/* NEXA1 제품 페이지 — DRT T·Q 와 같은 바탕(밝은 바탕, 큰 사진, 절마다 한 가지). 네 언어 공용. 기체 전용 이름(dtn-), 구역 공통 규칙은 drt-q.css 와 같다.
   NEXA1 전용: 첫 화면 영상, 세척 구조도(n1hw, 옛 규칙 그대로), 어두운 무대의 비교 표 + SLAM 3D 지도(slam-map.js), 현장 사진 벽. */
.dtn {
  --dtn-bg: #f5f6f8;
  --dtn-white: #ffffff;
  --dtn-ink: #1a1a1a;
  --dtn-ink-2: #4d4d4d;
  --dtn-ink-3: #8a8a8a;
  --dtn-line: #e3e5e9;
  --dtn-stage: #0a0d13;       /* 어두운 무대 */
  --dtn-frame: #dfe1e6;       /* 사진 틀 바탕 */
  --dtn-good: #4caf50;        /* 수신기 화면과 같은 상태 색 */
  --dtn-bad: #ef5350;
  --dtn-accent: #0ea5e9;
  --dtn-radius: 20px;
  --dtn-max: 1200px;
  --dtn-wide: 1360px;
  --dtn-gutter: 24px;
  color: var(--dtn-ink);
  background: var(--dtn-white);
  font-size: 17px;
  line-height: 1.65;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.dtn * { box-sizing: border-box; }
.dtn :where(img) { display: block; max-width: 100%; height: auto; }
.dtn :where(h1, h2, h3) { margin: 0; letter-spacing: -0.02em; line-height: 1.2; font-weight: 600; }
.dtn :where(p) { margin: 0; }
.dtn :where(ul, ol, dl, dd, figure) { margin: 0; padding: 0; list-style: none; }
.dtn > svg[hidden] { display: none; }   /* 아이콘 모음: 사이트 공용 규칙이 svg 를 inline 으로 돌려놓는다 */

.dtn-wrap { width: 100%; max-width: var(--dtn-max); margin: 0 auto; padding: 0 var(--dtn-gutter); }
.dtn-wrap.is-wide { max-width: var(--dtn-wide); }
.dtn-center { text-align: center; }
.dtn-measure { max-width: 880px; margin-left: auto; margin-right: auto; }

/* 구역 공통 */
.dtn-section { padding: 112px 0; }
.dtn-section.is-gray { background: var(--dtn-bg); }
.dtn-kicker { display: block; margin-bottom: 14px; font-size: 15px; font-weight: 600; letter-spacing: 0.02em; color: var(--dtn-ink-3); }
.dtn-h2 { font-size: 44px; }
.dtn-lead { margin-top: 18px; font-size: 18px; color: var(--dtn-ink-2); }
.dtn-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.dtn-cap { margin-top: 10px; font-size: 14px; color: var(--dtn-ink-3); }
/* 짧은 문장 두세 개로 된 글은 문장마다 줄을 바꾼다(끝 낱말 하나만 다음 줄로 떨어지지 않게) */
.dtn-line { display: block; }

/* 사진 틀 */
.dtn-frame { overflow: hidden; border-radius: var(--dtn-radius); background: var(--dtn-frame); }
.dtn-frame img { width: 100%; height: 100%; object-fit: cover; }
/* 고글 화면(수신기가 그린 OSD 렌더): 영상처럼 보이도록 어두운 틀 */
.dtn-screen { overflow: hidden; border-radius: 14px; background: #101418; border: 1px solid var(--dtn-line); box-shadow: 0 24px 60px rgba(17,24,39,.12); }
.dtn-screen img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }

/* 등장 효과: 스크립트가 있을 때만 숨겼다가 보이면 올라온다(site.js 가 dtn-active 를 붙인다) */
html.js .dtn-reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
html.js .dtn-reveal.dtn-active { opacity: 1; transform: none; }
html.js .dtn-reveal.is-late { transition-delay: .15s; }
@media (prefers-reduced-motion: reduce) { html.js .dtn-reveal { opacity: 1; transform: none; transition: none; } }


/* ---------- 아이콘·차례 등장 ---------- */
.dtn-ic { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.dtn-compare h3 { display: flex; align-items: center; gap: 10px; }
.dtn-compare h3 .dtn-ic { color: rgba(255,255,255,.6); width: 22px; height: 22px; }
.dtn-stage-points .dtn-ic, .dtn-trio .dtn-ic, .dtn-cover-points .dtn-ic, .dtn-node > .dtn-ic { display: block; margin-bottom: 12px; width: 26px; height: 26px; color: var(--dtn-accent); }
.dtn-stage-points .dtn-ic, .dtn-cover-points .dtn-ic { color: rgba(255,255,255,.85); }
.dtn-node > .dtn-ic { margin-bottom: 10px; }
/* 묶음 안의 항목은 차례로 등장한다(첫째부터 90ms 간격) */
html.js .dtn-stagger > .dtn-reveal:nth-child(2) { transition-delay: .09s; }
html.js .dtn-stagger > .dtn-reveal:nth-child(3) { transition-delay: .18s; }
html.js .dtn-stagger > .dtn-reveal:nth-child(4) { transition-delay: .27s; }
html.js .dtn-stagger > .dtn-reveal:nth-child(5) { transition-delay: .36s; }
html.js .dtn-stagger > .dtn-reveal:nth-child(6) { transition-delay: .45s; }

/* ---------- 1. 첫 화면: 가운데 제목, 숲을 나는 사진이 주인공(스크롤에 따라 가라앉는 움직임은 site-motion.js) ---------- */
.dtn-hero { padding: 72px 0 0; background: var(--dtn-bg); }
.dtn-hero-title { font-size: 84px; line-height: 1; letter-spacing: -0.03em; font-weight: 700; }
.dtn-hero-sub { margin: 22px auto 0; max-width: 800px; font-size: 26px; line-height: 1.35; font-weight: 500; color: var(--dtn-ink); }
.dtn-hero-note { margin: 14px auto 0; max-width: 880px; font-size: 17px; color: var(--dtn-ink-2); }
.dtn-hero .dtn-actions { margin-top: 32px; }
.dtn-hero-photo { margin-top: 56px; aspect-ratio: 16 / 9; background: #0a0d13; }
.dtn-hero-photo video { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- 2. 숫자 한 줄 ---------- */
.dtn-numbers { padding: 40px 0; background: var(--dtn-bg); }
.dtn-numbers ul { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--dtn-line); border-bottom: 1px solid var(--dtn-line); }
.dtn-numbers li { padding: 26px 24px; text-align: center; border-left: 1px solid var(--dtn-line); }
.dtn-numbers li:first-child { border-left: 0; }
.dtn-numbers strong { display: block; font-size: 38px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.dtn-numbers strong small { font-size: 22px; font-weight: 500; margin-left: 2px; }
.dtn-numbers [data-count] { display: inline; font: inherit; color: inherit; letter-spacing: inherit; line-height: inherit; }   /* 회사소개 숫자 규칙(display:block·글자 크기)을 되돌린다 */
.dtn-numbers span { display: block; margin-top: 8px; font-size: 15px; color: var(--dtn-ink-3); }

/* ---------- 3. 소개와 여섯 가지 특징: 아이콘 + 제목 + 한 줄. 누르면 그 기능의 절로 간다 ---------- */
.dtn-feats { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 48px; }
.dtn-feats a { display: block; padding: 28px 0 32px; border-top: 1px solid var(--dtn-line); color: inherit; text-decoration: none; }
.dtn-feats .dtn-ic { display: block; width: 28px; height: 28px; color: var(--dtn-accent); }
.dtn-feats h3 { margin-top: 16px; font-size: 21px; }
.dtn-feats p { margin-top: 8px; font-size: 16px; color: var(--dtn-ink-2); }
.dtn-feats a:hover h3 { color: var(--dtn-accent); }

/* ---------- 4. 어두운 무대: 영상 보안. 문제 제기 → 비교 표 → 키 화면 ---------- */
.dtn-stage { padding: 112px 0 104px; background: var(--dtn-stage); color: #fff; }
.dtn-stage .dtn-kicker { color: rgba(255,255,255,.55); }
.dtn-stage .dtn-lead { color: rgba(255,255,255,.72); }
.dtn-stage .dtn-cap { color: rgba(255,255,255,.5); }
/* 비교 표: 왼쪽은 기성 저가 드론, 오른쪽은 DRT Q. 표시(×·✓)가 정보를 담으므로 색을 쓴다 */
.dtn-compare { margin: 64px auto 0; max-width: 1040px; border-top: 1px solid rgba(255,255,255,.18); }
.dtn-compare > div { display: grid; grid-template-columns: 200px 1fr 1fr; gap: 0 32px; padding: 22px 0; border-bottom: 1px solid rgba(255,255,255,.12); align-items: start; }
.dtn-compare .is-head { padding: 14px 0; font-size: 14px; font-weight: 600; letter-spacing: 0.02em; color: rgba(255,255,255,.55); border-bottom-color: rgba(255,255,255,.18); }
.dtn-compare .is-head b { font-weight: 600; }
.dtn-compare .is-head .dtn-us { color: #fff; }
.dtn-compare h3 { font-size: 17px; font-weight: 600; color: rgba(255,255,255,.9); }
.dtn-compare p { position: relative; padding-left: 30px; font-size: 16px; line-height: 1.55; color: rgba(255,255,255,.72); }
.dtn-compare p::before { content: ""; position: absolute; left: 0; top: .2em; width: 18px; height: 18px; border-radius: 50%; background-position: center; background-repeat: no-repeat; background-size: 10px 10px; }
.dtn-compare .dtn-them::before { background-color: rgba(239,83,80,.18); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 2l6 6M8 2l-6 6' stroke='%23ef5350' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E"); }
.dtn-compare .dtn-us::before { background-color: rgba(76,175,80,.18); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M1.8 5.2l2.3 2.3L8.3 2.8' fill='none' stroke='%234caf50' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.dtn-compare .dtn-us { color: #fff; }
/* 키 화면: 표 아래에 수신기 화면 한 장과 글 셋 */
.dtn-stage-shot { margin: 88px auto 0; max-width: 1040px; }
.dtn-stage-shot .dtn-screen { border-color: rgba(255,255,255,.14); box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.dtn-stage-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 48px; max-width: 1040px; margin: 48px auto 0; }
.dtn-stage-points li { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.18); }
.dtn-stage-points h3 { font-size: 20px; }
.dtn-stage-points p { margin-top: 8px; font-size: 16px; color: rgba(255,255,255,.7); }

/* ---------- 4b. 글 셋(아이콘 + 제목 + 글) ---------- */
.dtn-trio { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 48px; }
.dtn-trio li { padding-top: 20px; border-top: 1px solid var(--dtn-line); }
.dtn-trio h3 { font-size: 21px; }
.dtn-trio p { margin-top: 8px; font-size: 16px; color: var(--dtn-ink-2); }

/* ---------- 5. 글 + 영상(사진) 2단 ---------- */
.dtn-split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px 72px; align-items: center; }
.dtn-split .dtn-lead { margin-top: 20px; }
.dtn-split ul { margin-top: 28px; }
.dtn-split li { padding: 14px 0; border-top: 1px solid var(--dtn-line); font-size: 16px; color: var(--dtn-ink-2); }
.dtn-split li:last-child { border-bottom: 1px solid var(--dtn-line); }
.dtn-split li strong { color: var(--dtn-ink); font-weight: 600; margin-right: 8px; }
.dtn-split.is-flip > .dtn-reveal:first-child { order: 2; }
.dtn-split.is-flip > .dtn-video { order: 1; }
.dtn-frame.dtn-tall { aspect-ratio: 3 / 4; max-width: 460px; margin: 0 auto; }
.dtn-frame.is-dark { background: #000; aspect-ratio: 1112 / 794; }
.dtn-video { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 14px; background: #101418; border: 1px solid var(--dtn-line); }
.dtn-video video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
/* 세로 영상(오토 스윕): 글 칸을 넓히고 영상은 9:16 카드로, 화면 높이를 넘지 않게 */
.dtn-split.is-portrait { grid-template-columns: minmax(0, 1fr) auto; gap: 48px 96px; }
.dtn-video.is-portrait { aspect-ratio: 9 / 16; width: min(400px, calc(min(78vh, 720px) * 9 / 16)); justify-self: end; border-radius: 22px; }

/* ---------- 6. 테더 커버: 사진 전체 폭, 글은 사진 위 ---------- */
.dtn-cover { position: relative; overflow: hidden; background: #1c1c1e; color: #fff; }
.dtn-cover > img { width: 100%; height: 100%; min-height: 560px; max-height: 720px; object-fit: cover; object-position: 50% 35%; }
.dtn-cover-text { position: absolute; inset: 0; display: flex; align-items: flex-end; padding: 0 0 72px; background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,.78) 100%); }
.dtn-cover-text .dtn-kicker { color: rgba(255,255,255,.7); }
.dtn-cover-text .dtn-h2 { max-width: 720px; }
.dtn-cover-points { margin-top: 24px; display: grid; grid-template-columns: repeat(3, minmax(0, 300px)); gap: 20px 40px; }
.dtn-cover-points h3 { font-size: 18px; }
.dtn-cover-points p { margin-top: 6px; font-size: 15px; color: rgba(255,255,255,.82); }

/* ---------- 10. 사양: 왼쪽 사진, 오른쪽 목록 ---------- */
.dtn-specs { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px 80px; align-items: start; }
.dtn-specs-photo { position: sticky; top: 96px; }
.dtn-specs-photo .dtn-frame { aspect-ratio: 959 / 1280; max-width: 440px; margin: 0 auto; background: var(--dtn-white); border: 1px solid var(--dtn-line); }
.dtn-specs-photo .dtn-frame img { object-fit: contain; }
.dtn-specs-note { margin-top: 12px; font-size: 13px; color: var(--dtn-ink-3); text-align: center; }
.dtn-spec-group { margin-top: 36px; padding-bottom: 10px; font-size: 15px; font-weight: 600; color: var(--dtn-ink-3); }
.dtn-spec-list > div { display: grid; grid-template-columns: 180px 1fr; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--dtn-line); font-size: 16px; }
.dtn-spec-list > div:first-child { border-top: 1px solid var(--dtn-line); }
.dtn-spec-list dt { color: var(--dtn-ink-3); }
.dtn-spec-list dd { color: var(--dtn-ink); }
.dtn-spec-list dd span { display: block; }
.dtn-specs .dtn-actions { justify-content: flex-start; margin-top: 32px; }

/* ---------- NEXA1 전용 ---------- */
/* 2단 절의 항목 셋(아이콘 + 제목 + 한 줄) */
.dtn-points { margin-top: 28px; }
.dtn-points li { display: grid; grid-template-columns: 26px 1fr; gap: 0 14px; padding: 14px 0; border-top: 1px solid var(--dtn-line); }
.dtn-points li:last-child { border-bottom: 1px solid var(--dtn-line); }
.dtn-points .dtn-ic { grid-row: span 2; width: 24px; height: 24px; margin-top: 2px; color: var(--dtn-accent); }
.dtn-points h3 { font-size: 17px; }
.dtn-points p { margin-top: 3px; font-size: 15px; color: var(--dtn-ink-2); }
/* 숫자 셋(오토 스윕) */
.dtn-stat-trio { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--dtn-line); border-bottom: 1px solid var(--dtn-line); }
.dtn-stat-trio li { padding: 18px 12px 18px 0; border-left: 1px solid var(--dtn-line); padding-left: 16px; }
.dtn-stat-trio li:first-child { border-left: 0; padding-left: 0; }
.dtn-stat-trio strong { display: block; font-size: 30px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.dtn-stat-trio strong small { font-size: 18px; font-weight: 500; margin-left: 2px; }
.dtn-stat-trio span { display: block; margin-top: 6px; font-size: 14px; color: var(--dtn-ink-3); }
/* 크기 둘(접이식) */
.dtn-stat-duo { margin-top: 28px; border-top: 1px solid var(--dtn-line); }
.dtn-stat-duo li { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--dtn-line); align-items: baseline; }
.dtn-stat-duo span { font-size: 15px; color: var(--dtn-ink-3); }
.dtn-stat-duo strong { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }
.dtn-soon { display: inline-block; margin-left: 8px; padding: 2px 9px; border-radius: var(--r-ctl); background: var(--dtn-ink); color: #fff; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; vertical-align: 2px; }
/* 세척 구조도: 판은 옛 규칙 그대로(아래 n1hw), 절 폭만 넓게 */
.dtn-how-board { max-width: 1440px; margin: 48px auto 0; padding: 0 var(--dtn-gutter); }
/* 센서 화면 둘 */
.dtn-shots { margin: 56px auto 0; max-width: 1100px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.dtn-shots .dtn-screen img { aspect-ratio: auto; }
.dtn-shots figcaption { margin-top: 10px; font-size: 14px; color: var(--dtn-ink-3); }
/* 현장 모음 사진: 원본 그대로 */
.dtn-ref { margin: 56px auto 0; max-width: 1000px; overflow: hidden; border-radius: var(--dtn-radius); }
.dtn-ref img { width: 100%; }
/* 현장 사진 벽(미사용) */
.dtn-wall { margin-top: 56px; display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 260px; gap: 12px; }
.dtn-wall figure { overflow: hidden; border-radius: 14px; background: var(--dtn-frame); }
.dtn-wall figure.is-wide { grid-column: span 2; }
.dtn-wall img { width: 100%; height: 100%; object-fit: cover; transition: scale 1.2s cubic-bezier(.22,.61,.36,1); }
.dtn-wall figure:hover img { scale: 1.04; transition-duration: .6s; }
/* 사양 사진: 흰 바탕 기체 사진 */
.dtn-specs-photo .dtn-frame { aspect-ratio: 16 / 10; max-width: none; background: var(--dtn-white); border: 1px solid var(--dtn-line); }
.dtn-specs-photo .dtn-frame img { object-fit: contain; }

/* ---------- 어두운 무대 안의 SLAM 3D 지도(slam-map.js 가 쓰는 n1-slam-* 이름은 그대로) ---------- */
.dtn-slam { margin: 88px auto 0; max-width: 1100px; }
.dtn-slam-head { max-width: 760px; margin-bottom: 28px; }
.dtn-slam-head h3 { font-size: 26px; }
.dtn-slam-head p { margin-top: 12px; font-size: 16px; color: rgba(255,255,255,.72); }
#n1-page .n1-slam-viewer [hidden] { display: none; }
#n1-page .n1-slam-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
#n1-page .n1-slam-tabs button { padding: 9px 18px; border-radius: var(--r-ctl); border: 1px solid rgba(255,255,255,.18); background: transparent; color: rgba(255,255,255,.75); font: inherit; font-size: 15px; cursor: pointer; }
#n1-page .n1-slam-tabs button[aria-selected="true"] { background: #fff; border-color: #fff; color: var(--dtn-ink); }
#n1-page .n1-slam-stage { position: relative; width: 100%; aspect-ratio: 16 / 9; max-height: 78vh; border-radius: 14px; overflow: hidden; background: #060a14; border: 1px solid rgba(255,255,255,.14); }
#n1-page .n1-slam-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; outline: none; }
#n1-page .n1-slam-stage canvas:active { cursor: grabbing; }
#n1-page .n1-slam-stage img[data-slam-poster] { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: cover; pointer-events: none; transition: opacity .5s; }
#n1-page .n1-slam-stage img.is-gone { opacity: 0; }
#n1-page .n1-slam-status { position: absolute; left: 50%; top: 50%; z-index: 2; transform: translate(-50%, -50%); padding: 10px 20px; border-radius: var(--r-ctl); background: rgba(0,0,0,.7); color: #fff; font-size: 14px; }
#n1-page .n1-slam-tools { position: absolute; top: 14px; right: 14px; z-index: 3; display: flex; gap: 6px; }
#n1-page .n1-slam-tools button { min-width: 38px; height: 36px; padding: 0 12px; border-radius: 10px; border: 1px solid rgba(255,255,255,.18); background: rgba(11,17,32,.8); color: #fff; font: inherit; font-size: 14px; cursor: pointer; }
#n1-page .n1-slam-tools button:hover { background: rgba(255,255,255,.2); }
#n1-page .n1-slam-hint { position: absolute; left: 14px; bottom: 12px; z-index: 3; max-width: calc(100% - 28px); padding: 5px 12px; border-radius: 8px; background: rgba(0,0,0,.6); color: rgba(255,255,255,.85); font-size: 13px; }
#n1-page .n1-slam-hint:empty { display: none; }
#n1-page .n1-slam-hint.is-alert { background: var(--dtn-accent); color: #fff; }
#n1-page .n1-slam-info { margin-top: 12px; font-size: 14px; color: rgba(255,255,255,.55); }
#n1-page .n1-slam-stage.is-full { position: fixed; inset: 0; z-index: 1000; aspect-ratio: auto; max-height: none; border: 0; border-radius: 0; }
#n1-page .n1-slam-stage.is-full canvas { touch-action: none; }
html.n1-slam-lock, html.n1-slam-lock body { overflow: hidden; }
.dtn-slam-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 48px; margin-top: 40px; }
.dtn-slam-notes > div { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.18); }
.dtn-slam-notes h4 { font-size: 18px; margin-bottom: 14px; }
.dtn-slam-notes p { margin-top: 14px; font-size: 15px; color: rgba(255,255,255,.7); }
.dtn-slam-bar { display: block; height: 10px; border-radius: 5px; background: linear-gradient(90deg, #440154, #482475, #414487, #355f8d, #2a788e, #21918c, #22a884, #44bf70, #7ad151, #bddf26, #fde725); }
.dtn-slam-ticks { display: flex; justify-content: space-between; margin-top: 6px; font-size: 13px; color: rgba(255,255,255,.55); }
.dtn-slam-notes ol li { display: grid; grid-template-columns: 32px 56px 1fr; gap: 10px; align-items: baseline; padding: 9px 0; border-top: 1px solid rgba(255,255,255,.12); font-size: 15px; color: rgba(255,255,255,.72); }
.dtn-slam-notes ol li:first-child { border-top: 0; padding-top: 0; }
.dtn-slam-notes ol span { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; color: rgba(255,255,255,.5); }
.dtn-slam-notes ol b { color: #fff; font-weight: 600; }

/* ---------- 화면 폭 ---------- */
@media (max-width: 1024px) {
  .dtn-section { padding: 88px 0; }
  .dtn-h2 { font-size: 36px; }
  .dtn-hero-title { font-size: 68px; }
  .dtn-hero-sub { font-size: 22px; }
  .dtn-feats { grid-template-columns: repeat(2, 1fr); gap: 0 40px; }
  .dtn-compare > div { grid-template-columns: 150px 1fr 1fr; gap: 0 20px; }
  .dtn-wall { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 220px; }
  .dtn-shots { grid-template-columns: 1fr; }
  .dtn-flow { grid-template-columns: 1fr; gap: 0; max-width: 620px; }
  .dtn-link { width: 2px; height: 72px; margin: 0 auto; background: repeating-linear-gradient(180deg, var(--dtn-accent) 0 10px, transparent 10px 18px); background-size: 2px 18px; }
  @keyframes dtn-dash { to { background-position: 0 18px; } }
  .dtn-specs { grid-template-columns: 1fr; gap: 40px; }
  .dtn-specs-photo { position: static; max-width: 560px; }
  .dtn-cover-points { grid-template-columns: repeat(2, minmax(0, 300px)); }
}
@media (max-width: 768px) {
  .dtn { --dtn-gutter: 16px; --dtn-radius: 14px; font-size: 16px; }
  .dtn-section { padding: 64px 0; }
  .dtn-h2 { font-size: 30px; }
  .dtn-lead { font-size: 17px; margin-top: 14px; }
  .dtn-kicker { font-size: 14px; margin-bottom: 10px; }
  .dtn-hero { padding-top: 48px; }
  .dtn-hero-title { font-size: 56px; }
  .dtn-hero-sub { font-size: 20px; margin-top: 16px; }
  .dtn-hero-note { font-size: 16px; }
  .dtn-hero .dtn-actions { margin-top: 24px; }
  .dtn-hero-photo { margin-top: 36px; aspect-ratio: 4 / 3; }
  .dtn-numbers { padding: 28px 0; }
  .dtn-numbers ul { grid-template-columns: 1fr 1fr; border-bottom: 0; }
  .dtn-numbers li { padding: 20px 8px; border-left: 0; border-bottom: 1px solid var(--dtn-line); }
  .dtn-numbers li:nth-child(odd) { border-right: 1px solid var(--dtn-line); }
  .dtn-numbers strong { font-size: 30px; }
  .dtn-numbers strong small { font-size: 18px; }
  .dtn-numbers span { font-size: 14px; }
  .dtn-feats { margin-top: 36px; grid-template-columns: 1fr; gap: 0; }
  .dtn-feats a { padding: 20px 0 22px; }
  .dtn-feats h3 { font-size: 20px; }
  .dtn-ic { width: 22px; height: 22px; }
  .dtn-stage { padding: 64px 0 56px; }
  /* 폰: 비교 표는 항목마다 한 묶음(제목, 기성, DRT Q 순) */
  .dtn-compare { margin-top: 40px; }
  .dtn-compare > div { grid-template-columns: 1fr; gap: 10px; padding: 18px 0; }
  .dtn-compare .is-head { display: none; }
  .dtn-compare p::before { top: .15em; }
  .dtn-compare .dtn-them::after { content: attr(data-side); display: block; margin-top: 2px; font-size: 12px; font-weight: 600; color: rgba(255,255,255,.45); }
  .dtn-compare .dtn-us::after { content: attr(data-side); display: block; margin-top: 2px; font-size: 12px; font-weight: 600; color: rgba(255,255,255,.6); }
  .dtn-stage-shot { margin-top: 48px; }
  .dtn-stage-points { grid-template-columns: 1fr; gap: 20px; margin-top: 32px; }
  .dtn-flow { margin-top: 40px; }
  .dtn-node { padding: 22px 20px 20px; }
  .dtn-link { height: 56px; }
  .dtn-osd-main { margin-top: 32px; }
  .dtn-osd-duo { margin-top: 32px; grid-template-columns: 1fr; gap: 20px; }
  .dtn-osd-grid, .dtn-osd-grid.is-three { grid-template-columns: 1fr; gap: 20px; margin-top: 20px; }
  .dtn-trio { margin-top: 40px; grid-template-columns: 1fr; gap: 20px; }
  .dtn-split { grid-template-columns: 1fr; gap: 32px; }
  .dtn-split .dtn-video, .dtn-split .dtn-frame { order: -1; }
  .dtn-split.is-portrait { grid-template-columns: 1fr; }
  .dtn-video.is-portrait { width: min(72vw, 320px, calc(70svh * 9 / 16)); justify-self: center; }
  .dtn-stat-trio strong { font-size: 24px; }
  .dtn-wall { margin-top: 32px; grid-template-columns: 1fr 1fr; grid-auto-rows: 160px; gap: 8px; }
  .dtn-wall figure.is-wide { grid-column: span 2; }
  .dtn-slam { margin-top: 48px; }
  .dtn-slam-notes { grid-template-columns: 1fr; gap: 20px; }
  #n1-page .n1-slam-stage { aspect-ratio: 1 / 1; max-height: 70vh; }
  #n1-page .n1-slam-tabs button { flex: 1 1 0; padding: 9px 12px; font-size: 14px; }
  #n1-page .n1-slam-tools { top: 10px; right: 10px; left: 10px; justify-content: flex-end; flex-wrap: wrap; }
  #n1-page .n1-slam-tools button { height: 34px; padding: 0 10px; font-size: 13px; }
  .dtn-how-board { margin-top: 32px; }
  .dtn-stat-duo li { grid-template-columns: 90px 1fr; }
  .dtn-stat-duo strong { font-size: 18px; }
  .dtn-cover > img { min-height: 0; height: auto; aspect-ratio: 4 / 3; max-height: none; }
  .dtn-cover-text { position: static; display: block; padding: 28px 0 40px; background: #1c1c1e; }
  .dtn-cover-points { grid-template-columns: 1fr; gap: 14px; margin-top: 16px; }
  .dtn-app-main { margin-top: 32px; }
  .dtn-app-sub { grid-template-columns: 1fr; gap: 12px; margin-top: 12px; }
  .dtn-spec-group { margin-top: 28px; }
  .dtn-spec-list > div { grid-template-columns: 110px 1fr; gap: 12px; font-size: 15px; padding: 13px 0; }
  .dtn-specs .dtn-actions { margin-top: 24px; }
}
@media (max-width: 400px) {
  .dtn-hero-title { font-size: 48px; }
}

/* ---------- 세척 구조도(n1hw): 옛 CSS 그대로(판 안 크기는 var(--u) 배수) ---------- */
#n1-page .n1hw.n1-reveal { opacity: 1; transform: none; }
/* 물 분사 구조도 절 (#n1-how): 1920×850 기준 판을 절 폭에 맞춰 줄이는 포스터형 배치.
   판 안 크기는 모두 var(--u) 배수(1u = 판 폭의 1/1920). 좁은 화면은 장면 위·목록 아래 세로 배치. */
#n1-page .n1hw { container-type: inline-size; max-width: 1400px; margin: 0 auto !important; }
#n1-page .n1hw-board { --u: calc(100cqw / 1920); display: grid; grid-template-columns: calc(var(--u) * 1180) 1fr; grid-template-rows: calc(var(--u) * 760) calc(var(--u) * 90); column-gap: calc(var(--u) * 24) !important; background: #fff; border: 1px solid #E2E8F0; border-radius: calc(var(--u) * 20); overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.06); }
#n1-page .n1hw-scene { display: block; position: relative; align-self: center; cursor: zoom-in; }
#n1-page .n1hw-svg { display: block; width: 100%; height: auto; }
#n1-page .n1hw-svg text { fill: #0C1424; }
#n1-page .n1hw-lbl { font-size: 16px; font-weight: 500; }
#n1-page .n1hw-lblb { font-weight: 600; }
#n1-page .n1hw-halo { font-size: 15px; font-weight: 500; paint-order: stroke; stroke: #fff; stroke-width: 5px; stroke-linejoin: round; }
#n1-page .n1hw-mk text { font-size: 17px; font-weight: 700; fill: #fff; text-anchor: middle; }
#n1-page .n1hw-steps { display: flex; flex-direction: column; background: #F6F8FC; border-left: 1px solid #E2E8F0; }
#n1-page .n1hw-steps ol { list-style: none; display: contents; }
#n1-page .n1hw-steps li, #n1-page .n1hw-opt { flex: 1 1 auto; display: flex; align-items: center; gap: calc(var(--u) * 14) !important; padding: 0 calc(var(--u) * 20) !important; border-top: 1px solid #E2E8F0; }
#n1-page .n1hw-steps li:first-child { border-top: 0; }
#n1-page .n1hw-num { flex: 0 0 calc(var(--u) * 36); height: calc(var(--u) * 36); border-radius: 50%; background: #0C1424; color: #fff; font-family: inherit; font-weight: 700; font-size: calc(var(--u) * 19); line-height: calc(var(--u) * 36); text-align: center; }
#n1-page .n1hw-num-opt { background: #fff; border: 2px dashed #64748B; }
#n1-page .n1hw-steps b { display: block; color: #0C1424; font-weight: 700; font-size: calc(var(--u) * 21); line-height: 1.25; margin-bottom: calc(var(--u) * 3); }
#n1-page .n1hw-steps p { color: #2B3549; font-size: calc(var(--u) * 17); line-height: 1.36; margin: 0; }
#n1-page .n1hw-band { grid-column: 1 / -1; display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr 1.25fr; background: #F6F8FC; border-top: 1px solid #E2E8F0; }
#n1-page .n1hw-fact { padding: 0 calc(var(--u) * 22) !important; border-left: 1px solid #E2E8F0; display: flex; flex-direction: column; justify-content: center; }
#n1-page .n1hw-fact:first-child { border-left: 0; padding-left: calc(var(--u) * 40) !important; }
#n1-page .n1hw-fact b { color: #0C1424; font-family: inherit; font-weight: 700; font-size: calc(var(--u) * 27); line-height: 1.2; }
#n1-page .n1hw-fact span { color: #5B6579; font-size: calc(var(--u) * 16); line-height: 1.3; margin-top: calc(var(--u) * 2); }
#n1-page .n1hw-foot { border-left: 1px solid #E2E8F0; margin: 0; padding: 0 calc(var(--u) * 30) 0 calc(var(--u) * 22) !important; display: flex; align-items: center; color: #5B6579; font-size: calc(var(--u) * 15); line-height: 1.35; }
#n1-page .n1hw-zoom { position: absolute; left: calc(var(--u) * 16); top: calc(var(--u) * 26); background: rgba(12,20,36,0.86); color: #fff; font-size: max(11px, calc(var(--u) * 15)); font-weight: 600; line-height: 1.2; white-space: nowrap; padding: 0.4em 0.95em !important; border-radius: var(--r-ctl); }
/* 물 흐름: 호스·급수관 위 쉐브론이 SVG 애니메이션(animateMotion)으로 흐른다. 움직임 줄이기 설정이면 정지한 쉐브론 묶음으로 바꾼다 */
#n1-page .n1hw-chev { fill: #1D8CE0; stroke: #fff; stroke-width: 1.6; stroke-linejoin: round; }
#n1-page .n1hw-flow-static { display: none; }
@media (prefers-reduced-motion: reduce) {
  #n1-page .n1hw-flow { display: none; }
  #n1-page .n1hw-flow-static { display: inline; }
}
@media (max-width: 1179px) {
  #n1-page .n1hw { max-width: 860px; }
  #n1-page .n1hw-board { --u: 0.9px; display: block; }
  #n1-page .n1hw-zoom { position: static; display: block; background: none; color: #1565C0; text-align: right; font-size: 0.85rem; padding: 8px 14px !important; border-radius: 0; }
  #n1-page .n1hw-steps { border-left: 0; border-top: 1px solid #E2E8F0; }
  #n1-page .n1hw-steps ol { display: block; }
  #n1-page .n1hw-steps li, #n1-page .n1hw-opt { padding: 16px 18px !important; align-items: flex-start; gap: 14px; }
  #n1-page .n1hw-steps li:first-child { border-top: 0; }
  #n1-page .n1hw-num { flex-basis: 34px; height: 34px; line-height: 34px; font-size: 1rem; }
  #n1-page .n1hw-band { grid-template-columns: 1fr 1fr; border-top: 1px solid #E2E8F0; }
  #n1-page .n1hw-fact, #n1-page .n1hw-fact:first-child { padding: 14px 18px !important; border-left: 0; border-top: 1px solid #E2E8F0; }
  #n1-page .n1hw-fact:nth-child(-n+2) { border-top: 0; }
  #n1-page .n1hw-fact:nth-child(even) { border-left: 1px solid #E2E8F0; }
  #n1-page .n1hw-fact b { font-size: 1.15rem; }
  #n1-page .n1hw-fact span { font-size: 0.85rem; }
  #n1-page .n1hw-foot { grid-column: 1 / -1; border-left: 0; border-top: 1px solid #E2E8F0; padding: 14px 18px !important; font-size: 0.8rem; }
  #n1-page .n1hw-steps b { font-size: 1.05rem; }
  #n1-page .n1hw-steps p { font-size: 0.95rem; line-height: 1.6; }
}