/* Mehedi Hasan · Editorial portfolio · Standalone, no build step required. */
:root{--bg:#f5f3ed;--surface:#fffdf8;--text:#272d29;--muted:#626963;--line:#d7d9cf;--accent:#a64426;--soft:#ece9e0;--dark:#202923;--p-accent:var(--accent);--p-text:var(--text);--p-muted:var(--muted);--p-line:var(--line);--p-glass:var(--surface);--p-glass-2:var(--soft);--p-accent-tint:#aa4b2310;--p-dim:var(--muted);color-scheme:light}
:root[data-theme=dark]{--bg:#171e1a;--surface:#202923;--text:#f1f0e7;--muted:#b0b9af;--line:#39443b;--accent:#e7a27e;--soft:#252f28;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 'DM Sans',Arial,sans-serif;-webkit-font-smoothing:antialiased}h1,h2,h3,p,figure{margin:0}h1,h2,h3,.svc-title,.edu-degree,.skill-name{font-family:Manrope,Arial,sans-serif;font-weight:500}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}img{display:block;max-width:100%}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:#b95732;color:white}[hidden]{display:none!important}.skip-link{position:fixed;top:-100px;left:20px;background:var(--surface);padding:12px;z-index:200}.skip-link:focus{top:12px}
.wrap{width:min(1220px,calc(100% - 112px));margin:auto;padding:104px 0;border-bottom:1px solid var(--line)}.sec-head{margin-bottom:48px}.num,.eyebrow,.small-label,.mono-label,.mono-sm,.mono-note,.hero-topline,.hero-bottom,.portrait-coordinate{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase}.num{display:block;color:var(--accent);margin-bottom:20px}h2{font-size:clamp(32px,4.2vw,56px);line-height:1.15;letter-spacing:-.045em}h3{font-size:23px;line-height:1.35;letter-spacing:-.03em}.serif-accent{font-family:Georgia,'Times New Roman',serif;font-style:italic;font-weight:400}.muted,.muted-sm,.section-note{color:var(--muted)}.muted-sm,.sm{font-size:14px}.big{font-size:23px;line-height:1.65;letter-spacing:-.025em}.accent,.accent-sm{color:var(--accent)}.accent-sm{font-size:13px}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.tag{display:inline-flex;border:1px solid var(--line);border-radius:4px;padding:4px 9px;font-size:10px;letter-spacing:.035em}.tag-accent{color:var(--accent);border-color:transparent;background:var(--soft)}.btn-outline,.btn-quiet,.btn-primary,.icon-btn{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:44px;padding:11px 20px;line-height:1.25;border:1px solid var(--line);background:transparent;font-size:12px;font-weight:600;transition:background .2s,color .2s,transform .2s}.btn-outline:hover{background:var(--text);border-color:var(--text);color:var(--bg)}.btn-primary{background:#dbebac;color:#243322;border-color:#dbebac}.btn-primary:hover{background:#edffd0;transform:translateY(-2px)}.btn-quiet{border:0;padding-inline:0}.btn-quiet:hover{color:var(--accent)}.lg{padding:17px 24px;min-height:54px}.icon-btn{padding:0;width:42px;height:42px;flex-shrink:0}.grow{flex:1}
/* Masthead */
.topbar{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}.pillnav{width:min(1370px,calc(100% - 80px));height:92px;margin:auto;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;font-size:12px;font-weight:700;letter-spacing:.04em;white-space:nowrap}.brand-monogram{font-size:42px;line-height:1;font-family:Georgia,serif;letter-spacing:-.11em}.brand-monogram span{color:var(--accent)}.nav-spacer{flex:1}.nav-links{display:flex;gap:27px;align-items:center}.nav-links a{font-size:12px;color:var(--muted);padding-block:9px;border-bottom:1px solid transparent}.nav-links a:hover,.nav-links a.on{color:var(--text);border-color:var(--accent)}.nav-actions{display:flex;align-items:center;gap:12px}.nav-actions .icon-btn{border:0}.burger{display:none}.mobile-menu{display:none}.nav-cv{white-space:nowrap}
/* First impression */
.hero{background:#202923;color:#f5f3e8;padding:0 max(56px,calc((100% - 1220px)/2));overflow:hidden;position:relative}.hero-topline{display:flex;justify-content:space-between;border-bottom:1px solid #ffffff20;padding:23px 0;color:#c1cab9;font-size:10px;letter-spacing:.16em}.hero-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center;padding:65px 0 50px}.hero-copy{padding:12px 0}.hero .eyebrow{color:#d1d7c9;text-transform:none;letter-spacing:.035em;font-size:12px;display:flex;align-items:center;gap:10px}.status-dot{width:7px;height:7px;background:#d4e6a7;border-radius:100%;box-shadow:0 0 0 5px #d4e6a710;flex-shrink:0}.hero h1{font-size:clamp(45px,4.85vw,72px);line-height:1.07;font-weight:500;letter-spacing:-.058em;margin:27px 0}.hero h1 .serif-accent{color:#d4e6a7;letter-spacing:-.055em}.lede{max-width:495px;font-size:14px;line-height:1.85;color:#bfc8be}.cta-row{display:flex;gap:30px;align-items:center;margin-top:32px}.hero .btn-quiet:hover{color:#d4e6a7}.hero-signature{display:flex;flex-direction:column;border-top:1px solid #ffffff20;padding-top:23px;margin-top:44px;width:max-content}.signature-name{font-family:Georgia,serif;font-style:italic;font-size:24px;color:#f1f0e7}.hero-signature>span:last-child{font-size:10px;letter-spacing:.06em;color:#aebbac;margin-top:3px}.hero-stage{position:relative;margin:10px 16px 24px 0;padding:22px 0 0 24px}.portrait-frame{height:465px;position:relative;background:#9dada1;overflow:hidden;border-radius:180px 180px 0 0}.portrait-frame img{width:100%;height:100%;object-fit:cover;object-position:center 24%;filter:saturate(.62);transition:filter .6s,transform .9s}.portrait-frame:hover img{filter:saturate(1);transform:scale(1.025)}.hero-stage:before{content:'';position:absolute;inset:0 18px 20px 3px;border:1px solid #708367;border-radius:200px 200px 0 0;transform:rotate(-6deg)}.portrait-coordinate{position:absolute;right:-35px;top:30%;writing-mode:vertical-rl;font-size:8px;color:#aab9a4;z-index:1}.portrait-cross{position:absolute;font-size:24px;font-weight:300;color:#d4e6a7}.cross-one{top:50px;left:0}.cross-two{bottom:10px;right:-27px}.portrait-card{position:absolute;bottom:-20px;left:-20px;width:calc(100% - 26px);background:#f2efe5;color:#263027;padding:22px 26px;border:1px solid #d1d2c4;box-shadow:0 15px 40px #0002}.portrait-card .small-label{font-size:8px;color:#606953;letter-spacing:.12em}.portrait-card strong{display:block;font:500 21px/1.3 Manrope,Arial,sans-serif;margin-top:8px;letter-spacing:-.04em}.portrait-card a{position:absolute;right:20px;bottom:20px;width:44px;height:44px;border:1px solid #bfc5b6;border-radius:100%;display:grid;place-items:center;font-size:24px}.hero-bottom{padding:20px 0;border-top:1px solid #ffffff20;display:flex;justify-content:space-between;color:#b3bdac;font-size:9px}.hero-bottom a{display:flex;gap:20px}.hero-bottom a span{color:#d4e6a7}.discipline-strip{background:#dce8bb;color:#34402a;padding:23px 30px;display:flex;justify-content:center;align-items:center;gap:45px;font-size:12px;font-weight:600;letter-spacing:.02em}.discipline-strip b{font-size:22px;font-weight:400}
/* About */
.about-grid{display:grid;grid-template-columns:.8fr .85fr 1.8fr;gap:30px;align-items:start}.profile-card{background:var(--soft);padding:24px}.avatar{width:66px;height:66px;border-radius:100%;overflow:hidden;margin-bottom:20px}.avatar img{height:100%;width:100%;object-fit:cover}.profile-name{font-size:18px;font-weight:600;margin-bottom:6px}.profile-card .muted-sm{font-size:12px}.profile-card .tag-row{gap:5px}.profile-card .tag{font-size:9px;padding:4px 6px;border-color:var(--line)}.photo-tall{position:relative}.photo-tall img{width:100%;height:320px;object-fit:cover}.photo-tall figcaption{font-size:10px;text-transform:uppercase;letter-spacing:.12em;margin-top:8px;color:var(--muted)}.about-copy .big{font-size:21px;margin-bottom:20px}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;border-top:1px solid var(--line);margin-top:28px;padding-top:22px}.stat b{display:block;font:500 33px/1.3 Manrope,Arial,sans-serif;letter-spacing:-.05em}.stat span{font-size:10px;color:var(--muted);display:block;line-height:1.5;margin-top:5px}
/* Selected work */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 30px}.chip-btn,.tab-btn{border:1px solid var(--line);background:transparent;padding:9px 18px;font-size:12px;border-radius:30px;min-height:42px}.chip-btn.on,.chip-btn:hover,.tab-btn.on,.tab-btn:hover{background:var(--text);color:var(--bg);border-color:var(--text)}.proj-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 30px}.proj{min-width:0}.proj-media{height:310px;background:var(--soft);overflow:hidden;display:grid;place-items:center;border:1px solid var(--line)}.proj-media img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .7s}.proj:hover .proj-media img{transform:scale(1.025)}.proj-body{padding:24px 0 12px}.proj-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.proj-meta .mono-sm{font-size:9px;color:var(--muted)}.proj h3{font-size:26px;margin:0 0 12px}.proj .tag-row{margin-top:15px}.proj-open{margin-top:22px;border:0;border-bottom:1px solid var(--line);padding:10px 0;display:flex;justify-content:space-between;width:100%;text-align:left}.proj-open:after{content:'↗';font-size:20px}.proj-open:hover{background:transparent;color:var(--accent);border-color:var(--accent)}
/* Experience and toolkit */
.timeline{border-top:1px solid var(--line)}.tl-card{padding:28px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:50px}.tl-top{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline}.tl-top h3{width:100%;font-size:21px}.tl-top .grow{display:none}.tl-top .mono-sm{color:var(--muted);font-size:10px}.tl-card .muted{font-size:13px}.skills-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:60px}.orbit{display:flex;flex-wrap:wrap;gap:10px;align-content:start}.orbit-core{width:100%;margin-bottom:16px;font:500 28px/1.3 Manrope,Arial,sans-serif;letter-spacing:-.025em}.node{background:transparent;border:1px solid var(--line);padding:14px 19px;font-size:13px;border-radius:4px;transition:.2s}.node:hover,.node.on,.node:focus-visible{background:var(--text);border-color:var(--text);color:var(--bg)}.skill-readout{padding:32px;border-left:2px solid var(--accent);background:var(--soft);min-height:220px}.skill-name{font-size:28px;letter-spacing:-.04em;margin:15px 0}.mono-label{font-size:9px;color:var(--accent)}
/* Engineering concept studies */
.section-note{max-width:640px;font-size:13px;margin:-25px 0 30px}.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}.tab-content{display:none}.tab-content.on{display:block}.cad-grid,.building-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.cad-item,.building-item,.bim-item{border:1px solid var(--line);background:var(--surface);overflow:hidden}.cad-viewer,.bim-model{background:#171e1a}.cad-viewer canvas,.bim-model canvas{max-width:100%;width:100%;height:auto;border:0!important}.cad-info,.building-info,.bim-details{padding:24px;margin-top:0!important}.cad-info h3,.building-info h3,.bim-details h3{font-size:19px;margin-bottom:10px}.tech-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}.building-image{margin:0!important;height:240px;background:repeating-linear-gradient(90deg,transparent 0 39px,#adb99820 40px),repeating-linear-gradient(0deg,#202923 0 39px,#adb99820 40px)!important;border-radius:0!important}.building-image span{color:#c3ccba!important}.specs{font-size:12px;color:var(--muted)}.etabs-container,.bim-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.etabs-viewer{align-self:start;padding:20px;background:#1a1f25;color:#f3f2eb}.etabs-viewer canvas{max-width:100%;height:auto}.etabs-controls{flex-wrap:wrap}.etabs-info{margin-top:0!important;font-size:13px}.etabs-info h3{margin-bottom:14px}.etabs-info>div{color:#e7e9e4}.etabs-info h4{font-size:15px}.etabs-info ul{color:var(--muted)}
/* Services, credentials and research */
.svc-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);counter-reset:services}.svc{padding:30px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;transition:background .25s;counter-increment:services}.svc:after{content:'0' counter(services);position:absolute;right:24px;top:32px;font-size:10px;color:var(--muted)}.svc:hover{background:var(--soft)}.svc-icon{color:var(--accent);font-size:27px;margin-bottom:27px;height:40px}.svc-title{font-size:19px;line-height:1.35;letter-spacing:-.025em;margin-bottom:12px}.svc .sm{font-size:12px}.edu-row{display:grid;grid-template-columns:180px 1fr auto;gap:25px;align-items:center;padding:26px 0;border-bottom:1px solid var(--line)}.edu-row:first-child{border-top:1px solid var(--line)}.edu-degree{font-size:20px;letter-spacing:-.025em;margin-bottom:7px}.cert-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:32px}.cert{padding:28px;background:var(--soft);border:1px solid var(--line)}.cert-title{font-size:18px;margin:12px 0}.cert a{display:inline-block;margin-top:15px}.band{background:var(--soft)}.band .wrap{border-bottom:0}.res-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.res{background:var(--bg);border:1px solid var(--line)}.res-graphic{height:190px;background:repeating-linear-gradient(170deg,transparent 0 23px,#75826c55 24px,#75826c55 25px,transparent 26px 34px),#28342b;overflow:hidden}.res-graphic.alt{background:repeating-linear-gradient(20deg,transparent 0 30px,#ad7c5355 31px,#ad7c5355 32px,transparent 33px 40px),#42372c}.res-graphic img{width:100%;height:100%;object-fit:cover}.res-body{padding:28px}.res h3{font-size:24px;margin:12px 0}.res p{margin-top:15px}
/* Contact and footer */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px}.photo-wide{float:left;margin:5px 20px 15px 0;width:80px;height:88px;overflow:hidden;border-radius:40px 40px 0 0}.photo-wide img{height:100%;width:100%;object-fit:cover;object-position:top}.contact-grid .big{font-size:23px;margin-bottom:35px}.c-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:17px 0;border-bottom:1px solid var(--line);font-size:13px;clear:both}.c-row>span:last-child{overflow-wrap:anywhere}.c-row .mono-label{padding-top:3px}.social-row{display:flex;gap:8px;margin-top:25px}.contact-form{padding:35px;background:var(--surface);border:1px solid var(--line)}.contact-form h3{font-size:24px;margin-bottom:10px}.contact-form>p{margin-bottom:25px}.field{display:block;font-size:11px;font-weight:600;margin-bottom:18px}.input{display:block;background:var(--bg);border:1px solid var(--line);border-radius:0;color:var(--text);width:100%;padding:12px 14px;margin-top:8px;font-size:14px;font-weight:400}.input::placeholder{color:var(--muted);opacity:.9}textarea{resize:vertical;min-height:130px}.contact-form .btn-outline{background:var(--text);color:var(--bg);width:100%;justify-content:space-between;margin-top:5px}.contact-form .btn-outline:hover{background:var(--accent);color:var(--bg);border-color:var(--accent)}.note{padding:14px;margin:20px 0;border:1px solid var(--line)}.note.ok{color:#276344;background:#e6f3e5}.note.bad{color:#a42e22;background:#fbe9e6}.foot{background:var(--dark);color:#ced4c5}.foot-in{padding:32px 0;border:0;display:flex;gap:35px;justify-content:space-between;align-items:center;font-size:10px}.foot-in span{max-width:70%}.foot-in a{white-space:nowrap}
/* Accessible project detail overlay */
.modal{position:fixed;inset:0;z-index:100;background:#0a110ed9;display:grid;place-items:center;padding:25px;backdrop-filter:blur(6px)}.modal-card{background:var(--bg);padding:36px;max-width:760px;width:100%;max-height:90dvh;overflow:auto;border:1px solid var(--line);overscroll-behavior:contain}.modal-card h3{font-size:34px;margin:10px 0 20px}.pm-media img{width:100%;max-height:360px;object-fit:contain;background:var(--soft);margin-bottom:24px}.pm-actions{display:flex;flex-wrap:wrap;gap:22px;align-items:center;margin-top:25px}.pm-actions #pmClose{margin-left:auto}.reveal{opacity:1}.reveal.armed:not(.shown){opacity:0;transform:translateY(18px)}.reveal.shown{transition:opacity .6s,transform .6s;opacity:1;transform:translateY(0)}#progress-bar{position:fixed;left:0;top:0;height:2px;background:var(--accent);z-index:70;width:0}#back-top{position:fixed;right:22px;bottom:22px;border:1px solid var(--line);background:var(--surface);color:var(--text);width:44px;height:44px;border-radius:100%;opacity:0;visibility:hidden;transition:.2s;z-index:30}#back-top.visible{opacity:1;visibility:visible}
@media(min-width:1600px){.hero h1{font-size:76px}.hero-layout{gap:80px;padding-block:80px}.portrait-frame{height:500px}}
@media(max-width:1150px){.nav-links{gap:16px}.pillnav{gap:18px;width:calc(100% - 48px)}.brand{font-size:10px}.nav-cv{display:none}.hero{padding-inline:40px}.hero-layout{gap:36px}.hero h1{font-size:54px}.portrait-frame{height:435px}.about-grid{grid-template-columns:1fr 1.3fr 2fr;gap:20px}.wrap{width:calc(100% - 80px)}.svc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-grid{gap:40px}.discipline-strip{gap:25px;font-size:11px}.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:850px){.pillnav{height:76px}.nav-links{display:none}.burger{display:inline-flex}.nav-cv{display:inline-flex}.mobile-menu.open{display:grid;grid-template-columns:1fr 1fr;gap:4px 20px;padding:16px 24px 24px;border-top:1px solid var(--line);max-height:calc(100dvh - 76px);overflow:auto}.mobile-menu a{padding:11px 0;font-size:13px;border-bottom:1px solid var(--line)}.hero{padding-inline:32px}.hero h1{font-size:46px}.hero-layout{gap:30px}.hero-stage{padding-left:12px}.portrait-frame{height:395px}.portrait-card{left:-12px;width:calc(100% + 5px);padding:18px}.portrait-card strong{font-size:18px}.portrait-card a{width:32px;height:32px;right:13px;bottom:17px}.portrait-card .small-label{font-size:7px}.hero-signature{margin-top:28px}.lede{font-size:13px}.cta-row{gap:22px}.cta-row .lg{padding:15px 16px;font-size:11px}.wrap{width:calc(100% - 64px);padding:76px 0}.about-grid{grid-template-columns:1fr 1fr}.about-copy{grid-column:1/-1;margin-top:12px}.stat-grid{grid-template-columns:repeat(4,1fr)}.photo-tall img{height:310px}.profile-card{height:310px}.discipline-strip{gap:15px;padding:20px;font-size:10px}.proj-media{height:240px}.proj h3{font-size:23px}.skills-grid{gap:25px;grid-template-columns:1.25fr 1fr}.cad-grid,.building-grid{grid-template-columns:1fr 1fr}.edu-row{grid-template-columns:130px 1fr}.edu-row>span:last-child{grid-column:2}.contact-grid{gap:32px}.contact-form{padding:24px}.contact-grid .big{font-size:20px}.tl-card{gap:30px}.hero-bottom{font-size:8px}}
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@media(max-width:360px){.hero{padding-inline:20px}.hero h1{font-size:40px}.wrap{width:calc(100% - 40px)}.brand{font-size:9px}.hero-topline{font-size:6px}.about-grid{grid-template-columns:1fr}.photo-tall{display:none}.about-copy{grid-column:auto}.profile-card{min-height:0}.svc-grid{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.reveal.armed:not(.shown){opacity:1;transform:none}}
.study-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.study-card{border:1px solid var(--line);background:var(--surface)}.study-visual{position:relative;background:linear-gradient(#c9d8b010 1px,transparent 1px),linear-gradient(90deg,#c9d8b010 1px,transparent 1px),#222c25;background-size:32px 32px;color:#b9c9a5;height:290px;display:flex;justify-content:center;overflow:hidden}.study-visual svg{height:100%;width:auto;max-width:100%;transition:transform .6s}.study-card:hover svg{transform:translateY(-5px)}.study-code{position:absolute;left:20px;top:16px;font-size:8px;letter-spacing:.12em;color:#a2b298}.study-highlight{stroke:#dca17c;stroke-width:2}.study-tags{color:var(--accent);font-size:10px;letter-spacing:.08em;margin-top:20px;text-transform:uppercase}.study-card h3{font-size:22px}@media(max-width:600px){.study-grid{grid-template-columns:1fr;gap:20px}.study-visual{height:265px}}