/* 资料页共用样式 */
:root{
  --bg:#0b0f14;--card:#131a22;--card2:#0f151c;--line:#1f2a36;
  --txt:#e6edf5;--dim:#8a9bb0;--dim2:#5f7185;
  --en:#4ade80;--code:#60a5fa;--draw:#f472b6;--warn:#fbbf24;--bad:#f87171;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(130% 90% at 50% -10%,#17222f 0%,var(--bg) 58%) fixed;
  color:var(--txt);
  font:400 16px/1.68 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  padding-bottom:calc(48px + env(safe-area-inset-bottom));
  -webkit-text-size-adjust:100%;
}
a{color:#7dd3fc;text-decoration:none}

.doc-h{
  position:sticky;top:0;z-index:9;display:flex;align-items:center;gap:12px;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;
  background:rgba(11,15,20,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.doc-h a{color:var(--dim);font-size:14px;font-weight:600;white-space:nowrap}
.doc-h b{font-size:15px;font-weight:700;letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-h .back{margin-left:auto;font-size:12px;color:var(--dim2)}

.doc{max-width:760px;margin:0 auto;padding:16px 14px 8px}

h2{
  font-size:17.5px;margin:30px 0 10px;letter-spacing:-.01em;
  padding-left:11px;border-left:3px solid var(--en);
}
h2:first-child{margin-top:8px}
h3{font-size:14.5px;margin:20px 0 6px;color:#c3d0e0;font-weight:650}
p{margin:9px 0;font-size:14.5px}
ul,ol{margin:9px 0;padding-left:22px;font-size:14.5px}
li{margin:6px 0}
li::marker{color:var(--dim2)}
strong{color:#fff;font-weight:650}

code{
  background:#18222d;padding:1.5px 5px;border-radius:5px;
  font-size:12.5px;font-family:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;color:#a5d6ff;
}
pre{
  background:#0d141b;border:1px solid var(--line);border-radius:12px;
  padding:13px;overflow-x:auto;font-size:12.5px;line-height:1.65;margin:10px 0;
}
pre code{background:none;padding:0;color:#cfe3f7;font-size:12.5px}

.tbl{width:100%;border-collapse:collapse;font-size:13px;margin:10px 0}
.tbl th,.tbl td{padding:8px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{color:var(--dim);font-size:11.5px;font-weight:600;white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{color:#dbe7f3}

.note{border-radius:12px;padding:12px 14px;margin:14px 0;font-size:13.5px;border:1px solid;line-height:1.6}
.note b{display:block;margin-bottom:4px;font-size:13.5px}
.note.warn{background:#1e1a12;border-color:#4a3d1f;color:#f3dfa8}
.note.info{background:#101a24;border-color:#24384a;color:#bcd3e8}
.note.ok{background:#101e16;border-color:#25452f;color:#bfe8cf}
.note.bad{background:#20141a;border-color:#4a2530;color:#f3c3cd}

details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:11px 0}
summary{cursor:pointer;font-weight:650;font-size:14px;color:var(--txt);list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"▸ ";color:var(--dim2)}
details[open] summary::before{content:"▾ "}
details[open] summary{color:var(--en);margin-bottom:8px}

.tag{
  display:inline-block;font-size:10.5px;padding:2px 8px;border-radius:999px;
  background:#16202b;border:1px solid var(--line);color:var(--dim);margin-right:6px;vertical-align:2px;
}
.tag.en{color:var(--en);border-color:#25452f}
.tag.code{color:var(--code);border-color:#23374a}
.tag.draw{color:var(--draw);border-color:#45223a}

/* 真题进度条 */
.pgrid{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}
.pbtn{
  font:inherit;font-size:12px;padding:7px 11px;border-radius:9px;cursor:pointer;
  background:var(--card2);border:1px solid var(--line);color:var(--dim);
  font-variant-numeric:tabular-nums;transition:all .15s;
}
.pbtn:active{transform:scale(.96)}
.pbtn.on{background:linear-gradient(160deg,#16241d,#121a22);border-color:#2c4a37;color:var(--en);font-weight:650}
.pmeta{display:flex;align-items:baseline;gap:10px;font-size:13px;color:var(--dim);margin:10px 0 4px}
.pmeta b{font-size:19px;color:var(--en);font-variant-numeric:tabular-nums}
.pbar{height:6px;border-radius:999px;background:#1a2431;overflow:hidden;margin-bottom:6px}
.pbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#4ade80,#22d3ee);border-radius:999px;transition:width .4s}

/* 词表 */
.words{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.words span{
  font-size:12px;padding:4px 9px;border-radius:8px;background:var(--card2);
  border:1px solid var(--line);color:#cfe3f7;font-family:ui-monospace,Consolas,monospace;
}

/* 步骤条 */
.steps-l{counter-reset:s;list-style:none;padding-left:0}
.steps-l li{counter-increment:s;position:relative;padding-left:32px;margin:10px 0}
.steps-l li::before{
  content:counter(s);position:absolute;left:0;top:1px;
  width:22px;height:22px;border-radius:7px;background:#16202b;border:1px solid var(--line);
  color:var(--dim);font-size:11.5px;font-weight:700;display:grid;place-items:center;
}

hr{border:0;border-top:1px solid var(--line);margin:26px 0}
.foot-l{display:flex;gap:10px;flex-wrap:wrap;margin:30px 0 10px}
.foot-l a{
  flex:1;min-width:140px;text-align:center;padding:12px;border-radius:11px;
  border:1px solid var(--line);background:var(--card);color:var(--dim);font-size:13px;
}
@media (max-width:380px){.words span{font-size:11px;padding:3px 7px}}