/* Developer Ecosystems — forest ink + warm parchment */
:root {
  --color-ink: #14241c;
  --color-forest: #1e3a2f;
  --color-forest-mid: #2d5344;
  --color-moss: #4a7a62;
  --color-parchment: #f3ebe0;
  --color-parchment-deep: #e6d9c8;
  --color-clay: #b57a4a;
  --color-cream: #faf6f0;
  --color-white: #ffffff;
  --color-muted: #5c6b62;
  --color-line: #d4c8b6;
  --color-error: #9b2c2c;
  --color-success: #1e5c3a;
  --font-display: "Gowun Batang", Georgia, serif;
  --font-body: "Noto Sans KR", sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --radius: 2px;
  --shadow-soft: 0 12px 40px rgba(20, 36, 28, 0.08);
  --max: 1120px;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(74, 122, 98, 0.12), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(181, 122, 74, 0.08), transparent 45%),
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-parchment) 100%);
  min-height: 100vh;
}

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

a {
  color: var(--color-forest-mid);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-forest);
  margin: 0 0 var(--space-3);
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.35rem; }

p { margin: 0 0 var(--space-3); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.section {
  padding: var(--space-6) 0;
}

.section--tight {
  padding: var(--space-5) 0;
}

.section__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-clay);
  margin-bottom: var(--space-2);
}

.section__lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 40rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 246, 240, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

.site-header__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: var(--space-3);
}

.site-header__brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-forest);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__brand:hover {
  color: var(--color-moss);
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: var(--space-2);
  cursor: pointer;
}

.site-header__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-forest);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-ink);
  font-size: 0.9375rem;
  font-weight: 500;
}

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

.site-nav__cta {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  background: var(--color-forest);
  color: var(--color-parchment) !important;
  border-radius: var(--radius);
}

.site-nav__cta:hover {
  background: var(--color-forest-mid);
  color: var(--color-cream) !important;
}

@media (max-width: 900px) {
  .site-header__toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-cream);
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-3);
    display: none;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .site-nav__cta {
    text-align: center;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

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

.btn--primary {
  background: var(--color-forest);
  color: var(--color-parchment);
}

.btn--primary:hover {
  background: var(--color-forest-mid);
  color: var(--color-cream);
}

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

.btn--ghost:hover {
  background: var(--color-forest);
  color: var(--color-parchment);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* Hero — full-bleed, brand-first */
.hero {
  position: relative;
  min-height: min(88vh, 720px);
  display: grid;
  align-items: end;
  color: var(--color-cream);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: hero-drift 18s var(--ease) infinite alternate;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(20, 36, 28, 0.35) 0%, rgba(20, 36, 28, 0.78) 70%, rgba(20, 36, 28, 0.92) 100%);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-6);
  animation: rise-in 0.9s var(--ease) both;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--color-parchment);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
}

.hero__headline {
  font-family: var(--font-body);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 500;
  color: var(--color-parchment-deep);
  max-width: 32rem;
  margin: 0 0 var(--space-3);
  line-height: 1.55;
}

.hero__sub {
  color: rgba(243, 235, 224, 0.82);
  max-width: 28rem;
  margin: 0;
  font-size: 1rem;
}

.hero .btn--primary {
  background: var(--color-clay);
  border-color: var(--color-clay);
  color: var(--color-cream);
}

.hero .btn--primary:hover {
  background: #9a6438;
}

.hero .btn--ghost {
  border-color: var(--color-parchment);
  color: var(--color-parchment);
}

.hero .btn--ghost:hover {
  background: var(--color-parchment);
  color: var(--color-forest);
}

@keyframes hero-drift {
  from { transform: scale(1.05) translateY(0); }
  to { transform: scale(1.12) translateY(-2%); }
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(1.25rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Page hero (inner) */
.page-hero {
  padding: var(--space-6) 0 var(--space-5);
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(135deg, rgba(30, 58, 47, 0.06), transparent 55%),
    var(--color-parchment-deep);
}

.page-hero__title {
  margin-bottom: var(--space-2);
}

.page-hero__desc {
  color: var(--color-muted);
  max-width: 40rem;
  margin: 0;
}

/* Offer preview */
.offer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}

.offer-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.offer-item__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
}

.offer-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.offer-item:hover .offer-item__img img {
  transform: scale(1.04);
}

.offer-item__title {
  margin: 0;
  font-size: 1.25rem;
}

.offer-item__title a {
  color: var(--color-forest);
  text-decoration: none;
}

.offer-item__title a:hover {
  color: var(--color-clay);
}

.offer-item__text {
  color: var(--color-muted);
  margin: 0;
  flex: 1;
}

.offer-item__link {
  font-weight: 600;
  text-decoration: none;
  color: var(--color-forest-mid);
}

/* Split block */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

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

.split__img {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.split__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
}

/* Evidence / quotes */
.quote-list {
  display: grid;
  gap: var(--space-4);
}

.quote {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-line);
}

.quote:last-child {
  border-bottom: 1px solid var(--color-line);
}

.quote__text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.quote__meta {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

/* Steps */
.steps {
  counter-reset: step;
  display: grid;
  gap: var(--space-4);
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
  padding: var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.step__num {
  counter-increment: step;
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-clay);
  line-height: 1;
  min-width: 2rem;
}

.step__num::before {
  content: counter(step, decimal-leading-zero);
}

.step h3 {
  margin-bottom: var(--space-2);
}

.step p {
  margin: 0;
  color: var(--color-muted);
}

/* Pricing */
.rate-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
}

.rate-table th,
.rate-table td {
  text-align: left;
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.rate-table th {
  font-family: var(--font-display);
  color: var(--color-forest);
  font-weight: 700;
  background: rgba(30, 58, 47, 0.04);
}

.rate-note {
  background: var(--color-white);
  border-left: 3px solid var(--color-clay);
  padding: var(--space-4);
  margin: var(--space-4) 0;
}

/* Forms */
.form {
  max-width: 36rem;
  display: grid;
  gap: var(--space-3);
}

.form__group {
  display: grid;
  gap: var(--space-1);
}

.form__label {
  font-weight: 600;
  font-size: 0.9375rem;
}

.form__hint {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-ink);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: 2px solid var(--color-moss);
  outline-offset: 1px;
  border-color: var(--color-moss);
}

.form__input.is-invalid,
.form__select.is-invalid,
.form__textarea.is-invalid {
  border-color: var(--color-error);
}

.form__error {
  color: var(--color-error);
  font-size: 0.8125rem;
  min-height: 1.2em;
}

.form__status {
  padding: var(--space-3);
  border-radius: var(--radius);
  display: none;
}

.form__status.is-success {
  display: block;
  background: rgba(30, 92, 58, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form__status.is-error {
  display: block;
  background: rgba(155, 44, 44, 0.08);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-5);
}

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

.contact-aside {
  padding: var(--space-4);
  background: var(--color-forest);
  color: var(--color-parchment);
  border-radius: var(--radius);
  height: fit-content;
}

.contact-aside h2 {
  color: var(--color-parchment);
}

.contact-aside a {
  color: var(--color-parchment-deep);
}

.contact-aside p {
  margin-bottom: var(--space-2);
}

/* Blog */
.post-list {
  display: grid;
  gap: var(--space-5);
}

.post-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-4);
  align-items: start;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

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

.post-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
}

.post-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-card__date {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: var(--space-1);
}

.post-card__title {
  margin-bottom: var(--space-2);
}

.post-card__title a {
  text-decoration: none;
  color: var(--color-forest);
}

.post-body {
  max-width: 42rem;
}

.post-body h2 {
  margin-top: var(--space-5);
}

.post-cover {
  margin: var(--space-4) 0 var(--space-5);
  border-radius: var(--radius);
  overflow: hidden;
  max-height: 420px;
}

.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: 420px;
}

/* Legal */
.legal {
  max-width: 44rem;
}

.legal h2 {
  margin-top: var(--space-5);
  font-size: 1.35rem;
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-3) 0;
  font-size: 0.9rem;
}

.legal th,
.legal td {
  border: 1px solid var(--color-line);
  padding: var(--space-2) var(--space-3);
  text-align: left;
  vertical-align: top;
}

.legal th {
  background: rgba(30, 58, 47, 0.06);
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-forest);
  color: var(--color-parchment);
  padding: var(--space-3) 0;
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.15);
  animation: rise-in 0.4s var(--ease);
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-banner__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.cookie-banner__text {
  margin: 0;
  flex: 1;
  min-width: 220px;
  font-size: 0.9375rem;
}

.cookie-banner__text a {
  color: var(--color-parchment-deep);
}

.cookie-banner__actions {
  display: flex;
  gap: var(--space-2);
}

.cookie-banner .btn--ghost {
  border-color: var(--color-parchment);
  color: var(--color-parchment);
}

.cookie-banner .btn--primary {
  background: var(--color-clay);
  border-color: var(--color-clay);
}

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: var(--color-parchment-deep);
  padding: var(--space-6) 0 var(--space-4);
  margin-top: var(--space-6);
}

.site-footer__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-4);
}

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

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--color-parchment);
  margin-bottom: var(--space-2);
}

.site-footer__tag {
  color: rgba(230, 217, 200, 0.75);
  margin: 0;
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--color-parchment-deep);
  text-decoration: none;
}

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

.site-footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__copy {
  width: min(100% - 2rem, var(--max));
  margin: var(--space-5) auto 0;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(212, 200, 182, 0.2);
  font-size: 0.8125rem;
  color: rgba(230, 217, 200, 0.55);
}

/* 404 */
.error-page {
  text-align: center;
  padding: var(--space-7) var(--space-3);
}

.error-page__code {
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--color-clay);
  margin: 0;
  line-height: 1;
}

/* Flagship detail */
.flagship-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0;
  padding: var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-line);
}

.flagship-meta dt {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-clay);
  margin-bottom: 0.25rem;
}

.flagship-meta dd {
  margin: 0;
  font-weight: 500;
}

.prose ul {
  padding-left: 1.25rem;
  margin-bottom: var(--space-3);
}

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

.cta-band {
  background: var(--color-forest);
  color: var(--color-parchment);
  padding: var(--space-6) 0;
  margin-top: var(--space-5);
}

.cta-band h2 {
  color: var(--color-parchment);
}

.cta-band p {
  color: rgba(243, 235, 224, 0.85);
  max-width: 32rem;
}

.cta-band .btn--primary {
  background: var(--color-clay);
}

.cta-band .btn--ghost {
  border-color: var(--color-parchment);
  color: var(--color-parchment);
}