/* ==========================================================================
   Micro Acoustics India Pvt. Ltd. — Engineered Micro-Perforated Acoustics
   Modern Industrial Design System
   ========================================================================== */
:root{
  --green:#3E8E41;--green-dark:#2E6E32;--green-light:#5BB85F;
  --orange:#E8772E;--orange-dark:#C95F1C;--teal:#15545C;--teal-deep:#0E2A38;--steel:#6E7B83;
  --ink:#0E2A38;--ink-soft:#33424B;--muted:#5A6B73;--line:#E2E8EA;
  --bg:#FFFFFF;--bg-soft:#F4F7F8;--bg-steel:#EAF0F1;
  --maxw:1120px;--radius:14px;--radius-sm:9px;
  --shadow-sm:0 2px 10px rgba(14,42,56,.06);--shadow:0 14px 40px rgba(14,42,56,.10);--shadow-lg:0 30px 70px rgba(14,42,56,.16);
  --t:.28s cubic-bezier(.22,.61,.36,1);
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink-soft);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--green)}
h1,h2,h3,h4{color:var(--ink);line-height:1.18;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(1.85rem,4vw,2.8rem)}
h2{font-size:clamp(1.45rem,2.8vw,2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1rem}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:62px 0}
.section.tight{padding:44px 0}
.bg-soft{background:var(--bg-soft)}
.bg-steel{background:var(--bg-steel)}
.bg-dark{background:var(--teal-deep);color:#D7E2E6}
.bg-dark h1,.bg-dark h2,.bg-dark h3,.bg-dark h4{color:#fff}
.center{text-align:center}
.lead{font-size:1.05rem;color:var(--muted);max-width:62ch}
.center .lead{margin-left:auto;margin-right:auto}
.perf-bg{position:relative}
.perf-bg::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;background-image:radial-gradient(rgba(255,255,255,.10) 1.4px,transparent 1.5px);background-size:18px 18px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--green);margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--green);display:inline-block}
.bg-dark .eyebrow{color:var(--green-light)}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:.97rem;padding:14px 26px;border-radius:60px;border:2px solid transparent;cursor:pointer;transition:all var(--t);white-space:nowrap}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 22px rgba(232,119,46,.32)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,119,46,.42)}
.btn-green{background:var(--green);color:#fff;box-shadow:0 8px 22px rgba(62,142,65,.30)}
.btn-green:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--teal);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--green);color:var(--green);background:#fff}
.bg-dark .btn-ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.bg-dark .btn-ghost:hover{border-color:var(--green-light);color:var(--green-light)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
.center .btn-row{justify-content:center}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--ink)}
.brand .logo-mark{width:42px;height:42px;flex:none}
.brand .brand-text{display:flex;flex-direction:column;line-height:1}
.brand .brand-text b{font-size:1.06rem;letter-spacing:-.01em}
.brand .brand-text span{font-size:.6rem;letter-spacing:.13em;text-transform:uppercase;color:var(--green);font-weight:700;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0;flex-wrap:nowrap}
.nav-links a{color:var(--ink-soft);font-weight:600;font-size:.9rem;padding:8px 10px;border-radius:8px;white-space:nowrap}
.nav-links a:hover{color:var(--green);background:var(--bg-soft)}
.nav-links a.active{color:var(--green)}
.nav-cta{margin-left:10px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;width:44px;height:44px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;transition:all var(--t)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{position:relative;background:linear-gradient(135deg,#0E2A38 0%,#15545C 60%,#1B6E6B 100%);color:#E7EEF0;overflow:hidden}
.hero .container{position:relative;z-index:2;padding-top:66px;padding-bottom:72px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{color:#fff;margin-bottom:18px}
.hero h1 .hl{color:var(--green-light)}
.hero p{color:#C7D5DA;font-size:1.05rem;max-width:54ch}
.hero .badges{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 28px}
.pill{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#E7EEF0;font-size:.84rem;font-weight:600;padding:7px 14px;border-radius:40px}
.pill svg{width:15px;height:15px;color:var(--green-light)}
.hero-art{position:relative}
.statband{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden}
.statband .stat{padding:20px 18px;text-align:center;border-right:1px solid var(--line)}
.statband .stat:last-child{border-right:0}
.stat .num{font-size:1.95rem;font-weight:800;color:var(--teal);letter-spacing:-.03em;line-height:1}
.stat .num .u{font-size:1.1rem;color:var(--orange)}
.stat .lbl{font-size:.82rem;color:var(--muted);margin-top:8px;font-weight:600;line-height:1.35}
.statband.on-hero{margin-top:-42px;position:relative;z-index:5}
.sec-head{max-width:660px;margin:0 0 34px}
.sec-head.center{margin-left:auto;margin-right:auto}
.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);height:100%}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;background:linear-gradient(135deg,rgba(62,142,65,.14),rgba(21,84,92,.12));color:var(--green)}
.card .ic svg{width:23px;height:23px}
.card h3{margin-bottom:8px}
.card p{font-size:.97rem;color:var(--muted);margin-bottom:0}
.card.accent .ic{background:linear-gradient(135deg,rgba(232,119,46,.16),rgba(232,119,46,.06));color:var(--orange)}
.prod{display:flex;flex-direction:column;overflow:hidden;padding:0}
.prod .ph{height:158px;position:relative;display:grid;place-items:center;overflow:hidden}
.prod .ph svg{width:100%;height:100%}
.prod .body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.prod .body h3{margin-bottom:6px}
.prod .specs{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}
.spec-chip{background:var(--bg-steel);color:var(--teal);font-size:.78rem;font-weight:700;padding:5px 11px;border-radius:7px}
.spec-chip b{color:var(--orange)}
.prod ul{margin:0 0 18px;padding-left:18px;color:var(--muted);font-size:.93rem}
.prod ul li{margin-bottom:4px}
.prod .body .btn{margin-top:auto;align-self:flex-start}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:13px}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:1rem}
.checks li svg{flex:none;width:22px;height:22px;color:var(--green);margin-top:2px}
.bg-dark .checks li{color:#D7E2E6}
.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.benefit{background:#fff;border:1px solid var(--line);border-radius:11px;padding:16px;display:flex;align-items:center;gap:11px;font-weight:600;font-size:.93rem;color:var(--ink-soft);transition:all var(--t)}
.benefit:hover{border-color:var(--green);box-shadow:var(--shadow-sm)}
.benefit svg{width:20px;height:20px;color:var(--green);flex:none}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
table.data{width:100%;border-collapse:collapse;min-width:560px;background:#fff}
table.data th,table.data td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.96rem}
table.data thead th{background:var(--teal-deep);color:#fff;font-weight:700}
table.data tbody tr:nth-child(even){background:var(--bg-soft)}
table.data tbody tr:hover{background:#EEF6F0}
table.data td b{color:var(--ink)}
.tag-best{color:var(--green);font-weight:800}
.tag-bad{color:var(--steel)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step .n{width:48px;height:48px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;display:grid;place-items:center;font-size:1.2rem;margin-bottom:14px}
.step h3{font-size:1.08rem}
.step p{font-size:.92rem;color:var(--muted);margin:0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.rev .split-media{order:2}
.diagram{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.cta-band{background:linear-gradient(120deg,var(--green) 0%,var(--teal) 100%);color:#fff;border-radius:20px;padding:42px 38px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.9);max-width:58ch;margin:0 auto 22px}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:start}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;gap:15px;align-items:flex-start;margin-bottom:16px;transition:all var(--t)}
.info-card:hover{box-shadow:var(--shadow-sm);border-color:var(--green)}
.info-card .ic{width:46px;height:46px;border-radius:11px;background:linear-gradient(135deg,rgba(62,142,65,.14),rgba(21,84,92,.10));color:var(--green);display:grid;place-items:center;flex:none}
.info-card .ic svg{width:22px;height:22px}
.info-card h4{margin:0 0 3px;font-size:1rem}
.info-card p{margin:0;color:var(--muted);font-size:.95rem}
.info-card a{font-weight:600}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--ink)}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:9px;font-family:inherit;font-size:.97rem;color:var(--ink);transition:border-color var(--t);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green)}
.field textarea{resize:vertical;min-height:120px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note{font-size:.84rem;color:var(--muted);margin-top:6px}
.dl-card{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;transition:all var(--t)}
.dl-card>svg{width:22px;height:22px;color:var(--green);flex:none;margin-left:auto}
.dl-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.dl-card .fic{width:46px;height:46px;border-radius:11px;background:rgba(232,119,46,.12);color:var(--orange);display:grid;place-items:center;flex:none}
.dl-card .fic svg{width:24px;height:24px}
.dl-card .meta{flex:1}
.dl-card h4{margin:0 0 4px;font-size:1.15rem}
.dl-card .meta span{font-size:.95rem;color:var(--muted);line-height:1.5}
.page-hero{background:linear-gradient(135deg,#0E2A38,#15545C);color:#fff;padding:48px 0 52px;position:relative;overflow:hidden}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:#fff;margin-bottom:12px}
.page-hero p{color:#C7D5DA;font-size:1.02rem;max-width:60ch;margin:0}
.crumbs{font-size:.85rem;color:#9FB6BD;margin-bottom:18px}
.crumbs a{color:#9FB6BD}
.crumbs a:hover{color:#fff}
.site-footer{background:var(--teal-deep);color:#A9BCC3;padding:48px 0 24px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px;margin-bottom:32px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:16px}
.site-footer a{color:#A9BCC3;display:block;margin-bottom:9px}
.site-footer a:hover{color:var(--green-light)}
.footer-brand p{color:#8FA6AE;font-size:.92rem;max-width:34ch}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .brand .brand-text b{color:#fff}
.foot-contact{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:#A9BCC3}
.foot-contact svg{width:17px;height:17px;color:var(--green-light);flex:none;margin-top:3px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.10);padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:#7E949C;font-size:.85rem}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-art{max-width:460px}
  .split,.contact-grid{grid-template-columns:1fr;gap:34px}
  .split.rev .split-media{order:0}
  .g-4,.benefits,.steps{grid-template-columns:repeat(2,1fr)}
  .statband{grid-template-columns:repeat(2,1fr)}
  .statband .stat:nth-child(2){border-right:0}
  .statband .stat:nth-child(1),.statband .stat:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:760px){
  body{font-size:16px}.section{padding:60px 0}
  .nav-links{position:fixed;top:74px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:14px 20px 26px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);transform:translateY(-130%);transition:transform var(--t);max-height:calc(100vh - 74px);overflow:auto}
  .nav-links.open{transform:none}
  .nav-links a{padding:13px 8px;border-bottom:1px solid var(--bg-soft);border-radius:0}
  .nav-cta{margin:12px 0 0}.nav-cta .btn{width:100%;justify-content:center}
  .nav-toggle{display:block}
  .g-2,.g-3,.f-row{grid-template-columns:1fr}
  .cta-band{padding:40px 24px}
}
@media(max-width:480px){
  .g-4,.benefits,.steps{grid-template-columns:1fr}
  .statband{grid-template-columns:1fr}
  .statband .stat{border-right:0!important;border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr}
}

/* WhatsApp float + back-to-top -------------------------------------------- */
.wa-float{position:fixed;right:20px;bottom:22px;z-index:1100;width:60px;height:60px;border-radius:50%;
  background:#25D366;color:#fff;display:grid;place-items:center;box-shadow:0 10px 26px rgba(37,211,102,.45);
  transition:transform var(--t),box-shadow var(--t)}
.wa-float svg{width:34px;height:34px}
.wa-float::after{content:"";position:absolute;inset:0;border-radius:50%;background:#25D366;z-index:-1;animation:waPulse 2.4s infinite}
.wa-float:hover{transform:scale(1.08);color:#fff;box-shadow:0 14px 32px rgba(37,211,102,.55)}
.wa-tip{position:absolute;right:72px;background:#0E2A38;color:#fff;font-size:.82rem;font-weight:600;
  white-space:nowrap;padding:8px 13px;border-radius:8px;opacity:0;transform:translateX(8px);pointer-events:none;
  transition:all var(--t);box-shadow:var(--shadow-sm)}
.wa-tip::after{content:"";position:absolute;right:-5px;top:50%;transform:translateY(-50%);border:6px solid transparent;border-left-color:#0E2A38}
.wa-float:hover .wa-tip{opacity:1;transform:none}
@keyframes waPulse{0%{transform:scale(1);opacity:.6}70%{transform:scale(1.6);opacity:0}100%{opacity:0}}
.to-top{position:fixed;right:24px;bottom:92px;z-index:1090;width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;
  background:var(--teal-deep);color:#fff;display:grid;place-items:center;opacity:0;transform:translateY(12px);
  pointer-events:none;transition:all var(--t);box-shadow:var(--shadow)}
.to-top svg{width:22px;height:22px}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:var(--green)}
@media(max-width:760px){.wa-float{width:54px;height:54px;right:16px;bottom:16px}.wa-float svg{width:30px;height:30px}.wa-tip{display:none}.to-top{right:18px;bottom:80px;width:42px;height:42px}}

/* Landing-page extras ----------------------------------------------------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;padding:20px 24px;font-size:1.05rem;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:inherit}
.faq-q svg{width:22px;height:22px;color:var(--green);flex:none;transition:transform var(--t)}
.faq-q[aria-expanded="true"] svg{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-a p{color:var(--muted);font-size:.98rem;padding-bottom:20px;margin:0}
.faq-item.open .faq-a{max-height:340px}
.kw-hero-stats{display:flex;gap:26px;flex-wrap:wrap;margin-top:24px}
.kw-hero-stats .k{display:flex;flex-direction:column}
.kw-hero-stats .k b{font-size:1.7rem;color:#fff;line-height:1}
.kw-hero-stats .k span{font-size:.8rem;color:#9FB6BD;margin-top:4px}


/* Brand logo image (real logo) ------------------------------------------- */
.brand-logo{height:42px;width:auto;display:block;border-radius:6px}
.foot-logo{height:54px;border-radius:8px}
.site-header .brand{gap:0}
@media(max-width:760px){.brand-logo{height:38px}}