/* Layout: near-black stage, very large light-weight headlines, big rounded panels; one red accent for action and the active state.
   Motion carries the argument: a slow-moving hero, word-tabs that swap a whole panel, numbers that count up, bars that fill, a power slider. */
:root{
  color-scheme:dark;
  --bg:#04070C; --panel:#0D1219; --panel2:#151C26; --line:#222B37;
  --fg:#F4F6F8; --mute:#909CAB; --dim:#56606E; --faint:#7E8999; --accent:#E5281F; --accent-ink:#FFFFFF;
  --sans:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  --wrap:1240px; --r:14px;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:16px;line-height:1.7;font-weight:400}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--bg)}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{margin:0;font-weight:400;line-height:1.12;letter-spacing:-.022em;text-wrap:balance}
h1{font-size:clamp(38px,6.6vw,84px)}
h2{font-size:clamp(30px,4.6vw,58px)}
h3{font-size:20px;line-height:1.35;font-weight:500;letter-spacing:-.005em}
p{margin:0}
.lead{font-size:clamp(16px,1.5vw,19px);color:var(--mute);max-width:36em}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.red{color:var(--accent)}
.note{font-size:14px;color:var(--mute)}
.pending{font-family:var(--sans);font-size:12px;letter-spacing:0;color:var(--mute);border:1px dashed var(--dim);border-radius:4px;padding:1px 6px;white-space:nowrap;vertical-align:middle}

/* announcement + header */
.bar{background:var(--panel2);font-size:14px}
.bar .wrap{padding-block:9px;display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px}
.bar b{font-weight:500}
.bar .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:ping 2.4s infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(229,40,31,.55)}70%{box-shadow:0 0 0 9px rgba(229,40,31,0)}100%{box-shadow:0 0 0 0 rgba(229,40,31,0)}}
.bar a{color:var(--fg);text-decoration:none;border-bottom:1px solid var(--dim)}
.bar a:hover{border-color:var(--fg)}
.bar .x{margin-left:auto;background:none;border:0;color:var(--mute);font:inherit;font-size:15px;line-height:1;padding:5px 7px;cursor:pointer;border-radius:4px}
.bar .x:hover{color:var(--fg);background:rgba(255,255,255,.06)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;transition:background .3s,backdrop-filter .3s}
.top.solid{background:rgba(4,7,12,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.top .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px 30px;padding-block:16px}
.brand img{height:34px;width:auto;display:block}
.nav{display:flex;flex-wrap:nowrap;white-space:nowrap;gap:4px 26px;margin-inline:auto;font-size:15px}
.top .wrap>.btn{white-space:nowrap}
.nav .ddmenu{white-space:normal}
/* two-row header (set by script when one row does not fit): nav moves under the logo row */
.top.two .nav{order:3;flex-basis:100%;justify-content:center;margin-inline:0}
.top.two .wrap>.langs{margin-left:auto}
.nav a{text-decoration:none;color:var(--fg);opacity:.72;padding-block:4px}
.nav a:hover,.nav a[aria-current="page"]{opacity:1}
.nav a[aria-current="page"]{box-shadow:0 2px 0 var(--accent)}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);text-decoration:none;font-weight:500;padding:11px 22px;border:0;border-radius:8px;font-family:inherit;font-size:15px;cursor:pointer;transition:transform .2s,filter .2s}
.btn:hover{filter:brightness(1.12);transform:translateY(-1px)}
.btn.ghost{background:transparent;box-shadow:inset 0 0 0 1px var(--fg);color:var(--fg)}
.ar{display:inline-block;transition:transform .25s cubic-bezier(.2,.7,.2,1)}
a:hover .ar,button:hover .ar{transform:translateX(4px)}

/* products dropdown: hover on desktop, tap on touch, spans the header width */
.top .wrap{position:relative}
.dd{display:flex}
.ddbtn{background:none;border:0;font:inherit;color:var(--fg);opacity:.72;padding:24px 0;margin:-20px 0;cursor:pointer;display:inline-flex;align-items:center;gap:7px}
.ddbtn::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-2px) rotate(45deg);transition:transform .25s}
.ddbtn.cur span{box-shadow:0 2px 0 var(--accent)}
.dd.open .ddbtn,.ddbtn.cur,.ddbtn:hover{opacity:1}
.ddmenu{display:none;position:absolute;left:max(16px,env(safe-area-inset-left,0px));right:max(16px,env(safe-area-inset-right,0px));top:calc(100% - 6px);z-index:25;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;padding:10px;background:rgba(13,18,25,.97);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 30px 60px rgba(0,0,0,.55)}
@media (hover:hover){.dd:not(.shut):hover .ddmenu{display:grid}.dd:not(.shut):hover .ddbtn{opacity:1}.dd:not(.shut):hover .ddbtn::after{transform:translateY(1px) rotate(225deg)}}
.dd.open .ddmenu{display:grid}
.dd.open .ddbtn::after{transform:translateY(1px) rotate(225deg)}
.nav .ddmenu a{display:flex;flex-direction:column;gap:3px;padding:10px;border-radius:10px;opacity:1;transition:background .2s}
.nav .ddmenu a:hover{background:var(--panel2)}
.nav .ddmenu a[aria-current="page"]{box-shadow:inset 0 0 0 1px var(--accent)}
.ddmenu img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:7px;display:block;margin-bottom:7px}
.ddmenu b{font-weight:500;font-size:16px}
.ddmenu small{color:var(--mute);font-size:13px;line-height:1.5}
.nav .ddmenu a.gl{justify-content:flex-end;min-height:150px;background:radial-gradient(120% 120% at 100% 0%,rgba(229,40,31,.28),transparent 60%),var(--panel2)}
.ddmenu .go{margin-top:6px;font-size:14px}
.dd.smdd{position:relative}
.ddmenu.sm{left:-12px;right:auto;top:calc(100% + 14px);width:290px;grid-template-columns:minmax(0,1fr);gap:4px;padding:6px}
.langs{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);border-radius:999px}
.langs button{background:none;border:0;color:var(--mute);font:inherit;font-size:13px;line-height:1.4;padding:4px 10px;border-radius:999px;cursor:pointer;transition:color .2s,background .2s}
.langs button:hover{color:var(--fg)}
.langs button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.langsel{display:none;appearance:none;-webkit-appearance:none;font:inherit;font-size:13px;line-height:1.3;color:var(--fg);background:transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23aab' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 10px center;border:1px solid var(--line);border-radius:999px;padding:6px 26px 6px 12px;cursor:pointer}
.langsel option{color:#000}
html[lang="ja"]{--sans:'Inter','Noto Sans JP','Hiragino Sans','Yu Gothic','Meiryo',system-ui,sans-serif}
html[lang="en"] .lead{max-width:40em}

/* light bands: same components, light tokens, to break up the long dark page */
.sec.light{--bg:#F2F3F5;--panel:#FFFFFF;--panel2:#E7EAEE;--line:#D5DAE1;--fg:#0B1220;--mute:#4B5563;--dim:#9AA3AF;--faint:#5E6977;background:var(--bg);color:var(--fg);color-scheme:light}
.sec.light .card{box-shadow:0 1px 0 rgba(11,18,32,.04),0 8px 24px -16px rgba(11,18,32,.18)}
.sec.light .stats b{color:var(--fg)}
/* one grade for every photo, so studio renders and daylight aerials read as one set */
img[src^="/img/"]:not(.bgimg):not([src*="logo"]){filter:saturate(.84) contrast(1.04)}
img[src^="/img/"][src$="cluster.jpg"]:not(.bgimg),img[src^="/img/"][src$="campus.jpg"]:not(.bgimg),img[src^="/img/"][src$="retrofit.jpg"]:not(.bgimg){filter:saturate(.66) contrast(1.08) brightness(.86)}
/* paragraphs avoid one-word last lines */
p,li{text-wrap:pretty}
/* Japanese: kanji and kana read larger than Latin at the same size, and negative tracking crowds kana */
:where(html[lang="ja"]) h1{font-size:clamp(32px,5.6vw,72px)}
:where(html[lang="ja"]) h2{font-size:clamp(26px,3.9vw,49px)}
html[lang="ja"] :is(h1,h2,h3){letter-spacing:0;font-feature-settings:"palt" 1}
html[lang="ja"] :is(p,li,h1,h2,h3,.lead,.note){word-break:auto-phrase;line-break:strict;overflow-wrap:anywhere}
/* phone header: logo and button on one row, the nav scrolls sideways underneath */
@media (max-width:760px){
  .top .wrap{gap:8px 8px;padding-block:10px}
  .brand img{height:30px}
  .top .wrap>.btn{margin-left:auto;padding:8px 14px;font-size:14px}
  .nav{order:3;flex-basis:100%;flex-wrap:nowrap;overflow-x:auto;margin-inline:0;gap:22px;padding-bottom:4px;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .nav>a{white-space:nowrap}
  .ddbtn{padding:4px 0;margin:0;white-space:nowrap}
  .dd.smdd{position:static}
  .ddmenu.sm{left:16px;right:16px;width:auto;top:100%}
  .top .wrap>.langs{display:none}
  .top .wrap>.langsel{display:inline-block;margin-left:auto}
  .top .wrap>.btn{margin-left:0}
  .brand img{height:24px}
  .langsel{font-size:12.5px;padding:6px 22px 6px 10px;background-position:right 8px center}
  .ddmenu{grid-template-columns:minmax(0,1fr);gap:4px;padding:6px}
  .ddmenu img{display:none}
  .nav .ddmenu a.gl{min-height:0}
}
@media (max-width:760px){
  /* phones: the top bar keeps its title and link only, one line instead of three */
  .bar .wrap>span:not(.dot){display:none}
}
@media (max-width:380px){
  .top .wrap>.btn{padding:7px 10px;font-size:13px}
  .brand img{height:20px}
}

/* hero */
.hero{position:relative;overflow:hidden;margin-top:-70px}
.hero .bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;animation:drift 26s ease-in-out infinite alternate;transform-origin:60% 60%;filter:saturate(.45) brightness(.92)}
.pill{display:inline-flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px 10px;padding:7px 16px 7px 13px;border-radius:999px;background:rgba(13,18,25,.62);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);text-decoration:none;font-size:14px;line-height:1.5;color:var(--fg);animation:rise .9s cubic-bezier(.2,.7,.2,1) both;transition:border-color .25s}
.pill:hover{border-color:var(--accent)}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:ping 2.4s infinite}
.pill b{font-weight:500}
.pill .sep{color:var(--faint)}
@keyframes drift{from{transform:scale(1.04)}to{transform:scale(1.2) translate(-2%,-1.5%)}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,12,.72) 0%,rgba(4,7,12,.35) 40%,var(--bg) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:190px 150px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:26px}
.hero h1 span{display:block;animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.hero h1 span:nth-child(2){animation-delay:.14s}
@keyframes rise{from{transform:translateY(28px);opacity:.01}to{transform:none;opacity:1}}
.cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* sections and panels */
.sec{padding-block:clamp(56px,8vw,110px)}
.panel{background:var(--panel);border-radius:var(--r);padding:clamp(24px,4.5vw,60px)}
.center{display:flex;flex-direction:column;align-items:center;text-align:center;gap:18px;margin-bottom:44px}
.stack{display:flex;flex-direction:column;gap:32px}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:36px 56px;align-items:end}
.split>*{min-width:0}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr))}
.g3>*,.g4>*{min-width:0}

/* word tabs */
.words{display:flex;flex-wrap:wrap;gap:6px 30px}
.words button{background:none;border:0;padding:0;font:inherit;font-size:clamp(24px,3.2vw,40px);font-weight:500;letter-spacing:-.01em;color:var(--faint);cursor:pointer;transition:color .25s}
.words button:hover{color:var(--mute)}
.words button[aria-selected="true"]{color:var(--fg)}
.words.sm button{font-size:clamp(17px,1.8vw,21px)}
.words.sm button[aria-selected="true"]{color:var(--accent)}
[data-panel]{animation:swap .5s cubic-bezier(.2,.7,.2,1) both}
@keyframes swap{from{opacity:.01;transform:translateY(14px)}to{opacity:1;transform:none}}
.tabhead{min-height:3.5em}

/* numbers, bars, slider */
.figure{font-size:clamp(44px,5.4vw,72px);font-weight:400;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.cmp{display:flex;flex-direction:column;gap:26px}
.cmp .row{display:flex;flex-direction:column;gap:10px;color:var(--mute)}
.cmp .row.on{color:var(--accent)}
.cmp .lab{display:flex;justify-content:space-between;gap:16px;font-size:17px}
.track{height:8px;border-radius:8px;background:var(--panel2);overflow:hidden}
.track i{display:block;height:100%;width:0;border-radius:8px;background:var(--dim);transition:width 1.6s cubic-bezier(.2,.7,.2,1)}
.row.on .track i{background:var(--accent)}
input[type=range]{width:100%;accent-color:var(--accent);height:28px;margin:0}
.scale{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--faint)}
.cfg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.cfg small{display:block;font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.08em}
.cfg b{font-weight:400;font-size:clamp(17px,2vw,24px)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(150px,100%),1fr));gap:36px 24px;text-align:center}
.stats b{display:block;font-weight:400;font-size:clamp(30px,3.6vw,48px);line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;white-space:nowrap}
.stats span{color:var(--mute);font-size:15px}
.stats b span{color:inherit;font-size:inherit}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:22px}
.steps div{border-top:2px solid var(--line);padding-top:16px;display:flex;flex-direction:column;gap:6px;transition:border-color .4s}
.steps div.lit{border-top-color:var(--accent)}
.steps small{font-family:var(--mono);color:var(--faint);font-size:12px}
.steps p{color:var(--mute);font-size:14px}

/* product switcher */
.stage{position:relative;border-radius:var(--r);overflow:hidden;background:var(--panel);aspect-ratio:2.24/1;max-width:100%}
.stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.05);transition:opacity .7s,transform 1.4s cubic-bezier(.2,.7,.2,1)}
.stage img.on{opacity:1;transform:none}
.bigch{font-size:clamp(90px,13vw,170px);font-weight:900;line-height:.9;font-family:'Noto Sans SC',sans-serif}
.card{background:var(--panel);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;gap:10px;text-decoration:none;transition:background .25s,transform .25s}
a.card:hover{background:var(--panel2);transform:translateY(-3px)}
.card p{color:var(--mute);font-size:15px}
.card .go{margin-top:auto;font-size:15px;padding-top:8px}
.shot{width:100%;display:block;border-radius:var(--r)}
.scene img{aspect-ratio:1/1;object-fit:cover;width:100%;display:block;border-radius:var(--r)}
figure{margin:0;display:flex;flex-direction:column;gap:10px}
figcaption{font-size:14px;color:var(--mute)}

/* product page hero */
.phero{position:relative;overflow:hidden;margin-top:-70px}
.phero img{width:100%;height:clamp(300px,46vw,560px);object-fit:cover;display:block;animation:drift 30s ease-in-out infinite alternate}
.phero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,7,12,.55),transparent 35%,var(--bg) 96%)}
.ptitle{display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px;margin-top:-70px;position:relative;z-index:1;padding-bottom:56px}

/* spec rows and tables */
.rows{display:flex;flex-direction:column}
.rows div{display:flex;justify-content:space-between;gap:24px;padding:15px 0;border-bottom:1px solid var(--line)}
.rows div:last-child{border-bottom:0}
.rows span{color:var(--mute)}
.rows b{font-weight:400;text-align:right;font-variant-numeric:tabular-nums}
.tbl{overflow-x:auto;background:var(--panel);border-radius:var(--r)}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top;font-weight:400}
tr:last-child td,tr:last-child th{border-bottom:0}
thead th{color:var(--faint);font-family:var(--mono);font-size:11px;letter-spacing:.1em;white-space:nowrap}
tbody th{white-space:nowrap;color:var(--fg)}
tbody td{color:var(--mute)}
ul.plain{margin:0;padding:0;list-style:none}
ul.plain li{padding:13px 0;border-bottom:1px solid var(--line);color:var(--mute)}
ul.plain li:last-child{border-bottom:0}

/* form */
form{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr))}
label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--mute);min-width:0}
input:not([type=range]):not([type=radio]):not([type=checkbox]),select,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:11px 12px;min-width:0}
[aria-invalid="true"]{border-color:#FF6B61!important}
textarea{min-height:96px;resize:vertical}
.full{grid-column:1/-1}
/* footer: brand column plus three link columns */
.foot{border-top:1px solid var(--line);margin-top:24px}
.fcols{display:grid;grid-template-columns:minmax(min(220px,100%),1.6fr) repeat(3,minmax(120px,1fr));gap:36px 32px;padding-block:56px 40px}
.fcols>div{display:flex;flex-direction:column;gap:10px;min-width:0}
.fcols h4{margin:0 0 4px;font-family:var(--mono);font-size:11px;font-weight:400;letter-spacing:.14em;color:var(--faint)}
.fcols a{color:var(--mute);text-decoration:none;font-size:15px;width:fit-content}
.fcols a:hover{color:var(--fg)}
.fcols a.btn{color:var(--accent-ink);margin-top:8px}
.fbrand img{height:34px;width:auto;align-self:flex-start}
.fbrand p{color:var(--mute);font-size:15px}
.fbase{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 32px;padding-block:22px 36px;border-top:1px solid var(--line);font-size:13px;color:var(--faint)}
@media (max-width:760px){.fcols{grid-template-columns:repeat(2,minmax(0,1fr))}.fbrand{grid-column:1/-1}}

[hidden]{display:none!important}
html.i18n-pending body{visibility:hidden}
html:not([lang="zh-CN"]) .only-zh,html[lang="zh-CN"] .only-intl{display:none!important}
html:not([lang="zh-CN"]) .opts label.opt:has(input[value="cn"]){order:3}html:not([lang="zh-CN"]) .opts label.opt:has(input[value="ot"]){order:4}

/* overseas compliance: route diagram, AVL row, product-page strip */
.glob{position:relative;overflow:hidden;background:radial-gradient(110% 90% at 100% 0%,rgba(229,40,31,.17),transparent 55%),var(--panel)}
.route{width:100%;height:auto;display:block;overflow:visible}
.route text{font-family:var(--sans);fill:var(--mute)}
.route .lab{fill:var(--fg);font-size:22px}
.route .sm{font-family:var(--mono);font-size:15px;letter-spacing:.06em;fill:var(--faint)}
.route .tag{font-family:var(--mono);font-size:14px;letter-spacing:.12em;fill:var(--accent)}
.route .arc{stroke-dasharray:6 10;animation:flowdash 1.6s linear infinite}
@keyframes flowdash{to{stroke-dashoffset:-32}}
.route .pulse{transform-box:fill-box;transform-origin:center;animation:pulse 2.6s ease-out infinite}
@keyframes pulse{from{transform:scale(1);opacity:.75}to{transform:scale(3.4);opacity:0}}
.avlrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:22px 24px;margin-top:clamp(28px,4vw,48px);padding-top:clamp(24px,3vw,36px);border-top:1px solid var(--line)}
.avlrow div{display:flex;flex-direction:column;gap:4px;min-width:0}
.avlrow b{font-weight:400;font-size:clamp(22px,2.4vw,30px);letter-spacing:-.01em;line-height:1.25}
.avlrow span{color:var(--mute);font-size:14px}
.avlrow div:first-child b{color:var(--accent)}
.strip{display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px;margin-top:44px;padding:16px 22px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);text-decoration:none;transition:border-color .25s,background .25s}
.strip:hover{border-color:var(--accent);background:var(--panel2)}
.strip .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.strip b{font-weight:500}
.strip span{color:var(--mute)}
.strip .go{margin-left:auto;color:var(--fg)}

/* input → delivery → output diagram */
.flow{display:grid;grid-template-columns:minmax(0,1fr) 56px minmax(0,1.3fr) 56px minmax(0,1fr);align-items:stretch}
.fcol{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;gap:16px;min-width:0}
.fcol.core{border-color:var(--accent);background:linear-gradient(180deg,rgba(229,40,31,.11),transparent 70%),var(--panel)}
.fcol ul{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.fcol li{font-size:14px;line-height:1.45;padding:6px 12px;border-radius:999px;background:var(--panel2)}
.fcol.core li{background:rgba(229,40,31,.15)}
.farrow{position:relative;display:flex;align-items:center}
.farrow i{position:relative;display:block;width:100%;height:2px;background:var(--line);overflow:hidden}
.farrow i::after{content:"";position:absolute;top:0;bottom:0;left:0;width:40%;background:linear-gradient(90deg,transparent,var(--accent),transparent);animation:slide 1.8s linear infinite}
.farrow::after{content:"";position:absolute;right:3px;top:50%;width:8px;height:8px;border-top:2px solid var(--accent);border-right:2px solid var(--accent);transform:translateY(-50%) rotate(45deg)}
@keyframes slide{from{transform:translateX(-100%)}to{transform:translateX(250%)}}
@keyframes slidev{from{transform:translateY(-100%)}to{transform:translateY(250%)}}
@media (max-width:860px){
  .flow{grid-template-columns:minmax(0,1fr)}
  .farrow{height:46px;justify-content:center}
  .farrow i{width:2px;height:100%}
  .farrow i::after{top:0;left:0;right:0;bottom:auto;width:auto;height:40%;background:linear-gradient(180deg,transparent,var(--accent),transparent);animation-name:slidev}
  .farrow::after{right:auto;left:50%;top:auto;bottom:4px;transform:translateX(-50%) rotate(135deg)}
}

/* week-by-week gantt */
.gantt{display:flex;flex-direction:column;gap:18px}
.gantt .g,.weeks{display:grid;grid-template-columns:minmax(130px,210px) minmax(0,1fr);gap:6px 22px;align-items:center}
.gantt .g>span{color:var(--mute);font-size:15px;line-height:1.4}
.gantt .g>span small{display:block;font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.08em}
.gantt .g.on>span{color:var(--fg)}
.gantt .t{position:relative;height:10px;border-radius:10px;background:var(--panel2)}
.gantt .t i{position:absolute;top:0;bottom:0;width:0;border-radius:10px;background:var(--dim);transition:width 1.1s cubic-bezier(.2,.7,.2,1)}
.gantt .g.on .t i{background:var(--accent)}
.gantt .g:nth-child(2) .t i{transition-delay:.15s}.gantt .g:nth-child(3) .t i{transition-delay:.3s}.gantt .g:nth-child(4) .t i{transition-delay:.45s}.gantt .g:nth-child(5) .t i{transition-delay:.6s}
.weeks div{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--faint)}
@media (max-width:640px){.gantt .g,.weeks{grid-template-columns:minmax(0,1fr)}.weeks>span{display:none}}

/* digital twin: the AI Rack Hub model runs in its own shadow root; full screen is a fixed overlay */
#twinSec{scroll-margin-top:84px}
@media (max-width:760px){#twinSec{scroll-margin-top:96px}}
.twinhost{position:relative;height:clamp(480px,56vw,700px);border-radius:var(--r);overflow:hidden;background:#0f1113;isolation:isolate}
.twinhost.full{position:fixed;inset:0;height:auto;z-index:1000;border-radius:0}
html.twin-lock,html.twin-lock body{overflow:hidden}
.twin-ph{position:absolute;inset:0;display:grid;place-items:center;margin:0;color:var(--faint);font-family:var(--mono);font-size:12px;letter-spacing:.14em}
.twinbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 28px;margin-top:16px}
.chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.chips>small{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--faint);margin-right:4px}
.chip{font:inherit;font-size:14px;line-height:1.4;color:var(--mute);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:7px 14px;cursor:pointer;transition:color .2s,border-color .2s,background .2s}
.chip:hover:not(:disabled){color:var(--fg);border-color:var(--dim)}
.chip[aria-pressed="true"]{color:var(--fg);border-color:var(--accent);background:rgba(229,40,31,.15)}
.chip:disabled{opacity:.45;cursor:progress}
.twincta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;margin-top:22px;padding:22px 26px;border-radius:var(--r);border:1px solid var(--line);background:linear-gradient(100deg,rgba(242,183,5,.11),transparent 55%),var(--panel)}
.twincta .stack{gap:6px;max-width:46em}
.twincta p{color:var(--mute);font-size:15px}

/* three-step configurator */
.cfgr{display:flex;flex-direction:column;gap:18px}
.cfg-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none}
.cfg-steps button{width:100%;text-align:left;background:none;border:0;border-top:2px solid var(--line);padding:12px 0 0;font:inherit;font-size:16px;color:var(--faint);cursor:pointer;display:flex;flex-direction:column;gap:2px;transition:color .25s,border-color .25s}
.cfg-steps button small{font-family:var(--mono);font-size:11px;letter-spacing:.1em}
.cfg-steps button.done{color:var(--mute);border-top-color:var(--mute)}
.cfg-steps button[aria-current="step"]{color:var(--fg);border-top-color:var(--accent)}
.cfg-steps button:disabled{cursor:default}
.cfg-body{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px;align-items:start}
.cfg-main{display:flex;flex-direction:column;gap:26px;min-height:440px}
.cfg-main [data-step]{display:flex;flex-direction:column;gap:22px;animation:swap .45s cubic-bezier(.2,.7,.2,1) both}
.cfg-nav{display:flex;gap:12px;margin-top:auto;padding-top:22px;border-top:1px solid var(--line)}
.cfg-side{position:sticky;top:96px;padding:26px}
.kv{display:flex;flex-direction:column;margin-top:6px}
.kv div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv div:last-child{border-bottom:0}
.kv span{color:var(--mute);flex-shrink:0}
.kv b{font-weight:400;text-align:right}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(230px,100%),1fr));gap:12px}
label.opt{position:relative;display:flex;flex-direction:column;gap:6px;padding:18px 18px 18px 48px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--fg);font-size:16px;cursor:pointer;transition:border-color .2s,background .2s}
label.opt:hover{border-color:var(--dim)}
.opt input{position:absolute;left:18px;top:22px;width:16px;height:16px;margin:0;accent-color:var(--accent)}
.opt b{font-weight:500}
.opt span{color:var(--mute);font-size:14px;line-height:1.55}
label.opt.on{border-color:var(--accent);background:rgba(229,40,31,.08)}
.warn{padding:12px 14px;border-radius:10px;background:rgba(240,162,30,.1);border:1px solid rgba(240,162,30,.35);color:#F3C982;font-size:14px}
.rep{display:flex;flex-direction:column;gap:20px}
.rep ul.plain li{padding:10px 0}
form.lead-f{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:22px}
label.consent{flex-direction:row;align-items:flex-start;gap:10px;color:var(--mute)}
.consent input{margin-top:5px;accent-color:var(--accent);flex-shrink:0}
.act{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px}
.formmsg{font-size:14px;color:var(--mute)}
.formmsg.err{color:#FF6B61}
.okbox{display:flex;flex-direction:column;gap:12px;padding:22px;border-radius:12px;border:1px solid rgba(61,189,112,.4);background:rgba(61,189,112,.07)}
.okbox h3{color:#7BE0A4}
.okbox p{color:var(--mute);font-size:15px}
.demo-note{font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:var(--faint)}

/* time-to-revenue calculator */
.roi-in{gap:24px}
.roi-in label{gap:10px}
.roi-in .lab{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.roi-in output{font-family:var(--mono);color:var(--fg);font-size:13px}
.money{display:flex;gap:10px}
.money input{flex:1;min-width:0}
.roi-out .figure{font-size:clamp(38px,4.6vw,62px)}
.roichart{width:100%;height:auto;display:block;overflow:visible}
.roichart text{font-family:var(--mono);font-size:12px;fill:var(--faint)}
.roichart .t1{font-family:var(--sans);font-size:14px;fill:var(--fg)}
.roichart .t2{font-family:var(--sans);font-size:14px;fill:var(--mute)}

/* news and blog */
a.post-card{padding:12px 12px 22px;gap:8px}
.post-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;display:block;margin-bottom:8px;background:#fff}
.post-card .mono{font-size:11px;padding:0 6px}
.post-card h3,.post-card p,.post-card .go{padding:0 6px}
.post-card h3{font-size:19px}
.post-card p{font-size:14px}
.post-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 14px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--mute)}
.prose{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:#D5DBE2}
.prose h2{font-size:clamp(22px,2.6vw,28px);margin:44px 0 12px;color:var(--fg)}
.prose p{margin:0 0 18px}
.prose ul{margin:0 0 20px;padding-left:22px}
.prose li{margin:6px 0}
.prose strong{color:var(--fg);font-weight:500}
.prose .callout{border-left:3px solid var(--accent);padding:6px 0 6px 18px;margin:26px 0;color:var(--mute);font-size:15px}
.post-cta{max-width:760px;margin:48px auto 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px}
.post-cta h3{font-weight:400}
.post-nav{max-width:760px;margin:30px auto 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px}
.post-nav a{color:var(--mute);text-decoration:none;font-size:15px}
.post-nav a:hover{color:var(--fg)}

/* handbook band */
.dlband{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px 56px;align-items:center}
.covers{position:relative;aspect-ratio:16/13}
.covers img{position:absolute;width:50%;aspect-ratio:3/4;object-fit:cover;border-radius:10px;border:1px solid var(--line);box-shadow:0 24px 50px rgba(0,0,0,.55);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.covers img:nth-child(1){left:2%;top:10%;transform:rotate(-7deg)}
.covers img:nth-child(2){left:22%;top:2%;transform:rotate(1deg);z-index:1}
.covers img:nth-child(3){left:42%;top:10%;transform:rotate(8deg)}
.dlband:hover .covers img:nth-child(1){transform:rotate(-10deg) translateX(-10px)}
.dlband:hover .covers img:nth-child(3){transform:rotate(11deg) translateX(10px)}

/* dialogs */
dialog.dlg{background:var(--panel);color:var(--fg);border:1px solid var(--line);border-radius:var(--r);padding:0;width:min(660px,calc(100vw - 24px));max-height:calc(100dvh - 24px);box-shadow:0 40px 80px rgba(0,0,0,.6)}
dialog.dlg::backdrop{background:rgba(2,4,8,.68);backdrop-filter:blur(4px)}
dialog.dlg.wide{width:min(1080px,calc(100vw - 24px))}
.dlg-in{padding:clamp(20px,4vw,34px);display:flex;flex-direction:column;gap:20px}
.dlg-h{position:relative;display:flex;flex-direction:column;gap:8px;padding-right:44px}
.dlg-h h3{font-size:clamp(22px,3vw,28px);font-weight:400}
.dlg-x{position:absolute;right:-8px;top:-8px;background:none;border:0;color:var(--mute);font-size:18px;line-height:1;padding:9px;border-radius:6px;cursor:pointer}
.dlg-x:hover{color:var(--fg);background:rgba(255,255,255,.06)}
fieldset.seg2{display:flex;flex-wrap:wrap;gap:8px;border:0;margin:0;padding:0;min-width:0}
.seg2 legend{font-size:14px;color:var(--mute);margin-bottom:8px;padding:0}
.seg2 label{position:relative;flex-direction:row;font-size:14px}
.seg2 input{position:absolute;opacity:0;width:1px;height:1px}
.seg2 span{display:inline-block;padding:7px 14px;border-radius:999px;border:1px solid var(--line);color:var(--mute);cursor:pointer;transition:border-color .2s,color .2s}
.seg2 input:checked+span{border-color:var(--accent);color:var(--fg);background:rgba(229,40,31,.15)}
.seg2 input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}

/* lead inbox, shown only to the owner and editors */
.leadsbtn{position:fixed;left:12px;bottom:12px;z-index:40;display:inline-flex;align-items:center;gap:7px;padding:6px 10px 6px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(13,18,25,.94);color:var(--fg);font:inherit;font-size:13px;cursor:pointer;box-shadow:0 10px 30px rgba(0,0,0,.45)}
.leadsbtn b{font-weight:500;color:#fff;background:var(--accent);border-radius:999px;padding:0 8px;font-size:12px;line-height:20px}
.leadrow{display:grid;grid-template-columns:140px minmax(0,1.1fr) minmax(0,2fr) auto;gap:6px 18px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;align-items:start}
.leadrow:last-child{border-bottom:0}
.leadrow small{display:block;color:var(--faint);font-family:var(--mono);font-size:11px}
.leadrow .det{color:var(--mute);display:flex;flex-direction:column;gap:4px}
.tag{display:inline-block;font-size:12px;padding:1px 8px;margin-right:6px;border-radius:999px;background:var(--panel2);color:var(--fg)}
.leadrow button{font:inherit;font-size:13px;color:var(--mute);background:none;border:1px solid var(--line);border-radius:6px;padding:4px 10px;cursor:pointer}
.leadrow button.arm{color:#FF6B61;border-color:#FF6B61}
@media (max-width:860px){.cfg-body,.dlband{grid-template-columns:minmax(0,1fr)}.cfg-side{position:static}.leadrow{grid-template-columns:minmax(0,1fr)}}
@media (max-width:560px){.cfg-steps button{font-size:14px}}
/* scroll reveal: only elements below the first screen are held back, and only when script runs */
.pre{opacity:.01;transform:translateY(26px)}
.rv{transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero .bgimg,.phero img,.hero h1 span,[data-panel],.pill,.pill i,.bar .dot,.route .arc,.route .pulse,.farrow i::after{animation:none}
  .route .movers{display:none}
  .pre{opacity:1;transform:none}
  .track i,.gantt .t i,.stage img,.rv{transition:none}
}
/* v11: stat units, world map, region tabs, privacy notice */
.stats b small{font-size:.44em;font-weight:400;letter-spacing:0;margin-left:.12em;opacity:.72}
.rows span{flex-shrink:0;max-width:45%}
.wm-defs{position:absolute;width:0;height:0;overflow:hidden}
.wm-box{display:flex;flex-direction:column;gap:16px;min-width:0}
.wmap{width:100%;height:auto;display:block;overflow:visible}
.wm-dots{fill:none;stroke:#334050;stroke-width:2.3;stroke-linecap:round}
.wmap .arc{fill:none;stroke:rgba(229,40,31,.7);stroke-width:1.2;stroke-dasharray:3 5;animation:flowdash 2.4s linear infinite}
.wmap .movers circle,.wmap .hubdot{fill:#F4F6F8}
.wmap .lab{font-family:var(--sans);font-size:16px;fill:var(--mute);paint-order:stroke;stroke:var(--panel);stroke-width:5px;stroke-linejoin:round;letter-spacing:0}
.wmap .hublab{fill:var(--fg)}
.wm-mk{cursor:pointer;outline:none}
.wm-mk .hit{fill:transparent}
.wm-mk .core{fill:var(--accent)}
.wm-mk .pulse{fill:none;stroke:var(--accent);stroke-width:1.5;transform-box:fill-box;transform-origin:center;animation:pulse 2.6s ease-out infinite}
.wm-mk.on .core{fill:#fff;stroke:var(--accent);stroke-width:2.5}
.wm-mk.on .lab,.wm-mk:hover .lab,.wm-mk:focus-visible .lab{fill:var(--fg)}
.wm-mk:focus-visible .core{stroke:#fff;stroke-width:2}
.wm-big{max-width:1100px;margin-inline:auto}
.wm-big .wmap .lab{font-size:12px;stroke-width:4px}
.wm-hint{text-align:center;margin-top:16px}
.wm-tick{display:grid;border-top:1px solid var(--line);padding-top:14px;min-height:64px}
.wm-tick p{grid-area:1/1;display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 12px;opacity:0;visibility:hidden;transition:opacity .22s,visibility 0s .22s}
.wm-tick p.on{opacity:1;visibility:visible;transition:opacity .35s .22s,visibility 0s .22s}
.wm-tick b{font-weight:500;font-size:17px}
.wm-tick b::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:9px;position:relative;top:-2px}
.wm-tick span{color:var(--mute);font-size:14px;line-height:1.55}
.regtabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:26px}
.regtabs button{font:inherit;font-size:15px;line-height:1.4;color:var(--mute);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;transition:color .2s,border-color .2s,background .2s}
.regtabs button:hover{color:var(--fg);border-color:var(--dim)}
.regtabs button[aria-selected="true"]{color:var(--fg);border-color:var(--accent);background:rgba(229,40,31,.15)}
.grid.g4x{grid-template-columns:1fr}
@media (min-width:600px){.grid.g4x{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.grid.g4x{grid-template-columns:repeat(4,minmax(0,1fr))}}
.opts.regs{grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr))}
.opts.regs label.opt{padding:14px 14px 14px 42px;font-size:15px}
.opts.regs .opt input{left:15px;top:18px}
.opts.regs .opt span{font-size:13px}
.privline a{color:var(--fg)}
.fbase a{color:var(--faint)}
.fbase a:hover{color:var(--fg)}
.foot .tm{font-size:12px;color:var(--faint);margin:-22px 0 0;padding-bottom:30px}
html:not([lang="zh-CN"]) .pname{display:block;font-size:.42em;letter-spacing:.01em;margin-bottom:.35em}
@media (max-width:640px){.wmap .lab{display:none}.wm-tick{min-height:86px}.rows div{flex-direction:column;gap:2px}.rows span{max-width:none}.rows b{text-align:left}}
@media (prefers-reduced-motion: reduce){.wmap .arc,.wm-mk .pulse{animation:none}.wmap .movers{display:none}.wm-tick p,.wm-tick p.on{transition:none}}
/* v12: mail links */
.formmsg a,.mailline a,.prose a[href^="mailto"]{color:var(--fg);text-decoration:underline;text-underline-offset:3px;word-break:break-all}
.formmsg a:hover,.mailline a:hover,.prose a[href^="mailto"]:hover{color:#fff}
.demo-note:empty{display:none}
html:not([lang="zh-CN"]) .mailline a,html:not([lang="zh-CN"]) .prose a[href^="mailto"],html:not([lang="zh-CN"]) .privline a{margin-left:.3em}
/* v13: products as a continuous strip (pauses on hover or keyboard focus; static row when motion is reduced) */
.prods .prods-h{margin-bottom:36px}
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
.mq-track{display:flex;gap:24px;width:max-content;animation:mq 54s linear infinite}
.marquee:hover .mq-track,.marquee:focus-within .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(calc(-50% - 12px))}}
.mq-card{flex:0 0 auto;width:min(540px,80vw);display:flex;flex-direction:column;border-radius:var(--r);overflow:hidden;background:var(--panel);border:1px solid var(--line);color:inherit;text-decoration:none;transition:border-color .25s}
.mq-card:hover,.mq-card:focus-visible{border-color:var(--dim)}
.mq-card img{display:block;width:100%;aspect-ratio:2.1/1;object-fit:cover}
.mq-body{display:flex;flex-direction:column;gap:10px;padding:22px 24px 24px;flex:1}
.mq-body h3{margin:0}
.mq-body p{margin:0}
.mq-body p:not(.mono){color:var(--mute);font-size:15px;line-height:1.65}
.mq-more{margin-top:auto;padding-top:6px;color:var(--fg);font-size:15px}
.mq-more .ar{color:var(--accent)}
@media (prefers-reduced-motion: reduce){.marquee{-webkit-mask-image:none;mask-image:none}.mq-track{animation:none;width:auto;flex-wrap:wrap;justify-content:center;padding:0 24px}.mq-track [aria-hidden="true"]{display:none}}