/* =========================================================
   FitMaker Ultimate Pro — landing
   Brand: Manual de Marca, Sabatini Design, Apr 2026
   Fonts (free subset of the manual): Roboto, Roboto Condensed
   + Roboto Mono for technical labels.
   ========================================================= */

:root{
  /* Brand palette (manual 2026) */
  --green:#00FF40;   /* Electric Green  — brand color */
  --blue:#00BFFF;    /* Deep Sky Blue   — accent */
  --pink:#FF00BF;    /* Shocking Pink   — accent */
  --snow:#F8F9FA;    /* Bright Snow */
  --platinum:#E9ECEF;
  --alabaster:#DEE2E6;
  --pale-slate:#CED4DA;
  --slate:#ADB5BD;

  /* Dark UI surfaces */
  --bg:#0A0B0D;
  --panel:#121317;
  --panel-raised:#17181D;
  --line:#2A2D33;
  --text:var(--snow);
  --text-dim:var(--slate);
  --text-faint:#7A818A;
  --on-green:#04140A;

  --display:'Roboto Condensed', 'Roboto', system-ui, sans-serif;
  --body:'Roboto', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:'Roboto Mono', ui-monospace, Consolas, monospace;

  --gutter:max(16px, 5vw);
  --maxw:1240px;
  --topbar-h:72px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:var(--topbar-h);}
body{background:var(--bg);color:var(--text);font-family:var(--body);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;}
img{display:block;max-width:100%;}
a{color:inherit;}
button{font:inherit;}
[hidden]{display:none !important;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}*{transition:none !important;}}

.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--green);
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:currentColor;display:inline-block;flex:none;}
.eyebrow-blue{color:var(--blue);}

/* ---------- Flags ---------- */
.flag{display:inline-block;width:1.45em;height:.8em;vertical-align:-.05em;border-radius:1px;box-shadow:0 0 0 1px rgba(255,255,255,.18);}
.flags{display:inline-flex;gap:6px;margin-left:8px;}

/* ---------- Top bar ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--topbar-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:0 var(--gutter);background:rgba(10,11,13,.72);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);transition:background .25s ease;
}
.topbar.scrolled{background:rgba(10,11,13,.94);}
.brandmark{display:flex;align-items:center;mix-blend-mode:screen;}
.brandmark img{height:56px;width:auto;}
.mainnav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.mainnav a{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-dim);text-decoration:none;transition:color .2s ease;white-space:nowrap;
}
.mainnav a:hover,.mainnav a.active{color:var(--text);}
.mainnav a.nav-cta{color:var(--green);border:1px solid rgba(0,255,64,.4);padding:8px 14px;border-radius:999px;}
.mainnav a.nav-cta:hover{background:var(--green);color:var(--on-green);}
.topbar-right{display:flex;align-items:center;gap:12px;}
.langtoggle{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-family:var(--mono);font-size:.72rem;}
.langtoggle button{background:transparent;color:var(--text-dim);border:none;padding:7px 14px;cursor:pointer;letter-spacing:.1em;transition:all .2s ease;}
.langtoggle button.active{background:var(--green);color:var(--on-green);font-weight:700;}
.menu-btn{display:none;width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:999px;cursor:pointer;position:relative;}
.menu-btn span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--text);transition:transform .2s ease,top .2s ease;}
.menu-btn span:first-child{top:15px;}
.menu-btn span:last-child{top:23px;}
.menu-btn[aria-expanded="true"] span:first-child{top:19px;transform:rotate(45deg);}
.menu-btn[aria-expanded="true"] span:last-child{top:19px;transform:rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--body);font-weight:700;font-size:.85rem;
  letter-spacing:.05em;text-transform:uppercase;padding:16px 30px;border-radius:2px;cursor:pointer;
  border:1px solid transparent;transition:all .2s ease;text-decoration:none;
}
.btn-primary{background:var(--green);color:var(--on-green);}
.btn-primary:hover{box-shadow:0 0 24px rgba(0,255,64,.4);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);}
.btn-sm{padding:10px 16px;font-size:.72rem;}
.btn[disabled]{opacity:.5;cursor:wait;}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:0 var(--gutter) 80px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(0,255,64,.10), transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(0,191,255,.10), transparent 55%),
    linear-gradient(180deg,#0A0B0D 0%,#101216 60%,#0A0B0D 100%);
  display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:48px 48px;
}
#heroVideo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.hero-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,11,13,.35) 0%,rgba(10,11,13,.2) 40%,rgba(10,11,13,.92) 100%);z-index:1;}
.vp-label{
  position:absolute;z-index:2;top:calc(var(--topbar-h) + 24px);right:var(--gutter);display:flex;flex-direction:column;font-family:var(--mono);font-size:.75rem;color:var(--text-faint);
  border:1px dashed var(--line);padding:14px 22px;letter-spacing:.08em;text-align:center;background:rgba(18,19,23,.6);
  max-width:min(420px,calc(100% - 2*var(--gutter)));
}
.vp-label b{color:var(--text-dim);font-family:var(--body);font-weight:500;letter-spacing:.03em;margin-bottom:4px;}
.mute-btn{
  position:absolute;z-index:4;top:calc(var(--topbar-h) + 24px);right:var(--gutter);
  display:flex;align-items:center;gap:8px;background:rgba(10,11,13,.6);backdrop-filter:blur(6px);
  border:1px solid var(--line);color:var(--text-dim);font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  padding:10px 16px;border-radius:999px;cursor:pointer;transition:border-color .2s ease,color .2s ease;
}
.mute-btn:hover{border-color:var(--green);color:var(--text);}
.hero.has-feature{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;column-gap:56px;}
.hero-feature{position:relative;z-index:3;width:clamp(220px,min(22vw,calc((100svh - var(--topbar-h) - 150px) * 9 / 16)),320px);margin:0;}
.hf-frame{position:relative;aspect-ratio:9/16;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#000;box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 6px rgba(255,255,255,.03);}
.hf-frame video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.hf-sound{
  position:absolute;top:12px;right:12px;display:flex;align-items:center;gap:6px;
  background:rgba(10,11,13,.7);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.18);color:var(--text);
  font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;padding:8px 12px;border-radius:999px;cursor:pointer;
}
.hf-sound:hover{border-color:var(--green);}
.hf-replay{
  position:absolute;inset:0;margin:auto;width:max-content;height:max-content;display:flex;flex-direction:column;align-items:center;gap:10px;
  background:rgba(10,11,13,.72);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.2);border-radius:14px;color:var(--text);
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;padding:18px 22px;cursor:pointer;transition:border-color .2s ease;
}
.hf-replay svg{width:30px;height:30px;color:var(--green);}
.hf-replay:hover{border-color:var(--green);}
.to-top{
  position:fixed;right:max(16px,2vw);bottom:max(16px,2vw);z-index:90;width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--green);color:var(--on-green);
  box-shadow:0 8px 24px rgba(0,0,0,.45);opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,box-shadow .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{box-shadow:0 0 24px rgba(0,255,64,.5);}
.to-top svg{width:22px;height:22px;}
.hero-feature figcaption{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:var(--text-dim);margin-top:10px;text-align:center;}
.hero-content{position:relative;z-index:3;max-width:920px;padding-top:calc(var(--topbar-h) + 60px);}
.hero h1{
  font-family:var(--display);font-weight:700;font-size:clamp(2.6rem,6.4vw,5.6rem);
  line-height:.96;letter-spacing:-.01em;text-transform:uppercase;margin:18px 0 22px;
}
.hero h1 .accent{color:var(--green);}
.hero p.sub{font-size:1.15rem;color:var(--text-dim);max-width:620px;font-weight:300;margin-bottom:38px;}
.cta-row{display:flex;gap:16px;flex-wrap:wrap;}
.spec-strip{display:flex;margin-top:56px;border-top:1px solid var(--line);max-width:920px;}
.spec-strip>div{flex:1;padding:16px 20px 0;border-right:1px solid var(--line);font-family:var(--mono);}
.spec-strip>div:first-child{padding-left:0;}
.spec-strip>div:last-child{border-right:none;}
.spec-strip dt{font-size:.65rem;color:var(--text-faint);letter-spacing:.1em;text-transform:uppercase;}
.spec-strip dd{font-size:.95rem;color:var(--text);margin-top:4px;}
.spec-strip dd.ip-status{color:var(--green);display:flex;align-items:center;flex-wrap:wrap;gap:4px;}

/* ---------- Generic section ---------- */
section{padding:120px var(--gutter);position:relative;}
.section-head{max-width:720px;margin-bottom:56px;}
.section-head h2{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:clamp(1.9rem,3.4vw,2.8rem);line-height:1.05;margin-top:16px;letter-spacing:-.005em;}
.section-head .lead{color:var(--text-dim);font-weight:300;margin-top:18px;font-size:1.05rem;}

/* ---------- Problems ---------- */
.problems{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.p-card{background:var(--panel);padding:44px 34px;}
.p-card .num{font-family:var(--mono);color:var(--pink);font-size:.75rem;letter-spacing:.1em;}
.p-card h3{font-weight:700;font-size:1.15rem;margin:18px 0 14px;}
.p-card p{color:var(--text-dim);font-size:.95rem;font-weight:300;}

/* ---------- Features ---------- */
.features .grid-4{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.f-card{background:var(--bg);padding:40px 32px;border-top:2px solid transparent;transition:border-color .2s ease;display:flex;flex-direction:column;}
.f-card:hover{border-top-color:var(--blue);}
.f-card .tag{font-family:var(--mono);font-size:.68rem;color:var(--blue);letter-spacing:.1em;}
.f-card h3{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:1.35rem;margin:14px 0 12px;line-height:1.15;}
.f-card p{color:var(--text-dim);font-size:.95rem;font-weight:300;max-width:440px;}
.f-media{margin-top:24px;background:#fff;border-radius:2px;overflow:hidden;aspect-ratio:4/5;}
.f-media img{width:100%;height:100%;object-fit:cover;}
.media-slot{
  margin-top:24px;flex:1;min-height:220px;display:flex;align-items:center;justify-content:center;
  border:1px dashed var(--line);border-radius:2px;padding:16px;font-family:var(--mono);font-size:.7rem;color:var(--text-faint);text-align:center;background:var(--panel-raised);
}

/* ---------- Audiences ---------- */
.audiences{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.aud-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.aud-card{
  background:var(--panel);padding:32px 26px;display:flex;flex-direction:column;gap:12px;text-align:left;
  border:none;color:var(--text);cursor:pointer;transition:background .2s ease;position:relative;
}
.aud-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--c,var(--green));transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.aud-card:hover{background:var(--panel-raised);}
.aud-card:hover::before{transform:scaleX(1);}
.aud-card .aud-num{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;color:var(--c,var(--green));}
.aud-card h3{font-family:var(--display);font-weight:700;font-size:1.15rem;text-transform:uppercase;line-height:1.15;}
.aud-card p{color:var(--text-dim);font-size:.9rem;font-weight:300;flex:1;}
.aud-card .aud-link{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-faint);}
.aud-card:hover .aud-link{color:var(--text);}

/* ---------- Tabs & chips (shared by Media + Docs) ---------- */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--line);margin-bottom:24px;}
.tab{
  background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-1px;color:var(--text-dim);
  font-family:var(--display);font-weight:700;font-size:1.05rem;text-transform:uppercase;letter-spacing:.03em;
  padding:14px 22px 14px 0;margin-right:22px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:color .2s ease,border-color .2s ease;
}
.tab:hover{color:var(--text);}
.tab[aria-selected="true"]{color:var(--text);border-bottom-color:var(--green);}
.tab .count{font-family:var(--mono);font-size:.68rem;font-weight:400;color:var(--text-faint);border:1px solid var(--line);border-radius:999px;padding:1px 8px;}
.tab .ico{width:16px;height:16px;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px;}
.chip{
  background:transparent;border:1px solid var(--line);color:var(--text-dim);border-radius:999px;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;padding:8px 14px;cursor:pointer;transition:all .2s ease;
  display:inline-flex;align-items:center;gap:8px;
}
.chip:hover{border-color:var(--text-faint);color:var(--text);}
.chip[aria-pressed="true"]{background:var(--text);border-color:var(--text);color:var(--bg);}
.chip .n{opacity:.6;}

/* ---------- Media grid ---------- */
.media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.m-item{
  position:relative;display:block;width:100%;border:1px solid var(--line);background:var(--panel-raised);border-radius:2px;
  overflow:hidden;cursor:pointer;padding:0;color:var(--text);text-align:left;transition:border-color .2s ease;
}
.m-item:hover{border-color:var(--text-faint);}
.m-thumb{aspect-ratio:4/3;background:#E9ECEF center/cover no-repeat;position:relative;}
.m-item.video .m-thumb{aspect-ratio:16/9;background-color:#1b1d22;}
.m-thumb img{width:100%;height:100%;object-fit:cover;}
.m-play{
  position:absolute;inset:0;margin:auto;width:56px;height:56px;border-radius:50%;background:rgba(10,11,13,.7);
  border:1px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;color:var(--green);
}
.m-play svg{width:22px;height:22px;margin-left:3px;}
.m-meta{padding:14px 16px;}
.m-meta h3{font-size:.95rem;font-weight:500;line-height:1.35;}
.m-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;}
.m-tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.05em;color:var(--text-faint);border:1px solid var(--line);border-radius:999px;padding:1px 8px;}
.m-item.video.portrait .m-thumb{aspect-ratio:4/5;background-position:center 25%;}
.m-lang{position:absolute;left:8px;bottom:8px;font-family:var(--mono);font-size:.65rem;background:rgba(10,11,13,.8);color:var(--text-dim);padding:2px 6px;border-radius:2px;}
.m-dur{position:absolute;right:8px;bottom:8px;font-family:var(--mono);font-size:.68rem;background:rgba(10,11,13,.8);padding:2px 6px;border-radius:2px;}

.empty{
  grid-column:1/-1;border:1px dashed var(--line);padding:56px 24px;text-align:center;color:var(--text-faint);
  font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;list-style:none;
}
.empty b{display:block;color:var(--text-dim);font-family:var(--display);font-size:1.1rem;text-transform:uppercase;letter-spacing:.03em;margin-bottom:6px;}

/* ---------- Docs ---------- */
.docs{background:var(--panel);border-top:1px solid var(--line);}
.doc-list{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:12px;}
.doc{background:var(--bg);border:1px solid var(--line);border-radius:2px;padding:24px;display:grid;grid-template-columns:auto 1fr;gap:6px 16px;align-items:start;}
.doc .d-ico{grid-row:span 3;width:40px;height:40px;border:1px solid var(--line);border-radius:2px;display:flex;align-items:center;justify-content:center;color:var(--blue);}
.doc.nda .d-ico{color:var(--pink);}
.doc .d-ico svg{width:20px;height:20px;}
.doc h3{font-size:1rem;font-weight:500;line-height:1.35;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.doc p{color:var(--text-dim);font-size:.88rem;font-weight:300;}
.doc .d-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:10px;}
.doc .d-meta{font-family:var(--mono);font-size:.65rem;letter-spacing:.06em;color:var(--text-faint);text-transform:uppercase;}
.doc .soon{font-family:var(--mono);font-size:.65rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);border:1px dashed var(--line);padding:6px 10px;border-radius:2px;}

/* ---------- Patent ---------- */
.patent{background:#050505;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;padding:140px var(--gutter);}
.patent .eyebrow{justify-content:center;color:var(--pink);}
.patent h2{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:clamp(2.2rem,5vw,4.2rem);max-width:960px;margin:24px auto 26px;line-height:1.02;}
.patent h2 .hl{color:var(--green);}
.patent p.desc{max-width:640px;margin:0 auto 48px;color:var(--text-dim);font-size:1.05rem;font-weight:300;}
.team-photo{max-width:760px;margin:0 auto 32px;}
.team-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center 60%;border:1px solid var(--line);border-radius:2px;}
.team-photo figcaption{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--text-faint);margin-top:10px;text-align:left;}
.filings{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:760px;margin:0 auto 24px;text-align:left;}
.filing{border:1px solid var(--line);background:var(--panel);padding:22px 24px;border-radius:2px;}
.filing-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.filing-head .flag{width:36px;height:auto;aspect-ratio:19/10;}
.filing-head .flag.ar{aspect-ratio:14/9;}
.filing-head b{font-family:var(--display);font-size:1.15rem;text-transform:uppercase;letter-spacing:.02em;display:block;line-height:1.1;}
.filing-head small{font-family:var(--mono);font-size:.65rem;color:var(--text-faint);letter-spacing:.06em;}
.filing dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-family:var(--mono);font-size:.75rem;}
.filing dt{color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;font-size:.65rem;padding-top:2px;}
.filing dd{color:var(--text);}
.filing dd.status{color:var(--green);display:flex;align-items:center;gap:8px;}
.filing dd.status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);}
.filing dd.tbd{color:var(--text-faint);}
.patent-meta{display:flex;max-width:760px;margin:0 auto 46px;border:1px solid var(--line);text-align:left;}
.patent-meta>div{flex:1;padding:20px;border-right:1px solid var(--line);}
.patent-meta>div:last-child{border-right:none;}
.patent-meta dt{font-family:var(--mono);font-size:.62rem;color:var(--text-faint);letter-spacing:.1em;text-transform:uppercase;}
.patent-meta dd{font-family:var(--mono);font-size:.9rem;color:var(--green);margin-top:6px;}

/* ---------- Contact ---------- */
.contact{background:var(--panel);}
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;max-width:1100px;margin:0 auto;}
.contact-notes h2{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:2.2rem;line-height:1.05;margin:16px 0 24px;}
.contact-notes p{color:var(--text-dim);font-weight:300;margin-bottom:20px;font-size:.95rem;}
.contact-notes ul{list-style:none;margin-top:28px;}
.contact-notes li{font-family:var(--mono);font-size:.78rem;color:var(--text-faint);padding:10px 0;border-top:1px solid var(--line);display:flex;gap:10px;}
.contact-notes li:last-child{border-bottom:1px solid var(--line);}
.contact-notes .dash{color:var(--blue);}
form{display:flex;flex-direction:column;gap:20px;}
.field label{display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin-bottom:8px;}
.field .req{color:var(--pink);}
.field input,.field select,.field textarea{
  width:100%;background:var(--panel-raised);border:1px solid var(--line);color:var(--text);
  padding:14px 16px;font-family:var(--body);font-size:.95rem;border-radius:2px;outline:none;transition:border-color .2s ease;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-dim) 50%),linear-gradient(135deg,var(--text-dim) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--pink);}
.field .hint{font-size:.72rem;color:var(--text-faint);margin-top:6px;}
.field .err{font-size:.75rem;color:var(--pink);margin-top:6px;}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;margin-top:6px;}
.checkbox-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--green);flex:none;}
.checkbox-row label{font-size:.82rem;color:var(--text-dim);}
.checkbox-row.invalid label{color:var(--pink);}
.submit-btn{margin-top:8px;align-self:flex-start;}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}
.form-status{padding:14px 16px;border:1px solid var(--line);border-left:3px solid var(--blue);font-size:.88rem;background:var(--panel-raised);}
.form-status.ok{border-left-color:var(--green);}
.form-status.error{border-left-color:var(--pink);}

/* ---------- Footer ---------- */
.site-footer{padding:36px var(--gutter);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);font-family:var(--mono);font-size:.7rem;color:var(--text-faint);letter-spacing:.06em;}
.footer-ip{display:inline-flex;align-items:center;gap:6px;}
.footer-ip span{margin-right:4px;}

/* ---------- Lightbox ---------- */
.lightbox{border:none;padding:0;background:transparent;max-width:min(1100px,94vw);width:100%;margin:auto;color:var(--text);overflow:visible;}
.lightbox::backdrop{background:rgba(5,5,6,.92);backdrop-filter:blur(4px);}
.lb-body{background:transparent;display:flex;align-items:center;justify-content:center;max-height:82vh;}
.lb-body img{max-height:82vh;width:auto;max-width:100%;object-fit:contain;}
.lb-body .ratio{position:relative;width:100%;aspect-ratio:16/9;}
.lb-body .ratio.portrait{width:auto;height:min(82vh,1280px);aspect-ratio:9/16;max-width:100%;}
.lb-body iframe,.lb-body video{position:absolute;inset:0;width:100%;height:100%;border:0;}
.lb-caption{font-family:var(--mono);font-size:.75rem;color:var(--text-dim);padding:12px 0;letter-spacing:.04em;}
.lb-close{position:absolute;top:-44px;right:0;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer;}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .aud-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:980px){
  :root{--topbar-h:64px;}
  .brandmark img{height:46px;}
  .menu-btn{display:block;}
  .mainnav{
    position:fixed;top:var(--topbar-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(10,11,13,.98);border-bottom:1px solid var(--line);padding:8px var(--gutter) 20px;
    transform:translateY(-8px);opacity:0;visibility:hidden;transition:all .2s ease;
  }
  .mainnav.open{transform:none;opacity:1;visibility:visible;}
  .mainnav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:.8rem;}
  .mainnav a.nav-cta{border:none;border-radius:0;padding:14px 0;}
  .mainnav a.nav-cta:hover{background:none;color:var(--green);}
}
@media (max-width:860px){
  section{padding:84px var(--gutter);}
  .grid-3,.features .grid-4{grid-template-columns:1fr;}
  .hero.has-feature{grid-template-columns:1fr;row-gap:40px;}
  .hero-feature{width:min(100%,320px);justify-self:center;}
  .vp-label{display:none !important;} /* dev placeholder only; avoid overlapping the H1 */
  .aud-grid{grid-template-columns:1fr 1fr;}
  .contact-wrap{grid-template-columns:1fr;gap:40px;}
  .row-2{grid-template-columns:1fr;}
  .spec-strip{flex-wrap:wrap;}
  .spec-strip>div{flex:1 1 50%;border-bottom:1px solid var(--line);padding:14px 12px 12px 0;}
  .spec-strip>div:nth-child(2n){border-right:none;padding-left:12px;}
  .filings{grid-template-columns:1fr;}
  .patent-meta{flex-direction:column;}
  .patent-meta>div{border-right:none;border-bottom:1px solid var(--line);}
  .patent-meta>div:last-child{border-bottom:none;}
  .doc-list{grid-template-columns:1fr;}
  .p-card,.f-card{padding:32px 22px;}
  .patent{padding:96px var(--gutter);}
}
@media (max-width:520px){
  .aud-grid{grid-template-columns:1fr;}
  .langtoggle button{padding:7px 10px;}
  .hero{padding-bottom:48px;}
  .cta-row .btn{width:100%;justify-content:center;}
  .tab{padding-right:0;margin-right:18px;font-size:.95rem;}
  .media-grid{grid-template-columns:1fr;}
  .chips{flex-wrap:nowrap;overflow-x:auto;margin-right:calc(-1*var(--gutter));padding-right:var(--gutter);scrollbar-width:none;}
  .chips::-webkit-scrollbar{display:none;}
  .chip{white-space:nowrap;flex:none;}
}