/* ============================================================
   ReD-X CacTus — Design Tokens
   ============================================================ */
:root{
  --red-900:#4A0713;
  --red-800:#6B0B1D;
  --red-700:#8A0F24;
  --red-600:#A8102E;
  --red-500:#C41E3A;
  --red-400:#D63A52;
  --gold-500:#B08D57;
  --gold-300:#D8C29A;

  --ink-900:#1C1B1F;
  --ink-700:#3A373E;
  --ink-500:#5B5760;
  --ink-300:#8B8790;
  --ink-100:#D8D5DA;

  --paper-0:#FFFFFF;
  --paper-50:#FBF9F8;
  --paper-100:#F7F5F4;
  --paper-200:#F0ECEA;

  --line:#E7E1DF;

  --font-display:'Fraunces','Noto Serif Bengali',serif;
  --font-body:'Inter','Hind Siliguri',sans-serif;

  --shadow-sm:0 1px 2px rgba(74,7,19,.06), 0 1px 1px rgba(0,0,0,.04);
  --shadow-md:0 8px 24px -8px rgba(74,7,19,.16), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg:0 24px 48px -16px rgba(74,7,19,.22), 0 4px 12px rgba(0,0,0,.05);

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:76px;
  --container:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important;}
}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink-900);
  background:var(--paper-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;color:var(--ink-900);font-weight:600;}
p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--red-600);outline-offset:3px;border-radius:4px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
@media (max-width:768px){.section{padding:64px 0;}}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--red-600);
  font-family:var(--font-body);
}
.eyebrow::before{content:"";width:16px;height:1.5px;background:var(--red-600);display:inline-block;}

.section-head{max-width:640px;margin-bottom:48px;}
.section-head h2{font-size:clamp(28px,3.4vw,40px);line-height:1.18;letter-spacing:-.01em;margin-top:10px;}
.section-head p{color:var(--ink-500);font-size:16px;margin-top:14px;line-height:1.7;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

.bn{font-family:var(--font-body);}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:10px;font-weight:600;font-size:14.5px;
  border:1px solid transparent;transition:transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--red-600),var(--red-700));
  color:#fff; box-shadow:var(--shadow-sm);
}
.btn-primary::before{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-20deg);transition:left .7s var(--ease);pointer-events:none;
}
.btn-primary:hover::before{left:130%;}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 14px 28px -10px rgba(107,11,29,.45);}
.btn-outline{
  background:transparent;color:var(--ink-900);border-color:var(--ink-900);
}
.btn-outline:hover{background:var(--ink-900);color:#fff;transform:translateY(-2px);}
.btn-ghost-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px);}
.btn-ghost-light:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:8px;}
.btn .ripple{
  position:absolute;border-radius:50%;transform:scale(0);
  background:rgba(255,255,255,.5);pointer-events:none;
  animation:rippleFx .6s ease-out;
}
@keyframes rippleFx{to{transform:scale(3);opacity:0;}}

/* ============================================================
   Header
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(74,7,19,.08);
  transition:background .3s var(--ease), box-shadow .3s var(--ease), height .3s var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  box-shadow:0 4px 24px -6px rgba(74,7,19,.14);
}
.header-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--red-600),var(--red-800));
  box-shadow:var(--shadow-sm);object-fit:cover;overflow:hidden;
}
.brand-mark img{width:100%;height:100%;object-fit:cover;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-family:var(--font-display);font-size:17.5px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.brand-text span{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--red-600);font-weight:700;margin-top:3px;}

.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;padding:9px 15px;font-size:14px;font-weight:500;color:var(--ink-700);
  border-radius:8px;transition:color .25s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:5px;height:2px;
  background:var(--red-600);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
  border-radius:2px;
}
.main-nav a:hover{color:var(--red-700);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--red-700);font-weight:600;}

.header-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.dev-badge{
  display:flex;align-items:center;gap:8px;
  padding:6px 14px 6px 6px;border-radius:999px;
  background:linear-gradient(180deg,var(--paper-0),var(--paper-100));
  border:1px solid var(--line);
  font-size:12px;font-weight:700;color:var(--ink-700);
  letter-spacing:.01em;position:relative;box-shadow:var(--shadow-sm);
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.dev-badge:hover{border-color:rgba(168,16,46,.35);box-shadow:var(--shadow-md);}
.dev-badge .dot{width:6px;height:6px;border-radius:50%;background:#2FB86B;box-shadow:0 0 0 3px rgba(47,184,107,.18);flex-shrink:0;position:absolute;top:1px;right:1px;z-index:2;animation:pulseDot 2.2s ease-in-out infinite;}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 3px rgba(47,184,107,.18);}50%{box-shadow:0 0 0 5px rgba(47,184,107,.28);}}
.dev-badge .dev-ava{
  width:24px;height:24px;border-radius:50%;overflow:hidden;position:relative;flex-shrink:0;
  background:linear-gradient(135deg,var(--red-500),var(--red-800));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-weight:800;
  border:1.5px solid #fff;box-shadow:0 0 0 1px rgba(168,16,46,.3);
}
.dev-badge .dev-ava img{width:100%;height:100%;object-fit:cover;}
.dev-badge .dev-txt{display:flex;flex-direction:column;line-height:1.15;}
.dev-badge .dev-txt small{font-size:8.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-300);}
.dev-badge .dev-txt strong{font-size:12px;font-weight:800;color:var(--ink-900);letter-spacing:.01em;}
.tg-btn{
  display:flex;align-items:center;gap:7px;padding:8px 14px;border-radius:9px;
  background:var(--paper-100);border:1px solid var(--line);color:var(--ink-900);
  font-size:13px;font-weight:600;transition:all .25s var(--ease);
}
.tg-btn i{color:#229ED9;font-size:15px;}
.tg-btn:hover{border-color:var(--red-500);background:var(--paper-0);box-shadow:var(--shadow-sm);}

.hamburger{
  display:none;width:38px;height:38px;border-radius:9px;border:1px solid var(--line);
  background:var(--paper-0);align-items:center;justify-content:center;flex-shrink:0;
}
.hamburger span{display:block;width:16px;height:1.6px;background:var(--ink-900);position:relative;transition:.3s var(--ease);}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink-900);transition:.3s var(--ease);}
.hamburger span::before{top:-5px;}
.hamburger span::after{top:5px;}
.hamburger.active span{background:transparent;}
.hamburger.active span::before{transform:translateY(5px) rotate(45deg);}
.hamburger.active span::after{transform:translateY(-5px) rotate(-45deg);}

.mobile-nav{
  position:fixed;top:var(--header-h);left:0;right:0;bottom:0;z-index:999;
  background:rgba(255,255,255,.98);backdrop-filter:blur(10px);
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:all .3s var(--ease);
  overflow-y:auto;
}
.mobile-nav.open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-nav-inner{padding:20px 24px 40px;display:flex;flex-direction:column;gap:2px;}
.mobile-nav a{
  padding:15px 6px;font-size:16.5px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;
}
.mobile-nav a i{color:var(--ink-300);font-size:13px;}
.mobile-nav .mobile-actions{margin-top:20px;display:flex;flex-direction:column;gap:10px;}

/* Progress bar */
.scroll-progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--red-500),var(--gold-500));z-index:1100;width:0%;transition:width .1s linear;}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;padding:calc(var(--header-h) + 56px) 0 72px;
  background:
    radial-gradient(1100px 520px at 82% -10%, rgba(196,30,58,.14), transparent 60%),
    linear-gradient(180deg,var(--paper-0) 0%, var(--paper-50) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(74,7,19,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(74,7,19,.035) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(650px 400px at 78% 15%, black, transparent);
}
.hero-grid{
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;position:relative;z-index:1;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:7px 14px 7px 8px;border-radius:999px;
  background:var(--paper-0);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--red-700);margin-bottom:22px;
}
.hero-eyebrow .seal-mini{width:20px;height:20px;flex-shrink:0;}
.hero h1{
  font-size:clamp(34px,4.6vw,58px);line-height:1.08;letter-spacing:-.02em;color:var(--ink-900);
}
.hero h1 em{
  font-style:normal;color:var(--red-600);
  background:linear-gradient(120deg,var(--red-600),var(--red-500));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero .lede{margin-top:20px;font-size:16.5px;color:var(--ink-500);max-width:520px;line-height:1.75;}
.hero .lede-bn{margin-top:8px;font-size:15px;color:var(--ink-300);max-width:520px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-meta{display:flex;gap:28px;margin-top:44px;flex-wrap:wrap;}
.hero-meta .m-item strong{display:block;font-family:var(--font-display);font-size:26px;color:var(--ink-900);font-weight:700;}
.hero-meta .m-item span{font-size:12.5px;color:var(--ink-500);}

/* Hero right — ledger panel (signature element) */
.ledger{
  position:relative;background:linear-gradient(160deg,var(--red-800),var(--red-900) 70%);
  border-radius:var(--radius-lg);padding:34px 30px;color:#fff;box-shadow:var(--shadow-lg);
  isolation:isolate;overflow:hidden;
}
.ledger::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 1px 1px, rgba(255,255,255,.09) 1px, transparent 1px);
  background-size:18px 18px;z-index:-1;
}
.ledger::after{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.09), transparent 65%);
  top:-120px;right:-100px;z-index:-1;
}
.ledger-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.16);}
.ledger-top span{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.65);font-weight:700;}
.seal{width:44px;height:44px;flex-shrink:0;}
.ledger-quote{font-family:var(--font-display);font-size:19px;line-height:1.55;margin:24px 0;font-weight:500;}
.ledger-rows{display:flex;flex-direction:column;gap:14px;margin-top:8px;}
.l-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-top:1px dashed rgba(255,255,255,.18);}
.l-row:first-child{border-top:none;}
.l-row .l-label{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.88);}
.l-row .l-label i{width:16px;color:var(--gold-300);font-size:13px;}
.l-row .l-val{font-family:var(--font-display);font-weight:700;font-size:15px;color:#fff;}
.ledger-foot{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16);display:flex;align-items:center;gap:10px;font-size:12px;color:rgba(255,255,255,.65);}
.ledger-foot .avail-dot{width:8px;height:8px;border-radius:50%;background:#3ED685;box-shadow:0 0 0 4px rgba(62,214,133,.22);}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .ledger{max-width:460px;}
}

/* ============================================================
   Trust strip
   ============================================================ */
.trust-strip{padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-50);}
.trust-strip .container{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.trust-label{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-300);flex-shrink:0;}
.trust-items{display:flex;gap:38px;flex-wrap:wrap;}
.trust-items span{font-family:var(--font-display);font-weight:600;font-size:16px;color:var(--ink-500);letter-spacing:.01em;opacity:.75;}

/* ============================================================
   About
   ============================================================ */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center;}
.about-visual{position:relative;}
.about-card{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-md);position:relative;
}
.about-avatar-row{display:flex;align-items:center;gap:14px;margin-bottom:22px;}
.about-avatar{width:56px;height:56px;border-radius:14px;overflow:hidden;background:linear-gradient(145deg,var(--red-600),var(--red-800));flex-shrink:0;box-shadow:var(--shadow-sm);}
.about-avatar img{width:100%;height:100%;object-fit:cover;}
.about-avatar-row strong{display:block;font-family:var(--font-display);font-size:16px;}
.about-avatar-row span{font-size:12.5px;color:var(--ink-500);}
.about-bars{display:flex;flex-direction:column;gap:16px;}
.bar-row{}
.bar-row .bar-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:7px;}
.bar-row .bar-head span:first-child{color:var(--ink-700);font-weight:600;}
.bar-row .bar-head span:last-child{color:var(--red-600);font-weight:700;}
.bar-track{height:6px;border-radius:99px;background:var(--paper-200);overflow:hidden;}
.bar-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--red-600),var(--red-400));width:0%;transition:width 1.4s var(--ease);}
.about-content p{color:var(--ink-500);font-size:16px;line-height:1.8;margin-bottom:16px;}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px;}
.about-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink-700);font-weight:500;}
.about-list li i{color:var(--red-600);margin-top:3px;font-size:13px;flex-shrink:0;}

@media (max-width:900px){.about-grid{grid-template-columns:1fr;}.about-list{grid-template-columns:1fr;}}

/* ============================================================
   Founder / Leadership
   ============================================================ */
.founder-section{background:var(--paper-100);}
.founder-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:center;}
.founder-portrait{position:relative;}
.founder-frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(160deg,var(--red-800),var(--red-900));
  padding:10px;box-shadow:var(--shadow-lg);
}
.founder-frame-inner{
  border-radius:calc(var(--radius-lg) - 6px);overflow:hidden;aspect-ratio:4/5;
  background:linear-gradient(160deg,var(--red-700),var(--red-900));
  display:flex;align-items:center;justify-content:center;position:relative;
}
.founder-frame-inner img{width:100%;height:100%;object-fit:cover;}
.founder-frame-inner .ph-fallback{
  font-family:var(--font-display);font-weight:700;font-size:64px;color:rgba(255,255,255,.85);
}
.founder-frame-inner::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 1px 1px, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size:20px 20px;pointer-events:none;
}
.founder-badge-tag{
  position:absolute;bottom:-16px;left:24px;background:var(--paper-0);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:12px 18px;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:10px;
}
.founder-badge-tag i{color:var(--red-600);font-size:15px;}
.founder-badge-tag strong{display:block;font-size:12.5px;color:var(--ink-900);font-weight:700;}
.founder-badge-tag span{font-size:11px;color:var(--ink-500);}

.founder-content .eyebrow{margin-bottom:4px;}
.founder-greeting{
  font-family:var(--font-display);font-weight:600;font-size:clamp(26px,3vw,34px);
  color:var(--ink-900);line-height:1.25;letter-spacing:-.01em;margin-top:12px;
}
.founder-greeting .accent{
  color:var(--red-600);
  background:linear-gradient(120deg,var(--red-600),var(--red-500));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.founder-role{margin-top:14px;font-size:15px;font-weight:600;color:var(--ink-700);}
.founder-role .bn{color:var(--ink-500);font-weight:500;}
.founder-bio{margin-top:16px;font-size:15.5px;color:var(--ink-500);line-height:1.8;max-width:560px;}

.founder-companies{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.co-chip{
  display:flex;align-items:center;gap:9px;padding:10px 16px;border-radius:999px;
  background:var(--paper-0);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-800);
  box-shadow:var(--shadow-sm);transition:all .3s var(--ease);
}
.co-chip:hover{border-color:var(--red-500);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.co-chip .co-dot{width:7px;height:7px;border-radius:50%;background:var(--red-600);flex-shrink:0;}

.founder-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}

@media (max-width:900px){
  .founder-grid{grid-template-columns:1fr;gap:64px;}
  .founder-portrait{max-width:340px;margin:0 auto;}
}

.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.s-card{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 24px;transition:transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  position:relative;overflow:hidden;
}
.s-card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .4s var(--ease);
  background:linear-gradient(160deg, rgba(196,30,58,.05), transparent 60%);
}
.s-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(168,16,46,.25);}
.s-card:hover::before{opacity:1;}
.s-card::after{
  content:"";position:absolute;top:0;left:-75%;width:45%;height:100%;z-index:0;
  background:linear-gradient(115deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg);transition:left .8s var(--ease);pointer-events:none;
}
.s-card:hover::after{left:130%;}
.s-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--paper-100),var(--paper-200));color:var(--red-600);font-size:18px;
  margin-bottom:16px;transition:transform .4s var(--ease), background .4s var(--ease), color .4s var(--ease);
  position:relative;z-index:1;
}
.s-card:hover .s-icon{background:linear-gradient(145deg,var(--red-600),var(--red-800));color:#fff;transform:scale(1.06) rotate(-4deg);}
.s-card h3{font-size:16.5px;margin-bottom:9px;font-weight:600;position:relative;z-index:1;}
.s-card p{font-size:14px;color:var(--ink-500);line-height:1.65;position:relative;z-index:1;}

@media (max-width:900px){.services-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.services-grid{grid-template-columns:1fr;}}

/* ============================================================
   Technologies
   ============================================================ */
.tech-section{background:var(--paper-100);}
.tech-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;}
.tech-chip{
  background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:20px 10px;display:flex;flex-direction:column;align-items:center;gap:10px;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
}
.tech-chip:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);}
.tech-chip i{font-size:22px;color:var(--red-600);}
.tech-chip span{font-size:12px;font-weight:600;color:var(--ink-700);}
@media (max-width:900px){.tech-grid{grid-template-columns:repeat(4,1fr);}}
@media (max-width:560px){.tech-grid{grid-template-columns:repeat(3,1fr);}}

/* ============================================================
   Solutions (tabs)
   ============================================================ */
.sol-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;}
.sol-tabs{display:flex;flex-direction:column;gap:8px;}
.sol-tab{
  text-align:left;padding:18px 20px;border-radius:var(--radius-md);border:1px solid var(--line);
  background:var(--paper-0);display:flex;align-items:center;gap:14px;transition:all .3s var(--ease);
}
.sol-tab i{font-size:17px;color:var(--red-600);width:20px;flex-shrink:0;}
.sol-tab strong{display:block;font-size:15px;font-weight:600;color:var(--ink-900);}
.sol-tab span{font-size:12.5px;color:var(--ink-500);}
.sol-tab.active{border-color:var(--red-600);background:linear-gradient(135deg,#fff,var(--paper-50));box-shadow:var(--shadow-sm);}
.sol-panel{
  background:linear-gradient(155deg,var(--red-800),var(--red-900));border-radius:var(--radius-lg);
  padding:38px;color:#fff;display:none;box-shadow:var(--shadow-lg);
}
.sol-panel.active{display:block;}
.sol-panel h3{font-size:24px;margin-bottom:14px;}
.sol-panel p{color:rgba(255,255,255,.78);font-size:15px;line-height:1.8;margin-bottom:20px;}
.sol-panel ul{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.sol-panel ul li{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:rgba(255,255,255,.9);}
.sol-panel ul li i{color:var(--gold-300);margin-top:3px;font-size:12px;}
@media (max-width:900px){.sol-wrap{grid-template-columns:1fr;}.sol-panel ul{grid-template-columns:1fr;}}

/* ============================================================
   Process
   ============================================================ */
.process-track{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.process-track::before{
  content:"";position:absolute;top:29px;left:8%;right:8%;height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 8px, transparent 8px 16px);
  z-index:0;
}
.p-step{position:relative;z-index:1;}
.p-num{
  width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--paper-0);border:1.5px solid var(--red-600);color:var(--red-600);
  font-family:var(--font-display);font-weight:700;font-size:19px;margin-bottom:18px;
  transition:all .4s var(--ease);
}
.p-step:hover .p-num{background:var(--red-600);color:#fff;transform:scale(1.08);}
.p-step h3{font-size:16px;margin-bottom:8px;}
.p-step p{font-size:13.5px;color:var(--ink-500);line-height:1.65;}
@media (max-width:900px){.process-track{grid-template-columns:1fr 1fr;}.process-track::before{display:none;}}
@media (max-width:560px){.process-track{grid-template-columns:1fr;}}

/* ============================================================
   Why choose us
   ============================================================ */
.why-section{background:var(--paper-100);}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.w-card{background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-md);padding:26px 22px;transition:all .35s var(--ease);}
.w-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.w-card i{font-size:22px;color:var(--red-600);margin-bottom:14px;}
.w-card h3{font-size:15.5px;margin-bottom:8px;}
.w-card p{font-size:13.5px;color:var(--ink-500);line-height:1.6;}
@media (max-width:900px){.why-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.why-grid{grid-template-columns:1fr;}}

/* ============================================================
   Stats
   ============================================================ */
.stats-section{
  background:linear-gradient(155deg,var(--red-800) 0%,var(--red-900) 100%);
  position:relative;overflow:hidden;
}
.stats-section::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 1px 1px, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size:22px 22px;
}
.stats-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;}
.stat-item strong{
  display:block;font-family:var(--font-display);font-size:clamp(32px,4vw,46px);font-weight:700;color:#fff;
}
.stat-item span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.7);font-weight:500;}
@media (max-width:768px){.stats-grid{grid-template-columns:1fr 1fr;row-gap:36px;}}

/* ============================================================
   Projects
   ============================================================ */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.proj-card{
  border-radius:var(--radius-lg);overflow:hidden;position:relative;border:1px solid var(--line);
  background:var(--paper-0);box-shadow:var(--shadow-sm);transition:all .4s var(--ease);
}
.proj-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.proj-thumb{
  height:170px;position:relative;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(155deg,var(--red-700),var(--red-900));overflow:hidden;
}
.proj-thumb i{font-size:38px;color:rgba(255,255,255,.35);}
.proj-thumb::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px, rgba(255,255,255,.14) 1px, transparent 1px);background-size:16px 16px;}
.proj-tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.15);color:#fff;font-size:11px;font-weight:700;padding:5px 11px;border-radius:999px;backdrop-filter:blur(6px);z-index:1;letter-spacing:.03em;}
.proj-body{padding:22px;}
.proj-body h3{font-size:16.5px;margin-bottom:8px;}
.proj-body p{font-size:13.5px;color:var(--ink-500);line-height:1.6;margin-bottom:16px;}
.proj-meta{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:14px;}
.proj-meta span{font-size:12px;color:var(--ink-300);font-weight:600;}
.proj-meta a{font-size:12.5px;font-weight:700;color:var(--red-600);display:flex;align-items:center;gap:5px;}
@media (max-width:900px){.proj-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.proj-grid{grid-template-columns:1fr;}}

/* ============================================================
   Testimonials
   ============================================================ */
.testi-section{background:var(--paper-100);}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.t-card{background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-md);padding:26px 24px;transition:all .35s var(--ease);}
.t-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.t-stars{color:var(--gold-500);font-size:13px;margin-bottom:14px;letter-spacing:2px;}
.t-card p{font-size:14.5px;color:var(--ink-700);line-height:1.75;margin-bottom:20px;}
.t-person{display:flex;align-items:center;gap:12px;}
.t-ava{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--red-500),var(--red-800));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;flex-shrink:0;}
.t-person strong{display:block;font-size:13.5px;}
.t-person span{font-size:12px;color:var(--ink-500);}
@media (max-width:900px){.testi-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.testi-grid{grid-template-columns:1fr;}}









.proj-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
}




/* ============================================================
   FAQ
   ============================================================ */
.faq-wrap{max-width:760px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 4px;background:none;border:none;text-align:left;
  font-family:var(--font-display);font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.faq-q i{color:var(--red-600);flex-shrink:0;transition:transform .35s var(--ease);font-size:14px;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease);}
.faq-a-inner{padding:0 4px 22px;font-size:14.5px;color:var(--ink-500);line-height:1.75;}

/* ============================================================
   Contact
   ============================================================ */
.contact-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:start;}
.contact-info{background:linear-gradient(155deg,var(--red-800),var(--red-900));border-radius:var(--radius-lg);padding:34px;color:#fff;}
.contact-info h3{font-size:21px;margin-bottom:10px;}
.contact-info p{font-size:14px;color:rgba(255,255,255,.75);line-height:1.7;margin-bottom:26px;}
.c-item{display:flex;align-items:center;gap:13px;padding:14px 0;border-top:1px solid rgba(255,255,255,.15);}
.c-item:first-of-type{border-top:none;}
.c-item i{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;}
.c-item strong{display:block;font-size:13.5px;}
.c-item span{font-size:12.5px;color:rgba(255,255,255,.65);}

.contact-form{background:var(--paper-0);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-md);}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.f-group{margin-bottom:18px;position:relative;}
.f-group label{display:block;font-size:12.5px;font-weight:700;color:var(--ink-700);margin-bottom:7px;letter-spacing:.01em;}
.f-group input,.f-group textarea{
  width:100%;padding:12px 14px;border-radius:9px;border:1.4px solid var(--line);
  font-family:var(--font-body);font-size:14px;color:var(--ink-900);background:var(--paper-50);
  transition:border-color .25s var(--ease), background .25s var(--ease);
}
.f-group input:focus,.f-group textarea:focus{border-color:var(--red-600);background:#fff;outline:none;}
.f-group textarea{resize:vertical;min-height:110px;}
.f-group.error input,.f-group.error textarea{border-color:#D33;background:#FFF6F6;}
.f-err{display:none;font-size:12px;color:#D33;margin-top:6px;font-weight:500;}
.f-group.error .f-err{display:block;}
@media (max-width:900px){.contact-wrap{grid-template-columns:1fr;}}
@media (max-width:560px){.f-row{grid-template-columns:1fr;}}

/* Toast */
.toast-wrap{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:10px;}
.toast{
  display:flex;align-items:center;gap:12px;background:var(--ink-900);color:#fff;
  padding:14px 18px;border-radius:12px;box-shadow:var(--shadow-lg);min-width:280px;max-width:340px;
  transform:translateX(120%);opacity:0;transition:all .45s var(--ease);
}
.toast.show{transform:translateX(0);opacity:1;}
.toast i{font-size:18px;flex-shrink:0;}
.toast.success i{color:#3ED685;}
.toast.error i{color:#FF6B6B;}
.toast strong{display:block;font-size:13.5px;}
.toast span{font-size:12px;color:rgba(255,255,255,.65);}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding-top:72px;position:relative;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(145deg,var(--red-500),var(--red-800));}
.footer-brand strong{font-family:var(--font-display);color:#fff;font-size:17px;}
.footer-col p{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.5);margin-bottom:18px;}
.footer-col h4{color:#fff;font-size:13.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:13.5px;color:rgba(255,255,255,.55);transition:color .25s var(--ease);}
.footer-col ul a:hover{color:#fff;}
.footer-social{display:flex;gap:10px;margin-top:6px;}
.footer-social a{width:36px;height:36px;border-radius:9px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .3s var(--ease);}
.footer-social a:hover{background:var(--red-600);transform:translateY(-3px);}
.footer-bottom{padding:22px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12.5px;color:rgba(255,255,255,.45);}
.footer-bottom .dev-credit{
  display:inline-flex;align-items:center;gap:9px;color:rgba(255,255,255,.85);font-weight:700;
  padding:6px 14px 6px 6px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  transition:all .3s var(--ease);
}
.footer-bottom .dev-credit:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.25);transform:translateY(-2px);}
.footer-bottom .dev-credit .fc-ava{width:24px;height:24px;border-radius:50%;overflow:hidden;background:linear-gradient(135deg,var(--red-500),var(--red-800));display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:800;flex-shrink:0;border:1.5px solid rgba(255,255,255,.5);}
.footer-bottom .dev-credit .fc-ava img{width:100%;height:100%;object-fit:cover;}
.footer-bottom .dev-credit small{display:block;font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.45);font-weight:700;}
.footer-bottom .dev-credit strong{display:block;font-size:12.5px;letter-spacing:.01em;}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}

.back-top{
  position:fixed;bottom:24px;right:24px;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(145deg,var(--red-600),var(--red-800));color:#fff;border:none;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all .35s var(--ease);z-index:900;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{transform:translateY(-3px);}


.floating-tg {
  position: fixed;
  bottom: 82px; /* Back-to-top বাটনের ঠিক ওপরে রাখার জন্য */
  right: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(145deg, #229ED9, #1C8CBF);
  color: #fff;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 900;
  transition: all .35s var(--ease);
}
.floating-tg:hover {
  transform: translateY(-3px);
}



/* ============================================================
   Scroll reveal
   ============================================================ */
[data-reveal]{opacity:0;transition:opacity .8s var(--ease), transform .8s var(--ease);will-change:opacity, transform;}
[data-reveal="up"]{transform:translateY(28px);}
[data-reveal="down"]{transform:translateY(-28px);}
[data-reveal="left"]{transform:translateX(-32px);}
[data-reveal="right"]{transform:translateX(32px);}
[data-reveal="scale"]{transform:scale(.94);}
[data-reveal].in-view{opacity:1;transform:translate(0,0) scale(1);}

.stagger.in-view > *{animation:staggerIn .7s var(--ease) both;}
.stagger.in-view > *:nth-child(1){animation-delay:.05s;}
.stagger.in-view > *:nth-child(2){animation-delay:.12s;}
.stagger.in-view > *:nth-child(3){animation-delay:.19s;}
.stagger.in-view > *:nth-child(4){animation-delay:.26s;}
.stagger.in-view > *:nth-child(5){animation-delay:.33s;}
.stagger.in-view > *:nth-child(6){animation-delay:.4s;}
@keyframes staggerIn{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:translateY(0);}}

@keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}
.float{animation:floatY 5s ease-in-out infinite;}

@media (max-width:1024px){
  .main-nav{display:none;}
  .hamburger{display:flex;}
}
@media (max-width:900px){
  .about-grid, .contact-wrap{gap:32px;}
}