/* ===== 生活方式医学题库 · 移动端 H5 ===== */
* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
:root {
  --bg:#f2f4f9; --card:#ffffff; --ink:#1c2333; --sub:#7a8499;
  --brand:#3a7bfd; --brand2:#6a5cff; --ok:#0fb981; --bad:#f0524d; --warn:#f5a623;
  --radius:18px;
  --shadow:0 6px 24px rgba(31,45,84,.08);
}
html { font-size:16px; }
body {
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink); min-height:100vh;
}
#app { max-width:560px; margin:0 auto; min-height:100vh; background:var(--bg); padding-bottom:32px; }
button { font-family:inherit; border:none; cursor:pointer; }
img { max-width:100%; }

/* ---- 顶栏 ---- */
.topbar {
  padding:18px 20px 26px; color:#fff; border-radius:0 0 26px 26px;
  background:linear-gradient(135deg,#3a7bfd 0%,#6a5cff 100%);
  box-shadow:0 10px 30px rgba(58,123,253,.28);
}
.topbar .hello { font-size:.86rem; opacity:.85; }
.topbar h1 { font-size:1.5rem; margin-top:2px; letter-spacing:.5px; }
.topbar .slogan { font-size:.8rem; opacity:.75; margin-top:6px; }

/* ---- 三功能模块 ---- */
.stat-row { display:flex; gap:12px; padding:0 16px; margin-top:-20px; }
.stat-card {
  flex:1; background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow);
  padding:14px 12px; text-align:center; position:relative; overflow:hidden;
}
.stat-card .num { font-size:1.6rem; font-weight:800; line-height:1.15; }
.stat-card .lbl { font-size:.75rem; color:var(--sub); margin-top:2px; }
.stat-card.c-doing .num { color:var(--brand); }
.stat-card.c-count .num { color:var(--brand2); }
.stat-card.c-wrong { cursor:pointer; }
.stat-card.c-wrong .num { color:var(--bad); }
.stat-card .badge-go {
  display:inline-block; margin-top:6px; font-size:.7rem; color:#fff;
  background:linear-gradient(90deg,#f0524d,#ff7a45); padding:3px 10px; border-radius:99px;
}
.stat-card .mini { font-size:.68rem; color:var(--sub); margin-top:4px; }

/* ---- 题库卡片 ---- */
.section-title { padding:22px 20px 12px; font-size:1.02rem; font-weight:700; display:flex; align-items:center; gap:8px; }
.section-title::before { content:""; width:4px; height:16px; border-radius:2px; background:linear-gradient(180deg,#3a7bfd,#6a5cff); }
.bank-list { padding:0 16px; display:flex; flex-direction:column; gap:14px; }
.bank-card {
  background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow);
  overflow:hidden;
}
.bank-head { padding:16px 16px 12px; display:flex; align-items:flex-start; gap:12px; }
.bank-icon {
  width:46px; height:46px; border-radius:14px; flex:none; display:flex; align-items:center; justify-content:center;
  font-size:1.3rem; color:#fff;
}
.cover-c1 .bank-icon { background:linear-gradient(135deg,#3a7bfd,#6a5cff); }
.cover-c2 .bank-icon { background:linear-gradient(135deg,#0fb981,#2dd4bf); }
.cover-c3 .bank-icon { background:linear-gradient(135deg,#f5a623,#fb7185); }
.cover-c4 .bank-icon { background:linear-gradient(135deg,#8b5cf6,#ec4899); }
.bank-title { font-size:1.02rem; font-weight:700; line-height:1.35; }
.bank-sub { font-size:.75rem; color:var(--sub); margin-top:3px; }
.bank-meta { display:flex; gap:12px; padding:0 16px; font-size:.74rem; color:var(--sub); }
.bank-meta b { color:var(--ink); font-weight:600; }
.progress-wrap { padding:10px 16px 0; }
.progress-bar { height:8px; border-radius:99px; background:#eef1f7; overflow:hidden; }
.progress-bar i { display:block; height:100%; border-radius:99px; background:linear-gradient(90deg,#3a7bfd,#6a5cff); transition:width .4s; }
.progress-txt { font-size:.72rem; color:var(--sub); margin-top:5px; display:flex; justify-content:space-between; }
.bank-actions { display:flex; gap:10px; padding:14px 16px 16px; }
.btn {
  flex:1; padding:11px 0; border-radius:12px; font-size:.9rem; font-weight:600; text-align:center;
}
.btn-primary { background:linear-gradient(90deg,#3a7bfd,#6a5cff); color:#fff; box-shadow:0 4px 14px rgba(58,123,253,.35); }
.btn-ghost { background:#f3f5fb; color:var(--brand); }
.btn-danger-ghost { background:#fdf1f0; color:var(--bad); }
.btn-wrong { background:linear-gradient(90deg,#f0524d,#ff7a45); color:#fff; }
.btn[disabled] { opacity:.45; pointer-events:none; }
.btn-s { flex:none; padding:8px 14px; font-size:.8rem; border-radius:10px; }

/* ---- 答题页 ---- */
.quiz-head {
  position:sticky; top:0; z-index:9; background:rgba(242,244,249,.92); backdrop-filter:blur(8px);
  padding:12px 16px 10px;
}
.quiz-head .row1 { display:flex; justify-content:space-between; align-items:center; font-size:.82rem; color:var(--sub); }
.quiz-head .qno { font-weight:700; color:var(--ink); font-size:.95rem; }
.tag { font-size:.66rem; padding:2px 8px; border-radius:99px; font-weight:600; }
.tag-type { background:#e8efff; color:var(--brand); }
.tag-d1 { background:#e7f9f2; color:var(--ok); }
.tag-d2 { background:#e8efff; color:var(--brand); }
.tag-d3 { background:#fff4e0; color:var(--warn); }
.tag-d4 { background:#fdeceb; color:var(--bad); }
.tag-wrong { background:#fdeceb; color:var(--bad); }
.quiz-progress { margin-top:8px; }
.quiz-body { padding:8px 16px 110px; }
.q-card { background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow); padding:18px 16px; }
.q-stem { font-size:1.02rem; line-height:1.75; font-weight:600; white-space:pre-wrap; }
.q-image { margin-top:12px; border-radius:12px; overflow:hidden; border:1px solid #eef1f7; cursor:zoom-in; }
.q-hint { font-size:.72rem; color:var(--sub); margin-top:8px; }
.blank-slot {
  display:inline-flex; align-items:center; justify-content:center; min-width:76px; padding:2px 10px; margin:0 2px;
  border-bottom:2px solid var(--brand); color:var(--brand); font-weight:700; cursor:pointer; vertical-align:baseline;
}
.blank-slot.empty { color:#b6bdce; border-bottom-color:#c9d2e6; }
.blank-slot.filled { background:#eef3ff; border-radius:8px 8px 0 0; }
.opt-list { margin-top:16px; display:flex; flex-direction:column; gap:10px; }
.opt {
  display:flex; gap:10px; align-items:flex-start; padding:13px 14px; border-radius:14px;
  background:#f6f8fd; border:2px solid transparent; font-size:.94rem; line-height:1.55; cursor:pointer;
  transition:all .15s;
}
.opt .key {
  width:26px; height:26px; border-radius:50%; flex:none; display:flex; align-items:center; justify-content:center;
  background:#e6ebf7; color:var(--sub); font-size:.8rem; font-weight:700;
}
.opt.sel { background:#eef3ff; border-color:var(--brand); }
.opt.sel .key { background:var(--brand); color:#fff; }
.opt.right { background:#e7f9f2; border-color:var(--ok); }
.opt.right .key { background:var(--ok); color:#fff; }
.opt.wrong { background:#fdeceb; border-color:var(--bad); }
.opt.wrong .key { background:var(--bad); color:#fff; }
.opt.pool-used { opacity:.38; pointer-events:none; }
.opt.static { cursor:default; }
.judge-row { display:flex; gap:12px; margin-top:16px; }
.judge-row .opt { flex:1; justify-content:center; align-items:center; font-weight:700; font-size:1rem; }
.feedback { margin-top:14px; border-radius:14px; padding:13px 14px; font-size:.86rem; line-height:1.7; }
.feedback.ok { background:#e7f9f2; color:#0a7c5c; }
.feedback.bad { background:#fdeceb; color:#b3372f; }
.feedback .ana { margin-top:6px; color:inherit; opacity:.9; }
.analysis-box { margin-top:14px; background:#f6f8fd; border-radius:14px; padding:13px 14px; font-size:.85rem; line-height:1.7; color:#465066; }
.analysis-box .src { margin-top:6px; font-size:.72rem; color:var(--sub); }

/* 底部操作条 */
.quiz-foot {
  position:fixed; bottom:0; left:50%; transform:translateX(-50%);
  width:100%; max-width:560px; background:#fff; box-shadow:0 -6px 24px rgba(31,45,84,.1);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom)); display:flex; gap:10px; z-index:10;
}

/* ---- 结果页 ---- */
.result-hero {
  margin:16px; border-radius:22px; padding:30px 20px; text-align:center; color:#fff;
  background:linear-gradient(135deg,#3a7bfd,#6a5cff); box-shadow:0 12px 30px rgba(58,123,253,.3);
}
.result-hero .score { font-size:3rem; font-weight:800; line-height:1; }
.result-hero .score small { font-size:1rem; font-weight:500; opacity:.8; }
.result-hero .desc { margin-top:8px; opacity:.9; font-size:.85rem; }
.result-grid { display:flex; gap:10px; margin:0 16px; }
.result-grid .cell { flex:1; background:#fff; border-radius:14px; box-shadow:var(--shadow); padding:14px 8px; text-align:center; }
.result-grid .v { font-size:1.25rem; font-weight:800; }
.result-grid .k { font-size:.72rem; color:var(--sub); margin-top:2px; }
.result-actions { padding:18px 16px; display:flex; flex-direction:column; gap:10px; }

/* ---- 错题本 ---- */
.wrong-item { background:#fff; border-radius:14px; box-shadow:var(--shadow); padding:14px; margin:0 16px 12px; }
.wrong-item .stem { font-size:.92rem; font-weight:600; line-height:1.6; }
.wrong-item .meta { margin-top:8px; display:flex; gap:8px; align-items:center; font-size:.72rem; color:var(--sub); }
.empty { text-align:center; color:var(--sub); padding:60px 20px; font-size:.88rem; }
.empty .ico { font-size:2.6rem; display:block; margin-bottom:10px; }

/* ---- 弹层 ---- */
.mask { position:fixed; inset:0; background:rgba(15,22,40,.55); z-index:50; display:flex; align-items:flex-end; justify-content:center; }
.sheet { width:100%; max-width:560px; background:#fff; border-radius:22px 22px 0 0; padding:22px 20px calc(22px + env(safe-area-inset-bottom)); }
.sheet h3 { font-size:1.05rem; margin-bottom:8px; }
.sheet p { font-size:.85rem; color:var(--sub); line-height:1.7; }
.sheet .row { display:flex; gap:10px; margin-top:18px; }
.img-viewer { position:fixed; inset:0; background:rgba(0,0,0,.92); z-index:60; display:flex; align-items:center; justify-content:center; }
.img-viewer img { max-width:96vw; max-height:92vh; border-radius:8px; }
.toast {
  position:fixed; left:50%; top:44%; transform:translate(-50%,-50%); z-index:70;
  background:rgba(15,22,40,.85); color:#fff; padding:12px 22px; border-radius:12px; font-size:.88rem;
}
.loading { text-align:center; padding:80px 0; color:var(--sub); font-size:.9rem; }
.loading::after { content:"…"; animation:blink 1s infinite; }
@keyframes blink { 50% { opacity:.2; } }