/* ===============================
   行 · Doing 页面专用样式 (xing.css)
   =============================== */

/* --------------------------------
   0) 页面全局（布局已移至全局样式）
--------------------------------- */
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

/* 确保navbar在xing页面也能正常浮动 */
.navbar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 1000 !important;
  background-color: rgba(0, 0, 0, 0.9) !important; /* 确保有背景色 */
}

/* 确保hero section不会覆盖navbar */
.xing-hero-fullwidth {
  z-index: 1;
  margin-top: var(--nav-h, 80px); /* 为navbar留出空间 */
}

/* 确保页面内容不被navbar遮挡 */
.page-wrap {
  padding-top: var(--nav-h, 80px) !important;
}

/* 页面内容容器，保持全局1400px限制 */
.xing-content {
  max-width: 1400px;
  width: 100%;
  box-sizing: border-box;
}

/* 响应式设计：在小屏幕上调整边距 */
@media (max-width: 768px) {
  .xing-content {
    width: 90%; /* 移动设备上减少边距到5% */
  }
}

@media (max-width: 480px) {
  .xing-content {
    width: 95%; /* 小屏幕设备上进一步减少边距 */
    padding: 0 12px;
  }
}

/* --------------------------------
   1) HERO - 图片展示（全宽section）
--------------------------------- */


/* 全宽hero section，突破main.page-wrap的1400px限制 */
.xing-hero-fullwidth {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  margin-top: 0; /* 移除负边距，避免覆盖navbar */
  /* 确保突破父容器的宽度限制 */
  max-width: none;
  overflow-x: hidden;
}

.xing-hero-container {
  width: 100%;
  height: var(--hero-h);
  min-height: var(--hero-min-height);
  position: relative;
  background: transparent;
}

.xing-hero {
  position: relative;
  width: 100%;
  background: transparent;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 12px 20px 20px 20px; /* 顶部12px，左右20px，底部20px */
}

.hero-images {
  display: flex;
  gap: 12px;
  width: 100%;
  justify-content: center;
  align-items: stretch;
  flex: 1;
  max-width: none;
  box-sizing: border-box;
}

/* Hero图片样式 - 按比例设置宽度 */
.hero-pic-1 {
  flex: 2;
  position: relative;
  overflow: hidden;
}

.hero-pic-2 {
  flex: 3;
  position: relative;
  overflow: hidden;
}

.hero-pic-3 {
  flex: 5;
  position: relative;
  overflow: hidden;
}

.hero-pic-4 {
  flex: 2;
  position: relative;
  overflow: hidden;
}

.hero-pic-1 img,
.hero-pic-2 img,
.hero-pic-3 img,
.hero-pic-4 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: #fff;
  padding: 30px 20px 20px 20px;
}

.hero-caption h2 {
  margin: 0 0 8px 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
}

.hero-caption p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  opacity: 0.9;
}

/* Hero Intro 部分 */
.hero-intro {
  padding: 36px 0;
  background: transparent;
  flex-shrink: 0;
}

.hero-intro .wrap {
  width: 100%;
  margin: 0;
  text-align: left;
  padding: 0 12px; /* 保持与图片相同的左右间距 */
  box-sizing: border-box;
}

.hero-intro h1 {
  margin: 0 0 12px 0;
  font-size: 32px;
  font-weight: 600;
  color: #333;
}

.hero-intro p {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: #666;
}

/* 响应式设计 */
@media (max-width: 1400px) {
  .hero-images {
    gap: 10px;
  }
  
  .hero-intro h1 {
    font-size: 28px; /* 中等屏幕减小标题字号 */
  }
  
  .hero-intro p {
    font-size: 14px; /* 中等屏幕减小描述字号 */
  }
}

@media (max-width: 1024px) {
  .hero-images {
    gap: 8px;
    padding: 0 12px; /* 保持左右12px间距 */
  }
  
  .hero-intro h1 {
    font-size: 24px; /* 平板屏幕进一步减小标题字号 */
  }
  
  .hero-intro p {
    font-size: 13px; /* 平板屏幕进一步减小描述字号 */
  }
  
  .hero-intro {
    padding: 24px 0; /* 平板屏幕减小padding */
  }
}

/* iPad横屏模式特殊处理 */
@media (max-width: 1024px) and (min-height: 768px) {
  .xing-hero-container {
    min-height: 500px; /* iPad横屏时确保最小500px高度 */
  }
}

@media (max-width: 768px) {
  .xing-hero-container {
    height: auto; /* 移动端取消固定高度 */
    min-height: calc(100vh - var(--nav-height));
  }
  
  .xing-hero {
    padding: 12px 15px 15px 15px; /* 顶部12px，左右15px，底部15px */
    height: auto; /* 移动端取消固定高度 */
  }
  
  .hero-images {
    flex-direction: column; /* 改为垂直排列 */
    gap: 12px; /* 垂直间距 */
    width: 100%;
    flex: none; /* 移动端取消flex: 1 */
    padding: 0 12px; /* 保持左右12px间距 */
  }
  
  /* 垂直排列，宽度全宽，高度按2:3:5:2比例 */
  .hero-pic-1 {
    flex: none;
    width: 100%;
    height: 180px; /* 基础高度单位 × 2 × 1.5 */
  }
  
  .hero-pic-2 {
    flex: none;
    width: 100%;
    height: 270px; /* 基础高度单位 × 3 × 1.5 */
  }
  
  .hero-pic-3 {
    flex: none;
    width: 100%;
    height: 450px; /* 基础高度单位 × 5 × 1.5 */
  }
  
  .hero-pic-4 {
    flex: none;
    width: 100%;
    height: 180px; /* 基础高度单位 × 2 × 1.5 */
  }
  
  .hero-intro {
    padding: 20px 0; /* 移动端减小padding */
  }
}

/* --------------------------------
   2) 行动库标题
--------------------------------- */
.xing-title {
  margin: 32px auto 12px;
  text-align: center;
}

.xing-title__description {
  margin: 36px 0 16px 0;
  font-size: 16px;
  line-height: 1.6;
  color: #666;
}

.xing-title h2 {
  margin: 0;
  font-size: 40px;
  line-height: 1.2;
}

/* 标题响应式设计 */
@media (max-width: 1200px) {
  .xing-title h2 {
    font-size: 36px; /* 中等屏幕减小标题字号 */
  }
  
  .xing-title__description {
    font-size: 15px; /* 中等屏幕减小描述字号 */
  }
}

@media (max-width: 1024px) {
  .xing-title h2 {
    font-size: 32px; /* 平板屏幕进一步减小标题字号 */
  }
  
  .xing-title__description {
    font-size: 14px; /* 平板屏幕进一步减小描述字号 */
  }
}

@media (max-width: 768px) {
  .xing-title h2 {
    font-size: 28px; /* 移动端标题字号 */
  }
  
  .xing-title__description {
    font-size: 13px; /* 移动端描述字号 */
  }
}

/* --------------------------------
   4) 搜索框和分类标签（同一行布局）
--------------------------------- */
.xing-controls {
  margin: 20px auto;
  max-width: 100%;
}

.xing-controls__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 0 16px;
}

/* 分类标签（左侧） */
.xing-filter {
  flex: 1;
}

.xing-filter__list {
  list-style: none;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}

.xing-filter__btn {
  appearance: none;
  font: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
  color: #000;
  padding: 8px 0;
  white-space: nowrap;
  position: relative;
  transition: all 0.2s ease;
}

.xing-filter__btn:hover { 
  opacity: 0.7; 
}

.xing-filter__btn.is-active { 
  color: #000; 
}

.xing-filter__btn.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: #000;
  border-radius: 1px;
}

/* 搜索框（右侧） */
.xing-searchbar {
  flex-shrink: 0;
  position: relative;
}

.xing-searchbar input[type="search"] {
  appearance: none;
  border: none;
  border-bottom: 1px solid #000;
  background: transparent;
  color: #000;
  padding: 8px 0;
  font: inherit;
  width: 240px;
  text-align: left;
  outline: none;
  transition: border-color 0.2s ease;
}

.xing-searchbar input[type="search"]:focus {
  border-bottom-color: #000;
}

.xing-searchbar input[type="search"]::placeholder {
  color: #999;
}

/* 控制栏响应式设计 */
@media (max-width: 900px) {
  .xing-controls__container {
    gap: 16px;
    padding: 0 12px;
  }
  
  .xing-searchbar input[type="search"] {
    width: 200px; /* 中等屏幕减小搜索框宽度 */
  }
  
  .xing-filter__btn {
    padding: 6px 0; /* 中等屏幕减小按钮padding */
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .xing-controls__container {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }
  
  .xing-filter {
    order: 2;
  }
  
  .xing-searchbar {
    order: 1;
    align-self: center;
  }
  
  .xing-filter__list {
    justify-content: center;
  }
  
  .xing-searchbar input[type="search"] {
    width: 100%;
    max-width: 300px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .xing-hero {
    padding: 8px 10px 12px 10px; /* 进一步减少内边距 */
  }
  
  .hero-images {
    gap: 8px; /* 减少垂直间距 */
    padding: 0 8px; /* 减少左右间距 */
  }
  
  /* 超小屏幕下保持垂直排列和2:3:5:2比例，但减小高度 */
  .hero-pic-1 {
    flex: none;
    width: 100%;
    height: 120px; /* 基础高度单位 × 2 × 1.5，超小屏幕 */
  }
  
  .hero-pic-2 {
    flex: none;
    width: 100%;
    height: 180px; /* 基础高度单位 × 3 × 1.5 */
  }
  
  .hero-pic-3 {
    flex: none;
    width: 100%;
    height: 300px; /* 基础高度单位 × 5 × 1.5 */
  }
  
  .hero-pic-4 {
    flex: none;
    width: 100%;
    height: 120px; /* 基础高度单位 × 2 × 1.5 */
  }
  
  .hero-intro {
    padding: 16px 0; /* 进一步减小padding */
  }
  
  .hero-intro h1 {
    font-size: 20px; /* 超小屏幕进一步减小标题字号 */
  }
  
  .hero-intro p {
    font-size: 12px; /* 超小屏幕进一步减小描述字号 */
  }
}

/* --------------------------------
   6) 卡片网格
--------------------------------- */
.xing-card-grid {
  list-style: none;
  margin: 20px 0;
  padding: 0 16px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 1200px) { 
  .xing-card-grid { 
    grid-template-columns: repeat(3, minmax(0, 1fr)); 
    gap: 16px;
  } 
}
@media (max-width: 840px) { 
  .xing-card-grid { 
    grid-template-columns: repeat(2, minmax(0, 1fr)); 
    gap: 16px;
  } 
}
@media (max-width: 520px) { 
  .xing-card-grid { 
    grid-template-columns: repeat(2, minmax(0, 1fr)); /* 保持两列布局 */
    padding: 0 8px; /* 减少左右间距 */
    gap: 8px; /* 减少卡片间距 */
  } 
  
  /* 小屏幕卡片内容优化 */
  .xing-card {
    min-height: 320px; /* 减少最小高度 */
  }
  
  .xing-card__title {
    font-size: 16px; /* 减小标题字号 */
    margin-bottom: 24px; /* 减少底部间距 */
  }
  
  .xing-card__summary {
    font-size: 12px; /* 减小简介字号 */
    -webkit-line-clamp: 2; /* 减少显示行数 */
  }
  
  .xing-card__date {
    font-size: 11px; /* 减小日期字号 */
    margin-bottom: 16px; /* 减少底部间距 */
  }
  
  .xing-card__category {
    font-size: 12px; /* 减小分类标签字号 */
  }
  
  .xing-card__tag {
    font-size: 12px; /* 减小标签字号 */
  }
}

/* ==========================================
   7) 卡片视觉 - xing-2.0 新布局
   ========================================== */

.xing-card{
  border: none;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  transition: transform .18s ease;
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 400px;
  width: 100%;
  max-width: 100%;
}

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

.xing-card__link {
  display: flex;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

/* —— 顶部：日期 + 标题 —— */
.xing-card__header {
  padding: 16px 0 8px 0;
}

.xing-card__date {
  font-size: 12px;
  color: #999;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.xing-card__date-year {
  color: #999;
  font-weight: 500;
}

.xing-card__date-separator {
  flex: 1;
  height: 1px;
  background-color: #ccc;
  margin: 0 8px;
  align-self: center;
}

.xing-card__date-month {
  color: #999;
}

.xing-card__date-day-separator {
  width: 12px;
  height: 1px;
  background-color: #ccc;
  margin: 0 4px;
  align-self: center;
}

.xing-card__date-day {
  color: #999;
}

.xing-card__title {
  margin: 0 0 36px 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: #000;
  
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

/* —— 分类标签 —— */
.xing-card__categories {
  padding: 4px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.xing-card__category {
  display: inline-block;
  background: transparent;
  color: #666;
  padding: 2px 0;
  font-size: 13px;
  line-height: 1.2;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* —— 封面图片 —— */
.xing-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin: 0;
}

.xing-card__media > img.xing-card__cover {
  position: absolute;
  inset: 0;
  width: 100%; 
  height: 100%;
  object-fit: cover;
  display: block;
}

/* —— 底部：标签 + 简介 —— */
.xing-card__footer {
  padding: 3px 0 48px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

/* 标签样式 */
.xing-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.xing-card__tag {
  display: inline-block;
  background: transparent;
  color: #666;
  padding: 2px 0;
  font-size: 13px;
  line-height: 1.2;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* 简介样式 */
.xing-card__summary {
  font-size: 13px;
  line-height: 1.5;
  color: #666;
  margin: 0;
  
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --------------------------------
   8) 底部浮动条
--------------------------------- */
.bottom-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; justify-content: center; align-items: center;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(1.05) blur(2px);
  border-top: 1px solid #e5e5e5;
  padding: 8px 12px;
  font-size: 14px;
}

/* --------------------------------
   9) 回到顶部按钮
--------------------------------- */
.back-top {
  position: fixed;
  right: 20px; bottom: 70px; z-index: 30;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid #000;
  background: #000; color: #fff;
  cursor: pointer;
  display: grid; place-items: center;
  font-size: 18px;
}
.back-top:hover { opacity: .9; }