:root {
  --ink: #111827;
  --ink-soft: #374151;
  --muted: #6b7280;
  --paper: #f7f5f1;
  --white: #ffffff;
  --line: #d7dbe2;
  --line-strong: #111827;
  --mark: #c41e3a;
  --mark-soft: #f8e8ea;
  --slate: #eef2f6;
  --ok: #1f4d3a;
  --warn: #7a2e22;
  --max: 1120px;
  --header: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
#contact, #courses, #syllabus, #sample, #faq, #limits, #who, #method, #sources, #top {
  scroll-margin-top: 88px;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.7;
}
body.modal-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, input, select, textarea, label { font: inherit; }
button { color: inherit; }
h1, h2, h3 {
  font-family: "Noto Serif KR", "Apple Myungjo", serif;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.35;
}
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; z-index: 1300; top: 10px; left: 10px; padding: 10px 14px;
  background: var(--white); border: 1px solid var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }

.notice-bar {
  padding: 8px 16px;
  background: var(--ink);
  color: #f4f1ea;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.01em;
}
.notice-bar span { color: #f3c5cb; }

.topbar {
  position: sticky; top: 0; z-index: 80;
  height: var(--header);
  background: rgba(247, 245, 241, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
}
.brand-mark svg { width: 18px; height: 18px; }
.brand strong { display: block; font-size: 17px; }
.brand small { display: block; color: var(--muted); font-size: 11px; font-weight: 700; }
.site-nav { display: flex; align-items: center; gap: 20px; }
.site-nav a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--mark); }
.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
}
.menu-toggle span:not(.sr-only) {
  display: block; width: 20px; height: 2px; margin: 5px auto; background: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { color: var(--white); background: var(--ink); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--mark); border-color: var(--mark); }
.btn-ghost {
  color: var(--ink);
  background: transparent;
  border: 0;
  min-height: auto;
  padding: 0;
  text-decoration: underline;
  font-size: 13px;
}

.hero { padding: 56px 0 28px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.kicker {
  margin: 0 0 12px;
  color: var(--mark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hero h1 { margin: 0 0 16px; font-size: clamp(32px, 5vw, 50px); }
.lead { margin: 0 0 24px; color: var(--ink-soft); font-size: 18px; max-width: 38em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.rule-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.rule-list li {
  padding-left: 14px;
  border-left: 3px solid var(--mark);
  font-size: 14px;
  font-weight: 700;
}
.hero-visual { position: relative; }
.hero-caption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 10px 12px;
  background: var(--white);
  border: 1px solid var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.legal-strip {
  margin-top: 36px;
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  display: grid;
  gap: 6px;
}
.legal-strip strong { font-size: 14px; }
.legal-strip p { margin: 0; color: var(--ink-soft); font-size: 13px; }

.section { padding: 72px 0; }
.section-alt { background: var(--white); border-block: 1px solid var(--line); }
.section-ink { background: var(--ink); color: #f4f1ea; }
.section-ink .kicker { color: #f3c5cb; }
.section-ink p { color: #d1d5db; }
.heading { margin-bottom: 32px; max-width: 40em; }
.heading h2 { margin: 0 0 10px; font-size: clamp(26px, 3.4vw, 36px); }
.heading p { margin: 0; color: var(--ink-soft); }
.section-ink .heading p { color: #d1d5db; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.panel {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}
.panel h3 { margin: 0 0 12px; font-size: 22px; }
.panel ul { margin: 0; padding-left: 18px; }
.panel li + li { margin-top: 8px; }
.panel-limit { border-color: var(--ink); background: var(--slate); }

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.course {
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
}
.course .idx {
  color: var(--mark);
  font-family: "Noto Serif KR", serif;
  font-size: 13px;
  font-weight: 700;
}
.course h3 { margin: 8px 0 10px; font-size: 24px; }
.course p { margin: 0 0 14px; color: var(--ink-soft); }
.course ol { margin: 0 0 18px; padding-left: 18px; flex: 1; }
.course li + li { margin-top: 6px; }
.course-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.price { font-weight: 800; }
.price small { display: block; color: var(--muted); font-weight: 600; }

.week-table, .compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: 14px;
}
.week-table th, .week-table td,
.compare-table th, .compare-table td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.week-table th, .compare-table th { background: var(--slate); font-size: 13px; }
.table-scroll { overflow-x: auto; }

.sample {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: start;
}
.doc-card {
  background: var(--white);
  border: 1px solid var(--ink);
}
.doc-head {
  padding: 14px 18px;
  background: var(--ink);
  color: #f4f1ea;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
}
.doc-body { padding: 8px 0; }
.doc-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.doc-row.is-mark { background: var(--mark-soft); }
.notes { display: grid; gap: 12px; }
.note {
  padding: 16px 18px;
  background: var(--white);
  border-left: 3px solid var(--mark);
}
.note strong { display: block; margin-bottom: 4px; }
.note p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.hour-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}
.steps { margin: 0; padding: 0; list-style: none; }
.steps li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.steps span {
  font-family: "Noto Serif KR", serif;
  color: var(--mark);
  font-size: 22px;
  font-weight: 700;
}
.steps p { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }

.bound-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.bound {
  padding: 18px;
  background: #1a2230;
  border: 1px solid #334155;
}
.bound h3 { margin: 0 0 8px; font-size: 18px; color: #fff; }
.bound p { margin: 0; font-size: 14px; }

.sources {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.sources a {
  display: block;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 800;
}
.sources a:hover { border-color: var(--ink); }
.sources small { display: block; margin-top: 6px; color: var(--muted); font-weight: 600; }

.faq { display: grid; gap: 8px; }
.faq details {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 4px 16px 4px;
}
.faq summary {
  cursor: pointer;
  font-weight: 800;
  padding: 12px 0;
}
.faq details p { margin: 0 0 14px; color: var(--ink-soft); }

.compare-form {
  background: var(--white);
  border: 1px solid var(--ink);
}
.compare-form .form-intro {
  padding: 22px 22px 8px;
}
.compare-form .form-intro h2 { margin: 8px 0 8px; }
.compare-table { border-left: 0; border-right: 0; }
.compare-table .col-selected { background: var(--mark-soft); }
.compare-table .choice { text-align: center; }
.compare-table label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-weight: 800;
}
.compare-table input { width: 18px; height: 18px; accent-color: var(--mark); }
.yes { color: var(--ok); font-weight: 700; }
.no { color: var(--warn); }

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 16px;
  padding: 20px 22px 8px;
}
.fields .full { grid-column: 1 / -1; }
.fields label span, .checks span { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 800; }
.fields input, .fields textarea {
  width: 100%;
  padding: 12px 12px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}
.checks { padding: 8px 22px 0; display: grid; gap: 10px; }
.checks label { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }
.checks input { margin-top: 4px; accent-color: var(--mark); }
.form-actions { padding: 16px 22px 22px; }
.form-error { min-height: 1.4em; color: var(--mark); font-size: 14px; font-weight: 700; }
.form-actions small { display: block; margin-top: 10px; color: var(--muted); }

.footer {
  padding: 40px 0 96px;
  background: var(--ink);
  color: #d1d5db;
  font-size: 13px;
}
.footer a, .footer button { color: #f4f1ea; }
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid #334155;
}
.footer nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.footer nav button {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}
.footer-meta { padding: 18px 0; display: grid; gap: 6px; }
.footer-meta p { margin: 0; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid #334155;
}

.mobile-cta {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 70;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(247, 245, 241, 0.96);
  border-top: 1px solid var(--line);
}
.mobile-cta .btn { width: 100%; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(17, 24, 39, 0.55);
}
.modal.is-open { display: grid; }
.modal-dialog {
  width: min(100%, 480px);
  max-height: min(86vh, 720px);
  overflow: auto;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--ink);
  position: relative;
}
.modal-close {
  position: absolute;
  top: 10px; right: 12px;
  width: 40px; height: 40px;
  background: none;
  border: 0;
  font-size: 24px;
  cursor: pointer;
}
.modal-copy h3 { font-size: 16px; margin: 16px 0 6px; }
.modal-copy p { color: var(--ink-soft); }
.success-modal .modal-dialog { text-align: center; }
.success-dot {
  width: 18px; height: 18px;
  margin: 8px auto 16px;
  background: var(--mark);
  border-radius: 50%;
}

.age-gate {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(17, 24, 39, 0.72);
}
.age-gate.is-open { display: grid; }
.age-card {
  width: min(100%, 420px);
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--ink);
  text-align: center;
}
.age-card h2 { margin: 0 0 10px; }
.age-card p { color: var(--ink-soft); }
.age-actions { display: flex; gap: 8px; justify-content: center; margin-top: 16px; }

.consent-banner {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  z-index: 120;
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--ink);
}
.consent-banner-inner {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.consent-banner p { margin: 4px 0 0; color: var(--ink-soft); font-size: 13px; }
.consent-banner-actions { display: flex; flex-wrap: wrap; gap: 8px; }

@media (max-width: 960px) {
  .hero-grid, .sample, .hour-grid, .split { grid-template-columns: 1fr; }
  .course-grid, .bound-grid, .sources { grid-template-columns: 1fr; }
  .site-nav {
    display: none;
    position: absolute;
    top: calc(var(--header) + 32px);
    left: 0; right: 0;
    padding: 12px 20px 20px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
  }
  .site-nav.is-open { display: flex; }
  .menu-toggle { display: block; }
  .fields { grid-template-columns: 1fr; }
  .mobile-cta { display: block; }
  .consent-banner-inner { flex-direction: column; align-items: stretch; }
}

@media (max-width: 720px) {
  .compare-table { font-size: 13px; }
  .compare-table th:first-child,
  .compare-table td:first-child { position: sticky; left: 0; background: var(--white); }
  .footer-top, .footer-bottom { flex-direction: column; }
}