/* =========================================================
   Студия ИИ Автоматизации — Павел Новопольцев
   Neuro-style design system
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* surfaces */
  --bg:        #06090f;
  --bg-2:      #0a1020;
  --bg-3:      #0e1530;
  --panel:     rgba(255, 255, 255, 0.035);
  --panel-2:   rgba(255, 255, 255, 0.055);
  --border:    rgba(150, 170, 255, 0.12);
  --border-2:  rgba(150, 170, 255, 0.22);

  /* text */
  --text:      #eef1fb;
  --text-soft: #c4cce6;
  --muted:     #8794b5;
  --faint:     #5b6691;

  /* accents */
  --blue:   #4f7cff;
  --indigo: #6366f1;
  --purple: #a855f7;
  --cyan:   #2dd4bf;
  --sky:    #38bdf8;

  /* glows */
  --glow-blue:   rgba(79, 124, 255, 0.55);
  --glow-purple: rgba(168, 85, 247, 0.50);
  --glow-cyan:   rgba(45, 212, 191, 0.45);

  /* gradients */
  --grad-accent: linear-gradient(120deg, #4f7cff 0%, #7c5cff 48%, #a855f7 100%);
  --grad-cool:   linear-gradient(120deg, #38bdf8 0%, #6366f1 60%, #a855f7 100%);
  --grad-text:   linear-gradient(110deg, #ffffff 0%, #cdd6ff 40%, #9fb4ff 100%);

  /* layout */
  --maxw: 1200px;
  --radius: 20px;
  --radius-lg: 28px;
  --radius-sm: 14px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* page-wide ambient background ---------------------------------------- */
.bg-field {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -5%, rgba(99, 102, 241, 0.22), transparent 60%),
    radial-gradient(800px 700px at 8% 12%, rgba(56, 189, 248, 0.14), transparent 55%),
    radial-gradient(1000px 900px at 90% 95%, rgba(168, 85, 247, 0.16), transparent 60%),
    linear-gradient(180deg, #06090f 0%, #080d1b 50%, #06090f 100%);
}
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(120, 150, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 150, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 80%);
}
.bg-noise {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.glow-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  will-change: transform;
  opacity: 0.6;
}

/* =========================================================
   LAYOUT
   ========================================================= */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
section { position: relative; padding: 120px 0; }
.section-tight { padding: 84px 0; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--panel);
  backdrop-filter: blur(8px);
}
.kicker .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--glow-cyan);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.45;transform:scale(.8)} }

h1, h2, h3 { line-height: 1.04; letter-spacing: -0.02em; font-weight: 800; }
.h-section { font-size: clamp(30px, 4.4vw, 54px); margin-top: 22px; }
.h-section .grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--text-soft); font-size: clamp(16px, 1.6vw, 19px); max-width: 620px; margin-top: 18px; }
.section-head { margin-bottom: 56px; max-width: 760px; }
.accent-text {
  background: var(--grad-accent);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  padding: 15px 24px;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  color: #fff;
  background: var(--grad-accent);
  background-size: 160% 160%;
  box-shadow: 0 8px 30px -8px var(--glow-blue), inset 0 1px 0 rgba(255,255,255,0.25);
  animation: btnflow 6s ease infinite;
}
@keyframes btnflow { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 44px -10px var(--glow-blue), 0 0 0 1px rgba(124,124,255,.4), inset 0 1px 0 rgba(255,255,255,0.3);
}

.btn-ghost {
  color: var(--text);
  background: var(--panel-2);
  border-color: var(--border-2);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.08);
  border-color: rgba(45,212,191,0.5);
  box-shadow: 0 12px 36px -12px var(--glow-cyan);
}
.btn-sm { padding: 11px 18px; font-size: 14px; }

.btn .ico-tg, .btn .ico-max { width: 18px; height: 18px; }

/* =========================================================
   HEADER / NAV
   ========================================================= */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all .4s var(--ease);
  padding: 18px 0;
}
.header.scrolled {
  padding: 11px 0;
  background: rgba(8, 12, 22, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center;
  background: var(--grad-accent);
  box-shadow: 0 6px 22px -6px var(--glow-blue), inset 0 1px 0 rgba(255,255,255,.3);
  font-weight: 800; font-size: 18px; color: #fff;
  position: relative; overflow: hidden;
}
.brand-name { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name b { font-size: 14.5px; font-weight: 800; letter-spacing: -.01em; white-space: nowrap; }
.brand-name span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--muted); text-transform: uppercase; white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: var(--text-soft); text-decoration: none; font-size: 14.5px; font-weight: 500;
  padding: 9px 15px; border-radius: 100px; transition: all .25s var(--ease); white-space: nowrap;
}
.nav-links a:hover { color: #fff; background: var(--panel-2); }
.nav-links a.active { color: #fff; background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--border); }
.nav-cta { display: flex; align-items: center; gap: 10px; }

.burger { display: none; width: 44px; height: 44px; border: 1px solid var(--border-2); background: var(--panel); border-radius: 12px; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s var(--ease); }
.burger span:nth-child(1){ top: 16px; } .burger span:nth-child(2){ top: 21px; } .burger span:nth-child(3){ top: 26px; }
.burger.open span:nth-child(1){ top: 21px; transform: rotate(45deg); }
.burger.open span:nth-child(2){ opacity: 0; }
.burger.open span:nth-child(3){ top: 21px; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 99;
  background: rgba(6,9,15,0.96); backdrop-filter: blur(20px);
  display: flex; flex-direction: column; justify-content: center; gap: 8px; padding: 0 28px;
  transform: translateY(-100%); opacity: 0; pointer-events: none;
  transition: all .45s var(--ease);
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a { color: var(--text); text-decoration: none; font-size: 26px; font-weight: 700; padding: 14px 0; border-bottom: 1px solid var(--border); }
.mobile-menu .m-cta { display: flex; flex-direction: column; gap: 12px; margin-top: 26px; }
.mobile-menu .m-cta .btn { justify-content: center; }

/* =========================================================
   GLASS CARD
   ========================================================= */
.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease), background .4s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(124,124,255,0.14), transparent 45%);
  opacity: 0; transition: opacity .4s var(--ease); pointer-events: none;
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-2);
  background: var(--panel-2);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7), 0 0 0 1px rgba(124,124,255,0.10);
}
.card:hover::before { opacity: 1; }

.card-ico {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(79,124,255,0.18), rgba(168,85,247,0.12));
  border: 1px solid var(--border-2);
  margin-bottom: 20px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.card:hover .card-ico { transform: translateY(-2px) scale(1.04); box-shadow: 0 10px 26px -10px var(--glow-blue); }
.card-ico svg { width: 26px; height: 26px; stroke: var(--text); }
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.6; }
.card .idx { position: absolute; top: 22px; right: 24px; font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .1em; }

/* =========================================================
   REVEAL ANIMATIONS  (JS rAF-driven — preview freezes CSS anim clock)
   ========================================================= */
.js .reveal { opacity: 0; transform: translateY(28px); will-change: opacity, transform; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1 !important; transform: none !important; } }

/* =========================================================
   GRIDS
   ========================================================= */
.grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

/* footer ------------------------------------------------ */
.footer { padding: 56px 0 40px; border-top: 1px solid var(--border); position: relative; }
.footer-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; flex-wrap: wrap; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); margin-bottom: 14px; font-family: var(--mono); font-weight: 500; }
.footer-col a, .footer-col p { display: block; color: var(--text-soft); text-decoration: none; font-size: 14.5px; margin-bottom: 9px; transition: color .25s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 13px; font-family: var(--mono); }

/* chips ------------------------------------------------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 20px; border-radius: 100px;
  background: var(--panel); border: 1px solid var(--border);
  font-size: 15px; font-weight: 600; color: var(--text-soft);
  transition: all .3s var(--ease); backdrop-filter: blur(10px);
}
.chip:hover { color: #fff; border-color: var(--border-2); transform: translateY(-3px); background: var(--panel-2); box-shadow: 0 14px 30px -16px var(--glow-purple); }
.chip .d { width: 8px; height: 8px; border-radius: 50%; background: var(--grad-accent); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
/* =========================================================
   HERO
   ========================================================= */
.hero { padding: 168px 0 90px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-title { font-size: clamp(38px, 5.6vw, 70px); line-height: 1.02; }
.hero-sub { color: var(--text-soft); font-size: clamp(16px, 1.8vw, 20px); margin-top: 24px; max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-note {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 24px;
  color: var(--muted); font-size: 14.5px; max-width: 480px;
}
.hero-note svg { color: var(--cyan); flex: none; }

.hero-visual { position: relative; }
.neural-panel {
  position: relative; aspect-ratio: 1/1; width: 100%;
  border-radius: var(--radius-lg);
  background: radial-gradient(120% 120% at 30% 0%, rgba(99,102,241,0.18), rgba(8,12,22,0.6) 60%);
  border: 1px solid var(--border-2);
  overflow: hidden;
  box-shadow: 0 50px 90px -50px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.08);
}
.neural-panel::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 80% 90%, rgba(168,85,247,0.22), transparent 60%),
    radial-gradient(50% 40% at 10% 20%, rgba(45,212,191,0.18), transparent 60%);
}
#neural { position: absolute; inset: 0; width: 100%; height: 100%; }
.hud {
  position: absolute; top: 22px; left: 22px; z-index: 2;
  background: rgba(8,12,22,0.55); border: 1px solid var(--border);
  border-radius: 14px; padding: 14px 16px; backdrop-filter: blur(10px);
  font-family: var(--mono); font-size: 12px; min-width: 190px;
}
.hud-row { display: flex; justify-content: space-between; gap: 18px; padding: 3px 0; }
.hud-k { color: var(--muted); }
.hud-v { color: var(--text-soft); }
.hud-v.ok { color: var(--cyan); }
.float-chip {
  position: absolute; z-index: 2;
  padding: 10px 16px; border-radius: 100px;
  background: rgba(12,18,32,0.72); border: 1px solid var(--border-2);
  font-size: 13.5px; font-weight: 600; color: var(--text);
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 30px -12px rgba(0,0,0,0.6);
  animation: floaty 6s ease-in-out infinite;
}
.fc1 { bottom: 16%; left: 7%; animation-delay: 0s; }
.fc2 { bottom: 9%; right: 7%; animation-delay: 1.2s; }
.fc3 { top: 30%; right: 6%; animation-delay: 2.1s; }
.fc4 { top: 46%; left: 8%; animation-delay: .6s; }
@keyframes floaty { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-12px) } }

.hero-marquee {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-top: 64px; padding-top: 30px; border-top: 1px solid var(--border);
  font-size: 15px; color: var(--muted); font-weight: 500;
}
.hero-marquee i { width: 5px; height: 5px; border-radius: 50%; background: var(--border-2); flex: none; }
.hero-marquee span { transition: color .3s; }
.hero-marquee span:hover { color: var(--text); }

/* =========================================================
   ABOUT
   ========================================================= */
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.about-portrait { position: relative; }
.portrait-frame {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-2);
  box-shadow: 0 50px 100px -50px rgba(0,0,0,0.9), 0 0 0 1px rgba(124,124,255,0.06);
}
.portrait-frame img { width: 100%; display: block; }
.portrait-glow {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(70% 60% at 75% 40%, rgba(45,212,191,0.14), transparent 60%);
  mix-blend-mode: screen;
}
.portrait-badge {
  position: absolute; left: 18px; bottom: 18px; right: 18px;
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px; border-radius: 14px;
  background: rgba(8,12,22,0.7); border: 1px solid var(--border-2);
  backdrop-filter: blur(12px); font-size: 14px; font-weight: 600;
}
.portrait-badge .d { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--glow-cyan); flex: none; }
.about-points { display: flex; flex-direction: column; gap: 16px; margin: 30px 0; }
.ap { display: flex; gap: 16px; align-items: flex-start; }
.ap-num { font-family: var(--mono); font-size: 13px; color: var(--cyan); padding-top: 2px; flex: none; width: 28px; }
.ap p { color: var(--text-soft); font-size: 16px; }

/* =========================================================
   CTA PANEL
   ========================================================= */
.cta-panel {
  position: relative; overflow: hidden;
  border-radius: var(--radius-lg); padding: clamp(36px, 6vw, 72px);
  background: linear-gradient(140deg, rgba(20,28,55,0.85), rgba(10,14,28,0.85));
  border: 1px solid var(--border-2);
  text-align: center;
}
.cta-aura {
  position: absolute; inset: -2px; z-index: 0; pointer-events: none;
  background:
    radial-gradient(50% 60% at 20% 0%, rgba(79,124,255,0.28), transparent 60%),
    radial-gradient(50% 70% at 85% 100%, rgba(168,85,247,0.26), transparent 60%);
}
.cta-content { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.cta-content .lead { margin-left: auto; margin-right: auto; }
.cta-content .hero-actions { justify-content: center; }

@media (max-width: 1024px) {
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .g-3 { grid-template-columns: repeat(2, 1fr); }
  section { padding: 96px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 460px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-portrait { max-width: 460px; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta .btn span.hide-m { display: none; }
  .nav-cta { display: none; }
  .burger { display: block; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  section { padding: 74px 0; }
  .wrap { padding: 0 20px; }
  .card { padding: 24px; }
}

/* =========================================================
   PAGE 2
   ========================================================= */
.page-intro { padding: 158px 0 30px; }
.back-link {
  display: inline-block; font-family: var(--mono); font-size: 13px;
  color: var(--muted); text-decoration: none; margin-bottom: 22px;
  letter-spacing: .04em; transition: color .25s;
}
.back-link:hover { color: var(--cyan); }
.page-intro .kicker { margin-bottom: 22px; }

/* cases */
.case { display: flex; flex-direction: column; }
.case-preview {
  position: relative; height: 132px; border-radius: 14px; margin-bottom: 20px;
  overflow: hidden;
  background-image:
    repeating-linear-gradient(135deg, rgba(124,140,255,0.10) 0 10px, transparent 10px 20px);
  background-color: rgba(10,16,32,0.6);
  border: 1px solid var(--border);
  display: grid; place-items: center;
}
.case-preview span {
  font-family: var(--mono); font-size: 12px; letter-spacing: .08em;
  color: var(--muted); text-transform: lowercase;
  padding: 6px 12px; border: 1px dashed var(--border-2); border-radius: 100px;
  background: rgba(8,12,22,0.4);
}
.case-tag {
  align-self: flex-start; font-family: var(--mono); font-size: 11.5px;
  letter-spacing: .1em; text-transform: uppercase; color: var(--cyan);
  padding: 5px 11px; border-radius: 100px; border: 1px solid rgba(45,212,191,0.3);
  background: rgba(45,212,191,0.07); margin-bottom: 12px;
}
.case h3 { font-size: 19px; margin-bottom: 14px; }

/* schematic case visuals */
.case-preview { padding: 18px 20px; height: 168px; }
.schem { position: relative; width: 100%; height: 100%; }

/* 1 — chat / bot */
.schem-chat { display: flex; flex-direction: column; justify-content: center; gap: 11px; }
.schem-chat .bub { height: 17px; border-radius: 9px; border: 1px solid var(--border); }
.schem-chat .in { width: 56%; background: rgba(255,255,255,0.07); }
.schem-chat .out { width: 64%; align-self: flex-end; border: none; background: linear-gradient(90deg, var(--blue), var(--purple)); box-shadow: 0 6px 18px -8px var(--glow-blue); }
.schem-chat .short { width: 40%; }

/* 2 — funnel */
.schem-funnel { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; }
.schem-funnel span { height: 15px; border-radius: 5px; border: 1px solid var(--border-2); background: linear-gradient(90deg, rgba(79,124,255,0.5), rgba(168,85,247,0.42)); }
.schem-funnel em { width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--glow-cyan); margin-top: 2px; }

/* 3 — packaging / layered cards */
.schem-stack span { position: absolute; left: 50%; top: 50%; width: 56%; height: 74%; border-radius: 12px; border: 1px solid var(--border-2); background: var(--panel-2); }
.schem-stack span:nth-child(1) { transform: translate(-50%,-50%) rotate(-9deg) translateX(-18px); }
.schem-stack span:nth-child(2) { transform: translate(-50%,-50%) rotate(0deg); }
.schem-stack span:nth-child(3) { transform: translate(-50%,-50%) rotate(9deg) translateX(18px); background: linear-gradient(150deg, rgba(79,124,255,0.28), rgba(168,85,247,0.2)); }

/* 4 — presentation slides */
.schem-slides .s { position: absolute; border-radius: 9px; border: 1px solid var(--border-2); }
.schem-slides .back { left: 26%; top: 22%; width: 52%; height: 56%; background: var(--panel); transform: rotate(-6deg); }
.schem-slides .front { left: 20%; top: 28%; width: 60%; height: 56%; background: var(--panel-2); display: flex; flex-direction: column; gap: 7px; padding: 12px; }
.schem-slides .front i { display: block; height: 7px; border-radius: 4px; background: linear-gradient(90deg, var(--blue), var(--purple)); }
.schem-slides .front i:nth-child(2) { width: 70%; background: var(--border-2); }
.schem-slides .front i:nth-child(3) { width: 48%; background: var(--border-2); }

/* 5 — landing / browser */
.schem-web .win { position: absolute; inset: 8% 18%; border-radius: 12px; border: 1px solid var(--border-2); background: var(--panel); overflow: hidden; display: flex; flex-direction: column; }
.schem-web .bar { display: flex; gap: 5px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.schem-web .bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--border-2); }
.schem-web .hero { margin: 10px 12px 8px; height: 26px; border-radius: 6px; background: linear-gradient(120deg, rgba(79,124,255,0.4), rgba(168,85,247,0.3)); }
.schem-web .pill { margin: 0 12px; width: 42px; height: 12px; border-radius: 100px; background: var(--cyan); box-shadow: 0 0 12px var(--glow-cyan); }

/* 6 — AI node network */
.schem-net svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.schem-net circle { fill: #9fb4ff; }
.schem-net .hub { fill: var(--cyan); }
.schem-net line { stroke: rgba(110,150,255,0.45); stroke-width: 1; }
.case-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.case-list li { color: var(--muted); font-size: 14px; line-height: 1.55; padding-left: 16px; position: relative; }
.case-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--grad-accent); }
.case-list b { color: var(--text-soft); font-weight: 700; }

/* timeline */
.timeline {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  position: relative;
}
.tl-step {
  position: relative; padding: 26px; border-radius: var(--radius);
  background: var(--panel); border: 1px solid var(--border);
  backdrop-filter: blur(12px); transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease), background .4s var(--ease);
  display: flex; gap: 18px; align-items: flex-start;
}
.tl-step:hover { transform: translateY(-4px); border-color: var(--border-2); background: var(--panel-2); box-shadow: 0 26px 50px -28px rgba(0,0,0,.7); }
.tl-num {
  font-family: var(--mono); font-weight: 600; font-size: 15px;
  width: 46px; height: 46px; flex: none; border-radius: 12px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(150deg, rgba(79,124,255,0.25), rgba(168,85,247,0.18));
  border: 1px solid var(--border-2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12);
}
.tl-body h3 { font-size: 17px; margin-bottom: 6px; }
.tl-body p { color: var(--muted); font-size: 14px; line-height: 1.55; }

/* contacts */
.contacts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.contact-meta { display: flex; flex-direction: column; gap: 2px; margin-top: 30px; }
.cm { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.cm-k { font-family: var(--mono); font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cm-v { color: var(--text); font-weight: 600; font-size: 15px; text-decoration: none; }
a.cm-v:hover { color: var(--cyan); }
.contacts-cards { display: flex; flex-direction: column; gap: 14px; }
.contact-card {
  display: flex; align-items: center; gap: 18px; padding: 20px 22px;
  border-radius: var(--radius); text-decoration: none; color: var(--text);
  background: var(--panel); border: 1px solid var(--border);
  backdrop-filter: blur(12px); transition: all .4s var(--ease); position: relative; overflow: hidden;
}
.contact-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad-accent); opacity: .8;
}
.contact-card:hover { transform: translateX(4px); border-color: var(--border-2); background: var(--panel-2); box-shadow: 0 22px 46px -24px var(--glow-blue); }
.cc-ico {
  width: 52px; height: 52px; flex: none; border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(79,124,255,0.2), rgba(168,85,247,0.12));
  border: 1px solid var(--border-2);
}
.cc-ico svg { width: 24px; height: 24px; color: var(--text); }
.contact-card.tg .cc-ico { color: #38bdf8; }
.cc-body { display: flex; flex-direction: column; flex: 1; }
.cc-body b { font-size: 16px; }
.cc-body span { color: var(--muted); font-size: 13.5px; }
.cc-arrow { color: var(--muted); font-size: 20px; transition: transform .35s var(--ease), color .35s; }
.contact-card:hover .cc-arrow { transform: translateX(5px); color: var(--cyan); }

@media (max-width: 1024px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .contacts-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 720px) {
  .timeline { grid-template-columns: 1fr; }
}