@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root {
  --n0: #FFFFFF; --n50: #F9F9FB; --n75: #EDEDF3; --n100: #E8E8EE;
  --n200: #DADAE0; --n300: #C7C7CC; --n400: #AEAEB2; --n500: #8E8E93;
  --n600: #636366; --n700: #48484A; --n800: #3A3A3C; --n900: #1D1D1F;
  --shadow-100: 0 2px 20px rgba(0,0,0,0.06);
  --shadow-200: 0 2px 30px rgba(0,0,0,0.10);
}

body {
  font-family: 'Outfit', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--n900); background: var(--n0); line-height: 1.5; overflow-x: hidden;
}

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--n100); transition: box-shadow 0.3s ease;
}
.nav.scrolled { box-shadow: var(--shadow-100); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo svg { height: 18px; width: auto; }
.nav-logo img { height: 24px; width: auto; display: block; }
@media (max-width: 768px) { .nav-logo img { height: 20px; } }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--n500);
  text-decoration: none; transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--n900); }
.nav-links a.active { color: var(--n900); font-weight: 600; }
.nav-cta {
  padding: 8px 20px; border-radius: 8px; background: var(--n900);
  color: var(--n0) !important; font-size: 14px; font-weight: 500;
}
.nav-cta:hover { background: var(--n700); }
.nav-mobile-toggle { display: none; background: none; border: none; cursor: pointer; }

/* Nav dropdown */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-toggle { display: inline-flex; align-items: center; gap: 4px; }
.nav-caret { width: 16px; height: 16px; opacity: 0.7; transition: transform 0.2s ease; stroke-width: 2; }
.nav-dropdown:hover .nav-caret { transform: rotate(180deg); }
.nav-dropdown-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: var(--n0); border: 1px solid var(--n100); border-radius: 8px;
  box-shadow: var(--shadow-100); padding: 8px 0; min-width: 140px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 100;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
}
.nav-dropdown-menu a {
  display: block; padding: 10px 16px; font-size: 14px;
  color: var(--n600); text-decoration: none; white-space: nowrap;
}
.nav-dropdown-menu a:hover { background: var(--n50); color: var(--n900); }

/* ===== FOOTER ===== */
.footer { background: var(--n900); padding: 56px 0 32px; }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 40px;
  display: grid; grid-template-columns: 1fr auto auto; gap: 40px;
}
.footer-brand .footer-logo-text { font-size: 18px; font-weight: 600; color: var(--n0); margin-bottom: 20px; letter-spacing: -0.3px; opacity: 0.7; }
.footer-brand .footer-tagline { font-size: 15px; line-height: 1.7; color: var(--n400); margin-bottom: 24px; }
.footer-brand .footer-info { font-size: 12px; color: var(--n500); line-height: 1.9; }
.footer-col { min-width: 120px; }
.footer-col h4 { font-size: 11px; font-weight: 500; color: var(--n500); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1.5px; }
.footer-col a {
  display: block; font-size: 15px; font-weight: 600; color: var(--n200);
  text-decoration: none; margin-bottom: 14px; transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--n0); }
.footer-bottom {
  max-width: 1200px; margin: 40px auto 0; padding: 20px 40px 0;
  border-top: 1px solid var(--n800);
  text-align: center; font-size: 12px; color: var(--n500);
}

/* ===== DARK MODE ===== */
html.dark { --n0:#09090B; --n50:#18181B; --n75:#1F1F23; --n100:#27272A; --n200:#3F3F46; --n300:#52525B; --n400:#71717A; --n500:#A1A1AA; --n600:#D4D4D8; --n700:#E4E4E7; --n800:#F4F4F5; --n900:#FAFAFA; }
html.dark body { background: #09090B; color: #FAFAFA; }
html.dark .nav { background: rgba(9,9,11,0.92); border-bottom-color: var(--n100); }
html.dark .nav-cta { background: #FAFAFA !important; color: #09090B !important; }
html.dark .nav.scrolled .nav-cta { background: #FAFAFA !important; color: #09090B !important; }

/* 로고 라이트/다크 전환 */
html.dark .nav-logo img { filter: invert(1); }
/* 폼 input/select: 다크모드 무관 항상 라이트 색상 고정 */
html.dark .btn-outlined { background: var(--n50); color: var(--n900); border-color: var(--n200); }
html.dark .btn-solid { background: #FAFAFA; color: #09090B; }
html.dark .floating-cta { background: #FAFAFA; color: #09090B; }

/* ===== COMMON BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px;
  border-radius: 8px; font-size: 16px; font-weight: 500; cursor: pointer;
  transition: all 0.2s ease; text-decoration: none; border: none;
}
.btn-solid { background: var(--n900); color: var(--n0); }
.btn-solid:hover { background: var(--n700); transform: translateY(-1px); box-shadow: var(--shadow-200); }
.btn-outlined { background: var(--n0); color: var(--n900); border: 1.5px solid var(--n200); }
.btn-outlined:hover { background: var(--n50); border-color: var(--n300); }
.btn-white { background: var(--n0); color: var(--n900); }
.btn-white:hover { background: var(--n75); }

/* ===== COMMON UTILS ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.text-center { text-align: center; }
.section { padding: 80px 0; }
[id] { scroll-margin-top: calc(64px + 20px); }
.section-label { color: var(--n400); letter-spacing: 0.5px; margin-bottom: 12px; text-transform: uppercase; font-size: 12px; font-weight: 500; }
.section-title { font-size: 40px; font-weight: 700; line-height: 1.4; margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--n500); max-width: 720px; margin: 0 auto; }

/* ===== PAGE HERO ===== */
.page-hero { padding: 140px 0 60px; text-align: center; }
.page-hero h1 { font-size: 48px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.page-hero .desc { font-size: 18px; color: var(--n500); max-width: 600px; margin: 0 auto; }

/* ===== ANIMATIONS ===== */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }

/* ===== FLOATING CTA ===== */
.floating-cta {
  position: fixed; bottom: 32px; right: 32px;
  padding: 14px 24px; border-radius: 999px;
  background: var(--n900); color: var(--n0);
  font-size: 16px; font-weight: 600; cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  display: flex; align-items: center; gap: 8px;
  transform: translateY(100px); opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1000; border: none; text-decoration: none;
}
.floating-cta.show { transform: translateY(0); opacity: 1; }
.floating-cta:hover { box-shadow: 0 6px 30px rgba(0,0,0,0.3); transform: translateY(-2px) !important; }
.floating-cta .pulse-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--n0);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

/* ===== FORM COMMON ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--n900); margin-bottom: 6px; }
.form-input {
  width: 100%; padding: 12px 16px; border-radius: 8px;
  background: #FFFFFF; border: 1px solid #E4E4E7;
  color: #1A1A1A; font-size: 14px; font-family: inherit;
  transition: border-color 0.2s ease;
  color-scheme: light;
}
.form-input::placeholder { color: #A1A1AA; }
.form-input:focus { outline: none; border-color: #1A1A1A; box-shadow: 0 0 0 2px rgba(29,29,31,0.08); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible { outline: 2px solid #1A1A1A; outline-offset: 2px; border-radius: 2px; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238E8E93' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; color-scheme: light; }
.form-select option { background-color: #FFFFFF; color: #1A1A1A; }
textarea.form-input { min-height: 120px; resize: vertical; }
/* 폼 라벨도 다크모드에서 동일하게 보이도록 하드코딩 */
.form-group label { color: #1A1A1A; }

/* ===== CUSTOM DROPDOWN (다크모드 무관 항상 라이트로 고정) ===== */
.custom-select { position: relative; width: 100%; color-scheme: light; }
.custom-select-trigger {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 12px 16px; border-radius: 8px;
  background: #FFFFFF; border: 1px solid #E4E4E7;
  color: #A1A1AA; font-size: 14px; font-family: inherit;
  cursor: pointer; transition: border-color 0.2s ease;
  user-select: none;
}
.custom-select-trigger.filled { color: #1A1A1A; }
.custom-select-trigger:hover { border-color: #D4D4D8; }
.custom-select.open .custom-select-trigger { border-color: #1A1A1A; box-shadow: 0 0 0 2px rgba(29,29,31,0.08); }
.custom-select-trigger .chevron {
  width: 16px; height: 16px; transition: transform 0.2s ease; flex-shrink: 0; margin-left: 8px;
}
.custom-select.open .custom-select-trigger .chevron { transform: rotate(180deg); }
.custom-select-dropdown {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: #FFFFFF; border: 1px solid #E4E4E7; border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  z-index: 1000; overflow: hidden;
  max-height: 0; opacity: 0; transform: translateY(-4px);
  transition: max-height 0.25s ease, opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.custom-select.open { position: relative; z-index: 1001; }
.custom-select.open .custom-select-dropdown {
  max-height: 280px; opacity: 1; transform: translateY(0);
  pointer-events: auto; overflow-y: auto;
}
.custom-select-option {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; font-size: 14px; color: #5A5A5A;
  cursor: pointer; transition: background 0.15s ease;
  border-bottom: 1px solid #F4F4F5;
  background: #FFFFFF;
}
.custom-select-option:last-child { border-bottom: none; }
.custom-select-option:hover { background: #F4F4F5; color: #1A1A1A; }
.custom-select-option.selected { color: #1A1A1A; font-weight: 500; background: #F4F4F5; }
.custom-select-option .option-icon {
  width: 14px; height: 14px; color: #A1A1AA; flex-shrink: 0;
}
.custom-select-option:hover .option-icon { color: #1A1A1A; }

/* ===== BRAND OBJECTS (Node/Edge/Flow) ===== */

/* Stream Lines — horizontal flowing lines with nodes */
.bo-stream-lines {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden; opacity: 0.12;
}
.bo-stream-lines svg { position: absolute; width: 100%; height: 100%; }

/* Orbital Nodes — concentric circles with dots */
.bo-orbital {
  position: absolute; pointer-events: none; opacity: 0.08;
}
.bo-orbital svg { width: 100%; height: 100%; }

/* Process Grid — connected dots grid */
.bo-process-grid {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden; opacity: 0.06;
  background-image: radial-gradient(circle, rgba(255,255,255,0.4) 1px, transparent 1px);
  background-size: 40px 40px;
}
.bo-process-grid::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Hub Radial — lines radiating from center */
.bo-hub-radial {
  position: absolute; pointer-events: none; opacity: 0.07;
}
.bo-hub-radial svg { width: 100%; height: 100%; }

/* Light mode variants */
.bo-process-grid-light {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden; opacity: 0.4;
  background-image: radial-gradient(circle, rgba(0,0,0,0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ===== ARTICLE GUIDE/CTA CARDS ===== */
.guide-card {
  background: var(--n50); border: 1px solid var(--n100);
  border-radius: 16px; padding: 32px; margin: 24px 0;
}
.guide-card .label {
  display: block; font-size: 11px; font-weight: 600; color: var(--n400);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;
}
.guide-card h4 { font-size: 18px; font-weight: 700; color: var(--n900); margin-bottom: 8px; line-height: 1.5; }
.guide-card p { font-size: 14px; color: var(--n600); margin-bottom: 20px; line-height: 1.7; }
.guide-card .guide-btn {
  display: inline-flex; align-items: center; padding: 12px 24px;
  background: var(--n900); color: var(--n0); border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: none; text-decoration: none; transition: all 0.2s ease;
}
.guide-card .guide-btn:hover { background: var(--n700); transform: translateY(-1px); }

.consultation-card {
  background: var(--n900); border-radius: 16px; padding: 32px; margin: 24px 0;
}
.consultation-card .label {
  display: block; font-size: 11px; font-weight: 600; color: var(--n400);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;
}
.consultation-card h4 { font-size: 18px; font-weight: 700; color: var(--n0); margin-bottom: 8px; line-height: 1.5; }
.consultation-card p { font-size: 14px; color: var(--n400); margin-bottom: 20px; line-height: 1.7; }
.consultation-card .consult-btn {
  display: inline-flex; align-items: center; padding: 12px 24px;
  background: var(--n0); color: var(--n900); border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: none; text-decoration: none; transition: all 0.2s ease;
}
.consultation-card .consult-btn:hover { background: var(--n75); }

/* Countdown banner */
.countdown-banner {
  background: linear-gradient(135deg, #1D1D1F 0%, #0C1220 100%);
  color: var(--n0); border-radius: 14px;
  padding: 20px 28px; margin: 32px 0; display: flex; align-items: center; gap: 14px;
  font-size: 15px; font-weight: 500; border: 1px solid rgba(0,226,158,0.3);
  box-shadow: 0 4px 24px rgba(0,226,158,0.12);
}
.countdown-banner .countdown-dot { width: 10px; height: 10px; border-radius: 50%; background: #00E29E; animation: pulse 2s infinite; flex-shrink: 0; box-shadow: 0 0 12px rgba(0,226,158,0.6); }
.countdown-banner .countdown-text { flex: 1; color: #FFFFFF; }
.countdown-banner .countdown-bold { font-weight: 700; color: #00E29E; font-size: 16px; }

/* ===== PDF GUIDE MODAL ===== */
.pdf-modal-overlay {
  position: fixed; inset: 0; z-index: 3000;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; transition: opacity 0.3s ease;
}
.pdf-modal-overlay.show { display: flex; opacity: 1; }
.pdf-modal {
  background: var(--n0); border-radius: 20px; padding: 36px 32px;
  max-width: 460px; width: 100%; max-height: 90vh; overflow-y: auto;
  position: relative; transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 24px 80px rgba(0,0,0,0.3);
}
.pdf-modal-overlay.show .pdf-modal { transform: translateY(0); }
.pdf-modal-close {
  position: absolute; top: 16px; right: 16px;
  background: none; border: none; font-size: 22px; color: var(--n400);
  cursor: pointer; width: 36px; height: 36px; border-radius: 8px;
}
.pdf-modal-close:hover { background: var(--n50); color: var(--n900); }
.pdf-modal h3 { font-size: 22px; font-weight: 700; color: var(--n900); margin-bottom: 6px; }
.pdf-modal .sub { font-size: 14px; color: var(--n500); margin-bottom: 24px; }
.pdf-modal .form-group { margin-bottom: 14px; }
.pdf-modal label { display: block; font-size: 13px; font-weight: 600; color: var(--n700); margin-bottom: 6px; }
.pdf-modal .form-input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--n200); border-radius: 8px;
  background: var(--n0); color: var(--n900); font-size: 14px; font-family: inherit;
}
.pdf-modal .form-input:focus { outline: none; border-color: var(--n900); box-shadow: 0 0 0 2px rgba(29,29,31,0.08); }
.pdf-modal .form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238E8E93' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }
.consent { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--n600); }
.consent input[type="checkbox"] { margin-top: 2px; flex-shrink: 0; }
.pdf-modal .consent { align-items: center; margin: 16px 0; }
.pdf-modal .submit-btn {
  width: 100%; padding: 14px; background: var(--n900); color: var(--n0);
  border: none; border-radius: 8px; font-size: 15px; font-weight: 700;
  cursor: pointer; margin-top: 8px;
}
.pdf-modal .submit-btn:hover { background: var(--n700); }

/* Dark mode for cards/modal */
html.dark .guide-card { background: var(--n50); border-color: var(--n100); }
html.dark .guide-card h4 { color: var(--n900); }
html.dark .guide-card p { color: var(--n600); }
html.dark .pdf-modal { background: var(--n50); }
html.dark .pdf-modal h3 { color: var(--n900); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: var(--n0);
    padding: 16px 20px 24px; border-bottom: 1px solid var(--n100);
    box-shadow: var(--shadow-100); gap: 16px; z-index: 100;
  }
  .nav-links.open a { color: var(--n600); text-align: left; }
  .nav-links.open a:hover { color: var(--n900); }
  .nav-links.open .nav-cta { color: var(--n0) !important; }
  .nav-links.open > a:not(.nav-cta) { width: 100%; }
  .nav-links.open .nav-dropdown-toggle { justify-content: flex-start; width: 100%; }
  .nav-mobile-toggle { display: block; color: var(--n900); }
  /* Mobile dropdown: render flat list */
  .nav-dropdown { display: block; width: 100%; }
  .nav-caret { display: none; }
  .nav-dropdown-menu {
    position: static; transform: none; opacity: 1; visibility: visible;
    pointer-events: auto; box-shadow: none; border: none; padding: 4px 0 0 12px;
    background: transparent;
  }
  .nav-dropdown-menu a { padding: 8px 0; font-size: 13px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .page-hero { padding: 120px 0 48px; }
  .page-hero h1 { font-size: 28px; }
  .page-hero .desc { font-size: 15px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 14px; }
  .container { padding: 0 20px; }

  /* Floating CTA mobile */
  .floating-cta { bottom: 16px; right: 16px; padding: 10px 16px; font-size: 14px; }

  /* Break tags in headings should not force line breaks on mobile */
  h1 br, h2 br, h3 br, .subheadline br, .section-title br, .feature-headline br { display: none; }

  /* Buttons in CTA rows: full width on mobile */
  .cta-row .btn { width: 100%; justify-content: center; }

  /* Images and SVGs */
  img, svg { max-width: 100%; height: auto; }
}