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

body {
  font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #1e293b;
  background: #ffffff;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  border-radius: 40px;
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: #2563eb;
  color: white;
  box-shadow: 0 8px 16px -6px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 12px 20px -8px rgba(37, 99, 235, 0.4);
}

.btn-outline {
  background: transparent;
  color: #2563eb;
  border: 2px solid #2563eb;
}

.btn-outline:hover {
  background: #2563eb;
  color: white;
}

/* header */
.header {
  padding: 1.2rem 0;
  background: white;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: #0f2b4b;
  letter-spacing: -0.5px;
}

.logo span {
  color: #2563eb;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  font-weight: 500;
}

.nav-links a {
  color: #334155;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #2563eb;
}

.nav-right {
  display: flex;
  gap: 1.2rem;
}

/* hero */
.hero {
  padding: 4rem 0 5rem;
  background: linear-gradient(145deg, #f8fafc 0%, #ffffff 80%);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.2;
  color: #0b1e33;
  margin-bottom: 1.2rem;
}

.hero h1 span {
  color: #2563eb;
  border-bottom: 4px solid #bfdbfe;
  display: inline-block;
}

.hero p {
  font-size: 1.2rem;
  color: #475569;
  margin-bottom: 2.2rem;
  max-width: 550px;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  background: #e2e8f0;
  border-radius: 24px;
  padding: 1.8rem;
  box-shadow: 0 30px 40px -20px rgba(0,0,0,0.2);
  text-align: center;
}

.hero-image img {
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

/* features */
.features {
  padding: 5rem 0;
  background: #ffffff;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #0f2b4b;
}

.section-sub {
  text-align: center;
  font-size: 1.2rem;
  color: #64748b;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.feature-card {
  background: #f8fafc;
  padding: 2rem 1.8rem;
  border-radius: 28px;
  transition: 0.25s ease;
  border: 1px solid #e9eef3;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 35px -12px rgba(0,70,150,0.15);
  border-color: #b9d5fd;
}

.feature-icon {
  background: #2563eb10;
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: #2563eb;
  font-size: 2rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: #475569;
}

/* about / stats */
.about {
  padding: 4rem 0;
  background: #f1f5f9;
}

.about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about h2 {
  font-size: 2.3rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.2rem;
}

.about h2 i {
  color: #2563eb;
}

.about p {
  color: #334155;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
}

.stat-item h4 {
  font-size: 2rem;
  font-weight: 700;
  color: #2563eb;
}

.stat-item p {
  font-size: 1rem;
  color: #475569;
  margin: 0;
}

.about-image {
  background: #cbd5e1;
  border-radius: 40px;
  padding: 1.5rem;
  box-shadow: 0 30px 35px -15px rgba(0,0,0,0.1);
}

.about-image img {
  border-radius: 24px;
}

/* testimonials */
.testimonials {
  padding: 5rem 0;
  background: white;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testi-card {
  background: #f8fafc;
  border-radius: 30px;
  padding: 2rem 1.8rem;
  border: 1px solid #e9edf2;
}

.testi-card i.fa-quote-left {
  color: #2563eb40;
  font-size: 2rem;
  margin-bottom: 1rem;
}

.testi-card p {
  font-style: italic;
  margin-bottom: 1.5rem;
  color: #1e293b;
}

.testi-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testi-author img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #a0c4ff;
  object-fit: cover;
}

.testi-author h5 {
  font-weight: 600;
}

.testi-author span {
  color: #64748b;
  font-size: 0.9rem;
}

/* pricing */
.pricing {
  padding: 5rem 0;
  background: #f8fafc;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.pricing-card {
  background: white;
  border-radius: 32px;
  padding: 2.2rem 1.8rem;
  border: 2px solid #e2e8f0;
  transition: 0.2s;
  position: relative;
}

.pricing-card.popular {
  border-color: #2563eb;
  box-shadow: 0 15px 30px -10px #2563eb30;
  transform: scale(1.02);
}

.popular-tag {
  position: absolute;
  top: -12px;
  left: 30px;
  background: #2563eb;
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 1rem;
  border-radius: 30px;
}

.pricing-card h4 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0f2b4b;
  margin: 1rem 0;
}

.pricing-card .price span {
  font-size: 1rem;
  font-weight: 400;
  color: #64748b;
}

.pricing-card ul {
  margin: 1.8rem 0;
}

.pricing-card li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #eef2f6;
}

.pricing-card li i {
  color: #2563eb;
  margin-right: 0.8rem;
}

.pricing-card .btn {
  width: 100%;
  text-align: center;
}

/* CTA */
.cta {
  padding: 4rem 0;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: white;
  text-align: center;
}

.cta h2 {
  font-size: 2.8rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.cta p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.cta .btn-primary {
  background: white;
  color: #1e3a8a;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.cta .btn-primary:hover {
  background: #f0f4ff;
}

/* footer */
.footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 3rem 0 2rem;
}

.footer .container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
}

.footer-logo span {
  color: #3b82f6;
}

.footer p {
  margin: 1rem 0;
}

.social-icons {
  display: flex;
  gap: 1.2rem;
  font-size: 1.4rem;
}

.footer h5 {
  color: white;
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.footer ul li {
  margin-bottom: 0.7rem;
}

.footer ul a:hover {
  color: white;
}

.copyright {
  text-align: center;
  padding-top: 2.5rem;
  margin-top: 2rem;
  border-top: 1px solid #1e293b;
  color: #94a3b8;
}

/* responsive */
@media (max-width: 800px) {
  .hero .container, .about .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }
  .stats { justify-content: center; }
  .header .container { flex-direction: column; gap: 1rem; }
  .nav-links { gap: 1.2rem; flex-wrap: wrap; justify-content: center; }
  .footer .container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 500px) {
  .hero h1 { font-size: 2.5rem; }
  .section-title { font-size: 2rem; }
  .footer .container { grid-template-columns: 1fr; }
}

/* placeholder image style */
.placeholder-img {
  background: linear-gradient(145deg, #b1c9f0, #7ca5f0);
  width: 100%;
  height: auto;
  border-radius: 20px;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  aspect-ratio: 16/9;
  font-size: 1.2rem;
}

.placeholder-img i { margin-right: 10px; font-size: 2rem; }