:root {
  --primary: #ff7597;          /* 主亮粉色 */
  --primary-hover: #ff4d79;    /* 悬停深粉色 */
  --primary-light: #ffe6eb;    /* 极浅背景粉 */
  --bg-color: #fffafb;         /* 整体背景略带粉的白 */
  --text-main: #4a4a4a;        /* 柔和深灰文字 */
  --text-muted: #888888;
  --white: #ffffff;
  --border-radius: 12px;       /* 整体圆角萌化 */
  --shadow: 0 6px 16px rgba(255, 117, 151, 0.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: var(--text-main);
  transition: color 0.3s;
}

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

/* ================= Header 导航部分 ================= */
.header {
  background: linear-gradient(135deg, #ff94b3 0%, #ff7597 100%);
  box-shadow: 0 4px 12px rgba(255, 117, 151, 0.2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 1px;
}

.logo:hover {
  color: var(--primary-light);
}

.nav-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--white);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
  background: rgba(255, 255, 255, 0.25);
  color: var(--white);
}

.nav-links a.tag-link {
  background: var(--white);
  color: var(--primary);
}

/* ================= Main 主体部分 ================= */
.main-container, .article-wrap {
  max-width: 1200px;
  margin: 30px auto;
  padding: 0 20px;
}

/* 广告位优化 */
.ad-banner img, .ad-banner-center img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 25px;
}
.ad-banner-center {
  display: block;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 20px;
}

/* 首页 - 标题区 */
.section-header {
  border-bottom: 2px solid var(--primary-light);
  margin-bottom: 20px;
  padding-bottom: 10px;
}
.section-title {
  font-size: 20px;
  color: var(--primary-hover);
  margin: 0;
}

/* 首页 - 图片网格卡片 */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

.card {
  background: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 24px rgba(255, 117, 151, 0.2);
}

.img-wrap {
  display: block;
  width: 100%;
  aspect-ratio: 3/4; /* 适合写真竖图比例 */
  overflow: hidden;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.card-info {
  padding: 15px;
}

.card-info h3 {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

.card-meta .badge {
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 12px;
}

/* 首页 - SEO文本矩阵 */
.seo-text-matrix {
  background: var(--white);
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 40px;
}

.seo-matrix-title {
  font-size: 18px;
  color: var(--primary);
  margin-top: 0;
  border-bottom: 2px dashed var(--primary-light);
  padding-bottom: 12px;
  margin-bottom: 15px;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.matrix-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.matrix-grid li {
  margin-bottom: 10px;
  font-size: 14px;
}

.matrix-grid li a {
  display: flex;
  align-items: center;
}
.matrix-grid li a::before {
  content: '🌸';
  font-size: 12px;
  margin-right: 8px;
  opacity: 0.7;
}

/* ================= 详情/内页部分 ================= */
.article-title {
  text-align: center;
  font-size: 24px;
  color: var(--primary-hover);
  margin-bottom: 15px;
}

.article-meta {
  text-align: center;
  margin-bottom: 25px;
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
}
.meta-item a { color: var(--primary); font-weight: bold; }
.meta-item strong { color: var(--primary-hover); }

/* 图片浏览器 */
.img-viewer {
  text-align: center;
  margin: 0 auto;
  max-width: 900px;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
  padding: 10px;
}

.img-viewer img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}

.img-tip {
  text-align: center;
  color: var(--primary);
  font-size: 14px;
  margin-top: 15px;
  background: var(--primary-light);
  display: inline-block;
  padding: 5px 15px;
  border-radius: 20px;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
}

/* 翻页按钮 */
.page-controls {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 35px 0;
}

.btn-page {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 10px 30px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.3s ease;
}

.btn-page:hover, .btn-page.next {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(255, 117, 151, 0.4);
}

.btn-page.next:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

/* SEO 文章展开区域 */
.seo-box {
  background: var(--white);
  padding: 25px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 40px;
  position: relative;
  border-top: 4px solid var(--primary-light);
}

.seo-box-title {
  margin-top: 0;
  color: var(--primary);
  font-size: 18px;
  border-bottom: 2px dashed var(--primary-light);
  padding-bottom: 10px;
}

.inline-recommend { margin-bottom: 15px; font-weight: bold; }

.seo-content-wrap {
  position: relative;
  max-height: 150px; /* 初始收起高度 */
  overflow: hidden;
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  transition: max-height 0.8s ease;
}

.seo-content-wrap.is-open {
  max-height: 5000px; /* 展开后的极限高度 */
}

.seo-mask {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), #ffffff);
}

.seo-btn-wrap {
  text-align: center;
  margin-top: 15px;
}

.seo-btn {
  display: inline-block;
  cursor: pointer;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: bold;
  transition: background 0.3s;
}
.seo-btn:hover {
  background: #ffd6e0;
}

/* 相关资源推荐 */
.text-recommend {
  background: var(--white);
  padding: 25px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}
.text-recommend h3 {
  margin-top: 0;
  color: var(--primary-hover);
  border-left: 4px solid var(--primary);
  padding-left: 10px;
}
.text-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 15px;
}
.text-grid a {
  background: var(--bg-color);
  padding: 10px 15px;
  border-radius: 8px;
  font-size: 14px;
}
.text-grid a:hover {
  background: var(--primary-light);
  color: var(--primary-hover);
}

/* ================= Footer 底部 ================= */
.footer {
  background: var(--white);
  border-top: 2px solid var(--primary-light);
  padding: 40px 20px 20px;
  margin-top: 40px;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: var(--primary);
  font-size: 16px;
  margin-bottom: 15px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-muted); font-size: 14px; }
.footer-links a:hover { color: var(--primary); }

.footer-bottom, .footer-center {
  text-align: center;
  font-size: 14px;
  color: #aaa;
  border-top: 1px solid #f0f0f0;
  padding-top: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links-inline { margin-bottom: 10px; }
.footer-links-inline a { margin: 0 10px; color: var(--text-muted); }
.footer-links-inline a:hover { color: var(--primary); }

/* 移动端自适应小修补 */
@media (max-width: 768px) {
  .nav-container { flex-direction: column; gap: 15px; }
  .grid-cards { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 15px; }
  .page-controls { flex-direction: column; padding: 0 20px; }
  .btn-page { text-align: center; }
}