:root {
  --blue: #185FA5;
  --blue-dark: #0C447C;
  --teal: #1D9E75;
  --teal-dark: #0F6E56;
  --ink: #1B2A33;
  --ink-2: #5B6B77;
  --ink-3: #8A97A2;
  --line: #E2E8EE;
  --bg: #FFFFFF;
  --bg-soft: #F2F5F9;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.92);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(180%) blur(8px);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 500; font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.menu { display: flex; gap: 26px; font-size: 14px; }
.menu a { color: var(--ink-2); }
.menu a:hover { color: var(--blue); text-decoration: none; }

/* hero */
.hero {
  display: grid; grid-template-columns: 1.35fr .65fr;
  gap: 40px; align-items: center; padding: 72px 24px 64px;
}
.hero h1 { font-size: 34px; line-height: 1.35; font-weight: 600; letter-spacing: .5px; }
.hero p { margin-top: 18px; color: var(--ink-2); font-size: 15px; max-width: 46em; }
.hero-actions { margin-top: 28px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 10px 22px; border-radius: 8px;
  border: 1px solid var(--line); font-size: 14px; color: var(--ink);
}
.btn:hover { text-decoration: none; border-color: var(--blue); color: var(--blue); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff; }
.hero-art { width: 100%; max-width: 240px; justify-self: center; border-radius: 20px; }

/* section */
.section { padding: 64px 24px; }
.section.alt { background: var(--bg-soft); }
.section h2 { font-size: 24px; font-weight: 600; }
.lead { margin-top: 8px; color: var(--ink-2); font-size: 14px; }

/* cards */
.grid { margin-top: 32px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 22px 24px; display: flex; flex-direction: column;
}
.tag {
  align-self: flex-start; font-size: 12px; color: var(--teal-dark);
  background: #E1F5EE; border-radius: 999px; padding: 2px 12px; margin-bottom: 12px;
}
.card h3 { font-size: 16px; font-weight: 600; }
.card p { margin-top: 8px; font-size: 14px; color: var(--ink-2); }
.card ul { margin-top: 14px; padding-left: 0; list-style: none; border-top: 1px dashed var(--line); padding-top: 12px; }
.card li { font-size: 13px; color: var(--ink-2); padding-left: 16px; position: relative; line-height: 1.9; }
.card li::before {
  content: ""; position: absolute; left: 2px; top: 12px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--teal);
}

/* notes */
.notes { margin-top: 28px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.note { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; border-left: 3px solid var(--blue); }
.note h3 { font-size: 15px; font-weight: 600; }
.note p { margin-top: 8px; font-size: 14px; color: var(--ink-2); }

/* chips */
.chips { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.chips span {
  font-size: 13px; color: var(--ink-2); background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 14px;
}
.section:not(.alt) .chips span { background: var(--bg-soft); }

.about { margin-top: 18px; max-width: 62em; color: var(--ink-2); font-size: 15px; }
.about p + p { margin-top: 12px; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 44px; text-align: center; }
.foot-brand { font-weight: 600; font-size: 15px; }
.foot-note { margin-top: 6px; font-size: 13px; color: var(--ink-3); }
.foot-icp { margin-top: 12px; font-size: 13px; color: var(--ink-2); }
.foot-icp .sep { color: var(--line); margin: 0 8px; }
.foot-icp a { color: var(--ink-2); }
.foot-icp .police { vertical-align: -2px; margin-right: 4px; }
.foot-copy { margin-top: 8px; font-size: 12px; color: var(--ink-3); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 48px 24px; }
  .hero-art { display: none; }
  .hero h1 { font-size: 27px; }
  .grid { grid-template-columns: 1fr; }
  .notes { grid-template-columns: 1fr; }
  .menu { display: none; }
}