/* =========================================================================
   Soundwave Digital — Design System
   Direction: "Frequency / Cyan-Magenta" — near-black data-viz, neon spectrum.
   One edit in :root re-themes the whole site.
   ========================================================================= */

:root{
  /* Color */
  --bg:#06070D;
  --bg-2:#0B0D17;
  --surface:#111422;
  --surface-2:#161A2B;
  --line:#1E2336;
  --line-2:#2A3050;
  --text:#F4F7FF;
  --muted:#8B93A7;
  --muted-2:#5C6377;
  --cyan:#22D3EE;
  --magenta:#E879F9;
  --blue:#6366F1;
  --good:#34D399;
  --grad:linear-gradient(90deg,#22D3EE 0%,#6366F1 50%,#E879F9 100%);
  --grad-soft:linear-gradient(135deg,rgba(34,211,238,.16),rgba(232,121,249,.16));
  --glow-cyan:0 0 40px rgba(34,211,238,.35);
  --glow-mag:0 0 40px rgba(232,121,249,.30);

  /* Type */
  --font-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"Space Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  /* Space / shape */
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --maxw:1200px;
  --pad:clamp(1.2rem,5vw,2rem);
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --header-h:74px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html.lenis,html.lenis body{scroll-behavior:auto !important} /* Lenis guard */
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-size:1.0625rem;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
::selection{background:rgba(34,211,238,.3);color:#fff}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(2.5rem,6vw,5rem)}
h2{font-size:clamp(1.9rem,3.8vw,3.1rem)}
h3{font-size:clamp(1.25rem,2vw,1.6rem)}
p{color:var(--text)}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad)}
.wrap-narrow{max-width:880px;margin-inline:auto;padding-inline:var(--pad)}
section{position:relative}
.section-pad{padding-block:clamp(4rem,9vw,8rem)}
.bg-2{background:var(--bg-2)}
.eyebrow{
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1rem;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--grad)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--muted);max-width:60ch}
.center{text-align:center}
.center .lede,.center .eyebrow{margin-inline:auto}
.center .eyebrow{justify-content:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:.98rem;
  padding:.85rem 1.5rem;border-radius:999px;position:relative;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);color:#05060c;box-shadow:0 8px 30px -8px rgba(34,211,238,.5)}
.btn-primary::after{ /* sheen sweep */
  content:"";position:absolute;top:0;left:-80%;width:55%;height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg);transition:left .55s ease;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(34,211,238,.65)}
.btn-primary:hover::after{left:130%}
.btn-ghost{border:1px solid var(--line-2);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px);box-shadow:var(--glow-cyan)}
@media (prefers-reduced-motion:reduce){.btn-primary::after{display:none}.btn:hover{transform:none}}

/* ---------- Header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(6,7,13,.6);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:background .3s,border-color .3s;
}
.site-header.scrolled{background:rgba(6,7,13,.88);border-bottom-color:var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;font-size:1.2rem;letter-spacing:-.01em}
.brand .eq{display:inline-flex;align-items:flex-end;gap:2px;height:22px}
.brand .eq i{width:3px;background:var(--grad);border-radius:2px;animation:eq 1.1s ease-in-out infinite}
.brand .eq i:nth-child(1){height:40%;animation-delay:-.2s}
.brand .eq i:nth-child(2){height:90%;animation-delay:-.5s}
.brand .eq i:nth-child(3){height:60%;animation-delay:-.1s}
.brand .eq i:nth-child(4){height:100%;animation-delay:-.7s}
@keyframes eq{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}
@media (prefers-reduced-motion:reduce){.brand .eq i{animation:none;transform:scaleY(.8)}}
.brand b{font-weight:700}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-links a{font-size:.95rem;color:var(--muted);font-weight:500;position:relative;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .3s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:1rem}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;z-index:1100}
.nav-toggle span{width:24px;height:2px;background:var(--text);transition:.3s;border-radius:2px}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:920px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .mobile-drawer{
    position:fixed;inset:0;z-index:1050;background:rgba(6,7,13,.97);backdrop-filter:blur(20px);
    display:flex;flex-direction:column;justify-content:center;gap:1.4rem;padding:2rem;
    transform:translateX(100%);transition:transform .4s cubic-bezier(.7,0,.2,1);
  }
  .nav-open .mobile-drawer{transform:translateX(0)}
  .mobile-drawer a{font-family:var(--font-display);font-size:1.6rem;color:var(--text);font-weight:600}
  .mobile-drawer .btn{margin-top:1rem;align-self:flex-start}
}
@media (min-width:921px){.mobile-drawer{display:none}}

/* ---------- Cards ---------- */
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.8rem;overflow:hidden;
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.card::before{ /* hairline */
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);
  opacity:.6;transition:opacity .35s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card .ico{
  width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:1.1rem;
  background:var(--grad-soft);border:1px solid var(--line-2);color:var(--cyan);
}
.card .ico svg{width:24px;height:24px}
.card h3{margin-bottom:.6rem}
.card p{color:var(--muted);font-size:.98rem}
.card-link{margin-top:1.1rem;display:inline-flex;align-items:center;gap:.4rem;color:var(--cyan);font-weight:600;font-size:.92rem}
.card-link svg{width:15px;height:15px;transition:transform .25s}
.card:hover .card-link svg{transform:translateX(4px)}

.grid{display:grid;gap:1.4rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.stat{padding:1.4rem 1.8rem;position:relative;text-align:center}
.stat+.stat::before{content:"";position:absolute;left:0;top:18%;bottom:18%;width:1px;background:linear-gradient(180deg,transparent,var(--line-2),transparent)}
.stat .num{font-family:var(--font-display);font-weight:700;font-size:clamp(2.4rem,5vw,3.6rem);line-height:1}
.stat .lbl{color:var(--muted);font-size:.9rem;margin-top:.5rem}
@media (max-width:700px){.stats{grid-template-columns:1fr}.stat+.stat::before{left:18%;right:18%;top:0;bottom:auto;width:auto;height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}}

/* ---------- Marquee ---------- */
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:3.5rem;width:max-content;animation:marq 38s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marq{to{transform:translateX(-50%)}}
.marquee-track .logo{font-family:var(--font-display);font-weight:600;font-size:1.15rem;color:var(--muted);opacity:.65;white-space:nowrap;transition:color .2s,opacity .2s;letter-spacing:.01em}
.marquee-track .logo:hover{color:var(--text);opacity:1}
@media (prefers-reduced-motion:reduce){.marquee-track{animation:none;flex-wrap:wrap;justify-content:center}}

/* ---------- Quick answer / key facts / tables (AEO) ---------- */
.quick-answer{
  background:var(--grad-soft);border:1px solid var(--line-2);border-left:3px solid var(--cyan);
  border-radius:var(--radius-sm);padding:1.3rem 1.5rem;margin:1.6rem 0;
}
.quick-answer .qa-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:.4rem}
.quick-answer p:last-child{color:var(--text)}
table.key-facts{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.97rem}
table.key-facts th,table.key-facts td{text-align:left;padding:.8rem 1rem;border-bottom:1px solid var(--line)}
table.key-facts th{color:var(--cyan);font-weight:600;width:38%;font-family:var(--font-display)}
table.key-facts td{color:var(--muted)}
table.key-facts tr:hover{background:rgba(34,211,238,.04)}

/* ---------- TOC ---------- */
.toc{border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.2rem 1.4rem;background:var(--surface);margin:1.6rem 0}
.toc p{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem}
.toc ul{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem}
.toc a{color:var(--cyan);font-size:.92rem}
.toc a:hover{text-decoration:underline}

/* ---------- FAQ ---------- */
.faqs details{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:.8rem;background:var(--surface);overflow:hidden;transition:border-color .25s}
.faqs details[open]{border-color:var(--line-2)}
.faqs summary{padding:1.15rem 1.4rem;font-family:var(--font-display);font-weight:600;font-size:1.05rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;list-style:none}
.faqs summary::-webkit-details-marker{display:none}
.faqs summary::after{content:"+";font-size:1.5rem;color:var(--cyan);transition:transform .25s;font-family:var(--font-body)}
.faqs details[open] summary::after{transform:rotate(45deg)}
.faqs details p{padding:0 1.4rem 1.3rem;color:var(--muted)}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{position:relative;padding-top:calc(var(--header-h) + clamp(3rem,7vw,6rem));padding-bottom:clamp(2.5rem,5vw,4rem);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:
  radial-gradient(60% 80% at 80% 0%,rgba(232,121,249,.14),transparent 60%),
  radial-gradient(55% 70% at 10% 10%,rgba(34,211,238,.16),transparent 60%);}
.page-hero .breadcrumbs{font-size:.85rem;color:var(--muted-2);margin-bottom:1.2rem;font-family:var(--font-mono)}
.page-hero .breadcrumbs a{color:var(--muted)}
.page-hero .breadcrumbs a:hover{color:var(--cyan)}
.page-hero h1{max-width:18ch;margin-bottom:1.1rem}
.page-hero .lede{font-size:clamp(1.05rem,1.8vw,1.35rem)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;text-align:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band::before{content:"";position:absolute;inset:0;z-index:-1;background:
  radial-gradient(50% 120% at 50% 100%,rgba(99,102,241,.18),transparent 70%),
  radial-gradient(40% 90% at 80% 0%,rgba(232,121,249,.14),transparent 70%),
  radial-gradient(40% 90% at 20% 0%,rgba(34,211,238,.14),transparent 70%);}
.cta-band h2{max-width:20ch;margin-inline:auto;margin-bottom:1rem}
.cta-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:1.8rem}

/* ---------- Forms ---------- */
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(1.6rem,4vw,2.6rem)}
.field{margin-bottom:1.1rem}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:.45rem;color:var(--text)}
.field .req{color:var(--magenta)}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--radius-sm);
  padding:.85rem 1rem;color:var(--text);font-family:inherit;font-size:1rem;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.field textarea{min-height:130px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
@media (max-width:560px){.form-row{grid-template-columns:1fr}}
.form-note{font-size:.85rem;color:var(--muted);margin-top:.4rem}
.form-success{display:none;text-align:center;padding:2rem;color:var(--good)}
.form-success.show{display:block}

/* ---------- Footer ---------- */
.site-footer{position:relative;border-top:1px solid var(--line);padding-top:clamp(3rem,6vw,5rem);overflow:hidden;background:var(--bg-2)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.site-footer h5{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:1.1rem}
.site-footer ul li{margin-bottom:.65rem}
.site-footer a{color:var(--muted);font-size:.95rem;transition:color .2s}
.site-footer a:hover{color:var(--cyan)}
.footer-brand p{color:var(--muted);font-size:.95rem;max-width:34ch;margin-top:1rem}
.footer-contact{font-style:normal;color:var(--muted);font-size:.95rem;line-height:1.9;margin-top:1rem}
.footer-contact a{display:block}
.footer-bottom{margin-top:3rem;border-top:1px solid var(--line);padding:1.5rem 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;color:var(--muted-2);font-size:.85rem}
.footer-watermark{position:absolute;left:0;right:0;bottom:-3vw;font-family:var(--font-display);font-weight:700;font-size:18vw;line-height:.8;color:transparent;-webkit-text-stroke:1px rgba(244,247,255,.05);text-stroke:1px rgba(244,247,255,.05);text-align:center;pointer-events:none;user-select:none;white-space:nowrap}

/* ---------- Reveal (GSAP) ---------- */
[data-reveal]{opacity:0}
@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1 !important}}

/* ---------- Grain overlay ---------- */
.grain{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.035;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}

/* ---------- Custom cursor ---------- */
html.has-cursor,html.has-cursor *{cursor:none}
html.has-cursor input,html.has-cursor textarea,html.has-cursor select{cursor:auto}
.cursor-dot,.cursor-ring{position:fixed;top:0;left:0;z-index:10000;pointer-events:none;border-radius:50%;mix-blend-mode:screen;opacity:0;transition:opacity .3s}
.cursor-dot{width:7px;height:7px;background:var(--cyan);transform:translate(-50%,-50%)}
.cursor-ring{width:38px;height:38px;border:1.5px solid var(--magenta);transform:translate(-50%,-50%)}
html.has-cursor.cursor-ready .cursor-dot,html.has-cursor.cursor-ready .cursor-ring{opacity:1}
.cursor-ring.is-active{width:60px;height:60px;border-color:var(--cyan);background:rgba(34,211,238,.06)}

/* ---------- Misc ---------- */
.pill{display:inline-flex;align-items:center;gap:.45rem;font-size:.82rem;font-family:var(--font-mono);letter-spacing:.04em;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.4rem .9rem}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--good);box-shadow:0 0 8px var(--good)}
hr.rule{border:none;height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent);margin:2.5rem 0}
.prose p{margin-bottom:1.1rem;color:var(--muted)}
.prose h2{margin:2.2rem 0 1rem}
.prose h3{margin:1.6rem 0 .7rem;color:var(--text)}
.prose ul.bullets{margin:1rem 0 1.4rem;padding-left:0}
.prose ul.bullets li{position:relative;padding-left:1.6rem;margin-bottom:.6rem;color:var(--muted)}
.prose ul.bullets li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:2px;background:var(--grad)}
.prose strong{color:var(--text)}
.skip-link{position:absolute;left:-999px;top:0;z-index:2000;background:var(--cyan);color:#05060c;padding:.7rem 1.2rem;border-radius:0 0 8px 0;font-weight:600}
.skip-link:focus{left:0}