:root {
    --brand-green: #00C853; /* 360核心绿 */
    --brand-green-hover: #00E676;
    --brand-green-light: #E8F5E9;
    --text-main: #2D3748;
    --text-muted: #718096;
    --bg-white: #FFFFFF;
    --bg-gray: #F7FAFC;
    --border-color: #E2E8F0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Microsoft YaHei", sans-serif; background-color: var(--bg-white); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.2s ease; }
img { max-width: 100%; display: block; border-radius: 12px; }

/* 导航 */
.header { background: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05); }
.nav-wrap { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; }
.logo { font-size: 22px; font-weight: 700; color: var(--text-main); display: flex; align-items: center; gap: 12px; }
.logo img { width: 36px; height: 36px; border-radius: 8px; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: 16px; font-weight: 500; color: var(--text-muted); position: relative; }
.nav-links a:hover, .nav-links a.active { color: var(--brand-green); }
.nav-links a.active::after { content: ''; position: absolute; bottom: -24px; left: 0; width: 100%; height: 3px; background: var(--brand-green); border-radius: 3px 3px 0 0; }

/* 大按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 16px 40px; border-radius: 50px; font-size: 18px; font-weight: 600; cursor: pointer; transition: 0.3s; box-shadow: 0 4px 14px rgba(0, 200, 83, 0.15); }
.btn-primary { background: var(--brand-green); color: #FFF; border: none; }
.btn-primary:hover { background: var(--brand-green-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 200, 83, 0.3); }
.btn-outline { background: var(--bg-white); color: var(--brand-green); border: 2px solid var(--brand-green); box-shadow: none; }
.btn-outline:hover { background: var(--brand-green-light); transform: translateY(-2px); }

/* 容器与标题 */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 24px; }
.sec-title { text-align: center; font-size: 36px; font-weight: 800; color: var(--text-main); margin-bottom: 16px; letter-spacing: -0.5px; }
.sec-subtitle { text-align: center; font-size: 18px; color: var(--text-muted); margin-bottom: 60px; max-width: 800px; margin-left: auto; margin-right: auto; }

/* Hero区：极简白绿 */
.hero { text-align: center; padding: 100px 24px 80px; background: linear-gradient(180deg, var(--brand-green-light) 0%, var(--bg-white) 100%); }
.hero h1 { font-size: 56px; font-weight: 800; margin-bottom: 24px; color: var(--text-main); letter-spacing: -1px; }
.hero .subtitle { font-size: 22px; color: var(--brand-green); margin-bottom: 48px; font-weight: 500; }
.hero-btns { display: flex; justify-content: center; gap: 24px; margin-bottom: 60px; }
.hero-visual { max-width: 900px; margin: 0 auto; box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1); border-radius: 12px; overflow: hidden; border: 1px solid var(--border-color); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.f-box { background: var(--bg-white); padding: 40px 24px; border-radius: 16px; border: 1px solid var(--border-color); text-align: center; transition: 0.3s; }
.f-box:hover { border-color: var(--brand-green); box-shadow: 0 10px 30px rgba(0, 200, 83, 0.05); transform: translateY(-5px); }
.f-icon { width: 64px; height: 64px; margin: 0 auto 20px; background: var(--brand-green-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; padding: 12px; }
.f-box h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
.f-box p { font-size: 14px; color: var(--text-muted); }

/* 功能详情 - 极简排版 */
.detail-item { display: flex; align-items: center; gap: 80px; margin-bottom: 100px; }
.detail-item: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); }
.d-text p { font-size: 18px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
.d-data { display: inline-block; padding: 10px 24px; background: var(--brand-green-light); color: var(--brand-green); border-radius: 50px; font-weight: 700; font-size: 16px; }
.d-visual { flex: 1; position: relative; }
.d-visual img { box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1); border: 1px solid var(--border-color); }

/* 数据背书 */
.data-sec { background: var(--bg-gray); padding: 80px 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.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: 800; color: var(--brand-green); margin-bottom: 12px; line-height: 1; }
.data-item p { font-size: 16px; color: var(--text-muted); font-weight: 500; }

/* 浏览器对比 */
.compare-box { background: var(--bg-white); border-radius: 16px; border: 1px solid var(--border-color); overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 24px 30px; border-bottom: 1px solid var(--border-color); }
.compare-table th { font-weight: 700; color: var(--text-muted); background: var(--bg-gray); font-size: 15px; }
.compare-table td { font-size: 16px; font-weight: 500; }
.compare-table .hl { color: var(--brand-green); font-weight: 700; background: var(--brand-green-light); }

/* 下载版本区 */
.dl-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { background: var(--bg-white); padding: 48px 32px; border-radius: 16px; border: 1px solid var(--border-color); text-align: center; transition: 0.3s; }
.dl-card:hover { border-color: var(--brand-green); box-shadow: 0 20px 40px rgba(0, 200, 83, 0.08); transform: translateY(-5px); }
.dl-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.dl-card p { font-size: 15px; color: var(--text-muted); margin-bottom: 40px; height: 66px; }
.dl-card .btn { width: 100%; }
.dl-card.pro { background: var(--brand-green-light); border-color: var(--brand-green); }
.dl-card.pro h3 { color: var(--brand-green); }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { padding: 30px 0; border-bottom: 1px solid var(--border-color); }
.faq-item h4 { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.faq-item h4::before { content: 'Q'; color: var(--brand-green); font-size: 24px; }
.faq-item p { font-size: 16px; color: var(--text-muted); line-height: 1.7; padding-left: 32px; }

/* Footer */
.footer { background: var(--bg-gray); padding: 60px 24px; text-align: center; color: var(--text-muted); border-top: 1px solid var(--border-color); }