/* ===================================================================
   樱花云 (Sakura Cloud) - 原生极速 CSS 样式表 (清爽浅色主题)
   零外部依赖 | 纯原生 CSS | 全端响应式 | 秒开级加载
=================================================================== */

/* 1. 基础重置与浅色系统变量 */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.92);
  --bg-section-alt: #f1f5f9;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --sakura-pink: #e11d48;
  --sakura-pink-light: #fff1f2;
  --sakura-glow: rgba(225, 29, 72, 0.25);
  --sakura-gradient: linear-gradient(135deg, #e11d48 0%, #f43f5e 45%, #8b5cf6 100%);
  --accent-purple: #7c3aed;
  --accent-blue: #2563eb;
  --accent-green: #059669;

  --border-subtle: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-focus: rgba(225, 29, 72, 0.4);

  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 12px 30px -4px rgba(15, 23, 42, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 10px 25px -5px rgba(225, 29, 72, 0.22);
  --container-width: 1200px;
}

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

html {
  font-family: var(--font-stack);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 12% 10%, rgba(244, 63, 94, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 88% 30%, rgba(139, 92, 246, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(59, 130, 246, 0.04) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

img, svg {
  display: block;
}

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

/* 2. 导航栏 (Header & Nav) */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.03);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo-text {
  background: var(--sakura-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  font-weight: 600;
}

.nav-link:hover {
  color: var(--sakura-pink);
}

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

/* 3. 按钮规范 (CTA Buttons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.45);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--sakura-pink-light);
  border-color: var(--sakura-pink);
  color: var(--sakura-pink);
  transform: translateY(-2px);
}

.btn-lg {
  min-height: 52px;
  padding: 14px 34px;
  font-size: 17px;
  font-weight: 700;
}

.btn-block {
  width: 100%;
}

/* 4. 主视觉区 (Hero Section) */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: #ffe4e6;
  border: 1px solid #fecdd3;
  color: #be123c;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero-title .gradient-text {
  background: var(--sakura-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

/* Hero 核心视觉美图展示 */
.hero-visual-box {
  margin: 0 auto 44px;
  max-width: 960px;
  position: relative;
  border-radius: var(--radius-xl);
  padding: 8px;
  background: linear-gradient(135deg, rgba(255, 117, 140, 0.45), rgba(255, 126, 179, 0.25), rgba(147, 51, 234, 0.35));
  box-shadow: 0 24px 60px -12px rgba(255, 117, 140, 0.28), 0 10px 24px -5px rgba(15, 23, 42, 0.08);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
}

.hero-visual-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 32px 70px -12px rgba(255, 117, 140, 0.38), 0 16px 32px -5px rgba(15, 23, 42, 0.12);
}

.hero-visual-inner {
  position: relative;
  border-radius: calc(var(--radius-xl) - 6px);
  overflow: hidden;
  background-color: #0f172a;
  aspect-ratio: 16 / 9;
}

.hero-visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-visual-box:hover .hero-visual-img {
  transform: scale(1.025);
}

.hero-visual-badge {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #ffffff;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  white-space: nowrap;
  letter-spacing: 0.5px;
  pointer-events: none;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.metric-item {
  text-align: center;
  padding: 8px 12px;
  border-right: 1px solid var(--border-subtle);
}

.metric-item:last-child {
  border-right: none;
}

.metric-val {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.metric-val span {
  color: var(--sakura-pink);
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* 5. 通用区块标题 */
.section {
  padding: 80px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 54px;
}

.section-tag {
  color: var(--sakura-pink);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto;
}

/* 6. 核心优势网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sakura-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: #fecdd3;
  box-shadow: var(--shadow-card-hover);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: #ffe4e6;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--sakura-pink);
}

.feature-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card-desc {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 7. 流媒体与 AI 支持专区 */
.unlock-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.unlock-box {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  box-shadow: var(--shadow-card);
}

.unlock-box-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.unlock-box-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.unlock-badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: #d1fae5;
  color: #065f46;
  font-weight: 700;
}

.unlock-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.unlock-tag {
  background: #f8fafc;
  border: 1px solid var(--border-subtle);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  color: var(--text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.unlock-tag svg {
  width: 16px;
  height: 16px;
  color: var(--sakura-pink);
}

.unlock-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.unlock-feat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.unlock-feat-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent-green);
  flex-shrink: 0;
}

/* 8. 套餐价格对比表 (Pricing) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-card);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: #fecdd3;
}

.pricing-card.featured {
  background: linear-gradient(180deg, #fff5f7 0%, #ffffff 35%);
  border: 2px solid var(--sakura-pink);
  box-shadow: var(--shadow-glow);
}

.ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--sakura-gradient);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 10px rgba(225, 29, 72, 0.35);
  white-space: nowrap;
}

.pricing-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.pricing-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  min-height: 38px;
  line-height: 1.5;
}

.pricing-price-box {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 18px;
  font-weight: 700;
  color: var(--sakura-pink);
}

.price-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.price-period {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.pricing-list-item svg {
  width: 16px;
  height: 16px;
  color: var(--accent-green);
  flex-shrink: 0;
}

/* 9. 用户评价 (Reviews) */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
}

.review-stars {
  display: flex;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 14px;
  font-size: 16px;
}

.review-content {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: normal;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-placeholder {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #ffe4e6;
  border: 1px solid #fecdd3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  color: var(--sakura-pink);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.author-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* 10. 常见问题 (FAQ - 原生纯 CSS 详情折叠) */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: #fecdd3;
  box-shadow: 0 4px 14px rgba(225, 29, 72, 0.08);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

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

.faq-question::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--sakura-pink);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

/* 11. 底部快速呼吁栏 (Bottom Callout) */
.cta-banner {
  margin: 40px auto 80px;
  padding: 50px 40px;
  background: linear-gradient(135deg, #fff1f2 0%, #faf5ff 100%);
  border: 1px solid #fecdd3;
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.cta-banner-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.cta-banner-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 30px;
}

/* 12. 页脚 (Footer) - 严格保留 4 个标题，并在新页面打开 */
.footer {
  margin-top: auto;
  background: #ffffff;
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0 30px;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.footer-link:hover {
  color: var(--sakura-pink);
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

/* 13. 单独子页面通用版式 (针对关于我们、条款、隐私、网站地图) */
.subpage-wrapper {
  padding: 60px 0 80px;
}

.subpage-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-card);
}

.subpage-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
  margin-bottom: 36px;
}

.subpage-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  background: var(--sakura-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.subpage-meta {
  font-size: 13.5px;
  color: var(--text-muted);
}

.subpage-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.subpage-content h2 {
  font-size: 22px;
  color: var(--text-primary);
  margin: 32px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--sakura-pink);
}

.subpage-content h3 {
  font-size: 18px;
  color: var(--text-primary);
  margin: 24px 0 10px;
}

.subpage-content p {
  margin-bottom: 16px;
}

.subpage-content ul {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 20px;
}

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

.highlight-box {
  background: #fff1f2;
  border-left: 4px solid var(--sakura-pink);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  color: var(--text-primary);
}

/* 14. 移动端与全端响应式适配 (@media) */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .metric-item:nth-child(2) {
    border-right: none;
  }
  .metric-item {
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 16px;
  }
  .metric-item:nth-child(3), .metric-item:nth-child(4) {
    border-bottom: none;
    padding-bottom: 0;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-wrapper {
    height: 64px;
  }
  
  .hero {
    padding: 50px 0 40px;
  }
  .hero-title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }
  .hero-subtitle {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
    min-height: 48px;
  }

  .hero-visual-box {
    margin: 0 auto 30px;
    padding: 5px;
    border-radius: var(--radius-lg);
  }
  .hero-visual-inner {
    border-radius: calc(var(--radius-lg) - 3px);
  }
  .hero-visual-badge {
    bottom: 12px;
    padding: 6px 14px;
    font-size: 12px;
    max-width: 92%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr;
    padding: 16px;
  }
  .metric-val {
    font-size: 22px;
  }

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

  .unlock-wrapper {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .pricing-card.featured {
    transform: none;
  }

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

  .cta-banner {
    padding: 36px 20px;
    margin: 20px auto 60px;
  }
  .cta-banner-title {
    font-size: 24px;
  }

  .footer-nav {
    gap: 20px;
  }
  .footer-link {
    font-size: 14px;
  }

  .subpage-card {
    padding: 24px 18px;
  }
  .subpage-title {
    font-size: 24px;
  }

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

/* 15. 高科技网格卡片 (High-Tech Grid Cards) & 文章阅读排版 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sakura-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: #fecdd3;
  box-shadow: var(--shadow-card-hover);
}

.article-card:hover::before {
  opacity: 1;
}

.article-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: #ffe4e6;
  color: #be123c;
  font-size: 12px;
  font-weight: 700;
  align-self: flex-start;
  margin-bottom: 14px;
}

.article-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-muted);
}

.article-card-link {
  color: var(--sakura-pink);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.article-card-link:hover {
  gap: 8px;
}

/* 单篇文章排版与内链样式 */
.article-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
}

.article-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.article-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13.5px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-body {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 22px;
  color: var(--text-primary);
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--sakura-pink);
  font-weight: 700;
}

.article-body h3 {
  font-size: 18px;
  color: var(--text-primary);
  margin: 26px 0 12px;
  font-weight: 700;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  margin-left: 22px;
  margin-bottom: 20px;
}

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

.article-body a.seo-link {
  color: var(--sakura-pink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s;
}

.article-body a.seo-link:hover {
  opacity: 0.8;
}

.article-footer-action {
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}