:root {
  color-scheme: light;
  --background: #f5f7f4;
  --surface: #ffffff;
  --surface-soft: #edf4ef;
  --ink: #18231c;
  --muted: #5d6b62;
  --line: #dce5de;
  --accent: #2f7650;
  --accent-strong: #225c3d;
  --shadow: 0 18px 50px rgba(32, 66, 45, 0.09);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(102, 164, 124, 0.12), transparent 30rem),
    var(--background);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-strong);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

.site-header {
  border-bottom: 1px solid rgba(220, 229, 222, 0.85);
  background: rgba(245, 247, 244, 0.88);
  backdrop-filter: blur(14px);
}

.header-inner,
.page-shell,
.site-footer {
  width: min(100% - 40px, 960px);
  margin-inline: auto;
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 680;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: var(--accent);
  font-size: 14px;
  font-weight: 750;
  box-shadow: 0 6px 16px rgba(47, 118, 80, 0.24);
}

.header-note {
  color: var(--muted);
  font-size: 14px;
}

.page-shell {
  padding-block: 56px 72px;
}

.hero {
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 14px;
  font-size: clamp(32px, 7vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 14px;
  font-size: 23px;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.lede {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.policy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}

.core-notice {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 6px 14px 14px 6px;
  background: var(--surface-soft);
}

.core-notice strong {
  display: block;
  margin-bottom: 4px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 28px;
  align-items: start;
  margin-top: 28px;
}

.policy-content,
.policy-nav,
.app-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.policy-content {
  padding: 34px;
}

.policy-section + .policy-section {
  margin-top: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.policy-section p:last-child,
.policy-section ul:last-child {
  margin-bottom: 0;
}

ul {
  padding-left: 1.25em;
}

li + li {
  margin-top: 8px;
}

.policy-nav {
  position: sticky;
  top: 20px;
  padding: 18px;
  font-size: 14px;
}

.policy-nav strong {
  display: block;
  margin-bottom: 8px;
}

.policy-nav a {
  display: block;
  padding-block: 5px;
  color: var(--muted);
  text-decoration: none;
}

.policy-nav a:hover {
  color: var(--accent-strong);
}

.app-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.app-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.app-card:hover {
  border-color: #b8cfbf;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(32, 66, 45, 0.08);
}

.app-identity {
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: var(--accent);
  font-size: 22px;
  font-weight: 750;
}

.app-card h2 {
  margin: 0 0 2px;
  font-size: 19px;
}

.app-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.app-action {
  flex: 0 0 auto;
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 680;
  text-decoration: none;
}

.app-action span {
  margin-left: 4px;
}

.site-footer {
  padding-block: 28px 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.site-footer p {
  margin-bottom: 4px;
}

@media (max-width: 760px) {
  .header-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 28px, 960px);
  }

  .header-note {
    display: none;
  }

  .page-shell {
    padding-block: 28px 48px;
  }

  .hero,
  .policy-content {
    padding: 24px 20px;
    border-radius: 18px;
  }

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

  .policy-nav {
    position: static;
    order: -1;
  }

  .policy-nav strong {
    margin-bottom: 6px;
  }

  .policy-nav a {
    display: inline-block;
    margin-right: 14px;
  }

  .app-card {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .app-card {
    transition: none;
  }
}