.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

/* AI uses the same global navigation rhythm as the home page. */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.nav .nav-inner { max-width: 1180px; margin: 0 auto; padding: 22px 32px 22px 32px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.nav .brand { display: inline-flex; align-items: center; gap: 12px; }
.nav .brand .nn11 { width: 88px; }
.nav .brand .if-mark { font-size: 42px; }
.nav .links { display: flex; gap: 2px; font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.02em; text-transform: uppercase; color: var(--ink-2); }
.nav .links a { padding: 6px 0; border-bottom: 1px solid transparent; transition: color 0.15s, border-color 0.15s; }
.nav .links a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.nav .links a.current { color: var(--accent); }

@media (min-width: 961px) {
  body.page-ai .nav .nav-inner {
    padding-left: 24px;
    padding-right: 24px;
    gap: 10px;
  }
  body.page-ai .nav .brand {
    gap: 10px;
    flex-shrink: 0;
  }
  body.page-ai .nav .brand .nn11 { width: 76px; }
  body.page-ai .nav .brand .if-mark { font-size: 38px; }
  body.page-ai .nav .links {
    min-width: 0;
    font-size: 10px;
    letter-spacing: 0.018em;
    white-space: nowrap;
  }
  body.page-ai .nav .links > a,
  body.page-ai .nav .has-dropdown > a {
    padding-left: 7px !important;
    padding-right: 7px !important;
  }
  body.page-ai .nav .nav-inner > .theme-toggle {
    margin-left: 8px;
  }
}

.ai-flow-card {
  width: 100%;
  max-width: 560px;
  justify-self: end;
  padding: 22px;
  border-radius: 18px;
  border: 1px solid var(--hero-border);
  background: color-mix(in srgb, var(--hero-panel-bg) 88%, transparent);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--hero-em) 12%, transparent),
    0 18px 46px -34px #000;
}
.ai-flow-card .frame {
  border: 1px solid color-mix(in srgb, var(--hero-em) 28%, transparent);
  border-radius: 16px;
  padding: 14px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--hero-em) 7%, transparent), transparent 72%),
    color-mix(in srgb, var(--hero-panel-bg) 72%, transparent);
}
.ai-flow-card svg { width: 100%; height: auto; display: block; overflow: visible; }
.ai-flow-card text { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; fill: var(--hero-fg-soft); }
.ai-flow-card .title-text { font-family: 'Newsreader', serif; font-size: 20px; font-style: italic; letter-spacing: 0; text-transform: none; fill: var(--hero-em); }
.ai-flow-card .core-title { font-family: 'Newsreader', serif; font-size: 30px; font-style: italic; letter-spacing: 0; text-transform: none; fill: var(--hero-em); }
.ai-flow-card .core-sub { font-size: 8.5px; letter-spacing: .24em; fill: var(--hero-fg-soft); }
.ai-flow-card .node {
  fill: color-mix(in srgb, var(--hero-panel-bg) 90%, transparent);
  stroke: var(--hero-em);
  stroke-width: 1.35;
}
.ai-flow-card .node-soft {
  fill: color-mix(in srgb, var(--hero-fg) 6%, transparent);
  stroke: color-mix(in srgb, var(--hero-em) 48%, transparent);
  stroke-width: 1.05;
}
.ai-flow-card .line { stroke: var(--hero-em); stroke-width: 1.5; fill: none; stroke-linecap: round; opacity: .86; }
.ai-flow-card .line-soft { stroke: color-mix(in srgb, var(--hero-fg) 34%, transparent); stroke-width: 1; fill: none; stroke-linecap: round; }
.ai-flow-card .trace-panel { fill: color-mix(in srgb, var(--hero-em) 3%, transparent); stroke: color-mix(in srgb, var(--hero-em) 26%, transparent); stroke-width: 1; }
.ai-flow-card .dot { fill: var(--hero-em); }
.ai-flow-card .ring { fill: none; stroke: color-mix(in srgb, var(--hero-em) 40%, transparent); stroke-width: 1; stroke-dasharray: 6 8; }

body.page-ai .subnav {
  position: sticky !important;
  top: 92px !important;
  z-index: 800 !important;
  margin: 12px auto 0 !important;
  max-width: 1212px !important;
  width: calc(100% - 32px) !important;
  border-radius: 16px !important;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--rule-2);
  box-shadow: 0 2px 10px oklch(15% 0.02 250 / 0.04);
  overflow: hidden;
}
body.page-ai .subnav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 32px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: nowrap !important;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
body.page-ai .subnav-inner::-webkit-scrollbar { display: none; }
body.page-ai .subnav .domain-tag {
  position: sticky;
  left: 0;
  z-index: 2;
  flex: 0 0 auto;
  white-space: nowrap;
  color: var(--accent);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  box-shadow: 16px 0 20px color-mix(in srgb, var(--bg) 88%, transparent);
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  margin-right: 4px;
  letter-spacing: 0.03em;
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 15px;
  text-transform: none;
}
body.page-ai .subnav a {
  flex: 0 0 auto;
  white-space: nowrap;
  color: var(--ink-2);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
}
body.page-ai .subnav a:hover,
body.page-ai .subnav a.current {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
body.page-ai .crumb {
  padding: 22px 0 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
body.page-ai .crumb a { color: var(--accent); }
body.page-ai .crumb .sep { color: var(--ink-3); margin: 0 6px; }

@media (max-width: 1040px) {
  body.page-ai .subnav {
    margin-left: 0;
    margin-right: 0;
  }
  body.page-ai .subnav-inner {
    max-width: none;
  }
}

.workspace-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 42px 0 54px; border-bottom: 1px solid var(--rule); }
.workspace-card {
  min-height: 242px;
  padding: 24px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--rule);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 7%, transparent);
  display: flex;
  flex-direction: column;
  color: inherit;
}
.workspace-card h3 { font-family: 'Source Serif 4', serif; font-size: clamp(22px, 2.2vw, 28px); line-height: 1.08; letter-spacing: -0.018em; margin: 12px 0 12px; color: var(--ink); }
.workspace-card h3 em { color: var(--accent); font-family: 'Newsreader', serif; font-style: italic; font-weight: 500; }
.workspace-card p { font-family: 'Source Serif 4', serif; font-size: 14.5px; line-height: 1.48; color: var(--ink-2); margin: 0 0 18px; }
.workspace-card .meta, .section-card .meta, .source-list .meta, .evidence-strip .meta { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.workspace-card .foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; padding-top: 14px; border-top: 1px solid var(--rule); font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.workspace-card .open { color: var(--accent); }

.section-card, .source-list, .evidence-strip {
  padding: 28px;
  border-radius: 18px;
  margin-top: 28px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--rule);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 7%, transparent);
}
.evidence-strip .map-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-top: 20px; }
.evidence-strip .map-step { min-height: 92px; border-radius: 14px; border: 1px solid var(--rule); background: color-mix(in srgb, var(--accent-bg) 28%, var(--surface)); padding: 14px; }
.evidence-strip .map-step b { display: block; font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.evidence-strip .map-step span { display: block; font-family: 'Source Serif 4', serif; font-size: 14px; line-height: 1.35; color: var(--ink-2); }

.section-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 24px; }
.section-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.section-card h4 { font-family: 'Source Serif 4', serif; font-size: 21px; line-height: 1.16; margin: 10px 0 10px; color: var(--ink); }
.section-card p { font-family: 'Source Serif 4', serif; color: var(--ink-2); font-size: 15px; line-height: 1.55; margin: 0; }

.source-list a { display: block; padding: 14px 0; border-bottom: 1px solid var(--rule); font-family: 'Source Serif 4', serif; color: var(--ink-2); }
.source-list a:last-child { border-bottom: 0; }
.source-list a:hover { color: var(--accent); }
.chapter-foot { display: flex; justify-content: space-between; gap: 16px; padding: 34px 0 70px; }
.chapter-foot a { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
footer { padding: 40px 0 80px; }
footer .credits { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--ink-3); letter-spacing: 0.12em; text-transform: uppercase; text-align: center; }
.sec-rail { display: none; }

@media (max-width: 1040px) {
  .workspace-grid, .section-grid, .section-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evidence-strip .map-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  body.page-ai:has(.nav.open) .subnav {
    opacity: 0;
    pointer-events: none;
  }
  body.page-ai .nav .links {
    position: fixed;
    top: 78px;
    right: 14px;
    bottom: auto;
    left: auto;
    width: min(86vw, 320px);
    max-height: calc(100vh - 92px);
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0 !important;
    padding: 12px 14px !important;
    background: var(--surface) !important;
    border: 1px solid var(--rule);
    border-radius: 14px;
    box-shadow:
      0 20px 56px oklch(15% 0.02 250 / 0.34),
      0 4px 14px oklch(15% 0.02 250 / 0.10),
      inset 0 0 0 1px color-mix(in srgb, var(--accent) 14%, transparent);
    transform: translateY(-8px) scale(0.98);
    transform-origin: top right;
    opacity: 0;
    visibility: hidden;
    transition: transform 0.18s ease, opacity 0.18s ease, visibility 0.18s ease;
    z-index: 60;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  body.page-ai .nav.open .links {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
  }
  body.page-ai .nav .links > a,
  body.page-ai .nav .has-dropdown > a {
    display: flex !important;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    padding: 11px 12px !important;
    font-size: 12px !important;
    border-bottom: 1px solid color-mix(in srgb, var(--rule) 60%, transparent) !important;
    border-radius: 8px;
  }
  body.page-ai .nav .has-dropdown { width: 100%; }
  body.page-ai .nav .dropdown {
    position: static !important;
    display: none !important;
    width: 100%;
    min-width: 0;
    margin: 0 0 8px 0;
    padding: 4px 0 6px 12px;
    border: 0;
    box-shadow: none;
    background: transparent !important;
    opacity: 1;
    transform: none;
    visibility: visible;
  }
  body.page-ai .nav .has-dropdown.is-open .dropdown { display: block !important; }
  body.page-ai .nav .dropdown a {
    padding: 8px 10px !important;
    font-size: 10.5px !important;
    border-bottom: 0 !important;
  }
}
@media (max-width: 760px) {
  body.page-ai .subnav {
    top: 64px !important;
    border: 0 !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    padding: 0 10px !important;
  }
  body.page-ai .subnav-inner {
    width: auto !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 8px 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    gap: 8px !important;
    overflow: visible !important;
    position: relative;
  }
  body.page-ai .subnav .domain-tag {
    position: static !important;
    max-width: 45vw !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    background: color-mix(in srgb, var(--surface) 78%, transparent) !important;
    backdrop-filter: blur(14px) saturate(150%) !important;
    -webkit-backdrop-filter: blur(14px) saturate(150%) !important;
    box-shadow: 0 10px 24px oklch(15% 0.02 250 / 0.12) !important;
    padding: 6px 12px !important;
    border: 1px solid color-mix(in srgb, var(--accent) 58%, transparent) !important;
    font-size: 14px !important;
    margin: 0 !important;
  }
  body.page-ai .subnav-toggle {
    min-height: 34px !important;
    padding: 7px 13px !important;
    background: color-mix(in srgb, var(--surface) 88%, transparent) !important;
    backdrop-filter: blur(14px) saturate(150%) !important;
    -webkit-backdrop-filter: blur(14px) saturate(150%) !important;
    box-shadow: 0 10px 24px oklch(15% 0.02 250 / 0.10) !important;
  }
  body.page-ai .subnav-menu {
    left: 10px !important;
    right: 10px !important;
    top: calc(100% + 6px) !important;
    z-index: 180 !important;
  }
}
@media (max-width: 880px) {
  .hero.hero-banner-canvas .ai-flow-card.hero-viz {
    --hero-fg: oklch(96% 0.018 210);
    --hero-fg-soft: oklch(78% 0.02 220);
    --hero-em: oklch(82% 0.14 195);
    --hero-panel-bg: oklch(16% 0.032 210);
    max-width: min(560px, 100%) !important;
    margin: 28px auto 0;
    padding: 16px;
    background: color-mix(in srgb, var(--hero-panel-bg) 90%, transparent);
  }
  .hero.hero-banner-canvas .ai-flow-card.hero-viz::before { display: none; }
}
@media (max-width: 680px) {
  .workspace-grid, .section-grid, .section-grid.two, .evidence-strip .map-grid { grid-template-columns: 1fr; }
  .workspace-grid { padding-top: 28px; }
  .hero.hero-banner-canvas .ai-flow-card.hero-viz { margin-left: 0; margin-right: 0; padding: 14px; }
  .ai-flow-card .frame { padding: 10px; }
  .ai-flow-card text { font-size: 11px; }
  .ai-flow-card .title-text { font-size: 18px; }
  .ai-flow-card .core-title { font-size: 28px; }
  .section-card, .source-list, .evidence-strip { padding: 22px; }
}

/* AI workspace mobile sticky nav contract · mirrors shared iFeed shell */
@media (max-width: 960px) {
  html,
  body {
    overflow-x: clip !important;
    overflow-y: visible !important;
  }

  body.page-ai .nav {
    position: sticky !important;
    top: 6px !important;
    z-index: 900 !important;
    transform: none !important;
  }

  body.page-ai .subnav {
    position: sticky !important;
    top: 66px !important;
    z-index: 840 !important;
    overflow: visible !important;
    transform: none !important;
  }

  body.page-ai .subnav-inner {
    overflow: visible !important;
  }

  body.page-ai:has(.nav.open) .subnav {
    opacity: 0 !important;
    pointer-events: none !important;
    visibility: hidden !important;
  }
}

@media (max-width: 640px) {
  body.page-ai .subnav {
    top: 64px !important;
  }
}