:root {
  --bg: #0f1117;
  --panel: rgba(255,255,255,.07);
  --panel2: rgba(255,255,255,.11);
  --border: rgba(255,255,255,.14);
  --text: #ffffff;
  --muted: #b7bdc9;
  --green: #2eea7a;
  --blue: #4da3ff;
  --red: #ff4d4d;
  --shadow: 0 24px 70px rgba(0,0,0,.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 90% 0%, rgba(46,234,122,.12), transparent 60%),
    radial-gradient(800px 500px at 0% 100%, rgba(77,163,255,.13), transparent 55%),
    linear-gradient(160deg, #0f1117, #171a24 60%, #101219);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.header {
  padding: 26px 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 54px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

.nav-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,.04);
}

.hero {
  padding: 70px 0 50px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: 34px;
}

.badge {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(46,234,122,.35);
  color: #d9ffe8;
  background: rgba(46,234,122,.08);
  font-weight: 650;
  margin-bottom: 22px;
}

h1 {
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  margin: 0 0 22px;
  max-width: 900px;
  letter-spacing: -2px;
}

.hero p {
  color: var(--muted);
  max-width: 760px;
  margin: 0 0 34px;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 14px 20px;
  border-radius: 14px;
  font-weight: 800;
  border: 1px solid var(--border);
  transition: .2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), #00a846);
  color: #06120b;
  border-color: rgba(46,234,122,.6);
}

.btn-secondary {
  background: rgba(255,255,255,.07);
  color: #fff;
}

.mockup {
  position: relative;
  padding: 24px;
  min-height: 460px;
  border-radius: 32px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.mockup::before {
  content: "";
  position: absolute;
  inset: -90px -80px auto auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(46,234,122,.14);
}

.phone {
  position: relative;
  max-width: 330px;
  margin: 0 auto;
  padding: 18px;
  border-radius: 30px;
  background: #10131b;
  border: 1px solid rgba(255,255,255,.16);
}

.phone-top {
  width: 84px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,.22);
  margin: 0 auto 18px;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bubble {
  padding: 12px 14px;
  border-radius: 16px;
  color: #dce4f2;
  background: rgba(255,255,255,.075);
  border: 1px solid rgba(255,255,255,.08);
  font-size: 14px;
  line-height: 1.45;
}

.bubble.user {
  margin-left: 45px;
  background: linear-gradient(135deg, rgba(77,163,255,.22), rgba(77,163,255,.09));
}

.bubble.bot {
  margin-right: 35px;
  border-left: 4px solid var(--green);
}

.section {
  padding: 44px 0;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 22px;
}

.section-title h2 {
  font-size: clamp(28px, 4vw, 42px);
  margin: 0;
}

.section-title p {
  color: var(--muted);
  margin: 0;
  max-width: 560px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items: stretch;
}

.card {
  position: relative;
  min-height: 280px;
  padding: 26px;
  border-radius: 26px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.icon {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 30px;
  margin-bottom: 20px;
  background: rgba(255,255,255,.08);
  border: 1px solid var(--border);
}

.card h3 {
  font-size: 23px;
  margin: 0 0 12px;
}

.card p,
.card li {
  color: var(--muted);
  font-size: 16px;
}

.card ul {
  padding-left: 18px;
}

.tariffs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  align-items: stretch;
}

.tariff {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.tariff-name {
  font-size: 18px;
  font-weight: 850;
  margin-bottom: 12px;
}

.price {
  font-size: 28px;
  font-weight: 950;
  margin-bottom: 8px;
}

.tariff p {
  color: var(--muted);
  margin: 0 0 18px;
}

.tariff .btn {
  width: 100%;
  margin-top: auto;
}

.notice {
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(255,77,77,.25);
  background: rgba(255,77,77,.06);
  color: #ffd8d8;
}

.footer {
  padding: 36px 0;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

.footer a {
  color: #dce4f2;
}

@media (max-width: 1000px) {
  .hero-grid,
  .cards,
  .tariffs {
    grid-template-columns: 1fr;
  }

  .section-title {
    display: block;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .mockup {
    min-height: auto;
  }
}