/* ============================================================
   VAERONIX — Premium Technology Website
   style.css
   Pure CSS3. Design tokens + components + responsive + a11y.
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand palette */
  --navy-deep: #0B1026;
  --navy-midnight: #060917;
  --navy-tech: #182B4F;
  --blue-electric: #5B98F7;
  --cyan-sky: #72CAF9;
  --white-off: #F5F6FB;
  --blue-soft: #D9E2F5;
  --purple: #8A6FF0;

  /* Derived surfaces */
  --surface-card: rgba(24, 43, 79, 0.42);
  --surface-card-solid: #131E38;
  --surface-glass: rgba(11, 16, 38, 0.72);
  --border-hair: rgba(114, 202, 249, 0.14);
  --border-hair-strong: rgba(114, 202, 249, 0.30);

  /* Signature gradient */
  --grad-brand: linear-gradient(120deg, #8A6FF0 0%, #5B98F7 52%, #72CAF9 100%);
  --grad-brand-soft: linear-gradient(120deg, rgba(138,111,240,0.16), rgba(91,152,247,0.16) 55%, rgba(114,202,249,0.16));

  /* Text */
  --text-strong: var(--white-off);
  --text-body: var(--blue-soft);
  --text-muted: #93A2C6;

  /* System states */
  --danger: #F87A8B;
  --success: #5FD3A3;

  /* Type */
  --font-display: "Plus Jakarta Sans", "Manrope", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Rhythm */
  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 48px);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --shadow-soft: 0 20px 60px -24px rgba(3, 7, 24, 0.85);
  --shadow-glow: 0 0 0 1px var(--border-hair), 0 24px 60px -30px rgba(91, 152, 247, 0.55);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.5s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--navy-deep);
  color: var(--text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--text-strong); line-height: 1.12; font-weight: 700; letter-spacing: -0.02em; }

/* ---------- Ambient background ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 45% at 78% -5%, rgba(91,152,247,0.16), transparent 60%),
    radial-gradient(50% 40% at 10% 8%, rgba(138,111,240,0.14), transparent 62%),
    var(--navy-deep);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(114,202,249,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(114,202,249,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
}

/* ---------- Utilities ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 9vw, 128px); position: relative; }
.section--tight { padding-block: clamp(48px, 6vw, 88px); }
.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 0.74rem; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--cyan-sky);
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--grad-brand); }
.lede { color: var(--text-body); font-size: clamp(1rem, 1.4vw, 1.15rem); max-width: 62ch; }
.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-block: 16px 18px; }

/* Skip link */
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--blue-electric); color: #04122e; font-weight: 700;
  padding: 10px 18px; border-radius: 10px; transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 16px; }

/* Focus visibility */
:focus-visible {
  outline: 2px solid var(--cyan-sky);
  outline-offset: 3px;
  border-radius: 6px;
}
/* Nav links/buttons get a tighter, on-brand focus ring (no bulky box) */
.nav__link:focus-visible {
  outline: 2px solid var(--cyan-sky);
  outline-offset: 2px;
  border-radius: 10px;
  background: rgba(114, 202, 249, 0.08);
}
/* Mouse users shouldn't see any ring on the dropdown trigger */
button.nav__link:focus:not(:focus-visible) { outline: none; }

/* ---------- Buttons ---------- */
.btn {
  --_bg: var(--grad-brand);
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  padding: 13px 24px; border-radius: 12px; border: 1px solid transparent;
  color: #061024; background: var(--_bg);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
  box-shadow: 0 10px 30px -12px rgba(91,152,247,0.7);
  white-space: nowrap;
}
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 18px 42px -14px rgba(114,202,249,0.75); filter: brightness(1.05); }
.btn:hover .arrow { transform: translateX(4px); }
.btn:active { transform: translateY(0); }

.btn--ghost {
  background: rgba(114,202,249,0.05);
  color: var(--text-strong);
  border: 1px solid var(--border-hair-strong);
  box-shadow: none;
}
.btn--ghost:hover { background: rgba(114,202,249,0.12); border-color: var(--cyan-sky); box-shadow: 0 12px 30px -18px rgba(114,202,249,0.6); }

.btn--sm { padding: 10px 18px; font-size: 0.88rem; }
.btn--block { width: 100%; justify-content: center; }

.textlink {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 600; color: var(--cyan-sky);
  transition: gap 0.25s var(--ease), color 0.2s var(--ease);
}
.textlink:hover { gap: 12px; color: var(--white-off); }

/* ============================================================
   NAVBAR
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border-hair);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  height: 74px;
}
.nav__logo { display: inline-flex; align-items: center; }
.nav__logo img { height: 40px; width: auto; }

.nav__menu { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative; display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 14px; border-radius: 10px;
  font-family: var(--font-display); font-weight: 500; font-size: 0.94rem;
  color: var(--text-body); transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
/* Reset native chrome for <button> used as a nav link (Services dropdown) */
button.nav__link {
  appearance: none; -webkit-appearance: none;
  background: transparent; border: 0; cursor: pointer; line-height: inherit;
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--white-off); }
.nav__link::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--grad-brand); border-radius: 2px; transform: scaleX(0); transform-origin: left;
  transition: transform 0.28s var(--ease);
}
.nav__link:hover::after, .nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* Dropdown */
.nav__item--drop { position: relative; }
.nav__caret { transition: transform 0.25s var(--ease); }
.nav__dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translate(-50%, 8px);
  min-width: 260px; padding: 10px; border-radius: 16px;
  background: rgba(9, 14, 33, 0.96); border: 1px solid var(--border-hair);
  box-shadow: var(--shadow-soft);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  backdrop-filter: blur(12px);
}
.nav__item--drop:hover .nav__dropdown,
.nav__item--drop:focus-within .nav__dropdown,
.nav__dropdown.is-open {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0);
}
.nav__item--drop:hover .nav__caret,
.nav__item--drop:focus-within .nav__caret { transform: rotate(180deg); }
.nav__dropdown a {
  display: flex; flex-direction: column; gap: 2px;
  padding: 11px 13px; border-radius: 10px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.92rem; color: var(--white-off);
  transition: background 0.2s var(--ease);
}
.nav__dropdown a span { font-family: var(--font-body); font-weight: 400; font-size: 0.8rem; color: var(--text-muted); }
.nav__dropdown a:hover { background: var(--grad-brand-soft); }

.nav__cta { display: inline-flex; }

.nav__toggle {
  display: none; width: 46px; height: 46px; border-radius: 12px;
  background: rgba(114,202,249,0.06); border: 1px solid var(--border-hair);
  position: relative;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 20px; height: 2px;
  background: var(--white-off); border-radius: 2px; transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle span::before { transform: translate(-50%, -8px); }
.nav__toggle span::after { transform: translate(-50%, 6px); }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { transform: translate(-50%, -50%) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after { transform: translate(-50%, -50%) rotate(-45deg); }

/* Mobile panel */
.nav__mobile {
  position: fixed; inset: 74px 0 0 0; z-index: 99;
  background: rgba(6, 9, 23, 0.98);
  backdrop-filter: blur(14px);
  padding: 24px var(--gutter) 40px;
  transform: translateX(100%);
  transition: transform 0.42s var(--ease);
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 6px;
}
.nav__mobile.is-open { transform: translateX(0); }
.nav__mobile a {
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem;
  color: var(--white-off); padding: 14px 6px; border-bottom: 1px solid rgba(114,202,249,0.08);
}
.nav__mobile .m-sub { font-size: 0.92rem; color: var(--text-body); padding-left: 22px; font-weight: 500; }
.nav__mobile .m-label { font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--cyan-sky); padding: 18px 6px 6px; border: 0; }
.nav__mobile .btn { margin-top: 20px; }
body.nav-open { overflow: hidden; }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; padding-top: clamp(120px, 16vw, 168px); padding-bottom: clamp(64px, 9vw, 120px); overflow: hidden; }
.hero__grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 64px); align-items: center;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px; border-radius: 100px;
  background: var(--grad-brand-soft); border: 1px solid var(--border-hair-strong);
  font-family: var(--font-display); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan-sky);
}
.hero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-sky); box-shadow: 0 0 12px var(--cyan-sky); }
.hero h1 {
  font-size: clamp(2.3rem, 5.6vw, 4rem);
  margin-block: 22px 20px;
  letter-spacing: -0.03em;
}
.hero h1 .gradient-text { display: inline; }
.hero__sub { font-size: clamp(1.02rem, 1.5vw, 1.2rem); max-width: 54ch; color: var(--text-body); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 24px 34px; margin-top: 40px; }
.hero__meta div { display: flex; flex-direction: column; }
.hero__meta strong { font-family: var(--font-display); font-size: 1.05rem; color: var(--white-off); }
.hero__meta span { font-size: 0.82rem; color: var(--text-muted); }

/* Hero orbit visual */
.orbit {
  position: relative; aspect-ratio: 1 / 1; width: 100%; max-width: 480px; margin-inline: auto;
  display: grid; place-items: center;
}
.orbit__core {
  position: absolute; width: 46%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(114,202,249,0.5), rgba(91,152,247,0.12) 60%, transparent 72%);
  filter: blur(2px);
}
.orbit__logo {
  position: relative; z-index: 3; width: 40%;
  filter: drop-shadow(0 18px 40px rgba(91,152,247,0.5));
  animation: floaty 7s var(--ease) infinite;
}
.orbit__ring {
  position: absolute; border-radius: 50%; border: 1px solid rgba(114,202,249,0.28);
  animation: spin linear infinite;
}
.orbit__ring--1 { width: 74%; aspect-ratio: 1; animation-duration: 26s; border-color: rgba(138,111,240,0.3); }
.orbit__ring--2 { width: 92%; aspect-ratio: 1; animation-duration: 42s; animation-direction: reverse; border-style: dashed; border-color: rgba(91,152,247,0.22); }
.orbit__ring--3 { width: 58%; aspect-ratio: 1; animation-duration: 18s; border-color: rgba(114,202,249,0.34); }
.orbit__node {
  position: absolute; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad-brand); box-shadow: 0 0 16px var(--cyan-sky); top: -7px; left: calc(50% - 7px);
}
.orbit__ring--1 .orbit__node { background: var(--purple); box-shadow: 0 0 16px var(--purple); }
.orbit__ring--3 .orbit__node { background: var(--cyan-sky); }
.orbit__glow {
  position: absolute; inset: -12%; border-radius: 50%; z-index: -1;
  background: radial-gradient(circle, rgba(91,152,247,0.28), transparent 62%);
  filter: blur(20px);
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes floaty { 0%,100% { transform: translateY(-6px); } 50% { transform: translateY(6px); } }

/* ============================================================
   VALUE / FEATURE GRID
   ============================================================ */
.grid { display: grid; gap: 22px; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; padding: 28px 26px; border-radius: var(--radius);
  background: var(--surface-card);
  border: 1px solid var(--border-hair);
  backdrop-filter: blur(6px);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad-brand); opacity: 0;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  transition: opacity 0.35s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px -34px rgba(91,152,247,0.55); }
.card:hover::before { opacity: 0.9; }

.card__num {
  font-family: var(--font-display); font-weight: 700; font-size: 0.82rem; letter-spacing: 0.1em;
  color: var(--cyan-sky); opacity: 0.85;
}
.card__icon {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--grad-brand-soft); border: 1px solid var(--border-hair);
  margin-bottom: 18px; color: var(--cyan-sky);
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 1.18rem; margin-block: 12px 8px; }
.card p { font-size: 0.94rem; color: var(--text-body); }

/* Service card */
.service-card { display: flex; flex-direction: column; }
.service-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 20px; }
.service-card ul li {
  font-size: 0.8rem; color: var(--text-body);
  padding: 5px 12px; border-radius: 100px;
  background: rgba(114,202,249,0.06); border: 1px solid var(--border-hair);
}
.service-card .textlink { margin-top: auto; }

/* ============================================================
   PROCESS
   ============================================================ */
.process { position: relative; }
.process__track { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.process__track::before {
  content: ""; position: absolute; top: 26px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(114,202,249,0.4) 12%, rgba(114,202,249,0.4) 88%, transparent);
}
.step { position: relative; text-align: center; }
.step__dot {
  width: 54px; height: 54px; margin: 0 auto 18px; border-radius: 50%;
  display: grid; place-items: center; position: relative; z-index: 2;
  background: var(--navy-deep); border: 1px solid var(--border-hair-strong);
  font-family: var(--font-display); font-weight: 700; color: var(--cyan-sky);
  box-shadow: 0 0 0 6px rgba(11,16,38,0.9), 0 10px 26px -12px rgba(91,152,247,0.5);
}
.step h3 { font-size: 1.05rem; margin-bottom: 6px; }
.step p { font-size: 0.86rem; color: var(--text-muted); }

/* ============================================================
   TECH CAPABILITIES
   ============================================================ */
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.tech-cat { padding: 22px 22px; }
.tech-cat h3 { font-size: 1.05rem; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.tech-cat h3 .tag { width: 8px; height: 8px; border-radius: 50%; background: var(--grad-brand); }
.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  font-size: 0.82rem; color: var(--text-body);
  padding: 6px 13px; border-radius: 8px;
  background: rgba(24,43,79,0.5); border: 1px solid var(--border-hair);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.badge:hover { color: var(--white-off); border-color: var(--border-hair-strong); background: rgba(91,152,247,0.12); }

/* ============================================================
   SPLIT / ABOUT
   ============================================================ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.mission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; }
.mission-card { padding: 24px; }
.mission-card h3 { font-size: 1rem; color: var(--cyan-sky); margin-bottom: 10px; letter-spacing: 0.02em; }
.mission-card p { font-size: 0.94rem; }

.approach-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.approach-pills span {
  font-family: var(--font-display); font-weight: 600; font-size: 0.9rem; color: var(--white-off);
  padding: 9px 18px; border-radius: 100px; background: var(--grad-brand-soft); border: 1px solid var(--border-hair-strong);
}

.visual-panel {
  position: relative; aspect-ratio: 4/3; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-hair); background: linear-gradient(160deg, #0e1836, #0a1128);
  display: grid; place-items: center;
}
.visual-panel .orbit { max-width: 340px; }

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  padding: clamp(40px, 6vw, 72px); text-align: center;
  background: linear-gradient(160deg, rgba(24,43,79,0.7), rgba(11,16,38,0.7));
  border: 1px solid var(--border-hair-strong);
}
.cta-banner::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(60% 120% at 50% -10%, rgba(91,152,247,0.28), transparent 60%),
              radial-gradient(50% 100% at 100% 120%, rgba(138,111,240,0.24), transparent 60%);
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 16px; }
.cta-banner p { max-width: 60ch; margin: 0 auto 30px; color: var(--text-body); }
.cta-banner .hero__cta { justify-content: center; }

/* ============================================================
   BLOG
   ============================================================ */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.post { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.post__media {
  aspect-ratio: 16/9; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #12203f, #0a1026);
  display: grid; place-items: center;
}
.post__media .glyph { width: 42%; opacity: 0.5; }
.post__media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 80% at 30% 20%, rgba(91,152,247,0.22), transparent 60%);
}
.post__body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.post__meta { display: flex; align-items: center; gap: 12px; font-size: 0.78rem; color: var(--text-muted); margin-bottom: 12px; }
.post__cat {
  font-family: var(--font-display); font-weight: 600; font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--cyan-sky); text-transform: uppercase;
  padding: 4px 10px; border-radius: 6px; background: rgba(114,202,249,0.08);
}
.post h3 { font-size: 1.12rem; margin-bottom: 10px; }
.post p { font-size: 0.9rem; color: var(--text-body); margin-bottom: 18px; }
.post .textlink { margin-top: auto; font-size: 0.9rem; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.filter-bar button {
  font-family: var(--font-display); font-weight: 500; font-size: 0.86rem; color: var(--text-body);
  padding: 8px 16px; border-radius: 100px; background: rgba(114,202,249,0.05); border: 1px solid var(--border-hair);
  transition: all 0.2s var(--ease);
}
.filter-bar button:hover { color: var(--white-off); border-color: var(--border-hair-strong); }
.filter-bar button[aria-pressed="true"] { background: var(--grad-brand); color: #061024; border-color: transparent; }

/* ============================================================
   ARTICLE (blog detail)
   ============================================================ */
.article { max-width: 760px; margin-inline: auto; }
.article__head { margin-bottom: 40px; }
.article__head h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); margin-block: 18px 20px; }
.prose { color: var(--text-body); font-size: 1.04rem; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { font-size: 1.5rem; margin-top: 1.8em; }
.prose h3 { font-size: 1.2rem; margin-top: 1.5em; color: var(--cyan-sky); }
.prose ul { list-style: disc; padding-left: 1.3em; }
.prose ul li { margin-top: 0.5em; }
.prose strong { color: var(--white-off); }
.prose blockquote {
  border-left: 3px solid var(--blue-electric); padding: 4px 0 4px 22px; margin-left: 0;
  color: var(--white-off); font-family: var(--font-display); font-size: 1.15rem;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(28px, 5vw, 56px); align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.info-item { display: flex; gap: 16px; padding: 20px; }
.info-item .card__icon { margin-bottom: 0; flex-shrink: 0; width: 46px; height: 46px; }
.info-item h3 { font-size: 0.98rem; margin-bottom: 4px; }
.info-item p, .info-item a { font-size: 0.94rem; color: var(--text-body); }
.info-item a:hover { color: var(--cyan-sky); }

.form { display: grid; gap: 18px; padding: clamp(24px, 4vw, 36px); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label {
  font-family: var(--font-display); font-weight: 500; font-size: 0.86rem; color: var(--blue-soft);
}
.field label .req { color: var(--cyan-sky); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 0.94rem; color: var(--white-off);
  background: rgba(6,9,23,0.6); border: 1px solid var(--border-hair);
  border-radius: 11px; padding: 12px 14px; width: 100%;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-electric);
  box-shadow: 0 0 0 3px rgba(91,152,247,0.18);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2372CAF9' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.field select option { background: var(--navy-midnight); color: var(--white-off); }
.field input[aria-invalid="true"], .field select[aria-invalid="true"], .field textarea[aria-invalid="true"] {
  border-color: var(--danger); box-shadow: 0 0 0 3px rgba(248,122,139,0.16);
}
.field__error { font-size: 0.8rem; color: var(--danger); min-height: 1em; display: none; }
.field__error.is-visible { display: flex; align-items: center; gap: 6px; }
.form__note { font-size: 0.82rem; color: var(--text-muted); }
.form__status {
  display: none; padding: 14px 16px; border-radius: 11px; font-size: 0.9rem;
  border: 1px solid; align-items: center; gap: 10px;
}
.form__status.is-ok { display: flex; color: var(--success); border-color: rgba(95,211,163,0.4); background: rgba(95,211,163,0.08); }
.form__status.is-err { display: flex; color: var(--danger); border-color: rgba(248,122,139,0.4); background: rgba(248,122,139,0.08); }

.map-embed { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-hair); margin-top: 22px; }
.map-embed iframe { display: block; width: 100%; height: 260px; border: 0; filter: grayscale(0.2) invert(0.92) hue-rotate(180deg) brightness(0.9) contrast(0.9); }

/* ============================================================
   PAGE HEADER (interior pages)
   ============================================================ */
.page-head { padding-top: clamp(128px, 15vw, 172px); padding-bottom: clamp(20px, 3vw, 36px); text-align: center; }
.page-head h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-block: 16px 16px; }
.page-head .lede { margin-inline: auto; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: 0.82rem; color: var(--text-muted); margin-top: 18px; }
.breadcrumb a:hover { color: var(--cyan-sky); }

/* ============================================================
   SERVICE DETAIL
   ============================================================ */
.svc-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(32px,5vw,64px); align-items: center; }
.svc-list { display: grid; gap: 14px; margin-top: 8px; }
.svc-list li {
  display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px;
  border-radius: var(--radius); background: var(--surface-card); border: 1px solid var(--border-hair);
}
.svc-list .tick {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: var(--grad-brand); color: #061024;
}
.svc-list h3 { font-size: 1rem; margin-bottom: 2px; }
.svc-list p { font-size: 0.9rem; color: var(--text-muted); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy-midnight); border-top: 1px solid var(--border-hair); margin-top: 40px; }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; padding-block: clamp(48px, 6vw, 72px); }
.footer__brand img { height: 52px; width: auto; margin-bottom: 18px; }
.footer__brand p { font-size: 0.92rem; color: var(--text-muted); max-width: 34ch; }
.footer h4 {
  font-family: var(--font-display); font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--cyan-sky); margin-bottom: 18px;
}
.footer ul li { margin-bottom: 11px; }
.footer ul a { font-size: 0.92rem; color: var(--text-body); transition: color 0.2s var(--ease); }
.footer ul a:hover { color: var(--white-off); }
.footer address { font-style: normal; font-size: 0.92rem; color: var(--text-body); line-height: 1.7; }
.footer address a { color: var(--white-off); font-weight: 600; }
.footer__bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px;
  padding-block: 24px; border-top: 1px solid rgba(114,202,249,0.08);
  font-size: 0.86rem; color: var(--text-muted);
}
.footer__bottom nav { display: flex; gap: 20px; }
.footer__bottom nav a:hover { color: var(--cyan-sky); }

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .process__track { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .process__track::before { display: none; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .nav__menu, .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .hero__grid { grid-template-columns: 1fr; }
  .orbit { grid-row: 1; max-width: 340px; }
  .split, .contact-grid, .svc-hero { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .mission-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .grid--4, .grid--3, .grid--2, .blog-grid, .tech-grid { grid-template-columns: 1fr; }
  .process__track { grid-template-columns: 1fr; gap: 24px; text-align: left; }
  .step { display: grid; grid-template-columns: 54px 1fr; gap: 16px; align-items: center; text-align: left; }
  .step__dot { margin: 0; }
  .form__row { grid-template-columns: 1fr; }
  .mission-grid { grid-template-columns: 1fr; }
  .hero__meta { gap: 18px 24px; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .orbit__ring, .orbit__logo { animation: none; }
}