/* 取自 App 浅色主题（app/lib/core/theme/colors.dart）：同一套纸面、紫色和文字色。 */
:root {
  --desk: #f1ecf7;
  --paper: #ffffff;
  --paper-head: #fbf9fd;
  --divider: #e8e3ed;
  --primary: #65478f;
  --primary-soft: #a78bc8;
  --text: #30283d;
  --text-2: #70667c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --desk: #17141c;
    --paper: #221e2a;
    --paper-head: #26222f;
    --divider: #332d3e;
    --primary: #b39bdb;
    --primary-soft: #7f68a6;
    --text: #ede8f4;
    --text-2: #ada3bb;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--desk);
  color: var(--text);
  font: 17px/1.7 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

a { color: var(--primary); }

.top, main, footer, .doc {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}

.top nav { display: flex; gap: 20px; }
.top nav a { color: var(--text-2); text-decoration: none; font-size: 15px; }
.top nav a:hover { color: var(--primary); }

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 24px;
  padding: 48px 0 32px;
}

h1 { font-size: 44px; line-height: 1.3; margin: 0 0 20px; }
h2 { font-size: 22px; line-height: 1.4; margin: 20px 0 8px; }
.hero p { color: var(--text-2); max-width: 30em; margin: 0 0 12px; }
.status {
  display: inline-block;
  margin-top: 8px !important;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--primary) !important;
  font-size: 15px;
}
.hero-art { width: 100%; height: auto; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 32px 0;
}
.features article {
  background: var(--paper);
  border-radius: 24px;
  padding: 24px;
}
.features img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--divider);
}
.features p { color: var(--text-2); margin: 0; font-size: 15px; }

.privacy, .contact {
  background: var(--paper);
  border-radius: 24px;
  padding: 8px 32px 24px;
  margin: 24px 0;
}
.privacy ul { padding-left: 1.2em; color: var(--text-2); }
.privacy p a { margin-right: 20px; }
.contact p { color: var(--text-2); }

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 24px;
  padding-bottom: 40px;
  color: var(--text-2);
  font-size: 14px;
}
footer p { margin: 0; }
footer a { color: var(--text-2); margin-right: 16px; }
footer a:hover { color: var(--primary); }

/* 隐私政策、用户协议 */
.doc {
  max-width: 760px;
  background: var(--paper);
  border-radius: 24px;
  padding: 16px 40px 40px;
  margin-bottom: 24px;
}
.doc h1 { font-size: 30px; margin-top: 24px; }
.doc h2 { font-size: 20px; margin-top: 32px; }
.doc h3 { font-size: 17px; margin-top: 24px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 12px 0; }
.doc th, .doc td { border: 1px solid var(--divider); padding: 8px; text-align: left; vertical-align: top; }
.doc th { background: var(--paper-head); }
.table-wrap { overflow-x: auto; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .top nav { gap: 14px; }
  .top nav a:first-child { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 16px; }
  .hero-art { max-width: 280px; justify-self: center; order: -1; }
  h1 { font-size: 32px; }
  .features { grid-template-columns: 1fr; }
  .features img { max-width: 300px; margin: 0 auto; }
  .privacy, .contact { padding: 4px 20px 16px; }
  .doc { padding: 8px 20px 24px; border-radius: 0; }
}