/* 基础重置 */
:root {
  --primary-color: #10B981;
  --secondary-color: #059669;
  --accent-color: #FF8A3D;
  --text-color: #0E3D2A;
  --bg-start: #EFFBF4;
  --bg-end: #FAFFFC;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: #C6EBD7;
  --footer-bg: #0E3D2A;
  --footer-text: #FAFFFC;
  --border-color: #C6EBD7;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-color);
  background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
  line-height: 1.6;
  position: relative;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* 按钮通用样式 */
.btn {
  display: inline-block;
  padding: 12px 30px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 25px;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s, transform 0.2s;
  cursor: pointer;
}

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

.btn-large {
  padding: 15px 40px;
  font-size: 1.2rem;
  border-radius: 30px;
}

/* 导航栏 */
.header {
  background-color: var(--card-bg);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
  gap: 25px;
  align-items: center;
}

.nav-menu a {
  font-weight: 500;
  color: #555;
  transition: color 0.3s;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
}

/* 首屏主视觉区 */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: transparent;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.hero p {
  font-size: 1.2rem;
  color: #1A543A;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 通用容器和标题 */
.section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 50px;
  color: var(--text-color);
}

/* 核心优势、流媒体与AI */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.card {
  background-color: var(--card-bg);
  padding: 40px 30px;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.05);
  backdrop-filter: blur(10px);
  text-align: center;
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

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

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.card p {
  color: #666;
}

/* 定价表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.price-card {
  background-color: var(--card-bg);
  padding: 40px 30px;
  border-radius: 18px;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.05);
  backdrop-filter: blur(10px);
  text-align: center;
  border: 1px solid var(--card-border);
}

.price-card.popular {
  border: 2px solid var(--accent-color);
  position: relative;
  transform: scale(1.05);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-color);
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
}

.price-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.price {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.price span {
  font-size: 1rem;
  color: #666;
}

.price-features {
  margin-bottom: 30px;
  text-align: left;
}

.price-features li {
  margin-bottom: 10px;
  padding-left: 25px;
  position: relative;
}

.price-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #20c997;
  font-weight: bold;
}

/* FAQ 常见问题 */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.faq-item {
  background-color: var(--card-bg);
  padding: 25px;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.05);
  backdrop-filter: blur(10px);
}

.faq-item h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #212529;
}

.faq-item p {
  color: #666;
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.review-card {
  background-color: var(--card-bg);
  padding: 30px;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.05);
  backdrop-filter: blur(10px);
}

.review-text {
  font-style: italic;
  margin-bottom: 20px;
  color: #555;
}

.reviewer {
  font-weight: bold;
  color: #212529;
}

/* 页脚 */
.footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 40px 20px 20px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 20px;
}

.footer-links a {
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.copyright {
  color: #888;
  font-size: 0.9rem;
}

/* 内部页面内容区 */
.page-content {
  background-color: var(--card-bg);
  padding: 40px;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.05);
  backdrop-filter: blur(10px);
  margin-bottom: 40px;
}

.page-content h2 {
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-content p {
  margin-bottom: 15px;
}

.page-content ul {
  margin-bottom: 20px;
  padding-left: 20px;
  list-style: disc;
}

/* 响应式媒体查询 */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .grid-3, .grid-2, .pricing-grid, .faq-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .price-card.popular {
    transform: scale(1);
  }
  
  .footer-links {
    flex-direction: column;
    gap: 15px;
  }
  
  .btn {
    display: block;
    width: 100%;
    padding: 15px; /* 适合手指点击 */
  }
}

/* --- ����װ�ζ�Ч�� --- */
.bg-effects {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

/* 3 �ű��������߹�� */
.glow-spot {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  opacity: 0.08;
  filter: blur(40px);
}
.spot-1 { width: 40vw; height: 40vw; top: -10vh; left: -10vw; animation: floatSpot1 30s infinite alternate ease-in-out; }
.spot-2 { width: 50vw; height: 50vw; bottom: -20vh; right: -15vw; animation: floatSpot2 36s infinite alternate ease-in-out; }
.spot-3 { width: 35vw; height: 35vw; top: 40vh; left: 30vw; animation: floatSpot3 42s infinite alternate ease-in-out; }

@keyframes floatSpot1 { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(10vw, 15vh) scale(1.1); } }
@keyframes floatSpot2 { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(-15vw, -10vh) scale(0.9); } }
@keyframes floatSpot3 { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(12vw, -12vh) scale(1.2); } }

/* 3 ����ɫ��ө��� */
.firefly {
  position: absolute;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 10px 3px var(--primary-color);
  bottom: -10px;
  opacity: 0;
}
.ff-1 { left: 20%; animation: fireflyRise 24s infinite ease-in; }
.ff-2 { left: 50%; animation: fireflyRise 28s infinite ease-in 4s; }
.ff-3 { left: 80%; animation: fireflyRise 32s infinite ease-in 8s; }

@keyframes fireflyRise {
  0% { transform: translateY(0) scale(0.5); opacity: 0; }
  20% { opacity: 0.8; }
  80% { opacity: 0.8; }
  100% { transform: translateY(-80vh) scale(1.2); opacity: 0; }
}

/* 4 �� CSS С���ܲ� */
.carrot {
  position: absolute;
  width: 12px;
  height: 30px;
  background: var(--accent-color);
  border-radius: 50px 50px 10px 10px;
  bottom: -40px;
  opacity: 0;
  transform-origin: bottom center;
}
.carrot::after {
  content: '';
  position: absolute;
  top: -12px;
  left: 2px;
  width: 8px;
  height: 15px;
  background: var(--primary-color);
  border-radius: 50px;
  transform: rotate(-15deg);
}
.carrot::before {
  content: '';
  position: absolute;
  top: -12px;
  right: 2px;
  width: 8px;
  height: 15px;
  background: var(--primary-color);
  border-radius: 50px;
  transform: rotate(15deg);
}

.car-1 { left: 15%; animation: carrotRise 24s infinite ease-in; }
.car-2 { left: 35%; animation: carrotRise 26s infinite ease-in 5s; }
.car-3 { left: 65%; animation: carrotRise 29s infinite ease-in 10s; }
.car-4 { left: 85%; animation: carrotRise 32s infinite ease-in 15s; }

@keyframes carrotRise {
  0% { transform: translateY(0) rotate(22deg) scale(0.6); opacity: 0; }
  20% { opacity: 0.6; }
  80% { opacity: 0.6; }
  100% { transform: translateY(-70vh) rotate(22deg) scale(1); opacity: 0; }
}

/* �ײ�һ����ݻԹ� */
.grass-glow {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100vw;
  height: 20vh;
  background: linear-gradient(to top, rgba(16, 185, 129, 0.15) 0%, transparent 100%);
  animation: grassBreathe 12s infinite alternate ease-in-out;
}

@keyframes grassBreathe {
  0% { opacity: 0.4; transform: scaleY(1); }
  100% { opacity: 1; transform: scaleY(1.3); }
}

/* ����������������ɫ������ᴩ���� */
.bouncing-dot {
  position: absolute;
  bottom: 10vh;
  left: -20px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 15px 4px var(--primary-color);
  animation: naughtyBounce 16s infinite linear;
}

@keyframes naughtyBounce {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; transform: translate(10vw, -15vh); }
  20% { transform: translate(20vw, 0); }
  30% { transform: translate(30vw, -10vh); }
  40% { transform: translate(40vw, 0); }
  50% { transform: translate(50vw, -20vh); }
  60% { transform: translate(60vw, 0); }
  70% { transform: translate(70vw, -12vh); }
  80% { transform: translate(80vw, 0); }
  90% { opacity: 1; transform: translate(90vw, -18vh); }
  100% { transform: translate(110vw, 0); opacity: 0; }
}

/* ����֧�� prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .glow-spot, .firefly, .carrot, .grass-glow, .bouncing-dot {
    animation: none !important;
    opacity: 0 !important;
  }
}

/* === Accessibility & Mobile Touch Updates === */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 0 0 10px 10px;
    z-index: 10000;
    transition: top 0.3s;
    text-decoration: none;
    font-weight: bold;
}
.skip-link:focus {
    top: 0;
}
*:focus-visible {
    outline: 3px solid #FF8A3D !important;
    outline-offset: 2px;
}
.section, .hero {
    scroll-margin-top: 80px;
}

/* FAQ Details/Summary styling */
details.faq-item {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px 25px;
    margin-bottom: 15px;
    backdrop-filter: blur(10px);
}
details.faq-item summary {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--text-color);
    cursor: pointer;
    list-style: none;
    padding: 10px 0;
    min-height: 44px;
    display: flex;
    align-items: center;
}
details.faq-item summary::-webkit-details-marker {
    display: none;
}
details.faq-item p {
    margin-top: 15px;
    color: #4B5563;
    line-height: 1.6;
}

/* Touch targets for mobile */
@media (max-width: 768px) {
    .btn, .nav-menu a, .footer-links a, .card {
        min-height: 44px;
    }
}