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

body {
  font-family: Inter, Arial, sans-serif;
  background: #f8fafc;
  color: #1f2937;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: "Playfair Display", serif;
}

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

/* ===== Header ===== */
header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}

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

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}

.nav ul li a {
  padding: 6px 10px;
  transition: 0.3s;
}

.nav ul li a.active {
  border-bottom: 2px solid #d4af37;
}

/* ===== Hero / CTA 渐变 ===== */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  padding: 60px 0;

  background: linear-gradient(135deg, #1f2937, #bfa46f);
  color: #ffffff;
  border-radius: 12px;
}

.hero img {
  width: 100%;
  border-radius: 10px;
}

/* ===== Section ===== */
.section {
  padding: 60px 0;
}

/* ===== Grid ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

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

/* ===== Card ===== */
.card {
  background: #ffffff;
  padding: 20px;
  border-radius: 10px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* ===== 按钮渐变（重点） ===== */
.btn {
  display: inline-block;
  padding: 12px 24px;
  background: linear-gradient(135deg, #d4af37, #b8962e);
  color: #fff;
  border-radius: 6px;
  font-weight: 500;
  transition: 0.3s;
}

.btn:hover {
  background: linear-gradient(135deg, #b8962e, #8c6f1f);
}

/* ===== Footer 渐变（高级感） ===== */
footer {
  background: linear-gradient(135deg, #000000, #1f2937);
  color: #cbd5e1;
  padding: 50px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 30px;
}

footer h3 {
  color: #ffffff;
}

footer a {
  color: #cbd5e1;
  transition: 0.3s;
}

footer a:hover {
  color: #d4af37;
}

/* ===== Footer Bottom ===== */
.footer-bottom {
  margin-top: 20px;
  font-size: 14px;
  border-top: 1px solid #334155;
  padding-top: 15px;
}

/* ===== 图片 ===== */
img {
  max-width: 100%;
  height: auto;
  display: block;
  background: #ddd;
}

/* ===== Mobile ===== */
@media(max-width: 768px) {

  .nav ul {
    display: none;
    flex-direction: column;
  }

  .nav ul.show {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .hero,
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}