:root {
    --bg-dark: #050B08;
    --bg-grid: #0A140F;
    --neon-green: #00FF66;
    --neon-green-dim: rgba(0, 255, 102, 0.2);
    --neon-green-glow: rgba(0, 255, 102, 0.6);
    --cyber-gray: #8F9A94;
    --border-neon: #00FF66;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Consolas', 'Courier New', 'Microsoft YaHei', monospace;
    background-color: var(--bg-dark);
    color: #E2E8F0;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        linear-gradient(rgba(0, 255, 102, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 102, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center center;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; display: block; border-radius: 4px; filter: contrast(1.1) saturate(1.2); }

/* 赛博扫描线与高速轨迹 */
.cyber-lines { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: -1; }
.cyber-lines::before { content: ''; position: absolute; width: 2px; height: 100vh; background: linear-gradient(to bottom, transparent, var(--neon-green), transparent); left: 10%; animation: lightSpeed 3s infinite linear; opacity: 0.5; }
.cyber-lines::after { content: ''; position: absolute; width: 2px; height: 100vh; background: linear-gradient(to bottom, transparent, var(--neon-green), transparent); right: 20%; animation: lightSpeed 5s infinite linear; opacity: 0.3; }
@keyframes lightSpeed { 0% { transform: translateY(-100%); } 100% { transform: translateY(100%); } }

/* 导航 */
.header { background: rgba(5, 11, 8, 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: 800; color: #FFF; display: flex; align-items: center; gap: 15px; text-shadow: 0 0 10px var(--neon-green); letter-spacing: 2px; }
.logo img { width: 36px; height: 36px; border: 1px solid var(--neon-green); padding: 2px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 15px; color: var(--cyber-gray); 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); }

/* 赛博按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; padding: 15px 35px;
    font-size: 16px; font-weight: bold; cursor: pointer; transition: 0.3s;
    letter-spacing: 2px; text-transform: uppercase; position: relative;
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
}
.btn-primary { background: var(--neon-green); color: #000; box-shadow: inset 0 0 10px rgba(0,0,0,0.5); }
.btn-primary:hover { background: #00FF88; box-shadow: 0 0 20px var(--neon-green); }
.btn-outline { background: rgba(0,255,102,0.1); color: var(--neon-green); border: 1px solid var(--neon-green); }
.btn-outline:hover { background: var(--neon-green); color: #000; box-shadow: 0 0 20px var(--neon-green); }

/* 容器与标题 */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; position: relative; z-index: 1; }
.sec-title { text-align: center; font-size: 38px; font-weight: 800; color: #FFF; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 3px; text-shadow: 0 0 15px var(--neon-green-glow); }
.sec-title::before { content: '>> '; color: var(--neon-green); }
.sec-subtitle { text-align: center; font-size: 16px; color: var(--cyber-gray); margin-bottom: 60px; letter-spacing: 1px; }

/* Hero区 */
.hero { text-align: center; padding: 120px 20px 80px; position: relative; }
.hero h1 { font-size: 64px; font-weight: 900; margin-bottom: 20px; color: #FFF; letter-spacing: 5px; text-shadow: 0 0 20px var(--neon-green); }
.hero .subtitle { font-size: 20px; color: var(--neon-green); margin-bottom: 50px; letter-spacing: 5px; background: rgba(0,255,102,0.1); display: inline-block; padding: 5px 20px; border-left: 3px solid var(--neon-green); border-right: 3px solid var(--neon-green); }
.hero-btns { display: flex; justify-content: center; gap: 30px; margin-bottom: 60px; }
.hero-visual { max-width: 900px; margin: 0 auto; position: relative; padding: 15px; border: 1px solid var(--neon-green); background: rgba(0,255,102,0.05); }
.hero-visual::before { content: ''; position: absolute; top: -5px; left: -5px; width: 20px; height: 20px; border-top: 2px solid var(--neon-green); border-left: 2px solid var(--neon-green); }
.hero-visual::after { content: ''; position: absolute; bottom: -5px; right: -5px; width: 20px; height: 20px; border-bottom: 2px solid var(--neon-green); border-right: 2px solid var(--neon-green); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.f-box { background: var(--bg-grid); padding: 30px 20px; border: 1px solid rgba(0,255,102,0.3); text-align: center; transition: 0.3s; position: relative; overflow: hidden; }
.f-box::before { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 2px; background: var(--neon-green); transition: 0.5s; }
.f-box:hover::before { left: 100%; }
.f-box:hover { border-color: var(--neon-green); box-shadow: 0 0 20px var(--neon-green-dim); transform: translateY(-5px); }
.f-icon { width: 50px; height: 50px; margin: 0 auto 15px; filter: drop-shadow(0 0 5px var(--neon-green)); }
.f-icon img { filter: invert(60%) sepia(100%) saturate(300%) hue-rotate(85deg) brightness(100%) contrast(100%); }
.f-box h3 { font-size: 16px; font-weight: bold; color: #FFF; margin-bottom: 10px; }
.f-box p { font-size: 13px; color: var(--cyber-gray); }

/* 功能详情 */
.detail-item { display: flex; align-items: center; gap: 50px; margin-bottom: 80px; }
.detail-item:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text h3 { font-size: 32px; font-weight: bold; color: var(--neon-green); margin-bottom: 20px; }
.d-text p { font-size: 16px; color: #CCC; margin-bottom: 30px; line-height: 1.8; }
.d-data { display: inline-block; padding: 5px 15px; border-left: 3px solid var(--neon-green); background: var(--neon-green-dim); color: var(--neon-green); font-weight: bold; font-family: monospace; letter-spacing: 1px; }
.d-visual { flex: 1; border: 1px solid var(--neon-green); padding: 10px; position: relative; background: var(--bg-grid); }
.d-visual::after { content: 'SYSTEM ACTIVE'; position: absolute; top: 10px; right: 10px; background: var(--neon-green); color: #000; font-size: 10px; padding: 2px 6px; font-weight: bold; }

/* 浏览器对比 */
.compare-box { padding: 30px; border: 1px solid var(--neon-green); background: rgba(0, 0, 0, 0.6); position: relative; }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 15px; border-bottom: 1px solid rgba(0,255,102,0.2); }
.compare-table th { color: var(--neon-green); font-size: 14px; text-transform: uppercase; letter-spacing: 2px; }
.compare-table td { color: #AAA; }
.compare-table .hl { color: #FFF; font-weight: bold; background: rgba(0,255,102,0.15); border-left: 2px solid var(--neon-green); text-shadow: 0 0 5px var(--neon-green); }

/* 数据背书 */
.data-sec { background: rgba(0,255,102,0.05); border-top: 1px solid var(--neon-green); border-bottom: 1px solid var(--neon-green); padding: 60px 0; margin: 40px 0; position: relative; }
.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: 50px; font-weight: bold; color: var(--neon-green); margin-bottom: 10px; text-shadow: 0 0 15px var(--neon-green); }
.data-item p { font-size: 14px; color: #FFF; text-transform: uppercase; letter-spacing: 2px; }

/* 下载版本区 */
.dl-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { background: var(--bg-grid); padding: 40px 30px; border: 1px solid rgba(0,255,102,0.3); text-align: center; position: relative; transition: 0.3s; }
.dl-card:hover { border-color: var(--neon-green); box-shadow: inset 0 0 20px var(--neon-green-dim); }
.dl-card h3 { font-size: 22px; font-weight: bold; color: #FFF; margin-bottom: 15px; }
.dl-card p { font-size: 14px; color: var(--cyber-gray); margin-bottom: 30px; height: 60px; }
.dl-card .btn { width: 100%; }
.dl-card.pro { border-color: var(--neon-green); background: rgba(0,255,102,0.05); box-shadow: 0 0 20px var(--neon-green-dim); }
.dl-card.pro h3 { color: var(--neon-green); text-shadow: 0 0 8px var(--neon-green); }

/* FAQ */
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-item { margin-bottom: 20px; padding: 20px; border: 1px solid rgba(0,255,102,0.2); background: rgba(0,0,0,0.5); transition: 0.3s; }
.faq-item:hover { border-color: var(--neon-green); background: rgba(0,255,102,0.05); }
.faq-item h4 { font-size: 16px; font-weight: bold; color: var(--neon-green); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.faq-item h4::before { content: '[?]'; }
.faq-item p { font-size: 14px; color: #CCC; padding-left: 30px; }

/* Footer */
.footer { border-top: 1px dashed var(--neon-green); padding: 30px 20px; text-align: center; margin-top: 60px; background: #000; }
.footer p { color: var(--cyber-gray); font-size: 13px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; }