/* ============================================================
   0029 WARM EARTH — Warm, Cozy Landing Page
   Color Palette: amber, warm cream, stone, brown
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --clr-amber-50: #fffbeb;
  --clr-amber-100: #fef3c7;
  --clr-amber-200: #fde68a;
  --clr-amber-300: #fcd34d;
  --clr-amber-400: #fbbf24;
  --clr-amber-500: #f59e0b;
  --clr-amber-600: #d97706;
  --clr-amber-700: #b45309;
  --clr-amber-800: #92400e;
  --clr-amber-900: #78350f;

  --clr-stone-50: #fafaf9;
  --clr-stone-100: #f5f5f4;
  --clr-stone-200: #e7e5e4;
  --clr-stone-300: #d6d3d1;
  --clr-stone-400: #a8a29e;
  --clr-stone-500: #78716c;
  --clr-stone-600: #57534e;
  --clr-stone-700: #44403c;
  --clr-stone-800: #292524;
  --clr-stone-900: #1c1917;

  --clr-warm-gray-50: #fafaf9;
  --clr-warm-gray-100: #f5f5f4;
  --clr-warm-gray-200: #e7e5e4;
  --clr-warm-gray-800: #292524;

  --clr-cream: #fef9f0;
  --clr-cream-dark: #f5efe4;
  --clr-brown-light: #c4a882;
  --clr-brown: #8b6914;
  --clr-brown-dark: #5c3d0e;

  --shadow-warm-sm: 0 1px 3px rgba(120, 80, 20, 0.08), 0 1px 2px rgba(120, 80, 20, 0.06);
  --shadow-warm: 0 4px 14px rgba(120, 80, 20, 0.10), 0 2px 6px rgba(120, 80, 20, 0.06);
  --shadow-warm-lg: 0 12px 32px rgba(120, 80, 20, 0.12), 0 4px 12px rgba(120, 80, 20, 0.06);
  --shadow-warm-xl: 0 20px 48px rgba(120, 80, 20, 0.14), 0 8px 20px rgba(120, 80, 20, 0.08);

  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;

  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  color: var(--clr-stone-700);
  background-color: var(--clr-cream);
  line-height: 1.7;
  overflow-x: hidden;
}

/* --- Warm Gradient Backgrounds --- */
.warm-gradient-hero {
  background: linear-gradient(170deg, #fef9f0 0%, #fef3c7 30%, #fde9c0 60%, #fef9f0 100%);
}

.warm-gradient-section {
  background: linear-gradient(180deg, var(--clr-cream) 0%, var(--clr-amber-50) 50%, var(--clr-cream) 100%);
}

/* --- Decorative Warm Circles --- */
.warm-decoration {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
}

.warm-dec-1 {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, var(--clr-amber-400), transparent 70%);
  top: -80px;
  right: -60px;
}

.warm-dec-2 {
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, var(--clr-amber-300), transparent 70%);
  bottom: -60px;
  left: -40px;
}

.warm-dec-3 {
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, var(--clr-amber-200), transparent 70%);
  top: 50%;
  left: 10%;
}

/* --- Navbar --- */
.warm-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(254, 249, 240, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(217, 119, 6, 0.1);
  transition: all var(--transition-base);
}

.warm-navbar.scrolled {
  background: rgba(255, 251, 235, 0.95);
  box-shadow: var(--shadow-warm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-amber-700);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo i {
  font-size: 1.5rem;
  color: var(--clr-amber-600);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--clr-stone-600);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-amber-500);
  border-radius: 2px;
  transition: width var(--transition-base);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta-btn {
  background: var(--clr-amber-600) !important;
  color: #fff !important;
  padding: 0.6rem 1.5rem !important;
  border-radius: 9999px !important;
  font-weight: 600 !important;
  transition: all var(--transition-base) !important;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.3);
}

.nav-cta-btn:hover {
  background: var(--clr-amber-700) !important;
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.4);
  transform: translateY(-1px);
}

.nav-cta-btn::after {
  display: none !important;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1010;
}

.mobile-menu-btn span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--clr-stone-600);
  border-radius: 3px;
  transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 4.5rem;
  left: 0;
  right: 0;
  background: rgba(255, 251, 235, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.5rem;
  border-bottom: 1px solid rgba(217, 119, 6, 0.12);
  box-shadow: var(--shadow-warm-lg);
  z-index: 999;
  flex-direction: column;
  gap: 1rem;
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition-spring);
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu a {
  display: block;
  text-decoration: none;
  color: var(--clr-stone-600);
  font-weight: 500;
  font-size: 1.05rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.mobile-menu a:hover {
  background: var(--clr-amber-100);
  color: var(--clr-amber-700);
}

.mobile-menu .mobile-cta {
  background: var(--clr-amber-600);
  color: #fff !important;
  text-align: center;
  border-radius: 9999px;
  font-weight: 600;
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--clr-stone-800);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--clr-amber-600), var(--clr-amber-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--clr-stone-500);
  margin-bottom: 2rem;
  max-width: 480px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--clr-amber-600);
  color: #fff;
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.35);
}

.btn-primary:hover {
  background: var(--clr-amber-700);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--clr-amber-700);
  border: 2px solid var(--clr-amber-400);
}

.btn-outline:hover {
  background: var(--clr-amber-50);
  border-color: var(--clr-amber-500);
  transform: translateY(-2px);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-placeholder {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--clr-amber-100), var(--clr-amber-200), var(--clr-amber-100));
  border-radius: var(--radius-3xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-warm-xl);
  position: relative;
  overflow: hidden;
}

.hero-image-placeholder i {
  font-size: 5rem;
  color: var(--clr-amber-600);
  opacity: 0.6;
}

.hero-image-placeholder::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.3), transparent 70%);
  top: -40px;
  right: -40px;
}

/* --- Section Common --- */
.section {
  padding: 5rem 1.5rem;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.section-label {
  display: inline-block;
  background: var(--clr-amber-100);
  color: var(--clr-amber-700);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-stone-800);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--clr-stone-500);
  line-height: 1.7;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* --- Features Section --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-2xl);
  padding: 2.25rem 2rem;
  border: 1px solid rgba(217, 119, 6, 0.08);
  box-shadow: var(--shadow-warm-sm);
  transition: all var(--transition-spring);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-amber-500), var(--clr-amber-400), var(--clr-amber-300));
  border-radius: 4px 4px 0 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-warm-lg);
  border-color: rgba(217, 119, 6, 0.15);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: var(--clr-amber-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  color: var(--clr-amber-600);
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  background: var(--clr-amber-100);
  transform: scale(1.08);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-stone-800);
  margin-bottom: 0.6rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--clr-stone-500);
  line-height: 1.7;
}

/* --- Stats Section --- */
.stats-section {
  background: linear-gradient(135deg, var(--clr-amber-600), var(--clr-amber-700));
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent 70%);
  top: -80px;
  left: -60px;
}

.stats-section::after {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.06), transparent 70%);
  bottom: -60px;
  right: -40px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 1.5rem;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.85;
  font-weight: 500;
}

/* --- Testimonials Section --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.testimonial-card {
  background: #fff;
  border-radius: var(--radius-2xl);
  padding: 2rem;
  border: 1px solid rgba(217, 119, 6, 0.08);
  box-shadow: var(--shadow-warm-sm);
  transition: all var(--transition-spring);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-warm-lg);
}

.testimonial-stars {
  color: var(--clr-amber-500);
  font-size: 1rem;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.98rem;
  color: var(--clr-stone-600);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-amber-300), var(--clr-amber-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.testimonial-name {
  font-weight: 600;
  color: var(--clr-stone-800);
  font-size: 0.95rem;
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--clr-stone-400);
}

/* --- FAQ Section --- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(217, 119, 6, 0.08);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-warm-sm);
}

.faq-item:hover {
  border-color: rgba(217, 119, 6, 0.15);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--clr-stone-700);
  text-align: left;
  transition: color var(--transition-base);
  gap: 1rem;
}

.faq-question:hover {
  color: var(--clr-amber-700);
}

.faq-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--clr-amber-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-amber-600);
  font-size: 0.8rem;
  transition: all var(--transition-base);
}

.faq-item.active .faq-icon {
  background: var(--clr-amber-600);
  color: #fff;
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--clr-stone-500);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-card {
  background: linear-gradient(135deg, var(--clr-amber-600), var(--clr-amber-700), var(--clr-amber-800));
  border-radius: var(--radius-3xl);
  padding: 4rem 2rem;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-warm-xl);
}

.cta-card::before {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 70%);
  top: -80px;
  right: -40px;
}

.cta-card::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.06), transparent 70%);
  bottom: -50px;
  left: -30px;
}

.cta-card h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.cta-card p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.cta-card .btn {
  position: relative;
  z-index: 1;
}

.cta-card .btn-primary {
  background: #fff;
  color: var(--clr-amber-700);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
  font-size: 1.1rem;
  padding: 1rem 2.5rem;
}

.cta-card .btn-primary:hover {
  background: #fef9f0;
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}

/* --- Footer --- */
.footer {
  background: var(--clr-stone-800);
  color: var(--clr-stone-300);
  padding: 3rem 1.5rem 2rem;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
}

.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-col p,
.footer-col a {
  font-size: 0.9rem;
  color: var(--clr-stone-400);
  line-height: 1.8;
  text-decoration: none;
  display: block;
}

.footer-col a:hover {
  color: var(--clr-amber-400);
}

.footer-divider {
  max-width: 1200px;
  margin: 0 auto 1.5rem;
  border: none;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  font-size: 0.85rem;
  color: var(--clr-stone-500);
}

/* --- Scroll-to-Top Button --- */
.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-amber-600);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: var(--shadow-warm-lg);
  z-index: 900;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all var(--transition-spring);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top-btn:hover {
  background: var(--clr-amber-700);
  transform: translateY(-4px);
  box-shadow: var(--shadow-warm-xl);
}

/* --- Fade-in Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 5rem;
  }

  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .hero-image-placeholder {
    max-width: 300px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-card {
    padding: 2.5rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 3rem 1rem;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }

  .stat-number {
    font-size: 2rem;
  }
}