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:root[data-theme="light"]{--bg:#f5f8fc;--bg2:#edf3f9;--panel:#fff;--panel2:#f5f8fc;--text:#0c1830;--muted:#5c6b80;--line:rgba(25,58,100,.14);--shadow:0 24px 70px rgba(38,72,115,.12)}
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.experience-layout{align-items:start}.timeline{position:relative}.timeline:before{content:"";position:absolute;top:8px;bottom:0;right:7px;width:1px;background:var(--line)}html[dir="ltr"] .timeline:before{right:auto;left:7px}.timeline article{position:relative;padding:0 38px 38px}.timeline article:before{content:"";position:absolute;right:0;top:7px;width:15px;height:15px;border-radius:50%;background:var(--bg2);border:3px solid var(--cyan);box-shadow:0 0 0 7px rgba(86,215,255,.08)}html[dir="ltr"] .timeline article:before{right:auto;left:0}.timeline-date{font:700 .72rem Inter;color:var(--cyan)}.timeline h3{margin:6px 0 0;font-size:1.25rem}.timeline p{font:600 .9rem Inter;color:var(--text);margin:2px 0 9px}.timeline small{color:var(--muted)}.publication-list{border-top:1px solid var(--line)}.publication{display:grid;grid-template-columns:90px 1fr 100px;gap:28px;align-items:center;padding:32px 0;border-bottom:1px solid var(--line)}.pub-year{font:800 1.25rem Inter;color:var(--cyan)}.pub-main>span{font:700 .7rem Inter;color:var(--muted);text-transform:uppercase}.pub-main h3{margin:8px 0;font:700 1.18rem/1.5 Inter}.pub-main p{color:var(--muted);margin:0}.pub-actions{display:flex;gap:20px;margin-top:14px}.pub-actions a{color:var(--cyan);font-size:.82rem}.pub-badge{display:grid;place-items:center;width:85px;height:85px;border-radius:50%;background:linear-gradient(145deg,rgba(86,215,255,.16),rgba(125,108,255,.14));font:800 1.3rem Inter;color:var(--cyan);text-align:center}.pub-badge small{display:block;font-size:.55rem}.pub-badge.subtle{font-size:.75rem;color:var(--muted)}.insights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.insight-card{min-height:310px;padding:28px;border:1px solid var(--line);border-radius:23px;background:var(--panel);display:flex;flex-direction:column;transition:.3s}.insight-card:hover{transform:translateY(-6px);border-color:rgba(86,215,255,.35)}.insight-card>span{font:700 .7rem Inter;color:var(--cyan);text-transform:uppercase}.insight-card h3{font-size:1.3rem;margin:28px 0 12px}.insight-card p{color:var(--muted)}.insight-card b{margin-top:auto;color:var(--cyan);font:700 .78rem Inter}.contact-section{padding-top:60px}.contact-panel{position:relative;display:grid;grid-template-columns:1.35fr .65fr;gap:50px;align-items:center;padding:55px;border:1px solid rgba(86,215,255,.2);border-radius:30px;background:linear-gradient(135deg,rgba(19,45,73,.95),rgba(20,24,49,.95));overflow:hidden}.contact-panel:after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:var(--cyan);filter:blur(150px);opacity:.18;left:-100px;top:-120px}.contact-panel h2{font-size:clamp(2rem,3.5vw,3.6rem);position:relative;z-index:1}.contact-panel p{color:#b8c8da;position:relative;z-index:1}.contact-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end;position:relative;z-index:1}.site-footer{padding:38px 0;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1fr auto auto;gap:40px;align-items:center;color:var(--muted)}.footer-brand{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--panel);font:800 .8rem Inter;color:var(--text)}.footer-grid>div:first-child{display:flex;align-items:center;gap:12px}.footer-grid p{margin:0;font-size:.78rem}.footer-links{display:flex;gap:18px;font:600 .75rem Inter}.footer-links a:hover{color:var(--cyan)}.copyright{font-family:Inter}.toast{position:fixed;z-index:100;bottom:24px;left:50%;transform:translate(-50%,30px);padding:11px 16px;border-radius:12px;background:var(--text);color:var(--bg);font-weight:700;opacity:0;pointer-events:none;transition:.3s}.toast.show{opacity:1;transform:translate(-50%,0)}
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.cv-page{padding:40px 0 90px}.cv-actions{display:flex;justify-content:flex-end;gap:10px;margin-bottom:18px}.cv-sheet{max-width:1000px;background:var(--panel);border:1px solid var(--line);border-radius:25px;padding:50px;box-shadow:var(--shadow)}.cv-header{display:grid;grid-template-columns:1fr auto;gap:40px;padding-bottom:35px;border-bottom:2px solid var(--line)}.cv-monogram{display:inline-grid;place-items:center;width:55px;height:55px;border-radius:16px;background:linear-gradient(145deg,#1d456b,#4b5ed4);font:800 .9rem Inter;margin-bottom:18px}.cv-header h1{font:800 2.4rem Inter;margin:0}.cv-header h2{font:600 1rem Inter;color:var(--cyan);margin:6px 0 14px}.cv-header p{color:var(--muted);max-width:670px}.cv-header address{font-style:normal;text-align:end}.cv-header address>*{display:block;margin-bottom:8px;color:var(--muted);font-size:.82rem}.cv-section{margin-top:38px}.cv-section>h3{font-size:1.2rem;color:var(--cyan);padding-bottom:8px;border-bottom:1px solid var(--line)}.cv-item{display:grid;grid-template-columns:280px 1fr;gap:30px;padding:18px 0}.cv-item h4{margin:0;font-size:.95rem}.cv-item small{color:var(--muted)}.cv-item p,.cv-item li{color:var(--muted);font-size:.88rem}.not-found{min-height:100vh;display:grid;place-items:center;text-align:center;padding:30px}.not-found span{font:900 8rem Inter;background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;color:transparent}.not-found h1{font-size:2rem}.not-found p{color:var(--muted)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .75s ease,transform .75s ease}.reveal.visible{opacity:1;transform:none}@keyframes flowdash{to{stroke-dashoffset:-100}}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1000px){.desktop-nav{display:none}.menu-btn{display:block}.brand{min-width:auto}.nav-actions{margin-inline-start:auto}.mobile-nav{position:fixed;z-index:49;top:var(--header);left:18px;right:18px;display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--line);border-radius:18px;background:var(--panel);box-shadow:var(--shadow);opacity:0;transform:translateY(-15px);pointer-events:none;transition:.25s}.mobile-nav.open{opacity:1;transform:none;pointer-events:auto}.mobile-nav a{padding:11px 12px;border-radius:10px;color:var(--muted)}.mobile-nav a:hover{background:var(--panel2);color:var(--text)}.hero-grid,.two-col,.contact-panel{grid-template-columns:1fr}.hero-art{min-height:520px}.section-title{position:static}.section-head{align-items:flex-start}.project-feature{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.stats article:nth-child(2){border-inline-end:0}.stats article:nth-child(-n+2){border-bottom:1px solid var(--line)}.insights-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.contact-actions{justify-content:flex-start}.cv-item{grid-template-columns:1fr}.cv-header{grid-template-columns:1fr}.cv-header address{text-align:start}}
@media(max-width:700px){:root{--header:74px}.container{width:min(100% - 26px,var(--max))}.brand-copy strong{font-size:.78rem}.brand-copy small{display:none}.hero{padding-top:45px}.hero-grid{gap:25px}.hero h1{font-size:clamp(2.8rem,15vw,4.7rem)}.hero-art{min-height:400px}.art-panel{width:92%}.ring-one{width:410px;height:410px}.ring-two{width:460px;height:460px}.art-caption{font-size:.72rem}.stats{margin-top:35px}.stats article{padding:18px}.section{padding:78px 0}.section h2,.page-hero h1,.case-hero h1,.article-header h1{font-size:2.35rem}.section-head{flex-direction:column;align-items:flex-start}.value-grid,.expertise-grid,.project-grid,.deliverable-grid,.decision-grid{grid-template-columns:1fr}.project-feature{grid-column:auto}.project-visual{min-height:270px}.publication{grid-template-columns:62px 1fr}.pub-badge{display:none}.publication .pub-main h3{font-size:1rem}.case-summary{grid-template-columns:1fr}.case-summary div{border-inline-end:0;border-bottom:1px solid var(--line)}.process-list li{grid-template-columns:1fr;gap:5px}.method-flow i{transform:rotate(90deg)}.contact-panel{padding:30px}.cv-sheet{padding:25px}.footer-links{flex-wrap:wrap}.cursor-glow{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.reveal{opacity:1;transform:none;transition:none}.art-ring,.flow-svg path{animation:none}}


/* V3: approved portrait, LinkedIn and refined case-study presentation */
.portrait-panel{isolation:isolate;background:#091421}
.profile-photo{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center 42%;
  z-index:1;transition:transform .65s cubic-bezier(.2,.8,.2,1);
}
.portrait-panel:hover .profile-photo{transform:scale(1.025)}
.portrait-shade{
  position:absolute;inset:0;z-index:2;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(5,12,22,.05) 42%,rgba(5,12,22,.88) 100%),
    linear-gradient(90deg,rgba(5,12,22,.18),transparent 45%,rgba(5,12,22,.08));
}
.portrait-panel .tech-chip{z-index:4;background:rgba(6,15,27,.76);border-color:rgba(255,255,255,.22)}
.portrait-panel .art-caption{z-index:4;border-top-color:rgba(255,255,255,.28)}
.portrait-panel .art-caption small{color:#d7e4f4}
.portrait-panel .art-caption strong{color:#fff}
.hero-contact a[href*="linkedin"]{color:var(--cyan);font-weight:700}

.cv-side{display:grid;justify-items:end;gap:16px}
.cv-profile-photo{
  width:118px;height:118px;object-fit:cover;object-position:center 42%;
  border-radius:26px;border:1px solid var(--line);
  box-shadow:0 16px 38px rgba(0,0,0,.22);
}
.detector-visual b{max-width:75%;text-align:center;line-height:1.3}

@media(max-width:760px){
  .cv-side{justify-items:start}
  .cv-header address{text-align:start}
  .cv-profile-photo{width:96px;height:96px;border-radius:22px}
}
@media print{
  .cv-profile-photo{box-shadow:none;border:1px solid #ddd}
}


/* V3.1: OpenFOAM professional training */
.training-note{
  margin-top:18px;padding:14px 16px;border:1px solid var(--line);
  border-radius:16px;background:rgba(86,215,255,.045);
  color:var(--muted);font-size:.88rem;
}
.training-note strong{color:var(--cyan);margin-inline-end:6px}
.training-item h3{color:var(--cyan)}


/* V3.2 — Arak fire pump case study */
.case-wide{max-width:1180px}
.case-hero-premium{padding:100px 0 76px}
.case-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.case-hero-premium h1{font-size:clamp(2.55rem,4.4vw,5rem)}
.case-hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:26px}
.case-hero-tags span{padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:rgba(10,25,43,.62);font:700 .68rem Inter;color:#cbefff}

.firewater-schematic{position:relative;border:1px solid rgba(86,215,255,.22);border-radius:30px;background:linear-gradient(145deg,rgba(15,39,64,.94),rgba(8,18,34,.98));padding:24px;box-shadow:var(--shadow);overflow:hidden}
.firewater-schematic:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,180,220,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,180,220,.055) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,black,transparent)}
.firewater-schematic svg{position:relative;width:100%;height:auto;z-index:1}
.network-main,.network-branch{fill:none;stroke:url(#pipeGradient);stroke-width:7;stroke-linecap:round;stroke-linejoin:round;filter:url(#glow)}
.network-branch{stroke-width:4;opacity:.72}
.network-node rect,.network-node circle{fill:rgba(8,18,34,.94);stroke:rgba(86,215,255,.65);stroke-width:2}
.network-node path{fill:rgba(86,215,255,.16);stroke:#56d7ff;stroke-width:1.5}
.network-node text,.network-callout text{fill:#eaf7ff;text-anchor:middle;font-family:Inter;font-weight:700;font-size:13px}
.network-node text:last-child{fill:#8fb3ce;font-size:10px}
.network-callout rect{fill:rgba(125,108,255,.13);stroke:rgba(125,108,255,.62);stroke-width:1.5}
.network-callout text:last-child{fill:#aab8ff;font-size:11px}
.flow-dot{fill:#ffb86a;filter:url(#glow);animation:networkPulse 2.3s ease-in-out infinite}
.dot-b{animation-delay:.6s}.dot-c{animation-delay:1.2s}
.schematic-note{position:relative;z-index:2;color:#91a8bc;font-size:.72rem;text-align:center;margin-top:4px}
@keyframes networkPulse{0%,100%{opacity:.35;transform:scale(.8)}50%{opacity:1;transform:scale(1.4)}}

.case-summary-four{grid-template-columns:repeat(4,1fr)}
.intro-split{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}
.intro-split h2{font-size:clamp(2rem,3.2vw,3.4rem)}
.intro-split>p{margin:0;color:var(--muted);font-size:1.05rem}

.section-inline-head{display:flex;justify-content:space-between;align-items:end;gap:45px;margin-bottom:28px}
.section-inline-head>div{max-width:620px}
.section-inline-head>p{max-width:430px;color:var(--muted);font-size:.88rem;margin:0}

.engineering-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.engineering-metrics article{min-height:145px;padding:23px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(145deg,var(--panel),color-mix(in srgb,var(--panel) 82%,var(--bg)));display:flex;flex-direction:column;justify-content:space-between}
.engineering-metrics span{font:800 clamp(1.35rem,2.4vw,2.25rem)/1 Inter;color:var(--cyan);letter-spacing:-.04em}
.engineering-metrics small{color:var(--muted);font-size:.78rem}

.engineering-journey{position:relative;margin-top:35px}
.engineering-journey:before{content:"";position:absolute;top:12px;bottom:12px;right:27px;width:1px;background:linear-gradient(var(--cyan),rgba(125,108,255,.55),transparent)}
html[dir="ltr"] .engineering-journey:before{right:auto;left:27px}
.engineering-journey article{position:relative;display:grid;grid-template-columns:56px 1fr;gap:24px;padding-bottom:35px}
.journey-number{position:relative;z-index:2;width:56px;height:56px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(145deg,#123652,#17244d);border:1px solid rgba(86,215,255,.36);font:800 .78rem Inter;color:var(--cyan);box-shadow:0 8px 25px rgba(0,0,0,.18)}
.engineering-journey h3{font-size:1.15rem;margin:3px 0 7px}
.engineering-journey p{margin:0;color:var(--muted);font-size:.94rem}

.scenario-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:20px;background:var(--panel)}
.scenario-table{width:100%;border-collapse:collapse;min-width:760px}
.scenario-table th,.scenario-table td{padding:18px 20px;text-align:start;border-bottom:1px solid var(--line)}
.scenario-table th{font-size:.73rem;color:var(--cyan);background:rgba(86,215,255,.045)}
.scenario-table td{font-size:.85rem;color:var(--muted)}
.scenario-table td:first-child{font:700 .78rem Inter;color:var(--text)}
.scenario-table tr:last-child td{border-bottom:0}

.decision-grid-pro{grid-template-columns:repeat(3,1fr)}
.decision-grid-pro article{position:relative;min-height:210px;padding:25px;overflow:hidden}
.decision-grid-pro article>span{display:block;font:800 .72rem Inter;color:var(--cyan);margin-bottom:25px}
.decision-grid-pro h3{font-size:1rem;margin:0 0 10px}
.decision-grid-pro p{color:var(--muted)}

.case-conclusion{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;padding:38px;border:1px solid rgba(86,215,255,.2);border-radius:26px;background:linear-gradient(135deg,rgba(14,39,64,.85),rgba(20,24,49,.88))}
.case-conclusion h2{font-size:clamp(1.8rem,3vw,3rem)}
.case-conclusion>p{color:#b7c7d8;margin:0}

.case-note strong,.case-note span{display:block}
.case-note strong{color:var(--amber);margin-bottom:7px}
.case-cta{display:grid;grid-template-columns:1.25fr .75fr;gap:45px;align-items:center;margin-top:65px;padding:42px;border-radius:26px;border:1px solid var(--line);background:var(--panel)}
.case-cta h2{font-size:clamp(1.65rem,2.8vw,2.8rem);margin:0}
.case-cta>div:last-child{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}

@media(max-width:960px){
  .case-hero-grid,.intro-split,.case-conclusion,.case-cta{grid-template-columns:1fr}
  .case-summary-four{grid-template-columns:repeat(2,1fr)}
  .engineering-metrics{grid-template-columns:repeat(2,1fr)}
  .decision-grid-pro{grid-template-columns:repeat(2,1fr)}
  .section-inline-head{align-items:flex-start;flex-direction:column}
  .case-cta>div:last-child{justify-content:flex-start}
}
@media(max-width:700px){
  .case-hero-premium{padding-top:55px}
  .case-summary-four,.engineering-metrics,.decision-grid-pro{grid-template-columns:1fr}
  .engineering-journey article{grid-template-columns:46px 1fr;gap:16px}
  .journey-number{width:46px;height:46px;border-radius:14px}
  .engineering-journey:before{right:22px}
  html[dir="ltr"] .engineering-journey:before{right:auto;left:22px}
  .case-conclusion,.case-cta{padding:25px}
  .firewater-schematic{padding:10px;border-radius:22px}
}


/* V3.3 — No-photo profile presentation */
.portrait-panel,.profile-photo,.portrait-shade,.cv-profile-photo,.cv-side{display:none!important}
.monogram{display:grid!important}