/* screen2ipcam.com/blog (20/10/2026) - classes bl- only */
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:#16223a;font-family:'Inter','Segoe UI',system-ui,Arial,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:clip}
.bl *{box-sizing:border-box}.bl img{max-width:100%;display:block}
.bl a{color:#1b4fd6}
.bl-wrap{max-width:1220px;margin:0 auto;padding:0 20px}
.bl-hero{background:#f4f7fc;border-bottom:1px solid #e6ecf6;padding:54px 0 34px;position:relative;overflow:hidden}
.bl-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(27,79,214,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(27,79,214,.06) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(180deg,#000,transparent);pointer-events:none}
.bl-hero .bl-wrap{position:relative;z-index:1}
.bl-eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#1b4fd6}
.bl h1{font-size:clamp(32px,4.4vw,52px);line-height:1.1;margin:12px 0;letter-spacing:-.02em;color:#0d1b3a}
.bl-grad{background:linear-gradient(100deg,#1b4fd6,#16a34a);-webkit-background-clip:text;background-clip:text;color:transparent}
.bl-hero p{font-size:18px;color:#3a4a66;max-width:660px;margin:0 0 22px}
.bl-search{display:flex;gap:8px;max-width:620px;background:#fff;border:1px solid #d6dfec;border-radius:14px;padding:6px;box-shadow:0 10px 30px rgba(20,40,90,.08)}
.bl-search input{flex:1;min-width:0;border:0;outline:0;font:500 16px inherit;padding:10px 12px;background:transparent}
.bl-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;border:0;background:linear-gradient(100deg,#1b4fd6,#16a34a);color:#fff!important;font:700 15px inherit;text-decoration:none;cursor:pointer;white-space:nowrap}
.bl-btn-o{background:#fff;color:#16223a!important;border:1px solid #d6dfec}
.bl-cats{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.bl-cat{border:1px solid #d6dfec;background:#fff;border-radius:999px;padding:7px 14px;font:600 14px inherit;color:#3a4a66;cursor:pointer}
.bl-cat.on{background:#0d1b3a;color:#fff;border-color:#0d1b3a}
.bl-list{padding-top:40px;padding-bottom:20px}
.bl-feat{display:grid;grid-template-columns:1.2fr 1fr;border:1px solid #e6ecf6;border-radius:22px;overflow:hidden;text-decoration:none;color:#16223a;background:#fff;margin-bottom:30px;box-shadow:0 10px 30px rgba(20,40,90,.06)}
.bl-feat .bl-im{min-height:300px;background:#0d1b3a}.bl-feat .bl-im img{width:100%;height:100%;object-fit:cover}
.bl-feat .bl-bd{padding:32px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.bl-feat h2{font-size:28px;line-height:1.2;margin:0;color:#0d1b3a}
.bl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bl-card{background:#fff;border:1px solid #e6ecf6;border-radius:18px;overflow:hidden;text-decoration:none;color:#16223a;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.bl-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,40,90,.1)}
.bl-card .bl-im{aspect-ratio:16/9;background:#f4f7fc;overflow:hidden}.bl-card .bl-im img{width:100%;height:100%;object-fit:cover}
.bl-bd{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.bl-card h3{font-size:18px;line-height:1.3;margin:0;color:#0d1b3a}
.bl-bd p{margin:0;color:#5b6b86;font-size:14.5px}
.bl-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:12.5px;color:#5b6b86;font-weight:600}
.bl-pill{font-size:11px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;border-radius:6px;padding:3px 8px;background:#e5eefc;color:#1b4fd6}
.bl-pill.bl-solution{background:#fff0d6;color:#8a5200}.bl-pill.bl-tech{background:#ece8ff;color:#4b3aa8}.bl-pill.bl-compare{background:#d9f6e4;color:#08702f}
.bl-rd{margin-top:auto;font-weight:700;font-size:14px;color:#1b4fd6}
.bl-empty{text-align:center;color:#5b6b86}
.bl-ahead{background:#f4f7fc;border-bottom:1px solid #e6ecf6;padding:38px 0 30px}
.bl-crumb{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:#5b6b86}
.bl-crumb a{text-decoration:none}
.bl-ahead h1{max-width:920px}
.bl-sub{font-size:19px;color:#3a4a66;max-width:800px;margin:0 0 18px}
.bl-by{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:14px;color:#5b6b86}
.bl-by img{border-radius:9px}.bl-by b{color:#16223a}
.bl-lay{display:grid;grid-template-columns:230px minmax(0,1fr) 270px;gap:44px;padding-top:40px;padding-bottom:10px;align-items:start}
.bl-toc{position:sticky;top:90px;font-size:14px}
.bl-toc h6,.bl-box h6{font-size:11.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#7a8aa3;margin:0 0 10px}
.bl-toc a{display:block;text-decoration:none;color:#3a4a66;padding:7px 12px;border-inline-start:2px solid #e6ecf6;line-height:1.35}
.bl-toc a:hover{color:#1b4fd6;border-color:#1b4fd6}
.bl-prose{font-size:17.5px;line-height:1.75;color:#1d2b3f;min-width:0}
.bl-prose h2{font-size:28px;line-height:1.2;margin:40px 0 12px;color:#0d1b3a;scroll-margin-top:90px}
.bl-prose p{margin:0 0 18px}
.bl-prose ul,.bl-prose ol{padding-inline-start:24px;margin:0 0 18px}.bl-prose li{margin:7px 0}
.bl-prose code{font:600 .86em Consolas,ui-monospace,monospace;background:#f4f7fc;border:1px solid #e6ecf6;border-radius:6px;padding:1px 6px;word-break:break-word}
.bl-prose figure{margin:24px 0}.bl-prose figure img{border-radius:14px;border:1px solid #e6ecf6;box-shadow:0 10px 30px rgba(20,40,90,.08);width:100%;height:auto}
.bl-prose figcaption{font-size:13.5px;color:#5b6b86;margin-top:8px}
.bl-kv{border:1px solid #e6ecf6;border-radius:14px;overflow:hidden;margin:16px 0 24px}
.bl-kv div{display:grid;grid-template-columns:1fr 1.5fr;border-top:1px solid #e6ecf6}.bl-kv div:first-child{border-top:0}
.bl-kv b,.bl-kv span{padding:10px 16px;font-size:15px}.bl-kv b{background:#f4f7fc}.bl-kv span{font-family:Consolas,ui-monospace,monospace;font-size:14px;word-break:break-word}
.bl-call{display:grid;grid-template-columns:26px 1fr;gap:12px;border-radius:14px;padding:16px 18px;margin:22px 0;border:1px solid #c9e2f7;background:#eef7ff}
.bl-call.warn{background:#fff7e6;border-color:#f2d9a6}
.bl-call b{display:block;margin-bottom:2px}.bl-call p{margin:0;font-size:15.5px}
.bl-steps{counter-reset:s;list-style:none;padding:0!important}
.bl-steps li{counter-increment:s;position:relative;padding-inline-start:50px;margin:0 0 18px!important;min-height:34px}
.bl-steps li::before{content:counter(s);position:absolute;inset-inline-start:0;top:0;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#1b4fd6,#16a34a);color:#fff;font-weight:800;display:grid;place-items:center}
.bl-cta{background:#0d1b3a;color:#fff;border-radius:18px;padding:24px;margin:32px 0;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.bl-cta b{display:block;font-size:19px}.bl-cta span{color:#a9bdd4;font-size:14.5px}
.bl-faq details{border-bottom:1px solid #e6ecf6}
.bl-faq summary{cursor:pointer;padding:16px 0;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
.bl-faq summary::-webkit-details-marker{display:none}.bl-faq summary::after{content:"+";color:#1b4fd6;font-size:22px;line-height:1}
.bl-faq details[open] summary::after{content:"–"}.bl-faq p{margin:0 0 16px}
.bl-side{position:sticky;top:90px;display:grid;gap:14px}
.bl-box{border:1px solid #e6ecf6;border-radius:16px;padding:18px;background:#fff}
.bl-box p{margin:0 0 12px;font-size:14.5px;color:#3a4a66}.bl-box .bl-btn{width:100%}
.bl-rel{display:block;text-decoration:none;font-weight:600;font-size:14.5px;padding:9px 0;border-top:1px solid #eef2f8;color:#16223a!important}
.bl-rel:first-of-type{border-top:0}.bl-rel:hover{color:#1b4fd6!important}
.bl-more{padding-top:40px;padding-bottom:20px;border-top:1px solid #e6ecf6;margin-top:30px}
.bl-more h2{font-size:26px;color:#0d1b3a;margin:0 0 18px}
@media(max-width:1100px){.bl-lay{grid-template-columns:minmax(0,1fr) 250px}.bl-toc{display:none}}
@media(max-width:900px){.bl-lay{grid-template-columns:1fr;gap:20px}.bl-side{position:static}.bl-feat{grid-template-columns:1fr}.bl-feat .bl-im{min-height:200px}.bl-grid{grid-template-columns:1fr 1fr}.bl-prose{font-size:17px}.bl-kv div{grid-template-columns:1fr}}
@media(max-width:600px){.bl-grid{grid-template-columns:1fr}.bl-search{flex-wrap:wrap}.bl-search .bl-btn{width:100%}.bl-feat .bl-bd{padding:22px}.bl-feat h2{font-size:23px}}