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

:root {
  --primary: #c9a84c;
  --primary-dark: #a8832d;
  --primary-light: #e8c96a;
  --accent: #c9a84c;
  --bg-dark: #0a0a0a;
  --bg-card: #141414;
  --bg-card2: #111111;
  --border: rgba(201,168,76,0.18);
  --text: #d4d0c8;
  --text-muted: #888880;
  --white: #ffffff;
  --nav-h: 72px;
  --radius: 8px;
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-light); }

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.text-center { text-align: center; }
.mt-2 { margin-top: 24px; display: inline-block; }
.w-full { width: 100%; }
.hide-mobile { display: inline; }

/* ===========================
   TYPOGRAPHY
=========================== */
.section-label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto 56px;
  line-height: 1.8;
}

.sub-title {
  font-family: 'Oswald', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 36px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===========================
   BUTTONS
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 36px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.btn-primary {
  background: var(--primary);
  color: #0a0a0a;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
  color: #0a0a0a;
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===========================
   NAVBAR
=========================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(201,168,76,0.12);
  transition: background var(--transition);
}
.navbar.scrolled {
  background: rgba(10,10,10,0.99);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}

.nav-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 0;
  margin-left: auto;
  height: 100%;
}
.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0 28px;
  height: 100%;
  color: #b0aca0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color var(--transition);
  z-index: 1;
  overflow: hidden;
}
/* Skewed white background pseudo-element */
.nav-links a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #ffffff;
  transform: skewX(-12deg) scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}
.nav-links a:hover::before,
.nav-links a.active::before {
  transform: skewX(-12deg) scaleX(1);
}
.nav-links a:hover,
.nav-links a.active {
  color: #0a0a0a;
}
/* Remove old underline */
.nav-links a::after { display: none; }

.nav-lang {
  display: flex;
  gap: 0;
  margin-left: 24px;
  border: 1px solid var(--primary);
}
.lang {
  font-size: 12px;
  font-weight: 700;
  color: #b0aca0;
  cursor: pointer;
  padding: 5px 12px;
  transition: all var(--transition);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-block;
  line-height: normal;
}
.lang.active {
  background: var(--primary);
  color: #0a0a0a;
}
.lang:not(.active):hover {
  color: var(--primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: #0e0e0e;
  border-top: 1px solid var(--border);
  padding: 16px 24px;
}
.mobile-menu a {
  color: var(--text);
  padding: 14px 0;
  border-bottom: 1px solid rgba(201,168,76,0.1);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.mobile-menu a:hover { color: var(--primary); }
.mobile-menu.open { display: flex; }

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
}

/* Video nền hero */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  pointer-events: none;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  /* Gradient đậm bên trái để chữ dễ đọc, mờ dần sang phải */
  background: linear-gradient(
    105deg,
    rgba(10,10,10,0.92) 0%,
    rgba(10,10,10,0.80) 35%,
    rgba(10,10,10,0.45) 65%,
    rgba(10,10,10,0.15) 100%
  );
  z-index: 1;
}

.hero-overlay { display: none; }

.hero-content {
  position: relative;
  z-index: 2;
  text-align: left;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--nav-h) 80px 0 80px;
}

.hero-badge {
  display: inline-block;
  background: rgba(201,168,76,0.08);
  border: 1px solid rgba(201,168,76,0.35);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  padding: 7px 18px;
  border-radius: 3px;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease both;
}

.hero-title {
  font-family: 'Oswald', 'Barlow Condensed', sans-serif;
  font-size: clamp(28px, 4.25vw, 58px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 36px;
  animation: fadeInDown 0.8s ease 0.1s both;
  letter-spacing: 3px;
  text-transform: uppercase;
  max-width: 900px;
}
.hero-title .brand {
  color: var(--primary);
  display: block;
}

.hero-sub {
  font-size: clamp(15px, 1.5vw, 17px);
  color: #c0bcb4;
  margin-bottom: 44px;
  line-height: 1.8;
  animation: fadeInDown 0.8s ease 0.2s both;
  max-width: 540px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
  animation: fadeInDown 0.8s ease 0.3s both;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  right: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  z-index: 2;
  writing-mode: vertical-rl;
  animation: fadeIn 1.2s ease 0.6s both;
}

.scroll-arrow {
  width: 16px;
  height: 16px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  animation: bounce 1.5s ease infinite;
  writing-mode: horizontal-tb;
}

/* ===========================
   TICKER
=========================== */
.ticker {
  background: var(--primary);
  overflow: hidden;
  padding: 10px 0;
}
.ticker-inner {
  display: inline-flex;
  white-space: nowrap;
  animation: ticker 30s linear infinite;
  color: #0a0a0a;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ===========================
   ABOUT
=========================== */
.about { background: var(--bg-dark); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 16px;
}
.about-text strong { color: var(--white); }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.stat-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.stat-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===========================
   USE CASES
=========================== */
.usecases {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.usecase-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

/* Ảnh nền */
.card-bg-img {
  position: absolute;
  inset: 0;
  background-image: var(--card-bg);
  background-size: cover;
  background-position: center;
  background-color: #1a1a1a; /* fallback khi chưa có ảnh */
  transition: transform 0.5s ease;
  z-index: 0;
}

/* Gradient overlay: tối từ dưới lên */
.usecase-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,10,10,0.95) 0%,
    rgba(10,10,10,0.65) 50%,
    rgba(10,10,10,0.25) 100%
  );
  z-index: 1;
  transition: background var(--transition);
}

/* Viền vàng trên cùng khi hover */
.usecase-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  z-index: 3;
}

.usecase-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(201,168,76,0.12);
}
.usecase-card:hover .card-bg-img {
  transform: scale(1.06);
}
.usecase-card:hover::after {
  background: linear-gradient(
    to top,
    rgba(10,10,10,0.98) 0%,
    rgba(10,10,10,0.75) 50%,
    rgba(10,10,10,0.35) 100%
  );
}
.usecase-card:hover::before { transform: scaleX(1); }

/* Nội dung text */
.card-content {
  position: relative;
  z-index: 2;
  padding: 28px;
}
.card-content h3 {
  font-family: 'Oswald', sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.card-content p {
  font-size: 13.5px;
  color: rgba(210,205,195,0.85);
  line-height: 1.7;
}

/* ===========================
   CHALLENGE
=========================== */
.challenge { background: var(--bg-dark); }

.challenge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.challenge-col p {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 16px;
}

.challenge-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.challenge-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-muted);
  font-size: 15px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.challenge-list li::before {
  content: '▸';
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===========================
   MISSION & VISION (cinematic cards)
=========================== */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 8px;
}
.mv-card {
  position: relative;
  min-height: 520px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  isolation: isolate;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.mv-card:hover {
  transform: translateY(-4px);
  border-color: rgba(201,168,76,0.4);
  box-shadow: 0 28px 64px rgba(0,0,0,0.5);
}
.mv-card-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1.2s ease, filter 0.6s ease;
  filter: brightness(0.55) saturate(0.85) contrast(1.05);
}
.mv-card:hover .mv-card-bg {
  transform: scale(1.06);
  filter: brightness(0.7) saturate(1) contrast(1.05);
}
.mv-card-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(135deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.55) 50%, rgba(10,10,10,0.78) 100%),
    linear-gradient(to top, rgba(10,10,10,0.95) 0%, transparent 70%);
  pointer-events: none;
}
.mv-card-content {
  position: relative;
  z-index: 2;
  padding: 48px 44px;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.mv-roman {
  position: absolute;
  top: 24px;
  right: 36px;
  font-family: 'Oswald', sans-serif;
  font-size: 110px;
  font-weight: 700;
  line-height: 1;
  color: rgba(201,168,76,0.12);
  letter-spacing: -2px;
  pointer-events: none;
  user-select: none;
}
.mv-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Oswald', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 18px;
}
.mv-card-tag::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--primary);
}
.mv-card-title {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.2;
  margin-bottom: 18px;
  max-width: 90%;
}
.mv-card-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(212,208,200,0.88);
  margin-bottom: 28px;
  max-width: 95%;
}
.mv-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid rgba(201,168,76,0.18);
}
.mv-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13.5px;
  color: rgba(212,208,200,0.92);
  line-height: 1.55;
}
.mv-list li::before {
  content: '';
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border: 1px solid var(--primary);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--primary) 0%, var(--primary) 40%, transparent 42%);
  margin-top: 2px;
}
.mv-grid--three { grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mv-card--compact { min-height: 360px; }
.mv-card--compact .mv-card-content { padding: 38px 34px; }
.mv-card--compact .mv-card-title { font-size: clamp(20px, 1.8vw, 24px); }
.mv-card--compact .mv-roman { font-size: 88px; top: 18px; right: 28px; }

@media (max-width: 1100px) {
  .mv-grid--three { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .mv-grid { grid-template-columns: 1fr; gap: 20px; }
  .mv-grid--three { grid-template-columns: 1fr; }
  .mv-card { min-height: 460px; }
  .mv-card--compact { min-height: 320px; }
  .mv-card-content { padding: 40px 32px; }
  .mv-roman { font-size: 80px; top: 16px; right: 24px; }
}

/* ===========================
   PRODUCT
=========================== */
.product {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.product-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.feature-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.feature-item .card-bg-img {
  position: absolute;
  inset: 0;
  background-image: var(--card-bg);
  background-size: cover;
  background-position: center;
  background-color: #1c1c1c;
  transition: transform 0.5s ease;
  z-index: 0;
}
.feature-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,10,10,0.95) 0%,
    rgba(10,10,10,0.65) 50%,
    rgba(10,10,10,0.25) 100%
  );
  z-index: 1;
  transition: background var(--transition);
}
.feature-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  z-index: 3;
}
.feature-item:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(201,168,76,0.12);
}
.feature-item:hover .card-bg-img { transform: scale(1.06); }
.feature-item:hover::after {
  background: linear-gradient(
    to top,
    rgba(10,10,10,0.98) 0%,
    rgba(10,10,10,0.75) 50%,
    rgba(10,10,10,0.35) 100%
  );
}
.feature-item:hover::before { transform: scaleX(1); }
.feature-item .card-content h4 {
  font-family: 'Oswald', sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.feature-item .card-content p {
  font-size: 13.5px;
  color: rgba(210,205,195,0.85);
  line-height: 1.7;
}

/* Deploy section */
.deploy-section { margin-bottom: 80px; }

.deploy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.deploy-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition);
}
.deploy-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.deploy-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: rgba(201,168,76,0.15);
  line-height: 1;
  margin-bottom: 16px;
}
.deploy-card h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.deploy-card p {
  font-size: 14px;
  color: var(--text-muted);
}

/* Modes section */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.mode-card {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.mode-card:hover {
  border-color: var(--primary);
  background: var(--bg-card);
}

.mode-tag {
  font-family: 'Rajdhani', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.4;
  margin-bottom: 12px;
}
.mode-card h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.mode-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===========================
   SCALABLE
=========================== */
.scalable { background: var(--bg-dark); }

.scalable-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.scalable-text p {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 16px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 15px;
}
.check {
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.scalable-image { display: flex; justify-content: center; }

.image-placeholder {
  width: 100%;
  max-width: 460px;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(201,168,76,0.06) 0%, transparent 70%);
}
.placeholder-inner {
  text-align: center;
  z-index: 1;
}
.placeholder-icon { font-size: 64px; margin-bottom: 16px; }
.placeholder-inner p { color: var(--primary); font-family: 'Rajdhani', sans-serif; font-size: 20px; font-weight: 700; }
.placeholder-inner .small { color: var(--text-muted); font-size: 13px; font-family: 'Inter', sans-serif; margin-top: 4px; }

/* ===========================
   PRESS
=========================== */
.press {
  background: var(--bg-card2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.press-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.press-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
}
.press-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.press-logo { font-size: 32px; margin-bottom: 20px; }

.press-quote {
  font-size: 15px;
  color: var(--text);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 20px;
}
.press-quote::before { content: '"'; color: var(--primary); font-size: 24px; }
.press-quote::after { content: '"'; color: var(--primary); font-size: 24px; }

.press-source {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.press-contact p {
  color: var(--text-muted);
  margin-bottom: 8px;
}
.press-email {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
}
.press-email:hover { color: var(--white); }

/* ===========================
   NEWSLETTER
=========================== */
.newsletter {
  background: linear-gradient(135deg, rgba(201,168,76,0.08) 0%, rgba(180,150,60,0.05) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 64px 0;
}

.newsletter-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 20px;
}
.newsletter-text h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.newsletter-text p {
  color: var(--text-muted);
  font-size: 15px;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}
.newsletter-form input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 13px 20px;
  color: var(--white);
  font-size: 15px;
  width: 300px;
  outline: none;
  transition: border-color var(--transition);
}
.newsletter-form input:focus { border-color: var(--primary); }
.newsletter-form input::placeholder { color: var(--text-muted); }

.newsletter-note {
  font-size: 12px;
  color: var(--text-muted);
  max-width: 600px;
}

/* ===========================
   CONTACT
=========================== */
.contact { background: var(--bg-dark); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
}

.contact-info h3,
.contact-form h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}
.contact-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-item strong {
  display: block;
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.contact-item a, .contact-item span {
  font-size: 15px;
  color: var(--text-muted);
}
.contact-item a:hover { color: var(--primary); }

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--white);
  font-size: 15px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

/* ===========================
   CAREER
=========================== */
.career {
  background: linear-gradient(135deg, rgba(201,168,76,0.05) 0%, transparent 60%);
  border-top: 1px solid var(--border);
}

.career-inner {
  max-width: 700px;
}
.career-inner p {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 8px;
}

/* ===========================
   FOOTER
=========================== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
}

.footer-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
  transition: all var(--transition);
}
.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.footer-col h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
}
.footer-col a,
.footer-col span {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
}
.footer-bottom span {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary); }

/* News card title */
.news-title {
  font-family: 'Oswald', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

/* Contact social icons */
.contact-social {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}
.contact-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  transition: all var(--transition);
}
.contact-social a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(201,168,76,0.08);
}

/* Select option dark style */
.form-group select option {
  background: #1a1a1a;
  color: var(--white);
}
.form-group select:focus { border-color: var(--primary); }

/* ===========================
   INNER PAGE BANNER
=========================== */
.page-banner {
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
  background-image: url('hero-bg.jpg');
  background-size: cover;
  background-position: center;
  padding-top: var(--nav-h);
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10,10,10,0.95) 0%,
    rgba(10,10,10,0.80) 50%,
    rgba(10,10,10,0.50) 100%
  );
  z-index: 1;
}
.page-banner-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 80px;
}
.page-banner-content .section-label { margin-bottom: 16px; }
.page-title {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 2px;
  line-height: 1.1;
}
.page-title span { color: var(--primary); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--primary); }
.breadcrumb .sep { opacity: 0.4; }

/* Inner page sections */
.page-section { padding: 80px 0; }
.page-section.alt { background: var(--bg-card2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Value cards */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.value-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.value-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(201,168,76,0.3);
}
.value-card-media {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}
.value-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease, filter 0.5s ease;
  filter: brightness(0.85) saturate(0.9) contrast(1.05);
}
.value-card:hover .value-card-media img {
  transform: scale(1.08);
  filter: brightness(1) saturate(1) contrast(1.05);
}
.value-card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-card) 0%, rgba(20,20,20,0.5) 45%, transparent 100%);
  pointer-events: none;
}
.value-card-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: 'Oswald', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  background: rgba(10,10,10,0.75);
  padding: 5px 11px;
  border: 1px solid rgba(201,168,76,0.45);
  border-radius: 3px;
  z-index: 2;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.value-card-body {
  padding: 22px 28px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.value-card-body::before {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--primary);
  margin-bottom: 16px;
  transition: width 0.4s ease;
}
.value-card:hover .value-card-body::before { width: 72px; }
.value-icon { font-size: 40px; margin-bottom: 20px; }
.value-card h3 {
  font-family: 'Oswald', sans-serif;
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
  line-height: 1.25;
}
.value-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* Solution showcase – alternating rows */
.solution-showcase {
  display: flex;
  flex-direction: column;
  gap: 56px;
  margin-top: 56px;
}
.showcase-item {
  display: flex;
  align-items: stretch;
  min-height: 340px;
  position: relative;
  cursor: pointer;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.3s ease;
}
.showcase-item:hover {
  box-shadow: 0 0 0 2px var(--primary), 0 24px 64px rgba(201,168,76,0.12);
}
.showcase-item:hover { color: inherit; }
.showcase-item--reverse {
  flex-direction: row-reverse;
}
.showcase-img {
  width: 48%;
  flex-shrink: 0;
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  z-index: 1;
  box-shadow: 0 12px 48px rgba(0,0,0,0.45);
}
.showcase-img img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  display: block;
}
/* fallback khi chưa có ảnh */
.showcase-img-placeholder {
  width: 100%;
  height: 100%;
  min-height: 320px;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
}
.showcase-body {
  background: #ffffff;
  color: #111;
  border-radius: 14px;
  padding: 44px 44px 44px 56px;
  margin-left: -28px;
  position: relative;
  z-index: 2;
  flex: 1;
  box-shadow: 0 8px 48px rgba(0,0,0,0.18);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.showcase-item--reverse .showcase-body {
  margin-left: 0;
  margin-right: -28px;
  padding: 44px 56px 44px 44px;
}
.showcase-num {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--primary);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.showcase-body h3 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 700;
  color: #0a0a0a;
  line-height: 1.15;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.showcase-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 16px;
}
.showcase-body p {
  font-size: 14.5px;
  color: #444;
  line-height: 1.8;
  margin-bottom: 28px;
}
.showcase-body .btn-dark {
  display: inline-block;
  background: #0a0a0a;
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 12px 28px;
  border-radius: 4px;
  text-decoration: none;
  transition: background var(--transition);
  align-self: flex-start;
}
.showcase-body .btn-dark:hover {
  background: var(--primary);
  color: #0a0a0a;
}

/* News grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.news-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(201,168,76,0.08);
}
.news-thumb {
  width: 100%;
  height: 200px;
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  border-bottom: 1px solid var(--border);
}
.news-body { padding: 28px; }
.news-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
  display: block;
}
.news-card h3 {
  font-family: 'Oswald', sans-serif;
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.3;
}
.news-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.news-date { font-size: 12px; color: var(--text-muted); margin-top: 16px; display: block; opacity: 0.6; }

/* Full contact page */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}
.map-placeholder {
  width: 100%;
  height: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  margin-top: 32px;
  color: var(--text-muted);
  flex-direction: column;
  gap: 12px;
}
.map-placeholder span { font-size: 13px; letter-spacing: 1px; }

@media (max-width: 1024px) {
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-page-grid { grid-template-columns: 1fr; }
  .page-banner-content { padding: 48px 40px; }
  .showcase-img { width: 44%; }
}
@media (max-width: 768px) {
  .value-grid, .news-grid { grid-template-columns: 1fr; }
  .page-banner-content { padding: 40px 24px; }
  .showcase-item,
  .showcase-item--reverse {
    flex-direction: column;
  }
  .showcase-img {
    width: 100%;
    min-height: 240px;
    border-radius: 14px 14px 0 0;
  }
  .showcase-img img { min-height: 240px; }
  .showcase-body {
    margin-left: 0;
    margin-right: 0;
    border-radius: 0 0 14px 14px;
    padding: 32px 28px;
  }
  .showcase-item--reverse .showcase-body {
    margin-left: 0;
    margin-right: 0;
    padding: 32px 28px;
  }
}

/* ===========================
   ANIMATIONS
=========================== */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  .usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .product-features { grid-template-columns: repeat(2, 1fr); }
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { gap: 48px; }
}

@media (max-width: 768px) {
  .hide-mobile { display: none; }
  .nav-links, .nav-lang { display: none; }
  .hamburger { display: flex; }

  .about-grid,
  .challenge-grid,
  .scalable-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

  .about-stats { grid-template-columns: 1fr 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  .product-features { grid-template-columns: 1fr; }
  .deploy-grid { grid-template-columns: 1fr; }
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
  .press-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .newsletter-inner { flex-direction: column; gap: 24px; }
  .newsletter-form { flex-direction: column; width: 100%; }
  .newsletter-form input { width: 100%; }

  .hero-content { padding: var(--nav-h) 24px 0 24px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .modes-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .contact-form { padding: 24px; }
}