/* ─────────────────── Liquid Glass Tokens ─────────────────── */
:root {
  --accent-h: 250;
  --accent:        oklch(0.62 0.22 var(--accent-h));
  --accent-soft:   oklch(0.75 0.15 var(--accent-h));
  --accent-strong: oklch(0.52 0.24 var(--accent-h));

  --bg:        #faf9f5;
  --bg-ink:    #f5f1ff;
  --surface:   rgba(255, 255, 255, 0.55);

  --ink:    #0f0c1a;
  --ink-2:  #1a1233;
  --ink-3:  #2a2540;
  --ink-4:  #6e6582;
  --ink-5:  #8b8597;
  --ink-6:  #a59cba;

  --aurora-violet: #c2a1ff;
  --aurora-lilac:  #a78bff;
  --aurora-purple: #6b3fff;
  --aurora-deep:   #5b3fd4;
  --aurora-cyan:   #88e6ff;
  --aurora-mint:   #6ee0d4;
  --aurora-pink:   #ffa3d0;
  --aurora-rose:   #ff7ea3;
  --aurora-hot:    #ff4d8d;
  --aurora-peach:  #ffb088;

  --glass-tint: 255, 255, 255;
  --glass-alpha: 0.55;
  --glass-blur: 32px;
  --glass-border: rgba(255, 255, 255, 0.55);
  --glass-stroke: rgba(255, 255, 255, 0.9);
  --glass-shadow:
    0 1px 0 rgba(255, 255, 255, 0.7) inset,
    0 0 0 0.5px rgba(255, 255, 255, 0.4) inset,
    0 20px 60px -10px rgba(20, 12, 40, 0.18),
    0 4px 16px -4px rgba(20, 12, 40, 0.1);

  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;

  --container: 1200px;

  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color-scheme: light;
}

/* 다크 모드는 [data-theme="dark"]에서만 작동. 시스템 prefers-color-scheme: dark는 무시. */
[data-theme="dark"] {
  --bg:      #0c0918;
  --bg-ink:  #f5f1ff;
  --surface: rgba(255, 255, 255, 0.07);

  --ink:    #f5f1ff;
  --ink-2:  #e8eef9;
  --ink-3:  #d4cde8;
  --ink-4:  #a59cba;
  --ink-5:  #8b8597;
  --ink-6:  #6e6582;

  --glass-tint: 255, 255, 255;
  --glass-alpha: 0.07;
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-stroke: rgba(255, 255, 255, 0.18);
  --glass-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 0 0 0.5px rgba(255, 255, 255, 0.06) inset,
    0 24px 60px -10px rgba(0, 0, 0, 0.5),
    0 4px 16px -4px rgba(0, 0, 0, 0.4);

  color-scheme: dark;
}

/* ─────────────────── Base ─────────────────── */
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* Aurora gradient 배경 제거됨 (단색 베이스 유지) */

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--container); margin: 0 auto; padding-inline: 24px; }

/* ─────────────────── Glass primitives ─────────────────── */
.glass-card {
  background: rgba(var(--glass-tint), calc(var(--glass-alpha) - 0.1));
  backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  position: relative;
}

/* ─────────────────── Button ─────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600; font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 44px;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary {
  background: var(--aurora-deep);
  color: #fff;
  box-shadow: 0 6px 18px -6px rgba(91,63,212,0.45);
}
.btn-primary:hover {
  background: var(--aurora-purple);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -8px rgba(91,63,212,0.5);
}
.btn-ghost {
  background: rgba(var(--glass-tint), 0.4);
  color: var(--ink);
  border-color: var(--glass-border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}
.btn-ghost:hover { background: rgba(var(--glass-tint), 0.6); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ─────────────────── Skip link ─────────────────── */
.skip-link {
  position: absolute; top: 12px; left: 12px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--aurora-deep);
  color: #fff;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ─────────────────── Top bar (v1 절제 스타일) ─────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(170%) blur(20px);
  -webkit-backdrop-filter: saturate(170%) blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.5);
}
[data-theme="dark"] .topbar {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.topbar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; gap: 24px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 17px; letter-spacing: -.01em;
  color: var(--ink);
}
.brand img { width: 32px; height: 32px; border-radius: 9px; box-shadow: 0 4px 14px -4px rgba(20,12,40,.3); }
.top-nav { display: inline-flex; align-items: center; gap: 32px; margin-left: auto; }
.top-nav a:not(.btn) {
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.005em;
  padding: 8px 2px;
  position: relative;
  transition: color .15s ease;
}
.top-nav a:not(.btn):hover { color: var(--aurora-deep); }
.top-nav a:not(.btn).is-active { color: var(--ink); }
.top-nav a:not(.btn).is-active::after {
  content: ""; position: absolute;
  bottom: -2px; left: 2px; right: 2px;
  height: 2.5px;
  background: var(--aurora-purple);
  border-radius: 2px;
}
.top-nav .btn { padding: 10px 20px; min-height: 40px; font-size: 14.5px; font-weight: 700; margin-left: 6px; }
@media (max-width: 760px) {
  .top-nav a:not(.btn) { display: none; }
}

/* ─────────────────── PC 전용 좌측 sticky 목차 ─────────────────── */
.side-toc {
  position: fixed;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  padding: 20px 18px;
  background: rgba(var(--glass-tint), 0.55);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}
.side-toc ul {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}
/* 도트 사이를 잇는 세로 timeline 라인 */
.side-toc ul::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: rgba(110, 101, 130, 0.25);
  z-index: 0;
}
.side-toc li { position: relative; z-index: 1; }
.side-toc a {
  display: grid; grid-template-columns: 18px 1fr;
  align-items: center; gap: 12px;
  padding: 7px 14px 7px 4px;
  border-radius: 999px;
  color: var(--ink-4);
  font-size: 13px; font-weight: 600;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease;
}
.side-toc a:hover { color: var(--ink); background: rgba(var(--glass-tint), 0.6); }
.side-toc a.is-active {
  color: var(--ink);
  background: rgba(168, 139, 255, 0.16);
}
.side-toc a .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--ink-6);
  background: rgba(var(--glass-tint), 0.9);
  transition: all .2s ease;
  justify-self: center;
  box-sizing: border-box;
}
.side-toc a:hover .dot { border-color: var(--aurora-purple); }
.side-toc a.is-active .dot {
  background: var(--aurora-purple);
  border-color: var(--aurora-purple);
  box-shadow: 0 0 0 4px rgba(107, 63, 255, 0.18);
}
@media (max-width: 1280px) { .side-toc { display: none; } }

/* ─────────────────── Hero ─────────────────── */
.hero { padding: 88px 0 96px; }
.hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  background: rgba(var(--glass-tint), 0.5);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-radius: 999px;
  color: var(--ink-3);
  font-size: 13px; font-weight: 600;
  margin-bottom: 24px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--aurora-purple);
}
.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: -.028em;
  font-weight: 800;
  margin: 0 0 22px;
  color: var(--ink);
}
.hero h1 em {
  font-style: normal;
  color: var(--aurora-purple);
}
.hero p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-3);
  margin: 0 0 32px;
  max-width: 460px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ─────────── Hero visual wrapper ─────────── */
.hero-pass-wrap {
  position: relative;
  padding: 28px 8px;
  perspective: 1200px;
}
@media (max-width: 880px) {
  .hero { padding: 56px 0 64px; }
  .hero__inner { grid-template-columns: 1fr; gap: 36px; }
}

/* ─────────────────── Sections common ─────────────────── */
section { padding: 104px 0; }
.section-eyebrow {
  display: inline-block;
  font-size: 13px; font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--aurora-purple);
  margin-bottom: 14px;
}
section h2 {
  font-size: clamp(30px, 3.6vw, 44px);
  line-height: 1.2;
  letter-spacing: -.022em;
  font-weight: 800;
  margin: 0 0 14px;
  color: var(--ink);
}
section .lead {
  font-size: 17px;
  color: var(--ink-3);
  margin: 0 0 56px;
  max-width: 620px;
}

/* ─────────────────── 3대 가치 (KPI) ─────────────────── */
.kpis { padding: 24px 0 80px; }
.kpis__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.kpi-card { padding: 28px 24px; }
.kpi-card .icon-pill {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: rgba(168, 139, 255, 0.18);
  color: var(--aurora-purple);
  margin-bottom: 18px;
}
.kpi-card .icon-pill svg { width: 22px; height: 22px; }
.kpi-card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; color: var(--ink); }
.kpi-card p { margin: 0; font-size: 14px; color: var(--ink-3); line-height: 1.65; }
@media (max-width: 720px) { .kpis__grid { grid-template-columns: 1fr; } }

/* ─────────────────── 중간 CTA 띠 ─────────────────── */
.mid-cta { padding: 32px 0 64px; }
.mid-cta__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.mid-cta-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 22px 28px;
  background: rgba(168, 139, 255, 0.10);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
}
.mid-cta-card .copy strong {
  display: block; font-size: 18px; font-weight: 700; margin-bottom: 4px; color: var(--ink);
}
.mid-cta-card .copy span {
  font-size: 14px; color: var(--ink-3);
}
@media (max-width: 720px) {
  .mid-cta-card { grid-template-columns: 1fr; text-align: left; gap: 14px; padding: 22px; }
}

/* ─────────────────── Trust ─────────────────── */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.trust-item {
  padding: 24px;
  display: flex; gap: 14px; align-items: start;
}
.trust-item .icon-mini {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(168, 139, 255, 0.18);
  color: var(--aurora-purple);
  flex-shrink: 0;
}
.trust-item .icon-mini svg { width: 18px; height: 18px; }
.trust-item strong { display: block; font-size: 14px; font-weight: 700; margin-bottom: 4px; color: var(--ink); }
.trust-item span { color: var(--ink-3); font-size: 13px; line-height: 1.6; }
@media (max-width: 720px) { .trust-grid { grid-template-columns: 1fr; } }

/* ─────────────────── Contact ─────────────────── */
.contact { padding: 96px 0; }
.contact__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.contact-card {
  position: relative;
  padding: 64px 48px;
  text-align: center;
  border-radius: var(--radius-xl);
  background: rgba(168, 139, 255, 0.12);
  backdrop-filter: blur(32px) saturate(160%);
  -webkit-backdrop-filter: blur(32px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}
.contact-card h2 { color: var(--ink); margin-bottom: 14px; }
.contact-card p { color: var(--ink-3); margin: 0 auto 28px; max-width: 520px; }
.contact-actions { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
@media (max-width: 720px) { .contact-card { padding: 48px 24px; } }

/* ─────────────────── Footer ─────────────────── */
footer {
  padding: 40px 0 56px;
  color: var(--ink-4);
  font-size: 13px;
  text-align: center;
}
footer .brand-mini {
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: 8px;
  font-weight: 700; color: var(--ink-3);
}
footer .brand-mini img { width: 22px; height: 22px; border-radius: 6px; }
footer p { margin: 0; }
footer .footer-copy { font-size: 12px; color: var(--ink-4); }