/* 性能とスケール。style.css と flow.css の上に重ねる（当たりは緑・外れは橙・古い答えと危ない所は赤、AI は紫） */
:root {
  --p-hit: #059669;
  --p-hit-soft: #ecfdf5;
  --p-miss: #b45309;
  --p-miss-soft: #fffbeb;
  --p-bad: #b91c1c;
  --p-bad-soft: #fef2f2;
  --p-ai: #6d28d9;
  --p-ai-soft: #ede9fe;
  --p-code: #0f172a;
}
.subh { margin: 22px 0 10px; font-size: 15px; }
.hint { display: inline-block; font-size: 11px; font-weight: 700; line-height: 1.5; color: #475569; background: #f8fafc; border: 1px dashed #94a3b8; border-radius: 999px; padding: 0 8px; white-space: nowrap; vertical-align: 2px; margin-left: 6px; }
.sref { margin: 0; font-size: 11.5px; color: var(--muted); }
.sref a, .jl a, .fhead p a, .maplinks a { color: #1d4ed8; text-underline-offset: 2px; }
.jl { margin: 0; font-size: 12.5px; }
.inl { font-weight: 700; }
.code { margin: 0; font-family: var(--latin); font-size: 12px; line-height: 1.6; background: var(--p-code); color: #e2e8f0; border-radius: 10px; padding: 9px 12px; white-space: pre-wrap; overflow-wrap: anywhere; }
.code code { font: inherit; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; min-width: 0; }
.card h3 { margin: 0 0 8px; font-size: 15px; }
.lab { display: block; font-size: 12px; font-weight: 700; color: var(--ink2); margin-bottom: 5px; }
.mk { display: inline-block; font-size: 11px; font-weight: 700; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 0 6px; margin-left: 6px; }
.seg { display: flex; flex-wrap: wrap; gap: 4px; }
.seg button { appearance: none; font: inherit; font-size: 12.5px; font-weight: 700; border: 1px solid var(--line); background: var(--paper); color: var(--ink2); border-radius: 8px; padding: 5px 11px; cursor: pointer; min-height: 34px; }
.seg button:hover { border-color: #94a3b8; color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.hp { margin: 0; font-size: 12.5px; color: var(--ink2); display: flex; gap: 2px; align-items: baseline; flex-wrap: wrap; }
.hp .hint { margin: 0 6px 0 0; }

/* ① 測る */
.pchead { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.pchead b { font-size: 14px; }
.pcplot { position: relative; height: 180px; border-bottom: 1.5px solid var(--ink2); border-left: 1.5px solid var(--line); margin: 0 0 10px 30px; }
.pcy { position: absolute; left: -30px; width: 26px; text-align: right; font-family: var(--latin); font-size: 11px; color: var(--muted); }
.pcy-top { top: -2px; }
.pcy-bot { bottom: -7px; }
.pcbars { position: absolute; inset: 0; display: flex; align-items: flex-end; gap: 1px; }
.pcbars i { flex: 1; min-width: 0; background: #cbd5e1; border-radius: 2px 2px 0 0; transition: background-color .2s; }
.pcbars i.over { background: #f59e0b; }
.pcline { position: absolute; left: 0; right: 0; border-top: 2px dashed var(--ink); transition: bottom .35s ease; }
.pcline span { position: absolute; left: 6px; bottom: 3px; font-size: 12px; font-weight: 700; background: rgba(255, 255, 255, .92); border-radius: 6px; padding: 1px 7px; white-space: nowrap; }
.pcsay { margin: 0 0 8px; font-size: 13.5px; min-height: 3.2em; }
.wgrid4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.wcard, .tcard, .layer, .rcard, .acc, .qcard, .vhcard, .sccard, .dbs, .lt, .ltool, .tip, .aicard { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 13px 15px; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.wcard h3, .tcard h3, .layer h3, .rcard h3, .acc h3, .qcard h3, .vhcard h3, .sccard h3, .dbs h3, .lt h3, .ltool h3, .tip h3, .aicard h3 { margin: 0; font-size: 15px; }
.wcard p, .tcard p, .layer p, .rcard p, .acc p, .qcard p, .vhcard p, .sccard p, .dbs p, .lt p, .ltool p, .tip p, .aicard p { margin: 0; font-size: 13px; color: var(--ink2); }
.wcard .sref, .tcard .sref, .layer .sref, .rcard .sref, .acc .sref, .qcard .sref, .vhcard .sref, .sccard .sref, .dbs .sref, .ltool .sref, .aicard .sref { margin-top: auto; font-size: 11.5px; color: var(--muted); }
.wnum { width: 24px; height: 24px; border-radius: 50%; background: var(--ink); color: #fff; display: grid; place-items: center; font-family: var(--latin); font-size: 12px; font-weight: 600; }
.wlook { font-size: 12.5px !important; }
.wlook b { font-size: 11px; color: var(--ink2); background: var(--line2); border-radius: 5px; padding: 1px 6px; margin-right: 6px; }
.tgrid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }

/* ② キャッシュの層 */
.layers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.laxis { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 700; color: var(--muted); }
.laxis i { flex: 1; height: 2px; background: linear-gradient(90deg, #94a3b8, #cbd5e1); position: relative; }
.laxis i::after { content: ''; position: absolute; right: -2px; top: -4px; border: 5px solid transparent; border-left: 7px solid #cbd5e1; }
.lyh { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.who { font-size: 11px; font-weight: 700; color: var(--ink2); background: var(--line2); border-radius: 999px; padding: 1px 8px; }
.lyex { font-size: 12.5px !important; }
.lyex b { font-size: 11px; color: var(--ink2); background: var(--line2); border-radius: 5px; padding: 1px 6px; margin-right: 6px; }

/* キャッシュの効き目の体験 */
.simcard { padding: 16px 18px; }
.simq { margin: 0 0 12px; font-size: 13.5px; color: var(--ink2); }
.simctrl { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px 22px; margin-bottom: 14px; }
.simchk { display: flex; gap: 8px; align-items: center; font-size: 13px; font-weight: 700; cursor: pointer; min-height: 34px; }
.simchk input { width: 18px; height: 18px; accent-color: var(--p-hit); }
.replay { appearance: none; font: inherit; font-size: 12.5px; font-weight: 700; border: 1px solid var(--line); background: var(--paper); color: var(--ink2); border-radius: 999px; padding: 6px 14px; cursor: pointer; min-height: 34px; }
.replay:hover { border-color: #94a3b8; color: var(--ink); }
.simline { list-style: none; margin: 0; padding: 0; display: flex; gap: 5px; align-items: stretch; }
.simline .cell { flex: 1; min-width: 0; border-radius: 10px; border: 1.5px solid var(--line); padding: 7px 4px; display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 12px; text-align: center; opacity: 0; transform: translateY(6px); transition: opacity .25s ease, transform .25s ease; }
.simline .cell.in { opacity: 1; transform: none; }
.simline .ct { font-family: var(--latin); font-size: 11px; color: var(--muted); }
.simline .cell b { font-size: 13px; }
.simline .cm { font-family: var(--latin); font-size: 11.5px; font-weight: 600; }
.k-miss { background: var(--p-miss-soft); border-color: #fcd34d !important; color: var(--p-miss); }
.k-hit { background: var(--p-hit-soft); border-color: #6ee7b7 !important; color: var(--p-hit); }
.k-stale { background: var(--p-bad-soft); border-color: #fca5a5 !important; color: var(--p-bad); }
.simline .chg { flex: none; width: 66px; display: flex; flex-direction: column; justify-content: center; align-items: center; font-size: 11px; font-weight: 700; color: var(--p-bad); text-align: center; line-height: 1.35; border-left: 2px dashed #fca5a5; border-right: 2px dashed #fca5a5; border-radius: 4px; opacity: 0; transition: opacity .25s ease; }
.simline .chg.in { opacity: 1; }
.simlegend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 10px 0 12px; font-size: 12px; color: var(--ink2); }
.simlegend span { display: inline-flex; align-items: center; gap: 6px; }
.simlegend i { width: 14px; height: 14px; border-radius: 4px; border: 1.5px solid; }
.lg-miss { background: var(--p-miss-soft); border-color: #fcd34d; }
.lg-hit { background: var(--p-hit-soft); border-color: #6ee7b7; }
.lg-stale { background: var(--p-bad-soft); border-color: #fca5a5; }
.simout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 12px; align-items: start; }
.simstats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.sn { background: var(--line2); border-radius: 10px; padding: 8px 10px; display: flex; flex-direction: column; gap: 1px; }
.sn span { font-size: 11.5px; font-weight: 700; color: var(--ink2); }
.sn b { font-family: var(--latin); font-size: 20px; font-weight: 600; }
.sn small { font-size: 11px; color: var(--muted); }
.sn.bad { background: var(--p-bad-soft); }
.sn.bad b { color: var(--p-bad); }
.ssay { grid-column: 1 / -1; margin: 2px 0 0; font-size: 13.5px; }
.rgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.accgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.acc { border-color: #fecaca; background: #fffdfd; }
.accfix { font-size: 12.5px !important; background: var(--p-hit-soft); border-radius: 8px; padding: 6px 9px; color: #065f46 !important; }
.accfix b { display: block; font-size: 11px; color: var(--p-hit); }

/* ③ キュー */
.qflow { list-style: none; margin: 0 0 12px; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 22px; counter-reset: q; }
.qs { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; display: flex; flex-direction: column; gap: 2px; }
.qs b { font-size: 14px; }
.qs span { font-size: 12px; color: var(--ink2); }
.qs + .qs::before { content: ''; position: absolute; left: -17px; top: 50%; width: 12px; height: 2px; background: #94a3b8; }
.qs + .qs::after { content: ''; position: absolute; left: -8px; top: calc(50% - 4px); border: 5px solid transparent; border-left: 6px solid #94a3b8; }
.qs.qmain { background: #f0f9ff; border-color: #7dd3fc; }
.qlay { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 10px; align-items: start; }
.qcodecard { display: flex; flex-direction: column; gap: 8px; }
.qcards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.maplinks { margin: 10px 0 0; display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; font-size: 13px; }
.maplinks b { font-size: 12px; color: var(--ink2); }
.maplinks a { font-weight: 700; }

/* ④ 台数を増やす */
.vh { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 10px; }
.vhpic { display: flex; align-items: flex-end; gap: 6px; height: 46px; }
.vhpic i { display: block; background: #bfdbfe; border: 1.5px solid #60a5fa; border-radius: 6px; }
.vhpic i.s { width: 22px; height: 26px; }
.vhpic i.b { width: 40px; height: 44px; }
.vhpic span { align-self: center; color: var(--muted); font-weight: 700; padding: 0 4px; }
.scdia { display: flex; flex-direction: column; align-items: center; gap: 0; padding: 16px; margin-bottom: 10px; }
.scrow { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.scbox { display: flex; flex-direction: column; align-items: center; gap: 1px; border: 1.5px solid var(--line); border-radius: 10px; padding: 7px 14px; font-size: 13px; font-weight: 700; background: var(--paper); min-width: 96px; text-align: center; }
.scbox small { font-size: 11px; font-weight: 500; color: var(--ink2); }
.scbox.user { background: var(--line2); }
.scbox.lb { border-color: #93c5fd; background: #eff6ff; }
.scbox.app { border-color: #6ee7b7; background: var(--p-hit-soft); }
.scbox.ext { border-color: #cbd5e1; background: #f8fafc; }
.scarrow { width: 2px; height: 18px; background: #94a3b8; position: relative; margin: 2px 0 6px; }
.scarrow::after { content: ''; position: absolute; left: -4px; bottom: -6px; border: 5px solid transparent; border-top: 6px solid #94a3b8; }
.scnote { margin: 10px 0 0; font-size: 12.5px; color: var(--ink2); text-align: center; }
.scgrid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }

/* ⑤ 待ち行列 */
.mmcard { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 16px 22px; padding: 16px 18px; }
.mmctrl { display: flex; flex-direction: column; gap: 14px; }
.mmrange { display: block; }
.mmrange output { font-family: var(--latin); font-size: 13px; color: var(--ink); margin-left: 6px; }
.mmrange input { width: 100%; accent-color: var(--ink); min-height: 32px; }
.mmout { min-width: 0; }
.mmnums { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 8px; }
.mn { background: var(--line2); border-radius: 10px; padding: 8px 10px; display: flex; flex-direction: column; gap: 1px; }
.mn span { font-size: 11.5px; font-weight: 700; color: var(--ink2); }
.mn b { font-family: var(--latin); font-size: 20px; font-weight: 600; }
.mn small { font-size: 11px; color: var(--muted); }
.mn.bad { background: var(--p-bad-soft); }
.mn.bad b { color: var(--p-bad); }
.mmviz { display: grid; grid-template-columns: minmax(0, 600px) minmax(0, 1fr); gap: 8px 20px; align-items: center; }
.mmcap { display: none; margin: 0 0 4px; font-size: 11.5px; font-weight: 700; color: var(--ink2); }
.mmsvg { display: block; width: 100%; height: auto; }
.mmsvg .hot { fill: #fef2f2; }
.mmsvg .hotlab { font-size: 11px; font-weight: 700; fill: var(--p-bad); }
.mmsvg .grid { stroke: var(--line); stroke-width: 1; }
.mmsvg .tick { font-family: var(--latin); font-size: 11px; fill: var(--muted); }
.mmsvg .axl { font-size: 11.5px; font-weight: 700; fill: var(--ink2); }
.mmsvg .curve { fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linejoin: round; }
.mmsvg .guide { stroke: #94a3b8; stroke-width: 1.5; stroke-dasharray: 4 4; }
.mmsvg .dot { fill: var(--p-hit); stroke: #fff; stroke-width: 3; transition: cx .25s ease, cy .25s ease, fill .2s; }
.mmsvg .dot.bad { fill: var(--p-bad); }
.mmsvg .dotlab { font-family: var(--latin); font-size: 13px; font-weight: 600; fill: var(--ink); paint-order: stroke; stroke: #fff; stroke-width: 4px; }
.mmsay { margin: 6px 0 0; font-size: 13.5px; min-height: 3.2em; }
.mmcard > .sref { grid-column: 1 / -1; }

/* ⑥ データベースのスケール */
.dbsgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }

/* ⑦ 負荷試験 */
.ltypes { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; margin-bottom: 6px; }
.lt svg { width: 100%; height: 40px; background: #f8fafc; border-radius: 8px; }
.lt polyline { fill: none; stroke: #2563eb; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.llay { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 10px; margin-top: 12px; align-items: start; }
.llay .card { display: flex; flex-direction: column; gap: 8px; }
.ltools { display: flex; flex-direction: column; gap: 8px; }
.tips { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 10px; }

/* ⑧ 回数制限 */
.limlay { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 10px; align-items: start; }
.limlay .card { display: flex; flex-direction: column; gap: 8px; }
.limnote b { font-family: var(--latin); font-size: 18px; color: var(--p-bad); }
.limnote p { margin: 0; font-size: 13px; color: var(--ink2); }

/* ⑨ AI 時代 */
.aitag { font-size: 12px; font-weight: 700; color: var(--p-ai); background: var(--p-ai-soft); border-radius: 6px; padding: 2px 8px; margin-right: 8px; vertical-align: 3px; }
.aigrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.aicard { border-color: #ddd6fe; background: #fdfcff; }
.aim { align-self: flex-start; font-size: 10.5px; font-weight: 700; color: #fff; background: var(--p-ai); border-radius: 5px; padding: 1px 7px; }

/* ⑩ チェックリスト */
.mlist { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 14px; }
.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(--p-hit); 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; color: var(--ink2); font-weight: 700; }
.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; }
.ckreset:hover { border-color: #94a3b8; color: var(--ink); }

.seg button:focus-visible, .replay:focus-visible, .simchk input:focus-visible, .mmrange input:focus-visible, .mlist input:focus-visible, .ckreset:focus-visible, .inl:focus-visible, .maplinks a:focus-visible, .sref a:focus-visible { outline: 3px solid #2563eb; outline-offset: 2px; }

@media (max-width: 1100px) {
  .wgrid4, .layers, .scgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tgrid3, .rgrid, .accgrid, .aigrid, .tips { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ltypes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .qflow { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 22px; }
  .qs:nth-child(4)::before, .qs:nth-child(4)::after { display: none; }
  .qlay, .simout, .llay, .limlay { grid-template-columns: minmax(0, 1fr); }
  .mmcard { grid-template-columns: minmax(0, 1fr); }
  .mmviz { grid-template-columns: minmax(0, 1fr); }
  .mmsvg { max-width: 600px; }
}
@media (max-width: 760px) {
  .wgrid4, .layers, .scgrid, .tgrid3, .rgrid, .accgrid, .aigrid, .tips, .qcards, .vh, .dbsgrid, .mlist { grid-template-columns: minmax(0, 1fr); }
  .ltypes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qflow { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .qs + .qs::before { left: 50%; top: -13px; width: 2px; height: 10px; }
  .qs + .qs::after { left: calc(50% - 4px); top: -6px; border: 5px solid transparent; border-top: 6px solid #94a3b8; }
  .qs:nth-child(4)::before, .qs:nth-child(4)::after { display: block; }
  .pcplot { height: 150px; }
  .simline { flex-wrap: wrap; }
  .simline .cell { flex: 0 0 calc(25% - 4px); }
  .simline .chg { width: 100%; flex-basis: 100%; border: 0; border-top: 2px dashed #fca5a5; border-bottom: 2px dashed #fca5a5; padding: 4px 0; }
  .simline .chg { flex-direction: row; gap: 6px; }
  .simstats, .mmnums { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .sn b, .mn b { font-size: 17px; }
  .mmcard, .simcard { padding: 14px; }
  .mmcap { display: block; }
  .mmsvg .ylab { display: none; }
  .mmsvg .tick { font-size: 15px; }
  .mmsvg .axl { font-size: 15px; }
  .mmsvg .hotlab { font-size: 15px; }
  .mmsvg .dotlab { font-size: 18px; }
  .qflow { gap: 12px; }
  .qs { flex-direction: row; align-items: baseline; flex-wrap: wrap; gap: 2px 10px; padding: 8px 12px; }
  .qs + .qs::before { top: -10px; height: 7px; }
  .qs + .qs::after { top: -5px; border-top-width: 5px; }
}
@media (prefers-reduced-motion: reduce) {
  .pcbars i, .pcline, .simline .cell, .simline .chg, .mmsvg .dot { transition: none; }
}