/* Neural Netsec Tech Business — cool slate + deep teal + amber accent */
:root {
  --color-bg: #eef1f4;
  --color-bg-alt: #e2e7ec;
  --color-surface: #f7f9fb;
  --color-ink: #1c2430;
  --color-ink-soft: #4a5563;
  --color-primary: #0e3d35;
  --color-primary-hover: #145a4e;
  --color-accent: #c4782a;
  --color-accent-soft: #f3e6d4;
  --color-line: #c5ced8;
  --color-error: #9b2c2c;
  --color-success: #1a5c45;
  --font-display: "Hahmlet", "Noto Serif KR", serif;
  --font-body: "Noto Sans KR", sans-serif;
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --radius: 2px;
  --shadow-soft: 0 12px 40px rgba(28, 36, 48, 0.08);
  --max: 72rem;
  --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, 120, 42, 0.08), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(14, 61, 53, 0.07), 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;
  transition: color 0.2s var(--ease);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.15rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); }
h3 { font-size: 1.25rem; }

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

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

.main {
  padding-top: var(--header-h);
}

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

.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: 0.95rem;
  font-weight: 600;
  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-primary);
  color: #f7f9fb;
}

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

.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: #fff;
}

.btn--accent:hover {
  background: #a86420;
  color: #fff;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(247, 249, 251, 0.92);
  backdrop-filter: blur(10px);
  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 24px rgba(28, 36, 48, 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 {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--color-ink);
  min-width: 0;
}

.site-header__mark {
  width: 0.65rem;
  height: 1.65rem;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  flex-shrink: 0;
  animation: mark-rise 1.1s var(--ease) both;
}

@keyframes mark-rise {
  from { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
  to { transform: scaleY(1); opacity: 1; }
}

.site-header__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(0.85rem, 2.2vw, 1.05rem);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}

.site-header__toggle-bar {
  display: block;
  width: 1.4rem;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.25s var(--ease);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:first-child {
  transform: translateY(4px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

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

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

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

.site-nav__cta {
  padding: 0.45rem 0.9rem;
  background: var(--color-primary);
  color: #f7f9fb !important;
  border-radius: var(--radius);
}

.site-nav__cta:hover {
  background: var(--color-primary-hover);
  color: #fff !important;
}

@media (max-width: 900px) {
  .site-header__toggle { display: flex; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-md);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }
  .site-nav a {
    display: block;
    padding: 0.65rem 0.5rem;
  }
  .site-nav__cta {
    text-align: center;
  }
}

/* Footer */
.site-footer {
  margin-top: var(--space-2xl);
  padding: var(--space-xl) 0 var(--space-lg);
  background: var(--color-primary);
  color: #d7e5e1;
}

.site-footer a {
  color: #f3e6d4;
}

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

.site-footer__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1.2fr 1.4fr 1fr;
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 0.35rem;
}

.site-footer__tag {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.85;
}

.site-footer__label {
  display: inline-block;
  min-width: 3.2rem;
  color: var(--color-accent-soft);
  font-size: 0.85rem;
}

.site-footer__contact p {
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
  word-break: break-word;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  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(255, 255, 255, 0.15);
  font-size: 0.85rem;
  opacity: 0.75;
}

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

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

@keyframes cookie-up {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

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

.cookie-banner__inner {
  width: min(100%, 42rem);
  margin-inline: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.cookie-banner__text {
  flex: 1 1 16rem;
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-ink-soft);
}

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

/* Hero — full bleed */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  color: #f7f9fb;
  overflow: hidden;
}

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

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: hero-ken 18s ease-in-out infinite alternate;
}

@keyframes hero-ken {
  from { transform: scale(1); }
  to { transform: scale(1.06); }
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(14, 61, 53, 0.88) 0%, rgba(14, 61, 53, 0.55) 45%, rgba(28, 36, 48, 0.35) 100%),
    linear-gradient(0deg, rgba(28, 36, 48, 0.55) 0%, transparent 45%);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: var(--space-2xl) 0 var(--space-xl);
  animation: fade-up 0.9s var(--ease) both;
}

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

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  color: #fff;
  letter-spacing: -0.03em;
}

.hero__lead {
  max-width: 28rem;
  font-size: 1.1rem;
  color: rgba(247, 249, 251, 0.9);
  margin-bottom: var(--space-lg);
}

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

.hero--compact {
  min-height: 42vh;
}

.hero--compact .hero__content {
  padding-top: var(--space-xl);
}

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

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

.section__eyebrow {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section__intro {
  max-width: 38rem;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-lg);
}

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

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Offer list (not cards by default — interactive link rows) */
.offer-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.offer-list__item {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.6fr) auto;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
  transition: background 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.offer-list__item:hover {
  background: rgba(247, 249, 251, 0.7);
  padding-left: 0.5rem;
}

.offer-list__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0;
  color: var(--color-primary);
}

.offer-list__text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-ink-soft);
}

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

@media (max-width: 700px) {
  .offer-list__item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

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

.split__media {
  overflow: hidden;
  border-radius: var(--radius);
  min-height: 18rem;
}

.split__media img {
  width: 100%;
  height: 100%;
  min-height: 18rem;
  object-fit: cover;
}

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

/* Quote strip */
.quote-strip {
  background: var(--color-primary);
  color: #e8f0ed;
  padding: var(--space-xl) 0;
}

.quote-strip blockquote {
  margin: 0;
  max-width: 40rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  line-height: 1.45;
}

.quote-strip cite {
  display: block;
  margin-top: var(--space-md);
  font-style: normal;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-accent-soft);
}

/* Service grid for listing with images */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.service-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.service-link__img {
  overflow: hidden;
  margin-bottom: var(--space-sm);
  aspect-ratio: 3 / 2;
}

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

.service-link:hover .service-link__img img {
  transform: scale(1.04);
}

.service-link__title {
  margin: 0 0 0.35rem;
  color: var(--color-primary);
}

.service-link__text {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}

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

/* Detail */
.detail-hero {
  padding: var(--space-xl) 0 var(--space-md);
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin: var(--space-md) 0 var(--space-lg);
  font-size: 0.92rem;
  color: var(--color-ink-soft);
}

.detail-meta strong {
  color: var(--color-primary);
  font-weight: 600;
}

.checklist {
  list-style: none;
  margin: 0 0 var(--space-md);
  padding: 0;
}

.checklist li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.55rem;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--color-accent);
}

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

.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  align-items: start;
}

.steps li::before {
  content: counter(step);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.25rem;
}

/* Pricing */
.rate-block {
  border-top: 1px solid var(--color-line);
  padding: var(--space-md) 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-md);
  align-items: baseline;
}

.rate-block__title {
  margin: 0 0 0.25rem;
  font-size: 1.15rem;
}

.rate-block__note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}

.rate-block__price {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--color-primary);
  white-space: nowrap;
}

@media (max-width: 600px) {
  .rate-block {
    grid-template-columns: 1fr;
  }
}

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

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

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

.review__meta {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  margin: 0;
}

.story {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-left: 3px solid var(--color-accent);
  margin-top: var(--space-lg);
}

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

.post-teaser {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: var(--space-lg);
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.post-teaser__img {
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.post-teaser__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s var(--ease);
}

.post-teaser:hover .post-teaser__img img {
  transform: scale(1.03);
}

.post-teaser__date {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
}

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

.prose {
  max-width: 42rem;
}

.prose p {
  margin-bottom: 1.15rem;
}

/* 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: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-ink);
  transition: border-color 0.2s var(--ease);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: 2px solid rgba(14, 61, 53, 0.25);
  border-color: var(--color-primary);
}

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

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

.form__error.is-visible {
  display: block;
}

.form__status {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.95rem;
  display: none;
}

.form__status.is-success {
  display: block;
  background: rgba(26, 92, 69, 0.12);
  color: var(--color-success);
}

.form__status.is-error {
  display: block;
  background: rgba(155, 44, 44, 0.1);
  color: var(--color-error);
}

.contact-aside {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-top: 3px solid var(--color-primary);
}

.contact-aside p {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  word-break: break-word;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

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

/* Legal */
.legal h2 {
  margin-top: var(--space-lg);
  font-size: 1.25rem;
}

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

.legal th,
.legal td {
  border: 1px solid var(--color-line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

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

/* 404 */
.page-404 {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.page-404__code {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--color-primary);
  margin: 0;
  line-height: 1;
}

/* Process page */
.process-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--color-line);
}

.process-timeline li {
  position: relative;
  padding: 0 0 var(--space-lg) var(--space-lg);
}

.process-timeline li::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
}

.process-timeline h3 {
  margin-bottom: 0.35rem;
}