/* Brend Svet video library — scoped to this page only. */
#bs-useful-video{--bsv-ink:#183440;--bsv-blue:#0079ad;--bsv-muted:#526872;--bsv-border:#dce6eb;--bsv-soft:#f2f7fa;max-width:1180px;margin:0 auto;color:var(--bsv-ink);font:16px/1.6 Arial,Helvetica,sans-serif;text-align:left}
#bs-useful-video,#bs-useful-video *{box-sizing:border-box}
#bs-useful-video [hidden]{display:none!important}
#bs-useful-video a{color:#006e9d;text-decoration:none}
#bs-useful-video a:hover{text-decoration:underline}
#bs-useful-video :is(a,button,input,select,summary):focus-visible{outline:3px solid #0079ad;outline-offset:4px}
#bs-useful-video h2,#bs-useful-video h3,#bs-useful-video p{padding:0;float:none;background:none;border:0;text-transform:none}
#bs-useful-video h2{margin:0 0 10px;font-size:28px;line-height:1.2;font-weight:700;color:var(--bsv-ink)}
#bs-useful-video h3{margin:0 0 10px;font-size:20px;line-height:1.35;font-weight:700;color:var(--bsv-ink)}
#bs-useful-video p{margin:0 0 16px}
#bs-useful-video :is(button,input,select){font:inherit;letter-spacing:normal;text-transform:none}
#bs-useful-video .bsv-hero{position:relative;padding:30px 32px;border:1px solid var(--bsv-border);border-radius:18px;background:linear-gradient(115deg,#edf6fa,#f9fbfc);margin:0 0 24px;overflow:hidden}
#bs-useful-video .bsv-eyebrow{font-size:12px;font-weight:700;letter-spacing:1.5px;color:#00709d;margin-bottom:12px;text-transform:uppercase}
#bs-useful-video .bsv-lead{font-size:21px;line-height:1.5;max-width:900px;margin-bottom:10px}
#bs-useful-video .bsv-hero-note{color:var(--bsv-muted);max-width:880px;margin-bottom:22px}
#bs-useful-video .bsv-chips{display:flex;gap:9px;flex-wrap:wrap;margin:0}
#bs-useful-video .bsv-chips a{display:inline-flex;align-items:center;min-height:42px;padding:7px 13px;border:1px solid #cbdfe9;border-radius:8px;background:#fff;font-size:14px;font-weight:700}
#bs-useful-video .bsv-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:26px}
#bs-useful-video .bsv-nav a{display:flex;gap:12px;align-items:center;padding:17px 14px;border:1px solid var(--bsv-border);border-radius:12px;font-weight:700;line-height:1.35;background:#fff}
#bs-useful-video .bsv-nav a:hover{border-color:#0079ad;background:#f5fafc;text-decoration:none}
#bs-useful-video .bsv-nav b{display:grid;place-items:center;flex:none;background:#edf5f9;color:#0079ad;width:35px;height:35px;border-radius:9px;font-size:17px}
#bs-useful-video .bsv-nav small{display:block;font-size:12px;color:var(--bsv-muted);font-weight:400;margin-top:4px}
#bs-useful-video .bsv-tools{padding:21px;border:1px solid var(--bsv-border);border-radius:14px;background:#fff;margin-bottom:30px}
#bs-useful-video .bsv-fields{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(0,1fr) minmax(0,1.35fr);gap:14px;align-items:end}
#bs-useful-video .bsv-field{display:block;font-size:13px;font-weight:700;margin:0;min-width:0;color:var(--bsv-ink)}
#bs-useful-video .bsv-field input,#bs-useful-video .bsv-field select{display:block;width:100%;max-width:100%;height:46px;min-height:46px;padding:10px 12px;border:1px solid #bdcfd9;border-radius:7px;background:#fff;box-shadow:none;color:var(--bsv-ink);font-size:15px;margin:6px 0 0}
#bs-useful-video .bsv-tool-foot{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:13px;font-size:14px;color:var(--bsv-muted)}
#bs-useful-video .bsv-reset{border:0;padding:6px 0;color:#006e9d;background:transparent;cursor:pointer;min-height:34px;box-shadow:none}
#bs-useful-video .bsv-reset:hover{text-decoration:underline}
#bs-useful-video .bsv-section{margin:0 0 44px;scroll-margin-top:90px}
#bs-useful-video .bsv-section-intro{color:var(--bsv-muted);max-width:900px;margin-bottom:22px}
#bs-useful-video .bsv-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
#bs-useful-video .bsv-card{display:flex;flex-direction:column;min-width:0;margin:0;border:1px solid var(--bsv-border);border-radius:14px;background:#fff;overflow:hidden;scroll-margin-top:90px;box-shadow:0 3px 13px #18344006}
#bs-useful-video .bsv-media{position:relative;width:100%;aspect-ratio:16/9;background:#14232b;isolation:isolate}
#bs-useful-video .bsv-cover{position:absolute;inset:0;display:block;width:100%;height:100%;overflow:hidden;color:#fff}
#bs-useful-video .bsv-cover img{display:block;width:100%;height:100%;max-width:none;max-height:none;object-fit:contain;margin:0;padding:0;border:0;transition:transform .25s ease}
#bs-useful-video .bsv-cover:hover img{transform:scale(1.015)}
#bs-useful-video .bsv-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#051c2f66,transparent 55%);pointer-events:none}
#bs-useful-video .bsv-play{position:absolute;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:60px;height:60px;border-radius:50%;background:#0079adef;box-shadow:0 3px 20px #0004;border:2px solid #ffffffb3}
#bs-useful-video .bsv-play svg{display:block;width:23px;height:23px;fill:#fff;margin-left:4px}
#bs-useful-video .bsv-cover-label{position:absolute;bottom:13px;left:15px;z-index:1;font-size:13px;font-weight:700;color:#fff;text-shadow:0 1px 3px #000}
#bs-useful-video .bsv-duration{position:absolute;bottom:12px;right:12px;z-index:1;padding:3px 7px;border-radius:5px;background:#10222edd;color:#fff;font-size:12px;font-variant-numeric:tabular-nums;line-height:1.5}
#bs-useful-video .bsv-media iframe{position:absolute;inset:0;display:block;width:100%;height:100%;border:0;margin:0;max-width:none;max-height:none}
#bs-useful-video .bsv-card-body{display:flex;flex:1;flex-direction:column;padding:22px}
#bs-useful-video .bsv-tag{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#4f6670;font-size:12px;font-weight:700;letter-spacing:.2px;line-height:1.5;margin-bottom:10px}
#bs-useful-video .bsv-tag span:first-child{padding:3px 7px;border-radius:4px;background:#edf5f9;color:#00729f}
#bs-useful-video .bsv-card-body p{font-size:15px;line-height:1.6;color:var(--bsv-muted);margin-bottom:17px}
#bs-useful-video .bsv-card-links{margin-top:auto;padding-top:14px;border-top:1px solid #e8eef1;display:flex;align-items:flex-start;justify-content:space-between;gap:14px;font-size:13px;line-height:1.5}
#bs-useful-video .bsv-card-links a:first-child{font-weight:700;max-width:65%}
#bs-useful-video .bsv-rutube{flex-shrink:0;color:#536973;font-size:12px}
#bs-useful-video .bsv-stop{display:block;cursor:pointer;width:100%;border:0;border-bottom:1px solid var(--bsv-border);border-radius:0;padding:8px 12px;background:#edf5f9;color:#006e9d;font-size:13px;box-shadow:none}
#bs-useful-video .bsv-empty{padding:30px;border-radius:14px;background:var(--bsv-soft);margin-bottom:32px;text-align:center}
#bs-useful-video .bsv-empty strong{display:block;font-size:20px;margin-bottom:8px}
#bs-useful-video .bsv-help{display:grid;grid-template-columns:1.7fr 1fr;gap:25px;align-items:center;padding:28px 30px;border-radius:16px;background:#eaf4f9;border:1px solid #cfe3ed;margin:14px 0 35px}
#bs-useful-video .bsv-help h2{font-size:25px}
#bs-useful-video .bsv-help p{color:var(--bsv-muted);margin:0;font-size:15px}
#bs-useful-video .bsv-actions{display:flex;flex-direction:column;align-items:stretch;gap:10px;text-align:center}
#bs-useful-video .bsv-button{display:inline-flex;justify-content:center;align-items:center;padding:12px 18px;min-height:46px;border-radius:8px;border:1px solid #0079ad;background:#0079ad;color:#fff;font-size:15px;font-weight:700;line-height:1.4}
#bs-useful-video .bsv-button:hover{background:#00658f;text-decoration:none}
#bs-useful-video .bsv-secondary{background:#fff;color:#006d9b;border-color:#aacedd}
#bs-useful-video .bsv-secondary:hover{background:#f6fbfd}
#bs-useful-video .bsv-faq{margin-bottom:30px}
#bs-useful-video .bsv-faq details{border-bottom:1px solid var(--bsv-border);padding:0;margin:0}
#bs-useful-video .bsv-faq summary{padding:17px 28px 17px 0;font-weight:700;cursor:pointer;line-height:1.5}
#bs-useful-video .bsv-faq details p{max-width:970px;color:var(--bsv-muted);font-size:15px;margin-bottom:18px}
#bs-useful-video .bsv-info{padding:18px 22px;border-left:3px solid #0079ad;background:#f4f8fa;color:#4c626d;font-size:14px;margin:26px 0 32px;border-radius:0 8px 8px 0}
#bs-useful-video .bsv-info p{margin:0}
#bs-useful-video .bsv-related{margin-bottom:22px}
#bs-useful-video .bsv-related ul{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px}
#bs-useful-video .bsv-related li{padding:0;margin:0;list-style:none}
#bs-useful-video .bsv-related li::before{content:none}
#bs-useful-video .bsv-related a{display:block;padding:11px 0;border-bottom:1px solid var(--bsv-border);font-size:15px}
#bs-useful-video .bsv-related a::after{content:" →"}
#bs-useful-video .bsv-top{font-size:14px;text-align:right;margin:24px 0 0}
@media(max-width:800px){#bs-useful-video .bsv-nav{grid-template-columns:repeat(2,minmax(0,1fr))}#bs-useful-video .bsv-fields{grid-template-columns:repeat(2,minmax(0,1fr))}#bs-useful-video .bsv-field:first-child{grid-column:1/-1}#bs-useful-video .bsv-card-body{padding:18px}#bs-useful-video .bsv-grid{gap:18px}#bs-useful-video .bsv-help{grid-template-columns:1fr}}
@media(max-width:600px){#bs-useful-video{font-size:15px}#bs-useful-video h2{font-size:25px}#bs-useful-video h3{font-size:19px}#bs-useful-video .bsv-hero{padding:22px 19px}#bs-useful-video .bsv-lead{font-size:19px}#bs-useful-video .bsv-grid{grid-template-columns:1fr;gap:20px}#bs-useful-video .bsv-nav{gap:8px}#bs-useful-video .bsv-nav a{font-size:13px;padding:12px 9px;gap:8px}#bs-useful-video .bsv-nav b{width:27px;height:30px;font-size:15px}#bs-useful-video .bsv-tools{padding:17px}#bs-useful-video .bsv-fields{gap:11px}#bs-useful-video .bsv-field select{font-size:13px;padding-left:8px}#bs-useful-video .bsv-section{margin-bottom:34px}#bs-useful-video .bsv-help{padding:23px 20px}#bs-useful-video .bsv-related ul{grid-template-columns:1fr;gap:0}#bs-useful-video .bsv-card-links{gap:10px}#bs-useful-video .bsv-card-links a:first-child{max-width:64%}}
@media(prefers-reduced-motion:reduce){#bs-useful-video .bsv-cover img{transition:none}}
#bs-useful-video .bsv-illustration{background:#fff}
#bs-useful-video .bsv-photo-label{position:absolute;top:12px;left:12px;padding:4px 8px;border-radius:4px;background:#fffffff0;color:#4b626d;font-size:11px;z-index:1;line-height:1.5}