:root {
  --bg: #f6f1e8;
  --bg-soft: #fbf7f1;
  --card: rgba(255, 252, 247, 0.82);
  --card-strong: #fffaf2;
  --text: #2e241d;
  --muted: #77685c;
  --line: rgba(86, 60, 35, 0.12);
  --accent: #8f5d3b;
  --accent-strong: #714125;
  --shadow: 0 24px 60px rgba(67, 45, 28, 0.14);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --page-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 225, 188, 0.72), transparent 28%),
    radial-gradient(circle at top right, rgba(218, 238, 216, 0.8), transparent 26%),
    linear-gradient(180deg, #f7f2ea 0%, #f5efe5 40%, #f7f3ee 100%);
}

img {
  display: block;
  width: 100%;
}

a {
  color: inherit;
}

.page-shell {
  min-height: 100vh;
}

.hero,
.section,
.footer {
  width: min(calc(100% - 32px), var(--page-width));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 18px;
}

.brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.topbar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.topbar__links a {
  color: var(--muted);
  text-decoration: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 42px;
  align-items: center;
  padding: 28px 0 36px;
}

.eyebrow,
.section__eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 4.9rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero__lead,
.section__head p,
.feature-card p,
.miniapp-panel p,
.link-card p,
.footer p,
.photo-grid figcaption {
  color: var(--muted);
  line-height: 1.75;
}

.hero__lead {
  margin: 22px 0 0;
  max-width: 42rem;
  font-size: 1.04rem;
}

.hero__actions,
.miniapp-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  color: #fff8f2;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  box-shadow: 0 16px 36px rgba(113, 65, 37, 0.22);
}

.button--secondary,
.button--ghost {
  color: var(--text);
  background: rgba(255, 250, 242, 0.72);
  border: 1px solid var(--line);
}

.button--ghost {
  cursor: default;
}

.hero__meta {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.hero__meta li::before,
.miniapp-points li::before {
  content: "•";
  color: var(--accent);
  margin-right: 10px;
}

.hero__visual {
  display: grid;
  grid-template-columns: 1.1fr 0.84fr;
  gap: 18px;
  align-items: end;
}

.hero-card,
.feature-card,
.miniapp-panel,
.link-card,
.photo-grid__item {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-card {
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.hero-card--photo {
  transform: translateY(18px);
}

.hero-card--photo img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.hero-card--device {
  padding: 12px;
  border-radius: 28px;
}

.hero-card--device img {
  border-radius: 22px;
}

.section {
  padding: 52px 0;
}

.section__head {
  max-width: 760px;
  margin-bottom: 26px;
}

.section__head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 3.3vw, 3rem);
  line-height: 1.12;
}

.photo-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.photo-grid__item {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.photo-grid__item img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.photo-grid__item--large img {
  aspect-ratio: 4 / 3;
}

.photo-grid__item--soft img {
  object-fit: cover;
  background: var(--bg-soft);
}

.photo-grid figcaption {
  padding: 18px 18px 20px;
  font-size: 0.94rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.feature-card h3,
.link-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.miniapp-panel {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 360px);
  gap: 26px;
  align-items: center;
  padding: 28px;
  border-radius: 32px;
}

.miniapp-points {
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.miniapp-points li {
  margin-top: 10px;
  color: var(--muted);
}

.miniapp-note {
  margin-top: 16px;
  font-size: 0.92rem;
}

.miniapp-panel__preview {
  margin: 0;
  padding: 14px;
  background: linear-gradient(180deg, rgba(255, 251, 244, 0.96), rgba(248, 241, 232, 0.9));
  border-radius: 28px;
}

.miniapp-panel__preview img {
  border-radius: 22px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.link-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.link-card a {
  color: var(--accent-strong);
  font-weight: 600;
  text-decoration: none;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0 42px;
  border-top: 1px solid var(--line);
}

@media (max-width: 960px) {
  .hero__content,
  .miniapp-panel,
  .photo-grid,
  .feature-list,
  .link-grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    grid-template-columns: 1fr 0.8fr;
  }

  .hero-card--photo {
    transform: none;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .hero,
  .section,
  .footer {
    width: min(calc(100% - 24px), var(--page-width));
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__content {
    gap: 28px;
    padding-top: 14px;
  }

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

  .miniapp-panel {
    padding: 18px;
  }
}