/* =========================
   基础重置
   ========================= */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:"PingFang SC","Microsoft YaHei",serif;
}

html{
  scroll-behavior:smooth;
}

body{
  background:#0f0f0f;
  color:#f5f0e6;
  line-height:1.6;
  padding-top:70px; /* 给固定导航留空间 */
}

a{
  text-decoration:none;
}

img{
  display:block;
}

/* =========================
   玻璃拟态导航
   ========================= */
.navbar{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 40px;
  background:rgba(15,15,15,.55);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 8px 30px rgba(0,0,0,.35);
  z-index:999;
  transition:all .35s ease;
}

/* 滚动缩小 */
.navbar.small{
  padding:10px 40px;
  background:rgba(15,15,15,.75);
}

/* Logo */
.logo{
  font-size:22px;
  color:#f5d08a;
  white-space:nowrap;
  letter-spacing:.15em;
}

/* 导航容器 */
nav{
  display:flex;
  flex-wrap:nowrap;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
}
nav::-webkit-scrollbar{
  display:none;
}

/* 导航链接 */
nav a{
  color:#e6d8b5;
  font-size:15px;
  padding:8px 14px;
  border-radius:8px;
  white-space:nowrap;
  transition:.3s;
}

nav a:hover{
  background:rgba(245,208,138,.2);
}

/* ✅ 当前页面高亮 */
nav a.active{
  background:rgba(245,208,138,.35);
  color:#fff;
  font-weight:600;
}

/* =========================
   主视觉区域
   ========================= */
.hero{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:40px 20px;
}

/* 3D 玉石 */
.scene{
  perspective:900px;
}

.jade-3d{
  width:220px;
  height:220px;
  animation:jadeRotate 12s linear infinite;
  transform-style:preserve-3d;
  border-radius:50%;
  overflow:hidden;
  box-shadow:
    0 0 40px rgba(245,208,138,.4),
    inset 0 0 40px rgba(0,0,0,.6);
}

.jade-3d img{
  width:100%;
  height:100%;
  object-fit:cover;
}

@keyframes jadeRotate{
  from{transform:rotateY(0);}
  to{transform:rotateY(360deg);}
}

/* 主标题 */
.hero-text h1{
  font-size:48px;
  color:#f5d08a;
  margin-top:30px;
}

.hero-text p{
  font-size:18px;
  margin:16px 0 32px;
}

/* 按钮 */
.btn{
  padding:14px 36px;
  border:1px solid #f5d08a;
  color:#f5d08a;
  border-radius:30px;
  transition:.3s;
}

.btn:hover{
  background:#f5d08a;
  color:#000;
}

/* =========================
   产品展示
   ========================= */
.products{
  padding:100px 40px;
  text-align:center;
}

.products h2{
  font-size:32px;
  color:#f5d08a;
  margin-bottom:50px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:30px;
}

.card{
  background:#1a1a1a;
  border-radius:14px;
  overflow:hidden;
  transition:.4s;
}

.card:hover{
  transform:translateY(-8px);
}

.card img{
  width:100%;
  height:220px;
  object-fit:cover;
}

.card h3{
  padding:16px;
  font-size:18px;
}

.card p{
  padding-bottom:16px;
  font-size:14px;
  color:#aaa;
}

/* =========================
   联系栏
   ========================= */
.contact-bar{
  text-align:center;
  padding:50px 20px;
  background:#121212;
}

.call-btn,
.wechat-btn{
  padding:14px 28px;
  margin:10px;
  font-size:15px;
  border-radius:30px;
  border:none;
  cursor:pointer;
}

.call-btn{
  background:#f5d08a;
  color:#000;
}

.wechat-btn{
  background:transparent;
  border:1px solid #f5d08a;
  color:#f5d08a;
}

.wx-tip{
  margin-top:10px;
  font-size:13px;
  color:#888;
}

/* =========================
   页面通用
   ========================= */
.page{
  padding:160px 40px;
  text-align:center;
}

/* =========================
   页脚备案
   ========================= */
.footer{
  text-align:center;
  padding:24px;
  font-size:13px;
  color:#888;
  background:#111;
}

.footer a{
  color:#888;
  text-decoration:none;
}

/* =========================
   响应式 & 防误触
   ========================= */
@media(max-width:768px){

  .navbar{
    padding:12px 16px;
  }

  .logo{
    font-size:17px;
  }

  nav a{
    font-size:13px;
    padding:6px 10px;
  }

  .hero-text h1{
    font-size:32px;
  }

  .btn,
  .call-btn,
  .wechat-btn{
    padding:16px 28px;
    font-size:16px;
  }

  .jade-3d{
    width:160px;
    height:160px;
  }
}