/* RHV case studies — dark cinematic, matches reinvented home */
:root{
  --bg:#0a0a0b; --bg-2:#121214; --panel:#17171b; --film:#f4f1ea; --film-ink:#0c0c0d;
  --ink:#f4f1ea; --ink-dim:#8b877f; --ink-dimmer:#5f5c56;
  --line:rgba(244,241,234,.12); --line-2:rgba(244,241,234,.07);
  --accent:#c5f82a; --accent-2:#aec323; --glow:rgba(197,248,42,.5);
  /* RHV's own brand, used for product swatches */
  --rhv-gold:#b8a456; --rhv-gold-light:#d4c88a; --rhv-gold-dark:#8a7a3f; --rhv-cream:#faf9f6; --rhv-charcoal:#333;
  --maxw:1280px; --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,sans-serif;line-height:1.55;
  overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:var(--accent);color:#0a0a0b}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace}
h1,h2,h3{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;letter-spacing:-.03em;line-height:.95}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:fixed;top:-60px;left:14px;z-index:1001;background:var(--accent);color:#0a0a0b;padding:12px 18px;border-radius:10px;font-size:.8rem;font-weight:600;transition:top .25s var(--ease)}
.skip:focus{top:14px}

.grain{position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.05;mix-blend-mode:screen;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(120% 100% at 50% 0%,transparent 55%,rgba(0,0,0,.5))}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,52px);position:relative;z-index:3}
.eyebrow{font-family:'JetBrains Mono';font-size:.7rem;text-transform:uppercase;letter-spacing:.16em;color:var(--accent);
  display:flex;align-items:center;gap:.7rem;flex-wrap:wrap}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);flex:none}

/* nav */
header.nav{position:fixed;top:0;left:0;width:100%;z-index:900;display:flex;justify-content:space-between;
  align-items:center;padding:20px clamp(20px,4vw,52px);transition:background .5s var(--ease)}
header.nav.stuck{background:rgba(10,10,11,.7);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-2)}
.nav .logo{font-family:'Bricolage Grotesque';font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:.55rem}
.nav .logo b{width:11px;height:11px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--glow)}
.nav nav{display:flex;gap:8px;font-family:'JetBrains Mono';font-size:.7rem;text-transform:uppercase;letter-spacing:.1em}
.nav nav a{padding:8px 14px;border:1px solid var(--line);border-radius:30px;transition:.4s var(--ease);color:var(--ink-dim)}
.nav nav a:hover{background:var(--ink);color:#0a0a0b;border-color:var(--ink)}

/* hero */
.c-hero{padding:20vh 0 0}
.c-hero .kicker{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-bottom:2rem}
.c-hero .kicker .pill{font-family:'JetBrains Mono';font-size:.66rem;text-transform:uppercase;letter-spacing:.12em;
  border:1px solid var(--line);border-radius:30px;padding:7px 13px;color:var(--ink-dim)}
.c-hero .kicker .pill.on{border-color:var(--accent);color:var(--accent)}
.c-hero h1{font-size:clamp(2.8rem,10vw,9rem);text-transform:uppercase;margin:0;line-height:.86}
.c-hero h1 em{font-style:normal;color:var(--accent);text-shadow:0 0 50px var(--glow)}
.c-lead{font-family:'Bricolage Grotesque';font-weight:600;font-size:clamp(1.4rem,3.4vw,2.7rem);
  line-height:1.16;letter-spacing:-.02em;max-width:22ch;margin:2.4rem 0 0}
.c-meta{display:flex;gap:clamp(28px,5vw,72px);flex-wrap:wrap;margin:4rem 0 0;border-top:1px solid var(--line);padding-top:1.6rem}
.c-meta .m h4{font-family:'JetBrains Mono';font-size:.64rem;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-dimmer);margin-bottom:.7rem}
.c-meta .m p{font-size:.95rem;max-width:30ch;color:var(--ink)}
.c-meta .m .chips{display:flex;flex-wrap:wrap;gap:7px}
.c-meta .m .chips span{font-family:'JetBrains Mono';font-size:.72rem;border:1px solid var(--line);padding:6px 11px;border-radius:30px;color:var(--ink-dim)}

/* stat band */
.c-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:clamp(20px,3vw,40px);
  margin:clamp(60px,9vh,110px) auto 0;max-width:var(--maxw);padding:clamp(34px,5vw,52px) clamp(20px,4vw,52px);
  background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.c-stats .s b{font-family:'Bricolage Grotesque';font-size:clamp(2rem,5vw,3.4rem);font-weight:800;display:block;line-height:1;color:var(--accent)}
.c-stats .s span{font-family:'JetBrains Mono';font-size:.66rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-dim);margin-top:.6rem;display:block}

/* body */
.c-body{max-width:64ch;margin:clamp(70px,10vh,120px) auto 0;padding:0 clamp(20px,4vw,52px)}
.c-body .eyebrow{margin-bottom:1.8rem}
.c-body h2{font-size:clamp(1.9rem,4vw,3rem);text-transform:uppercase;margin:0 0 1.4rem}
.c-body p{font-size:clamp(1.02rem,1.5vw,1.22rem);color:#cdc9c0;margin-bottom:1.4rem}
.c-body p strong{color:var(--ink);font-weight:600}
.c-body .pull{font-family:'Bricolage Grotesque';font-weight:700;font-size:clamp(1.5rem,3.4vw,2.4rem);
  line-height:1.15;letter-spacing:-.01em;color:var(--ink);margin:2.4rem 0;padding-left:1.4rem;border-left:2px solid var(--accent)}
.c-body .pull em{font-style:normal;color:var(--accent)}

/* feature / principle list */
.c-list{max-width:64ch;margin:clamp(40px,6vh,70px) auto 0;padding:0 clamp(20px,4vw,52px);display:grid;gap:0}
.c-list .item{border-top:1px solid var(--line);padding:1.8rem 0}
.c-list .item h3{font-size:clamp(1.2rem,2.4vw,1.6rem);text-transform:uppercase;margin-bottom:.7rem;display:flex;align-items:baseline;gap:.8rem}
.c-list .item h3 .n{font-family:'JetBrains Mono';font-size:.8rem;color:var(--accent);font-weight:500;flex:none}
.c-list .item p{color:var(--ink-dim);font-size:1rem;max-width:60ch}

/* device gallery */
.c-devices{margin:clamp(70px,10vh,130px) auto 0;padding:0 clamp(20px,4vw,52px);max-width:var(--maxw)}
.c-devices .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:clamp(20px,3vw,40px);align-items:start}
.dev{position:relative}
.dev .frame{position:relative;aspect-ratio:1125/2436;border-radius:30px;overflow:hidden;border:7px solid #1c1c20;
  background:#000;box-shadow:0 40px 80px -34px rgba(0,0,0,.85),0 0 0 1px var(--line)}
.dev .frame img{width:100%;height:100%;object-fit:cover}
.dev .cap{font-family:'JetBrains Mono';font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-dim);margin-top:1rem;text-align:center}
.dev:nth-child(even){margin-top:clamp(20px,4vw,52px)}

/* design system / palette */
.c-system{max-width:var(--maxw);margin:clamp(70px,10vh,120px) auto 0;padding:0 clamp(20px,4vw,52px)}
.swatches{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:14px;margin-top:2rem}
.sw{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg-2)}
.sw .chip{height:90px}
.sw .meta{padding:12px 14px}
.sw .meta b{font-size:.86rem;display:block}
.sw .meta span{font-family:'JetBrains Mono';font-size:.72rem;color:var(--ink-dim)}
.type-row{display:flex;flex-wrap:wrap;gap:clamp(24px,4vw,60px);margin-top:2.4rem;border-top:1px solid var(--line);padding-top:2rem}
.type-row .t h4{font-family:'JetBrains Mono';font-size:.64rem;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-dimmer);margin-bottom:.8rem}
.type-row .t .serif{font-family:'Bricolage Grotesque';font-weight:800;font-size:2.2rem;letter-spacing:-.02em}
.type-row .t .body{font-size:1.1rem;color:var(--ink-dim)}

/* stack table */
.c-table{max-width:var(--maxw);margin:clamp(50px,7vh,90px) auto 0;padding:0 clamp(20px,4vw,52px)}
.c-table table{width:100%;border-collapse:collapse;font-size:.95rem}
.c-table th{font-family:'JetBrains Mono';font-size:.64rem;text-transform:uppercase;letter-spacing:.12em;color:var(--ink-dimmer);
  text-align:left;padding:0 0 1rem;border-bottom:1px solid var(--accent)}
.c-table td{padding:1rem 1.4rem 1rem 0;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-dim)}
.c-table td:first-child{color:var(--ink);font-weight:500;width:22%}
.c-table td:nth-child(2){font-family:'JetBrains Mono';font-size:.86rem;color:var(--accent-2);width:30%}
@media(max-width:680px){.c-table td:first-child,.c-table td:nth-child(2){width:auto}.c-table table,.c-table tbody,.c-table tr,.c-table td{display:block;width:100%}.c-table thead{display:none}.c-table tr{border-bottom:1px solid var(--line);padding:1rem 0}.c-table td{border:0;padding:.2rem 0}}

/* reveal */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* next / footer */
.c-next{display:block;border-top:1px solid var(--line);margin-top:clamp(80px,12vh,160px);
  padding:clamp(50px,8vh,90px) 0;transition:background .4s var(--ease)}
.c-next:hover{background:var(--accent);color:#0a0a0b}
.c-next .wrap{display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;flex-wrap:wrap}
.c-next small{font-family:'JetBrains Mono';font-size:.68rem;text-transform:uppercase;letter-spacing:.16em;color:var(--ink-dim)}
.c-next:hover small{color:rgba(10,10,11,.65)}
.c-next h2{font-size:clamp(2rem,6vw,4.6rem);text-transform:uppercase;margin-top:.6rem}
.c-next .arr{font-size:clamp(2rem,6vw,4rem);color:var(--accent)}
.c-next:hover .arr{color:#0a0a0b}
footer{border-top:1px solid var(--line);padding:30px 0}
footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-family:'JetBrains Mono';font-size:.74rem;
  color:var(--ink-dim);text-transform:uppercase;letter-spacing:.06em}

@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}