:root {
  --bg: #f6faf6;
  --panel: #ffffff;
  --line: #dbe8dd;
  --text: #1e2a22;
  --muted: #66756c;
  --brand: #4d6a53;
  --brand-strong: #34523b;
  --shadow: 0 10px 26px rgba(47, 73, 55, 0.1);
  --maxw: 920px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top left, #f8fff8 0%, #f6faf6 34%, #f1f6f2 100%);
  color: var(--text);
  line-height: 1.75;
}

a {
  color: var(--brand-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 16px 56px;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.brand-logo {
  width: clamp(150px, 26vw, 240px);
  height: auto;
  display: block;
}

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 22px;
}

.tag {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #edf6ef;
  color: var(--brand);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
}

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

h1 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.intro {
  margin-top: 10px;
  color: var(--muted);
}

.section {
  margin-top: 18px;
}

.section h2 {
  font-size: 22px;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.section p + p {
  margin-top: 10px;
}

.box {
  margin-top: 12px;
  border: 1px solid var(--line);
  background: #fbfefb;
  border-radius: 14px;
  padding: 12px;
}

.box h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.list li + li {
  margin-top: 6px;
}

.faq {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq p {
  margin-top: 8px;
  color: var(--muted);
}

.related {
  margin-top: 16px;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

.related ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

.meta-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--muted);
}

@media (max-width: 680px) {
  .panel {
    padding: 16px;
  }
}