/* ============================================================
   Persona landing — styles
   Принципы из скиллов:
   - анимируем только transform/opacity (scroll-experience, gsap)
   - glassmorphism через backdrop-filter
   - mobile-first + clamp() типографика (responsive)
   - prefers-reduced-motion полностью гасит движение (a11y)
   ============================================================ */

/* ---------- tokens ---------- */
:root{
  --bg:#07070d;
  --bg-soft:#0c0c17;
  --ink:#eef0ff;
  --ink-dim:#a6a8c8;
  --ink-faint:#6f7196;

  --violet:#8b5cf6;
  --cyan:#22d3ee;
  --pink:#f472b6;

  --grad: linear-gradient(110deg,#a78bfa 0%,#22d3ee 50%,#f472b6 100%);
  --glass-bg: rgba(255,255,255,.05);
  --glass-brd: rgba(255,255,255,.12);

  --radius:22px;
  --maxw:1180px;
  --ease: cubic-bezier(.16,.84,.34,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
/* overflow-x:clip клипит горизонтальный вылет, но (в отличие от hidden)
   НЕ делает body скролл-контейнером → position:sticky продолжает работать
   (нужно для закреплённого оглавления статьи). */
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;
}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ---------- утилиты ---------- */
.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.glass{
  background:var(--glass-bg);
  border:1px solid var(--glass-brd);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:0 12px 40px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.08);
}

/* skip link */
.skip-link{
  position:fixed;top:-60px;left:14px;z-index:1000;
  padding:10px 16px;border-radius:12px;background:#fff;color:#000;font-weight:600;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- фон: запечённые градиентные пятна (БЕЗ поэкранного blur каждый кадр) ----------
   Радиальные градиенты мягкие сами по себе → не нужен filter:blur, рисуется один раз,
   GPU-композитится. Это убирает и «кашу», и главный источник лагов. */
.bg-mesh{
  position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none;
  background:
    radial-gradient(900px 600px at -2% -10%, rgba(124,58,237,.46), transparent 56%),
    radial-gradient(860px 640px at 108% 0%, rgba(34,211,238,.30), transparent 54%),
    radial-gradient(820px 720px at 50% 124%, rgba(244,114,182,.26), transparent 58%),
    radial-gradient(560px 560px at 50% 40%, rgba(124,58,237,.22), transparent 62%),
    radial-gradient(130% 100% at 50% 0%, #0c0c1c 0%, #06060c 60%);
}
/* тонкая сетка-точки с радиальной маской — «дорого выглядит», дёшево рисуется (Linear/Vercel) */
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px, transparent 1.5px);
  background-size:30px 30px;
  -webkit-mask-image:radial-gradient(ellipse 82% 60% at 50% 24%, #000 30%, transparent 80%);
  mask-image:radial-gradient(ellipse 82% 60% at 50% 24%, #000 30%, transparent 80%);
}
.grain{
  position:fixed;inset:0;z-index:0;opacity:.035;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* hero 3d canvas сидит между mesh и контентом */
#hero-canvas{z-index:1;opacity:0;pointer-events:none;transition:opacity 1.2s var(--ease)}
#hero-canvas.ready{opacity:1}

/* CSS-fallback орб (если нет WebGL/reduced-motion) */
.hero-fallback{
  position:fixed;inset:0;z-index:1;display:none;place-items:center;pointer-events:none;
}
.hero-fallback::before{
  content:"";width:min(60vw,440px);aspect-ratio:1;border-radius:50%;
  background:conic-gradient(from 0deg,#a78bfa,#22d3ee,#f472b6,#a78bfa);
  filter:blur(36px);opacity:.7;
}
body.no-webgl #hero-canvas{display:none}
body.no-webgl .hero-fallback{display:grid}

/* ---------- прогресс-бар ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:900;background:rgba(255,255,255,.06);
}
#progress-bar{
  display:block;height:100%;width:0%;background:var(--grad);
  box-shadow:0 0 14px rgba(139,92,246,.6);
}

/* ---------- навигация ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:800;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(16px,4vw,42px);
  transition:background .4s var(--ease),backdrop-filter .4s var(--ease),padding .4s var(--ease);
}
.nav.scrolled{
  background:rgba(8,8,16,.6);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);padding-top:12px;padding-bottom:12px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.brand-dot{width:12px;height:12px;border-radius:50%;background:var(--grad);box-shadow:0 0 16px var(--violet)}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2.4vw,30px);font-size:.94rem;color:var(--ink-dim)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{
  padding:9px 18px;border-radius:999px;color:var(--ink)!important;
  background:var(--glass-bg);border:1px solid var(--glass-brd);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.nav-cta:hover{border-color:var(--violet)}
@media(max-width:680px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- общий layout секций ---------- */
section{position:relative;z-index:2;padding-inline:clamp(16px,5vw,40px)}
.section-title{
  font-size:clamp(1.9rem,5vw,3.4rem);font-weight:800;letter-spacing:-.03em;line-height:1.05;
}
.section-lead{color:var(--ink-dim);font-size:clamp(1rem,2.2vw,1.2rem);max-width:46ch;margin-top:14px}
.eyebrow{
  text-transform:uppercase;letter-spacing:.22em;font-size:.74rem;font-weight:600;
  color:var(--cyan);margin-bottom:18px;
}

/* ---------- HERO ---------- */
.hero{
  min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding-top:80px;
}
/* мягкий скрим для читабельности текста поверх 3D (между canvas и текстом) */
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(ellipse 48% 42% at 50% 44%,rgba(7,7,13,.62),transparent 72%);
}
.hero-inner{max-width:860px;display:flex;flex-direction:column;align-items:center;will-change:transform,opacity;position:relative}
.hero-title{text-shadow:0 2px 34px rgba(7,7,13,.55)}
.hero-sub{text-shadow:0 2px 20px rgba(7,7,13,.9)}
.eyebrow{text-shadow:0 1px 12px rgba(7,7,13,.85)}
.hero-title{
  font-size:clamp(2.6rem,9vw,6.2rem);font-weight:850;letter-spacing:-.04em;line-height:.98;
}
.hero-title .line{display:block}
.hero-sub{
  margin-top:24px;font-size:clamp(1.05rem,2.6vw,1.4rem);color:var(--ink-dim);max-width:42ch;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:38px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:1rem;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  border:1px solid transparent;will-change:transform;
}
.btn-primary{background:var(--grad);color:#0a0a12;box-shadow:0 10px 30px rgba(139,92,246,.45)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px rgba(139,92,246,.6)}
.btn-ghost{background:var(--glass-bg);border-color:var(--glass-brd);color:var(--ink);backdrop-filter:blur(8px)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--violet)}
.btn-lg{padding:18px 38px;font-size:1.1rem}

.scroll-hint{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);
}
.scroll-hint i{width:1px;height:42px;background:linear-gradient(var(--ink-faint),transparent);animation:hintMove 1.8s var(--ease) infinite}
@keyframes hintMove{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- STATEMENT ---------- */
.statement{min-height:90vh;display:flex;align-items:center;justify-content:center;text-align:center}
.big-statement{
  font-size:clamp(1.8rem,6.5vw,4.6rem);font-weight:800;letter-spacing:-.03em;line-height:1.08;max-width:16ch;
}
.big-statement .w{display:inline-block;will-change:transform,opacity}

/* ---------- FEATURES ---------- */
.features{padding-block:clamp(80px,12vh,160px);max-width:var(--maxw);margin-inline:auto}
.features-head{margin-bottom:clamp(36px,6vh,70px);max-width:640px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.card{
  padding:30px 28px;border-radius:var(--radius);will-change:transform,opacity;
  transition:transform .35s var(--ease),border-color .35s;
}
.card:hover{transform:translateY(-6px);border-color:rgba(167,139,250,.5)}
.card-ico{font-size:2rem;margin-bottom:16px;filter:drop-shadow(0 4px 14px rgba(139,92,246,.5))}
.card h3{font-size:1.32rem;font-weight:700;letter-spacing:-.02em;margin-bottom:10px}
.card p{color:var(--ink-dim);font-size:.98rem}
.card:first-child{grid-column:span 1}
@media(min-width:900px){
  .card:nth-child(1),.card:nth-child(2){grid-column:span 3}
  .card:nth-child(3),.card:nth-child(4),.card:nth-child(5){grid-column:span 2}
  .cards{grid-template-columns:repeat(6,1fr)}
}

/* ---------- HOW ---------- */
.how{padding-block:clamp(80px,12vh,160px);max-width:var(--maxw);margin-inline:auto}
.how .section-title{margin-bottom:clamp(34px,6vh,64px)}
.steps{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.step{padding:30px 26px;border-radius:var(--radius);background:var(--bg-soft);border:1px solid rgba(255,255,255,.06);will-change:transform,opacity}
.step-n{font-size:.85rem;font-weight:700;color:var(--cyan);letter-spacing:.1em}
.step h3{font-size:1.5rem;font-weight:800;margin:10px 0 8px;letter-spacing:-.02em}
.step p{color:var(--ink-dim);font-size:.98rem}

/* ---------- PRIVACY ---------- */
.privacy{padding-block:clamp(80px,14vh,180px);display:flex;justify-content:center}
.privacy-card{max-width:760px;width:100%;padding:clamp(34px,5vw,64px);border-radius:var(--radius);text-align:center;will-change:transform,opacity}
.privacy-card h2{font-size:clamp(1.8rem,5vw,3rem);font-weight:800;letter-spacing:-.03em;margin-bottom:18px}
.privacy-card p{color:var(--ink-dim);font-size:clamp(1rem,2.2vw,1.18rem);max-width:52ch;margin-inline:auto}
.check{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px}
.check li{
  padding:10px 18px;border-radius:999px;font-size:.9rem;color:var(--ink);
  background:rgba(255,255,255,.04);border:1px solid var(--glass-brd);
}
.check li::before{content:"✓ ";color:var(--cyan);font-weight:700}

/* ---------- CTA ---------- */
.cta{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding-block:120px}
.cta-inner{max-width:680px;will-change:transform,opacity}
.cta h2{font-size:clamp(2rem,6vw,4rem);font-weight:850;letter-spacing:-.04em;line-height:1.02}
.cta p{color:var(--ink-dim);font-size:clamp(1.05rem,2.4vw,1.3rem);margin:18px 0 36px}

/* ---------- footer ---------- */
.footer{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  padding:30px clamp(16px,5vw,40px);color:var(--ink-faint);font-size:.86rem;
  border-top:1px solid rgba(255,255,255,.06);position:relative;z-index:2;
}

/* ---------- reveal (стартовое скрытое состояние; снимается JS) ---------- */
.js .reveal,.js [data-card]{opacity:0;transform:translateY(34px)}
.js .big-statement .w{opacity:0;transform:translateY(40px)}

/* ---------- welcome-back (залогинен) ---------- */
.welcome-back{
  margin-top:34px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:center;
  padding:14px 22px;border-radius:999px;font-size:.98rem;
}
.welcome-back b{color:var(--ink)}
.logout-inline{display:inline}
.linklike{background:none;border:none;color:var(--ink-faint);cursor:pointer;font:inherit;text-decoration:underline;padding:0}
.linklike:hover{color:var(--ink)}

/* ---------- COMPARE ---------- */
.compare{padding-block:clamp(80px,12vh,160px);max-width:var(--maxw);margin-inline:auto}
.compare .section-title{margin-bottom:8px}
.compare-table{margin-top:34px;overflow-x:auto;border-radius:var(--radius);border:1px solid var(--glass-brd)}
.compare-table table{width:100%;border-collapse:collapse;min-width:640px;font-size:.95rem}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06)}
.compare-table thead th{background:rgba(255,255,255,.03);font-weight:700;color:var(--ink-dim)}
.compare-table th.hi,.compare-table td.hi{
  background:linear-gradient(180deg,rgba(139,92,246,.16),rgba(34,211,238,.06));
  color:var(--ink);font-weight:600;
}
.compare-table thead th.hi{color:#c4b5fd}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table td:first-child{color:var(--ink-dim)}

/* ---------- footer links ---------- */
.footer-links a{transition:color .2s}
.footer-links a:hover{color:var(--accent-400,#a78bfa)}

/* ---------- градиентная рамка + glow у карточек (современно, дёшево) ---------- */
.card{position:relative;overflow:hidden}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(155deg,rgba(167,139,250,.6),rgba(34,211,238,.22) 42%,transparent 72%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask-composite:exclude;opacity:.5;transition:opacity .35s var(--ease);pointer-events:none;
}
.card:hover{box-shadow:0 22px 60px rgba(124,58,237,.28),inset 0 1px 0 rgba(255,255,255,.1)}
.card:hover::after{opacity:1}

/* ---------- быстрый вход по ссылке ---------- */
.quick-magic{display:flex;gap:10px;margin-top:24px;max-width:460px;width:100%;flex-wrap:wrap;justify-content:center}
.quick-magic input{
  flex:1;min-width:210px;padding:13px 18px;border-radius:999px;color:var(--ink);font-size:1rem;outline:none;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-brd);transition:border-color .2s;
}
.quick-magic input::placeholder{color:var(--ink-faint)}
.quick-magic input:focus{border-color:var(--violet)}
.quick-magic .btn{white-space:nowrap}
.quick-hint{margin-top:10px;font-size:.88rem;color:var(--ink-faint);min-height:1.1em}
.quick-hint a{color:var(--accent-400,#a78bfa);text-decoration:underline;cursor:pointer}

/* ---------- hero-чипы ---------- */
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:30px;max-width:560px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border-radius:999px;
  font-size:.85rem;color:var(--ink-dim);background:rgba(255,255,255,.045);
  border:1px solid var(--glass-brd);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:transform .25s var(--ease),border-color .25s;
}
.chip:hover{transform:translateY(-2px);border-color:rgba(167,139,250,.5)}
.chip b{color:var(--ink);font-weight:600}

/* ---------- стат-бэнд ---------- */
.stats{
  max-width:var(--maxw);margin:0 auto;padding-block:clamp(40px,7vh,90px);
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;text-align:center;
}
.stat{padding:26px 16px;border-radius:var(--radius);will-change:transform,opacity}
.stat .num{font-size:clamp(1.9rem,4.4vw,3rem);font-weight:850;letter-spacing:-.03em;line-height:1}
.stat .lbl{color:var(--ink-dim);font-size:.92rem;margin-top:8px}

/* ---------- тех-строка ---------- */
.tech{
  max-width:var(--maxw);margin:0 auto;padding-block:26px;
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:center;
  color:var(--ink-faint);font-size:.92rem;
  border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);
}
.tech .t-lbl{text-transform:uppercase;letter-spacing:.2em;font-size:.7rem}
.tech b{color:var(--ink-dim);font-weight:600}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:640px){
  .hero{padding-top:96px}
  .blob{filter:blur(56px);opacity:.45}     /* меньше нагрузки на слабых мобилах */
  .glass{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
  .scroll-hint{display:none}
}

/* ============================================================
   REDUCED MOTION — гасим всё движение (a11y, web-performance)
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
  .js .reveal,.js [data-card],.js .big-statement .w{opacity:1!important;transform:none!important}
  #hero-canvas{display:none}
  .hero-fallback{display:grid}
  .blob{animation:none}
}

/* ============================================================
   LANDING V2 — Linear/Vercel-grade, без WebGL (быстро + плавно)
   ============================================================ */

/* герой: двухколоночный, текст слева */
.hero{min-height:auto;display:block;text-align:left;padding:140px clamp(16px,5vw,40px) 80px}
.hero::before{display:none}
.hero-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero-left{max-width:620px}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;text-transform:none;letter-spacing:.01em;
  font-family:ui-monospace,'SF Mono',Menlo,monospace;font-size:.8rem;font-weight:500;
  color:var(--cyan);background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.22);
  padding:6px 13px;border-radius:999px;margin-bottom:22px;
}
.dot-live{width:7px;height:7px;border-radius:50%;background:#22d3ee;animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,211,238,.5)}70%{box-shadow:0 0 0 7px rgba(34,211,238,0)}100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}}

.hero-title{font-size:clamp(2.6rem,6vw,4.6rem);font-weight:850;letter-spacing:-.04em;line-height:1.02;text-align:left;text-shadow:none}
.hero-title .line{display:block}
.hero-sub{margin-top:22px;font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--ink-dim);max-width:32ch;text-shadow:none}

/* единое поле email (объединяет вход/регистрацию) */
.hero-cta{
  display:flex;gap:8px;margin-top:30px;max-width:470px;width:100%;
  background:rgba(255,255,255,.04);border:1px solid var(--glass-brd);border-radius:999px;padding:6px;
  transition:border-color .2s,box-shadow .2s;
}
.hero-cta:focus-within{border-color:var(--violet);box-shadow:0 0 0 4px rgba(139,92,246,.15)}
.hero-cta input{flex:1;min-width:0;background:none;border:none;outline:none;color:var(--ink);font-size:1rem;padding:0 8px 0 16px}
.hero-cta input::placeholder{color:var(--ink-faint)}
.hero-cta .btn{white-space:nowrap;border-radius:999px}
.hero-cta-note{margin-top:12px;font-size:.85rem;color:var(--ink-faint)}
.hero-cta-note a{color:var(--accent-400,#a78bfa);text-decoration:underline}

.hero-chips{justify-content:flex-start;margin-top:26px;max-width:none}
.hero-chips .chip{padding:7px 13px;font-size:.82rem}

/* живое превью продукта (чат) */
.hero-preview{position:relative;perspective:1200px}
.preview{
  border-radius:18px;overflow:hidden;will-change:transform;
  animation:floaty 7s ease-in-out infinite;box-shadow:0 30px 80px rgba(0,0,0,.5);
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.preview-bar{display:flex;align-items:center;gap:7px;padding:12px 15px;border-bottom:1px solid var(--glass-brd);background:rgba(255,255,255,.03)}
.pb-dot{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.16)}
.pb-title{margin-left:10px;font-size:.82rem;color:var(--ink-faint);font-family:ui-monospace,monospace}
.preview-body{padding:18px;display:flex;flex-direction:column;gap:11px;background:rgba(8,8,16,.4)}
.msg{max-width:86%;padding:11px 14px;border-radius:14px;font-size:.92rem;line-height:1.5}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,#7c3aed,#6d28d9);color:#fff;border-bottom-right-radius:5px}
.msg.ai{align-self:flex-start;background:rgba(255,255,255,.06);border:1px solid var(--glass-brd);color:var(--ink);border-bottom-left-radius:5px}
.ai-tag{display:block;font-size:.68rem;color:var(--cyan);margin-bottom:5px;font-family:ui-monospace,monospace}
.msg.typing{display:flex;gap:5px;max-width:64px;align-items:center;justify-content:center}
.msg.typing span{width:7px;height:7px;border-radius:50%;background:var(--ink-faint);animation:blink 1.4s infinite both}
.msg.typing span:nth-child(2){animation-delay:.2s}
.msg.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
.preview-input{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-top:1px solid var(--glass-brd);color:var(--ink-faint);font-size:.9rem;background:rgba(255,255,255,.02)}
.preview-input kbd{background:rgba(255,255,255,.08);border-radius:6px;padding:2px 8px;font-size:.78rem;font-family:ui-monospace,monospace}
.preview-glow{position:absolute;top:-24px;bottom:-24px;left:0;right:0;z-index:-1;background:radial-gradient(circle at 60% 35%,rgba(124,58,237,.4),transparent 62%);filter:blur(46px)}

/* аврора — один дрейфующий блоб, transform-only (дёшево, плавно) */
.aurora{
  position:fixed;top:-28vh;left:50%;width:95vw;height:85vh;z-index:0;pointer-events:none;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(124,58,237,.20),transparent 70%);
  animation:drift 20s ease-in-out infinite;
}
@keyframes drift{0%,100%{transform:translateX(-55%) translateY(0)}50%{transform:translateX(-45%) translateY(5vh)}}

/* фичи: bento-сетка */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.bento .card{grid-column:span 2}
.bento .b-wide{grid-column:span 3}

/* адаптив v2 */
@media(max-width:900px){
  .hero{padding-top:118px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-preview{max-width:460px;width:100%}
  .hero-title{font-size:clamp(2.4rem,9vw,3.4rem)}
  .hero-sub{max-width:none}
  .scroll-hint{display:none}
}
@media(max-width:760px){
  .bento{grid-template-columns:1fr}
  .bento .card,.bento .b-wide{grid-column:auto}
}
@media (prefers-reduced-motion: reduce){
  .preview,.aurora,.dot-live{animation:none}
}

/* ============================================================
   ИНТЕРАКТИВ: чат-демо, 3D-наклон, кристалл, блог на главной
   ============================================================ */

/* рабочее поле чата */
.preview-input{gap:8px}
.preview-input input{
  flex:1;min-width:0;background:none;border:none;outline:none;color:var(--ink);
  font-size:.92rem;font-family:inherit;
}
.preview-input input::placeholder{color:var(--ink-faint)}
.preview-input button{
  background:rgba(255,255,255,.06);border:1px solid var(--glass-brd);border-radius:8px;
  padding:4px 6px;cursor:pointer;color:var(--ink-dim);transition:border-color .2s,color .2s;
}
.preview-input button:hover{border-color:var(--violet);color:var(--ink)}

/* кликабельные карточки + 3D-наклон */
[data-tilt]{transition:transform .25s var(--ease),box-shadow .35s,border-color .35s;transform-style:preserve-3d;will-change:transform}
a.card{text-decoration:none;color:inherit;cursor:pointer}
.card-link{display:inline-block;margin-top:14px;font-size:.86rem;color:var(--accent-400,#a78bfa);font-weight:600}
a.card:hover .card-link{text-decoration:underline}

/* секция 3D-кристалла */
.core3d{padding-block:clamp(70px,11vh,150px);text-align:center}
.core3d-inner{max-width:760px;margin:0 auto}
.core3d .section-lead{margin-inline:auto}
.core3d-stage{position:relative;margin-top:34px;display:flex;justify-content:center}
#crystal-canvas{width:min(86vw,440px);height:min(86vw,440px);cursor:grab;display:block}
#crystal-canvas.grabbing{cursor:grabbing}
.core3d-hint{
  position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);
  font-size:.8rem;color:var(--ink-faint);font-family:ui-monospace,monospace;
  transition:opacity .4s;pointer-events:none;
}

/* блог на главной */
.home-blog{max-width:var(--maxw);margin:0 auto;padding-block:clamp(70px,11vh,150px)}
.home-blog-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px}
.blog-all{color:var(--accent-400,#a78bfa);font-weight:600;white-space:nowrap}
.blog-all:hover{text-decoration:underline}
.home-posts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.hpost{display:flex;flex-direction:column;padding:24px 22px;border-radius:var(--radius);text-decoration:none;color:inherit;cursor:pointer}
.hpost .hpost-cover{font-size:1.8rem;margin-bottom:12px}
.hpost .hpost-cat{font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:var(--cyan)}
.hpost h3{font-size:1.18rem;font-weight:700;letter-spacing:-.02em;margin:8px 0 10px;line-height:1.3}
.hpost p{color:var(--ink-dim);font-size:.94rem;flex:1}
.hpost .hpost-meta{margin-top:14px;font-size:.82rem;color:var(--ink-faint)}
@media(max-width:820px){.home-posts{grid-template-columns:1fr}}

/* ---------- граф памяти на лендинге (Obsidian-стиль) ---------- */
.graph-sec{padding-block:clamp(70px,11vh,150px);text-align:center}
.graph-inner{max-width:var(--maxw);margin:0 auto}
.graph-sec .section-lead{margin-inline:auto}
.graph-stage{
  position:relative;margin:34px auto 0;width:100%;max-width:980px;height:clamp(360px,52vh,520px);
  border-radius:var(--radius);border:1px solid var(--glass-brd);overflow:hidden;
  background:radial-gradient(120% 120% at 50% 0%,rgba(124,58,237,.10),transparent 60%),rgba(8,8,18,.4);
}
#graph-canvas{display:block;width:100%;height:100%;cursor:default}
#graph-canvas.grabbing{cursor:grabbing}
.graph-stage .core3d-hint{position:absolute;bottom:12px;right:16px;left:auto;transform:none}
.graph-legend{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:18px;color:var(--ink-dim);font-size:.86rem}
.graph-legend span{display:inline-flex;align-items:center;gap:7px}
.graph-legend i{width:10px;height:10px;border-radius:50%;display:inline-block}

/* ============================================================
   ФИКС: прозрачные карточки иногда глючили — backdrop-filter
   плохо дружит с 3D-наклоном/анимацией (артефакты перерисовки).
   Делаем фон плотным и убираем backdrop-filter на крупных карточках.
   ============================================================ */
.card, .hpost, .stat, .preview, .privacy-card{
  backdrop-filter:none !important;
  -webkit-backdrop-filter:none !important;
}
.card, .hpost{ background:rgba(17,18,32,.78) }
.stat{ background:rgba(17,18,32,.6) }
.privacy-card{ background:rgba(15,16,28,.82) }
.preview{ background:rgba(12,12,22,.92) }
/* у наклоняемых карточек включаем сглаживание граней при transform */
[data-tilt]{ -webkit-backface-visibility:hidden; backface-visibility:hidden }

/* ---------- inline-авторизация на лендинге ---------- */
.pw-box{margin-top:10px;max-width:480px}
.pw-box form{display:flex;gap:8px;flex-wrap:wrap}
.pw-box input{
  flex:1;min-width:150px;padding:11px 16px;border-radius:999px;color:var(--ink);font-size:.95rem;outline:none;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-brd);transition:border-color .2s;
}
.pw-box input::placeholder{color:var(--ink-faint)}
.pw-box input:focus{border-color:var(--violet)}
.pw-box .btn{border-radius:999px;white-space:nowrap}
.auth-msg{margin-top:12px;font-size:.9rem;padding:10px 14px;border-radius:12px;max-width:480px;line-height:1.4}
.auth-msg.ok{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.35);color:#86efac}
.auth-msg.err{background:rgba(244,63,94,.12);border:1px solid rgba(244,63,94,.35);color:#fca5a5}
.auth-msg a{color:inherit;text-decoration:underline}