:root {
    --bg-dark: #050B08; /* 极暗绿底色 */
    --bg-card: #0A1510;
    --neon-green: #00FF7F; /* 绿色光幕主色 */
    --neon-dim: rgba(0, 255, 127, 0.2);
    --neon-strong: rgba(0, 255, 127, 0.6);
    --text-main: #E8F5E9;
    --text-muted: #8E9C95;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; display: block; border-radius: 8px; }
ul { list-style: none; }

/* 绿色光幕背景效果 */
.light-curtain-bg { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; background: radial-gradient(circle at 50% -20%, var(--neon-dim) 0%, transparent 60%); }
.aurora { position: absolute; top: -10%; left: 0; width: 100%; height: 50vh; background: linear-gradient(180deg, var(--neon-dim), transparent); opacity: 0.5; filter: blur(50px); animation: wave 8s infinite alternate; }
@keyframes wave { 0% { transform: translateY(0) scaleX(1); opacity: 0.3; } 100% { transform: translateY(20px) scaleX(1.1); opacity: 0.6; } }

/* 导航 */
.header { background: rgba(5, 11, 8, 0.8); border-bottom: 1px solid var(--neon-dim); position: sticky; top: 0; z-index: 1000; backdrop-filter: blur(12px); box-shadow: 0 4px 20px rgba(0,255,127,0.1); }
.nav-wrap { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 80px; padding: 0 20px; }
.logo { font-size: 24px; font-weight: 900; color: #FFF; display: flex; align-items: center; gap: 12px; letter-spacing: 1px; }
.logo img { width: 36px; height: 36px; filter: drop-shadow(0 0 10px var(--neon-green)); }
.logo span { color: var(--neon-green); text-shadow: 0 0 15px var(--neon-green); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 15px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; position: relative; padding: 10px 0; }
.nav-links a:hover, .nav-links a.active { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-strong); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px; background: var(--neon-green); box-shadow: 0 0 10px var(--neon-green); transition: 0.3s; transform: translateX(-50%); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; position: relative; z-index: 2; }

/* 光幕官方按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 16px 40px; border-radius: 4px; font-size: 18px; font-weight: bold; cursor: pointer; transition: 0.3s; position: relative; overflow: hidden; letter-spacing: 1px; }
.btn-primary { background: transparent; color: var(--neon-green); border: 1px solid var(--neon-green); box-shadow: inset 0 0 20px var(--neon-dim), 0 0 20px var(--neon-dim); }
.btn-primary::before { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%; background: linear-gradient(90deg, transparent, rgba(0,255,127,0.4), transparent); transform: skewX(-20deg); animation: btnShine 3s infinite; }
@keyframes btnShine { 0% { left: -100%; } 20% { left: 200%; } 100% { left: 200%; } }
.btn-primary:hover { background: var(--neon-green); color: #000; box-shadow: 0 0 30px var(--neon-strong); }
.btn-outline { background: rgba(0, 0, 0, 0.5); color: #FFF; border: 1px solid var(--text-muted); }
.btn-outline:hover { border-color: var(--neon-green); color: var(--neon-green); box-shadow: inset 0 0 10px var(--neon-dim); }

/* 首屏 Hero */
.hero { display: flex; align-items: center; gap: 60px; padding: 100px 20px 120px; max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
.hero-content { flex: 1.1; }
.tag-light { display: inline-block; background: var(--neon-dim); border: 1px solid var(--neon-strong); color: var(--neon-green); padding: 6px 18px; border-radius: 30px; font-size: 14px; font-weight: bold; margin-bottom: 20px; text-shadow: 0 0 5px var(--neon-green); box-shadow: 0 0 10px var(--neon-dim); }
.hero-content h1 { font-size: 60px; font-weight: 900; color: #FFF; margin-bottom: 15px; line-height: 1.2; letter-spacing: 2px; }
.hero-content h1 .hl { color: var(--neon-green); text-shadow: 0 0 20px var(--neon-green); }
.hero-content .subtitle { font-size: 24px; color: var(--text-main); font-weight: 500; margin-bottom: 30px; opacity: 0.9; }
.hero-content .desc { font-size: 16px; color: var(--text-muted); margin-bottom: 40px; line-height: 1.8; border-left: 2px solid var(--neon-green); padding-left: 15px; }
.hero-btns { display: flex; gap: 20px; }
.hero-visual { flex: 1; position: relative; }
/* 图片外圈光带环绕 */
.hero-visual::before { content: ''; position: absolute; top: -15px; left: -15px; right: -15px; bottom: -15px; border-radius: 12px; background: conic-gradient(from 0deg, transparent 70%, var(--neon-green) 100%); animation: rotateBorder 4s linear infinite; z-index: -1; }
.hero-visual::after { content: ''; position: absolute; inset: -15px; border-radius: 12px; background: var(--bg-card); z-index: -1; margin: 2px; }
@keyframes rotateBorder { 100% { transform: rotate(360deg); } }
.hero-visual img { border: 1px solid var(--neon-dim); border-radius: 10px; z-index: 2; position: relative; box-shadow: 0 0 40px rgba(0, 255, 127, 0.2); }

/* 模块标题 */
.sec-title { text-align: center; font-size: 36px; font-weight: 800; color: #FFF; margin-bottom: 60px; letter-spacing: 2px; }
.sec-title span { color: var(--neon-green); text-shadow: 0 0 15px var(--neon-strong); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.f-box { background: var(--bg-card); padding: 40px 20px; text-align: center; border-radius: 8px; border: 1px solid rgba(255,255,255,0.05); transition: 0.4s; position: relative; overflow: hidden; }
.f-box::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 0; height: 3px; background: var(--neon-green); transition: 0.4s; box-shadow: 0 0 10px var(--neon-green); }
.f-box:hover { border-color: var(--neon-dim); transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.5); background: linear-gradient(180deg, var(--neon-dim) 0%, var(--bg-card) 100%); }
.f-box:hover::before { width: 100%; }
.f-box img { width: 48px; height: 48px; margin: 0 auto 20px; filter: drop-shadow(0 0 8px var(--neon-green)); }
.f-box h3 { font-size: 18px; font-weight: bold; color: #FFF; margin-bottom: 10px; }
.f-box p { font-size: 13px; color: var(--text-muted); }

/* 功能详情 (光幕卡片) */
.detail-box { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; background: var(--bg-card); border-radius: 12px; padding: 50px; border: 1px solid rgba(255,255,255,0.03); position: relative; }
.detail-box::before { content: ''; position: absolute; left: 0; top: 20%; height: 60%; width: 4px; background: var(--neon-green); box-shadow: 0 0 15px var(--neon-green); border-radius: 0 4px 4px 0; }
.detail-box:nth-child(even) { flex-direction: row-reverse; }
.detail-box:nth-child(even)::before { left: auto; right: 0; border-radius: 4px 0 0 4px; }
.d-text { flex: 1; }
.d-text h3 { font-size: 30px; font-weight: bold; color: #FFF; margin-bottom: 20px; }
.d-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.8; }
.d-data { display: inline-block; padding: 8px 20px; border: 1px solid var(--neon-green); color: var(--neon-green); border-radius: 30px; font-weight: bold; box-shadow: inset 0 0 10px var(--neon-dim); }
.d-visual { flex: 1.2; position: relative; }
.d-visual img { border-radius: 8px; border: 1px solid var(--neon-dim); box-shadow: 0 10px 30px rgba(0,0,0,0.5); opacity: 0.9; transition: 0.4s; }
.d-visual:hover img { opacity: 1; box-shadow: 0 0 30px var(--neon-strong); }

/* 浏览器对比 */
.compare-box { background: var(--bg-card); border-radius: 12px; padding: 40px; border: 1px solid rgba(255,255,255,0.05); }
.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 { color: var(--neon-green); font-size: 14px; font-weight: bold; text-transform: uppercase; background: rgba(0, 255, 127, 0.05); border-radius: 4px; }
.compare-table td { font-size: 15px; color: var(--text-main); }
.compare-table .hl { color: #FFF; font-weight: bold; text-shadow: 0 0 8px var(--neon-green); border-left: 2px solid var(--neon-green); background: linear-gradient(90deg, var(--neon-dim), transparent); }
.compare-table tr:last-child td { border-bottom: none; }

/* 下载版本区 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05); padding: 50px 30px; text-align: center; border-radius: 12px; transition: 0.4s; position: relative; }
.dl-card:hover { border-color: var(--neon-green); box-shadow: 0 10px 40px rgba(0,255,127,0.1); transform: translateY(-10px); }
.dl-card.rec { border: 2px solid var(--neon-green); box-shadow: inset 0 0 30px rgba(0,255,127,0.05), 0 10px 30px rgba(0,0,0,0.5); }
.dl-card.rec::after { content: '官方主推'; position: absolute; top: 0; left: 50%; transform: translateX(-50%); background: var(--neon-green); color: #000; padding: 4px 20px; font-size: 13px; font-weight: bold; border-radius: 0 0 8px 8px; box-shadow: 0 0 10px var(--neon-green); }
.dl-card h3 { font-size: 24px; font-weight: 800; color: #FFF; margin-bottom: 15px; }
.dl-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 40px; height: 50px; }
.dl-card .btn { width: 100%; }

/* 数据背书 */
.data-sec { background: var(--bg-card); padding: 80px 20px; border-top: 1px solid var(--neon-dim); border-bottom: 1px solid var(--neon-dim); margin: 80px 0; position: relative; overflow: hidden; }
.data-sec::before { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%; background: linear-gradient(90deg, transparent, var(--neon-dim), transparent); animation: passLight 5s infinite; }
@keyframes passLight { 100% { left: 200%; } }
.data-inner { max-width: 1000px; margin: 0 auto; display: flex; justify-content: space-around; position: relative; z-index: 2; }
.data-item { text-align: center; }
.data-item h4 { font-size: 56px; font-weight: 900; color: var(--neon-green); margin-bottom: 5px; text-shadow: 0 0 20px var(--neon-strong); line-height: 1; }
.data-item p { font-size: 16px; font-weight: bold; color: #FFF; letter-spacing: 1px; }

/* FAQ */
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 15px; }
.faq-box { background: var(--bg-card); padding: 30px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.03); transition: 0.3s; }
.faq-box:hover { border-color: var(--neon-dim); background: rgba(0,255,127,0.02); }
.faq-box h4 { font-size: 17px; font-weight: bold; color: #FFF; margin-bottom: 12px; display: flex; align-items: center; gap: 12px; }
.faq-box h4::before { content: ''; display: inline-block; width: 6px; height: 16px; background: var(--neon-green); box-shadow: 0 0 5px var(--neon-green); }
.faq-box p { font-size: 15px; color: var(--text-muted); line-height: 1.7; padding-left: 18px; }

/* Footer */
.footer { border-top: 1px solid rgba(255,255,255,0.05); text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 14px; margin-top: 80px; }