/* Xiaomi Style CSS */
:root {
    --primary-color: #ff6700;
    --text-color: #333;
    --light-text: #757575;
    --bg-color: #f5f5f5;
    --white: #ffffff;
    --border-color: #e0e0e0;
}

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

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft Yahei", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

.container {
    max-width: 1226px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    height: 72px;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 500px;
    background: #1c1c1c;
    color: var(--white);
    display: flex;
    align-items: center;
    text-align: center;
    background-size: cover;
    background-position: center;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 20px;
    opacity: 0.8;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    position: relative;
}

/* Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: var(--white);
    padding: 40px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

/* Team */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-member {
    text-align: center;
}

.member-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 20px;
    background: #eee;
}

/* Footer */
footer {
    background: #fafafa;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 16px;
}

.footer-section p, .footer-section li {
    font-size: 14px;
    color: var(--light-text);
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    text-align: center;
    font-size: 12px;
    color: var(--light-text);
}

.footer-links {
    margin-top: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero-content h1 {
        font-size: 32px;
    }
}