:root {
  --primary-color: #f37021; /* FPT orange */
  --secondary-color: #0072bc; /* FPT blue */
  --accent-color: #6ab142; /* FPT green */
  --text-color: #1e293b;
  --light-text: #475569;
  --background-color: #f8fbff;
  --card-background: #ffffff;
  --border-color: #e2e8f0;
  --shadow-color: rgba(15, 23, 42, 0.08);
  --max-width: 1100px;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
  background: linear-gradient(180deg, #fff7f0 0%, var(--background-color) 45%);
}

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

a:hover {
  color: var(--accent-color);
}

header {
  background: linear-gradient(135deg, #f37021, #ff8a3d);
  color: #fff;
  padding: 1.75rem 0;
  box-shadow: 0 4px 10px var(--shadow-color);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-text h1 {
  font-size: 1.8rem;
  margin: 0;
  letter-spacing: 1px;
}

.logo-text p {
  margin: 0.2rem 0 0;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
}

nav {
  background: #ffffff;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0.75rem 1.5rem;
  max-width: var(--max-width);
  justify-content: center;
  flex-wrap: wrap;
}

nav a {
  display: block;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  color: #0f172a;
  font-weight: 600;
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

nav a.active,
nav a:hover {
  background: rgba(243, 112, 33, 0.12);
  color: var(--primary-color);
  transform: translateY(-1px);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: grid;
  gap: 2.5rem;
}

.hero {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 243, 233, 0.9));
  border-radius: var(--radius);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
  padding: 2.5rem;
  display: grid;
  gap: 1.75rem;
  border: 1px solid var(--border-color);
}

.hero h2 {
  margin: 0;
  font-size: 2.3rem;
  color: var(--primary-color);
}

.hero p {
  margin: 0;
  color: var(--light-text);
  font-size: 1.05rem;
  line-height: 1.7;
}

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

.button {
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.4px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 25px rgba(0, 114, 188, 0.3);
}

.button.secondary {
  background: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  box-shadow: none;
}

.button:hover {
  transform: translateY(-2px);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem;
}

.card {
  background: var(--card-background);
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: 0 15px 34px var(--shadow-color);
  display: grid;
  gap: 0.75rem;
}

.card h3 {
  margin: 0;
  color: var(--primary-color);
}

.card p {
  margin: 0;
  color: var(--light-text);
}

.section-title {
  margin: 0;
  font-size: 1.75rem;
  color: var(--primary-color);
}

.text-lead {
  margin-top: 0.5rem;
  color: var(--light-text);
  line-height: 1.7;
}

.two-column {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 3px solid var(--secondary-color);
}

.timeline li {
  padding: 0 0 1.5rem 1.5rem;
  position: relative;
}

.timeline li::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 0.3rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: var(--secondary-color);
}

.highlight-box {
  background: rgba(243, 112, 33, 0.12);
  border: 1px solid rgba(243, 112, 33, 0.28);
  padding: 1.5rem;
  border-radius: var(--radius);
  color: #b54705;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  background: var(--card-background);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 24px var(--shadow-color);
}

.info-table th,
.info-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.info-table th {
  background: rgba(15, 31, 61, 0.9);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

.media-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 18px 35px rgba(15, 23, 42, 0.2);
}

.media-frame img,
.media-frame video {
  display: block;
  width: 100%;
  height: auto;
}

aside.control-panel {
  background: var(--card-background);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  padding: 1.75rem;
  box-shadow: 0 12px 30px var(--shadow-color);
  display: grid;
  gap: 1.35rem;
  height: fit-content;
}

.control-panel h3 {
  margin: 0;
  color: var(--primary-color);
}

.control-panel ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--light-text);
}

form {
  display: grid;
  gap: 1rem;
  background: var(--card-background);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 18px 35px var(--shadow-color);
  border: 1px solid var(--border-color);
}

form label {
  font-weight: 600;
  color: var(--primary-color);
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  padding: 0.8rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--secondary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 114, 188, 0.18);
}

.faq {
  display: grid;
  gap: 1rem;
}

.faq-item {
  background: var(--card-background);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 22px var(--shadow-color);
}

.faq-item h3 {
  margin: 0 0 0.6rem;
  color: var(--primary-color);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}

.gallery figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 32px var(--shadow-color);
  background: var(--card-background);
}

.gallery img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.gallery figcaption {
  padding: 0.8rem 1rem;
  color: var(--light-text);
  font-size: 0.95rem;
}

footer {
  background: #141821;
  color: rgba(255, 255, 255, 0.82);
  padding: 3rem 1.5rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.footer-section h4 {
  margin: 0 0 1rem;
  color: #ffffff;
}

.footer-section ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.82);
  transition: color 0.2s ease;
}

.footer-section a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(243, 112, 33, 0.15), rgba(0, 114, 188, 0.2));
  color: #0f172a;
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

.alert {
  padding: 1rem;
  border-radius: 10px;
  background: rgba(243, 112, 33, 0.08);
  color: var(--primary-color);
  border: 1px solid rgba(243, 112, 33, 0.25);
}

blockquote {
  margin: 0;
  padding: 1.2rem 1.5rem;
  border-left: 4px solid var(--secondary-color);
  background: rgba(0, 114, 188, 0.08);
  border-radius: 0 10px 10px 0;
  color: var(--light-text);
  font-style: italic;
}

.responsive-video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.25);
  border: 1px solid var(--border-color);
}

.responsive-video video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 960px) {
  .two-column {
    grid-template-columns: 1fr;
  }

  header {
    text-align: center;
  }

  .topbar {
    flex-direction: column;
    gap: 0.75rem;
  }

  nav ul {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 1.75rem;
  }

  .hero h2 {
    font-size: 1.85rem;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: 0.5rem;
  }

  nav a {
    padding: 0.5rem 0.85rem;
    font-size: 0.95rem;
  }
}

.print-only {
  display: none;
}

@media print {
  header,
  nav,
  footer,
  .button,
  .responsive-video,
  .media-frame,
  .gallery,
  .control-panel {
    display: none !important;
  }

  body {
    background: #fff;
  }

  main {
    padding: 0;
    max-width: 100%;
  }

  .print-only {
    display: block;
    margin-bottom: 1.5rem;
    color: var(--text-color);
  }
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #f37021, #ff8a3d);
  border: 1px solid rgba(243, 112, 33, 0.35);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  margin: 0.75rem auto;
  width: fit-content;
}

.nav-toggle span {
  display: inline-block;
  width: 18px;
  height: 2px;
  background: #fff;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: #fff;
  transition: transform 0.3s ease;
}

.nav-toggle span::before {
  transform: translateY(-6px);
}

.nav-toggle span::after {
  transform: translateY(6px);
}

nav.is-open ul {
  display: grid;
}

@media (max-width: 800px) {
  .nav-toggle {
    display: flex;
  }

  nav ul {
    display: none;
    width: 100%;
    gap: 0;
  }

  nav ul li {
    width: 100%;
  }

  nav ul a {
    border-radius: 0;
    padding: 0.75rem 1rem;
  }

  nav.is-open ul {
    display: grid;
  }
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}