:root{
  --bg:#f4f3ef; --card:#fff; --ink:#1c2430; --ink2:#5f6b7a; --line:#e4e2dc;
  --accent:#1f5582; --accent2:#2c6d9f; --ok:#2f7d52; --ng:#b4442f; --mid:#a9741c;
  --radius:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:15px; line-height:1.65; -webkit-text-size-adjust:100%;
}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:760px;margin:0 auto;padding:0 14px 120px}
.wide{max-width:1080px}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:.01em}
small{font-size:12px}
.muted{color:var(--ink2)}
.warn{color:var(--ng)}
.num{font-variant-numeric:tabular-nums;text-align:right}

/* 顶部 */
.hdr{position:sticky;top:0;z-index:30;background:rgba(244,243,239,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr-in{max-width:760px;margin:0 auto;padding:9px 14px 8px;display:flex;align-items:center;gap:10px}
.hdr .ttl{font-size:14px;font-weight:700;line-height:1.25}
.hdr .ttl span{display:block;font-size:11px;color:var(--ink2);font-weight:400;letter-spacing:.04em}
.hdr .step{margin-left:auto;font-size:12px;color:var(--ink2);white-space:nowrap}
.prog{height:3px;background:var(--line)}
.prog i{display:block;height:100%;width:0;background:var(--accent);transition:width .25s ease}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:14px 0}
.card h2{font-size:16px;margin-bottom:2px}
.card .sub{font-size:12px;color:var(--ink2);margin-bottom:12px}

/* 信息表单 */
.field{margin:14px 0}
.field>label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.field .hint{font-size:11px;color:var(--ink2);font-weight:400;margin-left:4px}
input[type=text],textarea,select{
  width:100%;padding:11px 12px;font-size:16px;font-family:inherit;color:var(--ink);
  background:#fbfaf7;border:1px solid var(--line);border-radius:10px;outline:none
}
input[type=text]:focus,textarea:focus,select:focus{border-color:var(--accent2);background:#fff}
textarea{min-height:64px;resize:vertical}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{
  display:inline-flex;align-items:center;gap:6px;padding:9px 13px;border:1px solid var(--line);
  border-radius:999px;background:#fbfaf7;font-size:14px;cursor:pointer;user-select:none
}
.chips label input{display:none}
.chips label.on{background:var(--accent);border-color:var(--accent);color:#fff}
.req{color:var(--ng);font-size:11px;margin-left:3px}
.err{color:var(--ng);font-size:12px;margin-top:6px;display:none}
.err.show{display:block}

/* 問題块 */
.mblock{margin:0 0 18px}
.mhead{display:flex;align-items:baseline;gap:8px;padding:2px 0 8px;border-bottom:1px solid var(--line);margin-bottom:4px}
.mhead .no{font-weight:700;font-size:14px}
.mhead .jp{font-size:12px;color:var(--ink2)}
.mhead .cnt{margin-left:auto;font-size:11px;color:var(--ink2)}

.qrow{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px dashed #efeee9}
.qrow:last-child{border-bottom:0}
.qid{width:38px;flex:0 0 38px;font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;color:var(--ink)}
.qhint{flex:1;min-width:0;font-size:12.5px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.opts{display:flex;gap:6px;flex:0 0 auto}
.opts button{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fbfaf7;
  font-size:15px;font-weight:600;color:var(--ink2);font-variant-numeric:tabular-nums;cursor:pointer;
  transition:transform .08s,background .12s,color .12s,border-color .12s
}
.opts button:active{transform:scale(.94)}
.opts button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.opts button.on::after{content:""}
.sel-line{font-size:11px;color:var(--ink2);min-width:26px;text-align:right}
@media(min-width:700px){
  .cols2{column-count:2;column-gap:22px}
  .cols2 .mblock{break-inside:avoid}
}

/* 底栏 */
.foot{
  position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(255,255,255,.96);
  border-top:1px solid var(--line);box-shadow:0 -2px 12px rgba(0,0,0,.05);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom))
}
.foot-in{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px}
.foot .meta{font-size:12px;color:var(--ink2);line-height:1.35}
.foot .meta b{color:var(--ink)}
.btn{
  appearance:none;border:1px solid var(--accent);background:var(--accent);color:#fff;
  padding:11px 20px;border-radius:11px;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer
}
.btn.ghost{background:#fff;color:var(--accent)}
.btn:disabled{opacity:.4;cursor:default}
.btn.sm{padding:8px 14px;font-size:13px;border-radius:9px}
.btn.wide2{width:100%}
.spacer{flex:1}

/* 报告页 */
.pill{display:inline-block;padding:2px 9px;border-radius:999px;background:#eef1f5;color:var(--ink2);font-size:11px;margin-left:6px}
.badge{display:inline-block;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:700}
.badge.ok{background:#e7f3ec;color:var(--ok)}
.badge.mid{background:#fbf0dc;color:var(--mid)}
.badge.ng{background:#fbe9e5;color:var(--ng)}
.seccards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.seccard{background:#fbfaf7;border:1px solid var(--line);border-radius:12px;padding:11px 12px}
.seccard.bad{background:#fdf4f2;border-color:#f0cdc5}
.seccard .sname{font-size:11px;color:var(--ink2)}
.seccard .snum{font-size:24px;font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums}
.seccard .snum small{font-size:12px;color:var(--ink2);font-weight:400}
.seccard .sraw{font-size:10.5px;color:var(--ink2);margin-top:4px}
.bar{display:block;height:6px;background:#e9e7e1;border-radius:99px;overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;background:var(--accent2);border-radius:99px}
.bar.ok i{background:var(--ok)} .bar.ng i{background:var(--ng)} .bar.mid i{background:var(--mid)}

table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;font-weight:600;color:var(--ink2);font-size:11.5px;padding:6px 6px;border-bottom:1px solid var(--line)}
td{padding:7px 6px;border-bottom:1px solid #f0eee9;vertical-align:middle}
td.ok{color:var(--ok);font-weight:700} td.ng{color:var(--ng);font-weight:700} td.mid{color:var(--mid);font-weight:700}
tr.blank td{background:#fdfbf6}
td .bar{min-width:70px;margin:0}

.adv{border-left:3px solid var(--accent);background:#f7f9fb;padding:10px 12px;border-radius:0 10px 10px 0;margin:10px 0}
.adv .t{font-size:13.5px;font-weight:700;margin-bottom:3px}
.adv .t em{font-style:normal;color:var(--ink2);font-weight:400;font-size:12px;margin-left:6px}
.adv p{margin:4px 0;font-size:13.5px}
.adv .day{font-size:12px;color:var(--ink2)}

ol.plan{margin:8px 0 0;padding-left:20px}
ol.plan li{margin:6px 0;font-size:13.5px}

.note{font-size:12px;color:var(--ink2);background:#f7f6f2;border:1px dashed var(--line);border-radius:10px;padding:10px 12px}

/* 教师看板 */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:12px 0}
.toolbar input{max-width:240px}
.statline{display:flex;gap:18px;flex-wrap:wrap;margin:12px 0}
.statline div{font-size:12px;color:var(--ink2)}
.statline b{display:block;font-size:20px;color:var(--ink);font-variant-numeric:tabular-nums}
.dist{display:flex;gap:6px;align-items:flex-end;height:70px;margin:10px 0}
.dist .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:3px}
.dist .col i{display:block;width:100%;background:var(--accent2);border-radius:5px 5px 0 0;min-height:3px}
.dist .col span{font-size:10px;color:var(--ink2)}
.hardlist{display:flex;gap:6px;flex-wrap:wrap}
.hardlist span{font-size:12px;background:#fbe9e5;color:#8f3626;padding:3px 9px;border-radius:8px}
.copybox{display:flex;gap:8px;align-items:center;margin-top:6px}
.copybox input{font-size:12px;padding:8px 10px}
.hidden{display:none!important}
.spin{display:inline-block;width:14px;height:14px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:sp .8s linear infinite;vertical-align:-2px}
@keyframes sp{to{transform:rotate(360deg)}}
@media(max-width:420px){
  .seccards{grid-template-columns:1fr;}
  .qid{width:32px;flex-basis:32px}
  .opts button{width:37px;height:37px}
}
@media print{
  .hdr,.foot,.noprint{display:none!important}
  body{background:#fff}
  .wrap{padding-bottom:0;max-width:none}
  .card{break-inside:avoid;border-color:#ddd}
}