:root {
  color-scheme: light;
  --ink: #193126;
  --green: #315f49;
  --sage: #8aa294;
  --paper: #f2f0e8;
  --line: rgba(25, 49, 38, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.company-card {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  padding: 52px clamp(28px, 6vw, 88px) 38px;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
}

.company-card::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 18px;
  border: 1px solid var(--line);
  pointer-events: none;
}

.atmosphere {
  position: absolute;
  z-index: -3;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.atmosphere-one {
  width: min(68vw, 920px);
  aspect-ratio: 1;
  top: -48%;
  right: -14%;
  background: radial-gradient(circle, rgba(107, 139, 119, 0.2), rgba(107, 139, 119, 0) 68%);
}

.atmosphere-two {
  width: min(52vw, 700px);
  aspect-ratio: 1;
  left: -20%;
  bottom: -52%;
  background: radial-gradient(circle, rgba(180, 158, 112, 0.16), rgba(180, 158, 112, 0) 68%);
}

.identity {
  align-self: center;
  justify-self: center;
  width: min(860px, 100%);
  text-align: center;
  animation: enter 1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.mark {
  position: relative;
  width: 76px;
  height: 76px;
  margin: 0 auto 44px;
  border: 1px solid var(--green);
  border-radius: 50% 50% 5% 50%;
  transform: rotate(45deg);
}

.mark-sun {
  position: absolute;
  width: 12px;
  height: 12px;
  top: 19px;
  right: 19px;
  border-radius: 50%;
  background: var(--green);
}

.mark-horizon {
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 25px;
  height: 1px;
  background: var(--green);
  transform: rotate(-45deg);
}

h1 {
  margin: 0;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(32px, 4.8vw, 68px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.14em;
  text-indent: 0.14em;
}

.divider {
  width: min(380px, 58vw);
  height: 1px;
  margin: clamp(36px, 5vh, 58px) auto;
  background: linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.divider span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 8px var(--paper);
}

.slogan {
  margin: 0;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 400;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
}

footer {
  width: 100%;
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  color: rgba(25, 49, 38, 0.48);
  font-size: 10px;
  letter-spacing: 0.14em;
}

footer a {
  color: inherit;
  text-decoration: none;
  transition: color 160ms ease;
}

footer a:hover {
  color: var(--green);
}

@keyframes enter {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 600px) {
  .company-card {
    padding: 38px 34px 30px;
  }

  .company-card::before {
    inset: 12px;
  }

  .mark {
    width: 64px;
    height: 64px;
    margin-bottom: 38px;
  }

  .mark-sun {
    top: 16px;
    right: 16px;
    width: 10px;
    height: 10px;
  }

  .mark-horizon {
    left: 13px;
    right: 13px;
    bottom: 21px;
  }

  h1 {
    font-size: clamp(28px, 8vw, 34px);
    line-height: 1.55;
    letter-spacing: 0.08em;
    text-indent: 0.08em;
  }

  .divider {
    margin: 36px auto;
  }

  .slogan {
    font-size: clamp(25px, 7vw, 30px);
    letter-spacing: 0.13em;
    text-indent: 0.13em;
  }

  footer {
    padding-top: 22px;
    justify-content: center;
  }

}

@media (prefers-reduced-motion: reduce) {
  .identity {
    animation: none;
  }
}