:root {
  /* Brand tokens: replace these values when the final identity is ready. */
  --color-brand-primary: #1768e5;
  --color-brand-secondary: #0c4fb9;
  --color-brand-accent: #58a6f7;
  --color-brand-soft: #eaf2ff;
  --color-ink: #132238;
  --color-text: #4b5b70;
  --color-muted: #708096;
  --color-line: #dce4ee;
  --color-surface: #ffffff;
  --color-surface-soft: #f6f9fc;
  --shadow-card: 0 14px 38px rgba(24, 54, 91, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --content-width: 1160px;
  --font-sans: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--color-ink); background: var(--color-surface); font-family: var(--font-sans); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.035em; }
p { color: var(--color-text); }
:focus-visible { outline: 3px solid rgba(23, 104, 229, 0.38); outline-offset: 3px; border-radius: 4px; }
.container { width: min(calc(100% - 40px), var(--content-width)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 14px; color: #fff; background: var(--color-brand-secondary); transform: translateY(-150%); border-radius: var(--radius-sm); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 100; top: 0; background: rgba(255,255,255,.9); border-bottom: 1px solid transparent; backdrop-filter: blur(14px); transition: border-color .2s, box-shadow .2s; }
.site-header.is-scrolled { border-bottom-color: rgba(220,228,238,.9); box-shadow: 0 4px 20px rgba(24,54,91,.04); }
.header-inner { display: flex; min-height: 76px; align-items: center; justify-content: space-between; }
.site-logo { display: inline-flex; min-height: 30px; align-items: center; color: var(--color-ink); }
.site-logo-image { display: block; width: auto; max-width: 180px; height: 30px; object-fit: contain; }
.site-logo-text { font-size: .96rem; font-weight: 800; letter-spacing: .13em; }
.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a { position: relative; color: var(--color-text); font-size: .91rem; font-weight: 650; }
.site-nav a::after { position: absolute; right: 0; bottom: -8px; left: 0; height: 2px; content: ""; background: var(--color-brand-primary); transform: scaleX(0); transition: transform .18s ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-ink); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--color-line); background: #fff; border-radius: var(--radius-sm); cursor: pointer; }
.menu-toggle > span:not(.sr-only) { display: block; width: 100%; height: 2px; margin: 4px 0; background: var(--color-ink); transition: transform .2s, opacity .2s; }

.hero { position: relative; overflow: hidden; padding: 92px 0 104px; }
.hero::before { position: absolute; z-index: -1; top: -260px; right: -220px; width: 650px; height: 650px; content: ""; background: radial-gradient(circle, rgba(88,166,247,.12), rgba(234,242,255,0) 68%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(340px, .88fr); gap: 84px; align-items: center; }
.eyebrow { margin-bottom: 16px; color: var(--color-brand-primary); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin-bottom: 28px; font-size: clamp(3rem, 6vw, 5.4rem); font-weight: 770; letter-spacing: -.065em; }
.hero h1 span { color: var(--color-brand-primary); }
.hero-lead { max-width: 620px; margin-bottom: 34px; font-size: 1.13rem; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 21px; border: 1px solid transparent; border-radius: var(--radius-sm); font-size: .92rem; font-weight: 750; transition: color .18s, background .18s, border-color .18s, transform .18s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--color-brand-primary); box-shadow: 0 9px 22px rgba(23,104,229,.18); }
.button-primary:hover { background: var(--color-brand-secondary); }
.button.is-disabled { opacity: .58; box-shadow: none; cursor: not-allowed; pointer-events: none; }
.button-secondary { color: var(--color-ink); background: #fff; border-color: var(--color-line); }
.button-secondary:hover { border-color: #aebed0; }
.hero-panel { position: relative; min-height: 390px; padding: 34px; overflow: hidden; color: #fff; background: linear-gradient(145deg, #0e2747 0%, #153d70 58%, var(--color-brand-primary) 150%); border-radius: var(--radius-lg); box-shadow: 0 30px 70px rgba(20,56,100,.2); }
.hero-panel::after { position: absolute; right: -90px; bottom: -130px; width: 330px; height: 330px; content: ""; border: 72px solid rgba(255,255,255,.06); border-radius: 50%; }
.signal-line { display: flex; gap: 7px; }
.signal-line span { width: 8px; height: 8px; background: rgba(255,255,255,.3); border-radius: 50%; }
.signal-line span:first-child { background: var(--color-brand-accent); }
.hero-panel-copy { position: absolute; z-index: 1; top: 50%; transform: translateY(-50%); }
.panel-label { margin-bottom: 15px; color: #8fc5ff; font-size: .75rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.panel-title { margin: 0; color: #fff; font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 680; line-height: 1.28; }
.panel-tags { position: absolute; z-index: 1; right: 30px; bottom: 28px; left: 30px; display: flex; flex-wrap: wrap; gap: 8px; }
.panel-tags span { padding: 6px 11px; color: #d6e8ff; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; font-size: .7rem; letter-spacing: .05em; }

.section { padding: 104px 0; }
.section-tint { background: var(--color-surface-soft); border-block: 1px solid #edf2f7; }
.compact-section { padding-block: 72px; }
.section-heading { max-width: 630px; margin-bottom: 42px; }
.section-heading h2 { margin-bottom: 18px; font-size: clamp(2rem, 4vw, 3.2rem); }
.section-heading > p:last-child { margin-bottom: 0; font-size: 1.03rem; }
.split-heading { display: flex; max-width: none; align-items: end; justify-content: space-between; gap: 30px; }
.split-heading > div h2 { margin-bottom: 0; }
.text-link, .card-link { color: var(--color-brand-secondary); font-size: .9rem; font-weight: 750; }
.text-link span, .card-link span { display: inline-block; transition: transform .18s; }
.text-link:hover span, .card-link:hover span { transform: translateX(4px); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card { display: flex; min-height: 330px; flex-direction: column; padding: 28px; background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md); box-shadow: var(--shadow-card); transition: transform .2s, border-color .2s, box-shadow .2s; }
.product-card:hover { border-color: #c5d3e3; box-shadow: 0 20px 45px rgba(24,54,91,.11); transform: translateY(-4px); }
.product-card-quiet { background: var(--color-surface-soft); box-shadow: none; }
.app-icon { display: grid; width: 58px; height: 58px; margin-bottom: 38px; place-items: center; color: #fff; border-radius: 15px; font-size: 1.15rem; font-weight: 800; }
.app-icon-placeholder { flex: 0 0 auto; }
.app-icon-image { object-fit: cover; }
.app-icon-blue { background: linear-gradient(145deg, var(--color-brand-primary), var(--color-brand-secondary)); }
.app-icon-sky { background: linear-gradient(145deg, var(--color-brand-accent), var(--color-brand-primary)); }
.app-icon-outline { color: var(--color-brand-primary); background: #fff; border: 1px dashed #9cb9df; }
.card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 12px; }
.status { display: inline-block; padding: 4px 9px; border-radius: 999px; font-size: .66rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.status-dev { color: #955b00; background: #fff4d6; }
.status-released { color: #176b46; background: #e2f7ec; }
.status-planned, .status-next { color: #53677f; background: #edf1f5; }
.product-card h3 { margin-bottom: 10px; font-size: 1.28rem; }
.product-card p { margin-bottom: 24px; }
.product-card .card-link { margin-top: auto; }
.card-link-muted { color: var(--color-muted); }
.direction-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; align-items: start; }
.principle-list { border-top: 1px solid var(--color-line); }
.principle { display: grid; grid-template-columns: 52px 1fr; gap: 22px; padding: 28px 0; border-bottom: 1px solid var(--color-line); }
.principle-number { padding-top: 2px; color: var(--color-brand-primary); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.principle h3 { margin-bottom: 8px; font-size: 1.2rem; }
.principle p { margin: 0; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 42px 48px; color: #fff; background: #112d50; border-radius: var(--radius-md); }
.cta-panel .eyebrow { margin-bottom: 8px; color: #91c5ff; }
.cta-panel h2 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.25rem); }

.page-hero { padding: 96px 0 80px; background: linear-gradient(180deg, #f7faff 0%, #fff 100%); border-bottom: 1px solid #eef3f8; }
.page-hero-small { padding-block: 72px 62px; }
.narrow-left { max-width: var(--content-width); }
.narrow-left > * { max-width: 760px; }
.page-hero h1 { margin-bottom: 22px; font-size: clamp(2.7rem, 6vw, 4.8rem); }
.page-hero p:last-child { max-width: 660px; margin-bottom: 0; font-size: 1.1rem; line-height: 1.8; }
.page-section { padding-top: 82px; }
.apps-list { display: grid; gap: 22px; }
.app-card-large { display: grid; grid-template-columns: 110px 1fr; gap: 32px; padding: 34px; border: 1px solid var(--color-line); border-radius: var(--radius-md); box-shadow: var(--shadow-card); }
.app-icon-large { width: 92px; height: 92px; margin: 0; border-radius: 22px; font-size: 1.65rem; }
.platform-label { color: var(--color-muted); font-size: .74rem; font-weight: 700; }
.app-card-content h2 { margin-bottom: 10px; font-size: 1.65rem; }
.app-card-content p { max-width: 720px; margin-bottom: 22px; }
.store-button { display: inline-flex; min-width: 150px; align-items: center; gap: 9px; padding: 8px 14px; color: #fff; background: #18202b; border-radius: 7px; font-size: .91rem; font-weight: 650; line-height: 1.1; }
.store-button small { display: block; margin-bottom: 2px; font-size: .55rem; font-weight: 500; letter-spacing: .04em; }
.play-symbol { color: #76b9ff; font-size: 1.25rem; }
.store-button.is-disabled { opacity: .52; cursor: not-allowed; }
.editor-note { margin-top: 42px; padding: 32px 36px; background: var(--color-surface-soft); border-left: 3px solid var(--color-brand-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.editor-note h2 { margin-bottom: 8px; font-size: 1.18rem; }
.editor-note p { margin: 0; }

.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.about-statement { padding-top: 5px; }
.about-statement p { color: var(--color-brand-secondary); font-size: clamp(1.45rem, 3vw, 2rem); font-weight: 680; line-height: 1.5; }
.prose h2 { margin-bottom: 26px; font-size: 1.75rem; }
.prose p { margin-bottom: 20px; font-size: 1.03rem; line-height: 1.9; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-grid article { padding: 28px; background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.value-grid span { color: var(--color-brand-primary); font-size: .7rem; font-weight: 800; letter-spacing: .08em; }
.value-grid h3 { margin: 34px 0 10px; font-size: 1.25rem; }
.value-grid p { margin: 0; }

.contact-card { display: flex; min-height: 240px; align-items: center; justify-content: space-between; gap: 40px; padding: 44px 48px; background: var(--color-surface-soft); border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.contact-label { margin-bottom: 8px; color: var(--color-muted); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.contact-email { color: var(--color-ink); font-size: clamp(1.5rem, 4vw, 2.45rem); font-weight: 730; letter-spacing: -.04em; }
.contact-email:hover { color: var(--color-brand-primary); }
.placeholder-note { max-width: 580px; margin: 13px 0 0; color: var(--color-muted); font-size: .82rem; }
.contact-guidance { max-width: 660px; margin-top: 54px; }
.contact-guidance h2 { margin-bottom: 20px; font-size: 1.35rem; }
.contact-guidance ul { margin: 0; padding-left: 1.2rem; color: var(--color-text); }
.contact-guidance li { margin: 8px 0; padding-left: 6px; }

.legal-section { padding-top: 72px; }
.legal-layout { display: grid; grid-template-columns: 280px minmax(0, 700px); gap: 80px; justify-content: space-between; align-items: start; }
.legal-note { position: sticky; top: 110px; padding: 22px; color: var(--color-text); background: var(--color-surface-soft); border: 1px solid var(--color-line); border-radius: var(--radius-sm); font-size: .86rem; }
.legal-note strong { display: block; margin-bottom: 7px; color: var(--color-ink); }
.legal-note p { margin: 0; }
.legal-content section { padding-bottom: 34px; margin-bottom: 34px; border-bottom: 1px solid var(--color-line); }
.legal-content section:last-child { border-bottom: 0; }
.legal-content h2 { margin-bottom: 14px; font-size: 1.27rem; }
.legal-content p { margin-bottom: 10px; line-height: 1.85; }
.legal-content a { color: var(--color-brand-secondary); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }

.site-footer { padding: 52px 0; background: #0d1d31; }
.footer-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.site-logo-footer { color: #fff; }
.footer-inner > div:first-child p { margin: 12px 0 0; color: #8fa3bb; font-size: .82rem; }
.footer-meta { text-align: right; }
.footer-meta a { color: #dbe6f2; font-size: .85rem; }
.footer-meta a:hover { color: #fff; text-decoration: underline; }
.footer-meta p { margin: 10px 0 0; color: #8297ae; font-size: .78rem; }

@media (max-width: 900px) {
  .hero { padding-top: 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 54px; }
  .hero-panel { min-height: 330px; }
  .card-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card:last-child, .value-grid article:last-child { grid-column: 1 / -1; }
  .direction-grid, .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .legal-layout { grid-template-columns: 1fr; gap: 44px; }
  .legal-note { position: static; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 32px), var(--content-width)); }
  .header-inner { min-height: 66px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 100%; right: 0; left: 0; display: none; padding: 10px 16px 18px; background: #fff; border-bottom: 1px solid var(--color-line); box-shadow: 0 16px 26px rgba(24,54,91,.08); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px; border-radius: 6px; }
  .site-nav a:hover { background: var(--color-surface-soft); }
  .site-nav a::after { display: none; }
  .menu-toggle[aria-expanded="true"] > span:nth-of-type(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-of-type(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-of-type(3) { transform: translateY(-6px) rotate(-45deg); }
  .hero { padding: 62px 0 76px; }
  .hero h1 { font-size: clamp(2.75rem, 14vw, 4.1rem); }
  .hero-lead { font-size: 1rem; }
  .hero-panel { min-height: 290px; padding: 26px; }
  .section { padding: 76px 0; }
  .compact-section { padding-block: 52px; }
  .split-heading { display: block; }
  .split-heading .text-link { display: inline-block; margin-top: 18px; }
  .card-grid, .value-grid { grid-template-columns: 1fr; }
  .product-card:last-child, .value-grid article:last-child { grid-column: auto; }
  .product-card { min-height: 300px; }
  .direction-grid { gap: 24px; }
  .cta-panel { display: block; padding: 32px 26px; }
  .cta-panel .button { margin-top: 24px; }
  .page-hero { padding: 68px 0 58px; }
  .page-hero h1 { font-size: clamp(2.35rem, 12vw, 3.45rem); }
  .page-section { padding-top: 60px; }
  .app-card-large { grid-template-columns: 1fr; padding: 26px; }
  .app-icon-large { width: 76px; height: 76px; border-radius: 18px; }
  .contact-card { display: block; min-height: 0; padding: 32px 26px; }
  .contact-card .button { width: 100%; margin-top: 28px; }
  .contact-email { overflow-wrap: anywhere; }
  .footer-inner { display: block; }
  .footer-meta { margin-top: 34px; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}