:root {
  --bg: #f2f7fb;
  --ink: #0f172a;
  --ink-soft: #475569;
  --surface: #ffffff;
  --line: #d7e4ef;
  --line-strong: #c2d5e6;
  --deep: #081d31;
  --primary: #0f4a73;
  --accent: #ff5f2a;
  --accent-strong: #e34713;
  --zalo: #0a74ff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-soft: 0 12px 30px rgba(9, 28, 47, 0.08);
  --shadow-pop: 0 18px 38px rgba(9, 28, 47, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(circle at 6% -6%, rgba(15, 74, 115, 0.13), transparent 33%),
    radial-gradient(circle at 92% 2%, rgba(255, 95, 42, 0.12), transparent 28%),
    var(--bg);
}

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

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

section[id] {
  scroll-margin-top: 140px;
}

.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2200;
  background: #ffffff;
  color: #111827;
  padding: 0.68rem 1rem;
  border-radius: 10px;
  font-weight: 700;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.top-alert {
  background: linear-gradient(90deg, #071728, #0f3b5d);
  color: #e4edf7;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 0.8rem;
}

.top-alert p {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1300;
  background: rgba(248, 251, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(15, 74, 115, 0.12);
}

.header-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.78rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.78rem;
  min-width: 0;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: "Sora", sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), #ff8759);
  box-shadow: 0 10px 20px rgba(227, 71, 19, 0.4);
  flex-shrink: 0;
}

.brand-copy strong {
  display: block;
  font-family: "Sora", sans-serif;
  font-size: 1.05rem;
  line-height: 1.2;
}

.brand-copy small {
  display: block;
  font-size: 0.77rem;
  font-weight: 600;
  color: #45647f;
}

.header-cta {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}

.main-nav {
  border-top: 1px solid rgba(15, 74, 115, 0.1);
}

.main-nav ul {
  margin: 0;
  padding: 0.58rem 0 0.76rem;
  list-style: none;
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav ul::-webkit-scrollbar {
  display: none;
}

.main-nav a {
  display: block;
  white-space: nowrap;
  border-radius: 999px;
  padding: 0.43rem 0.74rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #173755;
  border: 1px solid rgba(15, 74, 115, 0.16);
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.active {
  color: #0b253a;
  border-color: rgba(255, 95, 42, 0.55);
  background: rgba(255, 95, 42, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.72rem 1.1rem;
  border: 1px solid transparent;
  font-size: 0.93rem;
  font-weight: 800;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

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

.btn:focus-visible {
  outline: 3px solid rgba(255, 95, 42, 0.36);
  outline-offset: 2px;
}

.btn-primary,
.btn-hotline {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), #ff7a47);
  box-shadow: 0 11px 24px rgba(227, 71, 19, 0.3);
}

.btn-primary:hover,
.btn-hotline:hover {
  background: linear-gradient(135deg, var(--accent-strong), #ff6d38);
  box-shadow: 0 14px 28px rgba(227, 71, 19, 0.42);
}

.btn-outline,
.btn-ghost {
  color: #0f3b5f;
  border-color: rgba(15, 74, 115, 0.28);
  background: rgba(255, 255, 255, 0.78);
}

.btn-outline:hover,
.btn-ghost:hover {
  color: #0d4d9a;
  border-color: rgba(10, 116, 255, 0.6);
}

.btn-full {
  width: 100%;
}

.hero,
.page-hero {
  position: relative;
  overflow: hidden;
  color: #ffffff;
  background: linear-gradient(145deg, #081d31 0%, #0f405f 48%, #15648d 100%);
}

.hero::before,
.hero::after,
.page-hero::before,
.page-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero::before,
.page-hero::before {
  width: 360px;
  height: 360px;
  top: -190px;
  left: -110px;
  background: radial-gradient(circle, rgba(255, 172, 80, 0.44), transparent 72%);
}

.hero::after,
.page-hero::after {
  width: 430px;
  height: 430px;
  right: -140px;
  bottom: -250px;
  background: radial-gradient(circle, rgba(74, 176, 255, 0.28), transparent 74%);
}

.hero {
  padding: 2.75rem 0 3.2rem;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.35rem;
  align-items: start;
}

.eyebrow {
  margin: 0 0 0.7rem;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #ffce88;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.95rem, 6vw, 3.1rem);
  line-height: 1.2;
}

.hero-lead {
  margin: 0.95rem 0 0;
  color: #dfebfb;
  max-width: 64ch;
}

.hero-actions,
.final-actions {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.hero-tags {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.hero-tags li {
  position: relative;
  padding-left: 1.3rem;
  color: #f2f8ff;
}

.hero-tags li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #ffbb58;
}

.hero-stats {
  margin-top: 1.28rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.hero-stats article {
  border-radius: 13px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.09);
  padding: 0.72rem 0.67rem;
}

.hero-stats strong {
  display: block;
  font-family: "Sora", sans-serif;
  font-size: 1.08rem;
}

.hero-stats span {
  color: #d5e5fb;
  font-size: 0.82rem;
}

.hero-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.08));
  box-shadow: var(--shadow-pop);
  padding: 1.22rem 1.08rem;
  backdrop-filter: blur(5px);
}

.hero-card h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 1.22rem;
}

.hero-card p {
  margin: 0.68rem 0 0;
  color: #e7f0ff;
}

.hero-card-list {
  margin-top: 0.95rem;
  padding-top: 0.95rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.32);
  display: grid;
  gap: 0.62rem;
}

.hero-card-list p {
  margin: 0;
  font-size: 0.9rem;
}

.page-hero {
  padding: 2.2rem 0 2.5rem;
}

.page-hero p {
  margin: 0.8rem 0 0;
  max-width: 72ch;
  color: #ddeafd;
}

.breadcrumbs {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.86rem;
  color: #c8dcf7;
}

.breadcrumbs a {
  color: #ffd496;
  font-weight: 700;
}

.section {
  padding: 3.5rem 0;
}

.section-soft {
  background: #f8fbff;
}

.section-dark {
  background: linear-gradient(145deg, #081c30, #0d3a5a 58%, #125074);
  color: #ffffff;
}

.section-head {
  max-width: 770px;
  margin-bottom: 1.3rem;
}

.section-head h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.45rem, 4vw, 2.3rem);
  line-height: 1.25;
}

.section-head p {
  margin: 0.56rem 0 0;
  color: var(--ink-soft);
}

.section-head-light p {
  color: #c4d7ee;
}

.section-head-light h2 {
  color: #ffffff;
}

.danger-list,
.article-grid,
.service-grid,
.area-grid,
.process-grid,
.quick-grid,
.post-grid {
  display: grid;
  gap: 1rem;
}

.danger-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.danger-list li {
  position: relative;
  padding: 0.95rem 1rem 0.95rem 2.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.danger-list li::before {
  content: "!";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.42rem;
  height: 1.42rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #ffffff;
  background: var(--accent);
}

.service-card,
.article-card,
.process-card,
.quick-card,
.post-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: #ffffff;
  padding: 1.14rem 1.03rem;
  box-shadow: var(--shadow-soft);
}

.service-card {
  transition: transform 0.23s ease, box-shadow 0.23s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-pop);
}

.service-card h3,
.article-card h3,
.process-card h3,
.quick-card h3,
.post-card h3 {
  margin: 0;
  font-size: 1.03rem;
  line-height: 1.42;
}

.service-card p,
.article-card p,
.process-card p,
.quick-card p,
.post-card p {
  margin: 0.56rem 0 0;
  color: var(--ink-soft);
}

.article-card a,
.post-card a,
.inline-link {
  display: inline-flex;
  margin-top: 0.68rem;
  font-weight: 800;
  color: #0f4f91;
}

.area-item {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
  color: #edf5ff;
  padding: 0.79rem 0.9rem;
  font-weight: 700;
}

.process-card span {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #ffffff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), #ff8050);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
  padding: 0 1rem;
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  font-weight: 800;
  padding: 0.95rem 0;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list p {
  margin: 0;
  padding: 0 0 1rem;
  color: var(--ink-soft);
}

.final-cta {
  position: relative;
  overflow: hidden;
  color: #ffffff;
  background: linear-gradient(140deg, #081d30, #0f3f60 58%, #14567f);
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 16%, rgba(255, 170, 78, 0.24), transparent 40%),
    radial-gradient(circle at 85% 78%, rgba(74, 176, 255, 0.22), transparent 44%);
}

.final-wrap {
  position: relative;
  z-index: 1;
  text-align: center;
}

.final-wrap h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.5rem, 5vw, 2.55rem);
  line-height: 1.25;
}

.final-wrap p {
  margin: 0.78rem auto 0;
  max-width: 780px;
  color: #d8e7f9;
}

.media-grid {
  display: grid;
  gap: 1rem;
}

.media-card {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-soft);
  background: #ffffff;
}

.media-card img {
  width: 100%;
  height: 230px;
  object-fit: cover;
}

.media-card figcaption {
  padding: 0.74rem 0.88rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.page-layout {
  display: grid;
  gap: 1.1rem;
}

.main-article,
.side-panel {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.main-article {
  padding: 1.2rem 1.1rem;
}

.main-article h2,
.main-article h3 {
  font-family: "Sora", sans-serif;
  margin: 1.1rem 0 0.5rem;
  line-height: 1.35;
}

.main-article h2:first-child {
  margin-top: 0;
}

.main-article p,
.main-article li {
  color: #334155;
}

.main-article ul,
.main-article ol {
  padding-left: 1.2rem;
  margin: 0.4rem 0 0.9rem;
}

.main-article img {
  border-radius: 14px;
  margin: 0.9rem 0;
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.side-panel {
  padding: 1rem;
}

.side-panel h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 1.02rem;
}

.side-panel p,
.side-panel li {
  color: var(--ink-soft);
}

.side-panel ul {
  margin: 0.65rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.45rem;
}

.site-footer {
  background: #06101f;
  color: #d1dced;
  padding: 2.1rem 0 1rem;
}

.footer-grid {
  display: grid;
  gap: 1rem;
}

.site-footer h3 {
  margin: 0 0 0.45rem;
  color: #ffffff;
  font-size: 1.02rem;
}

.site-footer p {
  margin: 0 0 0.36rem;
}

.site-footer a {
  color: #ffd188;
  font-weight: 700;
}

.footer-bottom {
  margin-top: 0.7rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-bottom p {
  margin: 0;
  color: #a9b9d1;
  font-size: 0.9rem;
}

.floating-contact {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 1300;
  display: grid;
  gap: 0.82rem;
}

.fab {
  position: relative;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #ffffff;
  box-shadow: var(--shadow-pop);
  transition: transform 0.2s ease;
}

.fab:hover {
  transform: translateY(-3px);
}

.fab::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.45);
  animation: pulse 1.8s ease-out infinite;
}

.fab-call {
  background: linear-gradient(135deg, var(--accent), #ff7a49);
}

.fab-call::after {
  border-color: rgba(255, 136, 94, 0.68);
}

.fab-zalo {
  background: linear-gradient(135deg, #006bff, #0fa5ff);
  font-family: "Sora", sans-serif;
  font-size: 1.45rem;
  font-weight: 800;
}

.fab-zalo::after {
  border-color: rgba(70, 174, 255, 0.68);
  animation-delay: 0.65s;
}

.fab svg {
  width: 1.72rem;
  height: 1.72rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.85;
  }

  70% {
    transform: scale(1.28);
    opacity: 0;
  }

  100% {
    transform: scale(1.3);
    opacity: 0;
  }
}

@media (min-width: 640px) {
  .danger-list,
  .quick-grid,
  .media-grid,
  .process-grid,
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .area-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .main-nav ul {
    justify-content: center;
    overflow: visible;
  }

  .hero {
    padding: 4.1rem 0;
  }

  .hero-grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: 2rem;
  }

  .section {
    padding: 4.6rem 0;
  }

  .service-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .article-grid,
  .post-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .process-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .area-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .media-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-layout {
    grid-template-columns: 1fr 320px;
    align-items: start;
  }

  .footer-grid {
    grid-template-columns: 1.1fr 0.9fr 1fr;
  }
}

@media (max-width: 760px) {
  .header-wrap {
    flex-direction: column;
    align-items: stretch;
  }

  .header-cta {
    width: 100%;
  }

  .header-cta .btn {
    flex: 1;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}