:root {
  --black: #090909;
  --ink: #171717;
  --muted: #66615c;
  --line: #eadfca;
  --cream: #fff8ec;
  --soft: #f6efe3;
  --gold: #d8a329;
  --gold-light: #f6cc56;
  --red: #d71920;
  --steel: #d9d5cc;
  --white: #ffffff;
  --logo-gradient: linear-gradient(105deg, #050505 0%, #1a1410 28%, #d71920 53%, #f6cc56 78%, #d8a329 100%);
  --shadow: 0 18px 48px rgba(24, 18, 8, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
}

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

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

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  background: var(--logo-gradient);
  color: var(--white);
  font-size: 14px;
}

.topbar__inner,
.social-links,
.topbar-contact,
.social-links a,
.topbar-contact a {
  display: flex;
  align-items: center;
  gap: 18px;
}

.topbar__inner {
  justify-content: space-between;
  min-height: 42px;
}

.social-links a,
.hotline,
.email-link {
  color: #fff8dc;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.28);
}

.social-links a,
.topbar-contact a {
  gap: 7px;
  white-space: nowrap;
}

.topbar-icon {
  width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 22px;
  border-radius: 50%;
  background: rgba(255, 248, 220, 0.18);
  color: #fff8dc;
  font-size: 13px;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 248, 220, 0.28);
}

.topbar-icon--facebook {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
}

.topbar-icon--youtube {
  font-size: 11px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background:
    linear-gradient(90deg, rgba(255, 248, 236, 0.97), rgba(255, 248, 236, 0.9)),
    var(--logo-gradient);
  border-bottom: 1px solid rgba(216, 163, 41, 0.28);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  width: 250px;
  display: flex;
  align-items: center;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.main-nav > a,
.nav-item > a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 15px;
  border-radius: 8px;
  color: #18120a;
}

.main-nav > a:hover,
.nav-item:hover > a,
.main-nav [aria-current="page"] {
  background: var(--logo-gradient);
  color: var(--gold-light);
}

.nav-item {
  position: relative;
}

.submenu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 230px;
  padding: 10px;
  background: var(--white);
  border: 1px solid rgba(216, 163, 41, 0.32);
  box-shadow: var(--shadow);
  border-radius: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: 0.2s ease;
}

.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--ink);
}

.submenu a:hover {
  background: var(--soft);
  color: #9a1116;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--gold);
  background: var(--logo-gradient);
  color: var(--gold-light);
  border-radius: 8px;
  width: 44px;
  min-height: 42px;
  padding: 0;
  font-weight: 600;
}

.nav-toggle span {
  width: 21px;
  height: 2px;
  border-radius: 999px;
  background: #fff8dc;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero-slider {
  position: relative;
  background: var(--black);
  overflow: hidden;
}

.slides {
  position: relative;
  display: flex;
  transform: translateX(calc(var(--slide-index, 0) * -100%));
  transition: transform 0.72s ease;
}

.slide {
  position: relative;
  flex: 0 0 100%;
}

.slide img {
  width: 100%;
  object-fit: cover;
}

.slide::after {
  display: none;
}

.slide__content {
  display: none;
  position: absolute;
  z-index: 2;
  left: max(16px, calc((100vw - 1180px) / 2));
  top: 50%;
  transform: translateY(-50%);
  width: min(620px, calc(100% - 32px));
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: #b31319;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.section-kicker::before {
  content: attr(data-icon);
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: var(--logo-gradient);
  color: var(--white);
  font-size: 17px;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(117, 28, 22, 0.16);
}

.slide__content .eyebrow,
.cta-section .section-kicker {
  color: var(--gold-light);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 600;
}

h1 {
  font-size: clamp(31px, 3vw, 51px);
  margin-bottom: 18px;
}

h2 {
  font-size: clamp(25px, 2vw, 35px);
  margin-bottom: 18px;
}

h3 {
  font-size: 18px;
  line-height: 1.25;
  font-weight: 600;
}

.slide__content p {
  font-size: 16px;
  max-width: 560px;
}

.hero-actions,
.cta-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 15px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size:12pt;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--black);
  box-shadow: 0 14px 30px rgba(216, 163, 41, 0.28);
}

.btn-outline {
  background: transparent;
  color: var(--gold-light);
  border-color: var(--gold);
}

.soft-band .btn-outline,
.load-more-wrap .btn-outline {
  color: var(--black);
  border-color: var(--gold);
}

.slider-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.slider-dots button {
  width: 36px;
  height: 5px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
}

.slider-dots button.is-active {
  background: var(--logo-gradient);
}

.section {
  padding: 86px 0;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  align-items: center;
  gap: 52px;
}

.split-layout--reverse {
  grid-template-columns: minmax(320px, 520px) minmax(0, 1fr);
}

.section-copy p {
  color: #38332d;
}

.dark-band {
  background: linear-gradient(135deg, #050505 0%, #18110d 42%, #5a1013 72%, #d8a329 100%);
  color: var(--white);
}

.dark-band .section-copy p,
.dark-band li {
  color: #efe7d7;
}

.soft-band {
  background:
    linear-gradient(135deg, rgba(255, 248, 236, 0.96), rgba(246, 239, 227, 0.88)),
    var(--logo-gradient);
}

.media-panel {
  margin: 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
}

.media-panel img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.feature-strip span {
  min-height: 54px;
  display: grid;
  place-items: center;
  padding: 7px;
  border-radius: 8px;
  background: var(--logo-gradient);
  color: #fff;
  font-weight: 600;
  text-align: center;
}

.check-list,
.audience-list {
  padding-left: 20px;
  margin: 22px 0 0;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 36px;
}

.section-heading--with-action {
  max-width: none;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.text-link {
  font-weight: 600;
  color: #a61217;
  border-bottom: 2px solid var(--gold);
}

.use-grid,
.why-grid,
.news-grid,
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.sanpham-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.use-card,
.why-grid article,
.news-card,
.video-card {
  background: var(--white);
  border: 1px solid rgba(216, 163, 41, 0.22);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 34px rgba(24, 18, 8, 0.08);
}

.use-card img,
.news-card img {
  width: 100%;
  aspect-ratio: 3 / 3;
  object-fit: cover;
}

.use-card h3,
.use-card p,
.news-card__body,
.why-grid article,
.video-card h3 {
  padding: 0 20px;
}

.use-card h3 {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.use-card h3::before,
.why-grid h3::before,
.news-card h3::before,
.video-card h3::before,
.mode-list h3::before,
.footer h3::before {
  content: "";
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  border-radius: 50%;
  background: var(--logo-gradient);
  box-shadow: 0 0 0 4px rgba(216, 163, 41, 0.16);
}

.use-card p {
  padding-bottom: 22px;
}

.mode-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 22px 0;
}

.mode-list article {
  padding: 20px;
  border-radius: 8px;
  background: var(--white);
  border: 1px solid var(--line);
}

.note {
  padding: 16px 18px;
  background: #fff3d2;
  border-left: 4px solid var(--gold);
  border-radius: 8px;
  font-weight: 600;
}

.spec-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 32px;
  align-items: stretch;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.spec-table th,
.spec-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.spec-table th {
  width: 38%;
  background: var(--logo-gradient);
  color: var(--gold-light);
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.spec-wrap img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.why-section {
  background: linear-gradient(135deg, #050505 0%, #17110d 40%, #701116 72%, #d8a329 100%);
  color: var(--white);
}

.why-section .section-kicker {
  color: var(--gold-light);
}

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

.why-grid article {
  padding: 26px 22px;
  background: rgba(27, 26, 23, 0.9);
  border-color: rgba(246, 204, 86, 0.26);
}

.why-grid p {
  color: #efe7d7;
}

.news-card__body {
  padding-top: 20px;
  padding-bottom: 22px;
}

.news-card time {
  display: block;
  color: #9a1116;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.news-card p {
  color: var(--muted);
}

.news-card a {
  color: #a61217;
  font-size:11pt;
}

.news-card.is-extra {
  display: none;
}

.news-grid.show-all .news-card.is-extra {
  display: block;
}

.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--black);
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-card h3 {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding-top: 18px;
  padding-bottom: 20px;
}

.video-page-hero {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.84), rgba(0, 0, 0, 0.48)),
    url("images/may-xay-3.jpg") center/cover;
}

.cta-section {
  padding: 72px 0;
  background: var(--logo-gradient);
  color: var(--white);
}

.cta-inner {
  justify-content: space-between;
}

.cta-inner div {
  max-width: 720px;
}

.cta-inner p {
  color: #f5e9d1;
}

.footer {
  background: linear-gradient(135deg, #050505 0%, #140f0d 42%, #421014 70%, #d8a329 130%);
  color: #eee7da;
  padding-top: 52px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}

.footer-logo {
  width: 220px;
  margin-bottom: 16px;
  padding: 8px;
  background: var(--cream);
  border-radius: 8px;
}

.footer h3 {
  color: var(--gold-light);
}

.footer a {
  display: block;
  margin-bottom: 8px;
  color: #eee7da;
}

.copyright {
  margin-top: 36px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  color: #b9b0a2;
}

.page-hero {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.84), rgba(0, 0, 0, 0.48)),
    url("images/may-xay-1.jpg") center/cover;
  color: var(--white);
}

.page-hero__inner {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1180px;
}

.page-hero h1 {
  max-width: 780px;
}

.page-hero p {
  max-width: 660px;
  color: #f3ead9;
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

.article-page {
  padding: 70px 0 90px;
  background: var(--cream);
}

.article-shell {
  max-width: 920px;
}

.article-meta {
  color: #a61217;
  font-weight: 600;
  margin-bottom: 16px;
}

.article-shell h1 {
  color: var(--black);
  font-size: clamp(34px, 4vw, 56px);
}

.article-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin: 28px 0;
}

.article-content {
  background: var(--white);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 44px);
  box-shadow: var(--shadow);
}

.article-content h2 {
  font-size: 28px;
  margin-top: 32px;
}

.article-content ul {
  padding-left: 20px;
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 18px;
    background: var(--cream);
    border-bottom: 1px solid var(--line);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav > a,
  .nav-item > a {
    border-radius: 6px;
  }

  .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    background: transparent;
    padding: 0 0 8px 14px;
  }

  .brand {
    width: 190px;
  }

  .split-layout,
  .split-layout--reverse,
  .spec-wrap {
    grid-template-columns: 1fr;
  }

  .use-grid,
  .news-grid,
  .why-grid,
  .sanpham-grid,
  .video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }


  .feature-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 24px, 1180px);
  }

  .topbar__inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 2px;
    padding: 8px 0;
  }

  .topbar-contact {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .slides,
  .slide img {
    height: auto;
  }

  .slide img {
    object-fit: contain;
    background: var(--black);
  }

  .slide::after {
    display: none;
  }

  .slide__content {
    top: auto;
    bottom: 78px;
    transform: none;
  }

  .section {
    padding: 62px 0;
  }

  .use-grid,
  .news-grid,
  .why-grid,
  .video-grid,
  .sanpham-grid,
  .mode-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section-heading--with-action,
  .cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }

  .spec-table th {
    padding-bottom: 8px;
  }

  .spec-table td {
    padding-top: 8px;
  }
}