/* Burlingate Partners — site styles */
:root {
  --ink: #1c2230;
  --slate: #3f4658;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --accent: #2f5fd8;
  --accent-ink: #1e3f9a;
  --max: 1120px;
  --radius: 10px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; }
p { margin: 0 0 1em; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.lead { font-size: 20px; color: var(--muted); max-width: 640px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 8px;
  font-weight: 600; font-size: 15px; line-height: 1;
  border: 1px solid transparent; transition: background .18s, color .18s, border-color .18s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--slate); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--ink); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand img { height: 52px; width: auto; margin-left: -14px; }
.nav { display: flex; align-items: center; gap: 32px; }
.nav a { font-size: 15px; font-weight: 500; color: var(--slate); }
.nav a:hover, .nav a.active { color: var(--ink); }
.nav .btn { padding: 10px 16px; }
.nav .btn-primary { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* Hero */
.hero { position: relative; padding: 112px 0 96px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 55% at 85% 10%, rgba(47,95,216,.10), transparent 70%),
    linear-gradient(#fff, #fff);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 0%, #000 20%, transparent 100%);
          mask-image: radial-gradient(70% 70% at 50% 0%, #000 20%, transparent 100%);
}
.hero h1 { font-size: clamp(38px, 6vw, 64px); max-width: 820px; margin-bottom: 22px; }
.hero .lead { margin-bottom: 36px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; margin-top: 64px; padding-top: 32px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.hero-stats div strong { display: block; font-size: 15px; font-weight: 600; }
.hero-stats div span { font-size: 14px; color: var(--muted); }

/* Sections */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 680px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.section-head p { color: var(--muted); font-size: 18px; }

.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.split h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 20px; }
.split p { color: var(--slate); }

.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: border-color .18s, transform .18s;
}
.card:hover { border-color: #c9cdd6; transform: translateY(-2px); }
.card .num { font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: .08em; margin-bottom: 20px; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15.5px; margin: 0; }

.pillar { padding: 0; border: 0; background: none; }
.pillar:hover { transform: none; }
.pillar .icon {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: var(--bg-soft); border: 1px solid var(--line); margin-bottom: 18px;
}
.pillar .icon svg { width: 20px; height: 20px; stroke: var(--ink); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* Process */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step { padding: 32px 24px 0 0; border-right: 1px solid var(--line); }
.step:last-child { border-right: 0; }
.step + .step { padding-left: 24px; }
.step .k { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--muted); margin: 0; }

/* CTA band */
.cta { background: var(--ink); color: #fff; padding: 80px 0; }
.cta .container { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta h2 { font-size: clamp(26px, 3.6vw, 36px); margin-bottom: 8px; }
.cta p { color: #b8bec9; margin: 0; }
.cta .btn-primary { background: #fff; color: var(--ink); }
.cta .btn-primary:hover { background: #e9ebf0; }

/* Contact page */
.page-head { padding: 88px 0 48px; }
.page-head h1 { font-size: clamp(36px, 5vw, 56px); margin-bottom: 16px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; padding-bottom: 96px; }
.contact-info dl { margin: 0; }
.contact-info dt { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-top: 28px; }
.contact-info dd { margin: 6px 0 0; font-size: 18px; }
.contact-info dd a:hover { color: var(--accent); }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.form label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form .field { margin-bottom: 18px; }
.form input, .form textarea {
  width: 100%; font: inherit; font-size: 15.5px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(47,95,216,.12); }
.form textarea { min-height: 150px; resize: vertical; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form .note { font-size: 13px; color: var(--muted); margin: 14px 0 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 48px 0; font-size: 14px; color: var(--muted); }
.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.site-footer .links { display: flex; gap: 24px; }
.site-footer a:hover { color: var(--ink); }

/* Responsive */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step { border-right: 0; padding-right: 0; }
  .step + .step { padding-left: 0; }
  .step:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 24px; }
  .step:nth-child(even) { padding-left: 24px; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .hero { padding: 72px 0 64px; }
  .section { padding: 64px 0; }
  .grid-4, .grid-3, .grid-2, .form .row { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step, .step:nth-child(odd) { border-right: 0; padding: 28px 0 0; }
  .step:nth-child(even) { padding-left: 0; }
  .hero-stats { gap: 24px; }
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 72px;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; width: 100%; }
  .nav .btn { margin-top: 8px; justify-content: center; }
  .site-footer .container { flex-direction: column; align-items: flex-start; }
}