:root {
  --blue: #6BB3D4;
  --blue-dark: #4A94B8;
  --blue-soft: #EAF5FA;
  --green: #8FD4B4;
  --green-soft: #EAF8F2;
  --ink: #1C2A38;
  --muted: #5C6B7A;
  --line: #D5E6EF;
  --bg: #F7FBFD;
  --white: #FFFFFF;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(74, 148, 184, 0.12);
  --ease: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all var(--ease);
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(107, 179, 212, 0.35);
}

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

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.btn-block { width: 100%; }

/* Header */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(247, 251, 253, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), background var(--ease);
}

.header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo-mark {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
}

.logo-img-footer {
  height: 56px;
  margin-bottom: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 8px;
  transition: color var(--ease), background var(--ease);
}

.nav-link:hover {
  color: var(--ink);
  background: var(--blue-soft);
}

.btn-nav {
  background: var(--blue) !important;
  color: var(--white) !important;
  border-radius: 999px !important;
  padding: 8px 16px !important;
  margin-left: 6px;
}

.btn-nav:hover { background: var(--blue-dark) !important; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all var(--ease);
}

/* Hero */
.hero {
  padding: 140px 0 90px;
  background:
    radial-gradient(ellipse 70% 50% at 80% 10%, rgba(143, 212, 180, 0.2), transparent),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(107, 179, 212, 0.15), transparent),
    var(--bg);
}

.hero-inner { max-width: 640px; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue-dark);
  background: var(--white);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.1rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 32px;
  max-width: 520px;
}

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

/* Sections */
.section {
  padding: 80px 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-dark);
  margin-bottom: 10px;
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

/* About */
.about { background: var(--white); }

.about-body {
  max-width: 640px;
}

.about-body p {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 16px;
  line-height: 1.75;
}

.about-body strong { color: var(--ink); }

/* Services */
.services { background: var(--bg); }

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--ease), border-color var(--ease);
}

.card:hover {
  box-shadow: var(--shadow);
  border-color: var(--blue);
}

.card-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-soft);
  border-radius: 10px;
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.card p {
  font-size: 0.92rem;
  color: var(--muted);
}

/* Lanes */
.lanes { background: var(--white); }

.lanes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.lane-block {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.lane-block.note {
  background: var(--green-soft);
  border-color: #C5EBD9;
}

.lane-block h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.lane-block p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.55;
}

.lanes-extra {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.6;
}

/* Contact */
.contact { background: var(--bg); }

.contact-intro {
  color: var(--muted);
  margin-bottom: 36px;
  max-width: 480px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 40px;
  align-items: start;
}

.contact-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.contact-item a {
  color: var(--blue-dark);
  font-weight: 600;
}

.contact-item a:hover { text-decoration: underline; }

/* Form */
.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group { margin-bottom: 14px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.8rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font: inherit;
  font-size: 0.95rem;
  background: var(--bg);
  color: var(--ink);
  transition: border-color var(--ease), box-shadow var(--ease);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(107, 179, 212, 0.18);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-note {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.5;
}

/* Footer */
.footer {
  background: var(--ink);
  color: #9AABBA;
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand .logo-img-footer {
  background: var(--white);
  border-radius: 8px;
  padding: 4px;
}
.footer-brand p { font-size: 0.85rem; }
.footer-copy { font-size: 0.85rem; }

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

@media (max-width: 600px) {
  .nav {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    box-shadow: var(--shadow);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle { display: flex; }
  .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .btn-nav { margin-left: 0 !important; width: 100%; }

  .cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 120px 0 60px; }
  .section { padding: 60px 0; }
  .form { padding: 20px; }
}