/* /about and /ko/about (built by scripts/promo/about.mjs). Always dark: the app's own look. */

@font-face { font-family: 'Anton'; src: url('/fonts/Anton.woff2') format('woff2'); font-display: swap; }
@font-face { font-family: 'Pretendard Black'; src: url('/fonts/Pretendard-Black.woff2') format('woff2'); font-display: swap; unicode-range: U+AC00-D7A3, U+3131-318E; }
@font-face { font-family: 'Unbounded'; src: url('/fonts/Unbounded-Black.woff2') format('woff2'); font-weight: 900; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/fonts/Inter-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/fonts/Inter-SemiBold.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Pretendard'; src: url('/fonts/Pretendard-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; unicode-range: U+AC00-D7A3, U+3131-318E; }
@font-face { font-family: 'Pretendard'; src: url('/fonts/Pretendard-SemiBold.woff2') format('woff2'); font-weight: 600; font-display: swap; unicode-range: U+AC00-D7A3, U+3131-318E; }
@font-face { font-family: 'JetBrains Mono'; src: url('/fonts/JetBrainsMono-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('/fonts/JetBrainsMono-Medium.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  color-scheme: dark;
  --bg: #000;
  --panel: #0b0b0e;
  --panel-2: #121216;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f5f5f7;
  --muted: #8e8e96;
  --cobalt: #1047ff;
  --cobalt-text: #4a76ff;
  --sans: 'Inter', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', 'Malgun Gothic', sans-serif;
  --display: 'Anton', 'Pretendard Black', Impact, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --w: 1080px;
  --gutter: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; }
img { max-width: 100%; }
h1, h2, h3, p { margin: 0; }
section { scroll-margin-top: 64px; }
:lang(ko) body, :lang(ko) .body, :lang(ko) .lead { word-break: keep-all; }

/* Nav: a thin glass bar, like a product page. */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(0, 0, 0, 0.6); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid transparent; transition: border-color 0.3s; }
.nav.scrolled { border-color: var(--line); }
.nav-in { max-width: var(--w); margin: 0 auto; height: 52px; padding: 0 var(--gutter); display: flex; align-items: center; gap: 28px; }
.mark { font: 900 17px/1 'Unbounded', var(--sans); letter-spacing: 0.5px; text-decoration: none; }
.nav-links { display: flex; gap: 24px; margin-left: auto; font-size: 13px; color: #c7c7cc; }
.nav-links a { text-decoration: none; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.langs { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border-radius: 999px; background: rgba(255, 255, 255, 0.08); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06); white-space: nowrap; }
.langs a { font: 600 12px/1 var(--sans); letter-spacing: 0.2px; text-decoration: none; color: var(--muted); padding: 6px 11px; border-radius: 999px; transition: color 0.2s, background 0.2s; }
.langs a:hover { color: var(--text); }
.langs a[aria-current] { background: var(--text); color: #000; }
.foot .langs { justify-self: start; }
.pill { font-size: 13px; font-weight: 600; text-decoration: none; background: var(--cobalt); color: #fff; padding: 7px 14px; border-radius: 999px; white-space: nowrap; }

/* Type */
.display { font-family: var(--display); font-weight: 400; text-transform: uppercase; line-height: 0.92; letter-spacing: -0.5px; }
.eyebrow, .label { font: 500 13px/1 var(--mono); letter-spacing: 2px; text-transform: uppercase; color: var(--cobalt-text); }
h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(44px, 7vw, 88px); line-height: 0.95; margin-top: 16px; }
:lang(ko) h2, :lang(ko) .display { letter-spacing: -0.02em; line-height: 1.08; }
.body { font-size: clamp(18px, 2vw, 21px); line-height: 1.5; color: var(--muted); margin-top: 22px; max-width: 560px; }
.body.center { margin-left: auto; margin-right: auto; text-align: center; }
.lead { font-size: clamp(20px, 2.4vw, 26px); line-height: 1.4; color: var(--muted); max-width: 640px; margin: 26px auto 0; }

/* Buttons */
.ctas { display: flex; gap: 28px; align-items: center; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
.btn { display: inline-block; background: var(--cobalt); color: #fff; font-weight: 600; font-size: 17px; text-decoration: none; padding: 15px 28px; border-radius: 999px; transition: transform 0.2s, background 0.2s; }
.btn:hover { background: #2b5cff; transform: translateY(-1px); }
.link { color: var(--cobalt-text); text-decoration: none; font-size: 17px; }
.link:hover { text-decoration: underline; }

/* Hero */
.hero { text-align: center; padding: 96px var(--gutter) 0; overflow: hidden; }
.hero .eyebrow { margin-bottom: 26px; }
.hero h1 { font-size: clamp(84px, 17vw, 220px); }
/* Hangul is wider than Anton's capitals: the Korean headline fits the phone width. */
:lang(ko) .hero h1 { font-size: clamp(52px, 13vw, 170px); }
:lang(ko) .close h2 { font-size: clamp(48px, 10vw, 130px); }
.hero-art { --p: 0; position: relative; height: clamp(520px, 72vw, 760px); max-width: 980px; margin: 64px auto 0; }
.glow { position: absolute; left: 50%; top: 18%; width: 80%; height: 70%; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(16, 71, 255, 0.55), rgba(16, 71, 255, 0) 70%); filter: blur(30px); }
.phone { display: block; height: auto; filter: drop-shadow(0 40px 60px rgba(0, 0, 0, 0.6)); }
.hero-art .phone { position: absolute; top: 0; width: clamp(240px, 33vw, 340px); }
.hero-art .front { left: 50%; transform: translateX(-50%); z-index: 2; }
.hero-art .side { top: 10%; width: clamp(200px, 27vw, 290px); opacity: 0.9; }
.hero-art .left { left: 50%; transform: translateX(calc(-50% - clamp(150px, 24vw, 300px) - var(--p) * 40px)) rotate(calc(-6deg - var(--p) * 2deg)); }
.hero-art .right { left: 50%; transform: translateX(calc(-50% + clamp(150px, 24vw, 300px) + var(--p) * 40px)) rotate(calc(6deg + var(--p) * 2deg)); }

/* The statement */
.intent { max-width: 940px; margin: 0 auto; padding: 160px var(--gutter) 120px; text-align: center; }
.statement { font: 600 clamp(32px, 5vw, 60px)/1.15 var(--sans); letter-spacing: -1px; }
.statement em { font-style: normal; background: linear-gradient(90deg, #6f8dff, #1047ff 60%, #9f7bff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.intent .sub { font-size: clamp(18px, 2vw, 22px); color: var(--muted); margin-top: 30px; line-height: 1.55; }

/* Copy + phone */
.split { max-width: var(--w); margin: 0 auto; padding: 120px var(--gutter); display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center; }
.split.flip .copy { order: 2; }
.art { display: flex; justify-content: center; }
.art .phone { width: min(340px, 78vw); }
.points { margin: 36px 0 0; display: grid; gap: 22px; }
.points div { border-top: 1px solid var(--line); padding-top: 18px; }
.points dt { font-weight: 600; font-size: 18px; }
.points dd { margin: 6px 0 0; color: var(--muted); font-size: 16px; line-height: 1.5; }

/* Codes */
.codes, .feed, .privacy { max-width: var(--w); margin: 0 auto; padding: 120px var(--gutter); text-align: center; }
.codes .label, .feed .label, .privacy .label, .beliefs .label { display: block; }
.ticket { position: relative; display: inline-flex; align-items: stretch; margin: 56px auto 0; border: 2px solid var(--text); background: #000; text-align: left; }
.t-label { position: absolute; margin: 10px 0 0 16px; font: 500 11px/1 var(--mono); letter-spacing: 1px; color: var(--muted); }
.t-code { font: 500 clamp(40px, 8vw, 96px)/1 var(--mono); letter-spacing: 2px; padding: 34px 26px 22px; display: flex; }
.t-code span { display: inline-block; }
.js .ticket .t-code span { opacity: 0; transform: translateY(0.4em); }
.js .ticket.in .t-code span { animation: flip 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; animation-delay: calc(var(--i) * 70ms + 150ms); }
@keyframes flip { to { opacity: 1; transform: none; } }
.t-spark { display: flex; align-items: center; justify-content: center; background: var(--cobalt); color: #fff; font-size: clamp(32px, 5vw, 56px); padding: 0 clamp(18px, 3vw, 34px); }
.kinds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 56px; text-align: left; }
.kind { background: var(--panel); border: 1px solid var(--line); border-radius: 22px; padding: 28px; }
.prefix { font: 500 22px/1 var(--mono); color: var(--cobalt-text); }
.kind h3, .level h3, .belief h3 { font-size: 21px; font-weight: 600; margin-top: 14px; }
.kind p, .level p, .belief p { color: var(--muted); font-size: 16px; margin-top: 8px; line-height: 1.5; }
.pair { display: flex; justify-content: center; gap: clamp(20px, 5vw, 72px); margin-top: 72px; flex-wrap: wrap; }
.pair figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.pair .phone { width: min(320px, 74vw); }
figcaption { font: 13px/1.5 var(--mono); color: var(--muted); max-width: 300px; }

/* Listen: a raised panel */
.listen { padding: 40px var(--gutter); }
.listen-in { max-width: var(--w); margin: 0 auto; background: linear-gradient(180deg, var(--panel-2), var(--panel)); border: 1px solid var(--line); border-radius: 36px; padding: clamp(36px, 6vw, 80px); display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.services { list-style: none; padding: 0; margin: 30px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.services li { border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font-size: 15px; background: #000; }
.note { margin-top: 28px; color: var(--muted); font-size: 14px; line-height: 1.55; max-width: 460px; }

/* Privacy */
.levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 56px; text-align: left; }
.level { border: 1px solid var(--line); border-radius: 22px; padding: 28px; background: var(--panel); }
.level.on { border-color: var(--cobalt); box-shadow: 0 0 0 1px var(--cobalt) inset; }
.level h3 { margin-top: 0; }
.checks { list-style: none; padding: 0; margin: 48px auto 0; max-width: 640px; text-align: left; display: grid; gap: 14px; }
.checks li { position: relative; padding-left: 32px; color: #d1d1d6; font-size: 17px; }
.checks li::before { content: '✦'; position: absolute; left: 0; top: 0; color: var(--cobalt-text); }

/* Beliefs */
.beliefs { max-width: var(--w); margin: 0 auto; padding: 120px var(--gutter); text-align: center; }
.beliefs .grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 40px; background: var(--line); border: 1px solid var(--line); border-radius: 26px; overflow: hidden; text-align: left; }
.belief { background: var(--bg); padding: 40px; }
.belief h3 { margin-top: 0; font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 34px; line-height: 1; }

/* Closing */
.close { text-align: center; padding: 120px var(--gutter) 140px; border-top: 1px solid var(--line); max-width: var(--w); margin: 0 auto; }
.close h2 { font-size: clamp(64px, 12vw, 150px); margin: 0; }
.avail { font: 13px/1.5 var(--mono); color: var(--muted); margin-top: 26px; letter-spacing: 0.5px; }

/* Footer */
.foot { border-top: 1px solid var(--line); background: #050506; }
.foot-in { max-width: var(--w); margin: 0 auto; padding: 32px var(--gutter) 48px; display: grid; gap: 16px; font-size: 13px; color: var(--muted); }
.foot nav { display: flex; gap: 22px; flex-wrap: wrap; }
.foot a { text-decoration: none; color: #c7c7cc; }
.foot a:hover { color: var(--text); }

/* Reveal on scroll (only with JavaScript; reduced motion shows everything at once). */
.js .reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .js .ticket .t-code span { opacity: 1; transform: none; animation: none; }
}

/* Phones */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav .langs { margin-left: auto; }
  .split, .listen-in { grid-template-columns: 1fr; gap: 48px; padding-top: 80px; padding-bottom: 80px; }
  .listen-in { padding: 36px 24px; }
  .split.flip .copy { order: 0; }
  .kinds, .levels, .beliefs .grid { grid-template-columns: 1fr; }
  .intent { padding: 110px var(--gutter) 70px; }
  .codes, .feed, .privacy, .beliefs { padding: 80px var(--gutter); }
  .hero { padding-top: 64px; }
  .hero-art { height: 560px; margin-top: 48px; }
  .hero-art .front { width: 250px; }
  .hero-art .side { width: 200px; top: 12%; opacity: 0.55; }
  .hero-art .left { transform: translateX(calc(-50% - 120px)) rotate(-6deg); }
  .hero-art .right { transform: translateX(calc(-50% + 120px)) rotate(6deg); }
  .belief { padding: 28px; }
  .t-code { padding: 30px 16px 16px; }
}

/* Narrow phones: the hero's own button opens PLYNCODE, so the bar keeps the switch. */
@media (max-width: 520px) {
  .nav .pill { display: none; }
  .nav-in { gap: 16px; }
}