:root{--green:#2fc487;--green-deep:#159b76;--ink:#111820;--muted:#64717b;--line:#e5ecef;--soft:#f7faf9;--white:#fff;--dark:#0a2035}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit}button,a{-webkit-tap-highlight-color:transparent}.container{width:min(1180px,calc(100% - 64px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}.nav-bar{height:78px;display:flex;align-items:center;gap:30px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:21px;font-weight:800;text-decoration:none}.brand img{width:37px;height:37px;object-fit:contain}.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}.nav-links a{color:#64717b;font-size:14px;font-weight:650;text-decoration:none}.nav-links 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ol{grid-template-columns:1fr}.steps-section li{max-width:520px;margin:auto}.platform-title{align-items:start;flex-direction:column;gap:15px}}@media(max-width:700px){.container{width:calc(100% - 32px)}.nav-bar{height:67px}.nav-links{position:absolute;top:67px;right:16px;left:16px;display:none;flex-direction:column;gap:0;padding:8px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 25px rgba(10,32,53,.12)}.nav-links.is-open{display:flex}.nav-links a{padding:10px 12px}.nav-download{display:none}.menu-toggle{display:block;margin-left:auto}.download-hero-layout{padding:45px 0 55px}.hero-benefits{gap:15px;font-size:14px}.hero-downloads{gap:4px}.hero-download-primary{min-width:188px;padding:12px 15px}.hero-download-icon{width:52px}.hero-download-icon small{font-size:9px}.clean-product-preview{min-height:340px}.preview-desktop{top:34px;width:88%}.preview-window-body{min-height:215px}.preview-phone{width:108px;height:222px;border-width:5px;padding:14px 7px 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