:root {
  --primary: #0C2D48;
  --primary-dark: #071829;
  --accent: #18E2F7;
  --bg-light: #F4F5F7;
  --text-main: #2B2B2B;
  --text-muted: #777;
  --white: #ffffff;
  --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.06);
  --radius-lg: 16px;
  --radius-md: 10px;
  --transition-fast: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

main {
  min-height: calc(100vh - 160px);
}

.site-header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  position: sticky;
  top: 0;
  z-index: 10;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.navbar-logo img {
  height: 34px;
  width: auto;
}

.navbar-logo-text-main {
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.9rem;
  color: var(--primary);
}

.navbar-logo-text-sub {
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-fast);
}

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

.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 18px;
  border-radius: 999px;
  background-color: var(--accent);
}

.hero {
  padding: 64px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 32px;
  align-items: center;
}

.hero-title {
  font-size: 2.4rem;
  line-height: 1.15;
  color: var(--primary);
  margin-bottom: 12px;
}

.hero-highlight {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(24, 226, 247, 0.1);
  color: var(--primary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 16px;
}

.hero-text {
  font-size: 1rem;
  color: #555;
  max-width: 540px;
}

.hero-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid rgba(12,45,72,0.18);
  background-color: var(--white);
  color: var(--primary);
}

.btn-ghost:hover {
  background-color: #f5f7fa;
}

.hero-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px 20px 16px;
  box-shadow: var(--shadow-soft);
}

.hero-card-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.hero-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
}

.hero-card-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.hero-card-list li {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 6px;
}

.hero-card-tagline {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.section {
  padding: 40px 0;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 620px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 16px;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  color: var(--primary);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}

.list-check {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.list-check li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.list-check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  font-size: 0.8rem;
  color: var(--accent);
}

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

.portfolio-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 16px 16px 14px;
}

.portfolio-tag {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.portfolio-name {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.portfolio-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.portfolio-desc {
  font-size: 0.9rem;
  color: #555;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 32px;
}

.form-group {
  margin-bottom: 12px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.form-control,
.form-textarea {
  width: 100%;
  border-radius: 999px;
  border: 1px solid #d0d7de;
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              background-color var(--transition-fast);
}

.form-textarea {
  border-radius: 12px;
  min-height: 120px;
  resize: vertical;
}

.form-control:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(12,45,72,0.12);
  background-color: #fff;
}

.site-footer {
  background-color: var(--primary);
  color: var(--white);
  padding: 20px 0 16px;
  margin-top: 40px;
}

.site-footer small {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
}

@media (max-width: 900px) {
  .hero-grid,
  .grid-2,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2rem;
  }
}