@font-face{font-family:Inter;src:url(fonts/InterVariable.woff2) format("woff2");font-weight:100 900;font-display:swap}
/* Brand colours from the Celaeno logo guidelines V1.0 */
:root{
  --midnight:#0B1426;
  --ink:#1b2335;
  --muted:#6a6f7c;
  --line:#e3e0d9;
  --paper:#F4F2EE;
  --film-bg:#F4F2EE; /* matches the decoded background of the logo animation */
  --white:#fff;
  --blue:#3A63E8;
  --star:#8EA6FF;
  --font:Inter,"Source Han Sans SC","Noto Sans SC","Noto Sans CJK SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--white);font-size:16px;line-height:1.8;font-weight:400;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;color:var(--midnight);font-weight:300;letter-spacing:.01em}
h2{font-size:clamp(28px,3.2vw,42px);line-height:1.3}
h3{font-weight:500}
p{margin:0}
.wrap{width:min(1240px,100% - 64px);margin:0 auto}

.btn{display:inline-block;padding:14px 32px;background:var(--midnight);color:var(--paper);text-decoration:none;font:inherit;font-size:15px;letter-spacing:.04em;border:1px solid var(--midnight);border-radius:0;cursor:pointer;position:relative;overflow:hidden;z-index:0;transition:color .35s,border-color .35s}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--blue);transform:scaleX(0);transform-origin:right;transition:transform .5s cubic-bezier(.7,0,.2,1)}
.btn:hover{border-color:var(--blue);color:#fff}
.btn:hover::before{transform:scaleX(1);transform-origin:left}
.link{font-size:15px;text-decoration:none;padding-bottom:3px;background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat;transition:background-size .45s cubic-bezier(.7,0,.2,1)}
.link:hover{background-size:0 1px;background-position:100% 100%}

/* header */
.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .3s}
.header.is-scrolled{border-bottom-color:var(--line)}
.header__in{display:flex;align-items:center;gap:40px;height:80px}
.brand{margin-right:auto}
.brand img{height:30px;width:auto}
.nav{display:flex;align-items:center;gap:34px;font-size:15px}
.nav a{text-decoration:none;color:var(--ink);position:relative}
.nav a:not(.nav__cta)::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--midnight);transform:scaleX(0);transition:transform .35s var(--ease)}
.nav a:not(.nav__cta):hover::after{transform:scaleX(1)}
.nav .nav__cta{padding:8px 20px;border:1px solid var(--midnight);transition:background .3s,color .3s}
.nav .nav__cta:hover{background:var(--midnight);color:var(--paper)}
.header__tel{font-size:14px;text-decoration:none;color:var(--muted);letter-spacing:.03em}
.menu-btn{display:none;width:40px;height:40px;background:none;border:0;cursor:pointer;padding:10px 8px}
.menu-btn span{display:block;height:1.5px;background:var(--midnight);margin:7px 0;transition:transform .2s}
.menu-btn[aria-expanded="true"] span:first-child{transform:translateY(4.25px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:last-child{transform:translateY(-4.25px) rotate(-45deg)}

/* hero */
.hero{background:var(--film-bg);overflow:hidden}
.hero__in{display:grid;grid-template-columns:5fr 7fr;align-items:center;gap:24px;min-height:min(760px,calc(100vh - 80px));padding:40px 0}
.hero__kicker{font-size:13px;letter-spacing:.08em;color:var(--muted);margin-bottom:28px}
.hero__title{font-size:clamp(40px,4.8vw,68px);line-height:1.22;font-weight:300}
.hero__en{margin-top:18px;font-size:15px;color:var(--muted);letter-spacing:.02em}
.hero__lead{margin-top:28px;max-width:25em;color:#4a5060}
.hero__actions{margin-top:44px;display:flex;align-items:center;gap:32px;flex-wrap:wrap}
.hero__film{margin:0 -40px 0 0;position:relative}
.hero__film video{width:100%;aspect-ratio:16/9;background:var(--film-bg)}
.replay{position:absolute;right:48px;bottom:12px;font:inherit;font-size:13px;color:var(--muted);background:none;border:0;border-bottom:1px solid currentColor;padding:0 0 2px;cursor:pointer}
.replay:hover{color:var(--midnight)}

/* sections */
.section{padding:128px 0}
.section--paper{background:var(--paper)}
.head{max-width:640px;margin-bottom:56px}
.head p{margin-top:14px;color:var(--muted)}
.head--row{display:flex;justify-content:space-between;align-items:baseline;max-width:none}
.head--row p{margin:0;font-size:14px}

/* effect: inside / outside */
.effect__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.effect__decal{margin:0}
.effect__decal img{width:100%}
.effect__decal figcaption,.story__stars figcaption{margin-top:14px;font-size:13px;color:var(--muted)}
.monitor{position:relative;aspect-ratio:391/220;background:#1D232F;padding:2.3%;user-select:none;touch-action:pan-y}
.monitor__screen{position:absolute;inset:2.3%}
.monitor__screen--inside{background:linear-gradient(120deg,#4168E9 0%,#7b98f0 60%,#a9baf6 100%);padding:13% 9%}
.monitor__screen--inside i{display:block;height:7%;background:rgba(255,255,255,.95);width:43%;margin-bottom:5%}
.monitor__screen--inside i+i{background:rgba(255,255,255,.55);width:63%;height:6%}
.monitor__screen--inside i+i+i{width:53%}
.monitor__screen--outside{background:#020305;clip-path:inset(0 0 0 calc(var(--s) * 1%))}
.monitor__range{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0;z-index:3}
.monitor__handle{position:absolute;top:0;bottom:0;left:calc(2.3% + 95.4% * var(--s) / 100);width:1px;background:rgba(255,255,255,.85);z-index:2;pointer-events:none}
.monitor__handle::after{content:"";position:absolute;top:50%;left:50%;width:36px;height:36px;margin:-18px 0 0 -18px;border:1px solid rgba(255,255,255,.9);border-radius:50%;background:rgba(11,20,38,.35) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='white' stroke-width='1.4'%3E%3Cpath d='M7 6l-4 4 4 4M13 6l4 4-4 4'/%3E%3C/svg%3E") center/18px no-repeat}
.monitor__labels{display:flex;justify-content:space-between;gap:16px;margin-top:16px;font-size:13px;color:var(--muted)}
.monitor__labels b{color:var(--midnight);font-weight:500;margin-right:4px}

/* product */
.product{display:grid;grid-template-columns:5fr 6fr;gap:96px;align-items:start}
.product__lead{margin:28px 0 32px;color:#4a5060}
.product__body h3{font-size:14px;letter-spacing:.06em;color:var(--muted);font-weight:400;margin-bottom:8px}
.product__body h3+*{margin-bottom:48px}
.features{list-style:none;margin:0;padding:0;border-top:1px solid var(--midnight)}
.features li{padding:16px 0;border-bottom:1px solid var(--line);font-size:17px}
.specs{margin:0;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--midnight)}
.specs div{padding:18px 0;border-bottom:1px solid var(--line)}
.specs dt{font-size:13px;color:var(--muted)}
.specs dd{margin:4px 0 0;font-size:20px;color:var(--midnight);font-weight:400}

/* applications */
.apps{display:grid;grid-template-columns:5fr 6fr;gap:96px}
.apps__text p{margin-top:24px;color:#4a5060;max-width:26em}
.apps__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--midnight)}
.apps__list li{padding:28px 24px 32px 0;border-bottom:1px solid var(--line);transition:background .35s}
.apps__list li:nth-child(even){padding-left:24px;border-left:1px solid var(--line)}
.apps__list h3{font-size:20px;font-weight:400;margin-bottom:6px;transition:color .3s}
.apps__list p{font-size:15px;color:var(--muted)}
.apps__list li:hover h3{color:var(--blue)}

/* cases */
.cases{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.case{grid-column:span 2;position:relative;padding:0;border:0;background:#ddd;cursor:zoom-in;overflow:hidden;text-align:left;font:inherit;color:inherit}
.case--lg{grid-column:span 3}
.case img{width:100%;transition:transform 1s var(--ease)}
.case:hover img{transform:scale(1.04)}
.case__cap{position:absolute;left:0;right:0;bottom:0;padding:40px 20px 16px;background:linear-gradient(transparent,rgba(11,20,38,.7));color:var(--paper);display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:14px;transition:padding .4s var(--ease)}
.case:hover .case__cap{padding-bottom:22px}
.case__cap b{font-weight:400;letter-spacing:.02em}
.case__cap i{font-style:normal;font-size:12px;opacity:.8}
.case:focus-visible{outline:2px solid var(--blue);outline-offset:3px}

/* brand (night) */
.night{background:var(--midnight);color:rgba(244,242,238,.72);padding-top:128px}
.night h2,.night h3{color:var(--paper)}
.night__intro{display:grid;grid-template-columns:160px 1fr;gap:72px;align-items:center}
.night__mark{width:160px}
.night__intro p{margin-top:20px}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:56px;margin-top:96px;padding-top:32px;border-top:1px solid rgba(244,242,238,.18)}
.trio h3{font-size:16px;font-weight:400;margin-bottom:12px}
.trio p{font-size:14px;line-height:1.9}
.night__pattern{margin-top:112px;height:min(46vw,520px);background:url(brand/pattern-midnight.webp) center/cover no-repeat}

/* story */
.story{display:grid;grid-template-columns:6fr 5fr;gap:88px;align-items:center}
.story__stars{margin:0;border:1px solid var(--line)}
.story__stars img{width:100%}
.story__stars figcaption{padding:0 16px 14px}
.notes{margin:36px 0 0;border-top:1px solid var(--midnight)}
.notes div{padding:20px 0;border-bottom:1px solid var(--line)}
.notes dt{font-size:16px;color:var(--midnight)}
.notes dd{margin:6px 0 0;font-size:14px;color:var(--muted)}

/* product range + resources */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:96px}
.rows{list-style:none;margin:32px 0 0;padding:0;border-top:1px solid var(--midnight)}
.rows li{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);transition:padding .35s var(--ease)}
.rows li:hover{padding-left:10px}
.rows b{display:block;font-weight:400;color:var(--midnight);font-size:17px}
.rows .is-current b{font-weight:500}
.rows small{display:block;font-size:13px;color:var(--muted)}
.rows a{font-size:14px;text-decoration:none;color:var(--blue);white-space:nowrap}
.rows a:hover{text-decoration:underline}

/* about */
.about{display:grid;grid-template-columns:5fr 6fr;gap:96px;align-items:center}
.about__logos{display:grid;gap:56px;justify-items:start}
.about__changzhe{width:min(360px,100%)}
.about__celaeno{width:min(260px,70%);padding-top:56px;border-top:1px solid var(--line)}
.about__en{margin:12px 0 32px;font-size:13px;letter-spacing:.06em;color:var(--muted)}
.about__text>p:not(.about__en){color:#4a5060;max-width:34em}
.about__text p+p{margin-top:14px}

/* contact */
.contact{display:grid;grid-template-columns:5fr 6fr;gap:96px}
.contact__info>p{margin-top:20px;color:#4a5060}
.contact__list{margin:40px 0 0;border-top:1px solid var(--midnight)}
.contact__list div{display:grid;grid-template-columns:72px 1fr;padding:14px 0;border-bottom:1px solid var(--line)}
.contact__list dt{color:var(--muted);font-size:14px}
.contact__list dd{margin:0}
.contact__list a{text-decoration:none}
.form{display:grid;gap:22px;align-content:start}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.form label{display:grid;gap:6px;font-size:13px;color:var(--muted)}
.form input,.form select,.form textarea{width:100%;font:inherit;font-size:15px;color:var(--ink);background:transparent;border:0;border-bottom:1px solid #c9c5bc;padding:8px 0;border-radius:0}
.form textarea{resize:vertical;border:1px solid #c9c5bc;padding:10px 12px}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--midnight)}
.form .is-invalid{border-color:#c0392b}
.form__msg{font-size:14px;color:var(--blue);min-height:1.5em}
.form .btn{justify-self:start}

/* footer */
.footer{background:var(--white);border-top:1px solid var(--line);padding:64px 0 28px;font-size:13px;color:var(--muted)}
.footer__in{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.footer__brand img{height:26px;width:auto;margin-bottom:14px}
.footer__company{text-align:right}
.footer__company img{height:30px;width:auto;margin:0 0 14px auto}
.footer__company p+p{margin-top:6px}
.footer__base{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:12px}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:50;background:rgba(11,20,38,.94);display:flex;align-items:center;justify-content:center;padding:40px}
.lightbox[hidden]{display:none}
.lightbox figure{margin:0;max-width:1280px;width:100%}
.lightbox img{width:100%;max-height:82vh;object-fit:contain}
.lightbox figcaption{color:var(--paper);margin-top:12px;font-size:14px}
.lightbox__close{position:absolute;top:16px;right:20px;width:44px;height:44px;font-size:30px;line-height:1;color:var(--paper);background:none;border:0;cursor:pointer}

/* ---------- motion ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes charUp{from{transform:translateY(110%)}to{transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.js .is-loading .hero__kicker,.js .is-loading .hero__title,.js .is-loading .hero__en,.js .is-loading .hero__lead,.js .is-loading .hero__actions,.js .is-loading .hero__film{visibility:hidden}
.hero__title .ln{display:block;overflow:hidden;padding-bottom:.08em}
.hero__title .ch{display:inline-block;transform:translateY(110%)}
.is-ready .header{animation:fadeIn .8s both}
.is-ready .hero__kicker{animation:fadeUp .9s .15s var(--ease) both}
.is-ready .hero__title .ch{animation:charUp 1s var(--ease) both;animation-delay:calc(.3s + var(--i) * 50ms)}
.is-ready .hero__en{animation:fadeUp .9s 1.05s var(--ease) both}
.is-ready .hero__lead{animation:fadeUp .9s 1.2s var(--ease) both}
.is-ready .hero__actions{animation:fadeUp .9s 1.35s var(--ease) both}
.is-ready .hero__film{animation:fadeIn 1.2s .2s both}

.js .reveal{opacity:0;transform:translateY(36px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}
.js .reveal h2{clip-path:inset(0 0 100% 0);transform:translateY(18px);transition:clip-path 1s .12s var(--ease),transform 1s .12s var(--ease)}
.js .reveal.is-in h2{clip-path:inset(0 0 -12% 0);transform:none}
.js .reveal .features li,.js .reveal .specs>div,.js .reveal .apps__list li,.js .reveal .rows li,.js .reveal.trio>div,.js .reveal .notes>div,.js .reveal.cases>.case,.js .reveal .contact__list>div{opacity:0;transform:translateY(16px);transition:opacity .8s,transform .8s var(--ease);transition-delay:calc(.25s + var(--d,0) * 80ms)}
.js .reveal.is-in .features li,.js .reveal.is-in .specs>div,.js .reveal.is-in .apps__list li,.js .reveal.is-in .rows li,.js .reveal.trio.is-in>div,.js .reveal.is-in .notes>div,.js .reveal.cases.is-in>.case,.js .reveal.is-in .contact__list>div{opacity:1;transform:none}
.js .night__pattern{clip-path:inset(0 100% 0 0);transition:clip-path 1.8s cubic-bezier(.6,0,.2,1)}
.js .night__pattern.is-in{clip-path:inset(0 0 0 0)}

@media (max-width:1100px){
  .menu-btn{display:block}
  .header__tel{display:none}
  .nav{position:fixed;top:80px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--white);border-bottom:1px solid var(--line);padding:8px 32px 24px;display:none}
  .nav.is-open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav .nav__cta{margin-top:16px;text-align:center}
  .hero__in{grid-template-columns:1fr;min-height:0;padding:72px 0 24px}
  .hero__film{margin:0 -32px}
  .product,.apps,.story,.duo,.about,.contact,.effect__grid{grid-template-columns:1fr;gap:56px}
  .trio{grid-template-columns:1fr;gap:32px}
  .night__intro{grid-template-columns:96px 1fr;gap:40px}
  .night__mark{width:96px}
}
@media (max-width:640px){
  .wrap{width:calc(100% - 40px)}
  .header__in{height:64px}
  .brand img{height:24px}
  .nav{top:64px;padding:8px 20px 20px}
  html{scroll-padding-top:64px}
  .section{padding:80px 0}
  .night{padding-top:80px}
  .hero__in{padding:56px 0 8px}
  .hero__film{margin:0 -20px}
  .replay{right:20px}
  .hero__title{font-size:38px}
  .apps__list{grid-template-columns:1fr}
  .apps__list li:nth-child(even){padding-left:0;border-left:0}
  .cases{grid-template-columns:1fr 1fr;gap:10px}
  .case,.case--lg{grid-column:auto}
  .case--lg,.case:last-child{grid-column:span 2}
  .case__cap{padding:24px 10px 8px;font-size:12px}
  .case__cap i{display:none}
  .head--row{display:block}
  .head--row p{margin-top:8px}
  .specs{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .night__intro{grid-template-columns:1fr;gap:28px}
  .night__mark{width:72px}
  .monitor__labels{flex-direction:column;gap:4px}
  .footer__company{text-align:left}
  .footer__company img{margin-left:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important;transition-delay:0s!important}
  .js .is-loading .hero__kicker,.js .is-loading .hero__title,.js .is-loading .hero__en,.js .is-loading .hero__lead,.js .is-loading .hero__actions,.js .is-loading .hero__film{visibility:visible}
}