:root {
  /* Refined enterprise palette — slate dominant, teal as accent */
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --teal-darker: #134e4a;
  --teal-soft: #ccfbf1;
  --teal-tint: #f0fdfa;
  --amber: #d97706;
  --amber-dark: #b45309;

  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  --bg: #ffffff;
  --bg-soft: #fafbfc;
  --bg-warm: #faf9f7;
  --text: #0f172a;
  --text-2: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --sh-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --sh: 0 2px 8px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.04);
  --sh-md:
    0 4px 16px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.06);
  --sh-lg:
    0 12px 40px rgba(15, 23, 42, 0.1), 0 32px 64px rgba(15, 23, 42, 0.08);
  --sh-teal: 0 8px 24px rgba(13, 148, 136, 0.25);
  --sh-amber: 0 8px 24px rgba(217, 119, 6, 0.25);

  --r-xs: 6px;
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --cont: 1180px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family:
    "Be Vietnam Pro",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "cv11", "ss01";
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: none;
}
.container {
  max-width: var(--cont);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== TYPE SCALE ===== */
.eyebrow-text {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--teal-dark);
}
.section-head {
  max-width: 760px;
  margin: 0 auto 36px;
}
.section-head.center {
  text-align: center;
}
.section-head .eyebrow-text {
  margin-bottom: 14px;
  display: inline-block;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.7px;
  line-height: 1.18;
  color: var(--slate-900);
  margin-bottom: 14px;
}
.section-head p {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== HEADER ===== */
.site-header,
.mqg-site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
}
.nav,
.mqg-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 24px;
}
.brand,
.mqg-brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.brand-logo,
.mqg-brand-logo {
  height: 46px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.brand-text {
  display: none;
}
.foot-brand .brand-logo,
.foot-brand .mqg-brand-logo {
  filter: brightness(0) invert(0.96);
  opacity: 0.92;
  height: 54px;
}
@media (max-width: 560px) {
  .brand-logo,
  .mqg-brand-logo {
    height: 38px;
  }
  .foot-brand .brand-logo,
  .foot-brand .mqg-brand-logo {
    height: 44px;
  }
}
.nav-links,
.mqg-nav-links {
  display: flex;
  list-style: none;
  gap: 2px;
}
.nav-links a,
.mqg-nav-links a {
  padding: 8px 13px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  transition: all 0.15s;
  white-space: nowrap;
  letter-spacing: -0.1px;
}
.nav-links a:hover,
.mqg-nav-links a:hover {
  background: var(--slate-100);
  color: var(--slate-900);
}
.nav-links a.active,
.mqg-nav-links a.active {
  color: var(--slate-900);
  background: var(--slate-100);
}
.brand-text {
  min-width: 0;
}
.brand-tag {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 1280px) {
  .brand-tag {
    display: none;
  }
}
.nav-cta,
.mqg-nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: 7px;
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
}
.lang:hover {
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.2px;
  transition:
    transform 0.22s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.22s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.18s ease,
    border-color 0.18s ease;
  cursor: pointer;
  border: 0;
  font-family: inherit;
  position: relative;
  white-space: nowrap;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
}
.btn:active {
  transform: translateY(0) scale(0.98);
}
.btn-primary {
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(15, 23, 42, 0.1),
    0 4px 12px rgba(15, 23, 42, 0.14);
}
.btn-primary:hover {
  background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 6px 16px rgba(15, 23, 42, 0.18),
    0 12px 28px rgba(15, 23, 42, 0.22);
}
.btn-teal {
  background: linear-gradient(180deg, #14b8a6 0%, #0d9488 55%, #0f766e 100%);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.24),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(13, 148, 136, 0.18),
    0 6px 16px rgba(13, 148, 136, 0.28);
}
.btn-teal:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    0 6px 16px rgba(13, 148, 136, 0.3),
    0 14px 30px rgba(13, 148, 136, 0.38);
}
.btn-secondary {
  background: #fff;
  color: var(--slate-900);
  border: 1px solid var(--border-strong);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 1px 2px rgba(15, 23, 42, 0.04);
}
.btn-secondary:hover {
  border-color: var(--slate-400);
  background: var(--slate-50);
  transform: translateY(-1px);
  box-shadow:
    0 4px 12px rgba(15, 23, 42, 0.08),
    0 8px 20px rgba(15, 23, 42, 0.06);
}
.btn-ghost {
  color: var(--text-2);
  padding: 11px 14px;
  background: transparent;
}
.btn-ghost:hover {
  color: var(--slate-900);
  background: var(--slate-100);
}
.btn-lg {
  padding: 14px 26px;
  font-size: 15px;
  border-radius: 11px;
}
.btn svg {
  flex-shrink: 0;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn:hover svg {
  transform: translateX(2px);
}
.mobile-toggle,
.mqg-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 60px 0 52px;
  background: linear-gradient(180deg, var(--bg-warm) 0%, var(--bg) 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(
    ellipse 80% 60% at 50% 30%,
    #000 30%,
    transparent 75%
  );
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
}

.eyebrow-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px 7px 8px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border-strong);
  font-size: 12px;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 22px;
  box-shadow: var(--sh-sm);
}
.eyebrow-pill .live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.5);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.5);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(13, 148, 136, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(13, 148, 136, 0);
  }
}

.hero h1 {
  font-size: clamp(34px, 4.8vw, 58px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -1.4px;
  color: var(--slate-900);
  margin-bottom: 22px;
}
.hero h1 .em {
  color: var(--teal-darker);
}

.hero-sub {
  font-size: 18px;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 32px;
}
.hero-sub strong {
  color: var(--slate-900);
  font-weight: 700;
}

.hero-cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-meta .it {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.5px;
  line-height: 1;
}
.hero-meta .lb {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
  margin-top: 4px;
}

.hero-photo {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  aspect-ratio: 1/1.1;
  background: linear-gradient(135deg, var(--slate-100) 0%, #fff 100%);
  box-shadow: var(--sh-lg);
  border: 1px solid var(--border);
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-photo .badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.88);
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}
.hero-photo .badge .live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  animation: pulse 2s infinite;
}

/* ===== PROCESS — 3 bước ===== */
.process {
  padding: 64px 0;
  background: var(--bg);
}
.proc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.proc-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 40px 32px 32px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
}
.proc-card:hover {
  border-color: var(--slate-300);
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}
.proc-card.highlight {
  background: linear-gradient(
    180deg,
    var(--slate-900) 0%,
    var(--slate-800) 100%
  );
  color: #fff;
  border-color: transparent;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.2);
}
.proc-num {
  position: absolute;
  top: 24px;
  right: 32px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--slate-300);
}
.proc-card.highlight .proc-num {
  color: rgba(94, 234, 212, 0.7);
}
.proc-ic {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--slate-100);
  color: var(--slate-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.proc-card.highlight .proc-ic {
  background: rgba(13, 148, 136, 0.2);
  color: #5eead4;
  border: 1px solid rgba(13, 148, 136, 0.3);
}
.proc-tag {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  color: var(--teal-dark);
  margin-bottom: 8px;
}
.proc-card.highlight .proc-tag {
  color: #5eead4;
}
.proc-card h3 {
  font-size: 21px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.4px;
  margin-bottom: 12px;
  line-height: 1.25;
}
.proc-card.highlight h3 {
  color: #fff;
}
.proc-card > p {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}
.proc-card.highlight > p {
  color: var(--slate-300);
}
.proc-feats {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.proc-card.highlight .proc-feats {
  border-top-color: rgba(255, 255, 255, 0.08);
}
.proc-feats li {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.5;
}
.proc-card.highlight .proc-feats li {
  color: var(--slate-300);
}
.proc-feats li svg {
  color: var(--teal-dark);
  flex-shrink: 0;
  margin-top: 2px;
  width: 15px;
  height: 15px;
}
.proc-card.highlight .proc-feats li svg {
  color: #5eead4;
}

/* ===== HUB CTA — Network panel dẫn về /cong-cu/ ===== */
.hub-cta {
  padding: 64px 0;
  background: var(--slate-50);
}
.hub-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  background: linear-gradient(
    135deg,
    var(--slate-900) 0%,
    var(--slate-800) 100%
  );
  color: #fff;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.hub-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      60% 50% at 80% 100%,
      rgba(13, 148, 136, 0.22) 0%,
      transparent 60%
    ),
    radial-gradient(
      50% 40% at 0% 0%,
      rgba(217, 119, 6, 0.1) 0%,
      transparent 60%
    );
  pointer-events: none;
}
.hub-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(
    ellipse 70% 60% at 50% 50%,
    #000 30%,
    transparent 75%
  );
}
.hub-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 64px 56px;
}
.hub-text .eyebrow-text {
  color: #5eead4;
  margin-bottom: 14px;
  display: inline-block;
}
.hub-text h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.7px;
  color: #fff;
  margin-bottom: 16px;
}
.hub-text h2 .em {
  color: #f59e0b;
}
.hub-text > p {
  font-size: 16.5px;
  color: var(--slate-300);
  line-height: 1.65;
  margin-bottom: 24px;
  max-width: 520px;
}
.hub-text > p strong {
  color: #fff;
  font-weight: 600;
}

.hub-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 28px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.hub-stats .it {
  display: flex;
  flex-direction: column;
}
.hub-stats .num {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.4px;
}
.hub-stats .num.accent {
  color: #5eead4;
}
.hub-stats .lb {
  font-size: 11.5px;
  color: var(--slate-400);
  font-weight: 500;
  margin-top: 5px;
  letter-spacing: 0.2px;
}

/* Visual graphic */
.hub-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 380px;
  margin: 0 auto;
}
.hub-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}
.hub-node {
  position: absolute;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5eead4;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  z-index: 2;
  transition: all 0.2s;
}
.hub-node:hover {
  transform: scale(1.06);
  background: rgba(13, 148, 136, 0.16);
  border-color: rgba(94, 234, 212, 0.4);
}
.hub-node-1 {
  top: 8%;
  left: 12%;
}
.hub-node-2 {
  top: 8%;
  right: 12%;
}
.hub-node-3 {
  top: 42%;
  left: 0%;
}
.hub-node-4 {
  top: 42%;
  right: 0%;
}
.hub-node-5 {
  bottom: 8%;
  left: 12%;
}
.hub-node-more {
  bottom: 8%;
  right: 12%;
  color: #fbbf24;
  font-weight: 800;
  font-size: 13px;
  background: rgba(217, 119, 6, 0.14);
  border-color: rgba(245, 158, 11, 0.28);
}
.hub-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 104px;
  height: 104px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-darker) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 12px 36px rgba(13, 148, 136, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  z-index: 3;
  border: 3px solid rgba(255, 255, 255, 0.1);
}
.hub-center-mark {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1;
}
.hub-center-lb {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ===== GIẢI PHÁP CÓ SẴN — 3 packages ===== */
.solutions {
  padding: 64px 0;
  background: var(--bg);
}
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.sol-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 32px 28px 28px;
  transition: all 0.22s ease;
  display: flex;
  flex-direction: column;
}
.sol-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
  border-color: var(--slate-300);
}
.sol-card.featured {
  border-color: var(--teal);
  box-shadow: 0 12px 36px rgba(13, 148, 136, 0.14);
  transform: translateY(-6px);
}
.sol-card.featured:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 44px rgba(13, 148, 136, 0.2);
}
.sol-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--teal) 0%, var(--teal-dark) 100%);
  color: #fff;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: var(--sh-teal);
}
.sol-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.sol-ic {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--teal-soft) 0%, #a7f3d0 100%);
  color: var(--teal-darker);
  display: flex;
  align-items: center;
  justify-content: center;
}
.sol-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}
.sol-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.4px;
  line-height: 1.25;
  margin-bottom: 10px;
}
.sol-card > p {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 18px;
}
.sol-feats {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
  margin-bottom: 20px;
}
.sol-feats li {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.55;
}
.sol-feats li svg {
  color: var(--teal-dark);
  flex-shrink: 0;
  margin-top: 3px;
  width: 15px;
  height: 15px;
}
.sol-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.sol-info {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--teal-tint);
  border: 1px solid rgba(13, 148, 136, 0.18);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--teal-darker);
  letter-spacing: -0.1px;
}
.sol-info .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.16);
  flex-shrink: 0;
}
.sol-foot .btn {
  padding: 8px 14px;
  font-size: 13px;
}
.sol-note {
  text-align: center;
  margin-top: 36px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.sol-note strong {
  color: var(--slate-900);
  font-weight: 700;
}

/* ===== TECH STACK ===== */
.tech {
  padding: 60px 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.tech-head {
  text-align: center;
  margin-bottom: 28px;
}
.tech-head p {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.tech-list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.tech-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--border);
  transition: all 0.15s;
}
.tech-item:hover {
  border-color: var(--slate-400);
  background: var(--slate-50);
  transform: translateY(-1px);
}
.tech-item .ic {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-700);
  flex-shrink: 0;
}
.tech-item .tech-name {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.1px;
}
.tech-item .tech-purpose {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  padding-left: 10px;
  border-left: 1px solid var(--border);
  margin-left: 2px;
  letter-spacing: 0.1px;
}
.tech-note {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  max-width: 680px;
  margin: 24px auto 0;
  line-height: 1.65;
}

/* ===== BLOG LATEST ===== */
.blog-latest {
  padding: 64px 0;
  background: var(--bg-soft);
}
.blog-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 24px;
  flex-wrap: wrap;
}
.blog-header > div .eyebrow-text {
  display: block;
  margin-bottom: 6px;
}
.blog-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.blog-header a {
  color: var(--slate-900);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #fff;
  transition: all 0.15s;
}
.blog-header a:hover {
  border-color: var(--slate-400);
  background: var(--slate-50);
}

.blog-grid-5 {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 18px;
}
.blog-grid-5 > a:nth-child(1) {
  grid-row: 1/3;
}
.post-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
  border-color: var(--slate-300);
}
.post-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(
    135deg,
    var(--slate-800) 0%,
    var(--slate-600) 100%
  );
  position: relative;
}
.post-thumb.t2 {
  background: linear-gradient(135deg, var(--teal-darker) 0%, var(--teal) 100%);
}
.post-thumb.t3 {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
}
.post-thumb.t4 {
  background: linear-gradient(135deg, #7c2d12 0%, #ea580c 100%);
}
.post-thumb.t5 {
  background: linear-gradient(135deg, #581c87 0%, #9333ea 100%);
}
.post-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
.blog-grid-5 > a:nth-child(1) .post-thumb {
  aspect-ratio: auto;
  height: 100%;
  min-height: 240px;
}
.post-meta {
  padding: 18px 20px 0;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  flex-wrap: wrap;
}
.post-meta .cat {
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--slate-100);
  color: var(--slate-700);
  font-weight: 700;
  letter-spacing: 0.2px;
  font-size: 10.5px;
  text-transform: uppercase;
}
.post-card h3 {
  padding: 10px 20px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.2px;
  line-height: 1.32;
}
.blog-grid-5 > a:nth-child(1) h3 {
  font-size: 22px;
  letter-spacing: -0.4px;
  line-height: 1.25;
}
.post-card p {
  padding: 0 20px 20px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
  flex-grow: 1;
}

/* ===== TOPICS — 5 chủ đề ===== */
.topics {
  padding: 64px 0;
  background: var(--bg);
}
.topics-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
.topic-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px 22px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  text-align: center;
}
.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh);
  border-color: var(--slate-300);
}
.topic-card .ic {
  width: 46px;
  height: 46px;
  border-radius: 11px;
  background: var(--slate-100);
  color: var(--slate-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}
.topic-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.2px;
  margin-bottom: 4px;
}
.topic-card .count {
  font-size: 11.5px;
  color: var(--muted);
  font-weight: 500;
}

/* ===== YOUTUBE ===== */
.yt {
  padding: 64px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
}
.yt-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.yt-left .eyebrow-text {
  display: block;
  margin-bottom: 10px;
}
.yt-left h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  line-height: 1.2;
}
.yt-left p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 26px;
}
.yt-stats {
  display: flex;
  gap: 36px;
  margin-bottom: 28px;
}
.yt-stats .it .num {
  font-size: 22px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.4px;
  line-height: 1;
}
.yt-stats .it .lb {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
  margin-top: 4px;
}
.yt-thumb {
  aspect-ratio: 16/9;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #7f1d1d 0%, #dc2626 100%);
  position: relative;
  box-shadow: var(--sh-lg);
}
.yt-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
}
.yt-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #dc2626;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

/* ===== BIO ===== */
.bio {
  padding: 64px 0;
  background: var(--bg);
}
.bio-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 54px;
  align-items: start;
}
.bio-photo {
  position: sticky;
  top: 90px;
  aspect-ratio: 1/1.1;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--slate-100);
  box-shadow: var(--sh-md);
  border: 1px solid var(--border);
}
.bio-right .eyebrow-text {
  display: block;
  margin-bottom: 10px;
}
.bio-right h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  line-height: 1.2;
}
.bio-right h2 .em {
  color: var(--teal-dark);
}
.bio-right > p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 18px;
}
.bio-right > p strong {
  color: var(--slate-900);
  font-weight: 700;
}
.bio-intro {
  font-size: 16.5px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 24px;
}
.bio-audience {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
.aud-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--slate-50);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 18px;
  transition: all 0.18s;
}
.aud-card:hover {
  border-color: var(--teal);
  background: var(--teal-tint);
}
.aud-ic {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  flex-shrink: 0;
  background: #fff;
  color: var(--teal-dark);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.aud-tag {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--teal-dark);
  margin-bottom: 4px;
}
.aud-text p {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.55;
  margin: 0;
}
.bio-exp {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0;
}
.bio-exp .it {
  background: var(--slate-50);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px;
}
.bio-exp .num {
  font-size: 22px;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.3px;
  line-height: 1.1;
}
.bio-exp .lb {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
  margin-top: 6px;
  line-height: 1.4;
}
.bio-cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* ===== NEWSLETTER ===== */
.news {
  padding: 64px 0;
  background: linear-gradient(
    135deg,
    var(--slate-900) 0%,
    var(--slate-800) 100%
  );
  color: #fff;
  position: relative;
  overflow: hidden;
}
.news::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      50% 60% at 80% 0%,
      rgba(13, 148, 136, 0.16) 0%,
      transparent 60%
    ),
    radial-gradient(
      40% 50% at 20% 100%,
      rgba(217, 119, 6, 0.1) 0%,
      transparent 60%
    );
}
.news::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(
    ellipse 70% 50% at 50% 50%,
    #000 30%,
    transparent 75%
  );
}
.news-inner {
  position: relative;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.news .eyebrow-pill {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #a7f3d0;
}
.news h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: #fff;
  margin-bottom: 14px;
}
.news > p {
  font-size: 16.5px;
  color: var(--slate-300);
  margin-bottom: 28px;
  line-height: 1.6;
}
.news-form {
  display: flex;
  gap: 10px;
  max-width: 520px;
  margin: 0 auto;
}
.news-form input {
  flex: 1;
  padding: 14px 18px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.2);
  color: #fff;
  font-family: inherit;
  font-size: 14.5px;
}
.news-form input::placeholder {
  color: var(--slate-400);
}
.news-form input:focus {
  outline: 0;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.3);
}
.news-form .btn {
  flex-shrink: 0;
}
.news-privacy {
  font-size: 12px;
  color: var(--slate-400);
  margin-top: 16px;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--slate-950);
  color: var(--slate-400);
  padding: 60px 0 22px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 42px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.foot-brand .brand-mark {
  margin-bottom: 14px;
}
.foot-brand .brand-name {
  color: #fff;
}
.foot-brand .brand-tag {
  color: #475569;
}
.foot-tag-line {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--slate-400);
  line-height: 1.65;
  max-width: 300px;
}
.foot-col h5 {
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.foot-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.foot-col a {
  font-size: 13.5px;
  color: var(--slate-400);
  transition: color 0.15s;
}
.foot-col a:hover {
  color: #fff;
}
.foot-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  font-size: 12px;
  color: var(--slate-500);
}
.foot-social {
  display: flex;
  gap: 8px;
}
.foot-social a {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-400);
  transition: all 0.15s;
}
.foot-social a:hover {
  background: var(--teal-dark);
  color: #fff;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1080px) {
  .mobile-toggle,
  .mqg-mobile-toggle {
    display: flex;
  }
}
@media (max-width: 980px) {
  .hero-grid,
  .yt-grid,
  .bio-grid,
  .hub-inner,
  .proc-grid,
  .sol-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .sol-card.featured {
    transform: none;
  }
  .hub-inner {
    padding: 36px 28px;
  }
  .hub-visual {
    max-width: 280px;
  }
  .bio-photo {
    position: static;
    max-width: 320px;
  }
  .blog-grid-5 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
    gap: 14px;
  }
  .blog-grid-5 > a:nth-child(1) {
    grid-row: auto;
    grid-column: 1/-1;
  }
  .topics-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  section {
    padding-top: 48px !important;
    padding-bottom: 48px !important;
  }
  .hero {
    padding: 48px 0 40px !important;
  }
}
@media (max-width: 560px) {
  .hero {
    padding: 36px 0 32px !important;
  }
  section {
    padding-top: 40px !important;
    padding-bottom: 40px !important;
  }
  .container {
    padding: 0 18px;
  }
  h1 {
    font-size: 30px !important;
    letter-spacing: -0.8px !important;
  }
  h2 {
    font-size: 24px !important;
  }
  .section-head {
    margin-bottom: 24px;
  }
  .section-head p {
    font-size: 15px;
  }
  .bio-audience {
    grid-template-columns: 1fr;
  }
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .blog-grid-5 {
    grid-template-columns: 1fr;
  }
  .blog-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .blog-header h2 {
    font-size: 22px;
  }
  .news-form {
    flex-direction: column;
  }
  .yt-stats,
  .hero-meta {
    gap: 18px;
  }
  .hero-meta .num {
    font-size: 20px;
  }
  .hero-meta .lb {
    font-size: 11px;
  }
  .foot-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .foot-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .nav-cta .lang,
  .nav-cta .btn-ghost,
  .mqg-nav-actions .lang,
  .mqg-nav-actions .btn-ghost {
    display: none;
  }
  .proc-card {
    padding: 24px 22px 22px;
  }
  .sol-card {
    padding: 24px 22px 22px;
  }
  .sol-feats li {
    font-size: 13px;
  }

  /* Mobile premium buttons */
  .btn {
    padding: 13px 20px;
    font-size: 14px;
    border-radius: 11px;
    width: auto;
  }
  .btn-lg {
    padding: 15px 22px;
    font-size: 14.5px;
    border-radius: 12px;
  }
  .hero-cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .hero-cta .btn {
    width: 100%;
    padding: 15px 22px;
    font-size: 14.5px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .bio-cta {
    flex-direction: column;
    width: 100%;
  }
  .bio-cta .btn {
    width: 100%;
  }
  .sol-foot {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .sol-foot .btn {
    width: 100%;
    padding: 12px 18px;
  }
  .sol-info {
    align-self: center;
  }
  .nav-cta .btn-primary {
    padding: 9px 14px;
    font-size: 13px;
  }
  .nav .brand-tag,
  .mqg-header-inner .brand-tag {
    display: none;
  }
}

/* ===== WORDPRESS INTEGRATION ===== */
body.mqg-ai-page {
  margin: 0;
}
.mqg-newsletter-wrap .wpcf7 {
  max-width: 620px;
  margin: 0 auto;
}
.mqg-newsletter-wrap .wpcf7 form {
  margin: 0;
}
.mqg-newsletter-wrap .wpcf7-spinner {
  display: none;
}
.mqg-newsletter-wrap .wpcf7-response-output {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28) !important;
  margin: 14px 0 0 !important;
  padding: 9px 12px !important;
  font-size: 13px;
  border-radius: 8px;
}
.mqg-newsletter-message {
  font-size: 13px;
  color: #a7f3d0;
  margin-top: 14px;
  min-height: 20px;
}
.admin-bar .site-header {
  top: 32px;
}
@media (max-width: 782px) {
  .admin-bar .site-header {
    top: 46px;
  }
}
@media (max-width: 1080px) {
  .mqg-main-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 10001;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    width: min(380px, calc(100vw - 24px));
    height: 100dvh;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--border);
    background: #fff;
    box-shadow: -10px 0 30px rgba(15, 23, 42, 0.1);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(104%);
    transition:
      transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
      opacity 0.22s ease,
      visibility 0.22s ease;
  }
  .admin-bar .mqg-main-nav {
    top: 46px;
    height: calc(100dvh - 46px);
  }
  .mqg-main-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
  }
  .mqg-mobile-nav-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 66px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
  }
  .mqg-mobile-nav-title {
    color: var(--slate-900);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.15px;
  }
  .mqg-mobile-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
    color: var(--slate-900);
    cursor: pointer;
  }
  .mqg-nav-links {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    overflow-y: auto;
    width: 100%;
    margin: 0;
    padding: 14px;
  }
  .mqg-nav-links a {
    padding: 12px 13px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.45;
  }
  .mqg-mobile-menu-cta {
    display: block;
    padding: 14px;
    border-top: 1px solid var(--border);
    background: #fff;
  }
  .mqg-mobile-menu-cta .mqg-header-btn {
    width: 100%;
    padding: 14px 16px;
  }
  .mqg-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: block;
    background: rgba(15, 23, 42, 0.46);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.22s ease,
      visibility 0.22s ease;
  }
  .mqg-menu-overlay.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  body.mqg-menu-lock {
    overflow: hidden;
  }
}