:root {
  --obsidian: #0d0d0d;
  --charcoal: #111111;
  --surface: #181818;
  --surface-elevated: #202020;
  --ivory: #f5f5f0;
  --soft-gray: #b3b3b3;
  --muted-gray: #777777;
  --champagne: #c5a059;
  --line: rgba(245, 245, 240, 0.15);
  --display: "Iowan Old Style", "Bodoni 72", Didot, Georgia, serif;
  --sans: "Pretendard Variable", Pretendard, SUIT, -apple-system, BlinkMacSystemFont, "Noto Sans KR", "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --page-pad: clamp(1.25rem, 4vw, 4rem);
  --section-gap: clamp(6rem, 12vw, 11rem);
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  background: var(--obsidian);
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--ivory);
  background:
    radial-gradient(circle at 85% 8%, rgba(197, 160, 89, 0.05), transparent 28rem),
    var(--obsidian);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 4px;
}

::selection {
  color: var(--obsidian);
  background: var(--champagne);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--obsidian);
  background: var(--ivory);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 4.75rem;
  min-height: calc(4.75rem + env(safe-area-inset-top));
  padding: 0 var(--page-pad);
  padding-top: env(safe-area-inset-top);
  padding-right: max(var(--page-pad), env(safe-area-inset-right));
  padding-left: max(var(--page-pad), env(safe-area-inset-left));
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  min-height: 48px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand__word {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__ko {
  color: var(--muted-gray);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.site-header__label {
  margin: 0;
  color: var(--soft-gray);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-header__label span {
  color: var(--champagne);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  padding: 6.25rem var(--page-pad) 2rem;
  padding-top: calc(6.25rem + env(safe-area-inset-top));
  padding-right: max(var(--page-pad), env(safe-area-inset-right));
  padding-left: max(var(--page-pad), env(safe-area-inset-left));
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 49.85%, rgba(197, 160, 89, 0.16) 50%, transparent 50.15%),
    linear-gradient(rgba(245, 245, 240, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 245, 240, 0.025) 1px, transparent 1px);
  background-size: 100% 100%, 4rem 4rem, 4rem 4rem;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 85%);
  mask-image: linear-gradient(to bottom, #000, transparent 85%);
}

.hero__texture {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0.28;
  background: radial-gradient(circle at 68% 40%, rgba(197, 160, 89, 0.12), transparent 32%);
}

.hero__identity {
  align-self: end;
  padding-bottom: clamp(1.5rem, 5vh, 4rem);
}

.eyebrow,
.access-panel__kicker {
  margin: 0 0 1rem;
  color: var(--champagne);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow span,
.access-panel__kicker span {
  margin-left: 0.55rem;
  color: var(--soft-gray);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.hero__title {
  margin: 0;
  line-height: 0.86;
}

.hero__title-main {
  display: block;
  font-family: var(--display);
  font-size: clamp(5rem, 24vw, 8rem);
  font-weight: 400;
  letter-spacing: -0.09em;
}

.hero__title-sub {
  display: block;
  margin-top: 1.2rem;
  font-family: var(--sans);
  font-size: clamp(1.45rem, 6.4vw, 2.35rem);
  font-style: normal;
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.06em;
  word-break: keep-all;
}

.hero__statement {
  margin: 1.5rem 0 0;
  color: var(--soft-gray);
  font-size: 0.92rem;
  font-weight: 450;
  letter-spacing: -0.02em;
}

.access-panel {
  align-self: end;
  background: rgba(13, 13, 13, 0.84);
}

.access-panel__heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--ivory);
}

.access-panel__heading h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.access-panel__kicker {
  margin-bottom: 0.2rem;
  font-size: 0.7rem;
}

.access-panel__edition {
  margin: 0;
  color: var(--muted-gray);
  font-size: 0.6rem;
  line-height: 1.35;
  text-align: right;
  text-transform: uppercase;
}

.gateway-list {
  border-bottom: 1px solid var(--line);
}

.gateway {
  position: relative;
  display: grid;
  grid-template-columns: 2.3rem 1fr auto;
  align-items: center;
  min-height: 62px;
  border-top: 1px solid var(--line);
  transition: color 180ms ease, background-color 180ms ease, padding 180ms ease;
}

.gateway::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 1px;
  background: var(--champagne);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 180ms ease;
}

.gateway:hover,
.gateway:focus-visible {
  padding-inline: 0.75rem;
  background: rgba(245, 245, 240, 0.045);
}

.gateway:hover::before,
.gateway:focus-visible::before {
  transform: scaleY(1);
}

.gateway__index {
  color: var(--champagne);
  font-family: var(--display);
  font-size: 0.82rem;
}

.gateway__domain {
  font-size: clamp(1rem, 4.6vw, 1.2rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}

.gateway__action {
  color: var(--soft-gray);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.access-panel__note {
  max-width: 26rem;
  margin: 0;
  padding: 0.85rem 0 0;
  color: var(--muted-gray);
  font-size: 0.72rem;
  line-height: 1.5;
}

.hero__folio {
  display: none;
}

.section-shell {
  position: relative;
  display: grid;
  gap: 2.5rem;
  padding: var(--section-gap) var(--page-pad);
  padding-right: max(var(--page-pad), env(safe-area-inset-right));
  padding-left: max(var(--page-pad), env(safe-area-inset-left));
  border-top: 1px solid var(--line);
}

.section-index {
  color: var(--muted-gray);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.manifesto__lead {
  margin: 0 0 4rem;
  color: var(--soft-gray);
  font-family: var(--sans);
  font-size: clamp(1.25rem, 5vw, 2.1rem);
  font-weight: 450;
  line-height: 1.35;
  letter-spacing: -0.045em;
}

.manifesto__lead em,
.benefits h2 em,
.closing h2 em {
  color: var(--ivory);
  font-style: normal;
  font-weight: inherit;
}

.manifesto h2,
.standards h2,
.benefits h2,
.closing h2 {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(2.5rem, 9vw, 6.5rem);
  font-weight: 540;
  line-height: 1;
  letter-spacing: -0.075em;
  word-break: keep-all;
}

.manifesto__columns {
  display: grid;
  gap: 2.5rem;
  margin-top: 4rem;
}

.manifesto__columns > p,
.benefits__intro > p:last-child,
.closing__copy {
  max-width: 31rem;
  margin: 0;
  color: var(--soft-gray);
  font-size: 1rem;
  line-height: 1.85;
  word-break: keep-all;
}

.remove-remain {
  margin: 0;
}

.remove-remain div {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.remove-remain dt {
  color: var(--muted-gray);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.remove-remain dd {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(1.2rem, 3.5vw, 2rem);
  font-weight: 620;
  letter-spacing: -0.045em;
  line-height: 1.25;
  word-break: keep-all;
}

.remove-remain__removed dd {
  color: rgba(245, 245, 240, 0.42);
  text-decoration: line-through;
  text-decoration-color: rgba(197, 160, 89, 0.65);
  text-decoration-thickness: 1px;
}

.remove-remain__kept {
  border-bottom: 1px solid var(--line);
}

.remove-remain__kept dt,
.remove-remain__kept dd {
  color: var(--champagne);
}

.standards {
  background: var(--ivory);
  color: var(--obsidian);
}

.standards .section-index,
.standards .eyebrow {
  color: #6b5a37;
}

.standards h2 span {
  font-style: normal;
}

.standard-list {
  display: grid;
  margin: clamp(3rem, 8vw, 7rem) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(13, 13, 13, 0.25);
}

.standard-list li {
  position: relative;
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  gap: 0 0.75rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(13, 13, 13, 0.25);
}

.standard-list__number {
  grid-row: 1 / span 2;
  color: #6b5a37;
  font-size: 0.68rem;
}

.standard-list h3,
.standard-list p {
  margin: 0;
}

.standard-list h3 {
  font-family: var(--sans);
  font-size: 1.6rem;
  font-weight: 650;
  letter-spacing: -0.045em;
  word-break: keep-all;
}

.standard-list p {
  color: #4f4f4b;
  font-size: 0.82rem;
}

.benefits__intro .eyebrow {
  margin-bottom: 1.5rem;
}

.benefits__intro > p:last-child {
  margin-top: 2rem;
}

.benefit-track {
  display: grid;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.benefit-track li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  align-items: baseline;
  gap: 0 0.75rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.benefit-track li > span {
  grid-row: 1 / span 2;
  color: var(--champagne);
  font-family: var(--display);
  font-size: 0.75rem;
}

.benefit-track strong {
  font-family: var(--sans);
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.benefit-track small {
  color: var(--muted-gray);
  font-size: 0.82rem;
  line-height: 1.55;
}

.closing {
  position: relative;
  min-height: 80vh;
  min-height: 80svh;
  padding: var(--section-gap) var(--page-pad) 5rem;
  padding-right: max(var(--page-pad), env(safe-area-inset-right));
  padding-left: max(var(--page-pad), env(safe-area-inset-left));
  overflow: hidden;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(197, 160, 89, 0.09), transparent 35%),
    var(--charcoal);
}

.closing__inner {
  position: relative;
  z-index: 1;
}

.closing h2 em {
  color: var(--champagne);
  font-style: normal;
}

.closing__copy {
  margin-top: 2rem;
}

.closing__assurance {
  max-width: 44rem;
  margin: 2.5rem 0 0;
  color: var(--champagne);
  font-family: var(--sans);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.5;
  word-break: keep-all;
}

.closing-links {
  max-width: 44rem;
  margin-top: 1.5rem;
  border-top: 1px solid var(--ivory);
}

.closing-links a {
  display: grid;
  grid-template-columns: 2.25rem 1fr auto;
  align-items: center;
  min-height: 64px;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
  transition: color 180ms ease, padding 180ms ease;
}

.closing-links a:hover,
.closing-links a:focus-visible {
  padding-inline: 0.75rem;
  color: var(--champagne);
}

.closing-links a span:first-child {
  color: var(--muted-gray);
  font-family: var(--display);
  font-size: 0.75rem;
}

.closing__mark {
  position: absolute;
  right: -0.05em;
  bottom: -0.35em;
  margin: 0;
  color: rgba(245, 245, 240, 0.025);
  font-family: var(--display);
  font-size: 70vw;
  line-height: 1;
  pointer-events: none;
}

.sticky-access {
  position: fixed;
  z-index: 20;
  right: 1rem;
  bottom: 1rem;
  bottom: max(1rem, env(safe-area-inset-bottom));
  left: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 0 1rem;
  color: var(--obsidian);
  background: var(--ivory);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(calc(100% + 2rem));
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.sticky-access[hidden] {
  display: none;
}

.sticky-access.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.site-footer {
  display: grid;
  gap: 2rem;
  padding: 3rem var(--page-pad) 6rem;
  padding-right: max(var(--page-pad), env(safe-area-inset-right));
  padding-left: max(var(--page-pad), env(safe-area-inset-left));
  color: var(--muted-gray);
  border-top: 1px solid var(--line);
  background: var(--obsidian);
  font-size: 0.72rem;
}

.site-footer p {
  margin: 0;
}

.site-footer__brand {
  margin-bottom: 0.35rem !important;
  color: var(--ivory);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-footer__brand span {
  margin-left: 0.35rem;
  color: var(--muted-gray);
  font-size: 0.6rem;
  font-weight: 500;
}

.site-footer__notice {
  max-width: 28rem;
  line-height: 1.7;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1), transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-height: 44rem) and (max-width: 63.99rem) {
  .hero {
    min-height: auto;
  }
}

@media (max-width: 30rem) and (max-height: 44rem) {
  .site-header {
    min-height: 4rem;
    min-height: calc(4rem + env(safe-area-inset-top));
  }

  .hero {
    min-height: 100vh;
    min-height: 100svh;
    padding-top: 4.65rem;
    padding-top: calc(4.65rem + env(safe-area-inset-top));
    padding-bottom: 0.75rem;
    row-gap: 0;
  }

  .hero__identity {
    padding-bottom: 0.85rem;
  }

  .eyebrow {
    margin-bottom: 0.5rem;
    line-height: 1.45;
  }

  .eyebrow span {
    display: block;
    margin: 0.1rem 0 0;
  }

  .hero__title-main {
    font-size: clamp(4rem, 21vw, 5rem);
  }

  .hero__title-sub {
    margin-top: 0.6rem;
    font-size: 1.25rem;
  }

  .hero__statement {
    margin-top: 0.65rem;
    font-size: 0.78rem;
  }

  .access-panel__heading {
    padding: 0.65rem 0;
  }

  .gateway {
    min-height: 52px;
  }

  .gateway__domain {
    font-size: 0.94rem;
  }

  .access-panel__note {
    display: none;
  }
}

@media (min-width: 48rem) {
  .section-shell {
    grid-template-columns: minmax(7rem, 0.25fr) minmax(0, 1fr);
  }

  .manifesto__columns {
    grid-template-columns: minmax(0, 0.85fr) minmax(20rem, 1fr);
  }

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

  .standards > .standard-list {
    grid-column: 2;
  }

  .standard-list li:nth-child(odd) {
    padding-right: 2rem;
    border-right: 1px solid rgba(13, 13, 13, 0.25);
  }

  .standard-list li:nth-child(even) {
    padding-left: 2rem;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr auto;
    align-items: end;
    padding-bottom: 3rem;
  }
}

@media (min-width: 64rem) {
  .hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(24rem, 0.85fr);
    grid-template-rows: 1fr auto;
    gap: 0 clamp(3rem, 7vw, 8rem);
    padding-top: 8rem;
    padding-top: calc(8rem + env(safe-area-inset-top));
    background:
      linear-gradient(90deg, rgba(13, 13, 13, 0.97) 0%, rgba(13, 13, 13, 0.86) 38%, rgba(13, 13, 13, 0.38) 72%, rgba(13, 13, 13, 0.22) 100%),
      url("./zium-hero-obsidian.jpg") center right / cover no-repeat;
  }

  .hero::before,
  .hero__texture {
    display: none;
  }

  .hero__identity,
  .access-panel {
    align-self: center;
  }

  .hero__title-main {
    font-size: clamp(8rem, 15vw, 14rem);
  }

  .hero__title-sub {
    font-size: clamp(2rem, 3.2vw, 3.5rem);
  }

  .access-panel {
    padding: 1.75rem;
    border: 1px solid rgba(245, 245, 240, 0.2);
  }

  .gateway {
    min-height: 76px;
  }

  .hero__folio {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    color: var(--muted-gray);
    border-top: 1px solid var(--line);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .manifesto h2,
  .standards h2,
  .benefits h2,
  .closing h2 {
    max-width: 75rem;
  }

  .standard-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .standard-list li,
  .standard-list li:nth-child(even),
  .standard-list li:nth-child(odd) {
    display: block;
    min-height: 15rem;
    padding: 2rem;
    border-right: 1px solid rgba(13, 13, 13, 0.25);
  }

  .standard-list li:first-child {
    padding-left: 0;
  }

  .standard-list li:last-child {
    border-right: 0;
  }

  .standard-list h3 {
    margin-top: 4.5rem;
    font-size: 1.75rem;
  }

  .benefits {
    grid-template-columns: minmax(7rem, 0.2fr) minmax(0, 0.8fr) minmax(22rem, 0.55fr);
  }

  .benefit-track {
    margin-top: 0;
  }

  .sticky-access {
    right: 2rem;
    bottom: 2rem;
    left: auto;
    width: 14rem;
  }

  .closing__mark {
    font-size: 45vw;
  }
}

@media (min-width: 64rem) {
  @supports (background-image: image-set(url("./zium-hero-obsidian.webp") type("image/webp") 1x)) {
    .hero {
      background-image:
        linear-gradient(90deg, rgba(13, 13, 13, 0.97) 0%, rgba(13, 13, 13, 0.86) 38%, rgba(13, 13, 13, 0.38) 72%, rgba(13, 13, 13, 0.22) 100%),
        image-set(
          url("./zium-hero-obsidian.webp") type("image/webp") 1x,
          url("./zium-hero-obsidian.jpg") type("image/jpeg") 1x
        );
      background-position: center, center right;
      background-size: auto, cover;
      background-repeat: no-repeat;
    }
  }
}

@supports (content-visibility: auto) {
  .manifesto,
  .standards,
  .benefits,
  .closing,
  .site-footer {
    content-visibility: auto;
    contain-intrinsic-size: 1px 900px;
  }
}

@media (prefers-reduced-data: reduce) {
  .hero {
    background-image: none;
  }

  .js [data-reveal] {
    transition: none;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}