/* drlinclark.com */

:root {
  --white: #ffffff;
  --light: #f4f4f2;
  --black: #0e0e0e;
  --surface-1: #161616;
  --surface-2: #1f1f1f;
  --ink: #0e0e0e;
  --ink-2: #6b6b6b;
  --ink-3: #a9aaaa;
  --off-white: #ececec;
  --hair: #d6d6d3;
  --hair-dark: #333333;
  --accent: #ffc700;
  --accent-hover: #e6b300;
  --accent-ink: #0e0e0e;
  --alert: #ed3e41;

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --gutter: clamp(20px, 4vw, 48px);
  --max: 1200px;
  --band: clamp(80px, 10vw, 150px);

  color: var(--ink);
  background: var(--white);
  font-family: var(--sans);
  font-size: 19px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-synthesis: none;
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; }
h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; }
strong { font-weight: 600; }
svg { display: block; }

.wrap { width: min(100% - 2 * var(--gutter), var(--max)); margin-inline: auto; }

.skip {
  position: absolute; left: var(--gutter); top: -100px; z-index: 20;
  padding: 8px 12px; background: var(--accent); color: var(--accent-ink);
  font-size: 14px; text-decoration: none;
}
.skip:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* Buttons and links */
.btn {
  display: inline-block; white-space: nowrap;
  font-size: 15px; font-weight: 600; letter-spacing: 0.005em;
  color: var(--accent-ink); background: var(--accent);
  padding: 11px 20px; border-radius: 8px; text-decoration: none;
  transition: background 140ms ease;
}
.btn:hover { background: var(--accent-hover); }
.btn-small { padding: 7px 14px; font-size: 14px; }
.btn-light { background: var(--accent); color: var(--accent-ink); }
.btn-light:hover { background: var(--accent-hover); color: var(--accent-ink); }
.link {
  font-size: 15px; font-weight: 600; color: var(--ink);
  text-decoration: none; padding-bottom: 2px; border-bottom: 2px solid var(--accent);
}
.link:hover { border-bottom-color: var(--ink); }
.link-light { color: var(--accent); border-bottom-color: transparent; }
.link-light:hover { border-bottom-color: var(--accent); }
.cta-row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }

/* Navigation */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--white); border-bottom: 1px solid var(--hair);
}
.nav-row { display: flex; align-items: center; gap: 32px; height: 56px; }
.brand { font-weight: 600; font-size: 17px; letter-spacing: -0.01em; text-decoration: none; margin-right: auto; }
.nav nav { display: flex; gap: 28px; }
.nav nav a { font-size: 14px; color: var(--ink-2); text-decoration: none; }
.nav nav a:hover { color: var(--ink); }

/* Hero */
.hero { padding: clamp(56px, 8vw, 120px) 0 clamp(64px, 8vw, 120px); }
.kicker { font-size: 15px; color: var(--ink-2); margin-bottom: 18px; }
.hero h1 {
  font-size: clamp(38px, 5.6vw, 76px); line-height: 1.04; font-weight: 600;
  letter-spacing: -0.028em; max-width: none;
}
.hero-sub { font-size: clamp(19px, 1.7vw, 23px); line-height: 1.45; color: var(--ink-2); max-width: 44ch; margin-top: 26px; }
.hero .cta-row { margin-top: 32px; }
.hero-diagram { margin-top: clamp(56px, 8vw, 110px); }

/* Bands */
.band { padding: var(--band) 0; }
.band-light { background: var(--light); }
.band-dark { background: var(--black); color: var(--off-white); }
.band h2 {
  font-size: clamp(32px, 4.2vw, 56px); line-height: 1.06; font-weight: 600; letter-spacing: -0.024em;
  max-width: none;
}
.band-sub { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.45; color: var(--ink-2); max-width: 54ch; margin-top: 20px; }
.band-dark .band-sub { color: var(--ink-3); }
.band h3 { font-size: 22px; line-height: 1.25; font-weight: 600; letter-spacing: -0.012em; }

/* Expertise domains */
.domains {
  margin-top: clamp(48px, 6vw, 80px);
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px 72px;
}
.domains li { display: grid; grid-template-columns: 40px 1fr; column-gap: 20px; }
.domains svg { width: 40px; height: 40px; fill: none; stroke: var(--off-white); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; grid-row: 1 / span 2; }
.domains p { font-size: 17px; line-height: 1.5; color: var(--ink-3); margin-top: 8px; grid-column: 2; }

/* Features with diagrams */
.feature {
  display: grid; grid-template-columns: 5fr 6fr; gap: clamp(32px, 6vw, 96px);
  align-items: center; margin-top: clamp(56px, 7vw, 100px);
}
.feature-flip .feature-text { order: 2; }
.feature-text h3 { font-size: clamp(24px, 2.4vw, 32px); line-height: 1.15; }
.feature-text p { margin-top: 18px; color: var(--ink-2); font-size: 18px; }
.feature .diagram svg { width: 100%; height: auto; max-width: 640px; margin-inline: auto; overflow: visible; }

/* Diagram vocabulary */
.diagram { color: var(--ink); border-left: 3px solid var(--accent); padding-left: clamp(16px, 2vw, 28px); }
.diagram svg { width: 100%; height: auto; overflow: visible; }
.diagram figcaption { font-size: 14px; line-height: 1.5; color: var(--ink-2); max-width: 70ch; margin-top: 20px; }
.d-line { fill: none; stroke: currentColor; stroke-width: 1.5; }
.d-line-thin { fill: none; stroke: var(--hair); stroke-width: 1; }
.band-dark .d-line-thin { stroke: var(--hair-dark); }
.d-tick line { stroke: currentColor; stroke-width: 1.5; }
.d-measure { fill: none; stroke: var(--ink-3); stroke-width: 1; }
.d-node circle { fill: var(--white); stroke: currentColor; stroke-width: 1.5; }
.d-band { fill: var(--light); stroke: var(--hair); stroke-width: 1; }
.d-band-accent { fill: var(--accent); opacity: 0.18; }
.d-band-label { fill: var(--ink-2); }
.d-text { fill: currentColor; }
.d-mute { fill: var(--ink-2); }
.d-accent-line { stroke: var(--accent); stroke-width: 2; stroke-dasharray: 3 4; }
.d-accent-text { fill: var(--ink); font-weight: 600; }
.d-accent-dot { fill: var(--accent) !important; stroke: var(--ink) !important; }
.d-alert-dot { fill: var(--alert) !important; stroke: var(--alert) !important; }
.d-alert-text { fill: var(--alert); }
#ir text { fill: currentColor; }
#ir .d-mute, #ir .d-band-label { fill: var(--ink-2); }

/* One orchestrated moment: the hero diagram draws itself once */
@media (prefers-reduced-motion: no-preference) {
  #ir .d-draw { animation: reveal 900ms ease-out both; }
  #ir .d-draw:nth-of-type(2) { animation-delay: 250ms; }
  #ir .d-draw:nth-of-type(3) { animation-delay: 550ms; }
  @keyframes reveal { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; transform: none; } }
}

/* Split sections (why, books) */
.split { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split-body p { color: var(--ink-2); }
.split-body p + p { margin-top: 20px; }
.split-body strong { color: var(--ink); }
.band-dark .split-body p { color: var(--ink-3); }
.band-dark .split-body strong { color: var(--off-white); }
.split-body .lead { font-size: clamp(20px, 1.8vw, 25px); line-height: 1.4; color: var(--off-white); }
.split-body .cta-row { margin-top: 32px; }

/* Collections */
.collections {
  margin-top: clamp(40px, 5vw, 64px);
  display: grid; grid-template-columns: 1fr 1fr; gap: 0 72px;
  border-top: 1px solid var(--hair);
}
.collections li { padding: 26px 0 28px; border-bottom: 1px solid var(--hair); }
.collections p { margin-top: 6px; font-size: 16px; color: var(--ink-2); }

/* Paths */
.paths { margin-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--hair); }
.paths li {
  display: grid; grid-template-columns: 3fr 6fr auto; gap: 32px; align-items: center;
  padding: 36px 0; border-bottom: 1px solid var(--hair);
}
.paths h3 { font-size: clamp(28px, 3vw, 40px); letter-spacing: -0.02em; }
.paths p { color: var(--ink-2); font-size: 18px; }

/* Contact */
.contact .btn { margin-top: 32px; }

/* Footer */
.foot { border-top: 1px solid var(--hair); }
.foot-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding: 28px 0 40px; font-size: 14px; color: var(--ink-2); }
.foot nav { display: flex; gap: 24px; flex-wrap: wrap; }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: var(--ink); }

/* Responsive */
@media (max-width: 980px) {
  .nav-row { flex-wrap: wrap; height: auto; padding: 12px 0 0; gap: 16px; }
  .nav nav { order: 3; flex-basis: 100%; overflow-x: auto; gap: 22px; padding: 2px 0 12px; scrollbar-width: none; }
  .nav nav::-webkit-scrollbar { display: none; }
  .nav nav a { white-space: nowrap; }
  .domains { grid-template-columns: 1fr; gap: 40px; }
  .feature, .feature-flip { grid-template-columns: 1fr; }
  .feature-flip .feature-text { order: 0; }
  .feature .diagram { max-width: 560px; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .collections { grid-template-columns: 1fr; }
  .paths li { grid-template-columns: 1fr; gap: 14px; align-items: start; }
}
@media (max-width: 640px) {
  :root { font-size: 17px; }
  .hero h1 { max-width: none; }
  .domains li { grid-template-columns: 32px 1fr; column-gap: 16px; }
  .domains svg { width: 32px; height: 32px; }
  .foot-row { flex-direction: column; }
}

/* Book */
.book-grid { display: grid; grid-template-columns: 4fr 7fr; gap: clamp(40px, 7vw, 112px); align-items: start; }
.cover { position: sticky; top: 88px; width: 100%; max-width: 360px; }
.cover img {
  display: block; width: 100%; height: auto;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.75), 0 0 0 1px rgba(255,255,255,0.08);
}
.kicker-light { color: var(--ink-3); }
.book-body h2 { max-width: none; }
.book-subtitle { font-size: clamp(20px, 2vw, 26px); line-height: 1.3; color: var(--ink-3); margin-top: 8px; }
.book-body .lead { font-size: clamp(20px, 1.9vw, 26px); line-height: 1.4; margin-top: 32px; color: var(--off-white); }
.book-body p + p { margin-top: 18px; }
.book-body > p:not(.lead):not(.kicker):not(.book-subtitle) { color: var(--ink-3); font-size: 18px; }
.controls {
  margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px;
  border-top: 1px solid var(--hair-dark);
}
.controls li { padding: 11px 0; border-bottom: 1px solid var(--hair-dark); font-size: 16px; color: var(--off-white); }
.book-for { margin-top: 28px; }
.book-body .cta-row { margin-top: 32px; }
@media (max-width: 980px) {
  .book-grid { grid-template-columns: 1fr; gap: 48px; }
  .cover { position: static; max-width: 300px; }
}
@media (max-width: 640px) {
  .controls { grid-template-columns: 1fr; }
}

/* Disclosure */
.more { margin-top: 28px; border-top: 1px solid var(--hair-dark); border-bottom: 1px solid var(--hair-dark); }
.more summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; font-size: 17px; font-weight: 600; color: var(--off-white);
}
.more summary::-webkit-details-marker { display: none; }
.more summary .pm { position: relative; width: 14px; height: 14px; flex: none; }
.more summary .pm::before, .more summary .pm::after {
  content: ""; position: absolute; background: var(--accent); transition: transform 160ms ease;
}
.more summary .pm::before { left: 0; top: 6px; width: 14px; height: 2px; }
.more summary .pm::after { left: 6px; top: 0; width: 2px; height: 14px; }
.more[open] summary .pm::after { transform: scaleY(0); }
.more-body { padding: 4px 0 28px; }
.more-body > p:first-child { margin-top: 0; }

/* Quiet abstract fields: ink on the dark bands, pearl on the light ones */
.band { position: relative; }
.band > .wrap { position: relative; z-index: 1; }
.field-flow::before, .field-plexus::before, .field-contour::before, .field-halftone::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-repeat: no-repeat; background-size: cover; background-position: center;
}
.field-flow::before { background-image: url("/assets/fields/field-contour-light.webp?v=202610281921"); opacity: 0.10; transform: scaleX(-1); }
.field-plexus::before { background-image: url("/assets/fields/field-halftone-light.webp?v=202610281921"); opacity: 0.09; background-position: right top; transform: scaleX(-1); -webkit-mask-image: linear-gradient(to bottom, #000 30%, transparent 85%); mask-image: linear-gradient(to bottom, #000 30%, transparent 85%); }
.field-contour { background-image: linear-gradient(135deg, #f7f7f5 0%, #f2f2f0 55%, #eeeeeb 100%); }
.field-contour::before { background-image: url("/assets/fields/field-contour.webp?v=202610281920"); opacity: 0.07; }
.field-halftone { background-image: linear-gradient(315deg, #f6f6f4 0%, #f2f2f0 50%, #ededea 100%); }
.field-halftone::before { background-image: url("/assets/fields/field-halftone.webp?v=202610281920"); opacity: 0.07; background-position: right top; -webkit-mask-image: linear-gradient(to bottom, #000 30%, transparent 85%); mask-image: linear-gradient(to bottom, #000 30%, transparent 85%); }
@media (max-width: 980px) {
  .field-contour::before { background-image: url("/assets/fields/field-contour-1200.webp?v=202610281920"); }
  .field-halftone::before { background-image: url("/assets/fields/field-halftone-1200.webp?v=202610281920"); }
  .field-flow::before { background-image: url("/assets/fields/field-contour-light-1200.webp?v=202610281921"); }
  .field-plexus::before { background-image: url("/assets/fields/field-halftone-light-1200.webp?v=202610281921"); }
}

/* Briefing */
.briefing-for li { padding: 14px 0; border-top: 1px solid var(--hair-dark); color: var(--ink-3); font-size: 17px; line-height: 1.5; }
.briefing-for li:last-child { border-bottom: 1px solid var(--hair-dark); }
.briefing-for strong { color: var(--off-white); }
.contact .cta-row { margin-top: 32px; }
.contact-note { margin-top: 20px; font-size: 14px; color: var(--ink-3); }

/* Conversion pass */
.paths-inline { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: baseline; margin-top: clamp(40px, 5vw, 64px); padding-top: 24px; border-top: 1px solid var(--hair-dark); font-size: 16px; color: var(--ink-3); }
.feature-cta { margin-top: 20px; }
.feature-cta .link { font-size: 15px; }
.book-link { margin-top: 20px; }
.book-excerpts-head { margin-top: 28px; font-weight: 600; color: var(--off-white); }
.book-excerpts { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.book-excerpts a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.book-excerpts a:hover { color: var(--accent-hover); }
.library-note { margin-top: 28px; font-size: 16px; color: var(--ink-2); }
.domains h3 a { text-decoration: none; }
.domains h3 a:hover { border-bottom: 2px solid var(--accent); }
.collections li { scroll-margin-top: 110px; }
.split-body .cta-row { margin-top: 32px; }

/* Diagrams: larger, tighter to their text, legible labels */
.feature { grid-template-columns: 4fr 7fr; gap: clamp(24px, 4vw, 56px); }
.feature .diagram svg { max-width: none; }
.feature .diagram { padding-left: clamp(12px, 1.5vw, 20px); }
.diagram .d-mute { fill: var(--ink-2); }
.d-text, .d-accent-text { fill: var(--ink); }
.d-tick line { stroke: var(--ink); }
.d-line { stroke: var(--ink); }
.band-light .d-node circle { fill: var(--light); }
.d-line-thin { stroke: var(--ink-3); }

/* Refinement pass: type scale, proportion, rhythm */
:root { font-size: 20px; }
.kicker, .kicker-light { font-size: 17px; }
.nav nav a { font-size: 15px; }
.hero-sub { font-size: clamp(20px, 1.8vw, 24px); max-width: 48ch; }
.band h2 { font-size: clamp(36px, 4.6vw, 64px); }
.band-sub { font-size: clamp(20px, 1.7vw, 24px); max-width: 56ch; }
.band h3 { font-size: 24px; }
.domains { gap: 52px 80px; }
.domains p { font-size: 18px; line-height: 1.55; }
.domains li { grid-template-columns: 44px 1fr; column-gap: 24px; }
.domains svg { width: 44px; height: 44px; }
.paths-inline { font-size: 17px; }
.paths-inline .link { font-size: 17px; }
.feature-text p, .feature-intro p { font-size: 19px; }
.diagram figcaption { font-size: 16px; max-width: 80ch; }
.split-body p { font-size: 19px; }
.collections { gap: 0 80px; }
.collections li { padding: 30px 0 32px; }
.collections h3 { font-size: 26px; }
.collections p { font-size: 18px; margin-top: 8px; }
.library-note { font-size: 18px; }
.paths p { font-size: 19px; }
.briefing-for li { font-size: 18px; }
.contact-note { font-size: 16px; }
.book-body > p:not(.lead):not(.kicker):not(.book-subtitle) { font-size: 19px; }
.controls li { font-size: 17px; }
.foot-row { font-size: 15px; }

/* How the work is done: intro column, then a full-width architecture, then the ladder */
.feature-intro { max-width: 60ch; margin-top: clamp(40px, 5vw, 64px); }
.feature-intro h3 { font-size: clamp(26px, 2.6vw, 34px); line-height: 1.15; }
.feature-intro p { margin-top: 18px; color: var(--ink-2); }
.diagram-wide { margin-top: clamp(40px, 5vw, 64px); }
.diagram-wide svg { width: 100%; height: auto; }
.d-box rect { fill: var(--white); stroke: var(--ink); stroke-width: 1.5; }
.d-box text { fill: var(--ink); font-family: var(--mono); font-size: 17px; }
.d-box .d-strong { font-weight: 600; }
.d-box .d-mute { fill: var(--ink-2); font-size: 14px; }
.d-box-accent { fill: var(--accent) !important; }
.d-accent-line-solid path { fill: none; stroke: var(--accent); stroke-width: 3; }
.d-accent-label { fill: var(--ink); font-weight: 600; }
.feature-flip { margin-top: clamp(72px, 9vw, 120px); grid-template-columns: 5fr 6fr; }
.feature-flip .diagram svg { max-width: none; }

/* Why: problems as a two-column grid, run-in display heads */
.problems { margin-top: clamp(40px, 5vw, 64px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 4vw, 56px) clamp(40px, 5vw, 80px); }
.problem h3 { font-size: clamp(22px, 2vw, 27px); line-height: 1.2; letter-spacing: -0.014em; }
.problem p { margin-top: 12px; color: var(--ink-2); font-size: 18px; }
.problem-wide { grid-column: 1 / -1; padding-top: 32px; border-top: 1px solid var(--hair); display: grid; grid-template-columns: 1fr 1fr; gap: 12px clamp(40px, 5vw, 80px); align-items: start; }
.problem-wide h3 { grid-column: 1; }
.problem-wide p { grid-column: 1; margin-top: 0; }
.problem-wide .cta-row { grid-column: 2; grid-row: 1 / span 2; align-self: center; }

/* Book band: taller, so it reads as a destination rather than a stripe */
.book { padding: clamp(96px, 12vw, 180px) 0; }

/* Mobile */
@media (max-width: 980px) {
  .problems { grid-template-columns: 1fr; }
  .problem-wide { grid-template-columns: 1fr; }
  .problem-wide .cta-row { grid-column: 1; grid-row: auto; margin-top: 20px; }
  .feature-flip { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  :root { font-size: 18px; }
  .collections h3 { font-size: 23px; }
}

/* Composition pass */
.expertise-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(40px, 6vw, 96px); align-items: start; }
.expertise-lead { position: sticky; top: 96px; }
.expertise-lead h2 { max-width: 12ch; }
.paths-stack { flex-direction: column; align-items: flex-start; gap: 12px; border-top-color: var(--hair-dark); }
.domains-list { margin-top: 0; display: block; }
.domains-list li { padding: 28px 0; border-top: 1px solid var(--hair-dark); }
.domains-list li:last-child { border-bottom: 1px solid var(--hair-dark); }
.domains-list p { max-width: 54ch; }

.closing { padding-bottom: clamp(72px, 9vw, 120px); }
.paths-dark { border-top-color: var(--hair-dark); }
.paths-dark li { border-bottom-color: var(--hair-dark); grid-template-columns: 2fr 7fr 3fr; }
.paths-dark p { color: var(--ink-3); }
.paths-dark .link { justify-self: end; }
.briefing { margin-top: clamp(64px, 8vw, 112px); display: grid; grid-template-columns: 6fr 6fr; gap: clamp(40px, 6vw, 96px); align-items: start; scroll-margin-top: 80px; }
.briefing-title { font-size: clamp(30px, 3.4vw, 44px); line-height: 1.08; letter-spacing: -0.02em; }
.briefing-lead > p { margin-top: 18px; font-size: 19px; color: var(--ink-3); }
.briefing-lead .cta-row { margin-top: 28px; }
.briefing .briefing-for { padding-top: 10px; }

@media (max-width: 980px) {
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-lead { position: static; }
  .expertise-lead h2 { max-width: none; }
  .paths-dark li { grid-template-columns: 1fr; }
  .paths-dark .link { justify-self: start; }
  .briefing { grid-template-columns: 1fr; }
}

/* Paths: the row is the control */
.paths-dark li { display: block; padding: 0; }
.path-row {
  display: grid; grid-template-columns: 2fr 7fr 3fr; gap: 32px; align-items: center;
  padding: 36px 0; text-decoration: none; color: inherit; position: relative;
  border-top: 2px solid transparent; margin-top: -1px;
  transition: border-color 160ms ease;
}
.path-row:hover, .path-row:focus-visible { border-top-color: var(--accent); outline: none; }
.path-row h3 { transition: transform 200ms ease; }
.path-row:hover h3 { transform: translateX(6px); }
.path-go { justify-self: end; display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; color: var(--accent); white-space: nowrap; }
.path-arrow { display: inline-block; width: 0; height: 2px; background: var(--accent); position: relative; transition: width 200ms ease; }
.path-arrow::after { content: ""; position: absolute; right: -1px; top: -4px; width: 8px; height: 8px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); transform: rotate(45deg); opacity: 0; transition: opacity 120ms ease 80ms; }
.path-row:hover .path-arrow, .path-row:focus-visible .path-arrow { width: 28px; }
.path-row:hover .path-arrow::after, .path-row:focus-visible .path-arrow::after { opacity: 1; }
@media (max-width: 980px) {
  .path-row { grid-template-columns: 1fr; gap: 14px; }
  .path-go { justify-self: start; }
  .path-row .path-arrow { width: 28px; } .path-row .path-arrow::after { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) { .path-row, .path-row h3, .path-arrow, .path-arrow::after { transition: none; } .path-row:hover h3 { transform: none; } }

/* Arrow links in the help section */
.link-arrow { display: inline-flex; align-items: center; gap: 10px; margin-top: 16px; border-bottom: none; }
.link-arrow .path-arrow { width: 22px; }
.link-arrow .path-arrow::after { opacity: 1; }
.link-arrow:hover .path-arrow { width: 34px; }
.problem p a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* Playbook pass */
.hero-next { margin-top: 18px; font-size: 16px; color: var(--ink-2); max-width: 52ch; }
.ground { position: relative; z-index: 1; margin-top: clamp(56px, 7vw, 96px); padding-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--hair-dark); }
.ground h3 { font-size: clamp(24px, 2.4vw, 32px); }
.ground > p { margin-top: 12px; color: var(--ink-3); font-size: 18px; max-width: 60ch; }
.ground-list { margin-top: 28px; columns: 2; column-gap: 64px; }
.ground-list li { break-inside: avoid; padding: 10px 0 10px 18px; border-left: 2px solid var(--accent); margin-bottom: 10px; color: var(--off-white); font-size: 17px; line-height: 1.45; }
.closing .band-sub { margin-top: 16px; }
@media (max-width: 980px) { .ground-list { columns: 1; } }

/* Exit popover */
.leave { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: 24px; background: rgba(14,14,14,0.6); }
.leave[hidden] { display: none; }
.leave-card {
  position: relative; width: min(100%, 520px); background: var(--accent); color: var(--accent-ink);
  padding: clamp(28px, 4vw, 44px); border-radius: 12px;
  box-shadow: 0 40px 80px -24px rgba(0,0,0,0.6);
  animation: leave-in 220ms ease-out both;
}
@keyframes leave-in { from { opacity: 0; transform: translateY(12px) scale(0.98); } to { opacity: 1; transform: none; } }
.leave-kicker { font-size: 15px; font-weight: 600; opacity: 0.75; }
.leave-card h2 { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.06; letter-spacing: -0.024em; margin-top: 8px; max-width: none; }
.leave-card p + p, .leave-card h2 + p { margin-top: 16px; font-size: 18px; line-height: 1.5; }
.leave-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 28px; }
.leave-actions .btn { background: var(--ink); color: var(--off-white); }
.leave-actions .btn:hover { background: #2a2a2a; }
.leave-actions .link { background: none; border: 0; border-bottom: 2px solid var(--accent-ink); color: var(--accent-ink); font: inherit; font-size: 15px; font-weight: 600; cursor: pointer; padding: 0 0 2px; }
.leave-close { position: absolute; top: 14px; right: 16px; background: none; border: 0; font-size: 28px; line-height: 1; color: var(--accent-ink); cursor: pointer; padding: 4px 8px; }
.leave-close:hover { opacity: 0.7; }
body.leave-open { overflow: hidden; }
@media (prefers-reduced-motion: reduce) { .leave-card { animation: none; } }

/* Library hubs link to collections */
.collections h3 a { color: inherit; text-decoration: none; }
.collections h3 a:hover { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* Wide diagrams on small screens: whole-shape preview + full-size overlay */
.dia-open { display: none; margin-top: 14px; }
.dia-overlay { position: fixed; inset: 0; z-index: 60; background: var(--light); display: flex; flex-direction: column; }
.dia-overlay[hidden] { display: none; }
.dia-close { position: absolute; top: 10px; right: 12px; z-index: 2; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--ink); color: var(--off-white); font-size: 28px; line-height: 1; cursor: pointer; }
.dia-hint { padding: 16px 64px 8px 20px; font-size: 14px; color: var(--ink-2); }
.dia-stage { flex: 1; overflow: auto; -webkit-overflow-scrolling: touch; padding: 8px 20px 32px; }
.dia-stage svg { height: auto; width: 1100px; max-width: none; display: block; color: var(--ink); }
@media (max-width: 980px) {
  .dia-wide .dia-frame svg { width: 100%; height: auto; min-width: 0; }
  .dia-wide .dia-frame { pointer-events: none; }
  .dia-open { display: inline-block; }
}

/* Measure rule: titles run about 75% of their container; subtitles and marketing copy about two-thirds. Full width only on phones. */
.band h2, .feature-intro h3, .feature-text h3, .problem h3, .briefing-title, .book-body h2, .expertise-lead h2, .leave-card h2 { max-width: 78%; }
.hero h1 { max-width: none; } /* lines are hand-broken and each already sits at about three-quarters of the container */
/* Wrapping: titles balance their lines; subtitles and copy never leave a single word on the last line */
.hero h1, .band h2, .feature-intro h3, .feature-text h3, .problem h3, .briefing-title, .book-body h2, .expertise-lead h2, .leave-card h2, h1, h2 { text-wrap: pretty; }
.hero-sub, .band-sub, .section-lede, .feature-intro p, .feature-text p, .split-body p, .book-body > p, .book-for, .problem p, .briefing-lead > p, .ground > p, .library-note, .contact-note, .hero-next, .paths p, .domains p, .collections p, .domains-list p, p { text-wrap: pretty; }
.hero-sub, .band-sub, .section-lede, .feature-intro, .feature-intro p, .feature-text p,
.split-body, .split-body p, .book-body > p, .book-for, .book-link, .problem p, .briefing-lead > p,
.ground > p, .library-note, .contact-note, .hero-next, .paths p, .domains p, .collections p, .domains-list p {
  max-width: 72%;
}
.hero-sub { max-width: 70%; }
.hero-next { max-width: 72%; }
@media (max-width: 760px) {
  .hero h1, .band h2, .feature-intro h3, .feature-text h3, .problem h3, .briefing-title, .book-body h2, .expertise-lead h2, .leave-card h2,
  .hero-sub, .band-sub, .section-lede, .feature-intro, .feature-intro p, .feature-text p,
  .split-body, .split-body p, .book-body > p, .book-for, .book-link, .problem p, .briefing-lead > p,
  .ground > p, .library-note, .contact-note, .hero-next, .paths p, .domains p, .collections p, .domains-list p { max-width: none; }
}

/* ---- site search ---- */
.search-page { padding-block: 2.5rem 4rem; }
.search-box { display: flex; gap: .5rem; margin-block: 1rem 1.5rem; }
.search-box input[type="search"] {
  flex: 1; font-size: 1.05rem; padding: .75rem 1rem; border: 1px solid var(--hair);
  border-radius: .4rem; background: var(--white); color: inherit;
}
.search-meta { color: var(--ink-2); font-size: .9rem; margin-bottom: 1rem; }
.search-results { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 1.25rem; }
.search-results li { border-bottom: 1px solid var(--hair); padding-bottom: 1.1rem; }
.search-results .sr-type {
  display: inline-block; font-size: .72rem; text-transform: uppercase; letter-spacing: .04em;
  color: var(--ink-2); margin-bottom: .2rem;
}
.search-results a { font-size: 1.08rem; font-weight: 600; text-decoration: none; }
.search-results a:hover { text-decoration: underline; }
.search-results p { margin: .25rem 0 0; color: var(--ink-2); }
.search-empty { color: var(--ink-2); padding-block: 1rem; }