:root {
  --bg: #f7f8f5;
  --bg-elevated: #ffffff;
  --ink: #1c221e;
  --ink-soft: #5a635c;
  --line: #dde2d8;
  --accent: #3d5c47;
  --accent-hover: #2f4837;
  --accent-soft: #e8efe9;
  --sage: #8fa896;
  --warn: #8a3b2c;
  --ok: #2f5d3a;
  --radius: 4px;
  --shadow: 0 12px 40px rgba(28, 34, 30, 0.06);
  --font-display: "Nanum Myeongjo", "Noto Serif KR", Georgia, serif;
  --font-body: "Noto 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);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(143, 168, 150, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(61, 92, 71, 0.08), transparent 50%),
    linear-gradient(180deg, #fafbf8 0%, var(--bg) 40%, #f3f5f0 100%);
  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: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--ink);
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin: 0 0 0.65rem;
}

h3 {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 245, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  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 span {
  color: var(--accent);
}

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

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  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: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);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Hero variants */
.hero-home {
  padding: 3.5rem 0 4rem;
  overflow: hidden;
}

.hero-home__grid {
  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(3.2rem, 8vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 1.25rem;
  color: var(--ink);
}

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

.hero-lede {
  font-size: 1.08rem;
  max-width: 34ch;
  margin-bottom: 1.75rem;
}

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

.hero-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 2px;
  animation: rise-in 0.9s ease both;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto -12% -8% 35%;
  height: 55%;
  background: var(--accent-soft);
  z-index: -1;
  animation: drift 1.2s ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes drift {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.reveal {
  animation: fade-up 0.7s ease both;
}

.reveal-delay {
  animation-delay: 0.15s;
}

/* Sections */
.section {
  padding: 4rem 0;
}

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

.section--muted {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid var(--line);
}

.section-label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.section-head {
  max-width: 42rem;
  margin-bottom: 2rem;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 2rem 0;
}

.proof-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  color: var(--ink);
  font-weight: 700;
}

.proof-item span {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-list li {
  padding-top: 1rem;
  border-top: 2px solid var(--accent);
}

.feature-list h3 {
  margin-top: 0.75rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.75rem;
}

.course-tile {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.course-tile:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.course-tile img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.course-tile__body {
  padding: 1.25rem 1.35rem 1.5rem;
}

.course-tile__body h3 {
  color: var(--ink);
  text-decoration: none;
}

.course-tile__meta {
  font-size: 0.85rem;
  color: var(--sage);
  margin-bottom: 0.5rem;
}

.featured-deep {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.featured-deep img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.quote-stack {
  display: grid;
  gap: 1.5rem;
}

.quote {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 1.35rem 1.5rem;
}

.quote p {
  color: var(--ink);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}

.quote footer {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.page-hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.page-hero--media {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background-size: cover;
  background-position: center;
}

.page-hero--media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 34, 30, 0.25), rgba(28, 34, 30, 0.72));
}

.page-hero--media .container {
  position: relative;
  z-index: 1;
  padding-bottom: 2.5rem;
}

.page-hero--media h1,
.page-hero--media p {
  color: #f4f6f3;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin-top: 2.25rem;
}

.prose ul,
.prose ol {
  color: var(--ink-soft);
  padding-left: 1.25rem;
}

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

.module-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.module-list li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.module-list .num {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--sage);
}

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

.price-tier {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.price-tier--focus {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.price-tier .amount {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  margin: 0.75rem 0;
}

.price-tier .amount small {
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-family: var(--font-body);
}

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

.price-tier li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.note {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 1.5rem;
}

.review-grid {
  display: grid;
  gap: 1.5rem;
}

.review-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

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

.case-study {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 2rem;
  margin: 2rem 0;
}

.blog-list {
  display: grid;
  gap: 2rem;
}

.blog-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
  text-decoration: none;
  color: inherit;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.blog-item img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

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

.blog-meta {
  font-size: 0.85rem;
  color: var(--sage);
  margin-bottom: 0.35rem;
}

.article-cover {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  margin: 1.5rem 0 2rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 3rem;
}

.form-field {
  margin-bottom: 1.15rem;
}

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

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: var(--bg-elevated);
  color: var(--ink);
}

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

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

.field-error {
  display: block;
  min-height: 1.2em;
  font-size: 0.82rem;
  color: var(--warn);
  margin-top: 0.25rem;
}

.form-status {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
}

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

.form-status--err {
  background: #f7ebe8;
  color: var(--warn);
}

.contact-aside {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
}

.contact-aside dl {
  margin: 0;
}

.contact-aside dt {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sage);
  margin-top: 1rem;
}

.contact-aside dd {
  margin: 0.25rem 0 0;
  color: var(--ink);
}

.faq-list {
  display: grid;
  gap: 0.5rem;
}

.faq-item {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
}

.faq-item__q {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 1rem 1.15rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--ink);
}

.faq-item__a {
  display: none;
  padding: 0 1.15rem 1.15rem;
  color: var(--ink-soft);
  margin: 0;
}

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

.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.25rem 0;
}

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

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

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

.avatar-row {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  margin: 1.5rem 0;
}

.avatar-row img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 50%;
}

.cta-band {
  padding: 3.5rem 0;
  text-align: center;
  background: var(--accent);
  color: #fff;
}

.cta-band h2 {
  color: #fff;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 36rem;
  margin: 0 auto 1.5rem;
}

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

.cta-band .btn--ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 3rem 0 2rem;
  background: #eef1eb;
  margin-top: 3rem;
}

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

.site-footer h3 {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

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

.site-footer li {
  margin-bottom: 0.4rem;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.footer-meta {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.footer-bottom {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--bg-elevated);
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 30px rgba(28, 34, 30, 0.08);
  padding: 1.15rem 0;
  animation: fade-up 0.4s ease both;
}

.cookie-banner__inner {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cookie-banner__text {
  margin: 0;
  font-size: 0.92rem;
  max-width: 52rem;
}

.cookie-banner__actions {
  display: flex;
  gap: 0.6rem;
  flex-shrink: 0;
}

.inline-error {
  background: #f7ebe8;
  color: var(--warn);
  padding: 0.75rem 1rem;
  margin: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.error-page {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 1;
  color: var(--sage);
  margin-bottom: 0.5rem;
}

.instructor-block {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.5rem;
  align-items: start;
  margin: 2rem 0;
}

.instructor-block img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 2px;
}

.split-studio {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 70vh;
}

.split-studio__visual {
  background-size: cover;
  background-position: center;
  min-height: 320px;
}

.split-studio__content {
  padding: 3.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg-elevated);
}

@media (max-width: 900px) {
  .hero-home__grid,
  .featured-deep,
  .pricing-grid,
  .contact-layout,
  .two-col,
  .split-studio,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .feature-list {
    grid-template-columns: 1fr;
  }

  .blog-item {
    grid-template-columns: 1fr;
  }

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

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

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

  .cookie-banner__inner {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-visual {
    min-height: 260px;
  }

  .hero-visual img {
    height: 260px;
  }
}

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

  .instructor-block {
    grid-template-columns: 1fr;
  }
}