/* ============================================================
   Alvaro Miguel Rivera — shared design system
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ink: #0f1b2d;
  --ink-2: #1e2c40;
  --muted: #54627a;
  --faint: #5d6e89;
  --line: #e4e9f1;
  --line-2: #eef2f7;
  --bg: #ffffff;
  --tint: #f5f8fc;
  --tint-2: #eef3fa;
  --blue: #1f5fe0;
  --blue-deep: #163e9c;
  --blue-ink: #0d2a6b;
  --status: #0d9488;
  --status-deep: #0f766e;
  --status-soft: #e6f5f2;
  --shadow: 0 1px 2px rgba(15,27,45,.04), 0 12px 30px -12px rgba(15,27,45,.14);
  --shadow-lg: 0 2px 4px rgba(15,27,45,.05), 0 30px 60px -20px rgba(15,27,45,.22);
  --r: 14px;
  --maxw: 1180px;
  --text-display: clamp(2.125rem,4.4vw,3.375rem);
  --text-headline: clamp(1.625rem,3.2vw,2.375rem);
  --text-title: 1.375rem;
  --text-body: 1rem;
  --text-small: .875rem;
  --text-label: .75rem;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-kerning: normal;
  font-optical-sizing: auto;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 100;
  padding: 8px 16px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  border-radius: 8px;
}
.skip-link:focus { left: 16px; }

/* ---------- focus ---------- */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}
.foot :focus-visible { outline-color: rgba(255,255,255,.85); }

/* ---------- typography ---------- */
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: .04em;
  color: var(--blue-ink);
  font-weight: 500;
}
.eyebrow + h2 { margin-top: 10px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 500;
  font-size: 15px;
  line-height: 1;
  padding: 14px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: .18s ease;
  white-space: nowrap;
  min-height: 44px;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px -8px rgba(31,95,224,.6); }
.btn-primary:hover { background: var(--blue-deep); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: #eef3fa; }
.btn-arrow svg { transition: .18s ease; }
.btn-arrow:hover svg { transform: translateX(3px); }

/* ---------- nav ---------- */
nav.site {
  border-bottom: 1px solid var(--line-2);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(10px);
  z-index: 40;
}
nav.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .bx b { font-size: 15px; font-weight: 600; line-height: 1.2; display: block; color: var(--ink); }
.brand .bx .sub { font-size: 12px; color: var(--faint); font-family: var(--font-mono); }
.navlinks { display: flex; align-items: center; gap: 30px; }
.navlinks a { font-size: 14.5px; color: var(--muted); transition: .15s; }
.navlinks a:hover { color: var(--ink); }
.navlinks a.active { color: var(--ink); font-weight: 500; }
/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: .2s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- pulse animation ---------- */
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(13,148,136,.45); }
  70%  { box-shadow: 0 0 0 7px rgba(13,148,136,0); }
  100% { box-shadow: 0 0 0 0 rgba(13,148,136,0); }
}
.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status);
  animation: pulse 2.2s infinite;
}
@media (prefers-reduced-motion: reduce) {
  .pulse { animation: none; }
  html { scroll-behavior: auto; }
  .btn,
  .btn-arrow svg,
  .navlinks a,
  .nav-toggle span,
  .case,
  .qcard,
  .fcard .tick {
    transition: none;
  }
  .btn-primary:hover,
  .case:hover,
  .btn-arrow:hover svg {
    transform: none;
  }
}

/* ---------- dashboard frame ---------- */
.shot {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.shot img { display: block; width: 100%; height: auto; }
.dash-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-2);
  background: #fcfdff;
}
.dash-bar .dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dash-bar .dot:nth-child(1) { background: #ff5f57; }
.dash-bar .dot:nth-child(2) { background: #febc2e; }
.dash-bar .dot:nth-child(3) { background: #28c840; }
.dash-bar .title { margin-left: 6px; font-size: 12.5px; color: var(--muted); font-weight: 500; }
.dash-bar .pbi {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--blue-ink);
  text-transform: uppercase;
  background: var(--tint-2);
  padding: 4px 9px;
  border-radius: 6px;
  font-weight: 500;
}
.ph-shot {
  border: 1px dashed #c8d3e3;
  border-radius: var(--r);
  background: repeating-linear-gradient(135deg, #f5f8fc, #f5f8fc 11px, #eef3fa 11px, #eef3fa 22px);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  text-align: center;
}
.ph-shot span {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--faint);
  letter-spacing: .04em;
  padding: 8px 14px;
  background: rgba(255,255,255,.7);
  border-radius: 8px;
}
.thumb-img {
  display: block;
  width: 100%;
  height: 206px;
  object-fit: cover;
  object-position: top center;
  border: 1px solid var(--line-2);
  border-radius: 8px;
}

/* ---------- section scaffolding ---------- */
.sec { padding: 48px 0; }
.sec-head { margin-bottom: 28px; }
.sec-head h2 { font-size: clamp(26px,3.2vw,38px); font-weight: 600; letter-spacing: -.02em; line-height: 1.1; }
.sec-head p { color: var(--muted); font-size: 16px; margin-top: 12px; max-width: 600px; }
.split { display: grid; grid-template-columns: .62fr 1.38fr; gap: 48px; align-items: start; }

/* ================================================================
   HOMEPAGE
   ================================================================ */

.hero { padding: 36px 0 48px; }
.hero .wrap { display: grid; grid-template-columns: 1.04fr 1fr; gap: 64px; align-items: center; }
.hero h1 {
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: -.025em;
  font-weight: 600;
  margin: 20px 0 0;
  max-width: 13.5ch;
  text-wrap: balance;
}
.hero h1 em { font-style: normal; color: var(--blue); }
.hero .lead { color: var(--muted); font-size: 1.125rem; line-height: 1.58; margin-top: 22px; max-width: 34rem; text-wrap: pretty; }
.hero .cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero .meta { display: flex; align-items: center; flex-wrap: wrap; row-gap: 10px; gap: 18px; margin-top: 28px; font-size: 13.5px; color: var(--muted); }
.hero .avail { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: .78125rem; }
.hero .sep { width: 1px; height: 14px; background: var(--line); }
.hero a.li { color: var(--muted); }
.hero a.li:hover { color: var(--blue); }

.evidence {
  background: var(--tint);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  padding: 46px 0;
}
.evidence-wrap {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 54px;
  align-items: start;
}
.evidence-head h2 {
  font-size: var(--text-headline);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.1;
  text-wrap: balance;
}
.evidence-head p {
  color: var(--muted);
  font-size: var(--text-body);
  line-height: 1.58;
  margin-top: 16px;
  max-width: 440px;
  text-wrap: pretty;
}
.evidence-list {
  border-top: 1px solid var(--line);
}
.evidence-item {
  display: grid;
  grid-template-columns: 112px 1fr minmax(150px,.42fr);
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.evidence-metric {
  font-size: clamp(34px,4vw,48px);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1;
  color: var(--blue-ink);
  font-variant-numeric: tabular-nums;
}
.evidence-metric span {
  color: var(--status);
  font-size: .42em;
  letter-spacing: -.01em;
}
.evidence-metric .metric-label {
  display: block;
  margin-top: 10px;
  font-size: .34em;
  line-height: 1;
}
.evidence-item h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -.01em;
  margin-bottom: 5px;
}
.evidence-item p {
  color: var(--muted);
  font-size: .9375rem;
  line-height: 1.55;
  max-width: 520px;
}
.evidence-tools {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: .71875rem;
  letter-spacing: .03em;
  line-height: 1.5;
}

.cases { padding: 40px 0 56px; }
.case-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 26px; }
.case {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
  transition: .2s;
  display: flex;
  flex-direction: column;
}
.case:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: #d4ddec; }
.case-featured { border-color: #cfd9ea; }
.case-featured .thumb-img { height: 230px; }
.case .thumb { padding: 18px 18px 0; background: linear-gradient(180deg,var(--tint),#fff); }
.case .c-body {
  padding: 22px 24px 26px;
  display: flex;
  flex: 1;
  flex-direction: column;
}
.case .tag { font-family: var(--font-mono); font-size: .6875rem; letter-spacing: .08em; text-transform: uppercase; color: var(--blue-ink); }
.case h3 { font-size: var(--text-title); font-weight: 600; line-height: 1.18; margin: 12px 0 10px; letter-spacing: -.01em; text-wrap: balance; }
.case p { color: var(--muted); font-size: .9375rem; line-height: 1.58; text-wrap: pretty; }
.case-proof { display: grid; gap: 0; margin-top: 18px; border-top: 1px solid var(--line-2); }
.case-proof div {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-2);
}
.case-proof dt {
  color: var(--blue-ink);
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .04em;
}
.case-proof dd {
  color: var(--ink-2);
  font-size: .875rem;
  line-height: 1.5;
  text-wrap: pretty;
}
.case .tools { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 0; }
.case .tools span { font-family: var(--font-mono); font-size: .6875rem; color: var(--muted); border: 1px solid var(--line); padding: 4px 9px; border-radius: 6px; }
.case .link { margin-top: auto; padding-top: 20px; color: var(--blue); font-weight: 500; font-size: .9375rem; display: inline-flex; align-items: center; gap: 8px; width: fit-content; }

/* ================================================================
   ABOUT PAGE
   ================================================================ */

.intro { padding: 52px 0 44px; border-bottom: 1px solid var(--line-2); }
.intro .wrap { display: grid; grid-template-columns: 1.5fr 1fr; gap: 64px; align-items: center; }
.intro h1 { font-size: clamp(32px,4.2vw,50px); line-height: 1.05; letter-spacing: -.025em; font-weight: 600; margin: 18px 0 0; text-wrap: balance; }
.intro h1 em { font-style: normal; color: var(--blue); }
.intro .lead { color: var(--muted); font-size: 18px; margin-top: 20px; max-width: 520px; text-wrap: pretty; }
.intro .cta { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.photo-wrap { display: flex; justify-content: center; }
.photo { width: 300px; height: 300px; border-radius: 50%; position: relative; }
.photo img { width: 100%; height: 100%; display: block; border-radius: 50%; box-shadow: var(--shadow-lg); }
.photo::after { content: ""; position: absolute; inset: -10px; border-radius: 50%; border: 1px solid var(--line); pointer-events: none; }
.photo .badge {
  position: absolute;
  bottom: 14px;
  right: -6px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 999px;
  padding: 9px 15px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
}

.facts { background: var(--tint); border-bottom: 1px solid var(--line-2); }
.facts .wrap { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; }
.fact { padding: 26px 28px 26px 0; }
.fact + .fact { padding-left: 28px; border-left: 1px solid var(--line); }
.fact .f-lab { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.fact .f-val { font-size: 17px; font-weight: 600; margin-top: 8px; letter-spacing: -.01em; }
.fact .f-val small { display: block; font-weight: 400; font-size: 13px; color: var(--muted); margin-top: 3px; }

.about-sec { padding: 52px 0; }
.grid-2 { display: grid; grid-template-columns: .7fr 1.3fr; gap: 48px; align-items: start; }
.profile p { font-size: 17.5px; line-height: 1.65; color: var(--ink-2); max-width: 760px; text-wrap: pretty; }
.profile p + p { margin-top: 18px; }
.profile .lead-strong { font-size: 20px; color: var(--ink); }

.exp { border-left: 2px solid var(--line); margin-left: 6px; }
.job { position: relative; padding: 0 0 40px 34px; }
.job:last-child { padding-bottom: 0; }
.job::before { content: ""; position: absolute; left: -8px; top: 5px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--blue); }
.job.alt::before { border-color: var(--status); }
.job .when { font-family: var(--font-mono); font-size: 12.5px; color: var(--blue-ink); letter-spacing: .02em; }
.job h3 { font-size: 21px; font-weight: 600; margin: 8px 0 3px; letter-spacing: -.01em; }
.job .org { color: var(--muted); font-size: 15px; margin-bottom: 14px; }
.job .org b { color: var(--ink); font-weight: 500; }
.job ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.job li { position: relative; padding-left: 20px; color: var(--ink-2); font-size: 16px; line-height: 1.55; max-width: 720px; }
.job li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 6px; height: 6px; border-radius: 2px; background: var(--blue); }
.job .metrics { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.job .metric { display: inline-flex; align-items: baseline; gap: 7px; background: var(--tint); border: 1px solid var(--line-2); border-radius: 8px; padding: 7px 12px; font-size: 13px; color: var(--muted); }
.job .metric b { font-family: var(--font-mono); font-size: 15px; color: var(--blue-ink); font-weight: 600; }

.comp { padding: 52px 0; background: var(--tint); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.comp-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 26px; }
.comp-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px 26px 28px; }
.comp-card h3 { font-size: 13px; font-family: var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--blue-ink); font-weight: 600; margin-bottom: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 9px; }
.tag { font-size: 13.5px; color: var(--ink-2); border: 1px solid var(--line); background: #fcfdff; border-radius: 8px; padding: 7px 12px; font-weight: 400; }

.twocol { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: start; }
.edu-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line-2); }
.edu-item:last-child { border-bottom: none; }
.edu-item .yr { font-family: var(--font-mono); font-size: 13px; color: var(--faint); flex: none; width: 54px; padding-top: 2px; }
.edu-item h4 { font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.edu-item p { color: var(--muted); font-size: 14.5px; margin-top: 3px; }
.cert-list { display: flex; flex-direction: column; gap: 12px; }
.cert { display: flex; align-items: flex-start; gap: 11px; font-size: 15px; color: var(--ink-2); line-height: 1.4; }
.cert .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--status); margin-top: 7px; flex: none; }
.lang-section { margin-top: 30px; }
.lang-section h3 { font-size: 13px; font-family: var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-bottom: 14px; }
.lang-row { display: flex; justify-content: space-between; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--line-2); }
.lang-row b { font-weight: 500; font-size: 15px; }
.lang-row span { font-size: 13px; color: var(--muted); font-family: var(--font-mono); }

/* ================================================================
   CASE STUDY PAGES
   ================================================================ */

.cs-hero { padding: 46px 0 56px; border-bottom: 1px solid var(--line-2); }
.backlink { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 12.5px; color: var(--muted); margin-bottom: 26px; }
.backlink:hover { color: var(--blue); }
.cs-hero h1 { font-size: clamp(34px,5vw,58px); line-height: 1.03; letter-spacing: -.03em; font-weight: 600; margin: 16px 0 0; max-width: 16ch; text-wrap: balance; }
.cs-hero .lead { color: var(--muted); font-size: 18.5px; margin-top: 20px; max-width: 680px; text-wrap: pretty; }
.ttags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.ttag { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .04em; color: var(--ink-2); border: 1px solid var(--line); background: #fcfdff; border-radius: 7px; padding: 6px 11px; }
.cs-figure { margin: 0; }
.cs-figure figcaption { font-family: var(--font-mono); font-size: 12px; color: var(--faint); margin-top: 12px; text-align: center; }

.lead-strong { font-size: 19px; line-height: 1.6; color: var(--ink); }
.body-p { font-size: 17px; line-height: 1.65; color: var(--ink-2); max-width: 760px; text-wrap: pretty; }
.body-p + .body-p { margin-top: 16px; }

.qcards { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.qcard { border: 1px solid var(--line); border-radius: var(--r); padding: 24px 24px 26px; background: #fff; display: flex; gap: 18px; align-items: flex-start; transition: .18s; }
.qcard:hover { box-shadow: var(--shadow); border-color: #d4ddec; }
.qcard .qn { font-family: var(--font-mono); font-size: 14px; color: var(--blue-ink); font-weight: 600; flex: none; width: 26px; }
.qcard p { font-size: 16.5px; color: var(--ink-2); line-height: 1.45; }

.checklist { list-style: none; display: flex; flex-direction: column; gap: 13px; }
.checklist li { position: relative; padding-left: 30px; font-size: 16px; color: var(--ink-2); line-height: 1.5; max-width: 720px; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--status-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 6.2l2.3 2.3 4.7-5' fill='none' stroke='%230f766e' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.built-grid { display: grid; grid-template-columns: 1.25fr .9fr; gap: 44px; align-items: center; }

.flow-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 38px 0 18px;
}

.flow { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.fcard { border: 1px solid var(--line); border-radius: var(--r); padding: 22px 20px 24px; background: #fff; position: relative; overflow: hidden; }
.fcard .tick { position: absolute; top: 0; left: 0; height: 3px; width: 100%; background: linear-gradient(90deg,var(--blue),var(--status)); opacity: 0; transition: .2s; }
.fcard:hover .tick { opacity: 1; }
.fcard .fn { font-family: var(--font-mono); font-size: 12px; color: var(--blue-ink); font-weight: 600; }
.fcard h4 { font-size: 16.5px; font-weight: 600; margin: 12px 0 8px; letter-spacing: -.01em; }
.fcard p { font-size: 14.5px; color: var(--muted); line-height: 1.5; }

.findings { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.finding { display: grid; grid-template-columns: 140px 1fr; gap: 28px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line-2); }
.finding .big { font-size: clamp(30px,4vw,44px); font-weight: 600; letter-spacing: -.03em; color: var(--blue-ink); line-height: 1; }
.finding .big .u { color: var(--status); font-size: .6em; }
.finding p { font-size: 16.5px; color: var(--ink-2); line-height: 1.5; }

.impact-list { list-style: none; display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.impact-list li { border: 1px solid var(--line); border-radius: var(--r); padding: 24px; background: var(--tint); font-size: 15.5px; color: var(--ink-2); line-height: 1.5; }
.impact-list li .ic { display: block; width: 30px; height: 30px; border-radius: 8px; background: #fff; border: 1px solid var(--line); margin-bottom: 14px; position: relative; }
.impact-list li .ic::after { content: ""; position: absolute; inset: 9px; border-radius: 3px; background: var(--blue); }
.impact-list li:nth-child(2) .ic::after { background: var(--status); }

.role { display: flex; flex-wrap: wrap; gap: 10px; }
.role span { font-size: 14.5px; color: var(--ink-2); border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 9px 16px; font-weight: 500; }

.casenav { background: var(--tint); border-top: 1px solid var(--line-2); }
.casenav a { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 40px 0; }
.casenav .nlab { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-ink); }
.casenav .ntitle { font-size: clamp(22px,2.6vw,30px); font-weight: 600; letter-spacing: -.02em; margin-top: 8px; }
.casenav .arrow { font-size: 28px; color: var(--blue); flex: none; }

/* ================================================================
   FOOTER
   ================================================================ */

.foot { background: var(--ink); color: #cdd6e4; padding: 56px 0 36px; }
.foot .eyebrow { color: var(--status); }
.foot h2 { color: #fff; font-size: clamp(28px,3.6vw,42px); font-weight: 600; letter-spacing: -.02em; max-width: 560px; line-height: 1.1; }
.foot p { margin-top: 16px; max-width: 460px; color: #8ea0bd; }
.foot .cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.foot .btn-primary { background: var(--blue); }
.foot .btn-ghost { background: transparent; color: #cdd6e4; border-color: rgba(255,255,255,.3); }
.foot .btn-ghost:hover { border-color: #fff; color: #fff; background: transparent; }
.foot .rule { height: 1px; background: rgba(255,255,255,.1); margin: 40px 0 24px; }
.foot .end { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #7385a3; font-family: var(--font-mono); }

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 900px) {
  /* nav — show hamburger, hide links by default */
  .nav-toggle { display: flex; }
  .navlinks {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 32px 16px;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line-2);
    box-shadow: 0 8px 24px rgba(15,27,45,.1);
  }
  .navlinks.open { display: flex; }
  .navlinks a { font-size: 15px; padding: 12px 0; border-bottom: 1px solid var(--line-2); color: var(--ink); }
  .navlinks a:last-of-type { border-bottom: none; color: var(--blue); font-weight: 500; }

  /* homepage */
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .evidence-wrap { grid-template-columns: 1fr; gap: 30px; }
  .evidence-head p { max-width: 620px; }
  .evidence-item { grid-template-columns: 96px 1fr; }
  .evidence-tools { grid-column: 2; }
  .case-grid { grid-template-columns: 1fr; }

  /* about */
  .intro .wrap { grid-template-columns: 1fr; gap: 40px; }
  .photo-wrap { order: -1; justify-content: flex-start; }
  .facts .wrap { grid-template-columns: 1fr 1fr; }
  .fact:nth-child(3) { border-left: none; padding-left: 0; }
  .grid-2, .comp-grid, .twocol { grid-template-columns: 1fr; gap: 28px; }

  /* case study */
  .split, .built-grid { grid-template-columns: 1fr; gap: 28px; }
  .qcards, .impact-list { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .finding { grid-template-columns: 100px 1fr; gap: 18px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .navlinks { padding-left: 20px; padding-right: 20px; }
  .hero .sep { display: none; }
  .evidence { padding: 38px 0; }
  .evidence-item { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
  .evidence-tools { grid-column: auto; }
  .case-proof div { grid-template-columns: 1fr; gap: 3px; }
  .flow { grid-template-columns: 1fr; }
  .facts .wrap { grid-template-columns: 1fr; }
  .fact + .fact { border-left: none; padding-left: 0; border-top: 1px solid var(--line); padding-top: 26px; margin-top: 8px; }
}