:root {
    --bg-main: #050505;
    --bg-card: #0f0f0f;
    --text-main: #e5e5e5;
    --text-muted: #888888;
    --primary: #00ff41; /* 极简黑绿风 - 荧光绿 */
    --primary-hover: #00cc33;
    --border-color: #1a1a1a;
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航栏 */
header {
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 100;
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: 1px; text-transform: uppercase; text-shadow: 0 0 10px rgba(0,255,65,0.4); }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: 14px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

/* 极速按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 32px; font-size: 16px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 2px; border-radius: 2px; cursor: pointer; transition: all 0.3s;
}
.btn-primary {
    background: var(--primary); color: #000;
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.4);
}
.btn-primary:hover {
    background: #00cc33; box-shadow: 0 0 25px rgba(0, 255, 65, 0.6);
}
.btn-outline {
    background: transparent; color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-outline:hover {
    background: rgba(0, 255, 65, 0.1); box-shadow: inset 0 0 10px rgba(0, 255, 65, 0.2);
}

/* Hero区 */
.hero { padding: 120px 0; text-align: center; border-bottom: 1px solid var(--border-color); background: radial-gradient(circle at 50% 0%, #112211 0%, var(--bg-main) 60%); }
.hero h1 { font-size: 56px; font-weight: 900; color: #fff; margin-bottom: 20px; letter-spacing: 2px; }
.hero h1 span { color: var(--primary); text-shadow: 0 0 20px rgba(0,255,65,0.4); }
.hero p { font-size: 20px; color: var(--text-muted); margin-bottom: 50px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-btns { display: flex; justify-content: center; gap: 20px; margin-bottom: 60px; }
.browser-img { max-width: 900px; margin: 0 auto; border: 1px solid var(--border-color); border-radius: 4px; box-shadow: 0 0 30px rgba(0, 255, 65, 0.1); }
.browser-img img { border-radius: 3px; }

/* 通用布局 */
section { padding: 100px 0; border-bottom: 1px solid var(--border-color); }
.section-title { font-size: 32px; font-weight: 800; color: #fff; text-align: center; margin-bottom: 60px; letter-spacing: 1px; text-transform: uppercase; }
.section-title span { color: var(--primary); }

/* 核心卖点 */
.grid-features { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.card { background: var(--bg-card); padding: 40px 24px; text-align: center; border: 1px solid var(--border-color); transition: 0.3s; }
.card:hover { border-color: var(--primary); transform: translateY(-5px); box-shadow: 0 5px 20px rgba(0,255,65,0.1); }
.card img { width: 48px; height: 48px; margin: 0 auto 20px; filter: grayscale(100%) brightness(200%) sepia(100%) hue-rotate(70deg) saturate(600%); }
.card h3 { font-size: 18px; color: var(--primary); margin-bottom: 12px; }
.card p { font-size: 14px; 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; }
.detail-text { flex: 1; }
.detail-text h3 { font-size: 28px; color: var(--primary); margin-bottom: 20px; font-weight: 700; }
.detail-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.8; }
.detail-img { flex: 1; border: 1px solid var(--border-color); padding: 10px; background: var(--bg-card); border-radius: 4px; }

/* 浏览器对比 */
.compare-table { width: 100%; border-collapse: collapse; text-align: center; background: var(--bg-card); }
.compare-table th, .compare-table td { padding: 20px; border-bottom: 1px solid var(--border-color); }
.compare-table th { color: #fff; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; background: #111; }
.compare-table .highlight { color: var(--primary); font-weight: 800; border-left: 1px solid var(--primary); border-right: 1px solid var(--primary); background: rgba(0, 255, 65, 0.05); }

/* 版本区 */
.version-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.v-box { padding: 50px 30px; background: var(--bg-card); border: 1px solid var(--border-color); text-align: center; transition: 0.3s; }
.v-box:hover { border-color: var(--primary); }
.v-box.active { border-color: var(--primary); box-shadow: 0 0 20px rgba(0, 255, 65, 0.15); }
.v-box h3 { font-size: 24px; color: #fff; margin-bottom: 15px; text-transform: uppercase; }
.v-box p { color: var(--text-muted); margin-bottom: 40px; height: 48px; }

/* 数据背书 */
.data-flex { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 40px; text-align: center; }
.data-item h4 { font-size: 56px; font-weight: 900; color: var(--primary); margin-bottom: 10px; font-family: monospace; text-shadow: 0 0 15px rgba(0,255,65,0.3); }
.data-item p { font-size: 16px; color: var(--text-main); text-transform: uppercase; letter-spacing: 1px; }

/* FAQ */
.faq-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.faq-card { background: var(--bg-card); padding: 24px; border-left: 2px solid var(--primary); border-top: 1px solid var(--border-color); border-right: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.faq-card h4 { font-size: 16px; color: #fff; margin-bottom: 10px; }
.faq-card p { font-size: 14px; color: var(--text-muted); }

footer { padding: 40px 0; text-align: center; color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }