/* ===== fitein.ru / ФТИ — брендовые токены и стили ===== */
:root{
  --navy:#14285C;         /* основной синий */
  --navy-2:#1b3474;
  --navy-ink:#0e1c40;
  --orange:#E9642C;       /* базовый оранжевый */
  --orange-hi:#FF6A2C;    /* hover + акценты */
  --bg:#F4F7FB;           /* светлый холодный фон */
  --bg-2:#EAF0F8;
  --card:#FFFFFF;
  --ink:#12141A;          /* чёрный текст */
  --muted:#5A6478;
  --line:#E1E8F2;
  --ok:#1E9E62;
  --radius:16px;
  --shadow:0 8px 30px rgba(20,40,92,.08);
  --shadow-2:0 14px 46px rgba(20,40,92,.14);
  --maxw:1160px;
  --fs:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-size:var(--fs);
  font-family:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
body[data-a11y="1"]{--fs:20px;background:#fff;color:#000}
body[data-a11y="1"] .site-head,body[data-a11y="1"] .card,body[data-a11y="1"] .hero{filter:grayscale(.15)}
img{max-width:100%;height:auto}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--orange-hi)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:8px;top:8px}

/* ---- header ---- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:11px;color:var(--navy)}
.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--navy);color:var(--orange-hi);font-weight:800;font-size:22px;flex:none}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt b{font-size:19px;letter-spacing:.3px;color:var(--navy)}
.brand-txt small{font-size:11px;color:var(--muted);font-weight:500}
.nav{display:flex;gap:20px;margin-left:auto;font-weight:600;font-size:15px}
.nav a{color:var(--navy-ink);padding:6px 2px;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--orange);border-color:var(--orange)}
.head-actions{display:flex;align-items:center;gap:12px}
.a11y-btn{width:38px;height:38px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:17px}
.a11y-btn:hover{border-color:var(--navy)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:11px;font-weight:700;font-size:15px;cursor:pointer;border:0;transition:.18s;white-space:nowrap}
.btn-lk{background:var(--orange);color:#fff}
.btn-lk:hover{background:var(--orange-hi);color:#fff;transform:translateY(-1px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2);color:#fff}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy)}
.btn-lg{padding:15px 30px;font-size:17px;border-radius:13px}

/* ---- hero ---- */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-ink) 60%,#0a1734 100%);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:460px;height:460px;background:radial-gradient(circle,rgba(255,106,44,.28),transparent 70%);pointer-events:none}
.hero-in{position:relative;padding:74px 0 84px;max-width:760px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#dfe7f7;padding:7px 15px;border-radius:100px;font-size:13px;font-weight:600;letter-spacing:.4px;text-transform:uppercase}
.hero h1{font-size:clamp(30px,4.5vw,50px);line-height:1.1;margin:18px 0 16px;font-weight:800;letter-spacing:-.5px}
.hero h1 span{color:var(--orange-hi)}
.hero p.lead{font-size:clamp(16px,2vw,20px);color:#c9d5ec;margin:0 0 30px;max-width:600px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}
.hero-stats .s b{display:block;font-size:30px;color:#fff;font-weight:800}
.hero-stats .s span{font-size:13px;color:#a9b8d6}

/* ---- sections ---- */
section{padding:64px 0}
.sec-head{text-align:center;max-width:660px;margin:0 auto 42px}
.sec-head .kicker{color:var(--orange);font-weight:700;font-size:14px;letter-spacing:.6px;text-transform:uppercase}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);margin:10px 0 12px;color:var(--navy-ink);font-weight:800;letter-spacing:-.4px}
.sec-head p{color:var(--muted);font-size:17px;margin:0}
.bg-soft{background:var(--bg-2)}

/* ---- course cards ---- */
.courses{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.ccard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.2s}
.ccard:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.ccard-top{padding:26px 26px 0;position:relative}
.ccard-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;padding:5px 12px;border-radius:100px;margin-bottom:14px}
.badge-pk{background:#e8f0ff;color:var(--navy)}
.badge-po{background:#fff0e8;color:var(--orange)}
.ccard h3{font-size:22px;margin:0 0 10px;color:var(--navy-ink);font-weight:800;line-height:1.25}
.ccard .ccard-desc{color:var(--muted);font-size:15px;margin:0 0 16px}
.ccard-meta{display:flex;gap:18px;flex-wrap:wrap;padding:0 26px 18px;font-size:14px;color:var(--muted)}
.ccard-meta b{color:var(--navy-ink)}
.ccard-foot{margin-top:auto;padding:18px 26px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fbfcfe}
.ccard-price b{font-size:22px;color:var(--navy-ink)}
.ccard-price span{font-size:13px;color:var(--muted);display:block}

/* ---- feature grid ---- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px}
.feat .ic{width:46px;height:46px;border-radius:12px;background:var(--bg-2);display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.feat h4{margin:0 0 6px;font-size:17px;color:var(--navy-ink)}
.feat p{margin:0;color:var(--muted);font-size:14px}

/* ---- generic content page ---- */
.page-head{background:linear-gradient(120deg,var(--navy),var(--navy-ink));color:#fff;padding:46px 0}
.page-head h1{margin:0;font-size:clamp(26px,3.4vw,40px);font-weight:800}
.page-head .crumbs{font-size:14px;color:#b8c6e4;margin-bottom:10px}
.page-head .crumbs a{color:#dbe6fb}
.content{padding:48px 0;max-width:860px}
.content h2{color:var(--navy-ink);font-size:26px;margin:38px 0 14px;font-weight:800;scroll-margin-top:90px}
.content h3{color:var(--navy);font-size:20px;margin:26px 0 10px;font-weight:700}
.content p{margin:0 0 14px}
.content ul,.content ol{margin:0 0 16px;padding-left:22px}
.content li{margin:6px 0}
.content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.content th,.content td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.content th{background:var(--bg-2);color:var(--navy-ink);font-weight:700}
.content tr:nth-child(even) td{background:#fafcff}

/* ---- Сведения: подразделы ---- */
.sv-layout{display:grid;grid-template-columns:250px 1fr;gap:40px;align-items:start}
.sv-nav{position:sticky;top:86px;font-size:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;box-shadow:var(--shadow)}
.sv-nav a{display:block;padding:8px 12px;border-radius:8px;color:var(--navy-ink);font-weight:600}
.sv-nav a:hover{background:var(--bg-2);color:var(--orange)}
.sv-block{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 28px;margin-bottom:22px;box-shadow:var(--shadow);scroll-margin-top:86px}
.sv-block h2{margin-top:0;font-size:22px}
.deftable{width:100%;border-collapse:collapse}
.deftable th{width:44%;text-align:left;color:var(--muted);font-weight:600;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.deftable td{padding:9px 12px;border-bottom:1px solid var(--line);color:var(--navy-ink);font-weight:600}

/* ---- login ---- */
.auth-wrap{min-height:calc(100vh - 70px);display:grid;place-items:center;padding:40px 20px;background:linear-gradient(135deg,var(--navy),var(--navy-ink))}
.auth-card{background:#fff;border-radius:20px;box-shadow:var(--shadow-2);padding:40px;width:100%;max-width:410px;text-align:center}
.auth-card .brand-mark{margin:0 auto 16px;width:56px;height:56px;font-size:30px;border-radius:14px}
.auth-card h1{font-size:24px;margin:0 0 6px;color:var(--navy-ink)}
.auth-card p.sub{color:var(--muted);font-size:15px;margin:0 0 24px}
.field{text-align:left;margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--navy-ink);margin-bottom:6px}
.field input{width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:11px;font-size:16px;transition:.15s}
.field input:focus{outline:0;border-color:var(--navy);box-shadow:0 0 0 3px rgba(20,40,92,.1)}
.auth-err{background:#fdecec;color:#c0392b;border:1px solid #f5c6c6;padding:11px 14px;border-radius:10px;font-size:14px;margin-bottom:16px;text-align:left}
.auth-note{margin-top:20px;font-size:13px;color:var(--muted)}

/* ---- course inner (kabinet + course pages) ---- */
.kab-hero{background:linear-gradient(120deg,var(--navy),var(--navy-ink));color:#fff;padding:40px 0}
.kab-hero h1{margin:0 0 6px;font-size:30px}
.kab-hero p{margin:0;color:#c2d0ec}
.mod-list{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.mod{display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;box-shadow:var(--shadow);transition:.18s}
.mod:hover{border-color:var(--navy);transform:translateX(3px)}
.mod-n{width:44px;height:44px;flex:none;border-radius:11px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.mod-po .mod-n{background:var(--orange)}
.mod-body{flex:1}
.mod-body h3{margin:0 0 3px;font-size:17px;color:var(--navy-ink)}
.mod-body span{font-size:13px;color:var(--muted)}
.mod-tag{font-size:12px;font-weight:700;padding:4px 10px;border-radius:100px;background:var(--bg-2);color:var(--navy)}
.mod-tag.test{background:#fff0e8;color:var(--orange)}
.mod-tag.done{background:#e6f6ee;color:var(--ok)}

/* video / presentation embed */
.embed{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#0e1c40;margin:20px 0}
.embed iframe{display:block;width:100%;border:0}
.embed-ph{aspect-ratio:16/9;display:grid;place-items:center;color:#9fb1d6;text-align:center;padding:20px;background:linear-gradient(135deg,#16264f,#0e1c40)}
.embed-ph .pic{font-size:44px;margin-bottom:10px}
.lesson-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}

/* quiz */
.quiz{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow);margin:28px 0}
.quiz h3{margin:0 0 4px;color:var(--navy-ink)}
.quiz .q{margin:18px 0;padding-bottom:18px;border-bottom:1px solid var(--line)}
.quiz .q:last-of-type{border-bottom:0}
.quiz .q p.qt{font-weight:700;margin:0 0 10px;color:var(--navy-ink)}
.quiz label{display:block;padding:10px 14px;border:1.5px solid var(--line);border-radius:10px;margin:7px 0;cursor:pointer;transition:.12s;font-size:15px}
.quiz label:hover{border-color:var(--navy)}
.quiz input{margin-right:9px}
.quiz label.correct{border-color:var(--ok);background:#e9f8f0}
.quiz label.wrong{border-color:#e0736a;background:#fdeeec}
.quiz-res{margin-top:16px;padding:14px 18px;border-radius:12px;font-weight:700;display:none}
.quiz-res.show{display:block}
.quiz-res.pass{background:#e6f6ee;color:var(--ok)}
.quiz-res.fail{background:#fdecec;color:#c0392b}

/* prev/next */
.pager{display:flex;justify-content:space-between;gap:14px;margin:40px 0 0;flex-wrap:wrap}
.pager a{flex:1;min-width:200px;border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:#fff;transition:.15s}
.pager a:hover{border-color:var(--navy)}
.pager .lbl{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.pager .ttl{font-weight:700;color:var(--navy-ink)}
.pager .next{text-align:right}

/* ---- footer ---- */
.site-foot{background:var(--navy-ink);color:#c2cde3;padding:52px 0 22px;margin-top:60px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.brand-foot .brand-txt b{color:#fff}
.brand-foot .brand-txt small{color:#8fa3c8}
.foot-org{font-size:13px;margin:16px 0 8px;color:#9fb0d0}
.foot-lic{font-size:12px;color:#7e91b6}
.site-foot h4{color:#fff;font-size:15px;margin:0 0 12px}
.site-foot p{margin:6px 0;font-size:14px;color:#b3c1dd}
.site-foot a{color:#dbe6fb}
.site-foot a:hover{color:var(--orange-hi)}
.foot-hours{color:#8fa3c8!important;font-size:13px!important}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:32px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#7e91b6}

/* ---- responsive ---- */
@media(max-width:900px){
  .courses,.features,.foot-grid{grid-template-columns:1fr}
  .features{grid-template-columns:1fr 1fr}
  .sv-layout{grid-template-columns:1fr}
  .sv-nav{position:static;margin-bottom:20px}
  .nav{display:none}
  .foot-grid{gap:24px}
}
@media(max-width:560px){
  .features{grid-template-columns:1fr}
  .head-in{gap:12px}
  .brand-txt small{display:none}
  .hero-stats{gap:22px}
  .btn-lg{padding:13px 22px;font-size:16px}
}

/* ============================================================
   PREMIUM: страница курса и уроки «дорогого» вида
   ============================================================ */
/* --- course hero --- */
.course-hero{position:relative;background:linear-gradient(135deg,#16294f 0%,var(--navy-ink) 55%,#0a1430 100%);color:#fff;overflow:hidden}
.course-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 320px at 88% 12%,rgba(255,106,44,.20),transparent 60%),radial-gradient(500px 300px at 8% 90%,rgba(45,80,160,.35),transparent 60%);pointer-events:none}
.chero-grid{position:relative;display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center;padding:44px 0 52px}
.chero-crumbs{font-size:14px;color:#a9bbe0;margin-bottom:16px}
.chero-crumbs a{color:#d3e0f8}
.chero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:7px 15px;border-radius:100px;font-size:12.5px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;color:#eaf1ff}
.course-hero h1{font-size:clamp(27px,3.4vw,40px);line-height:1.12;margin:16px 0 12px;font-weight:800;letter-spacing:-.5px}
.chero-sub{font-size:17px;color:#c6d3ec;margin:0 0 22px;max-width:560px}
.chero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chero-pill{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:11px;padding:9px 14px;font-size:13.5px;color:#e6edfb}
.chero-pill b{color:#fff}
.chero-cta{display:flex;gap:13px;flex-wrap:wrap}
.hero-illo{width:100%;max-width:440px;height:auto;filter:drop-shadow(0 24px 50px rgba(0,0,0,.4))}
.chero-illo-wrap{display:flex;justify-content:center}

/* --- progress bar --- */
.cprogress{background:rgba(255,255,255,.12);height:8px;border-radius:100px;overflow:hidden;margin-top:26px;max-width:520px}
.cprogress i{display:block;height:100%;background:linear-gradient(90deg,var(--orange),var(--orange-hi));border-radius:100px}
.cprogress-lbl{font-size:13px;color:#b8c6e4;margin-top:8px}

/* --- generic premium section --- */
.psec{padding:56px 0}
.psec h2.pt{font-size:clamp(23px,2.6vw,31px);color:var(--navy-ink);font-weight:800;letter-spacing:-.3px;margin:0 0 6px}
.psec .pt-sub{color:var(--muted);font-size:16px;margin:0 0 30px}
.psec-kicker{color:var(--orange);font-weight:700;font-size:13px;letter-spacing:.6px;text-transform:uppercase;margin-bottom:8px}

/* --- outcomes grid --- */
.outcomes{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.oc{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:var(--shadow);transition:.18s}
.oc:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#d3deee}
.oc .oc-ic{flex:none;width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,#eef3fc,#e2ebfa);display:grid;place-items:center;font-size:20px}
.oc h4{margin:2px 0 4px;font-size:16px;color:var(--navy-ink)}
.oc p{margin:0;font-size:14px;color:var(--muted);line-height:1.5}

/* --- audience --- */
.aud{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.aud-card{background:linear-gradient(160deg,#fff,#f7faff);border:1px solid var(--line);border-radius:16px;padding:24px;text-align:center;box-shadow:var(--shadow)}
.aud-card .em{font-size:34px;display:block;margin-bottom:10px}
.aud-card h4{margin:0 0 6px;color:var(--navy-ink);font-size:17px}
.aud-card p{margin:0;color:var(--muted);font-size:14px}

/* --- program (sections + lessons) --- */
.prog{display:flex;flex-direction:column;gap:20px}
.psec-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.psec-head{display:flex;align-items:center;gap:16px;padding:20px 24px;background:linear-gradient(120deg,#fbfcfe,#f2f6fd);border-bottom:1px solid var(--line)}
.psec-num{flex:none;width:46px;height:46px;border-radius:13px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px}
.mod-po .psec-num,.psec-card.po .psec-num{background:linear-gradient(135deg,var(--orange),var(--orange-hi))}
.psec-head h3{margin:0;font-size:18px;color:var(--navy-ink);font-weight:800;line-height:1.25}
.psec-head .cnt{font-size:13px;color:var(--muted);margin-top:2px}
.plesson{display:flex;align-items:center;gap:15px;padding:15px 24px;border-top:1px solid var(--line);color:inherit;transition:.14s}
.plesson:first-of-type{border-top:0}
.plesson:hover{background:#f7faff}
.plesson:hover .pl-title{color:var(--orange)}
.pl-ic{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:15px;font-weight:800;background:#eef3fc;color:var(--navy)}
.pl-ic.t-quiz{background:#fff0e8;color:var(--orange)}
.pl-ic.t-practice,.pl-ic.t-assign{background:#eaf7f0;color:var(--ok)}
.pl-ic.t-exam{background:linear-gradient(135deg,var(--orange),var(--orange-hi));color:#fff}
.pl-body{flex:1;min-width:0}
.pl-title{font-weight:600;color:var(--navy-ink);font-size:15.5px}
.pl-meta{font-size:12.5px;color:var(--muted);margin-top:1px}
.pl-tag{font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:100px;background:var(--bg-2);color:var(--navy);white-space:nowrap}
.pl-tag.test{background:#fff0e8;color:var(--orange)}
.pl-arrow{color:#c2cddf;font-size:18px;flex:none}

/* --- certificate card --- */
.certrow{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;background:linear-gradient(135deg,var(--navy),var(--navy-ink));border-radius:22px;padding:38px 40px;color:#fff;box-shadow:var(--shadow-2);position:relative;overflow:hidden}
.certrow::after{content:"";position:absolute;right:-80px;bottom:-80px;width:280px;height:280px;background:radial-gradient(circle,rgba(255,106,44,.22),transparent 70%)}
.certrow h3{font-size:24px;margin:0 0 10px;position:relative}
.certrow p{color:#c6d3ec;margin:0 0 14px;position:relative}
.certrow ul{list-style:none;padding:0;margin:0;position:relative}
.certrow li{padding:6px 0 6px 28px;position:relative;color:#e4ecfb}
.certrow li::before{content:"✓";position:absolute;left:0;color:var(--orange-hi);font-weight:800}
.cert-svg{position:relative}

/* --- lesson hero --- */
.lhero{background:linear-gradient(120deg,#16294f,var(--navy-ink));color:#fff;padding:32px 0 30px;position:relative;overflow:hidden}
.lhero::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;background:radial-gradient(circle,rgba(255,106,44,.16),transparent 70%)}
.lhero .crumbs{font-size:13.5px;color:#aebfe2;margin-bottom:12px;position:relative}
.lhero .crumbs a{color:#d3e0f8}
.lhero h1{margin:0;font-size:clamp(22px,2.8vw,32px);font-weight:800;position:relative;max-width:820px}
.lmeta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;position:relative}
.lmeta span{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.15);border-radius:9px;padding:6px 12px;font-size:13px;color:#e6edfb}
.lhero-prog{height:4px;background:rgba(255,255,255,.14);position:absolute;left:0;right:0;bottom:0}
.lhero-prog i{display:block;height:100%;background:linear-gradient(90deg,var(--orange),var(--orange-hi))}

/* --- lesson body enhancements --- */
.lesson-body{max-width:820px}
.lesson-body h2{font-size:25px;margin:34px 0 12px}
.lesson-body h3{font-size:19px}
.lesson-body p,.lesson-body li{font-size:16.5px;line-height:1.72;color:#2a3142}
.lesson-body strong{color:var(--navy-ink)}
.lesson-body code{background:#eef2f8;border:1px solid #e0e7f2;border-radius:6px;padding:1px 6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;color:#14285C}
.lesson-body>p:first-child{font-size:18px;color:var(--muted)}
.figure{margin:24px 0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px 14px;box-shadow:var(--shadow)}
.figure-svg{width:100%;height:auto;display:block}
.figure figcaption{text-align:center;color:var(--muted);font-size:13.5px;margin-top:10px}
.callout{display:flex;gap:14px;border-radius:14px;padding:16px 20px;margin:22px 0;border:1px solid;font-size:15.5px}
.callout .ci{font-size:22px;flex:none;line-height:1.3}
.callout.tip{background:#eef8f1;border-color:#c9ecd7;color:#1c5c3a}
.callout.info{background:#eef3fc;border-color:#d3e1f7;color:#1e3a72}
.callout.warn{background:#fdf2ea;border-color:#f6d8c2;color:#8a4a1e}

/* --- premium video embed --- */
.embed{border-radius:18px;box-shadow:var(--shadow-2)}
.embed-bar{display:flex;align-items:center;gap:10px;padding:12px 18px;background:#0c1836;color:#c6d3ec;font-size:13px;font-weight:600}
.embed-bar .dot{width:9px;height:9px;border-radius:50%;background:var(--orange)}

/* --- upload widget (демо) --- */
.submit-box{background:linear-gradient(160deg,#fff,#f6f9ff);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow);margin:28px 0}
.submit-box .sb-h{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.submit-box .sb-h .ic{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;display:grid;place-items:center;font-size:20px;flex:none}
.submit-box h3{margin:0;font-size:19px;color:var(--navy-ink)}
.submit-box .sb-sub{color:var(--muted);font-size:14px;margin:0 0 18px}
.dropzone{border:2px dashed #c3d0e6;border-radius:14px;background:#fbfdff;padding:30px 20px;text-align:center;cursor:pointer;transition:.16s}
.dropzone:hover,.dropzone.drag{border-color:var(--orange);background:#fff7f2}
.dropzone .dz-ic{font-size:38px;margin-bottom:8px}
.dropzone .dz-t{font-weight:700;color:var(--navy-ink);font-size:16px}
.dropzone .dz-s{color:var(--muted);font-size:13px;margin-top:4px}
.dz-file{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-top:14px}
.dz-file .fi{font-size:22px}
.dz-file .fn{flex:1;font-weight:600;color:var(--navy-ink);font-size:14px;text-align:left}
.dz-file .fx{color:#c0392b;cursor:pointer;font-weight:700}
.submit-actions{display:flex;gap:12px;align-items:center;margin-top:16px;flex-wrap:wrap}
.sb-status{display:none;align-items:center;gap:10px;background:#eaf7f0;border:1px solid #c9ecd7;color:var(--ok);border-radius:12px;padding:14px 18px;margin-top:16px;font-weight:600}
.sb-status.show{display:flex}

/* --- responsive --- */
@media(max-width:900px){
  .chero-grid{grid-template-columns:1fr;gap:24px}
  .chero-illo-wrap{order:-1}
  .outcomes,.aud{grid-template-columns:1fr}
  .certrow{grid-template-columns:1fr;padding:28px}
  .cert-svg{display:none}
}
@media(max-width:600px){
  .aud{grid-template-columns:1fr}
  .plesson{padding:14px 16px}
  .psec-head{padding:16px}
}