:root {
  --bg: #fbfcfc;
  --bg-soft: #f1f6f4;
  --surface: #ffffff;
  --ink: #15201c;
  --ink-muted: #5a6b64;
  --accent: #2f6b5d;
  --accent-hover: #245448;
  --accent-soft: #dceee8;
  --line: #d7e3de;
  --danger: #a33b3b;
  --ok: #2a6b4f;
  --shadow: 0 18px 40px rgba(21, 32, 28, 0.06);
  --radius: 12px;
  --font-display: "Noto Serif KR", "Nanum Myeongjo", serif;
  --font-body: "IBM Plex Sans KR", sans-serif;
  --max: 1120px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(47, 107, 93, 0.08), transparent 55%),
    radial-gradient(900px 420px at -5% 20%, rgba(168, 213, 200, 0.22), transparent 50%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 40%, #f4f8f6 100%);
  min-height: 100vh;
  line-height: 1.7;
  font-size: 1rem;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

p {
  margin: 0 0 1em;
  color: var(--ink-muted);
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(251, 252, 252, 0.86);
  border-bottom: 1px solid rgba(215, 227, 222, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.brand span {
  color: var(--accent);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

.hero-editorial {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: end;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 1.2rem;
  color: var(--ink);
}

.hero-brand em {
  font-style: normal;
  color: var(--accent);
  display: block;
}

.hero-lede {
  font-size: 1.15rem;
  max-width: 34rem;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero-visual {
  position: relative;
  min-height: 420px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: 0 0 0 48px;
  box-shadow: var(--shadow);
}

.hero-caption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.92);
  padding: 0.85rem 1rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
  border-left: 3px solid var(--accent);
}

.section {
  padding: 4rem 0;
}

.section-tight {
  padding: 2.5rem 0;
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2rem;
}

.section-kicker {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 1.5rem 0;
  border-block: 1px solid var(--line);
}

.proof-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  color: var(--ink);
  line-height: 1.1;
}

.proof-item span {
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.feature-course {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.feature-course img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.feature-course-body {
  padding: 2rem 2rem 2rem 0.5rem;
}

.benefit-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.benefit {
  padding: 0.5rem 0;
}

.benefit h3 {
  font-size: 1.2rem;
}

.benefit::before {
  content: "";
  display: block;
  width: 2.5rem;
  height: 3px;
  background: var(--accent);
  margin-bottom: 1rem;
  transform: scaleX(0);
  transform-origin: left;
  animation: draw 0.7s ease forwards;
}

@keyframes draw {
  to { transform: scaleX(1); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  animation: rise 0.7s ease both;
}

.reveal-delay-1 { animation-delay: 0.12s; }
.reveal-delay-2 { animation-delay: 0.24s; }
.reveal-delay-3 { animation-delay: 0.36s; }

.grid-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.course-card,
.blog-card,
.price-card,
.review-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover,
.blog-card:hover {
  border-color: #b9d0c7;
  box-shadow: var(--shadow);
}

.course-card img,
.blog-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card-body {
  padding: 1.25rem 1.35rem 1.5rem;
}

.card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

.card-body h3 a {
  color: inherit;
  text-decoration: none;
}

.card-meta {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}

.quote-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.25rem;
}

.quote {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid transparent;
}

.quote p {
  color: var(--ink);
  font-size: 1.05rem;
}

.quote footer {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.cta-band {
  background: linear-gradient(135deg, #1f4e45, #2f6b5d 55%, #3d8574);
  color: #fff;
  border-radius: calc(var(--radius) + 4px);
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cta-band h2,
.cta-band p {
  color: #fff;
  margin: 0;
}

.cta-band p {
  opacity: 0.9;
  margin-top: 0.5rem;
  max-width: 36rem;
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--accent);
}

.cta-band .btn-primary:hover {
  background: var(--accent-soft);
}

.site-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--line);
  background: #f7faf9;
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
}

.footer-grid h4 {
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-grid li {
  margin-bottom: 0.45rem;
}

.footer-grid a {
  color: var(--ink-muted);
  text-decoration: none;
}

.footer-grid a:hover {
  color: var(--accent);
}

.footer-address {
  color: var(--ink-muted);
  font-size: 0.92rem;
  white-space: pre-line;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.page-hero {
  padding: 3.5rem 0 2rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  max-width: 18ch;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.45rem;
}

.prose h3 {
  margin-top: 1.5rem;
  font-size: 1.15rem;
}

.prose ul,
.prose ol {
  color: var(--ink-muted);
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid var(--line);
  padding: 0.75rem 0.9rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 600;
}

.form {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
}

.form-row {
  display: grid;
  gap: 0.35rem;
}

.form label {
  font-weight: 500;
  font-size: 0.95rem;
}

.form input,
.form select,
.form textarea {
  font: inherit;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
}

.form textarea {
  min-height: 140px;
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid rgba(47, 107, 93, 0.25);
  border-color: var(--accent);
}

.field-error {
  color: var(--danger);
  font-size: 0.88rem;
  min-height: 1.2em;
}

.form-status {
  padding: 0.85rem 1rem;
  border-radius: 10px;
  display: none;
}

.form-status.is-success {
  display: block;
  background: #e7f5ee;
  color: var(--ok);
  border: 1px solid #b8dcc8;
}

.form-status.is-error {
  display: block;
  background: #fceeee;
  color: var(--danger);
  border: 1px solid #e8c0c0;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  align-items: stretch;
}

.price-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, #ffffff, var(--accent-soft));
}

.price-card .amount {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  margin: 0.6rem 0 1rem;
}

.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  flex: 1;
}

.price-card li {
  padding: 0.4rem 0;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.modules {
  display: grid;
  gap: 0.85rem;
}

.module {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.15rem;
  background: var(--surface);
}

.module h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.instructor {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.25rem;
  align-items: center;
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.instructor img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--ink);
}

.faq p {
  margin-top: 0.6rem;
}

.case-study {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}

.rating {
  color: var(--accent);
  letter-spacing: 0.08em;
  font-size: 0.9rem;
}

.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 60;
  max-width: 720px;
  margin-inline: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem 1.25rem;
  display: none;
}

.cookie-banner.is-visible {
  display: block;
  animation: rise 0.35s ease;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.inline-error {
  background: #fceeee;
  color: var(--danger);
  border: 1px solid #e8c0c0;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin: 0.75rem 0;
}

.not-found {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1rem;
}

.not-found h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  margin-bottom: 0.2rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.blog-article {
  max-width: 46rem;
  margin-inline: auto;
}

.blog-article .cover {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  margin: 1.5rem 0 2rem;
}

@media (max-width: 900px) {
  .hero-editorial,
  .feature-course,
  .benefit-list,
  .grid-cards,
  .quote-grid,
  .footer-grid,
  .contact-layout,
  .price-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .proof-strip {
    grid-template-columns: 1fr;
  }

  .feature-course-body {
    padding: 1.5rem;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem 1.25rem;
    gap: 0.85rem;
  }

  .nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}