.lp4{--ink:#0b0b0c;--mut:#6b7280;--sub:#9aa0a6;--line:#ececf0;--fill:#f5f6f8;--blue:#1677ff;--blue-d:#0a5fe0;min-height:100vh;color:var(--ink);-webkit-font-smoothing:antialiased;background:#fff;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Segoe UI,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.5;position:relative;overflow-x:hidden}.lp4 *{box-sizing:border-box}.lp4-bg{pointer-events:none;z-index:0;background:radial-gradient(720px 460px at 88% -6%,#1677ff17,#0000 62%),radial-gradient(600px 380px at 6% 108%,#1677ff0b,#0000 60%);position:fixed;inset:0}.lp4-wrap{z-index:1;flex-direction:column;width:100%;max-width:1240px;min-height:100vh;margin:0 auto;padding:0 44px;display:flex;position:relative}.lp4-nav{border-bottom:1px solid #ececf0bf;flex-shrink:0;align-items:center;height:72px;display:flex}.lp4-brand{align-items:center;gap:10px;display:flex}.lp4-picon{border-radius:8px;width:32px;height:32px;display:block;box-shadow:0 4px 12px -6px #155dfc99}.lp4-wm{letter-spacing:.02em;color:var(--ink);font-size:17px;font-weight:800}.lp4-navlinks{gap:4px;margin-left:30px;display:flex}.lp4-navlinks a{color:#4a4d53;border-radius:9px;padding:8px 13px;font-size:13.5px;font-weight:600;text-decoration:none;transition:all .15s}.lp4-navlinks a.on{color:var(--ink);background:var(--fill)}.lp4-navlinks a:hover{color:var(--ink)}.lp4-navr{align-items:center;gap:10px;margin-left:auto;display:flex}.lp4-lnk{color:#3a3d42;cursor:pointer;background:0 0;border:0;border-radius:9px;padding:8px 14px;font-family:inherit;font-size:13.5px;font-weight:700;text-decoration:none;transition:all .15s}.lp4-lnk:hover{background:var(--fill);color:var(--ink)}.lp4-btn{cursor:pointer;white-space:nowrap;border:0;border-radius:999px;justify-content:center;align-items:center;gap:7px;font-family:inherit;font-weight:700;text-decoration:none;transition:all .18s;display:inline-flex}.lp4-btn-dark{background:var(--ink);color:#fff;padding:9.5px 20px;font-size:13.5px;box-shadow:0 8px 18px -10px #0b0b0c99}.lp4-btn-dark:hover{background:#232326;transform:translateY(-1px);box-shadow:0 12px 24px -10px #0b0b0cb3}.lp4-btn-dark:active{transform:translateY(0)}.lp4-hero{flex-direction:column;flex:1;padding:36px 0 120px;display:flex}.lp4-hero-head{text-align:center;justify-content:center;align-items:center;margin-bottom:48px;display:flex}.lp4-hero-h1{letter-spacing:-.02em;color:var(--ink);text-align:center;margin:0;font-size:clamp(28px,3.4vw,44px);font-weight:900;line-height:1.25}.lp4-text-blue{color:var(--blue);background:linear-gradient(135deg,#0052cc 0%,#1677ff 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;display:inline-block}.lp4-body-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);align-items:flex-start;gap:52px;width:100%;display:grid}.lp4-body-grid>*{min-width:0;max-width:100%}.lp4-feats{flex-direction:column;gap:10px;width:100%;max-width:480px;display:flex}.lp4-feat{cursor:pointer;box-sizing:border-box;border:1px solid #0000;border-radius:12px;width:100%;padding:10px 14px;transition:all .22s cubic-bezier(.16,1,.3,1);overflow:hidden}.lp4-feat:hover{background:#fafbfc;border-color:#edf0f5}.lp4-feat.on{background:#f8faff;border-color:#1677ff3d;box-shadow:0 4px 16px -6px #1677ff24}.lp4-feat-hdr{align-items:center;gap:10px;display:flex}.lp4-feat-num{color:#9aa0a6;letter-spacing:-.02em;flex-shrink:0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px;font-weight:800}.lp4-feat.on .lp4-feat-num{color:var(--blue)}.lp4-feat h4{letter-spacing:-.01em;color:#2c3038;margin:0;font-size:15px;font-weight:800;transition:color .2s}.lp4-feat.on h4{color:var(--ink)}.lp4-feat p{color:var(--mut);word-break:break-word;overflow-wrap:break-word;margin:4px 0 0 28px;font-size:12.5px;line-height:1.6}.lp4-visual{align-self:center;width:100%;position:relative}.lp4-screen{aspect-ratio:1400/996;background:#f8fafc;border:1px solid #e7e9ee;border-radius:16px;width:100%;position:relative;overflow:hidden;box-shadow:0 32px 64px -32px #0b0b0c52,0 2px 10px -4px #0b0b0c14}.lp4-screen img{object-fit:cover;object-position:top left;width:100%;height:100%;transition:opacity .35s;display:block}.lp4-dots{justify-content:center;align-items:center;gap:8px;margin-top:14px;display:none}.lp4-dot{cursor:pointer;background:#d4d4d8;border:0;border-radius:999px;width:6px;height:6px;padding:0;transition:all .25s}.lp4-dot.on{background:var(--blue);width:22px}@media (min-width:769px) and (max-width:1024px){.lp4-wrap{padding:0 28px}.lp4-hero{padding:24px 0 60px}.lp4-hero-head{margin-bottom:32px}.lp4-hero-h1{font-size:32px}.lp4-body-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:24px}.lp4-feats{gap:8px;max-width:100%}.lp4-feat{padding:8px 10px}.lp4-feat h4{font-size:14px}.lp4-feat p{margin-left:26px;font-size:11.5px;line-height:1.5}.lp4-screen{border-radius:12px}}@media (max-width:768px){.lp4-wrap{padding:0 16px}.lp4-nav{height:60px}.lp4-brand{gap:8px}.lp4-picon{border-radius:7px;width:28px;height:28px}.lp4-wm{font-size:15px}.lp4-navlinks{display:none}.lp4-navr{gap:6px}.lp4-lnk{padding:6px 10px;font-size:12.5px}.lp4-btn-dark{padding:7px 15px;font-size:12.5px}.lp4-hero{padding:20px 0 48px}.lp4-hero-head{margin-bottom:20px}.lp4-hero-h1{letter-spacing:-.01em;font-size:24px}.lp4-body-grid{flex-direction:column;gap:20px;width:100%;display:flex}.lp4-visual{order:1;width:100%}.lp4-screen{aspect-ratio:16/11;border-radius:12px;box-shadow:0 16px 36px -16px #0b0b0c47,0 2px 6px -2px #0b0b0c0f}.lp4-dots{display:flex}.lp4-feats{order:2;gap:6px;max-width:100%}.lp4-feat{border-radius:10px;margin-left:0;padding:9px 12px}.lp4-feat-hdr{gap:8px}.lp4-feat-num{font-size:12px}.lp4-feat h4{font-size:13.5px}.lp4-feat p{margin:3px 0 0 24px;font-size:11.5px;line-height:1.5}}@media (max-width:375px){.lp4-wrap{padding:0 12px}.lp4-hero-h1{font-size:21px}.lp4-feat{padding:8px 10px}.lp4-feat p{margin-left:20px;font-size:11px}}