/* ==========================================================================
   BISONO AUDIO — shared stylesheet
   Edit brand colours, type and spacing here once; every page updates.
   ========================================================================== */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}

:root{
  --black:#0a0a08;
  --off-black:#111110;
  --grey-mid:#4D4F4D;
  --grey-light:#8a8c8a;
  --grey-pale:#b8bab8;
  --off-white:#e8e6e0;
  --accent:#c8a96e;
  --accent-dim:#8a7248;
  --hair:rgba(255,255,255,.06);
  --hair-strong:rgba(255,255,255,.10);
  --maxw:860px;
}

body{
  background:var(--black);
  color:var(--off-white);
  font-family:'Jost',sans-serif;
  font-weight:300;
  overflow-x:hidden;
  line-height:1.6;
}

a{color:inherit}

/* Visible keyboard focus everywhere */
a:focus-visible,button:focus-visible{
  outline:1px solid var(--accent);
  outline-offset:3px;
}

/* ============================ NAV ============================ */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:16px 28px;display:flex;align-items:center;justify-content:space-between;
  background:rgba(10,10,8,0.94);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--hair);
}
.nav-brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex-shrink:0}
.nav-brand svg{width:19px;height:auto;display:block}
.nav-word{display:flex;gap:.42em;font-family:'DM Mono',monospace;font-size:10px;letter-spacing:.2em;text-transform:uppercase;line-height:1}
.nav-word .b{color:var(--off-white)}
.nav-word .a{color:var(--grey-mid)}
.nav-links{display:flex;gap:20px;list-style:none;align-items:center}
.nav-links a{color:var(--grey-pale);text-decoration:none;font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;transition:color .2s;padding:8px 0;margin:-4px 0}
.nav-links a:hover{color:var(--off-white)}
.nav-links a.current{color:var(--accent)}
@media(max-width:640px){
  .nav-word{display:none}
  .nav-links{gap:14px}
  nav{padding:14px 20px}
}

/* ============================ HERO (home) ============================ */
.hero{
  min-height:100vh;min-height:100svh;padding:96px 28px 64px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:36px;text-align:center;
}
.mark-wrap{width:min(200px,50vw);flex-shrink:0;position:relative}
.mark-wrap::after{
  content:'';position:absolute;inset:-30%;
  background:radial-gradient(ellipse,rgba(77,79,77,.10) 0%,transparent 68%);
  pointer-events:none;z-index:-1;
}
.mark-wrap svg{width:100%;height:auto;display:block;overflow:visible}

/* Tonearm paths hidden until JS adds .go */
#au,#al,#bt,#bb,#pa,#pb,#pc,#pd{opacity:0}
.go #au{animation:armIn 1.5s cubic-bezier(.4,0,.2,1) .1s forwards}
.go #al{animation:armIn 1.5s cubic-bezier(.4,0,.2,1) .25s forwards}
.go #bt{animation:fadeEl .7s ease 1.55s forwards}
.go #bb{animation:fadeEl .7s ease 1.68s forwards}
.go #pa{animation:fadeEl .5s ease 1.95s forwards}
.go #pb{animation:fadeEl .5s ease 2.05s forwards}
.go #pc{animation:fadeEl .5s ease 1.95s forwards}
.go #pd{animation:fadeEl .5s ease 2.05s forwards}
.rocking{transform-origin:76% 50%;animation:rock 9s ease-in-out infinite alternate}

@keyframes armIn{0%{opacity:0;transform:translateX(16px)}100%{opacity:.9;transform:translateX(0)}}
@keyframes fadeEl{from{opacity:0}to{opacity:1}}
@keyframes rock{from{transform:rotate(-.6deg)}to{transform:rotate(.6deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

.logo-wrap{opacity:0;animation:fadeUp .9s ease 2.4s forwards}
.logo-wrap svg{width:min(210px,58vw);height:auto;display:block;margin:0 auto}

.rule{width:28px;height:1px;background:var(--grey-mid);opacity:0;animation:fadeEl .6s ease 2.65s forwards}

.manifesto{max-width:500px}
.manifesto p{
  font-family:'Cormorant Garamond',serif;font-weight:300;
  font-size:clamp(15px,2.5vw,18px);line-height:1.84;
  color:var(--grey-pale);margin-bottom:16px;opacity:0;
}
.manifesto p strong{color:var(--off-white);font-weight:400}
.manifesto p:nth-child(1){animation:fadeUp .9s ease 2.8s forwards}
.manifesto p:nth-child(2){animation:fadeUp .9s ease 3.0s forwards}
.manifesto p:nth-child(3){animation:fadeUp .9s ease 3.2s forwards}

.hero-cta{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap;opacity:0;animation:fadeUp .8s ease 3.4s forwards}

/* ============================ SHARED LINKS / CTA ============================ */
.cta-p{display:inline-flex;align-items:center;gap:8px;color:var(--off-white);text-decoration:none;font-size:10px;letter-spacing:.22em;text-transform:uppercase;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:3px;transition:color .2s,border-color .2s}
.cta-p:hover{color:var(--accent);border-bottom-color:var(--accent)}
.cta-p svg{width:11px;height:11px;transition:transform .2s}
.cta-p:hover svg{transform:translateX(3px)}
.cta-div{width:1px;height:14px;background:rgba(255,255,255,.1)}
.cta-s{color:var(--grey-light);text-decoration:none;font-size:10px;letter-spacing:.22em;text-transform:uppercase;transition:color .2s}
.cta-s:hover{color:var(--grey-pale)}

.link-arrow{display:inline-flex;align-items:center;gap:7px;color:var(--grey-pale);text-decoration:none;font-size:10px;letter-spacing:.2em;text-transform:uppercase;transition:color .2s}
.link-arrow:hover{color:var(--off-white)}
.link-arrow svg{width:10px;height:10px;transition:transform .2s}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============================ INTERIOR PAGE HEADER ============================ */
.page-head{padding:150px 28px 20px;max-width:var(--maxw);margin:0 auto}
.eyebrow{font-family:'DM Mono',monospace;font-size:9px;letter-spacing:.24em;color:var(--grey-mid);text-transform:uppercase;margin-bottom:18px}
.page-title{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(38px,7vw,64px);line-height:1.02;letter-spacing:-.02em;color:var(--off-white)}
.page-lede{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(17px,2.6vw,21px);line-height:1.7;color:var(--grey-pale);max-width:560px;margin-top:22px}
.page-lede strong{color:var(--off-white);font-weight:400}

/* ============================ GENERIC SECTION / PROSE ============================ */
.section{padding:44px 28px}
.section-inner{max-width:var(--maxw);margin:0 auto}
.section.alt{background:var(--off-black);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.sec-label{font-family:'DM Mono',monospace;font-size:9px;letter-spacing:.22em;color:var(--grey-mid);text-transform:uppercase;margin-bottom:14px}

.prose p{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(16px,2.3vw,19px);line-height:1.78;color:var(--grey-pale);margin-bottom:18px;max-width:640px}
.prose p strong{color:var(--off-white);font-weight:400}
.prose p:last-child{margin-bottom:0}

/* Two-column label/body row (used on interior pages) */
.split{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:680px){.split{grid-template-columns:180px 1fr;gap:56px;align-items:start}}
.split-title{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(30px,5vw,42px);line-height:1.05;letter-spacing:-.01em;color:var(--off-white)}

/* ============================ PRINCIPLES (technology) ============================ */
.principles{display:grid;grid-template-columns:1fr;gap:0;max-width:var(--maxw);margin:0 auto}
.principle{border-top:1px solid var(--hair);padding:30px 0;display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:680px){.principle{grid-template-columns:200px 1fr;gap:40px;align-items:baseline}}
.principle:last-child{border-bottom:1px solid var(--hair)}
.principle-t{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--grey-light)}
.principle-d{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(16px,2.3vw,19px);line-height:1.72;color:var(--grey-pale)}
.principle-d strong{color:var(--off-white);font-weight:400}

/* ============================ STRATOS PRODUCT ============================ */
.stratos-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr;gap:44px}
@media(min-width:680px){.stratos-inner{grid-template-columns:200px 1fr;gap:56px;align-items:start}}
.stratos-name{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(52px,9vw,76px);line-height:1;color:var(--off-white);letter-spacing:-.02em;margin-bottom:8px}
.stratos-sub{font-size:10px;letter-spacing:.22em;color:var(--grey-light);text-transform:uppercase;margin-bottom:22px}
.stratos-price{font-family:'DM Mono',monospace;font-size:12px;letter-spacing:.1em;color:var(--accent-dim);margin-bottom:22px}
.stratos-intro{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(16px,2.4vw,19px);line-height:1.72;color:var(--grey-pale);margin-bottom:36px}
.stratos-intro strong{color:var(--off-white);font-weight:400}

.features{display:grid;grid-template-columns:1fr 1fr;gap:20px 30px}
@media(max-width:480px){.features{grid-template-columns:1fr}}
.feat{border-top:1px solid var(--hair);padding-top:14px}
.feat-t{font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--grey-light);margin-bottom:6px}
.feat-d{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:14px;line-height:1.6;color:var(--grey-pale)}

/* Home Stratos teaser block */
.teaser{background:var(--off-black);border-top:1px solid var(--hair);padding:64px 28px}
.teaser-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr;gap:44px}
@media(min-width:680px){.teaser-inner{grid-template-columns:200px 1fr;gap:56px;align-items:start}}

/* ============================ CONTACT ============================ */
.contact-inner{max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:40px}
@media(min-width:680px){.contact-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.contact-h{font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(28px,4.4vw,40px);line-height:1.15;color:var(--off-white);margin-bottom:16px}
.contact-p{font-size:13px;line-height:1.85;color:var(--grey-light);max-width:400px}
.contact-box{border:1px solid var(--hair-strong);padding:30px 40px;text-align:center;flex-shrink:0}
.box-label{font-family:'DM Mono',monospace;font-size:9px;letter-spacing:.2em;color:var(--grey-mid);text-transform:uppercase;margin-bottom:12px}
.box-email{display:block;font-family:'Cormorant Garamond',serif;font-weight:300;font-size:clamp(13px,4.4vw,18px);overflow-wrap:anywhere;color:var(--off-white);text-decoration:none;margin-bottom:6px;transition:color .2s}
.box-email:hover{color:var(--accent)}
.box-sub{font-size:9px;letter-spacing:.16em;color:var(--grey-mid);text-transform:uppercase}
.contact-list{list-style:none;margin-top:26px;display:grid;gap:18px}
.contact-list li{border-top:1px solid var(--hair);padding-top:14px}
.contact-list .ct{font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--grey-light);margin-bottom:5px}
.contact-list .cd{font-family:'Cormorant Garamond',serif;font-size:15px;color:var(--grey-pale);line-height:1.55}
.contact-list a{color:var(--grey-pale);text-decoration:none;border-bottom:1px solid rgba(255,255,255,.14);transition:color .2s,border-color .2s}
.contact-list a:hover{color:var(--off-white);border-color:var(--accent)}

/* ============================ FOOTER ============================ */
footer{padding:24px 28px;border-top:1px solid rgba(255,255,255,.04);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.foot{font-family:'DM Mono',monospace;font-size:8.5px;letter-spacing:.16em;color:var(--grey-mid);text-transform:uppercase}
.foot a{color:var(--grey-mid);text-decoration:none;transition:color .2s}
.foot a:hover{color:var(--grey-light)}

/* ============================ REDUCED MOTION ============================ */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  #au,#al,#bt,#bb,#pa,#pb,#pc,#pd,.logo-wrap,.rule,.manifesto p,.hero-cta{opacity:1!important}
}

/* ============================ SMALL-SCREEN REFINEMENTS ============================ */
@media(max-width:480px){
  .page-head{padding-top:124px}
  .contact-box{padding:24px 22px}
  .section{padding:38px 22px}
  .teaser{padding:52px 22px}
  .hero{padding:92px 22px 52px}
}
@media(max-width:380px){
  .nav-links{gap:11px}
  .nav-links a{font-size:9px;letter-spacing:.14em}
  nav{padding:14px 16px}
}