:root {
  color-scheme: light;
  --ink: #111713;
  --muted: #56635d;
  --soft: #f4f7f4;
  --paper: #ffffff;
  --line: rgba(17, 23, 19, 0.14);
  --green: #123f34;
  --green-strong: #0b2d25;
  --gold: #c69b50;
  --hero-text: #f9fbf8;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    "PingFang SC",
    "Noto Sans CJK SC",
    "Microsoft YaHei",
    ui-sans-serif,
    system-ui,
    sans-serif;
  line-height: 1.65;
}

body::selection {
  background: rgba(198, 155, 80, 0.28);
}

a {
  color: inherit;
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  width: min(1180px, calc(100% - 40px));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  color: var(--hero-text);
}

.brand,
.site-header nav {
  display: inline-flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-size: 0.98rem;
  font-weight: 760;
  letter-spacing: 0;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.44);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
  font-weight: 850;
}

.site-header nav {
  gap: 26px;
}

.site-header nav a {
  font-size: 0.92rem;
  font-weight: 720;
  text-decoration: none;
  opacity: 0.82;
  transition: opacity 180ms ease, transform 180ms ease;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  opacity: 1;
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 86vh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: 148px max(24px, calc((100vw - 1180px) / 2)) 78px;
  isolation: isolate;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-image {
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  animation: imageSettle 1200ms ease-out both;
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(3, 17, 13, 0.9) 0%, rgba(3, 17, 13, 0.66) 44%, rgba(3, 17, 13, 0.14) 100%),
    linear-gradient(0deg, rgba(3, 17, 13, 0.72) 0%, transparent 46%);
}

.hero-content {
  width: min(720px, 100%);
  color: var(--hero-text);
  animation: riseIn 700ms ease-out both;
}

.brand-line,
.section-label {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

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

h1,
h2 {
  font-family:
    "Songti SC",
    "Noto Serif CJK SC",
    "STSong",
    ui-serif,
    Georgia,
    serif;
  letter-spacing: 0;
}

h1 {
  max-width: 7em;
  margin-bottom: 28px;
  font-size: clamp(3.6rem, 8vw, 6.4rem);
  line-height: 0.98;
  font-weight: 900;
  text-shadow: 0 3px 28px rgba(0, 0, 0, 0.32);
}

.lead {
  max-width: 670px;
  margin-bottom: 34px;
  color: rgba(249, 251, 248, 0.88);
  font-size: clamp(1.06rem, 1.7vw, 1.35rem);
  line-height: 1.85;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.26);
}

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

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--hero-text);
  color: var(--green-strong);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: var(--hero-text);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.08);
}

main {
  background: var(--paper);
}

.signal-band {
  width: min(1180px, calc(100% - 40px));
  margin: -44px auto 0;
  position: relative;
  z-index: 2;
  border-radius: 0;
  background: var(--green-strong);
  color: white;
  box-shadow: 0 24px 80px rgba(15, 45, 37, 0.18);
}

.signal-band dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
}

.signal-band div {
  padding: 28px 34px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.signal-band div:last-child {
  border-right: 0;
}

.signal-band dt {
  color: var(--gold);
  font-family:
    "Songti SC",
    "Noto Serif CJK SC",
    ui-serif,
    serif;
  font-size: clamp(2.2rem, 4vw, 4rem);
  font-weight: 900;
  line-height: 1;
}

.signal-band dd {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.95rem;
  font-weight: 720;
}

.intro-section,
.contact-section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.intro-section {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
  gap: 64px 86px;
  padding: 116px 0 108px;
}

.section-heading {
  align-self: start;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2.5rem, 5.4vw, 5.7rem);
  font-weight: 900;
  line-height: 1.02;
}

.intro-copy {
  color: #2a322e;
  font-size: clamp(1.05rem, 1.55vw, 1.24rem);
  line-height: 1.9;
}

.intro-copy p:last-child {
  margin-bottom: 0;
}

.archive-image {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 0;
}

.archive-image img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 22px 70px rgba(18, 63, 52, 0.16);
}

.archive-image figcaption {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  gap: 56px;
  align-items: end;
  border-top: 1px solid var(--line);
  padding: 92px 0 106px;
}

address {
  font-style: normal;
}

address a {
  display: inline-block;
  color: var(--green-strong);
  font-size: clamp(1.8rem, 4.1vw, 4.1rem);
  font-weight: 900;
  line-height: 1.06;
  text-decoration-thickness: 0.07em;
  text-underline-offset: 0.16em;
  overflow-wrap: anywhere;
}

footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 30px 0 42px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

footer a {
  color: var(--green-strong);
  font-weight: 800;
  text-decoration: none;
}

a:focus-visible {
  outline: 3px solid rgba(198, 155, 80, 0.62);
  outline-offset: 4px;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes imageSettle {
  from {
    transform: scale(1.04);
  }
  to {
    transform: scale(1);
  }
}

@media (max-width: 880px) {
  .site-header {
    width: min(100% - 28px, 680px);
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .site-header nav {
    gap: 18px;
  }

  .hero {
    min-height: 88vh;
    padding: 168px 14px 72px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(3, 17, 13, 0.9) 0%, rgba(3, 17, 13, 0.72) 58%, rgba(3, 17, 13, 0.34) 100%),
      linear-gradient(0deg, rgba(3, 17, 13, 0.78) 0%, transparent 50%);
  }

  h1 {
    max-width: 8ch;
    font-size: clamp(3.5rem, 16.5vw, 5.4rem);
  }

  .lead {
    font-size: 1.04rem;
    line-height: 1.78;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-band,
  .intro-section,
  .contact-section,
  footer {
    width: min(100% - 28px, 680px);
  }

  .signal-band {
    margin-top: -30px;
  }

  .signal-band dl,
  .intro-section,
  .archive-image,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .signal-band div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 18px;
    padding: 22px 20px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .signal-band div:last-child {
    border-bottom: 0;
  }

  .signal-band dd {
    margin-top: 0;
    text-align: right;
  }

  .intro-section {
    gap: 26px;
    padding: 78px 0 76px;
  }

  .archive-image {
    gap: 16px;
  }

  .archive-image img {
    aspect-ratio: 4 / 3;
  }

  .contact-section {
    gap: 30px;
    padding: 70px 0 78px;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}