/* assets/css/style.css */

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

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #1a1a1a;
    background-color: #f5f7fa;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Header */
header {
    background-color: #0f1c2e;
    color: #fff;
    padding: 15px 40px;
    position: sticky;
    top: 0;
    z-index: 999;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 20px;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-menu a {
    color: #fff;
    font-size: 14px;
    padding: 6px 8px;
}

.nav-menu a.active,
.nav-menu a:hover {
    background-color: #1f3a5f;
    border-radius: 4px;
}

.cta-btn {
    background-color: #2d6cdf;
    color: #fff;
    padding: 8px 14px;
    border-radius: 4px;
    font-size: 14px;
}

/* Mobile */
.menu-toggle {
    display: none;
    font-size: 22px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #0f1c2e;
        flex-direction: column;
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }
}

/* Sections */
section {
    padding: 60px 40px;
}

.container {
    max-width: 1200px;
    margin: auto;
}

/* Hero */
.hero {
    background-color: #14263f;
    color: #fff;
    padding: 80px 40px;
    text-align: center;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    margin-bottom: 20px;
}

/* Grid */
.grid {
    display: grid;
    gap: 20px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
    background-color: #fff;
    padding: 20px;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.card h3 {
    margin-bottom: 10px;
}

/* Image Placeholder */
.img-placeholder {
    background-color: #ddd;
    height: 200px;
    margin-bottom: 10px;
}

/* Footer */
footer {
    background-color: #0f1c2e;
    color: #ccc;
    padding: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.footer h4 {
    color: #fff;
    margin-bottom: 10px;
}

.footer a {
    display: block;
    font-size: 14px;
    margin-bottom: 6px;
}

.footer-bottom {
    margin-top: 30px;
    border-top: 1px solid #333;
    padding-top: 15px;
    font-size: 13px;
    text-align: center;
}
/* ===== ͼƬͳһ¿ØÖÆ£¨¹Ø¼üÐÞ¸´£© ===== */

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ÈÝÆ÷ÄÚͼƬ£¨ÄÚÈÝͼ£© */
.container img {
    width: 100%;
    border-radius: 6px;
}

/* ¿¨Æ¬Í¼Æ¬£¨²úƷͼ£© */
.card img {
    width: 100%;
    height: 220px;
    object-fit: contain; /* °×µ×²úÆ·ÍƼö */
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 4px;
}

/* ºá·ù´óͼ£¨¹¤³§/·âÃæͼ£© */
.banner-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 6px;
}