/* ===== 呼吸慢病护理知识平台 - 清新医疗风 ===== */
:root {
  --primary: #0f9d8f;
  --primary-dark: #0b7c71;
  --primary-light: #e6f5f3;
  --bg: #f6fbfa;
  --card: #ffffff;
  --text: #22403d;
  --text-light: #5f7a76;
  --line: #dceceA;
  --warn: #d9534f;
  --warn-bg: #fdf0ef;
  --info-bg: #eef6ff;
  --info: #2b6cb0;
  --radius: 14px;
  --shadow: 0 4px 18px rgba(15, 157, 143, 0.10);
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

a { color: var(--primary-dark); text-decoration: none; }
a:hover { color: var(--primary); }

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部导航 ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: var(--primary-dark); }
.brand .logo {
  width: 34px; height: 34px; border-radius: 9px; background: var(--primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.brand .logo svg { width: 20px; height: 20px; }
.nav-links { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-links a {
  padding: 7px 14px; border-radius: 999px; font-size: 14px; color: var(--text-light);
}
.nav-links a:hover { background: var(--primary-light); color: var(--primary-dark); }

/* ===== 首页 Hero ===== */
.hero {
  background: linear-gradient(135deg, #eafaf7 0%, #f6fbfa 60%);
  padding: 64px 0 56px;
}
.hero-inner { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; }
.hero-text { flex: 1 1 420px; }
.hero-text .badge {
  display: inline-block; background: var(--primary-light); color: var(--primary-dark);
  font-size: 13px; padding: 4px 14px; border-radius: 999px; margin-bottom: 16px; font-weight: 600;
}
.hero-text h1 { font-size: 34px; line-height: 1.35; margin-bottom: 14px; color: #163a36; }
.hero-text h1 span { color: var(--primary); }
.hero-text p { color: var(--text-light); font-size: 16px; max-width: 520px; }
.hero-art { flex: 0 0 320px; max-width: 100%; }

/* ===== 分类与卡片 ===== */
.section { padding: 42px 0 10px; }
.section-title { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.section-title .bar { width: 5px; height: 24px; border-radius: 3px; background: var(--primary); }
.section-title h2 { font-size: 22px; color: #163a36; }
.section-title small { color: var(--text-light); font-size: 13px; margin-left: 4px; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }

.disease-card {
  background: var(--card); border-radius: var(--radius); padding: 24px 22px;
  box-shadow: var(--shadow); border: 1px solid #eef5f4;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: block;
}
.disease-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(15, 157, 143, 0.16); color: inherit; }
.disease-card .icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--primary-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.disease-card .icon svg { width: 26px; height: 26px; }
.disease-card h3 { font-size: 17px; margin-bottom: 8px; color: #1c3d39; }
.disease-card p { font-size: 13.5px; color: var(--text-light); }
.disease-card .tags { margin-top: 12px; display: flex; gap: 6px; flex-wrap: wrap; }
.disease-card .tags span {
  font-size: 12px; color: var(--primary-dark); background: var(--primary-light);
  padding: 2px 10px; border-radius: 999px;
}
.disease-card .more { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--primary-dark); }

/* ===== 详情页 ===== */
.page-head { background: linear-gradient(135deg, #eafaf7, #f6fbfa); padding: 40px 0 34px; }
.crumb { font-size: 13px; color: var(--text-light); margin-bottom: 12px; }
.crumb a { color: var(--text-light); }
.page-head h1 { font-size: 30px; color: #163a36; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.page-head .cat-tag {
  font-size: 13px; font-weight: 600; color: var(--primary-dark);
  background: var(--primary-light); padding: 4px 14px; border-radius: 999px; vertical-align: middle;
}
.page-head .lead { margin-top: 12px; color: var(--text-light); max-width: 760px; }

.article { padding: 8px 0 30px; }
.block {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid #eef5f4; padding: 28px 30px; margin-bottom: 24px;
}
.block h2 {
  font-size: 20px; color: #163a36; margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.block h2 .num {
  width: 30px; height: 30px; border-radius: 9px; background: var(--primary); color: #fff;
  font-size: 15px; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.block ul, .block ol { padding-left: 22px; }
.block li { margin-bottom: 8px; }
.block li strong { color: var(--primary-dark); }

.tip {
  border-radius: 10px; padding: 14px 18px; margin: 14px 0; font-size: 14.5px;
}
.tip.info { background: var(--info-bg); color: var(--info); }
.tip.warn { background: var(--warn-bg); color: #a33; }
.tip b { display: block; margin-bottom: 4px; }

/* 图示占位（图文宣教位） */
.figure {
  margin: 18px 0; border: 1.5px dashed #a8d8d2; border-radius: 12px;
  background: #f4fbf9; padding: 26px 20px; text-align: center;
}
.figure .ph-icon { font-size: 12px; color: var(--primary-dark); letter-spacing: 1px; }
.figure svg { max-width: 100%; height: auto; }
.figure figcaption { font-size: 13px; color: var(--text-light); margin-top: 10px; }
.figure .upload-note { font-size: 12px; color: #9bb8b4; margin-top: 4px; }

/* 视频宣教位 */
.video-slot {
  margin: 18px 0; border: 1.5px dashed #a8d8d2; border-radius: 12px;
  background: #f4fbf9; aspect-ratio: 16 / 9; max-height: 420px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
}
.video-slot svg { width: 52px; height: 52px; opacity: 0.75; }
.video-slot .v-title { font-size: 15px; font-weight: 600; color: var(--primary-dark); }
.video-slot .v-note { font-size: 12.5px; color: #9bb8b4; }

/* ===== 免责声明与页脚 ===== */
.disclaimer {
  margin: 30px 0 10px; background: #fffbe9; border: 1px solid #f3e6ac;
  border-radius: 12px; padding: 16px 20px; font-size: 13.5px; color: #7a6a25;
}
.site-footer { background: #0f2e2b; color: #bcd6d2; padding: 30px 0 34px; margin-top: 40px; font-size: 13.5px; }
.site-footer .foot-grid { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.site-footer b { color: #fff; font-size: 15px; }
.site-footer a { color: #7fd0c7; }

@media (max-width: 640px) {
  .hero-text h1 { font-size: 26px; }
  .block { padding: 22px 18px; }
  .page-head h1 { font-size: 24px; }
}