:root {
  /* Warm Rice Theme Colors */
  --bg-page: #FCFAF8; /* 米汤白 */
  --bg-card: #FFFFFF;
  --primary: #F59E0B; /* 熟透的稻穗黄/橘黄 */
  --primary-hover: #D97706;
  --accent: #EA580C; /* 稍微深一点的热气橙 */
  --text-main: #27272A; /* 深碳灰，保证阅读清晰 */
  --text-muted: #71717A;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(245, 158, 11, 0.15);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 15px -3px rgba(245, 158, 11, 0.1), 0 4px 6px -2px rgba(245, 158, 11, 0.05);
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  /* Warm gradient mesh background */
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(245, 158, 11, 0.08), transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(234, 88, 12, 0.08), transparent 40%);
  background-attachment: fixed;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Glassmorphism utility for Light Theme */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
header {
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(to right, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-menu {
  display: flex;
  gap: 30px;
}
.nav-menu a {
  font-weight: 600;
  color: var(--text-main);
  position: relative;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary);
  transition: width 0.3s ease;
}
.nav-menu a:hover::after {
  width: 100%;
}
.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white !important;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 25px -5px rgba(234, 88, 12, 0.4);
}

/* Hero Section (Left-Right Grid) */
.hero {
  padding: 80px 0 60px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.hero-content h1 {
  font-size: 3.8rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-main);
}
.hero-content p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 500px;
}
.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  padding: 16px 40px;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 25px -5px rgba(234, 88, 12, 0.4);
}
.btn-secondary {
  display: inline-block;
  background: var(--bg-card);
  color: var(--primary);
  padding: 16px 40px;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 12px;
  border: 2px solid var(--primary);
  transition: all 0.3s ease;
}
.btn-secondary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px);
}

/* Hero Visual (Steam Animation) */
.hero-visual {
  position: relative;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.rice-bowl-mockup {
  width: 200px;
  height: 100px;
  background: white;
  border-radius: 0 0 100px 100px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 2;
  border: 4px solid var(--primary);
  border-top: none;
  display: flex;
  justify-content: center;
}
.rice-bowl-mockup::before {
  content: "大米";
  position: absolute;
  top: 30px;
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--primary);
}
.rice-mound {
  position: absolute;
  top: -40px;
  width: 180px;
  height: 80px;
  background: white;
  border-radius: 90px 90px 0 0;
  border: 4px solid var(--primary);
  border-bottom: none;
}
.steam-container {
  position: absolute;
  top: -150px;
  width: 100%;
  height: 200px;
  z-index: 1;
}
.steam {
  position: absolute;
  bottom: 0;
  background: #FFF;
  border-radius: 50%;
  filter: blur(8px);
  opacity: 0;
  animation: float-up 3s infinite ease-in;
}
.steam:nth-child(1) { width: 40px; height: 40px; left: 20%; animation-delay: 0s; }
.steam:nth-child(2) { width: 50px; height: 50px; left: 50%; animation-delay: 0.5s; animation-duration: 4s;}
.steam:nth-child(3) { width: 30px; height: 30px; left: 70%; animation-delay: 1.2s; }
.steam:nth-child(4) { width: 60px; height: 60px; left: 35%; animation-delay: 2s; animation-duration: 3.5s;}

@keyframes float-up {
  0% { transform: translateY(0) scale(1); opacity: 0.8; }
  100% { transform: translateY(-150px) scale(2.5); opacity: 0; }
}
.speed-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.9);
  padding: 15px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  font-weight: 700;
  z-index: 3;
  border-left: 4px solid var(--primary);
  animation: float-card 4s infinite ease-in-out alternate;
}
.sc-1 { top: 20px; left: -20px; animation-delay: 0s; }
.sc-2 { bottom: 50px; right: -40px; animation-delay: 1s; border-left-color: var(--accent); }

@keyframes float-card {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-15px); }
}

/* Features */
.features {
  padding: 80px 0;
}
.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 50px;
  color: var(--text-main);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.card {
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.3s ease;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}
.card p {
  color: var(--text-muted);
}

/* Streaming & AI */
.unlock-section {
  padding: 80px 0;
  text-align: center;
}
.tags-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 40px;
}
.tag {
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 600;
  letter-spacing: 1px;
  background: white;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s;
}
.tag:hover {
  transform: scale(1.05);
}

/* Pricing */
.pricing {
  padding: 80px 0;
}
.pricing-card {
  padding: 40px;
  display: flex;
  flex-direction: column;
  position: relative;
  background: white;
}
.pricing-card.popular {
  border: 2px solid var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}
.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(to right, var(--primary), var(--accent));
  color: white;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
}
.price {
  font-size: 3rem;
  font-weight: 800;
  margin: 20px 0;
  color: var(--primary);
}
.price span {
  font-size: 1rem;
  color: var(--text-muted);
}
.features-list {
  list-style: none;
  margin: 30px 0;
  flex-grow: 1;
}
.features-list li {
  margin-bottom: 15px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  font-weight: 500;
}
.features-list li::before {
  content: "✓";
  color: var(--accent);
  margin-right: 10px;
  font-weight: bold;
}
.btn-buy {
  text-align: center;
  padding: 15px;
  border-radius: 12px;
  background: rgba(245, 158, 11, 0.1);
  color: var(--primary);
  font-weight: 700;
  border: 1px solid var(--primary);
}
.pricing-card.popular .btn-buy {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border: none;
}
.btn-buy:hover {
  background: var(--primary);
  color: white;
}

/* Blog Section */
.blog-section {
  padding: 80px 0;
}
.blog-card {
  padding: 30px;
  display: flex;
  flex-direction: column;
  background: white;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.blog-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--text-main);
  line-height: 1.4;
}
.blog-card p {
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}
.read-more {
  color: var(--accent);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}
.read-more:hover {
  color: var(--primary-hover);
}
.read-more::after {
  content: "→";
  margin-left: 5px;
  transition: margin-left 0.3s;
}
.read-more:hover::after {
  margin-left: 10px;
}

/* Testimonials */
.testimonials {
  padding: 80px 0;
}
.review-card {
  padding: 30px;
  text-align: left;
  background: white;
}
.review-text {
  font-style: italic;
  margin-bottom: 20px;
  color: var(--text-muted);
}
.reviewer {
  font-weight: 700;
  color: var(--primary);
}

/* FAQ */
.faq {
  padding: 80px 0;
  max-width: 800px;
  margin: 0 auto;
}
details {
  margin-bottom: 15px;
  background: white;
}
summary {
  padding: 20px;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform 0.3s;
}
details[open] summary::after {
  transform: rotate(45deg);
}
.faq-content {
  padding: 0 20px 20px;
  color: var(--text-muted);
}

/* Footer */
footer {
  padding: 60px 0 30px;
  border-top: 1px solid rgba(0,0,0,0.05);
  margin-top: 50px;
  text-align: center;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--text-muted);
}
.footer-links a:hover {
  color: var(--primary);
}

/* Inner Pages Structure */
.page-header {
  padding: 80px 0 40px;
  text-align: center;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  margin-bottom: 40px;
}
.content-section {
  max-width: 800px;
  margin: 0 auto 80px;
  padding: 40px;
  background: white;
}
.content-section h2 {
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--primary);
}
.content-section p, .content-section ul {
  margin-bottom: 20px;
  color: var(--text-muted);
}
.content-section ul {
  padding-left: 20px;
}

/* Responsive */
@media (max-width: 900px) {
  .pricing-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { margin: 0 auto 30px; }
  .hero-actions { justify-content: center; }
  .hero h1 { font-size: 2.8rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .section-title { font-size: 2rem; }
  .nav-menu { display: none; /* Hide on mobile for simplicity, or implement hamburger */ }
  .nav-container { padding: 15px; }
  .hero { padding: 40px 0; }
  
  /* Make buttons more touch-friendly */
  .btn-primary, .btn-secondary, .btn-buy, .nav-cta, summary {
    padding: 18px; 
  }
  .hero-actions {
    flex-direction: column;
    gap: 15px;
  }
}