/* ====== 176 汉字字源演变 · 甲骨刻辞：陶土棕 + 骨白 ====== */
.tsk.cco{
  --tsk-bg:#f1e7d6;
  --tsk-card:#faf4e8;
  --tsk-card-2:#f5ecdb;
  --tsk-ink:#3a2c1c;
  --tsk-sub:#7a674c;
  --tsk-faint:#a3906f;
  --tsk-line:#ddcdae;
  --tsk-line-2:#eadfc6;
  --tsk-brand:#9c5f26;
  --tsk-brand-2:#7c4a1d;
  --tsk-brand-soft:#f0e0c8;
  --tsk-brand-ink:#7c4a1d;
  --tsk-bone:#fffdf6;
  --tsk-crack:#b3542e;
  --tsk-crack-soft:#f6e3d6;
  --tsk-ok:#4d7a3a;
  --tsk-ok-soft:#e8efdd;
  background:
    radial-gradient(720px 320px at 98% -10%, rgba(156,95,38,.10), transparent 60%),
    radial-gradient(480px 260px at -4% 8%, rgba(179,84,46,.07), transparent 58%),
    var(--tsk-bg);
}
:root[data-theme="dark"] .tsk.cco{
  --tsk-bg:#191410;
  --tsk-card:#241d15;
  --tsk-card-2:#2c241a;
  --tsk-ink:#f2e8d5;
  --tsk-sub:#c3b494;
  --tsk-faint:#8f8168;
  --tsk-line:#3d3323;
  --tsk-line-2:#332b1e;
  --tsk-brand:#d99a5b;
  --tsk-brand-2:#e8b57e;
  --tsk-brand-soft:rgba(217,154,91,.14);
  --tsk-brand-ink:#e8b57e;
  --tsk-bone:#2c241a;
  --tsk-crack:#e08a5f;
  --tsk-crack-soft:rgba(224,138,95,.13);
  --tsk-ok:#9ccb84;
  --tsk-ok-soft:rgba(156,203,132,.12);
}
.cco-hero{display:grid;grid-template-columns:minmax(0,1fr) 394px;gap:30px;padding:30px 0 24px;align-items:stretch;}
.cco-hero-l{display:flex;flex-direction:column;}
.cco-hero-l>.tsk-hs{flex:1 1 auto;}
.cco-hero-l .tsk-h1 b{color:var(--tsk-brand-ink);}

/* 表单卡：骨版刻辞 */
.cco-form{align-self:start;background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:14px;box-shadow:var(--tsk-shadow);overflow:hidden;position:relative;}
.cco-form::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:repeating-linear-gradient(90deg,var(--tsk-brand) 0 14px,transparent 14px 20px,var(--tsk-crack) 20px 30px,transparent 30px 36px);}
.cco-form-top{display:flex;justify-content:space-between;align-items:center;padding:16px 20px 12px;border-bottom:1px dashed var(--tsk-line);}
.cco-form-top span{font-size:12.5px;font-weight:800;color:var(--tsk-ink);letter-spacing:.04em;}
.cco-form-top i{font-style:normal;font:700 10px/1 var(--tsk-num);letter-spacing:.16em;color:var(--tsk-faint);}
.cco-form-body{padding:6px 20px 18px;}
.cco-form-body label{display:block;margin:12px 0 6px;font-size:11.5px;font-weight:800;color:var(--tsk-sub);}
.cco-form-body input{width:100%;height:44px;padding:0 14px;border:1px solid var(--tsk-line);border-radius:9px;background:var(--tsk-bone);color:var(--tsk-ink);font:700 18px/44px var(--tsk-font);outline:none;transition:border-color .16s,box-shadow .16s;}
.cco-form-body input:focus{border-color:var(--tsk-brand);box-shadow:0 0 0 3px var(--tsk-brand-soft);}
.cco-err{margin:8px 0 0;padding:8px 11px;border-radius:8px;background:var(--tsk-crack-soft);border:1px solid rgba(179,84,46,.3);font-size:11.5px;line-height:1.6;color:var(--tsk-crack);font-weight:700;}
.cco-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px;}
.cco-chip{min-width:34px;height:34px;padding:0 6px;border:1px solid var(--tsk-line);border-radius:8px;background:var(--tsk-bone);color:var(--tsk-ink);font:700 15px/32px var(--tsk-font);cursor:pointer;transition:all .14s;}
.cco-chip:hover{border-color:var(--tsk-brand);background:var(--tsk-brand-soft);color:var(--tsk-brand-ink);transform:translateY(-1px);}
.cco-form .tsk-btn-main{width:100%;margin-top:16px;background:linear-gradient(135deg,var(--tsk-brand),var(--tsk-crack));color:#fff;}
:root[data-theme="dark"] .cco-form .tsk-btn-main{color:#1c150c;}
.cco-form-foot{margin-top:10px;font-size:10.5px;line-height:1.7;color:var(--tsk-faint);}

/* 结果 */
.cco-result{margin:4px 0 26px;background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:16px;box-shadow:var(--tsk-shadow);padding:22px 24px;}
.cco-res-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.cco-res-char{width:74px;height:74px;border-radius:12px;background:var(--tsk-brand-soft);border:1px solid rgba(156,95,38,.3);color:var(--tsk-brand-ink);font:800 44px/74px var(--tsk-font);text-align:center;}
.cco-res-meta{flex:1;min-width:140px;}
.cco-res-meta b{display:block;font-size:16px;font-weight:800;color:var(--tsk-ink);}
.cco-res-meta span{display:inline-block;margin-top:5px;padding:2px 10px;border-radius:99px;background:var(--tsk-ok-soft);color:var(--tsk-ok);font-size:11px;font-weight:800;}
.cco-res-acts{display:flex;gap:8px;}
.cco-stages{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:18px;}
.cco-stage{background:var(--tsk-bone);border:1px solid var(--tsk-line);border-radius:11px;padding:13px 10px 11px;text-align:center;}
.cco-stage>i{display:block;font-style:normal;font-size:10.5px;font-weight:800;letter-spacing:.08em;color:var(--tsk-brand-ink);}
.cco-stage .cco-g{width:72px;height:72px;margin:6px auto 2px;display:block;color:var(--tsk-ink);}
.cco-stage .cco-glyph{font:700 52px/72px var(--tsk-font);color:var(--tsk-ink);display:block;height:72px;}
.cco-stage .cco-li{font-family:"KaiTi","STKaiti","FangSong",serif;}
.cco-stage>p{font-size:10.5px;line-height:1.6;color:var(--tsk-sub);margin-top:4px;}
.cco-mean{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px;}
.cco-mean-card{background:var(--tsk-card-2);border:1px solid var(--tsk-line-2);border-radius:10px;padding:12px 15px;}
.cco-mean-card span{display:block;font-size:11px;font-weight:800;color:var(--tsk-faint);}
.cco-mean-card b{display:block;margin-top:4px;font-size:13.5px;font-weight:700;color:var(--tsk-ink);line-height:1.7;}
.cco-note{margin-top:12px;padding:11px 14px;border-radius:9px;background:var(--tsk-brand-soft);border:1px solid rgba(156,95,38,.22);font-size:12px;line-height:1.8;color:var(--tsk-sub);}
.cco-note b{color:var(--tsk-brand-ink);}

/* 表格与列表 */
.cco-scroll{overflow-x:auto;border-radius:11px;box-shadow:var(--tsk-shadow-sm);}
.cco-table{width:100%;min-width:600px;border-collapse:collapse;background:var(--tsk-card);}
.cco-table.is-wide{border:1px solid var(--tsk-line);}
.cco-table th,.cco-table td{padding:10px 14px;font-size:12.5px;line-height:1.7;border-bottom:1px solid var(--tsk-line-2);text-align:left;}
.cco-table thead th{background:var(--tsk-card-2);font-size:11px;font-weight:800;color:var(--tsk-brand-ink);letter-spacing:.04em;}
.cco-table tbody tr:last-child td{border-bottom:0;}
.cco-table tbody tr:hover td{background:var(--tsk-card-2);}
.cco-strong{font-weight:800;color:var(--tsk-ink);}
.cco-tag{display:inline-block;padding:2px 9px;border-radius:99px;background:var(--tsk-brand-soft);color:var(--tsk-brand-ink);font-size:11.5px;font-weight:800;}

.cco-lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;}
.cco-lib-chip{display:flex;align-items:center;gap:9px;padding:9px 11px;border:1px solid var(--tsk-line);border-radius:10px;background:var(--tsk-card);cursor:pointer;text-align:left;transition:all .14s;}
.cco-lib-chip:hover{border-color:var(--tsk-brand);background:var(--tsk-brand-soft);transform:translateY(-1px);}
.cco-lib-chip b{font-size:20px;font-weight:800;color:var(--tsk-ink);}
.cco-lib-chip small{font-size:10.5px;line-height:1.5;color:var(--tsk-faint);}

.cco-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(288px,1fr));gap:8px;}
.cco-list li{position:relative;padding:12px 15px 12px 34px;background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:9px;font-size:12.5px;line-height:1.78;color:var(--tsk-sub);}
.cco-list li::before{content:"";position:absolute;left:14px;top:18px;width:9px;height:9px;border-radius:2px;background:var(--tsk-crack);transform:rotate(45deg);}
.cco-list.is-note li::before{background:var(--tsk-brand);}

@media (max-width:900px){
  .cco-hero{grid-template-columns:1fr;gap:22px;}
  .cco-form{align-self:stretch;}
  .cco-stages{grid-template-columns:repeat(3,1fr);}
  .cco-mean{grid-template-columns:1fr;}
}
@media (max-width:560px){
  .cco-stages{grid-template-columns:repeat(2,1fr);}
}
@media print{
  .tsk.cco{background:#fff;}
  .cco-hero,.tsk-sec,.tsk-hs,.tskb,.tsk-crumb,.cco-res-acts,.cco-form-foot{display:none !important;}
  .cco-result{box-shadow:none;border-color:#ccc;}
}