/* Neuralnetservices — ink forest + parchment usability theme */
:root {
  --color-ink: #14241f;
  --color-forest: #1a3d36;
  --color-forest-deep: #0f2924;
  --color-moss: #3d6b5e;
  --color-brass: #b08a4f;
  --color-brass-soft: #e8d5a8;
  --color-paper: #f3efe6;
  --color-paper-warm: #ebe4d6;
  --color-mist: #d8e0dc;
  --color-cream: #faf7f0;
  --color-muted: #5a6b64;
  --color-line: rgba(26, 61, 54, 0.14);
  --color-error: #8b3a2f;
  --color-success: #1f5c45;
  --font-display: "Nanum Myeongjo", "Noto Serif KR", serif;
  --font-body: "Noto Sans KR", sans-serif;
  --space-xs: 0.4rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --wrap: 70rem;
  --radius: 2px;
  --header-h: 4rem;
  --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: 1.05rem;
  line-height: 1.7;
  color: var(--color-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(176, 138, 79, 0.12), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(61, 107, 94, 0.1), transparent 45%),
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-paper) 40%, var(--color-paper-warm) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

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

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

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

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  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-cream);
  border-color: var(--color-forest);
}

.btn--primary:hover {
  background: var(--color-forest-deep);
  color: var(--color-brass-soft);
}

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

.btn--ghost:hover {
  background: rgba(26, 61, 54, 0.06);
}

.btn--on-dark {
  background: var(--color-brass-soft);
  color: var(--color-forest-deep);
  border-color: var(--color-brass-soft);
}

.btn--on-dark:hover {
  background: #fff;
  color: var(--color-ink);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: var(--space-lg);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

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

.site-header__brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-forest);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--color-line);
  background: transparent;
  cursor: pointer;
}

.site-header__toggle-bar {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin-inline: auto;
  background: var(--color-forest);
}

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

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
}

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

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

.site-nav__cta:hover {
  background: var(--color-forest-deep);
  color: var(--color-brass-soft) !important;
}

@media (max-width: 880px) {
  .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);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease);
  }

  .site-nav.is-open {
    max-height: 24rem;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.5rem;
    gap: 0;
  }

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

  .site-nav__cta {
    margin-top: 0.75rem;
    text-align: center;
    border-bottom: none !important;
  }
}

/* Home hero — full bleed */
.home-hero {
  position: relative;
  min-height: min(92vh, 46rem);
  display: flex;
  align-items: flex-end;
  color: var(--color-cream);
  overflow: hidden;
}

.home-hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(15, 41, 36, 0.88) 0%, rgba(15, 41, 36, 0.55) 48%, rgba(15, 41, 36, 0.35) 100%),
    url("https://images.unsplash.com/photo-1497366811353-6870744d04b2?w=1600&h=1000&fit=crop") center / cover no-repeat;
  transform: scale(1.04);
  animation: hero-settle 1.4s var(--ease) forwards;
}

@keyframes hero-settle {
  to { transform: scale(1); }
}

.home-hero__inner {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) 0 var(--space-xl);
  max-width: 38rem;
}

.home-hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
  opacity: 0;
  animation: rise 0.8s var(--ease) 0.15s forwards;
}

.home-hero__headline {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 var(--space-sm);
  color: var(--color-brass-soft);
  opacity: 0;
  animation: rise 0.8s var(--ease) 0.3s forwards;
}

.home-hero__support {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.65;
  color: rgba(250, 247, 240, 0.88);
  max-width: 32rem;
  opacity: 0;
  animation: rise 0.8s var(--ease) 0.45s forwards;
}

.home-hero .btn-row {
  opacity: 0;
  animation: rise 0.8s var(--ease) 0.6s forwards;
}

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

/* Sections */
.section {
  padding: var(--space-2xl) 0;
}

.section--tint {
  background: rgba(216, 224, 220, 0.35);
  border-block: 1px solid var(--color-line);
}

.section__eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-moss);
  margin: 0 0 var(--space-xs);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 var(--space-sm);
  color: var(--color-forest-deep);
}

.section__lead {
  margin: 0 0 var(--space-lg);
  color: var(--color-muted);
  max-width: 36rem;
}

.split {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 800px) {
  .split {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .split--reverse {
    grid-template-columns: 0.95fr 1.05fr;
  }

  .split--reverse .split__media {
    order: -1;
  }
}

.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  filter: saturate(0.92);
}

.offer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.offer-list__item {
  display: grid;
  gap: 0.35rem 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.25s var(--ease);
}

@media (min-width: 640px) {
  .offer-list__item {
    grid-template-columns: 1fr auto;
    align-items: baseline;
  }
}

.offer-list__item:hover {
  padding-left: 0.5rem;
}

.offer-list__item:first-child {
  border-top: 1px solid var(--color-line);
}

.offer-list__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-forest);
}

.offer-list__short {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.98rem;
}

.offer-list__meta {
  font-size: 0.85rem;
  color: var(--color-brass);
  font-weight: 600;
  white-space: nowrap;
}

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

@media (min-width: 760px) {
  .quote-rail {
    grid-template-columns: 1fr 1fr;
  }
}

.quote {
  margin: 0;
  padding: var(--space-lg) 0 0;
  border-top: 2px solid var(--color-forest);
}

.quote p {
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.6;
  margin: 0 0 var(--space-md);
}

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

.quote cite {
  font-style: normal;
  font-weight: 600;
  color: var(--color-ink);
}

/* Service grid (interaction containers — list links) */
.service-grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 700px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-tile {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: var(--space-md);
  transition: opacity 0.2s;
}

.service-tile:hover {
  opacity: 0.88;
}

.service-tile__img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  margin-bottom: var(--space-md);
  border-radius: var(--radius);
}

.service-tile__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 0.4rem;
  color: var(--color-forest);
}

.service-tile__short {
  margin: 0;
  color: var(--color-muted);
  flex: 1;
}

.service-tile__link {
  margin-top: var(--space-sm);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-brass);
}

/* Page heroes */
.page-hero {
  position: relative;
  padding: var(--space-xl) 0;
}

.page-hero--image {
  min-height: 18rem;
  display: flex;
  align-items: flex-end;
  color: var(--color-cream);
  padding: 0;
}

.page-hero__media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15, 41, 36, 0.35), rgba(15, 41, 36, 0.82)),
    var(--hero-img) center / cover no-repeat;
}

.page-hero__veil {
  position: absolute;
  inset: 0;
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) 0 var(--space-xl);
}

.page-hero__brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brass-soft);
  margin: 0 0 0.5rem;
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 0.5rem;
}

.page-hero--plain .page-hero__title {
  color: var(--color-forest-deep);
}

.page-hero__lead {
  margin: 0;
  max-width: 36rem;
  opacity: 0.92;
}

.page-hero--plain .page-hero__lead {
  color: var(--color-muted);
}

.page__body {
  padding: var(--space-xl) 0 var(--space-2xl);
}

/* Prose */
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  color: var(--color-forest-deep);
  margin: var(--space-xl) 0 var(--space-sm);
}

.prose h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: var(--space-lg) 0 var(--space-xs);
}

.prose p,
.prose li {
  color: var(--color-ink);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: var(--space-md) 0;
}

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

.prose th {
  background: rgba(26, 61, 54, 0.06);
  font-weight: 600;
}

/* Detail / process */
.detail-meta {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  padding: var(--space-lg) 0;
  border-block: 1px solid var(--color-line);
}

@media (min-width: 600px) {
  .detail-meta {
    grid-template-columns: repeat(3, 1fr);
  }
}

.detail-meta dt {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-moss);
  margin: 0 0 0.25rem;
}

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

.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  position: relative;
  padding: var(--space-md) 0 var(--space-md) 3rem;
  border-bottom: 1px solid var(--color-line);
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: var(--space-md);
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--color-brass);
}

/* Pricing */
.rate-block {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
}

.rate-block:first-of-type {
  border-top: 1px solid var(--color-line);
}

.rate-block__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 0.35rem;
  color: var(--color-forest);
}

.rate-block__price {
  font-weight: 700;
  color: var(--color-brass);
  margin: 0 0 0.5rem;
}

.rate-note {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: rgba(26, 61, 54, 0.05);
  border-left: 3px solid var(--color-forest);
}

/* Reviews */
.review-list {
  display: grid;
  gap: var(--space-lg);
}

.review-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
}

.review-item__service {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-moss);
  margin: 0 0 0.5rem;
}

.review-item__text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  line-height: 1.65;
  margin: 0 0 var(--space-sm);
}

.review-item__who {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.story {
  margin-top: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-forest-deep);
  color: var(--color-cream);
}

.story h2 {
  font-family: var(--font-display);
  color: var(--color-brass-soft);
  margin-top: 0;
}

.story p {
  color: rgba(250, 247, 240, 0.9);
}

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

.post-teaser {
  display: grid;
  gap: var(--space-md);
  text-decoration: none;
  color: inherit;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 700px) {
  .post-teaser {
    grid-template-columns: 16rem 1fr;
    align-items: start;
  }
}

.post-teaser img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
}

.post-teaser__date {
  font-size: 0.85rem;
  color: var(--color-moss);
  margin: 0 0 0.35rem;
}

.post-teaser__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 0.4rem;
  color: var(--color-forest);
}

.post-body p {
  margin: 0 0 1.1rem;
}

.post-cover {
  width: 100%;
  max-height: 28rem;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: var(--space-lg);
}

/* Contact form */
.contact-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 800px) {
  .contact-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.form-field {
  margin-bottom: var(--space-md);
}

.form-field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

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

.form-field textarea {
  min-height: 9rem;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--color-moss);
  outline-offset: 1px;
}

.form-field__error {
  display: none;
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: var(--color-error);
}

.form-field.is-invalid .form-field__error {
  display: block;
}

.form-field.is-invalid input,
.form-field.is-invalid select,
.form-field.is-invalid textarea {
  border-color: var(--color-error);
}

.form-status {
  display: none;
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius);
}

.form-status.is-visible {
  display: block;
}

.form-status--success {
  background: rgba(31, 92, 69, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(31, 92, 69, 0.25);
}

.form-status--error {
  background: rgba(139, 58, 47, 0.08);
  color: var(--color-error);
  border: 1px solid rgba(139, 58, 47, 0.25);
}

.contact-aside {
  padding: var(--space-lg);
  background: rgba(26, 61, 54, 0.05);
  border-top: 3px solid var(--color-forest);
}

.contact-aside h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 var(--space-md);
}

.contact-aside p {
  margin: 0 0 0.5rem;
}

/* Process page timeline */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline__item {
  display: grid;
  gap: 0.5rem;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 640px) {
  .timeline__item {
    grid-template-columns: 7rem 1fr;
    gap: var(--space-lg);
  }
}

.timeline__phase {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--color-brass);
  margin: 0;
}

.timeline__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.35rem;
  color: var(--color-forest);
}

/* Footer */
.site-footer {
  background: var(--color-forest-deep);
  color: rgba(250, 247, 240, 0.85);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

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

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer__inner {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 720px) {
  .site-footer__inner {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-cream);
  margin: 0 0 0.35rem;
}

.site-footer__tag {
  margin: 0;
  font-size: 0.95rem;
}

.site-footer__nav {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.site-footer__base {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(232, 213, 168, 0.2);
  font-size: 0.85rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-cream);
  border-top: 1px solid var(--color-line);
  box-shadow: 0 -8px 24px rgba(20, 36, 31, 0.08);
  padding: var(--space-md) 0;
}

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

.cookie-banner__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.cookie-banner__title {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.cookie-banner__text p:last-child {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-muted);
}

.cookie-banner__actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: var(--space-2xl) 0;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-forest-deep);
  margin: 0 0 var(--space-sm);
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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