:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #5e6b78;
  --line: #dfe5ea;
  --surface: #ffffff;
  --canvas: #f4f7f8;
  --orange: #f07832;
  --orange-soft: #fff0e6;
  --blue: #2d6cdf;
  --blue-soft: #eaf1ff;
  --green: #2f8f64;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  width: min(1120px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand img {
  width: 30px;
  height: 30px;
}

nav {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: 72px;
  padding: 68px 0 84px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 700px;
  margin-bottom: 24px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.2;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.status-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  color: #365044;
  font-size: 15px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
}

.app-preview {
  width: min(100%, 390px);
  justify-self: end;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 22px 55px rgba(26, 48, 68, 0.13);
}

.preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  font-weight: 700;
}

.preview-badge {
  padding: 3px 8px;
  border-radius: 6px;
  color: #8a4a16;
  background: var(--orange-soft);
  font-size: 12px;
}

.preview-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.preview-card span {
  color: var(--muted);
  font-size: 13px;
}

.preview-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.preview-footer img {
  width: 22px;
  height: 22px;
}

.section {
  padding: 78px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 640px;
  margin-bottom: 34px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.feature-grid p,
.status-section p {
  color: var(--muted);
}

.status-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.75fr);
  gap: 60px;
}

dl {
  margin: 0;
  border-top: 1px solid var(--line);
}

dl div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  font-weight: 700;
}

footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 26px 0 42px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer a {
  margin: 0 8px;
  color: inherit;
  text-decoration: underline;
}

.icp-record {
  display: block;
  width: 100%;
}

.legal-page {
  max-width: 920px;
  margin: 48px auto;
}

.legal-page h1 {
  margin: 12px 0 24px;
  color: #1f2937;
  font-size: 40px;
}

.legal-page h2 {
  margin: 30px 0 12px;
  color: #253047;
  font-size: 23px;
}

.legal-page p {
  margin: 0 0 14px;
  color: #596579;
  font-size: 16px;
  line-height: 1.9;
}

@media (max-width: 820px) {
  .site-header {
    min-height: 64px;
  }

  nav {
    display: none;
  }

  .hero,
  .status-section {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 52px 0 64px;
  }

  .app-preview {
    width: 100%;
    justify-self: stretch;
  }

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

  footer {
    flex-direction: column;
  }
}