/* Ludu Robotics — dark tech theme */
:root{
  --bg:#0A1220;
  --panel:#0F1B30;
  --panel2:#12233D;
  --accent:#2F7BFF;
  --cyan:#38BDF8;
  --text:#E8EEF8;
  --muted:#9FB0C7;
  --line:rgba(255,255,255,.09);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.7 "Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .2s}
a:hover{color:#7CCBFF}
h1,h2,h3,h4{line-height:1.25;font-weight:700}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:76px 0}
.sec.alt{background:linear-gradient(180deg,var(--panel) 0%,var(--bg) 100%)}
.sec-head{max-width:720px;margin:0 auto 44px;text-align:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.sec-head p{color:var(--muted)}

/* buttons */
.btn{display:inline-block;padding:13px 26px;border-radius:9px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.2s}
.btn-accent{background:linear-gradient(135deg,#2F7BFF,#38BDF8);color:#fff}
.btn-accent:hover{color:#fff;box-shadow:0 8px 24px rgba(47,123,255,.35);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:8px}

/* header */
/* topbar */
.topbar{border-bottom:1px solid var(--line);background:rgba(7,13,24,.55)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:7px 0;font-size:13.5px}
.topbar-tag{color:var(--muted);letter-spacing:.02em}
.topbar-mail{display:inline-flex;align-items:center;gap:8px;color:#fff;font-weight:600;white-space:nowrap}
.topbar-mail:hover{color:var(--cyan)}
.topbar-mail svg{width:15px;height:15px;fill:var(--cyan);flex:none}

.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,18,32,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:19px;font-weight:800;letter-spacing:.06em;color:#fff}
.logo span{color:var(--cyan)}
.nav{display:flex;align-items:center;gap:28px}
.nav>a{color:var(--text);font-size:15px;font-weight:500}
.nav>a:hover,.nav>a.on{color:var(--cyan)}
.nav-cta{margin-left:6px}
.nav-tgl{display:none}
.nav-burger{display:none;cursor:pointer;padding:6px}
.nav-burger span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:.2s}

/* hero */
.hero{position:relative;padding:202px 0 88px;background:linear-gradient(180deg,rgba(7,12,22,.62) 0%,rgba(10,18,32,.88) 62%,var(--bg) 100%),url(/d/file/images/hero-robot.jpg) center/cover no-repeat}
.badge{display:inline-block;padding:7px 16px;border-radius:999px;border:1px solid rgba(56,189,248,.45);background:rgba(56,189,248,.08);color:var(--cyan);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5vw,58px);max-width:820px}
.hero-sub{color:#C4D2E8;font-size:clamp(16px,1.6vw,19px);max-width:680px;margin:22px 0 30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:54px}
.stats{display:flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:var(--radius);background:rgba(15,27,48,.66);backdrop-filter:blur(6px);overflow:hidden}
.stats>div{flex:1 1 150px;padding:20px 26px;border-right:1px solid var(--line)}
.stats>div:last-child{border-right:none}
.stats b{display:block;font-size:26px;color:#fff;background:linear-gradient(135deg,#5EA0FF,#38BDF8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stats span{font-size:13px;color:var(--muted)}

/* cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:var(--text);transition:.25s;height:100%}
.card:hover{transform:translateY(-4px);border-color:rgba(47,123,255,.55);box-shadow:0 14px 34px rgba(2,8,20,.5);color:var(--text)}
.card-img{aspect-ratio:16/10;overflow:hidden;background:var(--panel2)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.card:hover .card-img img{transform:scale(1.045)}
.card-b{padding:20px 22px 24px}
.card-b h3{font-size:19px;margin-bottom:8px}
.card-b p{color:var(--muted);font-size:14.5px}
.more{display:inline-block;margin-top:14px;color:var(--cyan);font-weight:600;font-size:14px}
.feat{display:grid;grid-template-columns:1.15fr 1fr;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:22px;transition:.25s}
.feat:hover{border-color:rgba(47,123,255,.55);box-shadow:0 14px 34px rgba(2,8,20,.5)}
.feat-img{min-height:320px}
.feat-img img{width:100%;height:100%;object-fit:cover}
.feat-b{padding:38px 40px;display:flex;flex-direction:column;justify-content:center}
.feat-b h3{font-size:26px;margin:8px 0 12px}
.feat-b p{color:var(--muted);margin-bottom:18px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px}
.step i{font-style:normal;font-size:15px;font-weight:800;color:var(--cyan);letter-spacing:.1em}
.step h3{font-size:18px;margin:10px 0 8px}
.step p{color:var(--muted);font-size:14.5px}

/* comparison table */
.cmp{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:15px}
.cmp-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;overflow-x:auto}
.cmp-wrap .cmp{border:none}
.cmp th,.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.cmp thead th{background:var(--panel2);font-size:15px}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp td:first-child{color:var(--muted);font-weight:600;white-space:nowrap}
.cmp .hl{background:rgba(47,123,255,.09);color:#fff}
.cmp thead .hl{background:linear-gradient(135deg,rgba(47,123,255,.25),rgba(56,189,248,.18))}
.cmp td.hl{color:var(--text)}

/* split / feature rows */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split+.split{margin-top:56px}
.split img{border-radius:var(--radius);border:1px solid var(--line);width:100%;object-fit:cover}
.split h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px}
.split p{color:var(--muted);margin-bottom:12px}
.checklist{list-style:none;margin-top:6px}
.checklist li{padding:7px 0 7px 30px;position:relative;color:#C9D6EC}
.checklist li:before{content:"";position:absolute;left:0;top:13px;width:18px;height:18px;border-radius:50%;background:rgba(56,189,248,.15);border:1px solid rgba(56,189,248,.5)}
.checklist li:after{content:"";position:absolute;left:4.5px;top:17px;width:8px;height:5px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg)}

/* videos */
.vid{background:#000;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.vid video{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:#000}
.vid figcaption{padding:12px 16px;font-size:14px;color:var(--muted);background:var(--panel)}

/* quote strip */
.quote{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.quote img{width:100%;height:100%;object-fit:cover;min-height:300px}
.quote-b{padding:40px}
.quote-b h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.quote-b p{color:var(--muted)}

/* news cards */
.news-card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:var(--text);transition:.25s}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,123,255,.55);box-shadow:0 14px 34px rgba(2,8,20,.5);color:var(--text)}
.news-img{aspect-ratio:16/9;overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover}
.news-body{padding:18px 20px 22px}
.news-date{font-size:13px;color:var(--cyan);font-weight:600;letter-spacing:.04em}
.news-body h3{font-size:17px;margin:8px 0 6px}
.news-body p{color:var(--muted);font-size:14px}

/* CTA band */
.cta-band{background:linear-gradient(120deg,rgba(47,123,255,.16),rgba(56,189,248,.07));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-in h2{font-size:clamp(22px,2.8vw,32px)}
.cta-in p{color:var(--muted)}

/* page hero (list/news) */
.page-hero{padding:172px 0 56px;background:linear-gradient(180deg,rgba(15,27,48,.5),var(--bg))}
.page-hero.slim{padding-bottom:36px}
.crumb{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--cyan)}
.page-hero h1{font-size:clamp(28px,4vw,44px)}
.page-hero .sub{color:var(--muted);margin-top:12px;max-width:720px}
.art-meta{display:flex;gap:18px;color:var(--muted);font-size:14px;margin-top:14px}

/* list */
.list-grid{align-items:stretch}
.pager{margin-top:44px;text-align:center}
.pager a,.pager b{display:inline-block;min-width:38px;padding:8px 13px;margin:0 4px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:14px}
.pager b{background:linear-gradient(135deg,#2F7BFF,#38BDF8);color:#fff;border-color:transparent;font-weight:600}
.pager a:hover{border-color:var(--cyan);color:var(--cyan)}

/* article */
.art-wrap{max-width:860px}
.newstext{font-size:16.5px;color:#D7E1F2}
.newstext h2{font-size:27px;margin:40px 0 16px;color:#fff}
.newstext h3{font-size:20px;margin:30px 0 12px;color:#fff}
.newstext p{margin:14px 0;color:#C9D6EC}
.newstext ul,.newstext ol{margin:14px 0 14px 22px;color:#C9D6EC}
.newstext li{margin:7px 0}
.newstext img{border-radius:10px;border:1px solid var(--line);margin:22px 0}
.newstext video{width:100%;border-radius:10px;margin:22px 0;background:#000}
.newstext strong{color:#fff}
.newstext a{color:var(--cyan)}
.newstext table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.newstext th,.newstext td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.newstext th{background:var(--panel2);color:#fff}
.newstext blockquote{border-left:3px solid var(--accent);background:var(--panel);padding:14px 20px;border-radius:0 10px 10px 0;margin:20px 0;color:var(--muted)}
.art-nav{display:flex;justify-content:space-between;gap:20px;margin-top:48px;padding-top:26px;border-top:1px solid var(--line)}
.art-nav a{color:var(--cyan);font-size:14.5px}
.cta-inline{margin-top:44px;background:var(--panel);border:1px solid rgba(47,123,255,.4);border-radius:var(--radius);padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-inline p{margin:0!important;color:var(--text)!important;font-weight:600}

/* contact table in article */
.contact-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin:22px 0}
.contact-box h3{margin:0 0 10px!important}
.contact-box p{margin:6px 0!important}

/* footer */
.site-footer{background:#070D18;border-top:1px solid var(--line);margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:38px;padding:60px 24px 40px}
.foot-logo{font-size:20px;margin-bottom:14px}
.site-footer p{color:var(--muted);font-size:14px}
.foot-badge{display:inline-block;margin-top:12px;padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:var(--panel);font-size:12.5px!important;color:var(--muted)!important}
.site-footer h4{font-size:15px;margin-bottom:14px;color:#fff}
.foot-grid a{display:block;color:var(--muted);font-size:14px;padding:4px 0}
.foot-grid a:hover{color:var(--cyan)}
.foot-grid .btn{margin-top:12px}
.foot-bar{border-top:1px solid var(--line);padding:18px 0;font-size:13px;color:var(--muted)}

/* responsive */
@media(max-width:960px){
  .grid-3,.grid-2,.steps{grid-template-columns:repeat(2,1fr)}
  .feat,.split,.quote{grid-template-columns:1fr}
  .feat-img{min-height:240px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .quote img{min-height:220px}
}
@media(max-width:640px){
  .sec{padding:56px 0}
  .grid-3,.grid-2,.steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .stats>div{flex:1 1 46%;border-bottom:1px solid var(--line)}
  .cta-in{flex-direction:column;align-items:flex-start}
  .nav-burger{display:block}
  .nav{display:none;position:absolute;top:106px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:4px;background:rgba(10,18,32,.98);border-bottom:1px solid var(--line);padding:16px 24px 22px}
  .nav>a{padding:9px 0;font-size:16px;width:100%}
  .nav-cta{margin:10px 0 0}
  .nav-tgl:checked~.nav{display:flex}
  .topbar-tag{display:none}
  .topbar-in{justify-content:center;padding:6px 0}
  .hero{padding:164px 0 64px}
}