@layer reset, base, layout, components, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  body, h1, h2, h3, h4, p, figure { margin: 0; }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
}

@layer base {
  :root {
    --paper: #ffffff;
    --ink: #161616;
    --muted: #626262;
    --line: #dedede;
    --accent: #111111;
    --soft: #f5f5f3;
  }
  html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
  body { background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; font-size: 1rem; line-height: 1.55; -webkit-font-smoothing: antialiased; }
  ::selection { background: var(--accent); color: white; }
  a { text-underline-offset: .25em; }
  a:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
  .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
  .skip-link { position: fixed; top: 1rem; left: 1rem; z-index: 10; background: var(--accent); color: white; padding: .8rem 1rem; transform: translateY(-200%); }
  .skip-link:focus { transform: translateY(0); }
}

@layer layout {
  .wrap { width: min(100% - 7rem, 1376px); margin-inline: auto; }
  .site-header { min-height: 116px; display: flex; justify-content: space-between; align-items: center; gap: 2rem; border-bottom: 1px solid var(--line); }
  .hero { position: relative; display: grid; grid-template-columns: 1.37fr 1fr; gap: 2.75rem; padding-top: 4.5rem; }
  .hero-copy { position: relative; min-width: 0; padding-top: 1.25rem; z-index: 1; }
  .hero-footer { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; padding: 1rem 0 2rem; margin-top: .8rem; gap: 2rem; color: var(--muted); font-size: .875rem; }
  .section { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 3fr; gap: 3rem; padding-block: 5.5rem; }
  .section-content { min-width: 0; }
  .about .section-content { display: grid; grid-template-columns: 1fr 1.2fr; column-gap: 3.5rem; }
  .work-link { grid-column: 1 / -1; }
  .footer-inner { display: grid; grid-template-columns: 1fr 3fr; column-gap: 3rem; padding-top: 4.75rem; }
  .colophon { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 2rem; margin-top: 4.25rem; border-top: 1px solid #ffffff40; padding-block: 1.8rem; }
}

@layer components {
  .wordmark { font-size: 1.6rem; font-weight: 700; letter-spacing: -.065em; }
  .wordmark span { color: var(--accent); }
  nav { display: flex; flex-wrap: wrap; gap: 2.5rem; font-size: .9375rem; }
  nav a { padding-block: .75rem; }
  nav a:hover { color: var(--accent); }
  .eyebrow { font-size: .875rem; letter-spacing: .15em; text-transform: uppercase; color: var(--accent); margin-bottom: 2rem; }
  h1 { font-family: Georgia, 'Times New Roman', serif; font-weight: 400; font-size: clamp(3rem, 6.4vw, 6.7rem); line-height: 1.04; letter-spacing: -.06em; overflow-wrap: anywhere; }
  .period { color: var(--accent); }
  .hero-intro { margin-top: 2.75rem; }
  .role { font-size: 1.375rem; letter-spacing: -.025em; }
  .intro { color: var(--muted); font-size: 1.125rem; margin-top: .9rem; line-height: 1.65; }
  .primary-link { display: inline-flex; align-items: center; gap: 2rem; margin-top: 2rem; background: var(--accent); color: white; padding: .95rem 1.25rem; font-size: .9375rem; transition: background .2s; }
  .primary-link:hover { background: #333333; }
  .primary-link span[aria-hidden] { font-size: 1.2rem; }
  .link-arrow { display: inline-block; vertical-align: -.125em; flex-shrink: 0; }
  .portrait { position: relative; align-self: stretch; aspect-ratio: 4 / 5; min-width: 0; background: #ebebe8; }
  .portrait img { width: 100%; height: 100%; object-fit: cover; object-position: 51% 50%; }
  .hero-footer a { display: inline-flex; gap: 1.5rem; align-items: center; color: var(--ink); }
  .hero-footer a:hover { color: var(--accent); }
  .section-label { display: flex; align-items: baseline; gap: 1rem; font-size: .875rem; }
  .index { font-family: 'Courier New', monospace; color: var(--accent); font-size: .8125rem; }
  .section-label h2 { font-size: .875rem; font-weight: 400; }
  .statement { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(2.25rem, 3.6vw, 3.4rem); font-weight: 400; line-height: 1.2; letter-spacing: -.045em; }
  .about-copy { color: var(--muted); font-size: 1.0625rem; }
  .about-copy p + p { margin-top: 1.25rem; }
  .work-link { display: flex; align-items: center; gap: 1.75rem; margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--line); }
  .company { font-size: 1.65rem; font-weight: 700; letter-spacing: -.065em; }
  .work-role { font-size: .875rem; color: var(--muted); }
  .work-link .arrow { margin-left: auto; font-size: 1.75rem; font-weight: 400; color: var(--accent); }
  .work-link:hover .company { color: var(--accent); }
  .section-heading h3 { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(2.25rem, 3.6vw, 3.4rem); font-weight: 400; line-height: 1.2; letter-spacing: -.045em; }
  .section-heading p { color: var(--muted); margin-top: 1rem; }
  .portfolio-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 2.75rem; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
  .portfolio-company { display: flex; min-height: 150px; align-items: center; justify-content: center; padding: 2.25rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .2s; }
  .portfolio-company:hover { background: var(--soft); }
  .portfolio-more { display: flex; justify-content: space-between; align-items: center; padding-block: .75rem; margin-top: .5rem; font-size: 1rem; color: #747474; }
  .portfolio-more:hover { background: var(--soft); color: var(--ink); }
  .portfolio-more > span[aria-hidden="true"] { font-size: 1.5rem; }
  .portfolio-feature { position: relative; flex-direction: column; gap: 1rem; }
  .portfolio-feature .feature-note { position: absolute; bottom: 1rem; font-size: .875rem; color: var(--muted); }
  .portfolio-page { padding-top: 2.5rem; padding-bottom: 5rem; }
  .back-link { display: inline-block; padding-block: .5rem; color: var(--muted); }
  .back-link:hover { color: var(--ink); }
  .portfolio-page-heading { padding: 3rem 0; max-width: 58rem; }
  .portfolio-page-heading .eyebrow { margin-bottom: 1.25rem; }
  .portfolio-page-heading h1 { font-size: clamp(3rem, 6vw, 6rem); }
  .portfolio-page-heading > p:last-child { font-size: 1.125rem; margin-top: 1.5rem; color: var(--muted); }
  .alphabet-nav { display: flex; flex-wrap: wrap; gap: .25rem; padding-block: 1rem; border-block: 1px solid var(--line); }
  .alphabet-nav a { display: grid; place-items: center; width: 2.4rem; min-height: 2.75rem; padding: .5rem; }
  .alphabet-nav a:hover { background: var(--ink); color: white; }
  .directory-section { display: grid; grid-template-columns: 1fr 6fr; gap: 2rem; padding-block: 2.5rem; border-bottom: 1px solid var(--line); }
  .directory-section h2 { font-family: Georgia, serif; font-size: 2rem; font-weight: 400; }
  .company-directory { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem 2rem; }
  .company-directory li { font-size: 1.0625rem; line-height: 1.5; overflow-wrap: anywhere; }
  .directory-note { display: block; font-size: .875rem; color: var(--muted); margin-top: .3rem; }
  .portfolio-company img { width: 100%; height: 48px; max-width: 165px; object-fit: contain; filter: brightness(0); }
  .portfolio-company.cognition { gap: .65rem; }
  .portfolio-company.cognition img { width: 32px; height: 32px; flex-shrink: 0; }
  .portfolio-company.cognition > span:not(.sr-only) { font-size: 1.4rem; letter-spacing: -.06em; }
  .book-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem 1.75rem; margin-top: 2.75rem; }
  .book-cover { height: 230px; display: flex; align-items: center; justify-content: center; background: var(--soft); padding: 1.5rem; }
  .book-cover img { width: auto; height: 100%; max-width: 100%; object-fit: contain; box-shadow: 3px 5px 10px #00000018; transition: transform .2s; }
  .book:hover .book-cover img { transform: translateY(-4px); }
  .book h4 { font-size: 1rem; font-weight: 400; line-height: 1.4; margin-top: 1rem; }
  .book p { font-size: .875rem; color: var(--muted); margin-top: .35rem; }
  .book-catalog { border-block: 1px solid var(--line); margin-top: 3rem; }
  .book-catalog summary { cursor: pointer; padding: 1.25rem 0; }
  .book-catalog summary span { color: var(--muted); font-size: .875rem; margin-left: 1rem; }
  .book-catalog summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
  .book-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 2.5rem; list-style: none; padding: 0; margin: 0 0 2rem; }
  .book-list li { border-top: 1px solid var(--line); padding-block: 1rem; }
  .book-list-title, .book-list-author { display: block; }
  .book-list-author { font-size: .875rem; margin-top: .2rem; color: var(--muted); }
  .book-list a:hover .book-list-title { text-decoration: underline; }
  .interview-list { margin-top: 2.75rem; }
  .interview { display: block; position: relative; border-top: 1px solid var(--line); padding: 1.8rem 2.5rem 1.8rem 0; transition: background .2s, padding .2s; }
  .interview:last-child { border-bottom: 1px solid var(--line); }
  .interview:hover { background: var(--soft); padding-left: 1rem; }
  .interview-meta { display: flex; gap: 1.5rem; color: var(--muted); font-size: .875rem; }
  .interview-meta span:last-child { margin-left: auto; font-family: 'Courier New', monospace; }
  .interview h4 { font-size: 1.35rem; font-weight: 400; line-height: 1.4; letter-spacing: -.025em; margin-top: .75rem; }
  .interview-action { display: flex; gap: 1rem; color: var(--accent); font-size: .875rem; margin-top: .9rem; }
  .interview-action span { position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 1.65rem; }
  .footer-band { background: var(--accent); color: white; }
  .footer-band .index { color: #bfbfbf; }
  .footer-title { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(2rem, 3.5vw, 3.25rem); font-weight: 400; line-height: 1.2; letter-spacing: -.04em; }
  .social-links { display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 2rem; }
  .social-links a { display: inline-flex; align-items: center; gap: 1.3rem; padding-block: .5rem; border-bottom: 1px solid #ffffff65; }
  .social-links a:hover { border-color: white; }
  .colophon { font-size: .8125rem; color: #dedede; }
  .colophon a { display: inline-flex; gap: 1.5rem; }
  .footer-band a:focus-visible { outline-color: white; }
}

@layer responsive {
  @media (min-width: 1600px) { .hero { gap: 4rem; } }
  @media (max-width: 1100px) {
    .wrap { width: calc(100% - 5rem); }
    .hero { grid-template-columns: 1.2fr 1fr; gap: 2rem; padding-top: 3rem; }
    .hero-copy { padding-top: .5rem; }
    .eyebrow { margin-bottom: 1.5rem; }
    .hero-intro { margin-top: 2rem; }
    .role { font-size: 1.125rem; }
    .intro { font-size: 1rem; }
    .primary-link { margin-top: 1.5rem; }
    .section, .footer-inner { grid-template-columns: 1fr 3.3fr; gap: 2rem; }
    .about .section-content { gap: 2rem; }
    nav { gap: 1.25rem; }
    .portfolio-company { padding: 1.5rem; }
    .company-directory { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .book-cover { height: 205px; padding: 1.25rem; }
  }
  @media (max-width: 760px) {
    .wrap { width: calc(100% - 3rem); }
    .site-header { min-height: 116px; padding-block: 1rem; flex-direction: column; align-items: flex-start; justify-content: center; gap: .25rem; }
    .wordmark { font-size: 1.35rem; }
    nav { font-size: .875rem; gap: 1.25rem; }
    nav a:last-child { display: none; }
    .hero { grid-template-columns: 1fr; gap: 2.5rem; padding-top: 2.25rem; }
    .hero-copy { padding-top: 0; }
    .eyebrow { font-size: .8125rem; margin-bottom: 1.4rem; }
    h1 { font-size: clamp(3.1rem, 11vw, 5.8rem); }
    .hero-intro { margin-top: 1.75rem; }
    .role { font-size: 1.1875rem; }
    .intro { font-size: 1.0625rem; }
    .portrait { aspect-ratio: 5 / 4; max-height: 500px; }
    .portrait img { object-position: center 33%; }
    .hero-footer { padding-top: 0; padding-bottom: 1.75rem; margin-top: -.5rem; font-size: .8125rem; gap: 1rem; }
    .hero-footer > span { max-width: 14rem; }
    .hero-footer a { gap: .75rem; }
    .section { grid-template-columns: 1fr; padding-block: 3.5rem; gap: 1.25rem; }
    .about .section-content { grid-template-columns: 1fr; gap: 1.75rem; }
    .statement { font-size: 2.6rem; }
    .about-copy { font-size: 1.0625rem; max-width: 36rem; }
    .work-link { margin-top: .25rem; flex-wrap: wrap; gap: .75rem 1.5rem; }
    .company { font-size: 1.5rem; }
    .section-heading h3 { font-size: 2.6rem; }
    .portfolio-grid, .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 2rem; }
    .portfolio-company { min-height: 128px; padding: 1.1rem; }
    .portfolio-company.cognition { gap: .4rem; }
    .portfolio-company.cognition > span:not(.sr-only) { font-size: 1.1rem; }
    .portfolio-company.cognition img { width: 24px; height: 24px; }
    .portfolio-company img { height: 40px; }
    .portfolio-feature .feature-note { font-size: .8125rem; bottom: .65rem; }
    .portfolio-page-heading { padding-block: 2rem; }
    .directory-section { grid-template-columns: 1fr; gap: 1.25rem; padding-block: 2rem; }
    .company-directory { gap: 1.25rem; }
    .alphabet-nav a:last-child { display: grid; }
    .book-grid { gap: 2rem 1.25rem; }
    .book-cover { height: 210px; padding: 1.25rem; }
    .book-list { grid-template-columns: 1fr; }
    .interview-list { margin-top: 2rem; }
    .interview { padding-block: 1.5rem; }
    .interview h4 { font-size: 1.25rem; }
    .footer-inner { grid-template-columns: 1fr; gap: 1.25rem; padding-top: 3rem; }
    .footer-title { font-size: 2.6rem; max-width: 26rem; }
    .social-links { gap: 1.5rem; }
    .colophon { margin-top: 1.5rem; padding-block: 1.5rem; gap: 1rem; flex-wrap: wrap; }
  }
  @media (max-width: 380px) {
    .wrap { width: calc(100% - 2rem); }
    nav { gap: .8rem; }
    .book-cover { height: 180px; padding: 1rem; }
    .hero-footer { align-items: flex-start; flex-direction: column; }
    .work-role { width: 100%; order: 1; }
    .desktop-break { display: none; }
    .social-links { flex-direction: column; align-items: flex-start; gap: .7rem; }
  }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; }
  }
}

/* Eight selected companies, balanced across desktop and mobile. */
.portfolio-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.portfolio-company { padding: 1.5rem; }
.portfolio-company.cognition { flex-direction: row; }
.portfolio-company img { width: var(--logo-width, 136px); max-width: 100%; height: 48px; object-fit: contain; }
.portfolio-company img[src$="/ramp.svg"] { --logo-width: 124px; }
.portfolio-company img[src$="/lovable.svg"] { --logo-width: 144px; }
.portfolio-company img[src$="/bending-spoons.svg"] { --logo-width: 165px; }
.portfolio-company img[src$="/deel.svg"] { --logo-width: 94px; }
.portfolio-company img[src$="/base-power.svg"] { --logo-width: 126px; }
.portfolio-company img[src$="/xai.svg"] { --logo-width: 36px; }
.portfolio-company.cognition img { width: 26px; height: 26px; }
.portfolio-company.cognition > span:not(.sr-only) { font-size: 1.25rem; }
.portfolio-more, .book-catalog summary, .interview-catalog summary { font-size: 1rem; }
@media (max-width: 1100px) { .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.interview-catalog { margin-top: 1.5rem; }
.interview-catalog summary { cursor: pointer; padding: 1.25rem 0; border-bottom: 1px solid var(--ink); font-size: 1rem; }
.interview-catalog summary > span { float: right; font-size: 1.25rem; }
.interview-catalog[open] summary > span { transform: rotate(45deg); }
.interview-catalog .interview-list { margin-top: 0; }
.directory-logo { display: block; width: 80px; height: 24px; object-fit: contain; object-position: left; margin-bottom: .5rem; }

.site-header nav { flex-wrap: wrap; }
.site-header nav a:last-child { display: inline-block; }
.tweet-picks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-top: 2.75rem; }
.tweet-card { border: 1px solid var(--line); padding: 1.5rem; display: flex; flex-direction: column; gap: 1.5rem; }
.tweet-card:hover { background: var(--soft); }
.tweet-byline { font-size: .8125rem; color: var(--muted); }
.tweet-card h4 { font-size: 1.25rem; font-weight: 400; line-height: 1.45; }
.tweet-card > span:nth-last-child(2) { font-size: .875rem; margin-top: auto; }
.x-feed { margin-top: 2rem; max-width: 100%; overflow: hidden; }
.x-feed > a { display: block; padding: 1rem 0; text-decoration: underline; }
@media (max-width: 640px) { .tweet-picks { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
  .site-header nav { width: 100%; flex-wrap: nowrap; justify-content: space-between; gap: clamp(.25rem, 1.2vw, .625rem); overflow-x: auto; }
  .site-header nav a { flex: 0 0 auto; white-space: nowrap; }
  .site-header nav a:focus-visible { outline-offset: -2px; }
}

.book-alphabet { margin-top: 1.75rem; }
.book-letter-group h4 { font-size: 1.5rem; font-weight: 400; padding: 1.5rem 0 .75rem; scroll-margin-top: 1rem; }
.book-letter-group .book-list { margin-top: 0; }
.book-alphabet a:last-child { display: grid; }

.media-row { display: grid; grid-template-columns: 128px minmax(0, 1fr); align-items: center; gap: 1.5rem; }
.media-thumb { display: block; width: 128px; height: 128px; object-fit: cover; border-radius: 4px; }
.press .media-thumb { height: 90px; }
.media-copy { min-width: 0; }
.media-copy .interview-meta { gap: .75rem; }
@media (max-width: 640px) {
  .media-row { grid-template-columns: 88px minmax(0, 1fr); gap: 1rem; padding-right: 1.5rem; }
  .media-thumb { width: 88px; height: 88px; }
  .press .media-thumb { height: 66px; }
  .media-copy .interview-meta { flex-wrap: wrap; font-size: .875rem; gap: .25rem .75rem; }
  .media-copy .interview-meta span:last-child { margin-left: 0; }
  .media-copy h4 { font-size: 1.0625rem; }
}

.company-directory li { display: flex; align-items: center; gap: .75rem; min-height: 48px; }
.company-directory .company-name { min-width: 0; }
.company-directory .directory-logo { flex: 0 0 56px; width: 56px; height: 40px; margin: 0; object-fit: contain; object-position: center; }
.directory-logo.monochrome { filter: brightness(0); }
@media (max-width: 640px) {
  .company-directory { column-gap: 1rem; }
  .company-directory .directory-logo { flex-basis: 36px; width: 36px; height: 32px; }
}

.company-logo { width: 114px; height: 48px; object-fit: contain; filter: brightness(0); flex-shrink: 0; }
.collection-page { max-width: 1060px; }

/* The hero ends with the portrait; no secondary footer row. */
.hero { padding-bottom: 3rem; }
@media (max-width: 640px) { .hero { padding-bottom: 2rem; } }

.press-year { margin-top: 3rem; }
.press-year h2 { font-family: Georgia, serif; font-size: 1.75rem; font-weight: 400; padding-bottom: .75rem; border-bottom: 1px solid var(--line); }
.press-year .interview-list { margin-top: 0; }
.media-text-only .media-copy { grid-column: 1 / -1; }