/* アルゴリズム。style.css と flow.css の上に重ねる */
.bigo { display: grid; gap: 10px; }
.brow { display: grid; grid-template-columns: 110px minmax(0, 1fr) 150px; gap: 12px; align-items: center; }
.brow .bo { font-family: var(--latin); font-weight: 600; font-size: 14px; }
.brow .bo small { display: block; font-family: var(--sans); font-weight: 500; font-size: 11px; color: var(--muted); }
.bbar { height: 22px; border-radius: 6px; background: var(--line2); position: relative; overflow: hidden; }
.bbar i { position: absolute; inset: 0 auto 0 0; border-radius: 6px; background: linear-gradient(90deg, #22c55e, #f59e0b 55%, #ef4444); }
.bbar span { position: relative; font-size: 11.5px; font-weight: 700; padding-left: 8px; line-height: 22px; color: #0f172a; }
.brow .bt { font-size: 12.5px; font-weight: 700; }
.brow .bt small { display: block; font-weight: 500; font-size: 11px; color: var(--muted); }

.stgrid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.algrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.acard2 { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 13px 15px; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.acard2 h3 { margin: 0; font-size: 15.5px; line-height: 1.35; }
.acard2 .en { font-family: var(--latin); font-size: 11.5px; color: var(--muted); }
.acard2 p { margin: 0; font-size: 13px; color: var(--ink2); }
.ohead { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ob { font-family: var(--latin); font-size: 11px; font-weight: 600; background: var(--ink); color: #fff; border-radius: 6px; padding: 2px 7px; }
.cb { font-size: 11px; font-weight: 700; border-radius: 6px; padding: 2px 7px; background: var(--line2); color: var(--ink2); }
.used { margin-top: auto; padding-top: 7px; border-top: 1px dashed var(--line); }
.used h4 { margin: 0 0 4px; font-size: 11.5px; color: var(--k-test); }
.used ul { margin: 0; padding-left: 1.1em; font-size: 12.5px; color: var(--ink2); }
.gb { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; font-size: 11.5px; }
.gb span { border-radius: 7px; padding: 4px 7px; }
.gb .g { background: color-mix(in srgb, var(--k-test) 9%, white); color: #065f46; }
.gb .b { background: #fff7ed; color: #9a3412; }

.demos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.demo h3 { margin: 0 0 4px; font-size: 16px; }
.dnote { margin: 0 0 10px; font-size: 12.5px; color: var(--ink2); }
.dctrl { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.dctrl button, .dctrl select { font: inherit; font-size: 13px; font-weight: 700; border-radius: 999px; padding: 6px 14px; border: 1px solid var(--ink); background: var(--ink); color: #fff; cursor: pointer; }
.dctrl select { background: #fff; color: var(--ink); border-color: var(--line); }
.dctrl .ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.dctrl button:disabled { opacity: .5; cursor: default; }
.race { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.rlab { font-size: 12.5px; margin-bottom: 4px; }
.rlab b { font-family: var(--latin); font-size: 15px; }
.bars { height: 130px; display: flex; align-items: flex-end; gap: 1px; background: var(--line2); border-radius: 8px; padding: 4px; }
.bars i { flex: 1; background: #94a3b8; border-radius: 2px 2px 0 0; min-width: 0; }
.bars i.cmp { background: #f59e0b; }
.bars i.done { background: var(--k-test); }
.bsout { display: grid; gap: 8px; font-size: 13px; }
.bsrow { display: grid; grid-template-columns: 110px 1fr; gap: 10px; align-items: baseline; }
.bsrow b { font-family: var(--latin); font-size: 18px; }
.bsrow .lab { font-weight: 700; color: var(--ink2); }
.guesses { font-family: var(--latin); font-size: 11.5px; color: var(--muted); line-height: 1.7; word-break: break-all; }

@media (max-width: 1100px) {
  .stgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .algrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .demos { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .brow { grid-template-columns: 78px minmax(0, 1fr); }
  .brow .bt { grid-column: 2; margin-top: -6px; }
  .stgrid, .algrid { grid-template-columns: 1fr; }
  .bsrow { grid-template-columns: 1fr; gap: 2px; }
}
.gfilter { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.gfilter button { appearance: none; border: 1px solid var(--line); background: var(--paper); border-radius: 999px; padding: 5px 13px; font-size: 13px; font-weight: 700; cursor: pointer; color: var(--ink2); }
.gfilter button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* AI 時代のアルゴリズム（紫は AI の印） */
.subh { margin: 20px 0 10px; font-size: 15px; }
.aigrid2 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.cb.ai { background: #ede9fe; color: #5b21b6; font-family: var(--latin); }
.ailink { font-size: 12px; color: #1d4ed8; }
.aisrc { font-size: 11.5px; color: var(--muted); }
.aisrc a { color: #1d4ed8; }
.vecdemo { padding: 14px 16px; }
.vecwrap { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 14px; align-items: start; }
.vecplot { position: relative; height: 300px; background: var(--line2); border-radius: 12px; }
.vecplot svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.vecplot line { stroke: #6d28d9; stroke-width: 2; vector-effect: non-scaling-stroke; stroke-dasharray: 4 3; }
.vdot { --c: #64748b; position: absolute; transform: translate(-50%, -50%); appearance: none; font: inherit; font-size: 12px; font-weight: 700; white-space: nowrap; border: 1.5px solid color-mix(in srgb, var(--c) 45%, white); background: #fff; color: color-mix(in srgb, var(--c) 80%, black); border-radius: 999px; padding: 2px 9px; cursor: pointer; z-index: 1; }
.vdot.near { background: color-mix(in srgb, var(--c) 14%, white); border-color: #6d28d9; box-shadow: 0 0 0 3px rgba(109, 40, 217, .18); }
.vdot.on { background: #6d28d9; border-color: #6d28d9; color: #fff; }
.vdot:focus-visible { outline: 3px solid #2563eb; outline-offset: 2px; }
.veclist { font-size: 13px; }
.veclist ol { margin: 6px 0 8px; padding-left: 1.3em; }
.veclist li { margin: 2px 0; }
.veclist small { color: var(--muted); margin-left: 8px; font-family: var(--latin); font-size: 11.5px; }
.veclist p { margin: 0 0 8px; font-size: 12.5px; color: var(--ink2); }
.vk, .vlegend i { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--c); margin-right: 6px; vertical-align: 1px; }
.vlegend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
#ai .src { margin-top: 14px; }
@media (max-width: 1100px) { .aigrid2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) {
  .aigrid2, .vecwrap { grid-template-columns: 1fr; }
  .vecplot { height: 320px; }
  .vdot { font-size: 11px; padding: 2px 7px; }
}