/* ============================================================
   AtlasML — section styles
   ============================================================ */

/* ----- Header ----- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
  padding-inline: var(--pad-x);
  max-width: 1480px; margin-inline: auto;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--f-serif); font-size: 28px; letter-spacing: -0.02em;
  line-height: 1;
}
.brand__mark {
  width: 32px; height: 32px;
  display: inline-grid; place-items: center;
  background: var(--ink); color: var(--bg);
  border-radius: 50%;
  font-family: var(--f-serif); font-style: italic; font-size: 18px;
}
.brand__mark--accent { background: var(--accent); color: var(--accent-ink); }
.brand em { font-style: italic; color: var(--ink-2); }
.brand__txt {
  display: inline;
}
.brand__tagline {
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-top: 1px;
}

/* Header phone (desktop) */
.header-phone {
  display: none;
  align-items: center; gap: 8px;
  font-family: var(--f-mono);
  font-size: var(--t-mono-sm);
  letter-spacing: 0.06em;
  color: var(--ink-1);
  padding: 8px 12px;
  border-radius: var(--rad-pill);
  transition: color .25s var(--ease), background .25s var(--ease);
}
.header-phone:hover { color: var(--accent); background: color-mix(in oklab, var(--accent) 10%, transparent); }
.header-phone svg { width: 14px; height: 14px; }
@media (min-width: 768px) {
  .header-phone { display: inline-flex; }
}

.nav { display: none; }
@media (min-width: 1024px) {
  .nav { display: flex; align-items: center; gap: 36px; }
  .nav a {
    font-family: var(--f-mono); font-size: var(--t-mono-sm);
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--ink-1); position: relative; padding: 6px 0;
  }
  .nav a:hover { color: var(--ink); }
  .nav a::after {
    content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
    background: var(--accent); transition: right .3s var(--ease);
  }
  .nav a:hover::after { right: 0; }
}
.header-actions { display: flex; align-items: center; gap: 10px; }


/* Icon button (used by menu open/close) */
.icon-btn,
.menu-btn,
.menu-close {
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  background: transparent; color: var(--ink);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}
.icon-btn:hover,
.menu-btn:hover,
.menu-close:hover { background: var(--bg-1); border-color: var(--ink-2); }
.icon-btn svg,
.menu-btn svg,
.menu-close svg { width: 16px; height: 16px; }

.menu-btn { display: inline-flex; }
@media (min-width: 1024px) { .menu-btn { display: none; } }

/* Mobile drawer */
.drawer {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 60;
  display: flex; flex-direction: column;
  padding: 24px var(--pad-x);
  transform: translateY(-100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform .45s cubic-bezier(.2,.7,.2,1), visibility 0s .45s;
}
.drawer.is-open {
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
  transition: transform .45s cubic-bezier(.2,.7,.2,1), visibility 0s 0s;
}
.drawer__top { display: flex; justify-content: space-between; align-items: center; height: 48px; margin-bottom: 32px; }
.drawer nav { display: flex; flex-direction: column; gap: 16px; }
.drawer nav a {
  font-family: var(--f-serif); font-size: 36px;
  letter-spacing: -0.02em; color: var(--ink);
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.drawer__footer {
  margin-top: auto; padding-top: 32px;
  display: flex; flex-direction: column; gap: 0;
  border-top: 1px solid var(--line-2);
}
.drawer__footer a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: color .25s var(--ease);
}
.drawer__footer a:last-child { border-bottom: 0; }
.drawer__footer a:hover { color: var(--accent); }
.drawer__footer .k {
  font-family: var(--f-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.drawer__footer .v {
  font-family: var(--f-sans);
  font-size: 18px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.drawer__footer a:hover .v { color: var(--accent); }

/* ----- Hero ----- */
.hero {
  padding-top: clamp(48px, 7vw, 96px);
  padding-bottom: clamp(80px, 10vw, 140px);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: -10% -10% auto auto;
  width: 80vw; height: 80vw; max-width: 900px; max-height: 900px;
  background: radial-gradient(closest-side, color-mix(in oklab, var(--accent) 18%, transparent), transparent 70%);
  pointer-events: none;
  filter: blur(10px);
  z-index: 0;
}
.hero__inner { position: relative; z-index: 1; }
.hero__top {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 24px; flex-wrap: wrap;
  margin-bottom: clamp(40px, 5vw, 72px);
}
.hero__status {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-mono); font-size: var(--t-mono-sm);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-1);
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 70%, transparent);
  animation: pulse 1.8s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 70%, transparent); }
  70%  { box-shadow: 0 0 0 12px color-mix(in oklab, var(--accent) 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 0%, transparent); }
}
.hero__meta {
  font-family: var(--f-mono); font-size: var(--t-mono-sm);
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2);
}

.hero h1 {
  font-size: var(--t-d-lg);
  letter-spacing: -0.035em;
  line-height: 0.92;
}
.hero h1 .underline {
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-size: 100% 12px;
  background-position: 0 88%;
  padding: 0 4px;
}
.hero h1 em { color: var(--ink-2); font-style: italic; }

.hero__bottom {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: clamp(40px, 5vw, 80px);
}
@media (min-width: 900px) {
  .hero__bottom { grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: end; }
}
.hero__lede {
  font-size: var(--t-lead);
  line-height: 1.4;
  color: var(--ink-1);
  max-width: 48ch;
}
.hero__lede strong { color: var(--ink); font-weight: 500; }
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.trust {
  display: grid; grid-template-columns: 1fr; gap: 16px;
  padding-left: 24px;
  border-left: 1px solid var(--line-2);
}
@media (min-width: 600px) {
  .trust { grid-template-columns: repeat(3, 1fr); gap: 12px; padding-left: 0; border-left: 0; }
}
.trust__item { padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--rad); background: color-mix(in oklab, var(--ink) 3%, transparent); }
.trust__num { font-family: var(--f-serif); font-size: 40px; line-height: 1; letter-spacing: -0.02em; color: var(--ink); }
.trust__label { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); margin-top: 8px; }

/* Marquee strip */
.marquee {
  border-block: 1px solid var(--line);
  padding-block: 18px;
  overflow: hidden;
  background: var(--bg);
}
.marquee__track {
  display: flex; gap: 56px;
  width: max-content;
  animation: marquee 38s linear infinite;
  font-family: var(--f-serif);
  font-size: 28px;
  letter-spacing: -0.01em;
  color: var(--ink-1);
}
.marquee__track span { display: inline-flex; align-items: center; gap: 56px; }
.marquee__track i { font-style: italic; color: var(--accent); }
.marquee__track::before, .marquee__track::after { content: "✦"; color: var(--ink-3); }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ----- Engagement Models ----- */
.engage__grid {
  display: grid; gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .engage__grid { grid-template-columns: repeat(3, 1fr); }
}
.engage__card {
  position: relative;
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  padding: 32px;
  background: var(--bg);
  transition: background .4s var(--ease), transform .4s var(--ease), border-color .4s var(--ease);
  display: flex; flex-direction: column; gap: 16px;
  min-height: 360px;
}
.engage__card:hover { transform: translateY(-4px); border-color: var(--ink-2); }
.engage__card--featured {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.engage__card--featured .engage__num,
.engage__card--featured .engage__title,
.engage__card--featured .engage__body { color: var(--accent-ink); }
.engage__card--featured .engage__tag {
  background: var(--accent-ink); color: var(--accent);
}
.engage__num { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.12em; color: var(--ink-2); }
.engage__tag {
  position: absolute; top: 32px; right: 32px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 6px 10px; border-radius: var(--rad-pill);
  background: var(--ink); color: var(--bg);
}
.engage__title { font-family: var(--f-serif); font-size: 44px; line-height: 1; letter-spacing: -0.02em; margin-top: 8px; }
.engage__body { color: var(--ink-1); font-size: var(--t-body); line-height: 1.5; }
.engage__list { margin-top: auto; display: flex; flex-direction: column; gap: 6px; }
.engage__list li {
  list-style: none;
  font-family: var(--f-mono); font-size: var(--t-mono-sm);
  letter-spacing: 0.04em; color: inherit; opacity: .8;
  display: flex; gap: 10px; align-items: center;
}
.engage__list li::before { content: "→"; color: var(--accent); font-weight: 700; }
.engage__card--featured .engage__list li::before { color: var(--accent-ink); }
.engage__list { padding: 0; }

/* ----- Services Grid ----- */
.services__list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-2);
}
@media (min-width: 720px)  { .services__list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .services__list { grid-template-columns: repeat(2, 1fr); } }

.service {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: clamp(24px, 3vw, 36px) clamp(16px, 2vw, 28px);
  border-bottom: 1px solid var(--line-2);
  cursor: pointer;
  transition: background .3s var(--ease), padding .3s var(--ease);
}
.service:nth-child(odd)  { border-right: 1px solid var(--line-2); }
@media (max-width: 719px) {
  .service:nth-child(odd) { border-right: 0; }
}
.service:hover { background: var(--bg-1); }
.service:hover .service__title { color: var(--accent); }

.service__num { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.04em; color: var(--ink-3); }
.service__title {
  font-family: var(--f-serif);
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  transition: color .3s var(--ease);
}
.service__title em { color: var(--ink-2); }
.service__arrow {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  transition: background .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease), transform .3s var(--ease);
}
.service:hover .service__arrow { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); transform: rotate(-45deg); }
.service__desc {
  grid-column: 2 / -1;
  font-size: var(--t-body-sm);
  color: var(--ink-2);
  line-height: 1.5;
  margin-top: 4px;
  max-width: 60ch;
}

/* ----- Why ----- */
.why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line-2);
}
@media (min-width: 720px)  { .why__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .why__grid { grid-template-columns: repeat(4, 1fr); } }
.why__cell {
  padding: 32px;
  border-bottom: 1px solid var(--line-2);
  border-right: 1px solid var(--line-2);
  min-height: 280px;
  display: flex; flex-direction: column; gap: 16px;
}
.why__cell:last-child { border-right: 0; }
@media (max-width: 1099px) {
  .why__cell:nth-child(2n) { border-right: 0; }
}
@media (max-width: 719px) {
  .why__cell { border-right: 0; }
}
.why__num {
  font-family: var(--f-serif);
  font-size: 64px; line-height: 1;
  color: var(--accent);
}
.why__title {
  font-family: var(--f-serif);
  font-size: 28px; line-height: 1.05; letter-spacing: -0.01em;
}
.why__body { color: var(--ink-1); font-size: var(--t-body-sm); line-height: 1.55; }

/* ----- Process ----- */
.process__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  counter-reset: step;
}
.process__step {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding-block: 36px;
  border-top: 1px solid var(--line-2);
  align-items: start;
}
@media (min-width: 800px) {
  .process__step { grid-template-columns: 180px 0.6fr 1fr; gap: 48px; padding-block: 48px; }
}
.process__step:last-child { border-bottom: 1px solid var(--line-2); }
.process__index {
  font-family: var(--f-serif);
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1;
  letter-spacing: -0.04em;
}
.process__index em { color: var(--accent); font-style: normal; }
.process__name {
  font-family: var(--f-serif);
  font-size: clamp(24px, 2.4vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.process__desc { color: var(--ink-1); font-size: var(--t-body); line-height: 1.6; max-width: 60ch; }

/* ----- Tech stack ----- */
.tech__groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 800px) {
  .tech__groups { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1100px) {
  .tech__groups { grid-template-columns: repeat(4, 1fr); }
}
.tech__group {
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  padding: 24px;
  background: color-mix(in oklab, var(--ink) 2%, transparent);
  display: flex; flex-direction: column; gap: 16px;
}
.tech__group h3 {
  font-family: var(--f-serif);
  font-size: 22px;
  letter-spacing: -0.01em;
}
.tech__chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--rad-pill);
  font-family: var(--f-mono); font-size: var(--t-mono-sm);
  letter-spacing: 0.04em; color: var(--ink-1);
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.chip:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* ----- Case Studies ----- */
.cases__grid {
  display: grid; gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) {
  .cases__grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 1fr; }
}
@media (min-width: 1200px) {
  .cases__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .case--feat { grid-row: 1 / span 2; }
}
.case {
  position: relative;
  border: 1px solid var(--line-2);
  padding: 28px;
  display: flex; flex-direction: column; gap: 16px;
  min-height: 320px;
  overflow: hidden;
  transition: transform .4s var(--ease), background .4s var(--ease);
  background: var(--bg);
}
.case--feat { min-height: 520px; background: var(--bg-1); }
.case:hover { transform: translateY(-4px); }
.case__tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-2);
}
.case__tag::before { content: ""; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.case__title {
  font-family: var(--f-serif);
  font-size: clamp(22px, 2.2vw, 32px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.case--feat .case__title { font-size: clamp(32px, 4vw, 56px); line-height: 0.98; max-width: 14ch; }
.case__desc { color: var(--ink-1); font-size: var(--t-body-sm); line-height: 1.55; }
.case__metrics {
  margin-top: auto;
  display: flex; gap: 32px; padding-top: 16px;
  border-top: 1px solid var(--line);
}
.case__metric { display: flex; flex-direction: column; gap: 4px; }
.case__metric .v { font-family: var(--f-serif); font-size: 28px; line-height: 1; letter-spacing: -0.02em; }
.case__metric .v em { color: var(--accent); }
.case__metric .k { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); }
.case__viz {
  position: absolute; top: 28px; right: 28px; opacity: .85;
}
.case--feat .case__viz { position: relative; top: 0; right: 0; margin-top: auto; }

/* ----- Industries ----- */
.industries__grid {
  display: grid; gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px)  { .industries__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .industries__grid { grid-template-columns: repeat(5, 1fr); } }
.industry {
  position: relative;
  border: 1px solid var(--line-2);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 12px;
  min-height: 260px;
  cursor: pointer;
  transition: background .4s var(--ease), transform .4s var(--ease), color .4s var(--ease);
  overflow: hidden;
}
.industry:hover { background: var(--accent); color: var(--accent-ink); transform: translateY(-4px); }
.industry:hover .industry__num,
.industry:hover .industry__sub { color: var(--accent-ink); }
.industry__num { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.04em; color: var(--ink-3); }
.industry__name { font-family: var(--f-serif); font-size: clamp(28px, 2.4vw, 36px); line-height: 1.05; letter-spacing: -0.01em; margin-top: auto; }
.industry__sub { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.04em; color: var(--ink-2); }
.industry__icon { width: 32px; height: 32px; color: var(--ink-2); transition: color .3s var(--ease); }
.industry:hover .industry__icon { color: var(--accent-ink); }

/* ----- Stats ----- */
.stats {
  background: var(--ink);
  color: var(--bg);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.stats__grid {
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 700px)  { .stats__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .stats__grid { grid-template-columns: repeat(4, 1fr); } }
.stats__cell {
  padding: 40px 32px;
  border-right: 1px solid color-mix(in oklab, var(--bg) 18%, transparent);
  display: flex; flex-direction: column; gap: 12px;
  min-height: 220px; justify-content: space-between;
}
.stats__cell:last-child { border-right: 0; }
@media (max-width: 999px) {
  .stats__cell:nth-child(2n) { border-right: 0; }
}
@media (max-width: 699px) {
  .stats__cell { border-right: 0; border-bottom: 1px solid color-mix(in oklab, var(--bg) 18%, transparent); }
}
.stats__num {
  font-family: var(--f-serif);
  font-size: clamp(72px, 9vw, 144px);
  line-height: 0.9; letter-spacing: -0.04em;
  display: inline-flex; align-items: baseline; gap: 2px;
}
.stats__num em { color: var(--accent); font-style: normal; font-size: 0.5em; }
.stats__lbl { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.12em; text-transform: uppercase; color: color-mix(in oklab, var(--bg) 70%, transparent); }

/* ----- Testimonials ----- */
.tmls__grid {
  display: grid; gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 800px)  { .tmls__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1200px) { .tmls__grid { grid-template-columns: repeat(3, 1fr); } }
.tml {
  border: 1px solid var(--line-2);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
  background: var(--bg);
  transition: background .3s var(--ease);
}
.tml:hover { background: var(--bg-1); }
.tml__quote {
  font-family: var(--f-serif);
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.005em;
}
.tml__quote::before { content: "“"; color: var(--accent); font-size: 56px; line-height: 0.6; vertical-align: -0.2em; margin-right: 6px; }
.tml__meta { margin-top: auto; display: flex; justify-content: space-between; align-items: end; gap: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.tml__who { display: flex; flex-direction: column; gap: 4px; }
.tml__name { font-family: var(--f-sans); font-size: var(--t-body); font-weight: 500; }
.tml__role { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.04em; color: var(--ink-2); }
.tml__result { text-align: right; }
.tml__result .v { font-family: var(--f-serif); font-size: 24px; color: var(--accent); }
.tml__result .k { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); }

/* ----- Blog ----- */
.blog__grid {
  display: grid; gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 800px)  { .blog__grid { grid-template-columns: repeat(3, 1fr); } }
.post {
  border: 1px solid var(--line-2);
  padding: 28px;
  display: flex; flex-direction: column; gap: 20px;
  min-height: 320px;
  cursor: pointer;
  transition: background .3s var(--ease);
}
.post:hover { background: var(--bg-1); }
.post:hover .post__title { color: var(--accent); }
.post__cat { font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.post__title {
  font-family: var(--f-serif);
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.1; letter-spacing: -0.01em;
  transition: color .3s var(--ease);
}
.post__excerpt { font-size: var(--t-body-sm); color: var(--ink-1); line-height: 1.5; }
.post__meta { margin-top: auto; display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid var(--line); font-family: var(--f-mono); font-size: var(--t-mono-sm); color: var(--ink-2); letter-spacing: 0.04em; }

/* ----- FAQ ----- */
.faq__list {
  border-top: 1px solid var(--line-2);
  max-width: 1100px; margin: 0 auto;
}
.faq__item { border-bottom: 1px solid var(--line-2); }
.faq__q {
  width: 100%;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 28px 0;
  text-align: left;
  font-family: var(--f-serif);
  font-size: clamp(22px, 2.2vw, 32px);
  line-height: 1.1; letter-spacing: -0.01em;
  cursor: pointer;
  transition: color .3s var(--ease);
}
.faq__q:hover { color: var(--accent); }
.faq__toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  font-family: var(--f-mono); font-size: 18px;
  flex-shrink: 0;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.faq__item[open] .faq__toggle { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); transform: rotate(45deg); }
.faq__a {
  padding-bottom: 28px;
  color: var(--ink-1); font-size: var(--t-body-lg);
  line-height: 1.55; max-width: 80ch;
}
/* hide default <details> arrow */
.faq__item > summary::-webkit-details-marker { display: none; }
.faq__item > summary { list-style: none; }

/* ----- Contact ----- */
.contact { background: var(--bg-1); }
.contact__inner {
  display: grid; gap: 48px;
  grid-template-columns: 1fr;
}
@media (min-width: 1000px) {
  .contact__inner { grid-template-columns: 1fr 1fr; gap: 80px; }
}
.contact__display {
  font-family: var(--f-serif);
  font-size: clamp(56px, 8vw, 128px);
  line-height: 0.92; letter-spacing: -0.035em;
}
.contact__display em { color: var(--ink-2); }
.contact__channels { margin-top: 40px; display: flex; flex-direction: column; gap: 20px; }
.contact__row {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line-2);
  font-family: var(--f-mono); font-size: var(--t-mono-sm);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-1);
  transition: color .3s var(--ease);
}
.contact__row:last-child { border-bottom: 1px solid var(--line-2); }
.contact__row:hover { color: var(--accent); }
.contact__row .label { color: var(--ink-3); min-width: 60px; }
.contact__row .v { flex: 1; }
.contact__row .arrow { width: 14px; height: 14px; transition: transform .3s var(--ease); }
.contact__row:hover .arrow { transform: translateX(4px) translateY(-4px) rotate(-45deg); color: var(--accent); }

.form {
  background: var(--bg);
  padding: 40px;
  border: 1px solid var(--line-2);
  display: flex; flex-direction: column; gap: 18px;
}
.form h3 {
  font-family: var(--f-serif); font-size: 32px; line-height: 1.05; letter-spacing: -0.01em;
}
.form__sub { color: var(--ink-2); font-size: var(--t-body-sm); }
.form__row { display: flex; flex-direction: column; gap: 6px; }
.form__row label { font-family: var(--f-mono); font-size: var(--t-mono-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); }
.form__row input,
.form__row textarea,
.form__row select {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-2);
  padding: 10px 0;
  font-family: var(--f-sans); font-size: var(--t-body);
  color: var(--ink);
  outline: none;
  transition: border-color .3s var(--ease);
}
.form__row input:focus,
.form__row textarea:focus,
.form__row select:focus { border-color: var(--accent); }
.form__row textarea { resize: vertical; min-height: 80px; }
.form__row--inline { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__captcha {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--f-mono); font-size: var(--t-body-sm); color: var(--ink-2);
}
.form__captcha input { width: 80px; }
.form__submit { margin-top: 8px; align-self: start; }
.form__status { font-family: var(--f-mono); font-size: var(--t-mono-sm); color: var(--accent); min-height: 1em; }

/* ----- Footer ----- */
.footer {
  padding-block: 64px 32px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.footer__top {
  display: grid; gap: 48px;
  grid-template-columns: 1fr;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 800px) {
  .footer__top { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
.footer__brand h3 {
  font-family: var(--f-serif);
  font-size: 48px; line-height: 0.95; letter-spacing: -0.02em;
  max-width: 12ch;
  margin-bottom: 16px;
}
.footer__brand p { color: var(--ink-2); font-size: var(--t-body-sm); max-width: 36ch; }
.footer__col h4 {
  font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 20px;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.footer__col a { font-size: var(--t-body-sm); color: var(--ink-1); transition: color .2s var(--ease); }
.footer__col a:hover { color: var(--accent); }
.footer__bottom {
  padding-top: 32px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  font-family: var(--f-mono); font-size: var(--t-mono-sm); letter-spacing: 0.04em; color: var(--ink-2);
}
.footer__socials { display: flex; gap: 12px; }
.footer__socials a {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.footer__socials a:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.footer__socials svg { width: 14px; height: 14px; }

/* ----- WhatsApp Floating ----- */
.whatsapp-float {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 40;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: grid; place-items: center;
  color: #fff;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
  transition: transform .3s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 28px; height: 28px; }
.whatsapp-float::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 2px solid #25D366;
  animation: ring 2s ease-out infinite;
}
@keyframes ring {
  0%   { transform: scale(1); opacity: .8; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* ============================================================
   MOBILE RESPONSIVE — ≤ 767px
   ============================================================ */
@media (max-width: 767px) {

  /* Header */
  .site-header__inner { height: 60px; }
  .brand { font-size: 20px; gap: 8px; }
  [data-comment-anchor="cta-header"] { display: none; }

  /* Hero */
  .hero { padding-top: 32px; padding-bottom: 56px; }
  .hero h1 {
    font-size: clamp(44px, 13vw, 72px);
    letter-spacing: -0.025em;
    line-height: 0.94;
  }
  .hero__top { margin-bottom: 28px; gap: 12px; }
  .hero__lede { font-size: var(--t-body); }
  .hero__bottom { margin-top: 28px; gap: 28px; }
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .trust { grid-template-columns: 1fr; padding-left: 0; border-left: 0; }

  /* Marquee */
  .marquee__track { font-size: 20px; gap: 32px; }
  .marquee__track span { gap: 32px; }

  /* Engagement cards */
  .engage__card { min-height: auto; padding: 24px 20px; }
  .engage__title { font-size: 32px; }

  /* Services */
  .service {
    grid-template-columns: 40px 1fr auto;
    gap: 12px 10px;
    padding: 20px 0;
  }

  /* Why */
  .why__cell { min-height: auto; padding: 24px 20px; }
  .why__num { font-size: 48px; }

  /* Process */
  .process__step {
    grid-template-columns: 64px 1fr;
    gap: 12px 16px;
    padding-block: 24px;
  }
  .process__index { font-size: clamp(36px, 10vw, 64px); }
  .process__desc { grid-column: 2 / -1; }

  /* Tech stack */
  .tech__group { padding: 18px; }

  /* Case studies */
  .case { min-height: auto; padding: 20px; }
  .case--feat { min-height: auto; }
  .case__metrics { gap: 20px; flex-wrap: wrap; }

  /* Industries */
  .industry { min-height: auto; padding: 20px 18px; }

  /* Stats */
  .stats__cell { min-height: auto; padding: 28px 20px; }
  .stats__num { font-size: clamp(56px, 14vw, 96px); }

  /* Testimonials */
  .tml { padding: 24px 20px; }
  .tml__quote { font-size: 18px; }
  .tml__meta { flex-direction: column; align-items: flex-start; gap: 12px; }

  /* Blog posts */
  .post { min-height: auto; padding: 20px; }

  /* FAQ */
  .faq__q { font-size: clamp(18px, 4.5vw, 26px); padding: 20px 0; }
  .faq__toggle { width: 32px; height: 32px; font-size: 15px; }

  /* Contact */
  .contact__display { font-size: clamp(44px, 12vw, 80px); }
  .form { padding: 24px 18px; }
  .form__row--inline { grid-template-columns: 1fr; }
  .form h3 { font-size: 24px; }

  /* Footer */
  .footer__brand h3 { font-size: 36px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* ============================================================
   SMALL MOBILE — ≤ 479px
   ============================================================ */
@media (max-width: 479px) {
  .site-header__inner { height: 56px; }
  .brand { font-size: 18px; }
  .hero h1 { font-size: clamp(38px, 12vw, 60px); }
  .engage__title { font-size: 28px; }
  .stats__num { font-size: clamp(48px, 13vw, 80px); }
  .why__num { font-size: 40px; }
  .contact__display { font-size: clamp(36px, 11vw, 64px); }
  .footer__brand h3 { font-size: 28px; }
  .process__step { grid-template-columns: 1fr; }
  .process__index { font-size: clamp(32px, 10vw, 56px); margin-bottom: -4px; }
  .process__desc { grid-column: 1 / -1; }
}