/* eins square — CI Guide A 기반 (CI 04 색상 / CI 05 서체 / CI 07 모티브) */
:root {
  --deep-blue: #1A317A;
  --arc-orange: #E06A3B;
  --steel-gray: #505050;
  --mist: #EEF1F6;
  --white: #FFFFFF;
  --line: #DDE2EC;

  --font-ko: "Pretendard", -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-en: "Sora", var(--font-ko);
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--font-ko);
  color: var(--steel-gray);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); letter-spacing: .08em; }

/* ---------- Brand ---------- */
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--deep-blue); }
.brand-symbol { width: 32px; height: 32px; flex: none; --sym-line: var(--deep-blue); --sym-joint: var(--arc-orange); }
.brand-word { font-family: var(--font-en); font-size: 22px; font-weight: 300; letter-spacing: -.01em; line-height: 1; }
.brand-word b { font-weight: 700; }
.brand-reverse { color: var(--white); }
.brand-reverse .brand-symbol { --sym-line: var(--white); }
.brand-ko { font-weight: 600; font-size: 15px; padding-left: 12px; margin-left: 4px; border-left: 1px solid rgba(255,255,255,.3); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav { display: flex; gap: 32px; font-weight: 600; font-size: 15px; color: var(--deep-blue); }
.nav a:hover { opacity: .7; }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--deep-blue); color: var(--white); overflow: hidden; }
.hero-inner { padding-top: 120px; padding-bottom: 260px; position: relative; z-index: 1; }
.eyebrow { font-size: 12px; color: rgba(255,255,255,.6); margin-bottom: 28px; }
.hero-title {
  font-family: var(--font-en); font-weight: 600;
  font-size: clamp(48px, 8vw, 104px); line-height: 1.02; letter-spacing: -.02em;
}
.hero-sub { font-size: clamp(20px, 2.4vw, 28px); font-weight: 500; margin-top: 20px; }
.hero-desc { font-size: 17px; color: rgba(255,255,255,.75); margin-top: 28px; }
.btn {
  display: inline-block; margin-top: 40px;
  padding: 14px 28px; border: 1.5px solid rgba(255,255,255,.8);
  font-weight: 600; font-size: 15px; transition: background .2s, color .2s;
}
.btn:hover { background: var(--white); color: var(--deep-blue); }

.spool-line { position: absolute; left: 0; bottom: 0; width: 100%; height: 220px; }
.spool-line path { fill: none; stroke-width: 10; }
.spool-line .line-main { stroke: var(--white); }
.spool-line .line-sub { stroke: rgba(255,255,255,.22); }
.spool-line .joint { fill: var(--arc-orange); }
.joint-label { font-family: var(--font-mono); font-size: 12px; fill: rgba(255,255,255,.6); text-anchor: middle; letter-spacing: .08em; }

/* ---------- Sections ---------- */
.section { padding: 112px 0; }
.section-mist { background: var(--mist); }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 48px;
}
.section-head h2 { font-size: 36px; font-weight: 700; color: var(--deep-blue); line-height: 1.2; }
.section-head h2 span { font-family: var(--font-en); font-weight: 300; font-size: 20px; color: var(--steel-gray); margin-left: 10px; }
.section-code { font-size: 12px; color: #8A8F99; }

/* ---------- Business cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card {
  position: relative; padding: 48px 40px 40px;
  background: var(--white); border: 1px solid var(--line);
}
/* CI 07 C. Corner Bend 모티브 */
.card::before {
  content: ""; position: absolute; top: 20px; left: 20px;
  width: 28px; height: 28px;
  border-top: 4px solid var(--deep-blue); border-left: 4px solid var(--deep-blue);
  border-top-left-radius: 8px;
}
.card-no { font-size: 13px; color: #8A8F99; margin-bottom: 20px; text-align: right; }
.card h3 { font-size: 26px; font-weight: 700; color: var(--deep-blue); line-height: 1.35; }
.card-en { font-family: var(--font-en); font-size: 14px; color: #8A8F99; margin-top: 6px; }
.card-desc { margin-top: 24px; font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.tags li { font-size: 11px; padding: 6px 10px; background: var(--mist); color: var(--deep-blue); }

/* ---------- Contact ---------- */
.contact-list { background: var(--white); }
.contact-row {
  display: grid; grid-template-columns: 160px 1fr; align-items: baseline;
  padding: 28px 32px; border-bottom: 1px solid var(--line);
}
.contact-row:last-child { border-bottom: 0; }
.contact-row dt { font-size: 13px; color: #8A8F99; }
.contact-row dd { font-size: 20px; font-weight: 600; color: var(--deep-blue); }
.tbd { color: #A0A5AF; font-weight: 500; }
.map-links { display: inline-flex; gap: 8px; margin-left: 16px; vertical-align: middle; }
.map-links a {
  font-size: 13px; font-weight: 600; padding: 6px 12px;
  border: 1px solid var(--line); color: var(--steel-gray);
}
.map-links a:hover { border-color: var(--deep-blue); color: var(--deep-blue); }

/* ---------- Footer ---------- */
.site-footer { background: var(--deep-blue); color: rgba(255,255,255,.7); padding: 56px 0; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 40px; }
.footer-info { font-size: 14px; }
.footer-copy { font-size: 11px; margin-left: auto; color: rgba(255,255,255,.5); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .wrap { padding: 0 16px; }
  .header-inner { height: 60px; }
  .brand-word { font-size: 19px; }
  .brand-symbol { width: 28px; height: 28px; }
  .nav { gap: 18px; font-size: 14px; }
  .hero-inner { padding-top: 72px; padding-bottom: 200px; }
  .eyebrow { font-size: 10px; }
  .hero-desc { font-size: 15px; }
  .br-pc { display: none; }
  .spool-line { height: 160px; }
  .section { padding: 72px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-head h2 { font-size: 28px; }
  .cards { grid-template-columns: 1fr; }
  .card { padding: 44px 24px 28px; }
  .card h3 { font-size: 22px; }
  .contact-row { grid-template-columns: 1fr; gap: 6px; padding: 22px 20px; }
  .contact-row dd { font-size: 17px; }
  .map-links { display: flex; margin: 12px 0 0; }
  .brand-ko { display: none; }
  .footer-copy { margin-left: 0; }
}