/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #1a6b8e;
  --primary-dark: #0d4a66;
  --primary-light: #e8f4f8;
  --accent: #c89b3c;
  --text: #333;
  --text-light: #666;
  --text-lighter: #999;
  --border: #e0e0e0;
  --bg: #f8f9fa;
  --white: #fff;
  --danger: #e74c3c;
  --success: #27ae60;
  --warning: #f39c12;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
}
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style-position: inside; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Header ===== */
.site-header {
  background: var(--white);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-top {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: 0.825rem;
  padding: 6px 0;
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-top a { color: rgba(255,255,255,0.85); }
.header-top a:hover { color: #fff; }
.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-dark);
}
.logo .logo-icon {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
}
.logo .logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.logo .logo-sub { font-size: 0.7rem; color: var(--text-lighter); font-weight: 400; }

/* Nav */
.nav { display: flex; gap: 5px; align-items: center; }
.nav a {
  padding: 8px 16px;
  border-radius: 6px;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all .2s;
}
.nav a:hover, .nav a.active {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #2980b9 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.hero h1 { font-size: 2.2rem; margin-bottom: 12px; font-weight: 700; }
.hero p { font-size: 1.1rem; opacity: 0.9; max-width: 700px; margin: 0 auto 24px; }
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 700; }
.hero-stat .label { font-size: 0.85rem; opacity: 0.8; }
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all .2s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #b3892f; color: #fff; transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { border-color: #fff; color: #fff; }

/* ===== Section ===== */
.section { padding: 50px 0; }
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: 1.8rem;
  color: var(--text);
  margin-bottom: 8px;
}
.section-title p { color: var(--text-light); font-size: 0.95rem; }
.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--accent);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* ===== Article Cards ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.article-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.article-card .card-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--primary-light);
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.article-card:hover .card-img img { transform: scale(1.05); }
.article-card .card-body {
  padding: 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card .card-category {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  align-self: flex-start;
}
.article-card .card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-excerpt {
  color: var(--text-light);
  font-size: 0.875rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-meta {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-lighter);
}

/* ===== Doctor Cards ===== */
.doctor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.doctor-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s;
  text-align: center;
  padding: 30px 20px;
}
.doctor-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.doctor-card .doctor-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 4px solid var(--primary-light);
}
.doctor-card .doctor-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.doctor-card .doctor-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.doctor-card .doctor-title {
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.doctor-card .doctor-hospital {
  color: var(--text-lighter);
  font-size: 0.825rem;
  margin-bottom: 12px;
}
.doctor-card .doctor-specialty {
  font-size: 0.85rem;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Article Detail ===== */
.article-detail {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}
.article-detail h1 {
  font-size: 1.8rem;
  margin-bottom: 12px;
  line-height: 1.4;
}
.article-meta {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-lighter);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.article-content {
  font-size: 1rem;
  line-height: 1.9;
}
.article-content h2 { font-size: 1.4rem; margin: 24px 0 12px; color: var(--primary-dark); }
.article-content h3 { font-size: 1.15rem; margin: 20px 0 10px; }
.article-content p { margin-bottom: 14px; }
.article-content ul, .article-content ol { margin: 12px 0; padding-left: 20px; }
.article-content li { margin-bottom: 6px; }
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.article-content table th, .article-content table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content table th { background: var(--primary-light); font-weight: 600; }

/* ===== Doctor Detail ===== */
.doctor-detail {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.doctor-header {
  display: flex;
  gap: 30px;
  padding: 40px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
}
.doctor-header .doctor-photo {
  width: 180px;
  height: 180px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: var(--shadow);
}
.doctor-header .doctor-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.doctor-header .doctor-info h1 {
  font-size: 1.8rem;
  margin-bottom: 6px;
}
.doctor-header .doctor-info .title {
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: 8px;
}
.doctor-header .doctor-info .hospital {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.doctor-body {
  padding: 40px;
}
.doctor-section {
  margin-bottom: 30px;
}
.doctor-section h3 {
  font-size: 1.1rem;
  color: var(--primary-dark);
  border-left: 4px solid var(--accent);
  padding-left: 12px;
  margin-bottom: 14px;
}
.doctor-section .content {
  color: var(--text-light);
  white-space: pre-wrap;
  font-size: 0.95rem;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--text);
  transition: all .2s;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .disabled { color: var(--text-lighter); cursor: not-allowed; }

/* ===== Sidebar ===== */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
}
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.sidebar-card h3 {
  font-size: 1.05rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}
.sidebar-categories li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  list-style: none;
}
.sidebar-categories li:last-child { border-bottom: none; }
.sidebar-categories a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.sidebar-categories a:hover { color: var(--primary); }
.sidebar-categories .count {
  background: var(--primary-light);
  color: var(--primary);
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
}
.sidebar-article-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.sidebar-article-item:last-child { border-bottom: none; }
.sidebar-article-item a {
  color: var(--text);
  font-size: 0.875rem;
  display: block;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sidebar-article-item a:hover { color: var(--primary); }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 40px 0 20px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 30px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 14px;
}
.footer-col p, .footer-col li {
  font-size: 0.875rem;
  margin-bottom: 8px;
}
.footer-col a { color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.825rem;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.875rem;
  color: var(--text-lighter);
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb .sep { margin: 0 6px; }

/* ===== Page Banner ===== */
.page-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 40px 0;
  text-align: center;
}
.page-banner h1 { font-size: 1.8rem; margin-bottom: 6px; }
.page-banner p { opacity: 0.85; font-size: 0.95rem; }

/* ===== Contact Info ===== */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--shadow);
}
.contact-card .icon {
  width: 60px;
  height: 60px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.5rem;
}
.contact-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.contact-card p { color: var(--text-light); font-size: 0.9rem; }

/* ===== Responsive ===== */
@media (max-width: 968px) {
  .layout-with-sidebar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .doctor-header { flex-direction: column; text-align: center; }
  .doctor-header .doctor-photo { margin: 0 auto; }
}
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 10px; box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .header-top { display: none; }
  .hero h1 { font-size: 1.6rem; }
  .hero p { font-size: 0.95rem; }
  .article-grid { grid-template-columns: 1fr; }
  .doctor-grid { grid-template-columns: 1fr 1fr; }
  .article-detail { padding: 20px; }
  .doctor-header, .doctor-body { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
}
@media (max-width: 480px) {
  .doctor-grid { grid-template-columns: 1fr; }
  .hero-stat .num { font-size: 1.5rem; }
}