:root {
  --bg: #0e0c11; --bg2: #141118; --panel: #1b1720; --line: #26212c; --line2: #362f3d;
  --text: #efe7da; --muted: #a79fae; --faint: #6f6776;
  --mint: #86c5ae; --coral: #e09a86; --lav: #bfa6e3; --live: #7fcca0;
  --font-body: 'General Sans', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --text-xs: clamp(.75rem, .72rem + .15vw, .8125rem);
  --text-sm: clamp(.875rem, .85rem + .12vw, .9375rem);
  --text-base: clamp(1rem, .97rem + .15vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + .35vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.25rem + 1vw, 2.25rem);
  --text-hero: clamp(2.5rem, 1.6rem + 4vw, 5rem);
  --wrap: 1200px; --r: 14px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: var(--text-base);
  line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--lav); outline-offset: 3px; border-radius: 4px; }
.wrap { width: min(var(--wrap), 100% - 2.5rem); margin-inline: auto; }
.mono { font-family: var(--font-mono); }

/* header */
.top { position: sticky; top: 0; z-index: 20; background: rgba(14, 12, 17, .82); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .3s var(--ease); }
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 600; letter-spacing: -.01em; font-size: 1.0625rem; }
.brand svg { width: 26px; height: 26px; }
.nav { display: flex; align-items: center; gap: 1.75rem; font-size: var(--text-sm); }
.nav a { text-decoration: none; color: var(--muted); transition: color .2s; }
.nav a:hover { color: var(--text); }
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .7rem 1.15rem; border-radius: 999px; font-size: var(--text-sm);
  font-weight: 500; text-decoration: none; border: 1px solid var(--line2); color: var(--text); transition: background .2s, border-color .2s, transform .2s var(--ease); }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn.primary:hover { background: #fff; transform: translateY(-1px); }
.nav .btn { padding: .5rem .95rem; color: var(--text); }

/* hero */
.hero { padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(2.5rem, 5vw, 4rem); text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: -20% -10% auto; height: 620px; pointer-events: none;
  background: radial-gradient(40% 50% at 30% 40%, rgba(134, 197, 174, .10), transparent 70%),
              radial-gradient(35% 45% at 72% 35%, rgba(191, 166, 227, .10), transparent 70%); }
.pill { display: inline-flex; align-items: center; gap: .55rem; font-size: var(--text-xs); color: var(--muted);
  border: 1px solid var(--line2); border-radius: 999px; padding: .35rem .8rem; margin-bottom: 1.75rem; position: relative; }
.pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--lav); box-shadow: 0 0 0 3px rgba(191, 166, 227, .18); }
h1 { font-size: var(--text-hero); line-height: 1.02; letter-spacing: -.035em; font-weight: 600; max-width: 15ch; margin: 0 auto; position: relative; }
h1 em { font-style: normal; color: var(--mint); }
.lede { color: var(--muted); max-width: 58ch; margin: 1.5rem auto 0; font-size: var(--text-lg); line-height: 1.5; position: relative; }
.cta { display: flex; justify-content: center; gap: .75rem; flex-wrap: wrap; margin-top: 2.25rem; position: relative; }
.small { font-size: var(--text-xs); color: var(--faint); margin-top: 1rem; position: relative; }

.shot { margin-top: clamp(3rem, 6vw, 4.5rem); position: relative; }
.frame { border-radius: 16px; padding: 6px; background: linear-gradient(180deg, var(--line2), var(--line));
  box-shadow: 0 40px 120px -40px rgba(0, 0, 0, .8), 0 0 0 1px rgba(191, 166, 227, .12); }
.frame img { border-radius: 11px; width: 100%; }
.cap { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; margin-top: 1.1rem; font-size: var(--text-xs); color: var(--faint); }
.cap span { display: inline-flex; align-items: center; gap: .45rem; }
.cap b { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }

/* sections */
section { padding: clamp(4rem, 8vw, 7rem) 0; }
.eyebrow { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .14em; color: var(--lav); font-weight: 500; }
h2 { font-size: var(--text-xl); line-height: 1.15; letter-spacing: -.025em; font-weight: 600; margin-top: .75rem; max-width: 22ch; }
.sub { color: var(--muted); max-width: 56ch; margin-top: 1rem; }

.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.split.rev .media { order: -1; }
.media { border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); background: var(--bg2); }
.media img { width: 100%; }
.list { list-style: none; margin-top: 1.75rem; display: grid; gap: 1.1rem; }
.list li { display: grid; grid-template-columns: 22px 1fr; gap: .8rem; color: var(--muted); }
.list li strong { color: var(--text); font-weight: 500; display: block; }
.list svg { margin-top: .3rem; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden; margin-top: 3rem; }
.card { background: var(--bg); padding: clamp(1.5rem, 3vw, 2.25rem); }
.card h3 { font-size: var(--text-lg); font-weight: 600; letter-spacing: -.01em; margin: 1rem 0 .5rem; }
.card p { color: var(--muted); font-size: var(--text-sm); line-height: 1.6; }
.ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--panel); border: 1px solid var(--line2); }

.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2rem; }
.mode { border-radius: var(--r); padding: 1.5rem; background: var(--bg2); position: relative; }
.mode.paper { box-shadow: inset 0 0 0 2px rgba(191, 166, 227, .55); }
.mode.live { box-shadow: inset 0 0 0 2px rgba(127, 204, 160, .55); }
.mode .tag { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .1em; }
.mode.paper .tag { color: var(--lav); } .mode.live .tag { color: var(--live); }
.mode p { color: var(--muted); font-size: var(--text-sm); margin-top: .5rem; }

.band { background: var(--bg2); border-block: 1px solid var(--line); }
.final { text-align: center; }
.final h2 { margin-inline: auto; }
.final .sub { margin-inline: auto; }

/* legal pages */
.doc { padding: clamp(3rem, 7vw, 5rem) 0 clamp(4rem, 8vw, 6rem); }
.doc .wrap { max-width: 720px; }
.doc h1 { font-size: var(--text-xl); text-align: left; margin: .75rem 0 0; max-width: none; letter-spacing: -.02em; }
.doc h2 { font-size: var(--text-lg); margin-top: 2.25rem; max-width: none; letter-spacing: -.01em; }
.doc p, .doc li { color: var(--muted); margin-top: .9rem; }
.doc ul { padding-left: 1.2rem; }
.note { border: 1px dashed var(--line2); border-radius: 12px; padding: 1rem 1.2rem; margin-top: 1.75rem; color: var(--muted); font-size: var(--text-sm); }
.note strong { color: var(--text); font-weight: 500; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 3rem 0 2.5rem; font-size: var(--text-sm); color: var(--faint); }
.foot { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.foot nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.foot nav a { text-decoration: none; color: var(--muted); }
.foot nav a:hover { color: var(--text); }
.disc { margin-top: 2rem; font-size: var(--text-xs); line-height: 1.65; max-width: 90ch; }

/* reveal */
.rv { opacity: 0; transform: translateY(14px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

@media (max-width: 900px) {
  .split, .modes { grid-template-columns: 1fr; }
  .split.rev .media { order: 0; }
  .grid3 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav a:not(.btn) { display: none; }
  .cap { gap: .9rem; }
}

/* security diagram */
.flow { display: grid; gap: 0; justify-items: center; padding: clamp(1.5rem, 3vw, 2.5rem); border: 1px solid var(--line); border-radius: var(--r); background: var(--bg2); }
.node { width: 100%; max-width: 360px; border: 1px solid var(--line2); border-radius: 12px; padding: 1.1rem 1.25rem; background: var(--bg); display: grid; gap: .2rem; }
.node:first-child { box-shadow: inset 0 0 0 1px rgba(191, 166, 227, .35); }
.node .k { font-size: var(--text-xs); letter-spacing: .12em; color: var(--faint); }
.node strong { font-weight: 600; font-size: var(--text-lg); }
.node .f { font-size: var(--text-xs); color: var(--muted); }
.wire { display: grid; justify-items: center; gap: .35rem; padding: .5rem 0; }
.wire span { width: 1px; height: 18px; background: linear-gradient(var(--mint), transparent); }
.wire span:last-child { background: linear-gradient(transparent, var(--mint)); }
.wire em { font-style: normal; font-size: var(--text-xs); color: var(--mint); }
.none { margin-top: 1.25rem; display: inline-flex; align-items: center; gap: .5rem; font-size: var(--text-xs); color: var(--muted); }