/* Deftty 사이트. 다크 단일 테마, 앱 기본 테마(#282C34 계열)와 같은 색. 웹폰트 없음. */
:root {
  --bg: #0f1115; --surface: #1a1e25; --term-bg: #282c34;
  --line: rgba(255,255,255,.08); --line-2: rgba(255,255,255,.14);
  --fg: #e6e9ee; --fg-2: #a9b0bc; --fg-3: #848c99;  /* fg-3: 카드 위에서도 4.9:1 */
  --accent: #61afef; --green: #98c379; --amber: #e5c07b;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Apple SD Gothic Neo", "Pretendard Variable", Pretendard, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Monaco, "D2Coding", "JetBrains Mono", monospace;
  --wrap: 1040px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 var(--sans); overflow-wrap: anywhere; -webkit-font-smoothing: antialiased; }
:lang(ko) { word-break: keep-all; }
a { color: inherit; text-decoration: none; }
img, video, svg { max-width: 100%; }
h1, h2, h3, h4 { letter-spacing: -.02em; line-height: 1.2; margin: 0; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 720px; }
.center { text-align: center; }
.skip { position: absolute; left: -999px; top: 12px; background: #fff; color: #111; padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; }
.eyebrow { font: 600 12.5px/1 var(--mono); color: var(--fg-3); letter-spacing: .06em; margin: 0 0 14px; }
.lead { color: var(--fg-2); font-size: 18px; line-height: 1.7; }

/* 버튼 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 18px; border-radius: 10px; border: 1px solid var(--line-2); font-weight: 600; font-size: 15px; color: var(--fg); background: transparent; transition: background .15s, border-color .15s, transform .15s; white-space: nowrap; }
.btn:hover { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.24); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: #fff; color: #111; border-color: #fff; }
.btn-primary:hover { background: #e9ebef; border-color: #e9ebef; }
.btn-lg { padding: 15px 26px; font-size: 17px; border-radius: 12px; }
.btn-sm { padding: 7px 14px; font-size: 14px; border-radius: 8px; }
.btn .arrow { opacity: .6; }

/* 상단 내비 */
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(140%) blur(14px); -webkit-backdrop-filter: saturate(140%) blur(14px); background: rgba(15,17,21,.92); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.brand svg { width: 26px; height: 26px; border-radius: 7px; flex: none; }
.nav-links { display: flex; gap: 22px; color: var(--fg-2); font-size: 15px; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--fg); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.lang { color: var(--fg-2); font-size: 14px; }
.lang:hover { color: var(--fg); }

/* 히어로 */
.hero { padding: 80px 0 16px; text-align: center; position: relative; }
.hero::before { content: ""; position: absolute; inset: -60px 0 auto; height: 520px; background: radial-gradient(60% 60% at 50% 0%, rgba(97,175,239,.10), transparent 70%); pointer-events: none; }
.hero > * { position: relative; }
.hero-icon { width: 88px; height: 88px; border-radius: 20px; box-shadow: 0 12px 40px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.08); }
.hero h1 { font-size: clamp(34px, 6vw, 62px); font-weight: 800; margin: 26px auto 18px; max-width: 20ch; }
.hero .lead { max-width: 600px; margin: 0 auto 30px; font-size: clamp(17px, 2vw, 19px); }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-meta { margin: 18px 0 0; color: var(--fg-3); font: 13.5px var(--mono); }
.hero-meta span + span::before { content: "·"; margin: 0 10px; opacity: .6; }
.hero-shot { margin: 52px auto 0; max-width: 940px; }

/* 창 프레임(앱 흉내) */
.window { background: var(--term-bg); border-radius: 12px; border: 1px solid var(--line-2); box-shadow: 0 30px 90px rgba(0,0,0,.6), 0 0 0 1px rgba(0,0,0,.4); overflow: hidden; }
.window-bar { height: 38px; display: flex; align-items: center; padding: 0 14px; gap: 8px; background: #21252b; border-bottom: 1px solid rgba(0,0,0,.35); position: relative; }
.window-bar i { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; }
.window-bar i:nth-child(2) { background: #febc2e; } .window-bar i:nth-child(3) { background: #28c840; }
.window-bar span { position: absolute; left: 0; right: 0; text-align: center; font-size: 13px; color: var(--fg-2); pointer-events: none; }

/* 장면 자리(스켈레톤/미디어) */
.shot { margin: 0; }
.shot-frame { aspect-ratio: var(--aspect, 16/10); background: var(--term-bg); border-radius: 10px; overflow: hidden; border: 1px solid var(--line); position: relative; }
.shot video, .shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.window .shot-frame { border-radius: 0; border: 0; }
/* 실제 캡처(타이틀바·그림자 포함 PNG)가 들어오면 가짜 창 테두리는 숨긴다 */
.window:has(.shot.has-media) { background: transparent; border: 0; box-shadow: none; overflow: visible; }
.window:has(.shot.has-media) .window-bar { display: none; }
.window:has(.shot.has-media) .shot-frame { background: transparent; aspect-ratio: auto; }
.window:has(.shot.has-media) img { height: auto; object-fit: contain; }
figcaption { color: var(--fg-3); font-size: 14px; margin-top: 12px; text-align: center; }
.shot-skel { position: absolute; inset: 0; display: flex; }
.skel-rail { width: 9%; background: #21252b; border-right: 1px solid rgba(255,255,255,.06); display: flex; flex-direction: column; align-items: center; gap: 10%; padding-top: 12%; }
.skel-rail b { width: 46%; aspect-ratio: 1; border-radius: 22%; background: rgba(255,255,255,.08); }
.skel-rail b:first-child { background: rgba(97,175,239,.5); }
.skel-main { flex: 1; display: flex; flex-direction: column; }
.skel-tabs { height: 9%; display: flex; gap: 6px; padding: 1.2%; background: #21252b; border-bottom: 1px solid rgba(255,255,255,.06); }
.skel-tabs b { width: 18%; border-radius: 6px; background: rgba(255,255,255,.07); }
.skel-tabs b:first-child { background: rgba(255,255,255,.16); }
.skel-body { flex: 1; padding: 5% 4%; display: flex; flex-direction: column; gap: 3.4%; }
.skel-body i { display: block; height: 3%; min-height: 6px; border-radius: 4px; background: rgba(255,255,255,.10); animation: skel 2.6s ease-in-out infinite; }
.skel-body i:first-child { background: rgba(97,175,239,.35); }
@keyframes skel { 0%, 100% { opacity: .5; } 50% { opacity: 1; } }
.skel-label { position: absolute; right: 12px; bottom: 10px; font: 12px var(--mono); color: var(--fg-3); background: rgba(0,0,0,.4); padding: 4px 8px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { .skel-body i { animation: none; } html { scroll-behavior: auto; } }

/* 섹션: 기능 목록·질문 */
.section { padding: 64px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-title { font-size: 13px; font-weight: 600; color: var(--fg-3); letter-spacing: .06em; font-family: var(--mono); margin: 0 0 28px; }
.features { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 48px; }
.features h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.features p { margin: 0; color: var(--fg-2); font-size: 15.5px; line-height: 1.65; }
.features code { font: 0.9em var(--mono); background: rgba(255,255,255,.07); padding: 1px 6px; border-radius: 5px; color: var(--fg); }
.faq { max-width: 720px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 16px 44px 16px 0; font-weight: 600; font-size: 16px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 11px; font: 300 26px/1 var(--mono); color: var(--fg-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 18px; color: var(--fg-2); font-size: 15.5px; }
.faq a { color: var(--accent); }
.faq code { font: 0.9em var(--mono); background: rgba(255,255,255,.07); padding: 1px 6px; border-radius: 5px; }

/* 푸터 */
.footer { border-top: 1px solid var(--line); padding: 44px 0 36px; color: var(--fg-3); font-size: 14px; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: start; }
.footer-brand p { margin: 12px 0 0; line-height: 1.6; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; padding-top: 4px; }
.footer-links a:hover, .footer-copy a:hover { color: var(--fg); }
.footer-copy { grid-column: 1 / -1; margin: 8px 0 0; }

/* 문서 */
.docs { display: grid; grid-template-columns: 216px minmax(0, 1fr) 200px; gap: 48px; padding-top: 40px; padding-bottom: 96px; }
.docs-side { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; }
.docs-menu summary { list-style: none; cursor: pointer; }
.docs-menu summary::-webkit-details-marker { display: none; }
.docs-menu-current { display: none; }
@media (min-width: 901px) { .docs-menu summary { display: none; } }
.docs-group-title { font: 600 11.5px var(--mono); color: var(--fg-3); letter-spacing: .08em; margin: 20px 0 8px; }
.docs-group:first-child .docs-group-title { margin-top: 4px; }
.docs-group ul { list-style: none; padding: 0; margin: 0; }
.docs-group a { display: block; padding: 6px 10px; border-radius: 6px; color: var(--fg-2); font-size: 14.5px; }
.docs-group a:hover { background: rgba(255,255,255,.05); color: var(--fg); }
.docs-group a[aria-current] { color: var(--fg); background: rgba(97,175,239,.12); }
.docs-main { min-width: 0; }
.docs-main h1 { font-size: clamp(30px, 4vw, 38px); font-weight: 800; margin: 4px 0 12px; }
.docs-main .lead { font-size: 17px; margin: 0 0 28px; }
.docs-toc { position: sticky; top: 84px; align-self: start; font-size: 13.5px; }
.docs-toc-title { font: 600 11.5px var(--mono); color: var(--fg-3); letter-spacing: .08em; margin: 4px 0 10px; }
.docs-toc ul { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--line); }
.docs-toc li a { display: block; padding: 4px 12px; color: var(--fg-3); border-left: 1px solid transparent; margin-left: -1px; }
.docs-toc li a:hover { color: var(--fg); border-left-color: var(--fg-2); }
.docs-toc .toc-3 a { padding-left: 24px; }
.docs-updated { color: var(--fg-3); font-size: 13px; margin: 44px 0 0; }
.docs-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.docs-pager a { border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; transition: border-color .15s; }
.docs-pager a:hover { border-color: var(--line-2); }
.docs-pager small { color: var(--fg-3); font-size: 12px; }
.docs-pager span { font-weight: 600; font-size: 15px; }
.pager-next { text-align: right; }

/* 본문 서식 */
.prose { font-size: 16px; line-height: 1.75; }
.prose > :first-child { margin-top: 0; }
.prose h2 { font-size: 23px; margin: 44px 0 12px; padding-top: 4px; }
.prose h3 { font-size: 18px; margin: 30px 0 10px; }
.prose .anchor { color: inherit; text-decoration: none; }
.prose h2:hover .anchor::after, .prose h3:hover .anchor::after { content: " #"; color: var(--fg-3); font-weight: 400; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 14px; }
.prose li { margin: 4px 0; }
.prose li > p { margin: 0; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(97,175,239,.35); }
.prose a:hover { text-decoration-color: var(--accent); }
.prose strong { color: var(--fg); font-weight: 600; }
.prose code { font: 0.88em var(--mono); background: rgba(255,255,255,.07); padding: 2px 6px; border-radius: 5px; }
.prose pre { margin: 0; padding: 14px 16px; overflow-x: auto; font: 13.5px/1.6 var(--mono); background: var(--term-bg) !important; }
.prose pre code { background: none; padding: 0; font: inherit; }
.code { position: relative; border: 1px solid var(--line); border-radius: 10px; margin: 0 0 18px; overflow: hidden; }
.code-lang { position: absolute; right: 10px; top: 7px; font: 11px var(--mono); color: var(--fg-2); }
kbd { font: 12.5px var(--mono); color: var(--fg); background: #2a2f38; border: 1px solid rgba(255,255,255,.14); border-bottom-width: 2px; border-radius: 6px; padding: 1px 7px; white-space: nowrap; vertical-align: 1px; }
.callout { border-left: 3px solid var(--accent); background: rgba(97,175,239,.08); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 0 0 18px; }
.callout p:last-child { margin: 0; }
.callout-warn { border-color: var(--amber); background: rgba(229,192,123,.08); }
.callout-tip { border-color: var(--green); background: rgba(152,195,121,.08); }
.prose blockquote { border-left: 3px solid var(--line-2); margin: 0 0 18px; padding: 4px 16px; color: var(--fg-2); }
.prose .shot { margin: 22px 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.prose img { border-radius: 10px; }
.table-wrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { color: var(--fg-3); font-weight: 600; font-size: 13px; letter-spacing: .02em; background: rgba(255,255,255,.02); white-space: nowrap; }
.prose td code, .prose th code { white-space: nowrap; }
.prose td:first-child { white-space: nowrap; }

/* 404 */
.page-404 main { padding: 120px 0; }
.page-404 h1 { font-size: 40px; font-weight: 800; margin-bottom: 12px; }
.page-404 .btn { margin: 8px 4px 0; }

/* 반응형 */
@media (max-width: 1100px) { .docs { grid-template-columns: 210px minmax(0, 1fr); } .docs-toc { display: none; } }
@media (max-width: 900px) {
  .docs { grid-template-columns: 1fr; gap: 24px; padding-top: 24px; }
  .docs-side { position: static; max-height: none; overflow: visible; }
  .docs-menu { border: 1px solid var(--line); border-radius: 10px; padding: 0 14px; background: var(--surface); }
  .docs-menu summary { padding: 12px 0; display: flex; justify-content: space-between; align-items: center; gap: 12px; font-weight: 600; }
  .docs-menu summary::after { content: "▾"; color: var(--fg-3); font-size: 12px; }
  .docs-menu[open] summary::after { content: "▴"; }
  .docs-menu-current { display: inline; color: var(--fg-3); font-weight: 400; font-size: 14px; margin-left: auto; }
  .docs-menu nav { padding-bottom: 12px; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 700px) { .features { grid-template-columns: 1fr; gap: 22px; } }
@media (max-width: 380px) { .nav-links a:nth-child(2) { display: none; } .btn-sm { padding: 7px 11px; } }
@media (max-width: 600px) {
  .wrap { padding: 0 18px; }
  .nav-inner { gap: 16px; }
  .nav-links { gap: 14px; font-size: 14px; }
  .nav-right { gap: 12px; }
  .brand span { display: none; }
  .section { padding: 52px 0; }
  .hero { padding-top: 52px; }
  .hero-icon { width: 76px; height: 76px; border-radius: 17px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-meta span { display: block; } .hero-meta span + span::before { content: none; }
  .docs-pager { grid-template-columns: 1fr; }
  .pager-next { text-align: left; }
  .prose td:first-child { white-space: normal; }
}