@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');
:root {
  --clay:#D97757; --clay-deep:#C15F3C; --char:#141413; --char-2:#1F1E1C;
  --paper:#F4F1EA; --paper-2:#EAE5DA; --white:#FFFFFF; --mute:#6B6A65; --night-mute:#B4B0A7; --tide:#2B6E69;
  --line:#DAD6CD; --radius:20px; --panel-radius:28px;
  --font:"Pretendard Variable",Pretendard,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --shadow:0 24px 64px -26px #14141366; --header-height:72px;
}

/* ── 바탕 ── */
* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-padding-top:96px; scrollbar-color:var(--tide) var(--paper); }
body { margin:0; background:var(--paper); color:var(--char); font:400 17px/1.7 var(--font); word-break:keep-all; overflow-wrap:anywhere; caret-color:var(--clay-deep); accent-color:var(--tide); }
::selection { background:var(--clay); color:var(--char); }
[hidden] { display:none !important; }
:focus-visible { outline:3px solid var(--tide); outline-offset:5px; }
a { color:inherit; text-underline-offset:.24em; }
button,input { font:inherit; }
button,a,input { -webkit-tap-highlight-color:transparent; }
button { cursor:pointer; border:0; }
button,.button { min-height:44px; line-height:1.4; }
button:disabled { cursor:default; opacity:.55; }
input { min-width:0; max-width:100%; }
img,video,iframe,svg { max-width:100%; }
img { display:block; height:auto; }
h1,h2,h3,h4 { text-wrap:balance; line-height:1.18; font-weight:850; letter-spacing:-.035em; margin:0; }
p { text-wrap:pretty; margin:0 0 1em; }
h1 { font-size:clamp(2.6rem,6.2vw,5.6rem); }
h2 { font-size:clamp(2rem,4.4vw,3.8rem); }
h3 { font-size:clamp(1.4rem,2.2vw,1.9rem); }
:where(main,section,article,div,figure,nav,li) { min-inline-size:0; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip-path:inset(50%); border:0; }
/* 의미 단위: 줄은 단위 사이에서만 바뀐다. 단위가 줄보다 길면 단위 안에서 어절 단위로 접힌다. */
.u { display:inline-block; max-inline-size:100%; }
/* 문장 단위: 안내문의 문장마다 줄을 바꾼다. */
.sent { display:block; }
.wrap { width:min(100%,1328px); padding-inline:clamp(16px,5vw,64px); margin-inline:auto; }
.section { padding-block:clamp(72px,9vw,128px); }
.eyebrow { margin:0 0 14px; color:var(--clay-deep); font-size:16px; font-weight:750; letter-spacing:.02em; }
.split-title > span { display:block; color:var(--mute); }
.split-title > strong { display:block; font-weight:inherit; }
.lead { font-size:clamp(1.1rem,1.8vw,1.35rem); line-height:1.7; max-inline-size:40em; margin-top:22px; }
.section-intro { max-inline-size:52rem; margin-bottom:clamp(32px,5vw,56px); }

/* ── 단추와 아이콘 ── */
.button { display:inline-flex; align-items:center; justify-content:center; gap:10px; min-height:52px; padding:14px 24px; border-radius:999px; background:var(--char); color:var(--white); font-weight:650; text-decoration:none; text-align:center; transition:background .2s,transform .2s; }
.button:hover { background:var(--char-2); transform:translateY(-2px); }
.button.primary { background:var(--clay); color:var(--char); }
.button.primary:hover { background:#E98C6D; }
.button.secondary { background:transparent; box-shadow:inset 0 0 0 1.5px currentColor; color:inherit; }
.button.secondary:hover { background:#14141310; }
.icon { width:22px; height:22px; flex:none; fill:none; stroke:currentColor; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round; }
.actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:30px; }
.copy-points { display:flex; flex-wrap:wrap; gap:10px 24px; padding:0; margin:24px 0 0; list-style:none; font-size:17px; }
.copy-points li::before { content:""; display:inline-block; inline-size:6px; block-size:6px; margin-inline-end:10px; margin-block-end:3px; border-radius:50%; background:var(--clay); }

/* ── 머리글 ── */
.skip-link { position:fixed; left:16px; top:-100px; z-index:100; padding:10px 18px; background:var(--white); color:var(--char); }
.skip-link:focus { top:12px; }
.site-header { position:fixed; top:0; inset-inline:0; z-index:40; height:var(--header-height); display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:16px; padding:8px clamp(12px,3vw,40px); color:var(--white); background:#141413eb; border-bottom:1px solid #ffffff16; backdrop-filter:blur(12px); }
.logo { display:inline-flex; align-items:center; gap:9px; width:fit-content; min-height:44px; text-decoration:none; font-size:25px; font-weight:850; letter-spacing:-.04em; }
.logo svg { width:30px; height:30px; color:var(--clay); }
.brand-lockup { display:grid; gap:4px; line-height:1.1; }
.brand-tagline { font-size:16px; font-weight:500; letter-spacing:-.02em; color:#C3BFB7; }
.pill-nav { display:flex; align-items:center; padding:4px; gap:4px; border:1px solid #ffffff24; border-radius:999px; background:#ffffff0d; }
.pill-nav a { display:flex; align-items:center; justify-content:center; min-height:44px; padding:8px 21px; border-radius:999px; text-decoration:none; font-weight:600; font-size:16px; color:#E4E0D7; }
.pill-nav a:hover,.pill-nav a[aria-current="page"] { background:var(--white); color:var(--char); }
.join-area { justify-self:end; }
.join-trigger { min-height:44px; padding:10px 18px; border-radius:999px; background:var(--clay); color:var(--char); font-weight:700; }
.join-popover { position:absolute; top:80px; right:clamp(12px,3vw,40px); width:min(390px,calc(100vw - 24px)); padding:26px; border-radius:var(--radius); background:var(--white); color:var(--char); box-shadow:var(--shadow); }
.join-popover h2 { font-size:24px; margin-bottom:8px; }
.join-popover p { font-size:16px; }
.join-form { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:10px; }
.join-form input { width:100%; border:1px solid #B9B5AC; border-radius:10px; padding:12px; font-size:20px; letter-spacing:.12em; font-variant-numeric:tabular-nums; }
.join-form .button { padding-inline:20px; }
#msg { margin:14px 0 0; color:var(--tide); }
#msg.is-bad { color:var(--clay-deep); }

/* ── 바닥글과 만든 사람 ── */
.site-footer { padding-block:36px 94px; display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; border-top:1px solid var(--line); }
.maker-button { min-height:44px; padding:8px 0; background:transparent; color:inherit; font-weight:650; text-align:left; }
.site-footer p { flex:1 1 420px; max-inline-size:60ch; color:var(--mute); font-size:16px; margin:0; }
.maker-dialog { width:min(520px,calc(100% - 32px)); max-height:calc(100dvh - 48px); padding:32px; border:0; border-radius:var(--radius); background:var(--paper); color:var(--char); box-shadow:var(--shadow); }
.maker-dialog::backdrop { background:#141413a6; backdrop-filter:blur(5px); }
.maker-dialog h2 { font-size:30px; padding-right:44px; margin-bottom:24px; }
.dialog-close { position:absolute; right:16px; top:14px; display:grid; place-items:center; min-width:44px; min-height:44px; border-radius:50%; background:var(--white); color:var(--char); }
.contact-links { display:flex; flex-wrap:wrap; gap:12px; margin-block:24px; }
.contact-links a,.contact-links span { display:inline-flex; align-items:center; gap:6px; min-height:44px; }

/* ── 첫 화면(인트로) ── */
.intro-page { background:var(--char); color:var(--white); }
.intro-page .site-footer { border-color:#ffffff24; }
.intro-page .site-footer p { color:var(--night-mute); }
.intro-stage { position:relative; min-height:100svh; display:grid; place-items:center; isolation:isolate; padding:104px 20px 80px; overflow:clip; background:var(--char); }
.intro-stage::before { content:""; position:absolute; inset:0; z-index:-3; background:url('../img/hero-desk.webp') center/cover; filter:brightness(.25); }
.intro-stage::after { content:""; position:absolute; inset:0; z-index:-2; pointer-events:none; background:radial-gradient(ellipse at 70% 66%,#D9775738,transparent 44%),radial-gradient(ellipse at 28% 72%,#2B6E6938,transparent 48%); }
.intro-stage.intro-active::before,.intro-stage.intro-active::after { visibility:hidden; }
.intro-mount { position:relative; }
.intro-ending { position:relative; z-index:2; width:min(100%,900px); text-align:center; }
.intro-ending h1 { font-size:clamp(2.4rem,5.6vw,5.2rem); font-weight:900; }
.intro-ending .split-title > span { color:var(--night-mute); }
.intro-ending .tagline { color:var(--night-mute); font-size:clamp(1rem,2vw,1.3rem); margin:0 0 28px; }
.intro-ending .lead { margin-inline:auto; color:#E0DDD6; }
.intro-ending .actions { justify-content:center; margin-top:40px; }
.replay { display:inline-flex; align-items:center; min-height:44px; margin-top:24px; padding:8px 12px; background:transparent; color:var(--night-mute); text-decoration:underline; text-underline-offset:.3em; }
/* 모듈이 계산한 로고 아래 위치를 상속한다. 전체 장면을 덮는 배경은 두지 않는다. */
.intro-active .intro-ending { position:absolute; top:var(--ri-cta-top,68%); inset-inline:0; width:auto; padding:0 16px 24px; opacity:0; visibility:hidden; transform:translateY(16px); pointer-events:none; transition:opacity .6s ease-out,transform .6s ease-out,visibility 0s .6s; }
.intro-active .intro-ending.is-visible { opacity:1; visibility:visible; transform:none; pointer-events:auto; transition-delay:0s; }
.intro-active .intro-ending > :is(.tagline,h1,.lead) { display:none; }
.intro-active .intro-ending .actions { margin-top:0; }
.intro-active .replay { margin-top:12px; font-size:16px; }
.intro-active .ri-ctrl { bottom:80px; }

/* ── 사진 히어로 ── */
.photo-hero { min-height:92svh; display:flex; align-items:end; position:relative; isolation:isolate; color:var(--white); background:var(--char); overflow:clip; }
.photo-hero::before { content:""; position:absolute; inset:0; z-index:-2; background-size:cover; background-position:center; }
/* 사진 주소는 이 CSS 파일 기준이다(CSS 변수로 넘기면 site.css 기준으로 풀려 404가 난다) */
.photo-hero.hero-explore::before { background-image:url('../img/classroom.webp'); }
.photo-hero.hero-make::before { background-image:url('../img/make-desk.webp'); background-position:center 40%; }
.photo-hero::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(100deg,#141413ee 0%,#141413c4 46%,#14141350 100%),linear-gradient(0deg,#141413cc 0%,#14141300 45%); }
.photo-hero .hero-content { padding-block:170px 88px; width:100%; }
.photo-hero h1 { max-inline-size:15em; }
.photo-hero .split-title > span { color:#C9C5BD; }
.hero-bottom { margin-top:28px; }
.hero-bottom > div { max-inline-size:40em; }
.hero-bottom .lead { margin-top:0; color:#E6E3DC; }
.hero-bottom .copy-points { color:#E6E3DC; }

/* ── 살펴보기: 기능 넷 한눈에 ── */
.overview { padding-bottom:clamp(40px,6vw,72px); }
.feature-bento { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px; }
.bento-card { display:flex; flex-direction:column; border-radius:var(--radius); overflow:clip; background:var(--white); color:var(--char); text-decoration:none; box-shadow:0 1px 0 var(--line); transition:transform .25s,box-shadow .25s; }
.bento-card img { width:100%; aspect-ratio:16/10; object-fit:cover; background:var(--paper-2); }
.bento-body { display:flex; flex-direction:column; gap:8px; padding:20px 22px 22px; flex:1; }
.bento-num { color:var(--clay-deep); font-weight:800; font-variant-numeric:tabular-nums; }
.bento-title { font-size:clamp(1.15rem,1.5vw,1.35rem); font-weight:800; letter-spacing:-.03em; line-height:1.3; text-wrap:balance; }
.bento-desc { color:var(--mute); font-size:16px; line-height:1.6; text-wrap:pretty; }
.bento-go { display:inline-flex; align-items:center; gap:6px; margin-top:auto; padding-top:10px; font-weight:700; font-size:16px; color:var(--tide); }
.bento-go .icon { width:18px; height:18px; }
.bento-card:hover { transform:translateY(-4px); box-shadow:var(--shadow); }

/* ── 살펴보기: 기능별 구역 ── */
.features { display:grid; gap:clamp(20px,3vw,32px); padding-bottom:clamp(72px,9vw,128px); }
.feature-panel { display:grid; grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr); align-items:center; gap:clamp(28px,5vw,72px); padding:clamp(24px,4.5vw,64px); border-radius:var(--panel-radius); background:var(--white); scroll-margin-top:96px; }
.feature-panel.reverse { grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr); }
.feature-panel.reverse .feature-copy { order:2; }
.feature-panel.is-dark { background:var(--char); color:var(--paper); }
/* 체험 중에는 설명을 위에, 체험 화면을 구역 전체 폭으로 둔다. */
.feature-panel.is-trying { grid-template-columns:minmax(0,1fr); align-items:start; }
.feature-panel.is-trying .feature-copy { order:0; }
.feature-panel.is-trying .feature-copy .lead { max-inline-size:none; }
.feature-index { margin:0 0 18px; color:var(--mute); font-variant-numeric:tabular-nums; }
.feature-index strong { color:var(--clay-deep); font-size:1.5em; font-weight:850; margin-inline-end:2px; }
.feature-copy h2 { font-size:clamp(1.9rem,3.4vw,3rem); }
.feature-copy .lead { font-size:clamp(1.05rem,1.4vw,1.2rem); color:var(--mute); }
.ex-a { color:var(--clay); }
.feature-copy { container-type:inline-size; }
.feature-copy .etym-title { display:grid; gap:.06em; font-size:clamp(1.6rem,2.6vw,2.4rem); font-size:clamp(1.6rem,8cqi,2.6rem); }
.et-line { display:block; }
.et-en { display:inline-block; margin-inline-start:.18em; font-size:max(16px,.56em); font-weight:700; letter-spacing:-.01em; vertical-align:.12em; }
.check-list { display:grid; gap:10px; padding:0; margin:26px 0 0; list-style:none; }
.check-list li { position:relative; padding-inline-start:30px; font-weight:600; }
.check-list li::before { content:""; position:absolute; left:2px; top:.42em; width:16px; height:9px; border-left:2.5px solid var(--tide); border-bottom:2.5px solid var(--tide); transform:rotate(-45deg); }
.is-dark .feature-index { color:var(--night-mute); }
.is-dark .feature-index strong { color:var(--clay); }
.is-dark .split-title > span { color:var(--night-mute); }
.is-dark .feature-copy .lead { color:#D6D2CA; }
.is-dark .check-list li::before { border-color:var(--clay); }
.demo-box { border-radius:var(--radius); background:var(--paper); padding:12px; color:var(--char); }
.is-dark .demo-box { background:var(--char-2); color:var(--paper); }
.demo-tabs { display:flex; align-items:center; gap:6px; padding:4px 4px 12px; }
.demo-tabs button { background:transparent; color:inherit; opacity:.7; min-height:44px; padding:10px 22px; border-radius:999px; }
.demo-tabs button[aria-selected="true"] { background:var(--char); color:var(--white); opacity:1; }
.is-dark .demo-tabs button[aria-selected="true"] { background:var(--paper); color:var(--char); }
.demo-panel { position:relative; }
.demo-view { position:relative; aspect-ratio:16/9; width:100%; background:var(--paper-2); border-radius:12px; overflow:clip; }
.demo-view > img,.demo-view > video,.demo-view > iframe { width:100%; height:100%; object-fit:cover; border:0; }
.demo-view > video { object-fit:contain; background:var(--char); }
/* 체험 화면은 1280×720으로 띄우고 상자 너비에 맞춰 통째로 줄인다(site.js가 --demo-scale을 넣는다). */
.demo-view > iframe.demo-frame { position:absolute; left:0; top:0; width:1280px; height:720px; max-width:none; transform:scale(var(--demo-scale,.5)); transform-origin:0 0; }
.demo-cover { position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px; padding:20px; background:#141413a8; color:var(--white); text-align:center; }
.demo-cover p { margin:0; }
.demo-help { margin:12px 8px 4px; font-size:16px; opacity:.75; }
.demo-hint { opacity:1; font-weight:600; }
.demo-hint::before { content:"해 보기"; display:inline-block; margin-inline-end:8px; padding:1px 9px; border-radius:999px; background:var(--clay); color:var(--char); font-size:15px; font-weight:750; vertical-align:1px; }
.demo-controls { display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between; margin:12px 8px 4px; }
.demo-controls button { min-height:44px; border-radius:999px; padding:10px 20px; background:var(--char); color:var(--white); }
.is-dark .demo-controls button { background:var(--paper); color:var(--char); }

/* 마지막 기능에서 제작하기로 이어지는 띠 */
.next-step { display:grid; grid-template-columns:auto minmax(0,1fr) auto; grid-template-areas:"label title go" "label desc go"; align-items:center; column-gap:clamp(16px,3vw,40px); row-gap:4px; padding:clamp(24px,3.5vw,40px) clamp(24px,4.5vw,64px); border-radius:var(--panel-radius); background:var(--clay); color:var(--char); text-decoration:none; transition:background .2s; }
.next-step:hover { background:#E3896B; }
.next-label { grid-area:label; padding:6px 14px; border-radius:999px; background:#1414131a; font-weight:700; font-size:16px; }
.next-title { grid-area:title; font-size:clamp(1.4rem,2.4vw,2rem); font-weight:850; letter-spacing:-.03em; line-height:1.25; text-wrap:balance; }
.next-desc { grid-area:desc; font-size:17px; text-wrap:pretty; }
.next-go { grid-area:go; display:inline-flex; align-items:center; gap:10px; min-height:52px; padding:12px 24px; border-radius:999px; background:var(--char); color:var(--white); font-weight:700; }

/* ── 제작하기: 세 단계 ── */
.make-steps { list-style:none; margin:0; padding:0; display:grid; gap:clamp(20px,3vw,28px); }
.make-step { padding:clamp(22px,4vw,48px); border-radius:var(--panel-radius); background:var(--white); }
.step-head { display:grid; grid-template-columns:auto minmax(0,1fr); gap:clamp(14px,2.4vw,24px); align-items:start; }
.step-num { display:grid; place-items:center; width:48px; height:48px; border-radius:50%; background:var(--char); color:var(--white); font-weight:800; font-size:20px; font-variant-numeric:tabular-nums; }
.step-head h3 { margin:6px 0 10px; }
.step-head p { margin:0; color:var(--mute); max-inline-size:40em; font-size:18px; }
.hl { color:#A84D2D; font-weight:750; }
.ai-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; margin-top:28px; }
.ai-card { display:flex; flex-direction:column; gap:16px; padding:22px; border-radius:var(--radius); background:var(--paper); }
.ai-card h4 { display:flex; align-items:center; gap:10px; font-size:1.35rem; }
.ai-card .ai-rec { margin:-6px 0 0; color:#57564F; font-size:16px; line-height:1.55; text-wrap:pretty; }
.ai-card .ai-rec b { display:inline-block; margin-right:6px; padding:1px 8px; border-radius:999px; background:var(--white); color:var(--ai-text); font-size:14px; font-weight:800; }
.ai-logo { width:28px; height:28px; flex:none; }
.ai-card[data-ai="chatgpt"] { --ai:#0D0D0D; --ai-ink:#FFFFFF; --ai-text:#0D0D0D; --ai-bg:linear-gradient(#0D0D0D,#0D0D0D); }
.ai-card[data-ai="gemini"] { --ai:#1B66C9; --ai-ink:#FFFFFF; --ai-text:#1B5FBF; --ai-bg:linear-gradient(90deg,#1B66C9,#7E57C2); }
.ai-card[data-ai="claude"] { --ai:#D97757; --ai-ink:#141413; --ai-text:#A84D2D; --ai-bg:linear-gradient(#D97757,#D97757); }
.ai-card .ai-web { background:var(--ai-bg); color:var(--ai-ink); }
.ai-card .ai-web:hover { filter:brightness(1.08); background:var(--ai-bg); }
.ai-card .ai-app { background:var(--white); color:var(--ai-text); box-shadow:inset 0 0 0 1.5px var(--ai); }
.ai-card .ai-app:hover { background:var(--white); box-shadow:inset 0 0 0 2.5px var(--ai); }
.ai-actions { display:grid; gap:10px; }
.ai-actions .button { width:100%; }
.ai-status { min-height:1.7em; margin:18px 0 0; color:var(--tide); font-weight:600; }
.ai-status a { color:var(--clay-deep); font-weight:700; }
.prompt-box { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:16px 24px; margin-top:24px; padding:22px 24px; border-radius:var(--radius); background:var(--char); color:var(--white); }
.prompt-box code { flex:1 1 22rem; font-family:var(--font); font-size:17px; line-height:1.7; }
.prompt-box button { display:inline-flex; align-items:center; gap:10px; min-height:48px; padding:12px 20px; border-radius:999px; background:var(--clay); color:var(--char); font-weight:700; }
.copy-count { font-size:16px; color:var(--mute); margin:12px 0 0; font-variant-numeric:tabular-nums; }
.copy-status { min-height:1.7em; margin:8px 0 0; color:var(--tide); font-weight:600; }
.before-after { display:grid; grid-template-columns:minmax(0,1fr) auto minmax(0,1fr); align-items:center; gap:16px; margin-top:28px; }
.ba-item { display:grid; gap:10px; min-inline-size:0; }
.ba-card { position:relative; margin:0; border-radius:var(--radius); overflow:clip; }
.ba-card img { width:100%; aspect-ratio:16/10; object-fit:cover; object-position:top; }
.ba-tag { justify-self:start; padding:5px 14px; border-radius:999px; font-size:16px; font-weight:750; }
.ba-card figcaption { display:grid; gap:4px; padding:16px 20px 18px; }
.ba-card figcaption strong { font-size:18px; }
.ba-card figcaption span { font-size:16px; }
.ba-before .ba-card { background:var(--paper-2); }
.ba-before img { filter:grayscale(.55) contrast(.92); opacity:.9; }
.ba-before .ba-tag { background:#57564F; color:var(--white); }
.ba-before figcaption span { color:var(--mute); }
.ba-after .ba-card { background:var(--char); color:var(--paper); box-shadow:0 0 0 3px var(--clay),var(--shadow); }
.ba-after .ba-tag { background:var(--clay); color:var(--char); }
.ba-after figcaption span { color:#D6D2CA; }
.ba-arrow { display:grid; place-items:center; width:48px; height:48px; border-radius:50%; background:var(--clay); color:var(--char); }
.as-of { margin:10px 0 0 !important; font-size:16px; font-weight:650; color:var(--tide) !important; font-variant-numeric:tabular-nums; }

/* ── 제작하기: 예시와 비교 ── */
.catalog { background:var(--white); }
.section-head { display:flex; align-items:end; justify-content:space-between; gap:24px; flex-wrap:wrap; margin-bottom:28px; }
.section-head > div:first-child { flex:1 1 480px; }
.section-head p { margin:16px 0 0; color:var(--mute); max-inline-size:40em; }
.filters { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:12px; }
.chip { min-height:44px; padding:10px 18px; border-radius:999px; background:var(--paper); color:var(--char); }
.chip[aria-pressed="true"] { background:var(--char); color:var(--white); }
.filter-label { margin:24px 0 8px; font-size:16px; font-weight:650; }
.rail { display:grid; grid-auto-flow:column; grid-auto-columns:calc((100% - 40px)/3); gap:20px; overflow-x:auto; overscroll-behavior-inline:contain; scroll-snap-type:x mandatory; scroll-padding-inline:2px; padding:4px 2px 24px; scrollbar-width:thin; scrollbar-color:var(--tide) var(--paper); }
.rail:focus-visible { outline-offset:0; }
.lesson-card,.compare-card { scroll-snap-align:start; display:flex; flex-direction:column; background:var(--paper); border-radius:var(--radius); overflow:clip; }
.lesson-card img,.compare-card img { width:100%; aspect-ratio:16/9; object-fit:cover; background:#E5E0D5; }
.card-body { padding:24px; display:flex; flex-direction:column; align-items:start; flex:1; gap:14px; container-type:inline-size; }
.card-body h3 { font-size:1.5rem; }
.card-body p { margin:0; }
.card-body .button { margin-top:auto; width:100%; }
.card-meta,.model-badge { font-size:16px; color:var(--mute); }
.model-badge { padding:6px 10px; border-radius:8px; background:var(--white); }
.tag-list { display:flex; flex-wrap:wrap; gap:6px 12px; }
.tag { font-size:16px; color:var(--tide); text-wrap:balance; }
.rail-controls { display:flex; gap:8px; }
.rail-controls button { min-width:48px; min-height:48px; display:grid; place-items:center; background:var(--paper); color:var(--char); border-radius:50%; }
.empty-card { min-height:260px; padding:28px; justify-content:center; background:var(--paper); }
.empty-card h3 { margin-bottom:14px; }
.empty-card p { color:var(--mute); }
.metrics { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; width:100%; margin:0; }
.metrics div { padding-block:8px; border-top:1px solid var(--line); }
.metrics dt { color:var(--mute); font-size:16px; }
.metrics dd { margin:0; font-weight:700; font-variant-numeric:tabular-nums; }
@container (max-width:220px) {
  .metrics { grid-template-columns:1fr; gap:0; }
  .metrics div { display:flex; justify-content:space-between; align-items:baseline; gap:12px; }
}
.comparisons .compare-card { background:var(--white); }
.comparisons .model-badge { background:var(--paper); }
.status-line { color:var(--mute); margin-top:16px; }


/* ── 화면 너비별 ── */
@media (max-width:1100px) { .brand-tagline { display:none; } }
@media (max-width:1023px) {
  .feature-bento { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .rail { grid-auto-columns:calc((100% - 20px)/2); }
}
@media (max-width:899px) {
  .feature-panel,.feature-panel.reverse { grid-template-columns:minmax(0,1fr); }
  .feature-panel.reverse .feature-copy { order:0; }
  .ai-grid { grid-template-columns:minmax(0,1fr); }
  .ai-actions { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .next-step { grid-template-columns:minmax(0,1fr); grid-template-areas:"label" "title" "desc" "go"; justify-items:start; row-gap:10px; }
}
@media (max-width:767px) {
  .site-header { gap:8px; padding-inline:12px; grid-template-columns:auto minmax(0,1fr) auto; }
  .logo { font-size:21px; gap:5px; }
  .logo svg { width:22px; }
  .pill-nav { justify-self:center; gap:0; padding:3px; }
  .pill-nav a { padding:8px 10px; font-size:16px; }
  .join-trigger { padding:10px 13px; font-size:16px; }
  .photo-hero { min-height:86svh; }
  .photo-hero .hero-content { padding-block:132px 48px; }
  .rail { grid-auto-columns:min(86%,22rem); gap:16px; }
  .rail-controls { display:none; }
  .demo-help { margin-inline:4px; }
  .demo-cover { gap:8px; padding:12px; }
  .demo-cover .button { padding:10px 18px; min-height:44px; }
  .before-after { grid-template-columns:minmax(0,1fr); justify-items:stretch; }
  .ba-arrow { justify-self:center; transform:rotate(90deg); }
  .step-head { grid-template-columns:minmax(0,1fr); }
  .step-num { width:40px; height:40px; font-size:18px; }
}
@media (max-width:559px) {
  .feature-bento { grid-template-columns:minmax(0,1fr); }
  .ai-actions { grid-template-columns:minmax(0,1fr); }
  .prompt-box { padding:18px; }
  .prompt-box button { width:100%; justify-content:center; }
}
@media (max-width:399px) {
  .site-header { padding-inline:8px; gap:4px; }
  .logo { font-size:20px; gap:4px; }
  .logo svg { width:18px; }
  .pill-nav a { padding-inline:8px; }
  .join-trigger { padding-inline:10px; }
}
@media (max-width:359px) {
  .logo { font-size:18px; gap:2px; }
  .logo svg { width:12px; }
  .pill-nav a { padding-inline:5px; }
  .join-trigger { padding-inline:8px; }
  .demo-tabs button { padding-inline:16px; }
}
@media (min-width:1600px) { .photo-hero .hero-content { padding-bottom:110px; } }