/* Navigation */
.navbar{position:sticky;top:0;z-index:50;background:rgba(4,11,21,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-container{height:88px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand img,.footer-brand img{filter:brightness(0) invert(1);width:132px;height:auto}nav{display:flex;align-items:center;gap:32px;font-size:14px}nav a{transition:color .2s}nav a:hover{color:var(--accent)}.nav-cta{border:1px solid #7896bb66;border-radius:5px;padding:10px 17px;margin-left:12px;display:flex;gap:22px;align-items:center}.nav-cta:hover{border-color:var(--accent)}.menu-toggle{display:none}
/* Connected software modules complement the headline. */
.hero{position:relative;isolation:isolate;background:var(--bg-deep);overflow:hidden}.hero-container{min-height:650px;display:flex;align-items:center;padding-block:68px 80px;position:relative;z-index:2}.hero-content{width:62%;max-width:780px}.hero .eyebrow{display:flex;align-items:center;gap:10px;color:#b7c8dc}.hero h1{font-size:clamp(53px,5.3vw,76px);line-height:1.09;margin:26px 0;letter-spacing:-.04em}.hero h1 span{color:var(--accent)}.hero-subtitle{font-size:18px;line-height:1.85;max-width:535px;color:#b9c7d9}.hero-actions{display:flex;gap:16px;align-items:center;margin-top:36px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;padding:15px 21px;min-height:54px;border-radius:5px;font-size:14px;font-weight:500;border:1px solid transparent;transition:background .2s,border-color .2s,transform .2s}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--accent);color:#061321;box-shadow:0 6px 30px #55d6f010}.button-primary:hover{background:#a0eef7}.button-outline{background:#07111c80;border-color:#7896bb66}.button-outline:hover{background:#12273d;border-color:#b4cadf}
/* Service cards retain the substance and visual depth of V3. */
.services{background:linear-gradient(180deg,var(--bg-deep),var(--bg))}.services-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.service-card{background:linear-gradient(140deg,#102137 0%,#0b1626 70%);border:1px solid var(--line);border-radius:10px;padding:30px;display:flex;flex-direction:column;transition:transform .25s,border-color .25s;position:relative}.service-card:hover{transform:translateY(-4px);border-color:#72dced66}.service-card.featured{border-color:#56b8d155;background:linear-gradient(145deg,#12304a,#0b1729 80%)}.service-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:44px}.number{font:400 16px var(--heading);color:#829ab5}.service-top svg{width:32px;height:32px;stroke:var(--accent);stroke-width:1.2;fill:none;stroke-linecap:round;stroke-linejoin:round}.service-card h3{margin-bottom:18px}.service-card>p{font-size:15px;line-height:1.85;margin-bottom:30px}.service-footer{border-top:1px solid var(--line);margin-top:auto;padding-top:20px;font-size:12px;line-height:1.7;color:#bed0e4}.service-footer span{color:#50748d;padding-inline:5px}
/* Expertise */
.expertise{border-block:1px solid var(--line);background:#0a1525}.expertise-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line);border-radius:10px;overflow:hidden}.expertise-card{padding:30px 26px 32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(145deg,#10203666,transparent);transition:background .25s}.expertise-card:hover{background:#12243b}.expertise-icon{width:42px;height:42px;display:flex;align-items:center;justify-content:flex-start;color:var(--accent);margin-bottom:25px}.expertise-icon svg{width:30px;height:30px;stroke-width:1.25}.expertise-card h3{font-size:20px;line-height:1.3;margin-bottom:12px}.expertise-card p{font-size:14px;line-height:1.8}
/* Why Zenta */
.about{background:radial-gradient(ellipse at 100% 90%,#10345355,transparent 60%),var(--bg)}.about-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:90px;align-items:center}.about h2{margin:20px 0 28px}.about h2 span{color:#b1c6df}.about-copy>p:not(.eyebrow){margin-top:18px;font-size:15px;line-height:1.9}.about-copy .lead{font-size:19px!important;color:#dbe5f2}.approach-panel{padding:34px;border:1px solid #527d9b55;border-radius:12px;background:linear-gradient(145deg,#142b42dd,#0a1728);box-shadow:0 28px 60px #00000022}.approach-panel>.eyebrow{font-size:11px;color:#a6c0d8;padding-bottom:10px}.approach-item{display:flex;gap:24px;padding:27px 0;border-bottom:1px solid var(--line)}.approach-item>span{font:400 14px var(--heading);color:var(--accent);padding-top:5px}.approach-item h3{font-size:23px;margin-bottom:10px}.approach-item p{font-size:14px;line-height:1.8}.approach-bottom{font-size:12px;color:#aec4d7;display:flex;align-items:center;gap:10px;padding-top:24px}
/* Project descriptions retained from V3. */
.projects{background:#091421;border-top:1px solid var(--line)}.project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.project-card{padding:28px;border:1px solid var(--line);border-radius:10px;background:linear-gradient(145deg,#132438,#0a1625);display:flex;flex-direction:column}.project-top{display:flex;justify-content:space-between;gap:12px;align-items:center;padding-bottom:44px}.project-category{font-size:10px;letter-spacing:.09em;color:var(--accent)}.project-number{font:400 16px var(--heading);color:#8097af}.project-card h3{font-size:25px;line-height:1.3;min-height:65px}.project-card p{font-size:14px;line-height:1.8;margin:20px 0 30px}
/* Contact and footer */
.contact{padding-top:32px;background:#091421}.contact-panel{padding:58px 64px;border:1px solid #38769488;border-radius:14px;display:grid;grid-template-columns:1.4fr 1fr;align-items:center;gap:64px;background:radial-gradient(ellipse at 100% 0%,#1f799942,transparent 65%),linear-gradient(120deg,#102238,#0e2537);position:relative;overflow:hidden}.contact h2{margin:20px 0 24px;font-size:44px}.contact p:not(.eyebrow){font-size:16px;max-width:510px}.contact-actions{display:flex;flex-direction:column;align-items:flex-start;justify-self:end;gap:12px}.contact-actions .button{margin-bottom:10px}.contact-email{font-family:var(--heading);font-size:22px}.contact-phone{font-size:15px;color:var(--secondary)}.contact-email:hover,.contact-phone:hover{color:var(--accent)}footer{background:var(--bg-deep);border-top:1px solid var(--line)}.footer-main{display:grid;grid-template-columns:2fr 1fr 1fr;gap:64px;padding:58px 0}.footer-brand p{font-size:14px;margin-top:22px;line-height:1.9}.footer-nav,.footer-address{display:flex;flex-direction:column;align-items:flex-start;gap:8px;color:var(--secondary);font-size:14px}.footer-nav .eyebrow,.footer-address .eyebrow{margin-bottom:12px;color:#8ca3bd;font-size:11px}.footer-main a:hover{color:var(--accent)}.footer-bottom{display:flex;justify-content:space-between;padding:23px 0;border-top:1px solid var(--line);font-size:12px;color:#91a4bb}.footer-bottom a{display:flex;gap:24px}
/* Responsive layout and fully functional mobile navigation. */
@media(min-width:1600px){.hero-container{min-height:700px}.hero h1{font-size:82px}}
@media(max-width:1100px){nav{gap:22px}.nav-cta{margin-left:0}.hero-content{width:65%}.hero h1{font-size:60px}.hero-container{min-height:600px}.service-card{padding:25px}.service-footer{font-size:11px}.about-grid{gap:46px}.project-card{padding:24px}.project-card h3{font-size:23px}.contact-panel{padding:44px;gap:40px}.expertise-card{padding:26px 22px}.expertise-card h3{font-size:19px}}
@media(max-width:900px){nav{gap:16px;font-size:13px}.nav-container{gap:20px}.brand img{width:112px}.hero h1{font-size:53px}.hero-subtitle{font-size:17px;max-width:450px}.hero-actions{gap:12px}.button{font-size:13px;padding:14px 17px;gap:16px}.expertise-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.services-grid{gap:14px}.service-card{padding:22px}.service-card h3{font-size:23px}.service-card>p{font-size:14px}.project-grid{gap:14px}.project-card{padding:20px}.project-card h3{font-size:21px}.project-category{font-size:9px}.about-grid{grid-template-columns:1fr;gap:40px}.about-copy{max-width:660px}.approach-panel{max-width:660px}.contact h2{font-size:38px}.contact-panel{gap:28px}.footer-main{gap:36px}}
@media(max-width:760px){.nav-container{height:74px}.brand img{width:122px}.menu-toggle{display:flex;align-items:center;gap:16px;padding:10px 0;min-height:44px;cursor:pointer;background:none;border:0;color:var(--ink);font-size:14px}.js nav{display:none;position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;padding:24px 20px;background:#081322;border-bottom:1px solid var(--line);gap:6px;box-shadow:0 20px 40px #0005}.js nav.open{display:flex}.js nav a{padding:12px 10px;font-size:16px}.js nav .nav-cta{margin-top:8px;padding-inline:14px;justify-content:space-between}.hero-container{min-height:650px;padding-top:48px;padding-bottom:210px;align-items:flex-start}.hero-content{width:100%;max-width:580px}.hero .eyebrow{font-size:10px}.hero h1{font-size:clamp(42px,7.2vw,58px);margin:22px 0}.hero-subtitle{font-size:16px;max-width:520px;line-height:1.8}.hero-actions{margin-top:28px}.services-grid{grid-template-columns:1fr;gap:18px}.service-card{padding:28px}.service-top{margin-bottom:26px}.service-card h3{font-size:28px}.service-card>p{font-size:16px;margin-bottom:26px}.service-footer{font-size:12px}.project-grid{grid-template-columns:1fr;gap:18px}.project-card{padding:28px}.project-top{padding-bottom:24px}.project-category{font-size:11px}.project-card h3{font-size:28px;min-height:0}.project-card p{font-size:16px;margin:18px 0 24px}.contact{padding-top:8px}.contact-panel{padding:32px 26px;grid-template-columns:1fr;gap:32px}.contact h2{font-size:36px}.contact-actions{justify-self:start}.contact-email{font-size:23px}.footer-main{grid-template-columns:1fr 1fr;gap:36px;padding:40px 0}.footer-brand{grid-column:1/-1}.footer-bottom{font-size:11px;gap:24px}body:not(.js) .menu-toggle{display:none}body:not(.js) .nav-container{height:auto;min-height:74px;flex-wrap:wrap;padding-block:16px}body:not(.js) nav{flex-wrap:wrap}.approach-panel{padding:28px}.approach-item{gap:20px}}
@media(max-width:440px){.hero h1{font-size:42px}.hero h1 br{display:none}.hero-container{min-height:740px}.hero-actions{flex-wrap:wrap;gap:12px}.hero-actions .button{min-height:50px;font-size:13px;gap:16px}.expertise-grid{grid-template-columns:1fr}.expertise-card{padding:24px;display:grid;grid-template-columns:34px 1fr;gap:10px 18px}.expertise-icon{grid-row:1/3;margin-bottom:0}.expertise-card h3{font-size:22px;margin:0}.expertise-card p{grid-column:2;font-size:14px}.approach-panel{padding:24px}.approach-panel>.eyebrow{font-size:10px}.contact h2{font-size:33px}}


/* Hero artwork: inline isometric 'connected systems' illustration (see .hero-art svg). */
.intro-surface{position:relative;background:#040b15}
.hero{position:relative;isolation:isolate;overflow:hidden;background:#040b15}
.hero-container{position:relative;isolation:isolate}
.hero-art{position:absolute;z-index:-1;top:0;bottom:0;left:0;right:-6.4%;pointer-events:none}
.hero-art svg{position:absolute;right:0;top:50%;transform:translateY(-50%);height:112%;width:auto}
.hero[data-hero="layers"] .art-systems,.hero[data-hero="systems"] .art-layers{display:none}
.hero-art::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#040b15 0%,#040b15f2 34%,#040b1599 50%,transparent 66%)}
.hero::after{content:'';position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;background:linear-gradient(0deg,#040b15 0%,transparent 100%)}
.za-pulse{stroke-dasharray:12 88;stroke-dashoffset:100;animation:za-flow 4.5s linear infinite;animation-delay:var(--d,0s)}
@keyframes za-flow{to{stroke-dashoffset:0}}
.za-stack{animation:za-hover 6s ease-in-out infinite}
@keyframes za-hover{50%{transform:translateY(-7px)}}
@media(min-width:1600px){.hero-art svg{height:118%}}
@media(max-width:1100px){.hero-art{right:-14%}.hero-art svg{height:104%}.hero-art::after{background:linear-gradient(90deg,#040b15 0%,#040b15f2 36%,#040b1599 52%,transparent 68%)}}



.hero-container{min-height:590px;padding-block:68px 84px}
.hero-content{width:82%;max-width:950px}
.hero h1{font-size:clamp(54px,5.9vw,82px);line-height:1.08;letter-spacing:-.045em}
.hero h1 span{color:#9fc5f5}
.hero-subtitle{max-width:530px}
.services{position:relative;background:transparent;padding-top:45px}
.services .eyebrow::before{content:'';display:inline-block;width:32px;height:1px;background:#6096cc;vertical-align:middle;margin-right:12px}
.project-card p{margin-bottom:0}
@media(min-width:1600px){.hero-container{min-height:640px}}
@media(max-width:1100px){.hero-container{min-height:560px;padding-block:64px 76px}.hero-content{width:90%}.hero h1{font-size:clamp(52px,6.2vw,66px)}}
@media(max-width:760px){.hero-container{min-height:0;padding-block:48px 100px}.hero-content{width:100%;max-width:580px}.hero h1{font-size:clamp(43px,7.4vw,56px);margin-block:22px}.hero-subtitle{max-width:490px}.hero-actions{gap:12px;margin-top:28px}.services{padding-top:22px}}
@media(max-width:440px){.hero-container{min-height:0;padding-block:38px 90px}.hero h1{font-size:44px}.hero h1 br{display:none}.hero-actions{display:grid;grid-template-columns:1fr;justify-items:start;gap:12px}.hero-actions .button{min-width:210px;min-height:48px}.hero-subtitle{font-size:16px;line-height:1.75}}

/* Preserve separation between the two headline phrases on small screens. */
@media(max-width:440px){.hero h1{font-size:42px}.hero h1 br{display:initial}}

/* Phones: the illustration is dropped (it cost a full screen of scrolling); a soft glow keeps the hero from going flat. */
@media(max-width:760px){.hero-art{display:none}.hero::after{display:none}.hero-container{min-height:0;padding-block:44px 56px}.hero{background:radial-gradient(ellipse 70% 55% at 100% 0%,#1b4a7a55,transparent 70%),radial-gradient(ellipse 60% 40% at 0% 100%,#0f2c4d55,transparent 70%),#040b15}.services{padding-top:36px}}
@media(max-width:440px){.hero-container{padding-block:36px 48px}}