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

body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    Helvetica,
    sans-serif;
  background: #0a0a1a;
  color: #fff;
  line-height: 1.5;
  scroll-behavior: smooth;
}

/* background layer with image + dark transparent overlay */
.bg-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-image: url("https://images.unsplash.com/photo-1611162617213-7d7a39e9b1d7?q=80&w=1974&auto=format&fit=crop");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.bg-layer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(2px);
}

/* main container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

/* navigation */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0 20px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, #e0b0ff, #a855f7, #7c3aed);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: #f3e8ff;
  text-decoration: none;
  font-weight: 500;
  transition: 0.25s ease;
  font-size: 1rem;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}

.nav-links a:hover {
  color: #d8b4fe;
  border-bottom-color: #c084fc;
}

/* sections */
section {
  padding: 80px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-title {
  font-size: 2.8rem;
  font-weight: 700;
  background: linear-gradient(130deg, #e9d5ff, #c084fc, #a855f7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
  display: inline-block;
}

/* banner (hero) */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
}

.hero-content {
  flex: 1.2;
}

.hero-badge {
  background: rgba(139, 92, 246, 0.25);
  backdrop-filter: blur(4px);
  display: inline-block;
  padding: 6px 14px;
  border-radius: 40px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #e9d5ff;
  margin-bottom: 20px;
  border: 1px solid rgba(167, 139, 250, 0.5);
}

.hero h1 {
  font-size: 3.8rem;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 24px;
}

.hero h1 span {
  background: linear-gradient(145deg, #ffffff, #d8b4fe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  color: #e2e8ff;
  max-width: 90%;
  margin-bottom: 32px;
  opacity: 0.9;
}

.hero-mock {
  flex: 0.9;
  display: flex;
  justify-content: center;
}

.mock-img {
  max-width: 280px;
  width: 100%;
  border-radius: 42px;
  box-shadow:
    0 30px 40px -20px rgba(0, 0, 0, 0.6),
    0 0 0 6px rgba(168, 85, 247, 0.2);
  transition: transform 0.3s ease;
}

.mock-img:hover {
  transform: scale(1.02);
}

/* intro & features blocks (分段分散布局) */
.split-layout {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.feature-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px;
  background: rgba(20, 10, 40, 0.5);
  backdrop-filter: blur(8px);
  border-radius: 48px;
  padding: 32px 36px;
  border: 1px solid rgba(167, 139, 250, 0.25);
  transition: all 0.3s;
}

.feature-card.reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
}

.feature-text h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(to right, #f0e6ff, #c084fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.feature-text p {
  font-size: 1.05rem;
  color: #ddd9ff;
  line-height: 1.5;
  margin-bottom: 12px;
}

.feature-img {
  flex: 0.6;
  display: flex;
  justify-content: center;
}

.feature-img img {
  max-width: 260px;
  width: 100%;
  border-radius: 36px;
  box-shadow: 0 20px 35px -12px black;
  border: 1px solid rgba(255, 255, 240, 0.2);
}

/* screenshot gallery row (optional) */
.screenshot-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
  margin-top: 30px;
}

.screenshot-item {
  flex: 1;
  min-width: 200px;
  max-width: 240px;
  transition: all 0.25s;
}

.screenshot-item img {
  width: 100%;
  border-radius: 38px;
  box-shadow: 0 25px 35px -12px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(192, 132, 252, 0.5);
  transition: transform 0.2s;
}

.screenshot-item img:hover {
  transform: translateY(-6px);
}

/* emotion / community highlight block */
.community-highlight {
  background: linear-gradient(
    115deg,
    rgba(88, 28, 135, 0.4),
    rgba(30, 10, 60, 0.6)
  );
  border-radius: 60px;
  padding: 48px 40px;
  margin-top: 20px;
  text-align: center;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(167, 139, 250, 0.5);
}

.community-highlight h3 {
  font-size: 2rem;
  margin-bottom: 22px;
}

.community-highlight p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: #e9d5ff;
}

/* footer */
footer {
  padding: 48px 0 40px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.footer-nav a {
  color: #c4b5fd;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: white;
}

.contact-info {
  margin-bottom: 20px;
  font-size: 1rem;
}

.contact-info a {
  color: #e9d5ff;
  text-decoration: none;
  border-bottom: 1px dashed #a855f7;
}

.copyright {
  font-size: 0.8rem;
  color: #a0a0c0;
  letter-spacing: 0.3px;
}

/* responsive */
@media (max-width: 900px) {
  .container {
    padding: 0 24px;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
  .hero-desc {
    max-width: 100%;
  }
  .feature-card,
  .feature-card.reverse {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }
  .section-title {
    font-size: 2.2rem;
  }
  .navbar {
    flex-direction: column;
    gap: 16px;
  }
  .nav-links {
    gap: 1.2rem;
  }
  .hero {
    flex-direction: column;
    text-align: center;
  }
  .hero-content {
    text-align: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 2rem;
  }
  .feature-text h3 {
    font-size: 1.8rem;
  }
  .screenshot-item {
    max-width: 180px;
  }
  .community-highlight {
    padding: 32px 20px;
  }
}