:root {
    /* Dark (default) — tuned for WCAG AA on body and labels */
    --bg: #0a0d0b;
    --bg-2: #0f1311;
    --panel: #11161300;
    --ink: #e3f5e1;            /* primary text · ~14:1 on bg */
    --ink-dim: #a7cab3;         /* secondary text · ~7.5:1 */
    --ink-faint: #7d978a;       /* tertiary labels · ~5:1 (AA normal) */
    --rule: #2a3a30;            /* borders · visible but subtle */
    --accent: #7bf08a;          /* phosphor green · ~13:1 */
    --accent-2: #34c24a;
    --accent-ink: #0a0d0b;
    --warn: #ffb347;
    --danger: #ff7a7a;
    --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --display: "JetBrains Mono", "IBM Plex Mono", ui-monospace, monospace;
    --gap: 20px;
    --maxw: 1240px;
    --pad-y: 72px;
  }
  html[data-theme="light"] {
    /* Light — cream/olive palette, all tiers ≥ AA on body */
    --bg: #f2efe6;
    --bg-2: #e9e5d8;            /* chrome surfaces · slightly darker than bg */
    --ink: #101010;             /* primary text · ~16:1 on bg */
    --ink-dim: #4c4c42;         /* secondary · ~8.5:1 */
    --ink-faint: #6e6a5e;       /* tertiary labels · ~5.2:1 (AA normal) */
    --rule: #c5bfaf;            /* borders · visible on cream */
    --accent: #2b6b32;          /* deep green · ~7:1 on bg */
    --accent-2: #1f4f25;
    --accent-ink: #f2efe6;
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
  body {
    font-family: var(--mono);
    font-feature-settings: "ss01","ss02","cv01","cv02";
    font-size: 14px;
    line-height: 1.55;
    letter-spacing: 0.01em;
    overflow-x: hidden;
  }

  /* subtle scanline / grid texture */
  body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    background-image:
      linear-gradient(to right, color-mix(in oklab, var(--ink) 3%, transparent) 1px, transparent 1px),
      linear-gradient(to bottom, color-mix(in oklab, var(--ink) 3%, transparent) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 50% 20%, black 40%, transparent 90%);
    z-index: 0;
  }

  a { color: inherit; text-decoration: none; }
  a.link { border-bottom: 1px dashed var(--ink-faint); padding-bottom: 1px; }
  a.link:hover { color: var(--accent); border-bottom-color: var(--accent); }

  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; position: relative; z-index: 2; }

  /* ─────────────── top bar ─────────────── */
  .top {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(6px);
    background: color-mix(in oklab, var(--bg) 86%, transparent);
    border-bottom: 1px solid var(--rule);
  }
  .top-inner {
    display: flex; align-items: center; gap: 24px;
    height: 52px;
    font-size: 12.5px;
  }
  .brand {
    display: flex; align-items: center; gap: 10px;
    font-weight: 700; letter-spacing: 0.02em;
  }
  .brand .mark {
    width: 26px; height: 26px;
    display: inline-grid; place-items: center;
    position: relative;
  }
  .brand .mark img {
    width: 100%; height: 100%; display: block;
  }
  .top nav { display: flex; gap: 22px; color: var(--ink-dim); margin-left: 8px; }
  .top nav a:hover { color: var(--ink); }
  .spacer { flex: 1; }
  .top-right { display: flex; align-items: center; gap: 14px; color: var(--ink-dim); }
  .chip {
    border: 1px solid var(--rule);
    padding: 4px 9px;
    font-size: 11.5px;
    color: var(--ink-dim);
    cursor: pointer;
    user-select: none;
  }
  .chip:hover { color: var(--ink); border-color: var(--ink-faint); }
  .chip[aria-pressed="true"] { color: var(--accent); border-color: var(--accent); }

  /* ─────────────── hero ─────────────── */
  section { padding: var(--pad-y) 0; position: relative; }
  .hero { padding-top: 64px; padding-bottom: 48px; }

  .hero-meta {
    display: flex; gap: 18px; color: var(--ink-dim);
    font-size: 12px; margin-bottom: 28px;
    border-bottom: 1px dashed var(--rule); padding-bottom: 14px;
  }
  .hero-meta span + span { position: relative; padding-left: 18px; }
  .hero-meta span + span::before {
    content: ""; position: absolute; left: 0; top: 50%; width: 8px; height: 1px; background: var(--ink-faint);
  }
  .blink { animation: blink 1.1s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0; } }

  .hero h1 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(56px, 12.5vw, 188px);
    line-height: 0.88;
    letter-spacing: -0.04em;
    margin: 0;
    text-transform: lowercase;
  }
  .hero h1 .slash { color: var(--accent); }
  .hero h1 .ghost { color: color-mix(in oklab, var(--ink) 22%, transparent); }
  .hero h1 .caret {
    display: inline-block;
    width: 0.5ch;
    height: 0.82em;
    vertical-align: -0.08em;
    background: var(--accent);
    margin-left: 0.04em;
    animation: blink 1.05s steps(1) infinite;
  }
  @media (prefers-reduced-motion: reduce) {
    .hero h1 .caret { animation: none; }
  }

  .hero-sub {
    margin-top: 36px;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: end;
  }
  .tagline {
    font-size: clamp(18px, 1.6vw, 22px);
    line-height: 1.35;
    max-width: 46ch;
    color: var(--ink);
  }
  .tagline em {
    font-style: normal;
    background: color-mix(in oklab, var(--accent) 24%, transparent);
    color: var(--ink);
    padding: 1px 4px;
  }
  .hero-actions {
    display: flex; gap: 10px; flex-wrap: wrap;
    justify-self: end; align-self: end;
  }

  .btn {
    font-family: var(--mono); font-size: 13px; font-weight: 600;
    padding: 12px 18px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: var(--accent-ink);
    cursor: pointer;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    display: inline-flex; align-items: center; gap: 10px;
    transition: transform .12s ease;
  }
  .btn:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
  html[data-theme="light"] .btn:hover { box-shadow: 4px 4px 0 var(--ink); }
  .btn.ghost {
    background: transparent; color: var(--ink); border-color: var(--rule);
  }
  .btn.ghost:hover { border-color: var(--ink); box-shadow: 4px 4px 0 var(--accent); }
  .btn .k { opacity: 0.7; font-weight: 400; }

  /* ─────────────── status strip ─────────────── */
  .strip {
    margin-top: 72px;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    font-size: 12px;
  }
  .strip > div {
    padding: 14px 18px;
    border-right: 1px solid var(--rule);
    display: flex; flex-direction: column; gap: 4px;
  }
  .strip > div:last-child { border-right: none; }
  .strip .k { color: var(--ink-dim); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
  .strip .v { color: var(--ink); font-weight: 600; }
  .strip .v .dot { color: var(--accent); margin-right: 6px; }

  /* ─────────────── section headings ─────────────── */
  .section-head {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    gap: 18px;
    align-items: baseline;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 14px;
    margin-bottom: 56px;
  }
  .section-head .num {
    color: var(--accent);
    font-size: 12px; font-weight: 700; letter-spacing: 0.1em;
  }
  .section-head h2 {
    margin: 0;
    font-size: clamp(28px, 3.2vw, 44px);
    line-height: 1.05;
    letter-spacing: -0.02em;
    font-weight: 700;
  }
  .section-head h2 .dim { color: var(--ink-dim); font-weight: 400; }
  .section-head .meta { color: var(--ink-dim); font-size: 12px; text-align: right; }

  /* ─────────────── terminal demo ─────────────── */
  .terminal {
    border: 1px solid var(--rule);
    background: var(--bg-2);
    font-size: 13px;
    line-height: 1.6;
    position: relative;
  }
  .terminal-bar {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 14px;
    border-bottom: 1px solid var(--rule);
    color: var(--ink-dim);
    font-size: 11.5px;
  }
  .terminal-bar .dots { display: flex; gap: 6px; }
  .terminal-bar .dots i {
    width: 10px; height: 10px; border: 1px solid var(--ink-faint);
    display: inline-block;
  }
  .terminal-body { padding: 18px 20px; min-height: 320px; }
  .terminal-body .line { white-space: pre-wrap; }
  .terminal-body .prompt { color: var(--accent); }
  .terminal-body .user { color: var(--ink); }
  .terminal-body .out { color: var(--ink-dim); }
  .terminal-body .ok { color: var(--accent); }
  .terminal-body .warn { color: var(--warn); }
  .terminal-body .fn { color: color-mix(in oklab, var(--accent) 75%, var(--ink)); }
  .caret { display: inline-block; width: 8px; height: 14px; background: var(--accent); transform: translateY(2px); animation: blink 1.05s steps(1) infinite; }

  /* ─────────────── features grid ─────────────── */
  .features {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
  }
  .feat {
    grid-column: span 4;
    background: var(--bg);
    padding: 28px 26px 32px;
    min-height: 260px;
    display: flex; flex-direction: column;
    position: relative;
  }
  .feat.wide { grid-column: span 6; }
  .feat.tall { grid-column: span 4; min-height: 340px; }
  .feat.huge { grid-column: span 8; min-height: 340px; }
  .feat .idx {
    color: var(--ink-faint);
    font-size: 11px; letter-spacing: 0.1em;
    margin-bottom: 18px;
    display: flex; justify-content: space-between;
  }
  .feat .idx .tag { color: var(--accent); }
  .feat h3 {
    margin: 0 0 10px;
    font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
  }
  .feat p { margin: 0; color: var(--ink-dim); font-size: 13px; line-height: 1.6; max-width: 42ch; }
  .feat .art {
    margin-top: auto; padding-top: 22px;
    color: var(--ink-dim);
    font-size: 11.5px; line-height: 1.35;
    white-space: pre;
    overflow: hidden;
  }
  .feat .art.accent { color: var(--accent); }

  /* huge cards: text left, art right (side-by-side) */
  .feat.huge {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, auto);
    column-gap: 40px;
    align-items: start;
  }
  .feat.huge .idx { grid-column: 1 / -1; }
  .feat.huge h3,
  .feat.huge p { grid-column: 1; }
  .feat.huge .art {
    grid-column: 2;
    grid-row: 2 / span 2;
    align-self: center;
    margin-top: 0;
    padding-top: 0;
  }
  @media (max-width: 760px) {
    .feat.huge { grid-template-columns: 1fr; }
    .feat.huge .art { grid-column: 1; grid-row: auto; margin-top: auto; padding-top: 22px; }
  }

  /* ─────────────── modes strip ─────────────── */
  .modes {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--rule);
  }
  .mode {
    padding: 32px 24px 36px;
    border-right: 1px solid var(--rule);
    display: flex;
    flex-direction: column;
    position: relative;
  }
  .mode:last-child { border-right: none; }
  .mode .glyph {
    font-size: 28px; font-weight: 700; color: var(--accent);
    margin-bottom: 20px; font-family: var(--display);
  }
  .mode h4 { margin: 0 0 8px; font-size: 15px; font-weight: 700; }
  .mode p { margin: 0 0 18px; font-size: 12.5px; color: var(--ink-dim); line-height: 1.6; }
  .mode .cmd {
    margin-top: auto;
    font-size: 11.5px;
    color: var(--ink);
    background: color-mix(in oklab, var(--ink) 6%, transparent);
    border-left: 2px solid var(--accent);
    padding: 6px 10px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }

  /* ─────────────── llm bench ─────────────── */
  .llm-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    border: 1px solid var(--rule);
  }
  .llm {
    border-right: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 22px 18px;
    display: flex; flex-direction: column; gap: 6px;
    min-height: 120px;
  }
  .llm:nth-child(6n) { border-right: none; }
  .llm:nth-last-child(-n+6) { border-bottom: none; }
  .llm .n { font-weight: 700; font-size: 14px; letter-spacing: -0.01em; }
  .llm .s { color: var(--ink-dim); font-size: 11.5px; }
  .llm .t {
    margin-top: auto;
    color: var(--accent);
    font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase;
  }
  .llm.local .t { color: var(--warn); }
  .llm.self .t { color: color-mix(in oklab, var(--accent) 65%, var(--ink)); }

  /* ─────────────── macro / scheduler block ─────────────── */
  .splits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .card {
    border: 1px solid var(--rule);
    padding: 24px;
    background: var(--bg);
  }
  .card h3 {
    margin: 0 0 8px; font-size: 18px; font-weight: 700; letter-spacing: -0.01em;
    display: flex; align-items: center; gap: 10px;
  }
  .card h3 .tag {
    font-size: 10.5px; color: var(--accent); border: 1px solid var(--accent);
    padding: 2px 6px; letter-spacing: 0.1em; font-weight: 500;
  }
  .card p.lede { margin: 0 0 20px; color: var(--ink-dim); font-size: 13px; max-width: 44ch; }

  .macro-list { font-size: 12.5px; }
  .macro-row {
    display: grid; grid-template-columns: 22px 1fr auto;
    gap: 10px; align-items: center;
    padding: 8px 0;
    border-bottom: 1px dashed var(--rule);
  }
  .macro-row:last-child { border-bottom: none; }
  .macro-row .i { color: var(--accent); font-weight: 600; }
  .macro-row .n { color: var(--ink); }
  .macro-row .n .s { color: var(--ink-dim); margin-left: 8px; }
  .macro-row .k { color: var(--ink-faint); font-size: 11px; }

  .sched {
    font-size: 12.5px;
    display: grid; gap: 6px;
  }
  .sched .row {
    display: grid; grid-template-columns: 90px 1fr auto;
    gap: 12px;
    padding: 10px 12px;
    border: 1px solid var(--rule);
    align-items: center;
  }
  .sched .cron { color: var(--accent); }
  .sched .name { color: var(--ink); }
  .sched .name small { color: var(--ink-dim); display: block; font-size: 10.5px; margin-top: 2px; }
  .sched .state {
    font-size: 10.5px; letter-spacing: 0.08em;
    color: var(--ink-dim);
  }
  .sched .state.on { color: var(--accent); }

  /* ─────────────── themes section ─────────────── */
  .themes-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 28px;
    align-items: start;
  }
  .themes-copy h3 {
    font-size: clamp(22px, 2.4vw, 30px);
    font-weight: 700; letter-spacing: -0.02em;
    margin: 0 0 14px; line-height: 1.15;
  }
  .themes-copy h3 em {
    font-style: normal;
    background: color-mix(in oklab, var(--accent) 22%, transparent);
    padding: 0 4px;
  }
  .themes-copy > p {
    margin: 0 0 16px; color: var(--ink-dim);
    font-size: 13.5px; line-height: 1.65; max-width: 48ch;
  }
  .themes-copy ul.bullets {
    list-style: none; padding: 0; margin: 4px 0 0;
    display: grid; gap: 6px; font-size: 12.5px;
  }
  .themes-copy ul.bullets li {
    padding-left: 16px; position: relative;
    color: var(--ink-dim);
  }
  .themes-copy ul.bullets li::before {
    content: "◂"; position: absolute; left: 0; color: var(--accent);
  }
  .themes-copy ul.bullets li b { color: var(--ink); font-weight: 500; }

  .themes-code {
    border: 1px solid var(--rule);
    background: var(--bg-2);
  }
  .themes-code .bar {
    padding: 8px 14px; border-bottom: 1px solid var(--rule);
    font-size: 11.5px; color: var(--ink-dim);
    display: flex; gap: 10px; align-items: center;
  }
  .themes-code .bar .tab {
    padding: 2px 8px; border: 1px solid var(--rule);
    color: var(--ink-dim);
  }
  .themes-code .bar .tab.on { color: var(--accent); border-color: var(--accent); }
  .themes-code pre {
    margin: 0; padding: 16px 18px;
    font: inherit; font-size: 11.5px; line-height: 1.65;
    color: var(--ink); overflow-x: auto;
  }
  .themes-code pre .c { color: var(--ink-faint); }
  .themes-code pre .k { color: var(--accent); }
  .themes-code pre .v { color: color-mix(in oklab, var(--accent) 65%, var(--ink)); }
  .themes-code pre .s { color: var(--ink); }

  .themes-strip {
    margin-top: 28px;
    border: 1px solid var(--rule);
    padding: 16px 18px;
  }
  .themes-strip-head {
    font-size: 10.5px; color: var(--ink-faint);
    letter-spacing: 0.12em; text-transform: uppercase;
    margin-bottom: 10px;
  }
  .themes-strip-head code {
    color: var(--ink-dim); text-transform: none; letter-spacing: 0;
  }
  .themes-chips {
    display: flex; flex-wrap: wrap; gap: 6px;
  }
  .tchip {
    font-family: var(--mono);
    font-size: 11.5px;
    padding: 3px 10px;
    border: 1px solid color-mix(in oklab, var(--accent) 40%, var(--rule));
    color: var(--accent);
    background: color-mix(in oklab, var(--accent) 10%, transparent);
  }
  .tchip.faded {
    color: var(--ink-faint);
    border-color: var(--rule);
    background: transparent;
  }
  @media (max-width: 900px) {
    .themes-grid { grid-template-columns: 1fr; }
  }

  /* ─────────────── footer ─────────────── */
  footer {
    border-top: 1px solid var(--rule);
    padding: 60px 0 32px;
    color: var(--ink-dim);
    font-size: 12px;
  }
  .foot {
    display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
  }
  .foot h5 {
    margin: 0 0 12px; color: var(--ink-dim);
    font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
    font-weight: 500;
  }
  .foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
  .foot ul a:hover { color: var(--accent); }
  .foot-bottom {
    display: flex; justify-content: space-between; align-items: center;
    border-top: 1px dashed var(--rule); padding-top: 20px;
    font-size: 11px; color: var(--ink-faint);
  }
  .foot-bottom .dot { color: var(--accent); }

  /* ─────────────── cascade diagram ─────────────── */
  .cascade {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
    border: 1px solid var(--rule);
  }
  .casc-col {
    padding: 24px 22px 26px;
    border-right: 1px solid var(--rule);
    position: relative;
    background: var(--bg);
  }
  .casc-col:last-child { border-right: none; }
  .casc-col .tier {
    font-size: 10.5px; color: var(--ink-faint);
    letter-spacing: 0.12em; text-transform: uppercase;
    margin-bottom: 6px;
  }
  .casc-col .tname {
    font-size: 18px; font-weight: 700; color: var(--ink);
    margin-bottom: 4px; letter-spacing: -0.01em;
    display: flex; align-items: center; gap: 10px;
  }
  .casc-col .tname .g { color: var(--accent); font-size: 16px; }
  .casc-col .scope { color: var(--ink-dim); font-size: 12px; margin-bottom: 18px; max-width: 34ch; }
  .casc-col .kvlist { font-size: 12px; display: grid; gap: 6px; }
  .casc-col .kvlist .k {
    display: grid; grid-template-columns: 110px 1fr;
    padding: 4px 0;
    border-bottom: 1px dashed var(--rule);
  }
  .casc-col .kvlist .k:last-child { border-bottom: none; }
  .casc-col .kvlist .k .n { color: var(--ink-dim); }
  .casc-col .kvlist .k .v { color: var(--ink); }
  .casc-col .kvlist .k.over .v { color: var(--accent); }
  .casc-col .kvlist .k.over .n::after { content: " ↯"; color: var(--accent); }
  .casc-col .kvlist .k.inherit .v { color: var(--ink-faint); }
  .casc-col .arrow {
    position: absolute; top: 34px; right: -10px;
    width: 20px; height: 20px;
    display: grid; place-items: center;
    color: var(--accent);
    background: var(--bg); font-size: 14px;
    z-index: 2;
  }
  .casc-col:last-child .arrow { display: none; }

  .persona {
    margin-top: 32px;
    border: 1px solid var(--rule);
    display: grid; grid-template-columns: 260px 1fr;
  }
  .persona.single { grid-template-columns: 1fr; }
  .persona-lede { margin: 0 0 14px; color: var(--ink-dim); font-size: 12.5px; line-height: 1.6; max-width: 68ch; }
  .persona-meta {
    margin-top: 16px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
    font-size: 11px; letter-spacing: 0.04em; color: var(--ink-dim);
  }
  .persona-meta .sep { color: var(--ink-faint); }
  .persona-meta > span:not(.sep) {
    border: 1px solid var(--rule); padding: 3px 10px; color: var(--ink);
    background: color-mix(in oklab, var(--ink) 3%, transparent);
  }
  .persona-side {
    border-right: 1px solid var(--rule);
    padding: 16px;
    background: color-mix(in oklab, var(--bg) 70%, var(--bg-2));
  }
  .persona-side h6 {
    margin: 0 0 10px;
    font-size: 10.5px; color: var(--ink-faint);
    letter-spacing: 0.12em; text-transform: uppercase;
  }
  .persona-opt {
    padding: 10px 12px;
    border: 1px solid var(--rule);
    margin-bottom: 6px;
    font-size: 12px; color: var(--ink-dim);
    cursor: pointer;
  }
  .persona-opt.active {
    border-color: var(--accent);
    color: var(--ink);
    background: color-mix(in oklab, var(--accent) 10%, transparent);
  }
  .persona-opt .name { color: var(--ink); font-weight: 500; font-size: 13px; display: block; margin-bottom: 2px; }
  .persona-opt.active .name { color: var(--accent); }
  .persona-body {
    padding: 18px 22px;
    font-size: 12.5px; line-height: 1.6;
  }
  .persona-body h5 {
    margin: 0 0 10px;
    color: var(--ink); font-size: 14px; font-weight: 700;
    display: flex; align-items: center; gap: 10px;
  }
  .persona-body h5 .badge {
    color: var(--accent); border: 1px solid var(--accent);
    padding: 1px 6px; font-size: 10px; letter-spacing: 0.08em;
  }
  .persona-body pre {
    margin: 0;
    font: inherit; white-space: pre-wrap;
    color: var(--ink-dim); font-size: 12px;
    border-left: 2px solid var(--accent);
    padding: 8px 14px;
    background: color-mix(in oklab, var(--ink) 4%, transparent);
  }
  .persona-body .traits {
    margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px;
    font-size: 11px;
  }
  .persona-body .traits span {
    border: 1px solid var(--rule); padding: 2px 8px; color: var(--ink-dim);
  }

  /* ─────────────── runners (ai backends) ─────────────── */
  .runners-head {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 18px;
    align-items: end;
    margin-bottom: 22px;
  }
  .runners-head h3 {
    font-size: clamp(20px, 2vw, 26px);
    font-weight: 700; letter-spacing: -0.01em;
    margin: 0 0 6px; line-height: 1.2;
  }
  .runners-head h3 em {
    font-style: normal;
    background: color-mix(in oklab, var(--accent) 22%, transparent);
    padding: 0 4px;
  }
  .runners-head p {
    margin: 0; color: var(--ink-dim); font-size: 13px; max-width: 62ch; line-height: 1.6;
  }
  .runners-head .picker {
    display: flex; gap: 0; border: 1px solid var(--rule); font-size: 11px;
    color: var(--ink-dim); letter-spacing: 0.06em; text-transform: uppercase;
  }
  .runners-head .picker span { padding: 6px 12px; border-right: 1px solid var(--rule); }
  .runners-head .picker span:last-child { border-right: none; }
  .runners-head .picker span.on { color: var(--accent); background: color-mix(in oklab, var(--accent) 10%, transparent); }

  .runners {
    display: grid;
    grid-template-columns: 1fr 56px 1fr;
    gap: 0;
    border: 1px solid var(--rule);
    background: var(--bg);
    position: relative;
  }
  .runner {
    padding: 26px 28px 28px;
    display: grid;
    grid-template-rows: auto auto auto 1fr auto;
    gap: 14px;
    min-height: 440px;
    position: relative;
  }
  .runner.a { border-right: none; }
  .runner.b { border-left: none; }
  .runner .tier {
    display: flex; justify-content: space-between; align-items: baseline;
    color: var(--ink-faint);
    font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase;
  }
  .runner .tier .tag {
    color: var(--accent); border: 1px solid var(--accent);
    padding: 1px 6px; letter-spacing: 0.08em; font-size: 10px;
  }
  .runner.b .tier .tag { color: var(--warn); border-color: var(--warn); }
  .runner .name {
    font-family: var(--display);
    font-size: 28px; font-weight: 700; letter-spacing: -0.02em;
    color: var(--ink); line-height: 1;
    display: flex; align-items: baseline; gap: 10px;
  }
  .runner .name .v { font-size: 11px; color: var(--ink-faint); font-weight: 400; letter-spacing: 0.04em; }
  .runner .pitch {
    font-size: 13.5px; color: var(--ink); line-height: 1.55;
    max-width: 40ch;
  }
  .runner .pitch b { color: var(--accent); font-weight: 500; }
  .runner.b .pitch b { color: var(--warn); }
  .runner .spec {
    display: grid; gap: 0;
    border-top: 1px dashed var(--rule);
    padding-top: 14px;
    font-size: 12px;
  }
  .runner .spec .r {
    display: grid; grid-template-columns: 100px 1fr;
    padding: 4px 0;
    border-bottom: 1px dashed var(--rule);
  }
  .runner .spec .r:last-child { border-bottom: none; }
  .runner .spec .r .k { color: var(--ink-dim); font-size: 11px; letter-spacing: 0.04em; }
  .runner .spec .r .v { color: var(--ink); }
  .runner .spec .r .v .on { color: var(--accent); }
  .runner.b .spec .r .v .on { color: var(--warn); }
  .runner .spec .r .v .off { color: var(--ink-faint); }
  .runner .foot {
    margin-top: 4px;
    font-size: 11px;
    color: var(--ink-dim);
    border-left: 2px solid var(--accent);
    padding: 6px 10px;
    background: color-mix(in oklab, var(--ink) 4%, transparent);
    white-space: pre-wrap;
    font-family: var(--mono);
  }
  .runner.b .foot { border-left-color: var(--warn); }
  .runner .foot .c { color: var(--ink-faint); }
  .runner .foot .k { color: var(--accent); }
  .runner.b .foot .k { color: var(--warn); }

  /* center switch */
  .runners .vs {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px;
    border-left: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
    background: var(--bg-2);
    position: relative;
  }
  .runners .vs .plug {
    font-size: 11px; color: var(--ink-faint);
    letter-spacing: 0.12em; text-transform: uppercase;
    writing-mode: vertical-rl; transform: rotate(180deg);
    padding: 8px 0;
  }
  .runners .vs .socket {
    width: 14px; height: 14px;
    border: 1px solid var(--accent);
    background: color-mix(in oklab, var(--accent) 20%, transparent);
  }
  .runners .vs .socket.b { border-color: var(--warn); background: color-mix(in oklab, var(--warn) 20%, transparent); }
  .runners .vs .wire {
    flex: 1; width: 1px; min-height: 30px;
    background: repeating-linear-gradient(to bottom, var(--ink-faint) 0 3px, transparent 3px 6px);
  }
  .runners .vs .label {
    font-size: 9.5px; color: var(--ink-faint);
    letter-spacing: 0.1em;
    writing-mode: vertical-rl; transform: rotate(180deg);
  }

  .runner-matrix {
    margin-top: 18px;
    border: 1px solid var(--rule);
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    font-size: 12px;
  }
  .runner-matrix > div {
    padding: 10px 14px;
    border-right: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }
  .runner-matrix > div:nth-child(3n) { border-right: none; }
  .runner-matrix > div:nth-last-child(-n+3) { border-bottom: none; }
  .runner-matrix .h {
    color: var(--ink-faint); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
    background: color-mix(in oklab, var(--bg) 50%, var(--bg-2));
  }
  .runner-matrix .h.a { color: var(--accent); }
  .runner-matrix .h.b { color: var(--warn); }
  .runner-matrix .k { color: var(--ink-dim); }
  .runner-matrix .v { color: var(--ink); }
  .runner-matrix .v.dot::before { content: "● "; color: var(--accent); font-size: 9px; }
  .runner-matrix .v.dot.warn::before { color: var(--warn); }
  .runner-matrix .v.no { color: var(--ink-faint); }
  .runner-matrix .v.no::before { content: "○ "; color: var(--ink-faint); }

  @media (max-width: 900px) {
    .runners { grid-template-columns: 1fr; }
    .runner.a { border-right: 1px solid var(--rule); border-bottom: none; }
    .runner.b { border-left: 1px solid var(--rule); border-top: 1px solid var(--rule); }
    .runners .vs { border: 1px solid var(--rule); border-left: 0; border-right: 0; padding: 10px 0; flex-direction: row; }
    .runners .vs .plug, .runners .vs .label { writing-mode: horizontal-tb; transform: none; padding: 0 6px; }
    .runners .vs .wire { min-height: 0; width: 30px; height: 1px; background: repeating-linear-gradient(to right, var(--ink-faint) 0 3px, transparent 3px 6px); }
    .runner-matrix { grid-template-columns: 1fr; }
    .runner-matrix > div { border-right: none; }
  }

  /* ─────────────── byof (bring your own frontend) ─────────────── */
  .byof {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
  }
  .byof-copy h3 {
    font-size: clamp(22px, 2.5vw, 32px);
    font-weight: 700; letter-spacing: -0.02em;
    margin: 0 0 16px; line-height: 1.1;
  }
  .byof-copy h3 em {
    font-style: normal;
    background: color-mix(in oklab, var(--accent) 22%, transparent);
    padding: 0 4px;
  }
  .byof-copy p {
    margin: 0 0 14px; color: var(--ink-dim); font-size: 13.5px; line-height: 1.65;
    max-width: 48ch;
  }
  .byof-copy ul {
    margin: 10px 0 0; padding: 0; list-style: none;
    display: grid; gap: 4px; font-size: 12.5px;
  }
  .byof-copy ul li { padding-left: 16px; position: relative; color: var(--ink-dim); }
  .byof-copy ul li::before { content: "◂"; position: absolute; left: 0; color: var(--accent); }
  .byof-copy ul li b { color: var(--ink); font-weight: 500; }

  .byof-code {
    border: 1px solid var(--rule);
    background: var(--bg-2);
  }
  .byof-code .bar {
    padding: 8px 14px; border-bottom: 1px solid var(--rule);
    font-size: 11.5px; color: var(--ink-dim);
    display: flex; gap: 10px; align-items: center;
  }
  .byof-code .bar .tab {
    padding: 2px 8px; border: 1px solid var(--rule);
    color: var(--ink-dim);
  }
  .byof-code .bar .tab.on { color: var(--accent); border-color: var(--accent); }
  .byof-code pre {
    margin: 0; padding: 16px 18px;
    font: inherit; font-size: 11.5px; line-height: 1.6;
    color: var(--ink); overflow-x: auto;
  }
  .byof-code pre .c { color: var(--ink-faint); }
  .byof-code pre .k { color: var(--accent); }
  .byof-code pre .s { color: color-mix(in oklab, var(--accent) 65%, var(--ink)); }
  .byof-code pre .v { color: var(--ink-dim); }

  .stack-diagram {
    margin-top: 28px;
    display: grid; grid-template-columns: 1fr; gap: 0;
    border: 1px solid var(--rule);
  }
  .stack-row {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    padding: 12px 16px;
    border-bottom: 1px solid var(--rule);
    align-items: center;
    font-size: 12px;
  }
  .stack-row:last-child { border-bottom: none; }
  .stack-row .lvl {
    color: var(--ink-faint); font-size: 10.5px;
    letter-spacing: 0.12em; text-transform: uppercase;
  }
  .stack-row .nm { color: var(--ink); font-weight: 500; }
  .stack-row .nm small { color: var(--ink-dim); font-weight: 400; margin-left: 8px; }
  .stack-row .tag {
    color: var(--accent); border: 1px solid var(--accent);
    font-size: 10.5px; padding: 1px 6px; letter-spacing: 0.08em;
  }
  .stack-row.optional { background: color-mix(in oklab, var(--ink) 3%, transparent); }
  .stack-row.optional .nm { color: var(--ink-dim); font-style: italic; }
  .stack-row.optional .tag { color: var(--ink-dim); border-color: var(--rule); }
  .stack-row.core .nm::before {
    content: "◆"; color: var(--accent); margin-right: 8px;
  }

  @media (max-width: 900px) {
    .cascade { grid-template-columns: 1fr; }
    .casc-col { border-right: none; border-bottom: 1px solid var(--rule); }
    .casc-col .arrow { display: none; }
    .persona { grid-template-columns: 1fr; }
    .persona-side { border-right: none; border-bottom: 1px solid var(--rule); }
    .byof { grid-template-columns: 1fr; }
    .stack-row { grid-template-columns: 1fr; gap: 4px; }
  }

  /* ─────────────── big ascii marquee ─────────────── */
  .ascii-row {
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    overflow: hidden;
    white-space: nowrap;
    padding: 10px 0;
    font-size: 12px; color: var(--ink-faint);
    letter-spacing: 0.08em;
  }
  .ascii-row .track { display: inline-block; animation: scroll 60s linear infinite; }
  @keyframes scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

  /* ─────────────── screenshot viewer ─────────────── */
  .shotframe {
    border: 1px solid var(--rule);
    background: var(--bg-2);
    box-shadow: 0 30px 60px -20px rgba(0,0,0,0.55), 0 0 0 1px var(--rule);
    overflow: hidden;
  }
  html[data-theme="light"] .shotframe { box-shadow: 0 30px 60px -30px rgba(0,0,0,0.22), 0 0 0 1px var(--rule); }
  .shotframe-bar {
    display: flex; align-items: center; gap: 14px;
    padding: 8px 14px;
    border-bottom: 1px solid var(--rule);
    background: color-mix(in oklab, var(--bg) 60%, var(--bg-2));
    font-size: 11.5px;
    color: var(--ink-dim);
  }
  .shotframe-bar .dots { display: flex; gap: 6px; }
  .shotframe-bar .dots i {
    width: 10px; height: 10px;
    border: 1px solid var(--ink-faint);
    display: inline-block;
  }
  .shotframe-bar .title {
    flex: 1;
    color: var(--ink);
    font-family: var(--mono);
    letter-spacing: 0.02em;
  }
  .shot-tabs { display: flex; gap: 0; }
  .shot-tab {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    padding: 5px 12px;
    background: transparent;
    border: 1px solid var(--rule);
    color: var(--ink-dim);
    cursor: pointer;
  }
  .shot-tab + .shot-tab { border-left: 0; }
  .shot-tab:hover { color: var(--ink); }
  .shot-tab.on {
    color: var(--accent-ink);
    background: var(--accent);
    border-color: var(--accent);
    font-weight: 600;
  }
  .shotframe-canvas { background: var(--bg); line-height: 0; }
  .shotframe-canvas picture { display: block; }
  .shotframe-canvas picture[hidden] { display: none; }
  .shotframe-canvas img { width: 100%; height: auto; display: block; user-select: none; }
  @media (max-width: 720px) {
    .shotframe-bar { flex-wrap: wrap; gap: 8px; }
    .shotframe-bar .title { order: 3; width: 100%; }
  }

  /* ─────────────── app window mockup (legacy — hero split mini only) ─────────────── */
  .app {
    border: 1px solid var(--rule);
    background: var(--bg-2);
    position: relative;
    box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6), 0 0 0 1px var(--rule);
    font-size: 12.5px;
  }
  html[data-theme="light"] .app { box-shadow: 0 30px 60px -30px rgba(0,0,0,0.2), 0 0 0 1px var(--rule); }

  .app-titlebar {
    display: flex; align-items: center; gap: 12px;
    padding: 7px 12px;
    border-bottom: 1px solid var(--rule);
    background: color-mix(in oklab, var(--bg) 60%, var(--bg-2));
    font-size: 11.5px; color: var(--ink-dim);
  }
  .app-titlebar .icons { display: flex; gap: 14px; color: var(--ink-dim); font-size: 13px; }
  .app-titlebar .icons i { cursor: pointer; font-style: normal; }
  .app-titlebar .icons i:hover { color: var(--accent); }
  .app-titlebar .path {
    flex: 1;
    color: var(--ink);
    padding: 3px 10px;
    border: 1px solid var(--rule);
    background: var(--bg);
    font-size: 11.5px;
  }
  .app-titlebar .model-chip {
    color: var(--accent); border: 1px solid var(--accent);
    padding: 2px 8px; font-size: 11px; font-weight: 500;
  }

  .app-body {
    display: grid;
    grid-template-columns: 240px 1fr 300px;
    min-height: 560px;
  }

  /* sidebar */
  .app-side {
    border-right: 1px solid var(--rule);
    padding: 14px 0;
    background: color-mix(in oklab, var(--bg) 70%, var(--bg-2));
    font-size: 12px;
    display: flex; flex-direction: column;
    overflow: hidden;
  }
  .app-side .side-search {
    margin: 0 12px 12px;
    padding: 6px 10px;
    border: 1px solid var(--rule);
    color: var(--ink-faint);
    font-size: 11.5px;
    display: flex; align-items: center; gap: 8px;
  }
  .app-side .side-search .kbd {
    margin-left: auto;
    font-size: 10px;
    border: 1px solid var(--rule);
    padding: 1px 5px; color: var(--ink-faint);
  }
  .app-side .group-label {
    padding: 10px 14px 6px;
    font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--ink-faint);
  }
  .app-side .row {
    display: flex; align-items: center; gap: 8px;
    padding: 4px 14px;
    cursor: pointer;
    color: var(--ink-dim);
    position: relative;
    font-size: 12px;
  }
  .app-side .row.active {
    color: var(--ink);
    background: color-mix(in oklab, var(--accent) 12%, transparent);
  }
  .app-side .row.active::before {
    content: ""; position: absolute; left: 0; top: 4px; bottom: 4px;
    width: 2px; background: var(--accent);
  }
  .app-side .row .g {
    width: 16px; color: var(--accent); font-weight: 700; text-align: center;
  }
  .app-side .row .n {
    flex: 1;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .app-side .row .meta {
    color: var(--ink-faint); font-size: 10.5px;
    border: 1px solid var(--rule); padding: 0px 5px; min-width: 18px; text-align: center;
  }
  .app-side .row.active .meta { color: var(--accent); }
  .app-side .row[hidden] { display: none; }

  /* main chat */
  .app-main {
    display: flex; flex-direction: column;
    min-width: 0;
    background: var(--bg);
  }
  .app-crumbs {
    padding: 10px 18px;
    border-bottom: 1px solid var(--rule);
    font-size: 11.5px; color: var(--ink-dim);
    display: flex; align-items: center; gap: 10px;
  }
  .app-crumbs .chip-m {
    border: 1px solid var(--rule);
    padding: 2px 7px;
    color: var(--ink);
  }
  .app-crumbs .chip-m .tag { color: var(--accent); margin-right: 4px; }
  .app-crumbs .sep { color: var(--ink-faint); }

  .app-scroll {
    flex: 1;
    padding: 20px 24px 8px;
    display: flex; flex-direction: column; gap: 18px;
    overflow: hidden;
  }
  .msg { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
  .msg .av {
    width: 30px; height: 30px;
    border: 1px solid var(--rule);
    display: grid; place-items: center;
    font-size: 11px; color: var(--ink-dim); font-weight: 700;
    background: var(--bg-2);
  }
  .msg.me .av { color: var(--accent); border-color: color-mix(in oklab, var(--accent) 50%, var(--rule)); }
  .msg .bubble { min-width: 0; }
  .msg .who {
    font-size: 11px; color: var(--ink-dim);
    margin-bottom: 4px; letter-spacing: 0.04em;
    display: flex; gap: 10px; align-items: center;
  }
  .msg .who .model {
    border: 1px solid var(--rule);
    padding: 1px 6px; color: var(--accent); font-size: 10px;
  }
  .msg .txt {
    color: var(--ink); font-size: 13px; line-height: 1.6;
    max-width: 62ch;
  }
  .msg .txt code {
    background: color-mix(in oklab, var(--ink) 8%, transparent);
    padding: 1px 5px; border: 1px solid var(--rule);
    font-size: 12px;
  }

  /* inline tool cards inside chat */
  .tool-card {
    margin-top: 10px;
    border: 1px solid var(--rule);
    background: color-mix(in oklab, var(--bg) 40%, var(--bg-2));
    overflow: hidden;
  }
  .tool-head {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--rule);
    font-size: 11px; color: var(--ink-dim);
    letter-spacing: 0.04em;
  }
  .tool-head .tag {
    color: var(--accent); font-weight: 700;
    border: 1px solid var(--accent);
    padding: 1px 6px; font-size: 10px;
  }
  .tool-head .path { color: var(--ink); font-weight: 500; }
  .tool-head .right { margin-left: auto; color: var(--ink-faint); font-size: 10.5px; display: flex; gap: 12px; }
  .tool-body { padding: 14px; }

  /* scad viewer */
  .scad-view {
    display: grid;
    grid-template-columns: 1fr 160px;
    gap: 12px;
  }
  .scad-canvas {
    position: relative;
    aspect-ratio: 16 / 9;
    background:
      radial-gradient(ellipse at 30% 30%, color-mix(in oklab, var(--accent) 25%, transparent), transparent 60%),
      linear-gradient(180deg, color-mix(in oklab, var(--ink) 4%, transparent), transparent);
    border: 1px solid var(--rule);
    overflow: hidden;
  }
  .scad-canvas svg { width: 100%; height: 100%; display: block; }
  .scad-canvas .hud {
    position: absolute; top: 8px; left: 10px;
    font-size: 10px; color: var(--ink-faint);
    letter-spacing: 0.06em;
  }
  .scad-canvas .hud.right { left: auto; right: 10px; text-align: right; }
  .scad-canvas .gizmo {
    position: absolute; bottom: 8px; left: 10px;
    font-size: 10px; color: var(--accent);
    letter-spacing: 0.06em;
  }
  .scad-params {
    border: 1px solid var(--rule);
    padding: 10px;
    font-size: 11px; color: var(--ink-dim);
    background: var(--bg);
  }
  .scad-params .pr { display: flex; justify-content: space-between; padding: 3px 0; }
  .scad-params .pr b { color: var(--ink); font-weight: 500; }
  .scad-params .pr .v { color: var(--accent); }

  /* diff card */
  .diff-card pre {
    margin: 0; font: inherit; font-size: 11.5px; line-height: 1.55;
    white-space: pre; overflow-x: auto;
    color: var(--ink-dim);
  }
  .diff-card .add { color: var(--accent); }
  .diff-card .del { color: var(--danger); }
  .diff-card .ctx { color: var(--ink-faint); }

  /* composer */
  .app-composer {
    border-top: 1px solid var(--rule);
    padding: 12px 16px 14px;
    background: color-mix(in oklab, var(--bg) 80%, var(--bg-2));
  }
  .composer-inner {
    border: 1px solid var(--rule);
    background: var(--bg);
    padding: 10px 12px;
    display: grid; gap: 8px;
  }
  .composer-inner .type {
    color: var(--ink);
    min-height: 20px;
    display: flex; align-items: center; gap: 6px;
  }
  .composer-inner .type .ph { color: var(--ink-faint); }
  .composer-inner .type .ca {
    display: inline-block; width: 7px; height: 13px;
    background: var(--accent); animation: blink 1s steps(1) infinite;
  }
  .composer-inner .bar {
    display: flex; align-items: center; gap: 10px;
    font-size: 11px; color: var(--ink-dim);
    border-top: 1px dashed var(--rule);
    padding-top: 8px;
  }
  .composer-inner .bar .pill {
    border: 1px solid var(--rule); padding: 2px 7px;
    color: var(--ink-dim);
  }
  .composer-inner .bar .pill.on {
    color: var(--accent); border-color: var(--accent);
  }
  .composer-inner .bar .send {
    margin-left: auto;
    color: var(--accent); font-weight: 700;
    display: flex; align-items: center; gap: 6px;
  }
  .composer-inner .bar .send .kbd {
    border: 1px solid var(--accent); padding: 1px 5px; font-size: 10px;
  }

  /* markdown styling in chat */
  .md h1 { font-size: 19px; margin: 2px 0 14px; color: var(--accent); border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, var(--rule)); padding-bottom: 6px; letter-spacing: -0.01em; font-weight: 700; }
  .md h2 { font-size: 15px; margin: 18px 0 10px; color: var(--accent); font-weight: 700; }
  .md p  { margin: 0 0 10px; color: var(--ink); line-height: 1.65; font-size: 12.5px; }
  .md code.pill { background: transparent; color: var(--ink); padding: 0 4px; font-size: 11.5px; border: 1px solid color-mix(in oklab, var(--accent) 45%, var(--rule)); }
  .md code.pill.orange { color: #e8a94a; border-color: color-mix(in oklab, #e8a94a 45%, var(--rule)); }
  .md code.pill.red { color: #d65a5a; border-color: color-mix(in oklab, #d65a5a 45%, var(--rule)); }
  .md code.pill.cyan { color: #6ec6d0; border-color: color-mix(in oklab, #6ec6d0 45%, var(--rule)); }
  .md table { border-collapse: collapse; width: 100%; font-size: 12px; margin: 10px 0 14px; }
  .md th, .md td { text-align: left; padding: 8px 10px; vertical-align: top; }
  .md th { color: var(--ink-dim); font-weight: 500; font-size: 11px; border-bottom: 1px solid var(--rule); }
  .md td { color: var(--ink); border-bottom: 1px dashed var(--rule); }
  .md td .sub { color: var(--ink-faint); font-size: 11px; display: block; margin-top: 2px; }
  .md .tools-used { color: var(--ink-dim); border: 1px solid var(--rule); padding: 5px 10px; font-size: 11px; margin: 10px 0 4px; display: inline-block; }
  .md .tools-used::before { content: "▸ "; color: var(--accent); }
  .md .ts { color: var(--ink-faint); font-size: 11px; margin-top: 14px; }
  .md .ok { color: var(--accent); }

  /* preview/git tabs on right */
  .right-tabs { display: flex; gap: 22px; padding: 10px 14px 0; border-bottom: 1px solid var(--rule); font-size: 12px; color: var(--ink-faint); }
  .right-tabs .t { padding: 4px 0 10px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; background: none; border-top: 0; border-left: 0; border-right: 0; color: inherit; font: inherit; }
  .right-tabs .t.on { color: var(--ink); border-bottom-color: var(--accent); }
  .right-tabs .t:hover { color: var(--ink); }

  .right-panel { display: flex; flex-direction: column; min-height: 0; flex: 1; }
  .right-panel[hidden] { display: none; }

  .right-search { margin: 10px 14px 8px; padding: 5px 9px; border: 1px solid var(--rule); font-size: 11.5px; color: var(--ink-faint); display: flex; align-items: center; gap: 6px; }
  .tree { padding: 4px 14px; font-size: 12px; color: var(--ink); display: grid; gap: 3px; }
  .tree .d { cursor: pointer; }
  .tree .d::before { content: "▸ "; color: var(--accent); }

  /* ─── git subtabs ─── */
  .git-subtabs { display: flex; gap: 18px; padding: 8px 14px 0; font-size: 11px; color: var(--ink-faint); border-bottom: 1px solid var(--rule); }
  .git-subtabs .s { padding: 2px 0 8px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; background: none; border-top: 0; border-left: 0; border-right: 0; color: inherit; font: inherit; letter-spacing: 0.04em; }
  .git-subtabs .s.on { color: var(--ink); border-bottom-color: var(--accent); }
  .git-subtabs .s:hover { color: var(--ink); }

  .git-sub { padding: 8px 0; overflow-y: auto; }
  .git-sub[hidden] { display: none; }

  /* ─── git graph — two-column flex, mirrors real GitGraph.tsx ─── */
  .git-pane { display: flex; font-family: var(--mono); }
  .git-pane .graph-col { flex-shrink: 0; width: 80px; }
  .git-pane .graph-col svg { display: block; }
  .git-pane ul.commits { flex: 1; min-width: 0; margin: 0; padding: 0; list-style: none; }
  .git-pane ul.commits li {
    height: 24px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 12px 0 2px;
    font-size: 11px;
    cursor: pointer;
    color: var(--ink);
    border: 0;
    background: none;
  }
  .git-pane ul.commits li:hover { background: color-mix(in oklab, var(--ink) 8%, transparent); }
  .git-pane ul.commits li.sel { background: color-mix(in oklab, var(--accent) 14%, transparent); }
  .git-pane ul.commits .msg { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .git-pane ul.commits .sha { font-size: 10px; color: var(--ink-faint); flex-shrink: 0; letter-spacing: 0.02em; }
  .git-pane ul.commits .ref {
    font-size: 9.5px; line-height: 14px;
    padding: 0 5px;
    border: 1px solid;
    flex-shrink: 0;
    font-family: var(--mono);
    letter-spacing: 0.02em;
  }
  .git-pane ul.commits .ref.branch  { color: var(--accent); border-color: color-mix(in oklab, var(--accent) 40%, var(--rule)); background: color-mix(in oklab, var(--accent) 15%, transparent); }
  .git-pane ul.commits .ref.head    { color: var(--ink);    border-color: var(--ink-dim); background: color-mix(in oklab, var(--ink) 12%, transparent); }
  .git-pane ul.commits .ref.feat    { color: #e8a94a; border-color: color-mix(in oklab, #e8a94a 40%, var(--rule)); background: color-mix(in oklab, #e8a94a 15%, transparent); }
  .git-pane ul.commits .ref.scripts { color: #b98bd6; border-color: color-mix(in oklab, #b98bd6 40%, var(--rule)); background: color-mix(in oklab, #b98bd6 15%, transparent); }
  .git-pane ul.commits .ref.remote  { color: #6ec6d0; border-color: color-mix(in oklab, #6ec6d0 40%, var(--rule)); background: color-mix(in oklab, #6ec6d0 15%, transparent); }

  /* ─── git status / branches / stash lists ─── */
  .git-list { list-style: none; margin: 0; padding: 0; font-family: var(--mono); font-size: 11.5px; }
  .git-list li {
    display: flex; align-items: center; gap: 10px;
    padding: 5px 14px;
    color: var(--ink);
    cursor: pointer;
  }
  .git-list li:hover { background: color-mix(in oklab, var(--ink) 6%, transparent); }
  .git-list .st {
    font-family: var(--mono); font-size: 10.5px; font-weight: 700;
    width: 20px; text-align: center;
    border: 1px solid var(--rule); padding: 0 4px;
  }
  .git-list .st.m { color: var(--warn); border-color: color-mix(in oklab, var(--warn) 40%, var(--rule)); }
  .git-list .st.a { color: var(--accent); border-color: color-mix(in oklab, var(--accent) 40%, var(--rule)); }
  .git-list .st.u { color: var(--ink-faint); }
  .git-list .st.d { color: var(--danger); border-color: color-mix(in oklab, var(--danger) 40%, var(--rule)); }
  .git-list .fname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .git-list .hint { color: var(--ink-faint); font-size: 10px; flex-shrink: 0; }
  .git-list .cur::before { content: "●"; color: var(--accent); margin-right: 4px; font-size: 8px; }
  .git-list li.is-remote .fname { color: #6ec6d0; }
  .git-list li.is-current { background: color-mix(in oklab, var(--accent) 10%, transparent); }
  .git-list-head {
    padding: 8px 14px 4px; font-size: 10px;
    color: var(--ink-faint); letter-spacing: 0.1em; text-transform: uppercase;
  }

  /* right inspector */
  .app-right {
    border-left: 1px solid var(--rule);
    background: color-mix(in oklab, var(--bg) 75%, var(--bg-2));
    font-size: 11.5px;
    display: flex; flex-direction: column;
    overflow: hidden;
  }
  .app-right h6 {
    margin: 0; color: var(--ink-faint);
    font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
    font-weight: 500;
  }
  .insp-block {
    border: 1px solid var(--rule); padding: 10px 12px;
    display: grid; gap: 6px;
  }
  .insp-block .kv {
    display: flex; justify-content: space-between;
    color: var(--ink-dim);
  }
  .insp-block .kv b { color: var(--ink); font-weight: 500; }
  .insp-block .kv b.ok { color: var(--accent); }
  .insp-mini {
    display: grid; gap: 4px;
    color: var(--ink-dim); font-size: 11px;
  }
  .insp-mini .m {
    display: flex; justify-content: space-between; gap: 8px;
    padding: 4px 0;
    border-bottom: 1px dashed var(--rule);
  }
  .insp-mini .m:last-child { border-bottom: none; }
  .insp-mini .m .t { color: var(--accent); font-size: 10.5px; }

  .app-status {
    border-top: 1px solid var(--rule);
    padding: 6px 14px;
    font-size: 10.5px; color: var(--ink-faint);
    display: flex; align-items: center; gap: 14px;
    letter-spacing: 0.04em;
    background: color-mix(in oklab, var(--bg) 70%, var(--bg-2));
  }
  .app-status .grp { display: flex; align-items: center; gap: 6px; }
  .app-status .dot { width: 6px; height: 6px; background: var(--accent); display: inline-block; border-radius: 50%; }
  .app-status .sep { color: var(--ink-faint); opacity: 0.5; }
  .app-status .right { margin-left: auto; }

  @media (max-width: 1100px) {
    .app-body { grid-template-columns: 200px 1fr; }
    .app-right { display: none; }
  }
  @media (max-width: 720px) {
    .app-body { grid-template-columns: 1fr; }
    .app-side { display: none; }
  }


  /* ─────────────── responsive ─────────────── */
  @media (max-width: 900px) {
    .hero-sub { grid-template-columns: 1fr; gap: 28px; }
    .hero-actions { justify-self: start; }
    .strip { grid-template-columns: 1fr 1fr; }
    .strip > div:nth-child(2) { border-right: none; }
    .feat, .feat.wide, .feat.tall, .feat.huge { grid-column: span 12; }
    .llm-grid { grid-template-columns: repeat(2, 1fr); }
    .llm { border-right: 1px solid var(--rule); }
    .llm:nth-child(2n) { border-right: none; }
    .modes { grid-template-columns: 1fr 1fr; }
    .mode:nth-child(2) { border-right: none; }
    .splits { grid-template-columns: 1fr; }
    .foot { grid-template-columns: 1fr 1fr; }
    .section-head { grid-template-columns: 28px 1fr; }
    .section-head .meta { display: none; }
    .top nav { display: none; }
  }