.tutorials-page{background:#f1f4f5}
.tutorials-page .header nav a.active{color:white}
.tutorial-hero{color:white;background:#08141e url('/network-operations-background.webp') center/cover;position:relative;overflow:hidden}
.tutorial-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,13,20,.98),rgba(7,19,29,.92) 55%,rgba(7,20,30,.78))}
.tutorial-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(45,105,130,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(45,105,130,.08) 1px,transparent 1px);background-size:52px 52px}
.tutorial-hero-grid{min-height:600px;display:grid;grid-template-columns:1.1fr .7fr;gap:80px;align-items:center;padding:95px 0 105px;position:relative;z-index:1}
.tutorial-hero h1{font-size:clamp(48px,6.5vw,82px);line-height:.96;letter-spacing:-.065em;margin:22px 0 28px}
.tutorial-hero h1 em{font-style:normal;color:var(--cyan)}
.tutorial-hero p{max-width:660px;color:#a9bfca;font-size:16px;line-height:1.75}
.tutorial-hero-actions{display:flex;gap:11px;margin-top:31px}
.tutorial-route-card{padding:29px 31px;border:1px solid #31596e;background:rgba(7,21,31,.88);box-shadow:0 25px 70px rgba(0,0,0,.35)}
.tutorial-route-card>div{display:flex;align-items:center;gap:16px;padding:17px 0;border-bottom:1px solid #1e3d4d;color:#d6e3e8;font-size:13px}
.tutorial-route-card>div b{color:var(--cyan);font:700 10px Consolas,monospace}
.tutorial-route-card>p{color:#7894a2;font-size:11px;line-height:1.6;margin:21px 0 0}
.tutorial-library{background:#f1f4f5}
.tutorial-section-head{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end;margin-bottom:42px}
.tutorial-section-head h2{font-size:clamp(38px,4.4vw,58px);line-height:1.04;letter-spacing:-.055em;margin:14px 0 0}
.tutorial-section-head p{color:#60727e;font-size:15px;line-height:1.7;margin:0}
.tutorial-filters{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:20px}
.tutorial-filters button{border:1px solid #b9cbd3;background:transparent;color:#58717e;padding:10px 14px;border-radius:3px;font-size:11px;font-weight:750;cursor:pointer}
.tutorial-filters button:hover{border-color:#1684b9;color:#1684b9}
.tutorial-filters button.active{background:#0b1b27;border-color:#0b1b27;color:white}
.tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.tutorial-card{background:white;border:1px solid #d2dfe4;box-shadow:0 12px 35px rgba(10,29,39,.045);overflow:hidden}
.tutorial-video{aspect-ratio:16/9;background:#07131c}
.tutorial-video iframe{display:block;width:100%;height:100%;border:0}
.tutorial-card-content{padding:23px 25px 27px}
.tutorial-meta{display:flex;align-items:center;gap:9px;color:#1684b9;font:700 8px Consolas,monospace;letter-spacing:.07em;text-transform:uppercase}
.tutorial-meta span+span{padding-left:9px;border-left:1px solid #b9cbd3;color:#7c909b}
.tutorial-card h3{font-size:22px;line-height:1.2;margin:13px 0 9px}
.tutorial-card p{color:#687b86;font-size:12px;line-height:1.65;margin:0}
.tutorial-empty{grid-column:1/-1;padding:55px 30px;background:white;border:1px dashed #b9cbd3;text-align:center}
.tutorial-empty h3{font-size:25px;margin:13px 0 8px}
.tutorial-empty p{color:#687b86;font-size:13px;margin:0 auto;max-width:530px}
.tutorial-noscript{padding:18px;background:#fff8e4;border:1px solid #ead69b;color:#776019;font-size:12px}
.tutorial-topics{background:#091721;color:white}
.tutorial-topics .tutorial-section-head p{color:#94aab6}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}
.topic-grid article{position:relative;min-height:355px;padding:27px 24px;background:#0d222e;border:1px solid #234555}
.topic-number{color:var(--cyan);font:700 9px Consolas,monospace;letter-spacing:.1em}
.topic-mark{width:50px;height:50px;display:grid;place-items:center;margin:27px 0 23px;background:#123747;border:1px solid #2d677a;color:#d1e4e9;font:800 11px Consolas,monospace}
.topic-grid h3{font-size:20px;line-height:1.2;margin:0 0 12px}
.topic-grid p{color:#90a8b5;font-size:12px;line-height:1.65;margin:0 0 19px}
.topic-grid a{position:absolute;left:24px;bottom:25px;color:var(--cyan);font-size:11px;font-weight:750}
.tutorial-next{color:white;background:#07131d url('/network-operations-background.webp') center/cover;position:relative}
.tutorial-next:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#06121dec,#09202de8)}
.tutorial-next-inner{min-height:290px;display:flex;align-items:center;justify-content:space-between;gap:55px;position:relative}
.tutorial-next h2{font-size:clamp(38px,4.3vw,58px);line-height:1.04;letter-spacing:-.055em;margin:14px 0}
.tutorial-next p{color:#91a9b8;font-size:14px;max-width:670px}
.tutorial-next-inner>div:last-child{display:flex;flex-direction:column;align-items:center;gap:14px;white-space:nowrap}
.tutorial-next-inner>div:last-child>a:last-child{color:#a9bdc7;font-size:11px}
@media(max-width:980px){.tutorial-hero-grid{grid-template-columns:1fr;gap:40px}.tutorial-route-card{max-width:600px}.topic-grid{grid-template-columns:1fr 1fr}.tutorial-section-head{grid-template-columns:1fr;gap:18px}}
@media(max-width:720px){.tutorial-hero-grid{min-height:0;padding:68px 0 82px}.tutorial-hero h1{font-size:54px}.tutorial-hero p{font-size:15px}.tutorial-hero-actions{flex-direction:column}.tutorial-grid{grid-template-columns:1fr}.tutorial-filters{overflow:auto;flex-wrap:nowrap;padding-bottom:5px}.tutorial-filters button{white-space:nowrap}.topic-grid{grid-template-columns:1fr}.topic-grid article{min-height:300px}.tutorial-next-inner{display:block;padding:68px 0}.tutorial-next-inner>div:last-child{align-items:flex-start;margin-top:28px}.tutorial-next-inner .btn{width:100%}}