/* snowball — 아이스 블루 톤. 라이트/다크 토큰은 :root 에서만 교체 */
:root {
  --bg: #F7FAFD;
  --bg2: #EEF3F9;
  --sf: #FFFFFF;
  --sf2: #F3F7FC;
  --bd: #E1E8F1;
  --bd2: #CFDAE7;
  --tx: #0F1B2D;
  --tx2: #3A4A60;
  --dm: #6B7A90;
  --ac: #1F63B5;       /* 강조 텍스트 — 흰 배경 대비 5.9:1 */
  --ac2: #8CC2F5;      /* 어두운 배경 위 강조 */
  --ac-glow: #D6E8FB;
  --ac-chip: #E6F0FB;
  --ink: #0F1B2D;      /* contact·footer 배경 (양 모드 공통 짙은 남색) */
  --ink-tx: #F2F6FB;
  --ink-dm: #9FB0C6;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B121C;
    --bg2: #111A26;
    --sf: #141E2B;
    --sf2: #0F1823;
    --bd: #243244;
    --bd2: #2F4057;
    --tx: #EEF3F9;
    --tx2: #BCC8D8;
    --dm: #8494AA;
    --ac: #8CC2F5;
    --ac-glow: rgba(140, 194, 245, 0.14);
    --ac-chip: #18304B;
    --ink: #111A26;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  background: var(--bg); color: var(--tx);
  -webkit-font-smoothing: antialiased; scroll-behavior: smooth;
  word-break: keep-all;
}
body { min-height: 100vh; line-height: 1.6; background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--ac); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ─── Header ─── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--bd);
}
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 36px; height: 36px; display: block; border-radius: 50%; object-fit: cover; box-shadow: 0 0 0 1.5px var(--bd2); }
.brand-name { font-size: 19px; font-weight: 800; letter-spacing: -0.5px; }
.nav-links { display: flex; gap: 28px; font-size: 14px; font-weight: 600; color: var(--tx2); }
.nav-links a { position: relative; padding: 4px 0; transition: color 0.18s var(--ease-out); }
.nav-links a:hover { color: var(--ac); }
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 1.5px;
  background: var(--ac); transform: scaleX(0); transform-origin: left;
  transition: transform 0.22s var(--ease-out);
}
.nav-links a:hover::after { transform: scaleX(1); }

.menu-toggle {
  display: none; width: 44px; height: 44px; margin-right: -8px;
  align-items: center; justify-content: center;
  background: transparent; border: none; cursor: pointer;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  display: block; width: 22px; height: 2px; background: var(--tx); position: relative;
}
.menu-toggle span::before, .menu-toggle span::after {
  content: ''; position: absolute; left: 0; transition: transform .2s;
}
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }
.menu-toggle.open span { background: transparent; }
.menu-toggle.open span::before { top: 0; transform: rotate(45deg); }
.menu-toggle.open span::after { top: 0; transform: rotate(-45deg); }

.mobile-drawer {
  display: none; position: fixed; top: 0; right: 0; z-index: 200;
  width: 75%; max-width: 300px; height: 100vh;
  background: var(--sf); border-left: 1px solid var(--bd);
  padding: 80px 28px 24px;
  transform: translateX(100%); transition: transform .25s ease-out;
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.08);
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer a {
  display: block; padding: 14px 0; font-size: 17px; font-weight: 700;
  border-bottom: 1px solid var(--bd);
}
.drawer-backdrop { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.32); z-index: 150; }
.drawer-backdrop.open { display: block; }
@media (max-width: 720px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-drawer { display: block; }
}

/* ─── Hero ─── */
.hero { position: relative; overflow: hidden; padding: 110px 24px 120px; text-align: center; }
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 70% 55% at 50% 28%, var(--ac-glow) 0%, transparent 72%);
  animation: frost-breathe 9s ease-in-out infinite;
}
@keyframes frost-breathe { 0%, 100% { opacity: 0.75; } 50% { opacity: 1; } }
.hero-inner { max-width: 820px; margin: 0 auto; position: relative; }
.hero-eyebrow {
  display: inline-block; padding: 6px 14px; margin-bottom: 28px;
  background: var(--ac-chip); border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--ac);
}
.hero h1 {
  font-size: clamp(38px, 7vw, 72px); font-weight: 800; line-height: 1.12;
  letter-spacing: -2px; margin-bottom: 18px;
}
.hero h1 .accent { color: var(--ac); }
.hero .subtitle { max-width: 640px; margin: 0 auto 32px; font-size: clamp(16px, 2.2vw, 19px); font-weight: 500; font-style: italic; line-height: 1.6; color: var(--tx2); }
.hero .subtitle .by { display: block; margin-top: 6px; font-size: 13px; font-style: normal; font-weight: 600; color: var(--dm); }
.hero .desc { max-width: 600px; margin: 0 auto 40px; font-size: 16px; color: var(--tx2); line-height: 1.75; }
.hero-cta {
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px;
  background: var(--tx); color: var(--bg); border-radius: 12px;
  font-size: 15px; font-weight: 700;
  transition: transform 0.18s var(--ease-out), background 0.18s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.hero-cta:hover { background: var(--ac); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(31, 99, 181, 0.28); }
.hero-visual { position: relative; max-width: 960px; margin: 64px auto 0; }
.hero-visual img {
  display: block; width: 100%; height: auto; border-radius: 24px;
  box-shadow: 0 24px 60px rgba(15, 27, 45, 0.18);
}
@media (max-width: 720px) { .hero-visual { margin-top: 44px; } .hero-visual img { border-radius: 16px; } }
.hero-cta .arrow { transition: transform 0.2s var(--ease-out); }
.hero-cta:hover .arrow { transform: translateX(3px); }

/* ─── Section base ─── */
.block { padding: 88px 24px; }
.block-inner { max-width: 1100px; margin: 0 auto; }
.block-title { font-size: 12px; font-weight: 700; color: var(--ac); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 12px; }
.block-heading { font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; }
.block-desc { font-size: 16px; color: var(--tx2); max-width: 660px; line-height: 1.75; margin-bottom: 40px; }

/* ─── About ─── */
.about { background: var(--sf2); border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
.quote {
  margin: 28px 0 32px; padding: 28px 32px;
  background: var(--sf); border: 1px solid var(--bd); border-left: 4px solid var(--ac);
  border-radius: 4px 16px 16px 4px; max-width: 760px;
}
.quote blockquote p { font-size: clamp(18px, 2.3vw, 22px); font-weight: 700; line-height: 1.55; letter-spacing: -0.4px; }
.quote blockquote p.en { margin-top: 10px; font-size: 15px; font-weight: 500; font-style: italic; color: var(--tx2); letter-spacing: 0; }
.quote figcaption { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--dm); }
.quote cite { font-style: italic; }
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; } }
.about-card {
  background: var(--sf); border: 1px solid var(--bd); border-radius: 16px; padding: 28px;
  transition: transform 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}
.about-card:hover { transform: translateY(-3px); border-color: var(--bd2); }
.about-card .num { font-size: 28px; font-weight: 800; color: var(--ac); letter-spacing: -1px; line-height: 1.1; margin-bottom: 8px; }
.about-card .h { font-size: 15px; font-weight: 800; margin-bottom: 8px; }
.about-card .b { font-size: 14px; color: var(--tx2); line-height: 1.65; }

/* ─── Products ─── */
.products-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 860px) { .products-grid { grid-template-columns: 1fr; } }
.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--sf); border: 1px solid var(--bd); border-radius: 20px; padding: 32px 28px;
  transition: transform 0.25s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.25s var(--ease-out);
}
a.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(31, 99, 181, 0.12); border-color: var(--bd2); }
.product-card.hero-product { background: linear-gradient(135deg, var(--sf) 0%, var(--ac-chip) 160%); }
.product-card.live::before, .product-card.coming::before {
  position: absolute; top: 18px; right: 18px;
  font-size: 10px; font-weight: 800; letter-spacing: 0.5px; padding: 3px 8px; border-radius: 4px;
}
.product-card.live::before { content: 'LIVE'; color: var(--ac); background: var(--ac-chip); }
.product-card.coming::before { content: 'COMING'; color: var(--dm); background: var(--bg2); }
.product-card .code { font-size: 11px; font-weight: 700; color: var(--dm); letter-spacing: 0.5px; margin-bottom: 8px; }
.product-card .name { font-size: 26px; font-weight: 800; letter-spacing: -0.8px; margin-bottom: 4px; }
.product-card .ko { font-size: 13px; color: var(--dm); margin-bottom: 14px; }
.product-card .desc { font-size: 15px; color: var(--tx2); line-height: 1.7; }
.product-card .desc b { color: var(--tx); }
.product-card.coming .name, .product-card.coming .desc { opacity: 0.72; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.chips li { font-size: 12px; font-weight: 600; color: var(--ac); background: var(--ac-chip); padding: 5px 10px; border-radius: 999px; }
.card-note { margin-top: auto; padding-top: 20px; font-size: 12px; color: var(--dm); }

/* 카드 상시 부유 — translate 프로퍼티라 hover 의 transform 과 합성됨 */
.floatable { animation: card-float 9s ease-in-out infinite; }
.about-grid > .floatable:nth-child(2), .products-grid > .floatable:nth-child(2) { animation-delay: -3s; }
.about-grid > .floatable:nth-child(3) { animation-delay: -6s; }
@keyframes card-float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -3px; } }

/* ─── Contact ─── */
.contact { background: var(--ink); color: var(--ink-tx); }
.contact .block-title { color: var(--ac2); }
.contact .block-desc { color: var(--ink-dm); }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 640px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px; padding: 28px; transition: background 0.25s var(--ease-out);
}
.contact-card:hover { background: rgba(255, 255, 255, 0.07); }
.contact-card .label { font-size: 11px; font-weight: 700; color: var(--ac2); letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 10px; }
.contact-card .value { display: inline-block; font-size: 18px; font-weight: 700; margin-bottom: 4px; overflow-wrap: anywhere; }
.contact-card .value:hover { color: var(--ac2); }
.contact-card .sub { font-size: 13px; color: var(--ink-dm); }

/* ─── Footer ─── */
.site-footer {
  background: var(--ink); color: var(--ink-dm);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 36px 24px; font-size: 12px; line-height: 1.8;
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 18px; font-weight: 600; color: var(--ink-tx); }
.site-footer .links a:hover { color: var(--ac2); }
.site-footer .disclaimer {
  padding: 14px 16px; margin-bottom: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 10px;
}
.site-footer .biz { margin-bottom: 8px; }

/* ─── Legal pages (privacy / terms) ─── */
.legal { max-width: 760px; margin: 0 auto; padding: 64px 24px 96px; }
.legal h1 { font-size: clamp(28px, 4vw, 36px); font-weight: 800; letter-spacing: -1px; margin-bottom: 8px; }
.legal .meta { font-size: 13px; color: var(--dm); margin-bottom: 40px; }
.legal h2 { font-size: 18px; font-weight: 800; margin: 36px 0 12px; }
.legal p, .legal li { font-size: 15px; color: var(--tx2); line-height: 1.8; }
.legal ol, .legal ul { padding-left: 20px; margin: 8px 0; }
.legal table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
.legal th, .legal td { border: 1px solid var(--bd); padding: 10px 12px; text-align: left; vertical-align: top; color: var(--tx2); }
.legal th { background: var(--sf2); color: var(--tx); font-weight: 700; }
.legal .table-wrap { overflow-x: auto; }
.legal a { color: var(--ac); text-decoration: underline; text-underline-offset: 2px; }
.legal h3 { font-size: 15px; font-weight: 700; margin: 20px 0 8px; color: var(--tx2); }
.legal .notice, .legal .warning {
  padding: 14px 18px; margin: 20px 0; border-radius: 6px; font-size: 14px; color: var(--tx2);
  background: var(--ac-chip); border-left: 3px solid var(--ac);
}
.legal .warning { background: color-mix(in srgb, #E84142 10%, var(--sf)); border-left-color: #E84142; }
.back-link { display: inline-block; margin-bottom: 32px; font-size: 14px; font-weight: 600; color: var(--ac); }