:root {
  --bg: #1f2024;
  --surface: #2a2c31;
  --surface-2: #33363c;
  --line: #42454c;
  --text: #f5f5f5;
  --muted: #a8abb2;
  --accent: #c8ff3d;
  --accent-ink: #1f2024;
  --radius: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.6;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* 헤더 */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(31,32,36,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { font-size: 20px; font-weight: 800; letter-spacing: -0.5px; white-space: nowrap; }
.logo span { color: var(--accent); }
.menu { display: flex; gap: 28px; font-size: 15px; color: var(--muted); }
.menu a:hover, .menu a.active { color: var(--text); }
.menu a.active { font-weight: 700; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 20px; border-radius: 999px;
  font-weight: 700; font-size: 15px; border: 0; cursor: pointer; white-space: nowrap;
  transition: transform .15s, opacity .15s; font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }

/* 히어로 (메인) */
.hero { padding: 96px 0 72px; text-align: center; }
.badge {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line);
  font-size: 13px; color: var(--muted); margin-bottom: 24px;
}
.hero h1 { font-size: clamp(34px, 6vw, 60px); font-weight: 800; line-height: 1.2; letter-spacing: -1.5px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p { margin-top: 18px; color: var(--muted); font-size: clamp(16px, 2.2vw, 19px); }

.search {
  margin: 40px auto 0; max-width: 720px;
  display: grid; grid-template-columns: 1fr 1fr auto; gap: 8px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 8px;
}
.search select {
  appearance: none; background: transparent; color: var(--text);
  border: 0; padding: 0 20px; font: inherit; font-size: 15px; height: 48px; cursor: pointer;
}
.search select option { background: var(--surface); }
.search select + select { border-left: 1px solid var(--line); }
.search .btn { height: 48px; padding: 0 28px; }

.stats { display: flex; justify-content: center; gap: 48px; margin-top: 56px; flex-wrap: wrap; }
.stat b { display: block; font-size: 28px; font-weight: 800; }
.stat span { color: var(--muted); font-size: 14px; }

/* 서브 페이지 상단 */
.page-hero { padding: 72px 0 48px; }
.page-hero small { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 1px; }
.page-hero h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 800; letter-spacing: -1px; margin-top: 6px; }
.page-hero p { color: var(--muted); margin-top: 10px; font-size: 17px; }

/* 섹션 공통 */
section { padding: 80px 0; border-top: 1px solid var(--line); }
.sec-head { margin-bottom: 40px; display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.sec-head small { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 1px; }
.sec-head h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; letter-spacing: -1px; margin-top: 6px; }
.sec-head p { color: var(--muted); margin-top: 8px; }
.more { color: var(--accent); font-weight: 700; font-size: 15px; white-space: nowrap; }

/* 과목 카드 */
.subjects { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.subject {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 20px; transition: border-color .2s, background .2s;
}
.subject:hover { border-color: var(--accent); background: var(--surface-2); }
.subject .ico { font-size: 28px; }
.subject b { display: block; margin-top: 12px; font-size: 17px; }
.subject span { color: var(--muted); font-size: 13px; }

/* 과목 상세 */
.subject-detail {
  display: grid; grid-template-columns: 220px 1fr; gap: 32px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; margin-bottom: 16px;
}
.subject-detail .ico { font-size: 40px; }
.subject-detail h2 { font-size: 26px; font-weight: 800; margin-top: 8px; }
.subject-detail .lead { color: var(--muted); font-size: 14px; margin-top: 4px; }
.subject-detail ul { list-style: none; display: grid; gap: 10px; }
.subject-detail li { padding-left: 22px; position: relative; color: #dcdde0; }
.subject-detail li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.subject-detail .actions { display: flex; gap: 8px; margin-top: 20px; flex-wrap: wrap; }

/* 과목 바로가기 */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.chip {
  padding: 8px 16px; border-radius: 999px; font-size: 14px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line); color: var(--muted); font-family: inherit;
}
.chip:hover { color: var(--text); }
.chip.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }

/* 선생님 카드 */
.tutors { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.tutor {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; display: flex; flex-direction: column; gap: 14px;
}
.tutor[hidden] { display: none; }
.tutor-top { display: flex; align-items: center; gap: 14px; }
.avatar {
  width: 56px; height: 56px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center; font-weight: 800; font-size: 20px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--accent);
}
.tutor-top b { font-size: 17px; }
.tutor-top span { display: block; color: var(--muted); font-size: 13px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); }
.tutor p { color: #dcdde0; font-size: 14px; }
.tutor-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.price b { font-size: 18px; }
.price span { color: var(--muted); font-size: 13px; }
.tutor-foot a { color: var(--accent); font-weight: 700; font-size: 14px; }
.empty { color: var(--muted); padding: 40px 0; text-align: center; display: none; }
.tutor .where { color: var(--muted); font-size: 13px; }
.muted-sm { color: var(--muted); font-size: 13px; }

/* 선생님 검색 */
.tsearch { display: grid; grid-template-columns: 1fr auto; gap: 12px; margin-bottom: 24px; }
.tsearch input {
  height: 60px; padding: 0 24px; border-radius: 16px; font: inherit; font-size: 16px;
  background: var(--surface); color: var(--text); border: 1px solid var(--line);
}
.tsearch input:focus { outline: none; border-color: var(--accent); }
.tsearch .btn { height: 60px; padding: 0 36px; border-radius: 16px; font-size: 17px; }
.filters { display: grid; gap: 12px; margin-bottom: 32px; }
.filter-row { display: grid; grid-template-columns: 76px 1fr; align-items: start; gap: 8px; }
.filter-label { font-size: 14px; font-weight: 700; color: var(--muted); padding-top: 9px; }
.filter-row .chips { margin-bottom: 0; }
.tutor-count { color: var(--muted); font-weight: 700; margin-bottom: 16px; }
.tutor-count b { color: var(--text); }
@media (max-width: 760px) {
  .tsearch input, .tsearch .btn { height: 52px; }
  .tsearch .btn { padding: 0 20px; }
  .filter-row { grid-template-columns: 1fr; gap: 6px; }
  .filter-label { padding-top: 0; }
}

/* 이용 방법 */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; counter-reset: step; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; color: var(--accent); font-weight: 800; font-size: 14px; margin-bottom: 14px;
}
.step b { font-size: 18px; }
.step p { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* 장점 */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.feature { display: flex; gap: 16px; padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.feature .ico { font-size: 24px; }
.feature b { font-size: 17px; }
.feature p { color: var(--muted); font-size: 14px; margin-top: 4px; }

/* 자주 묻는 질문 */
.faq { display: grid; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; }
.faq summary { font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin-top: 12px; font-size: 15px; }

/* 상담 신청 */
.cta-box {
  background: var(--surface); border: 1px solid var(--line); border-radius: 24px;
  padding: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.cta-box h2 { font-size: clamp(26px, 4vw, 34px); font-weight: 800; letter-spacing: -1px; }
.cta-box h2 em { font-style: normal; color: var(--accent); }
.cta-box > div > p { color: var(--muted); margin-top: 10px; }
.cta-box .btn { margin-top: 24px; }
.cta-banner { text-align: center; }
.cta-banner.cta-box { grid-template-columns: 1fr; }
form { display: grid; gap: 10px; }
form input, form select, form textarea {
  width: 100%; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; font: inherit; font-size: 15px;
}
form input:focus, form select:focus, form textarea:focus { outline: none; border-color: var(--accent); }
form textarea { resize: vertical; min-height: 110px; }
form .btn { height: 50px; border-radius: 12px; margin-top: 0; }
.form-msg { color: var(--accent); font-size: 14px; display: none; }
.contact-info { display: grid; gap: 14px; margin-top: 28px; }
.contact-info div { display: flex; gap: 12px; color: var(--muted); font-size: 15px; }
.contact-info b { color: var(--text); min-width: 64px; }

footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer nav { display: flex; gap: 18px; }
footer nav a:hover { color: var(--text); }

@media (max-width: 760px) {
  .nav { flex-wrap: wrap; height: auto; padding-top: 12px; }
  .menu {
    order: 3; width: 100%; gap: 22px; overflow-x: auto;
    padding: 10px 0 12px; font-size: 14px; scrollbar-width: none;
  }
  .menu::-webkit-scrollbar { display: none; }
  .menu a { white-space: nowrap; }
  .nav .btn { height: 38px; padding: 0 16px; font-size: 14px; }
  .search { grid-template-columns: 1fr; border-radius: 20px; }
  .search select + select { border-left: 0; border-top: 1px solid var(--line); }
  .search .btn { border-radius: 14px; }
  .cta-box { grid-template-columns: 1fr; padding: 28px 20px; }
  .subject-detail { grid-template-columns: 1fr; gap: 16px; padding: 24px 20px; }
  .stats { gap: 28px; }
  section { padding: 60px 0; }
  .hero { padding: 64px 0 48px; }
  .page-hero { padding: 48px 0 32px; }
}