:root {
  --bg: #05070d;
  --bg-secondary: #0b1020;
  --panel: rgba(12, 18, 34, 0.80);
  --panel-strong: rgba(10, 15, 30, 0.94);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --muted: #acb7d3;
  --primary: #5d8cff;
  --primary-2: #7a5cff;
  --cyan: #49d7ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --container: 1360px;
  --radius-xl: 34px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(93, 140, 255, 0.17), transparent 28%),
    radial-gradient(circle at 90% 12%, rgba(122, 92, 255, 0.16), transparent 32%),
    radial-gradient(circle at 72% 86%, rgba(73, 215, 255, 0.10), transparent 22%),
    linear-gradient(135deg, #05070d 0%, #0b1020 48%, #0c1126 100%);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button, a, input, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }

.site-bg::before,
.site-bg::after {
  content: "";
  position: fixed;
  z-index: -2;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(84px);
  pointer-events: none;
}
.site-bg::before { top: 80px; left: -140px; background: rgba(93, 140, 255, 0.18); }
.site-bg::after { top: 160px; right: -160px; background: rgba(122, 92, 255, 0.18); }

.container { width: min(calc(100% - 32px), var(--container)); margin: 0 auto; }
.header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(5, 7, 13, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.header__inner {
  min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo__icon {
  width: 48px; height: 42px; display: grid; place-items: center; border-radius: 14px;
  font-weight: 900; font-size: 14px; letter-spacing: 0.6px; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 12px 30px rgba(93, 140, 255, 0.32);
}
.logo__text { font-size: 18px; font-weight: 800; white-space: nowrap; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 12px 16px; border-radius: 14px; color: var(--muted); font-weight: 600; transition: 0.25s ease;
}
.nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.header__actions { display: flex; align-items: center; gap: 12px; }
.burger {
  display: none; width: 48px; height: 48px; border: 1px solid rgba(255,255,255,0.12); border-radius: 14px;
  background: rgba(255, 255, 255, 0.05); padding: 0; cursor: pointer;
}
.burger span { display: block; width: 20px; height: 2px; margin: 5px auto; background: #fff; border-radius: 2px; }

.section { position: relative; padding: 104px 0; }
.section + .section::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(1120px, calc(100% - 32px)); height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.16), transparent);
}
.section--hero { padding-top: 58px; padding-bottom: 92px; }
.eyebrow {
  display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 10px 16px;
  border-radius: 999px; color: #ebf2ff; font-size: 14px; font-weight: 700;
  border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.05);
}
.hero__grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: 48px; align-items: center;
}
.hero__content, .hero__visual, .contacts__content { min-width: 0; }
.hero__title {
  margin: 20px 0 18px; font-size: clamp(42px, 5.7vw, 72px); line-height: 0.98; letter-spacing: -2.2px; font-weight: 900;
}
.hero__title span {
  background: linear-gradient(135deg, #ffffff 0%, #8ed8ff 40%, #9f8bff 80%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero__text, .section-text, .service-card p, .process-step p, .marketing-card p, .faq-answer {
  color: var(--muted); line-height: 1.72;
}
.hero__text { max-width: 720px; font-size: 18px; }
.hero__text strong { color: var(--text); }
.hero__buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hero__content { padding-right: 6px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 58px; padding: 0 26px;
  border-radius: 18px; font-size: 16px; font-weight: 800; border: 1px solid transparent; transition: 0.25s ease;
}
.btn--primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: 0 16px 36px rgba(93, 140, 255, 0.35); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 44px rgba(93, 140, 255, 0.42); }
.hero__visual { position: relative; min-height: 0; display: flex; align-items: center; justify-content: stretch; width: 100%; }
.hero-card, .service-card, .process-step, .marketing-card, .contacts-item, .faq-box, .platform-item, .to-top {
  border: 1px solid rgba(255,255,255,0.12); background: rgba(12, 18, 34, 0.78); box-shadow: var(--shadow);
}
.hero-card { position: relative; width: 100%; padding: 14px; border-radius: 40px; overflow: hidden; }
.hero-card--banner { width: 100%; max-width: 100%; }
.hero-card--banner::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(10,16,32,0.12), rgba(10,16,32,0.34)),
    radial-gradient(circle at 14% 14%, rgba(93, 140, 255, 0.18), transparent 25%),
    radial-gradient(circle at 84% 12%, rgba(122, 92, 255, 0.18), transparent 28%),
    radial-gradient(circle at 64% 76%, rgba(73, 215, 255, 0.09), transparent 20%);
}
.hero-illustration {
  width: 100%; height: auto; object-fit: cover; border-radius: 32px; border: 1px solid rgba(255,255,255,0.08);
}
.section-head { max-width: 860px; margin: 0 auto 38px; text-align: center; }
.section-title {
  margin: 0 0 12px; font-size: clamp(34px, 4.2vw, 54px); line-height: 1.05; letter-spacing: -1.6px; font-weight: 900;
}
.section-divider {
  width: min(160px, 100%); height: 1px; margin: 0 auto 18px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
}
.section-text { max-width: 760px; margin: 0 auto; font-size: 18px; }
.services-grid, .process-grid, .contacts__grid, .marketing-grid, .platforms-grid { display: grid; gap: 18px; }
.services-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-card, .process-step, .marketing-card, .faq-box { padding: 24px; border-radius: 24px; min-width: 0; }
.service-card__icon, .marketing-card__icon, .platform-icon, .contacts-item__icon {
  width: 46px; height: 46px; flex: 0 0 46px; display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(135deg, rgba(93, 140, 255, 0.20), rgba(122, 92, 255, 0.20));
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.service-card__icon { font-size: 20px; }
.service-card h3, .process-step h3, .marketing-card h3, .faq-box h3 { margin: 18px 0 10px; font-size: 22px; line-height: 1.2; }
.marketing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 18px; }
.marketing-card__icon { font-size: 18px; }
.platforms-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.platform-item {
  display: flex; align-items: center; gap: 14px; padding: 18px; border-radius: 22px; transition: 0.25s ease;
}
.platform-item strong { line-height: 1.3; }
.platform-icon { border-radius: 14px; color: #fff; font-size: 18px; font-weight: 900; }
.platform-icon--ya { background: linear-gradient(135deg, #ff4a4a, #ffcf4a); }
.platform-icon--google { background: rgba(255, 255, 255, 0.08); }
.platform-icon--meta { background: linear-gradient(135deg, #4aa8ff, #6d63ff); }
.platform-icon--instagram { background: linear-gradient(135deg, #ff6a63, #bf4dff); }
.platform-icon--tiktok { background: linear-gradient(135deg, #1fe2ff, #ff4b85); }
.platform-icon--vk { background: linear-gradient(135deg, #3f8cff, #5ba8ff); }
.platform-icon--telegram { background: linear-gradient(135deg, #27a5e7, #66ccff); }
.process-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.process-step__num {
  display: inline-flex; align-items: center; justify-content: center; min-width: 58px; min-height: 38px; padding: 0 12px;
  border-radius: 999px; font-size: 14px; font-weight: 900; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
.contacts__grid { grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr); align-items: start; }
.contacts-list { display: grid; gap: 14px; }
.contacts-item {
  display: flex; align-items: center; gap: 14px; padding: 18px 20px; border-radius: 20px; transition: 0.25s ease;
}
.contacts-item strong { display: block; margin-bottom: 4px; }
.contacts-item__icon { border-radius: 16px; color: #fff; }
.contacts-item__icon--brand {
  padding: 0; overflow: hidden; background: transparent; border-color: rgba(255,255,255,0.18);
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
}
.contacts-item__icon--brand img {
  width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 2px; border-radius: 14px;
}
.contacts-item__icon svg, .platform-icon svg, .to-top svg { width: 22px; height: 22px; }
.contacts-item small { color: var(--muted); line-height: 1.55; }
.faq-box {
  min-height: 100%; background: linear-gradient(180deg, rgba(12, 18, 34, 0.92), rgba(12, 18, 34, 0.76));
}
.faq-list { display: grid; gap: 12px; margin-top: 10px; }
.faq-item {
  border: 1px solid rgba(255,255,255,0.12); border-radius: 18px; background: rgba(255,255,255,0.04); overflow: hidden;
}
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px;
  color: var(--text); background: transparent; border: 0; text-align: left; cursor: pointer; font-weight: 700;
}
.faq-question span { font-size: 22px; line-height: 1; color: var(--cyan); }
.faq-answer { display: none; padding: 0 20px 18px; font-size: 15px; }
.faq-item.is-open .faq-answer { display: block; }
.contacts-item:hover,
.platform-item:hover,
.service-card:hover,
.marketing-card:hover,
.process-step:hover {
  transform: translateY(-4px); border-color: rgba(93, 140, 255, 0.42); box-shadow: 0 24px 56px rgba(0, 0, 0, 0.28);
}
.footer { padding: 30px 0 42px; border-top: 1px solid rgba(255,255,255,0.08); }
.footer__inner { display: flex; align-items: center; justify-content: center; gap: 18px; color: var(--muted); text-align: center; }
.to-top {
  position: fixed; right: 20px; bottom: 20px; z-index: 90; width: 58px; height: 58px; display: inline-flex; align-items: center;
  justify-content: center; border-radius: 50%; color: #fff; cursor: pointer; opacity: 0; pointer-events: none; transition: 0.25s ease;
  background: linear-gradient(135deg, rgba(93, 140, 255, 0.95), rgba(122, 92, 255, 0.95));
}
.to-top.is-visible { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-4px); }
.reveal { opacity: 0; transform: translateY(24px); }
.reveal.is-visible { opacity: 1; transform: translateY(0); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal--delay.is-visible { transition-delay: 0.1s; }
.reveal--delay-1.is-visible { transition-delay: 0.08s; }
.reveal--delay-2.is-visible { transition-delay: 0.16s; }
.reveal--delay-3.is-visible { transition-delay: 0.24s; }

@media (max-width: 1180px) {
  .hero__grid { grid-template-columns: 1fr; gap: 24px; }
  .hero__visual { justify-content: flex-start; margin-top: 8px; }
  .hero-card { max-width: 1080px; }
  .services-grid, .platforms-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contacts__grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav {
    display: none; position: absolute; top: calc(100% + 10px); left: 16px; right: 16px; flex-direction: column;
    align-items: stretch; padding: 12px; border-radius: 20px; border: 1px solid rgba(255,255,255,0.12);
    background: rgba(8, 11, 20, 0.96); box-shadow: var(--shadow);
  }
  .nav a { width: 100%; }
  .burger { display: inline-block; }
  .section { padding: 86px 0; }
  .section--hero { padding-top: 34px; }
  .hero__visual { display: none; }
  .services-grid, .process-grid, .contacts__grid, .marketing-grid, .platforms-grid { grid-template-columns: 1fr; }
  .hero__title, .section-title { letter-spacing: -1.2px; }
  .contacts__grid { gap: 22px; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 24px), var(--container)); }
  .header__inner { min-height: 74px; }
  .hero__text, .section-text { font-size: 16px; }
  .btn { width: 100%; }
  .hero__buttons { flex-direction: column; }
  .service-card, .process-step, .marketing-card, .faq-box { padding: 20px; border-radius: 22px; }
  .platform-item, .contacts-item { padding: 16px; }
  .to-top { right: 14px; bottom: 14px; width: 52px; height: 52px; }
}