/* styles.css */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  line-height: 1.5;
  color: #1e1e2f;
  background-color: #ffffff;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 64px 0;
}

/* hero section */
.hero {
  background: linear-gradient(145deg, #fff9e6 0%, #fff2d9 100%);
  text-align: center;
  padding: 80px 0;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  max-width: 900px;
}

.hero-title .highlight {
  color: #b45309;
  background: #fef3c7;
  padding: 0 8px;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: #2d2d2d;
  max-width: 700px;
  margin-bottom: 16px;
}

.btn-primary {
  display: inline-block;
  background-color: #fbbf24;
  color: #1e1e2f;
  font-weight: 700;
  font-size: 1.5rem;
  padding: 18px 48px;
  border-radius: 60px;
  text-decoration: none;
  box-shadow: 0 10px 20px rgba(251, 191, 36, 0.4);
  transition: all 0.2s ease;
  border: 2px solid #d97706;
  letter-spacing: 0.5px;
  margin: 8px 0 16px;
}

.btn-primary:hover {
  background-color: #f59e0b;
  transform: scale(1.02);
  box-shadow: 0 15px 25px rgba(245, 158, 11, 0.5);
}

.btn-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 8px 0;
}

.btn-secondary {
  display: inline-block;
  background-color: #2d2d2d;
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
  padding: 12px 28px;
  border-radius: 40px;
  text-decoration: none;
  transition: background 0.2s;
  border: 1px solid #444;
}

.btn-secondary:hover {
  background-color: #1f1f1f;
}

.hero-trust {
  font-size: 1rem;
  color: #4b5563;
  margin-top: 16px;
}

/* feature sections (图文板块) */
.feature {
  background-color: #ffffff;
}

.feature-container {
  display: flex;
  align-items: center;
  gap: 48px;
}

.reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
}

.feature-text h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: #1e1e2f;
}

.feature-text p {
  font-size: 1.1rem;
  color: #2d2d2d;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  margin-bottom: 12px;
  font-size: 1rem;
  display: flex;
  align-items: center;
}

.feature-list.numbered {
  list-style: decimal;
  padding-left: 20px;
}

.feature-list.numbered li {
  display: list-item;
  margin-bottom: 10px;
}

.feature-media {
  flex: 1;
}

.feature-media img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 20px 30px -10px rgba(0,0,0,0.15);
  display: block;
}

/* services cards */
.services {
  background-color: #fafaf9;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  color: #1e1e2f;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.card {
  background: white;
  padding: 32px 20px;
  border-radius: 24px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.03);
  text-align: center;
  transition: transform 0.2s;
  border: 1px solid #f3f4f6;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 25px rgba(0,0,0,0.05);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.card p {
  color: #4b5563;
}

/* usp grid */
.usp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.usp-item {
  background: #fff7ed;
  padding: 28px 20px;
  border-radius: 20px;
  border-left: 6px solid #fbbf24;
}

.usp-item h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* testimonials (图文板块) */
.testimonials {
  background: #fefce8;
}

.testimonial-item {
  background: white;
  padding: 20px;
  border-radius: 16px;
  margin-bottom: 20px;
  box-shadow: 0 5px 10px rgba(0,0,0,0.02);
}

.testimonial-item p {
  font-style: italic;
  margin-bottom: 8px;
}

.testimonial-item cite {
  font-weight: 600;
  color: #b45309;
}

/* faq */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.faq-item {
  background: #f9fafb;
  padding: 24px;
  border-radius: 16px;
}

.faq-item h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: #2d2d2d;
}

.faq-item p {
  color: #4b5563;
}

/* blog (图文板块) */
.blog {
  background: #ffffff;
}

.blog article {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px dashed #e5e7eb;
}

.blog article h3 {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.read-more {
  color: #b45309;
  text-decoration: none;
  font-weight: 500;
  display: inline-block;
  margin-top: 8px;
}

.read-more:hover {
  text-decoration: underline;
}

/* final cta */
.final-cta {
  background: linear-gradient(145deg, #1e1e2f 0%, #2d2d44 100%);
  color: white;
  text-align: center;
}

.final-cta h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.final-cta p {
  font-size: 1.2rem;
  margin-bottom: 32px;
  color: #e0e7ff;
}

.final-cta .btn-primary {
  background-color: #fbbf24;
  border-color: #d97706;
  color: #1e1e2f;
}

.final-cta .btn-secondary {
  background-color: #4b5563;
  border-color: #6b7280;
}

.final-cta .btn-secondary:hover {
  background-color: #374151;
}

/* footer */
footer {
  background: #111827;
  color: #9ca3af;
  padding: 32px 0;
  text-align: center;
  font-size: 0.9rem;
}

footer a {
  color: #fbbf24;
  text-decoration: none;
}

/* responsive */
@media (max-width: 900px) {
  .feature-container {
    flex-direction: column;
  }
  .reverse {
    flex-direction: column;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .section-title {
    font-size: 2rem;
  }
  .btn-primary {
    font-size: 1.2rem;
    padding: 14px 32px;
  }
}

@media (max-width: 480px) {
  .btn-group {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
  }
  .btn-secondary {
    width: 100%;
  }
}