:root {
  --bg: #f2f8ff;
  --bg-2: #e8f2ff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --ink: #123a63;
  --text: #35597d;
  --muted: #5f7ea0;
  --line: rgba(102, 153, 205, 0.3);
  --line-strong: rgba(64, 139, 215, 0.45);
  --brand: #2f96f0;
  --brand-2: #72bcff;
  --brand-deep: #1f7fd2;
  --zalo: #0497e8;
  --ok: #16a34a;
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 10px 30px rgba(38, 104, 170, 0.12);
  --shadow-card: 0 16px 36px rgba(28, 88, 146, 0.15);
  --container: min(1220px, 92vw);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  background:
    radial-gradient(1200px 520px at -16% -10%, rgba(112, 184, 255, 0.25), transparent 62%),
    radial-gradient(900px 460px at 112% -12%, rgba(169, 219, 255, 0.3), transparent 60%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-2) 44%, #edf5ff 100%);
  min-height: 100vh;
}

.site-atmos {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 100vmax;
  filter: blur(62px);
  opacity: 0.55;
}

.orb-a {
  width: 420px;
  height: 420px;
  left: -120px;
  top: -140px;
  background: rgba(133, 198, 255, 0.5);
}

.orb-b {
  width: 520px;
  height: 520px;
  right: -180px;
  top: 22%;
  background: rgba(186, 228, 255, 0.42);
}

.orb-c {
  width: 520px;
  height: 520px;
  left: 34%;
  bottom: -240px;
  background: rgba(147, 201, 252, 0.3);
}

.top-alert {
  display: none;
}

.main-flow {
  position: relative;
  z-index: 1;
}

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

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

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: clamp(48px, 7vw, 88px) 0;
  position: relative;
}

.section-compact {
  padding: 12px 0 0;
}

.section-divider {
  padding: 16px 0 6px;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.48), rgba(240, 249, 255, 0.66));
  border-top: 1px solid rgba(117, 176, 233, 0.24);
  border-bottom: 1px solid rgba(117, 176, 233, 0.24);
  backdrop-filter: blur(4px);
}

.section-head {
  margin-bottom: 24px;
}

.section-head h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: clamp(1.48rem, 2.4vw, 2.16rem);
  letter-spacing: -0.02em;
  line-height: 1.28;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(247, 252, 255, 0.88);
  border-bottom: 1px solid rgba(104, 159, 215, 0.24);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-weight: 700;
  font-size: 1.06rem;
}

.logo-dot {
  width: 15px;
  height: 15px;
  border-radius: 4px;
  transform: rotate(45deg);
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 0 8px rgba(106, 179, 246, 0.2);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav > a {
  color: #325b84;
  padding: 9px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.9rem;
  transition: 180ms ease;
}

.main-nav > a:hover,
.main-nav > a.active {
  background: rgba(194, 228, 255, 0.56);
  border-color: rgba(88, 152, 220, 0.5);
  color: #17466f;
}

.nav-cta {
  display: inline-flex;
  gap: 8px;
  margin-left: 6px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(95, 155, 216, 0.45);
  background: rgba(255, 255, 255, 0.78);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #2c5a84;
}

.hero-block {
  padding: clamp(18px, 4vw, 34px) 0 clamp(18px, 4vw, 28px);
}

.info-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.info-ribbon p {
  margin: 0;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(110, 165, 223, 0.44);
  color: #3a638d;
  font-size: 0.84rem;
}

.info-ribbon strong {
  color: #1f5f95;
}

.hero-shell {
  display: grid;
  gap: 22px;
  padding: clamp(16px, 2.8vw, 32px);
  border: 1px solid rgba(106, 166, 226, 0.42);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.84) 0%, rgba(243, 250, 255, 0.88) 72%),
    repeating-linear-gradient(90deg, rgba(129, 190, 245, 0.08) 0, rgba(129, 190, 245, 0.08) 1px, transparent 1px, transparent 22px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  position: relative;
}

.hero-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, transparent 0 68%, rgba(150, 214, 255, 0.24) 68% 100%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  display: inline-block;
  margin-bottom: 11px;
  padding: 7px 11px;
  border-radius: 8px;
  border: 1px solid rgba(96, 159, 224, 0.42);
  background: rgba(188, 225, 255, 0.46);
  color: #2a6ca5;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero-copy h1 {
  margin: 0 0 13px;
  color: #133f67;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: clamp(1.86rem, 4.3vw, 3.1rem);
  letter-spacing: -0.028em;
  line-height: 1.13;
}

.hero-copy p {
  margin: 0;
  color: #3d638a;
  max-width: 62ch;
}

.hero-actions {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.hero-points li {
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(106, 166, 226, 0.35);
  border-left: 4px solid #7cbfff;
  border-radius: 10px;
  color: #365f86;
  padding: 10px 12px;
  font-size: 0.95rem;
}

.hero-stage {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.hero-frame {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(100, 162, 224, 0.46);
  box-shadow: var(--shadow-soft);
  background: rgba(229, 245, 255, 0.72);
}

.hero-frame img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.hero-badge {
  margin: 0;
  padding: 12px;
  border-top: 1px solid rgba(109, 172, 230, 0.44);
  background: rgba(239, 249, 255, 0.9);
  color: #225986;
  display: grid;
  gap: 3px;
}

.hero-badge strong {
  font-size: 0.98rem;
  line-height: 1.2;
}

.hero-badge span {
  color: #3f709d;
  font-size: 0.84rem;
}

.hero-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.hero-strip article {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(108, 171, 233, 0.44);
  background: rgba(255, 255, 255, 0.8);
  text-align: center;
}

.hero-strip strong {
  display: block;
  color: #2168a2;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: 1.06rem;
  line-height: 1.2;
}

.hero-strip span {
  color: #4e759b;
  font-size: 0.78rem;
}

.hero-tail {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px dashed rgba(98, 162, 226, 0.6);
  background: rgba(255, 255, 255, 0.68);
}

.hero-tail p {
  margin: 0;
  color: #3a638a;
}

.divider-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(117, 177, 235, 0.86), transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 11px 17px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.93rem;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.btn-call {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.btn-zalo {
  color: #fff;
  background: linear-gradient(135deg, #2094e9, var(--zalo));
}

.btn-ghost {
  color: #2f608c;
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(96, 158, 223, 0.44);
}

.quick-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid rgba(102, 163, 225, 0.4);
  background: rgba(255, 255, 255, 0.74);
}

.glass-card {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid rgba(108, 169, 231, 0.4);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  padding: 20px;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.glass-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, rgba(67, 151, 227, 0.8), rgba(127, 197, 255, 0.65));
}

.glass-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 38px rgba(22, 82, 142, 0.18);
}

.glass-card h3 {
  margin: 0 0 10px;
  color: #1f547f;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: 1.09rem;
  line-height: 1.35;
}

.glass-card p {
  margin: 0;
  color: #406a93;
}

.card-photo {
  margin: -20px -20px 14px;
  overflow: hidden;
  border-bottom: 1px solid rgba(104, 167, 230, 0.35);
}

.card-photo img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 260ms ease;
}

.glass-card:hover .card-photo img {
  transform: scale(1.05);
}

.inline-photo {
  margin: 14px 0 6px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(102, 165, 229, 0.42);
  box-shadow: var(--shadow-card);
  background: rgba(237, 248, 255, 0.9);
}

.inline-photo img {
  width: 100%;
  max-height: 540px;
  object-fit: cover;
}

.card-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}

.faq-grid {
  display: grid;
  gap: 16px;
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  font-weight: 700;
  color: #2a74b3;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.card-actions .btn {
  flex: 1 1 120px;
  padding: 10px 12px;
  min-height: 42px;
}

.benefit-grid,
.check-list,
.step-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.benefit-grid li,
.check-list li,
.step-list li {
  list-style-position: inside;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(103, 163, 226, 0.36);
  border-radius: 10px;
  padding: 12px 14px;
}

.step-list li {
  list-style-type: decimal;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(104, 165, 226, 0.42);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-soft);
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

table th,
table td {
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(103, 164, 226, 0.28);
  padding: 14px;
  color: #3f678f;
}

table th {
  background: rgba(197, 227, 255, 0.58);
  color: #1f557f;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-weight: 700;
}

.faq-item {
  border: 1px solid rgba(102, 164, 226, 0.4);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.8);
  padding: 14px 16px;
}

.faq-item summary {
  cursor: pointer;
  color: #245b88;
  font-weight: 700;
}

.faq-item p {
  margin: 12px 0 0;
  color: #426b92;
}

.article-wrap {
  display: grid;
  gap: 10px;
}

.article-wrap h2 {
  margin: 20px 0 8px;
  color: #204f7a;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: clamp(1.34rem, 2vw, 1.78rem);
}

.article-wrap h3 {
  margin: 12px 0 6px;
  color: #2d5f8c;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
  font-size: clamp(1.04rem, 1.55vw, 1.22rem);
}

.article-wrap p {
  margin: 0;
  color: #456d96;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 12px;
  font-size: 0.85rem;
  color: #5d7d9e;
}

.breadcrumb a {
  color: #2f79b8;
  font-weight: 700;
}

.cta-band {
  padding: clamp(34px, 6vw, 56px) 0;
}

.cta-inner {
  display: grid;
  gap: 14px;
  align-items: center;
  padding: 24px;
  border-radius: 20px;
  border: 1px solid rgba(93, 161, 230, 0.42);
  background:
    linear-gradient(125deg, rgba(46, 147, 236, 0.9), rgba(114, 190, 255, 0.9)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.12) 0, rgba(255, 255, 255, 0.12) 1px, transparent 1px, transparent 16px);
  color: #f4fbff;
  box-shadow: var(--shadow-card);
}

.cta-inner h2 {
  margin: 0 0 8px;
  color: #fff;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
}

.cta-inner p {
  margin: 0;
  color: rgba(245, 252, 255, 0.96);
}

.contact-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.contact-list.big li {
  border: 1px solid rgba(103, 164, 226, 0.38);
  background: rgba(255, 255, 255, 0.76);
  border-radius: 10px;
  padding: 10px 12px;
}

.section-action {
  margin-top: 22px;
  display: flex;
  justify-content: center;
}

.contact-layout {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 600;
  color: #345e87;
}

input,
textarea {
  font: inherit;
  color: #2f5d86;
  background: var(--panel-strong);
  border: 1px solid rgba(100, 162, 226, 0.5);
  border-radius: 10px;
  padding: 12px 14px;
}

input::placeholder,
textarea::placeholder {
  color: #7191b2;
}

textarea {
  resize: vertical;
}

.form-message {
  min-height: 24px;
  margin: 6px 0 0;
  color: #2b72ae;
  font-weight: 700;
}

.map-wrap {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(102, 164, 226, 0.42);
  box-shadow: var(--shadow-soft);
}

.map-wrap iframe {
  width: 100%;
  min-height: 360px;
  border: 0;
  display: block;
}

.site-footer {
  margin-top: 40px;
  background: linear-gradient(158deg, #2d8de0, #4aa8f2 52%, #6fbfff);
  color: #eff8ff;
  border-top: 1px solid rgba(255, 255, 255, 0.38);
}

.footer-grid {
  display: grid;
  gap: 22px;
  padding: 34px 0 24px;
}

.site-footer h3 {
  margin: 0 0 10px;
  color: #fff;
  font-family: "Sora", "Noto Sans", Arial, sans-serif;
}

.site-footer p {
  margin: 0;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.site-footer a {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  padding: 14px 0;
  font-size: 0.9rem;
}

.floating-tools {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 82;
  display: grid;
  gap: 10px;
}

.tool-btn {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow-card);
  isolation: isolate;
}

.tool-btn::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(119, 183, 243, 0.6);
  opacity: 0;
  transform: scale(0.72);
  animation: pulseRing 1.8s ease-out infinite;
  z-index: -1;
}

.tool-btn.call {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.tool-btn.zalo {
  background: linear-gradient(135deg, #1c90e3, var(--zalo));
}

.tool-btn.call::before {
  border-color: rgba(118, 183, 244, 0.65);
  animation-delay: 0.15s;
}

.tool-btn.zalo::before {
  border-color: rgba(83, 171, 241, 0.62);
}

@keyframes pulseRing {
  0% {
    opacity: 0.7;
    transform: scale(0.74);
  }
  80% {
    opacity: 0;
    transform: scale(1.2);
  }
  100% {
    opacity: 0;
    transform: scale(1.23);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 768px) {
  .hero-shell {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: stretch;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-layout {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

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

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1023px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    right: 12px;
    left: 12px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border-radius: 14px;
    border: 1px solid rgba(104, 166, 230, 0.5);
    background: rgba(246, 252, 255, 0.95);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    transform: scale(0.98);
    opacity: 0;
    pointer-events: none;
    transition: 180ms ease;
  }

  .main-nav.open {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
  }

  .main-nav > a {
    border-radius: 10px;
    border: 1px solid rgba(106, 167, 231, 0.4);
    background: rgba(255, 255, 255, 0.82);
  }

  .nav-cta {
    margin-top: 8px;
    margin-left: 0;
    display: grid;
  }
}

@media (max-width: 767px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 38px 0;
  }

  .hero-shell {
    border-radius: 18px;
    padding: 16px;
  }

  .hero-copy h1 {
    font-size: clamp(1.7rem, 6.7vw, 2.2rem);
  }

  .hero-strip {
    grid-template-columns: 1fr;
  }

  .hero-strip article {
    text-align: left;
  }

  .btn {
    width: 100%;
  }

  .floating-tools {
    right: 10px;
    bottom: 10px;
  }

  .tool-btn {
    width: 54px;
    height: 54px;
  }
}