:root {
  --color-canvas: #17151b;
  --color-surface: #292530;
  --color-paper: #f7f1e5;
  --color-paper-deep: #e8dfd0;
  --color-ink: #17151b;
  --color-cream: #fffaf0;
  --color-muted-dark: #d1cad1;
  --color-muted-light: #49424b;
  --color-orange: #ff7847;
  --color-action: #c7ff69;
  --color-rule-dark: #5a515d;
  --color-rule-light: #aea398;
  --font-display: Impact, "Arial Narrow", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-body: "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --page-width: 1280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--color-canvas); color: var(--color-cream); font-family: var(--font-body); font-size: 16px; line-height: 1.6; word-break: keep-all; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: .25em; }
a:focus-visible { outline: 3px solid var(--color-action); outline-offset: 4px; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--color-action); color: var(--color-ink); }
.skip-link { position: absolute; top: -100px; left: var(--space-md); z-index: 20; padding: var(--space-sm) var(--space-md); background: var(--color-action); color: var(--color-ink); }
.skip-link:focus { top: var(--space-md); }
.band-dark { background: var(--color-canvas); color: var(--color-cream); }
.band-paper { background: var(--color-paper); color: var(--color-ink); }
.band-orange { background: var(--color-orange); color: var(--color-ink); }
.section-inner { width: min(calc(100% - 64px), var(--page-width)); margin-inline: auto; }
.eyebrow { margin: 0; font-size: 12px; font-weight: 800; letter-spacing: .05em; line-height: 1.3; }
.lead { font-size: clamp(21px, 2.2vw, 29px); font-weight: 750; line-height: 1.45; letter-spacing: -.035em; }
.body-copy { max-width: 39ch; color: var(--color-muted-light); font-size: 16px; line-height: 1.85; }
.display-title, .section-title { margin: 0; font-family: var(--font-display); font-weight: 900; letter-spacing: -.055em; text-transform: uppercase; }
.display-title { font-size: clamp(84px, 15vw, 220px); line-height: .85; }
.section-title { font-size: clamp(74px, 10vw, 148px); line-height: .87; }
.title-dot { color: var(--color-orange); }
.band-orange .title-dot { color: var(--color-cream); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: var(--space-xl); border: 2px solid transparent; border-radius: 999px; padding: 10px 24px; font-size: 14px; font-weight: 800; line-height: 1.2; white-space: nowrap; transition: transform .18s ease, background-color .18s ease; }
.button:hover { transform: translateY(-2px); text-decoration: none; }
.button:active { transform: translateY(0); }
.button-lime { background: var(--color-action); color: var(--color-ink); }
.button-dark { background: var(--color-ink); color: var(--color-cream); }

.nav-wrap { position: absolute; z-index: 10; top: 24px; right: 0; left: 0; }
.site-nav { display: flex; width: min(calc(100% - 64px), 940px); min-height: 64px; align-items: center; justify-content: space-between; gap: var(--space-xl); margin: auto; border-radius: 999px; padding: 8px 10px 8px 12px; background: var(--color-surface); color: var(--color-cream); }
.nav-brand { display: inline-flex; min-height: 44px; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 18px; letter-spacing: .015em; white-space: nowrap; }
.brand-stamp { display: grid; width: 44px; height: 44px; place-items: center; border-radius: 14px; background: var(--color-orange); color: var(--color-ink); font-size: 20px; }
.nav-links { display: flex; align-items: center; gap: var(--space-lg); font-size: 13px; font-weight: 700; white-space: nowrap; }
.nav-links > a { display: inline-flex; min-height: 44px; align-items: center; }
.nav-links > a[aria-current="page"] { color: var(--color-action); }
.nav-links > .nav-contact { min-height: 44px; gap: var(--space-sm); border: 2px solid var(--color-action); border-radius: 999px; padding: 0 var(--space-md); }

.hero { min-height: min(850px, 100svh); }
.hero-inner { display: flex; min-height: min(850px, 100svh); flex-direction: column; justify-content: flex-end; padding-top: 174px; padding-bottom: var(--space-xl); }
.hero .display-title { max-width: 12ch; }
.hero .display-title em { color: var(--color-action); font-style: normal; }
.hero-bottom { display: flex; align-items: end; justify-content: space-between; gap: var(--space-xl); margin-top: var(--space-2xl); }
.hero-bottom p { margin: 0; font-size: clamp(17px, 2vw, 23px); font-weight: 600; line-height: 1.65; }

.product-band { padding: 112px var(--space-md); }
.product-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(44px, 6vw, 112px); }
.product-copy .eyebrow { margin-bottom: var(--space-xl); }
.product-copy .lead { margin: var(--space-2xl) 0 var(--space-md); }
.product-copy .body-copy { margin: 0; }
.product-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-lg); margin-top: var(--space-xl); }
.release-note { font-size: 13px; font-weight: 700; }
.product-art { align-self: stretch; background: var(--color-ink); color: var(--color-cream); }
.product-art img { width: 100%; height: auto; }
.art-topline, .art-caption { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); padding: var(--space-md) var(--space-lg); font-family: var(--font-display); font-size: 15px; letter-spacing: .04em; }
.art-topline { color: var(--color-action); }
.art-caption { font-size: 23px; }

.manifesto-band { padding-block: 112px; }
.manifesto-layout { display: grid; grid-template-columns: 1fr 2fr; gap: var(--space-2xl); }
.manifesto-layout .eyebrow { padding-top: var(--space-md); color: var(--color-action); }
.manifesto-layout h2 { grid-column: 2; margin: 0; font-size: clamp(46px, 5.4vw, 84px); font-weight: 900; letter-spacing: -.07em; line-height: 1.2; }
.manifesto-layout h2 span { color: var(--color-action); }
.manifesto-detail { display: flex; grid-column: 2; align-items: start; gap: var(--space-xl); max-width: 52ch; border-top: 1px solid var(--color-rule-dark); margin-top: var(--space-lg); padding-top: var(--space-lg); }
.manifesto-detail p { margin: 0; color: var(--color-muted-dark); font-size: 18px; line-height: 1.8; }
.asterisk { color: var(--color-orange); font-size: 32px; line-height: 1; }

.contact-band { padding: 92px var(--space-md) 110px; }
.contact-layout { display: flex; align-items: end; justify-content: space-between; gap: var(--space-2xl); }
.contact-layout .eyebrow { margin-bottom: var(--space-lg); }
.contact-detail { display: flex; flex-direction: column; align-items: start; max-width: 460px; gap: var(--space-sm); padding-bottom: var(--space-sm); }
.contact-detail p { margin: 0 0 var(--space-sm); font-size: 19px; font-weight: 700; }
.contact-detail a { display: inline-flex; min-height: 44px; align-items: center; border-bottom: 2px solid var(--color-ink); font-size: clamp(18px, 2vw, 25px); font-weight: 900; overflow-wrap: anywhere; }
.contact-detail > span { margin-top: var(--space-lg); font-size: 13px; font-weight: 700; overflow-wrap: anywhere; }
.site-footer { border-top: 1px solid var(--color-rule-dark); padding-block: var(--space-2xl) var(--space-3xl); }
.footer-inner { display: flex; justify-content: space-between; gap: var(--space-xl); }
.footer-brand { font-family: var(--font-display); font-size: clamp(28px, 3.5vw, 52px); line-height: 1; }
.footer-brand span { margin-left: var(--space-sm); color: var(--color-action); font-family: var(--font-body); font-size: 15px; vertical-align: top; }
.footer-inner p { margin: var(--space-sm) 0 0; color: var(--color-muted-dark); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.footer-links { display: flex; max-width: 420px; align-content: start; justify-content: end; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); font-size: 13px; }
.footer-links a { display: inline-flex; min-height: 44px; align-items: center; }

.app-hero { padding-block: 200px 112px; }
.app-hero-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr); align-items: center; gap: var(--space-lg); }
.app-hero .display-title { font-size: clamp(80px, 13vw, 190px); }
.app-hero .lead { margin: var(--space-xl) 0; }
.app-logo { width: min(100%, 410px); justify-self: end; image-rendering: auto; filter: url(#mix-master-outline); }
.status-line { display: inline-flex; align-items: center; gap: var(--space-sm); border: 1px solid var(--color-rule-dark); border-radius: 999px; padding: 10px 16px; font-size: 13px; font-weight: 700; }
.status-pip { width: 8px; height: 8px; flex: none; border-radius: 50%; background: var(--color-action); }
.feature-band { padding: 112px var(--space-md) 128px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: var(--space-2xl); }
.section-heading .eyebrow { align-self: start; }
.feature-band .section-title { font-size: clamp(62px, 8vw, 116px); }
.feature-list { margin-top: var(--space-3xl); border-top: 2px solid var(--color-ink); padding-top: var(--space-sm); }
.feature-list article { display: grid; grid-template-columns: minmax(130px, .7fr) minmax(0, 2fr) 30px; gap: var(--space-xl); border-bottom: 1px solid var(--color-rule-light); padding-block: var(--space-xl); }
.feature-no { padding-top: var(--space-sm); font-size: 12px; font-weight: 900; letter-spacing: .1em; }
.feature-list h3 { margin: 0 0 var(--space-sm); font-size: clamp(24px, 3vw, 40px); letter-spacing: -.05em; line-height: 1.2; }
.feature-list p { max-width: 45ch; margin: 0; color: var(--color-muted-light); line-height: 1.75; }
.feature-arrow { font-size: 24px; }
.scene-band { padding: 96px var(--space-md); }
.scene-layout { display: grid; grid-template-columns: minmax(250px, .75fr) minmax(0, 1.25fr); align-items: end; gap: var(--space-3xl); }
.scene-layout h2 { margin: var(--space-xl) 0; font-size: clamp(42px, 5vw, 72px); font-weight: 900; letter-spacing: -.07em; line-height: 1.2; }
.scene-layout p:last-child { max-width: 35ch; margin: 0; font-weight: 650; line-height: 1.8; }
.scene-layout img { width: 100%; border: 10px solid var(--color-ink); }
.app-outro { padding-block: 120px; }
.outro-layout { display: flex; align-items: end; justify-content: space-between; gap: var(--space-3xl); }
.outro-layout .eyebrow { margin-bottom: var(--space-xl); color: var(--color-action); }
.outro-layout h2 { margin: 0; font-size: clamp(46px, 6vw, 86px); font-weight: 900; letter-spacing: -.07em; line-height: 1.18; }
.outro-layout > div:last-child { max-width: 300px; }
.outro-layout > div:last-child p { margin: 0 0 var(--space-xl); color: var(--color-muted-dark); line-height: 1.8; }

.support-hero { padding-block: 190px 110px; }
.support-hero .display-title { font-size: clamp(75px, 13vw, 190px); }
.support-hero .lead { margin: var(--space-2xl) 0 0; }
.support-main { padding: 100px var(--space-md); }
.support-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3xl); }
.support-item { border-top: 2px solid var(--color-ink); padding-top: var(--space-lg); }
.support-index { font-size: 12px; font-weight: 900; letter-spacing: .1em; }
.support-item h2 { margin: var(--space-lg) 0 var(--space-md); font-size: clamp(29px, 3.2vw, 46px); letter-spacing: -.06em; line-height: 1.2; }
.support-item p { max-width: 53ch; margin: 0 0 var(--space-lg); color: var(--color-muted-light); line-height: 1.8; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; border-bottom: 2px solid var(--color-ink); padding-bottom: 3px; font-weight: 850; overflow-wrap: anywhere; }
.support-item-wide { grid-column: 1 / -1; }
.support-item-wide p { max-width: 62ch; }
.docs-band { padding: 100px var(--space-md); }
.docs-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); align-items: end; gap: var(--space-3xl); }
.docs-layout h2 { margin: var(--space-lg) 0 0; font-family: var(--font-display); font-size: clamp(62px, 8vw, 120px); letter-spacing: -.05em; line-height: .9; }
.docs-links { border-top: 2px solid var(--color-ink); }
.docs-links a { display: flex; min-height: 64px; align-items: center; justify-content: space-between; gap: var(--space-md); border-bottom: 1px solid var(--color-ink); font-size: 18px; font-weight: 800; }
.docs-links p { margin: var(--space-lg) 0 0; font-size: 13px; font-weight: 700; }

@media (max-width: 900px) {
  .product-layout, .scene-layout { grid-template-columns: 1fr; }
  .product-art { max-width: 680px; }
  .section-heading { display: block; }
  .section-heading .eyebrow { margin-bottom: var(--space-xl); }
  .app-hero-layout { grid-template-columns: minmax(0, 1fr) minmax(180px, .4fr); }
  .app-logo { align-self: start; }
}

@media (max-width: 680px) {
  .section-inner { width: min(calc(100% - 36px), var(--page-width)); }
  .nav-wrap { top: 14px; }
  .site-nav { width: calc(100% - 24px); align-items: start; flex-wrap: wrap; gap: 0; border-radius: 24px; padding: 8px 12px; }
  .nav-brand { font-size: 17px; }
  .nav-links { width: 100%; justify-content: space-between; gap: var(--space-sm); font-size: 12px; }
  .nav-links > .nav-contact { padding-inline: 12px; }
  .hero, .hero-inner { min-height: clamp(680px, 90svh, 760px); }
  .hero-inner { padding-top: 160px; }
  .display-title { font-size: clamp(69px, 16vw, 110px); }
  .hero-bottom, .contact-layout, .outro-layout, .footer-inner { align-items: start; flex-direction: column; }
  .hero-bottom { margin-top: var(--space-xl); }
  .product-band, .manifesto-band, .feature-band, .scene-band, .app-outro, .support-main, .docs-band { padding-block: 72px; }
  .product-layout { gap: var(--space-2xl); }
  .section-title { font-size: clamp(68px, 14vw, 100px); }
  .product-copy .lead { margin-top: var(--space-xl); }
  .manifesto-layout { display: block; }
  .manifesto-layout h2 { margin-top: var(--space-2xl); }
  .manifesto-detail { gap: var(--space-md); }
  .contact-band { padding-block: 72px; }
  .contact-detail { margin-top: var(--space-lg); }
  .footer-links { justify-content: start; }
  .app-hero { padding-block: 204px 72px; }
  .app-hero-layout { grid-template-columns: 1fr; }
  .app-hero .display-title { font-size: clamp(75px, 16vw, 112px); }
  .app-logo { width: min(70%, 300px); justify-self: center; margin-top: var(--space-xl); }
  .feature-list { margin-top: var(--space-2xl); }
  .feature-list article { grid-template-columns: 1fr 24px; gap: var(--space-md); }
  .feature-no { grid-column: 1 / -1; }
  .feature-list h3 { font-size: 29px; }
  .scene-layout { gap: var(--space-xl); }
  .support-hero { padding-block: 200px 72px; }
  .support-grid, .docs-layout { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .support-item-wide { grid-column: 1; }
  .docs-links a { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}