/* HaDa JSC — haidangtelecom.net — shared stylesheet v4 (premium visual pass) */
:root {
  --navy: #11273e;
  --navy-2: #1b3a59;
  --navy-3: #0c1c2e;
  --orange: #c25c34;
  --orange-2: #d96f43;
  --orange-soft: #f9ece5;
  --text: #26323f;
  --muted: #5c6b7c;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1140px;
  --shadow-sm: 0 1px 2px rgba(17, 39, 62, 0.05), 0 3px 10px rgba(17, 39, 62, 0.06);
  --shadow-md: 0 2px 6px rgba(17, 39, 62, 0.06), 0 14px 30px rgba(17, 39, 62, 0.11);
  --shadow-lg: 0 4px 10px rgba(17, 39, 62, 0.08), 0 28px 64px rgba(17, 39, 62, 0.18);
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 84px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}

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

:focus-visible { outline: 3px solid var(--orange-2); outline-offset: 2px; border-radius: 4px; }

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

a { color: var(--orange); text-decoration: none; transition: color 0.18s ease; }
a:hover { color: var(--orange-2); text-decoration: underline; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.015em; }

.container > p { max-width: 65ch; }

/* ---------- Header ---------- */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.25s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(17, 39, 62, 0.12); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 1.25rem;
  max-width: var(--maxw);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 0.85rem; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand img { height: 48px; width: auto; }
.brand-name { display: flex; align-items: center; line-height: 1.2; }
.brand-name strong { color: var(--navy); font-size: 1.25rem; font-weight: 800; letter-spacing: 0.02em; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.site-nav ul { display: flex; gap: 0.15rem; list-style: none; }
.site-nav a {
  display: block;
  padding: 0.55rem 0.95rem;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.94rem;
  border-radius: 8px;
  position: relative;
  transition: color 0.18s ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0.95rem;
  right: 0.95rem;
  bottom: 0.25rem;
  height: 2.5px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.site-nav a:hover { color: var(--orange); text-decoration: none; }
.site-nav a:hover::after { transform: scaleX(1); }
.site-nav a.active { color: var(--orange); }
.site-nav a.active::after { transform: scaleX(1); }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  position: relative;
  background:
    radial-gradient(ellipse 70% 100% at 80% 0%, rgba(194, 92, 52, 0.20), transparent 60%),
    linear-gradient(150deg, var(--navy-3) 0%, var(--navy) 60%, var(--navy-2) 100%);
  color: #fff;
  padding: 3.6rem 1.25rem 4.4rem;
  text-align: center;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1.6px);
  background-size: 26px 26px;
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1.55rem;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--orange-2), var(--orange));
  transform: translateX(-50%);
}
.page-hero h1 { position: relative; font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }
.page-hero p { position: relative; color: #b9c8da; margin-top: 0.6rem; max-width: 720px; margin-left: auto; margin-right: auto; }
.page-hero .crumb {
  position: relative;
  display: inline-block;
  color: #f0a17b;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.6rem;
}
@media (prefers-reduced-motion: no-preference) {
  .page-hero h1, .page-hero p, .page-hero .crumb { animation: rise-in 0.6s cubic-bezier(0.22, 0.8, 0.3, 1) both; }
  .page-hero p { animation-delay: 0.1s; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.7rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.96rem;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn::after {
  content: "→";
  display: inline-block;
  font-weight: 700;
  transition: transform 0.22s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:hover::after { transform: translateX(4px); }
.btn-primary {
  background: linear-gradient(135deg, var(--orange-2), var(--orange));
  color: #fff;
  box-shadow: 0 6px 16px rgba(194, 92, 52, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-primary:hover { color: #fff; box-shadow: 0 12px 26px rgba(194, 92, 52, 0.48), inset 0 1px 0 rgba(255, 255, 255, 0.22); }
.btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); color: #fff; border-color: #fff; }
.btn-navy { background: var(--navy); color: #fff; box-shadow: 0 6px 16px rgba(17, 39, 62, 0.28); }
.btn-navy:hover { background: var(--navy-2); color: #fff; box-shadow: 0 12px 26px rgba(17, 39, 62, 0.34); }

/* ---------- Sections ---------- */
.section { padding: 5rem 0; }
.section.alt { background: var(--bg-alt); }
.section-eyebrow {
  display: block;
  text-align: center;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}
.section-eyebrow::before, .section-eyebrow::after {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--orange));
  margin: 0 0.7rem 0.12rem 0;
}
.section-eyebrow::after { background: linear-gradient(90deg, var(--orange), transparent); margin: 0 0 0.12rem 0.7rem; }
.section-title {
  text-align: center;
  color: var(--navy);
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.7rem;
  text-wrap: balance;
}
.section-sub { text-align: center; color: var(--muted); max-width: 65ch; margin: 0 auto 2.8rem; }

/* curved separators between sections */
.wave-sep { line-height: 0; display: block; }
.wave-sep svg { display: block; width: 100%; height: 64px; }
.wave-sep.to-alt { background: var(--bg); }
.wave-sep.to-alt svg path { fill: var(--bg-alt); }
.wave-sep.to-white { background: var(--bg-alt); }
.wave-sep.to-white svg path { fill: var(--bg); }
.wave-sep + .section { padding-top: 3.6rem; }

h2.inline-title {
  color: var(--navy);
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  font-weight: 800;
  margin: 2.6rem 0 1.1rem;
  padding-left: 0.95rem;
  border-left: 4px solid var(--orange);
}
h2.inline-title:first-child { margin-top: 0; }
h3 { color: var(--navy); margin: 1.4rem 0 0.5rem; font-weight: 700; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

a.card { color: inherit; text-decoration: none; }
a.card:hover { text-decoration: none; color: inherit; }
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange-2), var(--orange) 55%, var(--navy-2));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.32s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #cfd9e6; }
.card:hover::before { transform: scaleX(1); }
.card h3 { margin-top: 0; font-size: 1.07rem; }
.card p { color: var(--muted); font-size: 0.93rem; }
.card p + p { margin-top: 0.6rem; }

.svg-icon, .icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--orange-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.icon { font-size: 1.5rem; }
.svg-icon svg { width: 28px; height: 28px; stroke: var(--orange); fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.card:hover .svg-icon { background: linear-gradient(135deg, var(--orange-2), var(--orange)); }
.card:hover .svg-icon svg { stroke: #fff; }
.svg-icon, .svg-icon svg { transition: background 0.22s ease, stroke 0.22s ease; }

/* service cards with photo headers (index) */
.svc-card { padding: 0; display: flex; flex-direction: column; overflow: visible !important; }
.svc-thumb { position: relative; height: 220px; overflow: hidden; }
.svc-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s cubic-bezier(0.22, 0.8, 0.3, 1); }
.svc-card:hover .svc-thumb img { transform: scale(1.07); }
.svc-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17, 39, 62, 0.42), transparent 55%);
  pointer-events: none;
}
.svc-icon-wrap {
  position: relative;
  height: 0;
  overflow: visible;
  z-index: 2;
}
.svc-card .svg-icon {
  position: absolute;
  left: 1.4rem;
  top: -30px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(17, 39, 62, 0.22);
  border: 1px solid var(--border);
}
.svc-card:hover .svg-icon { background: linear-gradient(135deg, var(--orange-2), var(--orange)); border-color: transparent; }
.svc-card:hover .svg-icon svg { stroke: #fff; }
.svc-body { padding: 2.6rem 1.6rem 2.2rem; }
.svc-body h3 { margin-top: 0; }


/* ---------- Lists ---------- */
.checklist { list-style: none; }
.checklist li { padding: 0.4rem 0 0.4rem 2rem; position: relative; max-width: 72ch; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background: var(--orange-soft);
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.98rem;
  width: 9px;
  height: 5.5px;
  border-left: 2.2px solid var(--orange);
  border-bottom: 2.2px solid var(--orange);
  transform: rotate(-45deg);
}

ul.plain { padding-left: 1.4rem; }
ul.plain li { margin: 0.35rem 0; }
ul.plain li::marker { color: var(--orange); }

/* ---------- Figures ---------- */
figure { margin: 1.8rem auto; max-width: 820px; text-align: center; }
figure img {
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 0.6rem;
  box-shadow: var(--shadow-md);
}
figcaption { color: var(--muted); font-size: 0.87rem; margin-top: 0.7rem; font-style: italic; }

/* ---------- Partner logos ---------- */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  justify-content: center;
  align-items: stretch;
}
.logo-strip img {
  height: 64px;
  width: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.72;
  transition: filter 0.25s ease, opacity 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.logo-strip img:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ---------- Project cards (index) ---------- */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.project-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.4rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--navy-2), var(--navy));
}
.project-card::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 58, 89, 0.08), transparent 70%);
  pointer-events: none;
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.project-card.invest::before { background: linear-gradient(90deg, var(--orange-2), var(--orange)); }
.project-card.invest::after { background: radial-gradient(circle, rgba(194, 92, 52, 0.12), transparent 70%); }
.project-card.ongoing::before { background: linear-gradient(90deg, #43a047, #2e7d32); }
.project-card h3 { margin: 0; font-size: 1.05rem; }
.project-card .loc { color: var(--muted); font-size: 0.88rem; }
.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: 999px;
  padding: 0.22rem 0.8rem;
  text-transform: uppercase;
}
.badge-invest { background: var(--orange-soft); color: var(--orange); }
.badge-sub { background: #e8eef5; color: var(--navy-2); }
.badge-ongoing { background: #e6f3e7; color: #2e7d32; }

.group-title {
  color: var(--navy);
  font-size: 1.25rem;
  font-weight: 800;
  margin: 2.6rem 0 1.2rem;
  padding-left: 0.85rem;
  border-left: 4px solid var(--orange);
}
.group-title:first-child { margin-top: 0; }

/* ---------- Contact ---------- */
.contact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  box-shadow: var(--shadow-md);
}
.contact-card dt {
  font-weight: 700;
  color: var(--orange);
  margin-top: 1.1rem;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.contact-card dt::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--orange-2), var(--orange));
  transform: rotate(45deg);
}
.contact-card dt:first-child { margin-top: 0; }
.contact-card dd { margin: 0.15rem 0 0 1.18rem; color: var(--text); }
.contact-card dd a { color: var(--navy); }
.contact-card dd a:hover { color: var(--orange); }

.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  line-height: 0;
}
.map-wrap iframe { width: 100%; height: 420px; border: 0; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  background:
    radial-gradient(ellipse 70% 120% at 20% 0%, rgba(194, 92, 52, 0.22), transparent 55%),
    linear-gradient(135deg, var(--navy-3), var(--navy) 60%, var(--navy-2));
  color: #fff;
  text-align: center;
  padding: 4rem 1.25rem;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1.6px);
  background-size: 26px 26px;
  pointer-events: none;
}
.cta-band::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--orange) 35%, var(--orange-2) 65%, transparent);
}
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(1.4rem, 2.8vw, 1.85rem); font-weight: 800; margin-bottom: 0.6rem; letter-spacing: -0.02em; text-wrap: balance; }
.cta-band p { color: #b9c8da; margin-bottom: 1.6rem; max-width: 60ch; margin-left: auto; margin-right: auto; }

/* ---------- Table ---------- */
.info-table { width: 100%; border-collapse: collapse; margin: 1rem 0; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }
.info-table th, .info-table td { border: 1px solid var(--border); padding: 0.7rem 0.95rem; text-align: left; vertical-align: top; }
.info-table th { background: var(--bg-alt); color: var(--navy); width: 30%; font-weight: 700; }

/* ---------- Footer (white, navy text, orange top border — per owner) ---------- */
.site-footer {
  background: #fff;
  color: var(--text);
  border-top: 3px solid var(--orange);
  padding: 3.4rem 1.25rem 1.4rem;
  font-size: 0.92rem;
}
.footer-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(420px, 1.5fr) minmax(140px, 0.52fr) minmax(280px, 0.98fr);
  column-gap: clamp(2.8rem, 3.7vw, 3.7rem);
  row-gap: 2.2rem;
  align-items: start;
}
.footer-brand-head {
  display: grid;
  grid-template-columns: 84px max-content;
  align-items: start;
  gap: 0.22rem;
  margin-bottom: 0.9rem;
}
.footer-brand-head img { height: 82px; width: auto; justify-self: start; }
.footer-brand-head h4 {
  margin: 0;
  line-height: 1.24;
  letter-spacing: -0.015em;
  width: max-content;
  max-width: 100%;
  padding-top: 0.02rem;
  font-size: clamp(0.68rem, 0.76vw, 0.76rem);
}
.footer-brand-head h4 span { display: block; white-space: nowrap; }
.footer-brand-head h4 strong {
  display: block;
  width: 100%;
  text-align: center;
  color: var(--navy);
  font-size: 1.18em;
  letter-spacing: 0.08em;
  margin-top: 0.12rem;
}
.footer-brand p { font-size: 0.88rem; color: var(--muted); max-width: 100%; }
.footer-links { justify-self: start; padding-left: 0.35rem; }
.footer-contact { justify-self: start; }
.site-footer h4 { color: var(--navy); margin-bottom: 0.9rem; font-size: 0.98rem; font-weight: 700; }
.site-footer a { color: var(--navy-2); }
.site-footer a:hover { color: var(--orange); }
.site-footer ul { list-style: none; }
.site-footer li { margin: 0.4rem 0; }
.footer-links a { display: inline-block; padding: 0.1rem 0; position: relative; }
.footer-links a::before { content: "→ "; color: var(--orange); opacity: 0; margin-left: -1.1em; transition: opacity 0.2s ease, margin 0.2s ease; }
.footer-links a:hover { text-decoration: none; }
.footer-links a:hover::before { opacity: 1; margin-left: 0; margin-right: 0.25em; }
.footer-contact li { display: flex; gap: 0.55rem; align-items: baseline; }
.footer-contact .ic { flex: 0 0 auto; color: var(--orange); }
.footer-bottom {
  max-width: var(--maxw);
  margin: 2.2rem auto 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
}

/* ---------- Data table (3+ columns) ---------- */
.data-table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; font-size: 0.93rem; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }
.data-table th, .data-table td { border: 1px solid var(--border); padding: 0.62rem 0.9rem; text-align: left; vertical-align: top; }
.data-table thead th { background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: #fff; font-weight: 700; border-color: var(--navy-2); }
.data-table tbody tr:nth-child(even) { background: var(--bg-alt); }
.data-table tbody tr { transition: background 0.15s ease; }
.data-table tbody tr:hover { background: var(--orange-soft); }

/* ---------- Process timeline ---------- */
.timeline { list-style: none; counter-reset: step; max-width: 860px; margin: 0 auto; }
.timeline li {
  position: relative;
  padding: 0.15rem 0 1.9rem 4rem;
  counter-increment: step;
}
.timeline li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange-2), var(--orange));
  color: #fff;
  font-weight: 800;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(194, 92, 52, 0.35), 0 0 0 5px var(--orange-soft);
}
.timeline li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 1.3rem;
  top: 3.1rem;
  bottom: 0.25rem;
  width: 2.5px;
  border-radius: 2px;
  background: linear-gradient(to bottom, rgba(194, 92, 52, 0.45), var(--border));
}
.timeline h3 { margin: 0 0 0.15rem; font-size: 1.04rem; }
.timeline p { color: var(--muted); font-size: 0.92rem; max-width: 62ch; }

/* ---------- Project feature cards (du-an) ---------- */
.pj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.7rem; }
.pj-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
  display: flex;
  flex-direction: column;
}
.pj-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pj-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  aspect-ratio: 4 / 3;
  height: auto;
  display: grid;
  place-items: center;
  background: #eef3f7;
}
.pj-media::before {
  content: "";
  position: absolute;
  inset: -18px;
  background-image: var(--pj-bg);
  background-size: cover;
  background-position: center;
  filter: blur(16px) saturate(1.08);
  transform: scale(1.08);
  opacity: 0.45;
}
.pj-media img, .pj-card > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: transform 0.55s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.pj-media-an-binh img { object-position: center center; }
.pj-card:hover .pj-media img { transform: scale(1.025); }
.pj-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(17, 39, 62, 0.35), transparent 45%);
  pointer-events: none;
}
.pj-media .badge {
  position: absolute;
  left: 1.1rem;
  bottom: 0.6rem;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(17, 39, 62, 0.18);
}
.pj-media .badge-invest { background: linear-gradient(135deg, var(--orange-2), var(--orange)); color: #fff; }
.pj-media .badge-sub { background: var(--navy); color: #fff; }
.pj-body { padding: 1.6rem 1.5rem 1.5rem; }
.pj-media + .pj-body { padding-top: 1.5rem; }
.pj-body h3 { margin: 0.3rem 0 0.7rem; font-size: 1.14rem; }
.pj-meta { display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 0.9rem; font-size: 0.91rem; }
.pj-meta dt { font-weight: 700; color: var(--navy); }
.pj-meta dd { margin: 0; color: var(--muted); }

/* ---------- Service section media ---------- */
.svc-media {
  margin: 1.2rem 0 1.6rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  background: #fff;
}
.svc-media img {
  border-radius: 0;
  border: 0;
  box-shadow: none;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  transition: transform 0.6s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.svc-media:hover img { transform: scale(1.01); }

/* ---------- Note box ---------- */
.note-box {
  background: var(--orange-soft);
  border-left: 4px solid var(--orange);
  border-radius: 0 12px 12px 0;
  padding: 0.95rem 1.25rem;
  font-size: 0.93rem;
  color: var(--text);
  margin: 1.2rem 0;
  box-shadow: var(--shadow-sm);
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s cubic-bezier(0.22, 0.8, 0.3, 1), transform 0.6s cubic-bezier(0.22, 0.8, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }
.grid .reveal:nth-child(2), .project-grid .reveal:nth-child(2), .pj-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.grid .reveal:nth-child(3), .project-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.grid .reveal:nth-child(4) { transition-delay: 0.06s; }
.grid .reveal:nth-child(5) { transition-delay: 0.14s; }
.grid .reveal:nth-child(6) { transition-delay: 0.22s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 14px 28px rgba(17, 39, 62, 0.14);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 0.5rem 0; }
  .site-nav a { border-radius: 0; padding: 0.85rem 1.4rem; }
  .site-nav a::after { left: 1.4rem; right: auto; width: 26px; bottom: 0.55rem; }
}

/* === RESPONSIVE: laptop/tablet ≤1024px === */
@media (max-width: 1024px) {
  .hero { padding: 4.2rem 1.25rem 6.4rem; }
  .hero h1 { font-size: clamp(2rem, 4.2vw, 2.8rem); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }

}

/* === RESPONSIVE: tablet ≤860px === */
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .hero { padding: 3.8rem 1.25rem 5.6rem; }
  .hero p { font-size: 1rem; }
  .hero .btn-group { flex-direction: column; align-items: flex-start; gap: 0.7rem; }
  .hero .btn-group .btn { width: 100%; max-width: 300px; text-align: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
  .hero-stats .stat { padding: 0.7rem; }
  .hero-stats .num { font-size: 1.4rem; }
  .hero-wave svg { height: 48px; }
  .wave-sep svg { height: 32px; }
  .section-title { font-size: 1.5rem; }
  .section-sub { font-size: 0.95rem; margin-bottom: 2rem; }
  .section-eyebrow { font-size: 0.72rem; }
  .pj-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; column-gap: 2rem; row-gap: 2.2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand-head { max-width: 560px; grid-template-columns: 78px minmax(0, 1fr); gap: 0.38rem; }
  .footer-brand-head img { height: 76px; }
  .footer-brand-head h4 { width: auto; font-size: 0.88rem; }
  .footer-brand-head h4 span { white-space: normal; }
  .footer-links { padding-left: 0; }
  .stats-band .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .data-table { display: block; overflow-x: auto; }
  .contact-split { flex-direction: column; }
  .contact-split .map-wrap, .contact-split .map-wrap iframe { height: 360px; min-height: 360px; }
  .svc-thumb { height: 200px; }
  .page-hero { padding: 3rem 1.25rem 2.8rem; }
  .page-hero h1 { font-size: 1.8rem; }
}

/* === RESPONSIVE: small tablet / large phone ≤640px === */
@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .section { padding: 2.8rem 0; }
  .container { padding: 0 1rem; }
  .hero { padding: 3rem 1rem 4.6rem; }
  .hero h1 { font-size: clamp(1.8rem, 7.5vw, 2.2rem); }
  .hero p { font-size: 0.92rem; }
  .hero-stats { gap: 0.55rem; margin-top: 1.8rem; }
  .hero-stats .stat { padding: 0.6rem 0.75rem; }
  .hero-stats .num { font-size: 1.2rem; }
  .hero-stats .lbl { font-size: 0.68rem; }
  .hero-wave svg { height: 34px; }
  .wave-sep svg { height: 26px; }
  .section-title { font-size: 1.3rem; }
  .section-sub { font-size: 0.88rem; margin-bottom: 1.5rem; }
  .grid-3, .grid-2, .project-grid, .pj-grid { grid-template-columns: 1fr; gap: 1rem; }
  .card { padding: 1.1rem; }
  .card h3 { font-size: 0.98rem; }
  .svc-thumb { height: 210px; }
  .svc-icon-wrap { width: 48px; height: 48px; margin: -30px auto 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .footer-brand { grid-column: auto; }
  .footer-brand-head { grid-template-columns: 76px 1fr; gap: 0.35rem; }
  .footer-brand-head img { height: 72px; }
  .footer-brand-head h4 { font-size: 0.83rem; }
  .footer-brand-head h4 span { white-space: normal; }
  .footer-brand-head h4 strong { text-align: left; letter-spacing: 0.06em; }
  .footer-links, .footer-contact { justify-self: auto; }
  .info-table th { width: 36%; font-size: 0.85rem; }
  .info-table td { font-size: 0.85rem; }
  .info-table th, .info-table td { padding: 0.5rem 0.7rem; }
  .brand img { height: 38px; }
  .brand-name strong { font-size: 0.82rem; }
  .map-wrap iframe { height: 260px; }
  .page-hero { padding: 2.2rem 1rem 2rem; }
  .page-hero h1 { font-size: 1.4rem; }
  .page-hero p { font-size: 0.85rem; }
  .crumb { font-size: 0.72rem; }
  .cta-band { padding: 2.5rem 1rem; }
  .cta-band h2 { font-size: 1.25rem; }
  .cta-band p { font-size: 0.9rem; }
  .cta-band .btn { width: 100%; max-width: 300px; text-align: center; }
  .note-box { font-size: 0.88rem; padding: 0.8rem 1rem; }
  .pj-body { padding: 1.2rem 1rem 1.2rem; }
  .pj-body h3 { font-size: 1.02rem; }
  .pj-meta { font-size: 0.85rem; }
  .pj-media img, .pj-card > img { height: 190px; }
}

/* === RESPONSIVE: small phone ≤420px === */
@media (max-width: 420px) {
  body { font-size: 14.5px; }
  .section { padding: 2rem 0; }
  .container { padding: 0 0.75rem; }
  .hero { padding: 2.2rem 0.75rem 3.8rem; }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.88rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 0.4rem; }
  .hero-stats .stat { padding: 0.45rem 0.55rem; }
  .hero-stats .num { font-size: 1.05rem; }
  .nav-toggle { width: 30px; height: 30px; padding: 7px; gap: 4px; }
  .brand img { height: 32px; }
  .brand-name strong { font-size: 0.75rem; }
  .cta-band { padding: 2rem 0.75rem; }
  .cta-band h2 { font-size: 1.05rem; }
  .cta-band p { font-size: 0.82rem; }
  .section-title { font-size: 1.15rem; }
  .btn { font-size: 0.82rem; padding: 0.55rem 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}
.contact-split { align-items: stretch; }
.contact-split > div { min-width: 0; }
.contact-split .map-wrap, .contact-split .map-wrap iframe { height: 100%; min-height: 430px; }
@media (max-width: 860px){ .contact-split .map-wrap, .contact-split .map-wrap iframe { min-height: 360px; } }
@media (max-width: 640px){ .contact-split .map-wrap, .contact-split .map-wrap iframe { min-height: 260px; } }

/* ---------- Hero Banner (home) — city photo bg + content overlay ---------- */
.hero-banner {
  position: relative;
  background: var(--navy-3);
  overflow: hidden;
  color: #fff;
}
.hb-bg {
  display: block;
  width: 100%;
  height: auto;
}
.hb-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(90deg, rgba(10,23,38,0.94) 0%, rgba(15,33,53,0.82) 35%, rgba(17,39,62,0.50) 58%, rgba(17,39,62,0.28) 78%, rgba(17,39,62,0.08) 100%);
}
.hb-content {
  position: absolute;
  inset: 0;
  z-index: 3;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5rem 1.25rem 6rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hb-eyebrow {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--orange-2);
  margin-bottom: 0.5rem;
  font-weight: 700;
}
.hb-content h1.hb-eyebrow {
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange-2);
  margin-bottom: 1rem;
  margin-left: 0;
  margin-right: auto;
  font-weight: 800;
  line-height: 1.3;
  text-align: center;
  max-width: fit-content;
}
.hb-content h1 {
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.16;
  margin-bottom: 0.8rem;
  max-width: 800px;
  font-weight: 800;
}
.hb-content h1 em {
  font-style: normal;
  color: var(--orange-2);
}
.hb-content p {
  font-size: clamp(0.95rem, 1.25vw, 1.05rem);
  max-width: 680px;
  color: #d1dbe9;
  line-height: 1.7;
  margin-top: 0.25rem;
  margin-bottom: 1.2rem;
}
.hb-content .btn-group { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 1.8rem; }
.hb-content .btn-group .btn { font-size: 0.95rem; }
.hb-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 800px;
  gap: 1rem;
}
.hb-stats .stat {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-sm);
  padding: 0.9rem 0.8rem;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
}
.hb-stats .num {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.hb-stats .num small { font-size: 0.7em; color: var(--orange-2); }
.hb-stats .lbl {
  font-size: 0.7rem;
  color: #b0c4d8;
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.hb-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 4;
  line-height: 0;
  pointer-events: none;
}
.hb-wave svg { display: block; width: 100%; height: 96px; }
@media (max-width: 860px) {
  .hb-content { padding: 3.2rem 1.25rem 4.5rem; }
  .hb-content h1 { font-size: 1.8rem; }
  .hb-content h1.hb-eyebrow { font-size: 1.8rem; }
  .hb-content p { font-size: 0.92rem; }
  .hb-stats { grid-template-columns: repeat(2, 1fr); gap: 0.6rem; }
  .hb-stats .stat { padding: 0.7rem; }
  .hb-stats .num { font-size: 1.2rem; }
  .hb-wave svg { height: 48px; }
}
@media (max-width: 640px) {
  .hb-content { padding: 2.4rem 1rem 3.2rem; }
  .hb-content h1 { font-size: 1.5rem; }
  .hb-content h1.hb-eyebrow { font-size: 1.5rem; }
  .hb-content p { font-size: 0.88rem; }
  .hb-content .btn-group { flex-direction: column; align-items: flex-start; }
  .hb-content .btn-group .btn { width: 100%; max-width: 280px; text-align: center; }
  .hb-stats { gap: 0.4rem; }
  .hb-stats .stat { padding: 0.55rem 0.6rem; }
  .hb-stats .num { font-size: 1.05rem; }
  .hb-stats .lbl { font-size: 0.6rem; }
  .hb-wave svg { height: 32px; }
  .hb-overlay { background: linear-gradient(180deg, rgba(10,23,38,0.92) 0%, rgba(15,33,53,0.80) 40%, rgba(17,39,62,0.45) 70%, rgba(17,39,62,0.15) 100%); }
}

/* ---------- Brand banner (trang con) — full ngang ---------- */
.brand-banner {
  background: #eef2f8;
  line-height: 0;
}
.bb-bg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- Page hero (trang con) ----------