/* --- 定义高级感配色 --- */
:root {
    --bg-color: #0B0C10;       /* 深邃黑 */
    --card-bg: #1F2833;        /* 深灰蓝 */
    --text-main: #C5C6C7;      /* 钛金灰 */
    --accent: #45A29E;         /* 电光蓝 */
    --gold: #D4AF37;           /* 香槟金 */
    --font-en: 'Inter', sans-serif;
    --font-cn: 'Noto Sans SC', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-en), var(--font-cn);
    line-height: 1.6;
}

/* --- 导航栏 --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(11, 12, 16, 0.9); /* 磨砂玻璃效果 */
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
    color: white;
}

.highlight { color: var(--accent); }

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    margin-left: 30px;
    font-size: 14px;
    transition: 0.3s;
}

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

.btn-login {
    border: 1px solid var(--accent);
    padding: 8px 20px;
    border-radius: 2px;
    color: var(--accent) !important;
}

/* --- 首屏 Hero --- */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content { z-index: 2; }

.subtitle {
    color: var(--accent);
    letter-spacing: 4px;
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: 600;
}

h1 {
    font-size: 4rem; /* 大字体体现气场 */
    color: white;
    line-height: 1.2;
    margin-bottom: 30px;
    font-weight: 700;
}

.gold-text {
    color: var(--gold);
    /* 文字渐变光泽感 */
    background: linear-gradient(to right, #D4AF37, #FDC830);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.description {
    max-width: 600px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #888;
}

/* --- 按钮组 --- */
.btn-primary {
    background: var(--gold);
    color: #000;
    border: none;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.btn-primary:hover { background: #fff; }

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 15px 40px;
    font-size: 16px;
    margin-left: 20px;
    cursor: pointer;
    transition: 0.3s;
}

.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }

/* --- 背景光晕特效 --- */
.glow-effect {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(69,162,158,0.15) 0%, rgba(0,0,0,0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

/* --- 服务卡片 --- */
.services {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 80px 5%;
    background: #0f1014;
}

.card {
    background: rgba(255, 255, 255, 0.03); /* 极简深色背景 */
    padding: 40px;
    width: 300px;
    border-top: 2px solid transparent;
    transition: 0.4s;
    cursor: default;
}

.card:hover {
    transform: translateY(-10px);
    border-top: 2px solid var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.card h3 { color: white; margin-bottom: 5px; }
.card p { color: #666; font-size: 14px; }
.card .line {
    width: 30px;
    height: 2px;
    background: var(--gold);
    margin: 20px 0;
}
.card .detail { color: #aaa; font-size: 15px; }

/* --- 页脚 --- */
footer {
    text-align: center;
    padding: 28px 5%;
    color: #9aa0a6; /* 可读的浅灰色 */
    font-size: 13px;
    border-top: 1px solid rgba(255,255,255,0.04);
    background: transparent;
}

footer p { margin: 4px 0; }

footer .icp {
    margin-top: 6px;
    color: #8ea0a6;
    font-size: 12px;
    opacity: 0.95;
}

@media (max-width: 600px) {
    footer { padding: 20px 4%; font-size: 12px; }
    footer .icp { font-size: 12px; }
}