/* Обложка olt.am: hero с анимированной PON-схемой, демо-ролик, документация, появление блоков при прокрутке */
.hero3{position:relative;overflow:hidden;background:#0F1B24;color:#fff;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1;pointer-events:none}
.hero-bg .grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 60% 40%,#000 30%,transparent 75%)}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;animation:blob 14s ease-in-out infinite alternate}
.blob.b1{width:520px;height:520px;left:-120px;top:-160px;background:#2B4FD6}
.blob.b2{width:460px;height:460px;right:-100px;bottom:-200px;background:#14B8A6;animation-delay:-7s}
@keyframes blob{from{transform:translate(0,0) scale(1)}to{transform:translate(60px,40px) scale(1.15)}}
.hero3-in{display:flex;flex-wrap:wrap;gap:48px;align-items:center;padding-top:72px;padding-bottom:88px}
.hero3-txt{flex:1 1 460px;min-width:0}
.hero3 h1{font-size:54px;line-height:1.05;letter-spacing:-1.3px;margin:16px 0 0;max-width:640px;background:linear-gradient(90deg,#fff 0%,#DCE7FF 60%,#9FE8DC 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero3 p{font-size:19px;line-height:1.6;color:#B9C4CE;max-width:580px;margin:20px 0 0}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;font-size:13px}
.tag-line span{border:1px solid rgba(91,140,255,.45);color:#9FB8FF;border-radius:999px;padding:4px 10px;background:rgba(91,140,255,.08)}
.hero3-pic{flex:1 1 440px;min-width:0}
.pon{width:100%;height:auto;display:block;filter:drop-shadow(0 20px 40px rgba(0,0,0,.35))}
.pon .thin{stroke-width:1.5;opacity:.7}
.pon-lines path{stroke-dasharray:6 10;animation:dash 2.2s linear infinite}
@keyframes dash{to{stroke-dashoffset:-32}}
.pon .onu{fill:#1A2A38;stroke:#2DD4BF;stroke-width:1.5;animation:onu 3s ease-in-out infinite}
.pon .onu.warn{stroke:#F59E0B;animation:onuwarn 1.2s ease-in-out infinite}
@keyframes onu{0%,100%{fill:#1A2A38}50%{fill:#16413C}}
@keyframes onuwarn{0%,100%{fill:#1A2A38}50%{fill:#5A3A0A}}
.skpi{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px}
.skpi b{display:block;font-size:34px;letter-spacing:-.8px;color:#fff}
.skpi small{display:block;color:#8FA3B4;font-size:13px;margin-top:2px}
.slead{font-size:18px;line-height:1.6;color:#4A5A66;max-width:720px;margin:-24px 0 32px}
.sfi{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#EEF3FF,#E6FBF7);font-size:22px}
.sfeat{transition:transform .25s ease,box-shadow .25s ease}
.sfeat:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,27,36,.08)}
.sgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:20px}
/* появление при прокрутке */
.reveal{animation:rise .7s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.blob,.pon-lines path,.pon .onu,.scene,.sdemo-dots i{animation:none!important}}
/* демо */
.sdemo-wrap{display:flex;flex-wrap:wrap;gap:40px;align-items:center}
.sdemo{flex:1 1 480px;min-width:0;background:#0F1B24;border-radius:18px;box-shadow:0 30px 60px rgba(15,27,36,.25);overflow:hidden;color:#fff}
.sdemo-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#162430}
.sdemo-bar span{width:11px;height:11px;border-radius:50%;background:#2F4150}.sdemo-bar span:first-child{background:#FF5F57}.sdemo-bar span:nth-child(2){background:#FEBC2E}.sdemo-bar span:nth-child(3){background:#28C840}
.sdemo-bar b{margin-left:auto;font-weight:500;font-size:13px;color:#8FA3B4;font-family:'IBM Plex Mono',monospace}
.sdemo-body{position:relative;height:250px;padding:0 20px}
.scene{position:absolute;inset:0;padding:22px 24px;opacity:0;animation:scene 16s infinite}
@keyframes scene{0%{opacity:0;transform:translateY(10px)}4%{opacity:1;transform:none}22%{opacity:1}26%{opacity:0;transform:translateY(-10px)}100%{opacity:0}}
.scene-t{font-weight:600;font-size:17px;margin-bottom:14px}
.scene .hp-line{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:14px}
.scene .hp-line .mono:last-child{margin-left:auto;color:#B9C4CE}
.scene .dot{width:9px;height:9px;border-radius:50%;flex:none}
.scene-cta{margin-top:16px;display:inline-block;background:#2B4FD6;color:#fff;border-radius:9px;padding:8px 14px;font-size:14px;font-weight:600}
.sdemo-dots{display:flex;gap:6px;justify-content:center;padding:10px 0 14px}
.sdemo-dots i{width:28px;height:4px;border-radius:2px;background:rgba(255,255,255,.15);overflow:hidden;position:relative}
.sdemo-dots i::after{content:'';position:absolute;inset:0;background:#2DD4BF;transform:scaleX(0);transform-origin:left;animation:dotp 16s infinite;animation-delay:inherit}
@keyframes dotp{0%{transform:scaleX(0)}25%{transform:scaleX(1)}25.01%,100%{transform:scaleX(0)}}
.sdemo-txt{flex:1 1 320px}.sdemo-txt h3{font-size:22px;margin:0 0 12px}.sdemo-txt p{line-height:1.6;color:#4A5A66}
.svideo{flex:1 1 520px;aspect-ratio:16/9;border-radius:18px;overflow:hidden;box-shadow:0 30px 60px rgba(15,27,36,.25);background:#000}.svideo iframe{width:100%;height:100%;border:0}
/* документация */
.sdocs{display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:start}
.sdnav{position:sticky;top:84px;display:flex;flex-direction:column;gap:4px}
.sdnav a{padding:10px 14px;border-radius:10px;color:#2A3B49;text-decoration:none;font-weight:500;border:1px solid transparent}
.sdnav a:hover{background:#F3F5F7}.sdnav a.on{background:#EEF3FF;border-color:#D7E2FF;color:#1D4FB8}
.sdoc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px 36px;max-width:860px;line-height:1.65;color:#2A3B49}
.sdoc-h{margin:0 0 18px;font-size:28px;letter-spacing:-.4px;color:var(--ink)}
.sdoc h3{margin:26px 0 8px;font-size:18px;color:var(--ink)}.sdoc ol,.sdoc ul{padding-left:22px}.sdoc li{margin:6px 0}.sdoc .mono{background:#F3F5F7;padding:1px 6px;border-radius:5px;font-size:13.5px}
@media (max-width:900px){.sdocs{grid-template-columns:1fr}.sdnav{position:static;flex-direction:row;flex-wrap:wrap}.sdoc{padding:22px}}
@media (max-width:700px){.hero3 h1{font-size:34px}.hero3-in{padding-top:40px;padding-bottom:56px}.skpi b{font-size:26px}.sdemo-body{height:290px}}

/* hero-анимация (Claude Design, /hero/) */
.hero-frame{aspect-ratio:16/9;border-radius:18px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.08);background:#0F1B24}
.hero-frame iframe{width:100%;height:100%;border:0;display:block;pointer-events:none}