:root {
  --bg: #fff8f1;
  --card: #fffefc;
  --text: #4b3d35;
  --sub: #7a665b;
  --accent: #e87a52;
  --accent-dark: #cf5f3a;
  --line: #f0dfcf;
  --shadow: 0 10px 24px rgba(136, 85, 51, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #fff8f1 0%, #fff2e5 100%);
  color: var(--text);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
}

img {
  display: block;
  width: 100%;
  max-width: 100%;
  border-radius: 16px;
}

.hero,
.section,
.footer {
  width: min(100% - 24px, 960px);
  margin-inline: auto;
}

.hero {
  margin-top: 12px;
  padding: 20px;
  border-radius: 24px;
  background: radial-gradient(circle at top right, #ffd8bf, #fff4ea 45%, #fffefb 100%);
  box-shadow: var(--shadow);
}

.hero__eyebrow {
  margin: 0;
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 0.9rem;
}

h1,
h2 {
  line-height: 1.3;
}

h1 {
  margin: 8px 0 12px;
  font-size: clamp(1.9rem, 6vw, 2.8rem);
}

.hero__lead {
  margin: 0 0 16px;
  color: var(--sub);
}

.hero__cta {
  display: grid;
  gap: 10px;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 12px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

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

.button--primary:hover,
.button--primary:focus-visible {
  background: var(--accent-dark);
}

.button--ghost {
  color: var(--accent-dark);
  border-color: var(--accent);
  background: #fffaf6;
}

.hero__image {
  margin-top: 16px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.section {
  margin-top: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
}

h2 {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 4.5vw, 1.9rem);
}

.section p {
  margin: 0;
  color: var(--sub);
}

.section__image {
  margin-top: 14px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.feature-list,
.howto-list {
  margin: 10px 0 0;
  padding-left: 1.2rem;
  color: var(--sub);
}

.feature-list li + li,
.howto-list li + li {
  margin-top: 6px;
}

.screenshot-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.screenshot-grid img {
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.section--download p,
.section--privacy p {
  margin-bottom: 12px;
}

.download-buttons {
  display: grid;
  gap: 10px;
}

.button--store {
  background: #3a2d27;
  color: #fff;
}

.button--store:hover,
.button--store:focus-visible {
  background: #261c18;
}

.privacy-link {
  color: var(--accent-dark);
  font-weight: 700;
}

.footer {
  margin-block: 20px 28px;
  padding: 16px 20px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line);
  text-align: center;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.footer a {
  color: var(--accent-dark);
  text-decoration: none;
  font-weight: 700;
}

.footer p {
  margin: 0;
  color: var(--sub);
  font-size: 0.9rem;
}

@media (min-width: 720px) {
  .hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 18px;
    align-items: center;
    margin-top: 18px;
  }

  .hero__image {
    margin-top: 0;
    height: 100%;
  }

  .hero__cta,
  .download-buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .screenshot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}