/* =========================================================
   HiTech Bangladesh — Design System
   Minimal corporate · Bangladesh green/red accents
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --brand: #006A4E;
  --brand-600: #007a58;
  --brand-700: #00543e;
  --brand-soft: rgba(0, 106, 78, 0.10);
  --mint: #00E0A0;
  --accent: #F42A41;
  --accent-soft: rgba(244, 42, 65, 0.12);

  --bg: #ffffff;
  --bg-soft: #f5f8f7;
  --surface: #ffffff;
  --surface-2: #f9fbfa;
  --text: #0f1b17;
  --text-muted: #5b6b65;
  --border: #e4eae8;
  --shadow-sm: 0 1px 2px rgba(15, 27, 23, 0.06);
  --shadow: 0 10px 30px rgba(15, 27, 23, 0.08);
  --shadow-lg: 0 24px 60px rgba(15, 27, 23, 0.12);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container: 1180px;
  --header-h: 72px;

  --font: 'Inter', 'Noto Sans Bengali', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-bn: 'Noto Sans Bengali', 'Inter', system-ui, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme='dark'] {
  --brand: #14b98a;
  --brand-600: #17c996;
  --brand-700: #0f9d75;
  --brand-soft: rgba(20, 185, 138, 0.14);
  --mint: #23e6ab;
  --accent: #ff5666;
  --accent-soft: rgba(255, 86, 102, 0.14);

  --bg: #06110d;
  --bg-soft: #0a1a14;
  --surface: #0d211a;
  --surface-2: #10271f;
  --text: #eaf5f0;
  --text-muted: #9db3ab;
  --border: #1d3a30;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

html[lang='bn'] body { font-family: var(--font-bn); line-height: 1.75; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
ul { list-style: none; }

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.2rem; }
p { color: var(--text-muted); }

::selection { background: var(--brand); color: #fff; }

:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 22px;
}

.section { padding: clamp(56px, 9vw, 104px) 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: clamp(40px, 6vw, 64px) 0; }

.section-head { max-width: 680px; margin: 0 auto clamp(32px, 5vw, 56px); text-align: center; }
.section-head p { margin-top: 14px; font-size: 1.05rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 16px;
}
.eyebrow::before { content: ''; width: 22px; height: 2px; background: var(--accent); border-radius: 2px; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  background: var(--brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.2s, box-shadow 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 22px rgba(0, 106, 78, 0.25); }
.btn-primary:hover { background: var(--brand-600); }
[data-theme='dark'] .btn-primary { color: #04130d; }

.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.btn-light { background: #fff; color: var(--brand-700); }
.btn-light:hover { background: #f0fbf6; }

.btn .i { width: 18px; height: 18px; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.header.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-sm); }

.header-inner { display: flex; align-items: center; gap: 18px; width: 100%; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand img { width: 38px; height: 38px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name b { font-size: 1.02rem; font-weight: 800; letter-spacing: -0.02em; }
.brand-name span { font-size: 0.6rem; letter-spacing: 0.24em; color: var(--brand); font-weight: 700; }

.nav { margin-left: auto; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.94rem;
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: var(--brand-soft); }
.nav-links a.active { color: var(--brand); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 8px; margin-left: 12px; }

.icon-btn {
  width: 40px; height: 40px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.icon-btn:hover { border-color: var(--brand); color: var(--brand); }
.icon-btn svg { width: 19px; height: 19px; }

.lang-btn {
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  transition: border-color 0.2s, color 0.2s;
}
.lang-btn:hover { border-color: var(--brand); color: var(--brand); }

.nav-toggle { display: none; }

.icon-btn .icon-sun { display: none; }
[data-theme='dark'] .icon-btn .icon-sun { display: block; }
[data-theme='dark'] .icon-btn .icon-moon { display: none; }
[data-theme='dark'] .icon-btn { color: var(--text); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 7vw, 84px); }
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 55% at 82% 8%, var(--brand-soft), transparent 70%),
    radial-gradient(45% 45% at 8% 92%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero h1 .hl { color: var(--brand); }
.hero-lead { font-size: clamp(1.02rem, 1.6vw, 1.18rem); max-width: 560px; margin-bottom: 30px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 18px; }
.hero-points li { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
.hero-points svg { width: 17px; height: 17px; color: var(--brand); flex-shrink: 0; }

/* Hero visual — coverage / network panel */
.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 26px;
  aspect-ratio: 1 / 0.92;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
}
.hero-visual::after {
  content: '';
  position: absolute;
  right: -60px; top: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.1;
}
.hv-top { display: flex; align-items: center; justify-content: space-between; }
.hv-title { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.hv-live { display: inline-flex; align-items: center; gap: 7px; font-size: 0.78rem; font-weight: 600; color: var(--brand); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px var(--brand-soft); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

.hv-map { position: relative; flex: 1; border-radius: var(--radius); background: var(--brand-soft); overflow: hidden; }
.hv-map svg { width: 100%; height: 100%; }
.hv-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.hv-stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; text-align: center; }
.hv-stat b { display: block; font-size: 1.1rem; color: var(--brand); }
.hv-stat span { font-size: 0.7rem; color: var(--text-muted); }

/* ---------- Stats band ---------- */
.stats-band { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface-2); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 34px 0; }
.stat { text-align: center; }
.stat b { display: block; font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; color: var(--text); letter-spacing: -0.03em; }
.stat b .unit { color: var(--brand); }
.stat span { font-size: 0.86rem; color: var(--text-muted); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s, border-color 0.25s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); }
.card h3 { margin-bottom: 9px; }
.card p { font-size: 0.94rem; }

.card-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: var(--brand-soft);
  color: var(--brand);
  margin-bottom: 18px;
}
.card-icon svg { width: 24px; height: 24px; }

.card-num {
  font-size: 0.8rem; font-weight: 800; color: var(--accent);
  letter-spacing: 0.08em; margin-bottom: 12px; display: block;
}

/* ---------- Why / feature list ---------- */
.feature-row { display: flex; gap: 16px; }
.feature-row .card-icon { margin-bottom: 0; flex-shrink: 0; }
.feature-row h3 { font-size: 1.05rem; margin-bottom: 5px; }
.feature-row p { font-size: 0.92rem; }

/* ---------- Split (text + visual) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.split h2 { margin-bottom: 18px; }
.split p + p { margin-top: 14px; }
.check-list { margin-top: 24px; display: grid; gap: 13px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 0.96rem; }
.check-list svg { width: 20px; height: 20px; color: var(--brand); flex-shrink: 0; margin-top: 2px; }
.check-list b { color: var(--text); font-weight: 600; }

/* ---------- Coverage map ---------- */
.coverage-map {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  padding: 24px;
}
.coverage-map svg { width: 100%; height: auto; }
.map-outline { fill: var(--brand-soft); stroke: var(--brand); stroke-width: 1.6; stroke-linejoin: round; }
.map-node { fill: var(--brand); }
.map-node--accent { fill: var(--accent); }
.map-ring { fill: none; stroke: var(--brand); stroke-width: 1.5; opacity: 0.3; }
.map-label { fill: var(--text-muted); font-size: 12px; font-family: var(--font); font-weight: 600; }
.net-line { fill: none; stroke: var(--brand); stroke-opacity: 0.22; stroke-width: 1.5; }
.net-line--accent { stroke: var(--accent); stroke-opacity: 0.45; }
.net-node { fill: var(--brand); }
.net-node--accent { fill: var(--accent); }
.net-node--mint { fill: var(--mint); }
.hero-visual .net-line { stroke-dasharray: 5 6; }

/* ---------- Timeline (about) ---------- */
.timeline { position: relative; margin-top: 20px; padding-left: 28px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--border); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -28px; top: 5px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--brand);
}
.tl-item time { font-size: 0.8rem; font-weight: 800; color: var(--accent); letter-spacing: 0.06em; }
.tl-item h3 { font-size: 1.05rem; margin: 4px 0 4px; }
.tl-item p { font-size: 0.92rem; }

/* ---------- Logos row ---------- */
.logos { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: clamp(24px, 5vw, 56px); }
.logos span { font-weight: 800; font-size: 1.05rem; color: var(--text-muted); opacity: 0.7; letter-spacing: 0.02em; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 22px;
  background: none; border: 0; cursor: pointer; text-align: left;
  font-weight: 600; font-size: 1rem;
}
.faq-q:hover { color: var(--brand); }
.faq-q svg { width: 20px; height: 20px; color: var(--text-muted); }
.faq-q .chev { flex-shrink: 0; transition: transform 0.25s var(--ease); }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s var(--ease); }
.faq-a p { padding: 0 22px 20px; font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  padding: clamp(38px, 6vw, 64px);
  background: linear-gradient(130deg, var(--brand-700), var(--brand));
  color: #fff;
  overflow: hidden;
  text-align: center;
}
.cta-band::after {
  content: ''; position: absolute; right: -80px; bottom: -80px;
  width: 260px; height: 260px; border-radius: 50%;
  background: var(--accent); opacity: 0.22;
}
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, 0.85); max-width: 560px; margin: 0 auto 28px; }
.cta-band .hero-cta { justify-content: center; margin-bottom: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(28px, 4vw, 48px); align-items: start; }
.info-card {
  display: flex; gap: 15px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.info-card + .info-card { margin-top: 14px; }
.info-card .card-icon { margin: 0; width: 44px; height: 44px; flex-shrink: 0; }
.info-card h3 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 3px; }
.info-card a, .info-card p { font-size: 1rem; font-weight: 600; color: var(--text); }
.info-card a:hover { color: var(--brand); }

.form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(22px, 3vw, 32px); }
.form h2 { margin-bottom: 20px; font-size: 1.4rem; }
.contact-grid h2 { margin-bottom: 20px; font-size: 1.4rem; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 7px; }
.field input, .field textarea {
  width: 100%;
  padding: 12px 15px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.form-note { font-size: 0.82rem; color: var(--text-muted); margin-top: 14px; }
.form-status { margin-top: 14px; font-size: 0.9rem; font-weight: 600; color: var(--brand); display: none; }
.form-status.show { display: block; }

.map-embed { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); line-height: 0; }
.map-embed iframe { width: 100%; height: 340px; border: 0; filter: saturate(0.9); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: clamp(48px, 7vw, 88px) 0 clamp(32px, 5vw, 52px); position: relative; overflow: hidden; }
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(50% 80% at 85% 0%, var(--brand-soft), transparent 70%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero p { max-width: 640px; font-size: 1.08rem; margin-top: 16px; }
.breadcrumb { display: flex; gap: 8px; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--brand); }

/* ---------- Misc ---------- */
.center-cta { text-align: center; margin-top: 40px; }
.mt-6 { margin-top: 26px; }

/* ---------- Footer ---------- */
.footer { background: #051510; color: #cfe6dd; padding: clamp(48px, 7vw, 72px) 0 28px; margin-top: 0; }
[data-theme='dark'] .footer { background: #030b08; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; }
.footer .brand-name b { color: #fff; }
.footer .brand-name span { color: var(--mint); }
.footer p { color: #8fada3; font-size: 0.92rem; margin-top: 16px; max-width: 320px; }
.footer h4 { color: #fff; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 16px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #a9c6bc; font-size: 0.92rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--mint); }
.footer-contact li { color: #a9c6bc; font-size: 0.92rem; margin-bottom: 10px; display: flex; gap: 9px; }
.footer-contact svg { width: 17px; height: 17px; color: var(--mint); flex-shrink: 0; margin-top: 3px; }
.footer-contact a:hover { color: var(--mint); }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a {
  width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid #24463b; border-radius: 50%; color: #cfe6dd;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.socials a:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.socials svg { width: 18px; height: 18px; }
.footer-bottom {
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid #163029;
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center;
}
.footer-bottom p { margin: 0; color: #7f9d93; font-size: 0.85rem; }
.footer-bottom .made { color: var(--mint); font-weight: 600; }

/* ---------- Reveal animation (only when JS is active) ---------- */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.js .reveal.d1 { transition-delay: 0.06s; }
.js .reveal.d2 { transition-delay: 0.12s; }
.js .reveal.d3 { transition-delay: 0.18s; }

/* ---------- 404 ---------- */
.error-wrap { min-height: calc(100vh - var(--header-h) - 220px); display: grid; place-items: center; text-align: center; padding: 60px 0; }
.error-code { font-size: clamp(4.5rem, 16vw, 9rem); font-weight: 800; line-height: 1; letter-spacing: -0.05em; color: var(--brand); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; }
  .split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-toggle { display: inline-grid; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 14px 22px 22px;
    transform: translateY(calc(-100% - var(--header-h) - 10px));
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    transition: transform 0.3s var(--ease), opacity 0.25s var(--ease), visibility 0.3s var(--ease);
    margin-left: 0;
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .nav-links { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-links a { padding: 13px 14px; }
  .header-actions { margin-left: auto; }
}

@media (max-width: 620px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-cta .btn, .cta-band .btn { width: 100%; }
  .brand-name span { letter-spacing: 0.18em; }
  .hv-stats { grid-template-columns: repeat(3, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- Motion / print ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media print {
  .header, .footer, .hero-visual, .cta-band { display: none; }
  body { color: #000; }
}