:root{
  --bg:#0F172A; --bg2:#0b1222; --fg:#F8FAFC; --mut:#94A3B8;
  --cy:#06B6D4; --vi:#8B5CF6;
  --card:rgba(255,255,255,.05); --line:rgba(255,255,255,.10);
  --glass:rgba(15,23,42,.62);
  --r:24px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Arial,"PingFang SC","Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans CJK SC","Microsoft YaHei","Yu Gothic UI",Meiryo,sans-serif;
  --out:cubic-bezier(.23,1,.32,1);
  --io:cubic-bezier(.77,0,.175,1);
  --spring:cubic-bezier(.32,.72,0,1);
}
:root[data-theme="light"]{
  --bg:#F5F7FB; --bg2:#fff; --fg:#0F172A; --mut:#475569;
  --card:rgba(255,255,255,.8); --line:rgba(15,23,42,.10); --glass:rgba(255,255,255,.72);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--font);background:var(--bg);color:var(--fg);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;-webkit-tap-highlight-color:transparent}
:lang(zh) h1,:lang(zh) h2,:lang(ja) h1,:lang(ja) h2{letter-spacing:0}
:lang(ja){line-break:strict}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cy);outline-offset:3px;border-radius:8px}
.defs{position:absolute}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:99;background:var(--bg2);padding:8px 12px;border-radius:8px}
.wrap{width:min(1160px,100% - 40px);margin-inline:auto}
.section{padding:clamp(72px,11vw,140px) 0}
.grad{background:linear-gradient(110deg,#22d3ee,var(--vi) 60%,#c084fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

.glass{background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(22px) saturate(1.7);-webkit-backdrop-filter:blur(22px) saturate(1.7);box-shadow:0 24px 60px -24px rgba(0,0,0,.5)}

/* nav */
.nav-wrap{position:fixed;top:12px;left:0;right:0;z-index:50;display:flex;justify-content:center;padding:0 12px}
.nav{display:flex;align-items:center;gap:8px;padding:7px 8px 7px 16px;border-radius:999px;width:min(820px,100%)}
.brand{display:flex;align-items:center;gap:7px;font-weight:700;font-size:20px;letter-spacing:-.04em;margin-right:auto}
.brand i{color:var(--cy);font-style:normal}
.kmark{width:22px;height:24px}
.links{display:flex;gap:2px}
.links a{padding:7px 12px;border-radius:999px;font-size:14px;color:var(--mut);transition:background .2s,color .2s}
.chip{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:transparent;cursor:pointer;font-size:13px;font-weight:600;transition:transform .16s var(--out),background .2s}
.chip .ic{width:16px;height:16px}
.chip.round{width:36px;padding:0;justify-content:center}
.chip:active{transform:scale(.94)}
@media(hover:hover) and (pointer:fine){.links a:hover{background:var(--card);color:var(--fg)}.chip:hover{background:var(--card)}}
@media(max-width:760px){.links{display:none}}
@media(max-width:520px){.nav .btn-sm{display:none}}
.lang{position:relative}
.menu{position:absolute;right:0;top:calc(100% + 8px);min-width:180px;padding:6px;border-radius:16px;transform-origin:top right;transition:opacity .18s var(--out),transform .18s var(--out)}
.menu[hidden]{display:block;opacity:0;transform:scale(.96) translateY(-4px);pointer-events:none;visibility:hidden}
.menu button{width:100%;text-align:left;padding:10px 12px;border:0;border-radius:10px;background:transparent;cursor:pointer;font-size:14px}
.menu button[aria-current=true]{background:linear-gradient(120deg,rgba(6,182,212,.22),rgba(139,92,246,.22))}
@media(hover:hover) and (pointer:fine){.menu button:hover{background:var(--card)}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:15px;cursor:pointer;transition:transform .16s var(--out),box-shadow .25s,background .2s}
.btn:active{transform:scale(.97)}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px}
.btn-primary{background:linear-gradient(120deg,var(--cy),var(--vi));color:#fff;box-shadow:0 10px 30px -10px var(--vi)}
.btn-ghost{border-color:var(--line);background:var(--card);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
@media(hover:hover) and (pointer:fine){.btn-primary:hover{box-shadow:0 14px 40px -8px var(--cy)}.btn-ghost:hover{background:var(--line)}}

/* hero: siempre de noche, también en tema claro */
.hero{--fg:#F8FAFC;--mut:#cbd5e1;--line:rgba(255,255,255,.16);--card:rgba(255,255,255,.07);
  position:relative;min-height:min(100svh,1000px);color:var(--fg);overflow:hidden;isolation:isolate;
  background:radial-gradient(1100px 600px at 78% 8%,rgba(139,92,246,.28),transparent 60%),radial-gradient(900px 520px at 8% 0%,rgba(6,182,212,.16),transparent 60%),linear-gradient(180deg,#040814 0%,#0a1330 55%,#141d42 100%)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-2}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(4,8,20,.6),rgba(4,8,20,.15) 55%,transparent 75%);pointer-events:none}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:70px;background:linear-gradient(transparent,var(--bg));pointer-events:none}
.hero-copy{padding-top:clamp(120px,19vh,190px);will-change:transform,opacity}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid var(--line);background:var(--card);border-radius:999px;font-size:13px;color:var(--mut);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cy);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(6,182,212,.7)}70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
h1{font-size:clamp(42px,7vw,92px);line-height:.98;letter-spacing:-.05em;font-weight:800;margin:22px 0 22px;text-shadow:0 4px 40px rgba(4,8,20,.6)}
h1 span{display:block;padding-bottom:.06em}
.lead{font-size:clamp(16px,1.5vw,19px);color:var(--mut);max-width:56ch;text-shadow:0 2px 20px rgba(4,8,20,.8)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.rise{animation:rise 1s var(--out) backwards}
.pill.rise{animation-delay:.05s}.l1{animation-delay:.15s}.l2{animation-delay:.28s}.lead.rise{animation-delay:.42s}.cta.rise{animation-delay:.55s}
@keyframes rise{from{opacity:0;transform:translateY(28px);filter:blur(10px)}}
.scroll-hint{position:absolute;left:50%;bottom:26px;width:24px;height:38px;margin-left:-12px;border:1.5px solid rgba(255,255,255,.35);border-radius:14px}
.scroll-hint i{position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;border-radius:2px;background:#fff;animation:wheel 1.8s var(--out) infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-3px)}30%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

/* marquee */
.marquee{overflow:hidden;border-block:1px solid var(--line);padding:18px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.track{display:flex;width:max-content;animation:marq 40s linear infinite}
.track span{padding:0 28px;font-weight:600;font-size:15px;color:var(--mut);white-space:nowrap;position:relative}
.track span::after{content:"";position:absolute;right:-3px;top:50%;width:5px;height:5px;margin-top:-2.5px;border-radius:50%;background:linear-gradient(135deg,var(--cy),var(--vi))}
@keyframes marq{to{transform:translateX(-50%)}}

/* sections */
.sec-head{max-width:680px;margin-bottom:44px}
.sec-head.center{margin-inline:auto;text-align:center}
.eyebrow{display:inline-block;font-weight:700;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px;background:linear-gradient(90deg,var(--cy),var(--vi));-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:clamp(32px,4.6vw,56px);line-height:1.05;letter-spacing:-.04em;font-weight:800}
h3{font-size:19px;letter-spacing:-.01em}
h1,h2,h3{text-wrap:balance}
.sub{color:var(--mut);margin-top:14px;font-size:clamp(16px,1.4vw,18px)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.b-telco{grid-column:span 4;grid-row:span 2}
.b-sm{grid-column:span 2}
@media(max-width:960px){.bento{grid-template-columns:1fr 1fr}.b-telco{grid-column:span 2;grid-row:auto}.b-sm{grid-column:span 1}}
@media(max-width:580px){.bento{grid-template-columns:1fr}.b-telco,.b-sm{grid-column:auto}}
.card{position:relative;padding:28px;border-radius:var(--r);background:var(--card);border:1px solid var(--line);overflow:hidden;transition:transform .5s var(--out),border-color .25s}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(280px circle at var(--mx,50%) var(--my,0%),rgba(6,182,212,.16),transparent 70%);opacity:0;transition:opacity .3s;pointer-events:none}
@media(hover:hover) and (pointer:fine){.card:hover::before{opacity:1}.card:hover{border-color:rgba(6,182,212,.4)}}
.card p{color:var(--mut);margin-top:8px;font-size:15px}
.ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;color:#22d3ee;background:linear-gradient(135deg,rgba(6,182,212,.18),rgba(139,92,246,.18));border:1px solid var(--line)}
.ico.v{color:#a78bfa}
.badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;background:rgba(139,92,246,.2);color:#c4b5fd;vertical-align:middle;white-space:nowrap}
:root[data-theme="light"] .badge{color:#6d28d9}
:root[data-theme="light"] .ico{color:#0891b2}:root[data-theme="light"] .ico.v{color:#7c3aed}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;position:relative;z-index:1}
.tags li{padding:5px 12px;border-radius:999px;font-size:12px;border:1px solid var(--line);background:var(--card)}
.b-telco h3{font-size:clamp(24px,2.6vw,32px);letter-spacing:-.03em}.b-telco p{font-size:17px;max-width:52ch}
.net{position:absolute;right:-10px;bottom:-6px;width:min(360px,70%);opacity:.55;pointer-events:none}
.net path{fill:none;stroke:url(#kg);stroke-width:1.5;stroke-dasharray:6 8;animation:dash 6s linear infinite}
.net circle{fill:var(--bg);stroke:#22d3ee;stroke-width:2;animation:node 3s ease-in-out infinite}
.net circle:nth-of-type(2n){stroke:#a78bfa;animation-delay:1s}
@keyframes dash{to{stroke-dashoffset:-140}}
@keyframes node{50%{r:8}}

/* EMG showcase */
.emg{overflow:hidden;background:radial-gradient(900px 500px at 50% 0%,rgba(139,92,246,.12),transparent 70%)}
.feats{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:-12px auto 48px;max-width:860px}
.feats li{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:14px}
.feats li::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--cy),var(--vi))}
.stage{perspective:1600px}
.emg-win{transform-origin:50% 0;will-change:transform}
.window{border-radius:16px;overflow:hidden}
.titlebar{display:flex;align-items:center;gap:7px;padding:12px 14px;border-bottom:1px solid var(--line);font-size:12px;color:var(--mut)}
.titlebar span{margin-inline:auto;transform:translateX(-26px)}
.tl{width:12px;height:12px;border-radius:50%}.r{background:#ff5f57}.y{background:#febc2e}.g{background:#28c840}
.emg-body{display:grid;grid-template-columns:220px 1fr}
.side{display:flex;flex-direction:column;gap:4px;padding:12px;border-right:1px solid var(--line)}
.side button{position:relative;display:flex;align-items:center;gap:10px;padding:11px 12px;border:0;border-radius:10px;background:transparent;cursor:pointer;font-size:14px;text-align:left;color:var(--mut);overflow:hidden;transition:background .2s,color .2s,transform .16s var(--out)}
.side button:active{transform:scale(.97)}
.side button[aria-selected=true]{background:linear-gradient(120deg,rgba(6,182,212,.18),rgba(139,92,246,.18));color:var(--fg)}
.side .bar{position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cy),var(--vi));transform:scaleX(0);transform-origin:left}
.side.auto button[aria-selected=true] .bar{animation:prog 5s linear forwards}
.side.paused .bar{animation-play-state:paused!important}
@keyframes prog{to{transform:scaleX(1)}}
@media(hover:hover) and (pointer:fine){.side button:hover{color:var(--fg)}}
.screen{position:relative;aspect-ratio:1280/640;background:#0b1222;overflow:hidden}
.screen img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top;opacity:0;filter:blur(8px);transform:scale(1.03);transition:opacity .6s var(--out),filter .6s var(--out),transform .8s var(--out)}
.screen img.on{opacity:1;filter:none;transform:none}
.note{text-align:center;color:var(--mut);font-size:12px;margin-top:16px}
@media(max-width:760px){
  .emg-body{grid-template-columns:1fr}
  .side{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);scrollbar-width:none}
  .side button{flex:none}
}

/* demo */
.demo{border-radius:28px;padding:clamp(18px,3vw,34px)}
.seg{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:999px;background:var(--card);border:1px solid var(--line)}
.seg button{border:0;background:transparent;padding:9px 16px;border-radius:999px;font-size:14px;cursor:pointer;color:var(--mut);transition:background .25s var(--out),color .2s,transform .16s var(--out)}
.seg button:active{transform:scale(.96)}
.seg button[aria-selected=true]{background:linear-gradient(120deg,var(--cy),var(--vi));color:#fff}
.flow{position:relative;display:flex;align-items:center;justify-content:space-between;margin:44px 0 30px}
.node{position:relative;z-index:1;min-width:92px;text-align:center;padding:14px 10px;border-radius:16px;background:var(--card);border:1px solid var(--line);transition:transform .45s var(--spring),border-color .3s,box-shadow .3s}
.node b{display:block;font-size:14px}.node small{font-size:11px;color:var(--mut)}
.node.on{transform:scale(1.08);border-color:var(--cy);box-shadow:0 0 30px -4px var(--cy)}
.link{flex:1;height:2px;margin:0 -2px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px)}
.packet{position:absolute;left:0;top:50%;width:14px;height:14px;margin-top:-7px;border-radius:50%;background:linear-gradient(135deg,var(--cy),var(--vi));box-shadow:0 0 18px var(--cy);opacity:0}
.demo-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.demo-foot p{color:var(--mut);font-size:15px;min-height:1.5em}
@media(max-width:680px){
  .flow{flex-direction:column;margin:28px 0}
  .link{width:2px;height:22px;flex:none;background:repeating-linear-gradient(180deg,var(--line) 0 6px,transparent 6px 12px)}
  .node{width:100%}.packet{display:none}
}

/* deploy */
.dep-body{margin-top:20px;border-radius:28px;padding:clamp(20px,3vw,36px);display:grid;grid-template-columns:280px 1fr;gap:36px;align-items:center}
@media(max-width:720px){.dep-body{grid-template-columns:1fr}}
.dep-art{position:relative;height:210px;display:flex;align-items:center;justify-content:center;gap:28px;border-radius:20px;background:var(--card);border:1px solid var(--line);overflow:hidden}
.rack{display:flex;flex-direction:column;gap:6px;width:92px;transition:opacity .5s var(--out),transform .6s var(--spring)}
.rack i{height:28px;border-radius:7px;background:linear-gradient(90deg,var(--cy),var(--vi));opacity:.88;position:relative}
.rack i::after{content:"";position:absolute;right:8px;top:11px;width:6px;height:6px;border-radius:50%;background:#fff;animation:blink 1.6s infinite}
.rack i:nth-child(2)::after{animation-delay:.4s}.rack i:nth-child(3)::after{animation-delay:.8s}.rack i:nth-child(4)::after{animation-delay:1.2s}
@keyframes blink{50%{opacity:.2}}
.cloud-art{width:96px;height:96px;fill:rgba(139,92,246,.25);stroke:#a78bfa;stroke-width:1.2;filter:drop-shadow(0 0 18px var(--vi));transition:opacity .5s var(--out),transform .6s var(--spring)}
[data-d=onprem] .cloud-art{opacity:0;transform:scale(.8) translateY(10px);position:absolute}
[data-d=cloud] .rack{opacity:0;transform:scale(.9) translateY(10px);position:absolute}
.checks{display:grid;gap:12px;margin-top:16px}
.checks li{display:flex;gap:10px;color:var(--mut);animation:in .45s var(--out) backwards}
.checks li::before{content:"✓";color:var(--cy);font-weight:700}
@keyframes in{from{opacity:0;transform:translateY(8px)}}

/* process timeline */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.steps::before,.steps::after{content:"";position:absolute;left:0;right:0;top:22px;height:2px;background:var(--line)}
.steps::after{background:linear-gradient(90deg,var(--cy),var(--vi));transform:scaleX(var(--p,0));transform-origin:left}
.steps li{position:relative;z-index:1}
.steps span{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;margin-bottom:18px;font-weight:700;font-size:14px;background:var(--bg);border:2px solid var(--cy);box-shadow:0 0 0 6px var(--bg)}
.steps p{color:var(--mut);margin-top:6px;font-size:15px}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}.steps::before,.steps::after{display:none}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
@media(max-width:840px){.contact{grid-template-columns:1fr}}
.mails{display:grid;gap:12px}
.mail{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:18px;background:var(--card);border:1px solid var(--line);transition:transform .3s var(--out),border-color .2s}
.mail:active{transform:scale(.985)}
@media(hover:hover) and (pointer:fine){.mail:hover{border-color:var(--cy);transform:translateY(-2px)}}
.mail .ico{margin:0;width:42px;height:42px;flex:none}
.mail a{flex:1;min-width:0}
.mail b{display:block;font-size:14px}.mail small{color:var(--mut);font-size:13px;overflow-wrap:anywhere}
.copy{border:1px solid var(--line);background:transparent;border-radius:999px;padding:7px 12px;font-size:12px;cursor:pointer;transition:transform .16s var(--out),background .2s}
.copy:active{transform:scale(.95)}
.form{border-radius:24px;padding:26px;display:grid;gap:14px}
.form label{display:grid;gap:6px;font-size:13px;color:var(--mut)}
.form input,.form select,.form textarea{padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);font-size:16px;resize:vertical}
.form select option{color:#0F172A}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--cy);box-shadow:0 0 0 3px rgba(6,182,212,.25)}
.form small{color:var(--mut);font-size:12px}
.err{color:#f87171;font-size:13px;min-height:1.2em}

.foot{border-top:1px solid var(--line);padding:28px 0 calc(28px + env(safe-area-inset-bottom))}
.foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;color:var(--mut)}
.foot .brand{margin:0}

.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translate(-50%,20px);opacity:0;padding:10px 18px;border-radius:999px;background:var(--bg2);border:1px solid var(--line);font-size:14px;transition:opacity .25s var(--out),transform .25s var(--out);pointer-events:none;z-index:99}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* scroll reveal */
.js .reveal{opacity:0;transform:translateY(24px);filter:blur(6px);transition:opacity .8s var(--out),transform .8s var(--out),filter .8s var(--out);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none;filter:none}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .js .reveal{opacity:1;transform:none;filter:none}
  html{scroll-behavior:auto}
}