/* O.POINT — Quintin Lodge 룩(회색 지면·모노 라벨·인덱스) × Trionn 3D
   단일 비주얼 월드: 라이트/다크는 OS 테마가 아니라 '소개서 챕터'가 결정한다. */

@font-face { font-family: "Pretendard"; src: url("../assets/fonts/Pretendard-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Pretendard"; src: url("../assets/fonts/Pretendard-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Pretendard"; src: url("../assets/fonts/Pretendard-SemiBold.woff2") format("woff2"); font-weight: 600; font-display: swap; }

/* 2026-09-15 상은님: 전체 무드 미니멀 블랙 · 오포인트 로고 화이트 */
:root {
  --ground: #0a0a0b;        /* 미니멀 블랙 지면 */
  --ground-dark: #000000;   /* 관점·OPOINT IP 챕터 — 한 단계 더 깊은 검정 */
  --ink: #ededea;
  --ink-2: #86868b;
  --logo: #ffffff;          /* 로고는 순백 */
  --tone: #161618;          /* 톤온톤 자이언트 타이포 */
  --line: rgba(237, 237, 234, 0.14);
  --rule: rgba(237, 237, 234, 0.55);
  --paper: #121214;         /* 슬롯 면 */
  --chip: #26262a;          /* 소개서의 회색 '영상' 탭 */
  --hover: rgba(237, 237, 234, 0.05);
  --accent: #5c5ff5;        /* 소개서 NEW MEDIA 인디고 — 해당 칸에만 */

  --f-ko: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --f-disp: "Bebas Neue", "Arial Narrow", "Helvetica Neue", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Consolas", monospace;

  --gutter: clamp(16px, 3vw, 44px);
  --hdr-h: 64px;
  color-scheme: dark;
}

[data-tone="dark"] {
  --tone: #101012;
  --paper: #0e0e10;
}

* { box-sizing: border-box; }
html { background: var(--ground); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-ko);
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
  transition: background-color 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  overflow-x: hidden;
}
body.is-dark { background: var(--ground-dark); }
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
h1, h2, p, ol, ul, figure { margin: 0; padding: 0; }
ol, ul { list-style: none; }

.mono {
  font-family: var(--f-mono);
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dim { color: var(--ink-2); }

/* ───────── 3D 캔버스 ───────── */
/* 캔버스는 본문 위(z 2) — 로고가 자이언트 타이포 '앞'에 떠 있게. 클릭은 통과 */
#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 2; pointer-events: none; }
main, .hdr { position: relative; z-index: 1; }

/* ───────── 헤더 (Quintin) ───────── */
.hdr {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  height: var(--hdr-h);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; gap: 16px;
  padding: 18px var(--gutter) 0;
  color: var(--ink);
  mix-blend-mode: normal;
}
.hdr[data-tone="dark"] { color: #e9e9e6; }
.hdr-mark { display: flex; align-items: center; gap: 12px; }
.logo-symbol { width: 30px; display: block; color: var(--logo); }
.logo-symbol svg, [data-logo] svg { display: block; width: 100%; height: auto; fill: currentColor; }
.hdr-nav { display: grid; justify-items: start; line-height: 1.25; font-weight: 500; }
.hdr-nav a { opacity: 0.55; transition: opacity 0.25s; }
.hdr-nav a:hover, .hdr-nav a.on { opacity: 1; }
.hdr-right { display: flex; justify-content: flex-end; align-items: center; gap: 18px; }
.counter { font-variant-numeric: tabular-nums; }
.pill { border: 1px solid currentColor; border-radius: 0; padding: 5px 13px; font-weight: 500; }
.pill:hover { background: var(--ink); color: var(--ground); }
.hdr[data-tone="dark"] .pill:hover { background: #e9e9e6; color: #0d0d0e; }

/* ───────── 섹션 공통 ───────── */
.sec {
  position: relative;
  padding-inline: var(--gutter);
  padding-block: clamp(96px, 14vh, 160px);
  display: grid; gap: clamp(20px, 3vw, 36px);
  align-content: start;
}
.stamp { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.sec-title {
  font-family: var(--f-disp);
  font-stretch: 125%;
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 68px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  padding-top: 18px;
  position: relative;
  text-wrap: balance;
}
.sec-title::before { content: ""; position: absolute; top: 0; left: 0; width: 64px; height: 2px; background: var(--logo); }
.lede { font-size: clamp(17px, 1.7vw, 22px); font-weight: 500; line-height: 1.5; max-width: 34em; text-wrap: balance; }

/* ───────── 01 표지 ───────── */
.hero {
  min-height: 100svh;
  grid-template-rows: auto 1fr auto auto;
  padding-block: calc(var(--hdr-h) + 40px) 28px;
}
.hero-top { display: flex; justify-content: space-between; gap: 16px; color: var(--ink-2); max-width: 520px; }
.orn { letter-spacing: 0; }
.hero-stage { position: relative; min-height: 38vh; display: grid; place-items: center; }
.gl-fallback { width: min(46vw, 360px); filter: invert(1); mix-blend-mode: screen; transition: opacity 0.4s; }
.gl-on .gl-fallback { opacity: 0; }
.hero-word { width: 100%; color: var(--logo); line-height: 0; }
.hero-word [data-logo] { display: block; width: 100%; }
.hero-hint { color: var(--ink-2); justify-self: end; }

/* ───────── 02 ───────── */
.statement { min-height: 80vh; align-content: center; }
.statement-text {
  font-size: clamp(38px, 7.2vw, 120px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.035em;
  max-width: 9em;
  text-wrap: balance;
}

/* ───────── 챕터 (03·12·16) ───────── */
.chapter.tall { height: 190vh; padding-block: 0; display: block; }
.chapter.xtall { height: 260vh; }
.sticky {
  position: sticky; top: 0; height: 100vh;
  display: grid; align-content: space-between;
  padding-block: calc(var(--hdr-h) + 40px) clamp(28px, 6vh, 64px);
  overflow: hidden;
}
.giant {
  position: absolute; left: calc(var(--gutter) * -0.2); right: 0; top: 50%;
  transform: translateY(-58%);
  font-family: var(--f-disp); font-stretch: 125%; font-weight: 800;
  font-size: clamp(64px, 15.5vw, 300px);
  line-height: 0.82; letter-spacing: -0.045em;
  color: var(--tone);
  white-space: nowrap;
  pointer-events: none; user-select: none;
  z-index: -1;
}
#s12 .giant, #s16 .giant { font-size: clamp(52px, 11.2vw, 220px); white-space: normal; max-width: 9ch; }
.chapter-copy { display: grid; gap: 10px; max-width: 520px; }
.chapter-ko { font-size: clamp(64px, 9vw, 150px); font-weight: 600; line-height: 1; letter-spacing: -0.04em; }
.tracked { letter-spacing: 0.62em; }
.chapter-sub { font-size: clamp(16px, 1.5vw, 20px); font-weight: 500; }

/* ───────── 원통 갤러리 (교체 자리 · Quintin 방식) ─────────
   이미지는 WebGL 캔버스가 .drum-stage 영역에 그린다. 아래 img 는 WebGL 불가 시 대체. */
.slot { position: relative; width: 100%; max-width: 100%; display: grid; gap: 10px; }
.slot.wide { max-width: 1280px; }
.drum-stage { position: relative; width: 100%; max-width: min(100%, calc(84vh * var(--sar, 1.2))); }
.drum-fallback {
  position: absolute; left: 5%; width: 90%; top: 50%; transform: translateY(-50%);
  aspect-ratio: var(--ratio, 16 / 9); object-fit: cover;
}
.gl-on .drum-fallback { visibility: hidden; }
/* ── 갤러리 공통 ── */
.g-frame { position: relative; overflow: hidden; aspect-ratio: var(--ratio, 16 / 9); background: var(--paper); max-width: 100%; }
.g-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.g-cap { display: flex; justify-content: space-between; gap: 12px; color: var(--ink-2); text-transform: none; font-variant-numeric: tabular-nums; }
.card-no { position: absolute; left: 12px; bottom: 10px; color: #8a8a8a; mix-blend-mode: difference; }

/* stack — 각진 카드가 층을 이루다 한 장씩 걷힌다 */
.g-stack .g-frame { overflow: visible; background: transparent; }
.g-stack .card { position: absolute; inset: 0; overflow: hidden; background: var(--paper); outline: 1px solid var(--line); transform-origin: 20% 100%; will-change: transform, opacity; }

/* columns — 두 단이 서로 반대로 흐른다 */
.col-frame { aspect-ratio: calc(var(--ar) * 1) / 1.35; background: transparent; }
.col-track { display: grid; gap: 12px; will-change: transform; }
.col-item { position: relative; aspect-ratio: var(--ratio); overflow: hidden; background: var(--paper); }

/* reveal — 고정된 액자에서 가는 틈이 열리고 다음 장이 밀어 올린다 */
.g-reveal { height: calc(var(--n) * 42vh + 100vh); display: block; }
.rv-sticky { position: sticky; top: calc(var(--hdr-h) + 20px); display: grid; gap: 10px; }
.rv-frame { width: min(100%, calc((100vh - var(--hdr-h) - 110px) * var(--ar))); background: transparent; }
.rv-layer { position: absolute; inset: 0; overflow: hidden; background: var(--paper); will-change: clip-path; }
.rv-layer .g-media { will-change: transform; }
.rv-hud { position: absolute; left: 0; right: 0; bottom: 0; z-index: 50; display: flex; align-items: center; gap: 14px; padding: 12px 16px; color: #8a8a8a; mix-blend-mode: difference; }
.rv-bar { flex: 1; height: 1px; background: rgba(138, 138, 138, 0.35); position: relative; }
.rv-bar b { position: absolute; inset: 0; background: #8a8a8a; transform: scaleX(0); transform-origin: left; }
.g-reveal .g-cap { width: min(100%, calc((100vh - var(--hdr-h) - 110px) * var(--ar))); }

/* rail — 문서 스프레드를 옆으로 넘긴다 */
.slot.g-rail { height: calc(var(--n) * 55vh + 60vh); display: block; margin-inline: calc(var(--gutter) * -1); max-width: none; width: auto; }
.rail-sticky { position: sticky; top: calc(var(--hdr-h) + 20px); overflow: hidden; display: grid; gap: 14px; padding-inline: var(--gutter); }
.rail-track { display: flex; gap: clamp(14px, 2vw, 28px); width: max-content; will-change: transform; }
.rail-item { width: min(68vw, calc((100vh - var(--hdr-h) - 150px) * var(--ar))); display: grid; gap: 8px; }
.rail-no { color: var(--ink-2); font-variant-numeric: tabular-nums; }

.drum-cap { display: flex; justify-content: space-between; gap: 12px; color: var(--ink-2); padding-inline: 5%; text-transform: none; max-width: min(100%, calc(84vh * var(--sar, 1.2))); }

/* 04 */
.s04-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 48px); align-items: end; }
.s04-side { display: grid; gap: 14px; padding-bottom: 6px; }
.morph {
  font-family: var(--f-disp); font-stretch: 125%; font-weight: 800; text-transform: uppercase;
  font-size: clamp(22px, 2.6vw, 40px); letter-spacing: -0.01em; line-height: 1; min-height: 2.1em;
}
/* 05 */
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(12px, 4vw, 72px); max-width: 860px; }

/* ───────── 06 BUSINESS CATEGORY ───────── */
.cats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
/* 고정 구간(데스크톱) — 8개가 다 보이다가 스크롤하면 NEW MEDIA 두 칸만 남아 빛난다 */
.pin { height: 200vh; padding-block: 0; display: block; }
.pin.pin-l { height: 240vh; }
.pin-inner {
  position: sticky; top: 0; min-height: 100vh;
  display: grid; gap: clamp(18px, 2.6vw, 32px); align-content: center;
  padding-block: calc(var(--hdr-h) + 24px) 40px;
}
.cats li {
  display: grid; gap: 6px; align-content: start;
  padding: 22px 20px 30px 0; border-bottom: 1px solid var(--line);
  min-height: 132px;
  position: relative;
  opacity: calc(0.12 + 0.88 * var(--lit, 1));   /* 0928: 스크롤에 따라 하나씩 밝아진다 */
  transform: translateY(calc((1 - var(--lit, 1)) * 14px));
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1), background-color 0.8s;
}
.cats li + li { padding-left: 20px; border-left: 1px solid var(--line); }
.cats li:nth-child(4n + 1) { padding-left: 0; border-left: 0; }
.cats strong { font-size: clamp(16px, 1.45vw, 20px); font-weight: 600; letter-spacing: -0.01em; }
.cats span { font-size: 14px; color: var(--ink-2); }
.cats .nm::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform 0.9s 0.2s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.is-focus .cats li:not(.nm) { opacity: 0.55; }
.is-focus .cats .nm { background: rgba(92, 95, 245, 0.12); transform: translateY(-10px); opacity: 1; }
.is-focus .cats .nm::after { transform: scaleX(1); }
.is-focus .cats .nm span { color: var(--ink); }
.is-focus .cats .nm strong {
  background: linear-gradient(100deg, #ffffff 35%, #b3b5ff 50%, #ffffff 65%);
  background-size: 300% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: nm-sheen 2.8s 0.6s ease-in-out infinite;
}
@keyframes nm-sheen { from { background-position: 100% 0; } to { background-position: 0 0; } }
.nm-bracket {
  margin-left: 50%; width: 50%; height: 26px;
  border: 1px solid var(--accent); border-top: 0;
  position: relative; margin-top: -8px;
  transform: scaleY(0); transform-origin: top; opacity: 0;
  transition: transform 0.6s 0.55s cubic-bezier(0.2, 0.7, 0.2, 1), opacity 0.4s 0.55s;
}
.is-focus .nm-bracket { transform: scaleY(1); opacity: 1; }
.nm-bracket span {
  position: absolute; left: 50%; top: 100%; transform: translate(-50%, 8px);
  color: var(--accent); font-weight: 500; font-size: 12px; letter-spacing: 0.2em;
  padding-top: 6px; border-top: 1px solid var(--accent); white-space: nowrap;
}

/* ───────── 08 ───────── */
.s08-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 2fr); gap: clamp(16px, 3vw, 44px); align-items: center; }
.phone { position: relative; width: min(100%, 420px); aspect-ratio: 604 / 1268; justify-self: center; }
.phone .screen { position: absolute; left: 6.2%; right: 6.2%; top: 2.9%; bottom: 2.9%; border-radius: 9% / 4.3%; overflow: hidden; }
.phone .screen img { width: 100%; height: 100%; object-fit: cover; }
.phone .frame { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(8px, 1vw, 14px); }
.gallery img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }

/* ───────── 09 ───────── */
.feeds { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: clamp(10px, 1.6vw, 28px); align-items: start; }
.feeds img { width: 100%; }
.feeds img:nth-child(even) { transform: translateY(clamp(16px, 4vw, 60px)); }

/* ───────── 10 ───────── */
.media-map { display: grid; grid-template-columns: minmax(0, 420px) minmax(40px, 1fr) minmax(0, 380px); align-items: center; gap: 0; max-width: 1120px; }
.venn .ring { fill: none; stroke: var(--ink); stroke-width: 1.2; }
.venn .overlap circle { fill: var(--accent); stroke: none; opacity: var(--o, 1); }
.venn .core { fill: #ffffff; opacity: var(--q, 1); }
.venn text { fill: var(--ink); font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.02em; text-anchor: middle; }
.map-link { height: 1px; background: var(--accent); position: relative; transform: scaleX(var(--q, 1)); transform-origin: left; }
.map-link::after { content: ""; position: absolute; right: -1px; top: -4px; border: 4.5px solid transparent; border-left: 7px solid var(--accent); }
.casted { background: var(--accent); color: #fff; padding: clamp(24px, 3vw, 40px); display: grid; gap: 10px;
  opacity: calc(0.35 + 0.65 * var(--q, 1)); transform: translateX(calc((1 - var(--q, 1)) * 24px)); }
.casted-title { font-family: var(--f-disp); font-stretch: 112%; font-weight: 700; font-size: clamp(24px, 2.6vw, 38px); line-height: 1; }

/* ───────── 11 흐름 ───────── */
.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.flow li { position: relative; display: grid; gap: 10px; align-content: start; padding: 18px 22px 26px 0; }
.flow li + li { padding-left: 22px; border-left: 1px solid var(--line); }
.flow li:not(:last-child)::after { content: "›"; position: absolute; right: -7px; top: 58px; font-size: 22px; line-height: 1; background: var(--ground); padding: 0 1px; z-index: 1; }
.who { justify-self: start; border: 1px solid var(--ink); border-radius: 0; padding: 2px 8px; font-size: 10px; }
.who.ai { background: var(--accent); border-color: var(--accent); color: #fff; }
.flow .no { font-size: 13px; font-variant-numeric: tabular-nums; color: var(--ink-2); }
.flow strong { font-size: clamp(15px, 1.2vw, 18px); font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; word-break: keep-all; }   /* 0929: 한 줄 */
.flow .d { font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.loop { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: clamp(16px, 2.4vw, 36px); align-items: center; border: 1px dashed var(--accent); padding: clamp(18px, 2.4vw, 32px); max-width: 1120px; }
.loop-steps { display: grid; grid-template-columns: repeat(2, auto); gap: 14px; }
.loop-steps div { display: grid; gap: 4px; padding: 14px 18px; border: 1px dashed var(--line); }
.loop-steps strong { font-weight: 600; }
.loop-steps span { font-size: 13px; color: var(--ink-2); line-height: 1.5; }
.loop-arrow { font-size: 28px; line-height: 1; }
.loop-out { font-size: clamp(15px, 1.35vw, 18px); line-height: 1.6; }
.loop-out em { font-style: normal; color: var(--accent); font-weight: 600; }

/* ───────── 17·18 포트폴리오 인덱스 (Quintin) ───────── */
.index { border-top: 1px solid var(--rule); }
.index li > a, .index li > .row {
  display: grid;
  grid-template-columns: 8ch 8ch minmax(0, 1.4fr) minmax(0, 1fr) 7ch 2ch;
  gap: 16px; align-items: center;
  padding: 12px 0; border-bottom: 1px solid var(--line);
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  transition: background-color 0.2s, padding 0.25s;
}
.index li > a:hover, .index li.on > .row { background: var(--hover); padding-inline: 10px; }
.index .name { font-family: var(--f-ko); font-size: 15px; font-weight: 600; letter-spacing: -0.01em; text-transform: none; }
.index .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.index .tags i { font-style: normal; border: 1px solid var(--line); border-radius: 0; padding: 1px 8px; font-family: var(--f-ko); font-size: 11px; letter-spacing: 0; text-transform: none; }
.index .sample { color: var(--accent); }
.index .go { text-align: right; }

.feature { display: grid; gap: 12px; max-width: 1280px; }
.feature-bar { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--rule); }
.feature-bar span { padding: 10px 16px; }
.feature-bar span + span { border-left: 1px solid var(--line); }
.feature-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.feature-cards div { background: var(--paper); padding: 18px 20px 22px; display: grid; gap: 6px; }
.feature-cards b { font-size: 13px; font-weight: 600; }
.feature-cards p { font-size: 14px; color: var(--ink-2); }

.hover-preview {
  position: fixed; left: 0; top: 0; z-index: 20; width: 240px; aspect-ratio: 4 / 5; object-fit: cover;
  pointer-events: none; transform: translate(-50%, -50%);
}

/* ───────── 푸터 ───────── */
.sec.foot { padding-block: clamp(80px, 12vh, 140px) 28px; gap: clamp(36px, 5vw, 72px); justify-items: stretch; text-align: left; }
.sec.foot > * { max-width: none; }
.foot-word { margin: 0; line-height: 0; color: var(--logo); width: 100%; }
.foot-word a { display: block; color: inherit; }
.foot-word [data-logo] { display: block; width: 100%; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(32px, 6vw, 96px); align-items: end; width: 100%; }
.sec.foot .foot-left, .sec.foot .foot-left > * { justify-items: start; text-align: left; margin-inline: 0; }
.foot-left { display: grid; gap: clamp(22px, 2.6vw, 36px); justify-items: start; }
.foot-person, .foot-company { display: grid; gap: 4px; margin: 0; }
.foot-label { color: var(--accent); font-weight: 500; letter-spacing: 0.18em; font-size: 12px; margin: 0; }
.foot-name { font-size: clamp(18px, 1.6vw, 22px); font-weight: 600; margin: 0; }
.foot-person p, .foot-company dd, .foot-company dt { margin: 0; }
.foot-person a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule); text-transform: none; }
.foot-person a:hover { border-bottom-color: var(--ink); }
.foot-company { display: flex; flex-wrap: wrap; gap: 6px clamp(20px, 2.6vw, 40px); }
.foot-company div { display: flex; align-items: baseline; gap: 10px; font-size: 14px; line-height: 1.8; }
.foot-company dd.mono { font-size: 13px; letter-spacing: 0.06em; }
.foot-company dt { color: var(--ink-2); font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.08em; white-space: nowrap; }
.foot-right { display: grid; gap: 14px; justify-items: end; text-align: right; align-content: end; }
.foot-actions { display: grid; gap: 14px; justify-items: end; }
.foot-download { display: inline-block; padding: 12px 20px; font-size: 13px; letter-spacing: 0.1em; background: var(--ink); color: var(--ground); border-color: var(--ink); text-decoration: none; }
.foot-download:hover { background: transparent; color: var(--ink); }
.foot-mail { font-size: 13px; letter-spacing: 0.14em; color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent); }
.foot-mail:hover { color: var(--ink); border-bottom-color: var(--ink); }
.foot-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 18px; width: 100%; }
.foot-row a { color: inherit; text-decoration: none; }

/* ───────── 반응형 ───────── */
@media (max-width: 900px) {
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .foot-right { justify-items: start; text-align: left; }
  .foot-actions { justify-items: start; }
  .foot-company { flex-direction: column; gap: 4px; }
  .hdr { grid-template-columns: 1fr auto; }
  .hdr-nav { display: none; }
  .hdr-label { display: none; }
  .cats, .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cats li, .cats li + li, .flow li, .flow li + li { padding-left: 0; border-left: 0; padding-right: 12px; }
  .flow li:not(:last-child)::after { display: none; }
  .nm-bracket, #s06 .nm-bracket { margin-left: 0; width: 100%; }
  .pin, .pin.pin-l { height: auto; padding-block: clamp(96px, 14vh, 160px); }
  .pin-inner { position: relative; min-height: 0; padding-block: 0; }
  .map-link { transform: scaleY(var(--q, 1)); transform-origin: top; }
  .s04-grid, .s08-grid, .media-map, .loop { grid-template-columns: minmax(0, 1fr); }
  .map-link { width: 1px; height: 48px; justify-self: center; }
  .map-link::after { right: -4px; top: auto; bottom: -1px; border: 4.5px solid transparent; border-top: 7px solid var(--accent); }
  .feeds { grid-template-columns: repeat(5, 62vw); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 12px; }
  .feeds img { scroll-snap-align: start; }
  .feeds img:nth-child(even) { transform: none; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-cards, .feature-bar { grid-template-columns: minmax(0, 1fr); }
  .rail-item { width: 82vw; }
  .slot.g-rail { height: auto; }
  .rail-sticky, .stack-group .rail-sticky, .g-yt .rail-sticky { position: relative; top: auto; min-height: 0; }
  .rail-track { overflow-x: auto; width: auto; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; padding-bottom: 8px; }
  .rail-item { scroll-snap-align: start; flex: 0 0 auto; }
  .g-reveal { height: calc(var(--n) * 34vh + 80vh); }
  .feature-bar span + span { border-left: 0; border-top: 1px solid var(--line); }
  .index li > a, .index li > .row { grid-template-columns: 7ch minmax(0, 1fr) 2ch; row-gap: 6px; }
  .index .yr, .index .status { display: none; }
  .index .tags { grid-column: 2 / 3; }
  .hover-preview { display: none; }
  .chapter.tall { height: 160vh; }
  .chapter.xtall { height: 220vh; }
}
@media (max-width: 560px) {
  .cats, .flow { grid-template-columns: minmax(0, 1fr); }
  .loop-steps { grid-template-columns: minmax(0, 1fr); }
  .hero-top { flex-direction: column; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .chapter.tall, .chapter.xtall, .pin, .pin.pin-l, .g-reveal, .g-rail { height: auto; }
  .rv-sticky, .rail-sticky { position: relative; }
  .rail-track { overflow-x: auto; width: auto; }
  .pin-inner { position: relative; }
  .sticky { position: relative; height: auto; min-height: 90vh; }
}

/* ═════════════ 2026-09-16 스토리 구조 · 포트폴리오 반영 ═════════════ */

/* 진행 바 */
.progress { position: fixed; left: 0; right: 0; top: 0; height: 2px; z-index: 12; pointer-events: none; }
.progress i { display: block; height: 100%; background: var(--logo); transform: scaleX(0); transform-origin: left; }

/* 헤더 챕터 메뉴 — 챕터마다 장 눈금(지금 어느 챕터의 몇 번째 장인지) */
.hdr-nav a { display: flex; align-items: center; gap: 10px; }
.hdr-nav .st-ticks { display: inline-flex; gap: 3px; }
.hdr-nav .st-ticks i { width: 9px; height: 2px; background: currentColor; opacity: 0.25; transition: opacity 0.3s, width 0.3s; }
.hdr-nav .st-ticks i.done { opacity: 0.7; }
.hdr-nav .st-ticks i.on { opacity: 1; width: 20px; }
.hdr-nav a.done { opacity: 0.8; }

/* 장 번호 옆 챕터명 · 챕터 표지 태그 */
.stamp-ch { margin-left: 14px; padding-left: 14px; border-left: 1px solid var(--line); }
.chapter-tag { display: flex; gap: 16px; margin-top: 8px; }
.sticky > .chapter-tag { position: absolute; top: calc(var(--hdr-h) + 64px); left: var(--gutter); }
.chapter .sticky { padding-inline: 0; }

/* NEW MEDIA 흐름 단계 */
.nm-steps { display: flex; flex-wrap: wrap; gap: 0; border-top: 1px solid var(--line); max-width: 760px; }
.nm-steps li { flex: 1 1 0; min-width: 96px; }
.nm-steps a { display: flex; gap: 8px; padding: 9px 12px 9px 0; color: var(--ink-2); position: relative; transition: color 0.25s; }
.nm-steps a::before { content: ""; position: absolute; left: 0; right: 12px; top: -1px; height: 2px; background: transparent; }
.nm-steps b { font-weight: 500; opacity: 0.6; }
.nm-steps .done a { color: var(--ink); }
.nm-steps .done a::before { background: var(--line); background: rgba(237, 237, 234, 0.4); }
.nm-steps .on a { color: #fff; }
.nm-steps .on a::before { background: var(--accent); }
.nm-steps a:hover { color: var(--ink); }

/* 등장 */
.rv { opacity: 0; transform: translateY(28px); transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 1s cubic-bezier(0.2, 0.7, 0.2, 1); }
.rv.in { opacity: 1; transform: none; }
.lede.rv { transition-delay: 0.08s; }
.nm-steps.rv { transition-delay: 0.04s; }

/* 실제 자료 캡션 */
.g-cap.is-real span:first-child { color: var(--ink); }

/* 07 필름 재생 */
.film-play {
  justify-self: start; display: inline-flex; align-items: center; gap: 12px;
  background: none; color: var(--ink); border: 1px solid var(--rule); padding: 10px 18px 10px 14px; cursor: pointer;
  font: inherit; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.08em;
  transition: background-color 0.25s, color 0.25s;
}
.film-play:hover { background: var(--ink); color: var(--ground); }
.film-play .tri { width: 0; height: 0; border: 6px solid transparent; border-left: 10px solid currentColor; border-right: 0; }
.film-play .dim { margin-left: 4px; }
.film-box { padding: 0; border: 0; background: transparent; max-width: none; max-height: none; width: 100vw; height: 100vh; }
.film-box::backdrop { background: rgba(0, 0, 0, 0.92); }
.film-inner { width: min(92vw, calc((100vh - 120px) * 16 / 9)); margin: 60px auto 0; display: grid; gap: 12px; }
.film-top { display: flex; justify-content: space-between; color: #e9e9e6; }
.film-top button { background: none; border: 0; color: inherit; font: inherit; cursor: pointer; letter-spacing: 0.08em; }
.film-inner video { width: 100%; aspect-ratio: 16 / 9; background: #000; }

/* 08 페르소나 라이프스타일 레일 */
.personas { display: grid; gap: 16px; margin-top: clamp(24px, 4vw, 56px); }
.ps-head { display: flex; justify-content: space-between; border-top: 1px solid var(--rule); padding-top: 10px; }
.ps-rows { display: grid; gap: 10px; }
.ps-row { display: grid; grid-template-columns: 12ch minmax(0, 1fr); gap: 16px; align-items: center; overflow: hidden; }
.ps-name { display: flex; gap: 10px; }
.ps-view { overflow: hidden; min-width: 0; }
.ps-name b { font-weight: 500; color: var(--ink-2); }
.ps-track { display: flex; gap: 8px; width: max-content; animation: ps-flow 70s linear infinite; animation-direction: var(--adir, normal); }
.ps-row[style*="--dir:-1"] .ps-track { animation-direction: reverse; }
.ps-track img { height: clamp(120px, 14vw, 190px); width: auto; aspect-ratio: 4 / 5; object-fit: cover; }
.ps-row:hover .ps-track { animation-play-state: paused; }
@keyframes ps-flow { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* 09 피드 캡션 */
.feeds figure { display: grid; gap: 10px; }
.feeds figure:nth-child(even) { transform: translateY(clamp(16px, 4vw, 60px)); }
.feeds img:nth-child(even) { transform: none; }

/* 17 피처 */
.feature-head { display: grid; gap: 6px; }
.feature-head h3 { margin: 0; font-size: clamp(24px, 2.6vw, 40px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; }
.feature-bar { grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); }
.feature-bar span { display: grid; gap: 2px; text-transform: none; }
.feature-bar b { font-weight: 400; font-size: 10px; }
.feature-cards p { line-height: 1.6; }
.links { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.links a { color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.links a:hover { border-color: var(--ink); }
.feature > .slot { padding-top: clamp(28px, 4vw, 56px); }
.feature .g-stack .g-frame { max-width: min(100%, calc(62vh * 16 / 9)); }
.index .row { cursor: pointer; }
.index .name em { font-style: normal; color: var(--ink-2); font-weight: 500; margin-right: 10px; }
.index li.on > .row { background: var(--hover); padding-inline: 10px; }
.index li > .row:hover { background: var(--hover); padding-inline: 10px; }

/* 18 필터 · 펼침 */
.filters { display: flex; gap: 6px; }
.filters button { background: none; border: 1px solid var(--line); color: var(--ink-2); font: inherit; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.06em; padding: 6px 14px; cursor: pointer; }
.filters button.on { border-color: var(--ink); color: var(--ink); }
.works18 .go { transition: transform 0.3s; }
.works18 li.open .go { transform: rotate(45deg); }
.works18 .detail { display: none; gap: 14px; padding: 16px 0 26px; border-bottom: 1px solid var(--line); }
.works18 li.open .detail { display: grid; animation: dt-in 0.6s cubic-bezier(0.2, 0.7, 0.2, 1); }
@keyframes dt-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.detail-copy { display: grid; gap: 6px; max-width: 60em; font-size: 14px; color: var(--ink-2); }
.detail-copy p:not(.mono):first-of-type { color: var(--ink); }
.strip { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 8px; scroll-snap-type: x proximity; overscroll-behavior-x: contain; }
.strip .clip { position: relative; flex: none; display: block; scroll-snap-align: start; }
.strip img { height: clamp(200px, 30vw, 380px); width: auto; max-width: none; background: var(--paper); }
.strip .clip.is-link span { position: absolute; left: 10px; bottom: 10px; background: rgba(0, 0, 0, 0.7); color: #fff; padding: 4px 8px; }
.strip .clip.is-link:hover img { opacity: 0.85; }

@media (max-width: 900px) {
  .ps-row { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .feeds figure:nth-child(even) { transform: none; }
  .feeds { grid-template-columns: repeat(5, 62vw); }
  .stamp-ch { display: none; }
  .nm-steps li { min-width: 0; }
  .nm-steps a { padding-right: 6px; font-size: 10px; }
  .index .name em { display: block; margin: 0; }
  .strip img { height: 46vw; }
}
@media (prefers-reduced-motion: reduce) {
  .ps-track { animation: none; }
  .rv { opacity: 1; transform: none; }
}
.index .n, .index .yr, .index .status { white-space: nowrap; }
@media (max-width: 900px) { .index li > .row, .index li > a { grid-template-columns: 8.5ch minmax(0, 1fr) 2ch; } }

/* ═════════════ 2026-09-17 v2 — 중앙 정렬 · 섹션 구분 · Trionn 식 작업 그리드 ═════════════ */

/* 섹션: 가운데 축으로 쌓는다 */
.sec { justify-items: center; text-align: center; padding-block: clamp(88px, 12vh, 140px) clamp(96px, 14vh, 170px); }
.sec > *, .pin-inner > * { max-width: 1320px; width: 100%; }
.sec-title { padding-top: 22px; }
.sec-title::before { left: 50%; transform: translateX(-50%); }
.lede { margin-inline: auto; }
.statement { justify-items: center; }
.statement-text { margin-inline: auto; }

/* 섹션 머리 막대 — 섹션 경계를 한눈에 */
.sec-meta {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px;
  padding-top: 14px; border-top: 1px solid var(--rule); color: var(--ink);
}
.sec-meta span:first-child { justify-self: start; }
.sec-meta span:last-child { justify-self: end; }
.sec-meta span:nth-child(2) { letter-spacing: 0.24em; }
.sec + .sec:not(.chapter) { border-top: 0; }
.stamp-ch { display: none; }

/* 챕터 표지 — 가운데 */
.chapter .sticky { justify-items: center; text-align: center; padding-inline: var(--gutter); }
.chapter .sticky > .sec-meta { position: relative; width: 100%; max-width: 1320px; }
.giant { left: 0; right: 0; text-align: center; }
#s12 .giant, #s16 .giant { max-width: none; margin-inline: auto; left: 0; right: 0; }
.chapter-copy { justify-items: center; max-width: 640px; }
.sticky > .chapter-tag { position: static; justify-content: center; margin-top: 12px; }

/* 04 · 05 · 07 · 08 · 09 */
.s04-grid { align-items: center; max-width: 1180px; }
.s04-side { justify-items: center; }
.pair { margin-inline: auto; }
.film-play { justify-self: center; }
.nm-steps { margin-inline: auto; justify-content: center; }
.nm-steps a { justify-content: center; padding-inline: 6px; }
.nm-steps a::before { left: 6px; right: 6px; }
.s08-grid { max-width: 1180px; }
.ps-head { max-width: 1320px; }
.ps-row { text-align: left; }
.feeds { max-width: 1320px; }
.feeds figcaption { text-align: center; }

/* 06 · 10 · 11 */
.cats li { text-align: center; justify-items: center; padding-inline: 16px !important; }
.cats li:nth-child(4n + 1) { padding-left: 16px !important; }
.nm-bracket { margin-inline: auto 0; }
.media-map { margin-inline: auto; justify-content: center; }
.casted { text-align: left; }
.flow li { justify-items: center; text-align: center; padding-inline: 16px !important; }
.flow li .who { justify-self: center; }
.loop { margin-inline: auto; text-align: left; }

/* 17 · 18 — 숫자 · 클라이언트 흐름 */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--rule); }
.stats div { display: grid; gap: 6px; justify-items: center; padding: clamp(20px, 3vw, 36px) 12px; }
.stats div + div { border-left: 1px solid var(--line); }
.stats b { font-family: var(--f-disp); font-stretch: 125%; font-weight: 800; font-size: clamp(44px, 6vw, 96px); line-height: 0.9; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stats span { color: var(--ink-2); }
.clients { overflow: hidden; padding-block: 6px; border-bottom: 1px solid var(--line); -webkit-mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent); mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent); }
.cl-track { display: flex; align-items: center; gap: 22px; width: max-content; animation: ps-flow 60s linear infinite; font-size: 13px; letter-spacing: 0.08em; }
.cl-track i { font-style: normal; color: var(--ink-2); }

/* 작업 그리드 */
.works-wrap, #works18 { display: grid; gap: clamp(48px, 7vw, 96px); max-width: 1320px; }
.work-group { display: grid; gap: 20px; }
.group-head { display: flex; justify-content: space-between; padding-bottom: 10px; border-bottom: 1px solid var(--rule); }
.works { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); gap: clamp(28px, 3.4vw, 52px) clamp(14px, 1.8vw, 26px); }
.work { display: grid; gap: 14px; align-content: start; cursor: pointer; outline: none; }
.work-media { position: relative; overflow: hidden; background: var(--paper); max-width: 100%; }
.work-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.04); transition: opacity 0.5s, transform 1.2s cubic-bezier(0.2, 0.7, 0.2, 1); }
.work-media img.on { opacity: 1; transform: scale(1); }
.work:hover .work-media img.on, .work:focus-visible .work-media img.on { transform: scale(1.035); }
.work-no { position: absolute; left: 12px; top: 10px; color: #fff; mix-blend-mode: difference; }
.work-open { position: absolute; left: 50%; bottom: 14px; transform: translate(-50%, 8px); background: var(--ink); color: var(--ground); padding: 6px 14px; opacity: 0; transition: opacity 0.3s, transform 0.3s; }
.work:hover .work-open, .work:focus-visible .work-open { opacity: 1; transform: translate(-50%, 0); }
.work:focus-visible .work-media { outline: 2px solid var(--accent); outline-offset: 3px; }
.work-cap { display: grid; gap: 6px; justify-items: center; text-align: center; }
.work-cap h3 { margin: 0; font-size: clamp(18px, 1.6vw, 24px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; text-wrap: balance; }
.work-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.work-tags i { font-style: normal; border: 1px solid var(--line); padding: 1px 9px; font-size: 11px; color: var(--ink-2); }
.work-meta { text-transform: none; }
.filters { justify-content: center; }

/* 상세 창 */
.work-box { padding: 0; border: 0; background: transparent; width: 100vw; height: 100vh; max-width: none; max-height: none; color: var(--ink); }
.work-box::backdrop { background: rgba(0, 0, 0, 0.9); }
.work-inner { width: min(1200px, calc(100vw - 2 * var(--gutter))); height: calc(100vh - 48px); height: calc(100dvh - 48px); margin: 24px auto; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; touch-action: pan-y; background: var(--ground); border: 1px solid var(--line); padding: 0 clamp(20px, 3vw, 44px) clamp(20px, 3vw, 44px); display: grid; gap: 22px; align-content: start; text-align: center; }
.work-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; color: var(--ink-2); text-transform: none; position: sticky; top: 0; background: var(--ground); padding-block: 16px 12px; border-bottom: 1px solid var(--line); z-index: 2; }   /* 0929: 스크롤해도 상단 고정 */
.work-top button { background: none; border: 1px solid var(--c-ign-text); color: var(--c-ign-text); font: inherit; font-weight: 700; cursor: pointer; letter-spacing: 0.1em; padding: 8px 14px; }
.work-top button:hover { background: var(--c-ign-text); color: #fff; }
.work-inner h3 { margin: 0; font-size: clamp(28px, 3.6vw, 52px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; text-wrap: balance; }
.work-copy { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; text-align: left; }
.work-copy div { background: var(--paper); padding: 18px 20px; display: grid; gap: 8px; align-content: start; }
.work-copy b { font-weight: 400; color: var(--ink-2); }
.work-copy p { font-size: 15px; line-height: 1.65; }
.work-gallery { columns: 2 320px; column-gap: 12px; text-align: left; }
.work-gallery.tall { columns: 3 220px; }
.work-gallery > * { display: block; break-inside: avoid; margin-bottom: 12px; position: relative; }
.work-gallery img { width: 100%; height: auto; background: var(--paper); }
.work-gallery .is-link span { position: absolute; left: 10px; bottom: 10px; background: rgba(0, 0, 0, 0.75); color: #fff; padding: 4px 9px; }

@media (max-width: 900px) {
  .works { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats div:nth-child(3) { border-left: 0; }
  .stats div:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .sec-meta span:nth-child(2) { letter-spacing: 0.1em; }
}
@media (max-width: 560px) {
  .works { grid-template-columns: minmax(0, 1fr); }
  .work-group[data-kind="image"] .works { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work-group[data-kind="image"] .work-cap h3 { font-size: 15px; }
}
@media (prefers-reduced-motion: reduce) { .cl-track { animation: none; } }

/* ═════════════ 2026-09-17 v3 — 챕터 컬러 · 고정 묶음 · 04 글자 변형 · 10 벤 · 11 단계 ═════════════ */

:root { --c-sp: #fee336; --c-nm: #fa6120; --c-pov: #41f729; --c-ign: #3b36fe; --c-ign-text: #6f6bff; }
[data-ch="sp"] { --ch: var(--c-sp); }
[data-ch="nm"] { --ch: var(--c-nm); --accent: var(--c-nm); }
[data-ch="pov"] { --ch: var(--c-pov); }
[data-ch="ign"] { --ch: var(--c-ign-text); }

/* 핵심 단어 = 챕터 컬러 */
.hdr-nav a[data-ch] { color: var(--ch); }
.sec-meta span:nth-child(2) { color: var(--ch, var(--ink)); }
.chapter .tracked, .chapter-ko { color: var(--ch); }
.chapter .giant { color: color-mix(in srgb, var(--ch) 16%, transparent); }
.sec[data-ch] .sec-title { color: var(--ch); }
.sec[data-ch] .sec-title::before { background: var(--ch); }
#s06 .nm-bracket { border-color: var(--c-nm); width: 50%; max-width: none; margin-left: 50%; margin-right: 0; }   /* 0928: 끝 두 칸(NEW MEDIA)만 감싼다 */
#s06 .nm-bracket span { color: var(--c-nm); border-color: var(--c-nm); }
#s06 .cats .nm::after { background: var(--c-nm); }
.is-focus .cats .nm { background: color-mix(in srgb, var(--c-nm) 18%, transparent); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c-nm) 55%, transparent); }
.is-focus .cats .nm span { color: var(--c-nm); }
.is-focus .cats .nm strong { background: linear-gradient(100deg, #ffffff 35%, #ffb48a 50%, #ffffff 65%); background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; }
.progress i { background: var(--pch, var(--logo)); transition: background-color 0.4s; }
body[data-ch="sp"] { --pch: var(--c-sp); }
body[data-ch="nm"] { --pch: var(--c-nm); }
body[data-ch="pov"] { --pch: var(--c-pov); }
body[data-ch="ign"] { --pch: var(--c-ign); }

/* 04 — 고정 + 글자 변형 */
.pin.pin-m { height: 260vh; }
.pin.pin-xl { height: 320vh; }
#s04 .pin-inner { align-content: center; gap: clamp(14px, 2.4vh, 28px); }
.morph-stage { display: grid; gap: 6px; justify-items: center; }
.morph-word {
  font-family: var(--f-disp); font-stretch: 125%; font-weight: 800; text-transform: uppercase;
  font-size: clamp(40px, calc(9vw - var(--m, 0) * 3.4vw), 150px); line-height: 0.95; letter-spacing: -0.03em;
  white-space: nowrap; min-height: 1em;
}
.morph-word i { font-style: normal; display: inline-block; transition: color 0.25s; }
.morph-word i.mid { color: var(--ink-2); }
.morph-word i.to { color: var(--c-sp); }
.morph-word i.sp { width: 0.32em; }
#s04 .s04-grid { display: block; width: min(100%, calc((100vh - var(--hdr-h) - 38vh) * 16 / 9)); }

/* 고정 묶음: 상단 머리 고정, 01~05 가 그 밑으로 흐른다 */
.stack-group { position: relative; }
.stack-group.dark { background: var(--ground-dark); }
.group-sticky {
  position: sticky; top: 0; z-index: 5;
  padding: calc(var(--hdr-h) + 10px) var(--gutter) 14px;
  background: var(--ground); border-bottom: 1px solid var(--line);
  display: grid; gap: 10px; justify-items: center; text-align: center;
}
.stack-group.dark .group-sticky { background: var(--ground-dark); }
.group-title { font-family: var(--f-disp); font-stretch: 125%; font-weight: 800; font-size: clamp(28px, 3.6vw, 54px); line-height: 0.95; letter-spacing: -0.02em; color: var(--ch); }
.group-steps { display: flex; justify-content: center; width: min(100%, 860px); border-top: 1px solid var(--line); }
.group-steps li { flex: 1 1 0; }
.group-steps a { display: flex; justify-content: center; gap: 8px; padding: 9px 6px 2px; color: var(--ink-2); position: relative; transition: color 0.3s; }
.group-steps a::before { content: ""; position: absolute; left: 6px; right: 6px; top: -1px; height: 2px; background: transparent; transition: background-color 0.3s; }
.group-steps b { font-weight: 500; opacity: 0.6; }
.group-steps .done a { color: var(--ink); }
.group-steps .done a::before { background: rgba(237, 237, 234, 0.35); }
.group-steps .on a { color: var(--ch); }
.group-steps .on a::before { background: var(--ch); }
/* 묶음 안에서는 섹션별 큰 제목 대신 고정 머리가 제목 역할 */
.stack-group .sec > .sec-title, .stack-group .pin-inner > .sec-title { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.stack-group .sec { padding-top: clamp(48px, 7vh, 80px); }
.stack-group .pin-inner { top: var(--gs-h, 0px); min-height: calc(100vh - var(--gs-h, 0px)); padding-top: 18px; }
.stack-group .rv-sticky, .stack-group .rail-sticky { top: calc(var(--gs-h, 0px) + 12px); }
.stack-group .rv-frame { width: min(100%, calc((100vh - var(--gs-h, 0px) - 110px) * var(--ar))); }
.stack-group .g-reveal .g-cap { width: min(100%, calc((100vh - var(--gs-h, 0px) - 110px) * var(--ar))); }
.stack-group .rail-item { width: min(68vw, calc((100vh - var(--gs-h, 0px) - 150px) * var(--ar))); }
.stack-group .drum-stage { max-width: min(100%, calc((100vh - var(--gs-h, 0px) - 60px) * var(--sar, 1.2))); }
.nm-steps { display: none; }

/* 10 — 가운데에서 시작하는 벤, 겹친 가운데 안에 Casted Media */
.media-map { position: relative; display: block; width: min(100%, calc(100vh - var(--gs-h, 0px) - 220px), 680px); margin-inline: auto; max-width: 100%; }
.media-map .venn { display: block; width: 100%; height: auto; overflow: visible; }
.venn .ring { stroke: var(--ink); opacity: calc(0.45 + 0.55 * var(--e1, 1)); }
.venn .overlap circle { fill: var(--c-nm); opacity: calc(0.25 + 0.75 * var(--e2, 1)); }
.venn text { opacity: var(--e1, 1); font-size: 14px; }
.map-link { display: none; }
.casted {
  position: absolute; left: 50%; top: calc((215 + 40) / 510 * 100%);
  transform: translate(-50%, -50%) scale(calc(0.82 + 0.18 * var(--e2, 1)));
  background: none; padding: 0; text-align: center; color: #0a0a0b;
  opacity: var(--e2, 1); width: 40%; display: grid; gap: 6px; justify-items: center; pointer-events: none;
}
.casted-title { font-size: clamp(20px, 2.4vw, 34px); color: #0a0a0b; }
.casted-body { font-size: clamp(12px, 1.1vw, 15px); font-weight: 600; line-height: 1.45; }

/* 11 — 단계가 하나씩 */
#s11 .pin-inner { align-content: center; }
#s11 .flow li, #s11 .loop { opacity: 0.08; transform: translateY(26px); transition: opacity 0.6s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
#s11 .flow li.show, #s11 .loop.show { opacity: 1; transform: none; }
#s11 .who.ai { background: var(--c-nm); border-color: var(--c-nm); color: #0a0a0b; }
#s11 .loop { border-color: var(--c-nm); }
#s11 .loop-out em { color: var(--c-nm); }

@media (max-width: 900px) {
  .pin.pin-m, .pin.pin-xl { height: auto; }
  #s04 .s04-grid { width: 100%; }
  .group-steps a { font-size: 10px; gap: 4px; }
  .group-steps b { display: none; }
  .media-map { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .pin.pin-m, .pin.pin-xl { height: auto; }
  #s11 .flow li, #s11 .loop { opacity: 1; transform: none; }
}
@media (max-width: 900px) { .stack-group .pin-inner { top: 0; } }
@media (max-width: 900px) {
  .morph-word { font-size: clamp(22px, 7.6vw, 64px); letter-spacing: -0.04em; }
  #s04 .s04-grid { overflow: hidden; }
}

/* ═════════════ 2026-09-17 v4 ═════════════ */
/* 04 · 07 가운데 */
#s04 .s04-grid { margin-inline: auto; }
#s04 .slot, #s07 .slot { justify-items: center; margin-inline: auto; }
#s04 .g-frame { width: 100%; margin-inline: auto; }
#s04 .g-cap, #s07 .g-cap { width: 100%; }
#s07 .drum-stage { margin-inline: auto; }
#s07 .slot.wide { width: min(100%, 1280px); }

/* 09 — 휴대폰이 시간차로 하나씩 */
.feeds.rv { opacity: 1; transform: none; }
.feeds figure > img { opacity: 0; transform: translateY(48px) scale(0.96); transition: opacity 0.8s cubic-bezier(0.2, 0.7, 0.2, 1), transform 1s cubic-bezier(0.2, 0.7, 0.2, 1); transition-delay: calc(var(--i, 0) * 0.28s); }
.feeds figure > figcaption { opacity: 0; transition: opacity 0.6s; transition-delay: calc(var(--i, 0) * 0.28s + 0.3s); }
.feeds.in figure > img, .feeds:not(.rv) figure > img { opacity: 1; transform: none; }
.feeds.in figure > figcaption, .feeds:not(.rv) figure > figcaption { opacity: 1; }

/* 11 — 하단 박스 가운데 */
#s11 .loop { justify-content: center; justify-items: center; text-align: center; grid-template-columns: auto auto minmax(0, auto); }
#s11 .loop-steps { justify-content: center; }
#s11 .loop-steps div { justify-items: center; }
#s11 .loop-out { text-align: center; }
@media (max-width: 900px) { #s11 .loop { grid-template-columns: minmax(0, 1fr); } #s11 .loop-arrow { transform: rotate(90deg); } }
@media (prefers-reduced-motion: reduce) { .feeds figure > img, .feeds figure > figcaption { opacity: 1; transform: none; } }

/* v6 — 13장 두 영상 나란히 */
.duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(12px, 1.6vw, 24px); width: 100%; }
.duo-item { display: grid; gap: 8px; justify-items: center; }
.duo-item .g-frame { width: 100%; }
.duo-label { color: var(--ch, var(--ink-2)); }
@media (max-width: 700px) { .duo { grid-template-columns: minmax(0, 1fr); } }

/* ───── v7 (0917) ───── */
/* 10 — 스크롤을 더 주어 Casted Media 가 머문다 */
@media (min-width: 901px) { .pin.pin-l { height: 380vh; } }
/* 08 — 휴대폰 없이 이미지 6장만, 가운데 */
.s08-grid { grid-template-columns: minmax(0, 1fr); max-width: 1180px; margin-inline: auto; }
/* 09 — 휴대폰 간격 좁게 · 스크롤에 맞춰 한 대씩 */
.feeds { gap: clamp(6px, 0.8vw, 12px); max-width: 1120px; margin-inline: auto; }
.feeds figure:nth-child(even) { transform: translateY(clamp(10px, 2.4vw, 36px)); }
.feeds figure > img, .feeds.in figure > img, .feeds:not(.rv) figure > img { opacity: 0; transform: translateY(56px) scale(0.94); transition-delay: 0s; }
.feeds figure > figcaption, .feeds.in figure > figcaption, .feeds:not(.rv) figure > figcaption { opacity: 0; transition-delay: 0.2s; }
.feeds figure.on > img { opacity: 1; transform: none; }
.feeds figure.on > figcaption { opacity: 1; }
/* 13 — 크루 4인 영상 한 편을 크게 가운데 */
.g-single { display: grid; gap: 10px; justify-items: center; }
.single-frame { width: min(100%, calc((100vh - var(--gs-h, 0px) - 120px) * var(--ar))); margin-inline: auto; }
.g-single .g-cap { width: min(100%, calc((100vh - var(--gs-h, 0px) - 120px) * var(--ar))); margin-inline: auto; }
#s13 .slot { margin-inline: auto; }
/* 14 — 트레일러 가운데 · 버튼 두 개 */
#s14 .slot { margin-inline: auto; }
.g-reveal .rv-sticky { width: 100%; justify-items: center; }
.g-reveal .rv-frame, .g-reveal .g-cap, .stack-group .g-reveal .rv-frame, .stack-group .g-reveal .g-cap { margin-inline: auto; }
.s14-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.s14-actions .film-play { text-decoration: none; }
/* 15 — POV 유튜브 카드 */
.g-yt .rail-item { width: min(58vw, calc((100vh - var(--gs-h, 0px) - 230px) * var(--ar))); color: inherit; text-decoration: none; }
.yt-thumb { position: relative; overflow: hidden; background: #111 center / cover no-repeat; }
.yt-thumb::before { content: ""; position: absolute; inset: 0; background: rgba(0, 0, 0, 0.45); }
.yt-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.yt-card:hover .yt-thumb img, .yt-card:focus-visible .yt-thumb img { transform: scale(1.04); }
.yt-ep { position: absolute; left: 14px; top: 12px; color: #fff; background: var(--ch, #41f729); color: #0a0a0b; padding: 2px 8px; }
.yt-dur { position: absolute; right: 12px; bottom: 10px; color: #fff; background: rgba(0, 0, 0, 0.7); padding: 1px 6px; }
.yt-play { position: absolute; left: 50%; top: 50%; width: 64px; height: 64px; margin: -32px 0 0 -32px; border-radius: 50%; background: rgba(0, 0, 0, 0.55); border: 1px solid rgba(255, 255, 255, 0.7); }
.yt-play::after { content: ""; position: absolute; left: 26px; top: 21px; border: 11px solid transparent; border-left: 17px solid #fff; border-right: 0; }
.yt-card:hover .yt-play { background: var(--ch, #41f729); }
.yt-title { font-size: clamp(14px, 1.2vw, 17px); font-weight: 600; line-height: 1.4; }
@media (max-width: 700px) {
  .g-yt .rail-item { width: 78vw; }
  .feeds figure:nth-child(even) { transform: none; }
}
@media (prefers-reduced-motion: reduce) { .feeds figure > img, .feeds figure > figcaption { opacity: 1 !important; transform: none !important; } }
@media (prefers-reduced-motion: reduce) { .pin.pin-l { height: auto; } }

/* v7 — 영문 디스플레이 폰트 Bebas Neue (상은님 0917) · 단일 굵기라 합성 굵기·자간 조임을 끈다 */
:root { --f-disp: "Bebas Neue", "Arial Narrow", "Helvetica Neue", sans-serif; }
.sec-title, .giant, .group-title, .stats b, .casted-title, .morph-stage { letter-spacing: 0.01em; font-synthesis: none; }
@media (min-width: 901px) and (prefers-reduced-motion: no-preference) { .pin.pin-f { height: 240vh; } }
#s09 .pin-inner { align-content: center; }
.feeds figure > img { transition-duration: 0.5s, 0.6s; }

/* ───── v8 (0917) ───── */
/* 챕터 전환 — 챕터 표지에 더 오래 머물고, 앞 챕터가 끝난 뒤 한 박자 쉬고 나온다 */
@media (min-width: 901px) and (prefers-reduced-motion: no-preference) {
  .chapter.tall { height: 250vh; }
  .chapter.xtall { height: 330vh; }
  .sec.chapter:not(#s03) { margin-top: 35vh; }
}
/* 14 — 트레일러 전체가 잘리지 않고 크게 */
#s14 .slot { width: 100%; }
.single-frame.is-contain { background: #000; }
.single-frame.is-contain .g-media { object-fit: contain; }
#s14 .single-frame { width: min(100%, calc((100vh - var(--gs-h, 0px) - 170px) * var(--ar))); }
/* 15 — 가로 레일: 칸이 카드 전체 폭으로 늘어나지 않게(이동 거리 0 버그) · 카드 3장 폭 · 6장째까지 넘기면 다음 섹션 */
.slot.g-rail { min-width: 0; }
.rail-sticky { min-width: 0; grid-template-columns: minmax(0, 1fr); }
.slot.g-yt { height: calc(5 * 42vh + 100vh); }
.g-yt .rail-item { width: min(30vw, calc((100vh - var(--gs-h, 0px) - 260px) * var(--ar))); }
.yt-slot { position: absolute; inset: 0; z-index: 1; opacity: 0; transition: opacity 0.6s; }
.yt-card.is-live .yt-slot { opacity: 1; }
.yt-slot iframe { position: absolute; inset: -1px; width: calc(100% + 2px); height: calc(100% + 2px); border: 0; pointer-events: none; }
.yt-hit { position: absolute; inset: 0; z-index: 2; }
.yt-ep, .yt-dur { z-index: 3; }
.yt-thumb::before { z-index: 0; }
.yt-title { color: inherit; text-decoration: none; }
.yt-title:hover, .yt-title:focus-visible { text-decoration: underline; }
@media (max-width: 900px) {
  .slot.g-yt { height: auto; }
  .g-yt .rail-item { width: 78vw; }
}
#s14 .g-single .g-cap { width: min(100%, calc((100vh - var(--gs-h, 0px) - 170px) * var(--ar))); }
.yt-blocked .yt-slot { display: none; }
.yt-thumb::after { content: ""; position: absolute; left: 50%; top: 50%; width: 56px; height: 56px; margin: -28px 0 0 -28px; border-radius: 50%; background: rgba(0,0,0,.55) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 56 56'%3E%3Cpath d='M23 18l16 10-16 10z' fill='%23fff'/%3E%3C/svg%3E") center/100% no-repeat; border: 1px solid rgba(255,255,255,.7); z-index: 0; }
.yt-card.is-live .yt-thumb::after { opacity: 0; }
@media (min-width: 901px) { .g-yt .rail-sticky { top: calc(var(--gs-h, 0px) + 12px); min-height: calc(100vh - var(--gs-h, 0px) - 24px); align-content: center; } }

/* ───── v9 (0917) — 다음 섹션으로 넘어가기 전 머무는 구간 (data-hold 와 짝) ───── */
@media (min-width: 901px) and (prefers-reduced-motion: no-preference) {
  #s04.pin.pin-m { height: 340vh; }
  #s06.pin { height: 270vh; }
  #s09.pin.pin-f { height: 320vh; }
  #s10.pin.pin-l { height: 470vh; }
  #s13 .g-reveal { height: calc(var(--n) * 42vh * 1.33 + 100vh); }
  #s07 { padding-bottom: calc(clamp(96px, 14vh, 160px) + 45vh); }
}

/* 0922 — 04 유튜브 무음 자동재생: 16:9 틀을 꽉 채우고, 휠·클릭은 사이트로 통과 */
.g-yt-embed { overflow: hidden; background: #000 url("../assets/vs/vs_19.webp") center / cover no-repeat; }
.g-yt-embed iframe { position: absolute; left: 50%; top: 50%; width: 100%; height: 100%; transform: translate(-50%, -50%) scale(1.02); border: 0; pointer-events: none; }

/* 0922 — 04 섹션: 영상만 크게 가운데 (카피·캡션·머리 막대 없음) */
#s04.s04-film { min-height: 100vh; display: grid; place-items: center; padding-block: calc(var(--hdr-h) + 16px) 24px; overflow: hidden; }
#s04.s04-film .sec-meta, #s04.s04-film .stamp, #s04.s04-film .g-cap { display: none !important; }
#s04.s04-film .s04-grid { width: 100%; max-width: none; margin-inline: auto; }   /* 0928: 여백 안쪽 가로 끝까지 */
#s04.s04-film .slot { width: 100%; }
#s04.s04-film .card-no { display: none !important; }

/* 0922 — 04: 유튜브가 재생되기 전·막혔을 때는 사이트 안 영상이 보인다 */
.g-yt-embed .yt-fallback { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.g-yt-embed iframe { opacity: 0; transition: opacity .6s; }
.g-yt-embed.yt-on iframe { opacity: 1; }

/* 0922 — 04·14 소리 버튼 */
.sound-btn { position: absolute; right: 14px; bottom: 14px; z-index: 30; pointer-events: auto; background: rgba(0,0,0,.55); color: #fff; border: 1px solid rgba(255,255,255,.7); padding: 7px 12px; font-size: 12px; letter-spacing: .08em; cursor: pointer; }
.sound-btn.on { background: var(--ch, #fee336); color: #0a0a0b; border-color: transparent; }
.sound-btn:hover, .sound-btn:focus-visible { background: #fff; color: #0a0a0b; }

/* v11 — 04 영상 테두리 제거 (주변과 경계 없음) */
#s04 .g-stack .card { outline: 0 !important; box-shadow: none !important; background: transparent; }
#s04 .g-frame, #s04 .g-yt-embed { background-color: transparent; box-shadow: none; border: 0; outline: 0; }
#s04 .g-yt-embed { background-image: none; }
/* 04 영상 가장자리를 배경으로 자연스럽게 흐리기 */
#s04 .g-yt-embed, #s04 .g-stack .card {
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 16%, #000 84%, transparent 100%), linear-gradient(to bottom, transparent 0, #000 18%, #000 82%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0, #000 16%, #000 84%, transparent 100%), linear-gradient(to bottom, transparent 0, #000 18%, #000 82%, transparent 100%);
  mask-composite: intersect;
}
/* v12 — 07 브랜드 필름: 원통 대신 영상 한 편을 바로 재생 */
@media (min-width: 901px) and (prefers-reduced-motion: no-preference) { #s07 { padding-bottom: clamp(96px, 14vh, 160px); } }
#s07 .single-frame { width: 100%; background: #000; }
#s07 .single-frame .g-media { width: 100%; height: 100%; object-fit: cover; display: block; }
#s07 .slot.wide { width: min(100%, 1280px, calc((100vh - 330px) * 16 / 9)); margin-inline: auto; }