/* Layout: one 980px reading column on white; quiet grey bands separate the sections; type does the work.
   Fonts: the visitor's system face (SF Pro on Apple devices, Segoe UI on Windows, Roboto on Android),
   so nothing is loaded from Google and the site reads like a native page on each device.
   Theme: always light, whatever the visitor's device setting, like apple.com. */
:root {
  --bg: #ffffff;
  --band: #f5f5f7;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --accent: #1f4e8c;   /* one navy-blue, close to the CV navy; links and buttons only */
  --on-accent: #ffffff;

  --f-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --s-hero: clamp(2.75rem, 1.8rem + 4.4vw, 5rem);
  --s-1: clamp(2.25rem, 1.6rem + 3vw, 3.5rem);
  --s-2: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);
  --s-3: 1.3125rem;
  --s-4: 1.0625rem;
  --s-5: 0.9375rem;
  --s-6: 0.8125rem;

  --wrap: 980px;
  --gutter: clamp(16px, 4vw, 32px);
  --radius: 18px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--f-sans); font-size: var(--s-4); line-height: 1.5; letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3, h4 { font-family: var(--f-display); line-height: 1.1; text-wrap: balance; margin: 0; font-weight: 600; letter-spacing: -0.022em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--bg); padding: 8px 12px; z-index: 10; }

/* ---------- header ---------- */
.top {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
}
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0 24px; min-height: 52px; }
.brand { font-weight: 600; font-size: var(--s-5); color: var(--ink); margin-right: auto; white-space: nowrap; padding-block: 14px; }
.brand:hover { text-decoration: none; }
.lang { order: 3; font-size: var(--s-6); font-weight: 500; color: var(--muted); padding: 4px 0; }
.lang:hover { color: var(--ink); text-decoration: none; }
.nav {
  order: 4; flex-basis: 100%; display: flex; gap: 22px; align-items: center;
  overflow-x: auto; scrollbar-width: none; padding-bottom: 10px; margin-top: -4px;
}
.nav::-webkit-scrollbar { display: none; }
.nav a { font-size: var(--s-6); color: var(--muted); white-space: nowrap; }
.nav a:hover { color: var(--ink); text-decoration: none; }
@media (min-width: 900px) {
  .nav { order: 2; flex-basis: auto; padding-bottom: 0; margin-top: 0; overflow: visible; }
}

/* ---------- sections ---------- */
section { padding-block: clamp(64px, 9vw, 120px); }
.band { background: var(--band); }
.label { font-size: var(--s-6); font-weight: 600; color: var(--muted); letter-spacing: 0; }
.h2 { font-size: var(--s-2); }
.sec-head { display: grid; gap: 12px; margin-bottom: clamp(32px, 4vw, 48px); max-width: 44rem; }
.sec-head p { color: var(--muted); font-size: var(--s-4); }
.rule { display: none; }

/* ---------- hero ---------- */
.hero { padding-block: clamp(72px, 11vw, 150px) clamp(64px, 9vw, 120px); }
.hero .wrap { display: grid; gap: 20px; }
.hero h1 { font-size: var(--s-hero); font-weight: 700; letter-spacing: -0.035em; line-height: 1.02; }
.hero .role { font-family: var(--f-display); font-size: clamp(1.35rem, 1.1rem + 1.1vw, 2rem); font-weight: 600; color: var(--muted); letter-spacing: -0.02em; }
.functions { display: flex; flex-wrap: wrap; gap: 6px 0; margin-top: 4px; color: var(--ink); font-size: var(--s-5); }
.functions li:not(:last-child)::after { content: "·"; margin-inline: 10px; color: var(--muted); }
.hero .summary { max-width: 38rem; font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem); color: var(--muted); line-height: 1.5; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; font-size: var(--s-5); font-weight: 500;
  padding: 11px 22px; border-radius: 980px; border: 1px solid var(--accent);
}
.btn:hover { text-decoration: none; }
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { color: var(--accent); }
.btn.ghost:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.marking { display: none; }

/* ---------- results ---------- */
.board { background: var(--band); }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: clamp(32px, 4vw, 48px) 32px; }
.kpi { display: grid; gap: 8px; align-content: start; }
.kpi .v {
  font-family: var(--f-display); font-weight: 600; font-size: clamp(2.75rem, 2.2rem + 2vw, 3.75rem);
  font-variant-numeric: tabular-nums; letter-spacing: -0.04em; line-height: 1;
}
.kpi .v .u { font-size: 0.55em; letter-spacing: -0.01em; margin-inline: 0.08em; }
.kpi .t { font-size: var(--s-4); max-width: 20rem; }
.kpi .src { font-size: var(--s-6); color: var(--muted); }

/* ---------- pillars ---------- */
.pillars { display: grid; grid-template-columns: 1fr; gap: 32px 28px; }
@media (min-width: 600px) { .pillars { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .pillars { grid-template-columns: repeat(5, 1fr); } }
.pillar { display: grid; gap: 8px; align-content: start; padding-top: 18px; border-top: 1px solid var(--line); }
.pillar h3 { font-size: var(--s-4); }
.pillar p { font-size: var(--s-5); color: var(--muted); }

/* ---------- experience ---------- */
.lane { display: grid; }
.stop { display: grid; grid-template-columns: 1fr; gap: 6px 40px; padding-block: 32px; border-top: 1px solid var(--line); }
@media (min-width: 760px) { .stop { grid-template-columns: 140px 1fr; } }
.stop .yrs { font-size: var(--s-5); color: var(--muted); font-variant-numeric: tabular-nums; padding-top: 3px; }
.stop .body { display: grid; gap: 8px; min-width: 0; }
.stop .co { font-size: var(--s-6); font-weight: 600; color: var(--muted); }
.stop h3 { font-size: var(--s-3); }
.stop .scope { color: var(--muted); font-size: var(--s-5); max-width: 44rem; }
.points { display: grid; gap: 8px; margin-top: 6px; max-width: 44rem; }
.points li { padding-left: 18px; position: relative; }
.points li::before { content: ""; position: absolute; left: 2px; top: 0.66em; width: 5px; height: 5px; border-radius: 50%; background: var(--muted); }
.case-link { display: inline-block; margin-top: 8px; font-size: var(--s-5); }
.earlier { padding-block: 24px 0; border-top: 1px solid var(--line); display: grid; gap: 6px 40px; color: var(--muted); font-size: var(--s-5); }
@media (min-width: 760px) { .earlier { grid-template-columns: 140px 1fr; } }

/* ---------- systems & AI ---------- */
.sys-intro { max-width: 44rem; font-size: var(--s-4); color: var(--muted); }
.sub-label { margin-top: 40px; }
.tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr)); gap: 16px; margin-top: 14px; }
.tool { background: var(--band); border-radius: var(--radius); padding: 28px; display: grid; gap: 10px; align-content: start; }
.tool .kind { font-size: var(--s-6); color: var(--muted); }
.tool h3 { font-size: var(--s-3); }
.tool p { font-size: var(--s-5); color: var(--muted); }
.tool a { font-size: var(--s-5); margin-top: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chips li { font-size: var(--s-6); padding: 7px 14px; border-radius: 980px; border: 1px solid var(--line); color: var(--ink); }

/* ---------- education ---------- */
.two { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 760px) { .two { grid-template-columns: 1fr 1fr; } }
.rows { display: grid; margin-top: 12px; }
.rows li { display: grid; grid-template-columns: 1fr auto; gap: 2px 16px; padding-block: 14px; border-top: 1px solid var(--line); font-size: var(--s-5); }
.rows .w { font-weight: 600; min-width: 0; }
.rows .y { color: var(--muted); font-variant-numeric: tabular-nums; }
.rows .d { grid-column: 1 / -1; color: var(--muted); }

/* ---------- activity ---------- */
.acts li { display: grid; grid-template-columns: 1fr; gap: 4px 40px; padding-block: 18px; border-top: 1px solid var(--line); }
@media (min-width: 760px) { .acts li { grid-template-columns: 140px 1fr; } }
.acts .y { font-size: var(--s-5); color: var(--muted); font-variant-numeric: tabular-nums; }
.acts p { max-width: 44rem; min-width: 0; }

/* ---------- contact ---------- */
.contact { background: var(--band); }
.contact-grid { display: grid; gap: 24px; }
.contact-rows { display: grid; max-width: 40rem; }
.contact-rows li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding-block: 16px; border-top: 1px solid var(--line); }
.contact-rows .k { font-size: var(--s-6); font-weight: 600; color: var(--muted); width: 90px; }
.contact-rows .val { font-size: var(--s-4); overflow-wrap: anywhere; min-width: 0; }
.copy { font: inherit; font-size: var(--s-6); background: none; color: var(--accent); border: 1px solid var(--line); border-radius: 980px; padding: 5px 12px; cursor: pointer; margin-left: auto; }
.copy:hover { border-color: var(--accent); }

footer { padding-block: 24px; border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; font-size: var(--s-6); color: var(--muted); }

/* ---------- inner pages ---------- */
.page-hero { padding-block: clamp(64px, 10vw, 128px) 40px; }
.page-hero .wrap { display: grid; gap: 18px; }
.page-hero h1 { font-size: var(--s-1); font-weight: 700; letter-spacing: -0.03em; }
.page-hero h1.case-h1 { max-width: 22ch; }
.page-hero p { max-width: 40rem; font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem); color: var(--muted); }
.after-hero { padding-block-start: 24px; }
.back { padding-block: 40px 0; font-size: var(--s-5); }

/* ---------- 100 days ---------- */
.track { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 900px) { .track { grid-template-columns: repeat(3, 1fr); } }
.phase { display: grid; gap: 14px; align-content: start; padding: 28px; background: var(--band); border-radius: var(--radius); min-width: 0; }
.phase .when { display: flex; align-items: baseline; gap: 8px; }
.phase .when .u { font-size: var(--s-6); font-weight: 600; color: var(--muted); }
.phase .when .n { font-family: var(--f-display); font-size: 2.25rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.phase h2 { font-size: var(--s-3); }
.phase .points li { font-size: var(--s-5); }
.phase .out { margin-top: 8px; padding-top: 14px; border-top: 1px solid var(--line); font-size: var(--s-5); }
.phase .out .label { display: block; margin-bottom: 4px; }

/* ---------- case studies ---------- */
.case-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 16px; }
.case-card { display: grid; gap: 12px; align-content: start; padding: 32px; background: var(--band); border-radius: var(--radius); color: var(--ink); }
.case-card:hover { text-decoration: none; }
.case-card:hover .more { text-decoration: underline; }
.case-card h2 { font-size: var(--s-3); }
.case-card p { color: var(--muted); font-size: var(--s-5); }
.case-card .more { font-size: var(--s-5); color: var(--accent); }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 0 32px; margin: 12px 0 0; }
.facts div { padding-block: 14px; border-top: 1px solid var(--line); min-width: 0; }
.facts dt { font-size: var(--s-6); font-weight: 600; color: var(--muted); }
.facts dd { margin: 4px 0 0; font-size: var(--s-5); }

.case-body { display: grid; gap: clamp(64px, 8vw, 104px); }
.block { display: grid; gap: 18px; min-width: 0; }
.prose { max-width: 44rem; }

.ba { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 12px; }
@media (min-width: 900px) { .ba { grid-template-columns: 1fr auto 1fr; align-items: stretch; } }
.ba-col { display: grid; gap: 14px; align-content: start; padding: 26px; background: var(--band); border-radius: var(--radius); min-width: 0; }
.ba-arrow { align-self: center; justify-self: center; font-size: 1.5rem; color: var(--muted); }
@media (max-width: 899px) { .ba-arrow { transform: rotate(90deg); } }
.ba-depts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
@media (min-width: 520px) { .ba-depts { grid-template-columns: repeat(4, 1fr); } }
.ba-depts li { font-size: var(--s-6); font-weight: 600; text-align: center; padding: 8px 4px; border: 1px dashed var(--muted); border-radius: 8px; color: var(--muted); }
.ba-acts { display: flex; flex-wrap: wrap; gap: 6px; }
.ba-acts li { font-size: var(--s-6); padding: 5px 10px; border-radius: 980px; background: var(--bg); }
.ba-acts.scattered li:nth-child(odd) { transform: translateY(3px); }
.ba-acts.scattered li:nth-child(3n) { transform: translateY(-2px); }
.ba-dept { font-weight: 600; font-size: var(--s-5); text-align: center; padding: 10px; border-radius: 10px; background: var(--accent); color: var(--on-accent); }
.ba-acts.tree { padding-top: 14px; border-top: 2px solid var(--accent); }
.ba-note { font-size: var(--s-6); color: var(--muted); }

.method li { font-size: var(--s-5); }
.tbl { overflow-x: auto; margin-top: 10px; }
.findings { width: 100%; border-collapse: collapse; font-size: var(--s-5); }
.findings th, .findings td { text-align: left; padding: 11px 0; border-top: 1px solid var(--line); vertical-align: top; }
.findings th { font-weight: 400; padding-right: 16px; width: 55%; }
.findings td { font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }
.links { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 16px; }
.link { padding: 24px; background: var(--band); border-radius: var(--radius); display: grid; gap: 6px; align-content: start; }
.link h4 { font-size: var(--s-4); }
.link p { font-size: var(--s-5); color: var(--muted); }

.results li { font-size: var(--s-4); }
.carry { color: var(--muted); }
.sources { padding-top: 24px; border-top: 1px solid var(--line); }
.sources p:last-child { font-size: var(--s-6); color: var(--muted); max-width: 52rem; }