:root {
  color-scheme: light;
  --paper: #f7f3eb;
  --surface: #fffefa;
  --ink: #38291f;
  --muted: #776b60;
  --line: #e9dfd2;
  --green: #557a61;
  --green-soft: #edf2eb;
  --orange: #c96b31;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--paper); }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
}

.page-shell {
  width: min(100% - 40px, 1040px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.brand { font-size: 22px; font-weight: 750; letter-spacing: .02em; }
.brand span { color: var(--green); }
.brand-note { color: var(--muted); font-size: 14px; letter-spacing: .08em; }

.hero {
  padding: clamp(64px, 11vw, 120px) clamp(8px, 5vw, 52px) 76px;
}

.eyebrow, .section-kicker {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 68px);
  line-height: 1.2;
  letter-spacing: .02em;
}

.hero-subtitle {
  margin: 18px 0 10px;
  color: var(--green);
  font-size: clamp(20px, 3vw, 27px);
  font-weight: 600;
}

.hero-copy { max-width: 650px; margin: 0; color: var(--muted); font-size: 17px; }

.content-section, .service-note {
  margin-bottom: 18px;
  padding: clamp(26px, 5vw, 44px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.content-section h2, .service-note h2 {
  margin: 0 0 14px;
  font-size: 23px;
  line-height: 1.45;
}

.content-section p:not(.section-kicker), .service-note p { max-width: 780px; margin: 0; color: var(--muted); }

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.category-card {
  display: flex;
  min-height: 104px;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
}

.category-mark { color: var(--green); font-size: 12px; letter-spacing: .12em; }

.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.split-section > div + div { padding-left: 36px; border-left: 1px solid var(--line); }

.service-note { border-color: #d9e4d8; background: #f1f5ef; }
.service-note h2 { font-size: 19px; }

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 24px 4px 32px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.site-footer a:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }

@media (max-width: 640px) {
  .page-shell { width: min(100% - 28px, 520px); }
  .site-header { padding: 20px 0; }
  .brand { font-size: 19px; }
  .brand-note { font-size: 12px; }
  .hero { padding: 64px 6px 52px; }
  .hero-copy { font-size: 16px; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .category-card { min-height: 92px; padding: 13px 15px; }
  .split-section { grid-template-columns: 1fr; gap: 28px; }
  .split-section > div + div { padding: 0; border: 0; }
  .site-footer { flex-direction: column; }
}