/* RESET & BASE */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

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

img {
  max-width: 100%;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-large {
  padding: 16px 36px;
  font-size: 18px;
}

.btn-primary {
  background: linear-gradient(135deg, #6e48aa, #9d50bb);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(157, 80, 187, 0.4);
}

.btn-secondary {
  background: #ff6b6b;
  color: white;
}

/* HEADER */
.header {
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo img {
  height: 40px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-list a {
  font-weight: 500;
  transition: color 0.3s;
}

.nav-list a:hover {
  color: #9d50bb;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #333;
  transition: 0.3s;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #2c3e50;
}

.subtitle {
  font-size: 1.2rem;
  color: #555;
  margin-bottom: 30px;
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.trust-badges img {
  height: 40px;
  opacity: 0.8;
}

/* SECTIONS */
.section {
  padding: 80px 0;
}

.section h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: #2c3e50;
}

.bg-light {
  background: #f9fbfd;
}

/* GRID LAYOUTS */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.advantage-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  text-align: center;
  transition: transform 0.3s;
}

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

.icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

/* CASE STUDIES */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.case-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.case-card h3 {
  color: #6e48aa;
  margin-bottom: 15px;
}

.case-img {
  width: 100%;
  margin-top: 20px;
  border-radius: 8px;
}

/* PROCESS STEPS */
.process-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.step {
  background: white;
  padding: 30px 20px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  text-align: center;
  flex: 1;
  min-width: 200px;
  max-width: 250px;
}

.step-number {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: #9d50bb;
  color: white;
  border-radius: 50%;
  line-height: 40px;
  font-weight: bold;
  margin-bottom: 15px;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  padding: 25px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.faq-item h3 {
  color: #2c3e50;
  margin-bottom: 10px;
}

/* OFFER & COUNTDOWN */
.offer-box {
  background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  padding: 40px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(252, 182, 159, 0.3);
}

.countdown {
  font-size: 1.2rem;
  font-weight: bold;
  margin: 20px 0;
  color: #d35400;
}

/* FINAL CTA */
.final-cta {
  background: linear-gradient(135deg, #6e48aa, #9d50bb);
  color: white;
  text-align: center;
  padding: 60px 0;
}

.final-cta h2 {
  color: white;
  margin-bottom: 30px;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.wechat {
  margin-top: 20px;
}

.wechat img {
  width: 180px;
  border-radius: 8px;
}

.trust-seals {
  margin-top: 30px;
  font-size: 0.9rem;
}

.trust-seals span {
  margin: 0 8px;
}

/* FORM */
.form-section {
  background: #f9fbfd;
}

.contact-form {
  max-width: 600px;
  margin: 40px auto 0;
  display: grid;
  gap: 20px;
}

.contact-form input,
.contact-form textarea {
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 16px;
}

.contact-form button {
  justify-self: center;
  margin-top: 10px;
}

/* FOOTER */
.footer {
  background: #2c3e50;
  color: #ecf0f1;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  height: 50px;
  margin-bottom: 20px;
}

.qr-code {
  width: 150px;
  border: 3px solid white;
  border-radius: 8px;
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #34495e;
  font-size: 0.9rem;
}

.copyright a {
  color: #bdc3c7;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-list {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    z-index: 999;
  }

  .nav-list.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .btn-large {
    padding: 14px 24px;
    font-size: 16px;
  }
}


/* 去除ul列表的默认项目符号，margin/padding可选：清除列表默认的缩进 */
ul {
  list-style-type: none;  /* 核心属性：去掉黑点，none表示无项目符号 */
  margin: 0;              /* 清除列表默认的外边距（可选） */
  padding: 0;             /* 清除列表默认的内边距（可选，去掉后列表会左对齐） */
}