.aic-page { --aic-ding: #e2b86b; --aic-ai: #83b6d8; --aic-human: var(--accent-light); max-width: 820px; }
[data-theme="light"] .aic-page { --aic-ding: #925d0b; --aic-ai: #205f88; --aic-human: #176b5b; }
.aic-page > header, .aic-page > section, .aic-page > footer { padding-left: 0; padding-right: 0; background: transparent; box-shadow: none; text-align: left; }
.aic-kicker { margin: 0 0 1rem; color: var(--accent-light); font: 700 .68rem/1.3 Inter, sans-serif; letter-spacing: .13em; text-transform: uppercase; }
.aic-hero { padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(3rem, 7vw, 5rem); }
.aic-hero h1 { max-width: 800px; margin: 0 0 1.75rem; font-size: clamp(3.6rem, 9vw, 6.8rem); line-height: .88; letter-spacing: -.065em; }
.aic-deck { max-width: 700px; margin-bottom: 2rem; font: clamp(1.2rem, 3vw, 1.55rem)/1.48 Georgia, serif; }
.aic-equation { display: flex; flex-wrap: wrap; gap: .55rem 1rem; align-items: center; max-width: 700px; padding: 1rem 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); color: var(--text-muted); font: .75rem/1.5 ui-monospace, Consolas, monospace; text-transform: uppercase; }
.aic-equation b { color: var(--fg); }
.aic-builder-section, .aic-parts, .aic-runs { padding: clamp(3rem, 7vw, 5.5rem) 0; border-top: 1px solid var(--border-color); }
.aic-section-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(230px, .8fr); gap: 2rem 3rem; margin-bottom: 2.5rem; }
.aic-section-heading h2 { margin: 0; font-size: clamp(2.7rem, 6vw, 4.4rem); line-height: .96; }
.aic-section-heading > p { align-self: end; margin: 0; color: var(--text-muted); font-size: .9rem; }
.aic-window { border: 1px solid var(--border-color); background: var(--blockquote-bg); box-shadow: 7px 7px 0 color-mix(in srgb, var(--border-color) 75%, transparent); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.aic-titlebar { display: flex; gap: .6rem; align-items: center; min-height: 38px; padding: .45rem .65rem; border-bottom: 1px solid var(--border-color); background: var(--fg); color: var(--bg); font-size: .72rem; letter-spacing: .03em; }
.aic-app-icon { display: grid; width: 20px; height: 20px; place-items: center; background: var(--accent); color: var(--bg); font-weight: 800; }
.aic-window-status { margin-left: auto; font-size: .63rem; }
.aic-toolbar { display: flex; gap: .4rem; padding: .6rem; border-bottom: 1px solid var(--border-color); }
.aic-window button { min-height: 34px; padding: .38rem .65rem; border: 1px solid var(--border-color); border-radius: 2px; background: var(--bg); color: var(--fg); font: 700 .68rem/1.2 ui-monospace, Consolas, monospace; }
.aic-window button:hover { background: var(--fg); color: var(--bg); }
.aic-window button:disabled { opacity: .28; cursor: default; }
.aic-example-selector { position: relative; display: grid; min-height: 34px; grid-template-columns: auto 1fr; align-items: center; border: 1px solid var(--border-color); border-radius: 2px; background: var(--bg); color: var(--fg); font: 700 .68rem/1.2 ui-monospace, Consolas, monospace; }
.aic-example-selector > span { padding: .38rem .15rem .38rem .65rem; white-space: nowrap; }
.aic-example-selector > span::after { content: ":"; }
.aic-example-selector select { min-height: 32px; max-width: 15rem; padding: .38rem 1.8rem .38rem .35rem; border: 0; background: var(--bg); color: var(--accent-light); font: inherit; cursor: pointer; }
.aic-example-selector:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }
.aic-window .aic-run { border-color: var(--accent); color: var(--accent-light); }
.aic-workbench { display: grid; grid-template-columns: 195px minmax(210px, .85fr) minmax(270px, 1.15fr); min-height: 560px; }
.aic-palette, .aic-sequence-pane, .aic-code-pane { min-width: 0; padding: 1rem; }
.aic-palette, .aic-sequence-pane { border-right: 1px solid var(--border-color); }
.aic-palette h3, .aic-pane-heading h3 { margin: 0; color: var(--fg); font: 700 .7rem/1.3 ui-monospace, Consolas, monospace; letter-spacing: .06em; text-transform: uppercase; }
.aic-pane-guidance { margin: .55rem 0 0; color: var(--text-muted); font: .58rem/1.45 Inter, sans-serif; }
.aic-palette-group { margin-top: 1.2rem; }
.aic-palette-group-heading { display: flex; justify-content: space-between; gap: .5rem; margin-bottom: .45rem; color: var(--text-muted); }
.aic-palette-group-heading h4, .aic-palette-group-heading span { margin: 0; font-size: .57rem; letter-spacing: .04em; text-transform: uppercase; }
.aic-action-list { display: grid; gap: .35rem; }
.aic-action-wrap { position: relative; }
.aic-window .aic-action { display: grid; grid-template-columns: 1fr auto; gap: .15rem .4rem; width: 100%; text-align: left; }
.aic-action small { grid-column: 1 / -1; color: var(--accent-light); font-size: .52rem; letter-spacing: .08em; }
.aic-action .aic-action-cue { color: var(--aic-ding); }
.aic-action-wrap.is-suggested .aic-action { border-color: var(--aic-ding); }
.aic-action-help { position: absolute; z-index: 5; top: calc(100% + .35rem); left: 0; display: none; width: min(290px, calc(100vw - 4rem)); padding: .8rem; border: 1px solid var(--accent); background: var(--bg); box-shadow: 4px 4px 0 var(--border-color); color: var(--fg); }
.aic-action-wrap:hover .aic-action-help, .aic-action-wrap:focus-within .aic-action-help { display: block; }
.aic-action-help strong { display: block; margin-bottom: .15rem; color: var(--accent-light); font-size: .55rem; letter-spacing: .08em; }
.aic-action-help p { margin: 0 0 .65rem; color: var(--fg); font: .67rem/1.5 Inter, sans-serif; }
.aic-action-help span { display: block; color: var(--text-muted); font-size: .55rem; letter-spacing: .06em; }
.aic-actor { display: inline-block; margin-left: .45rem; color: var(--text-muted); font-size: .5rem; letter-spacing: .06em; vertical-align: middle; }
.aic-actor--ai { color: var(--aic-ai); } .aic-actor--fletcher { color: var(--aic-human); } .aic-actor--both { color: var(--aic-ding); }
.aic-pane-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding-bottom: .75rem; border-bottom: 1px solid var(--border-color); }
.aic-pane-heading span { color: var(--text-muted); font-size: .58rem; text-transform: uppercase; }
.aic-sequence { margin: 0; padding: 0; list-style: none; }
.aic-step { display: grid; grid-template-columns: 1.7rem minmax(0, 1fr) auto; gap: .5rem; padding: .7rem .3rem; border-bottom: 1px solid var(--border-color); transition: background-color .12s ease, box-shadow .12s ease; }
.aic-step.is-executing { background: color-mix(in srgb, var(--accent) 14%, transparent); box-shadow: inset 3px 0 0 var(--accent); }
.aic-step-number { color: var(--text-muted); font-size: .58rem; }
.aic-step-body strong { display: block; font-size: .68rem; line-height: 1.3; }
.aic-step-body p { margin: .2rem 0 0; color: var(--text-muted); font: .58rem/1.45 Inter, sans-serif; }
.aic-step-controls { display: flex; flex-direction: column; gap: .2rem; }
.aic-window .aic-step-controls button { width: 25px; min-height: 23px; padding: 0; }
.aic-empty { margin: 1rem 0; color: var(--text-muted); font-size: .68rem; }
.aic-code-pane pre { max-width: 100%; margin: 0; padding: 1rem 0; overflow: auto; color: var(--fg); font: .68rem/1.65 ui-monospace, Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.aic-code-line { display: block; min-height: 1.65em; padding: 0 .25rem; }
.aic-code-line.is-executing { background: color-mix(in srgb, var(--accent) 14%, transparent); box-shadow: inset 2px 0 0 var(--accent); color: var(--accent-light); }
.aic-console { display: grid; grid-template-columns: auto 1fr; gap: .8rem; min-height: 48px; padding: .65rem 1rem; border-top: 1px solid var(--border-color); background: var(--bg); font-size: .63rem; }
.aic-console span { color: var(--accent-light); font-weight: 700; } .aic-console p { margin: 0; color: var(--text-muted); }
.aic-noscript { padding: 1rem; }
.aic-ledger { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--border-color); }
.aic-ledger article { padding: 1.5rem; } .aic-ledger article + article { border-left: 1px solid var(--border-color); }
.aic-ledger-label { color: var(--accent-light); font: 700 .67rem/1.3 ui-monospace, Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }
.aic-ledger article p:last-child { margin: 0; font: .9rem/1.75 ui-monospace, Consolas, monospace; }
.aic-explainer { margin-top: 2rem; }
.aic-explainer article { display: grid; grid-template-columns: 2.5rem minmax(130px, .6fr) minmax(0, 1.4fr); gap: 1rem; padding: 1.25rem 0; border-top: 1px solid var(--border-color); }
.aic-explainer article > span { color: var(--text-muted); font: .65rem ui-monospace, Consolas, monospace; }
.aic-explainer h3 { margin: 0; font: 500 1.2rem/1.3 Georgia, serif; }
.aic-explainer p { margin: 0; color: var(--text-muted); font-size: .87rem; }
.aic-explainer .aic-hmmm { border-top: 3px double var(--aic-ding); }
.aic-hmmm h3, .aic-log-ding { color: var(--aic-ding); }
.aic-log-list { border-top: 1px solid var(--border-color); }
.aic-log-list details { border-bottom: 1px solid var(--border-color); }
.aic-log-list summary { display: grid; grid-template-columns: 4.5rem 1fr auto; gap: 1rem; align-items: center; padding: 1.25rem 0; cursor: pointer; list-style: none; }
.aic-log-list summary::-webkit-details-marker { display: none; }
.aic-log-list summary::after { grid-column: 3; grid-row: 1; margin-left: .5rem; color: var(--accent); content: "+"; }
.aic-log-list details[open] summary::after { content: "−"; }
.aic-log-list summary span, .aic-log-list summary small { color: var(--text-muted); font: .62rem/1.4 ui-monospace, Consolas, monospace; letter-spacing: .06em; }
.aic-log-list summary strong { font: 500 1.3rem/1.2 Georgia, serif; }
.aic-log-list summary small { padding-right: 1.5rem; }
.aic-log { margin: 0 0 1.5rem 5.5rem; padding: 1.2rem; border-left: 2px solid var(--accent); background: var(--blockquote-bg); }
.aic-log p { margin: 0 0 .75rem; color: var(--text-muted); font: .77rem/1.65 ui-monospace, Consolas, monospace; }
.aic-log p:last-child { margin-bottom: 0; } .aic-log b { color: var(--fg); }
.aic-ending { padding: clamp(4rem, 9vw, 7rem) 0 2rem !important; border-top: 1px solid var(--border-color); }
.aic-ending h2 { max-width: 720px; font-size: clamp(2.5rem, 6vw, 4.2rem); }
.aic-ending > p:not(.aic-kicker) { max-width: 610px; color: var(--text-muted); }

@media (max-width: 740px) {
  .aic-section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .aic-workbench { grid-template-columns: 1fr; }
  .aic-palette, .aic-sequence-pane { border-right: 0; border-bottom: 1px solid var(--border-color); }
  .aic-action-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .aic-code-pane pre { max-height: 440px; }
  .aic-ledger { grid-template-columns: 1fr; } .aic-ledger article + article { border-left: 0; border-top: 1px solid var(--border-color); }
}
@media (max-width: 500px) {
  .aic-hero h1 { font-size: clamp(3.15rem, 16vw, 4.5rem); }
  .aic-window { margin-right: 5px; box-shadow: 5px 5px 0 color-mix(in srgb, var(--border-color) 75%, transparent); }
  .aic-toolbar { flex-wrap: wrap; }
  .aic-action-list { grid-template-columns: 1fr; }
  .aic-action-help { position: static; grid-column: 1 / -1; width: 100%; margin-top: .1rem; box-shadow: none; }
  .aic-explainer article { grid-template-columns: 2rem 1fr; } .aic-explainer article p { grid-column: 2; }
  .aic-log-list summary { grid-template-columns: 3.5rem 1fr auto; gap: .55rem; } .aic-log-list summary small { display: none; }
  .aic-log { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) { .aic-page * { scroll-behavior: auto; } }