/* ===== RESET & TOKENS ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #00399e;
  --primary-dark: #002a78;
  --accent: #bf2e2e;
  --accent-dark: #9c2424;
  --bg: #ffffff;
  --gray-bg: #f5f7fa;
  --dark: #111827;
  --text: #111827;
  --muted: #6b7280;

  --radius: 20px;
  --radius-btn: 0;
  --container: 1440px;
  --content: 1320px;
  --section-py: 120px;

  --shadow-soft: 0 4px 24px rgba(17, 24, 39, 0.06);
  --shadow-soft-lg: 0 16px 48px rgba(17, 24, 39, 0.1);

  --font-heading: 'Be Vietnam Pro', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 800; }

.wrap-1440 {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-1320 {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 24px;
}

.text-accent { color: var(--accent); }

/* ===== SCROLL REVEAL ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2px;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn--accent { background: var(--accent); color: #fff; box-shadow: var(--shadow-soft); }
.btn--accent:hover { background: var(--accent-dark); }
.btn--primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-soft); }
.btn--primary:hover { background: var(--primary-dark); }
.btn--outline-light { border-color: rgba(255,255,255,.5); color: #fff; }
.btn--outline-light:hover { background: rgba(255,255,255,.15); border-color: #fff; }
.btn--outline-dark { border-color: var(--primary); color: var(--primary); }
.btn--outline-dark:hover { background: var(--primary); color: #fff; }

/* ===== SECTION LABEL / HEAD ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 800;
  font-family: var(--font-heading);
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.section-label--light { color: #fff; }
.section-label--center { display: flex; justify-content: center; width: 100%; margin-bottom: 12px; }

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 14px;
}

.section-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s;
}
.section-link:hover { gap: 10px; }
.section-link--light { color: #fff; }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background .3s ease, box-shadow .3s ease;
}
.header.is-solid {
  background: #fff;
  box-shadow: var(--shadow-soft);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 80px;
}
.logo__mark-inner { fill: #fff; transition: fill .3s ease; }
.header.is-solid .logo__mark-inner { fill: var(--primary); }

.logo__text {
  display: flex;
  flex-direction: column;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.15;
  color: #fff;
  transition: color .3s ease;
}
.header.is-solid .logo__text { color: var(--primary); }
.logo__text small {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1.5px;
}

.nav { display: flex; align-items: center; gap: 32px; }
.nav a {
  font-size: 14px;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.header.is-solid .nav a { color: var(--text); }
.nav a:hover, .nav a.active { color: var(--accent); border-bottom-color: var(--accent); }
.header.is-solid .nav a:hover, .header.is-solid .nav a.active { color: var(--accent); }

/* ---- Nav item: mega menu / dropdown ---- */
.nav-item { position: relative; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.header.is-solid .nav-link { color: var(--text); }
.nav-item.is-open .nav-link,
.nav-link:hover { color: var(--accent); }
.nav-link__chevron { transition: transform .25s ease; }
.nav-item.is-open .nav-link__chevron { transform: rotate(180deg); }

.mega-menu, .dropdown-menu {
  position: absolute;
  top: calc(100% + 22px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  /* border-radius: var(--radius); */
  box-shadow: var(--shadow-soft-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
  z-index: 50;
}
/* Invisible bridge spanning the visual gap above the panel — without it,
   the pointer crosses a dead zone between the trigger and the panel and
   :hover is lost before the panel is reached, closing it prematurely. */
.mega-menu::before, .dropdown-menu::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: 22px;
}
.nav-item:hover .mega-menu,
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .mega-menu,
.nav-item:focus-within .dropdown-menu,
.nav-item.is-open .mega-menu,
.nav-item.is-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-menu {
  left: 0;
  transform: translateY(8px);
  display: grid;
  grid-template-columns: repeat(3, 176px) 200px;
  gap: 6px;
  padding: 28px;
}
.nav-item:hover .mega-menu,
.nav-item:focus-within .mega-menu,
.nav-item.is-open .mega-menu { transform: translateY(0); }
.mega-menu__col h4 {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}
.mega-menu__col a {
  display: block;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  padding: 7px 0;
  border-bottom: none;
  transition: color .2s;
}
.mega-menu__col a:hover { color: var(--accent); }
.mega-menu__promo {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  min-height: 150px;
  display: block;
}
.mega-menu__promo img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.mega-menu__promo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0,57,158,.88) 10%, rgba(0,57,158,.15) 80%);
}
.mega-menu__promo span {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  height: 100%;
  padding: 16px;
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.35;
}

.dropdown-menu {
  left: 0;
  transform: translateY(8px);
  min-width: 230px;
  padding: 12px;
}
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu,
.nav-item.is-open .dropdown-menu { transform: translateY(0); }
.dropdown-menu a,
.dropdown-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.dropdown-menu a:hover,
.dropdown-menu button:hover { background: var(--gray-bg); color: var(--primary); }

.header__actions { display: flex; align-items: center; gap: 24px; }
.phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  transition: color .3s ease;
}
.header.is-solid .phone { color: var(--primary); }

/* ---- Language switch ---- */
.lang-switch { position: relative; }
.lang-switch__toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: color .3s ease;
}
.header.is-solid .lang-switch__toggle { color: var(--text); }
.lang-switch.is-open .lang-switch__toggle,
.lang-switch__toggle:hover { color: var(--accent); }
.dropdown-menu--lang { left: 50%; min-width: 150px; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  background: none;
  border: none;
  cursor: pointer;
}
.burger span {
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: background .3s ease;
}
.header.is-solid .burger span { background: var(--text); }

/* ===== MOBILE MENU (slide-in panel) ===== */
.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 190;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
}
.mobile-menu-backdrop.is-open { opacity: 1; visibility: visible; }

.mobile-menu {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 100%;
  max-width: 420px;
  background: var(--dark);
  color: #fff;
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .4s cubic-bezier(.22,1,.36,1);
  overflow-y: auto;
}
.mobile-menu.is-open { transform: translateX(0); }

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.logo--mobile img { width: 64px; height: auto; }
.mobile-menu__close {
  background: rgba(255,255,255,.08);
  border: none;
  color: #fff;
  cursor: pointer;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
  flex-shrink: 0;
}
.mobile-menu__close:hover { background: var(--accent); }

.mobile-menu__nav { padding: 8px 24px 0; }
.mobile-menu__item { border-bottom: 1px solid rgba(255,255,255,.08); }
.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  background: none;
  border: none;
  color: #fff;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .4px;
  text-transform: uppercase;
  padding: 17px 0;
  cursor: pointer;
}
.mobile-menu__link.active { color: var(--accent); }
.mobile-menu__chevron {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s ease, background .2s ease;
  flex-shrink: 0;
}
.mobile-menu__item.is-open .mobile-menu__chevron { transform: rotate(90deg); background: var(--accent); }

.mobile-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.mobile-menu__item.is-open .mobile-submenu { max-height: 700px; }
.mobile-submenu__group { padding: 2px 0 16px; }
.mobile-submenu__group h5 {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: rgba(255,255,255,.45);
  margin: 10px 0 6px;
}
.mobile-submenu a {
  display: block;
  padding: 8px 0;
  font-size: 13.5px;
  color: rgba(255,255,255,.72);
}
.mobile-submenu a:hover { color: #fff; }

.mobile-menu__footer {
  margin-top: auto;
  padding: 22px 24px 32px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.mobile-menu__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.mobile-menu__phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}
.mobile-menu__lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,255,255,.4);
}
.mobile-menu__lang button {
  background: none;
  border: none;
  color: rgba(255,255,255,.5);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  padding: 4px;
}
.mobile-menu__lang button.is-active { color: #fff; }

.mobile-menu__footer .btn { width: 100%; justify-content: center; margin-bottom: 22px; }

.mobile-menu__socials { display: flex; gap: 10px; }
.mobile-menu__socials a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  transition: background .2s;
}
.mobile-menu__socials a:hover { background: var(--accent); }

body.no-scroll { overflow: hidden; }

@media (min-width: 981px) {
  .mobile-menu, .mobile-menu-backdrop { display: none; }
}

/* ===== HERO FULL SCREEN CAROUSEL ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  width: 100%;
  overflow: hidden;
}
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.1s ease;
  will-change: opacity;
  transform: translateZ(0);
}
.hero__slide.is-active { opacity: 1; pointer-events: auto; z-index: 1; }

.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(17,24,39,.92) 0%, rgba(17,24,39,.6) 40%, rgba(17,24,39,.15) 68%, rgba(17,24,39,0) 100%),
    linear-gradient(0deg, rgba(17,24,39,.55) 0%, rgba(17,24,39,0) 35%);
}

.hero__content-wrap {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
}
.hero__content { max-width: 640px; color: #fff; padding-top: 84px; }

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 10px 16px 10px 14px;
  background: rgba(255,255,255,.08);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
}

.hero__content h1 {
  font-size: clamp(32px, 4.4vw, 56px);
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 22px;
}

.hero__content p {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  max-width: 460px;
  margin-bottom: 34px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 30px;
  margin-bottom: 38px;
}
.stat strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
}
.stat small { font-size: 12px; color: rgba(255,255,255,.7); }

.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.92);
  color: var(--primary);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  transition: background .2s, transform .2s;
}
.hero__arrow:hover { background: #fff; transform: translateY(-50%) scale(1.06); }
.hero__arrow--prev { left: 40px; }
.hero__arrow--next { right: 40px; }

.hero__dots {
  position: absolute;
  bottom: 44px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 5;
}
.hero__dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: all .25s ease;
}
.hero__dots span.is-active {
  background: var(--accent);
  width: 28px;
  border-radius: 5px;
}

/* ===== ABOUT ===== */
.about { padding: var(--section-py) 0; }
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.about__text h2 {
  font-size: clamp(26px, 3vw, 36px);
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 22px;
}
.about__text p {
  color: var(--muted);
  margin-bottom: 32px;
  max-width: 480px;
}

.about__gallery {
  position: relative;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 18px;
  height: 440px;
}
.gallery__item { border-radius: var(--radius); overflow: hidden; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.gallery__item:hover img { transform: scale(1.05); }
.gallery__item--main { grid-row: 1 / 3; }
.gallery__item--top { grid-column: 2; grid-row: 1; }
.gallery__item--bottom { grid-column: 2; grid-row: 2; }

.gallery__block {
  position: absolute;
  left: -18px;
  bottom: -18px;
  width: 100px;
  height: 100px;
  background: var(--primary);
  border-radius: var(--radius);
  z-index: 0;
}
.gallery__dots {
  position: absolute;
  right: 26%;
  top: -18px;
  width: 76px;
  height: 76px;
  background-image: radial-gradient(var(--primary) 2px, transparent 2px);
  background-size: 11px 11px;
  opacity: .5;
  z-index: 0;
}

/* ===== FIELDS (LINH VUC) ===== */
.fields { background: var(--primary); padding: var(--section-py) 0; }
.fields__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.field-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  height: 280px;
  display: block;
}
.field-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.field-card:hover img { transform: scale(1.1); }
.field-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17,24,39,0) 35%, rgba(17,24,39,.92) 100%);
}
.field-card__body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 22px;
  color: #fff;
}
.field-card__body h3 {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 6px;
}
.field-card__body p {
  font-size: 12.5px;
  color: rgba(255,255,255,.75);
  margin-bottom: 12px;
}
.field-card__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  font-size: 13px;
  transition: transform .2s;
}
.field-card:hover .field-card__arrow { transform: translateX(4px); }

/* ===== PRODUCTS ===== */
.products { padding: var(--section-py) 0; }
.products__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.product-card {
  display: block;
  border: 1px solid #eef0f5;
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.product-card:hover {
  box-shadow: var(--shadow-soft-lg);
  transform: translateY(-6px);
}
.product-card__img { height: 190px; overflow: hidden; }
.product-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.product-card:hover .product-card__img img { transform: scale(1.08); }
.product-card__body { padding: 20px; position: relative; }
.product-card__body h3 {
  font-size: 15px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}
.product-card__body p {
  font-size: 12.5px;
  color: var(--muted);
  padding-right: 30px;
}
.product-card__arrow {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* ===== PROJECTS — 4 CARD LON ===== */
.projects { background: var(--gray-bg); padding: var(--section-py) 0; }
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 260px;
  gap: 22px;
}
.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  display: block;
  grid-column: span 1;
  grid-row: span 1;
}
.project-card--lg { grid-column: span 2; grid-row: span 1; }
.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.project-card:hover img { transform: scale(1.06); }
.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17,24,39,0) 40%, rgba(17,24,39,.92) 100%);
}
.project-card__body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 24px;
  color: #fff;
}
.project-card__year {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--accent);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.project-card__body h3 { font-size: 18px; font-weight: 800; margin-bottom: 4px; }
.project-card__body span:not(.project-card__year) { font-size: 12.5px; color: rgba(255,255,255,.75); }

/* ===== WHY CHOOSE ===== */
.why { padding: var(--section-py) 0; text-align: center; background: var(--gray-bg); }
.why__grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  padding: 34px 20px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-soft);
  transition: transform .3s ease, box-shadow .3s ease;
}
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft-lg); }
.why-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(0,57,158,.08);
  color: var(--primary);
}
.why-card h3 {
  font-size: 14.5px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.why-card p { font-size: 13px; color: var(--muted); }

/* ===== PARTNERS (MARQUEE) ===== */
.partners { padding: 80px 0; background: #fff; text-align: center; }
.marquee-wrap {
  margin-top: 30px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: 60px;
  animation: marquee 26s linear infinite;
}
.marquee-wrap:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.partner-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 1px;
  color: var(--muted);
  filter: grayscale(1);
  opacity: .55;
  white-space: nowrap;
  transition: color .3s ease, opacity .3s ease, filter .3s ease;
}
.partner-logo:hover {
  color: var(--primary);
  filter: grayscale(0);
  opacity: 1;
}

/* ===== NEWS ===== */
.news { padding: var(--section-py) 0; }
.news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border: 1px solid #eef0f5;
  border-radius: var(--radius);
  overflow: hidden;
  display: block;
  transition: box-shadow .3s, transform .3s;
}
.news-card:hover { box-shadow: var(--shadow-soft-lg); transform: translateY(-6px); }
.news-card__img { position: relative; height: 190px; overflow: hidden; }
.news-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-card__img img { transform: scale(1.08); }
.news-card__date {
  position: absolute;
  top: 0; left: 0;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  padding: 10px 16px;
  border-bottom-right-radius: 12px;
  text-align: center;
  line-height: 1.1;
}
.news-card__date small { display: block; font-size: 10px; font-weight: 600; font-family: var(--font-body); }
.news-card h3 {
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-body);
  color: var(--text);
  padding: 20px 20px 10px;
  min-height: 76px;
}
.news-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 20px 22px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent);
}

/* ===== CTA — FULL SECTION, 2 COLUMN 50/50 ===== */
.cta {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 440px;
  background: var(--primary);
  overflow: hidden;
}
.cta__text {
  position: relative;
  z-index: 2;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 70px clamp(24px, 6vw, 100px);
}
.cta__text h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.25;
  margin-bottom: 20px;
}
.cta__text p {
  font-size: 15px;
  color: rgba(255,255,255,.82);
  max-width: 420px;
  margin-bottom: 30px;
}
.cta__text .btn { align-self: flex-start; }

.cta__media { position: relative; overflow: hidden; }
.cta__media-accent {
  position: absolute;
  inset: 0;
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0% 100%);
  background: var(--accent);
}
.cta__media-image {
  position: absolute;
  inset: 0;
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 4% 100%);
}
.cta__media-image img { width: 100%; height: 100%; object-fit: cover; }
.cta__media-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,57,158,.55), rgba(17,24,39,.25));
}

/* ===== FOOTER ===== */
.footer { background: var(--dark); color: rgba(255,255,255,.72); padding: 80px 0 0; }
.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.logo--light .logo__text { color: #fff; }
.footer__col--brand p { font-size: 13.5px; margin: 18px 0 22px; max-width: 300px; }
.footer__socials { display: flex; gap: 10px; }
.footer__socials a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  transition: background .2s;
}
.footer__socials a:hover { background: var(--accent); }

.footer__col h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer__col a {
  display: flex;
  font-size: 13.5px;
  margin-bottom: 13px;
  transition: color .2s;
}
.footer__col a:hover { color: #fff; }
.footer__contact { font-size: 13.5px; margin-bottom: 14px; }

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-size: 12.5px;
  flex-wrap: wrap;
  gap: 10px;
}
.footer__bottom-inner div { display: flex; gap: 24px; }

/* ===== INTRO (Giới thiệu — Về chúng tôi) ===== */
.intro { padding: var(--section-py) 0; }
.intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.intro__stat-big {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 18px 0 16px;
}
.intro__stat-big strong {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.intro__stat-big span {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--dark);
  letter-spacing: .5px;
}
.intro__text h2 {
  font-size: clamp(24px, 3vw, 32px);
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 18px;
}
.intro__text p {
  color: var(--muted);
  margin-bottom: 14px;
  max-width: 480px;
}
.intro__text .btn { margin-top: 12px; }

.intro__gallery { position: relative; }
.intro__gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.intro__gallery-item { border-radius: var(--radius); overflow: hidden; height: 200px; }
.intro__gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.intro__gallery-item:hover img { transform: scale(1.06); }

/* ===== STATS BAR ===== */
.stats-bar { background: var(--gray-bg); padding: 44px 0; }
.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stats-bar__item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-left: 1px solid #e3e7ee;
}
.stats-bar__item:first-child { border-left: none; }
.stats-bar__icon {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
}
.stats-bar__item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
}
.stats-bar__item small { font-size: 12px; color: var(--muted); }

/* ===== TIMELINE (Hành trình phát triển) ===== */
.timeline { padding: var(--section-py) 0; }
.timeline__row {
  position: relative;
  display: flex;
  justify-content: space-between;
  margin-top: 50px;
}
.timeline__row::before {
  content: '';
  position: absolute;
  top: 26px;
  left: 0; right: 0;
  height: 2px;
  background: #e3e7ee;
  z-index: 0;
}
.timeline__item {
  position: relative;
  z-index: 1;
  flex: 1;
  text-align: center;
  padding: 0 10px;
}
.timeline__icon {
  width: 52px; height: 52px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.timeline__item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}
.timeline__item h4 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .3px;
  color: var(--dark);
  margin-bottom: 8px;
}
.timeline__item p { font-size: 11.5px; color: var(--muted); line-height: 1.5; }

/* ===== MISSION (Tầm nhìn / Sứ mệnh / Giá trị cốt lõi) ===== */
.mission { background: var(--gray-bg); padding: 50px 0; }
.mission__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.mission__col { display: flex; gap: 16px; align-items: flex-start; }
.mission__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
}
.mission__col h4 {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: 6px;
}
.mission__col p { font-size: 13px; color: var(--muted); line-height: 1.6; }
.mission__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
  margin-top: 4px;
}
.mission__values span {
  font-size: 12.5px;
  color: var(--muted);
  position: relative;
  padding-left: 12px;
}
.mission__values span::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ===== ORG CHART + MEMBER UNITS ===== */
.org { padding: var(--section-py) 0; }
.org__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: start;
}
.org-tree { margin-top: 26px; display: flex; flex-direction: column; align-items: center; }
.org-node {
  background: var(--primary);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 8px;
  white-space: nowrap;
}
.org-node--accent { background: var(--accent); }
.org-node--sm {
  background: #fff;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  font-size: 11px;
  padding: 8px 10px;
  text-align: center;
  width: 100%;
}
.org-tree__line { width: 2px; height: 20px; background: #c7cdd6; }
.org-tree__branches {
  display: flex;
  gap: 14px;
  width: 100%;
  justify-content: space-between;
  border-top: 2px solid #c7cdd6;
  padding-top: 20px;
  margin-top: 0;
}
.org-branch {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.org-branch::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 20px;
  background: #c7cdd6;
}
.org-branch__list {
  list-style: none;
  margin-top: 10px;
  font-size: 10.5px;
  color: var(--muted);
  line-height: 2;
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 22px;
}
.member-card {
  display: block;
  border: 1px solid #eef0f5;
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.member-card:hover { box-shadow: var(--shadow-soft-lg); transform: translateY(-4px); }
.member-card__img { height: 110px; overflow: hidden; }
.member-card__img img { width: 100%; height: 100%; object-fit: cover; }
.member-card__body { padding: 14px; }
.member-card__body h4 {
  font-size: 12.5px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 6px;
}
.member-card__body p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 8px;
  min-height: 48px;
}
.member-card__link {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== CULTURE (Văn hóa Nhân Luật) ===== */
.culture { padding: var(--section-py) 0; background: var(--gray-bg); }
.culture__top {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 50px;
}
.culture__text p { color: var(--muted); margin: 18px 0 26px; }
.culture__gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.culture__gallery-item { border-radius: var(--radius); overflow: hidden; height: 200px; }
.culture__gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.culture__gallery-item:hover img { transform: scale(1.06); }

.culture__values {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  padding-top: 36px;
  border-top: 1px solid #e3e7ee;
}
.culture__value { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; }
.culture__value-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.culture__value h4 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: 4px;
}
.culture__value p { font-size: 11px; color: var(--muted); line-height: 1.4; }

/* ===== CERTS (Chứng nhận & Đối tác chiến lược) ===== */
.certs { padding: 60px 0; }
.certs__wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 26px auto 0;
  max-width: 1320px;
  padding: 0 24px;
}
.certs__viewport { flex: 1; overflow: hidden; }
.certs__track {
  display: flex;
  gap: 20px;
  transition: transform .4s ease;
}
.certs__badge, .certs__logo {
  flex: 0 0 150px;
  height: 90px;
  border: 1px solid #eef0f5;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  color: var(--primary);
  padding: 10px;
}
.certs__badge {
  flex: 0 0 90px;
  width: 90px;
  border-radius: 50%;
  font-size: 11px;
  line-height: 1.3;
}
.certs__arrow {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid #e3e7ee;
  background: #fff;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s;
}
.certs__arrow:hover { background: var(--primary); color: #fff; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1180px) {
  :root { --section-py: 90px; }
  .fields__grid { grid-template-columns: repeat(3, 1fr); }
  .products__grid { grid-template-columns: repeat(3, 1fr); }
  .why__grid { grid-template-columns: repeat(3, 1fr); }
  .projects__grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 240px; }
  .project-card--lg { grid-column: span 2; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .intro__inner { gap: 40px; }
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .stats-bar__item:nth-child(2n+1) { border-left: none; }
  .mission__grid { grid-template-columns: 1fr; gap: 30px; }
  .org__grid { grid-template-columns: 1fr; gap: 50px; }
  .culture__values { grid-template-columns: repeat(3, 1fr); row-gap: 24px; }
}

@media (max-width: 980px) {
  .nav, .header__actions { display: none; }
  .burger { display: flex; }
  .about__inner { grid-template-columns: 1fr; }
  .news__grid { grid-template-columns: 1fr 1fr; }
  .cta { grid-template-columns: 1fr; }
  .cta__media { min-height: 280px; }
  .hero__stats { grid-template-columns: repeat(2, auto); }
  .intro__inner { grid-template-columns: 1fr; }
  .intro__gallery { order: -1; }
  .timeline__row { flex-wrap: wrap; gap: 30px; justify-content: center; }
  .timeline__row::before { display: none; }
  .timeline__item { flex: 0 0 calc(33.333% - 20px); }
  .culture__top { grid-template-columns: 1fr; }
  .culture__gallery { order: -1; }
}

@media (max-width: 720px) {
  :root { --section-py: 64px; }
  .fields__grid { grid-template-columns: repeat(2, 1fr); }
  .products__grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .news__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; grid-auto-rows: 240px; }
  .project-card--lg { grid-column: span 1; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .about__gallery { height: 340px; }
  .hero__arrow { width: 40px; height: 40px; }
  .hero__arrow--prev { left: 16px; }
  .hero__arrow--next { right: 16px; }
  .intro__gallery-grid { grid-template-columns: 1fr 1fr; }
  .stats-bar__grid { grid-template-columns: 1fr 1fr; }
  .timeline__item { flex: 0 0 calc(50% - 15px); }
  .org-tree__branches { flex-wrap: wrap; gap: 24px; }
  .org-branch { flex: 0 0 calc(50% - 12px); }
  .member-grid { grid-template-columns: 1fr; }
  .culture__gallery { grid-template-columns: repeat(2, 1fr); }
  .culture__values { grid-template-columns: repeat(2, 1fr); }
}