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

body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    sans-serif;
  background: #ffffff;
  color: #1e293b;
  line-height: 1.5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶层导航 - 色系变更为蓝白 */
.navbar {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.9rem;
  font-weight: 700;
  background: linear-gradient(145deg, #2563eb, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  text-decoration: none;
}

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

.nav-links a {
  text-decoration: none;
  font-weight: 500;
  color: #2c3e50;
  transition: color 0.2s;
  font-size: 1.05rem;
}

.nav-links a:hover {
  color: #3b82f6;
}

.nav-download {
  background: linear-gradient(115deg, #2563eb, #60a5fa);
  color: white !important;
  padding: 8px 22px;
  border-radius: 40px;
  font-weight: 600;
  box-shadow: 0 8px 14px -6px #93c5fd;
}

.nav-download:hover {
  background: #3b82f6;
  color: white !important;
}

/* hero 区域 - 新标语 */
.hero-section {
  padding: 30px 50px 20px;
  text-align: center;
  background: linear-gradient(
    340deg,
    #02feca 12%,
    #98ffe0 37%,
    rgb(154, 255, 205) 100%
  );
  /* background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); */
}
.hero-section .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
}
.hero-section .left {
  margin-left: 50px;
}
.hero-section .right {
  flex: 1;
  text-align: left;
  padding: 0 30px;
}

.hero-section h1 {
  color: #4f92f5;
  font-size: 80px;
}

.phone-card {
  width: 303px;
  height: 628px;
  user-select: none;
  pointer-events: none;
  position: relative;
}
/* 倾斜效果 */
.left {
  transition: transform 0.5s ease;
  transform: perspective(1000px) rotateY(10deg) rotate(3deg);
}
.left:hover {
  transform: perspective(1000px) rotateY(0deg) !important;
}
.phone-card .icon-1 {
  width: 125px;
  height: 119px;
  position: absolute;
  top: 326px;
  left: -33px;
}
.phone-card .icon-2 {
  position: absolute;
  right: -51px;
  top: 115px;
  width: 115px;
  height: 115px;
}

.tagline-big {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0.5rem 0 0.25rem;
}

h1 {
  font-size: 3.2rem;
  line-height: 1.1;
  color: #0f172a;
  margin-bottom: 0.25rem;
  font-weight: 600;
}

h2 {
  font-size: 2.4rem;
  margin-bottom: 1.5rem;
  color: #0f172a;
  font-weight: 600;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: #1e293b;
}

.hero-desc {
  font-size: 1.2rem;
  color: #334155;
  max-width: 700px;
  margin: 1.2rem 0 2rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: flex-start;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  background: white;
  color: #1e293b;
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-primary {
  background: linear-gradient(115deg, #2563eb, #60a5fa);
  color: white;
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.5);
  border: none;
}

.btn-primary i {
  color: white;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #bfdbfe;
  box-shadow: none;
}

.btn-outline i {
  color: #3b82f6;
}

.btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 30px -8px rgba(37, 99, 235, 0.25);
}

.btn-outline:hover {
  background: #eff6ff;
  border-color: #60a5fa;
}

/* 特性卡片 - 蓝色调 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.feature-card {
  background: #f8fafc;
  border-radius: 32px;
  padding: 32px 24px;
  box-shadow: 0 25px 40px -20px rgba(37, 99, 235, 0.15);
  border: 1px solid #e2e8f0;
  transition: all 0.2s;
}

.feature-card:hover {
  background: white;
  box-shadow: 0 35px 50px -20px #2563eb40;
}

.feature-icon {
  font-size: 2.4rem;
  color: #2563eb;
  margin-bottom: 1.5rem;
  background: #dbeafe;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
}

/* about 区域 */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin: 40px 0 30px;
}

.about-item {
  background: #f8fafc;
  padding: 28px 18px;
  border-radius: 28px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 10px 18px -10px #bfdbfe;
}

.about-item i {
  font-size: 2rem;
  color: #2563eb;
  background: #dbeafe;
  padding: 14px;
  border-radius: 18px;
  margin-bottom: 20px;
}

.about-item h4 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: #0f172a;
}

.about-item p {
  color: #334155;
  font-size: 0.95rem;
}

.highlight-text {
  font-size: 1.2rem;
  background: #eff6ff;
  padding: 32px 40px;
  border-radius: 50px 50px 50px 0;
  color: #1e3a8a;
  margin: 40px 0 20px;
  border-left: 8px solid #3b82f6;
  font-weight: 500;
}

/* CTA 区域 */
.cta-block {
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  color: white;
  border-radius: 60px;
  padding: 60px 48px;
  text-align: center;
  box-shadow: 0 40px 50px -20px #1e3a8a;
}

.cta-block h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-block .btn-primary {
  background: white;
  color: #1e3a8a;
  box-shadow: 0 15px 25px -8px #0f2b63;
}

.cta-block .btn-primary i {
  color: #1e3a8a;
}

.cta-block .btn-primary:hover {
  background: #f0f9ff;
}

/* footer */
.footer {
  background: #0f172a;
  color: #cbd5e1;
  border-radius: 48px 48px 0 0;
  padding: 56px 32px 32px;
  margin-top: 50px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  align-items: start;
}

.footer h5 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.footer a {
  color: #94a3b8;
  text-decoration: none;
  display: inline-block;
  margin: 0.3rem 0;
}

.footer a:hover {
  color: white;
}

.footer .contact i {
  width: 24px;
  margin-right: 6px;
  color: #60a5fa;
}

/* 法律链接内联样式，带分隔符 */
.legal-links {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.legal-links a {
  margin: 0;
}
.legal-links span {
  color: #475569;
}

.copyright {
  text-align: center;
  padding-top: 50px;
  font-size: 0.9rem;
  color: #64748b;
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, #94a3b8, transparent);
  margin: 30px 0;
}

.divider {
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #93c5fd);
  border-radius: 4px;
  margin: 20px 0 30px 30px;
}

/* 响应式 */
@media (max-width: 700px) {
  h1 {
    font-size: 2.8rem;
  }
  .tagline-big {
    font-size: 2.2rem;
  }
  h2 {
    font-size: 2rem;
  }
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    justify-content: center;
  }
  .cta-block {
    padding: 40px 20px;
    border-radius: 40px;
  }
  .footer-grid {
    gap: 30px;
  }
  .feature-icon {
    width: 50px;
    height: 50px;
    font-size: 2rem;
  }

  .navbar .container {
    flex-direction: column;
    gap: 12px;
  }
  .nav-links {
    justify-content: center;
    gap: 20px;
  }
}

.developer-address {
  font-style: normal;
  line-height: 1.6;
  opacity: 0.9;
  font-size: 0.95rem;
}