* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --ivory: #faf8f5;
    --white: #ffffff;
    --text-dark: #2c2c2c;
    --text-gray: #707070;
    --border-light: #e2ddd4;
    --champagne-gold: #b89668;
}
body {
    background-color: var(--ivory);
    color: var(--text-dark);
    font-family: 'Inter', Arial, sans-serif;
    line-height: 1.7;
}
h1,h2,h3,h4 {
    font-family: 'Playfair Display', serif;
    font-weight: 500;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========= 横向导航 ========= */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 24px;
    background-color: var(--white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top:0;
    z-index: 99;
}
.logo {
    font-family: 'Playfair Display', serif;
    font-size: 30px;
    letter-spacing: 3px;
    color: var(--text-dark);
    text-decoration: none;
}
.nav-menu {
    display: flex;
    gap:44px;
    align-items: center;
}
.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-size:15px;
    letter-spacing:0.5px;
    position:relative;
    transition: color 0.28s ease;
}
.nav-menu a::after {
    content:"";
    position:absolute;
    left:0;
    bottom:-5px;
    width:0;
    height:1px;
    background:var(--champagne-gold);
    transition: width 0.3s ease;
}
.nav-menu a:hover {
    color:var(--champagne-gold);
}
.nav-menu a:hover::after {
    width:100%;
}
/* 当前页面高亮 */
.nav-menu a.active {
    color:var(--champagne-gold);
}
.nav-menu a.active::after {
    width:100%;
}
.lang-switch {
    display:flex;
    gap:10px;
}
.lang-switch button {
    background:transparent;
    border:1px solid var(--border-light);
    padding:7px 14px;
    cursor:pointer;
    font-size:14px;
    border-radius:2px;
    transition: all 0.28s;
}
.lang-switch button.active {
    background-color:var(--text-dark);
    color:#fff;
    border-color:var(--text-dark);
}
.lang-switch button:hover:not(.active) {
    border-color:var(--champagne-gold);
    color:var(--champagne-gold);
}

/* ========= Banner ========= */
.banner {
    background-color:#f5f1eb;
    padding: 90px 20px;
    text-align:center;
}
.banner h2 {
    font-size:48px;
    margin-bottom:16px;
}
.banner p {
    font-size:18px;
    color:var(--text-gray);
    margin-bottom:32px;
}
.banner .btn {
    border:1px solid var(--text-dark);
    padding:13px 36px;
    text-decoration:none;
    color:var(--text-dark);
    display:inline-block;
    transition:0.3s;
}
.banner .btn:hover {
    background-color:var(--text-dark);
    color:#ffffff;
}

/* ========= 通用区块标题 ========= */
.section-title {
    text-align:center;
    padding:72px 0 24px;
}
.section-title h3 {
    font-size:32px;
}
.section-title p {
    color:var(--text-gray);
    margin-top:10px;
}

/* ========= 产品网格 ========= */
.product-grid {
    display:grid;
    grid-template-columns: repeat(auto-fill, minmax(336px, 1fr));
    gap:44px;
    padding-bottom:84px;
}
.product-card {
    background:var(--white);
    cursor:pointer;
    transition:0.3s ease;
}
.product-card:hover {
    box-shadow:0 6px 18px rgba(0,0,0,0.06);
}
.img-box {
    overflow:hidden;
    background:#f7f4f0;
}
.product-card img {
    width:100%;
    height:auto;
    transition:transform 0.4s ease;
    display:block;
}
.product-card:hover img {
    transform:scale(1.045);
}
.product-info {
    padding:22px 18px;
}
.product-info h4 {
    font-size:20px;
    margin-bottom:8px;
}
.product-info .desc {
    color:var(--text-gray);
    font-size:15px;
}

/* ========= About 区块 ========= */
.about-block {
    background-color:#f5f1eb;
    padding:72px 20px;
}
.about-wrap {
    max-width:840px;
    margin:0 auto;
    text-align:center;
}
.about-wrap h3 {
    font-size:32px;
    margin-bottom:20px;
}
.about-wrap p {
    color:var(--text-gray);
    font-size:16px;
}

/* ========= Contact 区块 ========= */
.contact-block {
    padding:72px 20px;
    text-align:center;
}
.contact-block h3 {
    font-size:32px;
    margin-bottom:20px;
}
.contact-block p {
    font-size:17px;
    color:var(--text-gray);
    line-height:2.1;
}

/* ========= 页脚 ========= */
footer {
    border-top:1px solid var(--border-light);
    padding:36px 0;
    text-align:center;
    color:#777;
    font-size:14px;
    background:var(--white);
}

/* ========= 图片放大弹窗 ========= */
.lightbox{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,0.88);
    display:none;
    align-items:center;
    justify-content:center;
    z-index:9999;
    padding:20px;
}
.lightbox.show{
    display:flex;
}
.lightbox img{
    max-width:90%;
    max-height:90vh;
}
.lightbox .close{
    position:absolute;
    top:26px;
    right:32px;
    color:#fff;
    font-size:38px;
    cursor:pointer;
}

/* 双语控制 */
.cn{display:none;}
.en{display:block;}

/* =========移动端适配========= */
@media(max-width:768px){
    nav{
        flex-direction:column;
        gap:20px;
        padding:22px 16px;
    }
    .nav-menu{
        gap:22px;
    }
    .banner h2{
        font-size:32px;
    }
}