:root{--blue:#3f8fe5;--deep:#245f9e;--ink:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--soft:#f5f8fc;--soft2:#edf4fb;--foot:#163f69;--shadow:0 16px 42px rgba(42,93,145,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px/1.75 Arial,"Microsoft YaHei",sans-serif;color:var(--text);background:#fff;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{width:min(1180px,calc(100% - 40px));margin:auto}.security-strip{background:#edf4fb;color:#365b7d;text-align:center;padding:6px 16px;font-size:13px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.header-inner{height:72px;display:flex;align-items:center;gap:28px}.brand img{width:142px;max-height:42px;object-fit:contain}.desktop-nav{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}.desktop-nav>a,.nav-trigger{border:0;background:transparent;padding:12px 14px;font:inherit;color:var(--ink);cursor:pointer}.nav-item{position:relative}.mega{display:none;position:absolute;top:52px;left:50%;transform:translateX(-50%);width:620px;background:white;border:1px solid var(--line);box-shadow:var(--shadow);padding:24px;border-radius:16px;grid-template-columns:200px 1fr;gap:24px}.nav-item.open .mega{display:grid}.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}.mega-links a{padding:8px 10px;background:var(--soft);border-radius:8px}.header-actions{display:flex;gap:10px;align-items:center}.download-btn,.btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 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article{padding:16px 0;border-bottom:1px solid var(--line)}.tag{font-size:12px;color:var(--blue);font-weight:700}.compare{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.app-pane{display:grid;grid-template-columns:.7fr 1fr;gap:24px;align-items:center;background:var(--soft);padding:28px;border-radius:18px}.web-pane{padding:28px;border:1px solid var(--line);border-radius:18px}.stakes{display:grid;grid-template-columns:1fr 1fr;gap:28px}.timeline{border-left:2px solid var(--line);margin-left:9px}.timeline article{position:relative;padding:0 0 26px 28px}.timeline article:before{content:"";position:absolute;left:-7px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--blue)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;text-align:left;padding:18px 0;border:0;background:transparent;color:var(--ink);font:600 18px/1.5 inherit}.faq-a{padding:0 0 18px}.cta{background:var(--soft2);border-radius:24px;padding:42px;text-align:center}.page-hero{padding:58px 0 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