:root {
  --bg: #f7f8f6;
  --surface: #ffffff;
  --ink: #1c1f1d;
  --muted: #5f6762;
  --accent: #3d5a4c;
  --accent-hover: #2f473c;
  --accent-soft: #e6eee9;
  --border: #dde2de;
  --warn: #8b3a3a;
  --ok: #2f5d45;
  --shadow: 0 12px 40px rgba(28, 31, 29, 0.06);
  --radius: 4px;
  --font-display: "Hahmlet", "Noto Serif KR", serif;
  --font-body: "IBM Plex Sans KR", sans-serif;
  --header-h: 72px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(61, 90, 76, 0.07), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(28, 31, 29, 0.04), transparent 50%),
    var(--bg);
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.inline-error {
  background: #f8eaea;
  color: var(--warn);
  padding: 0.75rem 1rem;
  margin: 0;
  border-bottom: 1px solid #e8c9c9;
  font-size: 0.95rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 246, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.logo:hover {
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 1.35rem;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
}

/* Layout */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding: 3rem 0;
}

.section-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 38rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:active {
  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(--border);
  color: var(--ink);
}

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Hero home — editorial brand-first */
.hero-home {
  padding: 3.5rem 0 0;
  overflow: hidden;
}

.hero-home-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  min-height: calc(100vh - var(--header-h) - 3.5rem);
  max-height: 820px;
}

.hero-copy {
  padding: 2rem 0 3rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  max-width: 34rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin: 0 0 1.25rem;
  animation: rise 0.9s ease both;
}

.hero-line {
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-family: var(--font-display);
  color: var(--accent);
  margin: 0 0 0.75rem;
  animation: rise 0.9s ease 0.12s both;
}

.hero-support {
  color: var(--muted);
  margin: 0;
  animation: rise 0.9s ease 0.22s both;
}

.hero-visual {
  position: relative;
  min-height: 280px;
  margin: 0 -1.25rem;
  animation: fadeIn 1.1s ease 0.2s both;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  max-height: 520px;
  object-fit: cover;
}

@media (min-width: 900px) {
  .hero-home-grid {
    grid-template-columns: 0.95fr 1.05fr;
    align-items: stretch;
    gap: 2.5rem;
  }

  .hero-visual {
    margin: 0;
    min-height: 100%;
  }

  .hero-visual img {
    min-height: 100%;
    max-height: none;
    height: 100%;
  }

  .hero-copy {
    padding: 4rem 0 5rem;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Quotes strip first after hero */
.quote-strip {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
}

.quote-strip blockquote {
  margin: 0;
  max-width: 40rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.5;
  color: var(--ink);
}

.quote-strip cite {
  display: block;
  margin-top: 1rem;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--muted);
  font-family: var(--font-body);
}

/* Course previews — no cards by default; use list with divider */
.course-list {
  display: grid;
  gap: 0;
  margin-top: 2rem;
}

.course-row {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.75rem 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease;
}

.course-row:last-child {
  border-bottom: 1px solid var(--border);
}

.course-row:hover {
  background: rgba(61, 90, 76, 0.04);
}

.course-row img {
  width: 140px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius);
}

.course-row h3 {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
  color: var(--ink);
}

.course-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.course-row .meta {
  font-size: 0.85rem;
  color: var(--accent);
  white-space: nowrap;
}

@media (max-width: 700px) {
  .course-row {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .course-row img {
    width: 100%;
    height: 180px;
  }

  .course-row .meta {
    white-space: normal;
  }
}

/* Benefits */
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.benefit-grid h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.benefit-grid p {
  color: var(--muted);
  margin: 0;
  font-size: 0.98rem;
}

@media (max-width: 800px) {
  .benefit-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

/* Stats — human numbers */
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem 4rem;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.stat-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1.1;
}

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

/* Page hero (inner pages) */
.page-hero {
  padding: 3.5rem 0 2rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  max-width: 18ch;
}

.page-hero .lede {
  margin-top: 0.5rem;
}

.page-hero-media {
  margin: 2rem -1.25rem 0;
}

.page-hero-media img {
  width: 100%;
  height: clamp(220px, 40vw, 420px);
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-hero-media {
    margin: 2.5rem 0 0;
  }
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}

@media (min-width: 960px) {
  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 700px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

.price-tier {
  padding: 1.75rem 0;
  border-top: 2px solid var(--accent);
}

.price-tier h3 {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.price-tier .price {
  font-family: var(--font-display);
  font-size: 1.85rem;
  margin: 0.75rem 0;
}

.price-tier ul {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.95rem;
}

.price-tier li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.price-tier.featured {
  background: var(--accent-soft);
  padding: 1.75rem 1.25rem;
  margin: 0 -0.25rem;
}

.price-note {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Reviews */
.review-list {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.review-item {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.review-item .stars {
  color: var(--accent);
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.review-item blockquote {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.review-item.long blockquote {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.55;
}

.review-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.case-study {
  margin-top: 3rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.case-study h3 {
  font-size: 1.5rem;
}

/* Blog */
.blog-grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

.blog-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.5rem;
  text-decoration: none;
  color: inherit;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.blog-item img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius);
}

.blog-item h2 {
  font-size: 1.35rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.blog-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.blog-item .date {
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

@media (max-width: 640px) {
  .blog-item {
    grid-template-columns: 1fr;
  }

  .blog-item img {
    height: 200px;
  }
}

.article {
  max-width: 680px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

.article .cover {
  width: 100%;
  height: clamp(200px, 35vw, 360px);
  object-fit: cover;
  margin: 1.5rem 0 2rem;
  border-radius: var(--radius);
}

.article .meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.article h2 {
  margin-top: 2rem;
  font-size: 1.4rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  margin-top: 2rem;
}

@media (max-width: 800px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info p {
  color: var(--muted);
}

.field {
  margin-bottom: 1.15rem;
}

.field label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--surface);
  color: var(--ink);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

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

.field-error {
  display: block;
  min-height: 1.2em;
  color: var(--warn);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.form-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
}

.form-status.is-success {
  background: var(--accent-soft);
  color: var(--ok);
}

.form-status.is-error {
  background: #f8eaea;
  color: var(--warn);
}

/* FAQ */
.faq-list {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item button {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.15rem 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.faq-item button::after {
  content: "+";
  color: var(--accent);
  font-size: 1.2rem;
}

.faq-item.is-open button::after {
  content: "–";
}

.faq-item .faq-body {
  display: none;
  padding: 0 0 1.15rem;
  color: var(--muted);
}

.faq-item.is-open .faq-body {
  display: block;
}

/* Modules */
.module-list {
  counter-reset: mod;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.module-list li {
  counter-increment: mod;
  padding: 1.25rem 0 1.25rem 3.5rem;
  border-top: 1px solid var(--border);
  position: relative;
}

.module-list li::before {
  content: counter(mod, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1.25rem;
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.1rem;
}

.module-list h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.module-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.instructor {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

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

/* Legal */
.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

.legal h1 {
  font-size: 2.2rem;
}

.legal h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0 1.5rem;
}

.legal th,
.legal td {
  border: 1px solid var(--border);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.legal th {
  background: var(--accent-soft);
  font-weight: 600;
}

/* 404 */
.error-page {
  min-height: calc(100vh - var(--header-h) - 200px);
  display: flex;
  align-items: center;
  padding: 4rem 0;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin-bottom: 0.25rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow);
  animation: rise 0.45s ease both;
}

.cookie-banner-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.15rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cookie-banner-inner p {
  margin: 0;
  flex: 1 1 280px;
  font-size: 0.92rem;
  color: var(--muted);
}

.cookie-banner-actions {
  display: flex;
  gap: 0.6rem;
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: #c8cdc9;
  margin-top: 4rem;
  padding: 3.5rem 0 0;
}

.site-footer a {
  color: #dfe3e0;
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
}

.site-footer .logo {
  color: #fff;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 2rem;
}

.footer-brand p,
.footer-contact p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h3,
.footer-contact h3,
.footer-brand h3 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9aa39c;
  margin: 0 0 1rem;
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-bottom {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* Mobile nav */
@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1.25rem;
    gap: 0;
    display: none;
  }

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

  .site-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }
}

/* Split content helpers */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 760px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.soft-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.75rem;
}

.prose-wide {
  max-width: 40rem;
}

.mt-2 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }