* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #1a2a3a 0%, #0d1b2a 100%);
    color: #e0e0e0;
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

header {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px;
    background: rgba(16, 36, 54, 0.8);
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    border-left: 6px solid #4a9de3;
}

h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #4a9de3;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

.subtitle {
    font-size: 1.3rem;
    color: #a0c8f0;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
    width: 100%;
}

.nav-card {
    background: rgba(30, 60, 90, 0.9);
    border-radius: 15px;
    padding: 40px 30px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.nav-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
    border-color: #4a9de3;
    background: rgba(40, 80, 120, 0.9);
}

.nav-card.strategy {
    border-left: 6px solid #4a9de3;
}

.nav-card.ranged {
    border-left: 6px solid #ff9e64;
}

.nav-card.magic {
    border-left: 6px solid #ba68c8;
}

.nav-card.light {
    border-left: 6px solid #4cd964;
}

.nav-card.guard {
    border-left: 6px solid #ff6b6b;
}

.nav-card.tips {
    border-left: 6px solid #ffc107;
}

.nav-card.navigation {
    border-left: 6px solid #ba68c8;
}

.nav-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.nav-title {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.nav-desc {
    font-size: 1.1rem;
    color: #a0c8f0;
    opacity: 0.9;
}

.quick-access {
    margin-top: 50px;
    padding: 30px;
    background: rgba(16, 36, 54, 0.6);
    border-radius: 12px;
    width: 100%;
}

.quick-access h2 {
    color: #4a9de3;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.quick-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.quick-btn {
    background: rgba(74, 157, 227, 0.3);
    border: 2px solid #4a9de3;
    border-radius: 8px;
    color: #fff;
    padding: 12px 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.quick-btn:hover {
    background: rgba(74, 157, 227, 0.5);
    transform: translateY(-2px);
}

footer {
    margin-top: 60px;
    padding: 30px;
    color: #a0c8f0;
    font-size: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

/* 更新通告栏样式 */
.update-notice {
    background: rgba(30, 60, 90, 0.9);
    border-radius: 10px;
    padding: 15px 20px;
    margin: 20px 0;
    width: 100%;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border-left: 4px solid #4a9de3;
}

.notice-item {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    padding: 5px 0;
}

.notice-item:last-child {
    margin-bottom: 0;
}

.notice-icon {
    font-size: 1.2rem;
    margin-right: 10px;
    color: #ff9e64;
}

.notice-text {
    font-size: 1.1rem;
    color: #e0e0e0;
    line-height: 1.5;
}