:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f0f4ff;
  --text: #1b2430;
  --muted: #5f6b7a;
  --primary: #0b57d0;
  --primary-dark: #083b8a;
  --accent: #19a1ff;
  --border: #dbe3ee;
  --success: #1f9d62;
  --shadow: 0 18px 50px rgba(12, 30, 66, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.section { padding: 88px 0; }
.section-sm { padding: 64px 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.2;
  margin: 12px 0 16px;
}
.section-desc { color: var(--muted); max-width: 760px; }
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: .2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #fff; color: var(--primary); border-color: var(--border); }
.btn-ghost { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.24); }
.badge {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eaf2ff;
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(245, 247, 251, 0.78);
  border-bottom: 1px solid rgba(219, 227, 238, 0.8);
}
.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.02em;
}
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(11, 87, 208, 0.26);
}
.logo-text small { display: block; color: var(--muted); font-size: 12px; font-weight: 700; }
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  color: var(--muted);
  font-weight: 700;
  font-size: 15px;
}
.nav a:hover,
.nav a.active { color: var(--primary); }
.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
}
.mobile-panel {
  display: none;
  position: fixed;
  inset: 78px 0 auto 0;
  background: rgba(255,255,255,.98);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.mobile-panel.open { display: block; }
.mobile-panel nav { display: grid; padding: 18px 20px 24px; gap: 10px; }
.mobile-panel a {
  padding: 14px 16px;
  border-radius: 14px;
  background: #f7faff;
  font-weight: 700;
  color: var(--text);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 20%, rgba(25,161,255,.18), transparent 32%),
    radial-gradient(circle at 80% 15%, rgba(11,87,208,.16), transparent 28%),
    linear-gradient(135deg, #0d1b3a 0%, #12356f 55%, #0b57d0 100%);
  color: #fff;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -180px auto;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: rgba(255,255,255,.07);
  filter: blur(8px);
}
.hero-inner {
  position: relative;
  z-index: 1;
  min-height: 720px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 34px;
  align-items: center;
  padding: 84px 0;
}
.hero-copy h1 {
  font-size: clamp(38px, 5vw, 66px);
  line-height: 1.12;
  margin: 18px 0;
  letter-spacing: -0.03em;
}
.hero-copy p {
  color: rgba(255,255,255,.82);
  font-size: 18px;
  max-width: 660px;
}
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-stats {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px;
}
.stat-box {
  padding: 18px 18px 16px;
  border-radius: 18px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.14);
}
.stat-box strong { display: block; font-size: 28px; margin-bottom: 4px; }
.stat-box span { font-size: 14px; color: rgba(255,255,255,.78); }
.hero-panel {
  padding: 26px;
  border-radius: 28px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 25px 70px rgba(2, 16, 46, 0.28);
}
.hero-panel .panel-top {
  display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 20px;
}
.panel-title { font-size: 22px; font-weight: 800; }
.panel-grid { display: grid; gap: 14px; }
.panel-item {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255,255,255,.94);
  color: var(--text);
}
.panel-item small { color: var(--muted); display: block; margin-bottom: 8px; font-weight: 700; }
.panel-item strong { display: block; font-size: 20px; }
.panel-item p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

/* General sections */
.highlight-strip {
  margin-top: -44px;
  position: relative;
  z-index: 4;
}
.strip-card {
  padding: 28px;
}
.feature-card, .service-card, .project-card, .process-card, .contact-card, .value-card {
  padding: 28px;
}
.icon-bubble {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #e9f2ff, #d8f0ff);
  color: var(--primary);
  font-weight: 900;
  margin-bottom: 18px;
}
.feature-card h3,
.service-card h3,
.project-card h3,
.process-card h3,
.value-card h3 { margin: 0 0 10px; font-size: 22px; }
.feature-card p,
.service-card p,
.project-card p,
.process-card p,
.value-card p,
.contact-card p { margin: 0; color: var(--muted); }
.project-meta,
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.project-meta span,
.service-tags span {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: #eef5ff;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
}
.info-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 12px;
}
.info-list li {
  display: flex;
  gap: 10px;
  color: var(--muted);
}
.info-list li::before {
  content: "•";
  color: var(--primary);
  font-weight: 900;
}
.metric-card {
  padding: 30px;
  text-align: center;
}
.metric-card strong {
  display: block;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1;
  margin-bottom: 10px;
  color: var(--primary);
}
.metric-card span { color: var(--muted); font-weight: 700; }
.timeline { display: grid; gap: 16px; }
.timeline-step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  padding: 24px;
}
.step-no {
  width: 72px;
  height: 72px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 22px;
}
.step-body h3 { margin: 0 0 8px; }
.step-body p { margin: 0; color: var(--muted); }

/* Page hero */
.page-hero {
  background: linear-gradient(135deg, #0d1b3a 0%, #12356f 60%, #0b57d0 100%);
  color: #fff;
  padding: 86px 0 74px;
}
.page-hero h1 {
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.15;
  margin: 14px 0 12px;
}
.page-hero p { color: rgba(255,255,255,.84); max-width: 780px; font-size: 18px; }
.breadcrumbs {
  display: flex; gap: 10px; flex-wrap: wrap; color: rgba(255,255,255,.72); font-size: 14px; font-weight: 700;
}
.breadcrumbs span::after { content: "/"; margin-left: 10px; opacity: .6; }
.breadcrumbs span:last-child::after { display: none; }

/* Contact */
.contact-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 26px; }
.contact-card h3 { margin-top: 0; }
.contact-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 16px;
}
.contact-list li {
  display: grid;
  gap: 6px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--border);
}
.contact-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-list strong { font-size: 14px; color: var(--muted); }
.contact-form { padding: 30px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 700; font-size: 14px; }
.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11,87,208,.12);
}
.form-note { margin-top: 14px; color: var(--muted); font-size: 14px; }
.form-result {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #edf9f2;
  color: var(--success);
  font-weight: 700;
}
.form-result.show { display: block; }

/* Footer */
.site-footer {
  background: #0d1730;
  color: rgba(255,255,255,.78);
  padding: 54px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 24px;
}
.footer-title { color: #fff; margin: 0 0 12px; font-size: 18px; }
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.footer-bottom {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

/* Helpers */
.bg-white { background: #fff; }
.bg-soft { background: #f8fbff; }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-12 { margin-top: 12px; }
.mt-20 { margin-top: 20px; }
.mt-28 { margin-top: 28px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.mb-0 { margin-bottom: 0; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner,
  .contact-layout,
  .footer-grid,
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; }
  .contact-layout,
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav, .header-cta { display: none; }
  .menu-toggle { display: inline-grid; place-items: center; }
  .hero-inner { min-height: auto; padding: 64px 0 72px; }
  .hero-stats { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .grid-4, .grid-3, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .timeline-step { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 72px; }
  .mobile-panel { inset-top: 72px; }
  .hero-copy p, .page-hero p { font-size: 16px; }
  .btn { width: 100%; }
  .hero-actions { display: grid; }
  .strip-card,
  .feature-card,
  .service-card,
  .project-card,
  .process-card,
  .contact-card,
  .contact-form,
  .value-card,
  .metric-card { padding: 22px; }
}