:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1f2329;
  --text-2: #646a73;
  --text-3: #8f959e;
  --line: #e6e8eb;
  --brand: #3b6cff;
  --brand-soft: #eaf0ff;
  --domestic: #2f7d4f;
  --domestic-soft: #e6f4ec;
  --abroad: #d9730d;
  --abroad-soft: #fdf0e1;
  --danger: #d93636;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
  --maxw: 1440px;
  font-size: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }

/* ---------- Header ---------- */
.app-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 10px 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px;
  object-fit: cover; flex: none;
}
.brand-text h1 { font-size: 17px; margin: 0; line-height: 1.2; }
.brand-text p { font-size: 12px; margin: 0; color: var(--text-3); }

.tabs { display: flex; gap: 6px; }
.tab {
  padding: 7px 14px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--text-2); background: var(--bg); transition: .15s;
}
.tab.active { background: var(--brand); color: #fff; }
.tab .cnt {
  font-size: 12px; opacity: .8; margin-left: 2px;
}

.search-wrap { flex: 1 1 240px; max-width: 380px; min-width: 120px; position: relative; }
#search {
  width: 100%; padding: 6px 28px 6px 12px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--bg); outline: none;
  font-size: 13px;
}
#search::placeholder { color: #aaa; }
#search:focus { border-color: var(--brand); background: #fff; }
/* 隐藏 Chrome/Safari 原生取消按钮，避免与自定义 ✕ 重复 */
#search::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-clear {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; line-height: 16px; padding: 0;
  border: none; border-radius: 50%; cursor: pointer;
  background: #d7dae3; color: #666; font-size: 11px; text-align: center;
}
.search-clear:hover { background: #c3c7d4; color: #333; }

/* ---------- Layout ---------- */
.layout {
  max-width: var(--maxw); margin: 0 auto; padding: 16px;
  display: grid; grid-template-columns: 1fr; gap: 16px;
  align-items: start;
}

/* ---------- Filters ---------- */
.filters {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow);
  /* 桌面端限宽并居中，与下方卡片列宽度一致 */
  max-width: 760px; margin: 0 auto;
}
.filters-head {
  display: none; align-items: center; justify-content: space-between;
  font-weight: 700; margin-bottom: 8px;
}
.filters-close { font-size: 24px; line-height: 1; color: var(--text-3); }
.filter-group { margin-bottom: 0; flex: 0 0 auto; min-width: 132px; }
.filter-group label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.filter-group select {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; outline: none;
}
.filter-group select:focus { border-color: var(--brand); }
.filters-reset {
  flex: 0 0 auto; margin-left: auto; padding: 9px 16px; border-radius: 8px; background: var(--bg);
  color: var(--text-2); font-size: 14px; font-weight: 600;
}
.filters-reset:hover { background: var(--brand-soft); color: var(--brand); }
.filters-mask { display: none; }

/* ---------- Content / Toolbar ---------- */
.content { min-width: 0; max-width: 760px; margin: 0 auto; }
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px; gap: 10px;
}
.filter-toggle {
  display: none; padding: 8px 14px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--line); font-weight: 600;
}
.result-count { font-size: 13px; color: var(--text-3); }

/* ---------- Cards ---------- */
.cards {
  display: grid; gap: 14px;
  /* 单列：每行一个征文信息，整体居中，限制卡片宽度便于阅读 */
  grid-template-columns: 1fr;
  max-width: 760px; margin: 0 auto;
}
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow);
  cursor: pointer; transition: .15s; display: flex; flex-direction: column; gap: 10px;
}
.card:hover { transform: translateY(-2px); border-color: #c9d4ff; }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.card-title { font-size: 15px; font-weight: 700; line-height: 1.45; margin: 0;
  /* 限制标题高度，避免长短不一的标题让卡片高度差太多 */
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-badges { display: flex; gap: 6px; flex-wrap: wrap; flex: none; }
.badge {
  font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px;
  white-space: nowrap;
}
.badge-dom { background: var(--domestic-soft); color: var(--domestic); }
.badge-abr { background: var(--abroad-soft); color: var(--abroad); }
.badge-type { background: var(--brand-soft); color: var(--brand); }
.card-meta { font-size: 13px; color: var(--text-2); display: flex; flex-direction: column; gap: 3px; }
.card-meta .row { display: flex; gap: 6px; }
.card-meta .k { color: var(--text-3); flex: none; }
.card-deadline {
  margin-top: auto; display: flex; align-items: center; justify-content: space-between;
  padding-top: 10px; border-top: 1px dashed var(--line); font-size: 13px;
}
.dl-date { font-weight: 700; }
.dl-left { font-size: 12px; padding: 2px 8px; border-radius: 999px; }
.dl-left.soon { background: #fdeaea; color: var(--danger); }
.dl-left.ok { background: var(--brand-soft); color: var(--brand); }
.dl-left.over { background: #f0f0f0; color: var(--text-3); }

/* ---------- 关于本站 ---------- */
.about-page {
  /* 桌面端横跨侧栏+内容两列，避免卡片被挤成左侧细栏 */
  grid-column: 1 / -1;
  display: flex; justify-content: center;
  padding: 40px 0 60px;
}
.about-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 32px; max-width: 520px; width: 100%;
}
.about-card h2 { font-size: 22px; margin: 0 0 16px; }
.about-card p { font-size: 15px; color: var(--text-2); line-height: 1.7; margin: 0 0 20px; }
.about-info {
  background: var(--bg); border-radius: 10px; padding: 16px 20px; margin-bottom: 16px;
}
.about-row {
  display: flex; gap: 10px; font-size: 15px; padding: 6px 0;
  align-items: center;
}
.about-row + .about-row { border-top: 1px solid var(--line); }
.about-label { color: var(--text-3); flex: none; width: 60px; font-weight: 600; }
.about-row a { color: var(--brand); text-decoration: none; }
.about-row a:hover { text-decoration: underline; }
.about-tip { font-size: 13px; color: var(--text-3); margin: 0; }
.about-qr {
  display: flex; gap: 20px; align-items: center;
  background: var(--bg); border-radius: 10px;
  padding: 18px; margin-top: 20px;
}
.about-qr-img { width: 120px; height: 120px; border-radius: 8px; object-fit: cover; flex: none; background: #fff; }
.about-qr-text { flex: 1; min-width: 0; }
.about-qr-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; color: var(--text); }
.about-qr-name { font-size: 14px; color: var(--brand); margin-bottom: 8px; font-weight: 600; }
.about-qr-text p { font-size: 13px; color: var(--text-3); margin: 0; line-height: 1.6; }
@media (max-width: 480px) {
  .about-qr { flex-direction: column; text-align: center; }
  .about-qr-img { width: 140px; height: 140px; }
}

/* ---------- Empty / Footer ---------- */
.empty { text-align: center; color: var(--text-3); padding: 60px 0; }
.app-footer {
  border-top: 1px solid var(--border, #e6e8ee);
  text-align: center;
  color: var(--text-3); font-size: 12px;
  margin-top: 32px; padding: 20px 16px 40px;
  background: #fafbfd;
}
.app-footer p { margin: 0; }

/* ---------- 浮动小程序码 ---------- */
.qr-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 70;
  background: #fff; border-radius: 14px;
  padding: 12px 12px 10px;
  box-shadow: 0 4px 24px rgba(0,0,0,.14), 0 1px 4px rgba(0,0,0,.08);
  text-align: center;
  transition: opacity .25s, transform .25s;
}
.qr-float.hide { opacity: 0; transform: translateY(12px); pointer-events: none; }
.qr-float-close {
  position: absolute; top: -10px; right: -10px;
  width: 28px; height: 28px;
  border: 2px solid #fff; border-radius: 50%;
  background: #5b6378; color: #fff;
  font-size: 16px; line-height: 1; cursor: pointer;
  display: grid; place-items: center;
  box-shadow: 0 2px 6px rgba(0,0,0,.2);
  transition: background .15s;
}
.qr-float-close:hover { background: #3b6cff; }
.qr-float-img {
  width: 108px; height: 108px; display: block; border-radius: 6px;
}
.qr-float-tip {
  margin: 8px 0 0; font-size: 12px; color: var(--text-2, #555);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .qr-float { right: 12px; bottom: 12px; padding: 10px 10px 8px; }
  .qr-float-img { width: 92px; height: 92px; }
}

/* ---------- Modal ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,.45);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 16px; overflow-y: auto;
}
/* hidden 属性必须能覆盖上面的 display:flex，否则遮罩会常驻且无法关闭 */
.modal-mask[hidden] { display: none; }
.modal {
  background: var(--surface); border-radius: 16px; max-width: 720px; width: 100%;
  position: relative; box-shadow: 0 10px 40px rgba(0,0,0,.2); overflow: hidden;
}
.modal-close {
  position: absolute; top: 12px; right: 14px; font-size: 26px; line-height: 1;
  color: var(--text-3); z-index: 2;
}
.modal-body { padding: 24px; max-height: 80vh; overflow-y: auto; }
.modal-body h2 { font-size: 20px; margin: 0 0 6px; line-height: 1.4; }
.modal-body .m-sub { color: var(--text-2); font-size: 14px; margin-bottom: 16px; }
.modal-body .m-badges { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.modal-body .m-info { background: var(--bg); border-radius: 10px; padding: 14px; margin-bottom: 16px; }
.modal-body .m-info .row { display: flex; gap: 8px; font-size: 14px; padding: 4px 0; }
.modal-body .m-info .k { color: var(--text-3); flex: none; width: 84px; }
.modal-body .m-desc { font-size: 15px; color: var(--text); }
.modal-body .m-desc h3 { font-size: 16px; margin: 18px 0 8px; }
.modal-body .m-desc p { margin: 8px 0; }
.modal-body .m-desc ul { margin: 8px 0; padding-left: 20px; }
.modal-body .m-desc li { margin: 4px 0; }
.modal-body .m-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.btn {
  padding: 10px 16px; border-radius: 10px; font-weight: 600; font-size: 14px;
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:active { background: #2f5be0; }
.btn-ghost { background: var(--bg); color: var(--text); border: 1px solid var(--line); }
.btn-receipt { background: #fff7e6; color: #b76e00; border: 1px solid #ffe2a8; }
.m-eng { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.m-eng summary { cursor: pointer; font-weight: 600; color: var(--brand); }

/* ---------- Responsive ---------- */
/* 平板 / 窄屏（<1024）：侧栏收为抽屉，卡片 2 列 */
@media (max-width: 1023px) {
  .layout { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .filter-toggle { display: inline-block; }
  .filters {
    position: fixed; top: 0; left: 0; bottom: 0; width: 80%; max-width: 320px;
    border-radius: 0; z-index: 60; transform: translateX(-100%);
    transition: transform .22s ease; overflow-y: auto; box-shadow: 2px 0 20px rgba(0,0,0,.15);
    flex-direction: column; align-items: stretch; gap: 0;
  }
  .filters.open { transform: translateX(0); }
  .filter-group { width: 100%; min-width: 0; margin-bottom: 14px; }
  .filters-reset { width: 100%; margin-left: 0; }
  .filters-head { display: flex; }
  .filters-mask {
    display: block; position: fixed; inset: 0; background: rgba(0,0,0,.4);
    z-index: 55; opacity: 0; pointer-events: none; transition: opacity .2s;
  }
  .filters-mask.show { opacity: 1; pointer-events: auto; }
}

/* 手机（<640）：卡片 1 列 */
@media (max-width: 639px) {
  :root { font-size: 15px; }
  .app-header { gap: 10px; padding: 10px 12px; }
  .brand-text p { display: none; }
  .layout { padding: 12px; }
  .cards { grid-template-columns: 1fr; }
  .modal-mask { padding: 0; }
  .modal { border-radius: 0; min-height: 100%; max-width: 100%; }
  .modal-body { max-height: none; padding: 20px 16px 40px; }
}

/* 桌面端（≥1024）：筛选栏强制一行排列；学科分类选择框调窄，使排序框能同排显示 */
@media (min-width: 1024px) {
  .filters { flex-wrap: nowrap; }
  .filter-group { flex: 1 1 0; min-width: 0; }
  .filter-group select { min-width: 0; }
  /* 学科分类选择框调窄（其余筛选项等宽分配剩余空间） */
  #fgSubject { flex: 0 0 116px; }
}

/* 大屏桌面（≥1440）：单列卡片与筛选栏宽度略放宽，保持居中易读且同宽 */
@media (min-width: 1440px) {
  .cards { max-width: 820px; }
  .filters { max-width: 820px; }
  .content { max-width: 820px; }
}