/* concepts.css — стили для холста концептов матрёшки */
:root{
  --bg:#15121c; --bg-2:#1c1826; --surface:#211c2e; --surface-2:#2a2438;
  --accent:#8B5CF6; --accent-soft:#a883ff; --accent-hover:#7c3aed;
  --gold:#C9A96E; --gold-soft:#e6cd9c;
  --text:#F5F0E8; --muted:#9a93a8; --border:rgba(201,169,110,0.22);
  --display:'Onest',-apple-system,sans-serif; --body:'Manrope',sans-serif;
  --r:16px; --r-sm:10px;
}
*{box-sizing:border-box}
.display{font-family:var(--display);font-weight:700;line-height:1.05;letter-spacing:-.015em;color:var(--text)}
.gold-grad{
  background:linear-gradient(120deg,var(--gold-soft),var(--gold) 45%,var(--accent-soft));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-family:var(--body);font-size:1.05rem;line-height:1.65;color:var(--muted);max-width:34em;margin:0}
.hero-sub.center{margin-inline:auto;text-align:center}
.section-label{font-family:var(--body);font-size:.72rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gold);display:block}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;
  font-family:var(--body);font-size:.95rem;font-weight:600;line-height:1;cursor:pointer;
  white-space:nowrap;transition:transform .15s,box-shadow .25s,background .2s,border-color .2s;border:1.5px solid transparent}
.btn-sm{padding:9px 16px;font-size:.82rem}
.btn-accent{background:linear-gradient(120deg,var(--accent),#9d6bff);color:#fff;
  box-shadow:0 0 0 0 rgba(139,92,246,.5),0 8px 24px -8px rgba(139,92,246,.7)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 0 22px -2px rgba(139,92,246,.75)}
.btn-ghost{background:rgba(255,255,255,.02);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-soft)}

/* hero shells */
.hero{position:relative;width:100%;height:100%;overflow:hidden;background:
  radial-gradient(120% 90% at 78% 28%,rgba(139,92,246,.16),transparent 55%),
  radial-gradient(80% 70% at 12% 90%,rgba(201,169,110,.07),transparent 60%),
  var(--bg);color:var(--text);font-family:var(--body)}
.hx-nav{position:relative;z-index:3;display:flex;align-items:center;justify-content:space-between;
  padding:26px 46px}
.hx-logo{font-family:var(--display);font-size:1.5rem;font-weight:600;color:var(--gold);letter-spacing:.02em}
.hx-navlinks{display:flex;align-items:center;gap:26px}
.hx-navlinks a{font-size:.9rem;color:var(--muted);cursor:pointer}
.hx-navlinks a:hover{color:var(--text)}
.hx-eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:nowrap}
.hx-name{font-family:var(--display);font-size:1.05rem;font-weight:700;color:var(--gold);white-space:nowrap}
.hx-dot{color:var(--muted)}
.hx-role{font-size:.9rem;color:var(--muted)}
.hx-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

/* Hero A */
.hero-a-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;
  align-items:center;gap:30px;padding:24px 46px 56px;height:calc(100% - 84px)}
.hero-a .display{font-size:2.9rem;line-height:1.12;margin:0 0 20px}
.hero-a-art{display:flex;justify-content:center;align-items:center}

/* Hero B */
.hero-b-stage{position:relative;z-index:2;height:calc(100% - 84px);display:flex;
  flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:0 40px 40px}
.hero-b-nested{position:absolute;top:50%;left:50%;transform:translate(-50%,-54%);opacity:.5;z-index:-1}
.hero-b .display.hero-b-title{font-size:6rem;margin:0 0 18px}
.hero-b .hx-eyebrow{justify-content:center}
.hero-b .hx-actions{justify-content:center}

/* Hero C */
.hero-c-grid{position:relative;z-index:2;display:grid;grid-template-columns:.85fr 1.15fr;
  align-items:center;gap:20px;padding:0 56px 40px;height:calc(100% - 84px)}
.hero-c-glow{position:absolute;left:14%;top:46%;width:520px;height:520px;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(139,92,246,.4),transparent 62%);filter:blur(20px);z-index:1}
.hero-c-art{position:relative;z-index:2;display:flex;justify-content:center}
.hero-c .display.hero-c-title{font-size:5.2rem;margin:0 0 22px}

/* animations */
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.035)}}
@keyframes twinkle{0%,100%{opacity:.55}50%{opacity:1}}
@keyframes blink{0%,92%,100%{transform:scaleY(1)}96%{transform:scaleY(.1)}}
.mtr-float{animation:floaty 7s ease-in-out infinite}
.mtr-breathe{animation:breathe 6s ease-in-out infinite}
.mtr-eyes{transform-origin:100px 76px;animation:blink 6s ease-in-out infinite}
.bg-stars{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.9;
  background-image:radial-gradient(2.6px 2.6px at 18% 22%,#fff 0,#fff 38%,rgba(255,255,255,.2) 60%,transparent 100%),
   radial-gradient(2.4px 2.4px at 70% 16%,#f3dcae 0,#e6cd9c 42%,transparent 100%),
   radial-gradient(2.8px 2.8px at 82% 64%,#c8a6ff 0,#a883ff 42%,transparent 100%),
   radial-gradient(2.2px 2.2px at 32% 72%,#fff 0,#fff 42%,transparent 100%),
   radial-gradient(2.4px 2.4px at 55% 40%,#f3dcae 0,#e6cd9c 42%,transparent 100%),
   radial-gradient(2px 2px at 90% 32%,#fff 0,#fff 42%,transparent 100%),
   radial-gradient(2.2px 2.2px at 42% 12%,#c8a6ff 0,#a883ff 42%,transparent 100%),
   radial-gradient(2px 2px at 12% 54%,#fff 0,#fff 42%,transparent 100%);
  animation:twinkle 5s ease-in-out infinite}

/* ECOSYSTEM */
.eco{position:relative;width:100%;height:100%;overflow:hidden;font-family:var(--body);
  background:radial-gradient(110% 80% at 50% 0%,rgba(139,92,246,.12),transparent 55%),var(--bg);
  color:var(--text);display:flex;flex-direction:column;padding:48px 40px 36px}
.eco-head{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.eco-title{font-size:3.4rem;margin:8px 0 14px}
.eco-intro{color:var(--muted);font-size:1.02rem;line-height:1.6;margin:0 auto}
.eco-stage{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:30px;margin-top:8px}
.eco-toggle{font-family:var(--body);font-weight:600;font-size:.92rem;color:var(--gold-soft);
  background:rgba(201,169,110,.08);border:1.5px solid var(--border);border-radius:999px;
  padding:11px 24px;cursor:pointer;transition:all .2s}
.eco-toggle:hover{border-color:var(--gold);background:rgba(201,169,110,.16)}
.eco-closed{display:flex;flex-direction:column;align-items:center;gap:16px;cursor:pointer}
.eco-hint{font-family:var(--body);font-size:.82rem;letter-spacing:.03em;color:var(--muted)}
.eco-dolls{display:flex;align-items:flex-end;justify-content:center;gap:16px}
.eco-col{display:flex;flex-direction:column;align-items:center;width:222px;
  transform-origin:50% 100%;will-change:transform,opacity}
.eco-col-0{animation:spreadL 1.45s cubic-bezier(.2,.74,.24,1) .15s both}
.eco-col-1{animation:spreadM 1.2s cubic-bezier(.2,.74,.24,1) both}
.eco-col-2{animation:spreadR 1.45s cubic-bezier(.2,.74,.24,1) .15s both}
@keyframes spreadL{
  0%{opacity:0;transform:translateX(165px) translateY(6px) scale(.6)}
  55%{opacity:1}
  100%{opacity:1;transform:translateX(0) scale(1)}}
@keyframes spreadM{
  0%{opacity:0;transform:translateY(6px) scale(.58)}
  55%{opacity:1}
  100%{opacity:1;transform:scale(1)}}
@keyframes spreadR{
  0%{opacity:0;transform:translateX(-165px) translateY(6px) scale(.6)}
  55%{opacity:1}
  100%{opacity:1;transform:translateX(0) scale(1)}}
.eco-doll{display:flex;align-items:flex-end;justify-content:center;cursor:pointer}
.eco-card{width:218px;margin-top:16px;padding:15px 17px;border-radius:var(--r);
  background:linear-gradient(180deg,rgba(42,36,56,.9),rgba(33,28,46,.9));
  border:1px solid var(--border);box-shadow:0 16px 40px -16px rgba(0,0,0,.7);
  animation:cardIn .9s cubic-bezier(.2,.7,.25,1) both}
@keyframes cardIn{from{opacity:0;transform:translateY(22px) scale(.97)}to{opacity:1;transform:none}}
.eco-card-label{font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);opacity:.85}
.eco-card-title{font-family:var(--display);font-size:1.3rem;font-weight:600;margin:5px 0 7px}
.eco-card-desc{font-size:.86rem;color:var(--muted);line-height:1.5;margin:0 0 14px}
.eco-card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.eco-price{font-family:var(--display);font-size:1.05rem;font-weight:700;color:var(--gold-soft);white-space:nowrap}
.eco-caption{position:relative;z-index:2;text-align:center;color:var(--muted);font-size:.92rem;margin:8px 0 0}
.eco-caption em{color:var(--gold-soft)}

/* ─── Экосистема: адаптив ─── */
@media (max-width:760px){
  .eco{padding:42px 22px 32px}
  .eco-title{font-size:clamp(2rem,7vw,2.6rem)}
  .eco-intro{font-size:.95rem}
  .eco-dolls{flex-direction:column;align-items:center;gap:30px}
  .eco-col{width:100%;max-width:300px}
  .eco-col-0,.eco-col-1,.eco-col-2{animation:ecoUp .7s ease both}
  .eco-card{width:100%;max-width:300px}
}
@keyframes ecoUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}