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

:root {
  --navy:      #0d2b6e;
  --navy-dark: #081a47;
  --blue:      #1a56db;
  --cyan:      #0ea5e9;
  --accent:    #0d2b6e;
  --white:     #ffffff;
  --light:     #f4f7fc;
  --light2:    #eaf0fb;
  --border:    #dce6f5;
  --text:      #1e2d4f;
  --muted:     #5a6e8c;
  --shadow:    0 4px 24px rgba(13,43,110,.10);
  --shadow-md: 0 8px 40px rgba(13,43,110,.14);
  --shadow-lg: 0 16px 56px rgba(13,43,110,.18);
  --r:         8px;
  --r-md:      14px;
  --r-lg:      20px;
  --t:         .25s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.section { padding: 96px 0; }
.section--gray { background: var(--light); }
.hidden { display: none !important; }

/* ===== TYPOGRAPHY ===== */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}
.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 3px;
  background: var(--blue);
  border-radius: 2px;
}
.section-title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--navy);
  margin-bottom: 16px;
}
.section-title em { font-style: normal; color: var(--blue); }
.section-sub { font-size: 1rem; color: var(--muted); max-width: 560px; }
.section-header { text-align: center; margin-bottom: 52px; }
.section-header .section-eyebrow::before { display: none; }
.section-header .section-eyebrow {
  background: var(--light2);
  padding: 5px 16px;
  border-radius: 100px;
  border: 1px solid var(--border);
}
.section-header .section-sub { margin: 0 auto; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 6px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .88rem;
  font-weight: 600;
  transition: all var(--t);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: .02em;
}
.btn--primary {
  background: var(--navy);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(13,43,110,.30);
}
.btn--primary:hover {
  background: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,86,219,.35);
}
.btn--white {
  background: rgba(255,255,255,.15);
  color: var(--white);
  border: 2px solid rgba(255,255,255,.6);
  backdrop-filter: blur(4px);
}
.btn--white:hover { background: rgba(255,255,255,.25); }
.btn--lg { padding: 16px 36px; font-size: .95rem; }
.btn--outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn--outline:hover { background: var(--navy); color: var(--white); }
.btn--full { width: 100%; justify-content: center; }

/* ===== TOPBAR ===== */
.topbar {
  background: var(--navy);
  padding: 9px 0;
}
.topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar__left, .topbar__right {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: .8rem;
  color: rgba(255,255,255,.75);
}
.topbar__left a, .topbar__right a {
  color: rgba(255,255,255,.85);
  transition: var(--t);
}
.topbar__left a:hover, .topbar__right a:hover { color: var(--white); }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(13,43,110,.08);
  padding: 0;
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}
.header__logo img { height: 46px; width: auto; }
.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.header__nav a {
  padding: 8px 16px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--r);
  transition: var(--t);
}
.header__nav a:hover { color: var(--blue); background: var(--light2); }
.header__cta { margin-left: 12px; padding: 10px 22px; }
.header__burger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto; }
.header__burger span { display: block; width: 22px; height: 2px; background: var(--navy); border-radius: 2px; transition: var(--t); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #050f2e 0%, #0d2b6e 60%, #1a3a8f 100%);
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(5,15,46,.95) 0%,
    rgba(8,26,71,.8) 55%,
    rgba(8,26,71,.2) 100%
  );
}
.hero__layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 80px 0;
  width: 100%;
}
.hero__content {
  padding: 0;
}
.hero__mosaic {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 480px;
}
.hero__tile {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  flex: 1;
}
.hero__tile::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5,15,46,.75) 0%, transparent 55%);
  border-radius: 14px;
}
.hero__tile-row {
  flex: 1;
  display: flex;
  gap: 8px;
}
.hero__tile-row .hero__tile { flex: 1; }
.hero__tile--hoa {
  flex: 1.5;
  background-image: url('assets/lix-1.jpg');
}
.hero__tile--lop {
  background-image: url('assets/catalogue-4.jpg');
}
.hero__tile--acquy {
  background-image: url('assets/catalogue-1.jpg');
  background-position: 75% center;
}
.hero__tile-tag {
  position: absolute;
  bottom: 12px;
  left: 12px;
  z-index: 1;
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  background: rgba(26,86,219,.75);
  padding: 5px 12px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}
.hero__label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}
.hero__label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--cyan);
}
.hero__title {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--white);
  margin-bottom: 22px;
  letter-spacing: -.01em;
}
.hero__title span {
  color: var(--cyan);
}
.hero__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 38px;
  line-height: 1.75;
}
.hero__btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.hero__scroll span {
  display: block;
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255,255,255,.4);
  border-radius: 12px;
}
.hero__scroll span::after {
  content: '';
  display: block;
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,.7);
  border-radius: 2px;
  margin: 5px auto 0;
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot {
  0%,100% { opacity:1; transform:translateY(0); }
  50% { opacity:0; transform:translateY(12px); }
}

/* ===== FEATURES STRIP ===== */
.features {
  background: var(--white);
  box-shadow: var(--shadow);
  position: relative;
  z-index: 10;
}
.features__grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
}
.feature-box {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 36px 32px;
  border-right: 1px solid var(--border);
  transition: var(--t);
}
.feature-box:last-child { border-right: none; }
.feature-box:hover { background: var(--light); }
.feature-box__icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: var(--light2);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.feature-box h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 5px;
}
.feature-box p { font-size: .85rem; color: var(--muted); line-height: 1.6; }

/* ===== ABOUT ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about__media {
  position: relative;
}
/* Image stack layout */
.about__img-stack {
  position: relative;
  height: 460px;
}
.about__img {
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}
.about__img--main {
  width: 82%;
  height: 340px;
  position: absolute;
  top: 0;
  left: 0;
}
.about__img--sub {
  width: 58%;
  height: 220px;
  position: absolute;
  bottom: 0;
  right: 0;
  border: 4px solid var(--white);
  box-shadow: var(--shadow-md);
}
.about__exp-badge {
  position: absolute;
  top: 220px;
  right: 18%;
  background: var(--navy);
  color: var(--white);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.badge-num {
  display: block;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  color: var(--cyan);
}
.badge-txt { font-size: .82rem; color: rgba(255,255,255,.75); line-height: 1.4; margin-top: 4px; display: block; }

.about__body { padding-bottom: 24px; }
.about__body p { color: var(--muted); margin-bottom: 14px; }
.about__body strong { color: var(--text); }
.about__list {
  list-style: none;
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.about__list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  color: var(--text);
}
.tick {
  width: 22px;
  height: 22px;
  background: var(--navy);
  color: var(--white);
  border-radius: 50%;
  font-size: .65rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== PRODUCTS ===== */
.prod-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}
.prod-tab {
  padding: 12px 24px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  border-radius: 0;
  transition: var(--t);
}
.prod-tab:hover { color: var(--navy); }
.prod-tab.active {
  color: var(--navy);
  border-bottom-color: var(--navy);
}
.prod-panel { display: none; animation: fadeUp .3s ease; }
.prod-panel.active { display: block; }
@keyframes fadeUp { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

.prod-intro {
  margin-bottom: 36px;
  padding: 28px 32px;
  background: var(--navy);
  border-radius: var(--r-lg);
  color: var(--white);
}
.prod-intro h3 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.prod-intro p { color: rgba(255,255,255,.7); font-size: .93rem; }

/* Service Cards */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--t);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue);
}
.service-card__img { height: 180px; overflow: hidden; }
.service-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.service-card:hover .service-card__img img { transform: scale(1.05); }
.service-card__body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.service-card__tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--light2);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.service-card__body h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.service-card__body p { font-size: .84rem; color: var(--muted); line-height: 1.65; flex: 1; }
.service-card__models {
  font-size: .75rem;
  color: var(--blue);
  font-weight: 600;
  margin: 12px 0 14px;
  padding: 8px 12px;
  background: var(--light2);
  border-radius: var(--r);
}
.service-card__link {
  font-size: .84rem;
  font-weight: 600;
  color: var(--navy);
  transition: var(--t);
}
.service-card__link:hover { color: var(--blue); }

/* Icon Cards */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.icon-grid--6 { grid-template-columns: repeat(6, 1fr); }
.icon-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--t);
}
.icon-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--navy);
}
.icon-card__ico {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--light2);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
}
.icon-card h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .95rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.icon-card p { font-size: .83rem; color: var(--muted); line-height: 1.65; }
.icon-card--sm { padding: 24px 16px; }
.icon-card--sm .icon-card__ico { width: 52px; height: 52px; font-size: 1.8rem; margin-bottom: 10px; }
.icon-card--sm h4 { font-size: .85rem; }

/* ===== STATS BAND ===== */
.stats-band {
  background: var(--navy);
  padding: 56px 0;
}
.stats-band__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 12px 20px;
  border-right: 1px solid rgba(255,255,255,.12);
}
.stat-item:last-child { border-right: none; }
.stat-item__n {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--cyan);
  line-height: 1;
}
.stat-item__u {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--cyan);
}
.stat-item p { font-size: .82rem; color: rgba(255,255,255,.6); margin-top: 8px; font-weight: 500; letter-spacing: .04em; }

/* ===== PARTNERS ===== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.partner-card {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--t);
  background: var(--white);
}
.partner-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.partner-card__top {
  padding: 36px 20px;
  text-align: center;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .06em;
}
.partner-card__body { padding: 22px; }
.partner-card__body h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.partner-card__body p { font-size: .83rem; color: var(--muted); line-height: 1.65; margin-bottom: 14px; }
.partner-card__link { font-size: .85rem; font-weight: 600; color: var(--blue); transition: var(--t); }
.partner-card__link:hover { color: var(--navy); }

/* ===== WHY ===== */
.why__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.why__left > p { color: var(--muted); margin-bottom: 32px; }
.why__right { display: flex; flex-direction: column; gap: 0; }
.why-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.why-item:first-child { padding-top: 0; }
.why-item:last-child { border-bottom: none; }
.why-item__num {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  flex-shrink: 0;
  width: 48px;
  transition: var(--t);
}
.why-item:hover .why-item__num { color: var(--cyan); }
.why-item__body h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .98rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}
.why-item__body p { font-size: .85rem; color: var(--muted); line-height: 1.7; }

/* ===== VALUES BAND ===== */
.values-band {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 72px 0;
}
.values-band__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: center;
}
.value-divider {
  width: 1px;
  height: 100px;
  background: rgba(255,255,255,.15);
  margin: 0 40px;
}
.value-item { text-align: center; padding: 0 24px; }
.value-item__icon {
  font-size: 2.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
  margin-bottom: 16px;
}
.value-item h3 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.value-item p { font-size: .86rem; color: rgba(255,255,255,.65); line-height: 1.7; }

/* ===== CONTACT ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 72px;
  align-items: start;
}
.contact__info > p { color: var(--muted); margin: 16px 0 36px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; }
.contact-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--light);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  transition: var(--t);
}
.contact-detail:hover { border-color: var(--blue); background: var(--light2); }
.contact-detail__icon {
  font-size: 1.3rem;
  width: 46px;
  height: 46px;
  background: var(--white);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.contact-detail div { display: flex; flex-direction: column; gap: 2px; }
.contact-detail strong { font-size: .9rem; font-weight: 700; color: var(--navy); }
.contact-detail a strong { color: var(--blue); }
.contact-detail a:hover strong { color: var(--navy); }
.contact-detail span { font-size: .78rem; color: var(--muted); }

.contact__form-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.contact__form-card h3 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--border);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fg { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.fg label { font-size: .78rem; font-weight: 700; color: var(--text); letter-spacing: .04em; text-transform: uppercase; }
.fg input, .fg select, .fg textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  font-family: inherit;
  font-size: .9rem;
  color: var(--text);
  background: var(--white);
  transition: var(--t);
  outline: none;
}
.fg input::placeholder, .fg textarea::placeholder { color: #b0bcd4; }
.fg input:focus, .fg select:focus, .fg textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26,86,219,.08);
}
.fg textarea { resize: vertical; min-height: 108px; }
.form-success {
  margin-top: 14px;
  padding: 13px 18px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  border-radius: var(--r);
  font-size: .88rem;
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer { background: var(--navy-dark); }
.footer__main { padding: 64px 0 40px; }
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__logo { height: 48px; width: auto; margin-bottom: 16px; }
.footer__brand p { font-size: .85rem; color: rgba(255,255,255,.5); line-height: 1.7; margin-bottom: 6px; }
.footer__tagline { color: var(--cyan) !important; font-weight: 600 !important; font-style: italic; }
.footer__col h5 {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 18px;
}
.footer__col a, .footer__col span {
  display: block;
  font-size: .84rem;
  color: rgba(255,255,255,.48);
  margin-bottom: 10px;
  transition: var(--t);
  line-height: 1.6;
}
.footer__col a:hover { color: var(--cyan); }
.footer__bottom {
  padding: 18px 0;
  text-align: center;
  font-size: .78rem;
  color: rgba(255,255,255,.28);
}

/* ===== BACK TO TOP ===== */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--navy);
  color: var(--white);
  border-radius: 6px;
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: var(--shadow-md);
  z-index: 900;
  opacity: 0;
  transform: translateY(16px);
  transition: var(--t);
  pointer-events: none;
}
.back-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-top:hover { background: var(--blue); transform: translateY(-2px); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero__layout { grid-template-columns: 1fr; gap: 32px; }
  .hero__mosaic { height: 260px; flex-direction: row; }
  .hero__tile--hoa { flex: 1.5; }
  .hero__tile-row { flex: 1; flex-direction: column; }
  .about__grid { grid-template-columns: 1fr; }
  .about__media { max-width: 540px; }
  .about__img-stack { height: 380px; }
  .about__img--main { width: 78%; height: 280px; }
  .about__img--sub { width: 55%; height: 190px; }
  .about__exp-badge { top: 180px; right: 22%; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .icon-grid { grid-template-columns: repeat(2, 1fr); }
  .icon-grid--6 { grid-template-columns: repeat(3, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid { grid-template-columns: 1fr; gap: 40px; }
  .values-band__grid { grid-template-columns: 1fr; text-align: center; }
  .value-divider { width: 80%; height: 1px; margin: 32px auto; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .contact__grid { grid-template-columns: 1fr; gap: 48px; }
  .stats-band__grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-right: 1px solid rgba(255,255,255,.12); border-top: 1px solid rgba(255,255,255,.08); }
  .stat-item:nth-child(4) { border-right: none; border-top: 1px solid rgba(255,255,255,.08); }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .topbar__right { display: none; }
  .header__nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    background: var(--white);
    gap: 6px;
    transform: translateX(100%);
    transition: transform .3s ease;
    z-index: 999;
    box-shadow: var(--shadow-lg);
  }
  .header__nav.open { transform: translateX(0); }
  .header__nav a { font-size: 1.15rem; padding: 14px 28px; width: 100%; text-align: center; color: var(--navy) !important; }
  .header__cta { display: none; }
  .header__burger { display: flex; }
  .features__grid { grid-template-columns: 1fr; }
  .feature-box { border-right: none; border-bottom: 1px solid var(--border); }
  .feature-box:last-child { border-bottom: none; }
  .service-grid { grid-template-columns: 1fr; }
  .icon-grid { grid-template-columns: 1fr 1fr; }
  .icon-grid--6 { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact__form-card { padding: 28px 20px; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__title { font-size: 2.4rem; }
  .hero__mosaic { display: none; }
  .prod-tabs { overflow-x: auto; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2rem; }
  .partner-grid { grid-template-columns: 1fr; }
  .icon-grid--6 { grid-template-columns: repeat(3, 1fr); }
}