/* ============ 变量与重置 ============ */
:root {
  --c-primary: #b01c2e;        /* 中国红 */
  --c-primary-d: #8a1422;
  --c-primary-l: #f6e7e9;
  --c-dark: #16314f;           /* 藏青 */
  --c-dark-2: #1f4a7a;
  --c-gold: #c8a45c;           /* 琥珀金 */
  --c-text: #2b2b2b;
  --c-text-2: #666;
  --c-text-3: #999;
  --c-border: #e6e6e6;
  --c-bg: #f5f6f8;
  --c-bg-2: #fff;
  --radius: 4px;
  --container: 1200px;
  --shadow: 0 2px 14px rgba(0, 0, 0, .06);
  --shadow-hover: 0 6px 22px rgba(0, 0, 0, .10);
  --font-sans: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "STZhongsong", "STSong", "SimSun", "FangSong", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: var(--c-primary); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; outline: none; }
h1, h2, h3, h4 { font-weight: 600; line-height: 1.4; }

/* ============ 通用容器与工具类 ============ */
.container { max-width: var(--container); margin: 0 auto; padding: 0 16px; }
.text-center { text-align: center; }
.text-ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.muted { color: var(--c-text-2); }
.muted-3 { color: var(--c-text-3); }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.hidden { display: none !important; }
/* 仅屏幕阅读器/搜索引擎可见 */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ============ 按钮 ============ */
.btn {
  display: inline-block; cursor: pointer; border: 1px solid transparent;
  padding: 9px 22px; border-radius: var(--radius); line-height: 1.2;
  background: #fff; color: var(--c-text); border-color: var(--c-border);
  transition: all .2s; text-align: center;
}
.btn:hover { color: var(--c-primary); border-color: var(--c-primary); }
.btn-primary { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-d); border-color: var(--c-primary-d); color: #fff; }
.btn-dark { background: var(--c-dark); border-color: var(--c-dark); color: #fff; }
.btn-dark:hover { background: #0f2440; color: #fff; }
.btn-lg { padding: 12px 30px; font-size: 15px; }
.btn-block { display: block; width: 100%; }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* ============ 徽标 ============ */
.badge { display: inline-block; padding: 1px 9px; border-radius: 20px; font-size: 12px; line-height: 1.8; }
.badge-success { background: #e8f7ee; color: #2e9e5b; }
.badge-primary { background: #e7f0fa; color: var(--c-dark-2); }
.badge-warning { background: #fdf3e3; color: #c8870c; }
.badge-danger { background: #fbe9eb; color: var(--c-primary); }
.badge-info { background: #eef0f2; color: var(--c-text-2); }

/* ============ 区块标题 ============ */
.section { padding: 36px 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.section-title { position: relative; padding-left: 14px; font-size: 22px; color: var(--c-dark); }
.section-title::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 5px; height: 20px; background: var(--c-primary); border-radius: 2px; }
.section-title small { display: block; font-size: 12px; color: var(--c-text-3); font-weight: normal; letter-spacing: 1px; text-transform: uppercase; margin-top: 2px; }
.more { color: var(--c-text-3); font-size: 13px; }
.more:hover { color: var(--c-primary); }

/* ============ 卡片 ============ */
.card { background: var(--c-bg-2); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: box-shadow .2s, transform .2s; }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }

/* ============ 面包屑 ============ */
.breadcrumb { background: #fff; border-bottom: 1px solid var(--c-border); }
.breadcrumb .container { display: flex; align-items: center; height: 46px; font-size: 13px; color: var(--c-text-3); }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb span { margin: 0 6px; color: #ccc; }

/* ============ 分页 ============ */
.pagination { display: flex; justify-content: center; align-items: center; gap: 6px; margin: 28px 0 8px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 36px; height: 36px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; cursor: pointer; color: var(--c-text-2);
}
.pagination a:hover { color: var(--c-primary); border-color: var(--c-primary); }
.pagination .active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; cursor: default; }
.pagination .disabled { color: #ccc; cursor: not-allowed; background: #f7f7f7; }

/* ============ 表单 ============ */
.form-row { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; color: var(--c-text-2); }
.form-label .req { color: var(--c-primary); }
.form-control { width: 100%; padding: 10px 12px; border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; transition: border-color .2s; }
.form-control:focus { border-color: var(--c-dark-2); }

/* ============ 空状态 / 加载 ============ */
.empty-state, .loading-state { text-align: center; color: var(--c-text-3); padding: 60px 0; }
.loading-state::before { content: ""; display: inline-block; width: 18px; height: 18px; margin-right: 8px; border: 2px solid var(--c-border); border-top-color: var(--c-primary); border-radius: 50%; vertical-align: -3px; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ 页面主区 ============ */
.main { min-height: 40vh; }
.page-wrap { background: #fff; border-top: 3px solid var(--c-primary); }
.content-box { background: #fff; padding: 28px; box-shadow: var(--shadow); border-radius: var(--radius); }