/* Академия AI: космос, золото, оранжевый сигнальный. Светлая тема стеклянная с сеткой, тёмная почти чёрная. */
:root{
  --bg:#EDF0F5; --bg-2:#E3E8F0; --grid:rgba(24,38,62,.055);
  --panel:rgba(255,255,255,.66); --panel-solid:#FFFFFF; --panel-brd:rgba(255,255,255,.9); --line:rgba(24,38,62,.12);
  --ink:#111A26; --muted:#5A6576; --soft:rgba(24,38,62,.05);
  --signal:#F26A1B; --signal-2:#FF9A4D; --on-signal:#1B0E05;
  --gold:#F5C542; --gold-2:#FFE08A; --gold-ink:#7E5A00; --on-gold:#2A1E00;
  --ok:#1C8A5E; --bad:#D9501F;
  --shadow:0 1px 0 rgba(255,255,255,.7) inset,0 12px 32px -18px rgba(22,36,64,.28);
  --glow-a:rgba(245,197,66,.28); --glow-b:rgba(242,106,27,.14);
  --code-bg:#121A26; --code-ink:#E8ECF2;
  --display:"Unbounded","Golos Text",system-ui,sans-serif;
  --body:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#05070B; --bg-2:#080B12; --grid:rgba(255,255,255,.028);
  --panel:rgba(255,255,255,.035); --panel-solid:#0D1119; --panel-brd:rgba(255,255,255,.075); --line:rgba(255,255,255,.09);
  --ink:#ECEFF4; --muted:#8B95A4; --soft:rgba(255,255,255,.045);
  --signal:#FF7426; --signal-2:#FFA25A; --on-signal:#170A02;
  --gold:#F5C542; --gold-2:#FFE08A; --gold-ink:#F5C542; --on-gold:#1E1500;
  --ok:#4CD39C; --bad:#FF7A4A;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset,0 20px 44px -26px #000;
  --glow-a:rgba(245,197,66,.10); --glow-b:rgba(255,116,38,.07);
  --code-bg:#0B0F16; --code-ink:#E8ECF2; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#05070B; --bg-2:#080B12; --grid:rgba(255,255,255,.028);
  --panel:rgba(255,255,255,.035); --panel-solid:#0D1119; --panel-brd:rgba(255,255,255,.075); --line:rgba(255,255,255,.09);
  --ink:#ECEFF4; --muted:#8B95A4; --soft:rgba(255,255,255,.045);
  --signal:#FF7426; --signal-2:#FFA25A; --on-signal:#170A02;
  --gold:#F5C542; --gold-2:#FFE08A; --gold-ink:#F5C542; --on-gold:#1E1500;
  --ok:#4CD39C; --bad:#FF7A4A;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset,0 20px 44px -26px #000;
  --glow-a:rgba(245,197,66,.10); --glow-b:rgba(255,116,38,.07);
  --code-bg:#0B0F16; --code-ink:#E8ECF2; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);font:16px/1.6 var(--body);min-height:100vh;overflow-x:hidden;
  background:
    radial-gradient(900px 520px at 88% -8%,var(--glow-a),transparent 62%),
    radial-gradient(700px 480px at -10% 30%,var(--glow-b),transparent 60%),
    linear-gradient(var(--grid) 1px,transparent 1px) 0 0/32px 32px,
    linear-gradient(90deg,var(--grid) 1px,transparent 1px) 0 0/32px 32px,
    var(--bg);
  background-attachment:fixed}
a{color:inherit}
img{max-width:100%}
.beta{background:var(--ink);color:var(--bg);font:12px var(--mono);text-align:center;padding:6px max(16px,env(safe-area-inset-left,0px))}
.wrap{max-width:1180px;margin:0 auto;padding-block:16px 48px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.2;text-wrap:balance;margin:0}
h1{font-size:clamp(24px,4.2vw,36px);letter-spacing:-.01em} h2{font-size:18px} h3{font-size:16px}
.label{font:600 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.label.gold,.pill.gold{color:var(--gold-ink);border-color:var(--gold)}
.muted{color:var(--muted)} .small{font-size:14px} .ink{color:var(--ink)}
.link{font-size:14px;color:var(--muted);text-decoration:none}.link:hover{color:var(--ink)}

/* шапка */
header.top{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:10px 0 14px;border-bottom:1px solid var(--line);margin-bottom:22px}
.brand{font-family:var(--display);font-weight:700;font-size:19px;text-decoration:none;letter-spacing:.02em}
.brand small{display:block;font:500 11px var(--mono);letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.mainnav{display:flex;gap:4px;flex-wrap:wrap;font:600 12px var(--mono);letter-spacing:.08em;text-transform:uppercase}
.mainnav a{color:var(--muted);text-decoration:none;padding:7px 12px;border-radius:99px;transition:background .2s,color .2s,box-shadow .2s}
.mainnav a:hover{color:var(--ink);background:var(--panel)}
.mainnav a.on{color:var(--ink);background:var(--panel);box-shadow:0 0 0 1px var(--gold) inset,0 0 18px -6px var(--gold)}
.who{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.pill{font:600 12px var(--mono);border:1px solid var(--line);border-radius:99px;padding:6px 12px;text-decoration:none;white-space:nowrap}
.pill.score{background:var(--panel);box-shadow:0 0 16px -8px var(--gold)}
.theme-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-size:16px;cursor:pointer;transition:box-shadow .2s,transform .2s}
.theme-btn:hover{box-shadow:0 0 0 1px var(--gold),0 0 18px -4px var(--gold);transform:rotate(-12deg)}
@media (max-width:640px){header.top{gap:8px}.mainnav{order:3;width:100%;justify-content:space-between}.mainnav a{padding:6px 8px}}

/* стеклянные карточки */
.panel{background:var(--panel);border:1px solid var(--panel-brd);border-radius:16px;padding:20px;min-width:0;box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px) saturate(1.3);backdrop-filter:blur(14px) saturate(1.3)}
.stack{display:flex;flex-direction:column;gap:16px;min-width:0}
.stack.tight{gap:10px}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.grid2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;margin-bottom:18px}
.grid2.wide-left{grid-template-columns:minmax(0,1fr) 300px;align-items:start}
@media (max-width:900px){.grid2,.grid2.wide-left{grid-template-columns:minmax(0,1fr)}}
section.panel,section.block{margin-bottom:18px}
.hero{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;margin-bottom:18px}
.hero p{margin:8px 0}
.hello{margin:6px 0 22px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.hello p{margin:0}

/* кнопки: неон, перелив, бегущий блик, свечение при наведении */
.btn{position:relative;overflow:hidden;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font:600 15px/1.2 var(--body);letter-spacing:.01em;color:var(--on-signal);border:0;border-radius:12px;padding:13px 20px;cursor:pointer;text-decoration:none;text-align:center;
  background:linear-gradient(110deg,var(--signal) 0%,var(--signal-2) 40%,var(--gold) 55%,var(--signal-2) 70%,var(--signal) 100%);background-size:250% 100%;
  box-shadow:0 0 0 1px rgba(255,170,90,.55) inset,0 8px 22px -8px rgba(242,106,27,.75),0 0 26px -8px rgba(245,197,66,.6);
  animation:shine 7s linear infinite;transition:transform .2s ease,box-shadow .25s ease,filter .2s}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.55) 48%,transparent 66%);transform:translateX(-120%);animation:glint 3.8s ease-in-out infinite}
.btn:hover{transform:translateY(-2px);filter:saturate(1.15) brightness(1.04);
  box-shadow:0 0 0 1px rgba(255,200,120,.8) inset,0 14px 30px -10px rgba(242,106,27,.9),0 0 38px -6px rgba(245,197,66,.85)}
.btn:active{transform:translateY(0)}
.btn.big{font-size:16px;padding:15px 24px;border-radius:14px}
@keyframes shine{to{background-position:-250% 0}}
@keyframes glint{0%,55%{transform:translateX(-120%)}85%,100%{transform:translateX(120%)}}
.btn.gold{color:var(--on-gold);background:linear-gradient(110deg,#E9B10F 0%,var(--gold) 35%,var(--gold-2) 52%,var(--gold) 70%,#E9B10F 100%);background-size:250% 100%;
  box-shadow:0 0 0 1px rgba(255,236,170,.8) inset,0 8px 22px -8px rgba(233,177,15,.8),0 0 28px -8px rgba(245,197,66,.85)}
.btn.gold:hover{box-shadow:0 0 0 1px #FFF1C4 inset,0 14px 30px -10px rgba(233,177,15,.95),0 0 42px -4px rgba(245,197,66,.95)}
.btn.ghost{color:var(--ink);background:var(--panel);animation:none;border:1px solid var(--line);
  box-shadow:0 0 0 1px transparent inset,0 6px 18px -14px rgba(0,0,0,.5);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.btn.ghost::after{background:linear-gradient(100deg,transparent 35%,rgba(245,197,66,.22) 50%,transparent 65%);animation-duration:5.5s}
.btn.ghost:hover{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold) inset,0 10px 26px -14px rgba(0,0,0,.5),0 0 24px -8px var(--gold);filter:none}
.btn.done-ok{color:var(--gold-ink);background:var(--panel);animation:none;cursor:default;border:1px solid var(--gold);box-shadow:0 0 22px -10px var(--gold)}
.btn.done-ok::after{display:none}.btn.done-ok:hover{transform:none}
.chip{font:600 13px var(--body);border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:99px;padding:7px 13px;cursor:pointer;transition:box-shadow .2s,border-color .2s}
.chip:hover{border-color:var(--gold);box-shadow:0 0 16px -6px var(--gold)}
.chip:disabled{opacity:.5;cursor:default}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* звёзды: ячейки */
.slots{list-style:none;margin:8px 0 12px;padding:0;display:grid;grid-template-columns:repeat(var(--n,9),minmax(0,76px));gap:10px}
.slot a,.slot:not(:has(a)){position:relative;display:flex;align-items:center;justify-content:center;aspect-ratio:1;border:1.5px dashed var(--line);border-radius:12px;color:var(--muted);text-decoration:none;background:var(--soft);transition:transform .2s,box-shadow .2s,border-color .2s}
.slot a:hover{transform:translateY(-2px);border-color:var(--gold);box-shadow:0 0 18px -6px var(--gold)}
.slot svg{width:56%;height:56%;fill:none;stroke:var(--muted);stroke-width:1.2;stroke-dasharray:2 2;opacity:.6}
.slot .num{position:absolute;left:6px;top:3px;font:600 11px var(--mono);color:var(--muted)}
.slot.got a,.slot.got:not(:has(a)){border:1.5px solid var(--gold);background:radial-gradient(circle at 50% 45%,rgba(245,197,66,.38),transparent 70%),var(--soft);box-shadow:0 0 18px -8px var(--gold)}
.slot.got svg{fill:var(--gold);stroke:#B98500;stroke-width:.8;stroke-dasharray:none;opacity:1;filter:drop-shadow(0 0 5px rgba(245,197,66,.7))}
.slot.got .num{color:var(--gold-ink)}
.slot.cur a{outline:2px solid var(--signal);outline-offset:2px}
.slots.mini{grid-template-columns:repeat(var(--n,9),minmax(0,40px));gap:5px;margin:6px 0}
.slots.mini .slot a,.slots.mini .slot:not(:has(a)){border-radius:8px}
.slots.mini .num{font-size:9px;left:4px;top:1px}
@media (max-width:520px){.slots{gap:4px;grid-template-columns:repeat(var(--n,9),minmax(0,1fr))}.slot a,.slot:not(:has(a)){border-radius:8px}.slot .num{font-size:9px;left:3px;top:1px}}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.score-line{display:inline-flex;align-items:baseline;gap:8px;font:600 13px var(--mono);white-space:nowrap}
.score-line b{font:700 18px var(--display)}
.sc-star{color:var(--gold-ink)} .sc-dot{color:var(--muted)} .sc-pts b{color:var(--signal)}

/* курсы карточками */
.courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin-bottom:10px}
.ccard{display:flex;flex-direction:column;border-radius:18px;overflow:hidden;background:var(--panel);border:1px solid var(--panel-brd);box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:transform .25s,box-shadow .25s}
.ccard:not(.soon):hover{transform:translateY(-3px);box-shadow:var(--shadow),0 0 0 1px var(--gold),0 18px 40px -20px var(--signal)}
.cover{position:relative;aspect-ratio:16/9;background-size:cover;background-position:center;display:flex;align-items:flex-end;padding:14px 16px;overflow:hidden}
.cover:not(.has-img)::before{content:"";position:absolute;inset:0;opacity:.9;
  background-image:radial-gradient(1.2px 1.2px at 12% 22%,#fff,transparent),radial-gradient(1px 1px at 34% 68%,#fff,transparent),radial-gradient(1.4px 1.4px at 58% 18%,#fff,transparent),
  radial-gradient(1px 1px at 76% 52%,#fff,transparent),radial-gradient(1.3px 1.3px at 88% 14%,#fff,transparent),radial-gradient(1px 1px at 22% 84%,#fff,transparent),
  radial-gradient(1px 1px at 66% 86%,#fff,transparent),radial-gradient(1.1px 1.1px at 46% 40%,#fff,transparent)}
.cv-kosmodrom:not(.has-img){background:radial-gradient(120% 90% at 85% 110%,#FF7A2A 0%,rgba(255,122,42,.35) 30%,transparent 55%),radial-gradient(60% 60% at 80% 20%,rgba(245,197,66,.45),transparent 60%),linear-gradient(160deg,#0B1022,#141B3A 60%,#2A1A2E)}
.cv-centr:not(.has-img){background:radial-gradient(90% 80% at 20% 110%,rgba(62,170,255,.55),transparent 60%),radial-gradient(50% 50% at 85% 25%,rgba(120,230,255,.35),transparent 60%),linear-gradient(160deg,#07101C,#0E2236 60%,#10304A)}
.cv-galaktika:not(.has-img){background:radial-gradient(80% 70% at 70% 60%,rgba(190,90,255,.55),transparent 60%),radial-gradient(50% 40% at 25% 30%,rgba(255,96,180,.4),transparent 60%),linear-gradient(160deg,#0A0716,#1A0F33 60%,#2B0F3A)}
.cover.has-img{background-size:cover;background-position:center 60%;background-repeat:no-repeat}
.cover.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.25),transparent 35%)}
.cover .badge{z-index:1}
.cv-title{position:relative;font:700 clamp(18px,2.2vw,22px)/1.15 var(--display);color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.6)}
.badge{position:absolute;top:12px;left:12px;font:700 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;border-radius:99px;padding:5px 10px}
.badge.open{background:var(--gold);color:var(--on-gold);box-shadow:0 0 18px -2px rgba(245,197,66,.8)}
.badge.soon{background:rgba(10,12,20,.6);color:#fff;border:1px solid rgba(255,255,255,.35);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.cbody{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1;align-items:flex-start}
.cbody p{margin:0}
.cbody .btn{margin-top:auto}
.cstat{margin:4px 0 10px}
.ccard.soon .cover{filter:saturate(.75)}
.next-line{margin-top:auto!important;font:600 12px var(--mono);letter-spacing:.06em;color:var(--muted);border-top:1px dashed var(--line);padding-top:10px;width:100%}

/* автор */
.author{display:flex;gap:18px;align-items:center}
.ava{width:84px;height:84px;border-radius:50%;object-fit:cover;flex:none;border:2px solid var(--gold);box-shadow:0 0 24px -6px var(--gold)}
.ava-empty{display:flex;align-items:center;justify-content:center;font:700 24px var(--display);color:var(--on-gold);background:radial-gradient(circle at 35% 30%,var(--gold-2),var(--gold) 55%,#C98F00)}
.author p{margin:4px 0 0}

/* список уроков */
.lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.lessons a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;text-decoration:none;border:1px solid transparent;transition:background .2s,border-color .2s}
.lessons a:hover{background:var(--soft);border-color:var(--line)}
.lessons .n{font:700 13px var(--mono);width:30px;height:30px;flex:none;border-radius:8px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);color:var(--muted)}
.lessons .got .n{border-color:var(--gold);color:var(--gold-ink);box-shadow:0 0 12px -6px var(--gold)}
.lessons .t{flex:1;min-width:0;font-size:15px}
.lessons .st{display:flex;gap:8px;align-items:center;font-style:normal}
.lessons i{font-style:normal}
.lessons .star{color:var(--muted);font-size:16px}.lessons .got .star{color:var(--gold)}
.lessons .pts{font:600 12px var(--mono);color:var(--signal)}
/* совместимость: старые списки */
.legend{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-direction:column;gap:4px}
.legend li{display:flex;justify-content:space-between;gap:10px;font-size:14px}
.state{font:600 11px var(--mono);white-space:nowrap;color:var(--muted)}
.state.built{color:var(--ok)}
.stages{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.stages li{border:1px solid var(--line);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:2px;color:var(--muted)}

/* урок */
.crumbs{font-size:14px;color:var(--muted);margin-bottom:10px}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--ink)}
.lesson-head{margin-bottom:20px;display:flex;flex-direction:column;gap:8px}
.head-stats{display:flex;align-items:center;gap:8px 18px;flex-wrap:wrap}
.head-stats .slots{flex:1 1 280px;margin:0}
.why{font-size:17px;margin:4px 0 0;max-width:70ch}
.video{aspect-ratio:16/9;max-width:100%;border-radius:16px;overflow:hidden;background:#05070B;box-shadow:0 0 0 1px var(--line),0 24px 50px -28px rgba(0,0,0,.7)}
.video iframe{width:100%;height:100%;border:0}
.video-empty{display:flex;flex-direction:column;gap:4px;padding:16px 20px;border-radius:16px;background:linear-gradient(160deg,#0B1022,#141B3A);color:#E8ECF2}
.video-empty span{opacity:.8;max-width:46ch}
.pult{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center}
.pult .nav-prev{justify-self:start}.pult .nav-next{justify-self:end}
.pult form{margin:0}
@media (max-width:560px){.pult{grid-template-columns:1fr 1fr;grid-template-areas:"done done" "prev next"}
  .pult .nav-done{grid-area:done}.pult .nav-done .btn,.pult .btn.nav-done{width:100%}
  .pult .nav-prev{grid-area:prev;justify-self:stretch}.pult .nav-next{grid-area:next;justify-self:stretch}
  .pult .btn{padding:12px 12px;font-size:14px}}
.like-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0}
.like{font:600 14px var(--body);color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:99px;padding:9px 16px;cursor:pointer;transition:box-shadow .2s,border-color .2s,color .2s,transform .2s}
.like:hover{border-color:#FF5A7A;box-shadow:0 0 20px -6px #FF5A7A;transform:translateY(-1px)}
.like.on{color:#E8395E;border-color:#FF5A7A;box-shadow:0 0 18px -8px #FF5A7A}
.guide-card{display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;align-items:center;
  background:linear-gradient(135deg,rgba(245,197,66,.16),transparent 55%),var(--panel)}
.guide-card img{width:120px;aspect-ratio:3/4;object-fit:cover;object-position:top;border-radius:10px;border:1px solid var(--line);box-shadow:0 10px 24px -14px rgba(0,0,0,.6)}
.guide-card p{margin:0}
@media (max-width:460px){.guide-card{grid-template-columns:84px minmax(0,1fr);gap:14px}.guide-card img{width:84px}}
.mats{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column}
.mats li{display:flex;align-items:center;gap:12px;padding:10px 0;border-top:1px solid var(--line)}
.mats li:first-child{border-top:0}
.mats .ico{flex:none;width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font:700 10px var(--mono);letter-spacing:.04em;color:var(--signal);background:rgba(242,106,27,.1);border:1px solid rgba(242,106,27,.3)}
.mats .mt{flex:1;min-width:0;display:flex;flex-direction:column}
.mats .mt b{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mats .mt small{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mats .go{flex:none;font:600 13px var(--mono);color:var(--signal);text-decoration:none;padding:7px 12px;border-radius:99px;border:1px solid rgba(242,106,27,.35);transition:box-shadow .2s,background .2s}
.mats .go:hover{background:rgba(242,106,27,.1);box-shadow:0 0 18px -6px var(--signal)}
.sec-head{margin-bottom:0}
.task h3{margin:2px 0 6px}
.task p{margin:0 0 10px;max-width:68ch}
.task.done{border-color:rgba(245,197,66,.55);background:linear-gradient(135deg,rgba(245,197,66,.10),transparent 60%),var(--panel)}
.got-pts{font:700 13px var(--mono);color:var(--gold-ink);background:rgba(245,197,66,.16);border:1px solid var(--gold);border-radius:99px;padding:4px 10px}
.answer{margin:0;padding:10px 14px;border-left:3px solid var(--gold);background:var(--soft);border-radius:0 10px 10px 0;white-space:pre-wrap;font-size:15px}
details.sec{padding:0;overflow:hidden}
details.sec>summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;font:600 16px var(--display)}
details.sec>summary::-webkit-details-marker{display:none}
details.sec>summary i{font-style:normal;flex:none;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);font:600 16px var(--mono);color:var(--gold-ink);transition:transform .25s,box-shadow .2s}
details.sec>summary:hover i{box-shadow:0 0 14px -4px var(--gold);border-color:var(--gold)}
details.sec[open]>summary i{transform:rotate(45deg)}
details.sec>.prose,details.sec>.row,details.sec>#tr-text{padding:0 20px}
details.sec>.prose{padding-bottom:18px}
details.sec>.prose>:first-child{margin-top:0}
.prose{line-height:1.7;overflow-wrap:anywhere}
.prose h2,.prose h3{font-family:var(--display);font-size:17px;margin:20px 0 8px}
.prose p,.prose li{max-width:70ch}
.prose code{font-family:var(--mono);font-size:14px}
.prose pre{position:relative;background:var(--code-bg);color:var(--code-ink);border-radius:12px;padding:14px 16px;padding-top:42px;white-space:pre-wrap;word-break:break-word;font:14px/1.5 var(--mono);overflow-x:auto;box-shadow:0 0 0 1px var(--line)}
.prose pre code{font-size:14px;color:inherit}
.prose pre .cp{position:absolute;right:8px;top:8px;font:600 12px var(--mono);border:1px solid rgba(245,197,66,.5);background:rgba(245,197,66,.08);color:var(--gold-2);border-radius:99px;padding:4px 11px;cursor:pointer;transition:box-shadow .2s}
.prose pre .cp:hover{box-shadow:0 0 14px -4px var(--gold)}
.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;font-size:14px;margin:12px 0}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--soft)}
.prompt{font:14px/1.55 var(--mono);white-space:pre-wrap;background:var(--soft);border:1px dashed var(--line);border-radius:10px;padding:12px;margin:0;overflow-x:auto}
textarea,.field{width:100%;font:15px/1.5 var(--body);color:var(--ink);background:var(--panel-solid);border:1px solid var(--line);border-radius:12px;padding:11px 13px;transition:border-color .2s,box-shadow .2s}
textarea{min-height:96px;resize:vertical}
textarea:focus,.field:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(245,197,66,.22)}
textarea::placeholder{color:var(--muted);opacity:.8}
.field{font-size:16px;text-transform:uppercase}
.checks{border:0;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.check{display:flex;gap:10px;align-items:flex-start}
.check input{margin-top:5px;accent-color:var(--signal)}
.file{display:flex;flex-direction:column;gap:6px;font-size:14px}
.msg{padding:11px 14px;border-radius:12px;border:1px solid var(--line);margin:0;background:var(--panel)}
.msg.bad{border-color:var(--bad);color:var(--bad)} .msg.good{border-color:var(--ok);color:var(--ok)}
.tc{display:grid;grid-template-columns:52px minmax(0,1fr);gap:4px 10px;margin:8px 0 0;font-size:14px}
.tc dt{font:600 13px var(--mono);color:var(--signal)} .tc dd{margin:0}
.side details{border-top:1px solid var(--line);padding:9px 0}
.side summary{cursor:pointer;font-weight:600;font-size:14px}
.side details p{font-size:14px;margin:6px 0 0}
.side-score .score-line{margin:8px 0 2px}
details.hint summary{cursor:pointer;font-weight:600;font-size:14px}
#transkript .row{margin:0 0 8px}

/* гайды, вход, приглашения */
.guides{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.guide{display:flex;flex-direction:column;gap:8px}
.guide img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;border-radius:10px;border:1px solid var(--line)}
.guide h2{font-size:18px;margin:0}
.login{max-width:460px;margin:30px auto}
.tg-box{min-height:46px}
.reflink{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.reflink input{flex:1 1 240px;min-width:0;font:14px var(--mono);padding:11px 13px;border:1px solid var(--line);border-radius:12px;background:var(--panel-solid);color:var(--ink)}
.course-card.soon{opacity:.7}
.ui-note{display:inline-block;font:600 11px var(--mono);color:var(--muted);border:1px dashed var(--line);border-radius:4px;padding:0 6px;margin-left:4px}
footer{margin-top:36px;font-size:13px;color:var(--muted)}
.deck-embed{background:#070B16}

@media (prefers-reduced-motion:reduce){*,*::after{transition:none!important;animation:none!important}}
@media (max-width:520px){.mats .mt b,.mats .mt small{white-space:normal}.mats .go{padding:7px 10px}}

/* Телефон и планшет (проверка 01.11.2026): 16px в полях против автоприближения iOS, зоны нажатия от 44px на сенсорных экранах */
textarea,.field,.reflink input{font-size:16px}
.phone-only{display:none}
@media (pointer:coarse){
.mainnav a,header.top a.link,.pill{display:inline-flex;align-items:center;min-height:44px}
.theme-btn{width:44px;height:44px}
}
@media (max-width:640px) and (orientation:portrait){.phone-only{display:inline}}

/* Техподдержка: кнопка и окно в правом нижнем углу на всех страницах */
.sup{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));z-index:60;font-family:var(--body)}
.sup-btn{display:inline-flex;align-items:center;gap:8px;min-height:48px;padding:0 18px 0 8px;border:0;border-radius:999px;cursor:pointer;
  background:var(--signal);color:var(--on-signal);font:600 15px var(--body);box-shadow:0 10px 28px -10px rgba(0,0,0,.45)}
.sup-ico{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:rgba(0,0,0,.14);font:700 17px var(--display)}
.sup.open .sup-btn{display:none}
.sup-panel{width:min(380px,calc(100vw - 32px));height:min(540px,calc(100dvh - 32px));display:flex;flex-direction:column;
  background:var(--panel-solid);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px -20px rgba(0,0,0,.5);overflow:hidden}
.sup-panel[hidden]{display:none}
.sup-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.sup-head b{display:block;font:700 15px var(--display)}
.sup-head small{color:var(--muted);font-size:13px}
.sup-x{width:44px;height:44px;border:0;background:none;color:var(--muted);font-size:26px;cursor:pointer;border-radius:10px}
.sup-x:hover{background:var(--soft);color:var(--ink)}
.sup-log{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:8px}
.sup-m{max-width:85%;padding:9px 12px;border-radius:14px;font-size:15px;line-height:1.45;white-space:pre-wrap;overflow-wrap:anywhere}
.sup-m.ai{align-self:flex-start;background:var(--soft);color:var(--ink);border-bottom-left-radius:4px}
.sup-m.me{align-self:flex-end;background:var(--signal);color:var(--on-signal);border-bottom-right-radius:4px}
.sup-typing{color:var(--muted);font-style:italic}
.sup-form{display:flex;gap:8px;align-items:flex-end;padding:10px 12px 4px;border-top:1px solid var(--line)}
.sup-form textarea{flex:1;resize:none;min-height:44px;max-height:120px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;
  background:var(--bg);color:var(--ink);font-family:var(--body);line-height:1.4}
.sup-form .btn{min-height:44px;padding:0 14px}
.sup-note{margin:0;padding:2px 14px 10px;font-size:12px;color:var(--muted)}
@media (max-width:520px){.sup-lbl{display:none}.sup-btn{padding:0 8px}.sup-panel{width:calc(100vw - 32px);height:calc(100dvh - 32px)}}
@media print{.sup{display:none}}

/* Реквизиты ИП в подвале */
footer .rekv{display:block;margin-top:6px;font-size:12px}

/* Покупка курса */
.price b{font:700 30px var(--display)}
b.code{font-family:var(--mono);letter-spacing:.04em;user-select:all}

/* Видео урока со своего сервера */
.video video{display:block;width:100%;height:100%;background:#000}
.speed{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px}
.speed-b{min-height:36px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel-solid);color:var(--ink);font:600 14px var(--body);cursor:pointer}
.speed-b.on{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
@media (pointer:coarse){.speed-b{min-height:44px}}

/* Находки Тайного курсанта 01.11: заглушка презентации, «что за курс» на входе, кнопка поддержки не закрывает поля */
.deck-embed{position:relative;background:linear-gradient(160deg,#0B1022,#141B3A)}
.deck-embed::before{content:attr(data-loading);position:absolute;inset:0;display:grid;place-items:center;color:#AEB8D0;font:500 15px var(--body)}
.deck-embed iframe{position:relative;z-index:1}
.about-course{margin-top:8px;padding:14px 16px;border:1px dashed var(--line);border-radius:14px;display:flex;flex-direction:column;gap:10px}
.about-course p{margin:0;font-size:15px}
.sup.away .sup-btn{opacity:0;pointer-events:none}
@media (max-width:640px){body{padding-bottom:72px}}