:root {
  --paper: #f4eee4;
  --card: #fbf7f0;
  --ink: #2b2620;
  --muted: #7a7065;
  --accent: #7a5a3a;
  --teal: #4f7f78;
  --line: #e2d8c9;
  --shadow: 0 18px 40px rgba(60, 45, 25, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #12141b;
    --card: #1b1e27;
    --ink: #ece6dc;
    --muted: #9a9286;
    --accent: #d6b58c;
    --teal: #7fc0b6;
    --line: #2a2e3a;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

a { color: var(--accent); }

.top {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 19px;
}

.brand img { border-radius: 8px; }

nav { display: flex; align-items: center; gap: 18px; }

nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--ink); }

.lang {
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 14px;
  cursor: pointer;
}

main { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.hero { text-align: center; padding: 48px 0 24px; }

.hero-icon { border-radius: 26px; box-shadow: var(--shadow); }

h1 {
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.2;
  margin: 28px auto 16px;
  max-width: 14em;
  letter-spacing: -0.01em;
}

.lead { color: var(--muted); max-width: 40em; margin: 0 auto; font-size: 18px; }

.cta { margin-top: 28px; }

.badge {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--accent);
  font-weight: 600;
}

.shots {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 28px;
  padding: 40px 0 56px;
}

.shots figure { margin: 0; text-align: center; flex: 0 1 260px; }

.shots img {
  width: 100%;
  height: auto;
  border-radius: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  display: block;
}

.shots .main { flex-basis: 300px; }

figcaption { color: var(--muted); font-size: 14px; margin-top: 12px; }

h2 { font-size: 30px; text-align: center; margin: 0 0 28px; }

.features { padding: 24px 0 40px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
}

.grid h3 { margin: 0 0 6px; font-size: 18px; color: var(--teal); }
.grid p { margin: 0; color: var(--muted); font-size: 15px; }

.privacy {
  max-width: 44em;
  margin: 0 auto;
  padding: 36px 0 48px;
  text-align: center;
}

.privacy p { color: var(--muted); }

footer {
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 28px 20px 40px;
  font-size: 15px;
}

footer p { margin: 4px 0; }
.muted { color: var(--muted); }

@media (max-width: 720px) {
  .shots { gap: 12px; padding: 28px 0 40px; }
  .shots figure:not(.main) { display: none; }
  .shots .main { flex-basis: 240px; }
  nav { gap: 12px; }
  nav a { display: none; }
  .hero { padding-top: 24px; }
  .lead { font-size: 16px; }
}