:root {
    --brand-main: #00A65A; /* 360经典绿变种，更现代 */
    --brand-dark: #007A42;
    --brand-accent: #00D273;
    --text-hero: #0F172A;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --bg-white: #FFFFFF;
    --bg-gray: #F8FAFC;
    --border-color: #E2E8F0;
    --curve-color: rgba(0, 166, 90, 0.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary); 
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; border-radius: 12px; }

/* 导航 */
.header { background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 80px; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 24px; font-weight: 800; color: var(--text-hero); letter-spacing: -0.5px; }
.logo img { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 40px; }
.nav-links a { font-size: 16px; font-weight: 500; color: var(--text-secondary); transition: 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--brand-main); }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 16px 36px; border-radius: 50px; font-weight: 600; font-size: 18px;
    cursor: pointer; transition: 0.3s; border: 2px solid transparent;
}
.btn-primary { background: linear-gradient(135deg, var(--brand-accent) 0%, var(--brand-main) 100%); color: #fff; box-shadow: 0 10px 20px rgba(0, 166, 90, 0.3); }
.btn-primary:hover { box-shadow: 0 15px 30px rgba(0, 166, 90, 0.4); transform: translateY(-3px); }
.btn-outline { background: var(--bg-white); color: var(--brand-main); border-color: var(--brand-main); box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.btn-outline:hover { background: var(--brand-main); color: #fff; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 10; }

/* 科技曲线背景 Hero 区 */
.hero { 
    position: relative; padding: 120px 0 160px; text-align: center; 
    background-color: var(--bg-white); overflow: hidden;
}
.hero::before {
    content: ""; position: absolute; top: -50%; left: -20%; width: 140%; height: 200%;
    background: radial-gradient(circle at 50% 50%, var(--curve-color) 0%, transparent 60%);
    z-index: 0; pointer-events: none;
}
.hero::after {
    content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 400px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1440 320" xmlns="http://www.w3.org/2000/svg"><path fill="%2300A65A" fill-opacity="0.05" d="M0,224L60,213.3C120,203,240,181,360,181.3C480,181,600,203,720,224C840,245,960,267,1080,250.7C1200,235,1320,181,1380,154.7L1440,128L1440,320L1380,320C1320,320,1200,320,1080,320C960,320,840,320,720,320C600,320,480,320,360,320C240,320,120,320,60,320L0,320Z"></path><path fill="%2300A65A" fill-opacity="0.1" d="M0,96L80,122.7C160,149,320,203,480,213.3C640,224,800,192,960,170.7C1120,149,1280,139,1360,133.3L1440,128L1440,320L1360,320C1280,320,1120,320,960,320C800,320,640,320,480,320C320,320,160,320,80,320L0,320Z"></path></svg>') no-repeat bottom center;
    background-size: cover; z-index: 0; pointer-events: none;
}
.hero-content { position: relative; z-index: 10; max-width: 900px; margin: 0 auto; }
.hero-logo-big { width: 120px; height: 120px; margin: 0 auto 30px; filter: drop-shadow(0 20px 30px rgba(0, 166, 90, 0.3)); }
.hero-title { font-size: 72px; font-weight: 900; color: var(--text-hero); line-height: 1.1; margin-bottom: 20px; letter-spacing: -2px; }
.hero-title span { background: linear-gradient(135deg, var(--brand-accent) 0%, var(--brand-dark) 100%); -webkit-background-clip: text; color: transparent; }
.hero-subtitle { font-size: 28px; font-weight: 500; color: var(--text-secondary); margin-bottom: 40px; letter-spacing: 2px; }
.hero-btns { display: flex; justify-content: center; gap: 24px; margin-bottom: 60px; }
.hero-img-wrap { padding: 10px; background: #fff; border-radius: 20px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15); display: inline-block; }

.section { padding: 120px 0; }
.section-alt { background-color: var(--bg-gray); }
.sec-title { font-size: 42px; font-weight: 800; text-align: center; margin-bottom: 20px; color: var(--text-hero); letter-spacing: -1px; }
.sec-desc { font-size: 18px; text-align: center; color: var(--text-secondary); margin-bottom: 60px; max-width: 600px; margin-inline: auto; }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 30px; }
.f-card { text-align: center; }
.f-card img { width: 64px; height: 64px; margin: 0 auto 20px; background: var(--bg-white); padding: 12px; border-radius: 16px; box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.f-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text-hero); }
.f-card p { font-size: 14px; color: var(--text-secondary); }

/* 功能详情 */
.detail-modules { display: flex; flex-direction: column; gap: 100px; }
.detail-row { display: flex; align-items: center; gap: 80px; }
.detail-row:nth-child(even) { flex-direction: row-reverse; }
.d-text { flex: 1; }
.d-text .tag { display: inline-block; padding: 6px 16px; background: var(--curve-color); color: var(--brand-main); font-weight: 700; border-radius: 30px; margin-bottom: 20px; font-size: 14px; }
.d-text h3 { font-size: 36px; font-weight: 800; margin-bottom: 20px; color: var(--text-hero); line-height: 1.2; }
.d-text p { font-size: 18px; color: var(--text-secondary); margin-bottom: 30px; line-height: 1.7; }
.d-data-box { border-left: 4px solid var(--brand-main); padding-left: 20px; }
.d-data-box h4 { font-size: 24px; font-weight: 800; color: var(--brand-main); margin-bottom: 5px; }
.d-data-box span { font-size: 14px; color: var(--text-secondary); }
.d-img { flex: 1.2; }
.d-img img { box-shadow: 0 20px 40px rgba(0,0,0,0.1); border: 1px solid var(--border-color); }

/* 对比表格 */
.compare-box { background: var(--bg-white); border-radius: 20px; box-shadow: 0 20px 40px rgba(0,0,0,0.05); overflow: hidden; border: 1px solid var(--border-color); }
.compare-table { width: 100%; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 25px 30px; border-bottom: 1px solid var(--border-color); }
.compare-table th { background: #F1F5F9; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; font-size: 14px; }
.compare-table .hl { background: var(--curve-color); color: var(--brand-dark); font-weight: 800; font-size: 16px; }

/* 版本下载 */
.v-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.v-card { background: var(--bg-white); border: 1px solid var(--border-color); padding: 50px 40px; border-radius: 20px; text-align: center; transition: 0.3s; }
.v-card:hover { box-shadow: 0 20px 40px rgba(0,0,0,0.08); transform: translateY(-5px); }
.v-card.rec { border: 2px solid var(--brand-main); box-shadow: 0 20px 40px rgba(0, 166, 90, 0.15); transform: scale(1.05); }
.v-card.rec:hover { transform: scale(1.05) translateY(-5px); }
.v-card h3 { font-size: 28px; font-weight: 800; color: var(--text-hero); margin-bottom: 15px; }
.v-card p { font-size: 16px; color: var(--text-secondary); margin-bottom: 40px; height: 48px; }
.v-card .btn { width: 100%; }

/* 数据展示 */
.data-sec { background: var(--text-hero); color: #fff; padding: 80px 0; border-radius: 24px; position: relative; overflow: hidden; }
.data-sec::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="10" cy="50" r="40" fill="%2300A65A" fill-opacity="0.2"/></svg>') no-repeat center right; background-size: cover; pointer-events: none; }
.data-flex { display: flex; justify-content: space-around; position: relative; z-index: 10; text-align: center; }
.data-item h4 { font-size: 64px; font-weight: 900; margin-bottom: 10px; color: var(--brand-accent); letter-spacing: -2px; }
.data-item p { font-size: 18px; font-weight: 500; color: #CBD5E1; }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.faq-box { background: var(--bg-white); border: 1px solid var(--border-color); padding: 30px; border-radius: 16px; }
.faq-box h4 { font-size: 18px; font-weight: 700; color: var(--text-hero); margin-bottom: 12px; }
.faq-box p { font-size: 16px; color: var(--text-secondary); line-height: 1.7; }

footer { background: var(--bg-white); text-align: center; padding: 40px 0; color: var(--text-secondary); font-size: 15px; border-top: 1px solid var(--border-color); }