/* ============================================
   源爱医学官方网站 — 全局样式
   设计系统：暖白底 + 品牌红 #C0392B
   ============================================ */

:root {
  --color-primary: #C0392B;
  --color-primary-dark: #A93226;
  --color-primary-light: #E74C3C;
  --color-accent: #D35400;
  --color-bg: #FDF8F6;
  --color-bg-alt: #FFF5F3;
  --color-card: #FFFFFF;
  --color-text: #1F1F1F;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #777777;
  --color-border: #ECE3E0;
  --color-success: #27AE60;
  --color-warning: #F39C12;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(28, 8, 5, 0.06);
  --shadow-md: 0 8px 24px rgba(28, 8, 5, 0.10);
  --shadow-lg: 0 16px 40px rgba(28, 8, 5, 0.14);
  --transition: 0.25s ease;
  --max-width: 1200px;
  --header-height: 76px;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 0.6em;
}

p {
  margin-bottom: 1em;
}

ul, ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.4em;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(192, 57, 43, 0.35);
}

.btn-primary:hover {
  color: #fff;
  box-shadow: 0 6px 20px rgba(192, 57, 43, 0.45);
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-white:hover {
  color: var(--color-primary-dark);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 头部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 44px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

.menu-toggle svg {
  width: 28px;
  height: 28px;
}

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 80px) 0 96px;
  background: linear-gradient(135deg, #FFF8F6 0%, #FFEEEB 50%, #FFF5F3 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}

.badge svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  position: relative;
  z-index: 2;
  max-width: 100%;
}

.hero-decoration {
  position: absolute;
  inset: -60px;
  z-index: 1;
  opacity: 0.7;
}

/* 通用卡片 */
.card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  margin-bottom: 20px;
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.card-text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* 网格 */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* 特色条目 */
.feature-list {
  display: grid;
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(192, 57, 43, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.feature-check svg {
  width: 14px;
  height: 14px;
}

.feature-body h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.feature-body p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 数据展示 */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.stat-item {
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* 流程步骤 */
.steps {
  display: flex;
  gap: 24px;
  counter-reset: step;
}

.step {
  flex: 1;
  position: relative;
  padding-top: 24px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
}

.step-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 48px 24px 28px;
  text-align: center;
  border: 1px solid var(--color-border);
  height: 100%;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 五维模型 */
.wuwei-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 40px 0;
  padding: 28px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.chain-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--color-bg-alt);
  color: var(--color-primary-dark);
}

.chain-arrow {
  color: var(--color-primary);
}

.chain-arrow svg {
  width: 20px;
  height: 20px;
}

/* 定价卡片 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.pricing-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 36px 28px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.pricing-card.recommended {
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px rgba(192, 57, 43, 0.15);
  transform: scale(1.03);
}

.pricing-card.recommended:hover {
  transform: scale(1.03) translateY(-6px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
}

.pricing-name {
  font-size: 1.4rem;
  text-align: center;
  margin-bottom: 8px;
}

.pricing-price {
  text-align: center;
  margin-bottom: 24px;
}

.pricing-price .currency {
  font-size: 1.2rem;
  color: var(--color-primary);
  font-weight: 600;
}

.pricing-price .amount {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.pricing-price .unit {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.pricing-original {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li.included::before {
  content: '';
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23C0392B' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/contain no-repeat;
}

.pricing-features li.missing {
  color: var(--color-text-muted);
}

.pricing-features li.missing::before {
  content: '';
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23999999' stroke-width='2.5'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M6 18L18 6M6 6l12 12'/%3E%3C/svg%3E") center/contain no-repeat;
}

.pricing-card .btn {
  width: 100%;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  background: #fff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  background: var(--color-bg-alt);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: #FFFBFA;
}

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

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.12);
}

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


/* CTA 区块 */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  text-align: center;
  padding: 80px 0;
}

.cta-section .section-title {
  color: #fff;
}

.cta-section .section-desc {
  color: rgba(255, 255, 255, 0.85);
}

/* Footer */
.footer {
  background: #2A1F1D;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo-img {
  height: 40px;
  width: auto;
  max-width: 100%;
  margin-bottom: 16px;
  background: #fff;
  padding: 8px 12px;
  border-radius: 6px;
}

.footer-title {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact p {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* 提示条 */
.notice-bar {
  background: #FFF8E6;
  border-left: 4px solid var(--color-warning);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

/* 合规边界区块 */
.compliance-box {
  background: linear-gradient(135deg, #FFF8E6, #FFEFE6);
  border: 1px solid rgba(192, 57, 43, 0.22);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 32px;
}
.compliance-box .split-title {
  margin-top: 8px;
}
.compliance-box p {
  margin-top: 14px;
  line-height: 1.85;
  color: var(--color-text-secondary);
}
.compliance-box p:first-of-type {
  margin-top: 16px;
}

/* 免责声明列表 */
.disclaimer-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.disclaimer-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
}
.disclaimer-item h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}
.disclaimer-item p {
  line-height: 1.85;
  color: var(--color-text-secondary);
}

/* 表单勾选框 */
.form-check {
  margin-top: 16px;
}
.form-check-label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  line-height: 1.5;
}
.form-checkbox {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
  cursor: pointer;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(192, 57, 43, 0.08);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-right: 6px;
  margin-bottom: 6px;
}

/* 页面内 Hero 小版 */
.page-hero {
  padding: calc(var(--header-height) + 56px) 0 64px;
  background: linear-gradient(135deg, #FFF8F6 0%, #FFEEEB 100%);
  text-align: center;
}

.page-hero .section-title {
  font-size: 2.6rem;
  margin-bottom: 12px;
}

.page-hero .section-desc {
  max-width: 640px;
  margin: 0 auto;
}

/* 分栏内容 */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-section.reverse {
  direction: rtl;
}

.split-section.reverse > * {
  direction: ltr;
}

.split-title {
  font-size: 2rem;
  margin-bottom: 20px;
}

.split-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #FFEEEB, #FFE0DC);
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.split-visual svg {
  width: 70%;
  height: auto;
  opacity: 0.9;
}

/* 滚动显示 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .pricing-card.recommended {
    transform: none;
    order: -1;
  }

  .pricing-card.recommended:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .hero {
    padding: calc(var(--header-height) + 48px) 0 64px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-badges {
    justify-content: center;
  }

  .btn-group {
    justify-content: center;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .steps {
    flex-direction: column;
  }

  .split-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .split-section.reverse {
    direction: ltr;
  }

  .split-visual {
    min-height: 280px;
  }

  .page-hero .section-title {
    font-size: 2rem;
  }

  .wuwei-chain {
    flex-direction: column;
    align-items: stretch;
  }

  .chain-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  /* 移动端导航 */
  .menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .header-cta .btn,
  .header-phone {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.9rem;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .pricing-price .amount {
    font-size: 2rem;
  }
}