/* =============== 主页面导航栏样式 =============== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(20, 25, 40, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    border-bottom: 1px solid rgba(79, 172, 254, 0.2);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
}

.logo img {
    height: 40px;
    width: 40px;
    border-radius: 8px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: rotate(15deg);
}

/* main-nav.css - 添加网站名称 */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-name {
  font-size: 1.4rem;
  font-weight: bold;
  background: linear-gradient(90deg, #6c5ce7, #a29bfe, #00cec9);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}


.nav-items {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-item {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.nav-item i {
    color: #4facfe;
    font-size: 0.95rem;
}

.nav-item:hover {
    background: rgba(79, 172, 254, 0.15);
    color: white;
    transform: translateY(-2px);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(25, 30, 45, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    min-width: 240px;
    padding: 10px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
    border: 1px solid rgba(79, 172, 254, 0.2);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.2s ease;
    gap: 10px;
}

.dropdown-content a i {
    color: #4facfe;
    width: 20px;
    text-align: center;
}

.dropdown-content a:hover {
    background: rgba(79, 172, 254, 0.15);
    color: white;
    padding-left: 25px;
}

/* 右侧时间区域 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-date, .nav-clock {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.08);
    padding: 6px 12px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
}

/* 主内容区域 */
.content {
    padding-top: 100px;
    min-height: 100vh;
}

.welcome-container {
    max-width: 1200px;
    margin: 50px auto;
    padding: 40px;
    text-align: center;
    background: rgba(20, 25, 40, 0.5);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(79, 172, 254, 0.2);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.welcome-container h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.welcome-container p {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 50px;
}

.stat-item {
    background: rgba(79, 172, 254, 0.1);
    border-radius: 15px;
    padding: 25px 35px;
    min-width: 180px;
    border: 1px solid rgba(79, 172, 254, 0.2);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-8px);
    background: rgba(79, 172, 254, 0.15);
    box-shadow: 0 10px 25px rgba(79, 172, 254, 0.15);
}

.stat-item i {
    font-size: 2.5rem;
    color: #4facfe;
    margin-bottom: 15px;
}

.stat-item span {
    display: block;
    font-size: 2.2rem;
    font-weight: bold;
    color: white;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}