/* ==========================================================================
   红杏云机场 (Hongxing Cloud) 纯原生极简高速响应式样式表
   主题风格：优雅玫瑰粉 (Rose Pink Theme)
   零重型框架依赖 | 首屏秒开 | WCAG 2.1 AA 对比度标准 | 移动端触控友好
   ========================================================================== */

:root {
  /* 玫瑰粉与梅花鹿休憩背景主题专属调色板 */
  --bg-primary: #fff0f3;          /* 主背景：轻盈通透的纯正玫瑰粉 */
  --bg-secondary: rgba(255, 228, 230, 0.85); /* 次要背景：稍深一层半透优雅玫瑰粉 */
  --bg-card: rgba(255, 255, 255, 0.92);     /* 卡片背景：微透高质感白卡片，突出梅花鹿背景质感 */
  --bg-card-hover: rgba(255, 255, 255, 0.98);/* 卡片悬停微粉光泽 */
  --bg-glass: rgba(255, 240, 243, 0.92);    /* 玫瑰粉磨砂毛玻璃页眉 */
  
  --text-primary: #1e293b;        /* 主标题与正文高对比度深色文本 (对比度 > 12:1) */
  --text-secondary: #475569;      /* 次级正文文本 (对比度 > 6:1) */
  --text-muted: #64748b;          /* 辅助/日期说明文本 (对比度 > 4.6:1) */
  
  --accent: #e11d48;              /* 核心高饱和玫瑰粉红 (Rose 600) */
  --accent-hover: #be123c;        /* 悬浮深玫瑰色 (Rose 700) */
  --accent-light: rgba(225, 29, 72, 0.08); /* 浅透玫瑰红粉光晕 */
  --accent-gradient: linear-gradient(135deg, #e11d48 0%, #fb7185 100%); /* 玫瑰金粉渐变 */
  
  --success: #059669;
  --warning: #d97706;
  --border-color: #fecdd3;        /* 玫瑰粉精致分割线与边框 (Rose 200) */
  --border-light: #fda4af;        /* 边框浅色强调 (Rose 300) */
  
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  background-image: url('images/deer-bg.jpg');
  background-attachment: fixed;
  background-position: center top;
  background-repeat: no-repeat;
  background-size: cover;
  color: var(--text-primary);
  overflow-x: hidden;
}

/* 键盘访问：跳转到主要内容 */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #ffffff;
  padding: 12px 20px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* 焦点样式与无障碍 */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* 锚点防遮挡 */
[id] {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

/* 排版规范 */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
h2 { font-size: 1.85rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: inline-block;
  vertical-align: middle;
}

/* 容器布局 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 按钮规范 (满足 touch target >= 44x44px) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  min-width: 130px;
  padding: 10px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(225, 29, 72, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #be123c 0%, #e11d48 100%);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.4);
  color: #ffffff;
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.05);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  min-height: 40px;
  padding: 8px 16px;
  font-size: 0.9rem;
}

.btn-lg {
  min-height: 52px;
  padding: 14px 32px;
  font-size: 1.1rem;
}

/* 页眉与导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(225, 29, 72, 0.04);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-logo:hover {
  text-decoration: none;
}

.brand-logo svg {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 4px;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
  text-decoration: none;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 主视觉区 (Hero) */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

/* 停用原全屏遮罩伪元素，彻底消除对两侧小鹿与森林的压暗 */
.hero-section::before {
  display: none !important;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

/* Hero 主标题卡片：背景完全透明，其他排版、文字与按钮保持不变 */
.hero-lens-card {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 36px 32px 32px;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.hero-lens-card::before {
  display: none !important;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fda4af;
  border: 1px solid rgba(254, 205, 211, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.25;
  color: #FFFFFF !important;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9), 0 1px 3px rgba(0, 0, 0, 0.95);
}

.hero-title .text-gradient {
  background: none !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: #FFFFFF !important;
  color: #FFFFFF !important;
  filter: none !important;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9), 0 1px 3px rgba(0, 0, 0, 0.95);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: #F8FAFC !important;
  font-weight: 500;
  line-height: 1.8;
  max-width: 780px;
  margin: 0 auto 32px;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9);
  -webkit-font-smoothing: antialiased;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-highlights {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 12px 28px;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  max-width: 860px;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #f8fafc;
  font-size: 0.925rem;
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

.highlight-item svg {
  color: var(--success);
  width: 20px;
  height: 20px;
}

/* 区块通用样式 */
.section {
  padding: 70px 0;
}

.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* 卡片网格 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: 0 4px 18px rgba(225, 29, 72, 0.05);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px rgba(225, 29, 72, 0.12);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: rgba(225, 29, 72, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

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

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 流媒体与 AI 支持图卡 */
.media-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: 0 4px 18px rgba(225, 29, 72, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 24px;
}

.tech-badge {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: #9f1239;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

/* 套餐价格表容器与表格 */
.pricing-wrapper {
  margin-top: 30px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  box-shadow: 0 4px 20px rgba(225, 29, 72, 0.06);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 650px;
}

.pricing-table caption {
  padding: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: right;
  caption-side: bottom;
}

.pricing-table th,
.pricing-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.pricing-table thead th {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.pricing-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

.plan-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  display: block;
}

.plan-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: rgba(225, 29, 72, 0.1);
  color: var(--accent);
  margin-top: 4px;
  font-weight: 600;
}

.plan-price {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
}

.plan-price span {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* 用户评价卡片 */
.review-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: 0 4px 18px rgba(225, 29, 72, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: #f59e0b;
  margin-bottom: 12px;
  display: flex;
  gap: 4px;
}

.review-stars svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: rgba(225, 29, 72, 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
}

.author-info h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.author-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 常见问题 (FAQ) - 默认展开 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 2px 10px rgba(225, 29, 72, 0.04);
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform var(--transition-fast);
  line-height: 1;
  margin-left: 12px;
}

.faq-item[open] summary::after {
  content: "−";
  color: var(--accent);
}

.faq-content {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  background-color: #fffbfc;
}

.faq-content a {
  text-decoration: underline;
  font-weight: 500;
}

/* 页脚规范：严格只保留 4 个新页面入口 */
.site-footer {
  background-color: #ffe4e6;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  margin-top: auto;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 600;
  transition: color var(--transition-fast);
  padding: 8px 12px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-link:hover {
  color: var(--accent);
  text-decoration: none;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(225, 29, 72, 0.15);
  padding-top: 24px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* 知识科普专栏与文章页特定样式 */
.article-header {
  padding: 50px 0 30px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 16px;
  flex-wrap: wrap;
}

.article-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #334155;
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-content ul, .article-content ol {
  margin: 16px 0 20px 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 14px 20px;
  background-color: #ffffff;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  color: var(--text-primary);
  box-shadow: 0 2px 12px rgba(225, 29, 72, 0.05);
}

.article-cta-box {
  background: linear-gradient(135deg, #ffffff 0%, #ffe4e6 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  margin: 44px 0;
  box-shadow: 0 8px 30px rgba(225, 29, 72, 0.08);
}

.article-cta-box h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.article-cta-box p {
  max-width: 600px;
  margin: 0 auto 24px;
}

/* 科普文章卡片列表 */
.article-card {
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 18px rgba(225, 29, 72, 0.05);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 10px 25px rgba(225, 29, 72, 0.12);
}

.article-card-tag {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.article-card-title {
  font-size: 1.2rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-card-title a {
  color: var(--text-primary);
}

.article-card-title a:hover {
  color: var(--accent);
}

.article-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* 响应式媒体查询适配 (严格满足 360, 390, 768, 1440 像素) */
@media (max-width: 992px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }
  
  .header-inner {
    flex-direction: column;
    padding: 12px 0;
    gap: 12px;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 18px;
  }
  
  .hero-lens-card {
    padding: 24px 14px 20px;
    background: transparent !important;
  }
  
  .hero-lens-card::before {
    display: none !important;
  }

  .hero-title {
    font-size: 1.85rem;
    line-height: 1.3;
  }
  
  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.65;
  }
  
  .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .hero-highlights {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    border-radius: var(--radius-lg);
  }
  
  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
  
  .btn {
    width: 100%;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta-group .btn {
    width: 100%;
  }
}

@media (max-width: 390px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }
}

@media (max-width: 360px) {
  .hero-title {
    font-size: 1.6rem;
  }
  
  .nav-links {
    gap: 8px 12px;
    font-size: 0.85rem;
  }
  
  .brand-logo {
    font-size: 1.15rem;
  }
}

/* 动效友好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}