/* テストの種類と書き方。style.css と flow.css の上に重ねる（紫は AI の印） */
.subh { margin: 20px 0 10px; font-size: 15px; }
.whygrid, .tipgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tipgrid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 12px; }
.wy, .tp { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; gap: 5px; }
.wy b, .tp b { font-size: 14.5px; }
.wy p, .tp p { margin: 0; font-size: 12.5px; color: var(--ink2); }
.wy a, .tp a { font-size: 12px; color: #1d4ed8; margin-top: auto; }

/* 種類（ピラミッドとトロフィー） */
.kmode { display: inline-flex; background: var(--line2); border-radius: 999px; padding: 3px; margin-bottom: 10px; }
.kmode button { appearance: none; border: 0; background: transparent; font: inherit; font-size: 13px; font-weight: 700; padding: 6px 16px; border-radius: 999px; cursor: pointer; color: var(--ink2); }
.kmode button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.klayout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; align-items: start; }
.kshape { padding: 16px; display: grid; gap: 10px; }
.kstack { display: grid; gap: 6px; justify-items: center; }
.kl { --c: #64748b; appearance: none; font: inherit; font-size: 14px; font-weight: 700; color: color-mix(in srgb, var(--c) 80%, black); background: color-mix(in srgb, var(--c) 14%, white); border: 1.5px solid color-mix(in srgb, var(--c) 40%, white); border-radius: 10px; padding: 10px 8px; cursor: pointer; min-width: 120px; transition: background-color .2s, border-color .2s; }
.kl:hover { background: color-mix(in srgb, var(--c) 22%, white); }
.kl[aria-pressed="true"] { background: var(--c); border-color: var(--c); color: #fff; }
.k-unit { --c: #16a34a; } .k-int { --c: #2563eb; } .k-e2e { --c: #d97706; } .k-manual { --c: #db2777; } .k-static { --c: #64748b; }
.knote { margin: 0; font-size: 12px; color: var(--muted); text-align: center; }
.kdetail { padding: 14px 16px; display: grid; gap: 8px; }
.kdetail h3 { margin: 0; font-size: 17px; }
.kdetail h3 small { font-family: var(--latin); font-size: 12px; color: var(--muted); font-weight: 500; margin-left: 8px; }
.kdetail p { margin: 0; font-size: 13.5px; color: var(--ink2); }
.kdetail .trw { background: var(--line2); border-radius: 8px; padding: 7px 10px; font-size: 13px; }
.kdl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 12px; margin: 0; font-size: 13px; }
.kdl dt { font-weight: 700; color: var(--muted); font-size: 12px; }
.kdl dd { margin: 0; color: var(--ink2); }

/* 書き方 */
.codegrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.codegrid .card { padding: 13px 15px; min-width: 0; }
.codegrid h3 { margin: 0 0 8px; font-size: 14px; }
.code { margin: 0; font-family: var(--latin); font-size: 12px; line-height: 1.6; background: #0f172a; color: #e2e8f0; border-radius: 10px; padding: 10px 12px; overflow-x: auto; white-space: pre; }
.cnote { margin: 8px 0 0; font-size: 12px; color: var(--ink2); }
.cnote code, .fhead code { font-family: var(--latin); font-size: 12px; background: var(--line2); border-radius: 5px; padding: 1px 5px; }

/* 境界値の練習 */
.bdcard { padding: 16px; display: grid; gap: 12px; }
.bdspec { font-size: 13.5px; }
.bdspec b { display: inline-block; font-size: 12px; color: #fff; background: var(--ink); border-radius: 6px; padding: 1px 8px; margin-right: 8px; }
.bdline { position: relative; padding-top: 30px; }
.bdsegs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; }
.bdseg { --c: #64748b; border-radius: 8px; padding: 8px 6px; text-align: center; background: color-mix(in srgb, var(--c) 14%, white); color: color-mix(in srgb, var(--c) 80%, black); min-width: 0; }
.bdseg b { display: block; font-size: 13px; }
.bdseg small { font-family: var(--latin); font-size: 11px; }
.s-free { --c: #16a34a; } .s-child { --c: #2563eb; } .s-adult { --c: #d97706; } .s-senior { --c: #7c3aed; }
.bdmarks { position: absolute; left: 0; right: 0; top: 0; height: 26px; }
.bdm { position: absolute; top: 0; transform: translateX(-50%); font-family: var(--latin); font-size: 11px; font-weight: 600; border-radius: 999px; padding: 1px 6px; background: #dcfce7; color: #166534; border: 1px solid #86efac; white-space: nowrap; }
.bdm.ng { background: #dc2626; color: #fff; border-color: #dc2626; z-index: 1; }
.bdctrl { display: grid; gap: 8px; }
.bdpicks { display: flex; flex-wrap: wrap; gap: 6px; }
.bdpicks button, .bdbtns button, .bdin button { appearance: none; font: inherit; font-size: 13px; font-weight: 700; border: 1px solid var(--line); background: var(--paper); color: var(--ink); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.bdpicks button[aria-pressed="true"] { background: var(--line2); color: var(--muted); }
.bdin { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; font-weight: 700; }
.bdin input { width: 84px; font: inherit; font-size: 14px; border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; }
.bdin button.primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.bdbtns { display: flex; gap: 8px; flex-wrap: wrap; }
.bdbtns button.ghost { color: var(--ink2); }
.bdpicks button:focus-visible, .bdbtns button:focus-visible, .bdin button:focus-visible, .bdin input:focus-visible, .kl:focus-visible, .kmode button:focus-visible, .mlist input:focus-visible, .ckreset:focus-visible { outline: 3px solid #2563eb; outline-offset: 2px; }
.bdstat { font-size: 13px; color: var(--ink2); }
.bdstat b { font-family: var(--latin); color: var(--ink); }
.bdstat .hint { display: block; margin-top: 4px; color: #92400e; }
.bdfound { background: #fef2f2; border: 1px solid #fecaca; border-radius: 10px; padding: 10px 12px; font-size: 13.5px; color: #7f1d1d; }
.bdfound[hidden] { display: none; }
.bdfound b { color: #b91c1c; margin-right: 4px; }
.bdfound p { margin: 6px 0; }
.bdfound code { display: inline-block; font-family: var(--latin); font-size: 12.5px; background: #fff; border: 1px solid #fecaca; border-radius: 6px; padding: 2px 8px; }
.bdwrap { overflow-x: auto; }
.bdtable { width: 100%; border-collapse: collapse; font-size: 13px; }
.bdtable th, .bdtable td { padding: 6px 8px; border-bottom: 1px solid var(--line2); text-align: left; white-space: nowrap; }
.bdtable th { font-size: 11.5px; color: var(--muted); }
.bdtable tr.ng td { background: #fef2f2; color: #7f1d1d; }
.bdtable td.r { font-weight: 700; text-align: center; }
.bdtable th:last-child { text-align: center; }
.bdtable td.empty { white-space: normal; color: var(--muted); }

/* 同値分割・代役・カバレッジ・CI */
.ptcard { padding: 6px 12px; overflow-x: auto; }
.pttable { width: 100%; border-collapse: collapse; font-size: 13px; }
.pttable th, .pttable td { padding: 8px; border-bottom: 1px solid var(--line2); text-align: left; }
.pttable th { font-size: 11.5px; color: var(--muted); }
.pttable td:nth-child(3), .pttable td:nth-child(4) { font-family: var(--latin); }
.dbgrid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.dbc, .fxc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 11px 13px; display: flex; flex-direction: column; gap: 5px; }
.dbc h3 { margin: 0; font-size: 14.5px; }
.dbc h3 small { font-family: var(--latin); font-size: 11px; color: var(--muted); font-weight: 500; margin-left: 6px; }
.dbc p, .fxc p { margin: 0; font-size: 12.5px; color: var(--ink2); }
.dbc .an { margin-top: auto; font-size: 12px; color: var(--muted); }
.fxgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.fxc b { font-size: 14px; }
.cvgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cvgrid .card { padding: 13px 15px; }
.cvgrid p { margin: 0; font-size: 13px; color: var(--ink2); }
.cvex b { display: block; font-size: 14px; margin-bottom: 4px; }
.cigrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.cigrid .card { padding: 13px 15px; }
.cigrid h3 { margin: 0 0 6px; font-size: 14.5px; }
.cigrid p, .cigrid ul { margin: 0; font-size: 12.5px; color: var(--ink2); }
.cigrid ul { padding-left: 1.1em; }
#ci .fhead a { color: #1d4ed8; }

/* AI 時代 */
.aigrid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.aic { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 13px 15px; display: flex; flex-direction: column; gap: 7px; }
.aic h3 { margin: 0; font-size: 15px; display: flex; gap: 8px; align-items: center; }
.aitag { font-style: normal; font-family: var(--latin); font-size: 10.5px; font-weight: 600; background: #ede9fe; color: #5b21b6; border-radius: 5px; padding: 1px 5px; flex: none; }
.aic p { margin: 0; font-size: 12.5px; color: var(--ink2); }
.ail { display: flex; flex-direction: column; gap: 2px; }
.ail a { font-size: 12px; color: #1d4ed8; }
.ais { margin-top: auto; font-size: 11.5px; color: var(--muted); }
.ais a { color: #1d4ed8; }

/* チェックリスト */
.mlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.mlist label { display: flex; gap: 10px; align-items: flex-start; padding: 7px 4px; border-radius: 8px; cursor: pointer; font-size: 13.5px; }
.mlist label:hover { background: var(--line2); }
.mlist input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--k-test); flex: none; }
.mlist input:checked + span { color: var(--muted); text-decoration: line-through; }
.ckfoot { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.mcount { font-size: 12.5px; font-weight: 700; color: var(--k-test); }
.ckreset { appearance: none; border: 1px solid var(--line); background: var(--paper); border-radius: 999px; padding: 5px 12px; font: inherit; font-size: 12.5px; font-weight: 700; color: var(--ink2); cursor: pointer; }
#mistakes .src { margin-top: 14px; }

.tdnote { margin-top: 10px; display: flex; flex-direction: column; gap: 4px; padding: 13px 15px; }
.tdnote b { font-size: 14px; }
.tdnote p { margin: 0; font-size: 13px; color: var(--ink2); }
.tdnote a, .tdsrc a { color: #1d4ed8; }
.tdhint { align-self: flex-start; font-size: 11px; font-weight: 700; color: var(--ink2); background: var(--line2); border-radius: 6px; padding: 1px 7px; }
.tdsrc { margin: 8px 0 0; font-size: 12px; color: var(--muted); }
@media (max-width: 1100px) {
  .tipgrid, .dbgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .codegrid, .klayout { grid-template-columns: 1fr; }
  .aigrid3, .cigrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .whygrid, .tipgrid, .dbgrid, .fxgrid, .cvgrid, .cigrid, .aigrid3 { grid-template-columns: 1fr; }
  .bdseg b { font-size: 12px; }
  .bdseg small { font-size: 10px; }
  .kl { min-width: 96px; font-size: 13px; }
  .bdtable th, .bdtable td { white-space: normal; padding: 6px 5px; }
}
@media (prefers-reduced-motion: reduce) { .kl { transition: none; } }