/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --blue-900: #0c2d48;
  --blue-700: #145da0;
  --blue-600: #1a6fc4;
  --blue-500: #2e86de;
  --blue-100: #e8f1fb;
  --blue-50: #f4f8fc;
  --gray-900: #1a1a2e;
  --gray-600: #555;
  --gray-400: #999;
  --gray-200: #e5e5e5;
  --gray-100: #f5f5f5;
  --white: #fff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1080px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--blue-600);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--blue-700);
}

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

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 74px;
  width: auto;
}

.logo-ace {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-700);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue-900);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--blue-600);
}

.nav-links .nav-cta {
  color: var(--blue-700);
  padding: 8px 20px;
  border: 1px solid var(--blue-700);
  border-radius: 6px;
  transition: all 0.2s;
}

.nav-links .nav-cta:hover {
  background: var(--blue-700);
  color: var(--white);
}

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }
}

/* ===== Hero ===== */
.hero {
  padding: 176px 0 100px;
  background: linear-gradient(160deg, var(--blue-50) 0%, var(--white) 50%);
}

.hero-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue-600);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--blue-900);
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--gray-600);
  max-width: 600px;
  margin-bottom: 40px;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--blue-700);
  color: var(--white);
  border-color: var(--blue-700);
}

.btn-primary:hover {
  background: var(--blue-900);
  border-color: var(--blue-900);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--blue-700);
  border-color: var(--gray-200);
}

.btn-outline:hover {
  border-color: var(--blue-700);
  color: var(--blue-700);
}

/* ===== Sections shared ===== */
section {
  padding: 100px 0;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue-600);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--blue-900);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--gray-600);
  max-width: 560px;
  margin-bottom: 48px;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  align-items: start;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

.about-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
}

.about-content p:last-child {
  margin-bottom: 0;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.stat {
  padding: 32px;
  background: var(--blue-50);
  border-radius: 12px;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue-700);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* ===== Services ===== */
.services {
  background: var(--gray-100);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.service-card {
  background: var(--white);
  padding: 40px 32px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s;
}

.service-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-100);
  color: var(--blue-700);
  border-radius: 10px;
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--blue-900);
  margin-bottom: 20px;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-list li {
  font-size: 0.9375rem;
  color: var(--gray-600);
  padding-left: 20px;
  position: relative;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--blue-500);
  border-radius: 50%;
}

/* ===== Qualifications ===== */
.qualifications {
  background: var(--white);
}

.quals-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .quals-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .quals-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.qual-item {
  padding: 28px 24px;
  background: var(--blue-50);
  border-radius: 10px;
  border-left: 3px solid var(--blue-700);
}

.qual-abbr {
  display: block;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--blue-700);
  margin-bottom: 6px;
}

.qual-name {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* ===== Contact ===== */
.contact {
  background: var(--blue-900);
  color: var(--white);
}

.contact .section-label {
  color: var(--blue-500);
}

.contact .section-title {
  color: var(--white);
}

.contact .section-desc {
  color: rgba(255, 255, 255, 0.65);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item svg {
  flex-shrink: 0;
  color: var(--blue-500);
  margin-top: 4px;
}

.contact-item strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.contact-item p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.contact-item a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.2s;
}

.contact-item a:hover {
  color: var(--white);
  border-bottom-color: rgba(255, 255, 255, 0.6);
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
}

.footer-inner {
  text-align: center;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* ===== Animations ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero-label,
  .hero-title,
  .hero-desc,
  .hero-actions {
    animation: fadeUp 0.6s ease-out both;
  }
  .hero-title { animation-delay: 0.1s; }
  .hero-desc { animation-delay: 0.2s; }
  .hero-actions { animation-delay: 0.3s; }

  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}