:root {
  color: #223047;
  background: #f8fbff;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(188, 222, 255, 0.42), rgba(255, 247, 230, 0.44)),
    #f8fbff;
}

a {
  color: inherit;
}

.hero {
  min-height: 540px;
  padding: 28px clamp(20px, 6vw, 72px);
}

nav,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

nav strong {
  font-size: 22px;
}

nav div,
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

nav a {
  color: #4d6078;
  text-decoration: none;
}

.hero-body {
  display: grid;
  align-items: center;
  max-width: 980px;
  min-height: 430px;
}

.eyebrow {
  color: #3f7fba;
  font-weight: 700;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(56px, 10vw, 110px);
  line-height: 0.92;
  letter-spacing: 0;
  margin: 0;
}

h2 {
  margin: 0 0 16px;
  font-size: 24px;
}

.tagline {
  max-width: 560px;
  color: #50657c;
  font-size: 24px;
  line-height: 1.5;
  margin: 22px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid #9ab8d8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  color: #27435e;
  font-weight: 700;
  padding: 0 18px;
  text-decoration: none;
}

.button.primary {
  background: #2f88da;
  border-color: #2f88da;
  color: white;
}

.release-card,
.section {
  border: 1px solid rgba(98, 132, 170, 0.28);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 48px rgba(69, 101, 139, 0.1);
}

.release-card {
  display: grid;
  grid-template-columns: minmax(120px, 160px) minmax(120px, 140px) minmax(260px, 1fr);
  gap: 14px;
  max-width: 860px;
  margin-top: 24px;
  padding: 16px;
}

.release-card span {
  display: block;
  color: #65788e;
  margin-bottom: 6px;
}

.release-card strong {
  display: block;
  word-break: break-word;
}

.mono {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
}

main {
  display: grid;
  gap: 18px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 42px) 42px;
}

.section {
  padding: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

ol,
ul {
  padding-left: 22px;
  margin: 0;
}

li {
  margin: 8px 0;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
}

.check-list li {
  border: 1px solid #d6e5f5;
  border-radius: 8px;
  background: #f8fcff;
  margin: 0;
  padding: 12px;
}

details {
  border-top: 1px solid #dbe8f6;
  padding: 14px 0;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p,
.policy p,
#changelog-content {
  color: #50657c;
  line-height: 1.8;
}

footer {
  color: #60758c;
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px clamp(20px, 5vw, 42px) 42px;
}

@media (max-width: 760px) {
  body {
    min-width: 0;
  }

  nav,
  footer,
  .grid-2,
  .release-card,
  .check-list {
    grid-template-columns: 1fr;
  }

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

  .tagline {
    font-size: 20px;
  }
}