:root {
    --primary-color: #00ff88;
    --primary-hover: #00cc6a;
    --bg-dark: #0a0f16;
    --bg-panel: rgba(16, 25, 36, 0.85);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: rgba(0, 255, 136, 0.2);
    --glow-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: 'Segoe UI', system-ui, sans-serif; 
    line-height: 1.6; 
    color: var(--text-main);
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 255, 136, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(0, 255, 136, 0.08), transparent 25%);
    background-attachment: fixed;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* 导航栏 */
header { 
    background: rgba(10, 15, 22, 0.95); 
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky; 
    top: 0; 
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { font-size: 24px; font-weight: bold; color: var(--primary-color); text-shadow: 0 0 10px rgba(0, 255, 136, 0.5); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { 
    font-weight: 500; 
    transition: all 0.3s; 
    text-transform: uppercase; 
    letter-spacing: 1px;
    font-size: 14px;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary-color); text-shadow: 0 0 8px rgba(0, 255, 136, 0.8); }

/* 光效标题 */
.glow-title {
    color: #fff;
    text-shadow: 0 0 15px var(--primary-color), 0 0 30px var(--primary-color);
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: 2px;
}

/* 官方按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px; border-radius: 4px; font-weight: bold;
    transition: all 0.3s; cursor: pointer;
    text-transform: uppercase; letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}
.btn:hover::before { left: 100%; }
.btn-primary { 
    background: var(--primary-color); color: #000; 
    box-shadow: var(--glow-shadow); 
}
.btn-primary:hover { background: #fff; box-shadow: 0 0 30px rgba(255,255,255,0.6); }
.btn-secondary { 
    background: transparent; color: var(--primary-color); 
    border: 1px solid var(--primary-color); 
}
.btn-secondary:hover { background: rgba(0, 255, 136, 0.1); box-shadow: var(--glow-shadow); }

/* Hero区 */
.hero { padding: 100px 0 80px; text-align: center; position: relative; overflow: hidden; }
.hero p { font-size: 22px; color: var(--text-muted); margin-bottom: 40px; }
.hero-btns { display: flex; gap: 20px; justify-content: center; margin-bottom: 60px; }
.browser-window {
    max-width: 900px; margin: 0 auto;
    border-radius: 12px; overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 255, 136, 0.15);
    background: var(--bg-panel);
}
.browser-header {
    height: 30px; background: rgba(255, 255, 255, 0.05); border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; padding: 0 15px; gap: 8px;
}
.browser-dot { width: 12px; height: 12px; border-radius: 50%; background: #475569; }
.browser-window img { width: 100%; display: block; opacity: 0.9; }

/* 通用模块样式 */
section { padding: 80px 0; }
.section-title { text-align: center; font-size: 36px; margin-bottom: 50px; color: #fff; }
.section-title span { color: var(--primary-color); }

/* 核心卖点 & 功能详情 */
.grid-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.feature-card {
    background: var(--bg-panel); padding: 40px 30px; border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s;
    position: relative; overflow: hidden;
}
.feature-card::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
    background: var(--primary-color); transform: scaleX(0); transition: 0.3s; transform-origin: left;
}
.feature-card:hover { border-color: var(--border-color); transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.feature-card:hover::after { transform: scaleX(1); }
.feature-card img { width: 60px; height: 60px; margin-bottom: 20px; filter: drop-shadow(0 0 10px var(--primary-color)); }
.feature-card h3 { font-size: 22px; margin-bottom: 15px; color: #fff; }
.feature-card p { color: var(--text-muted); font-size: 15px; }

/* 浏览器对比 */
.compare-table { width: 100%; border-collapse: collapse; margin-top: 40px; background: var(--bg-panel); border-radius: 8px; overflow: hidden; }
.compare-table th, .compare-table td { padding: 20px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.05); }
.compare-table th { background: rgba(0,0,0,0.4); font-weight: bold; color: #fff; }
.compare-table .highlight { background: rgba(0, 255, 136, 0.05); color: var(--primary-color); font-weight: bold; border-left: 1px solid var(--border-color); border-right: 1px solid var(--border-color); }

/* 版本下载 */
.versions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.version-card {
    text-align: center; padding: 50px 30px; background: var(--bg-panel);
    border: 1px solid rgba(255,255,255,0.05); border-radius: 8px;
}
.version-card:nth-child(2) { border-color: var(--primary-color); box-shadow: var(--glow-shadow); position: relative; transform: scale(1.05); z-index: 2; }
.version-card:nth-child(2)::before { content: '推荐'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--primary-color); color: #000; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: bold; }
.version-card h3 { font-size: 24px; color: #fff; margin-bottom: 15px; }
.version-card p { color: var(--text-muted); margin-bottom: 30px; height: 48px; }

/* 数据背书 */
.data-section { background: linear-gradient(135deg, #05080c, #0a1310); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.data-stats { display: flex; justify-content: space-around; text-align: center; flex-wrap: wrap; gap: 40px; }
.stat-item h4 { font-size: 48px; color: var(--primary-color); text-shadow: 0 0 20px rgba(0, 255, 136, 0.4); margin-bottom: 10px; font-family: monospace; }
.stat-item p { color: var(--text-main); font-size: 18px; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-panel); border: 1px solid rgba(255,255,255,0.05); border-radius: 8px; margin-bottom: 20px; padding: 25px; }
.faq-item h4 { font-size: 18px; color: var(--primary-color); margin-bottom: 10px; }
.faq-item p { color: var(--text-muted); }

/* 页脚 */
footer { background: #05080c; padding: 40px 0; text-align: center; color: var(--text-muted); border-top: 1px solid rgba(255,255,255,0.05); font-size: 14px; }