:root {
  color-scheme: dark;
  --background: #080e12;
  --surface: #101b21;
  --accent: #57d6cf;
  --text: #e5eff2;
  --muted: #a4b8bf;
  --line: #273940;
  --header-height: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 24px); }
body { margin: 0; background: var(--background); color: var(--text); font-family: "Malgun Gothic", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
video:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent); color: var(--background); }
h1, h2, h3, p { margin: 0; }
h1, h2, h3, p { word-break: keep-all; overflow-wrap: anywhere; }
.container { width: min(1200px, calc(100% - 112px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 10; top: 12px; left: 16px; padding: 14px 20px; color: var(--background); background: var(--accent); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 5; border-bottom: 1px solid var(--line); background: rgba(8, 14, 18, .97); }
.header-inner { width: min(1440px, calc(100% - 112px)); min-height: var(--header-height); margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { font-family: Arial, sans-serif; font-weight: 800; font-size: 19px; letter-spacing: .09em; line-height: 1.1; }
.wordmark span { display: block; font-size: 9px; font-weight: 400; letter-spacing: .54em; margin-top: 6px; }
.main-nav { display: flex; gap: 36px; align-items: center; font-size: 13px; }
.main-nav a { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; color: var(--muted); transition: color .18s; }
.main-nav a:hover, .site-footer a:hover { color: var(--accent); }
.main-nav a:last-child { color: var(--text); }
.main-nav a:last-child span { color: var(--accent); }
.hero { position: relative; border-bottom: 1px solid var(--line); background: radial-gradient(ellipse at 12% 38%, rgba(35, 101, 102, .16), transparent 62%); }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(87, 214, 207, .025) 1px, transparent 1px), linear-gradient(90deg, rgba(87, 214, 207, .025) 1px, transparent 1px); background-size: 80px 80px; }
.hero-inner { position: relative; padding-top: 38px; }
.hero-meta { display: flex; justify-content: space-between; align-items: center; font: 10px/1.6 Arial, sans-serif; color: var(--muted); letter-spacing: .17em; }
.development { display: inline-flex; align-items: center; gap: 8px; font-family: inherit; letter-spacing: .04em; }
.development::before { content: ""; height: 5px; width: 5px; background: var(--accent); }
.hero-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: end; padding: 68px 0 60px; }
.eyebrow { color: var(--accent); font: 10px/1.8 Arial, sans-serif; letter-spacing: .17em; }
h1 { margin: 25px 0 30px; font-size: clamp(66px, 7.2vw, 108px); line-height: 1.06; letter-spacing: -.075em; font-weight: 800; }
h1 > span:not(.title-period) { color: var(--accent); }
.title-period { color: var(--accent); padding-left: .03em; }
.hero-tagline { font-size: 16px; line-height: 1.95; color: var(--text); letter-spacing: -.04em; }
.hero-description { border-top: 1px solid var(--accent); padding-top: 24px; padding-bottom: 6px; }
.section-label { font-size: 12px; color: var(--text); }
.section-label span { font: 9px Arial, sans-serif; color: var(--muted); margin-left: 12px; letter-spacing: .08em; }
.hero-description > p { margin-top: 25px; color: var(--muted); font-size: 16px; line-height: 2; letter-spacing: -.025em; }
.primary-link { margin-top: 30px; padding: 17px 22px; min-height: 54px; width: 206px; max-width: 100%; display: flex; justify-content: space-between; align-items: center; background: var(--accent); color: var(--background); font-size: 13px; font-weight: 700; transition: background .18s; }
.primary-link:hover { background: #88e6e0; }
.primary-link span { font-size: 20px; }
.genre-list { list-style: none; display: flex; gap: 34px; border-top: 1px solid var(--line); margin: 0; padding: 26px 0; font-size: 12px; color: var(--muted); }
.genre-list li { display: flex; align-items: center; gap: 10px; }
.genre-marker { width: 5px; height: 5px; border: 1px solid var(--accent); }
.gameplay { padding-block: 85px 90px; }
.gameplay-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding-bottom: 42px; border-bottom: 1px solid var(--line); }
.gameplay-heading h2 { margin-top: 15px; font-size: clamp(23px, 2.5vw, 32px); line-height: 1.5; letter-spacing: -.05em; font-weight: 600; }
.section-count { color: var(--muted); font: 11px/2 Consolas, monospace; letter-spacing: .15em; flex-shrink: 0; }
.gameplay-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 70px; }
.media-guide { margin-top: 18px; color: var(--muted); font-size: 12px; line-height: 1.9; }
.feature-media { margin-top: 28px; }
.feature-media video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #030608; border: 1px solid var(--line); }
.media-error { color: var(--muted); font-size: 12px; line-height: 1.8; margin-top: 12px; }
.section-index { border-right: 1px solid var(--line); }
.section-index nav { position: sticky; top: calc(var(--header-height) + 40px); padding: 42px 18px 30px 0; }
.index-label { font-size: 11px; letter-spacing: .12em; margin-bottom: 22px; color: var(--muted); }
.section-index a { display: flex; align-items: center; gap: 20px; min-height: 45px; font-size: 12px; color: var(--muted); transition: color .18s; }
.section-index a span { font: 10px Consolas, monospace; color: var(--accent); }
.section-index a:hover { color: var(--text); }
.feature { padding-block: 46px 50px; border-bottom: 1px solid var(--line); }
.feature:last-child { border-bottom: 0; padding-bottom: 0; }
.feature-meta { display: flex; align-items: center; gap: 18px; font: 9px/1.8 Arial, sans-serif; letter-spacing: .14em; color: var(--muted); }
.feature-number { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 30px; border: 1px solid #356461; font: 11px Consolas, monospace; color: var(--accent); letter-spacing: .04em; }
.feature h3 { font-size: clamp(23px, 2.3vw, 31px); font-weight: 600; line-height: 1.55; letter-spacing: -.05em; margin-top: 22px; }
.feature > p { font-size: 16px; line-height: 2; color: var(--muted); margin-top: 20px; letter-spacing: -.025em; }
.feature:target .feature-number { background: var(--accent); color: var(--background); border-color: var(--accent); }
.contact { background: var(--surface); border-block: 1px solid var(--line); }
.contact-inner { padding-block: 64px; display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.contact h2 { margin-top: 14px; font-size: 28px; font-weight: 600; letter-spacing: -.04em; }
.contact-description { font-size: 13px; color: var(--muted); margin-top: 17px; line-height: 1.9; }
.contact-link { padding-block: 16px; border-bottom: 1px solid var(--accent); display: flex; gap: 36px; align-items: center; color: var(--accent); font: 17px/1.6 Arial, sans-serif; }
.contact-link:hover { color: var(--text); border-color: var(--text); }
.contact-link > span:first-child { overflow-wrap: anywhere; }
.site-footer { padding-block: 28px; display: flex; align-items: center; gap: 25px; font-size: 11px; color: var(--muted); }
.footer-brand { font: 10px Arial, sans-serif; letter-spacing: .12em; color: var(--text); }
.site-footer a { margin-left: auto; min-height: 44px; display: inline-flex; align-items: center; gap: 10px; }

@media (max-width: 1050px) {
  .container, .header-inner { width: calc(100% - 64px); }
  .hero-grid { gap: 42px; grid-template-columns: 1fr 1fr; }
  h1 { font-size: 80px; }
  .hero-tagline { font-size: 14px; }
  .hero-description > p { font-size: 15px; }
  .gameplay-layout { grid-template-columns: 170px minmax(0, 1fr); gap: 40px; }
  .contact-inner { flex-wrap: wrap; }
}

@media (max-width: 700px) {
  :root { --header-height: 72px; }
  .container, .header-inner { width: calc(100% - 40px); }
  .header-inner { gap: 14px; }
  .wordmark { font-size: 14px; letter-spacing: .06em; }
  .wordmark span { font-size: 7px; letter-spacing: .47em; margin-top: 5px; }
  .main-nav { gap: 16px; font-size: 11px; }
  .main-nav a { white-space: nowrap; gap: 3px; }
  .hero-inner { padding-top: 24px; }
  .hero-meta { font-size: 9px; letter-spacing: .1em; }
  .hero-grid { grid-template-columns: 1fr; gap: 38px; padding-block: 46px 32px; }
  h1 { font-size: clamp(64px, 16vw, 90px); margin-block: 18px 24px; }
  .hero-tagline { font-size: 14px; line-height: 1.95; }
  .hero-description { padding-top: 20px; }
  .hero-description > p { margin-top: 18px; font-size: 15px; line-height: 1.95; }
  .primary-link { margin-top: 24px; width: 100%; }
  .genre-list { flex-wrap: wrap; gap: 14px 20px; padding-block: 22px; font-size: 10px; }
  .genre-list li { gap: 7px; }
  .gameplay { padding-block: 50px; }
  .gameplay-heading { padding-bottom: 26px; }
  .gameplay-heading h2 { font-size: 24px; }
  .section-count { display: none; }
  .gameplay-layout { display: block; }
  .section-index { border-right: 0; border-bottom: 1px solid var(--line); }
  .section-index nav { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; padding-block: 20px; }
  .index-label { grid-column: 1 / -1; margin-bottom: 10px; }
  .section-index a { gap: 12px; font-size: 11px; }
  .feature { padding-block: 32px 36px; }
  .feature h3 { font-size: 25px; margin-top: 18px; }
  .feature > p { font-size: 15px; line-height: 1.95; margin-top: 16px; }
  .desktop-break { display: none; }
  .contact-inner { display: block; padding-block: 40px; }
  .contact h2 { font-size: 25px; }
  .contact-link { font-size: 16px; justify-content: space-between; gap: 12px; margin-top: 28px; }
  .site-footer { gap: 10px 20px; flex-wrap: wrap; padding-block: 20px; }
  .footer-brand { width: 100%; }
}

@media (max-width: 360px) {
  .container, .header-inner { width: calc(100% - 32px); }
  .main-nav { gap: 10px; }
  .wordmark { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}