/* =========================================================
   Global Marketing — Landing Page Styles
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:        #f8f8f6;
  --clr-surface:   #ffffff;
  --clr-dark:      #0d1117;
  --clr-dark-80:   #1e2430;
  --clr-mid:       #4a5568;
  --clr-muted:     #8896a7;
  --clr-border:    #e4e7ec;

  --clr-primary:   #1a56db;
  --clr-primary-h: #1447c0;
  --clr-grad-a:    #1a56db;
  --clr-grad-b:    #0ea5e9;

  --clr-a1:        #1a56db;
  --clr-a2:        #0891b2;
  --clr-a3:        #7c3aed;
  --clr-a4:        #059669;
  --clr-a5:        #d97706;

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  24px;
  --radius-xl:  40px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.1), 0 4px 16px rgba(0,0,0,.06);

  --font: 'Inter', system-ui, sans-serif;
  --trans: .22s cubic-bezier(.4,0,.2,1);

  --max-w: 1200px;
  --gutter: clamp(1.25rem, 5vw, 2rem);
}

/* ── Dark theme variables ──────────────────────────────── */

[data-theme="dark"] {
  --clr-bg:        #0d1117;
  --clr-surface:   #161b22;
  --clr-dark:      #e6edf3;
  --clr-mid:       #8b949e;
  --clr-muted:     #6e7681;
  --clr-border:    #30363d;

  --clr-primary:   #4d86f7;
  --clr-primary-h: #6b9df8;
  --clr-grad-a:    #4d86f7;
  --clr-grad-b:    #38bdf8;

  --clr-a1:        #4d86f7;
  --clr-a2:        #22d3ee;
  --clr-a3:        #a78bfa;
  --clr-a4:        #34d399;
  --clr-a5:        #fbbf24;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.4),  0 1px 2px rgba(0,0,0,.3);
  --shadow-md:  0 4px 16px rgba(0,0,0,.5), 0 2px 6px rgba(0,0,0,.3);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.7), 0 4px 16px rgba(0,0,0,.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --clr-bg:        #0d1117;
    --clr-surface:   #161b22;
    --clr-dark:      #e6edf3;
    --clr-mid:       #8b949e;
    --clr-muted:     #6e7681;
    --clr-border:    #30363d;

    --clr-primary:   #4d86f7;
    --clr-primary-h: #6b9df8;
    --clr-grad-a:    #4d86f7;
    --clr-grad-b:    #38bdf8;

    --clr-a1:        #4d86f7;
    --clr-a2:        #22d3ee;
    --clr-a3:        #a78bfa;
    --clr-a4:        #34d399;
    --clr-a5:        #fbbf24;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.4),  0 1px 2px rgba(0,0,0,.3);
    --shadow-md:  0 4px 16px rgba(0,0,0,.5), 0 2px 6px rgba(0,0,0,.3);
    --shadow-lg:  0 16px 48px rgba(0,0,0,.7), 0 4px 16px rgba(0,0,0,.4);
  }
}

/* ── Theme transition ──────────────────────────────────── */

html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition: background-color 280ms ease, border-color 280ms ease,
              color 180ms ease, box-shadow 280ms ease !important;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

/* ── Utilities ─────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.gradient-text {
  background: linear-gradient(135deg, var(--clr-grad-a), var(--clr-grad-b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: 100px;
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--trans);
  white-space: nowrap;
}
.btn--primary {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(26,86,219,.35);
}
.btn--primary:hover {
  background: var(--clr-primary-h);
  box-shadow: 0 6px 24px rgba(26,86,219,.35);
  transform: translateY(-1px);
}
.btn--ghost {
  background: transparent;
  color: var(--clr-dark);
  border: 1.5px solid var(--clr-border);
}
.btn--ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(26,86,219,.04);
}
[data-theme="dark"] .btn--ghost { border-color: rgba(255,255,255,.2); }
[data-theme="dark"] .btn--ghost:hover { background: rgba(77,134,247,.08); }
.btn--sm { padding: .5rem 1.1rem; font-size: .875rem; }
.btn--full { width: 100%; justify-content: center; }

.section-label {
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: .75rem;
}
.section-label--light { color: rgba(255,255,255,.7); }

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.18;
  color: var(--clr-dark);
  letter-spacing: -.02em;
}
.section-title--light { color: #fff; }

.section-header { text-align: center; margin-bottom: clamp(2.5rem, 6vw, 4rem); }
.section-header--light { margin-bottom: 3rem; }

/* ── Nav ───────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(248,248,246,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: var(--trans);
}
.nav.scrolled {
  background: rgba(255,255,255,.95);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .nav {
  background: rgba(13,17,23,.85);
}
[data-theme="dark"] .nav.scrolled {
  background: rgba(22,27,34,.97);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav { background: rgba(13,17,23,.85); }
  :root:not([data-theme="light"]) .nav.scrolled {
    background: rgba(22,27,34,.97);
    box-shadow: 0 1px 0 rgba(255,255,255,.06);
  }
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: .625rem;
  flex-shrink: 0;
}
.logo-mark {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--clr-grad-a), var(--clr-grad-b));
  color: #fff;
  border-radius: 9px;
  font-size: .8125rem;
  font-weight: 800;
  display: grid;
  place-items: center;
  letter-spacing: .03em;
}
.logo-text {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--clr-dark);
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}
.nav__links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-mid);
  transition: color var(--trans);
}
.nav__links a:hover { color: var(--clr-dark); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav__burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-dark);
  border-radius: 2px;
  transition: var(--trans);
}

/* ── Theme toggle button ───────────────────────────────── */

.nav__theme-toggle {
  background: none;
  border: 1.5px solid var(--clr-border);
  border-radius: 100px;
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--clr-mid);
  transition: color var(--trans), border-color var(--trans), background var(--trans);
  flex-shrink: 0;
}
.nav__theme-toggle:hover {
  color: var(--clr-dark);
  border-color: var(--clr-primary);
  background: rgba(77,134,247,.06);
}
.icon-moon { display: block; }
.icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-moon { display: none; }
  :root:not([data-theme="light"]) .icon-sun  { display: block; }
}

/* ── Hero ──────────────────────────────────────────────── */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 5rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% -10%, rgba(26,86,219,.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 80%, rgba(14,165,233,.08) 0%, transparent 55%);
  pointer-events: none;
}
[data-theme="dark"] .hero__bg {
  background:
    radial-gradient(ellipse 80% 60% at 60% -10%, rgba(77,134,247,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 80%, rgba(56,189,248,.12) 0%, transparent 55%);
}

.hero__inner {
  position: relative;
  padding-block: clamp(4rem, 10vh, 7rem);
  max-width: 760px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem 1rem;
  border-radius: 100px;
  background: rgba(26,86,219,.08);
  border: 1px solid rgba(26,86,219,.18);
  color: var(--clr-primary);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 1.5rem;
}
[data-theme="dark"] .hero__badge {
  background: rgba(77,134,247,.12);
  border-color: rgba(77,134,247,.3);
}
.hero__badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--clr-primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.3); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-mid);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

.hero__actions {
  display: flex;
  gap: .875rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat__num {
  display: block;
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--clr-dark);
}
.stat__label {
  font-size: .8125rem;
  color: var(--clr-muted);
  font-weight: 500;
}
.stat__divider {
  width: 1px; height: 36px;
  background: var(--clr-border);
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem; left: var(--gutter);
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-muted);
}
.scroll-line {
  width: 40px; height: 1px;
  background: var(--clr-muted);
}

/* ── Pillars ───────────────────────────────────────────── */

.pillars {
  padding-block: clamp(4rem, 8vw, 7rem);
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

/* Last two cards span the bottom row nicely */
.pillar:nth-child(4) { grid-column: 1 / span 1; }
.pillar:nth-child(5) { grid-column: 2 / span 1; }

/* Actually let's do a different layout:
   row 1: 3 cards; row 2: 2 centered cards */
.pillars__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}
.pillar:nth-child(1) { grid-column: 1 / span 2; }
.pillar:nth-child(2) { grid-column: 3 / span 2; }
.pillar:nth-child(3) { grid-column: 5 / span 2; }
.pillar:nth-child(4) { grid-column: 2 / span 2; }
.pillar:nth-child(5) { grid-column: 4 / span 2; }

.pillar {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pillar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.pillar--accent-1::before { background: var(--clr-a1); }
.pillar--accent-2::before { background: var(--clr-a2); }
.pillar--accent-3::before { background: var(--clr-a3); }
.pillar--accent-4::before { background: var(--clr-a4); }
.pillar--accent-5::before { background: var(--clr-a5); }

.pillar:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.pillar__icon {
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
}
.pillar--accent-1 .pillar__icon { color: var(--clr-a1); background: rgba(26,86,219,.08); }
.pillar--accent-2 .pillar__icon { color: var(--clr-a2); background: rgba(8,145,178,.08); }
.pillar--accent-3 .pillar__icon { color: var(--clr-a3); background: rgba(124,58,237,.08); }
.pillar--accent-4 .pillar__icon { color: var(--clr-a4); background: rgba(5,150,105,.08); }
.pillar--accent-5 .pillar__icon { color: var(--clr-a5); background: rgba(217,119,6,.08); }
[data-theme="dark"] .pillar--accent-1 .pillar__icon { background: rgba(77,134,247,.14); }
[data-theme="dark"] .pillar--accent-2 .pillar__icon { background: rgba(34,211,238,.12); }
[data-theme="dark"] .pillar--accent-3 .pillar__icon { background: rgba(167,139,250,.12); }
[data-theme="dark"] .pillar--accent-4 .pillar__icon { background: rgba(52,211,153,.12); }
[data-theme="dark"] .pillar--accent-5 .pillar__icon { background: rgba(251,191,36,.12); }

.pillar__number {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--clr-muted);
  position: absolute;
  top: 1.5rem; right: 1.75rem;
}

.pillar__title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--clr-dark);
}

.pillar__desc {
  font-size: .9rem;
  color: var(--clr-mid);
  line-height: 1.65;
}

.pillar__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  flex: 1;
}
.pillar__list li {
  font-size: .85rem;
  color: var(--clr-mid);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.pillar__list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}
.pillar--accent-1 .pillar__list li::before { background: var(--clr-a1); }
.pillar--accent-2 .pillar__list li::before { background: var(--clr-a2); }
.pillar--accent-3 .pillar__list li::before { background: var(--clr-a3); }
.pillar--accent-4 .pillar__list li::before { background: var(--clr-a4); }
.pillar--accent-5 .pillar__list li::before { background: var(--clr-a5); }

.pillar__cta {
  font-size: .875rem;
  font-weight: 600;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  transition: gap var(--trans), color var(--trans);
}
.pillar--accent-1 .pillar__cta { color: var(--clr-a1); }
.pillar--accent-2 .pillar__cta { color: var(--clr-a2); }
.pillar--accent-3 .pillar__cta { color: var(--clr-a3); }
.pillar--accent-4 .pillar__cta { color: var(--clr-a4); }
.pillar--accent-5 .pillar__cta { color: var(--clr-a5); }

.pillar__cta:hover { gap: .5rem; }

/* ── About ─────────────────────────────────────────────── */

.about {
  padding-block: clamp(4rem, 8vw, 7rem);
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: center;
}

.about__text {
  color: var(--clr-mid);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about__content .btn { margin-top: 1rem; }

.about__visual {
  position: relative;
  min-height: 380px;
}

.about__card {
  position: absolute;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.125rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-md);
  width: 88%;
}
.about__card--top { top: 0; left: 0; }
.about__card--mid { top: 50%; transform: translateY(-50%); right: 0; }
.about__card--bot { bottom: 0; left: 8%; }

.card-icon { font-size: 1.75rem; flex-shrink: 0; }
.card-title { font-size: .9375rem; font-weight: 700; color: var(--clr-dark); }
.card-sub { font-size: .8125rem; color: var(--clr-muted); }

.about__blob {
  position: absolute;
  inset: 15% 15%;
  background: radial-gradient(ellipse, rgba(26,86,219,.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}
[data-theme="dark"] .about__blob {
  background: radial-gradient(ellipse, rgba(77,134,247,.12) 0%, transparent 70%);
}

/* ── Contact ───────────────────────────────────────────── */

.contact {
  padding-block: clamp(4rem, 8vw, 7rem);
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-dark-80) 100%);
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .contact {
  background: linear-gradient(135deg, #0d1117 0%, #1e2430 100%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .contact {
    background: linear-gradient(135deg, #0d1117 0%, #1e2430 100%);
  }
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(26,86,219,.2) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(14,165,233,.1) 0%, transparent 55%);
  pointer-events: none;
}

.contact__inner { position: relative; max-width: 680px; margin-inline: auto; }

.contact__sub {
  color: rgba(255,255,255,.6);
  font-size: 1.0625rem;
  margin-top: .75rem;
}

.contact__form {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.125rem;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.form__group label {
  font-size: .8125rem;
  font-weight: 600;
  color: rgba(255,255,255,.75);
  letter-spacing: .02em;
}

.form__group input,
.form__group select,
.form__group textarea {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .9375rem;
  color: #fff;
  font-family: var(--font);
  transition: border-color var(--trans), background var(--trans);
  outline: none;
  width: 100%;
}
.form__group input::placeholder,
.form__group textarea::placeholder { color: rgba(255,255,255,.3); }

.form__group select option { background: var(--clr-dark-80); color: #fff; }

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: rgba(26,86,219,.7);
  background: rgba(255,255,255,.1);
  box-shadow: 0 0 0 3px rgba(26,86,219,.18);
}

.form__group textarea { resize: vertical; min-height: 100px; }

.contact__form .btn--primary {
  margin-top: .5rem;
  font-size: 1rem;
  padding: .9rem 1.5rem;
}

/* ── Footer ────────────────────────────────────────────── */

.footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,.65);
  padding-top: 3.5rem;
}
[data-theme="dark"] .footer {
  background: #0d1117;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .footer { background: #0d1117; }
}

.footer__inner {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer__brand {
  flex: 1;
  min-width: 220px;
}
.footer__brand .nav__logo { margin-bottom: .875rem; }
.footer__brand .logo-text { color: #fff; }
.footer__brand p { font-size: .875rem; line-height: 1.6; }

.footer__links {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.footer__col h4 {
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.45);
  margin-bottom: 1rem;
}
.footer__col ul { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.footer__col a {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
  transition: color var(--trans);
}
.footer__col a:hover { color: #fff; }

.footer__bottom {
  padding-block: 1.25rem;
}
.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .8125rem;
  color: rgba(255,255,255,.3);
}

/* ── Animations ────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeUp .55s cubic-bezier(.22,1,.36,1) both;
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 900px) {
  .pillars__grid {
    grid-template-columns: 1fr 1fr;
  }
  .pillar:nth-child(1) { grid-column: 1 / span 1; }
  .pillar:nth-child(2) { grid-column: 2 / span 1; }
  .pillar:nth-child(3) { grid-column: 1 / span 1; }
  .pillar:nth-child(4) { grid-column: 2 / span 1; }
  .pillar:nth-child(5) { grid-column: 1 / span 2; }

  .about__inner { grid-template-columns: 1fr; }
  .about__visual { min-height: 280px; }
  .about__card { width: 75%; }
  .about__card--mid { right: auto; left: 15%; }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .nav .btn--sm { display: none; }
  .nav__burger { display: flex; }

  .hero__scroll { display: none; }

  .pillars__grid {
    grid-template-columns: 1fr;
  }
  .pillar:nth-child(n) { grid-column: 1 / -1; }

  .form__row { grid-template-columns: 1fr; }

  .about__visual { display: none; }

  .footer__inner { flex-direction: column; }
}

/* Mobile nav open state */
.nav.open .nav__links {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
  background: var(--clr-surface);
  justify-content: center;
  align-items: center;
  gap: 2rem;
  font-size: 1.5rem;
  z-index: 99;
}