* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif; }
:root { --primary: #2d9f6e; --dark: #238a5e; --text: #1e3d2e; --muted: #6b7280; }
body { color: var(--text); line-height: 1.7; background: #fff; }
a { text-decoration: none; color: inherit; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.top { background: #fff; border-bottom: 1px solid #d5ebe0; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; }
.logo { font-weight: 800; font-size: 20px; color: var(--primary); }
.cta { background: var(--primary); color: #fff; padding: 9px 22px; border-radius: 22px; font-weight: 600; }
.cta:hover { background: var(--dark); }
.hero { background: linear-gradient(135deg, #2d9f6e, #238a5e); padding: 80px 0; text-align: center; }
.hero h1 { color: #fff; font-size: 38px; margin-bottom: 16px; }
.hero .sub { color: rgba(255,255,255,.92); font-size: 18px; margin-bottom: 30px; }
.hero .btn { display: inline-block; background: #fff; color: var(--primary); padding: 14px 36px; border-radius: 28px; font-weight: 700; font-size: 17px; }
.features, .dl, .seo-text { padding: 60px 0; }
.sec-title { text-align: center; font-size: 28px; margin-bottom: 40px; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.feat { background: #fff; padding: 28px 24px; border-radius: 12px; border: 1px solid #d5ebe0; }
.feat h3 { font-size: 19px; margin-bottom: 10px; color: var(--primary); }
.feat p { color: var(--muted); font-size: 15px; }
.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.dlc { background: #fff; border: 1px solid #d5ebe0; border-radius: 12px; padding: 26px 20px; text-align: center; }
.dlc h3 { font-size: 18px; margin-bottom: 6px; }
.dlc p { color: var(--muted); font-size: 14px; }
.seo-text p { color: var(--muted); font-size: 16px; line-height: 1.9; text-align: justify; text-indent: 2em; max-width: 800px; margin: 0 auto 18px; }
.page-head { padding: 50px 0 30px; text-align: center; }
.page-head h1 { font-size: 32px; margin-bottom: 10px; }
.page-head p { color: var(--muted); }
.faq { padding: 30px 20px 60px; max-width: 760px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid #d5ebe0; border-radius: 10px; padding: 18px 24px; margin-bottom: 14px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { color: var(--muted); margin-top: 12px; }
.foot { background: #238a5e; color: #ccc; padding: 40px 0; text-align: center; }
.foot .c { font-size: 13px; }
@media (max-width: 760px) { .hero h1 { font-size: 28px; } }