/* Neural Analytics Business — forest slate theme */
:root {
  --color-bg: #eef2ef;
  --color-bg-alt: #e2e8e3;
  --color-surface: #f7f9f7;
  --color-ink: #1a2b26;
  --color-ink-soft: #3d524a;
  --color-muted: #5e7269;
  --color-primary: #1f3d36;
  --color-primary-hover: #2a5248;
  --color-accent: #c4a35a;
  --color-accent-soft: #e8d9b0;
  --color-line: #c5d0c8;
  --color-error: #8b3a3a;
  --color-success: #2d5a45;
  --font-display: "Gowun Batang", Georgia, serif;
  --font-body: "Noto Sans KR", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow: 0 12px 40px rgba(26, 43, 38, 0.08);
  --max: 68rem;
  --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: 1.05rem;
  line-height: 1.7;
  color: var(--color-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(196, 163, 90, 0.18), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(31, 61, 54, 0.12), transparent 45%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

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

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

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

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

h1 { font-size: clamp(2rem, 4vw, 3.1rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); }
h3 { font-size: 1.25rem; }

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

ul, ol { margin: 0 0 var(--space-md); padding-left: 1.25rem; }

.main {
  padding-top: var(--header-h);
  min-height: 60vh;
}

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

.wrap--narrow {
  width: min(100% - 2rem, 42rem);
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(247, 249, 247, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 4px 20px rgba(26, 43, 38, 0.06);
}

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

.site-header__brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.site-header__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.25s var(--ease);
}

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

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

.site-header__list a:hover {
  color: var(--color-primary);
}

.site-header__cta {
  background: var(--color-primary);
  color: #f7f9f7 !important;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
}

.site-header__cta:hover {
  background: var(--color-primary-hover);
}

@media (max-width: 900px) {
  .site-header__toggle { display: flex; }
  .site-header__nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-md);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s var(--ease), opacity 0.35s var(--ease), visibility 0.35s;
  }
  .site-header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .site-header__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}

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

.btn--primary {
  background: var(--color-primary);
  color: #f7f9f7;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  color: #f7f9f7;
}

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

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

.btn--accent {
  background: var(--color-accent);
  color: var(--color-ink);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Hero — full-bleed */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #f4f7f5;
}

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

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroZoom 18s var(--ease) forwards;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15, 28, 24, 0.35) 0%, rgba(15, 28, 24, 0.78) 70%, rgba(15, 28, 24, 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-2xl) 0 var(--space-xl);
  animation: riseIn 0.9s var(--ease) both;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.03em;
  color: #f4f7f5;
}

.hero__lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  max-width: 32rem;
  color: rgba(244, 247, 245, 0.88);
  margin-bottom: var(--space-lg);
}

@keyframes heroZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

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

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(0.75rem); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  animation: fadeUp 0.7s var(--ease) both;
}

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

.section--alt {
  background: rgba(247, 249, 247, 0.65);
}

.section__label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.section__intro {
  max-width: 36rem;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-lg);
}

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

.page-hero__media {
  margin-top: var(--space-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 22rem;
}

.page-hero__media img {
  width: 100%;
  height: 22rem;
  object-fit: cover;
}

/* Offer preview */
.offer-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.offer-item {
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-line);
}

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

.offer-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

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

.offer-item h3 {
  margin-bottom: var(--space-xs);
}

.offer-item h3 a {
  text-decoration: none;
  color: inherit;
}

.offer-item p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
}

/* Quote / evidence */
.quote-block {
  max-width: 40rem;
  padding: var(--space-lg) 0;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-lg);
}

.quote-block__text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

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

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

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

.rate-table th {
  font-weight: 600;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.rate-note {
  background: var(--color-surface);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  margin: var(--space-lg) 0;
}

/* 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;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.review-item blockquote {
  margin: 0 0 var(--space-sm);
  font-size: 1.05rem;
}

.review-item cite {
  font-style: normal;
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

.story {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
}

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

.post-teaser {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .post-teaser {
    grid-template-columns: 14rem 1fr;
    align-items: start;
  }
}

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

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

.post-teaser__meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

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

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

.prose {
  max-width: 42rem;
}

.prose h2 { margin-top: var(--space-xl); }

/* Forms */
.form {
  max-width: 36rem;
}

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

.form__label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
}

.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-surface);
  color: var(--color-ink);
  transition: border-color 0.2s;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__textarea {
  min-height: 9rem;
  resize: vertical;
}

.form__error {
  display: none;
  color: var(--color-error);
  font-size: 0.85rem;
  margin-top: 0.3rem;
}

.form__group.is-invalid .form__error {
  display: block;
}

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

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

.form__status.is-success {
  display: block;
  background: rgba(45, 90, 69, 0.12);
  color: var(--color-success);
}

.form__status.is-error {
  display: block;
  background: rgba(139, 58, 58, 0.12);
  color: var(--color-error);
}

.contact-aside {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
}

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

/* Process steps */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}

.steps li {
  position: relative;
  padding: 0 0 var(--space-lg) 3.5rem;
  border-left: 1px solid var(--color-line);
  margin-left: 0.9rem;
}

.steps li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -1rem;
  top: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: #f7f9f7;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  inset: auto 0 0;
  z-index: 200;
  padding: var(--space-md);
  animation: riseIn 0.45s var(--ease);
}

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

.cookie-banner__inner {
  width: min(100%, 40rem);
  margin-inline: auto;
  background: var(--color-primary);
  color: #e8efeA;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
}

.cookie-banner__text {
  margin: 0;
  flex: 1 1 14rem;
  font-size: 0.92rem;
  line-height: 1.5;
}

.cookie-banner__text a {
  color: var(--color-accent-soft);
}

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

.cookie-banner .btn--ghost {
  border-color: rgba(232, 239, 234, 0.35);
  color: #e8efeA;
}

.cookie-banner .btn--primary {
  background: var(--color-accent);
  color: var(--color-ink);
}

/* Footer */
.site-footer {
  margin-top: var(--space-2xl);
  padding: var(--space-xl) 0 var(--space-lg);
  background: var(--color-primary);
  color: #d4ddd8;
}

.site-footer a {
  color: #e8efeA;
}

.site-footer__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: #f7f9f7;
  margin-bottom: var(--space-xs);
}

.site-footer__tag {
  margin: 0;
  font-size: 0.9rem;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.site-footer__links a {
  text-decoration: none;
  font-size: 0.92rem;
}

.site-footer__copy {
  width: min(100% - 2rem, var(--max));
  margin: var(--space-lg) auto 0;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(232, 239, 234, 0.15);
  font-size: 0.85rem;
  color: #9aada4;
}

/* 404 */
.page-404 {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.page-404 h1 {
  font-size: 4rem;
  color: var(--color-primary);
}

/* Legal */
.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
}

.table-wrap {
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.cookie-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

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

.cookie-table th {
  background: var(--color-surface);
}

/* Service detail */
.detail-meta {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.detail-meta dt {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 0.2rem;
}

.detail-meta dd {
  margin: 0;
}

.flagship-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-lg) 0;
  max-height: 24rem;
}

.flagship-img img {
  width: 100%;
  height: 24rem;
  object-fit: cover;
}

.people-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  margin-top: var(--space-lg);
}

.person {
  text-align: left;
}

.person__photo {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1;
  margin-bottom: var(--space-md);
}

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

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