:root {
  --ink: #18212b;
  --muted: #68737f;
  --line: #d9e0e4;
  --accent: #f05a3f;
  --paper: #f7f7f4;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", Arial, sans-serif;
  word-break: keep-all;
}

.page-shell {
  width: min(100% - 40px, 1080px);
  margin: 0 auto;
}

.topbar, footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.brand { color: inherit; text-decoration: none; }
.course, footer { color: var(--muted); }

.hero {
  min-height: 470px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-top: 1px solid var(--line);
}

.eyebrow, .section-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin: 12px 0 20px;
  font-size: clamp(4.2rem, 13vw, 8.5rem);
  line-height: 0.95;
  letter-spacing: -0.085em;
}

.dot { color: var(--accent); }

.intro {
  margin-bottom: 30px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.7;
}

.affiliation {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.interests, .contact {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 2fr;
  gap: 32px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 9px 0 0;
  font-size: 1.55rem;
  letter-spacing: -0.05em;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 11px 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  font-size: 0.95rem;
}

.contact-links { display: grid; align-content: start; gap: 13px; }

.contact-links a {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 14px 0;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  text-decoration: none;
  transition: color 160ms ease, padding-left 160ms ease;
}

.contact-links a:hover, .contact-links a:focus-visible {
  padding-left: 8px;
  color: var(--accent);
}

footer { border-top: 1px solid var(--line); }

@media (max-width: 600px) {
  .page-shell { width: min(100% - 32px, 1080px); }
  .topbar { align-items: flex-start; gap: 16px; }
  .course { max-width: 150px; text-align: right; line-height: 1.45; }
  .hero { min-height: 410px; }
  .interests, .contact { grid-template-columns: 1fr; gap: 24px; }
  footer { gap: 16px; font-size: 0.61rem; }
}