/* Seat Four: "AI voices" page. Loads after site.css and costs.css, reuses their tokens and tables. */

/* Hero A/B: robot vs helpful */
.v-hero { padding: 80px 0 72px; background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.v-hero::before { content: ""; position: absolute; width: 900px; height: 900px; right: -320px; top: -420px; background: radial-gradient(circle, rgba(117,73,239,.5), rgba(117,73,239,0) 62%); }
.v-hero::after { content: ""; position: absolute; width: 600px; height: 600px; left: -260px; bottom: -380px; background: radial-gradient(circle, rgba(32,100,59,.35), rgba(32,100,59,0) 65%); }
.v-hero .wrap { position: relative; z-index: 1; }
.v-hero h1 { font-size: clamp(2.5rem, 5.4vw, 4.4rem); max-width: 900px; }
.v-hero .lead { color: #B7BEC8; max-width: 720px; }
.v-hero .crumb, .v-hero .crumb a { color: #8792A3; }
.v-hero .chip { background: rgba(255,255,255,.06); border-color: rgba(185,162,255,.35); color: #D7C9FF; box-shadow: none; }
.ab { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; max-width: 980px; }
.ab-card { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; text-align: left; padding: 24px; border-radius: var(--radius-xl); border: 1px solid #2E3640; background: rgba(255,255,255,.04); color: #fff; cursor: pointer; font: inherit; transition: transform .2s, border-color .2s, background .2s; }
.ab-card:hover { transform: translateY(-3px); border-color: #4A5361; }
.ab-card b { display: block; font: 600 1.2rem var(--head); }
.ab-card span.sub { display: block; font-size: .88rem; color: #8792A3; margin-top: 2px; }
.ab-card .verdict-tag { position: absolute; top: 14px; right: 16px; font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: 3px 9px; border-radius: 99px; }
.ab-robot .verdict-tag { background: rgba(180,35,24,.3); color: #FDA29B; }
.ab-human .verdict-tag { background: rgba(32,100,59,.4); color: #9BE2B4; }
.ab-human { border-color: rgba(185,162,255,.45); background: rgba(117,73,239,.12); }
.ab-card.playing { border-color: #B9A2FF; }

/* Play button with live equalizer */
.vbtn { position: relative; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; border: 0; background: var(--brand); color: #fff; cursor: pointer; flex: none; box-shadow: 0 8px 22px -8px rgba(117,73,239,.8); transition: transform .15s; }
.vbtn:hover { transform: scale(1.06); }
.ab-robot .vbtn { background: #4A5361; box-shadow: none; }
.vbtn::before { content: ""; width: 0; height: 0; margin-left: 4px; border-style: solid; border-width: 9px 0 9px 15px; border-color: transparent transparent transparent currentColor; }
.playing .vbtn::before, .vbtn.playing::before { width: 14px; height: 16px; margin-left: 0; border: 0; border-left: 4px solid currentColor; border-right: 4px solid currentColor; }
.eq { display: inline-flex; align-items: flex-end; gap: 3px; height: 18px; margin-left: 8px; vertical-align: -3px; }
.eq i { width: 3px; height: 4px; border-radius: 2px; background: currentColor; opacity: .5; }
.playing .eq i { opacity: 1; animation: eq .9s ease-in-out infinite; }
.playing .eq i:nth-child(2) { animation-delay: .15s; } .playing .eq i:nth-child(3) { animation-delay: .3s; } .playing .eq i:nth-child(4) { animation-delay: .45s; } .playing .eq i:nth-child(5) { animation-delay: .6s; }
@keyframes eq { 0%, 100% { height: 4px; } 50% { height: 18px; } }
.vprog { display: block; height: 4px; border-radius: 99px; background: rgba(135,146,163,.25); margin-top: 12px; overflow: hidden; grid-column: 1 / -1; }
.vprog i { display: block; height: 100%; width: 0; background: var(--brand); border-radius: 99px; }
.ab-card .vprog { background: #252D35; } .ab-card .vprog i { background: #B9A2FF; }
.line-quote { margin: 26px 0 0; padding-left: 16px; border-left: 3px solid var(--brand); color: #DDE2E8; font-size: 1rem; max-width: 760px; }
.line-quote span { display: block; font-size: .8rem; color: #8792A3; margin-bottom: 4px; letter-spacing: .06em; text-transform: uppercase; }

/* Evolution track */
.evo { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
.evo::before { content: ""; position: absolute; left: 4%; right: 4%; top: 28px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, #8792A3, #FDB022 35%, #9E7BFF 70%, #7549EF); opacity: .35; }
.evo li { position: relative; text-align: center; padding: 0 6px; }
.evo .vbtn { margin: 0 auto 16px; width: 60px; height: 60px; }
.evo li:nth-child(1) .vbtn { background: #4A5361; box-shadow: none; }
.evo li:nth-child(2) .vbtn { background: #8B6A2B; box-shadow: none; }
.evo b { display: block; font: 600 1.05rem var(--head); }
.evo span { display: block; font-size: .85rem; color: var(--text-2); }
.evo em { display: inline-block; margin-top: 8px; font-style: normal; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 9px; border-radius: 99px; background: var(--canvas); color: var(--text-2); }

/* Sound lab */
.lab { background: var(--canvas); }
.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 30px; }
.filter { background: var(--surface); border: 1px solid var(--divider); border-radius: 999px; padding: 8px 16px; font: 600 .88rem var(--body); color: var(--ink); cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.filter:hover { border-color: var(--brand); }
.filter[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.vgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.vcard { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 14px 16px; align-items: center; background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 20px; transition: transform .2s, box-shadow .2s, border-color .2s, opacity .3s; }
.vcard:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.vcard.playing { border-color: var(--brand); box-shadow: 0 0 0 4px var(--brand-tint); }
.vcard[hidden] { display: none; }
.vcard .vbtn { width: 48px; height: 48px; }
.vcard.t-robot .vbtn { background: #4A5361; box-shadow: none; }
.vcard.t-meh .vbtn { background: #B54708; box-shadow: none; }
.vcard h3 { font-size: 1.02rem; margin: 0; }
.vcard .vend { font-size: .82rem; color: var(--text-2); }
.vmeta { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 6px; }
.vmeta .tag { font-size: .66rem; }
.vcard p { grid-column: 1 / -1; margin: 0; font-size: .86rem; color: var(--text-2); }
.vcard .vprog { margin-top: 0; }
.lab-note { text-align: center; font-size: .85rem; color: var(--text-2); margin: 22px auto 0; max-width: 760px; }

/* Latency: stacked bar */
.lat { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.lat::before { content: ""; position: absolute; width: 720px; height: 720px; right: -260px; bottom: -380px; background: radial-gradient(circle, rgba(117,73,239,.4), rgba(117,73,239,0) 65%); }
.lat .wrap { position: relative; }
.lat .eyebrow { color: #B9A2FF; } .lat .eyebrow::before { background: #B9A2FF; }
.lat .lead { color: #B7BEC8; }
.lat-card { margin-top: 40px; background: rgba(255,255,255,.04); border: 1px solid #2E3640; border-radius: var(--radius-xl); padding: 30px; }
.lat-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.lat-tab { background: transparent; color: #DDE2E8; border: 1px solid #2E3640; border-radius: 999px; padding: 8px 16px; font: 600 .88rem var(--body); cursor: pointer; }
.lat-tab[aria-selected="true"] { background: var(--brand); border-color: var(--brand); color: #fff; }
.lat-total { margin: 24px 0 10px; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.lat-total b { font: 700 clamp(2.4rem, 5vw, 3.4rem) var(--head); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.lat-total span { color: #B7BEC8; }
.lat-scale { position: relative; height: 44px; border-radius: 12px; background: #1C232A; overflow: hidden; display: flex; }
.lat-seg { height: 100%; width: 0; display: flex; align-items: center; justify-content: center; font-size: .78rem; font-weight: 600; white-space: nowrap; overflow: hidden; transition: width .7s cubic-bezier(.2,.8,.2,1); }
.lat-seg.s-ear { background: #2E7D52; } .lat-seg.s-brain { background: #6539DD; } .lat-seg.s-voice { background: #9E7BFF; color: #151A1E; } .lat-seg.s-human { background: #2E7D52; }
.lat-axis { display: flex; justify-content: space-between; font-size: .75rem; color: #8792A3; margin-top: 8px; }
.lat-legend { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 16px; font-size: .85rem; color: #B7BEC8; }
.lat-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.lat-note { margin-top: 16px; padding: 14px 16px; border-radius: var(--radius); background: rgba(117,73,239,.16); border: 1px solid rgba(185,162,255,.3); color: #E9E2FF; font-size: .93rem; }
.ttfa { margin-top: 30px; }
.ttfa h3 { font-size: 1.1rem; }
.ttfa ul { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 10px; }
.ttfa li { display: grid; grid-template-columns: minmax(170px, 1fr) 3fr 64px; gap: 14px; align-items: center; font-size: .88rem; }
.ttfa .tt { height: 12px; border-radius: 99px; background: #1C232A; overflow: hidden; }
.ttfa .tt i { display: block; height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, #6CE9A6, #20643B); transition: width 1s cubic-bezier(.2,.8,.2,1); }
.ttfa li.slow .tt i { background: linear-gradient(90deg, #FDB022, #B54708); }
.ttfa li.slower .tt i { background: linear-gradient(90deg, #F97066, #B42318); }
.ttfa .ms { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.ttfa-note { font-size: .8rem; color: #8792A3; margin-top: 12px; }
.three-ways { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 30px; }
.way-card { background: rgba(255,255,255,.04); border: 1px solid #2E3640; border-radius: var(--radius-lg); padding: 22px; }
.way-card .i { color: #B9A2FF; }
.way-card b { display: block; font: 600 1.05rem var(--head); margin: 8px 0 4px; }
.way-card p { margin: 0; font-size: .9rem; color: #B7BEC8; }

/* Knowledge base demo */
.kb-top { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; }
.kb-count { text-align: right; }
.kb-count b { display: block; font: 800 clamp(3.4rem, 8vw, 5.6rem) var(--head); color: var(--brand); line-height: .9; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.kb-count span { font-size: .9rem; color: var(--text-2); }
.kb-qs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.kb-q { background: var(--surface); border: 1px solid var(--divider); border-radius: 999px; padding: 9px 16px; font: 500 .92rem var(--body); color: var(--ink); cursor: pointer; transition: border-color .15s, background .15s; }
.kb-q:hover { border-color: var(--brand); }
.kb-q[aria-pressed="true"] { background: var(--brand-tint); border-color: var(--brand); color: var(--brand-pressed); font-weight: 600; }
.kb-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 22px; }
.kb-ans { border-radius: var(--radius-lg); padding: 22px; border: 1px solid var(--divider); background: var(--surface); min-height: 190px; }
.kb-ans h3 { display: flex; align-items: center; gap: 10px; font-size: 1rem; }
.kb-ans.bad { background: #FFF8F7; border-color: #F9D3CF; } .kb-ans.bad h3 .i { color: var(--red); }
.kb-ans.good { background: #F6FBF7; border-color: #BFE3CB; } .kb-ans.good h3 .i { color: var(--green); }
.kb-caller { font-size: .85rem; color: var(--text-2); margin: 0 0 10px; }
.kb-bubble { display: inline-block; padding: 12px 15px; border-radius: 16px 16px 16px 4px; background: #fff; border: 1px solid var(--divider); font-size: .95rem; line-height: 1.5; }
.kb-ans.good .kb-bubble { border-color: #BFE3CB; }
.kb-ans.bad .kb-bubble { border-color: #F9D3CF; }
.kb-why { margin: 12px 0 0; font-size: .82rem; font-weight: 600; }
.kb-ans.bad .kb-why { color: var(--red); } .kb-ans.good .kb-why { color: var(--green); }
.caret::after { content: "|"; margin-left: 1px; animation: blink 1s steps(1) infinite; color: var(--brand); }
@keyframes blink { 50% { opacity: 0; } }
.kb-tips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.kb-tip { padding: 20px; border-radius: var(--radius-lg); background: var(--canvas); }
.kb-tip b { display: block; font-family: var(--head); margin-bottom: 4px; }
.kb-tip span { font-size: .88rem; color: var(--text-2); }
.kb-tip .n { font: 800 1.6rem var(--head); color: var(--brand); display: block; margin-bottom: 6px; }

/* Easy vs hard switch */
.switch { display: inline-flex; padding: 5px; border-radius: 999px; background: var(--canvas); border: 1px solid var(--divider); margin-top: 30px; }
.switch button { border: 0; background: transparent; padding: 10px 22px; border-radius: 999px; font: 600 .95rem var(--body); color: var(--text-2); cursor: pointer; transition: background .2s, color .2s; }
.switch button[aria-selected="true"] { background: var(--ink); color: #fff; }
.path { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; margin-top: 28px; align-items: start; }
.path[hidden] { display: none; }
.path ol { list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; gap: 12px; }
.path ol li { counter-increment: s; display: grid; grid-template-columns: 38px 1fr; gap: 14px; align-items: start; padding: 16px 18px; background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius); animation: slideIn .45s ease both; }
.path ol li::before { content: counter(s); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--brand-tint); color: var(--brand-pressed); font: 700 1rem var(--head); }
.path ol li b { display: block; } .path ol li span { font-size: .9rem; color: var(--text-2); }
.path ol li:nth-child(2) { animation-delay: .06s; } .path ol li:nth-child(3) { animation-delay: .12s; } .path ol li:nth-child(4) { animation-delay: .18s; } .path ol li:nth-child(5) { animation-delay: .24s; } .path ol li:nth-child(6) { animation-delay: .3s; } .path ol li:nth-child(7) { animation-delay: .36s; }
@keyframes slideIn { from { opacity: 0; transform: translateX(-12px); } to { opacity: 1; transform: none; } }
.path-side { background: var(--ink); color: #fff; border-radius: var(--radius-xl); padding: 28px; }
.path-side .big { font: 700 2.4rem var(--head); letter-spacing: -.02em; }
.path-side .big small { font-size: 1rem; color: #B7BEC8; font-weight: 500; }
.path-side ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.path-side li { display: flex; gap: 10px; font-size: .92rem; color: #DDE2E8; }
.path-side li .i { width: 18px; height: 18px; margin-top: 3px; color: #9BE2B4; }
.path-side li.x .i { color: #FDA29B; }
.path-side .hint { margin-top: 18px; font-size: .85rem; color: #8792A3; }

/* Promise */
.promise-sec { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.promise-sec::before { content: ""; position: absolute; width: 900px; height: 900px; left: 50%; top: -520px; transform: translateX(-50%); background: radial-gradient(circle, rgba(117,73,239,.45), rgba(117,73,239,0) 62%); }
.promise-sec .wrap { position: relative; }
.promise-sec .eyebrow { color: #B9A2FF; } .promise-sec .eyebrow::before { background: #B9A2FF; }
.promise-sec .lead { color: #B7BEC8; }
.nevers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; }
.never { position: relative; padding: 26px 22px; border-radius: var(--radius-lg); background: rgba(255,255,255,.05); border: 1px solid #2E3640; overflow: hidden; }
.never::after { content: "NEVER"; position: absolute; right: -6px; bottom: -14px; font: 900 3.4rem var(--head); color: rgba(255,255,255,.04); letter-spacing: -.02em; }
.never .i { width: 30px; height: 30px; color: #B9A2FF; }
.never b { display: block; font: 600 1.15rem var(--head); margin: 12px 0 6px; }
.never p { margin: 0; color: #B7BEC8; font-size: .92rem; }
.never.in .i { animation: pop .5s cubic-bezier(.2,1.6,.4,1) both; }
@keyframes pop { from { transform: scale(.4); opacity: 0; } to { transform: none; opacity: 1; } }
.manifesto { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; margin-top: 56px; align-items: center; }
.manifesto blockquote { margin: 0; font: 600 clamp(1.5rem, 2.6vw, 2.1rem) var(--head); line-height: 1.25; letter-spacing: -.01em; }
.manifesto blockquote::before { content: "\201C"; display: block; font-size: 4rem; line-height: .6; color: #B9A2FF; }
.manifesto cite { display: block; margin-top: 14px; font: 500 .9rem var(--body); font-style: normal; color: #8792A3; }
.free-of { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.free-of span { padding: 8px 14px; border-radius: 999px; border: 1px dashed #4A5361; color: #DDE2E8; font-size: .88rem; text-decoration: line-through; text-decoration-color: #F97066; text-decoration-thickness: 2px; }
.help-card { background: var(--surface); color: var(--ink); border-radius: var(--radius-xl); padding: 30px; box-shadow: var(--shadow-lg); }
.help-card h3 { font-size: 1.35rem; }
.help-card p { color: var(--text-2); }
.help-card .btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.help-card .btn { height: 48px; padding: 0 20px; font-size: .95rem; }

@media (max-width: 1080px) {
  .vgrid { grid-template-columns: repeat(2, 1fr); }
  .nevers, .kb-tips { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .ab, .kb-duo, .path, .manifesto, .three-ways { grid-template-columns: 1fr; }
  .evo { grid-template-columns: 1fr; gap: 18px; }
  .evo::before { display: none; }
  .evo li { display: grid; grid-template-columns: 60px 1fr; gap: 4px 16px; text-align: left; align-items: center; }
  .evo .vbtn { margin: 0; grid-row: span 3; }
  .evo em { justify-self: start; margin-top: 2px; }
  .kb-top { grid-template-columns: 1fr; }
  .kb-count { text-align: left; }
  .ttfa li { grid-template-columns: 1fr 64px; }
  .ttfa .tt { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 600px) {
  .vgrid, .nevers, .kb-tips { grid-template-columns: 1fr; }
  .lat-card { padding: 20px; }
  .lat-seg { font-size: 0; }
  .switch button { padding: 10px 14px; font-size: .88rem; }
}
@media (prefers-reduced-motion: reduce) {
  .playing .eq i { animation: none; height: 12px; }
  .lat-seg, .ttfa .tt i { transition: none; }
}
@media (max-width: 600px) { .ab-card { padding-top: 46px; } .ab-card .verdict-tag { top: 14px; left: 24px; right: auto; } }

/* ===== Added 2026-10-14: "This is scary, right?" band ===== */
.scary { background: var(--brand-soft); position: relative; overflow: hidden; padding: 96px 0; }
.scary::before { content: ""; position: absolute; width: 760px; height: 760px; left: -300px; top: -380px; background: radial-gradient(circle, rgba(117,73,239,.16), rgba(117,73,239,0) 65%); }
.scary-grid { position: relative; display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.scary-art { position: relative; border-radius: var(--radius-xl); overflow: hidden; border: 1px solid #E4DBFF; box-shadow: var(--shadow-lg); transform: rotate(-1.2deg); }
.scary-art img { width: 100%; aspect-ratio: 1400 / 787; object-fit: cover; }
.bubble { position: absolute; max-width: 46%; padding: 9px 14px; border-radius: 16px; background: #fff; color: var(--ink); font: 600 .84rem/1.3 var(--body); box-shadow: 0 10px 24px -8px rgba(21,26,30,.3); }
.bubble.b-old { left: 4%; top: 6%; border-bottom-left-radius: 4px; color: #626B75; }
.bubble.b-new { right: 4%; top: 8%; border-bottom-right-radius: 4px; background: var(--brand); color: #fff; }
.scary-copy h2 { margin-bottom: .35em; }
.scary-list { list-style: none; margin: 22px 0 26px; padding: 0; display: grid; gap: 14px; }
.scary-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 1rem; }
.scary-list .i { width: 20px; height: 20px; margin-top: 3px; color: var(--brand); }
.scary-list b { font-weight: 600; }

/* ===== How a voice agent works: step-through diagram ===== */
.how { background: var(--canvas); }
.how-card { margin-top: 40px; background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius-xl); padding: 30px; box-shadow: var(--shadow); }
.flow { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px 30px; }
.hnode { position: relative; align-self: stretch; justify-content: flex-start; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 18px 10px 16px; text-align: center; background: var(--canvas); border: 1.5px solid var(--divider); border-radius: var(--radius-lg); color: var(--ink); font: inherit; cursor: pointer; transition: border-color .25s, background .25s, box-shadow .25s, transform .25s; }
.hnode:hover { border-color: #B9A2FF; }
.hnode .hico { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; background: var(--brand-tint); color: var(--brand-pressed); transition: background .25s, color .25s; flex: none; }
.hnode .htxt { display: block; }
.hnode b { display: block; font: 600 .96rem/1.2 var(--head); }
.hnode small { display: block; margin-top: 4px; font-size: .76rem; line-height: 1.35; color: var(--text-2); }
.hchips { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; margin-top: 8px; font-style: normal; }
.hchips i { font-style: normal; font-size: .68rem; font-weight: 600; padding: 2px 7px; border-radius: 99px; background: var(--brand-tint); color: var(--brand-pressed); }
.hnode.link::after { content: ""; position: absolute; left: calc(100% + 4px); top: 50%; width: 22px; height: 2px; background: repeating-linear-gradient(90deg, #B9A2FF 0 5px, transparent 5px 9px); }
.hnode.seen { border-color: #CBB9FA; }
.hnode.echo { border-color: #B9A2FF; background: var(--brand-soft); }
.hnode.on { border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px var(--brand-tint), var(--shadow); transform: translateY(-2px); }
.hnode.on .hico { background: var(--brand); color: #fff; }
.hnode.side { flex-direction: row; text-align: left; gap: 14px; padding: 14px 16px; }
.hnode.barge { grid-column: 2 / 6; grid-row: 2; border-style: dashed; }
.hnode.human { grid-column: 6; grid-row: 2; }
.hnode.barge .hico { background: var(--amber-bg); color: var(--amber); }
.hnode.human .hico { background: var(--green-bg); color: var(--green); }
.hnode.barge.on { border-color: #F79009; box-shadow: 0 0 0 4px var(--amber-bg), var(--shadow); }
.hnode.barge.on .hico { background: #F79009; color: #fff; }
.hnode.human.on { border-color: var(--green); box-shadow: 0 0 0 4px var(--green-bg), var(--shadow); }
.hnode.human.on .hico { background: var(--green); color: #fff; }
.pkt { position: absolute; left: 0; top: 0; z-index: 3; width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(117,73,239,.22), 0 0 14px rgba(117,73,239,.75); pointer-events: none; opacity: 0; }
.pkt.stop { background: #F79009; box-shadow: 0 0 0 4px rgba(247,144,9,.25), 0 0 14px rgba(247,144,9,.8); }
.pkt.hand { background: #12B76A; box-shadow: 0 0 0 4px rgba(18,183,106,.25), 0 0 14px rgba(18,183,106,.8); }
.hctl { margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--divider); display: grid; gap: 20px; }
.hcap { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; min-height: 96px; }
.hnum { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--ink); color: #fff; font: 700 1.3rem var(--head); }
.hcap b { display: block; font: 600 1.25rem var(--head); letter-spacing: -.01em; margin-bottom: 4px; }
.hcap p { margin: 0; max-width: 780px; color: var(--text-2); }
.hbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 14px; }
.hbtn { display: inline-flex; align-items: center; gap: 6px; height: 42px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--divider); background: var(--surface); color: var(--ink); font: 600 .92rem var(--body); cursor: pointer; transition: border-color .15s, background .15s; }
.hbtn:hover { border-color: var(--brand); }
.hbtn .i { width: 16px; height: 16px; }
.hbtn:disabled { opacity: .4; cursor: default; }
.hbtn:disabled:hover { border-color: var(--divider); }
.hplay[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.hplay[aria-pressed="true"] .i { animation: spin 2.4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.hdots { display: flex; gap: 8px; }
.hdots button { width: 12px; height: 12px; padding: 0; border-radius: 50%; border: 0; background: #CFD5DE; cursor: pointer; transition: background .2s, transform .2s; position: relative; }
.hdots button::before { content: ""; position: absolute; inset: -8px; }
.hdots button[aria-current="step"] { background: var(--brand); transform: scale(1.35); }
.hdots button.seen { background: #B9A2FF; }
.hstep { margin-left: auto; font-size: .85rem; color: var(--text-2); font-variant-numeric: tabular-nums; }
.hcaps { margin: 22px 0 0; padding-left: 20px; display: grid; gap: 10px; color: var(--text-2); font-size: .92rem; }
.hcaps b { color: var(--ink); } .hcaps b::after { content: ". "; }
.hcaps[hidden] { display: none; }
.how-note { margin: 22px 0 0; padding: 14px 16px; border-radius: var(--radius); background: var(--brand-soft); border: 1px solid #E4DBFF; font-size: .93rem; }

/* ===== Transcripts + try one yourself ===== */
.after { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.after::before { content: ""; position: absolute; width: 760px; height: 760px; left: 50%; bottom: -460px; transform: translateX(-50%); background: radial-gradient(circle, rgba(117,73,239,.38), rgba(117,73,239,0) 65%); }
.after .wrap { position: relative; }
.after .eyebrow { color: #B9A2FF; } .after .eyebrow::before { background: #B9A2FF; }
.after .lead { color: #B7BEC8; }
.after-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 44px; align-items: start; }
.after-card { background: rgba(255,255,255,.05); border: 1px solid #2E3640; border-radius: var(--radius-xl); padding: 30px; }
.after-card h3 { display: flex; gap: 12px; align-items: center; font-size: 1.35rem; }
.after-card h3 .i { color: #B9A2FF; }
.after-card p { color: #B7BEC8; }
.after-card p.muted { color: #8792A3; }
.after-card ul { list-style: none; margin: 18px 0 22px; padding: 0; display: grid; gap: 12px; }
.after-card li { display: flex; gap: 12px; align-items: flex-start; font-size: .95rem; color: #DDE2E8; }
.after-card li .i { width: 18px; height: 18px; margin-top: 3px; color: #9BE2B4; }
.after-card li.x .i { color: #FDB022; }
.after-card code { font-size: .86em; padding: 1px 6px; border-radius: 6px; background: rgba(255,255,255,.1); color: #E9E2FF; overflow-wrap: anywhere; }
.tx { margin: 18px 0 0; padding: 16px 18px; border-radius: var(--radius); background: #0E1317; border: 1px solid #2E3640; display: grid; gap: 8px; }
.tx p { margin: 0; display: grid; grid-template-columns: 38px 62px 1fr; gap: 10px; font-size: .88rem; color: #DDE2E8; }
.tx time { font-variant-numeric: tabular-nums; color: #8792A3; }
.tx b { color: #B9A2FF; font-weight: 600; }
.tx small { color: #8792A3; font-size: .74rem; }
.after-card .btn { margin-top: 4px; margin-bottom: 14px; }

@media (max-width: 1000px) {
  .scary-grid, .after-grid { grid-template-columns: 1fr; gap: 36px; }
  .flow { grid-template-columns: 1fr; gap: 26px; }
  .hnode, .hnode.side { flex-direction: row; text-align: left; gap: 14px; padding: 14px 16px; }
  .hchips { justify-content: flex-start; }
  .hnode.link::after { left: 38px; top: calc(100% + 4px); width: 2px; height: 18px; background: repeating-linear-gradient(180deg, #B9A2FF 0 5px, transparent 5px 9px); }
  .hnode.barge, .hnode.human { grid-column: 1; grid-row: auto; }
  .hnode.barge { margin-top: 10px; }
}
@media (max-width: 600px) {
  .scary { padding: 72px 0; }
  .scary-art { transform: none; }
  .bubble { font-size: .7rem; padding: 6px 10px; }
  .how-card, .after-card { padding: 20px; }
  .hcap { grid-template-columns: 1fr; min-height: 150px; }
  .hstep { margin-left: 0; }
  .tx p { grid-template-columns: 34px 52px 1fr; font-size: .82rem; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  .hnode, .hnode .hico, .hdots button { transition: none; }
  .hplay[aria-pressed="true"] .i { animation: none; }
}

/* ===== Added 2026-10-14: retro section, "If your first computer voice drove a train" ===== */
.retro { background: #14120C; color: #F4EBD0; position: relative; overflow: hidden; padding: 96px 0; }
.retro::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(0deg, rgba(255,176,0,.05) 0 1px, transparent 1px 4px); pointer-events: none; }
.retro .wrap { position: relative; }
.retro-head { text-align: center; max-width: 760px; margin: 0 auto; }
.retro-head h2 { color: #FFE7A8; text-wrap: balance; }
.retro-head .lead { color: #CFC4A4; }
.retro .eyebrow { color: #FFB000; } .retro .eyebrow::before { background: #FFB000; }
.retro-ic { display: grid; place-items: center; width: 72px; height: 72px; border-radius: 20px; border: 2px solid #FFB000; color: #FFB000; margin: 0 auto 18px; box-shadow: 0 0 0 6px rgba(255,176,0,.12), 0 0 30px rgba(255,176,0,.25); }
.retro-ic .i { width: 40px; height: 40px; }
.retro.live .retro-ic { animation: rt-roll 1.1s ease-in-out infinite; }
@keyframes rt-roll { 0%, 100% { transform: translateX(-7px); } 50% { transform: translateX(7px); } }

.retro-sign { max-width: 720px; margin: 36px auto 0; padding: 18px 22px 16px; border-radius: 14px; background: #0A0904; border: 1px solid #3A3118; box-shadow: inset 0 0 24px rgba(0,0,0,.8); }
.rt-led { display: block; font: 700 clamp(1rem, 2.6vw, 1.5rem)/1.2 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; letter-spacing: .12em; color: #FFB000; text-shadow: 0 0 10px rgba(255,176,0,.65); text-align: center; min-height: 1.2em; }
.rt-route { list-style: none; margin: 16px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); position: relative; }
.rt-route::before { content: ""; position: absolute; left: 12.5%; right: 12.5%; top: 7px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, #E5484D, #3E8EF7, #30A46C, #7549EF); }
.rt-route li { position: relative; text-align: center; font: 600 .78rem var(--body); letter-spacing: .08em; text-transform: uppercase; color: #A59A7C; padding-top: 22px; }
.rt-route li i { position: absolute; left: 50%; top: 0; width: 18px; height: 18px; margin-left: -9px; border-radius: 50%; background: #0A0904; border: 4px solid var(--c); }
.rt-route li:nth-child(1) { --c: #E5484D; } .rt-route li:nth-child(2) { --c: #3E8EF7; } .rt-route li:nth-child(3) { --c: #30A46C; } .rt-route li:nth-child(4) { --c: #7549EF; }
.rt-route .rt-here { color: #FFE7A8; }
.rt-route .rt-here i { background: #7549EF; box-shadow: 0 0 0 4px rgba(117,73,239,.35); }

.retro-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 36px auto 0; max-width: 980px; }
.rt-card { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; text-align: left; padding: 26px 24px 22px; border-radius: var(--radius-xl); border: 1px solid #4A4020; background: rgba(255,176,0,.06); color: #F4EBD0; cursor: pointer; font: inherit; transition: transform .2s, border-color .2s, background .2s; }
.rt-card:hover { transform: translateY(-3px); border-color: #FFB000; }
.rt-card:focus-visible { outline: 3px solid #FFE7A8; outline-offset: 3px; }
.rt-card b { display: block; font: 600 1.2rem var(--head); color: #FFE7A8; padding-right: 74px; }
.rt-card span.sub { display: block; font-size: .9rem; color: #CFC4A4; margin-top: 4px; }
.rt-card .verdict-tag { position: absolute; top: 14px; right: 16px; font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: 3px 9px; border-radius: 99px; background: rgba(255,176,0,.2); color: #FFD27A; }
.rt-card .vbtn { background: #FFB000; color: #14120C; width: 64px; height: 64px; box-shadow: 0 8px 22px -8px rgba(255,176,0,.7); }
.rt-card .vprog { background: #2B2512; } .rt-card .vprog i { background: #FFB000; }
.rt-card.playing { border-color: #FFB000; background: rgba(255,176,0,.12); }
.retro-cap { max-width: 760px; margin: 26px auto 0; text-align: center; font-size: .92rem; color: #A59A7C; }
.retro-cap a { color: #FFD27A; text-decoration: underline; text-underline-offset: 3px; }
.retro-cap a:hover { color: #FFE7A8; }
@media (max-width: 760px) {
  .retro { padding: 72px 0; }
  .retro-cards { grid-template-columns: 1fr; }
  .rt-card { padding: 24px 18px 20px; gap: 14px; }
  .rt-card b { padding-right: 0; margin-top: 18px; }
  .rt-route li { font-size: .68rem; letter-spacing: .04em; }
}
@media (prefers-reduced-motion: reduce) {
  .retro.live .retro-ic { animation: none; }
  .rt-card { transition: none; }
}