/* ===== 运动康复诊所 - 全站样式 ===== */
/* 医疗蓝 #1976D2 | 健康绿 #43A047 | 纯净白 #FFFFFF */

:root {
  --primary-blue: #1976D2;
  --primary-dark: #0D47A1;
  --accent-green: #43A047;
  --accent-light: #66BB6A;
  --white: #FFFFFF;
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EEEEEE;
  --gray-300: #E0E0E0;
  --gray-600: #757575;
  --gray-800: #424242;
  --gray-900: #212121;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  color: var(--gray-800);
  background: var(--white);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-green));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.main-nav a {
  padding: 8px 16px;
  color: var(--gray-800);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-blue);
  background: rgba(25, 118, 210, 0.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero区域 ===== */
.hero {
  position: relative;
  height: 600px;
  margin-top: 70px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,71,161,0.75) 0%, rgba(25,118,210,0.55) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  color: var(--white);
  max-width: 650px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-content p {
  font-size: 1.1rem;
  opacity: 0.92;
  margin-bottom: 28px;
  line-height: 1.8;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--accent-green);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-light);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--primary-blue);
}

/* ===== 通用Section ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2rem;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.section-title p {
  font-size: 1rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  height: 200px;
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.card:hover .card-img img {
  transform: scale(1.05);
}

.card-body {
  padding: 24px;
}

.card-body h3 {
  font-size: 1.2rem;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.card-body p {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== 专家团队 ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.team-card {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.team-card:hover {
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 4px solid var(--gray-200);
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card h3 {
  font-size: 1.15rem;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.team-card .title {
  font-size: 0.9rem;
  color: var(--primary-blue);
  font-weight: 500;
  margin-bottom: 10px;
}

.team-card p {
  font-size: 0.88rem;
  color: var(--gray-600);
}

/* ===== 流程步骤 ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.step-item {
  text-align: center;
  padding: 30px 20px;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-green));
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step-item h3 {
  font-size: 1.1rem;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--gray-600);
}

/* ===== 视频模块 ===== */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-col p,
.footer-col a {
  font-size: 0.9rem;
  color: var(--gray-300);
  line-height: 2;
}

.footer-col a:hover {
  color: var(--white);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li a {
  display: block;
  padding: 3px 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-600);
}

/* ===== 内页Hero ===== */
.page-hero {
  height: 350px;
  margin-top: 70px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,71,161,0.8) 0%, rgba(67,160,71,0.5) 100%);
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
}

.page-hero-content h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-hero-content p {
  font-size: 1.05rem;
  opacity: 0.9;
}

/* ===== 内容区域 ===== */
.content-section {
  padding: 60px 0;
}

.content-block {
  margin-bottom: 40px;
}

.content-block h2 {
  font-size: 1.6rem;
  color: var(--gray-900);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--primary-blue);
}

.content-block h3 {
  font-size: 1.25rem;
  color: var(--gray-800);
  margin-bottom: 12px;
}

.content-block p {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

.content-block ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.content-block ul li {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 2;
}

/* ===== 表单 ===== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(25,118,210,0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== 两栏布局 ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.two-col-reverse {
  direction: rtl;
}

.two-col-reverse > * {
  direction: ltr;
}

.img-rounded {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--gray-600);
}

.breadcrumb a {
  color: var(--gray-600);
}

.breadcrumb a:hover {
  color: var(--primary-blue);
}

.breadcrumb span {
  margin: 0 8px;
}

/* ===== 设备展示 ===== */
.equipment-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--gray-200);
}

.equipment-item:last-child {
  border-bottom: none;
}

.equipment-item:nth-child(even) {
  direction: rtl;
}

.equipment-item:nth-child(even) > * {
  direction: ltr;
}

/* ===== 案例对比 ===== */
.case-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
}

.case-header {
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-green));
  color: var(--white);
}

.case-header h3 {
  font-size: 1.15rem;
}

.case-body {
  padding: 24px;
}

.case-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.case-meta span {
  font-size: 0.88rem;
  color: var(--gray-600);
  background: var(--gray-100);
  padding: 4px 12px;
  border-radius: 20px;
}

/* ===== 地图 ===== */
.map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 350px;
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .hero {
    height: 500px;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 50px 0;
  }

  .two-col,
  .equipment-item {
    grid-template-columns: 1fr;
  }

  .equipment-item:nth-child(even) {
    direction: ltr;
  }

  .page-hero {
    height: 260px;
  }

  .page-hero-content h1 {
    font-size: 1.6rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero {
    height: 420px;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .section-title h2 {
    font-size: 1.5rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 懒加载占位 ===== */
img[loading="lazy"] {
  background: var(--gray-100);
  min-height: 100px;
}

/* ===== 联系信息条 ===== */
.top-bar {
  background: var(--primary-blue);
  color: var(--white);
  font-size: 0.85rem;
  padding: 8px 0;
  text-align: center;
}

.top-bar a {
  color: var(--white);
  margin: 0 12px;
}

/* ===== 特色标签 ===== */
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(25,118,210,0.08);
  color: var(--primary-blue);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  margin: 3px 4px;
}

/* ===== 统计数字 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  text-align: center;
  padding: 40px 0;
}

.stat-item .number {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.stat-item .label {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin-top: 4px;
}