:root {
  --bg: #0b1d2a;
  --panel: rgba(14, 31, 42, 0.94);
  --line: rgba(157, 185, 206, 0.2);
  --text: #eef7ff;
  --muted: #b8cfe2;
  --shadow: rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Inter", sans-serif;
  background: linear-gradient(180deg, #081c2b 0%, #0d2a3f 100%);
  color: var(--text);
}

body {
  min-height: 100vh;
}

.page-shell {
  width: min(1280px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 22px 0 36px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #d0f0ff, #8ed6ff);
  color: #0a2338;
  font-weight: 800;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
}

.brand-link {
  color: var(--text);
  text-decoration: none;
  opacity: 0.9;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.station-panel {
  background: linear-gradient(180deg, rgba(14, 31, 42, 0.95), rgba(8, 23, 32, 0.98));
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 18px 48px var(--shadow);
  overflow: hidden;
}

.station-header {
  padding: 18px 18px 0;
}

.station-header h1 {
  margin: 0;
  font-size: clamp(1.3rem, 2vw, 2.3rem);
}

.station-frame-wrap {
  padding: 16px;
}

iframe {
  display: block;
  width: 100%;
  height: 82vh;
  min-height: 620px;
  border: 0;
  border-radius: 18px;
  background: #dfeaf1;
}

@media (max-width: 700px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-link {
    letter-spacing: 0.04em;
  }

  iframe {
    min-height: 440px;
    height: 72vh;
  }
}