:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5f6b82;
  --surface: #ffffff;
  --surface-muted: #f5f7fc;
  --line: #dfe5f0;
  --brand: #1a237e;
  --brand-light: #3949ab;
  --accent: #006600;
  --accent-hover: #008800;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  min-height: 72px;
  padding: 0 28px;
}

.site-header-brand {
  align-items: center;
  display: flex;
  gap: 14px;
}

.home-link {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: 9px;
  display: block;
  height: 32px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
  width: 32px;
}

.home-link img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.home-link:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.site-brand {
  align-items: center;
  display: inline-flex;
  font-size: 1.12rem;
  font-weight: 700;
  gap: 10px;
  text-decoration: none;
}

.site-brand img {
  height: 34px;
  width: 34px;
}

.site-nav {
  display: flex;
  gap: 22px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

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

.hero {
  background: linear-gradient(135deg, #172172 0%, #283593 52%, #4457bc 100%);
  color: #fff;
  padding: 86px 28px 92px;
  text-align: center;
}

.hero-logo {
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.26));
  height: 108px;
  margin-bottom: 8px;
  width: 108px;
}

.eyebrow,
.section-kicker {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0 0 10px;
}

.eyebrow { opacity: 0.72; }

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.45rem);
  line-height: 1.15;
  margin: 0 0 18px;
}

.hero > p:not(.eyebrow) {
  font-size: 1.1rem;
  margin: 0 auto 32px;
  max-width: 670px;
  opacity: 0.91;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.hero-btn {
  background: var(--accent);
  border-radius: 6px;
  color: #fff;
  display: inline-block;
  font-weight: 700;
  padding: 12px 28px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.hero-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.hero-link {
  color: #fff;
  font-weight: 600;
  text-underline-offset: 4px;
}

.section {
  margin: 0 auto;
  max-width: 1180px;
  padding: 82px 28px;
}

.section-heading {
  margin-bottom: 34px;
  max-width: 680px;
}

.section-kicker { color: var(--accent); }

.section-heading h2,
.workflow h2,
.learn-callout h2 {
  color: var(--brand);
  font-size: clamp(1.8rem, 3vw, 2.45rem);
  line-height: 1.25;
  margin: 0 0 12px;
}

.section-heading > p:last-child,
.workflow p,
.learn-callout p { color: var(--muted); }

.features {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  min-height: 184px;
  padding: 25px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: 0 10px 28px rgba(23, 32, 51, 0.09);
  transform: translateY(-3px);
}

.feature-card h3 {
  color: var(--brand);
  font-size: 1.1rem;
  margin: 0 0 10px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

.feature-card-link {
  background: var(--surface-muted);
  text-decoration: none;
}

.feature-card-link span {
  color: var(--accent);
  display: inline-block;
  font-weight: 700;
  margin-top: 18px;
}

.release-entry {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 24px;
  padding: 26px 30px;
}

.release-entry:last-child { margin-bottom: 0; }

.release-entry h3 {
  color: var(--brand);
  font-size: 1.2rem;
  margin: 0 0 10px;
}

.release-list {
  counter-reset: release;
  list-style: none;
  margin: 0;
  padding: 0;
}

.release-list li {
  border-top: 1px solid var(--line);
  counter-increment: release;
  display: grid;
  gap: 3px;
  padding: 13px 0 13px 36px;
  position: relative;
}

.release-list li:first-child { border-top: 0; }

.release-list li::before {
  color: var(--accent);
  content: counter(release) ".";
  font-weight: 700;
  left: 8px;
  position: absolute;
}

.release-list strong { color: var(--brand); }
.release-list span { color: var(--muted); font-size: 0.95rem; }

.workflow {
  background: var(--surface-muted);
  display: grid;
  gap: 52px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  padding: 78px max(28px, calc((100% - 1124px) / 2));
}

.workflow p { margin-bottom: 0; }

.workflow ol {
  counter-reset: steps;
  list-style: none;
  margin: 0;
  padding: 0;
}

.workflow li {
  border-left: 2px solid #cbd3e6;
  counter-increment: steps;
  display: grid;
  gap: 4px;
  margin-left: 14px;
  padding: 0 0 27px 31px;
  position: relative;
}

.workflow li:last-child { padding-bottom: 0; }

.workflow li::before {
  background: var(--brand);
  border-radius: 50%;
  color: #fff;
  content: counter(steps);
  font-size: 0.78rem;
  font-weight: 700;
  height: 28px;
  left: -15px;
  line-height: 28px;
  position: absolute;
  text-align: center;
  width: 28px;
}

.workflow strong { color: var(--brand); }
.workflow span { color: var(--muted); font-size: 0.94rem; }

.learn-callout {
  align-items: center;
  display: flex;
  gap: 40px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1100px;
  padding: 76px 28px;
}

.learn-callout > div { max-width: 650px; }

.site-footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 0.88rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  padding: 28px;
}

.site-footer p { margin: 0; }
.site-footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 800px) {
  .site-header { min-height: 64px; padding: 0 20px; }
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 0.88rem; }
  .hero { padding: 64px 22px 70px; }
  .hero-logo { height: 84px; width: 84px; }
  .features { grid-template-columns: 1fr; }
  .workflow { gap: 36px; grid-template-columns: 1fr; padding: 60px 28px; }
  .learn-callout { align-items: flex-start; flex-direction: column; gap: 22px; padding: 60px 28px; }
}

@media (max-width: 440px) {
  .site-brand { font-size: 1rem; }
  .site-brand img { height: 28px; width: 28px; }
  .site-nav { gap: 10px; }
  .site-nav a { font-size: 0.8rem; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 8px; }
}