@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@500;600;700&display=swap');

:root {
  --nido-ink: #193b35;
  --nido-green: #175c4e;
  --nido-green-dark: #11483e;
  --nido-coral: #e4614d;
  --nido-yellow: #f0ca55;
  --nido-sky: #8cc6d2;
  --nido-paper: #fffdf8;
  --nido-mist: #edf3ef;
  --nido-pink: #f3d4dc;
  --nido-line: #cfd9d3;
  --nido-muted: #60736e;
  --nido-white: #ffffff;
  --shadow-soft: 0 14px 36px rgba(25, 59, 53, 0.1);
  --content: 1240px;
  --editorial: 760px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--nido-paper);
  color: var(--nido-ink);
  font-family: Pretendard, "Noto Sans KR", sans-serif;
  font-size: 16px;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
:focus-visible { outline: 2px solid var(--nido-coral); outline-offset: 3px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 100; background: var(--nido-ink); color: white; padding: 12px 16px; }
.skip-link:focus { top: 12px; }
.container { width: min(var(--content), calc(100% - 48px)); margin: 0 auto; }
.editorial { width: min(var(--editorial), calc(100% - 48px)); margin: 0 auto; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.band { width: 100%; }
.band-mist { background: var(--nido-mist); }
.band-green { background: var(--nido-green); color: var(--nido-white); }
.band-yellow { background: var(--nido-yellow); color: var(--nido-ink); }
.band-sky { background: var(--nido-sky); color: var(--nido-ink); }
.band-pink { background: var(--nido-pink); color: var(--nido-ink); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--nido-green); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 34px; height: 7px; background: var(--nido-coral); }
.eyebrow.light { color: var(--nido-yellow); }
.eyebrow.light::before { background: var(--nido-yellow); }
.display-title { margin: 18px 0 20px; font-size: 58px; line-height: 1.15; font-weight: 900; word-break: keep-all; }
.page-title { margin: 16px 0 18px; font-size: 50px; line-height: 1.18; font-weight: 900; word-break: keep-all; }
.section-title { margin: 0; font-size: 40px; line-height: 1.25; font-weight: 900; word-break: keep-all; }
.section-title.serif { font-family: "Noto Serif KR", serif; font-weight: 700; }
.sub-title { margin: 0; font-size: 26px; line-height: 1.35; font-weight: 850; word-break: keep-all; }
.lede { max-width: 650px; margin: 0; color: #3c554f; font-size: 18px; line-height: 1.75; }
.body-copy { margin: 0; color: #435c56; line-height: 1.75; }
.caption { color: var(--nido-muted); font-size: 12px; line-height: 1.55; }
.text-coral { color: var(--nido-coral); }
.text-yellow { color: var(--nido-yellow); }
.text-white { color: var(--nido-white); }
.section-head { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr); gap: 72px; align-items: end; margin-bottom: 40px; }
.section-head.stack { grid-template-columns: 1fr; gap: 16px; }
.section-head p { margin: 0; font-size: 17px; line-height: 1.75; color: #405851; }
.band-green .section-head p { color: #dce9e5; }
.cluster { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.btn { min-height: 48px; padding: 0 20px; border: 1px solid var(--nido-green); border-radius: 4px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; color: var(--nido-green); background: transparent; text-decoration: none; font-weight: 850; line-height: 1.2; }
.btn-primary { background: var(--nido-coral); border-color: var(--nido-coral); color: var(--nido-white); }
.btn-green { background: var(--nido-green); color: var(--nido-white); }
.btn-yellow { background: var(--nido-yellow); border-color: var(--nido-yellow); color: var(--nido-ink); }
.btn-white { background: var(--nido-white); border-color: var(--nido-white); color: var(--nido-green); }
.btn:disabled, .btn.disabled { opacity: 0.56; background: #dde5e1; border-color: #b9c7c1; color: #60736e; }
.icon-button { width: 44px; height: 44px; padding: 0; border: 0; background: transparent; color: var(--nido-ink); display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; line-height: 0; }
.icon-button > svg, .icon-box > svg { display: block; width: 21px; height: 21px; margin: 0; }
.icon-box { width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; line-height: 0; border: 1px solid currentColor; border-radius: 4px; }

/* Global header */
.site-notice { min-height: 32px; padding: 7px 16px; background: var(--nido-yellow); color: var(--nido-ink); display: flex; align-items: center; justify-content: center; text-align: center; font-size: 12px; font-weight: 850; }
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(255, 253, 248, 0.97); border-bottom: 1px solid var(--nido-line); }
.header-main { height: 76px; display: grid; grid-template-columns: 190px 1fr auto; align-items: center; gap: 28px; }
.site-brand { color: var(--nido-ink); text-decoration: none; font-size: 24px; font-weight: 950; line-height: 1; }
.site-brand small { display: block; margin-top: 4px; color: var(--nido-coral); font-size: 9px; font-weight: 850; }
.desktop-nav { display: flex; justify-content: center; gap: 28px; }
.desktop-nav a { position: relative; padding: 28px 0 26px; color: var(--nido-ink); text-decoration: none; font-size: 14px; font-weight: 800; }
.desktop-nav a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 20px; height: 3px; background: var(--nido-coral); }
.header-actions { display: flex; align-items: center; gap: 4px; }
.cart-button { position: relative; }
.cart-count { position: absolute; top: 3px; right: 2px; min-width: 17px; height: 17px; padding: 0 4px; border-radius: 99px; background: var(--nido-coral); color: white; font-size: 10px; line-height: 17px; text-align: center; }
.header-age { height: 44px; margin-left: 6px; padding: 0 16px; border: 1px solid var(--nido-green); border-radius: 4px; background: var(--nido-green); color: white; text-decoration: none; display: inline-flex; align-items: center; font-size: 13px; font-weight: 850; }
.mobile-menu-button { display: none; }
.mobile-menu { display: none; position: fixed; inset: 108px 0 0; z-index: 39; background: var(--nido-paper); padding: 28px 20px 48px; overflow: auto; }
.mobile-menu.open { display: block; }
.mobile-menu nav { display: grid; }
.mobile-menu nav a { min-height: 56px; border-bottom: 1px solid var(--nido-line); display: flex; align-items: center; justify-content: space-between; text-decoration: none; font-size: 20px; font-weight: 850; }
.mobile-menu nav a::after { content: "→"; color: var(--nido-coral); }
.mobile-menu .btn { width: 100%; margin-top: 26px; }

/* Dialogs, toast */
.site-dialog { width: min(620px, calc(100% - 32px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--nido-ink); border-radius: 4px; background: var(--nido-paper); color: var(--nido-ink); overflow: auto; }
.site-dialog::backdrop { background: rgba(17, 48, 41, 0.62); }
.dialog-head { min-height: 62px; padding: 10px 16px 10px 22px; border-bottom: 1px solid var(--nido-line); display: flex; align-items: center; justify-content: space-between; }
.dialog-head h2 { margin: 0; font-size: 18px; }
.dialog-body { padding: 24px; }
.search-input { width: 100%; height: 54px; padding: 0 16px; border: 1px solid var(--nido-ink); border-radius: 4px; background: white; }
.search-results { display: grid; margin-top: 18px; border-top: 1px solid var(--nido-line); }
.search-results a { min-height: 58px; border-bottom: 1px solid var(--nido-line); display: flex; align-items: center; justify-content: space-between; text-decoration: none; font-weight: 750; }
.search-results a::after { content: "→"; color: var(--nido-coral); }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 90; width: min(420px, calc(100% - 32px)); transform: translate(-50%, 24px); padding: 15px 18px; border-radius: 4px; background: var(--nido-ink); color: white; box-shadow: var(--shadow-soft); opacity: 0; pointer-events: none; transition: opacity 180ms ease, transform 180ms ease; text-align: center; font-size: 14px; font-weight: 700; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Age controls */
.age-rail { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); max-width: 600px; overflow: hidden; border: 1px solid var(--nido-green); border-radius: 4px; }
.age-rail button { min-height: 50px; padding: 8px 10px; border: 0; border-right: 1px solid var(--nido-green); background: transparent; color: var(--nido-green); font-weight: 850; }
.age-rail button:last-child { border-right: 0; }
.age-rail button[aria-pressed="true"] { background: var(--nido-green); color: white; }
.filter-rail { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 10px; scrollbar-width: thin; }
.filter-rail button { min-width: 104px; min-height: 44px; padding: 0 16px; border: 1px solid var(--nido-line); border-radius: 99px; background: white; color: var(--nido-ink); font-weight: 800; white-space: nowrap; }
.filter-rail button[aria-pressed="true"] { background: var(--nido-green); border-color: var(--nido-green); color: white; }
.empty-state { min-height: 260px; margin-top: 26px; padding: 40px 24px; border: 1px dashed var(--nido-line); display: grid; place-items: center; text-align: center; }
.empty-state strong { display: block; margin-bottom: 8px; font-size: 22px; }
.empty-state p { max-width: 500px; margin: 0 auto; color: var(--nido-muted); line-height: 1.7; }

/* Footer */
.site-footer { padding: 64px 0 36px; background: var(--nido-ink); color: white; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 1fr; gap: 60px; }
.footer-brand { font-size: 31px; font-weight: 950; }
.footer-brand small { display: block; margin-top: 10px; color: var(--nido-yellow); font-size: 11px; }
.footer-copy { max-width: 390px; margin-top: 22px; color: #c7d7d2; font-size: 14px; line-height: 1.75; }
.footer-title { margin: 0 0 14px; color: var(--nido-sky); font-size: 12px; font-weight: 850; }
.footer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
.footer-nav a { color: white; text-decoration: none; font-size: 14px; }
.footer-info { color: #c7d7d2; font-size: 13px; line-height: 1.8; }
.footer-info strong { color: white; }
.footer-meta { display: flex; justify-content: space-between; gap: 30px; margin-top: 42px; padding-top: 24px; border-top: 1px solid #4b6760; color: #9fb3ad; font-size: 11px; line-height: 1.6; }
.footer-credit { text-align: right; }

/* Home */
.home-hero { min-height: 650px; display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(460px, 0.96fr); border-bottom: 1px solid var(--nido-line); }
.home-hero-copy { display: flex; align-items: center; }
.home-hero-inner { width: min(615px, calc(100% - 48px)); margin-left: max(24px, calc((100vw - var(--content)) / 2)); padding: 64px 32px 68px 0; }
.home-hero .lede { margin-bottom: 28px; }
.hero-age-label { margin: 0 0 10px; font-size: 13px; font-weight: 850; }
.hero-actions { display: flex; gap: 10px; margin-top: 18px; }
.home-hero-media { position: relative; min-height: 650px; overflow: hidden; background: var(--nido-mist); }
.home-hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.media-label { position: absolute; left: 22px; bottom: 22px; padding: 13px 17px; border-radius: 4px; background: var(--nido-yellow); font-size: 14px; font-weight: 900; }
.media-label small { display: block; margin-bottom: 3px; font-size: 10px; }
.stage-band { padding: 42px 0; background: var(--nido-green); color: white; }
.stage-grid { display: grid; grid-template-columns: 170px minmax(0, 1fr) 250px; align-items: center; gap: 40px; }
.stage-number { color: var(--nido-yellow); font-size: 72px; line-height: 1; font-weight: 950; }
.stage-copy small { display: block; margin-bottom: 8px; color: var(--nido-sky); font-weight: 850; }
.stage-copy h2 { margin: 0 0 8px; font-size: 30px; line-height: 1.28; }
.stage-copy p { margin: 0; color: #dce9e5; line-height: 1.65; }
.product-guide-pair { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 16px; }
.package-feature { min-height: 350px; border-radius: 8px; overflow: hidden; background: var(--nido-pink); display: grid; grid-template-columns: 1.05fr 0.95fr; }
.package-feature img { width: 100%; height: 100%; object-fit: cover; }
.package-feature-copy { padding: 34px; display: flex; flex-direction: column; justify-content: space-between; }
.package-feature-copy small { font-weight: 800; }
.package-feature-copy h3 { margin: 20px 0; font-size: 30px; line-height: 1.25; }
.guide-feature { min-height: 350px; padding: 34px; border-radius: 8px; background: var(--nido-sky); display: flex; flex-direction: column; justify-content: space-between; }
.guide-feature h3 { max-width: 420px; margin: 24px 0; font-size: 30px; line-height: 1.3; }
.guide-mini-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.guide-mini-step { padding-top: 11px; border-top: 3px solid var(--nido-ink); font-size: 12px; font-weight: 850; }
.package-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.package-card { min-width: 0; border: 1px solid var(--nido-line); border-radius: 8px; overflow: hidden; background: white; display: grid; grid-template-rows: 220px 1fr; }
.package-card-media { position: relative; overflow: hidden; background: var(--nido-pink); }
.package-card:nth-child(2) .package-card-media { background: var(--nido-sky); }
.package-card:nth-child(3) .package-card-media { background: var(--nido-yellow); }
.package-card:nth-child(4) .package-card-media { background: var(--nido-mist); }
.package-card-media img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; }
.age-badge { position: absolute; left: 14px; top: 14px; min-height: 32px; padding: 0 12px; border-radius: 99px; background: var(--nido-white); color: var(--nido-green); display: inline-flex; align-items: center; font-size: 12px; font-weight: 900; }
.package-card-body { padding: 20px; display: flex; flex-direction: column; }
.package-card-body h3 { margin: 0 0 8px; font-size: 21px; }
.package-card-body p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.6; }
.package-meta { display: flex; justify-content: space-between; gap: 10px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--nido-line); color: var(--nido-muted); font-size: 12px; }
.package-card .btn { width: 100%; margin-top: 18px; }
.guide-walkthrough { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 72px; align-items: center; }
.guide-device { position: relative; max-width: 420px; min-height: 650px; margin: 0 auto; padding: 18px; border: 2px solid var(--nido-ink); border-radius: 8px; background: white; box-shadow: var(--shadow-soft); }
.guide-device-bar { height: 38px; border-bottom: 1px solid var(--nido-line); display: flex; align-items: center; justify-content: space-between; font-size: 10px; font-weight: 850; }
.guide-device-stage { margin-top: 18px; padding: 18px; background: var(--nido-sky); }
.guide-device-stage small { font-weight: 850; }
.guide-device-stage h3 { margin: 8px 0 0; font-size: 23px; line-height: 1.35; }
.device-steps { margin-top: 18px; border-top: 2px solid var(--nido-ink); }
.device-step { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--nido-line); font-size: 13px; line-height: 1.55; }
.device-step b { color: var(--nido-coral); }
.parent-language { margin-top: 18px; padding: 16px; border-left: 5px solid var(--nido-yellow); background: var(--nido-mist); font-size: 13px; line-height: 1.65; }
.qr-demo { width: 142px; height: 142px; padding: 10px; background: white; border: 1px solid var(--nido-ink); }
.qr-demo img, .qr-demo canvas { width: 100% !important; height: 100% !important; }
.walkthrough-steps { margin-top: 28px; border-top: 2px solid var(--nido-ink); }
.walkthrough-row { display: grid; grid-template-columns: 70px 1fr; gap: 20px; padding: 19px 0; border-bottom: 1px solid var(--nido-line); }
.walkthrough-row b { color: var(--nido-coral); font-size: 21px; }
.walkthrough-row h3 { margin: 0 0 5px; font-size: 18px; }
.walkthrough-row p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.6; }
.proof-roadmap { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 72px; }
.proof-ledger { border-top: 2px solid white; }
.proof-row { display: grid; grid-template-columns: 130px 1fr 100px; gap: 18px; padding: 17px 0; border-bottom: 1px solid #668078; font-size: 13px; }
.proof-row b { color: var(--nido-yellow); }
.proof-row span { color: white; }
.proof-row em { color: var(--nido-sky); text-align: right; font-style: normal; }
.roadmap { margin-top: 34px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid #779188; }
.roadmap-item { min-height: 170px; padding: 22px; border-right: 1px solid #779188; }
.roadmap-item:last-child { border: 0; }
.roadmap-item small { color: var(--nido-sky); font-weight: 850; }
.roadmap-item strong { display: block; margin: 15px 0 8px; color: var(--nido-yellow); font-size: 25px; }
.roadmap-item p { margin: 0; color: #d6e3df; font-size: 13px; line-height: 1.6; }
.faq-list { border-top: 2px solid var(--nido-ink); }
.faq-item { border-bottom: 1px solid var(--nido-line); }
.faq-question { width: 100%; min-height: 70px; padding: 18px 0; border: 0; background: transparent; color: var(--nido-ink); display: grid; grid-template-columns: 1fr 44px; align-items: center; gap: 18px; text-align: left; font-size: 17px; font-weight: 850; }
.faq-symbol { width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; font-size: 23px; }
.faq-answer { padding: 0 64px 20px 0; color: var(--nido-muted); line-height: 1.75; }
.closing-band { padding: 72px 0; }
.closing-grid { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 40px; }
.closing-grid h2 { margin: 0 0 10px; font-size: 38px; line-height: 1.25; }
.closing-grid p { margin: 0; color: #36514a; }

/* Interior heroes and shared content */
.page-hero { padding: 82px 0 68px; border-bottom: 1px solid var(--nido-line); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr); gap: 70px; align-items: center; }
.page-hero-media { min-height: 430px; position: relative; overflow: hidden; border-radius: 8px; background: var(--nido-mist); }
.page-hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-hero-media .media-label { left: 16px; bottom: 16px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 24px; color: var(--nido-muted); font-size: 12px; }
.breadcrumb a { text-decoration: none; }
.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--nido-line); border-bottom: 1px solid var(--nido-line); }
.metric-item { min-height: 112px; padding: 23px; border-right: 1px solid var(--nido-line); }
.metric-item:last-child { border-right: 0; }
.metric-item b { display: block; margin-bottom: 8px; color: var(--nido-coral); font-size: 23px; }
.metric-item span { color: var(--nido-muted); font-size: 13px; line-height: 1.55; }
.info-note { padding: 16px 18px; border-left: 5px solid var(--nido-yellow); background: var(--nido-mist); color: #3e5751; font-size: 13px; line-height: 1.65; }
.status-pill { min-height: 28px; padding: 0 10px; border-radius: 99px; display: inline-flex; align-items: center; background: var(--nido-mist); color: var(--nido-green); font-size: 11px; font-weight: 850; }
.status-pill.pending { background: var(--nido-yellow); color: var(--nido-ink); }
.status-pill.guide { background: var(--nido-sky); color: var(--nido-ink); }

/* Shop */
.shop-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 22px; margin-bottom: 28px; }
.result-count { min-width: 86px; color: var(--nido-muted); font-size: 13px; text-align: right; }
.shop-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.shop-grid .package-card { grid-template-rows: 250px 1fr; }
.compare-wrap { overflow-x: auto; border-top: 2px solid var(--nido-ink); }
.compare-table { width: 100%; min-width: 850px; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 18px 16px; border-bottom: 1px solid var(--nido-line); border-right: 1px solid var(--nido-line); text-align: left; vertical-align: top; }
.compare-table th:last-child, .compare-table td:last-child { border-right: 0; }
.compare-table thead th { background: var(--nido-mist); color: var(--nido-green); font-size: 13px; }
.compare-table tbody th { width: 150px; color: var(--nido-muted); font-size: 13px; }
.compare-table td { font-size: 14px; line-height: 1.55; }

/* Product */
.product-top { padding: 64px 0 84px; }
.product-layout { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: start; }
.product-gallery { display: grid; grid-template-columns: 86px minmax(0, 1fr); gap: 14px; }
.gallery-thumbs { display: grid; align-content: start; gap: 10px; }
.gallery-thumb { width: 86px; aspect-ratio: 1; padding: 0; border: 1px solid var(--nido-line); border-radius: 4px; overflow: hidden; background: white; }
.gallery-thumb[aria-pressed="true"] { border: 3px solid var(--nido-coral); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-main { min-height: 610px; border-radius: 8px; overflow: hidden; background: var(--nido-pink); }
.gallery-main img { width: 100%; height: 100%; min-height: 610px; object-fit: cover; }
.product-summary { position: sticky; top: 130px; }
.product-kicker { color: var(--nido-coral); font-size: 12px; font-weight: 900; }
.product-summary h1 { margin: 12px 0; font-size: 42px; line-height: 1.22; }
.product-age { margin: 0 0 18px; color: var(--nido-muted); }
.product-price { margin: 22px 0; padding: 20px 0; border-top: 1px solid var(--nido-line); border-bottom: 1px solid var(--nido-line); }
.product-price strong { display: block; font-size: 25px; }
.product-price span { color: var(--nido-muted); font-size: 12px; }
.option-group { margin: 22px 0; }
.option-group label { display: block; margin-bottom: 9px; font-size: 13px; font-weight: 850; }
.option-group select { width: 100%; height: 50px; padding: 0 14px; border: 1px solid var(--nido-line); border-radius: 4px; background: white; }
.purchase-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.purchase-actions .btn { width: 100%; }
.summary-points { margin-top: 24px; border-top: 1px solid var(--nido-line); }
.summary-point { min-height: 54px; padding: 12px 0; border-bottom: 1px solid var(--nido-line); display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: 10px; font-size: 13px; }
.why-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 68px; align-items: start; }
.why-number { color: var(--nido-yellow); font-size: 90px; line-height: 1; font-weight: 950; }
.observation-list { margin-top: 28px; border-top: 2px solid white; }
.observation-row { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 17px 0; border-bottom: 1px solid #6b867d; }
.observation-row b { color: var(--nido-yellow); }
.inside-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.inside-item { min-height: 220px; padding: 26px; border: 1px solid var(--nido-line); border-radius: 8px; background: white; }
.inside-index { color: var(--nido-coral); font-size: 12px; font-weight: 900; }
.inside-item h3 { margin: 44px 0 10px; font-size: 21px; }
.inside-item p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.6; }
.policy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.policy-panel { padding: 28px; border-top: 3px solid var(--nido-ink); background: white; }
.policy-panel h3 { margin: 0 0 12px; font-size: 20px; }
.policy-panel p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.7; }

/* Guide */
.guide-hero { padding: 74px 0; background: var(--nido-sky); }
.guide-hero-grid { display: grid; grid-template-columns: 1fr 0.85fr; gap: 70px; align-items: center; }
.guide-hero .page-title { max-width: 720px; }
.qr-panel { min-height: 330px; padding: 30px; border: 1px solid var(--nido-ink); background: white; display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 28px; }
.qr-panel h2 { margin: 0 0 12px; font-size: 24px; }
.qr-panel p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.7; }
.guide-card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.guide-card { min-height: 290px; padding: 24px; border: 1px solid var(--nido-line); border-radius: 8px; background: white; display: flex; flex-direction: column; }
.guide-card-number { color: var(--nido-coral); font-size: 44px; line-height: 1; font-weight: 950; }
.guide-card small { margin-top: 8px; color: var(--nido-muted); font-weight: 750; }
.guide-card h3 { margin: auto 0 8px; font-size: 21px; line-height: 1.35; }
.guide-card p { margin: 0; color: var(--nido-muted); font-size: 13px; line-height: 1.55; }
.guide-card .btn { width: 100%; margin-top: 18px; }
.guide-elements { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--nido-line); border-bottom: 1px solid var(--nido-line); }
.guide-element { min-height: 210px; padding: 24px; border-right: 1px solid var(--nido-line); }
.guide-element:last-child { border: 0; }
.guide-element b { color: var(--nido-coral); font-size: 14px; }
.guide-element h3 { margin: 38px 0 8px; font-size: 18px; }
.guide-element p { margin: 0; color: var(--nido-muted); font-size: 13px; line-height: 1.55; }
.access-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.access-option { padding: 28px; border: 1px solid var(--nido-line); background: white; }
.access-option.recommended { border: 3px solid var(--nido-green); }
.access-option h3 { margin: 12px 0; font-size: 21px; }
.access-option p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.65; }

/* Guide detail */
.guide-detail-shell { width: min(900px, calc(100% - 48px)); margin: 0 auto; }
.guide-context { padding: 28px 0; border-bottom: 1px solid var(--nido-line); display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.guide-context-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.guide-detail-hero { padding: 66px 0 50px; }
.guide-detail-hero h1 { max-width: 730px; margin: 12px 0 18px; font-size: 48px; line-height: 1.24; }
.guide-section { padding: 64px 0; border-top: 1px solid var(--nido-line); }
.guide-section-full { position: relative; left: 50%; width: 100vw; margin-left: -50vw; padding-left: max(20px, calc((100vw - 900px) / 2)); padding-right: max(20px, calc((100vw - 900px) / 2)); }
.guide-section-grid { display: grid; grid-template-columns: 180px 1fr; gap: 58px; }
.guide-section-label { color: var(--nido-coral); font-size: 12px; font-weight: 900; }
.guide-section-content h2 { margin: 0 0 16px; font-size: 32px; line-height: 1.35; }
.guide-section-content > p { margin: 0; color: var(--nido-muted); line-height: 1.75; }
.instruction-list { margin-top: 28px; border-top: 2px solid var(--nido-ink); }
.instruction-step { display: grid; grid-template-columns: 70px 1fr; gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--nido-line); }
.instruction-step b { color: var(--nido-coral); font-size: 23px; }
.instruction-step h3 { margin: 0 0 6px; font-size: 18px; }
.instruction-step p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.65; }
.language-cards { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.language-card { min-height: 160px; padding: 24px; border-radius: 8px; background: var(--nido-yellow); }
.language-card.avoid { background: var(--nido-mist); }
.language-card small { font-weight: 900; }
.language-card blockquote { margin: 32px 0 0; font-family: "Noto Serif KR", serif; font-size: 19px; line-height: 1.55; font-weight: 700; }
.checkpoint-list { margin-top: 24px; border-top: 2px solid var(--nido-ink); }
.checkpoint { min-height: 60px; padding: 12px 0; border-bottom: 1px solid var(--nido-line); display: grid; grid-template-columns: 44px 1fr; align-items: center; gap: 10px; }
.checkpoint input { width: 22px; height: 22px; accent-color: var(--nido-green); }
.expert-note { margin-top: 22px; padding: 26px; border-left: 6px solid var(--nido-coral); background: var(--nido-mist); }
.expert-note strong { display: block; margin-bottom: 10px; }
.expert-note p { margin: 0; color: var(--nido-muted); line-height: 1.7; }
.video-poster { min-height: 430px; margin-top: 24px; position: relative; overflow: hidden; border-radius: 8px; background: var(--nido-ink); }
.video-poster img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.58; }
.video-play { position: absolute; inset: 0; margin: auto; width: 72px; height: 72px; border: 0; border-radius: 99px; background: var(--nido-yellow); color: var(--nido-ink); display: inline-flex; align-items: center; justify-content: center; line-height: 0; }
.video-play svg { width: 28px; height: 28px; }
.video-label { position: absolute; left: 20px; bottom: 18px; color: white; font-size: 13px; font-weight: 800; }
.guide-next { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.next-panel { min-height: 220px; padding: 28px; border-radius: 8px; display: flex; flex-direction: column; justify-content: space-between; text-decoration: none; }
.next-panel:first-child { background: var(--nido-sky); }
.next-panel:last-child { background: var(--nido-pink); }
.next-panel h3 { max-width: 330px; margin: 0; font-size: 24px; line-height: 1.35; }

/* Play and Library */
.editorial-hero { padding: 84px 0; }
.editorial-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: end; }
.editorial-hero .page-title { max-width: 650px; }
.editorial-hero-aside { border-top: 2px solid var(--nido-ink); padding-top: 20px; }
.editorial-hero-aside p { margin: 0 0 18px; color: var(--nido-muted); line-height: 1.75; }
.content-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.content-card { min-width: 0; border: 1px solid var(--nido-line); border-radius: 8px; overflow: hidden; background: white; display: grid; grid-template-rows: 230px 1fr; }
.content-card-media { position: relative; overflow: hidden; background: var(--nido-sky); }
.content-card:nth-child(2n) .content-card-media { background: var(--nido-yellow); }
.content-card:nth-child(3n) .content-card-media { background: var(--nido-pink); }
.content-card-media img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; }
.content-type { position: absolute; left: 14px; top: 14px; min-height: 28px; padding: 0 10px; border-radius: 99px; background: white; display: inline-flex; align-items: center; color: var(--nido-green); font-size: 11px; font-weight: 900; }
.content-card-body { padding: 22px; display: flex; flex-direction: column; }
.content-card-body small { color: var(--nido-coral); font-weight: 850; }
.content-card-body h2, .content-card-body h3 { margin: 12px 0 10px; font-size: 22px; line-height: 1.4; }
.content-card-body p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.65; }
.content-card-body button, .content-card-body a { margin-top: auto; padding-top: 20px; border: 0; background: transparent; color: var(--nido-green); text-align: left; text-decoration: underline; font-weight: 850; }
.feature-article { display: grid; grid-template-columns: 1.1fr 0.9fr; min-height: 490px; }
.feature-article-media { position: relative; overflow: hidden; background: var(--nido-pink); }
.feature-article-media img { width: 100%; height: 100%; object-fit: cover; }
.feature-article-copy { padding: 58px; background: var(--nido-green); color: white; display: flex; flex-direction: column; justify-content: space-between; }
.feature-article-copy small { color: var(--nido-yellow); font-weight: 850; }
.feature-article-copy h2 { margin: 20px 0; font-family: "Noto Serif KR", serif; font-size: 37px; line-height: 1.4; }
.feature-article-copy p { margin: 0; color: #dce9e5; line-height: 1.75; }
.feature-article-copy .btn { align-self: flex-start; margin-top: 30px; }
.article-dialog-copy h3 { margin: 28px 0 10px; font-size: 20px; }
.article-dialog-copy p { margin: 0; color: var(--nido-muted); line-height: 1.75; }

/* About */
.about-hero { min-height: 650px; position: relative; overflow: hidden; display: flex; align-items: flex-end; }
.about-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.about-hero-overlay { position: absolute; inset: 0; background: rgba(18, 67, 57, 0.37); }
.about-hero-copy { position: relative; z-index: 1; padding-bottom: 62px; color: white; }
.about-hero-copy .page-title { max-width: 820px; margin-bottom: 18px; }
.about-hero-copy .lede { color: white; text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--nido-line); border-bottom: 1px solid var(--nido-line); }
.principle { min-height: 300px; padding: 30px; border-right: 1px solid var(--nido-line); }
.principle:last-child { border: 0; }
.principle b { color: var(--nido-coral); font-size: 13px; }
.principle h3 { margin: 72px 0 12px; font-size: 24px; line-height: 1.35; }
.principle p { margin: 0; color: var(--nido-muted); line-height: 1.7; }
.process-list { border-top: 2px solid var(--nido-ink); }
.process-row { min-height: 110px; padding: 22px 0; border-bottom: 1px solid var(--nido-line); display: grid; grid-template-columns: 90px 1fr 1.2fr; gap: 30px; align-items: center; }
.process-row b { color: var(--nido-coral); font-size: 25px; }
.process-row h3 { margin: 0; font-size: 20px; }
.process-row p { margin: 0; color: var(--nido-muted); font-size: 14px; line-height: 1.65; }
.partner-band { padding: 54px 0; border-top: 1px solid var(--nido-line); border-bottom: 1px solid var(--nido-line); }
.partner-grid { display: grid; grid-template-columns: 230px 1fr; gap: 58px; align-items: center; }
.partner-mark { height: 110px; border: 1px solid var(--nido-line); display: grid; place-items: center; background: white; font-weight: 900; }
.partner-copy h2 { margin: 0 0 12px; font-size: 28px; }
.partner-copy p { margin: 0; color: var(--nido-muted); line-height: 1.7; }

@media (max-width: 1100px) {
  .desktop-nav { gap: 18px; }
  .header-age { display: none; }
  .home-hero { grid-template-columns: 1fr 1fr; }
  .home-hero-inner { margin-left: 24px; }
  .display-title { font-size: 49px; }
  .package-grid, .shop-grid, .guide-card-grid { grid-template-columns: 1fr 1fr; }
  .guide-elements { grid-template-columns: repeat(3, 1fr); }
  .guide-element { border-bottom: 1px solid var(--nido-line); }
  .guide-element:nth-child(3) { border-right: 0; }
  .product-layout { gap: 36px; }
  .gallery-main, .gallery-main img { min-height: 520px; }
}

@media (max-width: 900px) {
  .container { width: min(var(--content), calc(100% - 40px)); }
  .section { padding: 76px 0; }
  .header-main { grid-template-columns: 1fr auto; }
  .desktop-nav, .header-actions .desktop-only { display: none; }
  .mobile-menu-button { display: inline-flex; }
  .home-hero { grid-template-columns: 1fr; }
  .home-hero-inner { width: auto; margin: 0; padding: 60px 24px; }
  .home-hero-media { min-height: 520px; }
  .stage-grid { grid-template-columns: 130px 1fr; }
  .stage-grid .btn { grid-column: 1 / -1; }
  .section-head, .page-hero-grid, .guide-hero-grid, .editorial-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .product-guide-pair, .guide-walkthrough, .proof-roadmap, .product-layout, .why-grid { grid-template-columns: 1fr; }
  .guide-device { order: 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
  .product-summary { position: static; }
  .inside-grid { grid-template-columns: 1fr 1fr; }
  .guide-elements { grid-template-columns: 1fr 1fr; }
  .guide-element:nth-child(2n) { border-right: 0; }
  .guide-element:nth-child(3) { border-right: 1px solid var(--nido-line); }
  .access-grid { grid-template-columns: 1fr; }
  .content-grid { grid-template-columns: 1fr 1fr; }
  .feature-article { grid-template-columns: 1fr; }
  .feature-article-media { min-height: 420px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--nido-line); }
  .principle h3 { margin-top: 40px; }
  .process-row { grid-template-columns: 70px 1fr; }
  .process-row p { grid-column: 2; }
}

@media (max-width: 620px) {
  .container, .editorial, .guide-detail-shell { width: calc(100% - 40px); }
  .site-notice { min-height: 28px; font-size: 10px; }
  .site-header { top: 0; }
  .header-main { height: 64px; }
  .site-brand { font-size: 21px; }
  .mobile-menu { inset: 92px 0 0; }
  .section { padding: 64px 0; }
  .section-sm { padding: 48px 0; }
  .display-title { font-size: 38px; line-height: 1.18; }
  .page-title { font-size: 37px; }
  .section-title { font-size: 30px; }
  .sub-title { font-size: 22px; }
  .lede { font-size: 16px; }
  .section-head { gap: 16px; margin-bottom: 30px; }
  .section-head p { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .home-hero-inner { padding: 44px 20px 36px; }
  .home-hero-media { min-height: 355px; }
  .age-rail { grid-template-columns: 1fr 1fr; }
  .age-rail button:nth-child(2) { border-right: 0; }
  .age-rail button:nth-child(-n + 2) { border-bottom: 1px solid var(--nido-green); }
  .stage-band { padding: 32px 0; }
  .stage-grid { grid-template-columns: 78px 1fr; gap: 18px; }
  .stage-number { font-size: 46px; }
  .stage-copy h2 { font-size: 22px; }
  .stage-copy p { font-size: 14px; }
  .package-feature { grid-template-columns: 1fr; }
  .package-feature img { aspect-ratio: 4 / 3; }
  .guide-mini-steps { grid-template-columns: 1fr 1fr; }
  .package-grid, .shop-grid, .guide-card-grid, .inside-grid, .content-grid { grid-template-columns: 1fr; }
  .package-card, .shop-grid .package-card { grid-template-rows: 240px 1fr; }
  .walkthrough-row { grid-template-columns: 48px 1fr; }
  .proof-row { grid-template-columns: 95px 1fr; }
  .proof-row em { grid-column: 2; text-align: left; }
  .roadmap { grid-template-columns: 1fr; }
  .roadmap-item { min-height: 130px; border-right: 0; border-bottom: 1px solid #779188; }
  .closing-grid { grid-template-columns: 1fr; }
  .closing-grid .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid > :first-child { grid-column: auto; }
  .footer-meta { flex-direction: column; }
  .footer-credit { text-align: left; }
  .page-hero { padding: 56px 0 50px; }
  .page-hero-media { min-height: 330px; }
  .metric-strip { grid-template-columns: 1fr; }
  .metric-item { min-height: 88px; border-right: 0; border-bottom: 1px solid var(--nido-line); }
  .metric-item:last-child { border-bottom: 0; }
  .shop-toolbar { align-items: flex-end; }
  .result-count { min-width: 62px; }
  .product-top { padding: 36px 0 60px; }
  .product-gallery { grid-template-columns: 1fr; }
  .gallery-thumbs { grid-row: 2; grid-template-columns: repeat(3, 1fr); }
  .gallery-thumb { width: 100%; }
  .gallery-main, .gallery-main img { min-height: 410px; }
  .product-summary h1 { font-size: 34px; }
  .purchase-actions { grid-template-columns: 1fr; }
  .why-number { font-size: 65px; }
  .policy-grid { grid-template-columns: 1fr; }
  .guide-hero { padding: 54px 0; }
  .qr-panel { min-height: 0; grid-template-columns: 1fr; }
  .guide-elements { grid-template-columns: 1fr; }
  .guide-element, .guide-element:nth-child(3) { min-height: 170px; border-right: 0; }
  .guide-element h3 { margin-top: 24px; }
  .guide-context { grid-template-columns: 1fr; }
  .guide-detail-hero { padding: 50px 0 38px; }
  .guide-detail-hero h1 { font-size: 37px; }
  .guide-section { padding: 48px 0; }
  .guide-section-grid { grid-template-columns: 1fr; gap: 14px; }
  .guide-section-content h2 { font-size: 27px; }
  .instruction-step { grid-template-columns: 50px 1fr; gap: 14px; }
  .language-cards, .guide-next { grid-template-columns: 1fr; }
  .video-poster { min-height: 290px; }
  .editorial-hero { padding: 58px 0; }
  .feature-article-media { min-height: 300px; }
  .feature-article-copy { padding: 32px 24px; }
  .feature-article-copy h2 { font-size: 29px; }
  .about-hero { min-height: 610px; }
  .about-hero-copy { padding-bottom: 42px; }
  .about-hero-copy .page-title { font-size: 37px; }
  .process-row { grid-template-columns: 48px 1fr; gap: 16px; }
  .partner-grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}