-v16 .topic-stat{display:none}.module-hero-v16 h1{font-size:33px}.subtopic-row-v16{grid-template-columns:32px 1fr 45px}.subtopic-row-v16 .progress,.subtopic-row-v16 .subtopic-state{display:none}.module-actions-v16 .btn{width:100%}.module-actions-v16 .text-link{width:auto}
}

/* v16.0.2: clickable breadcrumbs */
.breadcrumb-link{
  appearance:none;
  border:0;
  background:transparent;
  padding:0;
  margin:0;
  font:inherit;
  color:inherit;
  cursor:pointer;
  text-decoration:none;
}
.breadcrumb-link:hover,
.breadcrumb-link:focus-visible{
  color:var(--green);
  text-decoration:underline;
  text-underline-offset:3px;
}

/* v16.1 – training and mistakes */
.training-shell-v161{max-width:980px;margin:26px auto 70px}.training-top-v161{display:grid;grid-template-columns:150px 1fr 90px;align-items:center;gap:20px}.training-back-v161,.report-link-v161{border:0;background:transparent;color:var(--green);font:inherit;cursor:pointer;padding:8px 0;text-align:left}.training-back-v161:hover,.report-link-v161:hover{text-decoration:underline;text-underline-offset:3px}.training-context-v161{text-align:center}.training-context-v161 span{display:block;color:var(--muted);font-size:13px}.training-context-v161 strong{font-family:Georgia,serif;font-size:17px}.training-counter-v161{text-align:right;color:var(--muted)}.training-counter-v161 strong{font-family:Georgia,serif;font-size:25px;color:var(--ink)}.training-progress-v161{height:6px;background:#dfe6e1;border-radius:999px;overflow:hidden;margin:14px 0 24px}.training-progress-v161 span{display:block;height:100%;background:var(--green);border-radius:999px}.training-card-v161{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:34px 38px 32px;box-shadow:var(--shadow)}.training-meta-v161{display:flex;justify-content:space-between;align-items:center;gap:20px}.training-meta-v161>div{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.training-type-v161{font-size:13px;color:var(--muted)}.report-link-v161{font-size:13px;color:var(--muted);white-space:nowrap}.training-question-v161{font-family:Georgia,serif;font-size:34px;line-height:1.15;margin:28px 0 26px;max-width:850px}.training-actions-v161{display:flex;justify-content:flex-end;align-items:center;gap:16px;margin-top:25px}.training-actions-v161 .btn-primary{min-width:170px}.report-after-v161{margin-right:auto}.training-hint-v161{text-align:center;color:var(--muted);font-size:12px;margin-top:16px}.training-card-v161 .feedback{margin-top:28px;border-radius:16px}.training-card-v161 .option{border-radius:13px;padding:17px 18px;margin-bottom:10px}
.mistakes-page-v161{margin:18px 0 70px}.mistakes-hero-v161{display:grid;grid-template-columns:1fr 180px;gap:45px;align-items:end;padding:18px 0 28px;border-bottom:1px solid var(--line)}.mistakes-hero-v161 h1{font-size:42px;margin:6px 0 10px}.mistakes-hero-v161 p{color:var(--muted);max-width:700px;margin:0;line-height:1.55}.mistakes-summary-v161{text-align:right}.mistakes-summary-v161 strong{display:block;font-family:Georgia,serif;font-size:44px;color:var(--green);line-height:1}.mistakes-summary-v161 span,.mistakes-summary-v161 small{display:block;color:var(--muted);margin-top:5px}.mistakes-toolbar-v161{display:flex;gap:10px;align-items:center;padding:22px 0}.text-danger-v161{margin-left:auto;border:0;background:transparent;color:#9a5149;cursor:pointer;font:inherit;font-size:13px}.mistakes-list-v161{border-top:1px solid var(--line)}.mistake-row-v161{display:grid;grid-template-columns:42px 1fr 115px;gap:22px;align-items:start;padding:22px 4px;border-bottom:1px solid var(--line)}.mistake-no-v161{font-family:Georgia,serif;color:#91a099;padding-top:3px}.mistake-path-v161{font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}.mistake-copy-v161 h3{font-family:Georgia,serif;font-size:18px;line-height:1.35;margin:7px 0 12px}.mistake-metrics-v161{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:12px}.mistake-metrics-v161 strong{color:var(--ink)}.mistake-side-v161{display:flex;align-items:center;justify-content:flex-end;gap:8px}.report-icon-v161{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;background:var(--paper);color:var(--muted);cursor:pointer}.mistakes-empty-v161{text-align:center;padding:70px 20px}.mistakes-empty-mark-v161{width:58px;height:58px;display:grid;place-items:center;margin:0 auto 16px;border-radius:50%;background:#e8f1eb;color:var(--green);font-size:25px}.mistakes-empty-v161 h2{font-size:28px;margin:0 0 8px}.mistakes-empty-v161 p{color:var(--muted);max-width:520px;margin:0 auto 22px}
.report-overlay-v161{position:fixed;inset:0;background:rgba(13,28,23,.36);display:grid;place-items:center;padding:20px;z-index:9999}.report-modal-v161{position:relative;width:min(620px,100%);max-height:90vh;overflow:auto;background:var(--paper);border-radius:22px;padding:30px;box-shadow:0 24px 70px rgba(0,0,0,.22)}.report-modal-v161 h2{font-size:28px;margin:6px 0 12px}.report-question-v161{padding:13px 15px;background:#f2f4f1;border-radius:12px;line-height:1.4;font-size:14px}.report-modal-v161 label{display:block;font-weight:700;font-size:13px;margin:17px 0 7px}.report-modal-v161 select,.report-modal-v161 textarea{width:100%;box-sizing:border-box;border:1px solid var(--line);border-radius:11px;background:white;padding:12px;font:inherit}.report-modal-v161 textarea{resize:vertical}.report-close-v161{position:absolute;right:18px;top:15px;border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer}.report-note-v161{font-size:12px;color:var(--muted);line-height:1.45;margin-top:13px}.report-success-v161{text-align:center;padding:20px}.report-success-v161>div{font-size:40px;color:var(--green)}.report-success-v161 h2{margin-top:8px}
@media(max-width:800px){.training-shell-v161{margin-top:10px}.training-top-v161{grid-template-columns:90px 1fr 60px;gap:8px}.training-context-v161 strong{font-size:14px}.training-card-v161{padding:24px 18px;border-radius:18px}.training-question-v161{font-size:27px}.training-meta-v161{align-items:flex-start}.training-actions-v161{flex-direction:column-reverse;align-items:stretch}.training-actions-v161 .btn,.report-after-v161{width:100%;text-align:center}.mistakes-hero-v161{grid-template-columns:1fr 100px;gap:20px}.mistakes-hero-v161 h1{font-size:35px}.mistakes-summary-v161 strong{font-size:36px}.mistakes-toolbar-v161{flex-wrap:wrap}.text-danger-v161{margin-left:0;width:100%;text-align:left}.mistake-row-v161{grid-template-columns:30px 1fr}.mistake-side-v161{grid-column:2;justify-content:flex-start}.mistake-metrics-v161{gap:10px 16px}.report-modal-v161{padding:25px 18px}}


/* v16.1.1 – more compact question typography */
.training-question-v161{
  font-size:27px;
  line-height:1.22;
  margin:24px 0 22px;
  max-width:900px;
}
.training-question-v161.is-long{
  font-size:24px;
  line-height:1.24;
}
.training-question-v161.is-very-long{
  font-size:22px;
  line-height:1.26;
}
@media(max-width:800px){
  .training-question-v161{font-size:24px;line-height:1.24;margin:21px 0 20px}
  .training-question-v161.is-long{font-size:22px}
  .training-question-v161.is-very-long{font-size:20px}
}

/* v16.2 — итоговый экзамен */
.exam-intro-v162{max-width:900px}.exam-intro-v162 h1{font-size:42px}.exam-note-v162{margin:22px 0;padding:18px 20px;border-left:3px solid var(--green);background:#f2f5f2;border-radius:0 12px 12px 0}.exam-note-v162 p{margin:6px 0 0;color:var(--muted)}.exam-last-v162{display:flex;justify-content:space-between;gap:20px;padding:14px 0 4px;color:var(--muted)}.exam-last-v162 strong{color:var(--ink)}
.exam-shell-v162{max-width:1120px;margin:38px auto 60px}.exam-top-v162{display:grid;grid-template-columns:180px 1fr 180px;align-items:center;gap:20px}.exam-exit-v162{justify-self:start;border:0;background:transparent;color:var(--green);font:inherit;cursor:pointer;padding:8px 0}.exam-context-v162{text-align:center}.exam-context-v162 span{display:block;font-size:13px;color:var(--muted);margin-bottom:3px}.exam-context-v162 strong{font-family:Georgia,serif;font-size:19px}.exam-counter-v162{justify-self:end;display:flex;align-items:baseline;gap:5px;color:var(--muted)}.exam-counter-v162 strong{font-family:Georgia,serif;font-size:25px;color:var(--ink)}.exam-progress-v162{height:6px;border-radius:999px;background:#dfe7e2;margin:14px 0 26px;overflow:hidden}.exam-progress-v162 span{display:block;height:100%;background:var(--green);border-radius:inherit}.exam-question-card-v162{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:36px 42px;box-shadow:0 14px 36px rgba(24,49,40,.06)}.exam-question-meta-v162{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:24px}.exam-question-meta-v162>div{display:flex;gap:8px;color:var(--muted);font-size:14px}.exam-question-title-v162{font-family:Georgia,serif;font-size:30px;line-height:1.18;margin:0 0 26px;max-width:980px}.exam-question-title-v162.is-long{font-size:27px}.exam-question-title-v162.is-very-long{font-size:24px;line-height:1.22}.exam-options-v162 .option{padding:15px 18px}.exam-actions-v162{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:26px}.exam-actions-v162>span{font-size:13px;color:var(--muted)}
.exam-result-v162{max-width:1120px;margin:34px auto 70px}.exam-result-hero-v162{display:grid;grid-template-columns:1fr 230px;gap:38px;align-items:center;padding:32px 36px;background:var(--paper);border:1px solid var(--line);border-radius:20px}.exam-result-hero-v162 h1{font-size:38px;margin:7px 0 10px}.exam-result-hero-v162 p{margin:0;color:var(--muted);max-width:680px}.exam-score-v162{text-align:center;border-left:1px solid var(--line)}.exam-score-v162>strong{display:block;font-family:Georgia,serif;font-size:54px;color:var(--green);line-height:1}.exam-score-v162>span{display:block;margin:7px 0 10px;color:var(--muted)}.exam-score-v162 em{display:inline-block;font-style:normal;font-weight:800;padding:6px 11px;border-radius:999px}.exam-score-v162 em.pass{background:var(--success-bg);color:var(--success)}.exam-score-v162 em.fail{background:var(--danger-bg);color:var(--danger)}.exam-topic-grid-v162{margin-top:22px;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:8px 24px}.exam-topic-row-v162{display:grid;grid-template-columns:minmax(260px,1fr) 1fr 55px;gap:22px;align-items:center;padding:14px 0;border-top:1px solid #e7ebe8}.exam-topic-row-v162:first-child{border-top:0}.exam-topic-row-v162>div:first-child{display:flex;justify-content:space-between;gap:12px}.exam-topic-row-v162>div:first-child span{color:var(--muted)}.exam-topic-row-v162>b{text-align:right}.exam-weak-v162{margin-top:18px;padding:18px 22px;border:1px solid #cadbd2;background:#edf4f0;border-radius:16px;display:flex;align-items:center;gap:12px}.exam-weak-v162>span{color:var(--muted)}.exam-weak-v162 .btn{margin-left:auto}.exam-perfect-v162{justify-content:center}.exam-full-review-v162{margin-top:42px}.exam-review-head-v162{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:16px}.exam-review-head-v162 h2{margin:4px 0 0}.exam-review-head-v162 p{max-width:430px;text-align:right;color:var(--muted);margin:0}.exam-review-item-v162{background:var(--paper);border:1px solid var(--line);border-radius:14px;margin:10px 0;overflow:hidden}.exam-review-item-v162.is-wrong{border-color:#e6cfc9}.exam-review-item-v162 summary{list-style:none;display:grid;grid-template-columns:44px 1fr 34px;gap:14px;align-items:start;padding:17px 19px;cursor:pointer}.exam-review-item-v162 summary::-webkit-details-marker{display:none}.exam-review-no-v162{font-family:Georgia,serif;color:#8b9a93}.exam-review-summary-v162 small{display:block;color:var(--muted);margin-bottom:4px}.exam-review-summary-v162 strong{font-family:Georgia,serif;font-size:18px;line-height:1.3}.exam-review-mark-v162{font-size:20px;text-align:center;color:var(--green)}.is-wrong .exam-review-mark-v162{color:#a04a3a}.exam-review-body-v162{padding:0 68px 20px;border-top:1px solid #edf0ee}.exam-review-body-v162 p{line-height:1.55}.exam-result-actions-v162{justify-content:center;margin-top:28px}
@media(max-width:800px){.exam-intro-v162 h1{font-size:34px}.exam-top-v162{grid-template-columns:auto 1fr auto;gap:10px}.exam-context-v162 strong{font-size:15px}.exam-context-v162 span{display:none}.exam-counter-v162{font-size:13px}.exam-question-card-v162{padding:24px 18px}.exam-question-title-v162,.exam-question-title-v162.is-long{font-size:24px}.exam-question-title-v162.is-very-long{font-size:21px}.exam-question-meta-v162{align-items:flex-start}.exam-question-meta-v162>div{display:none}.exam-actions-v162{align-items:stretch;flex-direction:column}.exam-actions-v162 .btn{width:100%}.exam-result-hero-v162{grid-template-columns:1fr;padding:25px 20px}.exam-result-hero-v162 h1{font-size:32px}.exam-score-v162{border-left:0;border-top:1px solid var(--line);padding-top:20px}.exam-topic-grid-v162{padding:8px 16px}.exam-topic-row-v162{grid-template-columns:1fr 46px;gap:10px}.exam-topic-row-v162>.progress{grid-column:1/-1;grid-row:2}.exam-topic-row-v162>div:first-child{display:block}.exam-topic-row-v162>div:first-child span{display:block;margin-top:3px}.exam-weak-v162{align-items:flex-start;flex-direction:column}.exam-weak-v162 .btn{margin-left:0;width:100%}.exam-review-head-v162{align-items:flex-start;flex-direction:column}.exam-review-head-v162 p{text-align:left}.exam-review-item-v162 summary{grid-template-columns:34px 1fr 26px;padding:15px 12px}.exam-review-summary-v162 strong{font-size:16px}.exam-review-body-v162{padding:0 16px 18px}.exam-result-actions-v162 .btn{width:100%}}

/* v16.3 – clear review stages and responsive mistake list */
.mistakes-page-v163 .mistakes-hero-v161 h1{font-size:38px}
.review-guide-v163{margin-top:24px;padding:18px 22px;background:#edf3ee;border-left:3px solid var(--green);border-radius:0 10px 10px 0}
.review-guide-v163 p{margin:6px 0 0;color:var(--muted);line-height:1.55;max-width:850px;font-size:14px}
.mistakes-page-v163 .mistakes-toolbar-v161{justify-content:space-between;align-items:end;gap:20px}
.review-filter-v163{display:grid;gap:7px;font-size:13px;color:var(--muted);max-width:560px;min-width:0;flex:1}
.review-filter-v163 select{width:100%;min-width:0;min-height:48px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);font:inherit}
.review-list-heading-v163{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin:12px 0 16px}
.review-list-heading-v163 h2{font-size:23px;margin:0}.review-list-heading-v163 p{font-size:12px;color:var(--muted);margin:0;max-width:420px}
.mistakes-page-v163 .mistake-row-v161{grid-template-columns:32px minmax(0,1fr) 180px}
.mistakes-page-v163 .mistake-side-v161{flex-direction:column;align-items:flex-end;gap:12px}
.mistakes-page-v163 .status-badge{margin:0;white-space:nowrap}
.mistakes-page-v163 .mistake-path-v161{text-transform:none;letter-spacing:0;line-height:1.5}
.mistakes-page-v163 .mistake-copy-v161 h3{line-height:1.45;overflow-wrap:anywhere}
.review-reason-v163{font-size:13px;line-height:1.55;color:var(--muted);margin:14px 0 8px}
.review-steps-v163{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.review-steps-v163>span{height:6px;width:30px;border-radius:4px;background:#dce3dd}
.review-steps-v163>span.is-done{background:var(--green)}
.review-steps-v163 small{font-size:12px;margin-left:6px;color:var(--muted)}
.review-settings-v163{border-top:1px solid var(--line);padding-top:18px;margin-top:40px;color:var(--muted);font-size:13px}
.review-settings-v163 summary{cursor:pointer;width:fit-content;padding:10px 0}
.review-settings-v163 .text-danger-v161{margin:0;padding:10px 0;min-height:44px}
.review-result-v163 h1{font-size:30px;margin-top:12px}
.review-result-v163>p{line-height:1.55}
.review-result-counts-v163{display:grid;grid-template-columns:1fr 1fr;border-block:1px solid var(--line);margin:24px 0;padding:20px 0;gap:18px}
.review-result-counts-v163 strong{display:block;font:28px Georgia,serif;color:var(--green)}
.review-result-counts-v163 span{display:block;color:var(--muted);font-size:13px;margin-top:6px}
.mistakes-page-v163 button:disabled{opacity:.5;cursor:default;transform:none}
.mistakes-page-v163 :is(button,select,summary):focus-visible{outline:2px solid var(--green);outline-offset:3px}
@media(max-width:800px){
 .mistakes-page-v163 .mistakes-hero-v161{grid-template-columns:minmax(0,1fr) 84px;gap:14px;align-items:start}
 .mistakes-page-v163 .mistakes-hero-v161 h1{font-size:30px}
 .mistakes-page-v163 .mistakes-hero-v161 p{font-size:14px}
 .mistakes-page-v163 .mistakes-summary-v161 span{font-size:12px}
 .review-guide-v163{padding:15px 16px}
 .mistakes-page-v163 .mistakes-toolbar-v161{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
 .review-filter-v163{max-width:none}
 .review-list-heading-v163{display:block}
 .review-list-heading-v163 p{margin-top:8px;line-height:1.5}
 .mistakes-page-v163 .mistake-row-v161{grid-template-columns:minmax(0,1fr);gap:12px;padding:22px 0}
 .mistakes-page-v163 .mistake-no-v161{display:none}
 .mistakes-page-v163 .mistake-side-v161{grid-column:1;grid-row:1;flex-direction:row;align-items:center;justify-content:space-between;gap:8px}
 .mistakes-page-v163 .mistake-side-v161 .report-link-v161{font-size:11px;min-height:44px;text-align:right}
 .mistakes-page-v163 .mistakes-empty-v161{padding:38px 0}
 .mistakes-page-v163 .mistakes-empty-v161 h2{font-size:25px}
 .review-result-v163{padding:24px 18px}.review-result-v163 h1{font-size:27px}
 .review-result-v163 .actions .btn{width:100%}
}

/* v17 – profile and learning analytics */
.profile-v17{margin:12px 0 30px}
.profile-heading-v17{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:25px}
.profile-heading-v17 h1{font-size:38px;margin:8px 0 0}
.profile-heading-v17>p{max-width:340px;margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.profile-overview-v17{display:grid;grid-template-columns:1fr 1.35fr;gap:40px;padding:24px 28px;border:1px solid var(--line);border-radius:16px;background:var(--paper)}
.profile-progress-v17>div:first-child{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px}
.profile-progress-v17 strong{font:30px Georgia,serif;color:var(--green)}
.profile-progress-v17 p{margin:10px 0 0;color:var(--muted);font-size:13px}
.profile-counts-v17,.profile-exam-summary-v17{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:0;align-items:center}
.profile-counts-v17>div{display:flex;flex-direction:column-reverse;gap:7px}
.profile-v17 dt{font-size:12px;color:var(--muted)}
.profile-v17 dd{margin:0;font:26px Georgia,serif;color:var(--green)}
.profile-next-v17{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;background:#edf3ee;border:1px solid #d5e0d8;border-radius:14px;margin-top:20px;padding:22px 26px}
.profile-next-v17 h2{font-size:24px;line-height:1.25;margin:6px 0 8px}
.profile-next-v17 p{font-size:14px;line-height:1.5;color:var(--muted);margin:0;max-width:760px}
.profile-context-v17{display:flex;align-items:start;justify-content:space-between;gap:30px;margin-top:20px;font-size:13px;color:var(--muted)}
.profile-context-v17>p{margin:0;flex:1}.profile-context-v17>p strong{display:block;color:var(--ink);font-weight:600;margin-bottom:5px}
.profile-context-v17 details{max-width:540px;flex:1}
.profile-v17 summary{cursor:pointer;line-height:1.5}
.profile-context-v17 summary{text-align:right}
.profile-context-v17 details p,.profile-method-v17 p{line-height:1.6}
.profile-section-v17{margin-top:38px}
.profile-section-head-v17{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:14px}
.profile-section-head-v17 h2{font-size:27px;margin:0}.profile-section-head-v17 p{font-size:13px;color:var(--muted);margin:0}
.profile-topics-v17{border-top:1px solid var(--line)}
.profile-topic-v17{display:grid;grid-template-columns:minmax(0,2fr) minmax(120px,.75fr) 90px 150px;align-items:center;gap:24px;padding:16px 0;border-bottom:1px solid var(--line)}
.profile-topic-open-v17{display:grid;grid-template-columns:27px minmax(0,1fr) 24px;gap:14px;align-items:center;text-align:left;border:0;background:transparent;cursor:pointer;padding:8px 0;min-height:60px;color:var(--ink)}
.profile-topic-open-v17 strong{font:18px/1.35 Georgia,serif}.profile-topic-open-v17 small{display:block;margin-top:5px;font-size:12px;color:var(--muted)}
.profile-topic-open-v17:hover strong{text-decoration:underline;text-underline-offset:4px}
.profile-topic-number-v17{color:var(--muted);font:14px Georgia,serif}
.profile-topic-open-v17>span:last-child{display:grid;place-items:center;color:var(--green);font-size:22px}
.profile-topic-progress-v17>div:first-child{display:flex;justify-content:space-between;gap:12px;margin-bottom:8px;font-size:13px}
.profile-topic-progress-v17 span,.profile-topic-accuracy-v17>span{color:var(--muted);font-size:12px}
.profile-topic-accuracy-v17 strong{display:block;margin-top:5px;font-size:13px}
.profile-topic-review-v17 button{border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--green);padding:10px;min-height:44px;cursor:pointer;font-size:12px;width:100%}
.profile-topic-review-v17>span{font-size:12px;color:var(--muted)}
.profile-weak-list-v17 article{display:flex;justify-content:space-between;align-items:center;gap:24px;border-top:1px solid var(--line);padding:20px 0}
.profile-weak-list-v17 h3{font-size:21px;margin:7px 0}
.profile-weak-list-v17 p{font-size:13px;line-height:1.6;color:var(--muted);margin:0}
.profile-weak-list-v17 .btn{flex-shrink:0}
.profile-empty-v17{padding:20px 0;margin:0;border-top:1px solid var(--line);color:var(--muted);line-height:1.6;font-size:14px}
.profile-method-v17{font-size:13px;color:var(--muted);margin-top:8px}
.profile-exam-summary-v17{grid-template-columns:repeat(3,1fr);padding:22px 24px;background:var(--paper);border:1px solid var(--line);border-radius:14px;margin-bottom:16px}
.profile-exam-summary-v17 dd{margin-top:8px}
.profile-history-caption-v17{color:var(--muted);font-size:12px;line-height:1.5}
.profile-history-v17 details{border-bottom:1px solid var(--line)}
.profile-history-v17 summary{display:grid;grid-template-columns:1fr 150px 110px;align-items:center;gap:16px;padding:16px 4px;font-size:14px}
.profile-history-v17 summary::after{content:'+';grid-column:4;color:var(--green)}
.profile-history-v17 details[open]>summary::after{content:'−'}
.profile-history-topics-v17{background:var(--paper);padding:8px 18px;margin-bottom:14px}
.profile-history-topics-v17>div{display:flex;justify-content:space-between;gap:18px;padding:10px 0;font-size:13px;border-bottom:1px solid var(--line)}
.profile-history-topics-v17 strong{white-space:nowrap}
.profile-pass-v17{color:var(--green)}.profile-fail-v17{color:#9a493d}
.profile-footer-v17{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:20px;margin-top:32px;color:var(--muted);font-size:12px}
.profile-v17 :is(button,summary):focus-visible{outline:2px solid var(--green);outline-offset:3px}
@media(max-width:800px){
 .profile-v17{margin-top:0}
 .profile-heading-v17{display:block;margin-bottom:18px}.profile-heading-v17 h1{font-size:30px}.profile-heading-v17>p{margin-top:10px}
 .profile-overview-v17{grid-template-columns:1fr;gap:18px;padding:18px}
 .profile-counts-v17{gap:10px}.profile-counts-v17 dt{font-size:11px}.profile-counts-v17 dd{font-size:23px}
 .profile-next-v17{grid-template-columns:1fr;gap:16px;padding:18px}.profile-next-v17 h2{font-size:22px}.profile-next-v17 .btn{width:100%}
 .profile-context-v17{display:block}.profile-context-v17 details{margin-top:14px}.profile-context-v17 summary{text-align:left}
 .profile-section-v17{margin-top:30px}.profile-section-head-v17{display:block}.profile-section-head-v17 h2{font-size:25px}.profile-section-head-v17 p{margin-top:7px}
 .profile-topic-v17{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px 20px;padding:14px 0 18px}
 .profile-topic-open-v17{grid-column:1/-1;gap:10px}.profile-topic-open-v17 strong{font-size:17px}
 .profile-topic-review-v17{grid-column:1/-1}.profile-topic-review-v17 button{width:auto;padding-inline:16px}
 .profile-topic-accuracy-v17{text-align:right}.profile-topic-review-v17>span{font-size:11px}
 .profile-weak-list-v17 article{display:block}.profile-weak-list-v17 .btn{margin-top:14px;width:100%}
 .profile-exam-summary-v17{padding:18px 14px;gap:12px;align-items:start}.profile-exam-summary-v17 dt{font-size:11px;min-height:30px}.profile-exam-summary-v17 dd{font-size:24px}
 .profile-history-v17 summary{grid-template-columns:1fr auto;gap:6px 12px;font-size:13px}
 .profile-history-v17 summary>span:first-child{grid-column:1/-1}
 .profile-history-v17 summary::after{display:none}
 .profile-history-v17 summary>span:last-child{text-align:right}
 .profile-history-topics-v17{padding:8px 12px}.profile-history-topics-v17>div{display:block;line-height:1.5}.profile-history-topics-v17 strong{display:block;margin-top:4px}
 .profile-footer-v17{flex-direction:column;gap:8px}
}

/* v17.1 – progress backup controls */
.profile-backup{border-top:1px solid var(--line);padding-top:24px}.profile-backup h2{font-size:25px;margin:0 0 10px}.profile-backup p{font-size:14px;line-height:1.6;color:var(--muted)}.profile-backup .actions{margin:16px 0 8px}.profile-backup #backup-preview:empty{display:none}.profile-backup #backup-preview{padding:16px;background:#edf3ee;border-radius:12px}.profile-backup .text-link{text-align:left;font-size:13px}
@media(max-width:800px){.profile-backup .actions .btn,.profile-backup #backup-preview .btn{width:100%}}

/* v18 – accounts and editor, using the established palette */
.account-header-button{border:0;background:transparent;padding:4px 0;color:var(--green);cursor:pointer;font-weight:600;max-width:160px;overflow:hidden;text-overflow:ellipsis}
.account-card{max-width:540px;margin:24px auto;padding:28px;background:var(--paper);border:1px solid var(--line);border-radius:16px}
.account-card h1{font-size:32px;margin:8px 0 16px}.account-card p{color:var(--muted);line-height:1.6}
.account-card form{display:grid;gap:10px;margin:20px 0}.account-card label{font-size:14px;font-weight:600}
.account-card input,.admin-v18 input:not([type=checkbox]),.admin-v18 select,.admin-v18 textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;background:white;font:inherit;color:var(--ink);min-width:0}
.account-card .text-link{display:block;margin-top:10px}.account-card small{color:var(--muted);font-size:12px}
.account-card [role=alert]{color:var(--danger);margin:0}
.account-note{background:#edf3ee;border-left:3px solid var(--green);padding:14px;margin:16px 0;border-radius:0 10px 10px 0}
.account-note .btn{margin:5px}
.account-settings h2,.admin-v18 h2{font-size:26px}.account-settings p{line-height:1.6;color:var(--muted)}
.account-settings a.btn{text-decoration:none}
.account-reports h1,.admin-v18 h1{font-size:34px}
.account-reports article,.admin-report{border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:20px;margin:16px 0}
.account-reports h2{font-size:21px}.account-reports p{line-height:1.5;color:var(--muted)}
.admin-v18 section{margin:32px 0}.admin-v18 label{display:block;margin:16px 0 6px;font-size:14px}
.admin-v18 textarea{resize:vertical}.admin-v18 blockquote{margin:12px 0;padding:12px;border-left:3px solid var(--line);line-height:1.5}
#admin-message,#editor-message{color:var(--green);line-height:1.5}
#admin-audit{white-space:pre-line;font-size:13px;line-height:1.7}
@media(max-width:800px){.account-card{margin:0;padding:20px}.account-card h1{font-size:28px}.account-settings .actions .btn{width:100%;text-align:center}.account-reports h1,.admin-v18 h1{font-size:29px}.admin-report .btn{width:100%}}

.account-status{max-width:1188px;margin:14px auto 0;padding:12px 18px;background:#fff4d9;border:1px solid #e5d5a9;border-radius:10px;color:#5e4a1c;font-size:14px;line-height:1.5}.account-status[hidden]{display:none}@media(max-width:800px){.account-status{margin:12px 16px 0}}

/* State exam */
.gia-shell{max-width:1100px;margin:32px auto;padding:0 16px 80px}.gia-top,.gia-entry{display:flex;justify-content:space-between;gap:24px;align-items:center}.gia-top{margin-bottom:28px}.gia-top span{font-size:13px;color:#596777}.gia-shell h1{font-size:clamp(24px,3vw,36px);line-height:1.35;margin:20px 0}.gia-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.gia-card{padding:26px;background:#fff;border:1px solid #dce3eb;border-radius:18px;margin:20px 0}.gia-card h2{font-size:23px}.gia-text{white-space:pre-wrap;line-height:1.75;overflow-wrap:anywhere;margin:18px 0}.gia-shell details{border-bottom:1px solid #e1e7ed;padding:18px 0}.gia-shell summary{cursor:pointer;font-weight:650;font-size:18px}.gia-shell select,.gia-shell input,.gia-shell textarea{display:block;width:100%;max-width:650px;padding:12px;border:1px solid #acbac7;border-radius:8px;background:white;color:#172536;font:inherit;margin:8px 0 18px}.gia-filters{display:flex;gap:24px}.gia-filters label{flex:1}.gia-row{display:flex;align-items:center;gap:18px;width:100%;text-align:left;padding:20px;margin:10px 0;background:white;border:1px solid #dae2e9;border-radius:12px;color:#172536;font:inherit;cursor:pointer}.gia-row strong{flex:1}.gia-row small{max-width:150px}.gia-entry{max-width:1100px;margin:24px auto}.gia-shell .btn{margin-top:12px}.gia-shell .option.selected{outline:3px solid #51769b}.gia-shell button:focus-visible,.gia-shell summary:focus-visible{outline:3px solid #51769b;outline-offset:3px}@media(max-width:720px){.gia-grid{grid-template-columns:1fr}.gia-entry,.gia-top,.gia-filters{flex-direction:column;align-items:stretch}.gia-card{padding:18px}.gia-row{flex-wrap:wrap}.gia-row small{width:100%;max-width:none}.gia-entry{margin:16px}.gia-top{gap:8px}}

.gia-shell h1.gia-question-title{font-size:clamp(22px,2.5vw,30px);line-height:1.4}
.gia-question-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:22px 0;flex-wrap:wrap}
.gia-question-nav .btn{margin-top:0}.gia-question-nav button:disabled{opacity:.4;cursor:default}
.desktop-nav button.nav-current{background:#7b263d;color:#fff;border:1px solid #7b263d}
.desktop-nav button.nav-current:hover{background:#611d30;color:#fff;border-color:#611d30}
.desktop-nav button.nav-current{border-radius:10px;padding:10px 16px}
.desktop-nav button.nav-current:focus-visible{outline:3px solid #b86a80;outline-offset:3px}
@media(max-width:600px){.gia-question-nav{flex-direction:column;align-items:stretch}.gia-question-nav .text-link{text-align:center}}