:root {
  --primary: #1f9d8f;
  --primary-dark: #157a6f;
  --accent: #ffb84d;
  --ink: #1d2b2a;
  --muted: #5d6d6b;
  --bg: #ffffff;
  --tint: #f1faf8;
  --line: #dcebe8;
  --radius: 18px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: "Noto Sans KR", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1120px, 100% - 32px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* header */
.header {
  position: fixed; inset: 0 0 auto 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: 68px; }
.logo { font-weight: 700; font-size: 1.25rem; color: var(--primary-dark); }
.logo span { font-weight: 400; font-size: .85rem; margin-left: 4px; color: var(--muted); }
.nav { display: flex; align-items: center; gap: 28px; font-weight: 500; }
.nav a:hover { color: var(--primary); }
.nav__call { background: var(--primary); color: #fff; padding: 8px 18px; border-radius: 999px; }
.nav__call:hover { background: var(--primary-dark); color: #fff !important; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; }

/* hero */
.hero {
  padding: 150px 0 90px;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 184, 77, .35), transparent 38%),
    linear-gradient(135deg, #e6f7f4 0%, #f7fcfb 60%, #fff 100%);
}
.eyebrow { font-size: .8rem; letter-spacing: .18em; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.3; font-weight: 700; }
.hero__sub { margin-top: 18px; color: var(--muted); font-size: 1.1rem; max-width: 520px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hours-chip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.hours-chip li { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 6px 16px; font-size: .92rem; }
.hours-chip b { color: var(--primary-dark); margin-right: 4px; }
.hours-chip em { font-style: normal; color: var(--muted); }

/* buttons */
.btn { display: inline-block; padding: 13px 26px; border-radius: 999px; font-weight: 700; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-dark); }
.btn--ghost { border: 2px solid var(--primary); color: var(--primary-dark); }
.btn--light { background: #fff; color: var(--primary-dark); font-size: 1.15rem; }

/* sections */
.section { padding: 90px 0; }
.section--tint { background: var(--tint); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); margin-bottom: 8px; }
.about { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; align-items: start; }
.about__text p + p { margin-top: 14px; }
.about__text { color: var(--muted); font-size: 1.05rem; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 36px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(31, 157, 143, .12); }
.card__no { display: inline-block; font-weight: 700; color: var(--accent); font-size: 1.1rem; margin-bottom: 6px; }
.card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: .95rem; }
.card ul { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: .9rem; }
.card li { padding-left: 14px; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: .7em; width: 5px; height: 5px; border-radius: 50%; background: var(--primary); }

.doctor { display: grid; grid-template-columns: 340px 1fr; gap: 56px; align-items: center; }
.doctor__photo {
  aspect-ratio: 4 / 5; border-radius: var(--radius);
  background: linear-gradient(160deg, #cfeee9, #fff1d6);
  display: grid; place-items: center; color: var(--muted);
}
.doctor__name { font-size: 1.35rem; margin: 12px 0; }
.doctor__name small { font-size: .9rem; color: var(--muted); margin-left: 6px; }
.doctor__career { margin-top: 16px; color: var(--muted); }

.location { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 32px 0; }
.info, .hours { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.info div { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.info div:last-child { border: 0; }
.info dt { width: 52px; font-weight: 700; color: var(--primary-dark); }
.hours { border-collapse: separate; width: 100%; }
.hours th, .hours td { padding: 9px 0; text-align: left; border-bottom: 1px solid var(--line); }
.hours tr:last-child th, .hours tr:last-child td { border: 0; }
.hours th { width: 40%; color: var(--primary-dark); }

.empty { color: var(--muted); margin-top: 16px; }

.cta { background: linear-gradient(120deg, var(--primary), var(--primary-dark)); color: #fff; padding: 64px 0; text-align: center; }
.cta h2 { margin-bottom: 24px; }

.footer { background: #14211f; color: #b7c6c3; padding: 40px 0 20px; font-size: .9rem; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.footer strong { color: #fff; font-size: 1.05rem; }
.footer__links { display: flex; gap: 18px; }
.footer__links a:hover { color: #fff; }
.copy { text-align: center; margin-top: 28px; font-size: .8rem; opacity: .7; }

/* responsive */
@media (max-width: 1000px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .about, .doctor, .location { grid-template-columns: 1fr; gap: 24px; }
  .doctor__photo { max-width: 300px; }
  .section { padding: 64px 0; }
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { width: 100%; padding: 14px 24px; }
  .nav__call { border-radius: 0; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}