@font-face { font-family: "IBM Plex Sans"; src: url("/ibm-plex-sans-400-3b646991d3.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/ibm-plex-sans-500-0717336fb3.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/ibm-plex-sans-600-8960851d69.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }

:root {
  --ink: #111310;
  --ink-soft: #252824;
  --paper: #f7f7f4;
  --white: #ffffff;
  --mineral: #d8ddd8;
  --muted: #5d655f;
  --oxide: #a82f24;
  --forest: #285a43;
  --line: #c9cec9;
  --line-dark: rgba(255, 255, 255, 0.2);
  --font: "IBM Plex Sans", Arial, sans-serif;
  --max: 1320px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: clip; color: var(--ink); background: var(--paper); font-family: var(--font); line-height: 1.55; letter-spacing: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure, dl, dd { margin-top: 0; }
h1, h2, h3 { letter-spacing: 0; }

.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; color: var(--white); background: var(--oxide); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid var(--oxide); outline-offset: 4px; }

.masthead { min-height: 74px; padding: 14px max(24px, calc((100% - var(--max)) / 2)); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 28px; background: var(--paper); border-bottom: 1px solid var(--line); }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; }
.brand img, .footer-brand img { flex: 0 0 auto; }
.brand > span { display: flex; align-items: baseline; gap: 6px; }
.brand strong { font-size: 18px; font-weight: 600; }
.brand small { color: var(--muted); font-size: 10px; font-weight: 600; text-transform: uppercase; }
.masthead nav { display: flex; gap: 26px; font-size: 13px; font-weight: 500; }
.masthead nav a, .footer nav a { padding-block: 5px; border-bottom: 2px solid transparent; }
.masthead nav a:hover, .masthead nav a:focus-visible, .footer nav a:hover, .footer nav a:focus-visible { border-color: var(--oxide); }
.header-contact { justify-self: end; color: var(--forest); font-size: 13px; font-weight: 600; }

.hero { position: relative; min-height: 680px; height: calc(100svh - 74px); max-height: 900px; display: flex; align-items: end; isolation: isolate; overflow: hidden; color: var(--white); background: var(--ink); }
.hero-media, .hero-media img { position: absolute; z-index: -3; inset: 0; width: 100%; height: 100%; }
.hero-media img { object-fit: cover; object-position: center center; }
.hero-shade { position: absolute; z-index: -2; inset: 0; background: linear-gradient(90deg, rgba(9, 10, 9, 0.9) 0%, rgba(9, 10, 9, 0.68) 34%, rgba(9, 10, 9, 0.16) 70%, rgba(9, 10, 9, 0.22) 100%); }
.hero-content { width: 100%; max-width: var(--max); margin: 0 auto; padding: 74px 24px 78px; }
.overline, .section-label { font-size: 11px; font-weight: 600; text-transform: uppercase; }
.overline { margin-bottom: 22px; color: #d4d9d4; }
.hero h1 { max-width: 780px; margin-bottom: 20px; font-size: 92px; line-height: 0.98; font-weight: 500; }
.hero-lede { max-width: 690px; margin-bottom: 35px; font-size: 27px; line-height: 1.3; }
.hero-actions, .publishing-actions, .contact-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; }
.hero-caption { position: absolute; right: max(24px, calc((100% - var(--max)) / 2)); bottom: 26px; margin: 0; font-size: 11px; font-weight: 600; text-transform: uppercase; }

.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 12px 19px; font-size: 14px; font-weight: 600; border: 1px solid transparent; }
.button-light { color: var(--ink); background: var(--white); }
.button-dark { color: var(--white); background: var(--ink); }
.button:hover, .button:focus-visible { color: var(--white); background: var(--oxide); }
.text-link { display: inline-flex; align-items: center; gap: 8px; padding-bottom: 3px; font-size: 14px; font-weight: 600; border-bottom: 2px solid var(--oxide); }
.light-link { color: var(--white); }

.company-section, .practice-section, .publishing-section, .evidence-section, .principles-section, .contact-section { padding: 108px max(24px, calc((100% - var(--max)) / 2)); }
.section-label { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 15px; color: var(--muted); border-bottom: 1px solid var(--line); }
.section-label span:first-child { color: var(--oxide); }
.section-label-dark { color: #d5ddd6; border-color: var(--line-dark); }
.section-label-dark span:first-child { color: #ffb3aa; }

.company-grid { padding-top: 62px; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 90px; align-items: start; }
.company-grid h2, .practice-section > h2, .publishing-copy h2, .evidence-grid h2, .principles-grid h2, .contact-section h2 { margin-bottom: 0; font-size: 54px; line-height: 1.06; font-weight: 500; }
.company-copy { max-width: 540px; padding-top: 9px; border-top: 4px solid var(--ink); }
.company-copy p { margin: 24px 0 0; color: var(--muted); font-size: 18px; }

.practice-section { color: var(--white); background: var(--ink-soft); }
.practice-section > h2 { max-width: 760px; margin: 60px 0 72px; }
.practice-table { border-top: 1px solid var(--line-dark); }
.practice-table article { min-height: 150px; display: grid; grid-template-columns: 90px minmax(240px, 0.7fr) minmax(300px, 1fr); gap: 34px; align-items: center; border-bottom: 1px solid var(--line-dark); }
.practice-code { color: #ed6253; font-size: 12px; font-weight: 600; }
.practice-table h3 { margin: 0; font-size: 26px; font-weight: 500; }
.practice-table p { max-width: 610px; margin: 0; color: #c5cbc5; font-size: 16px; }

.publishing-section { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 90px; background: var(--white); }
.publishing-copy h2 { margin-top: 58px; }
.publishing-copy > p { max-width: 570px; margin: 27px 0 34px; color: var(--muted); font-size: 18px; }
.publishing-facts { margin: 58px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.publishing-facts div { padding: 20px 12px 0 0; }
.publishing-facts dt { font-size: 24px; font-weight: 500; }
.publishing-facts dd { color: var(--muted); font-size: 12px; }
.book-shelf { align-self: center; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; align-items: end; }
.book-shelf figure { margin: 0; }
.book-shelf img { width: 100%; aspect-ratio: 240 / 371; object-fit: cover; box-shadow: 0 18px 34px rgba(17, 19, 16, 0.16); }
.book-shelf figcaption { margin-top: 13px; color: var(--muted); font-size: 10px; font-weight: 600; text-transform: uppercase; }

.evidence-section { background: var(--mineral); }
.evidence-section .section-label { color: #485049; }
.evidence-grid { padding-top: 62px; display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 90px; }
.evidence-grid > div p { max-width: 520px; margin: 28px 0 0; color: #4f5751; font-size: 17px; }
.evidence-grid ul { margin: 0; padding: 0; list-style: none; border-top: 3px solid var(--ink); }
.evidence-grid li { border-bottom: 1px solid #aab2ab; }
.evidence-grid a { min-height: 96px; display: grid; grid-template-columns: minmax(140px, 0.72fr) 1fr 24px; gap: 22px; align-items: center; }
.evidence-grid a:hover, .evidence-grid a:focus-visible { color: var(--oxide); }
.evidence-grid span { font-size: 18px; font-weight: 600; }
.evidence-grid small { color: #4f5751; font-size: 13px; }
.evidence-grid b { font-weight: 500; }

.principles-section { color: var(--white); background: var(--forest); }
.principles-grid { padding-top: 62px; display: grid; grid-template-columns: 1.05fr 0.75fr; gap: 110px; }
.principles-grid > div { padding-top: 8px; }
.principles-grid p { color: #d5dfd8; font-size: 17px; }
.principles-grid .text-link { margin-top: 18px; }

.contact-section { min-height: 560px; display: flex; flex-direction: column; justify-content: center; background: var(--paper); }
.contact-section .overline { color: var(--oxide); }
.contact-section h2 { font-size: 76px; }
.contact-section > p:not(.overline) { max-width: 680px; margin: 28px 0 34px; color: var(--muted); font-size: 19px; }

.footer { min-height: 180px; padding: 42px max(24px, calc((100% - var(--max)) / 2)); display: grid; grid-template-columns: 0.75fr 1.1fr 1fr; gap: 26px 48px; align-items: start; color: #aeb4ae; background: var(--ink); font-size: 12px; }
.footer-brand { color: var(--white); }
.footer p { max-width: 390px; margin: 0; }
.footer nav { display: flex; justify-content: end; flex-wrap: wrap; gap: 18px; }
.footer > span { grid-column: 1 / -1; padding-top: 22px; border-top: 1px solid var(--line-dark); }

.legal-page, .error-page { min-height: calc(100svh - 254px); padding: 90px max(24px, calc((100% - 900px) / 2)); }
.legal-page h1, .error-page h1 { margin-bottom: 26px; font-size: 62px; line-height: 1.05; font-weight: 500; }
.legal-page h2 { margin: 46px 0 14px; font-size: 26px; }
.legal-page p, .legal-page li, .error-page p { color: var(--muted); font-size: 17px; }
.legal-page a { border-bottom: 2px solid var(--oxide); }
.error-page { display: flex; flex-direction: column; justify-content: center; }
.error-page .button { width: max-content; margin-top: 14px; }

@media (max-width: 1000px) {
  .masthead { grid-template-columns: auto 1fr; }
  .masthead nav { grid-row: 2; grid-column: 1 / -1; justify-content: space-between; padding-top: 8px; border-top: 1px solid var(--line); }
  .header-contact { grid-column: 2; grid-row: 1; }
  .hero { height: 760px; }
  .company-grid, .evidence-grid, .principles-grid { grid-template-columns: 1fr; gap: 46px; }
  .publishing-section { grid-template-columns: 1fr; gap: 68px; }
  .book-shelf { max-width: 720px; }
  .practice-table article { grid-template-columns: 70px 0.7fr 1fr; gap: 24px; }
}

@media (max-width: 720px) {
  .masthead { min-height: 0; padding: 12px 16px; gap: 12px 18px; }
  .brand strong { font-size: 16px; }
  .header-contact { font-size: 12px; }
  .masthead nav { overflow-x: auto; justify-content: start; gap: 22px; padding-bottom: 4px; white-space: nowrap; }
  .masthead nav a { flex: 0 0 auto; }
  .hero { min-height: 660px; height: calc(100svh - 112px); max-height: 780px; }
  .hero-media img { object-position: 64% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(9, 10, 9, 0.92) 0%, rgba(9, 10, 9, 0.76) 58%, rgba(9, 10, 9, 0.28) 100%); }
  .hero-content { padding: 70px 18px 90px; }
  .hero h1 { font-size: 58px; }
  .hero-lede { max-width: 480px; font-size: 22px; }
  .hero-caption { left: 18px; right: auto; bottom: 24px; }
  .company-section, .practice-section, .publishing-section, .evidence-section, .principles-section, .contact-section { padding: 76px 18px; }
  .section-label { font-size: 10px; }
  .company-grid, .evidence-grid, .principles-grid { padding-top: 42px; }
  .company-grid h2, .practice-section > h2, .publishing-copy h2, .evidence-grid h2, .principles-grid h2, .contact-section h2 { font-size: 39px; }
  .company-copy p, .publishing-copy > p { font-size: 17px; }
  .practice-section > h2 { margin: 42px 0 50px; }
  .practice-table article { padding: 28px 0; grid-template-columns: 52px 1fr; gap: 10px 18px; }
  .practice-table h3 { font-size: 22px; }
  .practice-table p { grid-column: 2; font-size: 15px; }
  .publishing-copy h2 { margin-top: 42px; }
  .publishing-facts { margin-top: 44px; }
  .publishing-facts dt { font-size: 20px; }
  .book-shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 16px; }
  .evidence-grid a { min-height: 105px; grid-template-columns: 1fr 22px; gap: 5px 16px; }
  .evidence-grid small { grid-column: 1; }
  .evidence-grid b { grid-column: 2; grid-row: 1 / 3; }
  .contact-section { min-height: 500px; }
  .footer { padding: 38px 18px; grid-template-columns: 1fr; gap: 22px; }
  .footer nav { justify-content: start; }
  .footer > span { grid-column: 1; }
  .legal-page, .error-page { padding: 72px 18px; }
  .legal-page h1, .error-page h1 { font-size: 44px; }
}

@media (max-width: 380px) {
  .header-contact { max-width: 110px; text-align: right; }
  .hero h1 { font-size: 50px; }
  .hero-actions, .publishing-actions, .contact-actions { align-items: flex-start; flex-direction: column; }
  .publishing-facts { grid-template-columns: 1fr; }
  .publishing-facts div { padding-bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media (prefers-contrast: more) { :root { --muted: #363b37; --line: #878f88; } }