@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;700&family=Poppins:wght@600;700&display=swap');

:root {
    --primary-color: #00aaff; /* 主题色 - 科技蓝 */
    --dark-bg: #1a1a2e;      /* 深色背景 */
    --card-bg: #16213e;      /* 卡片背景 */
    --light-text: #e0e0e0;   /* 浅色文字 */
    --white-text: #ffffff;   /* 白色文字 */
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--dark-bg);
    color: var(--light-text);
    line-height: 1.7;
}

/* 头部 Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background-color: rgba(22, 33, 62, 0.5);
    backdrop-filter: blur(5px);
    border-bottom: 1px solid rgba(0, 170, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    color: var(--white-text);
}

.logo span {
    font-size: 0.9rem;
    color: var(--primary-color);
    align-self: flex-end;
    padding-bottom: 4px;
}

nav a {
    color: var(--light-text);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* 主内容区域 Hero */
.hero {
    min-height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
    background: radial-gradient(circle, rgba(22,33,62,0.8) 0%, var(--dark-bg) 70%);
}

.hero-content h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.8rem;
    color: var(--white-text);
    margin-bottom: 1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-content .subtitle {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 2.5rem;
}

/* 上线状态框 */
.status-box {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    background-color: var(--card-bg);
    padding: 1rem 1.5rem;
    border-radius: 50px;
    border: 1px solid rgba(0, 170, 255, 0.3);
    max-width: 400px;
    margin: 0 auto 2.5rem auto;
}

.status-box h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 700;
}

/* 加载动画 */
.loader {
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    width: 25px;
    height: 25px;
    animation: spin 1.2s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* "敬请期待" 按钮 */
.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white-text);
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.3s, background-color 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    background-color: #0099e6;
}

/* 禁用链接/按钮的样式 */
.disabled {
    cursor: not-allowed;
    opacity: 0.6;
    pointer-events: none; /* 如果想完全禁止点击，可以加上这个 */
}


/* 特性介绍区域 */
.features {
    padding: 5rem 5%;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--white-text);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-item {
    background-color: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    border: 1px solid rgba(0, 170, 255, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 170, 255, 0.1);
}

.feature-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    color: var(--white-text);
    margin-bottom: 1rem;
}

/* 页脚 Footer */
footer {
    padding: 2rem 5%;
    text-align: center;
    border-top: 1px solid rgba(0, 170, 255, 0.2);
    margin-top: 2rem;
}

footer .motto {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content .subtitle {
        font-size: 1rem;
    }
}