:root {
  --lh-color-primary: #111111;
  --lh-color-bg: #f7f5f2;
  --lh-color-card: #ffffff;
  --lh-color-text: #222222;
  --lh-color-text-secondary: #666666;
  --lh-color-text-weak: #999999;
  --lh-color-accent: #d8b4a0;
  --lh-color-border: rgba(17, 17, 17, 0.08);
  --lh-shadow: 0 26px 70px rgba(75, 60, 48, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--lh-color-text);
  background:
    radial-gradient(circle at 78% 6%, rgba(216, 180, 160, 0.28), transparent 28rem),
    linear-gradient(180deg, #fbfaf8 0%, var(--lh-color-bg) 45%, #ffffff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 20px clamp(22px, 5vw, 72px);
  background: rgba(247, 245, 242, 0.82);
  border-bottom: 1px solid var(--lh-color-border);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand img {
  width: 36px;
  height: 36px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  color: var(--lh-color-text-secondary);
  font-size: 14px;
}

.nav a:hover {
  color: var(--lh-color-primary);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
  align-items: center;
  gap: clamp(38px, 8vw, 96px);
  min-height: 78vh;
  padding: clamp(54px, 9vw, 112px) clamp(22px, 5vw, 72px) clamp(44px, 8vw, 88px);
}

.eyebrow,
.section-label {
  margin: 0 0 18px;
  color: var(--lh-color-text-secondary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 9em;
  margin-bottom: 22px;
  font-size: clamp(48px, 8vw, 96px);
  line-height: 1.04;
  letter-spacing: 0;
}

.subtitle {
  max-width: 720px;
  margin-bottom: 16px;
  font-size: clamp(22px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.24;
}

.summary,
.intro p,
.feature-card p,
.boundary-grid,
.contact-card dd,
.site-footer {
  color: var(--lh-color-text-secondary);
}

.summary {
  max-width: 620px;
  margin-bottom: 34px;
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
}

.button.primary {
  color: #ffffff;
  background: var(--lh-color-primary);
}

.button.secondary {
  border: 1px solid var(--lh-color-border);
  background: rgba(255, 255, 255, 0.72);
}

.hero-visual {
  position: relative;
  min-height: min(60vw, 620px);
}

.photo {
  position: absolute;
  overflow: hidden;
  border: 10px solid rgba(255, 255, 255, 0.72);
  border-radius: 28px;
  background-size: cover;
  box-shadow: var(--lh-shadow);
}

.photo::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(145deg, transparent 28%, rgba(17, 17, 17, 0.18));
}

.photo-large {
  inset: 0 7% 8% 8%;
  background:
    linear-gradient(135deg, rgba(17, 17, 17, 0.08), rgba(17, 17, 17, 0.02)),
    url("./hero-gallery-main.svg") center / cover no-repeat;
}

.photo-a {
  right: 0;
  bottom: 0;
  width: 34%;
  height: 36%;
  background:
    linear-gradient(145deg, rgba(216, 180, 160, 0.12), rgba(17, 17, 17, 0.04)),
    url("./hero-gallery-print.svg") center / cover no-repeat;
}

.photo-b {
  top: 9%;
  left: 0;
  width: 28%;
  height: 28%;
  background:
    linear-gradient(135deg, rgba(17, 17, 17, 0.1), rgba(255, 255, 255, 0.04)),
    url("./hero-gallery-detail.svg") center / cover no-repeat;
}

.section {
  display: grid;
  grid-template-columns: minmax(130px, 0.24fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 76px);
  padding: clamp(54px, 8vw, 96px) clamp(22px, 5vw, 72px);
  border-top: 1px solid var(--lh-color-border);
}

.section-content h2,
.boundary-panel h2,
.contact-card h2 {
  max-width: 880px;
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0;
}

.section-content p {
  max-width: 900px;
  font-size: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.contact-card,
.boundary-panel,
.audience-list div {
  border: 1px solid var(--lh-color-border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 18px 48px rgba(75, 60, 48, 0.06);
}

.feature-card {
  min-height: 188px;
  padding: 24px;
}

.feature-card span {
  color: var(--lh-color-accent);
  font-size: 13px;
  font-weight: 900;
}

.feature-card h3 {
  margin: 28px 0 10px;
  font-size: 22px;
}

.feature-card p {
  margin-bottom: 0;
}

.audience-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.audience-list div {
  min-height: 118px;
  padding: 28px;
  font-size: 20px;
  font-weight: 800;
}

.boundary-panel {
  padding: clamp(28px, 5vw, 54px);
  background:
    linear-gradient(135deg, rgba(17, 17, 17, 0.94), rgba(17, 17, 17, 0.82)),
    #111111;
  color: #ffffff;
}

.boundary-panel h2 {
  color: #ffffff;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.76);
}

.boundary-grid p {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
}

.contact-card {
  max-width: 980px;
  padding: clamp(28px, 5vw, 54px);
}

.contact-card dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 34px;
  margin: 0;
}

.contact-card dt {
  margin-bottom: 6px;
  color: var(--lh-color-text-weak);
  font-size: 13px;
}

.contact-card dd {
  margin: 0;
  font-weight: 700;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 34px clamp(22px, 5vw, 72px);
  border-top: 1px solid var(--lh-color-border);
  font-size: 14px;
}

.site-footer strong,
.site-footer span {
  display: block;
}

.filings {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 20px;
}

@media (max-width: 980px) {
  .hero,
  .section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 520px;
  }

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

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero-visual {
    min-height: 380px;
  }

  .feature-grid,
  .audience-list,
  .boundary-grid,
  .contact-card dl {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 150px;
  }

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

  .filings {
    justify-content: flex-start;
  }
}