/* Minimal aesthetic: calming spacing, generous whitespace, soft motion */
:root{
  --bg:#0b0b0b;
  --fg:#eaeaea;
  --muted:#9a9a9a;
  --accent:#e3f2ff;
  --ring:rgba(255,255,255,0.15);
  --maxw:720px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,system-ui,"Apple Color Emoji","Segoe UI Emoji",sans-serif;
  background:var(--bg);
  color:var(--fg);
  display:flex;
  min-height:100vh;
}
main{
  margin:auto;
  width:100%;
  max-width:var(--maxw);
  padding:4rem 1.25rem;
}
h1,h2{line-height:1.15; letter-spacing:-0.02em; margin:0 0 0.75rem}
h1{font-size:clamp(28px,4.5vw,48px)}
h2{font-size:clamp(18px,3vw,22px); color:var(--muted); font-weight:500}
p{margin:0 0 1rem; color:#d8d8d8}
a{color:inherit; text-decoration:none}
.button{
  display:inline-block;
  padding:0.8rem 1.2rem;
  border:1px solid var(--ring);
  border-radius:999px;
  transition:transform .15s ease, background .2s ease, border-color .2s ease;
  will-change:transform;
}
.button:focus-visible{outline:2px solid var(--ring); outline-offset:3px}
.button:hover{transform:translateY(-2px); border-color:#ffffff30; background:#ffffff08}
.row{display:flex; gap:.75rem; align-items:center; flex-wrap:wrap}
.divider{height:1px; background:#ffffff14; margin:2rem 0}
.heart{display:inline-block; transform:translateY(2px); opacity:.9}
.small{color:var(--muted); font-size:0.95rem}
footer{margin-top:2rem; color:var(--muted); font-size:.9rem}
kbd{padding:2px 6px; border-radius:6px; border:1px solid #ffffff22; background:#ffffff07; font-size:.9em}
.center{text-align:center}
.flow>*+*{margin-top:1rem}
.card{
  border:1px solid var(--ring);
  border-radius:16px;
  padding:1.25rem;
  background:linear-gradient(180deg,#101010,#0b0b0b);
}
hr{border:none;height:1px;background:#ffffff14;margin:1.5rem 0}
/* Video page */
.video-wrap{
  position:relative;
  border:1px solid var(--ring);
  border-radius:16px;
  overflow:hidden;
  background:#000;
}
video{display:block; width:100%; height:auto}
.note{margin-top:.75rem; color:var(--muted)}
/* Letter page */
.letter{
  white-space:pre-wrap;
  font-size:1.05rem;
  letter-spacing:.01em;
}
/* Subtle fade-in */
.fade-in{opacity:0; transform:translateY(8px); animation:fade .6s ease forwards}
@keyframes fade{to{opacity:1; transform:none}}