/* 铁路校招通 · 样式 */
:root{
  --mint:#3EB489;
  --mint-dark:#2F9873;
  --mint-darker:#237F5E;
  --mint-soft:#EAF8F2;
  --mint-line:#D6EFE5;
  --bg:#F4F7F6;
  --card:#FFFFFF;
  --text:#1E2C29;
  --text2:#3C4F4A;
  --muted:#7C8C88;
  --line:#EAF0EE;
  --danger:#E15B41;
  --warn:#E9A23B;
  --blue:#3A7BD5;
  --radius:14px;
  --radius-s:10px;
  --shadow:0 2px 10px rgba(31,60,50,.06);
  --shadow-m:0 6px 22px rgba(31,60,50,.10);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;height:100%;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}
#app{display:flex;flex-direction:column;min-height:100vh;max-width:720px;margin:0 auto;background:var(--bg);}

/* 顶部栏 */
#topbar{
  position:sticky;top:0;z-index:40;
  background:linear-gradient(135deg,#3EB489,#2F9873);
  color:#fff;padding:calc(10px + var(--safe-t)) 14px 12px;
  box-shadow:0 2px 12px rgba(47,152,115,.22);
}
#topbar .tb-row{display:flex;align-items:center;gap:8px;}
#topbar .tb-back{display:none;background:rgba(255,255,255,.18);border:0;color:#fff;width:30px;height:30px;border-radius:50%;font-size:17px;line-height:1;cursor:pointer;}
#topbar .tb-back.show{display:flex;align-items:center;justify-content:center;}
#topbar h1{font-size:17px;margin:0;font-weight:600;letter-spacing:.5px;flex:1;}
#topbar .tb-sub{font-size:12px;opacity:.85;margin-top:2px;}
#topbar .tb-logo{display:flex;align-items:center;gap:8px;}

/* 主区 */
#view{flex:1;padding:12px 12px calc(78px + var(--safe-b));animation:fade .22s ease;}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;margin-bottom:12px;}
.card.tight{padding:12px;}
.card-t{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:600;margin:0 0 8px;}
.muted{color:var(--muted);font-size:12.5px;}
.small{font-size:12.5px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--mint);color:#fff;border:0;border-radius:var(--radius-s);
  padding:10px 16px;font-size:14.5px;font-weight:500;cursor:pointer;
  transition:.15s;min-height:42px;font-family:inherit;
}
.btn:active{background:var(--mint-darker);transform:scale(.985);}
.btn.block{display:flex;width:100%;}
.btn.ghost{background:var(--mint-soft);color:var(--mint-dark);}
.btn.line{background:#fff;color:var(--mint-dark);border:1px solid var(--mint-line);}
.btn.gray{background:#F1F5F4;color:var(--text2);}
.btn.danger{background:var(--danger);}
.btn[disabled]{opacity:.5;pointer-events:none;}
.btn.sm{padding:6px 12px;font-size:13px;min-height:34px;}

/* 首页 */
.hero{
  background:linear-gradient(135deg,#3EB489 0%,#2F9873 60%,#2A8A68 100%);
  color:#fff;border-radius:var(--radius);padding:16px;margin-bottom:12px;
  box-shadow:0 6px 20px rgba(47,152,115,.25);
}
.hero .cd{display:flex;align-items:baseline;gap:8px;margin:6px 0 10px;}
.hero .cd b{font-size:38px;line-height:1;font-weight:700;letter-spacing:-1px;}
.hero .cd span{font-size:13px;opacity:.9;}
.hero .meta{display:flex;gap:14px;font-size:12.5px;opacity:.92;flex-wrap:wrap;}
.hero .chk{
  margin-top:12px;background:rgba(255,255,255,.2);border:0;color:#fff;
  border-radius:var(--radius-s);padding:9px 14px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;width:100%;
}
.hero .chk.done{background:rgba(255,255,255,.35);}

.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
.qe{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px 6px;text-align:center;cursor:pointer;transition:.15s;}
.qe:active{transform:scale(.96);}
.qe .qi{font-size:22px;line-height:1.2;}
.qe .qt{font-size:12px;color:var(--text2);margin-top:4px;}

.stat3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center;}
.stat3 .v{font-size:20px;font-weight:700;color:var(--mint-dark);}
.stat3 .l{font-size:11.5px;color:var(--muted);}

.pbar{height:8px;background:var(--mint-soft);border-radius:99px;overflow:hidden;}
.pbar i{display:block;height:100%;background:linear-gradient(90deg,#3EB489,#2F9873);border-radius:99px;transition:width .4s;}

/* 标签页 */
.tabs{display:flex;gap:6px;background:#fff;padding:5px;border-radius:12px;box-shadow:var(--shadow);margin-bottom:12px;}
.tabs button{
  flex:1;border:0;background:transparent;padding:9px 4px;border-radius:9px;
  font-size:14px;color:var(--text2);cursor:pointer;font-family:inherit;transition:.15s;
}
.tabs button.on{background:var(--mint);color:#fff;font-weight:600;}

/* 列表 */
.row{
  display:flex;align-items:center;gap:10px;padding:12px 12px;background:#fff;
  border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:9px;cursor:pointer;transition:.15s;
}
.row:active{transform:scale(.99);}
.row .ric{width:36px;height:36px;border-radius:10px;background:var(--mint-soft);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.row .rb{flex:1;min-width:0;}
.row .rt{font-size:14.5px;font-weight:500;}
.row .rs{font-size:12px;color:var(--muted);margin-top:1px;}
.row .arw{color:#C3D2CE;font-size:15px;}

.chip{
  display:inline-block;background:var(--mint-soft);color:var(--mint-dark);
  border-radius:99px;padding:3px 10px;font-size:12px;margin:0 6px 6px 0;
}
.chip.b{background:#EAF1FB;color:#2F6BC0;}
.chip.o{background:#FDF2E3;color:#B97A19;}
.chip.g{background:#F1F5F4;color:#5C6E6A;}

/* 章节详情 */
.sec{margin-bottom:16px;}
.sec h3{font-size:15.5px;margin:0 0 6px;color:var(--mint-darker);}
.sec p{margin:0 0 8px;color:var(--text2);}
.sec ul{margin:0;padding-left:18px;color:var(--text2);}
.sec li{margin-bottom:5px;}

.kp{background:var(--mint-soft);border-radius:var(--radius-s);padding:12px 14px;margin-bottom:12px;}
.kp .kt{font-weight:600;color:var(--mint-darker);font-size:14px;margin-bottom:6px;}
.kp ul{margin:0;padding-left:18px;color:var(--text2);}
.kp li{margin-bottom:4px;}

/* 测验 */
.q{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;margin-bottom:12px;}
.q .qq{font-weight:600;font-size:14.5px;margin-bottom:10px;line-height:1.5;}
.opt{
  display:flex;gap:9px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);
  border-radius:var(--radius-s);margin-bottom:8px;cursor:pointer;transition:.15s;font-size:14px;
}
.opt:active{background:#F7FAF9;}
.opt .ol{
  width:21px;height:21px;border-radius:50%;border:1.5px solid #C9DAD4;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:11.5px;color:var(--muted);margin-top:1px;
}
.opt.sel{border-color:var(--mint);background:var(--mint-soft);}
.opt.sel .ol{background:var(--mint);border-color:var(--mint);color:#fff;}
.opt.right{border-color:var(--mint);background:#EAF8F2;}
.opt.right .ol{background:var(--mint);border-color:var(--mint);color:#fff;}
.opt.wrong{border-color:#F0B8AC;background:#FDF1EE;}
.opt.wrong .ol{background:var(--danger);border-color:var(--danger);color:#fff;}
.exp{
  background:#F7FAF9;border-left:3px solid var(--mint);border-radius:0 var(--radius-s) var(--radius-s) 0;
  padding:10px 12px;font-size:13.5px;color:var(--text2);margin-top:4px;
}
.exp b{color:var(--mint-darker);}

/* 底部 Tab */
#tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:flex;background:rgba(255,255,255,.97);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:var(--safe-b);
  max-width:720px;margin:0 auto;
}
#tabbar button{
  flex:1;border:0;background:transparent;padding:7px 0 6px;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--muted);font-family:inherit;
}
#tabbar button .ti{font-size:20px;line-height:1.1;}
#tabbar button .tt{font-size:10.5px;}
#tabbar button.on{color:var(--mint);}
#tabbar button.on .tt{font-weight:600;}

/* 表单 */
.field{margin-bottom:12px;}
.field label{display:block;font-size:13px;color:var(--text2);margin-bottom:5px;font-weight:500;}
.field input,.field textarea,.field select{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-s);
  padding:10px 12px;font-size:14.5px;font-family:inherit;color:var(--text);
  background:#fff;outline:none;transition:.15s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--mint);}
.field textarea{min-height:120px;resize:vertical;line-height:1.6;}
.field .hint{font-size:11.5px;color:var(--muted);margin-top:4px;}

/* 弹层 */
.mask{
  position:fixed;inset:0;background:rgba(20,40,35,.45);z-index:80;
  display:flex;align-items:flex-end;justify-content:center;
}
.sheet{
  background:#fff;width:100%;max-width:720px;border-radius:18px 18px 0 0;
  padding:16px 14px calc(18px + var(--safe-b));max-height:86vh;overflow:auto;
}
.sheet h3{margin:0 0 10px;font-size:16px;}
.sheet .acts{display:flex;gap:10px;margin-top:14px;}

/* Toast */
#toast{
  position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(14px);
  background:rgba(30,50,45,.94);color:#fff;padding:9px 18px;border-radius:99px;
  font-size:13.5px;z-index:100;opacity:0;pointer-events:none;transition:.25s;
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* 空状态 */
.empty{text-align:center;padding:44px 20px;color:var(--muted);}
.empty .ei{font-size:40px;opacity:.55;}
.empty .et{margin-top:8px;font-size:14px;}

/* 日历 */
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;}
.cal .cd{
  aspect-ratio:1;border-radius:9px;background:#F6F9F8;display:flex;flex-direction:column;
  align-items:center;justify-content:center;font-size:12px;color:var(--muted);cursor:pointer;
}
.cal .cd.on{background:var(--mint);color:#fff;font-weight:600;}
.cal .cd.today{border:1.5px solid var(--mint);}
.cal .cd .cdv{font-size:11px;line-height:1;}
.cal .cd.blk{background:transparent;cursor:default;}

/* 评分条 */
.dim{display:flex;align-items:center;gap:9px;margin-bottom:7px;}
.dim .dn{width:74px;font-size:12.5px;color:var(--text2);flex-shrink:0;}
.dim .db{flex:1;height:7px;background:var(--mint-soft);border-radius:99px;overflow:hidden;}
.dim .db i{display:block;height:100%;background:var(--mint);border-radius:99px;}
.dim .dv{width:30px;text-align:right;font-size:12.5px;color:var(--mint-dark);font-weight:600;flex-shrink:0;}

.score-big{text-align:center;padding:6px 0 10px;}
.score-big .sv{font-size:44px;font-weight:800;color:var(--mint-dark);line-height:1.1;}
.score-big .sl{font-size:12.5px;color:var(--muted);}

.ans-box{background:#F7FAF9;border-radius:var(--radius-s);padding:11px 12px;font-size:13.5px;color:var(--text2);white-space:pre-wrap;word-break:break-word;}

/* 图表 */
.chart{width:100%;height:150px;display:block;}

.seg{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px;}
.seg button{
  border:1px solid var(--line);background:#fff;border-radius:99px;padding:6px 13px;
  font-size:13px;color:var(--text2);cursor:pointer;font-family:inherit;transition:.15s;
}
.seg button.on{background:var(--mint);border-color:var(--mint);color:#fff;font-weight:500;}

.badge{display:inline-block;background:var(--mint-soft);color:var(--mint-dark);font-size:11px;padding:2px 8px;border-radius:99px;margin-left:6px;vertical-align:middle;}
.badge.f{background:#EAF1FB;color:#2F6BC0;}
.badge.p{background:#FDF0F7;color:#C0448C;}
.badge.c{background:#F1F5F4;color:#5C6E6A;}

.divider{height:1px;background:var(--line);margin:12px 0;}
.center{text-align:center;}
.flex{display:flex;gap:10px;align-items:center;}
.between{display:flex;justify-content:space-between;align-items:center;}
.wrap{flex-wrap:wrap;}
hr{border:0;border-top:1px solid var(--line);margin:12px 0;}
h2.sh{font-size:14px;color:var(--muted);font-weight:600;margin:16px 0 8px;letter-spacing:.5px;}

@media (min-width:560px){
  .grid4{gap:10px;}
  body{font-size:15.5px;}
}