:root {
    --bg-white: #FFFFFF;
    --bg-gray: #F7F9FA;
    --brand-green-dark: #008838;
    --brand-green: #00B14F;
    --brand-green-light: #E5F7ED;
    --text-dark: #1A1A1A;
    --text-body: #555555;
    --text-muted: #999999;
    --shadow-large: 0 20px 50px rgba(0, 177, 79, 0.15);
    --shadow-soft: 0 10px 30px rgba(0,0,0,0.05);
}

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

/* 导航 */
.header { background: rgba(0, 136, 56, 0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(255,255,255,0.1); }
.nav-wrap { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 80px; padding: 0 40px; }
.logo { font-size: 26px; font-weight: 800; color: #FFF; display: flex; align-items: center; gap: 12px; }
.logo img { width: 36px; height: 36px; background: #FFF; border-radius: 8px; padding: 2px; }
.nav-links { display: flex; gap: 40px; }
.nav-links a { font-size: 16px; font-weight: 600; color: rgba(255,255,255,0.8); transition: 0.3s; }
.nav-links a:hover, .nav-links a.active { color: #FFF; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 18px 46px; border-radius: 4px; font-size: 18px; font-weight: 800; cursor: pointer; transition: 0.3s; letter-spacing: 1px; }
.btn-primary { background: #FFF; color: var(--brand-green-dark); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.btn-primary:hover { background: var(--bg-gray); transform: translateY(-2px); box-shadow: 0 15px 30px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: #FFF; border: 2px solid #FFF; }
.btn-outline:hover { background: rgba(255,255,255,0.1); }
.btn-dark { background: var(--brand-green); color: #FFF; }
.btn-dark:hover { background: var(--brand-green-dark); }
.btn-dark-outline { background: transparent; color: var(--brand-green); border: 2px solid var(--brand-green); }

/* 超宽Banner区 (Hero) */
.hero-banner { width: 100vw; background: linear-gradient(135deg, var(--brand-green-dark) 0%, var(--brand-green) 100%); padding: 100px 0; overflow: hidden; position: relative; }
.hero-wrap { max-width: 1400px; margin: 0 auto; padding: 0 40px; display: flex; align-items: center; justify-content: space-between; gap: 60px; position: relative; z-index: 10; }
.hero-text { flex: 1; color: #FFF; max-width: 600px; }
.hero-tag { display: inline-block; background: rgba(255,255,255,0.2); padding: 6px 16px; border-radius: 20px; font-size: 14px; font-weight: bold; margin-bottom: 24px; border: 1px solid rgba(255,255,255,0.3); }
.hero-text h1 { font-size: 64px; font-weight: 900; margin-bottom: 20px; line-height: 1.1; letter-spacing: -1px; }
.hero-text .subtitle { font-size: 24px; opacity: 0.9; margin-bottom: 50px; }
.hero-btns { display: flex; gap: 20px; }
.hero-image { flex: 1.2; position: relative; }
/* 大产品图超宽展现 */
.hero-image img { width: 130%; max-width: none; border-radius: 12px; box-shadow: var(--shadow-large); transform: perspective(1000px) rotateY(-10deg) translateX(50px); transition: 0.5s ease-out; border: 4px solid rgba(255,255,255,0.2); }
.hero-banner:hover .hero-image img { transform: perspective(1000px) rotateY(0deg) translateX(0); }

/* 宽屏分区标题 */
.wide-section { width: 100vw; padding: 100px 0; }
.bg-light { background-color: var(--bg-gray); }
.inner-wrap { max-width: 1400px; margin: 0 auto; padding: 0 40px; }
.sec-title { font-size: 40px; font-weight: 900; color: var(--text-dark); margin-bottom: 60px; text-align: center; }

/* 核心卖点 (横向排列) */
.feature-flex { display: flex; justify-content: space-between; gap: 30px; }
.f-card { flex: 1; background: #FFF; padding: 40px 30px; border-radius: 12px; box-shadow: var(--shadow-soft); text-align: center; transition: 0.3s; border-bottom: 4px solid transparent; }
.f-card:hover { transform: translateY(-10px); border-bottom-color: var(--brand-green); }
.f-card img { width: 64px; height: 64px; margin: 0 auto 20px; }
.f-card h3 { font-size: 20px; font-weight: 800; color: var(--text-dark); margin-bottom: 12px; }
.f-card p { font-size: 15px; color: var(--text-body); }

/* 功能详情 (横幅构图) */
.detail-banner { display: flex; align-items: center; gap: 80px; margin-bottom: 80px; background: #FFF; border-radius: 20px; padding: 60px; box-shadow: var(--shadow-soft); border-left: 8px solid var(--brand-green); }
.detail-banner:nth-child(even) { flex-direction: row-reverse; border-left: none; border-right: 8px solid var(--brand-green-dark); }
.d-content { flex: 1; }
.d-tag { font-size: 14px; font-weight: bold; color: var(--brand-green); text-transform: uppercase; margin-bottom: 15px; display: block; letter-spacing: 2px; }
.d-content h3 { font-size: 36px; font-weight: 900; color: var(--text-dark); margin-bottom: 24px; line-height: 1.2; }
.d-content p { font-size: 18px; line-height: 1.8; margin-bottom: 30px; color: var(--text-body); }
.d-stat { display: inline-block; background: var(--brand-green-light); color: var(--brand-green-dark); padding: 12px 24px; font-size: 20px; font-weight: 800; border-radius: 8px; }
.d-visual { flex: 1.2; }
.d-visual img { border-radius: 12px; box-shadow: var(--shadow-large); }

/* 对比横幅 */
.compare-banner { background: #FFF; padding: 50px; border-radius: 20px; box-shadow: var(--shadow-soft); }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 25px; border-bottom: 1px solid var(--border-soft); }
.compare-table th { font-size: 18px; font-weight: 800; color: var(--text-dark); background: var(--bg-gray); }
.compare-table td { font-size: 16px; color: var(--text-body); }
.compare-table .hl { background: var(--brand-green-light); color: var(--brand-green-dark); font-weight: 800; }
.compare-table tr:last-child td { border-bottom: none; }

/* 数据背书 (绿色超宽) */
.data-banner { width: 100vw; background: var(--brand-green-dark); color: #FFF; padding: 80px 0; background-image: radial-gradient(circle at 10% 50%, rgba(255,255,255,0.1) 0%, transparent 40%), radial-gradient(circle at 90% 50%, rgba(255,255,255,0.1) 0%, transparent 40%); }
.data-flex { max-width: 1400px; margin: 0 auto; display: flex; justify-content: space-around; text-align: center; }
.data-item h4 { font-size: 64px; font-weight: 900; margin-bottom: 10px; }
.data-item p { font-size: 18px; font-weight: 600; opacity: 0.9; }

/* 下载卡片横幅 */
.dl-flex { display: flex; gap: 40px; justify-content: space-between; }
.dl-card { flex: 1; background: #FFF; padding: 60px 40px; border-radius: 20px; text-align: center; box-shadow: var(--shadow-soft); transition: 0.3s; border: 2px solid transparent; }
.dl-card:hover { transform: translateY(-10px); border-color: var(--brand-green); box-shadow: var(--shadow-large); }
.dl-card.pro { background: var(--brand-green-light); border-color: var(--brand-green); }
.dl-card h3 { font-size: 30px; font-weight: 900; color: var(--text-dark); margin-bottom: 20px; }
.dl-card p { font-size: 16px; color: var(--text-body); margin-bottom: 40px; height: 48px; }
.dl-card .btn { width: 100%; font-size: 18px; }

/* FAQ宽屏排列 */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.faq-item { background: var(--bg-white); padding: 40px; border-radius: 16px; box-shadow: var(--shadow-soft); }
.faq-item h4 { font-size: 20px; font-weight: 800; color: var(--brand-green-dark); margin-bottom: 15px; display: flex; gap: 12px; }
.faq-item h4::before { content: "Q."; color: var(--brand-green); font-size: 24px; }
.faq-item p { font-size: 16px; color: var(--text-body); line-height: 1.8; }

/* Footer */
.footer { background: #111; color: #888; text-align: center; padding: 60px 20px; font-size: 15px; }