/* ========== 1.全局基础通用样式（全站共用） ========== */
:root {
    --primary: #ff4b1f;
    --text-dark: #1a1a1a;
    --text-normal: #444;
    --text-light: #777;
    --bg-gray: #f5f7fa;
    --border: #e5e7eb;
    --shadow: 0 8px 24px rgba(0,0,0,0.06);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}
a {
    text-decoration: none;
    color: inherit;
}
ul {
    list-style: none;
}
img {
    max-width: 100%;
    display: block;
}
body {
    color: var(--text-normal);
    line-height: 1.7;
    padding-top: 61px;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 30px;
}
.btn {
    display: inline-block;
    padding: 12px 36px;
    border-radius: 4px;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: 0.3s;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: #e04018;
}
.section-title {
    text-align: center;
    margin: 70px 0 50px;
}
.section-title h2 {
    font-size: 32px;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 600;
}
.section-title p {
    font-size: 16px;
    color: var(--text-light);
}

/* 导航头部 */
.header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9999;
}
.header-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 1px;
    flex-shrink: 0;
}
.header-nav {
    display: flex;
    align-items: center;
}
.header-nav ul {
    display: flex;
    gap: 48px;
}
.header-nav a {
    font-size: 16px;
    color: var(--text-normal);
    transition: 0.2s;
    white-space: nowrap;
}
.header-nav a.active,
.header-nav a:hover {
    color: var(--primary);
}
.hamburger {
    display: none;
    font-size: 26px;
    cursor: pointer;
    color: var(--text-dark);
    padding: 0 10px;
    flex-shrink: 0;
    margin-left: auto;
}
@media(max-width:768px) {
    .header-nav ul {
        display: none !important;
    }
    .hamburger {
        display: block;
    }
    .header-nav ul.mobile-menu {
        display: block !important;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: var(--shadow);
        z-index: 9998;
    }
    .header-nav ul.mobile-menu li {
        padding: 15px 30px;
        border-bottom: 1px solid #f5f5f5;
    }
}

/* 页脚 */
.footer-wrap {
    background: #111827;
    color: #ccc;
    padding: 60px 0 30px;
}
.footer-wrap p {
    text-align: center;
    font-size: 13px;
}

/* 公用功能卡片 block_func */
.func-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}
.func-item {
    background: #fff;
    box-shadow: var(--shadow);
    border-radius: 8px;
    padding: 40px 25px;
    text-align: center;
}
.func-item h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 16px;
}
.func-item p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* 公用定价卡片 block_price */
.price-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto 80px;
}
.price-card {
    background: #fff;
    box-shadow: var(--shadow);
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
}
.price-content {
    padding: 45px 30px;
}
.price-card h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 16px;
}
.price-desc {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 24px;
}
.price-num {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 30px;
}
.price-num span {
    font-size: 16px;
    font-weight: normal;
    color: var(--text-light);
}
.tip-card h3 {
    color: var(--primary);
}
.tip-text {
    font-size: 16px;
    color: var(--text-normal);
    line-height: 1.8;
}

/* ========== 2.首页独有样式 index ========== */
.banner-box {
    background: #fff;
    padding: 90px 0;
}
.banner-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
}
.banner-text {
    flex: 1;
    min-width: 320px;
}
.banner-text h1 {
    font-size: 40px;
    color: var(--text-dark);
    margin-bottom: 24px;
}
.banner-text p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 35px;
    max-width: 580px;
}
.banner-img {
    flex: 1;
    min-width: 320px;
}
@media(max-width:768px) {
    .banner-img {
        display: none;
    }
}
.bottom-ad {
    background: var(--primary);
    padding: 70px 0;
    text-align: center;
    color: #fff;
}
.bottom-ad h2 {
    font-size: 30px;
    margin-bottom: 16px;
}
.bottom-ad p {
    font-size: 17px;
    opacity: 0.9;
    margin-bottom: 30px;
}
.bottom-ad .btn {
    background: #fff;
    color: var(--primary);
}

/* ========== 界面展示模块样式 ========== */
.show-box{padding:80px 0;background:#f7f9fc;}
.show-wrap{display:flex;flex-wrap:wrap;gap:50px;align-items:center;}
.show-text{flex:1;min-width:320px;}
.show-text h3{font-size:32px;color:var(--text-dark);margin-bottom:20px;}
.show-text p{color:var(--text-normal);margin-bottom:16px;line-height:1.8;}
.show-list li{padding:6px 0;color:var(--text-normal);padding-left:12px;}
.show-img{flex:1;min-width:320px;}
.img-empty{background:#e8ebf2;height:420px;display:flex;align-items:center;justify-content:center;color:#888;border-radius:8px;box-shadow:var(--shadow);}

/* ========== 常见问题模块样式 ========== */
.faq-box{padding:80px 0;background:#f7f9fc;}
.faq-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(420px,1fr));gap:40px;}
.faq-item{background:#fff;padding:32px;border-radius:10px;box-shadow:var(--shadow);display:flex;gap:22px;}
.faq-date{color:#999;line-height:1.6;white-space:nowrap;}
.faq-info h4{font-size:24px;color:var(--text-dark);margin-bottom:14px;}
.faq-info p{color:#666;line-height:1.8;}