:root {
    --bg-black: #050505;
    --bg-panel: #111111;
    --neon-green: #00FF41;
    --neon-green-glow: rgba(0, 255, 65, 0.6);
    --neon-green-dim: rgba(0, 255, 65, 0.1);
    --text-main: #E0E0E0;
    --text-muted: #888888;
    --grid-line: rgba(0, 255, 65, 0.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Rajdhani', "Microsoft YaHei", -apple-system, sans-serif;
    background-color: var(--bg-black);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    /* 赛博朋克网格背景 */
    background-image: 
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; display: block; border-radius: 4px; }

/* 速度感流光线条 */
.speed-lines {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(90deg, transparent, transparent 100px, rgba(0, 255, 65, 0.02) 100px, rgba(0, 255, 65, 0.02) 102px);
    z-index: -1; transform: skewX(-20deg); opacity: 0.5; pointer-events: none;
}

/* 导航 */
.header {
    background: rgba(5, 5, 5, 0.9);
    border-bottom: 1px solid var(--neon-green);
    box-shadow: 0 0 15px var(--neon-green-dim);
    position: sticky; top: 0; z-index: 1000; backdrop-filter: blur(10px);
}
.nav-wrap { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; }
.logo { font-size: 24px; font-weight: 900; color: #FFF; display: flex; align-items: center; gap: 12px; font-style: italic; letter-spacing: 2px; }
.logo-icon { width: 40px; height: 40px; border: 2px solid var(--neon-green); padding: 4px; border-radius: 50%; box-shadow: 0 0 10px var(--neon-green-glow); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 15px; font-weight: bold; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.nav-links a:hover, .nav-links a.active { color: var(--neon-green); text-shadow: 0 0 8px var(--neon-green); }

/* 霓虹按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; padding: 15px 40px;
    font-size: 18px; font-weight: 900; cursor: pointer; transition: 0.2s;
    text-transform: uppercase; letter-spacing: 2px; font-style: italic;
    transform: skewX(-15deg); position: relative; overflow: hidden;
}
.btn span { transform: skewX(15deg); display: block; z-index: 2; position: relative; }
.btn::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent); transition: 0.5s; z-index: 1; }
.btn:hover::before { left: 100%; }

.btn-primary {
    background-color: var(--neon-green); color: #000;
    box-shadow: 0 0 20px var(--neon-green-glow); border: 2px solid var(--neon-green);
}
.btn-primary:hover { box-shadow: 0 0 40px var(--neon-green-glow); background-color: #00E53A; }
.btn-outline {
    background-color: transparent; color: var(--neon-green);
    border: 2px solid var(--neon-green); box-shadow: inset 0 0 10px var(--neon-green-dim), 0 0 10px var(--neon-green-dim);
}
.btn-outline:hover { background-color: var(--neon-green-dim); box-shadow: inset 0 0 20px var(--neon-green-glow), 0 0 20px var(--neon-green-glow); }

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; position: relative; z-index: 1; }
.sec-title { 
    text-align: center; font-size: 42px; font-weight: 900; margin-bottom: 10px; 
    color: #FFF; font-style: italic; letter-spacing: 2px; text-transform: uppercase;
}
.sec-title span { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-green-glow); }
.sec-subtitle { text-align: center; font-size: 16px; color: var(--text-muted); margin-bottom: 60px; letter-spacing: 1px; }

/* 科技面板框 */
.tech-panel {
    background: var(--bg-panel); border: 1px solid #333; position: relative;
}
.tech-panel::after {
    content: ''; position: absolute; top: -1px; left: -1px; width: 15px; height: 15px;
    border-top: 2px solid var(--neon-green); border-left: 2px solid var(--neon-green);
}
.tech-panel::before {
    content: ''; position: absolute; bottom: -1px; right: -1px; width: 15px; height: 15px;
    border-bottom: 2px solid var(--neon-green); border-right: 2px solid var(--neon-green);
}

/* Hero区 */
.hero { text-align: center; padding: 100px 20px 80px; position: relative; }
.hero h1 { font-size: 70px; font-weight: 900; margin-bottom: 20px; font-style: italic; letter-spacing: 2px; color: #FFF; text-transform: uppercase; }
.hero h1 span { color: var(--neon-green); text-shadow: 0 0 20px var(--neon-green-glow); }
.hero .subtitle { font-size: 22px; color: var(--text-muted); margin-bottom: 50px; letter-spacing: 4px; font-weight: bold; }
.hero-btns { display: flex; justify-content: center; gap: 30px; margin-bottom: 70px; }
.hero-visual { max-width: 950px; margin: 0 auto; position: relative; padding: 2px; background: linear-gradient(45deg, var(--neon-green), transparent, transparent, var(--neon-green)); }
.hero-visual img { border: 1px solid #222; box-shadow: 0 20px 50px rgba(0,0,0,0.8); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.f-box { text-align: center; padding: 30px 15px; transition: 0.3s; transform: skewX(-5deg); }
.f-box > div { transform: skewX(5deg); }
.f-box:hover { border-color: var(--neon-green); box-shadow: 0 0 20px var(--neon-green-dim); background: rgba(0,255,65,0.02); }
.f-box img { width: 60px; height: 60px; margin: 0 auto 20px; filter: invert(70%) sepia(80%) saturate(400%) hue-rotate(80deg) brightness(120%) contrast(110%); drop-shadow(0 0 10px var(--neon-green)); }
.f-box h3 { font-size: 18px; font-weight: 900; margin-bottom: 10px; color: #FFF; text-transform: uppercase; }
.f-box p { font-size: 13px; color: var(--text-muted); }

/* 功能详情 */
.detail-item { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; }
.detail-item:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text h3 { font-size: 34px; font-weight: 900; margin-bottom: 20px; color: var(--neon-green); font-style: italic; text-transform: uppercase; }
.d-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.8; }
.d-data { display: inline-block; padding: 10px 20px; border: 1px solid var(--neon-green); color: var(--neon-green); font-weight: 900; font-size: 18px; font-style: italic; box-shadow: inset 0 0 10px var(--neon-green-dim); letter-spacing: 1px; }
.d-visual { flex: 1; position: relative; }
.d-visual::after { content: ''; position: absolute; width: 100%; height: 100%; top: 10px; left: 10px; border: 2px solid var(--neon-green); z-index: -1; opacity: 0.3; }
.d-visual img { filter: contrast(1.2) grayscale(0.2); }

/* 浏览器对比 */
.compare-box { padding: 40px; }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 20px; border-bottom: 1px solid #333; }
.compare-table th { font-weight: 900; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.compare-table td { font-weight: bold; color: #CCC; }
.compare-table .hl { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-green-glow); font-size: 18px; }
.compare-table tr:hover td { background: rgba(255,255,255,0.02); }

/* 数据背书 */
.data-sec { background: #000; border-top: 1px solid #333; border-bottom: 1px solid #333; padding: 80px 0; margin: 60px 0; position: relative; }
.data-sec::before { content: 'SYSTEM STATUS: OPTIMAL'; position: absolute; top: 10px; left: 20px; font-size: 12px; color: var(--neon-green); font-family: monospace; letter-spacing: 2px; }
.data-inner { max-width: 1000px; margin: 0 auto; display: flex; justify-content: space-around; align-items: center; text-align: center; }
.data-item h4 { font-size: 56px; font-weight: 900; color: var(--neon-green); text-shadow: 0 0 20px var(--neon-green-glow); margin-bottom: 5px; }
.data-item p { font-size: 14px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 2px; }
.data-icon { width: 80px; height: 80px; filter: invert(70%) sepia(80%) saturate(400%) hue-rotate(80deg) brightness(120%) contrast(110%); drop-shadow(0 0 15px var(--neon-green)); }

/* 下载版本区 */
.dl-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { padding: 40px 30px; text-align: center; transition: 0.3s; }
.dl-card:hover { border-color: var(--neon-green); box-shadow: 0 0 20px var(--neon-green-dim); transform: translateY(-5px); }
.dl-card h3 { font-size: 24px; font-weight: 900; color: #FFF; margin-bottom: 15px; text-transform: uppercase; }
.dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; height: 42px; }
.dl-card .btn { width: 100%; }
.dl-card.pro { border-color: var(--neon-green); box-shadow: inset 0 0 20px var(--neon-green-dim); }
.dl-card.pro h3 { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-green-glow); }

/* FAQ */
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-item { margin-bottom: 20px; padding: 25px; border-left: 2px solid var(--neon-green); }
.faq-item h4 { font-size: 18px; font-weight: 900; color: #FFF; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.faq-item h4::before { content: ">"; color: var(--neon-green); font-family: monospace; font-weight: bold; }
.faq-item p { font-size: 15px; color: var(--text-muted); line-height: 1.7; padding-left: 22px; }

/* Footer */
.footer { background: #000; border-top: 1px solid var(--neon-green); padding: 40px 20px; text-align: center; color: var(--text-muted); font-size: 14px; margin-top: 60px; font-family: monospace; letter-spacing: 1px; }
.footer span { color: var(--neon-green); }