:root {
  --ks-blue-900: #144F7F;
  --ks-blue-700: #3477A5;
  --ks-blue-500: #5CA4CC;
  --ks-blue-400: #6698BA;
  --ks-gray-700: #949598;
  --ks-gray-200: #D0D6DA;
  --ks-white: #FFFFFF;

  --ink-900: #0f1f2e;
  --ink-700: #233748;
  --ink-500: #51616f;
  --bg-900: #0b1a28;
  --bg-100: #f4f7f9;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-soft: 0 18px 48px rgba(10, 28, 44, 0.18);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink-900);
  background: radial-gradient(circle at 20% 10%, rgba(92, 164, 204, 0.18), transparent 55%),
    radial-gradient(circle at 80% 5%, rgba(52, 119, 165, 0.2), transparent 60%),
    linear-gradient(180deg, #f8fbfd 0%, #eef3f7 100%);
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid rgba(20, 79, 127, 0.12);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.nav-toggle {
  display: none;
  border: 1px solid rgba(20, 79, 127, 0.2);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ks-blue-900);
  padding: 8px 12px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--ks-blue-900);
}

.logo img {
  width: 44px;
  height: auto;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-weight: 600;
  color: var(--ink-700);
}

.nav-links a {
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.nav-links a:hover {
  border-color: var(--ks-blue-500);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 8px;
  padding: 12px 0 20px;
}

.mobile-nav a {
  padding: 10px 0;
  border-bottom: 1px solid rgba(20, 79, 127, 0.08);
  font-weight: 600;
  color: var(--ink-700);
}

.hero {
  padding: 80px 0 60px;
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero-card {
  background: linear-gradient(160deg, rgba(20, 79, 127, 0.08), rgba(92, 164, 204, 0.18));
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-soft);
}

.hero h1 {
  font-size: clamp(2.4rem, 3vw, 3.4rem);
  margin: 0 0 12px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--ink-500);
  line-height: 1.6;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  background: var(--ks-blue-900);
  color: var(--ks-white);
  box-shadow: 0 12px 24px rgba(20, 79, 127, 0.22);
}

.button.secondary {
  border-color: var(--ks-blue-700);
  color: var(--ks-blue-900);
  background: rgba(255, 255, 255, 0.7);
}

.button:hover {
  transform: translateY(-2px);
}

.section {
  padding: 60px 0;
}

.section-title {
  font-size: 2rem;
  margin: 0 0 12px;
}

.section-subtitle {
  color: var(--ink-500);
  margin: 0 0 28px;
  max-width: 720px;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 14px 30px rgba(10, 28, 44, 0.08);
  border: 1px solid rgba(20, 79, 127, 0.08);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  color: var(--ink-500);
  line-height: 1.5;
}

.feature-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(20, 79, 127, 0.08);
  color: var(--ks-blue-900);
  font-weight: 600;
  font-size: 0.9rem;
}

.highlight-panel {
  background: linear-gradient(140deg, rgba(52, 119, 165, 0.12), rgba(255, 255, 255, 0.9));
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  gap: 20px;
  box-shadow: var(--shadow-soft);
}

.reference-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.reference-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(20, 79, 127, 0.1);
  box-shadow: 0 16px 28px rgba(10, 28, 44, 0.08);
  display: block;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.reference-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 36px rgba(10, 28, 44, 0.14);
}

.reference-media {
  height: 180px;
  width: 100%;
  overflow: hidden;
  background: #f3f6f8;
}

.reference-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.reference-body {
  padding: 18px;
}

.reference-body h3 {
  margin: 0 0 6px;
}

.reference-body p {
  margin: 0;
  color: var(--ink-500);
}

.reference-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--ks-blue-900);
  font-weight: 600;
}

.breadcrumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.9rem;
  color: var(--ink-500);
  margin-bottom: 16px;
}

.detail-hero {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.detail-hero img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(20, 79, 127, 0.1);
}

.detail-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.detail-list li {
  padding-left: 18px;
  position: relative;
  color: var(--ink-500);
}

.detail-list li::before {
  content: \"•\";
  position: absolute;
  left: 0;
  color: var(--ks-blue-700);
}

.gallery {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.gallery img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid rgba(20, 79, 127, 0.12);
  box-shadow: 0 12px 24px rgba(10, 28, 44, 0.12);
  cursor: zoom-in;
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 16, 26, 0.78);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 50;
}

.lightbox-overlay.hidden {
  display: none;
}

.lightbox-image {
  max-width: min(1100px, 92vw);
  max-height: 88vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 48px rgba(5, 16, 26, 0.4);
}

.status-box {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-weight: 600;
}

.status-box.success {
  background: rgba(30, 132, 73, 0.15);
  color: #1e8449;
  border: 1px solid rgba(30, 132, 73, 0.35);
}

.status-box.error {
  background: rgba(192, 57, 43, 0.12);
  color: #a93226;
  border: 1px solid rgba(169, 50, 38, 0.35);
}

.form-card {
  background: rgba(255, 255, 255, 0.9);
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(20, 79, 127, 0.1);
}

form {
  display: grid;
  gap: 16px;
}

label {
  font-weight: 600;
  color: var(--ink-700);
}

input, textarea {
  font-family: inherit;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 79, 127, 0.2);
  background: #ffffff;
  font-size: 1rem;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.site-footer {
  margin-top: 40px;
  padding: 32px 0 40px;
  border-top: 1px solid rgba(20, 79, 127, 0.1);
  color: var(--ink-500);
}

.footer-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-logo {
  max-width: 240px;
  margin-bottom: 14px;
  height: auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(20, 79, 127, 0.12);
  font-size: 0.9rem;
  color: var(--ks-blue-900);
  font-weight: 600;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 20px;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(92, 164, 204, 0.18);
  color: var(--ks-blue-900);
  font-size: 0.85rem;
  font-weight: 600;
}

@media (max-width: 760px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header.is-open .mobile-nav {
    display: flex;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .hero-logo {
    max-width: 160px;
  }
}