/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  color: #222;
  line-height: 1.6;
  overflow-x: hidden;
  background: #ffffff;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: linear-gradient(184.49deg, #000000 3.64%, #011A36 96.36%);
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.3); }

.header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo img { height: 55px; width: auto; }
.nav-links { display: flex; gap: 0; align-items: center; }
.nav-divider { color: rgba(255,255,255,0.3); font-size: 0.85rem; user-select: none; }
.nav-links a {
  color: #cdd6e0; font-size: 13px; font-weight: 700;
  padding: 7px 10px; border-radius: 6px;
  transition: all 0.3s; white-space: nowrap;
}
.nav-links a:hover {
  color: #fff;
}
.nav-links a.active {
  background: #e8a500; color: #0a1931; font-weight: 700;
  border-radius: 20px; padding: 7px 20px;
}

/* Mobile menu */
.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span {
  display: block; width: 26px; height: 3px; background: #fff;
  margin: 5px 0; border-radius: 2px; transition: 0.3s;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  padding-top: 70px; padding-bottom: 0; overflow: hidden;
}
.hero-bg {
  position: relative;
  background: linear-gradient(184.49deg, #000000 3.64%, #011A36 96.36%);
}
.hero-bg img {
  width: 100%; height: auto; object-fit: cover; display: block;
}
.hero-content {
  position: absolute; bottom: 8%; left: 0; width: 100%;
  text-align: center; z-index: 2; line-height: normal;
}
.hero-content h1 {
  font-size: 2.6rem; color: #fff; font-weight: 800;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
  margin-bottom: 12px;
}
.hero-content h1 span { color: #f5c518; }
.hero-content p {
  font-size: 1.3rem; color: #e0e0e0;
  margin-bottom: 30px; font-weight: 500;
}
.btn-cta {
  display: inline-block;
  background: linear-gradient(135deg, #00c853, #00e676);
  color: #fff; font-size: 1.1rem; font-weight: 700;
  padding: 16px 40px; border-radius: 50px; border: none;
  cursor: pointer; transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(0,200,83,0.4);
}
.btn-cta:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,200,83,0.5); }

/* ===== WHY BTA ===== */
.why-bta {
  background: #fff; padding: 16px 0 16px;
}
.why-bta-title {
  text-align: left;
  font-size: 2.2rem; font-weight: 900;
  color: #FFF700; margin-bottom: 20px;
  letter-spacing: 1px;
  background: #1a9e8f;
  display: inline-block;
  padding: 18px 60px;
  border-radius: 0 30px 0 30px;
}
.why-bta { text-align: left; }
.why-bta-title span { color: #FFF700; }
.why-block {
  display: flex; align-items: flex-start; gap: 24px;
  margin-bottom: 0;
  padding: 24px 20px;
}
.why-block--reverse {
  flex-direction: row-reverse;
  background: #f5f6f8;
  border-radius: 12px;
  margin: 8px 0;
}
.why-text { flex: 1; }
.why-text h3 {
  font-size: 1.2rem; font-weight: 800; color: #0a1931;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid #e8a500;
  display: inline-block;
}
.why-text p {
  font-size: 1rem; color: #444; margin-bottom: 8px; line-height: 1.7;
}
.why-highlight {
  font-weight: 700; font-style: italic; color: #0a1931 !important;
  font-size: 1.05rem !important;
}
.why-text ul {
  margin: 6px 0 10px; padding-left: 6px;
}
.why-text ul li {
  padding: 3px 0 3px 16px; position: relative;
  font-size: 0.95rem; color: #444;
}
.why-text ul li::before {
  content: '\2022'; position: absolute; left: 2px; color: #0a1931; font-weight: 700;
}
.why-img { flex: 0 0 33%; max-width: 33%; }
.why-img img { width: 100%; height: auto; }

@media (max-width: 768px) {
  .why-block, .why-block--reverse { flex-direction: column; }
  .why-img { max-width: 100%; }
  .why-bta-title { font-size: 1.8rem; }
}

/* ===== FAQ ===== */
.faq {
  background: #fff; padding: 16px 0; text-align: center;
}
.faq .why-bta-title {
  color: #fff;
}
.faq-list {
  text-align: left; max-width: 900px; margin: 0 auto;
}
.faq-item {
  padding: 16px 0;
  border-bottom: 1px solid #eee;
}
.faq-item h3 {
  font-size: 1rem; font-weight: 800; color: #0a1931;
  margin-bottom: 6px;
}
.faq-item p {
  font-size: 0.92rem; color: #555; line-height: 1.7;
}

/* ===== CONTACT FORM ===== */
.contact-form-section {
  background: #fff; padding: 16px 0; text-align: center;
}
.contact-title {
  font-size: 2.2rem; font-weight: 900; color: #0a1931;
  margin-bottom: 16px;
}
.contact-card {
  max-width: 500px; margin: 0 auto;
  background: linear-gradient(160deg, #1a9e8f 0%, #0e7a6e 60%, #0a5c52 100%);
  border-radius: 20px;
  padding: 40px 32px;
  position: relative; overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}
.contact-bg-decor {
  position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
  background: url('../images/bg-landscape.png') center bottom/cover no-repeat;
  opacity: 0.25;
}
.contact-form {
  position: relative; z-index: 1;
}
.form-group {
  margin-bottom: 16px; text-align: left;
}
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: rgba(255,255,255,0.85); margin-bottom: 6px; font-style: italic;
}
.form-group input,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  border: none; border-radius: 25px;
  font-size: 0.95rem; font-family: inherit;
  outline: none;
  background: rgba(255,255,255,0.9);
  color: #333;
  transition: box-shadow 0.3s;
}
.form-group textarea {
  border-radius: 16px; resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(255,255,255,0.4);
  background: #fff;
}
.btn-submit {
  display: inline-block;
  background: linear-gradient(135deg, #e8d44d, #c8b400);
  color: #0a1931; font-size: 1rem; font-weight: 800;
  padding: 12px 40px; border-radius: 25px;
  border: none; cursor: pointer;
  margin-top: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: transform 0.3s, box-shadow 0.3s;
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

/* ===== SECTION COMMON ===== */
section { padding: 50px 0; }
.section-title {
  text-align: center; margin-bottom: 30px;
}
.section-title h2 {
  font-size: 2rem; font-weight: 800; color: #0a1931;
  margin-bottom: 12px; line-height: 1.3;
}
.section-title h2 span { color: #1565c0; }
.section-title p {
  font-size: 1.1rem; color: #555; max-width: 700px; margin: 0 auto;
}

/* ===== ECOSYSTEM (Không chỉ là website) ===== */
.ecosystem { background: #fff; padding: 0 0 30px; }
.ecosystem .section-title {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  padding: 20px 40px;
  max-width: 800px;
  margin: 0 auto 20px;
  position: relative; z-index: 3;
}
@media (min-width: 769px) {
  .ecosystem .section-title { max-width: 95%; }
}
.ecosystem .section-title h2 { font-size: 1.8rem; color: #111; margin-bottom: 0; }
.eco-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; align-items: stretch;
  max-width: 100%;
}
.eco-card {
  background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  min-height: 520px;
}
.eco-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(0,0,0,0.15); }
.eco-card-img {
  height: 320px; overflow: hidden; position: relative;
}
.eco-card-img img { width: 100%; height: 100%; object-fit: cover; }
.eco-card-body { padding: 24px; }
.eco-card-body h3 { font-size: 1.3rem; font-weight: 700; color: #0a1931; margin-bottom: 10px; }
.eco-card-body p { font-size: 0.95rem; color: #555; margin-bottom: 8px; }
.eco-card-body ul { margin: 10px 0; }
.eco-card-body ul li {
  padding: 4px 0; font-size: 0.9rem; color: #444;
  padding-left: 20px; position: relative;
}
.eco-card-body ul li::before {
  content: '\2713'; position: absolute; left: 0; color: #00c853; font-weight: 700;
}
/* Website card special style */
.eco-card--website {
  background: none; overflow: visible; margin-bottom: 30px;
}
.eco-card-phone-bg--web {
  position: absolute; z-index: 1;
  top: 30%; left: 50%; transform: translateX(-50%);
  width: 100%; height: auto;
}
.eco-card-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  z-index: 0;
}
.eco-card-bg::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(0,0,0,0.15);
}
.eco-card-inner {
  position: relative; z-index: 2;
  padding: 30px 24px 0; text-align: center; color: #fff;
  display: flex; flex-direction: column; align-items: center;
  min-height: 100%;
}
.eco-card-subtitle {
  font-size: 1.05rem; font-weight: 500; font-style: italic;
  margin-bottom: 0; color: #fff;
}
.eco-card-heading {
  font-size: 3.2rem; font-weight: 900;
  color: #e8a500;
  text-shadow: 1px 1px 0 rgba(0,0,0,0.2);
  margin-bottom: 0; line-height: 1.1;
}
.eco-card--app .eco-card-heading {
  color: #fff;
  font-size: 3.8rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
.eco-card--app .eco-card-subtitle {
  font-size: 1.1rem; color: #e8a500;
}
.eco-card--app .eco-card-subheading--green {
  color: #e8a500 !important;
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 700;
  align-self: flex-end;
  padding-right: 20px;
}

/* POS card */
.eco-card--pos {
  background: none; overflow: visible; margin-bottom: 30px;
}
.eco-card--pos .eco-card-bg::after {
  background: rgba(0,0,0,0.1);
}
.eco-card-inner--pos {
  text-align: left !important;
  padding: 24px 16px 0 !important;
}
.pos-header {
  text-align: left;
  margin-bottom: 10px;
}
.eco-card-heading--red {
  color: #d32f2f !important;
  font-size: 4rem !important;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3) !important;
}
.eco-card-subtitle--yellow {
  color: #d32f2f;
  font-style: italic;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: right;
}
.pos-body {
  display: flex; gap: 8px; align-items: center;
}
.pos-list {
  flex: 1; text-align: left; list-style: none;
  background: rgba(0,0,0,0.1);
  backdrop-filter: blur(2px);
  border-radius: 12px;
  padding: 10px 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.pos-list li {
  padding: 5px 0; font-size: 0.95rem; color: #fff; font-weight: 600;
  display: flex; align-items: flex-start; gap: 6px;
  line-height: 1.4;
}
.pos-icon {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px;
  background: #d32f2f; color: #fff;
  border-radius: 50%; font-size: 0.65rem;
  flex-shrink: 0;
}
.pos-phone {
  flex: 0 0 50%; max-width: 50%;
}
.pos-phone img {
  width: 100%; height: auto;
}
.eco-card--pos .btn-detail {
  display: block !important;
  background: #1565c0 !important; color: #fff !important;
  padding: 14px 0;
  border-radius: 12px;
  font-size: 1.1rem; font-weight: 700;
  width: 80%; margin: 16px auto 0;
  border: none; text-align: center;
  position: relative; top: 22px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
}
.eco-card-subheading {
  font-size: 1.3rem; font-weight: 900; color: #fff;
  text-shadow: 0 2px 6px rgba(0,0,0,0.3);
  margin-bottom: 12px;
}
.eco-card-device {
  margin: 0 0 14px; width: 100%;
}
.eco-card-device img {
  width: 100%; height: auto;
}
.eco-card-list {
  text-align: left; margin: 0 0 20px; width: 100%;
  padding: 0 6px;
}
.eco-card-list li {
  padding: 6px 0; font-size: 0.95rem; color: #fff; font-weight: 600;
}
.eco-card-list li .icon {
  color: #f5c518; margin-right: 4px;
}
.eco-card--website .eco-card-list {
  background: rgba(0,0,0,0.1);
  backdrop-filter: blur(2px);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.eco-card--website .btn-detail {
  display: block !important;
  background: #e8a500 !important; color: #fff !important;
  padding: 14px 0;
  border-radius: 12px;
  font-size: 1.1rem; font-weight: 700;
  width: 80%; margin: auto auto 0;
  border: none; text-align: center;
  position: relative; top: 22px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
}
.eco-card--app .btn-detail {
  display: block !important;
  background: #005C2E !important; color: #fff !important;
  padding: 14px 0;
  border-radius: 12px;
  font-size: 1.1rem; font-weight: 700;
  width: 80%; margin: 20px auto 0;
  border: none; text-align: center;
  position: relative; top: 22px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
}

/* App card */
.eco-card--app {
  background: none; overflow: visible; margin-bottom: 30px;
}
.eco-card--app .eco-card-bg::after {
  background: rgba(0,0,0,0.3);
}
.eco-card-phone-bg {
  position: absolute; z-index: 1;
  bottom: 60px; left: 50%; transform: translateX(-50%);
  width: 100%; height: auto;
}
.eco-card-spacer {
  flex: 1;
}
.eco-card--app .eco-card-list {
  background: rgba(0,0,0,0.1);
  backdrop-filter: blur(2px);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.eco-card--app .eco-card-list li .icon {
  color: #fff;
}
.eco-card-subheading--green {
  color: #4caf50 !important; font-style: italic;
}

.eco-card .btn-detail {
  display: inline-block; margin-top: 12px;
  padding: 10px 24px; border-radius: 25px;
  font-weight: 700; font-size: 0.9rem;
  transition: all 0.3s; cursor: pointer; border: none;
}
.eco-card:nth-child(1) .btn-detail { background: #1565c0; color: #fff; }
.eco-card:nth-child(2) .btn-detail { background: #e8a500; color: #fff; }
.eco-card:nth-child(3) .btn-detail { background: #00c853; color: #fff; }
.eco-card .btn-detail:hover { transform: translateY(-2px); opacity: 0.9; }

/* ===== FEATURES ===== */
.features { background: #fff; }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.feature-item {
  text-align: center; padding: 30px 20px;
  border-radius: 16px; transition: all 0.3s;
}
.feature-item:hover { background: #f0f7ff; transform: translateY(-4px); }
.feature-icon {
  width: 70px; height: 70px; margin: 0 auto 16px;
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
}
.feature-item h3 { font-size: 1.1rem; font-weight: 700; color: #0a1931; margin-bottom: 8px; }
.feature-item p { font-size: 0.9rem; color: #666; }

/* ===== WEBSITE SECTION ===== */
.website-section {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  position: relative; overflow: hidden;
}
.website-section .container {
  display: flex; align-items: center; gap: 50px;
}
.website-text { flex: 1; }
.website-text h2 { font-size: 2rem; font-weight: 800; color: #1b5e20; margin-bottom: 16px; }
.website-text p { font-size: 1.05rem; color: #333; margin-bottom: 12px; }
.website-text ul li {
  padding: 6px 0 6px 24px; position: relative; font-size: 0.95rem;
}
.website-text ul li::before {
  content: '\2713'; position: absolute; left: 0; color: #2e7d32; font-weight: 700;
}
.website-img { flex: 1; }
.website-img img { border-radius: 12px; }

/* ===== APP SECTION ===== */
.app-section {
  background: linear-gradient(135deg, #0a1931 0%, #1a3a6b 100%);
  color: #fff; position: relative;
}
.app-section .container {
  display: flex; align-items: center; gap: 50px;
}
.app-text { flex: 1; }
.app-text h2 { font-size: 2rem; font-weight: 800; color: #f5c518; margin-bottom: 16px; }
.app-text p { font-size: 1.05rem; color: #cdd6e0; margin-bottom: 12px; }
.app-text ul li {
  padding: 6px 0 6px 24px; position: relative; color: #e0e0e0; font-size: 0.95rem;
}
.app-text ul li::before {
  content: '\2713'; position: absolute; left: 0; color: #f5c518; font-weight: 700;
}
.app-img { flex: 1; text-align: center; }
.app-img img { max-height: 450px; margin: 0 auto; border-radius: 12px; }

/* ===== POS SECTION ===== */
.pos-section {
  background: #fff;
  position: relative;
}
.pos-section .container {
  display: flex; align-items: center; gap: 50px;
}
.pos-text { flex: 1; }
.pos-text h2 { font-size: 2rem; font-weight: 800; color: #0a1931; margin-bottom: 16px; }
.pos-text p { font-size: 1.05rem; color: #555; margin-bottom: 12px; }
.pos-text ul li {
  padding: 6px 0 6px 24px; position: relative; font-size: 0.95rem;
}
.pos-text ul li::before {
  content: '\2713'; position: absolute; left: 0; color: #1565c0; font-weight: 700;
}
.pos-img { flex: 1; text-align: center; }
.pos-img img { max-height: 420px; margin: 0 auto; }

/* ===== INTEGRATION ===== */
.integration {
  background: #f8f9fb;
}
.integration .container {
  display: flex; align-items: center; gap: 50px;
}
.integration-text { flex: 1; }
.integration-text h2 { font-size: 2rem; font-weight: 800; color: #0a1931; margin-bottom: 16px; }
.integration-text p { font-size: 1.05rem; color: #555; margin-bottom: 12px; }
.integration-img { flex: 1; }
.integration-img img { border-radius: 12px; }
.integration-list {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 12px; margin-top: 16px;
}
.integration-list li {
  padding: 10px 16px; background: #fff; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600; color: #1565c0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  display: flex; align-items: center; gap: 8px;
}

/* ===== DISTRIBUTION ===== */
.distribution {
  background: #fff;
}
.distribution .container {
  display: flex; align-items: center; gap: 50px;
}
.distribution-text { flex: 1; }
.distribution-text h2 { font-size: 2rem; font-weight: 800; color: #0a1931; margin-bottom: 16px; }
.distribution-text p { font-size: 1.05rem; color: #555; margin-bottom: 12px; }
.distribution-img { flex: 1; text-align: center; }
.distribution-img img { max-height: 450px; margin: 0 auto; }

/* ===== PARTNER ===== */
.partner {
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
}
.partner .container {
  display: flex; align-items: center; gap: 50px;
}
.partner-text { flex: 1; }
.partner-text h2 { font-size: 2rem; font-weight: 800; color: #0a1931; margin-bottom: 16px; }
.partner-text p { font-size: 1.05rem; color: #444; margin-bottom: 12px; }
.partner-img { flex: 1; text-align: center; }
.partner-img img { max-height: 350px; margin: 0 auto; }

/* ===== STATS ===== */
.stats {
  background: linear-gradient(135deg, #0a1931, #1a3a6b);
  color: #fff; padding: 40px 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 30px; text-align: center;
}
.stat-item h3 {
  font-size: 2.5rem; font-weight: 800; color: #f5c518;
  margin-bottom: 8px;
}
.stat-item p { font-size: 1rem; color: #cdd6e0; }

/* ===== PRICING ===== */
.pricing { background: #f8f9fb; }
.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 30px; align-items: start;
}
.pricing-card {
  background: #fff; border-radius: 16px; padding: 32px 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  text-align: center; transition: transform 0.3s;
  position: relative;
}
.pricing-card:hover { transform: translateY(-8px); }
.pricing-card.popular {
  border: 3px solid #1565c0;
  transform: scale(1.05);
}
.pricing-card.popular:hover { transform: scale(1.05) translateY(-8px); }
.popular-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: #1565c0; color: #fff; padding: 4px 20px;
  border-radius: 20px; font-size: 0.85rem; font-weight: 700;
}
.pricing-card h3 { font-size: 1.3rem; font-weight: 700; color: #0a1931; margin-bottom: 8px; }
.pricing-card .price {
  font-size: 2rem; font-weight: 800; color: #1565c0; margin-bottom: 4px;
}
.pricing-card .price-note { font-size: 0.85rem; color: #888; margin-bottom: 20px; }
.pricing-card ul { text-align: left; margin-bottom: 24px; }
.pricing-card ul li {
  padding: 8px 0 8px 24px; position: relative;
  font-size: 0.9rem; color: #444; border-bottom: 1px solid #f0f0f0;
}
.pricing-card ul li::before {
  content: '\2713'; position: absolute; left: 0; color: #00c853; font-weight: 700;
}
.pricing-card .btn-price {
  display: inline-block; padding: 12px 32px; border-radius: 25px;
  font-weight: 700; font-size: 0.95rem; border: none; cursor: pointer;
  transition: all 0.3s;
}
.pricing-card:nth-child(1) .btn-price { background: #e3f2fd; color: #1565c0; }
.pricing-card:nth-child(2) .btn-price { background: #1565c0; color: #fff; }
.pricing-card:nth-child(3) .btn-price { background: #f5c518; color: #0a1931; }
.pricing-card .btn-price:hover { transform: translateY(-2px); opacity: 0.9; }

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, #1565c0, #0a1931);
  color: #fff; text-align: center; padding: 50px 0;
}
.cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.15rem; color: #cdd6e0; margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-cta-outline {
  display: inline-block; padding: 14px 36px; border-radius: 50px;
  font-weight: 700; font-size: 1rem; border: 2px solid #fff;
  color: #fff; background: transparent; cursor: pointer; transition: all 0.3s;
}
.btn-cta-outline:hover { background: #fff; color: #0a1931; }

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(184.49deg, #0a1931 0%, #0d1f3c 100%);
  color: #cdd6e0; padding: 40px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 0.8fr 1fr 1fr;
  gap: 30px;
}
.footer-logo { height: 50px; margin-bottom: 12px; }
.footer-col--info p { font-size: 0.85rem; line-height: 1.6; margin-bottom: 2px; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 14px; }
.footer-col p { font-size: 0.85rem; line-height: 1.8; }
.footer-col ul li { margin-bottom: 6px; }
.footer-col ul li a {
  font-size: 0.85rem; color: #aab4c2; transition: color 0.3s;
}
.footer-col ul li a:hover { color: #f5c518; }
.footer-social {
  display: flex; gap: 10px; margin-top: 16px;
}
.social-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 800; color: #fff;
  transition: transform 0.3s;
}
.social-icon:hover { transform: translateY(-3px); }
.social-fb { background: #1877f2; }
.social-zalo { background: #0068ff; font-size: 0.7rem; }
.social-in { background: #0a66c2; }

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .eco-grid, .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 70px; left: 0; right: 0;
    background: #0a1931; flex-direction: column;
    padding: 20px; gap: 4px;
    transform: translateY(-120%); transition: transform 0.3s;
    max-height: calc(100vh - 70px); overflow-y: auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-divider { display: none; }
  .menu-toggle { display: block; }

  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 1rem; }
  .hero { min-height: 450px; }

  .eco-grid, .features-grid, .pricing-grid { grid-template-columns: 1fr; }
  .eco-card { min-height: auto; }
  .eco-card-phone-bg--web { width: 100%; top: 40%; }
  .eco-card-phone-bg { width: 100%; bottom: 50px; }
  .eco-card-heading { font-size: 2.5rem; }
  .eco-card-heading--red { font-size: 3rem !important; }
  .eco-card-subheading { font-size: 1.1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .website-section .container,
  .app-section .container,
  .pos-section .container,
  .integration .container,
  .distribution .container,
  .partner .container {
    flex-direction: column; gap: 30px;
  }

  .section-title h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }

  .pricing-card.popular { transform: scale(1); }
  .pricing-card.popular:hover { transform: translateY(-8px); }
}