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

body {
    font-family: 'SourceHanSans-Regular', 'Microsoft YaHei', Arial, sans-serif;
    background-color: #ffffff;
    color: #333;
    line-height: 1.6;
}

.container {
    width: 87%;
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: 64px 48px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: rgba(10, 36, 99, 1);
    text-align: center;
    margin-bottom: 48px;
    font-family: 'SourceHanSans-Bold', sans-serif;
}

/* 顶部导航栏 */
.header {
    width: 100%;
    height: auto;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 48px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    height: 40px;
    width: auto;
}

.company-name {
    font-size: 20px;
    font-weight: 700;
    color: rgba(10, 36, 99, 1);
    font-family: 'SourceHanSans-Bold', sans-serif;
}

.nav-menu {
    display: flex;
    gap: 32px;
    list-style: none;
    flex: 1;
    justify-content: center;
}

.nav-menu li a {
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
    font-family: 'SourceHanSans-Regular', sans-serif;
    color: rgba(51, 51, 51, 1);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: rgba(10, 36, 99, 1);
    font-family: 'SourceHanSans-Medium', sans-serif;
}

.consult-btn {
    padding: 8px 24px;
    background: rgba(255, 125, 0, 1);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'SourceHanSans-Medium', sans-serif;
    white-space: nowrap;
}

.consult-btn:hover {
    background: rgba(255, 125, 0, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 125, 0, 0.3);
}

/* 移动端导航组件 - 桌面端完全隐藏 */
.mnav-toggle { display: none; }
.mnav-overlay { display: none; }
.mnav-drawer { display: none; }

/* 页面标题区 */
.page-title {
    width: 100%;
    height: 201px;
    background: linear-gradient(135deg, rgba(10, 36, 99, 1) 0%, rgba(46, 90, 172, 1) 100%);
    display: flex;
    align-items: center;
    padding: 0 48px;
}

.title-content {
    max-width: 361px;
}

.title-main {
    font-size: 40px;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
    font-family: 'SourceHanSans-Bold', sans-serif;
    line-height: 1.2;
}

.title-sub {
    font-size: 20px;
    color: white;
    font-family: 'SourceHanSans-Regular', sans-serif;
    line-height: 1.2;
}

/* 页脚 */
.footer {
    background: rgba(10, 36, 99, 1);
    padding: 64px 48px 32px;
    color: white;
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 32px;
}

.footer-company-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-info {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
    line-height: 1.6;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: rgba(255, 125, 0, 1);
}

.footer-contact-item {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact-item i {
    color: rgba(255, 125, 0, 1);
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* container 放宽 */
    .container {
        width: 100%;
        padding: 0 20px;
    }
    /* 头部导航 */
    .header {
        padding: 10px 16px;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
    }
    .company-name {
        font-size: 16px;
    }
    .logo {
        height: 32px;
    }
    /* 桌面导航隐藏 */
    .nav-menu { display: none; }
    /* 咨询按钮 */
    .consult-btn {
        padding: 7px 14px;
        font-size: 13px;
    }
    /* ===== mnav- 侧滑抽屉系统（移动端专用） ===== */
    .mnav-toggle {
        display: flex;
        width: 38px;
        height: 38px;
        background: none;
        border: none;
        cursor: pointer;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 4px;
        z-index: 1002;
        padding: 0;
        margin-left: 8px;
        flex-shrink: 0;
    }
    .mnav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: rgba(10, 36, 99, 1);
        transition: all 0.25s ease;
        border-radius: 1px;
    }
    .mnav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }
    .mnav-toggle.active span:nth-child(2) { opacity: 0; }
    .mnav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }
    /* 遮罩 */
    .mnav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.45);
        z-index: 1000;
    }
    .mnav-overlay.active { display: block; }
    /* 抽屉面板 */
    .mnav-drawer {
        display: block;
        position: fixed;
        top: 0;
        right: -260px;
        width: 240px;
        height: 100%;
        background: #fff;
        z-index: 1001;
        transition: right 0.3s ease;
        padding: 60px 0 0 0;
        box-shadow: -2px 0 12px rgba(0,0,0,0.15);
        overflow-y: auto;
    }
    .mnav-drawer.active { right: 0; }
    .mnav-drawer a {
        display: block;
        padding: 12px 24px;
        font-size: 15px;
        color: rgba(51,51,51,1);
        text-decoration: none;
        border-bottom: 1px solid #f0f0f0;
        font-family: 'SourceHanSans-Regular', sans-serif;
    }
    .mnav-drawer a:hover,
    .mnav-drawer a.mnav-active {
        color: rgba(10,36,99,1);
        background: rgba(10,36,99,0.04);
        font-family: 'SourceHanSans-Medium', sans-serif;
    }
    /* 页面标题 */
    .title-main {
        font-size: 28px;
    }
    .title-sub {
        font-size: 16px;
    }
    .page-title {
        min-height: 160px;
        padding: 0 20px;
    }
    /* section */
    .section {
        padding: 40px 16px;
    }
    .section-title {
        font-size: 24px;
        margin-bottom: 32px;
    }
    /* 页脚 */
    .footer {
        padding: 40px 24px 24px;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    img {
        max-width: 100%;
        height: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .section {
        padding: 32px 12px;
    }
    .section-title {
        font-size: 22px;
        margin-bottom: 24px;
    }
    .title-main {
        font-size: 24px;
    }
    .title-sub {
        font-size: 14px;
    }
    .page-title {
        min-height: 140px;
        padding: 0 16px;
    }
}