/* ===================== 利象牌水晶健康煲 - 全局样式 ===================== */
:root {
  --primary: #1a3c6e;
  --primary-dark: #0f2544;
  --primary-light: #2d5fa0;
  --secondary: #c8a84b;
  --secondary-light: #e8c96b;
  --text: #1a1a2e;
  --text-light: #5a6a80;
  --bg: #f8f9fc;
  --white: #ffffff;
  --border: #e4e8f0;
  --shadow: 0 4px 20px rgba(26,60,110,0.08);
  --shadow-hover: 0 8px 32px rgba(26,60,110,0.16);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============ 导航栏 ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 60, 110, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 37, 68, 0.98);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav-logo .logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.nav-logo img {
  height: 42px;
  width: auto;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 60%;
}

.nav-cta {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light)) !important;
  color: var(--primary-dark) !important;
  font-weight: 700 !important;
  padding: 8px 20px !important;
}

/* 导航下拉菜单 */
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a {
  cursor: pointer;
}
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--primary-dark);
  border-radius: 8px;
  padding: 8px 0;
  min-width: 180px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  z-index: 100;
}
.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}
.nav-dropdown-menu a {
  display: block;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  border-radius: 0;
  white-space: nowrap;
}
.nav-dropdown-menu a:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(200,168,75,0.4) !important;
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 容器 ============ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,60,110,0.3);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: var(--primary-dark);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,168,75,0.4);
}

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

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

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

/* ============ 标题区 ============ */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(26,60,110,0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-title span {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ============ 页脚 ============ */
footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--secondary);
  display: inline-block;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: var(--transition);
}

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

.footer-col p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ============ 面包屑 ============ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--border); }

/* ============ 卡片 ============ */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

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

/* ============ 轮播通用 ============ */
.swiper-pagination-bullet-active {
  background: var(--secondary) !important;
}
.swiper-button-next,
.swiper-button-prev {
  color: var(--white) !important;
}

/* ============ Lightbox ============ */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

#lightbox.active { display: flex; }

.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

#lightbox img,
#lightbox video {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  transform-origin: center;
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.lightbox-close:hover { background: rgba(255,255,255,0.3); }

.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.lightbox-nav:hover { background: rgba(255,255,255,0.3); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--primary-dark); padding: 16px; gap: 4px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .nav-dropdown-menu { display: block !important; position: static; background: rgba(255,255,255,0.05); border-radius: 8px; box-shadow: none; padding: 4px 0 4px 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ============ 动画 ============ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-up { animation: fadeInUp 0.6s ease forwards; }
.animate-fade { animation: fadeIn 0.5s ease forwards; }

/* 滚动触发动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ 加载状态 ============ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-light);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Toast通知 */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success { background: #10b981; }
.toast.error { background: #ef4444; }

/* ============ 内容保护 ============ */
/* 禁止图片拖拽 */
img {
  -webkit-user-drag: none;
  user-select: none;
  -webkit-touch-callout: none;
}
/* 禁止视频拖拽和下载 */
video {
  -webkit-user-drag: none;
  user-select: none;
  -webkit-touch-callout: none;
}
/* 全局禁止文字选中（表单元素除外） */
body:not(.admin-page) {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
/* 允许输入框和表单元素选中 */
input, textarea, select, [contenteditable] {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}
/* 动态内容区图片保护：不可直接交互保存 */
#columnDynamicContent img,
.story-visual img,
.prod-preview-img img,
.about-prod-slide img {
  pointer-events: none;
}

/* ============ 栏目动态内容容器 ============ */
#columnDynamicContent {
  line-height: 1.8;
  color: var(--text);
}
#columnDynamicContent h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  margin: 40px 0 16px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--secondary);
  display: inline-block;
}
#columnDynamicContent h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin: 30px 0 12px;
}
#columnDynamicContent p {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.9;
}
#columnDynamicContent img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 16px 0;
  display: block;
}
#columnDynamicContent video {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 16px 0;
}
#columnDynamicContent ul, #columnDynamicContent ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
#columnDynamicContent li {
  margin-bottom: 8px;
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.7;
}
#columnDynamicContent a {
  color: var(--primary);
  text-decoration: underline;
}
#columnDynamicContent a:hover {
  color: var(--secondary);
}
#columnDynamicContent iframe {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 16px 0;
}