* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", "PingFang SC", "Helvetica Neue", Roboto, sans-serif;
}
:root {
    --primary: #2e7d32;
    --primary-dark: #1b5e20;
    --primary-light: #4caf50;
    --accent: #f5b841;
    --gray: #f8f8f8;
    --text: #222;
}
a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}
.top-bar {
    background: var(--primary);
    color: #fff;
    padding: 8px 0;
    font-size: 14px;
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 99;
}
nav {
    display: flex;
    align-items: center;
    padding: 15px 0;
    flex-wrap: wrap;
}
.logo-area {
    display: flex;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}
.logo-img {
    height: 50px;
    width: auto;
    max-height: 50px;
    display: block;
}
.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary);
    letter-spacing: 1px;
    white-space: nowrap;
}
.nav-list {
    display: flex;
    margin-left: auto;
    gap: 28px;
}
.nav-list li a {
    cursor: pointer;
    padding: 5px 0;
    display: inline-block;
}
.nav-list li a:hover {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}
.nav-tel {
    background: var(--primary);
    color: #fff;
    padding: 8px 18px;
    border-radius: 30px;
    margin-left: 25px;
    transition: background 0.2s;
}
.nav-tel:hover {
    background: var(--primary-dark);
}
.btn {
    padding: 12px 32px;
    background: var(--accent);
    color: var(--primary);
    border-radius: 40px;
    font-weight: bold;
    display: inline-block;
    cursor: pointer;
    transition: 0.2s;
    border: none;
}
.btn:hover {
    background: #ffce5c;
    transform: translateY(-2px);
}
.title {
    text-align: center;
    margin-bottom: 50px;
}
.title h2 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}
.title span {
    display: block;
    width: 70px;
    height: 3px;
    background: var(--accent);
    margin: 0 auto;
    border-radius: 3px;
}
.banner {
    height: 420px;
    background: linear-gradient(97deg, rgba(46,125,50,0.92), rgba(27,94,32,0.85)), url('https://img1.baidu.com/it/u=3681254123,3177214532&fm=253&fmt=auto&app=138&f=JPEG?w=800&h=400') center/cover no-repeat;
    color: #fff;
    display: flex;
    align-items: center;
}
.banner-text h1 {
    font-size: 42px;
    margin-bottom: 15px;
}
.banner-text p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 700px;
    line-height: 1.8;
}
.banner-tel {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 25px;
    background: rgba(0,0,0,0.3);
    display: inline-block;
    padding: 5px 15px;
    border-radius: 40px;
}
.about-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin: 40px 0;
}
.about-text p {
    line-height: 1.9;
    color: #555;
    margin-bottom: 18px;
}
.about-img {
    width: 100%;
    height: 260px;
    background: #e9e6e0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    font-weight: 500;
}
.video-wrapper {
    background: #000;
    border-radius: 24px;
    overflow: hidden;
    aspect-ratio: 16/9;
    max-width: 1000px;
    margin: 0 auto;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}
.video-wrapper iframe {
    width: 100%;
    height: 100%;
    border: 0;
}
.sale-advantage {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
    gap: 25px;
    margin: 40px 0;
}
.adv-card {
    padding: 28px 20px;
    background: var(--gray);
    border-radius: 20px;
    text-align: center;
}
.adv-card h4 {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 14px;
}
.pro-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
    gap: 28px;
    margin-top: 30px;
}
.pro-card {
    background: #fff;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #f0f0f0;
    transition: 0.2s;
}
.pro-card:hover {
    transform: translateY(-5px);
}
.pro-img {
    height: 170px;
    background: #f5f2e9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}
.pro-info {
    padding: 20px;
}
.pro-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #e8f5e9;
    color: var(--primary);
    border-radius: 30px;
    font-size: 12px;
}
.join-box {
    background: #fff;
    padding: 40px;
    border-radius: 28px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 45px;
    align-items: center;
    box-shadow: 0 12px 25px rgba(0,0,0,0.03);
    margin-top: 20px;
}
.join-ul li {
    padding: 12px 0;
    border-bottom: 1px solid #ececec;
}
.join-tel {
    margin-top: 20px;
    font-size: 20px;
    color: var(--primary);
    font-weight: bold;
    background: #e8f5e9;
    padding: 8px 18px;
    border-radius: 48px;
    display: inline-block;
}
.map-box {
    width: 100%;
    height: 300px;
    background: #eef2f7;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px;
    font-size: 16px;
}
.article-item {
    background: #fff;
    border-radius: 20px;
    padding: 24px;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.article-item h3 {
    color: var(--primary);
    margin-bottom: 10px;
}
.article-item h3 a:hover {
    text-decoration: underline;
}
.article-date {
    color: #888;
    font-size: 14px;
    margin-bottom: 12px;
}
.article-summary {
    color: #555;
    line-height: 1.6;
    margin-bottom: 12px;
}
.readmore {
    color: var(--primary);
    font-weight: 500;
}
.sale-tel-box {
    color: var(--primary);
    background: #e8f5e9;
    display: inline-block;
    padding: 10px 28px;
    border-radius: 60px;
    font-weight: bold;
    font-size: 22px;
}
footer {
    background: #1a202c;
    color: #cbd5e0;
    padding: 50px 0 20px;
    margin-top: 30px;
}
.foot-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
    gap: 35px;
    margin-bottom: 40px;
}
.foot-block h4 {
    color: #fff;
    margin-bottom: 18px;
}
.foot-block .foot-tel {
    font-size: 20px;
    color: #4caf50;
    font-weight: bold;
}
.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #2d3748;
    font-size: 13px;
}

/* ========== 响应式适配 ========== */
@media (max-width: 1024px) {
    .nav-list {
        gap: 18px;
    }
}
@media (max-width: 880px) {
    .nav-list {
        gap: 12px;
        font-size: 14px;
    }
    .nav-tel {
        display: none;
    }
    .banner {
        height: auto;
        padding: 60px 0;
    }
    .banner-text h1 {
        font-size: 28px;
    }
    .about-wrap, .join-box {
        grid-template-columns: 1fr;
    }
    .logo-text {
        font-size: 16px;
    }
    .logo-img {
        height: 40px;
        max-height: 40px;
    }
}
@media (max-width: 600px) {
    .logo-text {
        display: none;
    }
    .logo-img {
        height: 36px;
        max-height: 36px;
    }
    .nav-list {
        gap: 8px;
        font-size: 13px;
    }
    .banner-text h1 {
        font-size: 22px;
    }
    .banner-text p {
        font-size: 15px;
    }
    .banner-tel {
        font-size: 18px;
    }
    .title h2 {
        font-size: 24px;
    }
    .sale-tel-box {
        font-size: 18px;
        padding: 8px 16px;
    }
}