/* ============================================================
   保安证·叉车证 考试题库 —— 前台样式
   ============================================================ */
:root {
  --primary: #1e5eff;
  --primary-dark: #1248cc;
  --primary-light: #e8efff;
  --accent: #ff9f1c;
  --success: #16a34a;
  --danger: #dc2626;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(30, 60, 130, 0.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--primary); text-decoration: none; }
a:hover { opacity: .85; }
.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
main { flex: 1; padding: 24px 0 40px; }

/* ---------- 滚动公告 ---------- */
.ticker-wrap {
  background: linear-gradient(90deg, #fff7e6, #fff3d6);
  border-bottom: 1px solid #ffe3a8;
  display: flex;
  align-items: center;
  height: 38px;
  overflow: hidden;
}
.ticker-label {
  flex: 0 0 auto;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  padding: 0 14px;
  height: 100%;
  display: flex;
  align-items: center;
  font-weight: 600;
}
.ticker-box { flex: 1; overflow: hidden; position: relative; }
.ticker-track {
  display: inline-block;
  white-space: nowrap;
  animation: tickerMove 25s linear infinite;
  padding-left: 100%;
}
.ticker-box:hover .ticker-track { animation-play-state: paused; }
.ticker-item { font-size: 13.5px; color: #8a5b00; margin-right: 60px; }
@keyframes tickerMove {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

/* ---------- 头部导航 ---------- */
.site-header {
  background: #fff;
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo a { display: flex; align-items: center; gap: 10px; color: var(--text); }
.logo-badge {
  background: linear-gradient(135deg, var(--primary), #6a9bff);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  width: 46px; height: 46px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.logo-text strong { font-size: 18px; display: block; line-height: 1.3; }
.logo-text small { font-size: 12px; color: var(--text-light); }
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
}
.main-nav a:hover { background: var(--primary-light); color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; }

/* ---------- 首页 ---------- */
.hero {
  background: linear-gradient(135deg, #1248cc 0%, #1e5eff 55%, #5b8cff 100%);
  color: #fff;
  border-radius: 18px;
  padding: 46px 36px;
  margin: 8px 0 26px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; right: -60px; top: -60px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.hero h1 { font-size: 30px; margin-bottom: 10px; }
.hero p { font-size: 16px; opacity: .92; max-width: 640px; }
.hero-actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 2; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 22px; border-radius: 10px;
  border: none; cursor: pointer;
  font-size: 15px; font-weight: 600;
  transition: .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); opacity: 1; }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { background: #f0f4ff; opacity: 1; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; border: 1.5px solid #cbd5e1; color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.section-title { font-size: 21px; margin: 30px 0 16px; display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ""; width: 5px; height: 20px; background: var(--primary); border-radius: 3px; }

.exam-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.exam-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: .25s;
}
.exam-card:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(30,60,130,.12); }
.exam-card h3 { font-size: 19px; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.exam-card .desc { color: var(--text-light); font-size: 14px; margin-bottom: 12px; }
.exam-card .stats { font-size: 13px; color: var(--text-light); margin-bottom: 16px; }
.exam-card .stats b { color: var(--primary); font-size: 15px; }
.exam-card .btn { margin-right: 8px; margin-bottom: 6px; }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feature-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  text-align: center;
  box-shadow: var(--shadow);
}
.feature-item .ico { font-size: 30px; }
.feature-item h4 { font-size: 15px; margin: 8px 0 4px; }
.feature-item p { font-size: 12.5px; color: var(--text-light); }

.content-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.content-block h3 { margin-bottom: 10px; color: var(--primary-dark); }

.contact-strip {
  display: flex; flex-wrap: wrap; gap: 22px;
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 18px 24px;
  color: var(--primary-dark);
  font-size: 14.5px;
}

.visit-stats {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 26px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px 20px; margin-top: 18px;
  color: var(--text-light); font-size: 14px;
}
.visit-stats b { color: var(--primary); font-size: 16px; }

/* ---------- 练习 / 考试通用 ---------- */
.page-head { margin-bottom: 20px; }
.page-head h1 { font-size: 24px; }
.page-head .sub { color: var(--text-light); font-size: 14px; margin-top: 4px; }
.toolbar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.toolbar select, .toolbar input[type="number"] {
  padding: 7px 10px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; background: #fff;
}
.progress-bar { height: 8px; background: #e5e7eb; border-radius: 99px; overflow: hidden; margin: 12px 0; }
.progress-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), #6a9bff); transition: width .3s; }

.question-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.q-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.q-type {
  background: var(--primary-light); color: var(--primary);
  font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 99px;
}
.q-type.multi { background: #fef3c7; color: #b45309; }
.q-type.judge { background: #dcfce7; color: #15803d; }
.q-cat { font-size: 12.5px; color: var(--text-light); }
.q-text { font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.options { list-style: none; }
.options li {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: .15s;
  font-size: 15px;
}
.options li:hover { border-color: var(--primary); background: #f8fbff; }
.options li.selected { border-color: var(--primary); background: var(--primary-light); }
.options li.correct { border-color: var(--success); background: #ecfdf3; color: #14532d; }
.options li.wrong { border-color: var(--danger); background: #fef2f2; color: #7f1d1d; }
.options li.disabled { cursor: not-allowed; }
.opt-letter { font-weight: 700; margin-right: 8px; color: var(--primary); }

.feedback {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  display: none;
}
.feedback.show { display: block; }
.feedback.correct { background: #ecfdf3; color: #14532d; border: 1px solid #bbf7d0; }
.feedback.wrong { background: #fef2f2; color: #7f1d1d; border: 1px solid #fecaca; }
.feedback .analysis { margin-top: 6px; color: #374151; }

.pager { display: flex; gap: 12px; margin: 20px 0; flex-wrap: wrap; }
.card-note { text-align: center; color: var(--text-light); font-size: 13px; margin-top: 12px; }

/* ---------- 考试 ---------- */
.exam-topbar {
  position: sticky; top: 72px; z-index: 50;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 10px 18px; margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.timer { font-size: 19px; font-weight: 700; color: var(--danger); font-variant-numeric: tabular-nums; }
.exam-nav {
  display: grid; grid-template-columns: repeat(10, 1fr); gap: 8px;
  margin-bottom: 16px;
}
.exam-nav button {
  height: 38px; border: 1.5px solid var(--border); background: #fff;
  border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 600;
}
.exam-nav button.answered { background: var(--success); border-color: var(--success); color: #fff; }
.exam-nav button.current { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-light); }
.exam-nav button.marked { background: var(--accent); border-color: var(--accent); color: #fff; }

.exam-actions { margin-top: 18px; }
.exam-btn-row {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  flex-basis: 100%; margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border);
}

.result-box { text-align: center; padding: 30px; }
.result-score { font-size: 52px; font-weight: 800; color: var(--primary); }
.result-score.pass { color: var(--success); }
.result-score.fail { color: var(--danger); }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 24px 0; }
.result-grid .item { background: var(--bg); border-radius: 10px; padding: 16px; }
.result-grid .item b { display: block; font-size: 26px; }
.result-grid .item span { font-size: 13px; color: var(--text-light); }

/* ---------- 分类练习页 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); transition: .2s;
}
.cat-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.cat-card h4 { font-size: 16px; margin-bottom: 6px; }
.cat-card p { font-size: 13px; color: var(--text-light); margin-bottom: 12px; }

/* ---------- 弹窗公告 ---------- */
.popup-mask {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(15, 23, 42, .55);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.popup-mask.hide { display: none; }
.popup-box {
  background: #fff; border-radius: 16px;
  max-width: 460px; width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
  overflow: hidden;
  animation: popupIn .3s ease;
}
@keyframes popupIn { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.popup-head {
  background: linear-gradient(135deg, var(--primary), #6a9bff);
  color: #fff; padding: 14px 18px;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 700; font-size: 16px;
}
.popup-close {
  background: rgba(255,255,255,.2); border: none; color: #fff;
  width: 28px; height: 28px; border-radius: 50%;
  font-size: 17px; cursor: pointer; line-height: 1;
}
.popup-body { padding: 20px 22px; font-size: 14.5px; max-height: 50vh; overflow: auto; }
.popup-body p { margin-bottom: 8px; }
.popup-foot { padding: 0 22px 18px; text-align: right; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #111c33; color: #9fb0c9;
  padding: 26px 0; text-align: center; font-size: 13.5px;
  margin-top: 20px;
}
.site-footer .footer-links { margin-top: 8px; }
.site-footer a { color: #c9d6ea; }
.site-footer .footer-beian { margin-top: 10px; font-size: 12.5px; }
.site-footer .footer-beian a { text-decoration: none; border-bottom: 1px dotted #5a6f92; }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .exam-cards, .cat-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .header-inner { height: auto; flex-direction: column; padding: 12px 0; gap: 10px; }
  .main-nav { flex-wrap: wrap; justify-content: center; }
  .main-nav a { padding: 6px 10px; font-size: 14px; }
  .exam-topbar { top: 0; }
  .hero { padding: 32px 22px; }
  .hero h1 { font-size: 23px; }
}