/* ====== রং বদলাতে শুধু এই ৫টা লাইন বদলান ====== */
:root{
  --brand:#F57C00;        /* মূল অরেঞ্জ */
  --brand-dark:#C45F00;   /* হোভার / গাঢ় */
  --brand-soft:#FFF1E0;   /* হালকা ব্যাকগ্রাউন্ড */
  --ink:#2B2118;          /* লেখার রং */
  --muted:#6F6257;        /* হালকা লেখা */
  --line:#F0DFCB;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Hind Siliguri',system-ui,sans-serif;color:var(--ink);line-height:1.75;font-size:16px;background:#fff}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
section{padding:72px 0}
h1,h2,h3{line-height:1.35;font-weight:700}
h2{font-size:clamp(24px,3.4vw,34px);text-align:center;margin-bottom:12px}
.sub{text-align:center;color:var(--muted);max-width:620px;margin:0 auto 44px}
:focus-visible{outline:3px solid var(--brand-dark);outline-offset:3px}

/* Header */
header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--brand-dark)}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:18px}
nav ul{display:flex;gap:26px;list-style:none;align-items:center}
nav a{font-weight:500;color:var(--ink)}
nav a:hover{color:var(--brand-dark)}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:11px 24px;border-radius:999px;font-weight:600;border:0;cursor:pointer;font-family:inherit;font-size:16px;transition:background .2s}
.btn:hover{background:var(--brand-dark)}
.btn.ghost{background:#fff;color:var(--brand-dark);border:2px solid var(--brand)}
.btn.ghost:hover{background:var(--brand-soft)}
.menu-btn{display:none;background:none;border:0;font-size:28px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{background:linear-gradient(135deg,var(--brand) 0%,#FF9A3C 100%);color:#fff;padding:84px 0}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(30px,5vw,50px);margin-bottom:16px}
.hero p{font-size:18px;opacity:.95;margin-bottom:28px;max-width:520px}
.hero .btn{background:#fff;color:var(--brand-dark)}
.hero .btn:hover{background:var(--brand-soft)}
.hero .btn.ghost{background:transparent;color:#fff;border-color:#fff;margin-left:10px}
.hero .btn.ghost:hover{background:rgba(255,255,255,.15)}
.ph{background:rgba(255,255,255,.18);border:2px dashed rgba(255,255,255,.7);border-radius:22px;aspect-ratio:4/3;display:grid;place-items:center;text-align:center;padding:20px;font-size:15px}
.ph.light{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}

.art svg{width:100%;height:auto;display:block;border-radius:22px}
.logo .lm{width:36px;height:36px;flex:none}
/* Three features */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.trio article{text-align:center;padding:10px 12px}
.ico{width:76px;height:76px;margin:0 auto 18px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand)}
.ico svg{width:38px;height:38px}
.trio h3{font-size:20px;margin-bottom:8px}
.trio p{color:var(--muted)}

/* Alternating */
.alt{background:var(--brand-soft)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.row:last-child{margin-bottom:0}
.row.flip .txt{order:2}
.row h2{text-align:left;font-size:clamp(22px,3vw,30px)}
.row p{color:var(--muted);margin-bottom:14px}
.row ul{list-style:none;margin:14px 0 24px}
.row li{padding-left:30px;position:relative;margin-bottom:8px}
.row li::before{content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:50%;background:var(--brand)}
.row li::after{content:"";position:absolute;left:5px;top:13px;width:5px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.row .ph{background:#fff}

/* Categories */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat{background:#fff;border:1px solid #DDD;border-radius:6px;padding:34px 12px 22px;text-align:center;font-weight:600;font-size:16px;display:flex;flex-direction:column;align-items:center;gap:18px;transition:border-color .2s,box-shadow .2s}
.cat:hover{border-color:var(--brand);box-shadow:0 6px 18px rgba(245,124,0,.15)}
.cat svg{width:110px;height:88px}
.cat span{display:block}

/* Trust */
.trust{background:var(--brand);color:#fff}
.trust h2{color:#fff}
.trust .sub{color:#FFE3C4}
.badges{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.badge{background:rgba(255,255,255,.14);border:2px dashed rgba(255,255,255,.7);border-radius:18px;padding:30px 18px;text-align:center}
.badge b{display:block;font-size:18px;margin-bottom:4px}

/* Testimonials */
.tests{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.test{border:1px solid var(--line);border-radius:18px;padding:26px;background:#fff}
.test p{margin-bottom:16px}
.who{display:flex;align-items:center;gap:12px}
.av{width:44px;height:44px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center;font-weight:700}
.who small{color:var(--muted);display:block;line-height:1.3}

/* Testimonials */
.tsec{padding-top:24px}
.tgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.tcard{background:var(--brand-soft);display:flex;align-items:center;gap:22px;padding:34px 28px;border-bottom:1px solid var(--line)}
.tav{flex:none;width:124px;height:124px;border-radius:50%;overflow:hidden;border:2px solid var(--brand);padding:3px;background:#fff}
.tav svg{width:100%;height:100%;border-radius:50%}
.tbody{flex:1;text-align:center}
.tq{font-size:18px;font-weight:600;line-height:1.6;margin-bottom:14px;position:relative}
.tq::before{content:"\275D";color:var(--brand);opacity:.6;margin-right:6px}
.tq::after{content:"\275E";color:var(--brand);opacity:.6;margin-left:6px}
.tname{display:inline-block;border:1px solid var(--brand);border-radius:22px;padding:4px 22px;background:#fff;color:var(--brand-dark);line-height:1.4}
.tname b{display:block;font-size:15px}
.tname small{font-size:13px;color:var(--brand-dark)}
/* About + contact */
.about{background:var(--brand-soft)}
.about .grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about h2{text-align:left}
.about p{color:var(--muted);margin-bottom:14px}
form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}
label{display:block;font-weight:600;margin-bottom:6px}
input,textarea{width:100%;font:inherit;padding:11px 14px;border:1px solid #E3CFB8;border-radius:10px;margin-bottom:16px;background:#fff;color:var(--ink)}
input:focus,textarea:focus{border-color:var(--brand);outline:2px solid var(--brand-soft)}
#msg{margin-top:12px;font-weight:600;color:var(--brand-dark)}

/* Footer */
footer{background:#2B2118;color:#E8D9C6;padding:48px 0 24px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:28px}
footer h4{color:#fff;margin-bottom:10px}
footer li{list-style:none;margin-bottom:6px}
footer a:hover{color:#FFB061}
.copy{border-top:1px solid #4a3b2e;padding-top:18px;font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* Mobile */
@media(max-width:860px){
  section{padding:52px 0}
  .menu-btn{display:block}
  nav ul{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 20px;gap:16px;border-bottom:1px solid var(--line)}
  nav ul.open{display:flex}
  .hero .wrap,.row,.about .grid,.trio,.badges,.tests,.fgrid,.tgrid{grid-template-columns:1fr}
  .tcard{flex-direction:column;text-align:center}
  .row.flip .txt{order:0}
  .row{gap:24px;margin-bottom:48px}
  .cats{grid-template-columns:repeat(2,1fr)}
  .hero .btn.ghost{margin:10px 0 0}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Auth pages */
.auth{max-width:440px;margin:56px auto 72px;padding:0 20px}
.auth h1{font-size:28px;margin-bottom:6px;color:var(--brand-dark)}
.auth .lead{color:var(--muted);margin-bottom:20px}
.msg{padding:12px 14px;border-radius:10px;margin-bottom:16px;font-weight:600}
.msg.err{background:#FDECEA;color:#B3261E}
.msg.ok{background:#E8F5E9;color:#1B5E20}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alt-link{text-align:center;margin-top:16px}
.alt-link a{color:var(--brand-dark);font-weight:600}
.acct{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;margin-bottom:22px}
.acct h2{text-align:left;font-size:20px;margin-bottom:14px}
.acct dt{color:var(--muted);font-size:14px}
.acct dd{font-weight:600;margin-bottom:12px}
.hint{font-size:13px;color:var(--muted);margin:-10px 0 16px}