@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-dark: #0a0b14; /* 极深的蓝黑 */
    --bg-card: #131524;
    --primary: #7B61FF; /* 梦幻紫 */
    --accent: #00D4FF; /* 科技蓝 */
    --text-main: #ffffff;
    --text-muted: #b0b3c6;
    --border-color: #23263a;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* 渐变文字特效 */
.gradient-text {
    background: linear-gradient(90deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 容器与按钮 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 100px 0; }
.btn {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(90deg, var(--primary), #5a45cc);
    color: #fff;
    font-weight: 700;
    border-radius: 50px; /* 圆角更具创意感 */
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(123, 97, 255, 0.4);
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(123, 97, 255, 0.6); }

/* Header */
header {
    background: rgba(10, 11, 20, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    width: 100%;
    z-index: 1000;
    top: 0;
}
.nav-flex { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.logo { font-size: 1.6rem; font-weight: 800; color: #fff; letter-spacing: 1px; }
.logo span { color: var(--primary); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--text-muted); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Hero Section */
.hero {
    min-height: 85vh;
    background: radial-gradient(circle at 20% 50%, rgba(123, 97, 255, 0.15), transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.15), transparent 50%),
                linear-gradient(rgba(10,11,20,0.7), rgba(10,11,20,0.8)), 
                url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=2072&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    text-align: center;
}
.hero-content { max-width: 900px; margin: 0 auto; }
.hero h1 { font-size: 4.5rem; line-height: 1.1; margin-bottom: 25px; font-weight: 800; }
.hero p { font-size: 1.4rem; color: #d0d2e0; margin-bottom: 40px; }

/* Services Cards (Glassmorphism) */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-top: 50px; }
.service-card { 
    background: rgba(19, 21, 36, 0.6); 
    border: 1px solid rgba(255, 255, 255, 0.1); 
    border-radius: 16px; 
    overflow: hidden; 
    transition: 0.3s;
    backdrop-filter: blur(5px);
}
.service-card:hover { transform: translateY(-10px); border-color: var(--primary); }
.card-img { height: 220px; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.card-body { padding: 30px; }
.card-body h3 { font-size: 1.5rem; margin-bottom: 15px; color: #fff; }

/* Footer */
footer { background: #050508; padding: 80px 0 30px; border-top: 1px solid var(--border-color); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 50px; margin-bottom: 50px; }
.copyright { text-align: center; color: #444; font-size: 0.9rem; padding-top: 30px; border-top: 1px solid #111; }

@media(max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
}