:root {
  color-scheme: light;
  --ink: #171715;
  --muted: #6e6b64;
  --paper: #f4f0e8;
  --paper-deep: #e9e2d6;
  --accent: #f25c36;
  --line: rgba(23, 23, 21, 0.16);
  --shadow: rgba(50, 42, 31, 0.16);
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 12%, rgba(255, 255, 255, 0.8), transparent 34rem),
    linear-gradient(150deg, var(--paper) 0%, var(--paper-deep) 100%);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.page-shell {
  width: min(100%, 34rem);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right)) max(1.25rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left));
  display: grid;
  align-content: center;
  gap: 1rem;
}

.card {
  position: relative;
  min-height: min(44rem, calc(100svh - 5rem));
  padding: clamp(1.4rem, 5vw, 2.25rem);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(255, 253, 248, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.84);
  border-radius: 1.75rem;
  box-shadow: 0 1.5rem 4rem var(--shadow);
  backdrop-filter: blur(1rem);
}

.card::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: 3.5rem;
  width: 11rem;
  aspect-ratio: 1;
  border: 2.4rem solid rgba(242, 92, 54, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.brand-row,
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-style: italic;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.status > span {
  width: 0.45rem;
  aspect-ratio: 1;
  background: #28a66a;
  border-radius: 50%;
  box-shadow: 0 0 0 0.22rem rgba(40, 166, 106, 0.12);
}

.intro {
  margin: auto 0;
  padding: clamp(3rem, 12vh, 6.5rem) 0 3rem;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4.5rem, 22vw, 7.25rem);
  font-weight: 500;
  line-height: 0.83;
  letter-spacing: -0.075em;
}

.period {
  color: var(--accent);
}

.company {
  margin: 1.35rem 0 0;
  font-size: clamp(1.1rem, 5vw, 1.45rem);
  font-weight: 750;
  letter-spacing: -0.025em;
}

.message {
  max-width: 24rem;
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: clamp(0.95rem, 4vw, 1.05rem);
  line-height: 1.7;
  word-break: keep-all;
}

.actions {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.button {
  min-height: 3.5rem;
  padding: 0.9rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border: 1px solid var(--ink);
  border-radius: 0.9rem;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}

.button-primary {
  color: #fff;
  background: var(--ink);
}

.button-secondary {
  color: var(--ink);
  background: transparent;
}

.button:hover {
  transform: translateY(-2px);
}

.button-secondary:hover {
  color: #fff;
  background: var(--ink);
}

.button:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgba(242, 92, 54, 0.45);
  outline-offset: 3px;
}

.button[data-share-state="done"] {
  color: #fff;
  background: #267552;
  border-color: #267552;
}

.card-footer {
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.11em;
}

.footer-line {
  height: 1px;
  flex: 1;
  background: var(--line);
}

.test-note,
.noscript-message {
  margin: 0;
  color: rgba(23, 23, 21, 0.52);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-align: center;
}

.noscript-message {
  padding: 0.75rem;
}

@media (max-width: 380px) {
  .page-shell {
    padding: 0.75rem;
  }

  .card {
    min-height: calc(100svh - 3.25rem);
    padding: 1.2rem;
    border-radius: 1.4rem;
  }

  .actions {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #47443e;
    --line: rgba(23, 23, 21, 0.35);
  }

  .card {
    border-color: var(--ink);
  }
}