:root {
  --bg: #f4f1ea;
  --surface: #fffdf9;
  --surface-2: #faf7f1;
  --surface-3: #eee8dc;
  --text: #191611;
  --text-2: #3d372d;
  --muted: #746b5d;
  --faint: #a3998a;
  --border: #e4dccd;
  --border-strong: #d3c6b1;
  --primary: #171512;
  --primary-text: #fffdf9;
  --beige: #e8cfa0;
  --beige-soft: #f6ead4;
  --sans: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Mono", "Consolas", "Microsoft YaHei UI", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 80% 0%, rgba(232, 207, 160, 0.35), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

.site-header {
  max-width: 1180px;
  height: 76px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 12px;
}

.site-header nav a:hover {
  color: var(--text);
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 72px;
}

.hero {
  min-height: 500px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: center;
  gap: 64px;
  padding: 46px 0 64px;
}

.eyebrow {
  display: inline-block;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.hero h1 {
  margin: 17px 0 20px;
  font-size: clamp(46px, 6vw, 78px);
  font-weight: 650;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero h1 em {
  font-style: normal;
  color: var(--muted);
}

.lead {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 12px;
  font-weight: 600;
  transition: background 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--primary-text);
}

.button.primary:hover {
  background: #2a251e;
}

.button.ghost {
  background: var(--surface);
  color: var(--text-2);
}

.button.ghost:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.meta {
  margin: 17px 0 0;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
}

.meta strong {
  color: var(--text-2);
  font-weight: 600;
}

.release-notes {
  max-width: 560px;
  margin: 12px 0 0;
  color: var(--faint);
  font-size: 10px;
  line-height: 1.65;
  white-space: pre-line;
}

.hero-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 24px 70px rgba(34, 27, 18, 0.1);
  transform: rotate(1.2deg);
}

.mock-topbar {
  height: 54px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  font-size: 11px;
  font-weight: 600;
}

.mock-topbar img {
  width: 27px;
  height: 27px;
  border-radius: 7px;
}

.mock-topbar i {
  width: 5px;
  height: 5px;
  margin-left: auto;
  border-radius: 50%;
  background: #3f7a52;
}

.mock-body {
  padding: 20px;
}

.mock-line {
  width: 58%;
  height: 8px;
  margin-bottom: 8px;
  border-radius: 99px;
  background: var(--surface-3);
}

.mock-line.wide {
  width: 78%;
  height: 13px;
  background: #d9cfbd;
}

.mock-progress {
  height: 7px;
  margin: 22px 0 14px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--surface-3);
}

.mock-progress span {
  display: block;
  width: 72%;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
}

.mock-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.mock-stats div {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}

.mock-stats small {
  display: block;
  color: var(--faint);
  font-size: 8px;
}

.mock-stats b {
  display: block;
  margin-top: 5px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
}

.mock-threads {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
  margin-top: 14px;
}

.mock-threads span {
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: linear-gradient(to top, #171512 0 74%, var(--surface-2) 74%);
}

.mock-threads span:nth-child(2n) {
  background: linear-gradient(to top, #171512 0 51%, var(--surface-2) 51%);
}

.mock-threads span:nth-child(3n) {
  background: linear-gradient(to top, #171512 0 88%, var(--surface-2) 88%);
}

.features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features article {
  padding: 28px 24px 30px 0;
  border-right: 1px solid var(--border);
}

.features article:not(:first-child) {
  padding-left: 24px;
}

.features article:last-child {
  border-right: 0;
}

.feature-index {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
}

.features h2 {
  margin: 28px 0 8px;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.features p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 68px;
  padding: 36px 40px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.download-panel h2 {
  margin: 10px 0 8px;
  font-size: 26px;
  letter-spacing: -0.035em;
}

.download-panel p {
  max-width: 600px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.download-actions {
  flex: 0 0 auto;
  margin-top: 0;
}

.notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 52px;
}

.notes h3 {
  margin: 0 0 7px;
  font-size: 12px;
  font-weight: 650;
}

.notes p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.7;
}

footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 28px 36px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
  color: var(--faint);
  font-size: 9px;
}

footer span:last-child {
  display: flex;
  gap: 18px;
}

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

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 38px;
    padding-top: 24px;
  }

  .hero-card {
    max-width: 520px;
    transform: none;
  }

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

  .features article:nth-child(2) {
    border-right: 0;
  }

  .features article:nth-child(n + 3) {
    border-top: 1px solid var(--border);
  }

  .download-panel {
    align-items: flex-start;
    flex-direction: column;
    padding: 28px;
  }

  .notes {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    height: 66px;
    padding: 0 18px;
  }

  .site-header nav a:first-child {
    display: none;
  }

  main {
    padding: 0 18px 52px;
  }

  .hero h1 {
    font-size: 43px;
  }

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

  .features article,
  .features article:not(:first-child) {
    padding: 22px 0;
    border-right: 0;
    border-top: 1px solid var(--border);
  }

  .features article:first-child {
    border-top: 0;
  }

  .features h2 {
    margin-top: 14px;
  }

  footer {
    flex-direction: column;
    padding: 22px 18px 32px;
  }
}