:root {
    --brand-dark: #004d26;
    --brand-main: #00a854;
    --brand-light: #e6f7ef;
    --brand-gradient: linear-gradient(135deg, #004d26 0%, #00a854 100%);
    --text-dark: #2c3e50;
    --text-muted: #64748b;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 10px 30px rgba(0, 168, 84, 0.15);
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* 导航 */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.logo { font-size: 24px; font-weight: 800; color: var(--brand-main); display: flex; align-items: center; gap: 8px; }
.logo::before { content: ''; display: inline-block; width: 24px; height: 24px; background: var(--brand-gradient); border-radius: 50%; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-weight: 500; font-size: 15px; color: var(--text-dark); }
.nav-links a:hover, .nav-links a.active { color: var(--brand-main); }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 32px; border-radius: 30px; font-weight: 600; font-size: 16px;
    cursor: pointer; border: none; transition: 0.3s;
}
.btn-primary { background: #fff; color: var(--brand-main); box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-green { background: var(--brand-gradient); color: #fff; box-shadow: var(--shadow); }
.btn-green:hover { transform: translateY(-2px); box-shadow: 0 15px 35px rgba(0, 168, 84, 0.3); }
.btn-green-outline { background: #fff; color: var(--brand-main); border: 1px solid var(--brand-main); }

/* Hero区 */
.hero {
    background: var(--brand-gradient);
    padding: 100px 0;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 100px;
    background: linear-gradient(to top, #fff, transparent);
}
.hero h1 { font-size: 56px; font-weight: 900; margin-bottom: 20px; letter-spacing: 1px; }
.hero p { font-size: 20px; opacity: 0.9; margin-bottom: 40px; }
.hero-btns { display: flex; justify-content: center; gap: 20px; margin-bottom: 60px; position: relative; z-index: 2; }
.browser-window {
    max-width: 960px; margin: 0 auto; position: relative; z-index: 2;
    background: #fff; border-radius: 12px; padding: 6px;
    box-shadow: 0 30px 60px rgba(0, 77, 38, 0.4);
    border: 1px solid rgba(255,255,255,0.3);
}

/* 模块通用 */
section { padding: 80px 0; }
.sec-title { text-align: center; font-size: 36px; font-weight: bold; color: var(--text-dark); margin-bottom: 60px; }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.f-card {
    background: var(--brand-light); border-radius: 12px; padding: 30px 20px;
    text-align: center; transition: 0.3s; border: 1px solid transparent;
}
.f-card:hover { background: #fff; border-color: var(--brand-main); transform: translateY(-5px); box-shadow: var(--shadow); }
.f-card img { width: 56px; height: 56px; margin: 0 auto 16px; }
.f-card h3 { font-size: 18px; color: var(--brand-dark); margin-bottom: 10px; font-weight: bold; }
.f-card p { font-size: 14px; color: var(--text-muted); }

/* 详情 */
.detail-item { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; }
.detail-item:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text h3 { font-size: 30px; font-weight: bold; color: var(--brand-dark); margin-bottom: 20px; }
.d-text p { font-size: 16px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.d-tag { display: inline-block; background: var(--brand-light); color: var(--brand-dark); font-weight: bold; padding: 6px 16px; border-radius: 20px; font-size: 14px; }
.d-img { flex: 1; border-radius: 12px; box-shadow: var(--shadow); border: 1px solid var(--border); padding: 5px; background: #fff; }

/* 对比 */
.compare-box { background: #fff; border-radius: 16px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); border: 1px solid var(--border); padding: 40px; }
.compare-tb { width: 100%; border-collapse: collapse; text-align: center; }
.compare-tb th, .compare-tb td { padding: 20px; border-bottom: 1px solid var(--border); }
.compare-tb th { color: var(--text-muted); font-weight: 600; font-size: 16px; }
.compare-tb .hl { color: var(--brand-main); font-weight: bold; font-size: 18px; background: var(--brand-light); border-radius: 8px; }

/* 下载版本 */
.v-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.v-card {
    background: #fff; border: 1px solid var(--border); padding: 40px 30px;
    border-radius: 16px; text-align: center; transition: 0.3s;
}
.v-card:hover { border-color: var(--brand-main); box-shadow: var(--shadow); transform: translateY(-5px); }
.v-card.rec { border: 2px solid var(--brand-main); position: relative; }
.v-card.rec::after { content: '官方推荐'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--brand-gradient); color: #fff; padding: 4px 16px; border-radius: 20px; font-size: 12px; font-weight: bold; }
.v-card h3 { font-size: 24px; font-weight: bold; color: var(--text-dark); margin-bottom: 15px; }
.v-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; height: 42px; }

/* 数据展示 */
.data-sec { background: var(--brand-light); text-align: center; padding: 60px 0; }
.data-flex { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 30px; }
.data-item h4 { font-size: 48px; font-weight: 900; color: var(--brand-dark); margin-bottom: 5px; }
.data-item p { font-size: 16px; color: var(--brand-main); font-weight: bold; }

/* FAQ */
.faq-wrap { column-count: 2; column-gap: 40px; max-width: 1000px; margin: 0 auto; }
.faq-box { background: #fff; border: 1px solid var(--border); padding: 25px; border-radius: 12px; margin-bottom: 24px; break-inside: avoid; border-left: 4px solid var(--brand-main); }
.faq-box h4 { font-size: 16px; font-weight: bold; color: var(--text-dark); margin-bottom: 12px; }
.faq-box p { font-size: 14px; color: var(--text-muted); }

footer { background: #f8fafc; text-align: center; padding: 40px 0; color: var(--text-muted); font-size: 14px; border-top: 1px solid var(--border); }