/* Second Order — commercial intelligence desk
   Newsreader (editorial serif) · Hanken Grotesk (UI)
   Rebuilt to the new website design guide v1.0 */

:root {
  --color-paper:        #f4efe3;
  --color-surface:      #fbf8f1;
  --color-tint:         #e9dfcf;
  --color-tint-strong:  #ddcdb7;
  --color-ink:          #211e17;
  --color-muted:        #6b6353;
  --color-accent:       #211e17;
  --color-accent-hover: #000000;
  --color-dark:         #171713;
  --color-dark-surface: #23221d;
  --color-light-ink:    #f7f1e6;
  --color-light-muted:  #b6ab94;
  --color-border:       rgba(33, 30, 23, 0.12);
  --color-border-strong:rgba(33, 30, 23, 0.2);
  --color-border-dark:  rgba(247, 241, 230, 0.16);
  --color-focus:        #211e17;

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-ui: "Hanken Grotesk", Arial, system-ui, sans-serif;

  --text-display-xl: clamp(2.5rem, 4.1vw, 3.5rem);
  --text-display: clamp(2.3rem, 3.6vw, 3rem);
  --text-h2: clamp(1.9rem, 2.9vw, 2.5rem);
  --text-h3: clamp(1.3rem, 1.8vw, 1.6rem);
  --text-lede: clamp(1.1rem, 1.5vw, 1.3rem);
  --text-body-lg: 1.1875rem;
  --text-body: 1.0625rem;
  --text-ui: 0.9375rem;
  --text-small: 0.8125rem;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;
  --space-9: 80px; --space-10: 96px; --space-11: 120px; --space-12: 144px;

  --container: 1240px;
  --gutter: clamp(22px, 5vw, 48px);
  --section: clamp(44px, 5.5vw, 76px);
  --section-feature: clamp(56px, 7vw, 96px);
  --section-compact: clamp(34px, 4.5vw, 56px);

  --radius-control: 12px;
  --radius-panel: 20px;
  --radius-large: 28px;
  --border-standard: 1px solid var(--color-border);
  --shadow-float: 0 14px 36px rgba(33, 30, 23, 0.09);
  --shadow-hover: 0 18px 44px rgba(33, 30, 23, 0.12);

  --motion-fast: 180ms;
  --motion-standard: 260ms;
  --motion-slow: 420ms;
  --ease-standard: cubic-bezier(.2, .8, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 100px; }

body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-ui);
  font-size: var(--text-body);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--color-ink); color: var(--color-paper); }
[hidden] { display: none !important; }
img, svg { max-width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.018em;
  color: var(--color-ink);
}

.h-display { font-size: var(--text-display); line-height: 1.04; letter-spacing: -0.022em; }
.h-display-xl { font-size: var(--text-display-xl); line-height: 1.02; letter-spacing: -0.024em; }
.h2 { font-size: var(--text-h2); line-height: 1.08; letter-spacing: -0.02em; }
.h3 { font-size: var(--text-h3); font-weight: 600; letter-spacing: -0.012em; }

.serif { font-family: var(--font-display); }
em { font-style: italic; }
strong, b { font-weight: 600; }
a { color: inherit; text-decoration: none; }

p { max-width: 68ch; }

.lede {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-lede);
  line-height: 1.45;
  color: var(--color-ink);
  max-width: 620px;
}
.muted { color: var(--color-muted); }
.note { font-size: var(--text-ui); line-height: 1.55; color: var(--color-muted); max-width: 60ch; }
.center { text-align: center; margin-inline: auto; }

/* ---------- skip link ---------- */
.skip-link {
  position: absolute; left: var(--space-4); top: var(--space-3); z-index: 500;
  background: var(--color-ink); color: var(--color-paper);
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  padding: 12px 18px; border-radius: 8px; transform: translateY(-160%);
  transition: transform var(--motion-fast) var(--ease-standard);
}
.skip-link:focus { transform: none; }

/* ---------- layout ---------- */
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.s { padding-block: var(--section); position: relative; }
.s--compact { padding-block: var(--section-compact); }
.s--feature { padding-block: var(--section-feature); }
.s--paper { background: var(--color-paper); }
.s--surface { background: var(--color-surface); }
.s--tint { background: var(--color-tint); }
.s--dark { background: var(--color-dark); color: var(--color-light-ink); }
.s--accent { background: var(--color-accent); color: var(--color-light-ink); }
.s--dark h1, .s--dark h2, .s--dark h3, .s--dark h4,
.s--accent h1, .s--accent h2, .s--accent h3, .s--accent h4 { color: var(--color-light-ink); }
.s--dark .lede, .s--accent .lede { color: var(--color-light-ink); }
.s--dark .muted { color: var(--color-light-muted); }
.s--accent .muted { color: rgba(247, 241, 230, 0.8); }

.section-head { max-width: 760px; margin-bottom: clamp(20px, 3vw, 36px); }
.section-head .h2 { max-width: 26ch; }
.section-head .lede { margin-top: var(--space-4); }
.section-head p.note { margin-top: var(--space-3); }

/* ---------- buttons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-4); align-items: center; margin-top: var(--space-5); }

.btn {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  min-height: 52px; padding: 0 24px;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  background: var(--color-ink); color: var(--color-light-ink);
  border: 1px solid var(--color-ink); border-radius: var(--radius-control);
  cursor: pointer;
  transition: background var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.btn .arw { transition: transform var(--motion-standard) var(--ease-standard); }
.btn:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
.btn:hover .arw { transform: translateX(4px); }
.s--dark .btn, .s--accent .btn { background: var(--color-light-ink); color: var(--color-ink); border-color: var(--color-light-ink); }
.s--dark .btn:hover, .s--accent .btn:hover { background: #fff; }

.btn--secondary {
  background: transparent; color: var(--color-ink);
  border: 1px solid var(--color-border-strong); min-height: 50px;
}
.btn--secondary:hover { background: var(--color-tint); border-color: var(--color-ink); color: var(--color-ink); }
.s--dark .btn--secondary, .s--accent .btn--secondary {
  background: transparent; color: var(--color-light-ink); border-color: var(--color-border-dark);
}
.s--dark .btn--secondary:hover, .s--accent .btn--secondary:hover { background: rgba(247,241,230,0.1); color: var(--color-light-ink); }

.arrow-link {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  color: var(--color-accent); display: inline-flex; align-items: center; gap: 0.4em;
  border-bottom: 1.5px solid transparent; padding-bottom: 2px;
  transition: border-color var(--motion-fast) var(--ease-standard);
}
.arrow-link .arw { transition: transform var(--motion-standard) var(--ease-standard); }
.arrow-link:hover { border-color: var(--color-accent); }
.arrow-link:hover .arw { transform: translateX(4px); }
.s--dark .arrow-link, .s--accent .arrow-link { color: var(--color-light-ink); }
.s--dark .arrow-link:hover, .s--accent .arrow-link:hover { border-color: var(--color-light-ink); }

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; border-radius: 3px; }
.s--dark :focus-visible, .s--accent :focus-visible { outline-color: var(--color-light-ink); }

/* ---------- header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 300;
  border-bottom: 1px solid transparent;
  transition: background 220ms var(--ease-standard), border-color 220ms var(--ease-standard),
              backdrop-filter 220ms var(--ease-standard);
}
.site-header.scrolled {
  background: rgba(244, 239, 227, 0.88);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border-bottom-color: var(--color-border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 80px; }
@media (max-width: 900px) { .site-header .container { height: 68px; } }

.wordmark {
  font-family: var(--font-display); font-weight: 600; font-size: 1.375rem;
  letter-spacing: -0.015em; color: var(--color-ink); white-space: nowrap;
}

.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 34px); }
.nav-link, .nav-trigger {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 500;
  color: var(--color-muted); background: none; border: 0; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding-block: 6px; position: relative;
  transition: color var(--motion-fast) var(--ease-standard);
}
.nav-link::after, .nav-trigger::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1.5px;
  background: var(--color-accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--motion-standard) var(--ease-standard);
}
.nav-link:hover, .nav-trigger:hover,
.nav-group.open .nav-trigger { color: var(--color-ink); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after,
.nav-group.open .nav-trigger::after, .nav-group.current .nav-trigger::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--color-ink); }

.nav-caret {
  width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px); transition: transform var(--motion-standard) var(--ease-standard);
}
.nav-group.open .nav-caret { transform: rotate(-135deg) translate(-1px, -1px); }

.nav-group { position: relative; }
.solutions-menu {
  position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(-8px);
  width: min(680px, 86vw); background: var(--color-surface);
  border: var(--border-standard); border-radius: var(--radius-panel);
  box-shadow: var(--shadow-hover); padding: var(--space-5);
  opacity: 0; visibility: hidden; transition: opacity var(--motion-standard), transform var(--motion-standard) var(--ease-standard), visibility var(--motion-standard);
}
.nav-group.open .solutions-menu { opacity: 1; visibility: visible; transform: translateX(-50%); }
.solutions-menu-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
.solutions-menu h4 {
  font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600;
  letter-spacing: 0.02em; color: var(--color-muted); margin-bottom: var(--space-2);
}
.solutions-menu ul { list-style: none; display: grid; gap: 2px; }
.solutions-menu a {
  display: block; padding: 10px 12px; border-radius: 10px;
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 500; color: var(--color-ink);
  transition: background var(--motion-fast) var(--ease-standard);
}
.solutions-menu a:hover { background: var(--color-tint); }
.solutions-menu-foot { margin-top: var(--space-5); padding-top: var(--space-4); border-top: var(--border-standard); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; margin-right: -10px; z-index: 320; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-ink); border-radius: 2px; transition: transform var(--motion-standard) var(--ease-standard), opacity var(--motion-fast); }
.nav-toggle span + span { margin-top: 6px; }

@media (max-width: 900px) {
  .nav {
    position: fixed; inset: 0; background: var(--color-paper);
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    gap: var(--space-2); padding: 96px var(--gutter) var(--space-8);
    transform: translateY(-100%); transition: transform var(--motion-slow) var(--ease-standard);
    overflow-y: auto; visibility: hidden;
  }
  .nav.open { transform: none; visibility: visible; }
  .nav-link, .nav-trigger {
    font-family: var(--font-display); font-size: 1.75rem; font-weight: 600; color: var(--color-ink);
    padding-block: 10px; width: 100%;
  }
  .nav-link::after, .nav-trigger::after { display: none; }
  .nav-group { width: 100%; }
  .solutions-menu,
  .nav-group.open .solutions-menu {
    position: static; transform: none; opacity: 1; visibility: visible; width: 100%;
    box-shadow: none; border: 0; background: none; padding: 0 0 var(--space-4);
    left: auto;
  }
  .solutions-menu { display: none; }
  .nav-group.open .solutions-menu { display: block; }
  .solutions-menu-cols { grid-template-columns: 1fr; gap: var(--space-4); }
  .solutions-menu a { font-family: var(--font-display); font-size: 1.0625rem; padding: 8px 0; }
  .nav .btn { margin-top: var(--space-4); }
  .nav-mail { font-family: var(--font-ui); font-size: var(--text-ui); color: var(--color-muted); margin-top: var(--space-3); }
  .nav-toggle { display: block; }
  .site-header.menu-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .site-header.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-header.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}
.nav-mail { display: none; }
@media (max-width: 900px) { .nav-mail { display: block; } }

/* ---------- hero ---------- */
.hero { padding-top: clamp(112px, 13vh, 148px); padding-bottom: clamp(36px, 4.5vw, 60px); position: relative; overflow: hidden; }

/* homepage hero fills one viewport so the next section does not bleed in */
.hero--full { min-height: 100vh; min-height: 100svh; display: flex; align-items: center;
  padding-top: clamp(92px, 11vh, 120px); padding-bottom: clamp(40px, 6vh, 72px); }
.hero--full .container { width: 100%; }
@media (max-width: 900px), (max-height: 760px) {
  .hero--full { min-height: 0; display: block; padding-top: clamp(104px, 14vh, 128px); }
}

/* sub-page heros: compact, no oversized dead space */
.hero--sub { padding-top: clamp(100px, 12vh, 124px); padding-bottom: clamp(24px, 3vw, 40px); }
.hero::before {
  content: ""; position: absolute; inset: -10% -10% auto -10%; height: 120%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(55% 50% at 15% 10%, rgba(33, 30, 23, 0.06), transparent 60%),
    radial-gradient(45% 45% at 95% 0%, rgba(33, 30, 23, 0.04), transparent 55%);
}
.hero .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 7fr 5fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.hero h1 { max-width: 16ch; }
.hero .lede { margin-top: var(--space-4); }
.hero--sub .hero-grid { grid-template-columns: 1fr; }
.hero--sub h1 { max-width: 20ch; font-size: var(--text-display); }
.hero--sub .lede { max-width: 640px; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-7); }
  .hero h1 { font-size: clamp(2.6rem, 9vw, 3rem); max-width: 18ch; }
}

/* ---------- representative placeholders ---------- */
.ph {
  position: relative; display: flex; flex-direction: column; justify-content: space-between;
  background: var(--color-surface); border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-panel); padding: var(--space-5);
  font-family: var(--font-ui); color: var(--color-muted); overflow: hidden;
}
.ph::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 100% 28px; opacity: 0.5;
}
.ph::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--color-accent); opacity: 0.9;
}
.ph > * { position: relative; }
.ph-num { display: none; }
.ph-label { font-size: var(--text-ui); font-weight: 600; color: var(--color-ink); margin-top: var(--space-2); }
.ph-meta { display: none; }
.ph--43 { aspect-ratio: 4 / 3; }
.ph--32 { aspect-ratio: 3 / 2; }
.ph--169 { aspect-ratio: 16 / 9; }
.s--dark .ph { background: var(--color-dark-surface); border-color: var(--color-border-dark); color: var(--color-light-muted); }
.s--dark .ph::before { background-image: linear-gradient(var(--color-border-dark) 1px, transparent 1px); }
.s--dark .ph-label { color: var(--color-light-ink); }
.s--dark .ph-num { color: var(--color-accent-hover); }

/* layered hero handoff */
.handoff-stack { position: relative; max-width: 440px; margin-left: auto; }
.handoff-stack .ph { box-shadow: var(--shadow-float); }
.handoff-stack .ph-back {
  position: absolute; inset: auto 0 0 0; z-index: 0; transform: translate(18px, -18px) scale(0.96);
  opacity: 0.55; aspect-ratio: 4 / 3;
}
.handoff-stack .ph-back:nth-of-type(2) { transform: translate(34px, -34px) scale(0.92); opacity: 0.3; }
.handoff-stack .ph-front { position: relative; z-index: 2; }
@media (max-width: 900px) { .handoff-stack .ph-back { display: none; } }

/* ---------- segmented control ---------- */
.segmented {
  display: inline-flex; gap: 4px; padding: 4px;
  background: var(--color-tint); border-radius: var(--radius-control);
  margin-bottom: clamp(18px, 2.5vw, 28px); max-width: 100%;
}
.segmented button {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  color: var(--color-muted); background: none; border: 0; cursor: pointer;
  padding: 12px 20px; border-radius: 9px; white-space: nowrap;
  transition: background var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.segmented button[aria-selected="true"] { background: var(--color-surface); color: var(--color-ink); box-shadow: var(--shadow-float); }
.s--dark .segmented { background: var(--color-dark-surface); }
.s--dark .segmented button { color: var(--color-light-muted); }
.s--dark .segmented button[aria-selected="true"] { background: var(--color-ink); color: var(--color-light-ink); }
@media (max-width: 560px) {
  .segmented { display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .segmented button { flex: 1 0 auto; padding-inline: 16px; }
}

/* ---------- route selector ---------- */
.route-selector { display: grid; grid-template-columns: 4fr 8fr; gap: clamp(20px, 3vw, 40px); align-items: start; }
.route-list { list-style: none; display: grid; gap: 6px; }
.route-item {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  display: grid; grid-template-columns: 44px 1fr 20px; align-items: center; gap: var(--space-3);
  padding: 14px; border-radius: var(--radius-control);
  font-family: var(--font-ui); color: var(--color-ink);
  transition: background var(--motion-fast) var(--ease-standard);
}
.route-item:hover { background: var(--color-tint); }
.route-item[aria-selected="true"] { background: var(--color-tint); }
.route-ico {
  width: 44px; height: 44px; border-radius: var(--radius-control);
  display: grid; place-items: center; background: var(--color-surface);
  border: var(--border-standard); color: var(--color-accent);
  transition: background var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.route-item[aria-selected="true"] .route-ico { background: var(--color-accent); color: var(--color-light-ink); border-color: var(--color-accent); }
.route-ico svg { width: 22px; height: 22px; }
.route-item .route-name { font-size: var(--text-ui); font-weight: 600; line-height: 1.3; }
.route-item .route-arw { justify-self: end; color: var(--color-muted); opacity: 0; transform: translateX(-4px); transition: opacity var(--motion-fast), transform var(--motion-fast) var(--ease-standard); }
.route-item[aria-selected="true"] .route-arw, .route-item:hover .route-arw { opacity: 1; transform: none; }

.route-panels { position: relative; }
.route-panel { display: none; }
.route-panel.on { display: block; animation: crossfade var(--motion-standard) var(--ease-standard); }
.route-panel .h3 { max-width: 22ch; }
.route-panel > p { margin-top: var(--space-3); max-width: 55ch; color: var(--color-muted); }
.route-panel .ph { margin-top: var(--space-4); max-width: 460px; aspect-ratio: 16 / 9; }
.route-panel .actions { margin-top: var(--space-5); }

.team-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-5); }
.team-col { background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-control); padding: var(--space-4); }
.team-col h4 { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); margin-bottom: var(--space-3); }
.team-col ul { list-style: none; display: grid; gap: var(--space-2); }
.team-col li { font-size: var(--text-ui); line-height: 1.45; padding-left: var(--space-3); position: relative; }
.team-col li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 5px; height: 5px; border-radius: 50%; background: var(--color-accent); }

@media (max-width: 900px) {
  .route-selector { grid-template-columns: 1fr; }
  .route-list { grid-template-columns: 1fr 1fr; gap: 8px; }
  .route-item { grid-template-columns: 36px 1fr; }
  .route-item .route-arw { display: none; }
  .route-ico { width: 36px; height: 36px; }
  .team-columns { grid-template-columns: 1fr; }
}
@media (max-width: 520px) { .route-list { grid-template-columns: 1fr; } }

/* ---------- scenario switcher ---------- */
.scenario-tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: clamp(18px, 2.5vw, 28px); }
.scenario-tabs button {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  color: var(--color-muted); background: var(--color-surface);
  border: var(--border-standard); border-radius: var(--radius-control);
  padding: 12px 18px; cursor: pointer; white-space: nowrap;
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast);
}
.scenario-tabs button[aria-selected="true"] { background: var(--color-ink); color: var(--color-light-ink); border-color: var(--color-ink); }
.scenario-body { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(24px, 4vw, 56px); align-items: start; }
.scenario-panel { display: none; }
.scenario-panel.on { display: grid; grid-template-columns: subgrid; grid-column: 1 / -1; animation: crossfade var(--motion-standard) var(--ease-standard); }
.scenario-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.scenario-cols h4 { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); margin-bottom: var(--space-3); }
.scenario-cols p { font-size: var(--text-ui); line-height: 1.5; color: var(--color-muted); }
.scenario-cols ul { list-style: none; display: grid; gap: 8px; margin-top: var(--space-2); }
.scenario-cols li { font-size: var(--text-ui); line-height: 1.4; }
@media (max-width: 820px) {
  .scenario-body { grid-template-columns: 1fr; }
  .scenario-panel.on { grid-template-columns: 1fr; }
  .scenario-cols { grid-template-columns: 1fr; }
}
@media (max-width: 560px) { .scenario-tabs { overflow-x: auto; flex-wrap: nowrap; } }
.scenario-tabs button[aria-selected="true"] { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

/* single-column tab body (question index) */
.qa-body { display: block; }
.qa-body .scenario-panel { display: none; }
.qa-body .scenario-panel.on { display: block; grid-template-columns: none; max-width: 720px; animation: crossfade var(--motion-standard) var(--ease-standard); }
.qa-body .scenario-panel p { margin-top: var(--space-3); color: var(--color-muted); }
.arrow-wrap { margin-top: var(--space-4); }
.arrow-wrap .arrow-link { border: 0; }

/* placeholder preview caption line */
.ph-line { font-size: var(--text-small); color: var(--color-muted); margin-top: 6px; line-height: 1.5; }
.s--dark .ph-line { color: var(--color-light-muted); }

/* engagement format matrix */
.format-grid .fmt { font-size: var(--text-ui); line-height: 1.55; color: var(--color-muted); margin-top: var(--space-3); max-width: 46ch; }
.format-grid .fmt-k { display: block; font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); margin-bottom: 2px; letter-spacing: 0.02em; text-transform: uppercase; }

/* built for different teams */
.teams { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: clamp(24px, 3.5vw, 44px); }
.teams > div { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--color-border-strong); border-left: 1px solid var(--color-border-strong); }
.teams > div:nth-child(3n+1) { border-left: 0; }
.teams > div:nth-child(-n+3) { border-top: 0; }
.teams h4 { font-family: var(--font-display); font-size: var(--text-h3); font-weight: 600; margin-bottom: var(--space-2); letter-spacing: -0.012em; }
.teams p { font-size: var(--text-ui); line-height: 1.55; color: var(--color-muted); max-width: 40ch; }
@media (max-width: 820px) {
  .teams { grid-template-columns: 1fr 1fr; }
  .teams > div { border-top: 1px solid var(--color-border-strong); }
  .teams > div:nth-child(3n+1) { border-left: 1px solid var(--color-border-strong); }
  .teams > div:nth-child(2n+1) { border-left: 0; }
  .teams > div:nth-child(-n+3) { border-top: 1px solid var(--color-border-strong); }
  .teams > div:nth-child(-n+2) { border-top: 0; }
}
@media (max-width: 520px) {
  .teams { grid-template-columns: 1fr; }
  .teams > div, .teams > div:nth-child(n) { border-left: 0; border-top: 1px solid var(--color-border-strong); padding: var(--space-4) 0; }
  .teams > div:first-child { border-top: 0; }
}

/* learning-loop return cue */
.loop-return { margin-top: var(--space-5); padding-left: var(--space-5); position: relative; font-family: var(--font-display); font-style: italic; color: var(--color-accent); max-width: 56ch; }
.loop-return::before { content: "\21BA"; position: absolute; left: 0; top: -2px; font-size: 1.4rem; font-style: normal; }

/* services: representative assignment note */
.route-eg { margin-top: var(--space-4); padding-left: var(--space-4); border-left: 2px solid var(--color-accent); font-family: var(--font-display); font-style: italic; color: var(--color-ink); max-width: 60ch; }

/* operating regions */
.region-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); margin-top: clamp(24px, 3vw, 40px); }
.region-list > div { border-top: 2px solid var(--color-accent); padding-top: var(--space-3); }
.region-list h4 { font-family: var(--font-display); font-size: var(--text-h3); font-weight: 600; }
.region-list p { font-size: var(--text-ui); color: var(--color-muted); margin-top: var(--space-2); }
@media (max-width: 640px) { .region-list { grid-template-columns: 1fr; gap: var(--space-4); } }

/* ---------- output list (concrete deliverables as boxed items) ---------- */
.deliverables { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.deliverables li {
  font-family: var(--font-ui); font-size: var(--text-small); font-weight: 500;
  color: var(--color-ink); background: var(--color-surface);
  border: var(--border-standard); border-radius: 9px; padding: 8px 12px; line-height: 1.2;
}
.s--dark .deliverables li { background: var(--color-dark-surface); border-color: var(--color-border-dark); color: var(--color-light-ink); }
.s--tint .deliverables li { background: var(--color-paper); }

/* ---------- anatomy viewer ---------- */
.anatomy { display: grid; grid-template-columns: 7fr 5fr; gap: clamp(24px, 4vw, 56px); align-items: start; }
.anatomy-stage { position: relative; }
.anatomy-stage .ph { aspect-ratio: 3 / 2; }
.anatomy-controls { position: absolute; inset: 0; margin: 0; padding: 0; list-style: none; }
.anatomy-dot {
  position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%);
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-surface); border: 2px solid var(--color-accent); color: var(--color-accent);
  font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600;
  display: grid; place-items: center; cursor: pointer;
  transition: background var(--motion-fast), color var(--motion-fast), transform var(--motion-fast) var(--ease-standard);
}
.anatomy-dot[aria-selected="true"] { background: var(--color-accent); color: var(--color-light-ink); transform: translate(-50%, -50%) scale(1.18); }
.anatomy-info { border-left: 3px solid var(--color-accent); padding-left: var(--space-4); }
.anatomy-info .step-k { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); }
.anatomy-info h3 { margin: var(--space-2) 0; }
.anatomy-info p { color: var(--color-muted); }
.anatomy-panel { display: none; }
.anatomy-panel.on { display: block; animation: crossfade var(--motion-standard) var(--ease-standard); }
.s--dark .anatomy-dot { background: var(--color-dark-surface); }

@media (max-width: 900px) {
  .anatomy { grid-template-columns: 1fr; }
  .anatomy-stage { order: -1; }
  .anatomy-controls {
    position: static; display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-4);
  }
  .anatomy-dot { position: static; transform: none; width: 40px; height: 40px; }
  .anatomy-dot[aria-selected="true"] { transform: none; }
}

/* ---------- output viewer ---------- */
.output-thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-2); margin-bottom: clamp(24px, 4vw, 40px); }
.output-panel { display: none; grid-template-columns: 7fr 5fr; gap: clamp(24px, 4vw, 56px); align-items: start; }
.output-panel.on { display: grid; animation: crossfade var(--motion-standard) var(--ease-standard); }
.output-panel .ph { aspect-ratio: 4 / 3; }
@media (max-width: 900px) { .output-panel.on { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .output-thumbs { grid-template-columns: 1fr 1fr; } }
.output-thumbs button {
  font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; line-height: 1.25;
  text-align: left; padding: 12px; border-radius: 10px; cursor: pointer;
  background: var(--color-surface); border: var(--border-standard); color: var(--color-muted);
  transition: border-color var(--motion-fast), color var(--motion-fast), background var(--motion-fast);
}
.output-thumbs button[aria-selected="true"] { border-color: var(--color-accent); color: var(--color-ink); background: var(--color-tint); }
.output-def { display: none; }
.output-def.on { display: block; animation: crossfade var(--motion-standard) var(--ease-standard); }
.output-def h3 { max-width: 20ch; }
.output-def .def-row, .output-panel .def-row { margin-top: var(--space-4); }
.def-row .row-k { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); display: block; margin-bottom: var(--space-1); letter-spacing: 0.02em; text-transform: uppercase; }
.def-row p { font-size: var(--text-ui); color: var(--color-muted); }

/* intelligence-item layout */
.intel-grid { display: grid; grid-template-columns: 7fr 5fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.intel-preview { position: sticky; top: 110px; }
@media (max-width: 900px) { .intel-grid { grid-template-columns: 1fr; } .intel-preview { position: static; order: -1; } }

/* end-to-end split */
.end-to-end { display: grid; grid-template-columns: 6fr 5fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
@media (max-width: 820px) { .end-to-end { grid-template-columns: 1fr; } .end-to-end .ph { order: -1; } }
.plain-list { list-style: none; display: grid; gap: var(--space-3); }
.plain-list li { font-family: var(--font-display); font-size: var(--text-h3); line-height: 1.2; padding-left: var(--space-4); border-left: 2px solid var(--color-accent); }
@media (max-width: 900px) { .output-viewer { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .output-thumbs { grid-template-columns: 1fr 1fr; } }

/* ---------- engagement switcher ---------- */
.engagement .segmented { display: flex; }
.engagement-panel { display: none; }
.engagement-panel.on { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--space-5) var(--space-4); animation: crossfade var(--motion-standard) var(--ease-standard); }
.engagement-cell h4 { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); margin-bottom: var(--space-2); }
.engagement-cell p { font-size: var(--text-ui); line-height: 1.5; color: var(--color-muted); }
.engagement-panel .engagement-cta { grid-column: 1 / -1; margin-top: var(--space-2); }
@media (max-width: 900px) { .engagement-panel.on { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .engagement-panel.on { grid-template-columns: 1fr; } }

/* ---------- connected process ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); position: relative; }
.process::before {
  content: ""; position: absolute; left: 5%; right: 5%; top: 22px; height: 2px;
  background: var(--color-border-strong); z-index: 0;
}
.process-step {
  position: relative; z-index: 1; text-align: left; background: none; border: 0; cursor: pointer;
  font-family: var(--font-ui);
}
.process-node {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: var(--color-surface); border: 2px solid var(--color-border-strong); color: var(--color-muted);
  font-weight: 600; margin-bottom: var(--space-3);
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast);
}
.process-step[aria-selected="true"] .process-node { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-light-ink); }
.process-step .p-name { font-size: var(--text-ui); font-weight: 600; color: var(--color-ink); display: block; }
.s--dark .process-node { background: var(--color-dark-surface); }
.s--dark .process-step .p-name { color: var(--color-light-ink); }
.process-detail { margin-top: var(--space-6); }
.process-panel { display: none; max-width: 62ch; }
.process-panel.on { display: block; animation: crossfade var(--motion-standard) var(--ease-standard); }
.process-panel p { color: var(--color-muted); }
@media (max-width: 720px) {
  .process { grid-template-columns: 1fr; gap: 0; }
  .process::before { left: 22px; right: auto; top: 5%; bottom: 5%; width: 2px; height: auto; }
  .process-step { display: grid; grid-template-columns: 44px 1fr; gap: var(--space-3); align-items: center; padding-block: var(--space-3); }
  .process-node { margin-bottom: 0; }
  .process-detail { margin-top: var(--space-4); }
}

/* ---------- connected handoff diagram ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2); align-items: stretch; margin-top: clamp(28px, 4vw, 44px); }
.flow--3 { grid-template-columns: repeat(3, 1fr); }
.flow--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 980px) { .flow--5 { grid-template-columns: 1fr 1fr; } }
.flow-node {
  background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-control);
  padding: var(--space-4); position: relative;
}
.flow-node h4 { font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600; margin-bottom: var(--space-2); }
.flow-node p { font-size: var(--text-small); line-height: 1.5; color: var(--color-muted); }
.flow-node:not(:last-child)::after {
  content: "\2192"; position: absolute; right: -14px; top: 50%; transform: translateY(-50%);
  color: var(--color-accent); font-size: 1.2rem; z-index: 2;
}
.s--dark .flow-node { background: var(--color-dark-surface); border-color: var(--color-border-dark); }
@media (max-width: 820px) {
  .flow { grid-template-columns: 1fr; gap: var(--space-5); }
  .flow-node:not(:last-child)::after { content: "\2193"; right: auto; left: var(--space-4); top: auto; bottom: -20px; transform: none; }
}

/* ---------- column notes (editorial: vertical rule, serif numerals) ---------- */
.cols { display: grid; gap: var(--space-7) 0; margin-top: clamp(24px, 3.5vw, 44px); counter-reset: col; }
.cols--2 { grid-template-columns: repeat(2, 1fr); }
.cols--3 { grid-template-columns: repeat(3, 1fr); }
.cols--4 { grid-template-columns: repeat(4, 1fr); }
.cols > div { counter-increment: col; padding: 0 var(--space-6); border-left: 1px solid var(--color-border-strong); }
.cols > div:first-child { border-left: 0; }
.cols--num > div::before {
  content: counter(col, decimal-leading-zero);
  display: block; font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.4rem, 3.4vw, 3.4rem); line-height: 1; color: var(--color-accent);
  margin-bottom: var(--space-3); letter-spacing: -0.02em;
}
.cols h4 { font-family: var(--font-display); font-size: var(--text-h3); font-weight: 600; margin-bottom: var(--space-3); letter-spacing: -0.012em; }
.cols p { font-size: var(--text-ui); line-height: 1.6; color: var(--color-muted); max-width: 42ch; }
.s--dark .cols p { color: var(--color-light-muted); }
.s--dark .cols > div { border-left-color: var(--color-border-dark); }
@media (max-width: 900px) {
  .cols--3, .cols--4 { grid-template-columns: 1fr 1fr; gap: var(--space-6) 0; }
  .cols > div:nth-child(2n+1) { border-left: 0; }
}
@media (max-width: 600px) {
  .cols--2, .cols--3, .cols--4 { grid-template-columns: 1fr; }
  .cols > div { border-left: 0; border-top: 1px solid var(--color-border-strong); padding: var(--space-4) 0 0; }
  .cols > div:first-child { border-top: 0; }
  .cols--num > div::before { font-size: 2rem; margin-bottom: var(--space-2); }
}

/* ---------- numbered steps (sequence without boxed arrows) ---------- */
.steps { list-style: none; counter-reset: step; display: grid; gap: var(--space-4); margin-top: clamp(22px, 3vw, 36px); }
.steps > li { counter-increment: step; position: relative; padding-left: 46px; }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: -2px;
  width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--color-accent);
  display: grid; place-items: center; color: var(--color-accent);
  font-family: var(--font-ui); font-weight: 600; font-size: var(--text-small);
}
.steps h4 { font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600; margin-bottom: var(--space-1); }
.steps p { font-size: var(--text-ui); line-height: 1.55; color: var(--color-muted); max-width: 52ch; }
.s--dark .steps p { color: var(--color-light-muted); }
.s--dark .steps > li::before { color: var(--color-light-ink); border-color: var(--color-border-dark); }
@media (min-width: 760px) {
  .steps--row { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
  .steps--row.steps--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- two-column comparison ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); margin-top: clamp(28px, 4vw, 44px); }
.compare-col { background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-panel); padding: var(--space-6); }
.compare-col h3 { margin-bottom: var(--space-4); }
.compare-col ul { list-style: none; display: grid; gap: var(--space-3); }
.compare-col li { font-size: var(--text-ui); line-height: 1.5; padding-left: var(--space-5); position: relative; }
.compare-col li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 8px; height: 8px; border-radius: 2px; background: var(--color-accent); }
@media (max-width: 720px) { .compare { grid-template-columns: 1fr; } }

/* ---------- generic tile grid ---------- */
.tiles { display: grid; gap: var(--space-4); margin-top: clamp(28px, 4vw, 44px); }
.tiles--3 { grid-template-columns: repeat(3, 1fr); }
.tiles--4 { grid-template-columns: repeat(4, 1fr); }
.tile {
  background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-panel);
  padding: var(--space-6);
}
.tile .tile-k { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-accent); }
.tile h3 { margin: var(--space-3) 0 var(--space-2); font-size: var(--text-h3); }
.tile p { font-size: var(--text-ui); line-height: 1.55; color: var(--color-muted); max-width: 42ch; }
a.tile { transition: border-color var(--motion-fast) var(--ease-standard); }
a.tile:hover { border-color: var(--color-accent); }
.s--dark .tile { background: var(--color-dark-surface); border-color: var(--color-border-dark); }
@media (max-width: 900px) { .tiles--3, .tiles--4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .tiles--3, .tiles--4 { grid-template-columns: 1fr; } }

/* ---------- FAQ disclosure ---------- */
.faq { margin-top: clamp(28px, 4vw, 44px); max-width: 820px; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-4) var(--space-3); font-family: var(--font-display);
  font-size: var(--text-h3); font-weight: 500; color: var(--color-ink); line-height: 1.3;
}
.faq-item.open { background: var(--color-tint); border-radius: var(--radius-control); }
.faq-chevron { flex: none; width: 12px; height: 12px; border-right: 2px solid var(--color-accent); border-bottom: 2px solid var(--color-accent); transform: rotate(45deg) translate(-2px, -2px); transition: transform var(--motion-standard) var(--ease-standard); }
.faq-item.open .faq-chevron { transform: rotate(-135deg) translate(-2px, -2px); }
.faq-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--motion-slow) var(--ease-standard); }
.faq-item.open .faq-panel { grid-template-rows: 1fr; }
.faq-panel-inner { overflow: hidden; min-height: 0; }
.faq-panel p { padding: 0 var(--space-3) var(--space-5); max-width: 68ch; color: var(--color-muted); }
.js .faq-panel p { font-size: var(--text-ui); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
.contact-grid .contact-intro .lede { margin-top: var(--space-4); }
.contact-grid .contact-mail { display: inline-block; margin-top: var(--space-5); font-family: var(--font-ui); font-weight: 600; color: var(--color-accent); }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- form ---------- */
.form-wrap { background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-panel); padding: clamp(24px, 3vw, 40px); }
.form-route { display: grid; gap: 6px; margin-bottom: var(--space-5); }
.form-route button {
  text-align: left; font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600;
  padding: 14px 16px; border-radius: var(--radius-control); cursor: pointer;
  background: var(--color-paper); border: var(--border-standard); color: var(--color-muted);
  transition: border-color var(--motion-fast), color var(--motion-fast);
}
.form-route button[aria-selected="true"] { border-color: var(--color-accent); color: var(--color-ink); }
.field { display: grid; gap: 6px; margin-bottom: var(--space-4); }
.field label { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-ink); }
.field label .opt { color: var(--color-muted); font-weight: 400; }
.field input, .field textarea, .field select {
  font-family: var(--font-ui); font-size: var(--text-body); color: var(--color-ink);
  background: var(--color-paper); border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control); padding: 14px 16px; width: 100%; min-height: 52px; resize: vertical;
}
.field textarea { min-height: 140px; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(33, 30, 23, 0.16); }
.field .err { font-size: var(--text-small); color: var(--color-accent-hover); font-weight: 600; display: none; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid textarea { border-color: var(--color-accent-hover); }
.add-context { border: 0; padding: 0; margin: 0 0 var(--space-4); }
.add-context summary {
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600; color: var(--color-accent);
  cursor: pointer; list-style: none; display: inline-flex; align-items: center; gap: 8px; padding: 8px 0;
}
.add-context summary::-webkit-details-marker { display: none; }
.add-context summary::before { content: "+"; font-size: 1.1em; }
.add-context[open] summary::before { content: "\2013"; }
.form-success { display: none; }
.form-success.on { display: block; }
.form-success h3 { margin-bottom: var(--space-3); }
.form-success p { color: var(--color-muted); }

/* ---------- example engagement (scroll-linked) ---------- */
.walkthrough { display: grid; grid-template-columns: 2fr 4fr 6fr; gap: clamp(20px, 3vw, 44px); align-items: start; }
.chapter-rail { position: sticky; top: 110px; list-style: none; display: grid; gap: var(--space-2); }
.chapter-rail button {
  text-align: left; background: none; border: 0; cursor: pointer; width: 100%;
  font-family: var(--font-ui); font-size: var(--text-ui); font-weight: 600; color: var(--color-muted);
  padding: 10px 12px; border-radius: 10px; border-left: 2px solid var(--color-border);
  transition: color var(--motion-fast), border-color var(--motion-fast);
}
.chapter-rail button[aria-current="true"] { color: var(--color-ink); border-left-color: var(--color-accent); background: var(--color-tint); }
.chapter { padding-block: clamp(40px, 8vh, 96px); border-bottom: 1px solid var(--color-border); }
.chapter:first-child { padding-top: 0; }
.chapter:last-child { border-bottom: 0; }
.chapter .chapter-k { font-family: var(--font-display); font-size: clamp(2rem, 3.4vw, 3.2rem); font-weight: 600; line-height: 1; color: var(--color-accent); letter-spacing: -0.02em; }
.chapter h2 { font-size: var(--text-h2); margin: var(--space-2) 0 var(--space-4); }
.chapter p { color: var(--color-muted); }
.chapter p + p { margin-top: 1em; }
.walk-visual { position: sticky; top: 110px; }
.walk-visual .ph { aspect-ratio: 4 / 3; display: none; }
.walk-visual .ph.on { display: flex; animation: crossfade var(--motion-slow) var(--ease-standard); }
@media (max-width: 960px) {
  .walkthrough { grid-template-columns: 1fr; }
  .chapter-rail { position: static; grid-auto-flow: column; overflow-x: auto; }
  .walk-visual { position: static; margin-bottom: var(--space-6); order: -1; }
  .walk-visual .ph { display: none; }
  .walk-visual .ph.on { display: flex; }
}

/* ---------- partner strip ---------- */
.partners { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-top: clamp(28px, 4vw, 44px); }
.partner { background: var(--color-surface); border: var(--border-standard); border-radius: var(--radius-panel); padding: var(--space-5); }
.partner .partner-logo {
  height: 32px; display: flex; align-items: center;
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--color-ink);
  border-bottom: 1px dashed var(--color-border-strong); padding-bottom: var(--space-3); margin-bottom: var(--space-3);
}
.partner p { font-size: var(--text-ui); line-height: 1.5; color: var(--color-muted); }
@media (max-width: 900px) { .partners { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .partners { grid-template-columns: 1fr; } }

/* ---------- prose ---------- */
.prose { max-width: 68ch; }
.prose p { font-size: var(--text-body-lg); line-height: 1.65; color: var(--color-ink); }
.prose p + p { margin-top: 1.1em; }
.prose--serif p { font-family: var(--font-display); }

/* ---------- footer ---------- */
.site-footer { background: var(--color-dark); color: var(--color-light-ink); padding-block: clamp(64px, 9vw, 112px) 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: clamp(32px, 5vw, 64px); }
.footer-positioning { font-family: var(--font-display); font-size: var(--text-h3); line-height: 1.35; max-width: 22ch; color: var(--color-light-ink); }
.site-footer h4 { font-family: var(--font-ui); font-size: var(--text-small); font-weight: 600; color: var(--color-light-muted); margin-bottom: var(--space-4); }
.site-footer ul { list-style: none; display: grid; gap: var(--space-3); }
.site-footer a { font-family: var(--font-ui); font-size: var(--text-ui); color: var(--color-light-ink); opacity: 0.82; transition: opacity var(--motion-fast); }
.site-footer a:hover { opacity: 1; }
.footer-base {
  margin-top: clamp(48px, 7vw, 80px); padding-top: var(--space-5); border-top: 1px solid var(--color-border-dark);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3);
  font-family: var(--font-ui); font-size: var(--text-small); color: var(--color-light-muted);
}
.footer-base .footer-legal { display: flex; gap: var(--space-4); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-positioning { grid-column: 1 / -1; } }

/* ---------- reveal / motion ---------- */
.js .reveal { opacity: 0; transform: translateY(14px); }
.js .reveal.in { opacity: 1; transform: none; transition: opacity var(--motion-slow) var(--ease-standard), transform var(--motion-slow) var(--ease-standard); }
.js [data-stagger] > * { opacity: 0; transform: translateY(16px); }
.js [data-stagger].in > * { opacity: 1; transform: none; transition: opacity var(--motion-slow) var(--ease-standard), transform var(--motion-slow) var(--ease-standard); }
.js [data-stagger].in > *:nth-child(2) { transition-delay: 60ms; }
.js [data-stagger].in > *:nth-child(3) { transition-delay: 120ms; }
.js [data-stagger].in > *:nth-child(4) { transition-delay: 180ms; }
.js [data-stagger].in > *:nth-child(5) { transition-delay: 240ms; }
.js [data-stagger].in > *:nth-child(6) { transition-delay: 300ms; }
.js [data-stagger]:not(.in) > * { animation: unhide 0s linear 3s forwards; }
.js .reveal:not(.in) { animation: unhide 0s linear 3s forwards; }

@keyframes unhide { to { opacity: 1; transform: none; } }
@keyframes crossfade { from { opacity: 0; transform: translateX(6px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .reveal, .js [data-stagger] > * { opacity: 1 !important; transform: none !important; }
  .route-panel.on, .scenario-panel.on, .output-def.on, .anatomy-panel.on, .process-panel.on, .walk-visual .ph.on { animation: none !important; }
}