:root {
  --primary: #0d2847;
  --primary-dark: #061527;
  --primary-light: #163c66;
  --accent: #e65100;
  --accent-hover: #ff6d00;
  --accent-red: #d32f2f;
  --text-main: #1a2530;
  --text-muted: #5a6a78;
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #edf2f7;
  --border-color: #dbe3eb;
  --border-dark: #24415f;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(13,40,71,0.08);
  --shadow-lg: 0 12px 28px rgba(13,40,71,0.14);
  --radius: 8px;
  --container-max: 1240px;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s, opacity 0.2s;
}

button, input, select, textarea {
  font: inherit;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 10px 18px;
  font-weight: 700;
  z-index: 999;
  border-radius: 4px;
}
.skip-link:focus {
  top: 16px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Typography Helpers */
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 10px;
}
.section-header {
  margin-bottom: 44px;
}
.section-header.center {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.section-header h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--primary);
  margin-bottom: 14px;
}
.section-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
}
.center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(230, 81, 0, 0.35);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230, 81, 0, 0.45);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: #ffffff;
  color: var(--primary);
  border-color: #ffffff;
  transform: translateY(-2px);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* Top Bar */
.top-bar {
  background: var(--primary-dark);
  color: #abbdd1;
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 6px 0;
}
.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.top-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.top-info .sep {
  opacity: 0.4;
}
.top-info b {
  color: #ffffff;
}
.top-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.top-hotline {
  color: #ffffff;
  font-size: 13px;
}
.top-hotline b {
  color: #ff9d5c;
}
.top-hotline:hover {
  color: #ff9d5c;
}
.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lang-switch button,
.lang-switch .lang-btn {
  background: transparent;
  border: 1.5px solid transparent;
  padding: 2px;
  cursor: pointer;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
  transition: all 0.2s ease;
  line-height: 0;
}
.lang-switch .flag-icon {
  width: 24px;
  height: 16px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  display: block;
}
.lang-switch button:hover,
.lang-switch .lang-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.lang-switch button.active,
.lang-switch .lang-btn.active {
  opacity: 1;
  border-color: #ff9d5c;
  background: rgba(255, 157, 92, 0.15);
  box-shadow: 0 0 6px rgba(255, 157, 92, 0.4);
  transform: translateY(-1px);
}
.lang-switch span {
  display: none;
}


/* Header */
.header {
  position: sticky;
  top: 0;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-name {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--primary);
  line-height: 1.1;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
}
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  padding: 6px 0;
  position: relative;
}
.nav a:not(.nav-cta-btn):hover {
  color: var(--accent);
}
.nav a:not(.nav-cta-btn)::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}
.nav a:not(.nav-cta-btn):hover::after {
  width: 100%;
}
.nav-cta-btn {
  background: var(--primary);
  color: #ffffff !important;
  padding: 8px 16px !important;
  border-radius: var(--radius);
  font-size: 13px !important;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta-btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.menu-btn {
  display: none;
  background: none;
  border: 0;
  width: 40px;
  height: 40px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 6px;
}
.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Sections Global */
.section {
  padding: 80px 0;
}
.section.dark {
  background: var(--primary);
  color: #ffffff;
}
.section.dark .section-header h2 {
  color: #ffffff;
}
.section.dark .section-desc {
  color: #b3c5d7;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: 90px 0 70px;
  color: #ffffff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 21, 39, 0.94) 0%, rgba(6, 21, 39, 0.85) 50%, rgba(6, 21, 39, 0.55) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
}
.hero-badge {
  display: inline-block;
  background: rgba(230, 81, 0, 0.2);
  border: 1px solid rgba(255, 109, 0, 0.4);
  color: #ffaa75;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(34px, 4.8vw, 56px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 22px;
}
.hero h1 em {
  color: #ff904d;
  font-style: normal;
}
.hero-desc {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.6;
  color: #d1dfed;
  max-width: 740px;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 50px;
}
.hero-highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 30px;
}
.hl-item {
  display: flex;
  flex-direction: column;
}
.hl-num {
  font-size: 34px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.1;
}
.hl-label {
  font-size: 13px;
  color: #a4bad0;
  margin-top: 4px;
}

/* Clients Slider Section */
.clients-section {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 38px 0 44px;
  overflow: hidden;
}
.clients-title {
  text-align: center;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.clients-slider-wrapper {
  position: relative;
  width: 100%;
}
.clients-slider {
  --items-visible: 5;
  --gap: 16px;
  overflow: hidden;
  width: 100%;
  padding: 8px 4px 12px;
  cursor: grab;
  user-select: none;
}
.clients-slider:active {
  cursor: grabbing;
}
.clients-track {
  display: flex;
  gap: var(--gap);
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}
.client-slide-item {
  flex: 0 0 calc((100% - (var(--gap) * (var(--items-visible) - 1))) / var(--items-visible));
  min-width: 0;
}
.client-card {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px 12px 14px;
  height: 100%;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  transition: all 0.25s ease;
  box-shadow: 0 2px 5px rgba(13, 40, 71, 0.03);
}
.client-card:hover {
  background: #ffffff;
  border-color: var(--primary-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 22px rgba(13, 40, 71, 0.1);
}
.client-card-logo {
  height: 52px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
}
.client-card-logo img {
  max-height: 48px;
  max-width: 88%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.25s ease;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.04));
}
.client-card:hover .client-card-logo img {
  transform: scale(1.08);
}
.client-card-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  min-height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.clients-arrow {
  display: none !important;
}
.clients-dots {
  display: none !important;
}

@media (max-width: 1024px) {
  .clients-slider {
    --items-visible: 3;
    --gap: 14px;
  }
}

@media (max-width: 640px) {
  .clients-slider {
    --items-visible: 2;
    --gap: 10px;
  }
  .clients-arrow {
    display: none;
  }
  .client-card {
    min-height: 120px;
    padding: 14px 8px 10px;
  }
  .client-card-logo {
    height: 44px;
  }
  .client-card-logo img {
    max-height: 40px;
  }
  .client-card-name {
    font-size: 12px;
    min-height: 32px;
  }
}

/* About Section */
.about-section {
  background: #ffffff;
}
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-content h2 {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 22px;
}
.letter-box {
  background: var(--bg-page);
  border-left: 4px solid var(--accent);
  padding: 26px;
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow-sm);
}
.letter-box p {
  font-size: 16px;
  color: #334155;
  line-height: 1.7;
  margin-bottom: 16px;
}
.letter-sign {
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--text-main);
}
.letter-sign strong {
  color: var(--primary);
}
.sign-tag {
  font-size: 11px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.about-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.about-image-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  background: #0f172a;
  min-height: 440px;
  display: flex;
}
.about-company-img {
  width: 100%;
  height: 100%;
  min-height: 440px;
  max-height: 520px;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  transition: transform 0.4s ease;
}
.about-image-card:hover .about-company-img {
  transform: scale(1.03);
}
.about-badge-floating {
  position: absolute;
  top: 18px;
  right: 18px;
  background: rgba(13, 40, 71, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  z-index: 2;
}
.about-badge-floating .badge-num {
  font-size: 15px;
  font-weight: 900;
  color: #ffaa75;
  letter-spacing: 0.05em;
}
.about-badge-floating .badge-lbl {
  font-size: 11px;
  color: #d1dfed;
  font-weight: 600;
}
.about-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(6, 21, 39, 0.94) 0%, rgba(6, 21, 39, 0.65) 60%, transparent 100%);
  padding: 36px 20px 20px;
  color: #ffffff;
  z-index: 2;
}
.about-image-tag {
  display: flex;
  align-items: center;
  gap: 12px;
}
.about-image-tag .tag-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(4px);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.about-image-tag b {
  display: block;
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 2px;
}
.about-image-tag small {
  font-size: 12.5px;
  color: #c7d8ea;
  line-height: 1.35;
  display: block;
}
.card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
  border-bottom: 2px solid var(--bg-subtle);
  padding-bottom: 10px;
}
.legal-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.legal-card li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.legal-card li span {
  color: var(--text-muted);
  flex-shrink: 0;
}
.legal-card li b {
  text-align: right;
  color: var(--text-main);
}
.legal-card a {
  color: var(--accent);
  font-weight: 700;
}

.revenue-card .card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.rev-bars {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rev-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}
.rev-label {
  width: 70px;
  font-weight: 700;
  color: var(--text-main);
}
.rev-bar-wrap {
  flex: 1;
  background: var(--bg-subtle);
  height: 18px;
  border-radius: 4px;
  overflow: hidden;
}
.rev-bar {
  background: linear-gradient(90deg, #163c66, #e65100);
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease-out;
}
.rev-val {
  width: 75px;
  font-weight: 800;
  color: var(--primary);
  text-align: right;
}
.rev-total {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.rev-total span {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}
.rev-total b {
  font-size: 18px;
  color: var(--accent);
}

/* Capabilities & Organization Chart */
.capabilities-section {
  background: var(--bg-page);
}
.org-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}
.org-node {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px 28px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.org-node.leader {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  padding: 18px 36px;
}
.org-role {
  display: block;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #ff9d5c;
}
.org-node.leader .org-name {
  font-size: 14px;
  color: #cbdbee;
  margin-top: 4px;
}
.org-connector {
  width: 2px;
  height: 24px;
  background: var(--border-color);
}
.org-mid-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 860px;
}
.sub-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 20px;
}
.org-badge {
  background: var(--accent);
  color: #ffffff;
  font-size: 11px;
  font-weight: 900;
  padding: 2px 8px;
  border-radius: 4px;
}
.sub-node strong {
  font-size: 14px;
  color: var(--primary);
}
.sub-node small {
  font-size: 12px;
  color: var(--text-muted);
}
.org-dept-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
}
.dept-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--primary-light);
  transition: transform 0.2s, box-shadow 0.2s;
}
.dept-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-top-color: var(--accent);
}
.dept-card h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}
.dept-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.3);
}
.srv-num {
  font-size: 24px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 14px;
}
.service-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.3;
}
.service-card p {
  font-size: 14px;
  color: #b7c9dc;
  line-height: 1.6;
  margin-bottom: 18px;
}
.srv-list {
  list-style: none;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: #9cb3cc;
}
.srv-list li {
  position: relative;
  padding-left: 16px;
}
.srv-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
}

/* Products Section */
.products-section {
  background: #ffffff;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.product-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #9fc1e8;
}
.prod-img {
  height: 220px;
  overflow: hidden;
  background: #f1f5f9;
}
.prod-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card:hover .prod-img img {
  transform: scale(1.05);
}
.prod-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.prod-tag {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent);
  background: #fff3e0;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.prod-info h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.35;
}
.prod-info p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.55;
}

.prod-cta-box {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.prod-cta-box p {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

/* Projects Section & Filters */
.projects-section {
  background: var(--bg-page);
}
.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}
.filter-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 9px 18px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
}
.project-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.proj-img-wrap {
  position: relative;
  height: 220px;
  background: #1e293b;
  overflow: hidden;
}
.proj-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.project-item:hover .proj-img-wrap img {
  transform: scale(1.04);
}
.proj-cat-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(13, 40, 71, 0.85);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.proj-card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.proj-card-content h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.35;
}
.proj-contract {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}
.proj-contract b {
  color: var(--text-main);
}
.btn-detail {
  align-self: flex-start;
  background: none;
  border: 0;
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 800;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-detail::after {
  content: "→";
  transition: transform 0.2s;
}
.btn-detail:hover {
  color: var(--accent);
}
.btn-detail:hover::after {
  transform: translateX(4px);
}

/* Gallery Section */
.gallery-section {
  background: #ffffff;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.gal-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.gal-card img, .gal-card video {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background: #000;
}
.gal-info {
  padding: 18px 20px;
}
.gal-info h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}
.gal-info p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Contact Section */
.contact-section {
  background: var(--primary);
  color: #ffffff;
}
.contact-section .eyebrow {
  color: #ff9d5c;
}
.contact-section h2 {
  color: #ffffff;
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.contact-info .cont-desc {
  font-size: 16px;
  color: #c0d3e5;
  line-height: 1.6;
  margin-bottom: 30px;
}
.contact-details {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.c-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.c-icon {
  font-size: 22px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.c-item b {
  display: block;
  font-size: 14px;
  color: #ffffff;
  margin-bottom: 4px;
}
.c-item p {
  font-size: 14px;
  color: #b7cbdf;
  line-height: 1.5;
}
.phone-link {
  font-size: 22px;
  font-weight: 900;
  color: #ffaa75 !important;
}
.phone-link:hover {
  text-decoration: underline;
}

.contact-form-wrap {
  background: #ffffff;
  border-radius: var(--radius);
  padding: 34px;
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
}
.contact-form h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}
.form-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #334155;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border-color);
  background: #fdfdfd;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 40, 71, 0.1);
}
.contact-form textarea {
  resize: vertical;
}
.submit-btn {
  margin-top: 8px;
  width: 100%;
  padding: 14px;
  font-size: 16px;
}
.submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}
.form-feedback {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  display: none;
  line-height: 1.5;
}
.form-feedback.success {
  display: block;
  color: #1b5e20;
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  padding: 12px;
  border-radius: 6px;
}
.form-feedback.error {
  display: block;
  color: #b71c1c;
  background: #ffebee;
  border: 1px solid #ffcdd2;
  padding: 12px;
  border-radius: 6px;
}

/* Footer */
.footer {
  background: var(--primary-dark);
  color: #9ab1c8;
  padding-top: 60px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 14px;
}
.footer-logo {
  height: 38px;
  width: auto;
}
.brand-col p {
  font-size: 13.5px;
  line-height: 1.6;
  margin-bottom: 12px;
}
.foot-tax {
  font-size: 12px;
  color: #ffaa75;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 8px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
}
.footer-col ul a:hover {
  color: #ffffff;
  padding-left: 4px;
}
.footer-col p {
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 14px;
}
.footer-bottom {
  background: #030c17;
  padding: 18px 0;
  font-size: 12.5px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a {
  color: #d1dfed;
}

/* Modal */
.project-modal {
  border: 0;
  border-radius: var(--radius);
  background: #ffffff;
  padding: 0;
  max-width: min(800px, 94vw);
  margin: auto;
  box-shadow: var(--shadow-lg);
}
.project-modal::backdrop {
  background: rgba(4, 15, 26, 0.75);
  backdrop-filter: blur(4px);
}
.modal-card {
  position: relative;
  display: flex;
  flex-direction: column;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  background: rgba(0, 0, 0, 0.6);
  color: #ffffff;
  border: 0;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background 0.2s;
}
.modal-close:hover {
  background: var(--accent);
}
.modal-img-wrap {
  background: #0f172a;
  max-height: 480px;
  overflow: hidden;
}
.modal-img-wrap img {
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  margin: auto;
}
.modal-text {
  padding: 24px 28px;
}
.modal-text h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.modal-text p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Floating Actions */
.floating-actions {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  align-items: self-end;
  gap: 12px;
  z-index: 99;
}
.float-btn {
  border: 0;
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  transition: transform 0.2s, box-shadow 0.2s;
}
.float-btn:hover {
  transform: scale(1.05);
}
.zalo-btn {
  background: #0088ff;
  color: #ffffff;
  width: 50px;
  height: 50px;
  font-size: 14px;
}
.phone-btn {
  background: var(--primary-dark);;
  color: #ffffff;
  padding: 10px 18px;
  border-radius: 30px;
  font-size: 14px;
  animation: pulse-ring 2s infinite;
}
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(230, 81, 0, 0.6); }
  70% { box-shadow: 0 0 0 12px rgba(230, 81, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(230, 81, 0, 0); }
}
.to-top-btn {
  background: var(--primary);
  color: #ffffff;
  width: 44px;
  height: 44px;
  font-size: 18px;
  display: none;
}
.to-top-btn.show {
  display: flex;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-highlights {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .org-dept-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .top-info {
    display: none;
  }
  .top-bar-inner {
    justify-content: space-between;
  }
  .header-inner {
    height: 66px;
  }
  .menu-btn {
    display: flex;
  }
  .nav {
    display: none;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-color);
  }
  .nav.open {
    display: flex;
  }
  .nav-cta-btn {
    width: 100%;
    text-align: center;
  }
  .hero {
    min-height: 540px;
    padding: 60px 0 50px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .org-mid-grid {
    grid-template-columns: 1fr;
  }
  .org-dept-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .products-grid {
    grid-template-columns: 1fr;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .prod-cta-box {
    flex-direction: column;
    text-align: center;
  }
  .contact-form-wrap {
    padding: 24px 18px;
  }
  .phone-btn .phone-text {
    display: none;
  }
  .phone-btn {
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: 50%;
  }
}