.step { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--accent); padding: 1.1rem 1.2rem 1.2rem; margin: 1.4rem 0; }
.step h2 { margin-top: 0; display: flex; align-items: center; gap: .6rem; font-size: 1.25rem; }
.num { display: inline-grid; place-items: center; width: 1.8rem; height: 1.8rem; background: var(--navy); color: #fff; font: 700 .9rem/1 var(--mono); }
.prompt-box { position: relative; }
.prompt-box pre { white-space: pre-wrap; word-break: break-word; background: var(--navy); color: var(--on-navy); font: 500 .8rem/1.55 var(--mono); padding: .9rem 1rem; margin: 0 0 .7rem; max-height: 16rem; overflow: auto; }
.hint { color: var(--muted); font-size: .92rem; margin: .7rem 0 0; }
.chip { font: 600 .78rem/1 var(--mono); letter-spacing: .04em; color: var(--accent); background: var(--accent-soft); border: 1px solid transparent; padding: .45rem .6rem; margin: .2rem .15rem; cursor: pointer; }
.chip:hover, .chip:focus-visible { border-color: var(--accent); }
textarea#profile { width: 100%; min-height: 13rem; font: 500 .82rem/1.5 var(--mono); padding: .8rem; border: 1px solid var(--line); background: #fbfcfc; color: var(--text); resize: vertical; }
textarea#profile:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.verdict { margin: .7rem 0 0; font-size: .95rem; }
.verdict.ok { color: var(--accent); font-weight: 600; }
.verdict.bad { color: #a3341f; }
.verdict ul { margin: .3rem 0 0; padding-left: 1.2rem; font: 500 .82rem/1.5 var(--mono); }
.preview { margin-top: 1rem; }
.sleeve { display: flex; align-items: center; gap: .6rem; background: var(--navy); padding: .9rem; overflow-x: auto; }
.sleeve .end { font: 600 .68rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--on-navy-muted); }
.pads { display: flex; gap: .5rem; flex: 1; }
.pad { flex: 1; min-width: 4.4rem; border: 1px solid var(--accent); background: var(--navy-2); color: var(--on-navy); padding: .45rem .4rem; text-align: center; }
.pad b { display: block; font: 700 .72rem/1.2 var(--mono); color: #7fd3cc; margin-bottom: .25rem; }
.pad small { display: block; font: 500 .66rem/1.35 var(--mono); color: var(--on-navy-muted); }
.pad.unused { opacity: .45; }
.rules { list-style: none; padding: 0; margin: .8rem 0 0; }
.rules li { border-bottom: 1px solid var(--line); padding: .4rem 0; font-size: .95rem; }
.rules code { font: 600 .78rem/1 var(--mono); color: var(--accent); background: var(--accent-soft); padding: .15rem .35rem; margin-right: .4rem; }
.ble-status { font: 500 .85rem/1.5 var(--mono); background: var(--accent-soft); border-left: 4px solid var(--accent); padding: .7rem .9rem; }
.ble-status.warn { background: #fff4e5; border-left-color: #c77700; }
.ble-status.bad { background: #fdecea; border-left-color: #a3341f; }
.ble-status.confirm { background: #fff4e5; border-left-color: #c77700; font-weight: 700; }
button.btn { border: 1px solid var(--accent); cursor: pointer; font: inherit; font-weight: 700; }
button.btn:disabled { opacity: .45; cursor: not-allowed; filter: none; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.matrix-wrap { margin: 0 0 .8rem; }
#matrix-preview { display: block; width: 100%; max-width: 42rem; height: auto; aspect-ratio: 4 / 1; background: #05070b; border: 1px solid var(--line); }
.matrix-caption { margin: .45rem 0 0; font: 600 .68rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.mode-categories { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 .6rem; }
.cat-pill { font: 600 .74rem/1 var(--mono); letter-spacing: .04em; color: var(--accent); background: var(--accent-soft); border: 1px solid transparent; padding: .45rem .6rem; cursor: pointer; }
.cat-pill:hover, .cat-pill:focus-visible { border-color: var(--accent); }
.cat-pill.active { background: var(--navy); color: #fff; border-color: var(--navy); }
#mode-search { width: 100%; max-width: 26rem; font: 500 .85rem/1.4 var(--mono); padding: .55rem .7rem; border: 1px solid var(--line); background: #fbfcfc; color: var(--text); }
#mode-search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.mode-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: .6rem; margin: .8rem 0 0; }
.mode-card { text-align: left; cursor: pointer; font: inherit; color: var(--text); background: #fbfcfc; border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: .6rem .7rem; display: flex; flex-direction: column; gap: .25rem; }
.mode-card:hover, .mode-card:focus-visible { border-color: var(--accent); }
.mode-card.active { background: var(--accent-soft); border-color: var(--accent); }
.mode-card .m-num { font: 700 .72rem/1 var(--mono); color: var(--accent); }
.mode-card .m-title { font-weight: 800; font-size: .95rem; }
.mode-card .m-badge { font: 600 .64rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.mode-card .m-sum { font-size: .82rem; color: var(--muted); }
details.advanced { margin: .6rem 0; }
details.advanced > summary { cursor: pointer; font: 600 .8rem/1.4 var(--mono); color: var(--accent); }

@media (max-width: 560px) {
  .sleeve { flex-direction: column; align-items: stretch; }
  .sleeve .end { text-align: center; }
  .pads { flex-direction: column; }
  .pad { min-width: 0; display: grid; grid-template-columns: 4.2rem 1fr; gap: .1rem .6rem; text-align: left; align-items: center; }
  .pad b { margin: 0; grid-row: span 3; }
  .step { padding: 1rem .9rem 1.1rem; }
  .mode-grid { grid-template-columns: 1fr; }
  #matrix-preview { max-width: 100%; }
  #mode-search { max-width: 100%; }
}