/* ApexStudy — светлая дизайн-система v3.
   Шрифт Onest (кириллица). Чернильный текст, синий бренд, мягкие тени, круглые карточки. */
@import url('https://fonts.googleapis.com/css2?family=Onest:wght@400;500;600;700;800;900&display=swap');

:root{
  --bg:#f6f7fb; --bg-soft:#eef1f8; --card:#ffffff; --line:#e8ebf3;
  --ink:#0e1726; --text:#1c2434; --muted:#5b6472; --dim:#8a93a3;
  --brand:#2563eb; --brand-2:#1d4fd7; --brand-soft:#eaf0fe; --brand-dim:rgba(37,99,235,.09);
  --accent:#16a34a; --accent-soft:#e8f7ee; --warn:#d97706; --warn-soft:#fdf3e3;
  --danger:#dc2626; --danger-soft:#fdecec;
  --radius:18px; --radius-l:26px; --maxw:1160px;
  --shadow:0 14px 44px rgba(31,41,72,.09); --shadow-s:0 4px 18px rgba(31,41,72,.05);
  --font:'Onest',-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
body::before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(160deg,#fbf6ee 0%,#f7f7fb 25%,#eff4fc 55%,#eff6f1 85%,#f6f7fb 100%)}
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.rv{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}
@media(prefers-reduced-motion:no-preference){
  body{animation:pageIn .4s ease}
  #tab-body>*{animation:fadeUp .3s ease both}
  #stage>*{animation:fadeUp .3s ease both}
}
html{scroll-behavior:smooth;overflow-y:scroll}
body{margin:0;font-family:var(--font);font-size:16px;color:var(--text);background:#f6f7fb;
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.alt,.section.tint-warm,.section.tint-blue,.section.tint-green{background:transparent}
.eyebrow{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px}
h1,h2,h3{color:var(--ink);line-height:1.15;margin:0 0 14px;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(30px,5vw,52px);font-weight:900}
h2{font-size:clamp(24px,3.8vw,38px)}
h3{font-size:19px}
p{margin:0 0 14px;color:var(--muted)}
.lead{font-size:clamp(16px,2vw,20px);color:var(--muted);max-width:640px}
.danger{color:var(--danger)}
.center{text-align:center}.mt-24{margin-top:24px}
.muted{color:var(--muted)}
@media(min-width:861px){.only-mobile{display:none !important}}

/* ---------- header ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .container{display:flex;align-items:center;gap:16px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:19px;letter-spacing:.01em;color:var(--ink)}
.logo b{color:var(--brand)}
.logo .mark{width:34px;height:34px;display:block;border-radius:0;background:none}
.float-sym{position:absolute;font-weight:800;color:var(--brand);opacity:.10;user-select:none;pointer-events:none;font-size:46px;animation:floaty 7s ease-in-out infinite}
.float-sym.s2{animation-delay:2.2s;font-size:38px}
.float-sym.s3{animation-delay:4.1s;font-size:54px}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-6deg)}50%{transform:translateY(-16px) rotate(5deg)}}
@media(prefers-reduced-motion:reduce){.float-sym{animation:none}}
.nav .tag{color:var(--dim);font-size:12.5px;white-space:nowrap}
.nav-links{display:flex;gap:22px;align-items:center;margin-left:auto}
.nav-links a{color:var(--text);font-size:15px;font-weight:600;white-space:nowrap}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;gap:10px;align-items:center}
.burger{display:none;background:none;border:0;color:var(--ink);font-size:26px;cursor:pointer;margin-left:auto;line-height:1}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font-weight:700;font-size:15px;
  padding:13px 24px;border-radius:14px;transition:all .22s ease;font-family:var(--font);white-space:nowrap;line-height:1.2}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--brand-2)}
.btn-primary .dot{width:8px;height:8px;border-radius:50%;background:#7ef2a7}
.btn-outline,.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-outline:hover,.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1d2a42}
.btn-danger{background:#fff;color:var(--danger);border:1.5px solid #f3c1c1}
.btn-lg{padding:16px 30px;font-size:16.5px;border-radius:16px}
.btn-sm{padding:8px 15px;font-size:13.5px;border-radius:10px}
.wide{width:100%;margin-top:8px}
button:disabled{opacity:.5;cursor:default}

/* ---------- hero ---------- */
.hero{position:relative;background:
  radial-gradient(900px 440px at 88% -10%,rgba(37,99,235,.10),transparent 65%),
  radial-gradient(760px 400px at -12% 24%,rgba(217,119,6,.07),transparent 60%)}
.hero .blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none}
.hero-visual{position:relative;display:grid;place-items:center;padding:10px 0}
.hero-photo{position:absolute;width:78%;max-width:400px;aspect-ratio:4/4.6;object-fit:cover;border-radius:30px;
  transform:rotate(-5deg) translate(-16%,0);box-shadow:var(--shadow);border:6px solid #fff}
.hero-visual .phone{position:relative;transform:rotate(2.5deg) translate(16%,0);z-index:2}
.hero .container{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;padding:64px 20px 72px}
.hero .sub{font-size:clamp(16px,2.1vw,20px);color:var(--muted);max-width:540px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 20px}
.chip{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13.5px;font-weight:600;color:var(--text);box-shadow:var(--shadow-s)}
.chip b{color:var(--brand)}
.hero-note{color:var(--dim);font-size:14px;margin-top:14px}

/* телефон с отчётом */
.phone{width:min(330px,88vw);margin:0 auto;background:var(--ink);border-radius:38px;padding:12px;box-shadow:var(--shadow)}
.phone-screen{background:#f2f4f8;border-radius:28px;padding:14px 12px;min-height:430px}
.phone-top{text-align:center;color:var(--dim);font-size:11.5px;margin-bottom:10px}
.msg{background:#fff;border-radius:14px 14px 14px 4px;padding:12px 14px;font-size:13.2px;line-height:1.55;color:#1c2434;box-shadow:var(--shadow-s);margin-bottom:8px}
.msg b{color:var(--ink)}
.msg .from{color:var(--brand);font-weight:700;font-size:12px;margin-bottom:4px}
.msg .time{color:var(--dim);font-size:10.5px;text-align:right;margin-top:4px}
.phone-cap{text-align:center;color:var(--dim);font-size:13px;margin-top:12px}

/* ---------- generic cards/grids ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);padding:26px;box-shadow:var(--shadow-s);transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .ic{width:48px;height:48px;border-radius:15px;background:var(--brand-soft);display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.grid3 .card:nth-child(3n+2) .ic{background:#e9f7ee}
.grid3 .card:nth-child(3n) .ic{background:#fdf3e3}
.card h3{margin-bottom:8px}
.card p{margin:0;font-size:15px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-s)}
.stat .num{font-size:34px;font-weight:900;color:var(--brand);letter-spacing:-.02em}
.stat .t{color:var(--ink);font-weight:700;margin:2px 0}
.stat .lbl{color:var(--dim);font-size:13.5px;line-height:1.45}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:22px;box-shadow:var(--shadow-s);position:relative;transition:transform .18s ease}
.step:hover{transform:translateY(-3px)}
.step .n{width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;margin-bottom:12px}
.step h3{font-size:17px}
.step p{margin:0;font-size:14px}

/* медиа-блоки с фото */
.media2{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center;margin-top:30px}
.media2 img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-l);box-shadow:var(--shadow);border:6px solid #fff}
.photo-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.photo-strip img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-s);border:5px solid #fff}
.photo-strip img:nth-child(2){transform:translateY(14px) rotate(1.5deg)}
.photo-strip img:nth-child(1){transform:rotate(-1.5deg)}
.photo-strip img:nth-child(3){transform:rotate(1deg)}

/* сравнение */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.compare .col{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:24px;box-shadow:var(--shadow-s)}
.compare .col.good{border:2px solid var(--brand);box-shadow:var(--shadow)}
.compare .col h3{display:flex;align-items:center;gap:10px;font-size:19px}
.compare .bad h3{color:var(--dim)}
.compare .good h3{color:var(--brand)}
.compare ul{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:12px}
.compare li{color:var(--muted);font-size:15px;padding-left:24px;position:relative}
.compare li:before{content:"✕";position:absolute;left:0;color:#c3c9d4;font-weight:700}
.compare .good li{color:var(--text)}
.compare .good li:before{content:"✓";color:var(--accent);font-weight:800}

/* преподаватель */
.teacher{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-l);padding:30px;box-shadow:var(--shadow-s)}
.avatar{width:92px;height:92px;border-radius:50%;background:linear-gradient(135deg,var(--brand),#4f8bff);color:#fff;
  display:grid;place-items:center;font-size:34px;font-weight:900;flex:0 0 auto}

/* pricing */
.pricewrap{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center;margin-top:32px}
.price{background:#fff;border:2px solid var(--brand);border-radius:var(--radius-l);padding:32px;box-shadow:var(--shadow)}
.price .name{font-weight:700;color:var(--dim);text-transform:uppercase;letter-spacing:.06em;font-size:12.5px}
.price .amount{font-size:46px;font-weight:900;color:var(--ink);margin:8px 0 2px;letter-spacing:-.02em}
.price .amount span{font-size:16px;color:var(--dim);font-weight:600}
.price ul{list-style:none;padding:0;margin:18px 0 22px;display:grid;gap:11px}
.price li{display:flex;gap:10px;color:var(--text);font-size:15.5px}
.price li:before{content:"✓";color:var(--accent);font-weight:800}
.price-note{color:var(--muted);font-size:15px}
.price-note .free{color:var(--accent);font-weight:800}
.cta-band{background:linear-gradient(120deg,var(--brand),#4f8bff);border-radius:var(--radius-l);padding:52px 30px;text-align:center;box-shadow:var(--shadow)}
.cta-band h2,.cta-band p{color:#fff}
.cta-band p{opacity:.9}
.cta-band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 8px 24px rgba(0,0,0,.18)}
.cta-band .btn-primary:hover{background:#f2f6ff}

/* FAQ */
.faq{max-width:820px;margin:30px auto 0}
details.qa{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin-bottom:12px;box-shadow:var(--shadow-s)}
details.qa summary{cursor:pointer;font-weight:700;color:var(--ink);font-size:16.5px;list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary:after{content:"+";color:var(--brand);font-size:22px;font-weight:600;flex:0 0 auto}
details.qa[open] summary:after{content:"–"}
details.qa p{margin:12px 0 0;font-size:15px}

/* ---------- forms / auth ---------- */
.authcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:30px;box-shadow:var(--shadow)}
.tabs{display:flex;gap:6px;margin-bottom:20px;background:var(--bg-soft);border-radius:14px;padding:5px}
.tab{flex:1;padding:11px;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:15px;border-radius:10px;cursor:pointer;font-family:var(--font)}
.tab.active{background:#fff;color:var(--brand);box-shadow:var(--shadow-s)}
label.fld{display:block;margin:14px 0 6px;font-weight:600;font-size:14px;color:var(--ink)}
input.fld,select.fld,textarea.fld{width:100%;padding:13px 14px;border-radius:12px;border:1.5px solid var(--line);background:#fff;color:var(--ink);font-size:16px;font-family:var(--font)}
input.fld:focus,select.fld:focus,textarea.fld:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-dim)}
textarea.fld{resize:vertical;min-height:80px}
.err{color:var(--danger);font-size:14px;margin-top:12px;min-height:1px}
.okmsg{color:var(--accent);font-size:14px;margin-top:12px}

/* ---------- кабинеты ---------- */
.lkgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
.lkgrid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:18px 0}
.lkcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:22px;margin-bottom:14px;box-shadow:var(--shadow-s)}
.lkcard .nm{color:var(--dim);font-size:12px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;font-weight:800}
.lkcard .big{font-size:27px;font-weight:900;color:var(--ink)}
.bar{background:var(--bg-soft);border-radius:8px;height:10px;margin-top:10px;overflow:hidden}
.bar>div{height:100%;background:var(--brand)}
.score{width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:17px;flex:0 0 auto}
.lessons{display:grid;gap:0}
.lesson-row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line)}
.lesson-row:last-child{border-bottom:0}
.lesson-num{color:var(--brand);font-weight:800;min-width:44px;font-size:15px}
.lesson-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px;align-items:center}
.badge{display:inline-block;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:12.5px;padding:5px 12px;border-radius:999px}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.badge.ok{background:var(--accent-soft);color:var(--accent)}
.badge.dangerb{background:var(--danger-soft);color:var(--danger)}
.btn-miro{background:linear-gradient(135deg,var(--brand),#4f8bff);color:#fff}
.btn-telemost{background:linear-gradient(135deg,#7c5cd6,#5b3fa8);color:#fff}
.countdown{display:flex;gap:12px;margin:16px 0}
.countdown .cell{background:var(--bg-soft);border-radius:14px;padding:12px 0;text-align:center;min-width:76px}
.countdown .val{font-size:28px;font-weight:900;color:var(--brand)}
.countdown .cap{font-size:12px;color:var(--dim)}
.next-lesson{background:linear-gradient(120deg,#eef3fe,#f6f9ff);border:1px solid #dbe6fd;border-radius:var(--radius-l);padding:28px}
.lk-tabs{display:flex;gap:6px;flex-wrap:wrap;margin:20px 0;border-bottom:1.5px solid var(--line)}
.lk-tab{padding:11px 18px;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:15px;cursor:pointer;font-family:var(--font);border-bottom:2.5px solid transparent;margin-bottom:-1.5px}
.lk-tab.active{color:var(--brand);border-bottom-color:var(--brand)}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px}
.tbl th{color:var(--dim);text-align:left;font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.05em;padding:10px;border-bottom:1.5px solid var(--line)}
.tbl td{padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--text)}
.tbl tr:last-child td{border-bottom:0}
.material{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:10px;transition:.15s;box-shadow:var(--shadow-s)}
.material:hover{border-color:var(--brand)}
.material .ic{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);display:grid;place-items:center;font-size:19px;flex:0 0 auto}
.material .mt{font-weight:700;color:var(--ink)}
.material .ms{color:var(--dim);font-size:13px}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;
  border-radius:14px;padding:13px 24px;font-weight:600;z-index:200;box-shadow:var(--shadow);opacity:0;transition:.25s;pointer-events:none}
.toast.show{opacity:1}
.toast.ok{background:#14532d}
.toast.bad{background:#7f1d1d}
.empty{color:var(--dim);text-align:center;padding:32px 10px;font-size:15px}
.spin{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;margin:40px auto;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- quiz ---------- */
.quiz-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:34px 32px;max-width:720px;margin:0 auto;box-shadow:var(--shadow)}
.quiz-progress{background:var(--bg-soft);border-radius:8px;height:8px;overflow:hidden;margin:10px 0 20px}
.quiz-progress>div{height:100%;background:var(--brand);transition:width .3s}
.quiz-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px;font-size:13px;color:var(--dim)}
.qtext{font-size:19px;font-weight:700;color:var(--ink);margin:0 0 18px;line-height:1.5}
.opt{display:flex;gap:12px;align-items:center;background:#fff;border:1.5px solid var(--line);border-radius:14px;
  padding:15px 16px;margin-bottom:10px;cursor:pointer;transition:.12s;font-size:16px;color:var(--text)}
.opt:hover{border-color:var(--brand)}
.opt.sel{border-color:var(--brand);background:var(--brand-soft)}
.opt.right{border-color:var(--accent);background:var(--accent-soft)}
.opt.wrong{border-color:var(--danger);background:var(--danger-soft)}
.opt input{appearance:none;-webkit-appearance:none;width:19px;height:19px;margin:0;flex:0 0 auto;
  border:2px solid #c3c9d4;border-radius:50%;background:#fff;transition:.12s}
.opt.sel input,.opt input:checked{border-color:var(--brand);box-shadow:inset 0 0 0 4.5px var(--brand)}
.opt.right input{border-color:var(--accent);box-shadow:inset 0 0 0 4.5px var(--accent)}
.opt.wrong input{border-color:var(--danger)}
.result-score{font-size:58px;font-weight:900;color:var(--brand);line-height:1;letter-spacing:-.02em}
.topicbar{margin:10px 0}
.topicbar .tb-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:4px;color:var(--text)}
.chart-wrap{margin:14px 0}

/* ---------- страница результатов ---------- */
.cases{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:18px;margin-top:30px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:20px;box-shadow:var(--shadow-s);transition:transform .22s ease,box-shadow .22s ease}
.case:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-photo{width:100%;aspect-ratio:1/0.92;object-fit:cover;border-radius:16px;margin-bottom:14px;display:block}
.case .who{font-weight:800;font-size:19px;color:var(--ink)}
.case .cmeta{color:var(--dim);font-size:13px;margin-bottom:14px}
.scoreflow{display:flex;align-items:baseline;gap:10px;margin:6px 0}
.scoreflow .from{color:var(--dim);font-size:20px;font-weight:700}
.scoreflow .arrow{color:var(--brand);font-size:20px}
.scoreflow .to{color:var(--accent);font-size:38px;font-weight:900;line-height:1}
.case .delta{display:inline-block;background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:13px;padding:4px 12px;border-radius:999px;margin-top:6px}
.case .period{color:var(--dim);font-size:14px;margin:8px 0 0}
details.proto{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}
details.proto summary{cursor:pointer;color:var(--brand);font-weight:700;font-size:14px;list-style:none}
details.proto summary::-webkit-details-marker{display:none}
details.proto summary:after{content:" ▸"}
details.proto[open] summary:after{content:" ▾"}
details.proto ul{margin:12px 0 0;padding-left:18px;color:var(--muted);font-size:14px;display:grid;gap:10px}
.reviewgrid{columns:3;column-gap:18px;margin-top:30px}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:0 0 18px;break-inside:avoid;box-shadow:var(--shadow-s)}
.review p{color:var(--text);font-size:15px;margin:0 0 12px}
.review .author{font-weight:700;color:var(--ink)}
.review .role{color:var(--dim);font-size:13px}
.keytiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}
.keytile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-s)}
.keytile h3{font-size:16px;margin:0 0 6px}
.keytile p{margin:0;font-size:14px}

.rev-head{display:flex;gap:11px;align-items:center;margin-top:6px}
.avatar-img{width:46px;height:46px;border-radius:50%;object-fit:cover;box-shadow:var(--shadow-s);flex:0 0 auto}
.avatar-img.big{width:56px;height:56px}
.avatar-ltr{width:46px;height:46px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:18px;flex:0 0 auto}
.role-i{color:var(--dim);font-size:13px}
.case-head{display:flex;gap:12px;align-items:center;margin-bottom:4px}

/* ---------- footer ---------- */
footer{border-top:1px solid rgba(31,41,72,.06);background:rgba(255,255,255,.5);padding:44px 0}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;color:var(--dim);font-size:14px}
.foot a{color:var(--muted)}.foot a:hover{color:var(--brand)}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- mobile ---------- */
@media(max-width:1250px){ .nav .tag{display:none} }
@media(max-width:1000px){ .nav-links{gap:15px} .nav-links a{font-size:14px} }
@media(max-width:860px){
  .section{padding:52px 0}
  .media2{grid-template-columns:1fr;gap:20px}
  .photo-strip{grid-template-columns:1fr;gap:12px}
  .photo-strip img{transform:none !important}
  .hero-photo{display:none}
  .hero-visual .phone{transform:none}
  .nav-cta{display:none}
  .burger{display:block}
  .nav-links{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    margin:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 16px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-links .btn{width:100%;margin-top:12px}
  .only-mobile{display:block}
  .nav-links .btn.only-mobile{display:inline-flex}
  .hero .container{grid-template-columns:1fr;padding:38px 20px 48px;gap:34px}
  .hero-cta .btn{width:100%}
  .grid3,.grid2,.grid4,.stats,.compare,.steps,.pricewrap,.lkgrid,.lkgrid3,.cases,.keytiles{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .reviewgrid{columns:1}
  .cta-band{padding:38px 20px}
  .cta-band .btn{width:100%}
  .authcard{padding:24px}
  .foot{flex-direction:column;gap:16px}
  .countdown .cell{min-width:0;flex:1}
  .quiz-card{padding:24px 18px}
  .lesson-row{flex-direction:column;gap:8px}
  .tblwrap{overflow-x:auto}
  .teacher{grid-template-columns:1fr;text-align:center;justify-items:center}
}