:root {
  color-scheme: light;
  --paper: #f8f3ea;
  --paper-warm: #f6efe4;
  --surface: #fffdf8;
  --ink: #2d2a26;
  --muted: #756e66;
  --line: #e6ddd0;
  --red: #b65a3c;
  --clay: #d9a28b;
  --green: #8d9a82;
  --blue: #5d7f8b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: rgb(248 243 234 / 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgb(230 221 208 / 0.72);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  min-height: 92vh;
  position: relative;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 96px 32px 72px;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgb(248 243 234 / 0.92) 0%, rgb(248 243 234 / 0.78) 42%, rgb(248 243 234 / 0.20) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding-left: clamp(0px, 6vw, 90px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--red);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  font-family: ui-serif, "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(72px, 12vw, 164px);
  font-weight: 650;
}

.lead {
  max-width: 620px;
  margin: 18px 0 0;
  font-size: clamp(24px, 4vw, 48px);
  line-height: 1.22;
  font-family: ui-serif, "Songti SC", "STSong", serif;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.primary,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 16px;
  font-weight: 700;
}

.primary {
  background: var(--red);
  color: white;
}

.secondary {
  border: 1px solid var(--line);
  background: rgb(255 253 248 / 0.72);
  color: var(--ink);
}

.band {
  max-width: 1120px;
  margin: 0 auto;
  padding: 84px 32px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: center;
}

h2 {
  font-size: clamp(34px, 5vw, 62px);
  font-family: ui-serif, "Songti SC", "STSong", serif;
}

.band p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.78;
}

.quote-card,
.features article,
.scene-grid article,
.cta {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 18px 54px rgb(45 42 38 / 0.06);
}

.quote-card {
  border-radius: 24px;
  padding: 28px;
}

.quote-card span {
  color: var(--red);
  font-weight: 700;
  font-size: 13px;
}

.quote-card strong {
  display: block;
  margin-top: 16px;
  font-size: 28px;
}

.section-head {
  max-width: 740px;
  margin-bottom: 28px;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.scene-grid article {
  border-radius: 18px;
  min-height: 92px;
  display: flex;
  align-items: center;
  padding: 18px;
  font-weight: 700;
}

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

.features article {
  border-radius: 22px;
  padding: 24px;
}

.features h3 {
  font-size: 24px;
}

.privacy {
  max-width: none;
  background: #eef0e7;
}

.privacy > div {
  max-width: 960px;
  margin: 0 auto;
}

.cta {
  display: flex;
  gap: 28px;
  align-items: center;
  border-radius: 28px;
  margin-bottom: 60px;
}

.cta img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
}

footer {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  padding: 38px 24px 52px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 820px) {
  .site-header {
    padding: 0 18px;
  }

  nav {
    display: none;
  }

  .hero {
    min-height: 88vh;
    padding: 92px 22px 58px;
  }

  .hero::after {
    background: linear-gradient(180deg, rgb(248 243 234 / 0.94) 0%, rgb(248 243 234 / 0.78) 66%, rgb(248 243 234 / 0.48) 100%);
  }

  .intro,
  .features {
    grid-template-columns: 1fr;
  }

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

  .band {
    padding: 58px 20px;
  }

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