/* 学习 H5 — 轻量学考（无营销 tabbar） */
:root {
  --wx-green: #07c160;
  --primary: #1e3a5f;
  --bg: #f5f5f5;
  --card: #fff;
  --text: #191919;
  --muted: #888;
  --border: #e8e8e8;
  --danger: #e54d42;
  --ok: #07c160;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body.learn-body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  padding-bottom: 48px;
  -webkit-tap-highlight-color: transparent;
}

.learn-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.learn-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
}
.learn-logo { height: 28px; width: auto; border-radius: 4px; }
.learn-nav { display: flex; align-items: center; gap: 10px; font-size: 13px; flex-wrap: wrap; justify-content: flex-end; }
.learn-nav a { color: var(--primary); text-decoration: none; }
.learn-link-btn {
  border: none; background: none; color: var(--muted); font-size: 14px; cursor: pointer;
}

.learn-main { max-width: 640px; margin: 0 auto; padding: 12px 12px 24px; }

.learn-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.learn-card h1 { font-size: 20px; margin-bottom: 8px; }
.learn-h2 { font-size: 16px; margin-bottom: 10px; }
.learn-muted { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.learn-error { color: var(--danger); font-size: 14px; margin: 8px 0; }
.learn-ok { color: var(--ok); font-size: 14px; margin: 8px 0; }
.learn-empty { color: var(--muted); text-align: center; padding: 24px 8px; }
.learn-back {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--primary); text-decoration: none; font-size: 14px; margin-bottom: 10px;
}

.learn-form label { display: block; margin-bottom: 14px; }
.learn-form label > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.learn-form input {
  width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 16px;
}
.captcha-row { display: flex; gap: 8px; align-items: flex-end; margin-bottom: 14px; }
.captcha-row[hidden] { display: none !important; }
.captcha-row label { flex: 1; margin-bottom: 0; }
.captcha-challenge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
  padding: 10px 12px;
  margin-bottom: 6px;
  border-radius: 8px;
  background: linear-gradient(135deg, #eef3f8, #f7f7f7);
  border: 1px dashed var(--border);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary);
  user-select: none;
}
.learn-nav[hidden],
.learn-error[hidden],
.learn-ok[hidden],
.wechat-box[hidden],
#smsRow[hidden],
#passwordRow[hidden] {
  display: none !important;
}

.learn-tabs {
  display: flex; gap: 0; margin: 12px 0 16px; border-bottom: 1px solid var(--border);
}
.learn-tabs .tab {
  flex: 1; padding: 10px; border: none; background: none; font-size: 15px;
  color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent;
}
.learn-tabs .tab.active { color: var(--wx-green); border-bottom-color: var(--wx-green); font-weight: 600; }

.sms-row { display: flex; gap: 8px; }
.sms-row input { flex: 1; }
.wechat-box { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 18px; border-radius: 8px; font-size: 15px; font-weight: 500;
  border: none; cursor: pointer; text-decoration: none;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--wx-green); color: #fff; }
.btn-outline { background: #fff; color: var(--wx-green); border: 1px solid var(--wx-green); }
.btn-ghost { background: #f0f0f0; color: var(--text); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.learn-course-list, .learn-lesson-list, .learn-cert-list { list-style: none; }
.learn-course-item, .learn-cert-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  overflow: hidden;
}
.learn-course-item a {
  display: block; padding: 14px; text-decoration: none; color: inherit;
}
.learn-course-item h3, .learn-cert-item h3 { font-size: 16px; margin-bottom: 6px; }
.learn-cert-item { padding: 14px; }
.meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.tag {
  display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 999px;
  background: #f0f4f8; color: var(--primary);
}
.progress-bar {
  height: 6px; background: #eee; border-radius: 3px; overflow: hidden; margin-bottom: 6px;
}
.progress-bar i { display: block; height: 100%; background: var(--wx-green); }

.learn-lesson-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.learn-lesson-list li:last-child { border-bottom: none; }
.lesson-title { flex: 1; font-size: 15px; }
.lesson-done { color: var(--ok); font-size: 12px; }
.lesson-meta { font-size: 12px; margin-top: 4px; line-height: 1.4; }

.player-card { padding-bottom: 10px; }
.video-shell {
  position: relative;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.video-shell video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #000;
}
.video-watermark {
  position: absolute;
  padding: 4px 8px;
  font-size: 12px;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,.55);
  pointer-events: none;
  white-space: nowrap;
  z-index: 2;
}
.video-watermark.top-left { top: 10px; left: 10px; }
.video-watermark.top-right { top: 10px; right: 10px; }
.video-watermark.bottom-left { bottom: 10px; left: 10px; }
.video-watermark.bottom-right { bottom: 10px; right: 10px; }

.exam-q { margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.exam-q h3 { font-size: 15px; font-weight: 600; margin-bottom: 10px; }
.exam-opt {
  display: flex; gap: 8px; align-items: flex-start;
  padding: 8px 0; font-size: 14px; cursor: pointer;
}

.learn-footer {
  text-align: center; color: var(--muted); font-size: 12px; padding: 16px;
}
.learn-footer a { color: var(--primary); }

.learn-profile-dl {
  margin-top: 12px;
}
.learn-profile-dl > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.learn-profile-dl dt { color: var(--muted); flex-shrink: 0; }
.learn-profile-dl dd { text-align: right; word-break: break-all; }

.learn-score-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  vertical-align: middle;
}
.learn-score-badge.ok { background: #e8f8ef; color: var(--ok); }
.learn-score-badge.fail { background: #fdecea; color: var(--danger); }

body.learn-body.client-desktop {
  background: #f5f7fa;
}
body.client-desktop .learn-footer {
  display: none !important;
}
body.client-desktop .learn-header {
  display: none !important;
}
body.client-desktop .learn-main {
  max-width: 900px;
  margin: 0 auto;
  padding-top: 12px;
}