:root {
  color-scheme: dark;
  --ink: #080914;
  --ink-soft: #101322;
  --paper: #f1eadb;
  --muted: #b9b5b2;
  --dim: #7c7b84;
  --gold: #d8af5b;
  --gold-bright: #f2dfad;
  --violet: #9180c8;
  --line: rgba(242, 223, 173, 0.2);
  --content: min(90rem, calc(100vw - 4rem));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  background: var(--ink);
}

body {
  margin: 0;
  min-width: 20rem;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--paper);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  transform: translateY(-160%);
  border: 1px solid var(--gold);
  background: var(--ink);
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 50%;
  display: flex;
  width: var(--content);
  height: 7.25rem;
  align-items: center;
  justify-content: space-between;
  transform: translateX(-50%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  transition: height 220ms ease, background-color 220ms ease, border-color 220ms ease, padding 220ms ease;
}

.site-header.is-scrolled {
  height: 4.75rem;
  padding: 0 1rem;
  border: 1px solid rgba(242, 223, 173, 0.14);
  border-top: 0;
  border-radius: 0 0 0.7rem 0.7rem;
  background: rgba(8, 9, 20, 0.84);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 2.5rem;
  height: 3.15rem;
  place-items: center;
  border: 1px solid rgba(242, 223, 173, 0.72);
  border-radius: 48% 48% 38% 38% / 34% 34% 62% 62%;
  background: linear-gradient(145deg, rgba(242, 223, 173, 0.14), rgba(8, 9, 20, 0.18));
  box-shadow: 0 0 2rem rgba(216, 175, 91, 0.18);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark i {
  position: absolute;
  content: "";
}

.brand-mark::before {
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--gold-bright);
  border-radius: 50%;
}

.brand-mark::after {
  top: 1.85rem;
  width: 1px;
  height: 0.75rem;
  background: var(--gold-bright);
}

.brand-mark i {
  bottom: -0.2rem;
  left: 50%;
  width: 0.35rem;
  height: 0.35rem;
  transform: translateX(-50%) rotate(45deg);
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}

.brand-copy {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.brand-copy strong {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.brand-copy small {
  color: var(--gold-bright);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.875rem;
}

.site-header nav a {
  color: rgba(255, 255, 255, 0.76);
  transition: color 180ms ease;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--gold-bright);
}

.development-tag {
  padding: 0.36rem 0.72rem;
  border: 1px solid rgba(216, 175, 91, 0.32);
  border-radius: 999px;
  color: var(--gold-bright);
  background: rgba(8, 9, 20, 0.44);
  letter-spacing: 0.14em;
}

.hero {
  position: relative;
  min-height: 58rem;
  height: max(48rem, 100svh);
  overflow: hidden;
  isolation: isolate;
}

.hero-media,
.hero-vignette {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 54% center;
  filter: saturate(0.8) contrast(1.07) brightness(0.82);
  transform: scale(1.01);
}

.hero-vignette {
  background:
    linear-gradient(90deg, rgba(5, 6, 14, 0.98) 0%, rgba(7, 8, 18, 0.84) 35%, rgba(8, 9, 20, 0.15) 68%, rgba(5, 6, 14, 0.64) 100%),
    linear-gradient(180deg, rgba(5, 6, 14, 0.56) 0%, transparent 22%, transparent 63%, var(--ink) 100%);
}

.hero-orbit {
  position: absolute;
  top: 18%;
  left: 43%;
  width: min(40vw, 37rem);
  aspect-ratio: 1;
  border: 1px solid rgba(242, 223, 173, 0.17);
  border-radius: 50%;
  box-shadow: 0 0 6rem rgba(216, 175, 91, 0.08) inset;
}

.hero-orbit::before,
.hero-orbit::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(145, 128, 200, 0.15);
  border-radius: 50%;
}

.hero-orbit::before {
  inset: 12%;
}

.hero-orbit::after {
  inset: 32%;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  width: var(--content);
  height: 100%;
  margin: 0 auto;
  padding: 10.75rem 0 7rem;
  grid-template-columns: minmax(0, 1.12fr) minmax(19rem, 0.55fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 9rem);
}

.hero-copy {
  max-width: 50rem;
}

.eyebrow {
  display: flex;
  margin: 0 0 1.6rem;
  align-items: center;
  gap: 1.25rem;
  color: var(--gold-bright);
  font-size: 0.8rem;
  letter-spacing: 0.24em;
}

.eyebrow span + span {
  position: relative;
}

.eyebrow span + span::before {
  position: absolute;
  top: 50%;
  left: -0.76rem;
  width: 0.2rem;
  height: 0.2rem;
  transform: translateY(-50%) rotate(45deg);
  background: var(--gold);
  content: "";
}

.hero h1 {
  margin: 0;
  font-family: inherit;
  font-size: clamp(3.15rem, 6vw, 6.6rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.06;
  text-wrap: balance;
}

.hero h1 em {
  color: var(--gold-bright);
  font-style: normal;
  text-shadow: 0 0 2.5rem rgba(216, 175, 91, 0.25);
}

.hero-intro {
  max-width: 42rem;
  margin: 2rem 0 0;
  color: rgba(241, 234, 219, 0.75);
  font-size: clamp(1rem, 1.25vw, 1.18rem);
  line-height: 1.95;
}

.hero-actions {
  display: flex;
  margin-top: 2.25rem;
  align-items: center;
  gap: 1.5rem;
}

.primary-link {
  display: inline-flex;
  min-height: 3.4rem;
  padding: 0 1.2rem 0 1.45rem;
  align-items: center;
  gap: 1.3rem;
  border: 1px solid rgba(242, 223, 173, 0.56);
  border-radius: 0.35rem;
  color: #17101a;
  background: linear-gradient(110deg, #e1bd73, #f1deb0 60%, #c79441);
  box-shadow: 0 0.8rem 2.2rem rgba(0, 0, 0, 0.26);
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-link:hover,
.primary-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 1rem 3rem rgba(216, 175, 91, 0.22);
}

.primary-link span {
  font-size: 1.2rem;
}

.hero-actions p {
  margin: 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.loop-card {
  position: relative;
  align-self: center;
  padding: 1.6rem 1.75rem 1.75rem;
  border: 1px solid rgba(242, 223, 173, 0.2);
  border-radius: 0.6rem;
  background:
    linear-gradient(145deg, rgba(21, 22, 39, 0.76), rgba(8, 9, 20, 0.84)),
    rgba(8, 9, 20, 0.72);
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
}

.loop-card::before {
  position: absolute;
  top: -1px;
  left: 1.75rem;
  width: 4.5rem;
  height: 1px;
  background: var(--gold-bright);
  box-shadow: 0 0 1rem var(--gold);
  content: "";
}

.loop-kicker {
  margin: 0 0 1.15rem;
  color: var(--gold-bright);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
}

.loop-card ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.loop-card li {
  display: grid;
  padding: 0.85rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  grid-template-columns: 2.65rem minmax(0, 1fr);
  column-gap: 0.65rem;
}

.loop-card li > span {
  grid-row: 1 / span 2;
  color: rgba(216, 175, 91, 0.58);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.loop-card strong {
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.3;
}

.loop-card small {
  margin-top: 0.16rem;
  color: rgba(255, 255, 255, 0.46);
  font-size: 0.76rem;
  line-height: 1.45;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  bottom: 2.2rem;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
}

.scroll-cue i {
  position: relative;
  width: 3.5rem;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
}

.scroll-cue i::after {
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: var(--gold-bright);
  animation: scan 2.4s ease-in-out infinite;
  content: "";
}

@keyframes scan {
  55%, 100% { transform: translateX(100%); }
}

.core-intro {
  position: relative;
  display: grid;
  width: var(--content);
  min-height: 57rem;
  margin: 0 auto;
  padding: 10rem 0 8rem;
  grid-template-columns: minmax(16rem, 0.72fr) minmax(18rem, 0.8fr) minmax(25rem, 1.35fr);
  align-items: start;
  gap: clamp(2rem, 4vw, 4.5rem);
}

.section-heading p {
  margin: 0 0 1.15rem;
  color: var(--gold-bright);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
}

.section-heading p span {
  margin-right: 0.7rem;
  color: var(--gold);
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2.3rem, 3.6vw, 4.4rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.16;
}

.core-copy {
  padding-top: 2.3rem;
  color: var(--muted);
}

.core-copy p {
  margin: 0 0 1.35rem;
}

.core-copy .lead {
  color: var(--paper);
  font-size: 1.12rem;
}

.world-frame {
  position: relative;
  z-index: 1;
  margin: 1.5rem 0 0;
  overflow: hidden;
  border: 1px solid rgba(242, 223, 173, 0.24);
  border-radius: 0.7rem;
  background: #121626;
  box-shadow: 0 2.5rem 7rem rgba(0, 0, 0, 0.32);
}

.world-frame::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(5, 6, 14, 0.92) 100%);
  content: "";
}

.world-frame img {
  width: 100%;
  aspect-ratio: 0.92;
  object-fit: cover;
  object-position: 66% center;
}

.world-frame figcaption {
  position: absolute;
  z-index: 1;
  right: 1.5rem;
  bottom: 1.3rem;
  left: 1.5rem;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.world-frame figcaption span {
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.world-frame figcaption small {
  color: rgba(255, 255, 255, 0.55);
}

.character-silhouette {
  position: absolute;
  z-index: 2;
  right: -4.5rem;
  bottom: 0;
  width: min(21vw, 21rem);
  pointer-events: none;
  filter: drop-shadow(-2rem 1rem 3rem rgba(0, 0, 0, 0.45));
}

.character-silhouette img {
  width: 100%;
  max-height: 42rem;
  object-fit: cover;
  object-position: top;
}

section {
  scroll-margin-top: 5.25rem;
}

button {
  color: inherit;
  font: inherit;
}

.section-index {
  margin: 0;
  color: var(--gold-bright);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section-index span {
  margin-right: 0.7rem;
  color: var(--gold);
}

.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.principles {
  display: grid;
  width: var(--content);
  margin: 0 auto;
  padding: 9rem 0 10rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  grid-template-columns: minmax(18rem, 0.8fr) minmax(31rem, 1.35fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.principles-heading {
  position: sticky;
  top: 7.5rem;
  align-self: start;
}

.principles-heading h2,
.showcase-heading h2,
.feature-depth-heading h2,
.systems-heading h2,
.world-story-copy h2,
.final-call h2 {
  margin: 1.2rem 0 0;
  font-size: clamp(2.5rem, 4.8vw, 5.1rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.12;
}

.principles-heading > p:last-child {
  max-width: 34rem;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.principle-list {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.principle {
  display: grid;
  padding: 2.15rem 0 2.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  grid-template-columns: 4.5rem minmax(0, 1fr);
  column-gap: 1.2rem;
}

.principle-number {
  grid-row: 1 / span 2;
  margin: 0.35rem 0 0;
  color: rgba(216, 175, 91, 0.58);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
}

.principle h3 {
  margin: 0;
  font-size: clamp(1.45rem, 2.1vw, 2rem);
  font-weight: 500;
}

.principle div p {
  margin: 0.75rem 0 0;
  color: var(--muted);
}

.principle > span {
  margin-top: 1.3rem;
  color: rgba(242, 223, 173, 0.63);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}

.showcase {
  position: relative;
  padding: 9rem 0 10rem;
  overflow: hidden;
  border-top: 1px solid rgba(242, 223, 173, 0.1);
  border-bottom: 1px solid rgba(242, 223, 173, 0.1);
  background:
    radial-gradient(circle at 82% 0%, rgba(83, 67, 132, 0.22), transparent 30rem),
    linear-gradient(180deg, #0d0f1d, #080914 82%);
}

.showcase::before {
  position: absolute;
  top: 3rem;
  right: -12rem;
  width: 36rem;
  height: 36rem;
  border: 1px solid rgba(145, 128, 200, 0.1);
  border-radius: 50%;
  content: "";
}

.showcase-heading {
  position: relative;
  z-index: 1;
  display: grid;
  width: var(--content);
  margin: 0 auto 4.5rem;
  grid-template-columns: minmax(11rem, 0.4fr) minmax(24rem, 1fr) minmax(17rem, 0.45fr);
  align-items: end;
  gap: 2rem;
}

.showcase-heading h2 {
  margin: 0;
}

.showcase-heading > p:last-child {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.showcase-viewer {
  position: relative;
  z-index: 1;
  width: min(var(--content), 80.25rem);
  margin: 0 auto;
}

.showcase-screen {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(242, 223, 173, 0.24);
  border-radius: 0.85rem;
  background: #080912;
  box-shadow: 0 3rem 8rem rgba(0, 0, 0, 0.42);
}

.showcase-screen::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: inherit;
  content: "";
}

.showcase-screen figure {
  position: relative;
  margin: 0;
}

.showcase-screen figure[hidden] {
  display: none;
}

.showcase-screen img {
  width: 100%;
  height: auto;
  aspect-ratio: 2568 / 1602;
  object-fit: contain;
  image-rendering: auto;
}

.showcase-screen figcaption {
  position: absolute;
  right: 0.8rem;
  bottom: 0.8rem;
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(242, 223, 173, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.65);
  background: rgba(8, 9, 20, 0.78);
  backdrop-filter: blur(12px);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}

.showcase-tabs {
  display: grid;
  margin-top: 1.25rem;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
}

.showcase-tabs button {
  display: flex;
  min-height: 10.5rem;
  padding: 1.3rem 1.35rem;
  align-items: flex-start;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.55rem;
  text-align: left;
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.showcase-tabs button:hover,
.showcase-tabs button:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(242, 223, 173, 0.4);
  outline: none;
}

.showcase-tabs button[aria-selected="true"] {
  border-color: rgba(216, 175, 91, 0.58);
  background: linear-gradient(145deg, rgba(216, 175, 91, 0.11), rgba(145, 128, 200, 0.06));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.05);
}

.showcase-tabs span {
  color: var(--gold-bright);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.showcase-tabs strong {
  margin-top: 0.7rem;
  font-size: 1.12rem;
  font-weight: 500;
}

.showcase-tabs small {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.65;
}

.feature-depth {
  position: relative;
  padding: 10rem 0 11rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 20%, rgba(145, 128, 200, 0.12), transparent 28rem),
    radial-gradient(circle at 92% 76%, rgba(216, 175, 91, 0.1), transparent 30rem),
    #080914;
}

.feature-depth::before {
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(242, 223, 173, 0.09) 12%, rgba(242, 223, 173, 0.04) 88%, transparent);
  content: "";
}

.feature-depth-heading {
  position: relative;
  display: grid;
  width: var(--content);
  margin: 0 auto;
  grid-template-columns: minmax(11rem, 0.4fr) minmax(25rem, 1fr) minmax(18rem, 0.48fr);
  align-items: end;
  gap: 2rem;
}

.feature-depth-heading h2 {
  margin: 0;
}

.feature-depth-heading > p:last-child {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.feature-stories {
  position: relative;
  width: var(--content);
  margin: 7rem auto 0;
}

.feature-story {
  display: grid;
  padding: 0 0 7rem;
  margin: 0 0 7rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  grid-template-columns: minmax(0, 1.35fr) minmax(20rem, 0.82fr);
  align-items: center;
  gap: clamp(2.75rem, 5.5vw, 6rem);
}

.feature-story:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.feature-story--reverse {
  grid-template-columns: minmax(20rem, 0.82fr) minmax(0, 1.35fr);
}

.feature-story--reverse .feature-visual {
  grid-column: 2;
  grid-row: 1;
}

.feature-story--reverse .feature-copy {
  grid-column: 1;
  grid-row: 1;
}

.feature-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(242, 223, 173, 0.22);
  border-radius: 0.78rem;
  background: #080912;
  box-shadow: 0 2.5rem 7rem rgba(0, 0, 0, 0.36);
}

.feature-visual::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.035);
  border-radius: inherit;
  box-shadow: inset 0 -5rem 7rem rgba(4, 5, 12, 0.14);
  content: "";
}

.feature-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 2568 / 1602;
  object-fit: contain;
  image-rendering: auto;
}

.feature-visual figcaption {
  position: absolute;
  z-index: 1;
  right: 0.8rem;
  bottom: 0.8rem;
  display: flex;
  padding: 0.38rem 0.72rem;
  align-items: center;
  gap: 0.55rem;
  border: 1px solid rgba(242, 223, 173, 0.18);
  border-radius: 999px;
  background: rgba(8, 9, 20, 0.78);
  backdrop-filter: blur(12px);
  font-size: 0.7rem;
}

.feature-visual figcaption span {
  color: var(--gold-bright);
}

.feature-visual figcaption small {
  color: rgba(255, 255, 255, 0.6);
  font-size: inherit;
}

.feature-copy {
  position: relative;
}

.feature-no {
  margin: 0 0 1.1rem;
  color: var(--gold-bright);
  font-size: 0.73rem;
  letter-spacing: 0.17em;
}

.feature-copy h3 {
  margin: 0;
  font-size: clamp(2.25rem, 3.2vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.13;
}

.feature-copy > p:not(.feature-no, .feature-note) {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.feature-facts {
  display: grid;
  margin: 1.8rem 0 0;
  padding: 1.1rem 0;
  border-top: 1px solid rgba(242, 223, 173, 0.14);
  border-bottom: 1px solid rgba(242, 223, 173, 0.14);
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
}

.feature-facts li {
  min-width: 0;
  padding: 0 0.85rem;
}

.feature-facts li:first-child {
  padding-left: 0;
}

.feature-facts li + li {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-facts strong,
.feature-facts span {
  display: block;
}

.feature-facts strong {
  color: var(--gold-bright);
  font-size: 1.15rem;
  font-weight: 500;
}

.feature-facts span {
  margin-top: 0.25rem;
  color: rgba(241, 234, 219, 0.56);
  font-size: 0.72rem;
  line-height: 1.55;
}

.feature-note {
  margin: 1.15rem 0 0;
  padding-left: 1rem;
  border-left: 1px solid rgba(216, 175, 91, 0.52);
  color: rgba(242, 223, 173, 0.68);
  font-size: 0.78rem;
  line-height: 1.7;
}

.systems {
  width: var(--content);
  margin: 0 auto;
  padding: 10rem 0;
}

.systems-heading {
  display: grid;
  margin-bottom: 4.5rem;
  grid-template-columns: 1fr 2fr;
  align-items: end;
  gap: 2rem;
}

.systems-heading h2 {
  margin: 0;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(18rem, auto);
  gap: 1rem;
}

.system-card {
  position: relative;
  display: flex;
  padding: 1.6rem;
  overflow: hidden;
  align-items: flex-start;
  flex-direction: column;
  justify-content: flex-end;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 0.65rem;
  background:
    linear-gradient(155deg, rgba(32, 34, 57, 0.74), rgba(10, 11, 23, 0.94));
  transition: border-color 200ms ease, transform 200ms ease;
}

.system-card:hover {
  transform: translateY(-3px);
  border-color: rgba(242, 223, 173, 0.28);
}

.system-card::before {
  position: absolute;
  top: -1.6rem;
  right: 1rem;
  color: rgba(242, 223, 173, 0.035);
  font-size: 9rem;
  font-weight: 700;
  line-height: 1;
  content: attr(data-mark);
}

.system-card > p {
  position: absolute;
  top: 1.35rem;
  left: 1.6rem;
  margin: 0;
  color: rgba(216, 175, 91, 0.62);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.system-card h3 {
  position: relative;
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2.05rem);
  font-weight: 500;
}

.system-card span {
  position: relative;
  max-width: 31rem;
  margin-top: 0.85rem;
  color: var(--muted);
}

.system-card--large {
  grid-column: span 2;
  background:
    radial-gradient(circle at 78% 34%, rgba(145, 128, 200, 0.25), transparent 17rem),
    linear-gradient(145deg, rgba(25, 27, 47, 0.92), rgba(10, 11, 23, 0.95));
}

.system-card--accent {
  border-color: rgba(216, 175, 91, 0.25);
  background:
    linear-gradient(145deg, rgba(216, 175, 91, 0.13), rgba(21, 18, 28, 0.96));
}

.world-story {
  position: relative;
  display: grid;
  min-height: 48rem;
  overflow: hidden;
  place-items: center;
  isolation: isolate;
}

.world-story-media,
.world-story-shade {
  position: absolute;
  inset: 0;
}

.world-story-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.66) contrast(1.08) brightness(0.72);
  transform: scale(1.03);
}

.world-story-shade {
  background:
    linear-gradient(90deg, rgba(5, 6, 14, 0.97) 0%, rgba(5, 6, 14, 0.82) 40%, rgba(5, 6, 14, 0.34) 72%, rgba(5, 6, 14, 0.58) 100%),
    linear-gradient(180deg, var(--ink) 0%, transparent 18%, transparent 78%, var(--ink) 100%);
}

.world-story-copy {
  position: relative;
  z-index: 1;
  width: var(--content);
}

.world-story-copy h2 {
  max-width: 54rem;
}

.world-story-copy > p:not(.section-index) {
  max-width: 43rem;
  margin: 2rem 0 0;
  color: rgba(241, 234, 219, 0.76);
  font-size: 1.08rem;
}

.world-story-copy blockquote {
  max-width: 43rem;
  margin: 2.1rem 0 0;
  padding: 1rem 0 1rem 1.5rem;
  border-left: 1px solid var(--gold);
  color: var(--gold-bright);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  letter-spacing: 0.05em;
}

.final-call {
  display: flex;
  width: var(--content);
  min-height: 42rem;
  margin: 0 auto;
  padding: 9rem 0 8rem;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.final-call h2 {
  margin-top: 1.4rem;
  font-size: clamp(3rem, 6vw, 6.2rem);
}

.final-meta {
  display: flex;
  margin-top: 2.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.final-meta span {
  padding: 0.45rem 0.85rem;
  border: 1px solid rgba(242, 223, 173, 0.18);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
}

.back-top {
  display: inline-flex;
  margin-top: 3.25rem;
  padding-bottom: 0.35rem;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid rgba(242, 223, 173, 0.38);
  color: var(--gold-bright);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

footer {
  display: flex;
  width: var(--content);
  margin: 0 auto;
  padding: 2.25rem 0 2.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.75rem;
}

footer p {
  margin: 0;
}

footer p:first-child {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
}

footer strong {
  color: rgba(241, 234, 219, 0.82);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
}

footer span {
  letter-spacing: 0.12em;
}

@media (max-width: 68rem) {
  :root { --content: min(100% - 2.5rem, 62rem); }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.48fr);
    gap: 2rem;
  }

  .hero h1 { font-size: clamp(3.15rem, 7vw, 5.3rem); }

  .core-intro {
    grid-template-columns: 0.8fr 1fr;
  }

  .world-frame {
    grid-column: 1 / -1;
    margin-top: 0;
  }

  .world-frame img {
    aspect-ratio: 16 / 7;
  }

  .character-silhouette { display: none; }

  .principles {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .principles-heading {
    position: static;
  }

  .principles-heading > p:last-child {
    max-width: 45rem;
  }

  .showcase-heading {
    grid-template-columns: 0.65fr 1.35fr;
  }

  .showcase-heading > p:last-child {
    grid-column: 2;
  }

  .showcase-tabs button {
    min-height: 12rem;
  }

  .feature-depth-heading {
    grid-template-columns: 0.65fr 1.35fr;
  }

  .feature-depth-heading > p:last-child {
    grid-column: 2;
  }

  .feature-stories {
    margin-top: 5rem;
  }

  .feature-story,
  .feature-story--reverse {
    padding-bottom: 5rem;
    margin-bottom: 5rem;
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }

  .feature-story--reverse .feature-visual,
  .feature-story--reverse .feature-copy {
    grid-column: 1;
    grid-row: auto;
  }

  .feature-copy {
    max-width: 47rem;
  }

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

  .system-card--large {
    grid-column: span 2;
  }
}

@media (max-width: 48rem) {
  :root { --content: calc(100% - 2rem); }

  .site-header {
    height: 5.5rem;
  }

  .site-header.is-scrolled {
    height: 4.5rem;
    padding: 0 0.7rem;
  }

  .brand-copy small,
  .site-header nav a {
    display: none;
  }

  .brand-copy strong { font-size: 1.2rem; }

  .development-tag {
    font-size: 0.72rem;
  }

  .hero {
    height: auto;
    min-height: 62rem;
  }

  .hero-media img {
    object-position: 63% center;
  }

  .hero-vignette {
    background:
      linear-gradient(180deg, rgba(5, 6, 14, 0.35) 0%, rgba(7, 8, 18, 0.62) 30%, rgba(5, 6, 14, 0.98) 76%, var(--ink) 100%),
      linear-gradient(90deg, rgba(5, 6, 14, 0.82), transparent 80%);
  }

  .hero-orbit {
    top: 18%;
    left: 26%;
    width: 75vw;
  }

  .hero-layout {
    display: block;
    padding: 9rem 0 6rem;
  }

  .hero-copy {
    padding-top: 19rem;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 12vw, 4.3rem);
    line-height: 1.08;
  }

  .hero-intro {
    margin-top: 1.5rem;
    line-height: 1.8;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.85rem;
  }

  .loop-card {
    margin-top: 2.5rem;
  }

  .scroll-cue { display: none; }

  .core-intro {
    display: block;
    min-height: 0;
    padding: 7rem 0 5rem;
  }

  .core-copy {
    padding-top: 1.6rem;
  }

  .world-frame {
    margin-top: 2.25rem;
  }

  .world-frame img {
    aspect-ratio: 4 / 5;
    object-position: 64% center;
  }

  .world-frame figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.1rem;
  }

  .principles {
    padding: 7rem 0;
    grid-template-columns: 1fr;
    gap: 2.6rem;
  }

  .principle {
    grid-template-columns: 3.3rem minmax(0, 1fr);
  }

  .showcase {
    padding: 7rem 0;
  }

  .showcase-heading {
    display: block;
    margin-bottom: 2.5rem;
  }

  .showcase-heading h2 {
    margin-top: 1.1rem;
  }

  .showcase-heading > p:last-child {
    margin-top: 1.4rem;
  }

  .showcase-screen {
    margin-right: -1rem;
    margin-left: -1rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .showcase-screen img {
    aspect-ratio: 2568 / 1602;
    object-position: center;
  }

  .showcase-tabs {
    display: flex;
    margin-top: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .showcase-tabs::-webkit-scrollbar {
    display: none;
  }

  .showcase-tabs button {
    min-width: min(82vw, 20rem);
    min-height: 11rem;
    scroll-snap-align: start;
  }

  .feature-depth {
    padding: 7rem 0;
  }

  .feature-depth-heading {
    display: block;
  }

  .feature-depth-heading h2 {
    margin-top: 1.1rem;
  }

  .feature-depth-heading > p:last-child {
    margin-top: 1.4rem;
  }

  .feature-stories {
    margin-top: 3.5rem;
  }

  .feature-story,
  .feature-story--reverse {
    padding-bottom: 4rem;
    margin-bottom: 4rem;
    gap: 1.8rem;
  }

  .feature-visual {
    margin-right: -1rem;
    margin-left: -1rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .feature-visual figcaption {
    right: 0.55rem;
    bottom: 0.55rem;
  }

  .feature-copy h3 {
    font-size: clamp(2.2rem, 10vw, 3.4rem);
  }

  .feature-facts {
    padding: 0;
    grid-template-columns: 1fr;
  }

  .feature-facts li,
  .feature-facts li:first-child {
    padding: 0.8rem 0;
  }

  .feature-facts li + li {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 0;
  }

  .systems {
    padding: 7rem 0;
  }

  .systems-heading {
    display: block;
    margin-bottom: 2.5rem;
  }

  .systems-heading h2 {
    margin-top: 1.1rem;
  }

  .system-grid {
    display: block;
  }

  .system-card {
    min-height: 15rem;
    margin-top: 0.8rem;
  }

  .world-story {
    min-height: 43rem;
    place-items: end center;
  }

  .world-story-media img {
    object-position: 58% center;
  }

  .world-story-shade {
    background:
      linear-gradient(180deg, rgba(5, 6, 14, 0.34) 0%, rgba(5, 6, 14, 0.72) 46%, var(--ink) 100%);
  }

  .world-story-copy {
    padding-bottom: 5.5rem;
  }

  .world-story-copy h2 {
    font-size: clamp(2.5rem, 11vw, 4rem);
  }

  .world-story-copy blockquote {
    font-size: 1.1rem;
  }

  .final-call {
    min-height: 38rem;
    padding: 7rem 0 6rem;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  footer p:first-child {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}