:root{
  --bg-0:#05080f;
  --bg-1:#0a1224;
  --bg-2:#0e1c34;
  --ink:#d7e2ee;
  --ink-dim:#9fb0c4;
  --accent:#7fb0d8;       /* light-blue headings */
  --accent-soft:#a9cbe6;
  --rule:rgba(127,176,216,.22);
  --card:rgba(120,160,210,.05);
  --maxw:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;font-size:62.5%}  /* 1rem = 10px, matches Sequoia rem scale */
body{
  margin:0;
  font-family:"Lato",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-weight:300;
  color:var(--ink);
  background:var(--bg-0);
  font-size:2rem;
  line-height:1.4;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent-soft);text-decoration:none;border-bottom:1px solid var(--rule)}
a:hover{color:#fff;border-color:var(--accent)}

h1,h2,h3{
  font-family:PitchSans,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,FZLanTingHeiS,sans-serif;
  font-weight:300;line-height:1.15;margin:0;
}
h2{color:var(--accent);font-size:clamp(2.6rem, 1.8253521127rem + 2.0657276995vw, 4.8rem);letter-spacing:.2px;margin-bottom:1.6rem;text-transform:uppercase}
h3{color:#fff;font-weight:700;font-size:1.8rem;letter-spacing:.2px}
.mt{margin-top:4rem}
p{margin:0 0 1.4rem}
strong{font-weight:700;color:#eaf1f8}
em{font-style:italic;color:var(--accent-soft)}

.wrap{max-width:none;margin:0;padding:0 4.8rem}

/* ---------------- BRAND / LOGO ---------------- */
.brand{
  position:absolute;top:3rem;left:4.8rem;z-index:5;
  display:block;line-height:0;border:0;
}
.brand img{
  width:26rem;height:auto;display:block;
  filter:invert(1) hue-rotate(180deg) brightness(1.15);
}

/* ---------------- HERO ---------------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:
    radial-gradient(120% 80% at 80% 10%, #14233f 0%, transparent 55%),
    linear-gradient(180deg,#05080f 0%,#081127 55%,#0c1b33 100%);
}
.stars{
  position:absolute;inset:0;
  background-image:
    radial-gradient(1.4px 1.4px at 20% 30%, #fff, transparent),
    radial-gradient(1.2px 1.2px at 70% 20%, #cfe0f5, transparent),
    radial-gradient(1px 1px at 40% 70%, #fff, transparent),
    radial-gradient(1.3px 1.3px at 85% 60%, #bcd4ef, transparent),
    radial-gradient(1px 1px at 55% 45%, #fff, transparent),
    radial-gradient(1px 1px at 12% 80%, #dce8f7, transparent),
    radial-gradient(1.2px 1.2px at 92% 35%, #fff, transparent);
  opacity:.55;
}
.hero-horizon{
  position:absolute;left:0;right:0;bottom:0;height:42%;
  background:
    linear-gradient(180deg, transparent 0%, rgba(20,40,75,.2) 30%, transparent 60%),
    radial-gradient(140% 120% at 50% 130%,
      #ff7a3c 0%, #d8483e 12%, #7a2c66 26%, #2a2a6b 42%, transparent 60%);
  filter:saturate(1.05);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 35%);
  mask-image:linear-gradient(180deg,transparent,#000 35%);
}
.hero-inner{position:relative;z-index:2;max-width:none;margin:0;padding:0 4.8rem;width:100%}
.hero-title{
  font-size:clamp(5.6rem,3.5rem + 6vw,11rem);
  line-height:0.9;
  letter-spacing:-1px;
  color:#fff;
  text-shadow:0 2px 40px rgba(80,140,210,.35);
}
.hero-sub{
  margin-top:2rem;
  max-width:60rem;
  font-size:clamp(1.4rem,2vw,1.8rem);
  color:var(--ink-dim);
  text-transform:uppercase;
  letter-spacing:1.5px;
  line-height:1.7;
}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2}
.scroll-cue span{
  display:block;width:22px;height:36px;border:1.5px solid var(--rule);border-radius:12px;position:relative;
}
.scroll-cue span::after{
  content:"";position:absolute;top:7px;left:50%;width:3px;height:7px;border-radius:2px;
  background:var(--accent);transform:translateX(-50%);animation:cue 1.6s infinite;
}
@keyframes cue{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,12px)}}

/* ---------------- BANDS ---------------- */
.band{padding:84px 0;position:relative}
.band-people{
  background:linear-gradient(180deg,#0c1b33 0%, #0a1628 100%);
  border-top:1px solid var(--rule);
}
.band-history{
  background:linear-gradient(180deg,#0a1628 0%, #0a1424 100%);
  border-top:1px solid var(--rule);
}
.band-content{
  background:linear-gradient(180deg,#0a1424 0%, #070e1d 100%);
  border-top:1px solid var(--rule);
}
.band-apps{
  background:linear-gradient(180deg,#070e1d 0%, #0b1830 100%);
  border-top:1px solid var(--rule);
}
.wrap.narrow{max-width:780px}
.section-title{margin-bottom:2rem;max-width:none}
.ch{color:var(--accent);font-weight:300;font-size:1.6rem;margin-bottom:.8rem;text-transform:uppercase;letter-spacing:.5px}
.lede-dim{color:var(--ink-dim);font-style:italic}
.dagger{color:var(--ink-dim);font-weight:300}
.name-link{color:inherit;border-bottom:1px solid var(--rule)}
.name-link:hover{color:var(--accent-soft);border-color:var(--accent)}

/* ---------------- PEOPLE ---------------- */
.people-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:56px}
.org{margin-bottom:2.4rem;padding-bottom:1.8rem;border-bottom:1px solid var(--rule)}
.org h3{font-size:1.5rem;color:var(--accent-soft);margin-bottom:.6rem}
.org p{margin:0;color:var(--ink-dim);font-size:1.5rem}
.inventors{list-style:none;margin:.6rem 0 0;padding:0}
.inventors li{padding:.7rem 0;border-bottom:1px solid var(--rule);color:var(--ink-dim);font-size:1.6rem}

.bio{display:flex;gap:20px;margin-bottom:3.8rem}
.bio-body h3{margin-bottom:.8rem}
.bio-portrait{
  flex:0 0 88px;width:88px;height:108px;border-radius:6px;
  border:1px solid var(--rule);
  background:#16263f;
  box-shadow:inset 0 0 30px rgba(0,0,0,.5);
  position:relative;overflow:hidden;
  object-fit:cover;object-position:center top;
}
.bio-portrait::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 45% at 50% 38%, rgba(180,205,230,.35), transparent 70%);
}
.portrait-vl{background:linear-gradient(160deg,#1b2d49,#0f1d33)}
.portrait-vb{background:linear-gradient(160deg,#23344f,#121f36)}

/* ---------------- CONTENT COLUMNS ---------------- */
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.formula{
  font-family:"Lato",serif;font-size:2rem;color:#fff;font-weight:400;
  padding:1.2rem 1.6rem;background:var(--card);border-left:2px solid var(--accent);border-radius:4px;
}
.callout{
  margin:2.2rem 0;padding:1.8rem 2rem;border-radius:8px;
  background:var(--card);border:1px solid var(--rule);
}
.callout p:last-child{margin-bottom:0}
ul.ticks{list-style:none;margin:.6rem 0 1.4rem;padding:0}
ul.ticks li{position:relative;padding:.4rem 0 .4rem 2.2rem;color:var(--ink-dim)}
ul.ticks li::before{content:"▸";position:absolute;left:0;color:var(--accent)}

/* stats */
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:1.6rem 0}
.stat{padding:1.2rem 1.4rem;background:var(--card);border:1px solid var(--rule);border-radius:6px}
.stat .num{display:block;color:#fff;font-size:2rem;font-weight:400}
.stat .lab{display:block;color:var(--ink-dim);font-size:1.2rem;text-transform:uppercase;letter-spacing:.5px}
.fine{color:var(--ink-dim);font-size:1.3rem}

/* inline figures */
.rf-figure{margin:1.8rem 0 0}
.rf-figure img,.phenomena img{
  display:block;width:100%;border-radius:8px;
  border:1px solid var(--rule);
}
.rf-figure img{height:auto}
.phenomena img{aspect-ratio:16/10;object-fit:cover;height:auto}
.rf-figure figcaption,.phenomena figcaption{
  margin-top:.8rem;color:var(--ink-dim);font-size:1.3rem;line-height:1.4;
}

/* phenomena photo row */
.phenomena{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;margin-top:48px}
.phenomena figure{margin:0}

/* diagram + note row */
.dia-note{display:grid;grid-template-columns:1fr 1.2fr;gap:32px;align-items:center;margin-top:48px}
.important{margin:0}

/* apps */
.app-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.app-card{
  position:relative;padding:28px 26px 24px;border-radius:12px;
  background:linear-gradient(160deg, rgba(127,176,216,.07), rgba(127,176,216,.02));
  border:1px solid var(--rule);overflow:hidden;
  transition:transform .35s ease,border-color .35s ease;
}
.app-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.app-num{
  position:absolute;top:10px;right:18px;font-size:5.4rem;font-weight:700;line-height:1;
  color:rgba(127,176,216,.12);
}
.app-card h3{color:var(--accent-soft);font-size:1.8rem;margin-bottom:1rem;position:relative}
.app-card p{color:var(--ink-dim);margin:0;position:relative}

/* diagram — caption styled like the other figures */
.diagram{margin:0}
.diagram svg,.diagram img{
  display:block;width:100%;height:auto;border-radius:8px;border:1px solid var(--rule);
}
.diagram figcaption{margin-top:.8rem;color:var(--ink-dim);font-size:1.3rem;line-height:1.4}

/* ---------------- FOOTER ---------------- */
.site-footer{
  text-align:center;padding:48px 24px;background:#05080f;border-top:1px solid var(--rule);
}
.site-footer p{margin:.4rem 0;font-size:1.5rem}
.muted{color:var(--ink-dim);font-size:1.3rem;letter-spacing:1px;text-transform:uppercase}

/* ---------------- REVEAL ANIM ---------------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-cue span::after{animation:none}
  html{scroll-behavior:auto}
}

/* ---------------- RESPONSIVE ---------------- */
@media (max-width:900px){
  .content-grid{grid-template-columns:1fr;gap:40px}
  .people-grid{grid-template-columns:1fr;gap:40px}
  .dia-note{grid-template-columns:1fr;gap:28px}
  .phenomena{grid-template-columns:1fr;gap:28px}
  .app-grid{grid-template-columns:1fr}
  .band{padding:64px 0}
}
@media (max-width:700px){
  .wrap,.hero-inner{padding:0 2.8rem}
}
@media (max-width:480px){
  .brand{top:1.6rem;left:2.2rem}
  .bio{flex-direction:column;gap:14px}
  .bio-portrait{width:96px;height:118px}
  .wrap,.hero-inner{padding:0 2.2rem}
}