:root {
  --paper: #F4F5F2;
  --ink: #191C1A;
  --ink-soft: #4A4F4B;
  --celadon: #2F5D51;
  --celadon-deep: #234439;
  --hairline: #D9DCD6;
  --seal: #9E3B2C;
  --serif: 'MaruBuri', 'Noto Serif KR', serif;
  --serif-semi: 'MaruBuriSemiBold', 'MaruBuri', serif;
  --sans: 'IBM Plex Sans KR', 'Apple SD Gothic Neo', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--celadon); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--celadon-deep); }
:focus-visible { outline: 2px solid var(--celadon); outline-offset: 3px; }

em { font-style: normal; font-family: var(--serif-semi); }
b { font-weight: 600; }

/* ---------- header ---------- */

.site-header {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px 24px;
}

.wordmark { text-decoration: none; display: flex; align-items: baseline; gap: 10px; }
.wordmark-ko { font-family: var(--serif-semi); font-size: 20px; color: var(--ink); letter-spacing: 0.06em; }
.wordmark-en { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); letter-spacing: 0.22em; }

.site-header nav { display: flex; gap: 26px; align-items: center; }
.site-header nav a {
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.site-header nav a:hover { border-bottom-color: var(--ink); }

/* ---------- hero ---------- */

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 24px 120px;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 24px;
}

.hero-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding-top: 10px;
}

.spine {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.42em;
  color: var(--ink-soft);
}

.seal {
  writing-mode: vertical-rl;
  background: var(--seal);
  color: var(--paper);
  font-family: var(--serif-semi);
  font-size: 12px;
  letter-spacing: 0.18em;
  padding: 12px 7px;
  border-radius: 2px;
}

.hero-rail--en .spine { font-size: 17px; letter-spacing: 0.2em; }
.hero-rail--en .seal { letter-spacing: 0.22em; padding: 12px 8px; }

.hero-eyebrow, .section-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--celadon);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--serif-semi);
  font-weight: normal;
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.36;
  letter-spacing: -0.005em;
  max-width: 17em;
}

.hero-lede {
  margin-top: 32px;
  max-width: 33em;
  color: var(--ink-soft);
}

.hero-meta {
  margin-top: 44px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
}

/* hero load sequence — the page's single orchestrated motion */
@media (prefers-reduced-motion: no-preference) {
  .hero-rail, .hero-eyebrow, .hero h1, .hero-lede, .hero-meta {
    opacity: 0;
    transform: translateY(10px);
    animation: rise 0.7s cubic-bezier(0.2, 0.6, 0.2, 1) forwards;
  }
  .hero-rail { transform: translateY(-14px); animation-delay: 0.5s; }
  .hero-eyebrow { animation-delay: 0.05s; }
  .hero h1 { animation-delay: 0.15s; }
  .hero-lede { animation-delay: 0.3s; }
  .hero-meta { animation-delay: 0.45s; }
  @keyframes rise { to { opacity: 1; transform: translateY(0); } }
}

/* ---------- sections ---------- */

section { scroll-margin-top: 24px; }

.apps, .principles, .contact {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.apps h2, .principles h2, .contact h2, .section-sub {
  font-family: var(--serif-semi);
  font-weight: normal;
  font-size: clamp(26px, 3.4vw, 36px);
  margin-bottom: 64px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline);
}

.section-sub { margin-top: 120px; }
@media (max-width: 640px) {
  .section-sub { margin-top: 88px; }
}

/* ---------- app rows ---------- */

.app-row {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
}
.app-row + .app-row { margin-top: 110px; }
.app-row--flip .app-gallery,
.app-row--flip .gallery-pending { order: 2; }
.app-row--flip .app-info { order: 1; }

/* ---------- app gallery (screenshot carousel) ---------- */

.app-gallery {
  justify-self: center;
  width: min(300px, 76vw);
}

.gallery-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}
.gallery-track::-webkit-scrollbar { display: none; }
.gallery-track:focus-visible { outline: 2px solid var(--celadon); outline-offset: 8px; }

.gallery-slide {
  flex: 0 0 100%;
  scroll-snap-align: center;
  scroll-snap-stop: always;
}
.gallery-slide img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 34px;
  border: 1px solid var(--hairline);
  box-shadow: 0 24px 48px -28px rgba(25, 28, 26, 0.35);
}
.app-video {
  justify-self: center;
  width: min(300px, 76vw);
}
.app-video video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
  border-radius: 34px;
  border: 1px solid var(--hairline);
  box-shadow: 0 24px 48px -28px rgba(25, 28, 26, 0.35);
  background: var(--paper);
}
.gallery-caption {
  margin-top: 14px;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* controls appear only once gallery.js has wired them up */
.gallery-controls {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}
.app-gallery.is-ready .gallery-controls { display: flex; }

.gallery-nav {
  appearance: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.gallery-nav svg { width: 12px; height: 12px; }
[dir="rtl"] .gallery-nav svg { transform: scaleX(-1); }
.gallery-nav:hover:not(:disabled) { border-color: var(--celadon); color: var(--celadon); }
.gallery-nav:disabled { opacity: 0.28; cursor: default; }

.gallery-dots { display: flex; }
.gallery-dot {
  appearance: none;
  width: 24px;
  height: 24px;
  padding: 0;
  display: grid;
  place-items: center;
  background: none;
  border: 0;
  cursor: pointer;
}
.gallery-dot::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--ink-soft);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.gallery-dot:hover::before { border-color: var(--celadon); }
.gallery-dot[aria-current="true"]::before {
  background: var(--celadon);
  border-color: var(--celadon);
}

@media (prefers-reduced-motion: no-preference) {
  .gallery-track { scroll-behavior: smooth; }
}

.app-icon { border-radius: 14px; margin-bottom: 22px; }

.app-kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--celadon);
}

.app-info h3 {
  font-family: var(--serif-semi);
  font-weight: normal;
  font-size: 30px;
  margin-top: 6px;
}

.app-tagline {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink-soft);
  margin-top: 2px;
}

.app-desc { margin-top: 18px; max-width: 30em; color: var(--ink-soft); }

.app-features { list-style: none; margin-top: 26px; max-width: 30em; }
.app-features li {
  padding: 12px 0;
  border-top: 1px solid var(--hairline);
  font-size: 15.5px;
  color: var(--ink-soft);
}
.app-features li:last-child { border-bottom: 1px solid var(--hairline); }
.app-features b {
  color: var(--ink);
  margin-right: 14px;
}

.store-link { display: inline-block; margin-top: 30px; margin-right: 12px; transition: opacity 0.15s ease; }
[dir="rtl"] .store-link { margin-right: 0; margin-left: 12px; }
.store-link:hover { opacity: 0.75; }
.store-link img { display: block; height: 44px; width: auto; }

/* ---------- principles ---------- */

.principles dl { max-width: 720px; }
.principle {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid var(--hairline);
}
.principle:last-child { border-bottom: 1px solid var(--hairline); }
.principle dt {
  font-family: var(--serif-semi);
  font-size: 19px;
}
.principle dd { color: var(--ink-soft); }

/* ---------- contact ---------- */

.contact p { max-width: 30em; color: var(--ink-soft); }
.contact-mail {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 19px;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 44px 24px 64px;
}
.site-footer .biz {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}
.site-footer .footer-links {
  max-width: 1080px;
  margin: 14px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font-size: 12.5px;
}
.site-footer .footer-links a { color: var(--ink-soft); }

.site-footer .legal {
  max-width: 1080px;
  margin: 20px auto 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .app-row, .app-row--flip { grid-template-columns: 1fr; }
  .app-row--flip .app-gallery,
  .app-row--flip .gallery-pending { order: 1; }
  .app-row--flip .app-info { order: 2; }
  .app-gallery, .gallery-pending { justify-self: start; }
  .app-row + .app-row { margin-top: 88px; }
  .principle { grid-template-columns: 1fr; gap: 6px; }
}

@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; padding-bottom: 88px; }
  .hero-rail {
    flex-direction: row;
    align-items: center;
    order: 2;
    margin-top: 48px;
    padding-top: 0;
  }
  .spine { writing-mode: horizontal-tb; letter-spacing: 0.3em; font-size: 16px; }
  .seal { padding: 10px 6px; }
  .site-header { padding: 20px 24px; }
  .site-header nav { gap: 18px; }
  .site-header nav a { font-size: 14px; }
  .wordmark-ko { font-size: 18px; }
  .wordmark-en { display: none; }
  .hero-meta { font-size: 12px; }
  .apps, .principles, .contact { padding-bottom: 88px; }
}

/* 스크린샷 준비 전 앱의 캐러셀 자리표시 (2026-08-15) */
.gallery-pending {
  justify-self: center;
  width: min(300px, 76vw);
}
.pending-frame {
  aspect-ratio: 720 / 1561;
  border-radius: 34px;
  border: 1px dashed var(--hairline);
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 18px;
  padding: 0 28px;
  text-align: center;
}
.pending-frame .dots { display: flex; gap: 7px; align-items: center; }
.pending-frame .dots i {
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
}
.pending-frame .dots i:nth-child(2) { opacity: .55; }
.pending-frame .dots i:nth-child(3) { opacity: .32; }
.pending-frame .dots i:nth-child(4) { opacity: .16; }
.pending-note {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 앱 카드 → 상세 페이지 진입 링크 (2026-08-05) */
.app-more { margin: .9rem 0 .2rem; }
.app-more a { color: var(--accent, #9E3B2C); text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 1px; }
.app-more a:hover { opacity: .75; }

/* ---------- catalog (앱 도록) ---------- */

ol.catalog { list-style: none; border-top: 1px solid var(--hairline); }
ol.catalog li { border-bottom: 1px solid var(--hairline); }

a.catalog-row {
  display: grid;
  grid-template-columns: 44px 1fr auto 24px;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  text-decoration: none;
  color: var(--ink);
}
.catalog-icon { grid-column: 1; grid-row: 1 / 3; width: 44px; height: 44px; border-radius: 11px; }
.catalog-name {
  grid-column: 2; grid-row: 1;
  font-family: var(--serif-semi);
  font-size: 20px;
  transition: color 0.16s ease;
}
.catalog-tagline { grid-column: 2; grid-row: 2; color: var(--ink-soft); font-size: 15px; }
.catalog-kicker {
  grid-column: 3; grid-row: 1 / 3;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  text-transform: uppercase;
  white-space: nowrap;
}
.catalog-arrow {
  grid-column: 4; grid-row: 1 / 3;
  font-family: var(--mono);
  color: var(--ink-soft);
  transition: transform 0.16s ease;
}
a.catalog-row:hover .catalog-name { color: var(--celadon); }
a.catalog-row:hover .catalog-arrow { transform: translateX(4px); }

@media (prefers-reduced-motion: reduce) {
  .catalog-name, .catalog-arrow { transition: none; }
}

@media (max-width: 640px) {
  a.catalog-row { grid-template-columns: 40px 1fr 20px; gap: 14px; padding: 18px 0; }
  .catalog-icon { width: 40px; height: 40px; grid-column: 1; grid-row: 1 / 4; }
  .catalog-name { grid-column: 2; grid-row: 1; font-size: 18px; }
  .catalog-tagline { grid-column: 2; grid-row: 2; font-size: 14px; }
  .catalog-kicker { grid-column: 2; grid-row: 3; text-align: left; text-align: start; margin-top: 4px; font-size: 11px; }
  .catalog-arrow { grid-column: 3; grid-row: 1 / 4; }
}

/* ---------- app page (.appdoc) ---------- */

.appdoc { max-width: 860px; margin: 0 auto; padding: 40px 24px 96px; }
.appdoc .meta { color: var(--ink-soft); font-size: .9rem; }
.appdoc h1 { font-family: var(--serif-semi); font-size: 2rem; margin: .8rem 0 .2rem; }
.appdoc h2 { font-family: var(--serif-semi); font-size: 1.2rem; margin: 2.4rem 0 .7rem; }
.appdoc p, .appdoc li { color: var(--ink-soft); }
.appdoc .tagline { font-family: var(--serif-semi); font-size: 1.1rem; color: var(--ink); }
.appdoc .head { display: flex; gap: 18px; align-items: center; }
.appdoc .head img { border-radius: 18px; }
/* 옛 브라우저(논리 속성 모름)는 padding-left 만 본다. RTL 에선 padding-right 를 직접 주지 않는다 — .features·.guide-cards 의 padding 0 을 덮는다. */
.appdoc ul { padding-left: 1.2rem; padding-inline-start: 1.2rem; }
[dir="rtl"] .appdoc ul { padding-left: 0; }
.appdoc .modes, .appdoc .features { list-style: none; padding: 0; display: grid; gap: .8rem; }
.appdoc .modes li, .appdoc .features li { border: 1px solid var(--hairline); border-radius: 10px; padding: .8rem 1rem; }
.appdoc .modes b, .appdoc .features b { display: block; color: var(--ink); margin-bottom: .2rem; }
.appdoc .shot { max-width: 300px; width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--hairline); }
.appdoc .app-gallery { margin: 0; justify-self: start; }
.appdoc .links { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin: 1rem 0; }
.appdoc .note, .appdoc .support-note { border-left: 2px solid var(--hairline); padding-left: .9rem; }
[dir="rtl"] .appdoc .note, [dir="rtl"] .appdoc .support-note { border-left: 0; padding-left: 0; border-right: 2px solid var(--hairline); padding-right: .9rem; }
.appdoc .faq h3 { font-size: 1rem; margin: 1.4rem 0 .3rem; }

/* ---------- language menu (globe) ---------- */

.topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 1.2rem; }
.lang-menu { position: relative; }
.lang-menu summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border: 1px solid var(--hairline); border-radius: 999px; color: var(--ink-soft); font-size: .85rem; line-height: 1; user-select: none; }
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { color: var(--ink); border-color: var(--ink-soft); }
.lang-menu .globe { stroke: currentColor; fill: none; stroke-width: 1.5; }
.lang-menu ul { position: absolute; right: 0; top: calc(100% + 6px); margin: 0; padding: 4px 0; list-style: none; min-width: 128px; background: var(--paper); border: 1px solid var(--hairline); border-radius: 10px; box-shadow: 0 6px 20px rgba(25,28,26,.08); z-index: 20; }
[dir="rtl"] .lang-menu ul { right: auto; left: 0; }
.lang-menu li { margin: 0; }
.lang-menu li a { display: block; padding: 8px 14px; color: var(--ink); text-decoration: none; font-size: .9rem; }
.lang-menu li a:hover { background: #fff; color: var(--celadon); }
.lang-menu li a[aria-current="page"] { color: var(--celadon); font-family: var(--serif-semi); }
.site-header nav .lang-menu summary { font-size: 14px; }
.site-header nav .lang-menu a { border-bottom: 0; font-size: .9rem; }

/* ---------- guide (.appdoc.guide) ---------- */
/* 사용법 페이지(tools/gen-guide.js 가 만든다). 색은 기존 토큰만, 방향은 논리 속성만 쓴다 — 아랍어는 RTL. */

.guide-nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0 0 1.4rem; padding-block: .6rem; border-block: 1px solid var(--hairline); font-size: .95rem; }
.guide-nav a { color: var(--ink-soft); text-decoration: none; }
.guide-nav a:hover { color: var(--celadon); }
.guide-nav a[aria-current="page"] { color: var(--celadon); font-family: var(--serif-semi); }
.guide-cards { list-style: none; padding: 0; display: grid; gap: .8rem; margin-block: 1.2rem; }
.appdoc .guide-cards { padding-inline-start: 0; }
.guide-cards li { border: 1px solid var(--hairline); border-radius: 10px; padding: .8rem 1rem; }
.guide-cards a { font-family: var(--serif-semi); font-size: 1.05rem; }
.guide-cards p { margin-block-start: .2rem; }
.guide-section h2 { scroll-margin-top: 1rem; }
/* 묶음: 사진 한 칸 + 그 사진을 설명하는 단위들. RTL 에선 grid 가 저절로 뒤집혀 사진이 오른쪽에 온다. */
.guide-group { display: grid; grid-template-columns: 260px 1fr; gap: 1.5rem; padding-block: 1.4rem; border-block-start: 1px solid var(--hairline); align-items: start; }
.guide-group--text { grid-template-columns: 1fr; }
.guide-shot { margin: 0; position: sticky; top: 1rem; display: grid; gap: .8rem; }
/* 두 장 이상은 화면보다 길어 따라 내려오면 아래 사진이 가려진다. */
.guide-shot--multi { position: static; }
.guide-shot img { display: block; width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--hairline); }
/* grid 칸의 기본 최소 폭(auto)은 긴 낱말만큼 넓어져 칸을 밀어낸다 — 0 으로 두어 줄바꿈되게 한다. */
.guide-items { min-width: 0; }
.guide-items .guide-unit + .guide-unit { border-block-start: 1px dashed var(--hairline); padding-block-start: .9rem; margin-block-start: .9rem; }
.guide-unit { scroll-margin-top: 1rem; }
.guide-unit h3 { font-size: 1.02rem; color: var(--ink); margin-block-end: .4rem; }
.guide-num { font-family: var(--mono); color: var(--celadon); margin-inline-end: .45rem; font-size: .92em; }
.guide-unit dl { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; }
.guide-unit dt { color: var(--ink); font-size: .9rem; }
.guide-unit dd { color: var(--ink-soft); }
.guide-unit dd ul { margin: 0; }
.guide-unit dd a { overflow-wrap: anywhere; }
/* 맨 위로: 화면 끝 아래에 떠 있는 알약. guide.js 가 있으면 조금 내려간 뒤에만 보인다(--auto). */
.guide-top { position: fixed; inset-inline-end: 16px; inset-block-end: calc(16px + env(safe-area-inset-bottom, 0px)); z-index: 10; display: inline-flex; align-items: center; gap: .35rem; padding: .5rem .9rem; border: 1px solid var(--hairline); border-radius: 999px; background: var(--paper); color: var(--ink); font-size: .9rem; text-decoration: none; transition: opacity .2s, visibility .2s; }
.guide-top:hover { color: var(--celadon); border-color: var(--celadon); }
.guide-top svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.guide-top--auto:not(.is-shown) { opacity: 0; visibility: hidden; }
@media (prefers-reduced-motion: reduce) { .guide-top { transition: none; } }

@media (max-width: 640px) {
  .guide-group { grid-template-columns: 1fr; }
  .guide-shot { position: static; max-width: 260px; }
  .guide-unit dl { grid-template-columns: 1fr; gap: 0; }
  .guide-unit dt { margin-block-start: .5rem; }
}