:root {
  --bg: #0c0f14;
  --bg-2: #11151c;
  --surface: #151a23;
  --surface-2: #1a2130;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef1f6;
  --muted: #97a1b5;
  --accent: #8b7cf6;
  --accent-2: #22d3c5;
  --grad: linear-gradient(90deg, #8b7cf6, #22d3c5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.2; font-weight: 700; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 22px; letter-spacing: 0.5px; }
.logo span { color: var(--accent-2); }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-size: 15px; transition: color 0.2s; }
.nav a:hover { color: var(--text); }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s; }

/* Hero */
.hero {
  padding: 90px 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 10%, rgba(139, 124, 246, 0.14), transparent),
    radial-gradient(ellipse 50% 40% at 20% 90%, rgba(34, 211, 197, 0.08), transparent),
    var(--bg);
}
.hero__inner { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 56px; align-items: center; }
.badge {
  display: inline-block; font-size: 13px; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--accent-2); border: 1px solid rgba(34, 211, 197, 0.35);
  padding: 8px 16px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(40px, 6vw, 64px); margin-bottom: 20px; }
.hero h1 .grad { display: block; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--muted); font-size: 18px; max-width: 520px; }
.hero__actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 14px 28px; border-radius: 12px; font-weight: 600; font-size: 15px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 8px 24px rgba(139, 124, 246, 0.35); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(139, 124, 246, 0.45); }
.btn--ghost { border: 1px solid var(--line); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); }

.hero__media { display: flex; justify-content: center; }
.hero__photo {
  position: relative; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
  max-width: 300px;
}
.hero__photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }

/* Sections */
.section { padding: 90px 0; }
.h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 48px; max-width: 800px; }
.h2--stack { max-width: none; line-height: 1.25; }
.section__lead { color: var(--muted); font-size: 18px; max-width: 640px; margin: -28px 0 40px; }

/* About */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; }
.about__text {
  display: flex; flex-direction: column; justify-content: space-between;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 32px;
}
.about__text p { color: var(--muted); margin-bottom: 16px; font-size: 16px; }
.about__text p:last-of-type { margin-bottom: 24px; }
.about__list { display: grid; gap: 12px; }
.about__list li { position: relative; padding-left: 26px; color: var(--text); font-size: 15px; line-height: 1.45; }
.about__list li::before {
  content: ''; position: absolute; left: 0; top: 7px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--grad);
}
.about__cards { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: 1fr; gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px;
  display: flex; flex-direction: column;
  transition: border-color 0.2s;
}
.card:hover { border-color: rgba(139, 124, 246, 0.4); }
.card h3 { font-size: 16px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; line-height: 1.45; }

/* Advantages */
.advantages { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.adv { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.adv__num { font-size: 14px; font-weight: 700; color: var(--accent-2); letter-spacing: 1px; }
.adv h3 { font-size: 20px; margin: 12px 0 10px; }
.adv p { color: var(--muted); font-size: 15px; }

/* Works */
.works { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.work {
  display: flex; flex-direction: column; background: var(--surface);
  border: 1px solid var(--line); border-radius: 16px; padding: 28px;
}
.work__tag {
  align-self: flex-start; font-size: 12px; font-weight: 600; letter-spacing: 0.5px;
  color: var(--accent-2); background: rgba(34, 211, 197, 0.1);
  padding: 4px 12px; border-radius: 999px; margin-bottom: 16px;
}
.work h3 { font-size: 20px; margin-bottom: 10px; }
.work p { color: var(--muted); font-size: 15px; flex: 1; }

/* Contact */
.contact__inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  background: linear-gradient(145deg, rgba(139, 124, 246, 0.12), rgba(34, 211, 197, 0.06));
  border: 1px solid var(--line); border-radius: 24px; padding: 56px;
}
.contact__left .lead { margin-top: 16px; }
.contact__list li {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 20px; margin-bottom: 12px;
}
.contact__list span { color: var(--muted); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; }
.contact__list a { font-weight: 600; }
.contact__list a:hover { color: var(--accent-2); }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer p, .footer a { color: var(--muted); font-size: 14px; }
.footer a:hover { color: var(--text); }
.footer__links { display: flex; flex-wrap: wrap; gap: 8px 18px; }

.cookie {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 80;
  display: none; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 760px; margin: 0 auto; padding: 16px 18px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  color: var(--muted); font-size: 14px;
}
.cookie.show { display: flex; }
.cookie a { color: var(--accent-2); }
.cookie .btn { flex-shrink: 0; padding: 10px 18px; }

.doc { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; }
.doc h1 { font-size: clamp(28px, 4vw, 40px); margin: 8px 0 12px; }
.doc__meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.doc h2 { font-size: 20px; margin: 28px 0 10px; }
.doc p, .doc li { color: var(--muted); font-size: 15px; }
.doc ul { display: grid; gap: 8px; margin: 10px 0 16px; }
.doc li { position: relative; padding-left: 22px; }
.doc li::before {
  content: ''; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px; border-radius: 50%; background: var(--grad);
}
.doc a { color: var(--accent-2); }
.doc__note {
  margin-top: 32px; padding: 16px 18px; border: 1px solid var(--line);
  border-radius: 14px; background: rgba(139, 124, 246, 0.08); font-size: 14px;
}
.doc__back { display: inline-block; color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.doc__back:hover { color: var(--text); }

@media (max-width: 720px) {
  .cookie { flex-direction: column; align-items: stretch; }
}

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s, transform 0.6s; }
.reveal--visible { opacity: 1; transform: none; }

/* Mobile */
@media (max-width: 1100px) {
  .works { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 980px) {
  .hero__inner, .about, .contact__inner { grid-template-columns: 1fr; }
  .hero { padding: 60px 0; }
  .hero__media { order: -1; }
  .section { padding: 64px 0; }
}
@media (max-width: 720px) {
  .nav {
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px 0;
    transform: translateY(-130%); transition: transform 0.3s; z-index: 40;
  }
  .nav--open { transform: none; }
  .nav a { padding: 14px 24px; }
  .burger { display: block; }
  .about__cards, .advantages, .works { grid-template-columns: 1fr; grid-template-rows: none; }
  .contact__inner { padding: 32px 20px; }
  .contact__list li { flex-direction: column; align-items: flex-start; gap: 4px; }
}