/* Secured Data System Business — contract ops theme
   Palette: deep pine, warm parchment, clay accent
*/

:root {
  --color-ink: #1b3a34;
  --color-ink-soft: #2d5249;
  --color-pine: #0f2a25;
  --color-parchment: #f3ece0;
  --color-parchment-deep: #e7dcc8;
  --color-clay: #c47a4a;
  --color-clay-dark: #9a5a32;
  --color-paper: #faf7f1;
  --color-line: #c9bda8;
  --color-muted: #5c6b66;
  --color-error: #8b2e2e;
  --color-ok: #1f5c45;
  --font-display: "Gowun Batang", "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;
  --radius: 2px;
  --max: 72rem;
  --content: 42rem;
  --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, 122, 74, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(27, 58, 52, 0.08), transparent 50%),
    linear-gradient(180deg, var(--color-parchment) 0%, var(--color-paper) 40%, var(--color-parchment-deep) 100%);
  min-height: 100vh;
}

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

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-pine);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); margin: 0 0 var(--space-md); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 var(--space-md); }
h3 { font-size: 1.25rem; margin: 0 0 var(--space-sm); }

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;
}

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(243, 236, 224, 0.92);
  backdrop-filter: blur(8px);
  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-md);
}

.site-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-pine);
  text-decoration: none;
  letter-spacing: -0.02em;
  max-width: 14rem;
  line-height: 1.3;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  align-items: center;
}

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

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

.nav-cta {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  background: var(--color-ink);
  color: var(--color-parchment) !important;
  border-radius: var(--radius);
}

.nav-cta:hover {
  background: var(--color-clay-dark);
  color: var(--color-paper) !important;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-line);
  padding: 0.55rem;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__bar {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--color-ink);
}

@media (max-width: 880px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-parchment);
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-md);
    display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.25s var(--ease), background 0.2s ease, color 0.2s ease;
}

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

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

.btn--primary:hover {
  background: var(--color-clay-dark);
  color: var(--color-paper);
}

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

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

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

/* Brand mark */
.brand-mark {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  font-weight: 700;
  color: var(--color-clay);
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

/* Home hero — full bleed */
.home-hero {
  position: relative;
  min-height: min(92vh, 48rem);
  display: grid;
  align-items: end;
  color: var(--color-parchment);
  overflow: hidden;
}

.home-hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(15, 42, 37, 0.88) 0%, rgba(15, 42, 37, 0.55) 45%, rgba(27, 58, 52, 0.35) 100%),
    var(--hero-img) center/cover no-repeat;
  transform: scale(1.04);
  animation: hero-drift 18s var(--ease) infinite alternate;
}

@keyframes hero-drift {
  from { transform: scale(1.04) translate(0, 0); }
  to { transform: scale(1.08) translate(-1.5%, -1%); }
}

.home-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: rise-in 0.9s var(--ease) both;
}

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

.home-hero h1 {
  color: var(--color-parchment);
  max-width: 16ch;
  margin-bottom: var(--space-md);
}

.home-hero__lead {
  max-width: 34rem;
  font-size: 1.1rem;
  color: var(--color-parchment-deep);
  margin-bottom: var(--space-lg);
}

.home-hero .btn--primary {
  background: var(--color-clay);
  color: var(--color-pine);
}

.home-hero .btn--primary:hover {
  background: var(--color-parchment);
}

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

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

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

.section--alt {
  background: rgba(231, 220, 200, 0.45);
}

.section__head {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-lg);
}

.section__head p {
  color: var(--color-muted);
  max-width: 38rem;
}

.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);
}

/* Offer preview list — not card grid SaaS style */
.offer-rail {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.offer-rail__item {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr) auto;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
  transition: background 0.25s ease;
}

.offer-rail__item:hover {
  background: rgba(255, 255, 255, 0.35);
}

.offer-rail__item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  filter: saturate(0.85);
}

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

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

.offer-rail__arrow {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-clay);
  padding-right: var(--space-sm);
}

@media (max-width: 720px) {
  .offer-rail__item {
    grid-template-columns: 1fr;
  }
  .offer-rail__arrow { display: none; }
}

/* Evidence / quote */
.quote-block {
  width: min(100% - 2rem, 40rem);
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.quote-block blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  line-height: 1.55;
  color: var(--color-pine);
}

.quote-block cite {
  display: block;
  margin-top: var(--space-md);
  font-style: normal;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* Process steps */
.steps {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  counter-reset: step;
}

.steps__item {
  position: relative;
  padding-top: var(--space-lg);
}

.steps__item::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-clay);
  display: block;
  margin-bottom: var(--space-sm);
}

@media (max-width: 720px) {
  .steps { grid-template-columns: 1fr; }
}

/* Page shells */
.page-intro {
  width: min(100% - 2rem, var(--max));
  margin: var(--space-xl) auto var(--space-lg);
}

.page-intro__lead,
.page-hero__lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 36rem;
}

.page-hero--bleed {
  position: relative;
  min-height: 42vh;
  display: grid;
  align-items: end;
  color: var(--color-parchment);
  margin-bottom: var(--space-xl);
}

.page-hero__media {
  position: absolute;
  inset: 0;
  background: var(--hero-img) center/cover no-repeat;
}

.page-hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 42, 37, 0.35), rgba(15, 42, 37, 0.82));
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: var(--space-xl) 0 var(--space-lg);
}

.page-hero__inner h1,
.page-hero__inner .brand-mark {
  color: var(--color-parchment);
}

.page-hero__lead { color: var(--color-parchment-deep); }

.prose {
  padding-bottom: var(--space-xl);
}

.prose h2 { margin-top: var(--space-xl); }
.prose ul, .prose ol { padding-left: 1.25rem; margin-bottom: var(--space-md); }
.prose li { margin-bottom: 0.4rem; }

/* Service listing */
.service-list {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-xl);
  display: grid;
  gap: var(--space-lg);
}

.service-list__row {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
}

.service-list__row img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.service-list__row:hover h2 {
  color: var(--color-clay-dark);
}

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

.service-detail__figure {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-lg);
}

.service-detail__figure img {
  width: 100%;
  max-height: 28rem;
  object-fit: cover;
}

.flagship-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.flagship-meta dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  margin-bottom: 0.2rem;
}

.flagship-meta dd {
  margin: 0;
  font-weight: 600;
}

/* Pricing */
.rate-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.98rem;
}

.rate-table th,
.rate-table td {
  text-align: left;
  padding: 0.85rem 0.5rem;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.rate-table th {
  font-weight: 600;
  color: var(--color-pine);
}

.rate-note {
  font-size: 0.92rem;
  color: var(--color-muted);
}

/* Reviews */
.review-stack {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-xl);
  display: grid;
  gap: var(--space-lg);
}

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

.review-item__body {
  font-size: 1.05rem;
  max-width: 40rem;
}

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

.case-story {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--space-lg);
  align-items: start;
}

.case-story img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

@media (max-width: 720px) {
  .case-story { grid-template-columns: 1fr; }
}

/* Blog */
.post-list {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-xl);
  display: grid;
  gap: 0;
}

.post-list__item {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
}

.post-list__item img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.post-list__item time {
  font-size: 0.85rem;
  color: var(--color-muted);
}

@media (max-width: 640px) {
  .post-list__item { grid-template-columns: 1fr; }
}

.post-cover {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-lg);
}

.post-cover img {
  width: 100%;
  max-height: 26rem;
  object-fit: cover;
}

/* Forms */
.form {
  display: grid;
  gap: var(--space-md);
}

.form__field {
  display: grid;
  gap: 0.35rem;
}

.form__field label {
  font-weight: 600;
  font-size: 0.92rem;
}

.form__field input,
.form__field select,
.form__field textarea {
  font: inherit;
  padding: 0.7rem 0.85rem;
  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-clay);
  outline-offset: 1px;
}

.form__error {
  color: var(--color-error);
  font-size: 0.88rem;
  min-height: 1.2em;
}

.form__status {
  padding: var(--space-md);
  border: 1px solid var(--color-line);
  display: none;
}

.form__status.is-success {
  display: block;
  border-color: var(--color-ok);
  color: var(--color-ok);
  background: rgba(31, 92, 69, 0.08);
}

.form__status.is-error {
  display: block;
  border-color: var(--color-error);
  color: var(--color-error);
  background: rgba(139, 46, 46, 0.08);
}

.contact-grid {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--space-xl);
}

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

.contact-aside {
  padding: var(--space-md);
  background: rgba(231, 220, 200, 0.5);
  border-left: 3px solid var(--color-clay);
}

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

/* Footer */
.site-footer {
  background: var(--color-pine);
  color: var(--color-parchment-deep);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
}

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

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

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

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

.site-footer__tag {
  color: var(--color-parchment-deep);
  font-size: 0.95rem;
}

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

.site-footer li { margin-bottom: 0.35rem; }

.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, 213, 183, 0.2);
  font-size: 0.85rem;
  color: rgba(232, 213, 183, 0.7);
}

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

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--color-ink);
  color: var(--color-parchment);
  padding: var(--space-md);
  border-top: 2px solid var(--color-clay);
  animation: rise-in 0.45s var(--ease);
}

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

.cookie-banner__inner {
  width: min(100% - 1rem, var(--max));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
}

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

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

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

/* 404 */
.error-page {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: var(--space-xl) 1rem;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  color: var(--color-clay);
}

/* Legal tables */
.cookie-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: var(--space-md) 0;
}

.cookie-table th,
.cookie-table td {
  border: 1px solid var(--color-line);
  padding: 0.6rem;
  text-align: left;
  vertical-align: top;
}

.cookie-table th {
  background: rgba(231, 220, 200, 0.6);
}

/* CTA band */
.cta-band {
  width: min(100% - 2rem, var(--max));
  margin: var(--space-xl) auto;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-ink);
  color: var(--color-parchment);
}

.cta-band h2 { color: var(--color-parchment); }
.cta-band p { color: var(--color-parchment-deep); max-width: 32rem; }
.cta-band .btn--primary {
  background: var(--color-clay);
  color: var(--color-pine);
}