:root {
    --energy-green: #00FF55;
    --energy-dark: #00882D;
    --bg-dark: #050B08;
    --bg-panel: #0A140F;
    --text-main: #FFFFFF;
    --text-muted: #8F9A95;
    --border-color: rgba(0, 255, 85, 0.2);
    --glow-strong: 0 0 20px rgba(0, 255, 85, 0.5), 0 0 40px rgba(0, 255, 85, 0.2);
    --glow-soft: 0 0 10px rgba(0, 255, 85, 0.2);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: 'Segoe UI', "Microsoft YaHei", sans-serif;
    color: var(--text-main); 
    background-color: var(--bg-dark);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* 导航 */
.header { background: rgba(5, 11, 8, 0.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 70px; padding: 0 20px; }
.logo { font-size: 24px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; text-shadow: 0 0 10px var(--energy-green); }
.logo img { width: 32px; height: 32px; filter: drop-shadow(0 0 8px var(--energy-green)); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 15px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; transition: 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--energy-green); text-shadow: var(--glow-soft); }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 36px; border-radius: 50px; font-weight: 700; font-size: 16px;
    cursor: pointer; transition: 0.3s; text-transform: uppercase; letter-spacing: 1px;
    border: 2px solid transparent;
}
.btn-primary { 
    background: transparent; color: var(--energy-green); border-color: var(--energy-green);
    box-shadow: inset 0 0 10px rgba(0, 255, 85, 0.2), 0 0 10px rgba(0, 255, 85, 0.2);
}
.btn-primary:hover {
    background: var(--energy-green); color: #000; box-shadow: var(--glow-strong);
}
.btn-secondary { background: rgba(255,255,255,0.05); color: var(--text-main); border-color: rgba(255,255,255,0.2); }
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 10; }
.section { padding: 100px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.sec-title { font-size: 36px; font-weight: 800; text-align: center; margin-bottom: 50px; color: #fff; text-shadow: var(--glow-soft); }

/* 能量风首屏 Hero 区 */
.hero { 
    padding: 120px 0; text-align: center; position: relative; 
    overflow: hidden; background: radial-gradient(circle at center, rgba(0,255,85,0.05) 0%, transparent 60%);
}
/* 居中大能量环动画 */
.energy-ring {
    position: absolute; top: 40%; left: 50%; transform: translate(-50%, -50%);
    width: 600px; height: 600px; border-radius: 50%;
    border: 2px solid transparent; border-top-color: var(--energy-green); border-bottom-color: rgba(0,255,85,0.3);
    animation: spin 8s linear infinite; z-index: 0; pointer-events: none;
}
.energy-ring::before {
    content: ''; position: absolute; top: -10px; left: -10px; right: -10px; bottom: -10px; border-radius: 50%;
    border: 1px dashed rgba(0,255,85,0.5); animation: spin-reverse 12s linear infinite;
}
@keyframes spin { 100% { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes spin-reverse { 100% { transform: rotate(-360deg); } }

/* 速度光柱 */
.light-beam {
    position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 100%; height: 300px; background: linear-gradient(0deg, rgba(0,255,85,0.1) 0%, transparent 100%);
    z-index: 1; pointer-events: none;
}

.hero-content { position: relative; z-index: 10; max-width: 800px; margin: 0 auto; }
.hero-tag { display: inline-block; padding: 4px 16px; border: 1px solid var(--energy-green); color: var(--energy-green); border-radius: 20px; font-size: 13px; font-weight: 700; margin-bottom: 20px; text-shadow: var(--glow-soft); box-shadow: inset var(--glow-soft); }
.hero-title { font-size: 64px; font-weight: 900; line-height: 1.1; margin-bottom: 20px; color: #fff; text-shadow: 0 0 30px rgba(0,255,85,0.4); }
.hero-subtitle { font-size: 24px; font-weight: 600; color: var(--energy-green); margin-bottom: 30px; letter-spacing: 2px; }
.hero-btns { display: flex; justify-content: center; gap: 20px; margin-bottom: 60px; }

/* 产品图居中大展示 */
.hero-visual { position: relative; z-index: 20; max-width: 900px; margin: 0 auto; }
.hero-visual img { box-shadow: var(--glow-strong); border: 2px solid var(--border-color); border-radius: 12px; }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.f-card { background: var(--bg-panel); border: 1px solid var(--border-color); padding: 30px 20px; text-align: center; border-radius: 12px; transition: 0.3s; position: relative; overflow: hidden; }
.f-card::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(0,255,85,0.1) 0%, transparent 70%); opacity: 0; transition: 0.3s; }
.f-card:hover { transform: translateY(-5px); box-shadow: var(--glow-soft); border-color: var(--energy-green); }
.f-card:hover::after { opacity: 1; }
.f-card img { width: 50px; height: 50px; margin: 0 auto 15px; filter: drop-shadow(0 0 5px var(--energy-green)); position: relative; z-index: 2; }
.f-card h3 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; position: relative; z-index: 2; }
.f-card p { font-size: 13px; color: var(--text-muted); position: relative; z-index: 2; }

/* 功能详情 */
.detail-modules { display: flex; flex-direction: column; gap: 80px; }
.detail-row { display: flex; align-items: center; gap: 60px; }
.detail-row:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text h3 { font-size: 32px; font-weight: 800; margin-bottom: 20px; color: var(--text-main); display: flex; align-items: center; gap: 10px; }
.d-text h3::before { content: ''; display: inline-block; width: 8px; height: 24px; background: var(--energy-green); box-shadow: var(--glow-soft); }
.d-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.8; }
.d-data-wrap { background: rgba(0,255,85,0.05); border: 1px solid var(--border-color); padding: 15px 20px; border-radius: 8px; display: inline-block; }
.d-data-wrap span { font-size: 18px; font-weight: 700; color: var(--energy-green); text-shadow: var(--glow-soft); }
.d-img { flex: 1.2; position: relative; }
.d-img::before { content: ''; position: absolute; top: -10px; left: -10px; right: 10px; bottom: 10px; border: 2px solid var(--energy-green); border-radius: 12px; z-index: 0; opacity: 0.3; }
.d-img img { position: relative; z-index: 1; border-radius: 12px; border: 1px solid var(--border-color); box-shadow: var(--glow-soft); }

/* 浏览器对比 */
.compare-wrapper { background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 16px; padding: 2px; box-shadow: var(--glow-soft); }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 20px 25px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.compare-table th { font-weight: 700; color: var(--text-muted); text-transform: uppercase; font-size: 14px; }
.compare-table .hl { color: var(--energy-green); font-weight: 800; background: rgba(0,255,85,0.05); text-shadow: 0 0 5px rgba(0,255,85,0.3); border-left: 1px solid var(--border-color); border-right: 1px solid var(--border-color); }
.compare-table th.hl { border-top: 1px solid var(--border-color); border-radius: 8px 8px 0 0; }
.compare-table tr:last-child .hl { border-bottom: 1px solid var(--border-color); border-radius: 0 0 8px 8px; }

/* 下载版本区 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { background: var(--bg-panel); border: 1px solid var(--border-color); padding: 40px 30px; border-radius: 16px; text-align: center; transition: 0.3s; }
.dl-card:hover { transform: translateY(-5px); box-shadow: var(--glow-soft); border-color: var(--energy-green); }
.dl-card.rec { position: relative; border-color: var(--energy-green); box-shadow: inset 0 0 20px rgba(0,255,85,0.1), 0 0 20px rgba(0,255,85,0.2); }
.dl-card.rec::after { content: 'MAX ENERGY'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--energy-green); color: #000; font-size: 12px; font-weight: 900; padding: 4px 16px; border-radius: 20px; letter-spacing: 1px; box-shadow: var(--glow-soft); }
.dl-card h3 { font-size: 24px; font-weight: 800; margin-bottom: 15px; color: #fff; }
.dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; height: 42px; }
.dl-card .btn { width: 100%; }

/* 数据背书 */
.data-sec { background: var(--bg-panel); border: 1px solid var(--border-color); padding: 60px 0; border-radius: 16px; margin: 40px 0; position: relative; overflow: hidden; }
.data-sec::before { content: ''; position: absolute; left: -50%; top: -50%; width: 200%; height: 200%; background: conic-gradient(transparent, rgba(0,255,85,0.1), transparent 30%); animation: spin 4s linear infinite; z-index: 0; }
.data-flex { display: flex; justify-content: space-around; text-align: center; position: relative; z-index: 10; }
.data-item h4 { font-size: 48px; font-weight: 900; color: var(--energy-green); text-shadow: var(--glow-soft); margin-bottom: 10px; font-family: monospace; }
.data-item p { font-size: 15px; font-weight: 600; letter-spacing: 1px; }

/* FAQ */
.faq-wrap { display: flex; flex-direction: column; gap: 15px; max-width: 800px; margin: 0 auto; }
.faq-box { background: var(--bg-panel); border: 1px solid rgba(255,255,255,0.1); padding: 25px; border-radius: 8px; transition: 0.3s; border-left: 3px solid transparent; }
.faq-box:hover { background: rgba(0,255,85,0.02); border-left-color: var(--energy-green); }
.faq-box h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.faq-box p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

footer { text-align: center; padding: 40px 0; border-top: 1px solid rgba(255,255,255,0.05); color: var(--text-muted); font-size: 14px; background: #030605; }