:root {
  --bg: #ecf1f5;
  --surface: #eff4f8;
  --surface-soft: #f6f9fc;
  --text-main: #21303f;
  --text-muted: #526275;
  --shadow-dark: #d6dfe8;
  --shadow-light: #ffffff;
  --radius-lg: 30px;
  --radius-xl: 38px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Avenir Next", "Segoe UI Variable", "Noto Sans", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(120% 70% at 20% -10%, #ffffff 0%, transparent 65%),
    radial-gradient(90% 60% at 100% 100%, #e4ebf2 0%, transparent 75%),
    var(--bg);
}

.page-shell {
  min-height: 100vh;
  padding-block: clamp(0.9rem, 4vw, 2rem);
  display: grid;
  grid-template-rows: auto 1fr;
  gap: clamp(1rem, 5vw, 3rem);
}

.container {
  width: min(100% - 1.8rem, 72rem);
  margin-inline: auto;
}

.topbar {
  border-radius: var(--radius-lg);
}

.topbar-inner {
  min-height: clamp(3.6rem, 10vw, 5rem);
  padding: clamp(0.7rem, 2vw, 1rem) clamp(0.9rem, 2.4vw, 1.4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1.2rem;
  flex-wrap: wrap;
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  box-shadow:
    -7px -7px 16px var(--shadow-light),
    9px 9px 20px var(--shadow-dark);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
}

.brand-logo {
  width: clamp(2.8rem, 11vw, 3.6rem);
  height: auto;
  display: block;
  flex: 0 0 auto;
}

.brand-name {
  font-size: clamp(0.95rem, 2.8vw, 1.2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  white-space: nowrap;
}

.brand-phone {
  color: var(--text-main);
  text-decoration: none;
  font-size: clamp(0.92rem, 2.5vw, 1.05rem);
  font-weight: 600;
  white-space: nowrap;
}

.brand-phone:focus-visible,
.brand-phone:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.hero {
  display: grid;
  align-content: center;
}

.hero-card {
  width: 100%;
  text-align: center;
  padding: clamp(1.6rem, 8vw, 4rem) clamp(1.2rem, 6vw, 3rem);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, #f5f8fb, var(--surface));
  box-shadow:
    -12px -12px 26px var(--shadow-light),
    14px 14px 30px var(--shadow-dark);
}

h1 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-size: clamp(1.7rem, 7vw, 3.5rem);
  text-wrap: balance;
}

.hero-card p {
  margin: clamp(0.85rem, 4vw, 1.4rem) auto 0;
  max-width: 38ch;
  color: var(--text-muted);
  font-size: clamp(0.98rem, 3.8vw, 1.25rem);
  line-height: 1.55;
}

@media (max-width: 36rem) {
  .topbar-inner {
    align-items: flex-start;
  }

  .brand-phone {
    margin-left: auto;
  }
}