:root {
  --green: #2e7d5b;
  --green-light: #e8f3ee;
  --ink: #26332d;
  --muted: #6b7a72;
  --line: #dde8e2;
  --bg: #fafcfa;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 20px; font-weight: 700; color: var(--green); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--green); }

.hero { padding: 52px 0 40px; text-align: center; }
.hero h1 { font-size: 30px; line-height: 1.4; }
.hero p.sub { color: var(--muted); margin-top: 12px; font-size: 16px; }

.cards { display: grid; grid-template-columns: 1fr; gap: 14px; padding-bottom: 40px; }
@media (min-width: 640px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 18px; text-decoration: none; color: inherit; display: block;
  transition: border-color .15s;
}
.card:hover { border-color: var(--green); }
.card .t { font-size: 18px; font-weight: 600; color: var(--green); }
.card .d { color: var(--muted); font-size: 14px; margin-top: 6px; }

.panel {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 20px; margin: 24px 0;
}
.panel h2 { font-size: 20px; margin-bottom: 12px; }
.panel p { margin-bottom: 10px; }

textarea {
  width: 100%; min-height: 220px; padding: 14px; font-size: 15px;
  border: 1px solid var(--line); border-radius: 10px; resize: vertical;
  font-family: inherit; line-height: 1.7;
}
textarea:focus { outline: 2px solid var(--green-light); border-color: var(--green); }

button.primary {
  background: var(--green); color: #fff; border: none; border-radius: 10px;
  padding: 12px 28px; font-size: 16px; cursor: pointer; margin-top: 14px;
}
button.primary:disabled { opacity: .5; cursor: wait; }

.privacy-note {
  background: var(--green-light); border-radius: 10px;
  padding: 12px 14px; font-size: 13.5px; color: var(--green); margin-top: 14px;
}

.result {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 20px; margin: 24px 0; white-space: normal;
}
.result h3 { font-size: 17px; margin: 18px 0 8px; color: var(--green); }
.result h3:first-child { margin-top: 0; }
.result p { margin-bottom: 10px; }
.result ul { padding-left: 22px; margin-bottom: 10px; }
.result hr { border: none; border-top: 1px solid var(--line); margin: 16px 0; }
.result .disclaimer { color: var(--muted); font-size: 13.5px; border-top: 1px dashed var(--line); padding-top: 12px; margin-top: 16px; }

.status-err {
  background: #fdf0ef; color: #a33; border-radius: 10px;
  padding: 12px 14px; margin: 16px 0; font-size: 14px;
}

/* 体质测试 */
.q { margin-bottom: 20px; }
.q .qt { font-size: 15.5px; margin-bottom: 8px; }
.q label { display: inline-flex; align-items: center; margin-right: 16px; font-size: 14px; color: var(--muted); cursor: pointer; }
.q input { margin-right: 5px; accent-color: var(--green); }

.tizhi-result { border-left: 4px solid var(--green); padding-left: 14px; }

ul.advice { padding-left: 20px; margin: 8px 0 4px; }
ul.advice li { margin-bottom: 6px; }

/* 科普 */
article { padding: 8px 0 24px; }
article h2 { font-size: 21px; margin: 18px 0 10px; }
article p { margin-bottom: 12px; }
.backlink { font-size: 14px; color: var(--muted); text-decoration: none; display: inline-block; margin: 18px 0 6px; }
.backlink:hover { color: var(--green); }

footer.site {
  border-top: 1px solid var(--line); padding: 26px 0 40px; margin-top: 40px;
  color: var(--muted); font-size: 13px; background: #fff;
}
footer.site p { margin-bottom: 4px; }
footer.site a { color: var(--muted); text-decoration: none; margin: 0 4px; }
footer.site a:hover { color: var(--green); }