:root {
  color-scheme: light;
  --navy: #144573;
  --navy-deep: #102f4c;
  --orange: #f58220;
  --ink: #20384a;
  --muted: #70828d;
  --line: #e1e8eb;
  --paper: #fff;
  --canvas: #f4f7f8;
  --blue-sea: #dcebf0;
  --shadow: 0 4px 24px #102f4c14;
  --font: 'Avenir Next', Avenir, 'Segoe UI', sans-serif;
  --header-height: 86px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--canvas);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
  background: var(--canvas);
}

.topbar {
  position: relative;
  z-index: 1;
  display: flex;
  height: var(--header-height);
  align-items: center;
  padding-inline: clamp(20px, 3.3vw, 48px);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.topbar::after {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 76px;
  height: 3px;
  background: var(--orange);
  content: '';
}

.brand {
  display: block;
  width: min(190px, 50vw);
  height: auto;
}

.stage {
  position: relative;
  display: grid;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
  place-items: center;
  overflow: hidden;
  padding: clamp(28px, 6vw, 88px) clamp(20px, 5vw, 72px);
  background:
    radial-gradient(ellipse at 82% 22%, #dcebf080 0, #dcebf000 42%),
    var(--canvas);
}

.stage::before {
  position: absolute;
  inset: 0 0 0 auto;
  width: min(34vw, 420px);
  border-left: 1px solid #1445730d;
  background-color: #dcebf028;
  background-image:
    linear-gradient(to right, #1445730a 1px, transparent 1px),
    linear-gradient(to bottom, #1445730a 1px, transparent 1px);
  background-position: center;
  background-size: 44px 44px;
  content: '';
  pointer-events: none;
}

.notice {
  position: relative;
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  width: min(820px, 100%);
  min-height: 286px;
  align-items: stretch;
  padding: clamp(38px, 7vw, 82px);
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.notice__accent {
  display: block;
  align-self: stretch;
  background: linear-gradient(to bottom, var(--orange) 0 26%, var(--navy) 26% 100%);
}

.notice__copy {
  align-self: center;
  min-width: 0;
}

h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.notice p {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: #526c7e;
  font-size: clamp(1.05rem, 2.1vw, 1.3rem);
  line-height: 1.5;
}

@media (max-width: 37.5em) {
  :root {
    --header-height: 72px;
  }

  .brand {
    width: min(160px, 54vw);
  }

  .stage {
    min-height: calc(100vh - var(--header-height));
    min-height: calc(100dvh - var(--header-height));
    padding: 28px 20px;
  }

  .stage::before {
    width: 48vw;
    background-size: 34px 34px;
  }

  .notice {
    grid-template-columns: 3px minmax(0, 1fr);
    gap: 20px;
    min-height: 224px;
    padding: 32px 24px;
  }

  .notice p {
    padding-top: 14px;
  }
}