:root {
  /* e-ink-friendly: neutral palette, minimal effects, works in grayscale */
  --bg: #fbfbfa;
  --panel: #ffffff;
  --fg: #111111;
  --muted: #5b5b5b;
  --line: #e5e5e2;
  --shadow: rgba(0,0,0,.06);

  --radius: 18px;
  --radius-lg: 26px;

  --maxw: 980px;
  --pad: 22px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.hero {
  padding: calc(var(--pad) + 6px) var(--pad) 14px;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
}

.hero__title {
  margin: 0;
  font-size: 44px;
  letter-spacing: -0.6px;
}

.hero__subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 20px;
}

.content {
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--pad) 18px;
}

.seg {
  margin-top: 18px;
  display: inline-flex;
  gap: 10px;
  padding: 8px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
}

.seg__btn {
  border: 0;
  background: transparent;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  color: var(--fg);
}

.seg__btn.is-active {
  background: #121212;
  color: #fff;
}

.grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 8px 22px var(--shadow);
}

.cover {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, rgba(0,0,0,.10), rgba(0,0,0,.03));
  position: relative;
}

.cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.9) contrast(1.05);
}

.pill {
  position: absolute;
  top: 14px;
  right: 14px;
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 800;
  font-size: 14px;
  border: 2px solid rgba(0,0,0,.08);
  background: rgba(255,255,255,.92);
}

.meta {
  padding: 14px 16px 16px;
  display: grid;
  gap: 4px;
}

.meta__title { font-weight: 800; }
.meta__sub { color: var(--muted); font-size: 14px; }

.hint { color: var(--muted); }
.muted { color: var(--muted); }

.nav {
  position: sticky;
  bottom: 0;
  border-top: 2px solid var(--line);
  background: rgba(251,251,250,.92);
  backdrop-filter: blur(6px);
  padding: 12px var(--pad);
}

.nav {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.nav__item {
  flex: 1;
  display: grid;
  place-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--muted);
  padding: 12px 10px;
  border-radius: 999px;
}

.nav__item.is-active {
  background: #121212;
  color: #fff;
}

.nav__icon {
  font-size: 18px;
  line-height: 1;
}

.nav__label {
  font-weight: 800;
  font-size: 14px;
}

@media (max-width: 720px) {
  .hero__title { font-size: 34px; }
  .hero__subtitle { font-size: 18px; }
  .grid { grid-template-columns: 1fr; }
}