/* ============================================
   海洋蓝 · 极简欧式风格
   主背景: #f0f4f8   卡片: #ffffff
   主强调: #1a3a5c   次强调: #2d6a9f
   分割线: #dce6ed   阴影: rgba(26, 58, 92, 0.06)
   ============================================ */

body {
  margin: 0%;
  height: 100vh;
  background-color: #f0f4f8;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #1a1a2e;
}

/* ========== 弹窗 ========== */
.popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 200px;
  border: 1px solid #dce6ed;
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(26, 58, 92, 0.1);
  text-align: center;
}

/* ========== 卡片阴影（替代原 inset 阴影） ========== */
.yinying {
  border-radius: 6px;
  box-shadow: 0 2px 12px rgba(26, 58, 92, 0.06);
}

/* ========== 布局工具类 ========== */
.flex {
  display: flex;
}

.flex1 {
  flex: 1;
}

.column {
  flex-direction: column;
}

/* ========== 图片悬停放大 ========== */
.imgfangda {
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 4px;
}

.imgfangda:hover {
  transform: scale(1.06);
}

/* ========== 文字悬停效果 ========== */
.wenzifangda {
  cursor: pointer;
  transition: all 0.2s;
}

.wenzifangda2 {
  cursor: pointer;
  transition: all 0.15s;
}

.wenzifangda:hover {
  color: #2d6a9f;
}

.wenzifangda2:hover {
  color: #2d6a9f;
}

/* ========== 文本展开/收起 ========== */
.text {
  display: -webkit-box;
  -webkit-line-clamp: 5;
  line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.text::before {
  content: "";
  float: right;
  height: calc(100% - 1.5em);
}

.btn {
  float: right;
  clear: both;
  border-radius: 6px;
  color: #2d6a9f;
}

.btn::before {
  content: "展开";
}

.exp {
  display: none;
}

.exp:checked + .text {
  -webkit-line-clamp: 999;
  line-clamp: 999;
  max-height: none;
}

.exp:checked + .text .btn::before {
  content: "收起";
}

/* ========== 渐变背景 ========== */

/* 主渐变 —— 纯净白到极浅蓝（替代原紫白渐变） */
.jianbian0 {
  background-image: linear-gradient(135deg, #ffffff 0%, #e8f0f8 100%);
}

/* 统一海洋蓝渐变（原各种彩色渐变全部统一） */
.jianbian1,
.jianbian2,
.jianbian3,
.jianbian4,
.jianbian5 {
  background-image: linear-gradient(135deg, #ffffff 0%, #e8f0f8 100%);
}

/* ========== 间距工具类 ========== */
.mg8 {
  margin: 8px;
}

.mgr8 {
  margin-right: 8px;
}

.mgt8 {
  margin-top: 8px;
}

.mgb8 {
  margin-bottom: 8px;
}

/* ========== 导航栏 ========== */
.daohan {
  padding: 14px 20px;
  border-bottom: 1px solid #dce6ed;
  text-align: left;
  transition: background 0.2s;
}

.daohan:hover {
  background-color: #e8f0f8;
}

/* ========== 链接样式 ========== */
.quxiahuaxian {
  text-decoration: none;
}

a {
  color: #1a3a5c;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #2d6a9f;
  text-decoration: underline;
}

.quxiahuaxian:hover {
  text-decoration: underline;
}

/* ========== 现代化极简按钮 ========== */
.btn-primary {
  display: inline-block;
  background: #1a3a5c;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 12px 40px;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 2px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(26, 58, 92, 0.15);
  transition: all 0.25s;
  width: 100%;
}

.btn-primary:hover {
  background: #2d6a9f;
  box-shadow: 0 4px 16px rgba(26, 58, 92, 0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(26, 58, 92, 0.15);
}

/* 次要按钮 —— 描边风格 */
.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #1a3a5c;
  border: 1.5px solid #1a3a5c;
  border-radius: 6px;
  padding: 8px 24px;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-secondary:hover {
  background: #1a3a5c;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(26, 58, 92, 0.15);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* ========== 文字缩进 ========== */
.wenzi {
  text-indent: 2em;
}