/* Process - nen tang: reset nhe, chu, khung trang, header, footer, grain */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--bg);
  overflow-x: hidden;
}

img, picture, video { display: block; max-width: 100%; }
img { height: auto; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }

::selection { background: var(--accent); color: #ffffff; }

:focus-visible { outline: 2px solid var(--accent-deep); outline-offset: 3px; }

/* ---- chu ---- */
.display-1, .display-2, .display-3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.display-1 { font-size: var(--fs-display-1); line-height: 1.03; }
.display-2 { font-size: var(--fs-display-2); line-height: 1.08; }
.display-3 { font-size: var(--fs-display-3); line-height: 1.15; }
.display-1 em, .display-2 em {
  font-style: italic;
  font-weight: 500;
  /* chong cat duoi chu nghieng (y, g, dau duoi tieng Viet) */
  line-height: 1.1;
}
.lead { font-size: var(--fs-lead); line-height: 1.55; }
.caption {
  font-size: var(--fs-caption);
  line-height: 1.5;
  letter-spacing: .02em;
}
.eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .22em;
}
p { max-width: 62ch; }

/* mask hien tung dong: wrapper che, phan dem chong cat duoi chu */
.line {
  display: block;
  overflow: hidden;
  padding-bottom: .12em;
  margin-bottom: -.12em;
}
.line > .line__in { display: block; }

/* ---- khung ---- */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background-color: var(--accent-deep);
  color: #ffffff;
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

/* ---- grain ---- */
.grain {
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: .035;
  background-image: url("data:image/png;base64,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");
  background-repeat: repeat;
  background-size: 64px 64px;
}

/* ---- starfield: da go theo dinh huong moi (giu class de khoi vo layout) ---- */
.starfield { position: relative; }
.starfield::before { content: none; }

/* ---- header ---- */
.site-header {
  position: fixed;
  top: 0; right: 0; left: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  /* mac dinh (khong JS): nen dac an toan tren moi nen */
  background-color: var(--night);
  color: var(--bone);
  transition: background-color .3s ease;
}
html.js .site-header { background-color: transparent; }
html.js .site-header.is-scrolled { background-color: var(--night); }
@supports ((-webkit-backdrop-filter: blur(8px)) or (backdrop-filter: blur(8px))) {
  html.js .site-header.is-scrolled {
    background-color: rgba(14, 42, 51, .88);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
  }
}

.site-header__bar {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .3em;
  color: var(--bone);
  display: inline-flex;
  align-items: center;
}
/* logo teal thay wordmark chu */
.site-logo {
  display: block;
  height: 26px;
  width: auto;
}
.site-footer .site-logo { height: 24px; }
@media (min-width: 1024px) {
  .site-logo { height: 30px; }
}
.site-nav { display: none; }
.site-header__brand { position: relative; }
.site-header__brandline { display: none; }

@media (min-width: 1024px) {
  /* header kieu apa: cac doan vach gan lien nhau thanh mot duong chay suot chieu ngang,
     don sac trang nga (khong vang), logo la phan doan dau tien (do day theo phan mo man) */
  .site-header, .site-header__bar { height: 96px; }
  .site-header__brand {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
    width: clamp(220px, 25vw, 380px);
    height: 96px;
    font-size: .9375rem;
    font-weight: 500;
    letter-spacing: .28em;
  }
  .site-header__brandline { display: block; }
  .site-nav {
    display: flex;
    flex: 1 1 auto;
    margin-left: 14px;
    gap: 14px;
  }
  .site-nav__item {
    position: relative;
    flex: 1 1 0;
    display: flex;
    align-items: center;
    height: 96px;
    padding-bottom: 10px;
    font-size: .8125rem;
    font-weight: 400;
    letter-spacing: .02em;
    color: rgba(236, 231, 220, .55);
    transition: color .3s ease;
    white-space: nowrap;
  }
  .site-nav__label { display: inline-flex; align-items: center; gap: 10px; }
  .site-nav__label::before {
    content: "";
    width: 4px;
    height: 4px;
    border: 1px solid currentColor;
    border-radius: 50%;
    flex: 0 0 auto;
    opacity: .75;
  }
  .site-nav__item:hover,
  .site-nav__item:focus-visible,
  .site-nav__item.is-active { color: var(--bone); }
  .site-nav__track {
    position: absolute;
    right: 0; bottom: 26px; left: 0;
    height: 1px;
    background-color: rgba(236, 231, 220, .22);
  }
  .site-nav__fill {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background-color: rgba(236, 231, 220, .95);
    transform: scaleX(0);
    transform-origin: left center;
  }
}

/* nut mo menu mobile */
.menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding-left: 8px;
  padding-right: 8px;
  color: var(--bone);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.menu-btn__lines {
  display: inline-block;
  width: 22px;
  position: relative;
  height: 10px;
}
.menu-btn__lines::before, .menu-btn__lines::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background-color: currentColor;
  transition: transform .3s ease;
}
.menu-btn__lines::before { top: 0; }
.menu-btn__lines::after { bottom: 0; }
@media (min-width: 1024px) { .menu-btn { display: none; } }

/* menu mobile fullscreen: hien bang opacity/visibility, khong transform */
.mobile-menu {
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: var(--z-menu);
  background-color: var(--night);
  color: var(--bone);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility 0s linear .35s;
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity .35s ease;
}
.mobile-menu__close {
  position: absolute;
  top: 14px;
  right: var(--pad-x);
  min-height: 44px;
  min-width: 44px;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.mobile-menu nav { display: flex; flex-direction: column; gap: 8px; }
.mobile-menu nav a {
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 3rem);
  line-height: 1.3;
  padding-top: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--hairline-dark);
}
.mobile-menu .btn { margin-top: 28px; align-self: flex-start; }

/* ---- footer ---- */
.site-footer {
  background-color: var(--night);
  color: var(--bone-soft);
  border-top: 1px solid var(--hairline-dark);
}
.site-footer__grid {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 48px;
  padding-bottom: 48px;
}
.site-footer .wordmark { color: var(--bone); }
.site-footer a:hover { color: var(--bone); }
@media (min-width: 768px) {
  .site-footer__grid {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---- giam chuyen dong toan cuc ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}