:root{--bg:#fff;--fg:#263b36;--card:#f8fbfa;--muted:#687872;--primary:#198b5c;--accent:#bd8b2e;--border:#dfe7e3;--secondary:#eef3f0;--shadow:0 20px 45px -30px rgba(25,55,45,.45);--radius:10px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:Manrope,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{width:min(1152px,calc(100% - 48px));margin:auto}h1,h2,h3{font-family:Sora,Arial,sans-serif;letter-spacing:-.025em;margin:0}h1{font-size:clamp(2.6rem,6vw,4.5rem);line-height:1.05;font-weight:600}h1 span{background:linear-gradient(100deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}h2{font-size:clamp(2rem,4vw,2.8rem);font-weight:600}h3{font-size:1.15rem}.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(223,231,227,.75);background:rgba(255,255,255,.86);backdrop-filter:blur(14px)}.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{font-family:Sora;font-size:15px;font-weight:600}.brand span{color:var(--primary)}.nav{display:flex;gap:28px;align-items:center;font-size:14px;color:var(--muted)}.nav a:hover{color:var(--fg)}.desktop-contact,.nav-contact{border:1px solid rgba(25,139,92,.4);border-radius:6px;padding:10px 16px;color:var(--primary);font-weight:600}.nav-contact{display:none}.menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--fg);cursor:pointer}.hero{position:relative;overflow:hidden;background:radial-gradient(120% 80% at 15% 0%,rgba(25,139,92,.10),transparent 62%),radial-gradient(90% 70% at 95% 20%,rgba(189,139,46,.08),transparent 62%)}.grid-backdrop{position:absolute;inset:0;background-image:linear-gradient(#dfe7e3 1px,transparent 1px),linear-gradient(90deg,#dfe7e3 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(70% 60% at 50% 0%,black,transparent 80%);opacity:.7}.hero-grid{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center;padding-top:112px;padding-bottom:112px}.eyebrow{font-family:"JetBrains Mono",monospace;font-size:11px;text-transform:uppercase;letter-spacing:.25em;color:var(--primary);margin:0}.eyebrow.accent{color:var(--accent)}.lead{max-width:680px;margin:24px 0 0;font-size:18px;line-height:1.75;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.actions.center{justify-content:center}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:6px;padding:13px 24px;font-size:14px;font-weight:700;transition:.2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-outline{border:1px solid var(--border);background:transparent}.btn-outline:hover{background:var(--secondary);transform:translateY(-1px)}.portrait-wrap{position:relative}.portrait-glow{position:absolute;inset:-12px;border-radius:18px;background:rgba(25,139,92,.1);filter:blur(24px)}.portrait{position:relative;width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--border);border-radius:16px;display:block}.stats-section{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(248,251,250,.65)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px}.stat{padding:38px 8px}.stat strong{display:block;font-family:Sora;color:var(--primary);font-size:clamp(2rem,4vw,2.7rem)}.stat span{display:block;margin-top:7px;font-size:13px;color:var(--muted)}.section{padding-top:96px;padding-bottom:96px}.section-intro{max-width:680px;color:var(--muted);margin:12px 0 0}.projects-grid,.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}.project-card{display:flex;flex-direction:column;min-height:290px;padding:28px;border:1px solid var(--border);border-radius:12px;background:var(--card);box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}.project-card:hover{transform:translateY(-5px);box-shadow:0 25px 55px -30px rgba(25,55,45,.55)}.project-head{display:flex;justify-content:space-between;gap:16px}.project-head span{font-family:"JetBrains Mono";font-size:11px;color:var(--primary);opacity:0;transition:.2s}.project-card:hover .project-head span{opacity:1}.role,.period{font-family:"JetBrains Mono";font-size:11px;color:var(--accent);margin:6px 0 0}.description{font-size:13px;line-height:1.75;color:var(--muted);flex:1;margin:16px 0}.tags,.stack{display:flex;flex-wrap:wrap;gap:8px}.tags span{border:1px solid var(--border);background:var(--secondary);border-radius:999px;padding:6px 11px;font-size:11px;color:var(--muted)}.project-card small{margin-top:18px;font-family:"JetBrains Mono";font-size:10px;color:#87958f;word-break:break-all}.section-alt{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(248,251,250,.55)}.service-card{border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,.65);padding:28px}.service-card p,.timeline-item>p:last-child{font-size:13px;line-height:1.75;color:var(--muted);margin:12px 0}.service-card ul{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:9px;font-size:13px;color:var(--muted)}.service-card li:before{content:"";display:inline-block;width:12px;height:4px;border-radius:5px;background:var(--primary);margin:0 9px 2px 0}.stack{margin-top:48px}.stack span{border:1px solid var(--border);border-radius:6px;padding:7px 11px;font-family:"JetBrains Mono";font-size:10px;color:var(--muted)}.timeline{border-left:1px solid var(--border);margin-top:48px;padding-left:32px}.timeline-item{position:relative;padding-bottom:38px}.timeline-item:last-child{padding-bottom:0}.dot{position:absolute;left:-39px;top:3px;width:13px;height:13px;border-radius:50%;border:2px solid var(--primary);background:var(--bg)}.period{color:var(--primary);text-transform:uppercase;letter-spacing:.14em}.contact-section{border-top:1px solid var(--border);background:rgba(248,251,250,.65)}.contact-inner{text-align:center;padding:96px 0}.contact-inner p{max-width:620px;margin:16px auto 0;color:var(--muted);line-height:1.7;font-size:14px}footer{border-top:1px solid var(--border)}.footer-inner{display:flex;justify-content:space-between;gap:20px;padding:30px 0;font-size:13px;color:var(--muted)}.back-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--primary);cursor:pointer;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s}.back-top.show{opacity:1;pointer-events:auto}.reveal{animation:fadeUp .8s ease both}@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}@media(max-width:800px){.container{width:min(100% - 32px,680px)}.nav{position:absolute;left:16px;right:16px;top:68px;display:none;flex-direction:column;align-items:stretch;gap:0;padding:10px;border:1px solid var(--border);border-radius:10px;background:#fff;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:13px 12px}.nav-contact{display:block;text-align:center;margin-top:5px}.desktop-contact{display:none}.menu-toggle{display:block}.hero-grid{grid-template-columns:1fr;padding-top:72px;padding-bottom:72px;gap:42px}.portrait-wrap{max-width:430px;margin:auto}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat{padding:28px 4px}.projects-grid,.services-grid{grid-template-columns:1fr;gap:18px}.section,.contact-inner{padding-top:72px;padding-bottom:72px}}@media(max-width:480px){h1{font-size:2.45rem}.lead{font-size:16px}.actions .btn{width:100%}.stats-grid{grid-template-columns:1fr 1fr}.footer-inner{flex-direction:column;text-align:center}.project-card,.service-card{padding:22px}}
.certificates-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}.certificate-card{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:14px;background:#fff;overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}.certificate-card:hover{transform:translateY(-5px);box-shadow:0 25px 55px -30px rgba(25,55,45,.55)}.certificate-icon{height:105px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(25,139,92,.12),rgba(189,139,46,.12));font-size:38px;color:var(--accent)}.certificate-content{padding:24px;display:flex;flex-direction:column;flex:1}.certificate-label{font-family:"JetBrains Mono",monospace;font-size:10px;letter-spacing:.18em;color:var(--primary);margin:0 0 10px}.certificate-content h3{font-size:1.05rem;line-height:1.35}.certificate-content p:not(.certificate-label){font-size:13px;line-height:1.7;color:var(--muted);margin:12px 0}.certificate-org{font-size:11px;color:var(--accent);font-weight:700;margin-top:auto;padding-top:14px}.certificate-btn{margin-top:18px;border:1px solid var(--border);background:var(--secondary);color:var(--primary);border-radius:6px;padding:11px 12px;font:600 12px Manrope,Arial,sans-serif;cursor:pointer}.certificate-btn:hover{background:#e5eee9}.certificate-modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:24px}.certificate-modal.open{display:flex}.certificate-modal-backdrop{position:absolute;inset:0;background:rgba(20,35,30,.72);backdrop-filter:blur(5px)}.certificate-modal-dialog{position:relative;z-index:1;width:min(900px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:12px;padding:18px;box-shadow:0 30px 80px rgba(0,0,0,.3)}.certificate-close{position:absolute;right:12px;top:10px;width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--fg);font-size:24px;cursor:pointer;z-index:2}.sample-certificate{border:10px solid #f1f4f2;padding:9px;background:#fff}.certificate-paper{border:2px solid var(--primary);padding:42px 50px;text-align:center;min-height:500px;position:relative;background:linear-gradient(135deg,#fff,#fbfdfc)}.certificate-paper .seal{width:76px;height:76px;margin:0 auto 18px;border:2px solid var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:27px}.certificate-paper .small-title{font:700 11px "JetBrains Mono",monospace;letter-spacing:.22em;color:var(--accent)}.certificate-paper h2{margin:14px 0 6px;font-size:clamp(1.5rem,4vw,2.4rem)}.certificate-paper .presented{margin:22px 0 5px;color:var(--muted);font-size:13px}.certificate-paper .recipient{font:700 22px Sora,Arial,sans-serif;color:var(--primary)}.certificate-paper .achievement{max-width:680px;margin:18px auto;line-height:1.7;color:var(--muted);font-size:14px}.certificate-paper .institution{font-weight:700;color:var(--fg);margin-top:22px}.certificate-signatures{display:flex;justify-content:space-between;gap:40px;margin-top:45px;color:var(--muted);font-size:11px}.certificate-signatures span{display:block;border-top:1px solid var(--border);padding-top:8px;min-width:180px}.sample-note{margin-top:15px;text-align:center;color:#7b8984;font-size:10px;font-family:"JetBrains Mono",monospace}@media(max-width:900px){.certificates-grid{grid-template-columns:1fr 1fr}}@media(max-width:800px){.certificates-grid{grid-template-columns:1fr}.certificate-paper{padding:32px 22px;min-height:450px}.certificate-signatures{margin-top:30px;gap:15px}.certificate-signatures span{min-width:0;flex:1}.certificate-paper:before{font-size:28px}}

/* Professional certificate presentation */
.certificate-frame{padding:14px;background:linear-gradient(135deg,#eef3ef,#f8f5e8);border:1px solid #d9dfda}
.certificate-paper{position:relative;overflow:hidden;border:1px solid #b79a53;min-height:620px;padding:38px 52px;text-align:center;background:#fffdf7;box-shadow:inset 0 0 0 8px #f7f1df,inset 0 0 0 10px #c9ad67}
.certificate-paper:after{content:"";position:absolute;inset:18px;border:1px solid rgba(183,154,83,.45);pointer-events:none}
.certificate-watermark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-22deg);font:700 150px Sora,Arial,sans-serif;letter-spacing:.08em;color:rgba(20,70,52,.035);pointer-events:none}
.certificate-topline{position:relative;z-index:1;font:600 9px "JetBrains Mono",monospace;letter-spacing:.15em;color:#68766f;margin-bottom:22px}
.certificate-emblem{position:relative;z-index:1;width:74px;height:74px;margin:0 auto 15px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid #b79a53;outline:5px double rgba(183,154,83,.28);font:700 20px Sora,Arial,sans-serif;color:#173f31;background:#fffdf7}
.certificate-paper .small-title{position:relative;z-index:1;font:700 11px "JetBrains Mono",monospace;letter-spacing:.25em;color:#987b35}
.certificate-paper h2{position:relative;z-index:1;margin:13px 0 8px;font-size:clamp(1.5rem,4vw,2.25rem);color:#173f31}
.certificate-paper .presented{position:relative;z-index:1;margin:20px 0 5px;color:#6c7771;font-size:13px}
.certificate-paper .recipient{position:relative;z-index:1;font:700 clamp(1.25rem,3vw,1.8rem) Sora,Arial,sans-serif;color:#173f31}
.certificate-org-line{position:relative;z-index:1;margin-top:12px;font-size:12px;color:#65716b}
.certificate-role{position:relative;z-index:1;display:inline-block;margin:15px 0 2px;padding:7px 14px;border:1px solid #d6c58f;border-radius:999px;font:600 10px "JetBrains Mono",monospace;color:#806829}
.certificate-paper .achievement{position:relative;z-index:1;max-width:690px;margin:18px auto;line-height:1.75;color:#5e6863;font-size:13px}
.certificate-meta{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:680px;margin:25px auto 0;padding:13px 0;border-top:1px solid #ddd7c4;border-bottom:1px solid #ddd7c4}
.certificate-meta div{display:flex;flex-direction:column;gap:4px}
.certificate-meta small{font:600 8px "JetBrains Mono",monospace;letter-spacing:.12em;color:#8b928d;text-transform:uppercase}
.certificate-meta strong{font-size:10px;color:#34443d}
.certificate-signature-area{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:end;gap:35px;max-width:680px;margin:30px auto 0;text-align:left}
.signature-block,.issuer-block{flex:1}
.digital-signature{font-family:"Brush Script MT","Segoe Script",cursive;font-size:30px;color:#173f31;margin-bottom:2px;transform:rotate(-3deg)}
.signature-block span,.issuer-block span{display:block;border-top:1px solid #aaa99e;padding-top:7px;font-size:9px;color:#747c77}
.issuer-block{text-align:right}
.issuer-block strong{display:block;font-size:11px;color:#273b33;margin-bottom:3px}
.verification-row{position:relative;z-index:1;display:flex;justify-content:space-between;gap:15px;margin-top:28px;font:500 8px "JetBrains Mono",monospace;color:#818983}
@media(max-width:700px){.certificate-paper{padding:32px 22px;min-height:590px}.certificate-meta{grid-template-columns:1fr}.certificate-signature-area{gap:18px}.digital-signature{font-size:25px}.verification-row{flex-direction:column;text-align:center}.certificate-watermark{font-size:90px}}

/* Certificate design preview — styled from the user's uploaded certificate reference. */
.certificate-frame{padding:16px;background:#f4f1e8;border:1px solid #d9d0bc}
.certificate-paper.sample-design{position:relative;overflow:hidden;min-height:600px;padding:64px 70px 46px;text-align:center;background:#fffefb;border:2px solid #c59a43;box-shadow:inset 0 0 0 8px #fffefb,inset 0 0 0 10px #d5b56e}
.certificate-paper.sample-design:before{content:"";position:absolute;inset:18px;border:1px solid #d5b56e;pointer-events:none}
.certificate-inner-border{position:absolute;inset:26px;border:1px solid rgba(197,154,67,.42);pointer-events:none}
.certificate-corner{position:absolute;width:0;height:0;z-index:2}
.certificate-corner-tl{left:-2px;top:-2px;border-top:132px solid #111;border-right:132px solid transparent}
.certificate-corner-tl:after{content:"";position:absolute;left:14px;top:-119px;width:5px;height:142px;background:#d6ad5e;transform:rotate(42deg);transform-origin:top center}
.certificate-corner-br{right:-2px;bottom:-2px;border-bottom:132px solid #111;border-left:132px solid transparent}
.certificate-corner-br:after{content:"";position:absolute;right:14px;bottom:-119px;width:5px;height:142px;background:#d6ad5e;transform:rotate(42deg);transform-origin:bottom center}
.certificate-watermark{position:absolute;left:50%;top:52%;transform:translate(-50%,-50%) rotate(-18deg);font:700 100px Georgia,serif;letter-spacing:.08em;color:rgba(80,65,35,.035);white-space:nowrap;pointer-events:none}
.certificate-design-note{position:relative;z-index:3;font:700 8px "JetBrains Mono",monospace;letter-spacing:.18em;color:#8f7542;margin-bottom:14px}
.certificate-paper.sample-design h2{position:relative;z-index:3;margin:0 auto 12px;max-width:760px;font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.65rem,4vw,2.65rem);line-height:1.08;color:#111}
.certificate-paper.sample-design .presented{position:relative;z-index:3;margin:10px 0 5px;color:#222;font-size:16px}
.certificate-paper.sample-design .recipient{position:relative;z-index:3;font:700 clamp(1.65rem,4vw,2.45rem) Arial,sans-serif;color:#111;margin-top:4px}
.recipient-line{position:relative;z-index:3;width:min(520px,75%);height:1px;background:#8e7950;margin:5px auto 22px}
.certificate-paper.sample-design .achievement{position:relative;z-index:3;max-width:720px;margin:0 auto 10px;line-height:1.65;color:#333;font-size:14px}
.project-name{position:relative;z-index:3;max-width:760px;margin:10px auto 3px;font:700 clamp(1.05rem,2.6vw,1.55rem) Arial,sans-serif;line-height:1.3;color:#111}
.organization-line{position:relative;z-index:3;font-weight:700;font-size:14px;color:#333}
.certificate-footer{position:relative;z-index:3;display:grid;grid-template-columns:1fr 90px 1fr;align-items:end;gap:28px;max-width:760px;margin:42px auto 0}
.signature-placeholder,.date-placeholder{text-align:center;font-size:11px;color:#222}
.blank-signature{height:32px;border-bottom:1px solid #222;margin-bottom:7px}
.signature-placeholder strong,.date-placeholder strong{font-size:11px}
.date-value{height:32px;border-bottom:1px solid #222;margin-bottom:7px;padding-top:12px;font-family:"Segoe Script",cursive;font-size:13px}
.certificate-medallion{width:70px;height:70px;margin:auto;border-radius:50%;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle,#f8e9b9 0 34%,#b67d22 35% 41%,#e4c06b 42% 57%,#a86d18 58% 100%);box-shadow:0 2px 5px rgba(0,0,0,.2)}
.certificate-medallion span{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#f7e7b0;border:2px solid #9d6d20;color:#8c5d16;font-size:20px}
@media(max-width:700px){.certificate-paper.sample-design{min-height:540px;padding:50px 28px 36px}.certificate-corner-tl{border-top-width:90px;border-right-width:90px}.certificate-corner-br{border-bottom-width:90px;border-left-width:90px}.certificate-corner-tl:after,.certificate-corner-br:after{display:none}.certificate-footer{grid-template-columns:1fr 60px 1fr;gap:10px;margin-top:30px}.certificate-medallion{width:56px;height:56px}.certificate-medallion span{width:34px;height:34px}.certificate-watermark{font-size:58px}}