:root{--navy:#102d4f;--blue:#173f70;--sky:#2d76c5;--ink:#162b43;--muted:#66788c;--line:#dce5ee;--bg:#f5f8fb;--white:#fff;--shadow:0 18px 50px rgba(16,45,79,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Vazirmatn,Tahoma,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.9}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 44px));margin:auto}.topbar{position:fixed;z-index:50;top:0;left:0;right:0;height:82px;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom:1px solid rgba(16,45,79,.08)}.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between}.brand img{width:190px;height:auto;display:block}.nav{display:flex;align-items:center;gap:8px}.nav a{padding:10px 22px;border-radius:8px;font-weight:600;color:#24364d}.nav a:hover,.nav a.active{background:var(--navy);color:#fff}.menu-btn{display:none;border:0;background:none;font-size:28px;color:var(--navy)}
.hero{min-height:640px;position:relative;margin-top:82px;display:flex;align-items:center;overflow:hidden;color:#fff}.hero-bg{position:absolute;inset:0;background:url('assets/hero.jpg') center/cover no-repeat;transform:scale(1.01)}.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,24,44,.86) 0%,rgba(9,35,61,.56) 45%,rgba(9,30,49,.12) 100%)}.hero-content{position:relative;z-index:1;padding:95px 0 115px}.hero-kicker{font-size:21px;border-top:3px solid #43a0ff;padding-top:12px;display:inline-block}.hero h1{font-size:58px;line-height:1.2;margin:14px 0 18px;font-weight:500;letter-spacing:-1px}.hero h1 strong{font-weight:800}.hero p{max-width:570px;font-size:19px;color:#eef5fc;margin:0 0 26px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:5px;padding:11px 24px;font-weight:700}.btn-light{border:1px solid #fff;color:#fff;background:rgba(0,0,0,.1)}.btn-light:hover{background:#fff;color:var(--navy)}.hero-caption{position:absolute;bottom:18px;right:5%;font-size:16px;color:#fff}.hero-caption:before{content:"";display:inline-block;width:55px;height:3px;background:#49a3ff;margin:0 12px 5px}
.stats{background:#f7fafc;border-bottom:1px solid var(--line)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}.stat{min-height:104px;display:flex;gap:18px;align-items:center;justify-content:center;border-left:1px solid var(--line)}.stat:last-child{border-left:0}.stat-icon{font-size:38px;color:var(--blue)}.stat b{display:block;font-size:20px}.stat small{color:var(--muted);font-size:13px}
.section{padding:86px 0}.about{background:#fff}.about-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:70px;align-items:center}.about-visual{min-height:350px;position:relative;overflow:hidden;background:linear-gradient(180deg,#fff,#f5f8fb);border-radius:14px}.about-visual:before{content:"";position:absolute;inset:45px -70px -60px 20px;background:url('assets/hero.jpg') center/cover;opacity:.17;filter:grayscale(1)}.blueprint{position:absolute;right:30px;top:45px;font-size:42px;line-height:1.35;color:#6f9ee1;font-style:italic;z-index:1}.line-art{position:absolute;left:0;right:0;bottom:0;height:80px;border-top:2px solid #cfdbea;transform:skewY(-3deg)}.eyebrow{display:inline-block;color:#3e83cc;font-weight:800;margin-bottom:7px}.section-head h2,.about-copy h2,.contact-info h2{font-size:36px;margin:0 0 18px;color:var(--navy);letter-spacing:-.5px}.section-head p,.about-copy p{color:#5e7083;font-size:16px}.about-facts{display:flex;gap:0;margin-top:32px;border-top:1px solid var(--line);padding-top:22px}.about-facts div{flex:1;border-left:1px solid var(--line);padding:0 18px}.about-facts div:last-child{border-left:0}.about-facts strong{display:block;font-size:25px;color:var(--navy)}.about-facts span{font-size:13px;color:var(--muted)}.rank-box{margin-top:60px;background:#f7fafc;border:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);border-radius:10px;overflow:hidden}.rank-box div{padding:24px;border-left:1px solid var(--line)}.rank-box div:last-child{border-left:0}.rank-box b{display:block;font-size:18px;color:var(--navy)}.rank-box span{color:var(--muted);font-size:14px}
.projects{background:#f5f8fb}.centered{text-align:center;max-width:800px;margin:0 auto 42px}.project-filters{display:flex;gap:10px;background:var(--navy);padding:10px;border-radius:9px;margin-bottom:34px;overflow:auto}.filter{border:0;background:#173f70;color:#fff;padding:12px 24px;border-radius:6px;font-family:inherit;font-weight:600;cursor:pointer;white-space:nowrap}.filter.active,.filter:hover{background:#fff;color:var(--navy)}.project-list{display:grid;gap:28px}.project-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:grid;grid-template-columns:1.05fr .95fr;box-shadow:0 8px 30px rgba(16,45,79,.06)}.project-card:nth-child(even){grid-template-columns:.95fr 1.05fr}.project-card:nth-child(even) .project-gallery{order:2}.project-card:nth-child(even) .project-body{order:1}.project-gallery{padding:20px;background:#eef3f8;display:flex;flex-direction:column;gap:12px}.main-photo{width:100%;height:330px;object-fit:cover;border-radius:8px;display:block;background:#ddd}.thumbs{display:flex;gap:8px;overflow:auto}.thumbs img{width:78px;height:58px;object-fit:cover;border-radius:5px;border:2px solid transparent;cursor:pointer}.thumbs img:hover{border-color:var(--sky)}.project-body{padding:36px 38px}.project-number{color:#3f83cc;font-weight:800;font-size:15px}.project-body h3{font-size:25px;line-height:1.55;margin:5px 0 15px;color:var(--navy)}.meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.meta span{font-size:12px;color:#49627c;background:#f0f5f9;border-radius:20px;padding:5px 10px}.project-body p{color:#586b7e;margin:0 0 14px;font-size:15px}.project-body ul{margin:0;padding-right:20px;color:#52677b;font-size:14px}.project-body li{margin:5px 0}
.certificates{background:#fff}.cert-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.cert{padding:0;border:1px solid var(--line);background:#fff;border-radius:8px;overflow:hidden;cursor:pointer}.cert img{display:block;width:100%;height:230px;object-fit:cover;object-position:top}.contact{background:var(--navy);color:#fff;padding:75px 0}.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px}.contact-info h2{color:#fff}.contact-item{border-top:1px solid rgba(255,255,255,.14);padding:13px 0}.contact-item b{display:block;color:#9fc8f2}.contact-item p{margin:2px 0;color:#eef5fb}.contact-item a{color:#fff}.map-box{position:relative;min-height:440px;border-radius:12px;overflow:hidden;background:#dce5ee}.map-box iframe{border:0;width:100%;height:440px;display:block;filter:saturate(.9)}.map-link{position:absolute;left:20px;bottom:20px;background:#fff;color:var(--navy);padding:10px 16px;border-radius:6px;font-weight:700;box-shadow:0 6px 20px rgba(0,0,0,.15)}.footer{background:#0b223c;color:#b9c8d8;padding:20px 0}.footer-wrap{display:flex;align-items:center;justify-content:space-between;font-size:13px}.footer a{border:1px solid #66809c;border-radius:50%;width:36px;height:36px;display:grid;place-items:center}
.lightbox{position:fixed;inset:0;background:rgba(3,14,25,.9);z-index:100;display:none;align-items:center;justify-content:center;padding:30px}.lightbox.open{display:flex}.lightbox img{max-width:92vw;max-height:88vh;object-fit:contain;border-radius:8px}.lightbox-close{position:absolute;top:18px;left:25px;background:#fff;color:#102d4f;border:0;width:42px;height:42px;border-radius:50%;font-size:28px;cursor:pointer}
@media(max-width:900px){.nav{display:none;position:absolute;top:82px;right:22px;left:22px;background:#fff;padding:10px;box-shadow:var(--shadow);border-radius:10px;flex-direction:column}.nav.open{display:flex}.nav a{width:100%;text-align:center}.menu-btn{display:block}.hero h1{font-size:42px}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-left:0}.about-grid,.contact-wrap{grid-template-columns:1fr}.project-card,.project-card:nth-child(even){grid-template-columns:1fr}.project-card:nth-child(even) .project-gallery,.project-card:nth-child(even) .project-body{order:initial}.cert-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.container{width:min(100% - 28px,1180px)}.topbar{height:72px}.brand img{width:145px}.hero{margin-top:72px;min-height:620px}.hero-content{padding:90px 0 80px}.hero h1{font-size:34px}.hero p{font-size:16px}.stats-grid{grid-template-columns:1fr}.stat{border-left:0;border-bottom:1px solid var(--line)}.section{padding:62px 0}.section-head h2,.about-copy h2,.contact-info h2{font-size:29px}.about-facts{flex-direction:column;gap:14px}.about-facts div{border-left:0;border-bottom:1px solid var(--line);padding:10px 0}.rank-box{grid-template-columns:1fr}.rank-box div{border-left:0;border-bottom:1px solid var(--line)}.project-body{padding:25px}.project-body h3{font-size:21px}.main-photo{height:240px}.cert-grid{grid-template-columns:1fr}.footer-wrap{gap:15px;flex-wrap:wrap}}
/* Language switch */
.lang-switch{position:absolute;left:22px;top:50%;transform:translateY(-50%);border:1px solid #c9d8e8;background:#fff;color:var(--navy);font:700 13px Arial,sans-serif;letter-spacing:.5px;border-radius:6px;padding:8px 12px;cursor:pointer;z-index:60}.lang-switch:hover{background:var(--navy);color:#fff}
body.english{font-family:Inter,Arial,Helvetica,sans-serif;direction:ltr}.english .nav{direction:ltr}.english .hero-overlay{background:linear-gradient(90deg,rgba(6,24,44,.86) 0%,rgba(9,35,61,.56) 45%,rgba(9,30,49,.12) 100%)}.english .hero-caption{right:auto;left:5%}.english .hero-caption:before{margin:0 12px 5px 0}.english .stats-grid,.english .about-grid,.english .project-card,.english .rank-box,.english .contact-wrap{direction:ltr}.english .stat{border-left:1px solid var(--line);border-right:0}.english .stat:last-child{border-left:0}.english .about-facts div{border-left:1px solid var(--line);border-right:0}.english .about-facts div:last-child{border-left:0}.english .rank-box div{border-left:1px solid var(--line);border-right:0}.english .rank-box div:last-child{border-left:0}.english .project-body ul{padding-right:0;padding-left:20px}.english .project-card:nth-child(even) .project-gallery{order:1}.english .project-card:nth-child(even) .project-body{order:2}.english .project-card:nth-child(even){grid-template-columns:1.05fr .95fr}.english .map-link{left:20px;right:auto}.english .footer-wrap{direction:ltr}.english .lightbox-close{left:auto;right:25px}
@media(max-width:900px){.lang-switch{left:70px}.english .project-card:nth-child(even) .project-gallery,.english .project-card:nth-child(even) .project-body{order:initial}.english .stat:nth-child(2){border-left:0}}
@media(max-width:560px){.lang-switch{left:58px;top:36px}.english .about-facts div{border-left:0}.english .rank-box div{border-left:0}.english .stat{border-left:0}.english .footer-wrap{direction:ltr}}