/* SpaceSJ — Industry 디자인 시스템 위에 올리는 사이트 레이어.
   색·타입·간격·라디우스·그림자는 전부 ds.css의 토큰에서만 가져옵니다.
   (하드코딩된 hex·폰트명·px 스케일 금지 — readme.md "How to use this") */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');

:root {
  /* 한글 본문을 위한 폴백만 덧붙입니다. 조판 규칙(콘덴스드 제목 + 본문)은 그대로. */
  --font-heading: "Barlow Condensed", "Pretendard Variable", Pretendard, system-ui, sans-serif;
  --font-body: "Barlow", "Pretendard Variable", Pretendard, system-ui, sans-serif;
  --shell: 1280px;
  --gutter: 32px;
  --ink-line: color-mix(in srgb, #fff 16%, transparent);
}

body {
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
  /* 한글은 어절 단위로 끊습니다 — keep-all 이 없으면 "확인할 7가 / 지" 처럼
     낱자에서 잘립니다. 끊을 수 없는 긴 토큰(품번·URL)만 강제 줄바꿈. */
  word-break: keep-all;
  overflow-wrap: break-word;
}
h1, h2, h3, h4, h5, h6 { letter-spacing: -0.022em; }
h1 { letter-spacing: -0.032em; }
a:hover { color: var(--color-accent-700); }
::selection { background: var(--color-accent-200); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--color-accent); color: var(--color-bg);
  padding: var(--space-2) var(--space-4); font-family: var(--font-heading);
}
.skip:focus { left: 0; }

/* ── 레이아웃 ─────────────────────────────────────────────────────── */
.wrap { max-width: var(--shell); margin: 0 auto; padding-inline: var(--gutter); }
.sec { border-bottom: 1px solid var(--color-divider); }
.sec > .wrap { padding-block: 80px; }
.sec--tight > .wrap { padding-block: 56px; }
.sec--tint { background: var(--color-neutral-100); }
.sec--ink { background: var(--color-accent-900); color: var(--color-neutral-100); border-bottom: 0; }
.sec--ink h1, .sec--ink h2, .sec--ink h3 { color: var(--color-neutral-100); }
.sec--ink a { color: var(--color-neutral-100); }
.sec--flush > .wrap { padding-block: 0; }

.kicker {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-accent-700); margin-bottom: var(--space-2);
}
.sec--ink .kicker { color: color-mix(in srgb, #fff 82%, transparent); }
.crumb {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-neutral-700); margin-bottom: var(--space-8);
}
.crumb a { color: inherit; }
.lede { font-size: 16.5px; line-height: 1.75; color: var(--color-neutral-700); max-width: 68ch; }
.note { font-size: 12px; line-height: 1.7; color: var(--color-neutral-700); }
.figcap { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-neutral-700); }
.rule-mark { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-8); }
.rule-mark i { width: 28px; height: 1px; background: var(--color-accent); display: block; }
.rule-mark span { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-accent-700); }

.sec-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--space-8); margin-bottom: 40px;
}
.sec-head h2 { font-size: 38px; margin: 0; }

.grid { display: grid; gap: var(--space-8); }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-5 { grid-template-columns: repeat(5, 1fr); gap: 16px; }
.g-4 { grid-template-columns: repeat(4, 1fr); gap: 16px; }
.g-half { grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.g-split { grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: end; }
.g-aside { grid-template-columns: 1.2fr 0.8fr; gap: 56px; align-items: start; }
.g-panel { grid-template-columns: 300px 1fr; gap: 56px; align-items: start; }
.g-arch { grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.g-wide { grid-template-columns: 1.3fr 0.7fr; gap: 32px; align-items: start; }
.g-demo { grid-template-columns: 0.9fr 1.1fr; gap: 32px; align-items: start; }
.g-form { grid-template-columns: 1fr 0.72fr; gap: 64px; align-items: start; }
.g-cta { grid-template-columns: 1fr auto; gap: 40px; align-items: center; }

/* ── 헤더 ─────────────────────────────────────────────────────────── */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-divider);
}
.site-head > .wrap {
  display: flex; align-items: center; gap: 28px; height: 62px; padding-block: 0;
}
.brand {
  display: flex; align-items: baseline; gap: var(--space-2);
  text-decoration: none; color: inherit; margin-right: auto;
}
.brand b {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 21px; letter-spacing: 0.02em;
}
.brand b i { color: var(--color-accent-700); font-style: normal; }
.brand span {
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-neutral-700);
}
.mainnav { display: flex; align-items: center; gap: 20px; font-size: 14px; }
.mainnav a { color: inherit; text-decoration: none; }
.mainnav a:hover { color: var(--color-accent-700); }
.mainnav a[aria-current="page"] { color: var(--color-accent-700); font-weight: 500; }
.head-end {
  display: flex; align-items: center; gap: var(--space-4);
  padding-left: var(--space-6); border-left: 1px solid var(--color-divider);
}
.lang { display: flex; align-items: center; gap: var(--space-1); font-size: 11px; letter-spacing: 0.06em; }
.lang a { color: inherit; text-decoration: none; }
.lang a[aria-current] { color: var(--color-accent-700); font-weight: 700; }
.lang em { color: var(--color-neutral-400); font-style: normal; }
.navtoggle { display: none; }

/* ── 히어로 ───────────────────────────────────────────────────────── */
.hero > .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; padding-block: 0; }
.hero-copy { padding: 96px 48px 88px 0; border-right: 1px solid var(--color-divider); }
.hero-copy h1 { font-size: clamp(36px, 3.4vw, 54px); line-height: 1.06; margin: 0 0 var(--space-6); }
.hero-copy h1 em { color: var(--color-accent-700); font-style: normal; }
.hero-copy p { font-size: 17px; line-height: 1.65; max-width: 62ch; color: var(--color-neutral-700); margin-bottom: 32px; }
.hero-fig { padding: 40px 0 40px 48px; display: flex; flex-direction: column; justify-content: center; }
.hero-fig .figcap { margin-bottom: var(--space-4); }
.frame { position: relative; }
.frame img { width: 100%; height: 100%; object-fit: cover; }
.frame--43 { aspect-ratio: 4 / 3; }
.frame--218 { aspect-ratio: 21 / 8; }
.frame--1610 { aspect-ratio: 16 / 10; }
.hatch {
  background:
    repeating-linear-gradient(135deg, var(--color-neutral-200) 0 2px, transparent 2px 9px),
    var(--color-neutral-100);
  display: grid; place-items: center;
}
.hatch span {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-accent-700);
}
.btn-row { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.btn-lg { padding: 12px 20px; font-size: 15px; }

/* ── Proof bar ────────────────────────────────────────────────────── */
.proof { display: grid; grid-template-columns: repeat(4, 1fr); border-left: 1px solid var(--ink-line); }
.proof > div { padding: 32px 24px; border-right: 1px solid var(--ink-line); }
.proof b { font-family: var(--font-heading); font-size: 46px; line-height: 1; font-weight: var(--font-heading-weight); display: block; }
.proof b i { font-size: 20px; opacity: 0.82; font-style: normal; }
.proof span { font-size: 13px; margin-top: var(--space-2); display: block; opacity: 0.86; }
.proof-note { padding: 12px 24px 24px; font-size: 11px; opacity: 0.72; }

/* ── 카드 ─────────────────────────────────────────────────────────── */
a.card { text-decoration: none; color: inherit; }
a.card:hover { background: color-mix(in srgb, var(--color-accent) 6%, transparent); }
.card-sol { padding: 20px 16px; min-height: 236px; gap: var(--space-2); }
.card-sol .num { font-family: var(--font-heading); font-size: 12px; letter-spacing: 0.1em; color: var(--color-accent-700); }
.card-sol .row { display: flex; align-items: center; justify-content: space-between; }
.card-sol .ico { color: var(--color-accent-700); font-size: 17px; }
.card-sol .en { font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-neutral-700); }
.card-sol .more { font-size: 12px; color: var(--color-accent-700); }
.card-case { padding: 0; gap: 0; }
.card-case .body { padding: 20px; display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.card-case .tags { display: flex; gap: var(--space-1); flex-wrap: wrap; }
.metric {
  border-top: 1px solid var(--color-divider); padding-top: var(--space-4);
  display: flex; align-items: baseline; gap: var(--space-2); margin-top: auto;
}
.metric b { font-family: var(--font-heading); font-size: 26px; color: var(--color-accent-700); font-weight: var(--font-heading-weight); }
.metric span { font-size: 12px; color: var(--color-neutral-700); }
.panel { padding: var(--space-6) 20px; }
.panel--accent { background: color-mix(in srgb, var(--color-accent) 7%, transparent); }
.panel--paper { background: var(--color-bg); }
.panel h3 { font-size: 19px; margin: var(--space-2) 0 var(--space-1); }
.panel p { font-size: 14.5px; line-height: 1.7; color: var(--color-neutral-700); margin: 0; }

/* ── 아키텍처 다이어그램 ─────────────────────────────────────────── */
.arch-layer { padding: 20px 0; border-top: 1px solid var(--color-divider); }
.arch-layer > .lbl { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-4); }
.arch-layer > .lbl span { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-neutral-700); }
.arch-layer > .lbl i { flex: 1; height: 1px; background: var(--color-divider); }
.arch-nodes { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.arch-node {
  display: flex; flex-direction: column; align-items: flex-start; text-align: left;
  flex: 1 1 210px; min-width: 190px; padding: 13px 14px;
  cursor: pointer; font: inherit; background: transparent; color: var(--color-text);
  border: 1px solid var(--color-divider);
}
.arch-node b { font-size: 13px; font-weight: 500; }
.arch-node span { font-size: 11px; opacity: 0.62; margin-top: var(--space-1); }
.arch-node:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.arch-node[aria-pressed="true"] {
  background: var(--color-accent); color: var(--color-bg); border-color: var(--color-accent);
}
.arch-node[aria-pressed="true"] > .corner { color: color-mix(in srgb, var(--color-bg) 70%, transparent); }
.arch-out { padding: 20px; }
.arch-out .t { font-family: var(--font-heading); font-size: 19px; font-weight: var(--font-heading-weight); }
.arch-out p { font-size: 15px; line-height: 1.7; margin: var(--space-2) 0 0; color: var(--color-neutral-700); }
.arch-foot { border-top: 1px solid var(--color-divider); padding-top: var(--space-4); font-size: 11px; color: var(--color-neutral-700); }

/* ── 리스트형 행 (솔루션·인사이트 목록) ──────────────────────────── */
.row-link {
  display: grid; gap: 32px; align-items: center; padding: 28px var(--space-2);
  border-bottom: 1px solid var(--color-divider); text-decoration: none; color: inherit;
}
.row-link:hover { background: color-mix(in srgb, var(--color-accent) 5%, transparent); }
.row-sol { grid-template-columns: 120px 1.1fr 1.4fr auto; }
.row-sol .h { font-family: var(--font-heading); font-size: 26px; line-height: 1.15; font-weight: var(--font-heading-weight); }
.row-sol .en { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-neutral-700); margin-top: var(--space-1); }
.row-sol p { font-size: 15.5px; line-height: 1.65; color: var(--color-neutral-700); margin: 0; }
.row-art { grid-template-columns: 150px 1fr 200px; align-items: start; }
.row-art h2 { font-size: 26px; line-height: 1.22; margin: 0 0 var(--space-2); }
.row-art p { font-size: 15.5px; line-height: 1.7; color: var(--color-neutral-700); margin: 0; max-width: 72ch; }
.row-art .meta-k { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent-700); }
.row-art .meta-d { font-size: 12px; color: var(--color-neutral-700); margin-top: var(--space-1); }
.row-art .tagline { font-size: 12px; color: var(--color-neutral-700); text-align: right; }

/* ── 필터 바 ──────────────────────────────────────────────────────── */
.filterbar {
  position: sticky; top: 62px; z-index: 20;
  background: color-mix(in srgb, var(--color-bg) 94%, transparent);
  backdrop-filter: blur(6px); border-bottom: 1px solid var(--color-divider);
}
.filterbar > .wrap { padding-block: var(--space-4); display: flex; flex-wrap: wrap; gap: var(--space-6); align-items: center; }
.filterset { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.filterset > b { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-neutral-700); font-weight: 400; margin-right: var(--space-1); }
.chip {
  padding: 6px 12px; font: inherit; font-size: 12px; cursor: pointer;
  border: 1px solid var(--color-divider); background: transparent; color: var(--color-text);
}
.chip:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.chip[aria-pressed="true"] { background: var(--color-accent); color: var(--color-bg); border-color: var(--color-accent); }
.filter-count { margin-left: auto; font-size: 12px; color: var(--color-neutral-700); }

/* ── 번호 스텝 / 스펙 시트 ───────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); border-left: 1px solid var(--color-divider); border-top: 1px solid var(--color-divider); }
.steps > div { padding: 24px; border-right: 1px solid var(--color-divider); border-bottom: 1px solid var(--color-divider); }
.steps .n { font-family: var(--font-heading); font-size: 30px; color: var(--color-accent-300); line-height: 1; font-weight: var(--font-heading-weight); }
.steps h3 { font-size: 20px; margin: var(--space-2) 0; }
.steps p { font-size: 14.5px; line-height: 1.7; margin: 0 0 var(--space-2); color: var(--color-neutral-700); }
.steps .m { font-size: 11.5px; color: var(--color-accent-700); }

.numlist { display: flex; flex-direction: column; }
.numlist > li {
  display: grid; grid-template-columns: 34px 1fr; gap: var(--space-4);
  padding: var(--space-4) 0; border-top: 1px solid var(--color-divider); list-style: none;
}
.numlist > li:last-child { border-bottom: 1px solid var(--color-divider); }
.numlist .n { font-family: var(--font-heading); color: var(--color-accent-700); font-weight: var(--font-heading-weight); }
.numlist b { font-weight: 500; display: block; }
.numlist span { font-size: 13.5px; line-height: 1.65; color: var(--color-neutral-700); }
.numlist { margin: 0; padding: 0; }

.timeline { display: grid; grid-template-columns: 150px 1fr; }
.timeline > * { padding: var(--space-4) 0; border-top: 1px solid var(--color-divider); }
.timeline > *:nth-last-child(-n+2) { border-bottom: 1px solid var(--color-divider); }
.timeline .d { font-family: var(--font-heading); font-size: 15px; color: var(--color-accent-700); font-weight: var(--font-heading-weight); }
.timeline .t { font-family: var(--font-heading); font-size: 19px; font-weight: var(--font-heading-weight); }
.timeline .b { font-size: 15px; line-height: 1.7; color: var(--color-neutral-700); }

.wall { display: grid; grid-template-columns: repeat(6, 1fr); border: 1px solid var(--color-divider); border-right: 0; border-bottom: 0; }
.wall > div {
  border-right: 1px solid var(--color-divider); border-bottom: 1px solid var(--color-divider);
  height: 86px; display: grid; place-items: center;
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-neutral-700);
}

/* ── 기사 본문 ────────────────────────────────────────────────────── */
.prose { max-width: 860px; margin: 0 auto; }
.prose h2 { font-size: 26px; line-height: 1.25; margin: 40px 0 var(--space-4); }
.prose h2:first-child { margin-top: 0; }
.prose p { font-size: 17px; line-height: 1.85; color: var(--color-neutral-800); }
.prose--legal h2 { font-size: 22px; margin: 32px 0 var(--space-2); }
.prose--legal p { font-size: 16.5px; line-height: 1.85; color: var(--color-neutral-700); }

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq { border-top: 1px solid var(--color-divider); }
.faq details { border-bottom: 1px solid var(--color-divider); }
.faq summary {
  display: flex; gap: var(--space-4); align-items: baseline; cursor: pointer;
  padding: var(--space-6) 0; font-family: var(--font-heading);
  font-weight: var(--font-heading-weight); font-size: 19px; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; margin-left: auto; color: var(--color-accent-700); font-size: 20px; }
.faq details[open] summary::after { content: "–"; }
.faq summary:hover { color: var(--color-accent-700); }
.faq .a { padding: 0 40px var(--space-6) 0; font-size: 16px; line-height: 1.8; color: var(--color-neutral-700); margin: 0; }

/* ── 표 · 태그 보조 ──────────────────────────────────────────────── */
.table th[scope="row"] { width: 26%; }
.table td.num, .table th.num { text-align: right; }
.taglist { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.kv { display: flex; flex-direction: column; font-size: 14px; }
.kv > div { display: flex; gap: var(--space-4); padding: var(--space-2) 0; border-bottom: 1px solid var(--color-divider); }
.kv dt { width: 92px; color: var(--color-neutral-700); font-size: 12px; flex: none; }
.kv dd { margin: 0; }

.ba { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-left: 1px solid var(--ink-line); }
.ba > div { padding: 20px 24px; border-right: 1px solid var(--ink-line); }
.ba .m { font-size: 12px; opacity: 0.8; }
.ba .b { font-size: 15px; opacity: 0.6; text-decoration: line-through; margin-top: var(--space-2); }
.ba .a { font-family: var(--font-heading); font-size: 30px; font-weight: var(--font-heading-weight); line-height: 1.1; }

blockquote.pull {
  margin: 0; font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 28px; line-height: 1.35; max-width: 24em;
}
blockquote.pull + .by { font-size: 13px; color: var(--color-neutral-700); margin-top: var(--space-4); }

/* ── Living Demo ─────────────────────────────────────────────────── */
.demo-head { display: flex; align-items: baseline; gap: var(--space-6); margin-bottom: var(--space-2); flex-wrap: wrap; }
.demo-head .kicker { margin: 0; }
.demo-head h2 { font-size: 32px; margin: 0; }
.wf-list { display: flex; flex-direction: column; gap: var(--space-2); }
.wf-step {
  display: grid; grid-template-columns: 34px 1fr auto; gap: var(--space-4); align-items: center;
  text-align: left; font: inherit; cursor: pointer; padding: 14px 16px;
  border: 1px solid var(--color-divider); background: transparent; color: var(--color-text);
}
.wf-step:hover { background: color-mix(in srgb, var(--color-accent) 8%, transparent); }
.wf-step[aria-pressed="true"] { border-color: var(--color-accent); background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.wf-step .n { font-family: var(--font-heading); font-size: 13px; color: var(--color-accent-700); }
.wf-step .t { font-family: var(--font-heading); font-size: 17px; display: block; font-weight: var(--font-heading-weight); }
.wf-step .d { font-size: 12.5px; line-height: 1.55; color: var(--color-neutral-700); }
.wf-step .io { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-neutral-700); }
.hs-out { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-6); }
.hs-out > div { padding: 16px; }
.hs-out .l { font-size: 11px; color: var(--color-neutral-700); }
.hs-out .v { font-family: var(--font-heading); font-size: 21px; margin-top: var(--space-1); font-weight: var(--font-heading-weight); }
.sandbox-kpi { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--color-divider); }
.sandbox-kpi > div { padding: 16px; border-right: 1px solid var(--color-divider); }
.sandbox-kpi > div:last-child { border-right: 0; }
.sandbox-kpi .l { font-size: 11px; color: var(--color-neutral-700); }
.sandbox-kpi .v { font-family: var(--font-heading); font-size: 26px; font-weight: var(--font-heading-weight); }
.sandbox-head { display: flex; align-items: center; gap: var(--space-4); padding: 12px 16px; border-bottom: 1px solid var(--color-divider); }
.sandbox-head .t { font-family: var(--font-heading); font-size: 15px; font-weight: var(--font-heading-weight); }
.sandbox-head .ts { margin-left: auto; font-size: 12px; color: var(--color-neutral-700); }

pre.code {
  margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px; line-height: 1.85; white-space: pre-wrap;
  color: var(--color-neutral-900);
}

/* ── 폼 ───────────────────────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
.field + .field, .field-block { margin-top: var(--space-6); }
.consents { display: flex; flex-direction: column; gap: var(--space-4); margin-top: var(--space-6); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.consent { display: flex; gap: var(--space-2); align-items: flex-start; font-size: 14.5px; line-height: 1.6; cursor: pointer; }
.consent input { margin-top: 4px; accent-color: var(--color-accent); }
.formmsg { font-size: 13px; color: var(--color-accent-700); min-height: 20px; margin-top: var(--space-2); }
.field select.input { appearance: none; background-image: none; }

/* ── 푸터 ─────────────────────────────────────────────────────────── */
.site-foot { background: var(--color-neutral-900); color: color-mix(in srgb, #fff 78%, transparent); }
.site-foot > .wrap { padding: 56px var(--gutter) 32px; }
.foot-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 32px; border-bottom: 1px solid color-mix(in srgb, #fff 14%, transparent);
}
.foot-top b.mark { font-family: var(--font-heading); font-size: 20px; color: #fff; letter-spacing: 0.02em; }
.foot-top b.mark i { color: var(--color-accent-400); font-style: normal; }
.foot-top p { font-size: 14.5px; line-height: 1.7; margin: var(--space-4) 0 0; max-width: 52ch; }
.foot-col { display: flex; flex-direction: column; gap: var(--space-2); font-size: 13px; }
.foot-col > b {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 400;
  color: color-mix(in srgb, #fff 66%, transparent); margin-bottom: var(--space-1);
}
.foot-col a { color: inherit; text-decoration: none; }
.foot-col a:hover { color: #fff; }
.foot-col a.strong { color: #fff; font-weight: 700; }
.foot-legal { padding-top: var(--space-6); display: grid; grid-template-columns: 1fr auto; gap: var(--space-6); align-items: end; }
.foot-legal p { font-size: 12px; line-height: 1.9; color: color-mix(in srgb, #fff 76%, transparent); margin: 0; }
.foot-legal span { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: color-mix(in srgb, #fff 66%, transparent); }

/* ── 챗봇 위젯 (Living Demo D1) ──────────────────────────────────── */
.chat-dock {
  position: fixed; right: 24px; bottom: 24px; z-index: 60;
  display: flex; flex-direction: column; align-items: flex-end; gap: var(--space-4);
}
.chat-panel {
  width: 372px; height: 508px; background: var(--color-bg);
  display: flex; flex-direction: column; animation: ssj-in 0.18s ease-out;
}
.chat-panel[hidden] { display: none; }
.chat-head { padding: 12px 16px; border-bottom: 1px solid var(--color-divider); display: flex; align-items: center; gap: var(--space-2); }
.chat-head .t { font-family: var(--font-heading); font-size: 15px; font-weight: var(--font-heading-weight); }
.chat-head .s { font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-neutral-700); }
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); animation: ssj-pulse 2s infinite; flex: none; }
.chat-log { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: var(--space-4); }
.chat-msg { max-width: 86%; align-self: flex-start; }
.chat-msg.me { align-self: flex-end; }
.chat-msg .bubble {
  padding: 10px 12px; font-size: 13px; line-height: 1.6;
  border: 1px solid var(--color-divider); background: var(--color-neutral-100);
}
.chat-msg.me .bubble { background: var(--color-accent); color: var(--color-bg); }
.chat-msg .src { font-size: 10px; letter-spacing: 0.06em; color: var(--color-neutral-700); margin-top: var(--space-1); }
.chat-chips { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-top: var(--space-1); }
.chat-chips .btn { font-size: 11px; padding: 4px 8px; }
.chat-form { padding: 12px; border-top: 1px solid var(--color-divider); display: flex; gap: var(--space-2); }
.chat-toggle { height: 48px; padding: 0 20px; font-size: 14px; gap: var(--space-2); }
.chat-toggle .pulse { background: var(--color-neutral-100); }

@keyframes ssj-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes ssj-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@keyframes ssj-plate { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.plate > * { animation: ssj-plate 320ms cubic-bezier(0.16, 0.84, 0.44, 1) both; }
.plate > *:nth-child(1) { animation-delay: 0ms; }
.plate > *:nth-child(2) { animation-delay: 70ms; }
.plate > *:nth-child(3) { animation-delay: 140ms; }
.plate > *:nth-child(4) { animation-delay: 210ms; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ── 반응형 — 모듈러 그리드가 한 열로 접힙니다 ──────────────────── */
@media (max-width: 1080px) {
  .g-5 { grid-template-columns: repeat(3, 1fr); }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .wall { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  :root { --gutter: 20px; }
  .site-head > .wrap { flex-wrap: wrap; height: auto; gap: var(--space-3); padding-block: var(--space-3); }
  .mainnav {
    order: 3; width: 100%; overflow-x: auto; gap: var(--space-6);
    padding-bottom: var(--space-1); -webkit-overflow-scrolling: touch;
  }
  .mainnav a { white-space: nowrap; }
  .head-end { padding-left: 0; border-left: 0; }
  .sec > .wrap { padding-block: 56px; }
  .hero > .wrap { grid-template-columns: 1fr; }
  .hero-copy { padding: 48px 0 32px; border-right: 0; }
  .hero-fig { padding: 0 0 48px; }
  .g-2, .g-3, .g-4, .g-5, .g-half, .g-split, .g-aside, .g-panel, .g-arch,
  .g-wide, .g-demo, .g-form, .g-cta, .form-grid,
  .hs-out, .sandbox-kpi, .foot-top, .foot-legal { grid-template-columns: 1fr; gap: 32px; }
  .g-cta { justify-items: start; }
  .proof, .ba { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
  .sec-head h2 { font-size: 27px; }
  .row-sol, .row-art { grid-template-columns: 1fr; gap: var(--space-4); }
  .row-art .tagline { text-align: left; }
  .timeline { grid-template-columns: 1fr; }
  .timeline > *:not(.d) { padding-top: 0; border-top: 0; }
  .timeline > *:nth-last-child(-n+2) { border-bottom: 0; }
  .timeline > .d { border-bottom: 0; }
  .filterbar { position: static; }
  .wf-step { grid-template-columns: 28px 1fr; }
  .wf-step .io { grid-column: 2; }
  h1 { font-size: 32px !important; }
  .prose h2 { font-size: 22px; }
  /* 패널만 화면 폭을 쓰고, 토글 버튼은 우측 하단에 그대로 둡니다. */
  .chat-dock { right: 16px; bottom: 16px; left: 16px; align-items: flex-end; }
  .chat-panel { width: 100%; height: 66vh; }
  .foot-legal { align-items: start; }
}
@media (max-width: 560px) {
  .g-5, .proof, .ba, .wall { grid-template-columns: repeat(2, 1fr); }
  .table { font-size: 12.5px; }
  .table th, .table td { padding: var(--space-2) var(--space-1); }
}

@media print {
  .site-head, .chat-dock, .filterbar { display: none; }
  .sec--ink { background: none; color: var(--color-text); }
}