* {
  box-sizing: border-box;
}

:root {
  --bg: #f6f8fb;
  --card: rgba(255, 255, 255, 0.88);
  --text: #111827;
  --muted: #64748b;
  --blue: #2563eb;
  --blue-dark: #1e40af;
  --green: #16a34a;
  --line: rgba(15, 23, 42, 0.10);
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.10);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.16), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(22, 163, 74, 0.12), transparent 28rem),
    var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 32px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 48px;
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(255,255,255,0.72));
  box-shadow: var(--shadow);
}

.hero::after {
  content: "</>";
  position: absolute;
  right: 42px;
  bottom: 34px;
  font-size: clamp(90px, 18vw, 190px);
  font-weight: 900;
  color: rgba(37, 99, 235, 0.08);
  letter-spacing: -0.08em;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  letter-spacing: 0.32em;
  font-weight: 700;
  color: #1f2937;
}

.dot {
  width: 13px;
  height: 13px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 0 7px rgba(37, 99, 235, 0.10);
}

h1 {
  margin: 34px 0 14px;
  font-size: clamp(42px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.06em;
}

.role {
  margin: 0 0 30px;
  font-size: 17px;
  color: #334155;
}

.headline {
  max-width: 680px;
  margin: 0 0 14px;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.045em;
  font-weight: 850;
  color: var(--blue-dark);
}

.sub {
  max-width: 680px;
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  word-break: keep-all;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.primary-btn,
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
}

.primary-btn {
  background: var(--blue);
  color: white;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.26);
}

.ghost-btn {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  color: #1f2937;
}

.section {
  margin-top: 28px;
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--card);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(12px);
}

.section-title {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
}

.section-title p,
.mini-title {
  margin: 0;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.28em;
  color: var(--blue);
}

.section-title h2 {
  margin: 8px 0 0;
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: -0.05em;
}

.contact-section h2 {
  max-width: 560px;
  margin: 8px 0 0;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.4;
  letter-spacing: -0.03em;
}

.app-grid {
  display: grid;
  gap: 18px;
}

.app-card {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 22px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(255,255,255,0.72);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.app-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.app-icon {
  width: 92px;
  height: 92px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: white;
  box-shadow: 0 18px 28px rgba(15,23,42,0.14);
}

.app-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.system-icon {
  background: rgba(37, 99, 235, 0.08);
}

.system-icon svg {
  width: 58%;
  height: 58%;
}

.links .tag {
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(100, 116, 139, 0.10);
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.app-content h3 {
  margin: 4px 0 8px;
  font-size: 22px;
  letter-spacing: -0.04em;
}

.app-content p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.links a {
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 800;
}

.contact-section {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 28px;
  align-items: center;
}

.contact-card {
  display: grid;
  gap: 10px;
  padding: 22px;
  border-radius: 24px;
  background: #0f172a;
  color: white;
}

.contact-card a {
  font-weight: 800;
  word-break: break-all;
}

footer {
  padding: 28px 8px 0;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

@media (max-width: 720px) {
  .page {
    width: min(100% - 22px, 1040px);
    padding-top: 22px;
  }

  .hero,
  .section {
    padding: 28px;
    border-radius: 26px;
  }

  .hero {
    min-height: auto;
  }

  .hero::after {
    display: none;
  }

  .badge {
    letter-spacing: 0.18em;
    font-size: 11px;
  }

  h1 {
    margin-top: 28px;
  }

  .sub {
    max-width: 100%;
  }

  .app-card {
    grid-template-columns: 1fr;
  }

  .contact-section {
    grid-template-columns: 1fr;
  }

  .contact-section h2 {
    max-width: 100%;
    font-size: 19px;
  }
}