@font-face {
  font-family: "Atkinson";
  src: url("/assets/fonts/atkinson-regular.woff") format("woff");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

@font-face {
  font-family: "Atkinson";
  src: url("/assets/fonts/atkinson-bold.woff") format("woff");
  font-display: swap;
  font-style: normal;
  font-weight: 700;
}

:root {
  --ink: #f4f7ec;
  --muted: rgba(244, 247, 236, 0.7);
  --line: rgba(244, 247, 236, 0.24);
  --acid: #d9ff57;
  --ground: #03120d;
  --edge: clamp(1.25rem, 4vw, 4.5rem);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--ground);
}

body {
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--ground);
  font-family: "Atkinson", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  color: inherit;
}

a {
  text-decoration: none;
}

button {
  font: inherit;
}

.field,
.field__layer,
.field__wash,
.field__grain {
  position: fixed;
  inset: 0;
}

.field {
  z-index: 0;
  overflow: hidden;
  background: #06331f;
}

.field__layer {
  inset: -8%;
  background-position: center;
  background-size: cover;
  opacity: 0;
  transform: scale(1.08);
  filter: saturate(1.12) contrast(1.05) blur(2px);
  will-change: opacity, transform, filter;
  animation: field-shift 40s infinite both;
}

.field__layer--1 {
  background-image: url("/assets/field-1.webp");
  animation-delay: -2s;
}

.field__layer--2 {
  background-image: url("/assets/field-2.webp");
  animation-delay: 6s;
}

.field__layer--3 {
  background-image: url("/assets/field-3.webp");
  animation-delay: 14s;
}

.field__layer--4 {
  background-image: url("/assets/field-4.webp");
  animation-delay: 22s;
}

.field__layer--5 {
  background-image: url("/assets/field-5.webp");
  animation-delay: 30s;
}

.field__wash {
  background:
    radial-gradient(circle at var(--pointer-x, 72%) var(--pointer-y, 18%), transparent 0 8%, rgba(2, 24, 16, 0.06) 32%, rgba(1, 12, 9, 0.36) 72%),
    linear-gradient(90deg, rgba(2, 13, 9, 0.82) 0%, rgba(2, 13, 9, 0.68) 55%, rgba(2, 13, 9, 0.62) 100%);
  transition: background 500ms ease;
}

.field__grain {
  opacity: 0.2;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.shell {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 100svh;
  grid-template-rows: auto 1fr auto;
  padding: 0 var(--edge);
}

.masthead {
  display: flex;
  min-height: 7rem;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.17em;
  line-height: 0.9;
}

.brand__mark {
  width: 2.25rem;
  height: 2.25rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.brand em {
  display: block;
  margin-top: 0.42rem;
  color: var(--muted);
  font-size: 0.56rem;
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.31em;
}

.masthead__meta {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 3rem);
}

.signal {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal i {
  width: 0.46rem;
  height: 0.46rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 0 rgba(217, 255, 87, 0.7);
  animation: ping 2.8s ease-out infinite;
}

.language {
  display: flex;
  gap: 0.55rem;
  padding: 0.45rem 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}

.language span {
  opacity: 0.45;
  transition: opacity 180ms ease;
}

.language .language__en,
.language[aria-pressed="true"] .language__vi {
  opacity: 1;
}

.language[aria-pressed="true"] .language__en {
  opacity: 0.45;
}

.language:hover span,
.language:focus-visible span {
  opacity: 1;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.15fr) minmax(20rem, 1.2fr) minmax(17rem, 0.55fr);
  gap: clamp(2rem, 5vw, 6rem);
  align-items: end;
  padding: clamp(4rem, 9vh, 8rem) 0 clamp(3.5rem, 8vh, 7rem);
}

.hero__index {
  align-self: start;
  padding-top: 0.45rem;
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  writing-mode: vertical-rl;
}

.eyebrow,
.contact > p {
  margin: 0 0 1.5rem;
  color: var(--acid);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1 {
  max-width: 10ch;
  margin: 0;
  font-size: clamp(4.2rem, 8.3vw, 9.2rem);
  font-weight: 400;
  letter-spacing: -0.068em;
  line-height: 0.8;
  text-wrap: balance;
}

.statement {
  max-width: 41rem;
  margin: clamp(2.3rem, 5vh, 4.5rem) 0 0;
  color: rgba(244, 247, 236, 0.84);
  font-size: clamp(1.02rem, 1.4vw, 1.35rem);
  line-height: 1.55;
  text-wrap: pretty;
}

.contact {
  align-self: end;
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

.contact > p {
  margin-bottom: 0.9rem;
  color: var(--muted);
}

.contact h2 {
  margin: 0 0 1.8rem;
  font-size: clamp(1.55rem, 2.3vw, 2.35rem);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.contact__links {
  display: grid;
}

.contact__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.82rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 180ms ease, padding 180ms ease;
}

.contact__links a:last-child {
  border-bottom: 1px solid var(--line);
}

.contact__links a:hover,
.contact__links a:focus-visible {
  padding-right: 0.45rem;
  color: var(--acid);
}

.footer {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 5px;
}

@keyframes field-shift {
  0%, 15% {
    opacity: 0;
    transform: scale(1.12) translate3d(-1.5%, 1%, 0) rotate(-0.35deg);
    filter: saturate(1.1) contrast(1.04) blur(7px);
  }
  20%, 35% {
    opacity: 1;
  }
  40%, 100% {
    opacity: 0;
    transform: scale(1.03) translate3d(1.5%, -1%, 0) rotate(0.35deg);
    filter: saturate(1.25) contrast(1.08) blur(1px);
  }
}

@keyframes ping {
  70%, 100% {
    box-shadow: 0 0 0 0.5rem rgba(217, 255, 87, 0);
  }
}

@media (max-width: 900px) {
  .field__layer {
    filter: saturate(1.06) contrast(1.03);
  }
  .masthead {
    min-height: 6rem;
  }

  .signal span {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    align-items: start;
    padding: clamp(4rem, 10vh, 6rem) 0 4rem;
  }

  .hero__index {
    display: none;
  }

  h1 {
    font-size: clamp(4rem, 15vw, 7rem);
  }

  .statement {
    max-width: 34rem;
  }

  .contact {
    max-width: 30rem;
  }
}

@media (max-width: 540px) {
  :root {
    --edge: 1.2rem;
  }

  .masthead {
    min-height: 5.25rem;
  }

  .brand {
    gap: 0.55rem;
    font-size: 0.68rem;
  }

  .brand__mark {
    width: 1.9rem;
    height: 1.9rem;
  }

  .masthead__meta {
    gap: 0.75rem;
  }

  .signal {
    gap: 0;
  }

  .hero {
    min-height: calc(100svh - 9.75rem);
    padding: 3.6rem 0 3rem;
  }

  .eyebrow {
    margin-bottom: 1.1rem;
  }

  h1 {
    font-size: clamp(3.55rem, 17vw, 5.1rem);
    line-height: 0.84;
  }

  .statement {
    margin-top: 2.2rem;
    font-size: 1rem;
    line-height: 1.55;
  }

  .contact {
    padding-top: 1.1rem;
  }

  .footer {
    min-height: 4.5rem;
    gap: 1rem;
    font-size: 0.52rem;
  }

  .footer p:last-child {
    max-width: 12rem;
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .field__layer {
    opacity: 0;
    animation: none !important;
    filter: saturate(1.05) contrast(1.03);
  }

  .field__layer--1 {
    opacity: 1;
    transform: scale(1.04);
  }
}