/* ========================================
   EnMirth 彩元泰 - 全局样式
   ======================================== */

/* --- CSS Variables --- */
:root {
  /* 五色主题色 */
  --color-green: #4CAF50;
  --color-green-light: #E8F5E9;
  --color-red: #F44336;
  --color-red-light: #FFEBEE;
  --color-yellow: #FF9800;
  --color-yellow-light: #FFF8E1;
  --color-white: #F5F5F5;
  --color-white-light: #FAFAFA;
  --color-purple: #9C27B0;
  --color-purple-light: #F3E5F5;

  /* 中性色 */
  --color-text: #1a1a1a;
  --color-text-secondary: #666;
  --color-bg: #ffffff;
  --color-bg-warm: #FFFBF0;
  --color-border: #e0e0e0;

  /* 字体 */
  --font-sans: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif SC', serif;

  /* 间距 */
  --section-padding: 80px 0;
  --container-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

/* ========================================
   Header / Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-green), var(--color-yellow), var(--color-red));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
}

.logo span.en {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.3s;
  position: relative;
}

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

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-green);
  border-radius: 1px;
}

/* 购买按钮 */
.btn-buy {
  background: var(--color-green);
  color: white !important;
  padding: 10px 24px;
  border-radius: 24px;
  font-weight: 600;
  transition: background 0.3s, transform 0.2s !important;
}

.btn-buy:hover {
  background: #43A047;
  transform: translateY(-1px);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f0fdf4 0%, #fffbeb 50%, #fce7f3 100%);
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(76, 175, 80, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 24px;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-green), var(--color-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-green);
  color: white;
  padding: 14px 32px;
  border-radius: 28px;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.3s, transform 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: #43A047;
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  color: var(--color-text);
  padding: 14px 32px;
  border-radius: 28px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  transition: border-color 0.3s, transform 0.2s;
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--color-green);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-product-img {
  width: 100%;
  max-width: 480px;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

/* 五色圆点装饰 */
.color-dots {
  position: absolute;
  display: flex;
  gap: 8px;
}

.color-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  animation: float 3s ease-in-out infinite;
}

.color-dot:nth-child(1) { background: var(--color-green); animation-delay: 0s; }
.color-dot:nth-child(2) { background: var(--color-red); animation-delay: 0.5s; }
.color-dot:nth-child(3) { background: var(--color-yellow); animation-delay: 1s; }
.color-dot:nth-child(4) { background: #E0E0E0; animation-delay: 1.5s; }
.color-dot:nth-child(5) { background: var(--color-purple); animation-delay: 2s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ========================================
   Features Section (五色优势)
   ======================================== */
.features {
  padding: var(--section-padding);
  background: var(--color-bg-warm);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.feature-card {
  background: white;
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--color-border);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========================================
   Products Section (产品展示)
   ======================================== */
.products {
  padding: var(--section-padding);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.1);
}

.product-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-green-light), var(--color-yellow-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.product-info {
  padding: 24px;
}

.product-info h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.product-info .price {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-green);
  margin-bottom: 16px;
}

.product-info .price .original {
  font-size: 0.9rem;
  color: #999;
  text-decoration: line-through;
  font-weight: 400;
  margin-left: 8px;
}

/* ========================================
   Ingredients Section (五色成分)
   ======================================== */
.ingredients {
  padding: var(--section-padding);
  background: #FAFAFA;
}

.color-section {
  margin-bottom: 64px;
}

.color-section:last-child {
  margin-bottom: 0;
}

.color-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.color-header .icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.color-header h3 {
  font-size: 1.5rem;
}

.color-header p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.veggie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.veggie-card {
  background: white;
  border-radius: 12px;
  padding: 20px 16px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform 0.2s;
}

.veggie-card:hover {
  transform: translateY(-2px);
}

.veggie-card .emoji {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.veggie-card h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.veggie-card .nutrition {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ========================================
   About Section (关于我们)
   ======================================== */
.about {
  padding: var(--section-padding);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.credential-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-green-light);
  color: var(--color-green);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.about-image {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.1);
}

/* ========================================
   Contact Section (联系我们)
   ======================================== */
.contact {
  padding: var(--section-padding);
  background: var(--color-bg-warm);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: 12px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: border-color 0.3s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-green);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info {
  padding: 20px 0;
}

.contact-info h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item .text strong {
  display: block;
  margin-bottom: 4px;
}

.contact-item .text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: #1a1a1a;
  color: rgba(255,255,255,0.8);
  padding: 60px 0 24px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin: 16px 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
}

.footer h4 {
  color: white;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer ul li {
  margin-bottom: 10px;
}

.footer ul a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: color 0.3s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.social-links a:hover {
  background: var(--color-green);
}

/* ========================================
   WhatsApp Float Button
   ======================================== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform 0.3s;
  cursor: pointer;
  font-size: 1.8rem;
  color: white;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 40px 24px;
  }

  .hero-visual {
    order: -1;
  }

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

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

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

  .about-inner,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}

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

/* ========================================
   Trust Badges (信任证明)
   ======================================== */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: white;
  border: 1px solid var(--color-border);
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.trust-badge .icon {
  font-size: 1.2rem;
}

/* ========================================
   FAQ
   ======================================== */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  background: white;
  font-weight: 600;
  transition: background 0.3s;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 0.95rem;
  font-family: var(--font-sans);
}

.faq-question:hover {
  background: #fafafa;
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s, padding 0.3s;
  background: white;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}

/* ========================================
   Page Hero (子页面顶部)
   ======================================== */
.page-hero {
  padding: 140px 0 80px;
  text-align: center;
  background: linear-gradient(135deg, #f0fdf4 0%, #fffbeb 100%);
}

.page-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}