/* === 共享样式 - 新生儿健康宣教 === */
:root {
  --bg: #fff9f5;
  --bg2: #fef0e8;
  --bg3: #f0f7ff;
  --ink: #2d2d2d;
  --muted: #7a7a7a;
  --rule: #f0e0d6;
  --accent: #ff8a6b;
  --accent2: #5eaaef;
  --accent3: #8bd4a4;
  --pink: #ffb8c6;
  --yellow: #ffd97a;
  --radius: 16px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  min-height: 100vh;
}

/* === 顶部导航 === */
.top-bar {
  background: linear-gradient(135deg, var(--accent), #ff6b8a);
  color: white;
  padding: 0.8rem 1.2rem;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(255,138,107,0.3);
}
.top-bar .back-link {
  color: white;
  text-decoration: none;
  opacity: 0.9;
  font-size: 0.9rem;
}
.top-bar .back-link:hover { opacity: 1; }
.top-bar .nav-title {
  font-weight: 600;
  font-size: 0.9rem;
}

/* === 页面头部 === */
.page-hero {
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
.page-hero .part-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  padding: 0.2rem 0.8rem;
  border-radius: 99px;
  margin-bottom: 0.8rem;
  letter-spacing: 0.1em;
}
.page-hero h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.page-hero .hero-desc {
  font-size: 0.9rem;
  color: var(--muted);
}

/* === Hero 图片 === */
.hero-image {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* === 内容区域 === */
.content {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.2rem 3rem;
}

/* === 章节卡片 === */
.section-card {
  background: white;
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border: 1px solid var(--rule);
}
.section-card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.section-card h2 .emoji {
  font-size: 1.2rem;
}
.section-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin: 1rem 0 0.5rem;
}
.section-card p {
  font-size: 0.92rem;
  color: #444;
  margin-bottom: 0.6rem;
}

/* === 列表样式 === */
.info-list {
  list-style: none;
  padding: 0;
}
.info-list li {
  font-size: 0.9rem;
  color: #444;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.5rem;
  background: var(--bg);
  border-radius: 10px;
  border-left: 3px solid var(--accent);
  line-height: 1.7;
}
.info-list li strong {
  color: var(--ink);
  font-weight: 600;
}

/* === 重点提示 === */
.tip-box {
  background: #fff5e6;
  border: 1px solid #ffd97a;
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: 0.88rem;
  color: #8a6d3b;
  line-height: 1.7;
}
.tip-box::before {
  content: "💡";
  margin-right: 0.3rem;
}

/* === 警告框 === */
.warn-box {
  background: #fff0f0;
  border: 1px solid #ffb8c6;
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: 0.88rem;
  color: #c0392b;
  line-height: 1.7;
}
.warn-box::before {
  content: "⚠️";
  margin-right: 0.3rem;
}

/* === 就医指征 === */
.alert-box {
  background: #ffe8e8;
  border: 2px solid #ff6b6b;
  border-radius: 12px;
  padding: 1.2rem;
  margin: 1rem 0;
}
.alert-box .alert-title {
  font-size: 1rem;
  font-weight: 700;
  color: #e74c3c;
  margin-bottom: 0.6rem;
}

/* === 误区卡片 === */
.myth-card {
  background: linear-gradient(135deg, #f8f0ff 0%, #f0f0ff 100%);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin: 0.8rem 0;
}
.myth-card .myth-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #8b5cf6;
  margin-bottom: 0.3rem;
}
.myth-card .myth-answer {
  font-size: 0.85rem;
  color: #059669;
  font-weight: 600;
}

/* === 页脚 === */
.page-footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  margin-top: 2rem;
}
.page-footer a {
  color: var(--accent2);
  text-decoration: none;
}

/* === 响应式 === */
@media (max-width: 600px) {
  .page-hero h1 { font-size: 1.3rem; }
  .section-card { padding: 1.2rem; }
  .content { padding: 0 1rem 2rem; }
}