:root{
  --bg:#070B11; --panel:#0F1724; --panel-2:#121C2B;
  --line:#1C2836; --line-strong:#2B3B4E;
  --text:#E9F0FF; --muted:#94A6BC; --dim:#6B7F96;
  --accent:#00A9A6; --accent-soft:#73D0CE;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 24px}
[id]{scroll-margin-top:84px}

/* header */
header{position:sticky;top:0;z-index:20;backdrop-filter:blur(14px);
  background:rgba(7,11,17,.74);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:650;letter-spacing:-.01em;font-size:17px}
.brand .mark{width:28px;height:28px;display:block;border-radius:7px}
nav{display:flex;align-items:center;gap:26px;font-size:15px;color:var(--muted)}
nav a:hover{color:var(--text)}
nav a[aria-current="page"]{color:var(--accent-soft)}
nav a.cta{color:var(--text);padding:7px 16px;border:1px solid var(--line-strong);border-radius:999px}
nav a.cta:hover{border-color:var(--accent);color:var(--accent-soft)}
nav a.lang{font-size:12.5px;letter-spacing:.06em;padding:4px 11px;border-radius:8px;
  border:1px solid var(--line);color:var(--muted)}
nav a.lang:hover{border-color:var(--accent);color:var(--accent-soft)}
@media (max-width:760px){ nav .hide-sm{display:none} }

/* hero */
.hero{position:relative;padding:100px 0 84px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-45% -20% auto -20%;height:125%;
  background:radial-gradient(46% 44% at 50% 0%,rgba(0,169,166,.17),transparent 70%);
  pointer-events:none}
.hero-inner{position:relative}
.page-hero{position:relative;padding:72px 0 52px;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:-90% -20% auto -20%;height:210%;
  background:radial-gradient(40% 40% at 30% 0%,rgba(0,169,166,.14),transparent 70%);
  pointer-events:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:24px;
  padding:5px 13px;border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--muted);background:var(--panel)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent-soft);
  box-shadow:0 0 10px rgba(115,208,206,.9)}
h1{font-size:clamp(34px,5.2vw,56px);line-height:1.14;margin:0 0 24px;
  letter-spacing:-.03em;font-weight:700}
h1.sm{font-size:clamp(28px,4vw,42px)}
h1 em{font-style:normal;background:linear-gradient(100deg,#73D0CE,#00A9A6);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:62ch;margin:0 0 34px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:10px;
  font-size:15px;font-weight:600;border:1px solid transparent;transition:.18s}
.btn-primary{background:linear-gradient(135deg,#73D0CE,#00A9A6);color:#04191A}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px -8px rgba(0,169,166,.8)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-soft)}
.compat{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--dim)}

/* sections */
section{padding:78px 0;border-top:1px solid var(--line)}
section.first{border-top:0}
.h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.02em;margin:0 0 12px;font-weight:650}
.sub{color:var(--muted);margin:0 0 46px;font-size:16px;max-width:62ch}

/* cards */
.grid{display:grid;gap:16px;grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){ .grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:600px){ .grid{grid-template-columns:1fr} }
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.2s}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card h3{margin:0 0 9px;font-size:16px;font-weight:600;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.72}
.ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(0,169,166,.12);border:1px solid rgba(0,169,166,.28)}
.ico svg{display:block;stroke:var(--accent-soft);fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round}

/* flow list */
.flow{display:grid;gap:0;grid-template-columns:1fr 1fr}
@media (max-width:760px){ .flow{grid-template-columns:1fr} }
.step{display:flex;gap:16px;padding:22px 22px 22px 0}
.step .num{flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:650;color:var(--accent-soft);
  background:rgba(0,169,166,.1);border:1px solid rgba(0,169,166,.3)}
.step h3{margin:2px 0 6px;font-size:15.5px;font-weight:600}
.step p{margin:0;color:var(--muted);font-size:14.5px}

/* pricing */
.plans{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media (max-width:760px){ .plans{grid-template-columns:1fr} }
.plan{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px}
.plan.hi{border-color:rgba(0,169,166,.45);
  background:linear-gradient(180deg,rgba(0,169,166,.08),var(--panel) 55%)}
.plan .tag{font-size:13px;color:var(--dim);letter-spacing:.06em;text-transform:uppercase}
.plan .price{font-size:22px;font-weight:650;margin:6px 0 18px}
.plan ul{margin:0;padding-left:18px;color:var(--muted);font-size:14.5px}
.plan li{margin-bottom:8px}
.plan li::marker{color:var(--accent)}

/* download */
.dl-grid{display:grid;gap:16px;grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){ .dl-grid{grid-template-columns:1fr} }
.dl{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:26px;transition:.2s}
.dl:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.dl .os{font-size:13px;color:var(--dim);letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.dl .name{font-size:17px;font-weight:600;margin-bottom:6px}
.dl .meta{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.dl .btn{margin-top:auto;justify-content:center}
.note{margin-top:26px;font-size:14px;color:var(--dim)}
.note a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.note a:hover{color:var(--accent-soft)}

/* robot series */
.series{margin-bottom:54px}
.series-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:10px}
.series-head h3{margin:0;font-size:19px;font-weight:650;letter-spacing:-.01em}
.chip{font-size:12.5px;color:var(--accent-soft);background:rgba(0,169,166,.12);
  border:1px solid rgba(0,169,166,.28);padding:3px 10px;border-radius:999px;white-space:nowrap}
.series .desc{color:var(--muted);margin:0 0 20px;font-size:14.5px;max-width:72ch}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:660px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--muted);font-weight:600;background:var(--panel-2);font-size:13px}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(115,208,206,.04)}
td.model{font-weight:600;color:var(--text)}
td.n{font-variant-numeric:tabular-nums}
td.ok{color:var(--accent-soft);font-weight:700}

/* quick pick */
.picks{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media (max-width:760px){ .picks{grid-template-columns:1fr} }
.pick{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:22px 24px;transition:.2s}
.pick:hover{border-color:rgba(0,169,166,.5);transform:translateY(-2px)}
.pick b{display:block;font-size:15.5px;margin-bottom:4px}
.pick span{color:var(--muted);font-size:14px}
.pick .to{color:var(--accent-soft);font-size:13.5px;margin-top:10px;display:block}

/* warning / tips */
.warn{border-left:3px solid var(--accent);background:rgba(0,169,166,.06);
  padding:20px 24px;border-radius:0 12px 12px 0;color:var(--muted);font-size:14.5px}
.warn b{color:var(--text)}
.warn p{margin:0 0 10px}
.warn p:last-child{margin:0}
.tips{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media (max-width:760px){ .tips{grid-template-columns:1fr} }
.tip{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 24px}
.tip h3{margin:0 0 8px;font-size:15px;font-weight:600;display:flex;gap:9px;align-items:center}
.tip h3 .n{font-size:12px;color:var(--accent-soft);border:1px solid rgba(0,169,166,.35);
  border-radius:50%;width:22px;height:22px;display:grid;place-items:center;flex:none}
.tip p{margin:0;color:var(--muted);font-size:14.5px}

/* footer */
footer{border-top:1px solid var(--line);padding:38px 0;color:var(--dim);font-size:14px}
.foot{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.foot a:hover{color:var(--muted)}
.foot nav{gap:18px;font-size:14px}