/* Анти-страх · записи эфиров — чистый ч/б минимализм */
:root{
  --bg:#ffffff;
  --ink:#111111;
  --ink-2:#000000;
  --muted:#6b6b6b;
  --line:#e6e6e6;
  --line-2:#d4d4d4;
  --hover:#f4f4f4;
  --stage:#000000;
  --maxw:1000px;
  --radius:14px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit}
img,video{max-width:100%;display:block}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-head{border-bottom:1px solid var(--line);background:var(--bg)}
.site-head .wrap{padding-top:26px;padding-bottom:22px}
.kicker{
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);margin:0 0 8px;font-weight:600;
}
.site-title{
  margin:0;font-size:clamp(26px,5.2vw,40px);line-height:1.04;
  font-weight:800;letter-spacing:-.02em;color:var(--ink-2);
}
.site-sub{margin:10px 0 0;color:var(--muted);font-size:15px;max-width:46ch}

/* ---------- строка срока доступа ---------- */
.expiry-bar{
  display:flex;align-items:center;justify-content:center;gap:9px;
  padding:11px 20px;border-bottom:1px solid var(--line);
  background:#fafafa;color:var(--muted);
  font-size:13.5px;font-weight:600;letter-spacing:.01em;
  font-variant-numeric:tabular-nums;text-align:center;
}
.expiry-bar .expiry-dot{
  width:7px;height:7px;border-radius:50%;background:var(--ink-2);flex:0 0 auto;
  animation:expiry-pulse 1.6s ease-in-out infinite;
}
.expiry-bar.is-soon{color:var(--ink-2);background:#f0f0f0}
@keyframes expiry-pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* ---------- экран «доступ закрыт» ---------- */
.closed{max-width:560px;margin:60px auto;text-align:center;padding:0 20px}
.closed h2{font-size:clamp(24px,4vw,32px);font-weight:800;letter-spacing:-.015em;color:var(--ink-2);margin:0 0 14px}
.closed p{color:var(--muted);font-size:16.5px;line-height:1.6;margin:0}

/* ---------- day switcher ---------- */
.days-bar{
  position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(1.4) blur(8px);
  border-bottom:1px solid var(--line);
}
.days{display:flex;gap:0;max-width:var(--maxw);margin:0 auto;padding:0 20px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.days::-webkit-scrollbar{display:none}
.day-tab{
  appearance:none;background:none;border:0;cursor:pointer;
  font-family:inherit;color:var(--muted);font-size:15px;font-weight:600;
  padding:16px 4px;margin-right:28px;position:relative;
  border-bottom:2px solid transparent;margin-bottom:-1px;
  transition:color .15s ease;
}
.day-tab:hover{color:var(--ink)}
.day-tab[aria-selected="true"]{color:var(--ink-2);border-bottom-color:var(--ink-2)}
.day-tab:focus-visible{outline:2px solid var(--ink-2);outline-offset:3px;border-radius:3px}
.day-tab small{display:block;font-size:11px;font-weight:500;letter-spacing:.02em;color:var(--muted);margin-top:2px}
.day-tab[aria-selected="true"] small{color:var(--ink)}

/* ---------- layout ---------- */
.stage{padding:34px 0 72px}
.lesson{display:grid;grid-template-columns:432px 1fr;gap:40px;align-items:start}
@media(max-width:860px){
  .lesson{grid-template-columns:1fr;gap:26px}
}

/* ---------- player (portrait) ---------- */
.player-col{position:sticky;top:78px}
@media(max-width:860px){.player-col{position:static}}
.player-wrap{
  width:100%;max-width:432px;margin:0 auto;
  aspect-ratio:432/766;max-height:78vh;
  background:var(--stage);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-2);
}
/* на телефоне ограничиваем видео по высоте, чтобы влезало без прокрутки и без чёрных полос */
@media(max-width:860px){
  .player-wrap{width:auto;max-width:100%;height:70vh;max-height:70vh}
}
.player-wrap video{width:100%;height:100%;object-fit:contain;background:#000}
.player-note{margin:12px auto 0;max-width:432px;color:var(--muted);font-size:13px;text-align:center}

/* ---------- content ---------- */
.l-kick{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:8px}
.l-title{margin:0 0 14px;font-size:clamp(22px,3.4vw,30px);line-height:1.12;font-weight:800;letter-spacing:-.015em;color:var(--ink-2)}
.l-desc{margin:0 0 26px;color:#2a2a2a;font-size:16.5px;line-height:1.62}

.section-label{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  font-weight:700;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);
}

/* chapters */
.chapters{margin:0 0 30px}
.chapter{
  display:flex;align-items:baseline;gap:14px;width:100%;text-align:left;
  appearance:none;background:none;border:0;cursor:pointer;font-family:inherit;
  padding:11px 10px;border-radius:8px;color:var(--ink);
  border-bottom:1px solid var(--line);
  transition:background .12s ease;
}
.chapter:last-child{border-bottom:0}
.chapter:hover{background:var(--hover)}
.chapter:focus-visible{outline:2px solid var(--ink-2);outline-offset:-2px}
.ch-time{
  flex:0 0 auto;min-width:52px;font-variant-numeric:tabular-nums;
  font-weight:700;font-size:14.5px;color:var(--ink-2);letter-spacing:.01em;
}
.ch-title{flex:1 1 auto;font-size:15.5px;line-height:1.4}

/* task */
.task{
  border:1px solid var(--line-2);border-left:4px solid var(--ink-2);
  border-radius:10px;padding:20px 22px;margin:0 0 8px;background:#fafafa;
}
.task-label{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--ink-2);margin:0 0 12px}
.task .no-task{color:var(--muted);font-size:15px;margin:0}
.task-items{list-style:none;margin:0;padding:0}
.task-items li{display:flex;gap:12px;align-items:baseline;padding:12px 0;border-top:1px solid var(--line)}
.task-items li:first-child{border-top:0;padding-top:0}
.task-jump{
  flex:0 0 auto;appearance:none;cursor:pointer;font-family:inherit;
  font-variant-numeric:tabular-nums;font-weight:700;font-size:13px;
  color:var(--ink-2);background:#fff;border:1px solid var(--line-2);
  border-radius:999px;padding:3px 9px;line-height:1.2;min-width:52px;text-align:center;
  transition:background .12s ease,color .12s ease;
}
.task-jump:hover{background:var(--ink-2);color:#fff;border-color:var(--ink-2)}
.task-jump:focus-visible{outline:2px solid var(--ink-2);outline-offset:2px}
.task-text{flex:1 1 auto;font-size:15.5px;line-height:1.5}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.site-foot .wrap{padding:26px 20px 40px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-foot a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-2)}
.site-foot a:hover{border-bottom-color:var(--ink-2)}

/* узкие экраны */
@media(max-width:560px){
  .site-head .wrap{padding-top:20px;padding-bottom:18px}
  .stage{padding:22px 0 56px}
  .day-tab{margin-right:20px;padding:14px 2px;font-size:14px}
  .day-tab small{display:none}
  .l-desc{font-size:16px}
  .task{padding:18px}
  .site-foot .wrap{flex-direction:column;gap:6px}
}

/* reduce motion */
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}