/* VOLUMA product page. System fonts, inline icons, no external requests.
   Shape rule: surfaces 20px, small media 12px, every interactive control a full pill.
   One accent (amber) on a cool neutral base, in both themes. */
:root{
  --bg:#0b0c0e; --bg2:#101216; --panel:#14171c; --panel2:#191d23;
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.16);
  --ink:#f2f3f5; --muted:#9ba2ad; --faint:#6f7784;
  --accent:#ff8a3d; --accent-ink:#1b0f04; --accent-soft:rgba(255,138,61,.14);
  --ok:#4ade80;
  --shadow:0 30px 80px -20px rgba(0,0,0,.65);
  --r:20px; --r-sm:12px; --max:1180px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",system-ui,sans-serif;
  --display:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,monospace;
  color-scheme:dark light;
}
@media (prefers-color-scheme:light){
  :root{
    --bg:#f4f5f7; --bg2:#eceef2; --panel:#ffffff; --panel2:#f7f8fa;
    --line:rgba(15,17,21,.10); --line2:rgba(15,17,21,.18);
    --ink:#0f1115; --muted:#4a515c; --faint:#6b7380;
    --accent:#c24d08; --accent-ink:#ffffff; --accent-soft:rgba(194,77,8,.10);
    --ok:#15803d;
    --shadow:0 30px 70px -24px rgba(20,30,50,.28);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
p{margin:0 0 1em}
h1,h2,h3{font-family:var(--display);margin:0;line-height:1.06;text-wrap:balance}
h1{font-size:clamp(2.5rem,5.6vw,4.4rem);font-weight:700;letter-spacing:-.04em}
h2{font-size:clamp(1.9rem,3.8vw,3rem);font-weight:700;letter-spacing:-.035em}
h3{font-size:1.2rem;font-weight:650;letter-spacing:-.015em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:clamp(72px,10vw,128px) 0;position:relative}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;color:#000;padding:8px 14px;border-radius:999px;z-index:99}
.ico{width:1.15em;height:1.15em;flex:none}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}
.lead{font-size:clamp(1.05rem,1.8vw,1.28rem);color:var(--muted);max-width:44ch;line-height:1.5}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head p{color:var(--muted);font-size:1.12rem;margin-top:16px;max-width:60ch}
.eyebrow{font-size:.78rem;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  background:color-mix(in srgb,var(--bg) 70%,transparent);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.02em;text-decoration:none}
.brand img{width:30px;height:30px;border-radius:8px}
.nav nav{margin-left:auto;display:flex;gap:28px;align-items:center}
.nav nav a:not(.btn){font-size:.92rem;color:var(--muted);text-decoration:none;transition:color .2s}
.nav nav a:not(.btn):hover{color:var(--ink)}
@media(max-width:820px){.nav nav a:not(.btn){display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 24px;border-radius:999px;font:600 1rem var(--sans);text-decoration:none;white-space:nowrap;
  border:1px solid var(--line2);background:transparent;color:var(--ink);cursor:pointer;
  transition:transform .3s cubic-bezier(.16,1,.3,1),background .2s,border-color .2s}
.btn:hover{transform:translateY(-2px);border-color:var(--ink)}
.btn:active{transform:translateY(0) scale(.98)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{border-color:var(--accent);filter:brightness(1.06)}
.btn.small{padding:9px 18px;font-size:.9rem}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}

/* hero */
.hero{padding:clamp(40px,7vw,88px) 0 clamp(56px,8vw,104px);overflow:clip}
.hero .wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,72px);align-items:center;min-height:min(720px,calc(100dvh - 64px))}
.hero h1{margin-bottom:22px}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.window{position:relative;border-radius:var(--r);border:1px solid var(--line2);background:var(--panel);box-shadow:var(--shadow);overflow:hidden}
.window img{width:100%;height:auto}
.hero .window{transform:perspective(1600px) rotateY(-5deg) rotateX(1.5deg);transform-origin:left center;transition:transform .8s cubic-bezier(.16,1,.3,1)}
.hero .window:hover{transform:perspective(1600px) rotateY(0) rotateX(0)}
.glow{position:absolute;inset:-12% -8% -12% 8%;z-index:-1;background:radial-gradient(60% 60% at 60% 50%,var(--accent-soft),transparent 70%);filter:blur(30px)}
@media(max-width:940px){.hero .wrap{grid-template-columns:1fr;min-height:0}.hero .window{transform:none}}

/* coverage band */
.band{padding:0 0 clamp(64px,8vw,104px)}
.band-grid{display:grid;grid-template-columns:3fr 2fr;gap:20px}
.band-col{border:1px solid var(--line);background:var(--panel);border-radius:var(--r);padding:26px 28px}
.col-title{font-size:.92rem;color:var(--muted);font-weight:600;letter-spacing:.02em;margin:0 0 16px}
.fs-pills{display:flex;flex-wrap:wrap;gap:10px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;border:1px solid var(--line2);font:600 .95rem var(--mono);background:var(--panel2)}
.pill.rw{border-color:color-mix(in srgb,var(--accent) 55%,transparent);background:var(--accent-soft)}
@media(max-width:760px){.band-grid{grid-template-columns:1fr}}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:minmax(0,auto);gap:20px}
.cell{position:relative;border:1px solid var(--line);background:var(--panel);border-radius:var(--r);padding:30px;overflow:hidden;display:flex;flex-direction:column;gap:12px}
.cell h3{font-size:1.28rem}
.cell p{color:var(--muted);margin:0;max-width:46ch}
.cell .shot{margin-top:auto;border-radius:var(--r-sm);border:1px solid var(--line);overflow:hidden}
.c-a{grid-column:1 / span 4;grid-row:1 / span 2}
.c-b{grid-column:5 / span 2}
.c-c{grid-column:5 / span 2}
.c-d{grid-column:1 / span 3}
.c-e{grid-column:4 / span 3}
.c-a .shot{margin-top:18px}
.cell.tint{background:linear-gradient(160deg,var(--accent-soft),transparent 60%),var(--panel)}
.bignum{font:700 clamp(2.6rem,5vw,3.8rem)/1 var(--display);letter-spacing:-.04em;color:var(--accent)}
.cell .ico-lg{width:34px;height:34px;color:var(--accent)}
@media(max-width:900px){.bento{grid-template-columns:1fr}.c-a,.c-b,.c-c,.c-d,.c-e{grid-column:1;grid-row:auto}}

/* NTFS story */
.story{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:clamp(32px,5vw,80px);align-items:start}
.steps{display:flex;flex-direction:column;gap:0}
.step{padding:42px 0 42px 28px;border-left:2px solid var(--line);min-height:36vh;opacity:.45;transition:opacity .4s,border-color .4s}
.step.on{opacity:1;border-color:var(--accent)}
.step h3{margin-bottom:10px}
.step p{color:var(--muted);max-width:42ch;margin:0}
.stage{position:sticky;top:96px}
.stage .window{aspect-ratio:1250/900}
.stage .frame{position:absolute;inset:0;opacity:0;transition:opacity .5s ease}
.stage .frame.on{opacity:1}
.stage .frame img{width:100%;height:100%;object-fit:cover;object-position:top left}
@media(max-width:900px){.story{grid-template-columns:1fr}.stage{position:static;order:-1}.step{min-height:0;opacity:1;padding:26px 0 26px 22px}}
.nojs .stage .frame{position:static;opacity:1;margin-bottom:16px}.nojs .stage .window{aspect-ratio:auto}

/* benchmarks */
.kpis{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:20px;margin-bottom:20px}
.kpi{border:1px solid var(--line);background:var(--panel);border-radius:var(--r);padding:28px}
.kpi .bignum{margin-bottom:10px}
.kpi p{margin:0;color:var(--muted);font-size:.98rem}
.charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.chart{margin:0;border:1px solid var(--line);background:var(--panel);border-radius:var(--r);padding:28px}
.chart.wide{grid-column:1 / -1}
.stack{display:grid;gap:20px;align-content:start}
.chart h3{margin-bottom:4px}
.chart .sub{color:var(--muted);font-size:.92rem;margin-bottom:22px}
.grp{margin-bottom:20px}.grp:last-child{margin-bottom:0}
.grp-label{font:600 .88rem var(--mono);color:var(--muted);margin-bottom:8px}
.row{display:grid;grid-template-columns:128px 1fr;align-items:center;gap:12px;margin:5px 0}
.row .who{font-size:.86rem;color:var(--muted);white-space:nowrap}
.row .track{display:flex;align-items:center;gap:10px}
.bar{height:14px;border-radius:999px;background:var(--faint);width:var(--w);min-width:4px;transform-origin:left;transition:transform 1.1s cubic-bezier(.16,1,.3,1)}
.bar.us{background:var(--accent)}
.val{font:600 .9rem var(--mono);white-space:nowrap}
.val i{font-style:normal;color:var(--muted);font-weight:500;font-size:.8rem}
.chart .note{margin:18px 0 0;color:var(--faint);font-size:.84rem;line-height:1.5}
.js .bar{transform:scaleX(0)}.js .in .bar{transform:scaleX(1)}
.method{margin-top:24px;color:var(--muted);font-size:.94rem;max-width:80ch}
.method a{color:var(--accent)}
@media(max-width:900px){.kpis{grid-template-columns:1fr}.charts{grid-template-columns:1fr}.row{grid-template-columns:96px 1fr}}

/* filesystems */
.fs-panels{display:grid;grid-template-columns:3fr 2fr;gap:20px}
.fs-panel{border:1px solid var(--line);background:var(--panel);border-radius:var(--r);padding:30px}
.fs-panel.rw{background:linear-gradient(170deg,var(--accent-soft),transparent 55%),var(--panel)}
.fs-panel>h3{font-size:1rem;color:var(--muted);font-weight:600;margin-bottom:22px}
.fs{display:grid;gap:6px;padding:18px 0;border-top:1px solid var(--line)}
.fs:first-of-type{border-top:0;padding-top:0}
.fs b{font:700 1.15rem var(--display);letter-spacing:-.01em}
.fs p{margin:0;color:var(--muted);font-size:.96rem}
.fs .proof{font:500 .8rem var(--mono);color:var(--faint)}
@media(max-width:900px){.fs-panels{grid-template-columns:1fr}}

/* safety */
.safe{display:grid;grid-template-columns:5fr 7fr;gap:clamp(32px,5vw,80px);align-items:start}
.safe-list{display:grid;gap:26px}
.safe-item{display:grid;grid-template-columns:36px 1fr;gap:16px}
.safe-item .ico{width:30px;height:30px;color:var(--accent);margin-top:2px}
.safe-item h3{font-size:1.1rem;margin-bottom:4px}
.safe-item p{margin:0;color:var(--muted)}
.honest{margin-top:28px;padding:20px 22px;border:1px dashed var(--line2);border-radius:var(--r);color:var(--muted);font-size:.96rem}
.honest b{color:var(--ink)}
@media(max-width:900px){.safe{grid-template-columns:1fr}}

/* download */
.dl{border:1px solid var(--line2);border-radius:28px;padding:clamp(28px,5vw,64px);background:linear-gradient(150deg,var(--accent-soft),transparent 50%),var(--panel);display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.dl .appicon{width:84px;height:84px;border-radius:20px;margin-bottom:22px;box-shadow:var(--shadow)}
.dl h2{margin-bottom:14px}
.dl .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.dl ol{margin:0;padding-left:1.2em;color:var(--muted);display:grid;gap:12px}
.dl ol li::marker{color:var(--accent);font-weight:700}
.sha{margin-top:22px;font:500 .78rem var(--mono);color:var(--faint);word-break:break-all}
.dl code{font:500 .88em var(--mono);background:var(--panel2);border:1px solid var(--line);padding:2px 8px;border-radius:8px;color:var(--ink)}
@media(max-width:900px){.dl{grid-template-columns:1fr}}

/* pip command */
.pipbox{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line2);border-radius:999px;padding:8px 8px 8px 22px;background:var(--panel2)}
.pipbox code{background:none;border:0;padding:0;font:600 1rem var(--mono);color:var(--ink)}
.copy{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line2);background:transparent;color:var(--ink);border-radius:999px;padding:8px 16px;font:600 .88rem var(--sans);cursor:pointer;transition:background .2s,transform .3s cubic-bezier(.16,1,.3,1)}
.copy:hover{border-color:var(--ink)}.copy:active{transform:scale(.97)}.copy.done{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.nojs .copy,.no-clip .copy{display:none}

/* faq */
.faq{max-width:840px}
details{border-top:1px solid var(--line);padding:22px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font:600 1.12rem var(--display);list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font:400 1.6rem var(--sans);color:var(--accent);transition:transform .3s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);margin:14px 0 0;max-width:66ch}
details a{color:var(--accent)}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 72px;color:var(--muted);font-size:.95rem}
footer .wrap{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
footer .foot-title{margin:0 0 12px;color:var(--ink);font-size:.95rem;font-weight:650}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer a{text-decoration:none}footer a:hover{color:var(--ink)}
@media(max-width:760px){footer .wrap{grid-template-columns:1fr}}

/* motion: only reveal and state changes; all of it off for reduced motion */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1);transition-delay:var(--d,0s)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .js .bar{transform:none;transition:none}
  .hero .window,.hero .window:hover{transform:none;transition:none}
  .stage .frame,.step{transition:none}
}