:root{--green:#16a34a;--red:#dc2626;--orange:#d97706;--ink:#111827;--grey:#6b7280;}
*{box-sizing:border-box}
body{margin:0;background:#f5f6f8;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;line-height:1.7}
.wrap{max-width:980px;margin:0 auto;padding:22px 16px 60px}
h1{font-size:26px;margin:6px 0 4px}
.sub{color:var(--grey);font-size:14px;margin-bottom:14px}
/* 筛选栏：桌面一行；手机三列并排 + 搜索独占一行 */
.bar{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:12px 14px;margin-bottom:16px;display:grid;grid-template-columns:auto auto auto minmax(150px,1fr) auto;gap:10px 14px;align-items:center;position:sticky;top:0;z-index:5}
.bar .f{display:flex;align-items:center;gap:6px;min-width:0}
.bar .f label{font-size:14px;color:var(--grey);white-space:nowrap}
select{font-size:14px;padding:6px 10px;border:1px solid #d1d5db;border-radius:8px;background:#fff;min-width:0}
.bar .f select,.bar .f input{flex:1;width:100%}
.bar input[type=search]{font-size:14px;padding:6px 10px;border:1px solid #d1d5db;border-radius:8px;background:#fff;-webkit-appearance:none}
.stat{font-size:14px;color:var(--grey);white-space:nowrap;text-align:right}
@media(max-width:640px){
  .bar{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 10px;padding:10px 12px}
  .bar .f{flex-direction:column;align-items:stretch;gap:2px}
  .bar .f label{font-size:12px}
  .bar .f.grow{grid-column:1/-1;flex-direction:row;align-items:center;gap:6px}
  .bar select,.bar input[type=search]{font-size:13px;padding:6px 8px}
  .stat{grid-column:1/-1;text-align:right}
}
.rec{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:18px 20px 24px;margin-bottom:22px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.rec header{display:flex;align-items:center;gap:12px;border-bottom:1px solid #f0f1f3;padding-bottom:10px}
.rec h2{font-size:19px;margin:0}
.badge{background:var(--orange);color:#fff;border-radius:999px;padding:2px 12px;font-size:13px;font-weight:700}
.result{font-weight:600;margin:10px 0 6px}
.pics{display:flex;gap:14px;flex-wrap:wrap;margin:12px 0 8px}
.pics figure{margin:0;flex:1 1 320px}
.pics img{width:100%;border:1px solid #e5e7eb;border-radius:10px;cursor:zoom-in;display:block;background:#fff}
figcaption{text-align:center;font-size:13px;color:var(--grey);margin-top:6px}
img.zoom{position:fixed;inset:2% 4%;width:92%;height:96%;object-fit:contain;background:#000;z-index:99;cursor:zoom-out;border-radius:8px;padding:8px}
h3{font-size:16px;margin:22px 0 8px;padding-left:10px;border-left:4px solid var(--green)}
h4{font-size:14.5px;margin:14px 0 4px}
table{width:100%;border-collapse:collapse;font-size:13.5px;margin:6px 0 10px}
th,td{border:1px solid #e5e7eb;padding:6px 8px;text-align:left}
th{background:#f9fafb}
td.bad{color:var(--red);font-weight:600} td.part{color:var(--orange);font-weight:600}
.wrong,.know{border-left:3px solid #f0f1f3;padding-left:12px;margin:10px 0}
.wrong h4{color:var(--red)} .know h4{color:var(--ink)}
p{margin:4px 0} .tiny{color:var(--grey);font-size:12.5px}
.var{border:1px dashed #d1d5db;border-radius:10px;padding:10px 12px;margin:10px 0}
.vtitle{font-weight:700;font-size:14px;margin-bottom:4px}
.vq{font-size:15px}
.ans{color:var(--green);font-weight:700}
.tog{margin-top:8px;font-size:13px;padding:5px 14px;border-radius:999px;border:1px solid var(--green);background:#fff;color:var(--green);cursor:pointer}
.tog.on{background:var(--green);color:#fff}
.note{font-size:12.5px;color:var(--grey);margin-top:4px}
ol{padding-left:22px}

/* ===== 站点外壳：登录页 / 集合页 ===== */
body.lock{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:#f5f6f8;font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;color:#111827}
body.unlocked{display:block}
.gate{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:28px 26px 22px;width:min(92vw,380px);box-shadow:0 8px 28px rgba(0,0,0,.06);margin:auto}
.gate h1{font-size:22px;margin:0 0 6px}
.gate p.sub{color:#6b7280;font-size:13.5px;margin:0 0 18px;line-height:1.6}
.gate label{display:block;font-size:13px;color:#6b7280;margin:10px 0 4px}
.gate input{width:100%;font-size:16px;padding:10px 12px;border:1px solid #d1d5db;border-radius:10px;background:#fff}
.gate button{width:100%;margin-top:16px;font-size:16px;font-weight:700;padding:11px;border:0;border-radius:10px;background:#16a34a;color:#fff;cursor:pointer}
.gate button:disabled{opacity:.6;cursor:default}
.err{color:#dc2626;font-size:13px;min-height:18px;margin-top:10px}
.gate .foot{color:#6b7280;font-size:12px;margin-top:14px;line-height:1.6}
iframe{display:none;position:fixed;inset:0;width:100%;height:100%;border:0;background:#f5f6f8}
.wrap{max-width:980px;margin:0 auto;padding:22px 16px 60px}
.shellhead{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.shellhead button{margin-left:auto;font-size:13px;padding:5px 14px;border-radius:999px;border:1px solid #d1d5db;background:#fff;color:#6b7280;cursor:pointer}
/* 记录卡片：默认只显示 日期/正确率 + 一句话摘要，详细错因默认折叠 */
.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:14px 16px;margin:0 0 14px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.card:hover{border-color:#16a34a}
.card a.clink{display:block;text-decoration:none;color:inherit}
.card .t{display:flex;align-items:center;gap:10px}
.card h3{margin:0;font-size:17px;border:0;padding:0}
.card .acc{font-size:13px;font-weight:700;color:#fff;border-radius:999px;padding:2px 12px;margin-left:auto}
.card .sum{margin:6px 0 0;font-size:13.5px;color:#374151}
.card .go{margin-top:8px;font-size:13px;font-weight:700;color:#16a34a}
.card .more{margin-top:10px;border-top:1px dashed #eef0f3;padding-top:8px}
.card .more summary{cursor:pointer;font-size:13px;font-weight:600;color:#16a34a;list-style:none}
.card .more summary::-webkit-details-marker{display:none}
.card .more summary::before{content:"▸ "}
.card .more[open] summary::before{content:"▾ "}
.card .more p{margin:6px 0 0;font-size:12.5px;color:#6b7280;line-height:1.6}

.card .hit{font-size:12.5px;color:#6b7280;margin:8px 0 0;padding-top:6px;border-top:1px dashed #e5e7eb;line-height:1.6;overflow-wrap:anywhere}