:root {
  --primary: #0f7b6c;
  --primary-dark: #0a5c51;
  --primary-light: #e6f4f1;
  --text: #222b2a;
  --muted: #5d6b69;
  --bg: #ffffff;
  --bg-alt: #f5f9f8;
  --border: #dbe6e4;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1100px, 100% - 32px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800; color: var(--primary-dark); }
.logo-mark {
  display: grid; place-items: center; width: 32px; height: 32px;
  background: var(--primary); color: #fff; border-radius: 8px; font-size: 1.4rem; line-height: 1;
}
.nav { display: flex; align-items: center; gap: 28px; font-weight: 600; }
.nav a:not(.btn):hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.6rem; cursor: pointer; color: var(--text); }

/* Buttons */
.btn {
  display: inline-block; padding: 14px 28px; border-radius: 999px;
  background: var(--primary); color: #fff; font-weight: 700; border: 2px solid var(--primary);
  transition: background .2s, color .2s;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary-dark); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-small { padding: 8px 18px; font-size: .95rem; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--primary-light), #fff 70%); padding: 96px 0 80px; }
.eyebrow { color: var(--primary); font-weight: 700; margin-bottom: 12px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.3; font-weight: 500; }
.hero h1 strong { color: var(--primary-dark); font-weight: 800; }
.hero-sub { margin: 20px 0 32px; color: var(--muted); font-size: 1.1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Quick info */
.quick { margin-top: -36px; position: relative; z-index: 2; }
.quick-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(15, 123, 108, .1);
}
.quick-item { padding: 22px 24px; display: flex; flex-direction: column; gap: 2px; }
.quick-item + .quick-item { border-left: 1px solid var(--border); }
.q-label { color: var(--muted); font-size: .9rem; }
.quick-item strong { font-size: 1.15rem; color: var(--primary-dark); }

/* Sections */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-alt); }
h2 { font-size: 2rem; margin-bottom: 16px; position: relative; }
h2::after { content: ""; display: block; width: 40px; height: 4px; background: var(--primary); border-radius: 2px; margin-top: 10px; }
.lead { color: var(--muted); font-size: 1.1rem; margin-bottom: 32px; }
h3 { font-size: 1.15rem; margin-bottom: 6px; }
.note { margin-top: 16px; font-size: .85rem; color: var(--muted); }

.cards.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.card h3 { color: var(--primary-dark); }
.card p { color: var(--muted); }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.service-grid li {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px;
  transition: transform .2s, box-shadow .2s;
}
.service-grid li:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(15, 123, 108, .12); }
.service-grid h3 { color: var(--primary-dark); }
.service-grid p { color: var(--muted); font-size: .95rem; }

/* Doctor */
.doctor { display: grid; grid-template-columns: 320px 1fr; gap: 48px; align-items: center; }
.doctor-photo {
  aspect-ratio: 4 / 5; display: grid; place-items: center;
  background: var(--primary-light); color: var(--primary); border-radius: var(--radius); font-weight: 700;
}
.doctor-name { font-size: 1.4rem; margin-bottom: 12px; }
.doctor-name span { font-size: 1rem; color: var(--primary); margin-left: 6px; }
.career li { padding-left: 18px; position: relative; color: var(--muted); }
.career li::before { content: ""; position: absolute; left: 0; top: .75em; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }

/* Hours */
.hours-table { width: 100%; max-width: 640px; margin-top: 24px; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.hours-table th, .hours-table td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--border); }
.hours-table thead th { background: var(--primary); color: #fff; }
.hours-table tbody tr:last-child th, .hours-table tbody tr:last-child td { border-bottom: 0; }
.hours-table tr.closed { color: #b23b3b; }
.hours-table tr.today { background: var(--primary-light); font-weight: 700; }
.hours-table tr.today.closed { background: #fdeeee; }

/* Location */
.location { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; }
.info { display: grid; grid-template-columns: 72px 1fr; gap: 10px 12px; margin-top: 20px; }
.info dt { font-weight: 700; color: var(--primary-dark); }
.info a { color: var(--primary); font-weight: 700; }
.map {
  min-height: 320px; display: grid; place-content: center; text-align: center;
  background: var(--bg-alt); border: 2px dashed var(--border); border-radius: var(--radius); color: var(--muted);
}

/* Footer */
.site-footer { background: #17302c; color: #b9cdc9; padding: 40px 0; font-size: .9rem; }
.site-footer strong { color: #fff; }
.site-footer .copy { margin-top: 12px; opacity: .7; }

/* Floating call button (mobile) */
.call-fab {
  display: none; position: fixed; right: 16px; bottom: 16px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%; place-items: center;
  background: var(--primary); color: #fff; font-size: 1.5rem; box-shadow: 0 6px 16px rgba(0, 0, 0, .25);
}

/* Responsive */
@media (max-width: 900px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .cards.three { grid-template-columns: 1fr; }
  .doctor, .location { grid-template-columns: 1fr; }
  .doctor-photo { max-width: 260px; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--border); padding: 8px 16px 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 4px; }
  .nav .btn { text-align: center; margin-top: 8px; }
  .hero { padding: 64px 0 64px; }
  .quick-grid { grid-template-columns: 1fr; }
  .quick-item + .quick-item { border-left: 0; border-top: 1px solid var(--border); }
  .section { padding: 64px 0; }
  .service-grid { grid-template-columns: 1fr; }
  .call-fab { display: grid; }
}