/* MentorFunnel — mobile-first, low-bandwidth, no external CSS framework */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg:#fafaf7;
  --ink:#101418;
  --ink2:#3b424a;
  --muted:#6b7380;
  --accent:#0a7d3f;       /* WhatsApp-friendly green */
  --accent2:#075d2f;
  --warn:#b25e09;
  --error:#b51d2a;
  --border:#e6e6df;
  --card:#ffffff;
  --shadow:0 2px 8px rgba(15,20,30,.06);
  --radius:12px;
  --maxw:780px;
}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans Bengali","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--accent2)}
h1,h2,h3{line-height:1.25;margin:0 0 12px;letter-spacing:-0.01em}
h1{font-size:1.65rem;font-weight:700}
h2{font-size:1.25rem;font-weight:700}
h3{font-size:1.05rem;font-weight:600}
p{margin:0 0 12px}
small{font-size:.8125rem}
.muted{color:var(--muted)}
.small{font-size:.875rem}
.xsmall{font-size:.75rem}
.center{text-align:center}
em{font-style:italic;color:var(--accent2);font-weight:600}
code{background:#f0efe9;padding:2px 6px;border-radius:6px;font-size:.85em}

/* Layout */
.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;background:rgba(250,250,247,.95);backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--border)}
.brand{font-weight:700;display:flex;align-items:center;gap:8px}
.brand .dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.topbar-tag{font-size:.8125rem;color:var(--muted)}
main{padding:16px;max-width:var(--maxw);margin:0 auto}
.container{max-width:var(--maxw);margin:0 auto;padding:16px}
.container.narrow{max-width:560px}

footer{padding:24px 16px;text-align:center}

/* Hero */
.hero{padding:6px 0 12px}
.hero h1{font-size:1.55rem;margin-bottom:8px}
.hero .sub{font-size:.98rem;color:var(--ink2);margin-bottom:10px}
.bullets{padding-left:20px;margin:6px 0 10px}
.bullets li{margin-bottom:6px;font-size:.92rem}
@media (min-width:380px){
  .hero h1{font-size:1.7rem}
}

.cta{display:inline-block;padding:14px 18px;font-weight:700;border-radius:var(--radius);
  text-decoration:none;cursor:pointer;font-size:1rem;border:0;transition:transform .04s ease}
.cta.primary{background:var(--accent);color:#fff}
.cta.primary:hover{background:var(--accent2);color:#fff}
.cta.secondary{background:#0e1a2b;color:#fff}
.cta.secondary:hover{background:#1a2942;color:#fff}
.cta.ghost{background:transparent;color:var(--ink);border:1px solid var(--border)}
.cta.block{display:block;width:100%;text-align:center}
.cta.small{padding:8px 12px;font-size:.875rem;font-weight:600}
.cta:active{transform:translateY(1px)}

.risk-reversal{
  margin:10px 0 12px;padding:10px 12px;border-radius:var(--radius);
  background:#fff7e6;border:1px solid #f3d493;color:#5a3b00;font-size:.875rem;line-height:1.4
}
.risk-reversal strong{display:block;margin-bottom:4px}
.risk-reversal.compact{font-size:.8125rem;padding:8px 10px}
@media (min-width:560px){.risk-reversal,.risk-reversal.compact{font-size:.95rem}}
.social-proof{margin-top:14px;background:#eef7f1;border:1px solid #cfe7d8;padding:12px 14px;border-radius:var(--radius)}
.social-proof strong{color:var(--accent2)}

/* Card */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;margin:16px 0;box-shadow:var(--shadow)}
.card.center{text-align:center}

/* Tables */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:8px;border:1px solid var(--border);background:#fff}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:10px 10px;border-bottom:1px solid var(--border);vertical-align:top}
thead th{background:#f3f1ea;font-weight:600;color:#363b44}
tbody tr:last-child td{border-bottom:0}

/* Forms */
.field{display:block;margin:0 0 14px}
.field>span{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.field input[type="text"],.field input[type="tel"],.field input[type="email"],
.field input[type="number"],.field input[type="date"],.field select{
  width:100%;padding:12px 12px;border:1px solid var(--border);border-radius:10px;
  font-size:1rem;background:#fff;color:var(--ink);
  -webkit-appearance:none;appearance:none
}
.field input[type="range"]{width:100%}
.field select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%23555' d='M0 0l6 8 6-8z'/></svg>");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
.field .hint{display:block;color:var(--muted);font-size:.8125rem;margin-top:6px}

.phone{display:flex;align-items:stretch;border:1px solid var(--border);border-radius:10px;background:#fff;overflow:hidden}
.phone .prefix{display:inline-flex;align-items:center;padding:0 12px;background:#f3f1ea;font-weight:600;color:#363b44;border-right:1px solid var(--border)}
.phone input{flex:1;border:0;padding:12px 12px;font-size:1rem;outline:none;background:transparent}

.checkbox{display:flex;align-items:flex-start;gap:10px;margin:8px 0 12px;font-size:.95rem}
.checkbox input{margin-top:4px}

.error{color:var(--error);font-size:.9rem;margin:6px 0 0}

.inline{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.inline input,.inline select{flex:1;min-width:0;padding:10px;border:1px solid var(--border);border-radius:8px;font-size:.95rem}

/* Calculator results */
.bridge{margin-top:14px;padding:12px 14px;border-radius:10px;background:#eef2ff;border:1px solid #cfd9ff;color:#1f2a55}

/* Email optin */
.email-optin{margin-top:14px;padding-top:14px;border-top:1px dashed var(--border)}

/* KPI grid */
.kpi-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media (min-width:640px){.kpi-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.kpi{background:#f7f6f0;border:1px solid var(--border);border-radius:10px;padding:12px}
.kpi .label{font-size:.75rem;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.kpi .value{font-size:1.4rem;font-weight:700;margin-top:4px}

/* Detail rows */
.row-between{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.row-gap{display:flex;gap:8px;flex-wrap:wrap}
.tag{display:inline-block;padding:2px 8px;background:#eef2ff;color:#27306b;border-radius:999px;font-size:.78rem;margin-right:4px}
.tag.ok{background:#e7f5ec;color:#0a5e2c}
.tag.warn{background:#fff3df;color:#7a4a05}
.tag.bad{background:#fbe5e7;color:#8b1421}

.check{font-size:2.5rem;line-height:1;margin-bottom:8px}

@media (min-width:560px){
  h1{font-size:2rem}
  .hero h1{font-size:2.1rem}
}