/* ============================================================
   AirKraft HVAC Services — Main Stylesheet
   Fresh palette: deep charcoal, warm off-white, cool gray,
   soft teal, muted lime. No CSS frameworks used.
   ============================================================ */

/* ===== CSS Variables ===== */
:root {
  /* Color palette */
  --charcoal: #20262c;
  --charcoal-light: #2a323a;
  --ink: #14181c;
  --off-white: #f6f3ec;
  --off-white-2: #fbfaf6;
  --cool-gray: #8a939c;
  --gray-text: #5c6670;
  --teal: #2f8f85;
  --teal-dark: #22736b;
  --lime: #b8c94a;
  --line: #e3ded4;

  /* Elevation */
  --shadow-sm: 0 2px 10px rgba(20, 24, 28, 0.06);
  --shadow-md: 0 10px 30px rgba(20, 24, 28, 0.10);
  --shadow-lg: 0 18px 44px rgba(20, 24, 28, 0.16);

  /* Radii */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;

  /* Type */
  --font-head: "Outfit", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Layout */
  --container: 1180px;
  --section-pad: clamp(64px, 8vw, 104px);

  /* Motion */
  --fade-up: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gray-text);
  background: var(--off-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--charcoal);
  line-height: 1.15;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 600; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--section-pad) 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn-primary {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 8px 22px rgba(47, 143, 133, 0.32);
}

.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(47, 143, 133, 0.4);
}

.btn-accent {
  background: var(--lime);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(184, 201, 74, 0.3);
}

.btn-accent:hover {
  background: #c9da55;
  transform: translateY(-3px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  background: #fff;
  color: var(--charcoal);
  border-color: #fff;
  transform: translateY(-3px);
}

/* ===== Section headings ===== */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.9rem;
}

.section-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 3.2rem;
  text-align: center;
}

.section-head .section-eyebrow::after {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
  display: inline-block;
}

.section-sub {
  margin-top: 1rem;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(20, 24, 28, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header.scrolled {
  background: var(--off-white);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 1rem;
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
  color: #fff;
  font-size: 1.2rem;
  transition: transform 0.3s var(--ease);
}

.brand:hover .brand-mark {
  transform: rotate(-8deg) scale(1.06);
}

.brand-text {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  line-height: 1;
  display: flex;
  flex-direction: column;
}

.brand-text strong {
  color: var(--lime);
}

.brand-text small {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  font-weight: 500;
  margin-top: 3px;
}

.site-header.scrolled .brand-text { color: var(--charcoal); }
.site-header.scrolled .brand-text small { color: var(--cool-gray); }

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.85);
  border-radius: 8px;
  transition: color 0.25s var(--ease);
}

.site-header.scrolled .nav-link { color: var(--charcoal); }

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.3rem;
  height: 2px;
  border-radius: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav-link:hover {
  color: var(--teal);
}

.site-header.scrolled .nav-link:hover { color: var(--teal); }

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  padding: 0.62rem 1.3rem;
  font-size: 0.9rem;
}

/* Hamburger */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  cursor: pointer;
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  z-index: 1001;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.site-header.scrolled .hamburger {
  background: rgba(20, 24, 28, 0.05);
  border-color: var(--line);
  color: var(--charcoal);
}

.hamburger:hover {
  transform: scale(1.05);
}

/* Open (bars) and Close (x) icons swap depending on menu state */
.hamburger-icon-close {
  display: none;
}

.hamburger[aria-expanded="true"] .hamburger-icon-open {
  display: none;
}

.hamburger[aria-expanded="true"] .hamburger-icon-close {
  display: inline-block;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: heroZoom 18s ease-out forwards;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    rgba(14, 18, 22, 0.94) 0%,
    rgba(14, 18, 22, 0.82) 45%,
    rgba(14, 18, 22, 0.4) 100%
  );
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
  width: 100%;
}

.hero-copy {
  color: #fff;
  max-width: 620px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.84rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
  background: rgba(184, 201, 74, 0.12);
  border: 1px solid rgba(184, 201, 74, 0.4);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  margin-bottom: 1.6rem;
}

.hero h1 {
  color: #fff;
  margin-bottom: 1.2rem;
}

.accent-word {
  color: var(--lime);
  position: relative;
  white-space: nowrap;
}

.accent-word::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.12em;
  height: 0.28em;
  background: rgba(47, 143, 133, 0.45);
  border-radius: 4px;
  z-index: -1;
}

.hero-copy > p {
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.6rem;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.6rem;
}

.hero-highlights li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero-highlights i {
  color: var(--teal);
  font-size: 1.05rem;
}

/* Hero decorative visual */
.hero-visual {
  position: relative;
  min-height: 360px;
  display: none;
}

.gauge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  animation: gaugeFloat 6s ease-in-out infinite;
}

.gauge-label {
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.gauge-value {
  font-family: var(--font-head);
  font-size: 2.6rem;
  color: #fff;
}

.gauge-ring {
  width: 54px;
  height: 54px;
  margin-top: 0.6rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--lime);
  color: var(--ink);
  font-size: 1.4rem;
}

.float-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.15rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  animation: chipFloat 7s ease-in-out infinite;
}

.float-chip i {
  color: var(--lime);
  font-size: 1.05rem;
}

.chip-one {
  top: 8%;
  left: 6%;
  animation-delay: 0s;
}

.chip-two {
  bottom: 12%;
  right: 4%;
  animation-delay: 2.4s;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--off-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.about-media {
  position: relative;
}

.about-img-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}

.about-img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(20, 24, 28, 0.35) 100%);
}

.about-img-frame img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.about-media:hover .about-img-frame img {
  transform: scale(1.05);
}

.about-badge {
  position: absolute;
  left: -1.2rem;
  bottom: 2.2rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.3rem;
  background: var(--off-white-2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-width: 300px;
}

.about-badge > i {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--teal);
  color: #fff;
  font-size: 1.25rem;
}

.about-badge strong {
  display: block;
  font-family: var(--font-head);
  color: var(--charcoal);
  font-size: 0.95rem;
}

.about-badge span {
  font-size: 0.82rem;
  color: var(--cool-gray);
}

.about-copy > p {
  margin: 0 0 1.1rem;
}

.about-copy h2 {
  margin-bottom: 1.1rem;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.about-card {
  background: var(--off-white-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.1rem;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(47, 143, 133, 0.35);
}

.about-card-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(47, 143, 133, 0.12);
  color: var(--teal);
  font-size: 1.15rem;
  margin-bottom: 0.85rem;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.about-card:hover .about-card-icon {
  transform: translateY(-4px) rotate(-6deg);
  background: var(--teal);
  color: #fff;
}

.about-card h3 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.about-card p {
  font-size: 0.9rem;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  background: var(--off-white-2);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.service-card {
  position: relative;
  background: var(--off-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.7rem;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: rgba(47, 143, 133, 0.3);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: linear-gradient(135deg, rgba(47, 143, 133, 0.12), rgba(184, 201, 74, 0.18));
  color: var(--teal-dark);
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.service-card:hover .service-icon {
  transform: translateY(-5px) scale(1.05) rotate(-5deg);
  background: var(--teal);
  color: #fff;
}

.service-card h3 {
  margin-bottom: 0.6rem;
}

.service-card > p {
  font-size: 0.94rem;
  margin-bottom: 1.2rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--teal);
}

.card-link i {
  transition: transform 0.3s var(--ease);
}

.card-link:hover i {
  transform: translateX(5px);
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  background: var(--charcoal);
  position: relative;
}

.features .section-title { color: #fff; }
.features .section-sub { color: rgba(255, 255, 255, 0.7); }
.features .section-eyebrow::before { background: var(--lime); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), border-color 0.35s var(--ease);
}

.feature-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(184, 201, 74, 0.4);
}

.feature-card > i {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(184, 201, 74, 0.15);
  color: var(--lime);
  font-size: 1.35rem;
  margin-bottom: 1.1rem;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.feature-card:hover > i {
  transform: translateY(-4px) rotate(-8deg);
  background: var(--lime);
  color: var(--ink);
}

.feature-card h3 {
  color: #fff;
  margin-bottom: 0.55rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.72);
}

/* ============================================================
   SYSTEM UPDATES
   ============================================================ */
.updates {
  background: var(--off-white);
}

.updates-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.updates-copy h2 {
  margin-bottom: 1.1rem;
}

.updates-copy > p {
  margin-bottom: 1.4rem;
}

.updates-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 0 0 1.6rem;
}

.update-item {
  display: flex;
  align-items: flex-start;
  gap: 0.95rem;
  padding: 1rem 1.15rem;
  background: var(--off-white-2);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.update-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

.update-item i {
  color: var(--teal);
  font-size: 1.15rem;
  margin-top: 0.15rem;
  transition: transform 0.3s var(--ease);
}

.update-item:hover i {
  transform: scale(1.15);
}

.update-item p {
  font-size: 0.94rem;
}

.update-item strong {
  color: var(--charcoal);
  font-family: var(--font-head);
  font-weight: 600;
}

.updates-media {
  position: relative;
}

.updates-img-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.updates-img-frame img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.updates-media:hover .updates-img-frame img {
  transform: scale(1.05);
}

.updates-card {
  position: absolute;
  right: -1rem;
  bottom: -1.8rem;
  left: -1rem;
  background: var(--off-white-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.4rem 1.5rem;
}

.updates-card h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.02rem;
  margin-bottom: 0.9rem;
}

.updates-card h3 i {
  color: var(--teal);
}

.updates-card ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1rem;
}

.updates-card li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.88rem;
}

.updates-card li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0.1em;
  color: var(--lime);
  font-size: 0.78rem;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how {
  background: linear-gradient(180deg, var(--off-white-2) 0%, var(--off-white) 100%);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  counter-reset: step;
}

.step {
  position: relative;
  text-align: center;
  padding: 2.2rem 1.3rem 1.8rem;
  background: var(--off-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.step:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.step-number {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px rgba(184, 201, 74, 0.4);
}

.step-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(47, 143, 133, 0.12);
  color: var(--teal);
  font-size: 1.5rem;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.step:hover .step-icon {
  transform: rotate(-10deg) scale(1.08);
  background: var(--teal);
  color: #fff;
}

.step h3 {
  font-size: 1.02rem;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.9rem;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  background: var(--off-white-2);
}

.faq-accordion {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.faq-item {
  background: var(--off-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.faq-item.open {
  border-color: rgba(47, 143, 133, 0.45);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  padding: 1.15rem 1.4rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  color: var(--charcoal);
  transition: color 0.25s var(--ease);
}

.faq-question:hover {
  color: var(--teal);
}

.faq-icon {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(47, 143, 133, 0.1);
  color: var(--teal);
  font-size: 0.9rem;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  background: var(--teal);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}

.faq-answer p {
  padding: 0 1.4rem 1.3rem;
  font-size: 0.95rem;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background: var(--off-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-copy h2 {
  margin-bottom: 1rem;
}

.contact-copy > p {
  margin-bottom: 2rem;
  max-width: 540px;
}

.contact-info {
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  background: var(--off-white-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.contact-row:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(47, 143, 133, 0.12);
  color: var(--teal);
  font-size: 1.15rem;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.contact-row:hover .contact-icon {
  transform: scale(1.1) rotate(-6deg);
  background: var(--teal);
  color: #fff;
}

.contact-row h3 {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.contact-row p {
  font-size: 0.92rem;
}

.contact-note .note-card {
  position: sticky;
  top: 6rem;
  background: linear-gradient(160deg, var(--charcoal) 0%, var(--charcoal-light) 100%);
  border-radius: var(--radius-lg);
  padding: 2.2rem 2rem;
  color: rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.note-card::before {
  content: "\f06e";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: -0.8rem;
  bottom: -1.2rem;
  font-size: 9rem;
  color: rgba(184, 201, 74, 0.08);
}

.note-card > i {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--lime);
  color: var(--ink);
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
}

.note-card h3 {
  color: #fff;
  margin-bottom: 0.7rem;
}

.note-card p {
  font-size: 0.94rem;
  margin-bottom: 1rem;
}

.note-card ul {
  margin: 0 0 1.2rem;
}

.note-card li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.94rem;
  margin-bottom: 0.55rem;
}

.note-card li::before {
  content: "\f105";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0;
  color: var(--lime);
}

.note-foot {
  font-size: 0.85rem !important;
  color: rgba(255, 255, 255, 0.6) !important;
  margin-bottom: 0 !important;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.75);
  padding-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.6rem;
  padding-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.93rem;
  margin: 1.2rem 0 1.4rem;
  max-width: 300px;
}

.footer-brand-link .brand-text {
  color: #fff;
}

.footer-brand-link .brand-text small {
  color: rgba(255, 255, 255, 0.6);
}

.social-links {
  display: flex;
  gap: 0.7rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 0.95rem;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.social-links a:hover {
  transform: translateY(-4px);
  background: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}

.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 1.1rem;
  position: relative;
  padding-bottom: 0.55rem;
}

.footer-col h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.footer-col a:hover {
  color: var(--lime);
  padding-left: 5px;
}

.footer-col.footer-contact a {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.footer-col.footer-contact a i {
  color: var(--teal);
  width: 18px;
}

.footer-cta {
  margin-top: 1.3rem;
  font-size: 0.88rem;
  padding: 0.7rem 1.3rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1.3rem 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ============================================================
   ENTRY ANIMATIONS (scroll reveal)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroZoom {
  from {
    transform: scale(1.12);
  }
  to {
    transform: scale(1.04);
  }
}

@keyframes gaugeFloat {
  0%, 100% {
    transform: translate(-50%, -50%) translateY(0);
  }
  50% {
    transform: translate(-50%, -50%) translateY(-10px);
  }
}

@keyframes chipFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* ============================================================
   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;
  }
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 1024px) {
  .nav-list {
    gap: 0.1rem;
  }

  .nav-link {
    padding: 0.5rem 0.6rem;
    font-size: 0.88rem;
  }

  .nav-cta {
    padding: 0.6rem 1.1rem;
    font-size: 0.85rem;
  }

  .services-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .updates-layout {
    gap: 2.5rem;
  }

  .about-badge {
    left: 0;
    bottom: 1.5rem;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 1.4rem;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE NAV & SMALLER LAYOUTS
   ============================================================ */
@media (max-width: 860px) {
  /* Mobile navigation — normal dropdown below the header (no scrolling) */
  .hamburger {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    padding: 1rem 1.5rem 1.6rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s var(--ease);
    z-index: 999;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-bottom: 1.4rem;
  }

  .nav-link,
  .site-header.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05rem;
    padding: 0.9rem 0.7rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link:hover,
  .site-header.scrolled .nav-link:hover {
    color: var(--lime);
  }

  .nav-cta {
    width: 100%;
    color: var(--ink);
  }

  /* Prevent background scrolling while the menu is open */
  body.menu-open {
    overflow: hidden;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
    padding-top: 7.5rem;
  }

  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    display: none;
  }

  .about-grid,
  .updates-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .updates-card {
    position: static;
    margin-top: 1.2rem;
  }

  .updates-img-frame img {
    height: 360px;
  }

  .contact-note .note-card {
    position: static;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 560px) {
  .section-head {
    margin-bottom: 2.2rem;
  }

  .header-inner {
    height: 66px;
  }

  .hero {
    padding-top: 6.8rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-highlights {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .about-img-frame img {
    height: 320px;
  }

  .about-badge {
    position: static;
    margin-top: 1rem;
  }

  .about-cards {
    grid-template-columns: 1fr;
  }

  .services-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .updates-card ul {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .faq-question {
    padding: 1.05rem 1.15rem;
    font-size: 0.95rem;
  }

  .faq-answer p {
    padding: 0 1.15rem 1.15rem;
  }
}