/* 引入字体 */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;700;800&display=swap');

:root {
    --bg-dark: #0b0c10;
    --bg-card: #141619;
    --primary: #D4AF37; /* 金色 */
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --border-color: #2a2a2a;
}

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

body {
    font-family: 'Plus Jakarta Sans', 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; }

/* 通用组件 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 100px 0; }
.text-gold { color: var(--primary); }
.btn {
    display: inline-block;
    padding: 14px 35px;
    background: var(--primary);
    color: #000;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2); background: #fff; }

/* Header */
header {
    background: rgba(11, 12, 16, 0.9);
    backdrop-filter: blur(10px);
    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: 1.5rem; font-weight: 800; color: #fff; text-transform: uppercase; letter-spacing: 2px; }
.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(--primary); }

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?q=80&w=2301&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
}
.hero-content { max-width: 800px; z-index: 2; }
.hero h1 { font-size: 4.5rem; line-height: 1.1; margin-bottom: 25px; font-weight: 800; }
.hero p { font-size: 1.3rem; color: #ddd; margin-bottom: 40px; max-width: 600px; }

/* Feature Strip (Logo 栏) */
.brand-strip { padding: 40px 0; border-bottom: 1px solid var(--border-color); background: var(--bg-card); }
.brand-flex { display: flex; justify-content: space-around; flex-wrap: wrap; opacity: 0.5; }
.brand-item { font-size: 1.2rem; font-weight: 700; color: #555; text-transform: uppercase; }

/* About Section (图文混排) */
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split-img img { width: 100%; border-radius: 8px; box-shadow: 0 20px 40px rgba(0,0,0,0.5); }
.split-text h2 { font-size: 2.8rem; margin-bottom: 20px; }
.split-text p { color: var(--text-muted); margin-bottom: 20px; }

/* Services (图文卡片) */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; margin-top: 50px; }
.service-card { 
    background: var(--bg-card); 
    border: 1px solid var(--border-color); 
    border-radius: 8px; 
    overflow: hidden; 
    transition: 0.3s; 
}
.service-card:hover { transform: translateY(-10px); border-color: var(--primary); }
.card-img { height: 240px; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.service-card:hover .card-img img { transform: scale(1.1); }
.card-body { padding: 30px; }
.card-body h3 { font-size: 1.5rem; margin-bottom: 15px; color: #fff; }
.card-body p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 20px; }
.read-more { color: var(--primary); font-weight: 700; font-size: 0.85rem; text-transform: uppercase; }

/* Stats Section */
.stats { background: var(--bg-card); padding: 80px 0; border-top: 1px solid var(--border-color); }
.stats-flex { display: flex; justify-content: space-around; text-align: center; }
.stat-item h3 { font-size: 3.5rem; color: var(--primary); margin-bottom: 10px; }
.stat-item p { color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; font-size: 0.9rem; }

/* Footer */
footer { background: #000; 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; }
.footer-info p { color: #666; max-width: 300px; margin-top: 20px; }
.footer-col h4 { color: #fff; margin-bottom: 20px; }
.footer-col a { display: block; color: #666; margin-bottom: 10px; }
.footer-col a:hover { color: var(--primary); }
.copyright { text-align: center; color: #444; font-size: 0.9rem; padding-top: 30px; border-top: 1px solid #222; }

/* Mobile */
@media(max-width: 768px) {
    .hero h1 { font-size: 2.8rem; }
    .split-section { grid-template-columns: 1fr; }
    .stats-flex { flex-direction: column; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; } /* 简化处理，实际项目需加JS菜单 */
}