/* ========================================
   0017 - FRESH GREEN 清新活力风
   ======================================== */

:root {
  --green-500: #10b981;
  --green-600: #059669;
  --green-700: #047857;
  --teal-400: #2dd4bf;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--gray-700);
  background: #ffffff;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-logo {
  color: var(--green-600);
  font-weight: 800;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  color: var(--gray-600);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--green-600);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--green-500);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

.btn-green {
  background: linear-gradient(135deg, var(--green-500), var(--green-600));
  color: white;
  font-weight: 600;
  padding: 0.625rem 1.5rem;
  border-radius: 9999px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

/* Hero */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 30%, #faf5ff 70%, #f0fdf4 100%);
  padding-top: 80px;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(45, 212, 191, 0.1));
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--green-600);
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--gray-900);
}

.hero-title .highlight {
  color: var(--green-600);
  position: relative;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 8px;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 4px;
  z-index: -1;
}

/* Features */
.feature-card {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 1.5rem;
  padding: 2rem;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--green-500);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.1);
}

.feature-icon-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(45, 212, 191, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-600);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

/* Stats */
.stats-section {
  background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
  border-radius: 2rem;
  position: relative;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--green-600);
}

/* Testimonials */
.testimonial-card {
  background: white;
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  position: relative;
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.testimonial-quote {
  font-size: 4rem;
  color: var(--green-500);
  opacity: 0.3;
  line-height: 1;
  position: absolute;
  top: 10px;
  left: 20px;
}

.stars-green {
  color: var(--green-500);
}

/* FAQ */
.faq-item {
  border-left: 3px solid transparent;
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.faq-item:hover,
.faq-item.active {
  border-left-color: var(--green-500);
}

.faq-item .faq-number {
  color: var(--green-500);
  font-weight: 700;
  margin-right: 0.75rem;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin-top 0.4s ease;
  color: var(--gray-600);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  margin-top: 0.75rem;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, #059669, #047857, #065f46);
  border-radius: 2rem;
}

.btn-white {
  background: white;
  color: var(--green-700);
  font-weight: 700;
  padding: 0.875rem 2.5rem;
  border-radius: 9999px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-white-outline {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: white;
  font-weight: 700;
  padding: 0.875rem 2.5rem;
  border-radius: 9999px;
  transition: all 0.3s ease;
}

.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* About Page */
.about-hero {
  min-height: 50vh;
  background: linear-gradient(135deg, #ecfdf5, #f0fdf4, #faf5ff);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
}

/* Contact Page */
.contact-section {
  padding-top: 100px;
}

.contact-card {
  background: white;
  border-radius: 1.5rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  padding: 3rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  outline: none;
  font-size: 0.95rem;
}

.form-input:focus {
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: #9ca3af;
}

.footer a {
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--green-400);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.875rem;
  }
  .contact-card {
    padding: 1.5rem;
  }
}