/* 通用样式 */
body {
  margin: 0;
  font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: #f7f9fa;
  color: #222;
  min-height: 100vh;
}

/* 顶部导航 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px 0 32px;
  background: transparent;
}

.logo {
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: 2px;
}

.navbar nav a {
  color: #b2fce4;
  margin-left: 32px;
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s;
}
.navbar nav a:hover {
  color: #fff;
}

/* 主视觉区 */
.hero {
  text-align: center;
  padding: 80px 16px 40px 16px;
  position: relative;
  overflow: hidden;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 12px;
  letter-spacing: 6px;
}

.subtitle {
  font-size: 1.5rem;
  color: #b2fce4;
  margin-bottom: 16px;
}

.slogan {
  font-size: 1.1rem;
  color: #b2fce4;
  margin-bottom: 32px;
}

/* 波浪线条 */
.waves {
  width: 100%;
  height: 80px;
  background: url('data:image/svg+xml;utf8,<svg width="100%" height="80" viewBox="0 0 375 80" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M0 40 Q 62.5 80 125 40 T 250 40 T 375 40 V80 H0Z" fill="rgba(178,252,228,0.08)"/></svg>') repeat-x;
  position: absolute;
  left: 0;
  bottom: 0;
}

/* 产品理念区 */
.philosophy {
  max-width: 600px;
  margin: 60px auto 0 auto;
  text-align: center;
  padding: 0 16px;
}
.philosophy h2 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: #b2fce4;
}
.philosophy p {
  font-size: 1.1rem;
  line-height: 2;
}

/* 核心功能区 */
.features {
  max-width: 900px;
  margin: 60px auto 0 auto;
  text-align: center;
  padding: 0 16px;
}
.features h2 {
  font-size: 2rem;
  margin-bottom: 32px;
  color: #b2fce4;
}
.feature-list {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.feature-item {
  background: rgba(178,252,228,0.08);
  border-radius: 50%;
  width: 160px;
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  box-shadow: 0 2px 16px 0 rgba(0,0,0,0.08);
}
.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  background-size: contain;
  background-repeat: no-repeat;
}
.feature-icon.focus {
  background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" fill="none" xmlns="http://www.w3.org/2000/svg"><rect x="12" y="12" width="24" height="24" rx="6" fill="%23b2fce4"/></svg>');
}
.feature-icon.sleep {
  background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M24 36c6.627 0 12-5.373 12-12S30.627 12 24 12" stroke="%23b2fce4" stroke-width="4" stroke-linecap="round"/></svg>');
}
.feature-icon.meditate {
  background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="24" cy="24" r="12" stroke="%23b2fce4" stroke-width="4"/><path d="M12 36c4-4 20-4 24 0" stroke="%23b2fce4" stroke-width="4" stroke-linecap="round"/></svg>');
}
.feature-title {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 6px;
}
.feature-desc {
  font-size: 1rem;
  color: #b2fce4;
}

/* 下载区 */
.download {
  text-align: center;
  margin: 60px 0 0 0;
  padding: 0 16px;
}
.download h2 {
  font-size: 2rem;
  color: #b2fce4;
  margin-bottom: 16px;
}
.download-links {
  margin: 24px 0;
}
.download-btn {
  display: inline-block;
  background: #0a6a6a;
  color: #b2fce4;
  border: 2px solid #b2fce4;
  border-radius: 24px;
  padding: 12px 32px;
  font-size: 1.1rem;
  margin: 0 12px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.download-btn:hover {
  background: #b2fce4;
  color: #0a6a6a;
}
.qrcode {
  width: 120px;
  margin-top: 16px;
}

/* 底部 */
.footer {
  text-align: center;
  color: #b2fce4;
  font-size: 0.95rem;
  margin: 60px 0 24px 0;
  line-height: 2;
}

/* 响应式 */
@media (max-width: 800px) {
  .feature-list {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }
  .navbar nav a {
    margin-left: 0;
    margin-right: 16px;
  }
}

.brand-header {
  background: linear-gradient(160deg, #0a6a6a 0%, #0e4d4d 100%);
  color: #fff;
  padding: 64px 16px 32px 16px;
  text-align: center;
  border-radius: 0 0 24px 24px;
}
.brand-title {
  font-size: 2.4rem;
  font-weight: bold;
  margin-bottom: 8px;
  letter-spacing: 2px;
}
.brand-slogan {
  font-size: 1.2rem;
  color: #b2fce4;
  margin-bottom: 24px;
}
.breath-animation {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 40px auto 32px auto;
}
.breath {
  position: absolute;
  left: 0; top: 0; right: 0; bottom: 0;
  border-radius: 50%;
  margin: auto;
  animation: breath 3.5s infinite alternate ease-in-out;
}
.breath1 {
  background: rgba(178,252,228,0.12);
  box-shadow: 0 0 60px 40px rgba(178,252,228,0.35), 0 0 120px 60px rgba(178,252,228,0.18);
  width: 220px; height: 220px;
  z-index: 1;
  animation-delay: 0s;
}
.breath2 {
  background: rgba(178,252,228,0.18);
  box-shadow: 0 0 40px 20px rgba(178,252,228,0.35), 0 0 80px 30px rgba(178,252,228,0.15);
  width: 160px; height: 160px;
  z-index: 2;
  left: 30px; top: 30px; right: 30px; bottom: 30px;
  animation-delay: 0.5s;
}
.breath3 {
  background: rgba(255,255,255,0.35);
  box-shadow: 0 0 40px 20px rgba(255,255,255,0.35), 0 0 80px 30px rgba(178,252,228,0.13);
  width: 100px; height: 100px;
  z-index: 3;
  left: 60px; top: 60px; right: 60px; bottom: 60px;
  animation-delay: 1s;
}
@keyframes breath {
  0% { transform: scale(1); }
  100% { transform: scale(1.18); }
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: 999px;
  font-size: 1.1rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px 0 rgba(10,106,106,0.08);
}
.btn-main {
  background: #b2fce4;
  color: #0a6a6a;
  border: 2px solid #b2fce4;
}
.btn-main:hover {
  background: #0a6a6a;
  color: #b2fce4;
}
.btn-green {
  background: #0e4d4d;
  color: #b2fce4;
  border: 2px solid #b2fce4;
}
.btn-green:hover {
  background: #b2fce4;
  color: #0e4d4d;
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 16px 0 16px;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 4px 32px 0 rgba(10,106,106,0.08);
}
.section {
  margin-bottom: 56px;
}
.section-declare h2 {
  font-size: 1.6rem;
  font-weight: bold;
  margin-bottom: 16px;
  color: #222;
}
.section-declare p {
  font-size: 1.05rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}
.section-features h3,
.section-testimonials h3,
.section-download h3 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 32px;
  text-align: center;
  color: #222;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.card {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 20px 0 rgba(10,106,106,0.08);
  padding: 36px 28px;
  transition: all 0.3s ease;
  color: #222;
  border: 1px solid #f0f4f7;
  position: relative;
  overflow: hidden;
}
.card:hover {
  box-shadow: 0 8px 32px 0 rgba(10,106,106,0.15);
  transform: translateY(-4px);
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #0a6a6a, #b2fce4);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover::before {
  opacity: 1;
}
.feature-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
  display: block;
  text-align: center;
}
.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #0a6a6a;
  text-align: center;
}
.feature-subtitle {
  font-size: 1rem;
  color: #b2fce4;
  font-weight: 500;
  margin-bottom: 20px;
  text-align: center;
  font-style: italic;
  background: linear-gradient(135deg, #0a6a6a, #0e4d4d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.feature-desc {
  color: #555;
  font-size: 0.95rem;
  line-height: 1.6;
  text-align: left;
}
.feature-desc p {
  margin-bottom: 12px;
}
.feature-desc p:last-child {
  margin-bottom: 0;
}
.section-video {
  text-align: center;
}
.video-demo h3 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 24px;
  color: #222;
}
.video-container {
  position: relative;
  width: 70%;
  max-width: 560px;
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 32px 0 rgba(10,106,106,0.15);
  background: #000;
}
.video-container video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
}
.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  border-radius: 18px;
}
.video-container:hover .video-overlay {
  opacity: 1;
}
.play-button {
  transform: scale(0.8);
  transition: transform 0.3s ease;
}
.video-container:hover .play-button {
  transform: scale(1);
}
.play-button svg {
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}
.video-description {
  margin-top: 20px;
  color: #666;
  font-size: 1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.section-testimonials h3 {
  margin-bottom: 32px;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 700px) {
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.testimonial-card blockquote {
  font-size: 1.05rem;
  color: #0a6a6a;
  font-style: italic;
  margin-bottom: 16px;
}
.testimonial-author {
  text-align: right;
  color: #888;
  font-size: 0.98rem;
}
.section-download {
  background: #f7f9fa;
  border-radius: 18px;
  padding: 40px 16px;
  text-align: center;
  border: 1px solid #e0e6e8;
}
.section-download p {
  color: #666;
  font-size: 1.05rem;
  margin-bottom: 32px;
}
.download-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}
.footer {
  background: linear-gradient(160deg, #0a6a6a 0%, #0e4d4d 100%);
  color: #b2fce4;
  padding: 32px 16px 16px 16px;
  text-align: center;
  font-size: 1rem;
  margin-top: 64px;
  border-radius: 24px 24px 0 0;
}
.footer-links {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  gap: 32px;
}
.footer-links a {
  color: #b2fce4;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #fff;
}
@media (max-width: 600px) {
  .main-content {
    padding: 16px 4px 0 4px;
    border-radius: 0;
    box-shadow: none;
  }
  .card {
    padding: 24px 16px;
    border-radius: 16px;
  }
  .features-grid {
    gap: 24px;
  }
  .feature-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
  }
  .feature-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }
  .feature-subtitle {
    font-size: 0.9rem;
    margin-bottom: 16px;
  }
  .feature-desc {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  .feature-desc p {
    margin-bottom: 10px;
  }
  .brand-header {
    padding: 40px 4px 20px 4px;
    border-radius: 0 0 16px 16px;
  }
  .section-download {
    padding: 24px 4px;
    border-radius: 10px;
  }
  .footer {
    border-radius: 16px 16px 0 0;
  }
}