/* Sfera — design tokens (warm premium, dark) */
:root{
  --bg:        #0b0907;
  --bg-2:      #100d09;
  --bg-3:      #161109;
  --bg-light:  #f4efe6;
  --bg-light-2:#ede4d2;
  --ink:       #f3ece0;
  --ink-dim:   rgba(243,236,224,.66);
  --ink-mute:  rgba(243,236,224,.42);
  --ink-faint: rgba(243,236,224,.16);
  --line:      rgba(243,236,224,.10);
  --line-2:    rgba(243,236,224,.18);
  --gold:      #c9a86b;
  --gold-2:    #d6b87a;
  --gold-deep: #8b6b3d;
  --gold-soft: rgba(201,168,107,.18);
  --ochre:     #b88a3a;
  --bronze:    #6b4a23;
  --on-light-ink: #1d160c;
  --on-light-dim: rgba(29,22,12,.66);
  --on-light-line:rgba(29,22,12,.14);

  --serif: "Manrope", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --sans:  "Manrope", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --display: "Manrope", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1240px;
  --pad:  clamp(20px, 4vw, 64px);
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-pill: 999px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;overflow-x:hidden;max-width:100vw}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* Subtle warm grain over dark bg */
body::before{
  content:"";
  position:fixed;inset:0;pointer-events:none;z-index:1;
  background:
    radial-gradient(1200px 700px at 70% -10%, rgba(201,168,107,.08), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(184,138,58,.05), transparent 70%);
}

a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}

/* Type system */
.h-display{
  font-family:var(--display);
  font-weight:600;
  letter-spacing:-.022em;
  line-height:1.06;
  font-size:clamp(30px, 3.6vw, 56px);
  text-wrap:balance;
}
.h-display em{font-style:normal;color:var(--gold-2);font-weight:600}
.h-1{
  font-family:var(--display);
  font-weight:600;
  letter-spacing:-.02em;
  line-height:1.08;
  font-size:clamp(28px, 3.2vw, 44px);
  text-wrap:balance;
}
.h-1 em{font-style:normal;color:var(--gold-2);font-weight:600}
.h-2{
  font-family:var(--display);
  font-weight:600;
  letter-spacing:-.012em;
  line-height:1.15;
  font-size:clamp(22px, 2vw, 28px);
  text-wrap:balance;
}
.h-2 em{font-style:normal;color:var(--gold-2);font-weight:600}
.lead{
  font-size:clamp(17px, 1.3vw, 20px);
  line-height:1.55;
  color:var(--ink-dim);
  font-weight:400;
  text-wrap:pretty;
  max-width:62ch;
}
.eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:500;
}
.eyebrow .dot{
  display:inline-block;width:5px;height:5px;border-radius:50%;
  background:var(--gold);margin-right:10px;vertical-align:middle;
  box-shadow:0 0 12px var(--gold);
}

/* Layout */
.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--pad);
  position:relative;
  z-index:2;
}
section{position:relative;z-index:2;overflow-x:clip}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;
  border-radius:var(--r-pill);
  font-family:var(--sans);font-weight:500;font-size:15px;letter-spacing:.005em;
  cursor:pointer;border:none;
  transition:transform .25s ease, background .25s ease, box-shadow .25s ease, color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg, #d6b87a 0%, #b08749 100%);
  color:#1d1408;
  box-shadow:0 1px 0 rgba(255,255,255,.35) inset, 0 12px 30px -12px rgba(201,168,107,.6);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.5) inset, 0 18px 40px -12px rgba(201,168,107,.7)}
.btn-ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--line-2);
}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-2)}
.btn .arrow{transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* Section spacing */
.section{padding:clamp(80px, 11vw, 160px) 0}
.section-tight{padding:clamp(60px, 8vw, 110px) 0}

/* Light section */
.section-light{
  background:var(--bg-light);
  color:var(--on-light-ink);
}
.section-light .lead{color:var(--on-light-dim)}
.section-light .h-display em,.section-light .h-1 em,.section-light .h-2 em{color:var(--ochre)}
.section-light .btn-ghost{border-color:var(--on-light-line);color:var(--on-light-ink)}
.section-light .eyebrow{color:var(--ochre)}

/* Card */
.card{
  background:linear-gradient(180deg, rgba(243,236,224,.025), rgba(243,236,224,.01));
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:28px;
  transition:border-color .25s ease, transform .25s ease, background .25s ease;
}
.card:hover{border-color:var(--line-2)}

/* Divider line */
.hr{height:1px;background:var(--line);border:none;margin:0}
.section-light .hr{background:var(--on-light-line)}

/* Number tag */
.numtag{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  color:var(--gold);text-transform:uppercase;
}

/* Anim utilities */
@keyframes spinSlow{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes spinSlowR{from{transform:rotate(0)}to{transform:rotate(-360deg)}}
@keyframes pulseDot{
  0%,100%{opacity:.55;transform:scale(1)}
  50%{opacity:1;transform:scale(1.25)}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}
.fadeUp{animation:fadeUp .8s ease both}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .9s ease, transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:translateY(0)}

/* Selection */
::selection{background:var(--gold);color:#1d1408}

/* Focus */
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

/* Responsive */
@media (max-width: 760px){
  .section{padding:72px 0}
  .wrap{padding:0 20px}
  .h-display{font-size:clamp(26px,7vw,36px)}
  .h-1{font-size:clamp(24px,6vw,32px)}
  .h-2{font-size:clamp(19px,4.5vw,24px)}
  .lead{font-size:15px}
  .sphere-wrap{overflow:hidden}
}