:root{
  --blue:#1557d6;
  --blue-dark:#0f3fa8;
  --ink:#101a31;
  --muted:#68738a;
  --line:#e8ecf3;
  --soft:#f7f9fc;
  --white:#fff;
  --shadow:0 12px 35px rgba(17,36,75,.07);
  --radius:16px;
  --container:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);background:#fff;line-height:1.55;
}
a{text-decoration:none;color:inherit}
button{font:inherit}
.site-shell{width:min(var(--container),calc(100% - 22px));margin:auto}
.site-header{
  min-height:78px;display:flex;align-items:center;gap:28px;
  border-bottom:1px solid transparent;position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:12px;min-width:225px}
.brand-mark{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:var(--blue);font-size:20px;font-weight:850;letter-spacing:-1px;background:#edf3ff
}
.brand-copy{display:grid;line-height:1.15}.brand-copy strong{font-size:14px}.brand-copy small{font-size:10px;color:var(--muted);margin-top:5px}
.main-nav{display:flex;align-items:center;justify-content:center;gap:27px;flex:1}
.main-nav a{font-size:13px;font-weight:700;color:#30394d;position:relative;padding:29px 0 24px}
.main-nav a:hover,.main-nav a.active{color:var(--blue)}
.main-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--blue);border-radius:4px}
.header-cta,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:42px;padding:0 18px;border-radius:8px;font-size:12px;font-weight:800;
  transition:.2s ease
}
.header-cta{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(21,87,214,.2)}
.header-cta:hover,.btn-primary:hover{background:var(--blue-dark);transform:translateY(-1px)}
.section{padding:32px 0;scroll-margin-top:78px}
.hero{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;padding-top:22px}
.eyebrow,.section-kicker{color:var(--blue);font-size:11px;font-weight:850;letter-spacing:.05em;text-transform:uppercase}
.hero h1{font-size:clamp(38px,4.2vw,57px);line-height:1.04;letter-spacing:-2.4px;margin:14px 0 17px;max-width:620px}
.hero h1 .accent{color:var(--blue)}
.hero p{color:#5d687b;font-size:15px;line-height:1.75;max-width:550px;margin:0}
.hero-actions{display:flex;gap:12px;margin-top:24px}
.btn-primary{background:var(--blue);color:#fff}
.btn-secondary{border:1px solid #b9c6dd;color:var(--blue);background:#fff}
.btn-secondary:hover{border-color:var(--blue);background:#f7faff}
.hero-points{display:flex;flex-wrap:wrap;gap:18px 25px;margin-top:27px}
.hero-point{display:flex;align-items:center;gap:7px;font-size:11px;color:#556074;font-weight:700}
.icon{width:18px;height:18px;display:inline-grid;place-items:center;flex:0 0 auto;color:currentColor}
.icon svg{width:100%;height:100%;display:block;stroke:currentColor}
.icon-sm{width:14px;height:14px}.icon-lg{width:24px;height:24px}.icon-xl{width:42px;height:42px}
.hero-visual{display:flex;justify-content:flex-end}
.photo-placeholder{
  width:min(100%,330px);aspect-ratio:4/5;border:1px solid #dce3ef;border-radius:14px;
  background:linear-gradient(145deg,#f4f7fb,#fff);box-shadow:var(--shadow);
  display:flex;flex-direction:column;align-items:center;justify-content:center;color:#7a8598;
}
.photo-placeholder .placeholder-icon{color:#9aa6b9;margin-bottom:10px}
.photo-placeholder strong{font-size:14px;letter-spacing:.08em}.photo-placeholder span{font-size:12px;margin-top:4px}.photo-placeholder small{font-size:10px;margin-top:0;color:#9aa2b0}
.section-heading{margin-bottom:16px}.section-heading.center{text-align:center}.section-heading h2,.about-card h2{font-size:25px;letter-spacing:-.7px;margin:7px 0 7px}.section-heading p{color:var(--muted);font-size:13px;margin:0}
.library-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.library-card,.service-card,.project-card,.tech-card,.stat-card{
  border:1px solid var(--line);background:#fff;border-radius:var(--radius);transition:.2s ease
}
.library-card{padding:21px 16px;text-align:center;min-height:202px;display:flex;flex-direction:column;align-items:center}
.library-card:hover,.service-card:hover,.project-card:hover,.tech-card:hover,.stat-card:hover{border-color:#cbd7ee;box-shadow:var(--shadow);transform:translateY(-2px)}
.library-icon{width:38px;height:38px;color:var(--blue);margin-bottom:11px}
.library-card h3{font-size:13px;line-height:1.35;margin:0 0 8px}.library-card p{font-size:11px;color:var(--muted);line-height:1.55;margin:0 0 13px}.library-card a{font-size:11px;font-weight:800;color:var(--blue);margin-top:auto}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.service-card{padding:22px}.service-card .icon{width:28px;height:28px;color:var(--blue);margin-bottom:14px}.service-card h3,.project-card h3{font-size:15px;margin:0 0 6px}.service-card p,.project-card p{font-size:12px;color:var(--muted);margin:0}
.tech-section{background:#fbfcfe;border-top:1px solid #f0f3f7;border-bottom:1px solid #f0f3f7}
.tech-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:13px}
.tech-card{padding:10px;grid-column:span 5}.tech-card.wide{grid-column:span 7}
.tech-card h3{text-align:center;font-size:12px;margin:0 0 14px}.tech-items{display:flex;flex-wrap:wrap;justify-content:center;gap:15px 20px}
.tech-item{width:66px;display:flex;flex-direction:column;align-items:center;gap:7px;text-align:center}
.tech-icon{width:30px;height:30px;display:grid;place-items:center;color:#5c6a82}
.tech-icon img{width:30px;height:30px;object-fit:contain}.tech-fallback{width:30px;height:30px}
.tech-item span{font-size:9px;color:#566175;line-height:1.2}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.project-card{padding:22px;min-height:130px}.project-card a{display:inline-flex;margin-top:16px;font-size:11px;font-weight:800;color:var(--blue);align-items:center;gap:6px}
.about-card{border:1px solid #dce5f4;border-radius:20px;padding:30px 34px;display:flex;justify-content:space-between;gap:30px;align-items:center;background:linear-gradient(110deg,#f8fbff,#fff)}
.about-card p{color:var(--muted);font-size:13px;max-width:720px;margin:8px 0 0}
.stats-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding-top:0}.stat-card{padding:15px 12px;display:flex;align-items:center;gap:10px}.stat-card .icon{color:var(--blue);width:25px;height:25px}.stat-value{font-size:17px;font-weight:850;line-height:1.05}.stat-label{font-size:9px;color:var(--muted);margin-top:3px}
.footer{border-top:1px solid var(--line);padding-top:22px;margin-top:0}.footer-grid{display:grid;grid-template-columns:1.25fr .75fr 1.3fr 1fr;gap:34px;padding-bottom:30px}.footer-brand{min-width:0}.footer-intro p{font-size:11px;color:var(--muted);max-width:260px;margin:13px 0 0}.footer h3{font-size:12px;margin:2px 0 12px}.footer-links{display:grid;gap:7px}.footer-links a,.contact-column a,.contact-column div{display:flex;align-items:center;gap:8px;font-size:11px;color:#667084}.footer-links a:hover,.contact-column a:hover{color:var(--blue)}.contact-column{display:grid;align-content:start;gap:10px}.footer-bottom{border-top:1px solid var(--line);min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#778094;font-size:10px}.social-links{display:flex;gap:14px}.social-links a{color:#526077}.social-links a:hover{color:var(--blue)}
.menu-toggle{display:none;border:0;background:transparent;padding:8px}.menu-toggle span{display:block;width:22px;height:2px;background:#243047;margin:4px;border-radius:3px}

@media(max-width:1050px){
  .main-nav{gap:17px}.main-nav a{font-size:12px}.header-cta{padding:0 13px}
  .library-grid{grid-template-columns:repeat(3,1fr)}
  .tech-card{grid-column:span 6}.tech-card.wide{grid-column:span 6}
  .stats-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:760px){
  .site-shell{width:min(100% - 24px,600px)}
  .site-header{min-height:68px}.brand{min-width:0}.brand-mark{width:38px;height:38px;font-size:18px}.brand-copy strong{font-size:13px}
  .menu-toggle{display:block;margin-left:auto}.header-cta{display:none}
  .main-nav{
    position:absolute;top:67px;left:0;right:0;background:#fff;border:1px solid var(--line);
    border-radius:12px;padding:8px;display:none;flex-direction:column;gap:0;box-shadow:var(--shadow)
  }
  .main-nav.open{display:flex}.main-nav a{width:100%;padding:11px 12px;border-radius:8px}.main-nav a:hover{background:#f5f8fd}.main-nav a.active:after{display:none}
  .section{padding:24px 0;scroll-margin-top:70px}.hero{grid-template-columns:1fr;gap:18px;padding-top:18px}.hero h1{font-size:39px;letter-spacing:-1.7px}.hero p{font-size:13px}.hero-visual{justify-content:stretch}.photo-placeholder{width:100%;aspect-ratio:1.55/1}
  .hero-points{gap:11px 18px}.hero-point{font-size:10px}
  .library-grid{grid-template-columns:repeat(2,1fr);gap:10px}.library-card{min-height:170px;padding:18px 12px}
  .service-grid,.project-grid{grid-template-columns:1fr}.tech-grid{grid-template-columns:1fr}.tech-card,.tech-card.wide{grid-column:span 1}
  .tech-items{gap:14px 17px}.about-card{padding:24px;display:block}.about-card .btn{margin-top:18px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:9px}.stat-card{padding:13px 10px}.stat-value{font-size:15px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}.footer-intro{grid-column:1/-1}.footer-bottom{align-items:flex-start;padding:18px 0;flex-direction:column}
}
@media(max-width:420px){
  .library-grid{grid-template-columns:1fr}.hero h1{font-size:34px}.hero-actions{flex-direction:column}.btn{width:100%}.footer-grid{grid-template-columns:1fr}.contact-column{grid-column:auto}
}


/* Compact layout refinements */
.hero-visual{align-items:center}
.photo-placeholder{
  width:300px;
  max-width:100%;
  aspect-ratio:4/5;
}
.library-card{min-height:178px;padding:17px 14px}
.service-card{padding:18px}
.project-card{padding:18px;min-height:115px}
.tech-card{padding:14px}
.tech-items{gap:12px 16px}
.about-card{padding:24px 28px}
.footer{padding-top:26px}
.footer-grid{padding-bottom:22px}
.stats-grid{padding-bottom:20px}

@media(max-width:760px){
  .section{padding:24px 0;scroll-margin-top:70px}
  .hero{gap:18px;padding-top:18px}
  .hero-visual{justify-content:center}
  .photo-placeholder{width:210px;aspect-ratio:4/5}
  .library-card{min-height:165px;padding:16px 12px}
  .service-card{padding:17px}
  .project-card{padding:17px;min-height:110px}
  .tech-card{padding:13px}
  .about-card{padding:20px}
  .stats-grid{padding-bottom:14px}
  .footer{padding-top:24px}
  .footer-grid{padding-bottom:18px}
}

@media(max-width:420px){
  .photo-placeholder{width:190px}
  .section{padding:20px 0}
  .hero{padding-top:14px}
  .section-heading{margin-bottom:13px}
}

.photo-placeholder {
  width: 250px;
  max-width: 100%;
  aspect-ratio: 4 / 5;

  background-image: url("assets/icons/sounit_bhowmik_plassey_23_january.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;

  overflow: hidden;
  border-radius: 14px;
  border: 1px solid #dce3ef;
  box-shadow: var(--shadow);
}
.photo-placeholder .placeholder-icon,
.photo-placeholder strong,
.photo-placeholder span,
.photo-placeholder small {
  display: none;
}