:root{
  --bg:#07090d;
  --bg-alt:#0b0f16;
  --ink:#e8edf5;
  --dim:#8b97ab;
  --accent:#64f0c8;
  --accent2:#7aa2ff;
  --line:rgba(255,255,255,.09);
  --max:960px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.65 ui-sans-serif,-apple-system,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
body.plain{background:var(--bg)}

#field{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:-1;
  display:block;
}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
.nav{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(7,9,13,.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  gap:16px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--ink);
  text-decoration:none;
  font:600 13px/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.brand .dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 12px var(--accent);
}
.nav-links{display:flex;gap:6px}
.nav-links a{
  color:var(--dim);
  text-decoration:none;
  font-size:.86rem;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a.on{color:var(--accent);border-color:var(--line)}

/* ---------- hero ---------- */
.hero{
  min-height:86vh;
  display:flex;
  align-items:center;
  position:relative;
}
.hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:220px;
  background:linear-gradient(to bottom,transparent,var(--bg));
  pointer-events:none;
}
.page-head{padding:70px 0 34px}
.kicker{
  font:600 12px/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 22px;
}
h1{
  font-size:clamp(2.4rem,7vw,4.4rem);
  line-height:1.05;
  letter-spacing:-.03em;
  margin:0 0 24px;
  font-weight:700;
}
.page-head h1{font-size:clamp(2.1rem,5.5vw,3.4rem)}
.lede{
  max-width:56ch;
  font-size:clamp(1rem,2.1vw,1.15rem);
  color:#c3ccdb;
  margin:0 0 34px;
}
.hint{
  margin-top:28px;
  font-size:.82rem;
  color:var(--dim);
  font-style:italic;
}
.canvas-hint{margin:12px 0 0;text-align:center}

.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-block;
  padding:11px 20px;
  border-radius:999px;
  background:var(--accent);
  color:#04120e;
  font-weight:650;
  font-size:.92rem;
  text-decoration:none;
  border:1px solid var(--accent);
  cursor:pointer;
  transition:transform .15s ease,background .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.small{padding:8px 15px;font-size:.82rem}

/* ---------- panels ---------- */
.panel{padding:78px 0;border-top:1px solid var(--line);position:relative}
.panel.alt{background:rgba(11,15,22,.82);backdrop-filter:blur(6px)}
.panel:not(.alt){background:rgba(7,9,13,.72);backdrop-filter:blur(4px)}
body.plain .panel{backdrop-filter:none}
h2{
  font-size:clamp(1.6rem,3.4vw,2.3rem);
  letter-spacing:-.02em;
  margin:0 0 14px;
}
.sub{color:var(--dim);max-width:60ch;margin:0 0 34px}
.afterword{margin-top:34px;margin-bottom:0}

/* ---------- rooms ---------- */
.rooms{
  display:grid;
  gap:18px;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}
.room{
  display:block;
  text-decoration:none;
  color:inherit;
  border:1px solid var(--line);
  border-radius:16px;
  padding:24px;
  background:linear-gradient(160deg,rgba(100,240,200,.05),rgba(122,162,255,.03));
  transition:border-color .2s ease,transform .2s ease;
}
.room:hover{border-color:var(--accent);transform:translateY(-3px)}
.room-tag{
  font:600 10px/1 ui-monospace,Menlo,monospace;
  letter-spacing:.18em;text-transform:uppercase;color:var(--accent2);
}
.room h3{margin:12px 0 8px;font-size:1.2rem}
.room p{margin:0;color:var(--dim);font-size:.94rem}
.room-go{
  display:inline-block;margin-top:16px;
  font-size:.86rem;color:var(--accent);font-weight:600;
}

/* ---------- garden canvas ---------- */
#garden{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:220/140;
  border-radius:14px;
  border:1px solid var(--line);
  background:#07090d;
  cursor:crosshair;
  touch-action:none;
}
.rack{
  margin-top:26px;
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px 22px;
  background:rgba(11,15,22,.6);
  display:grid;
  gap:18px;
}
.rack-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.rack-label{
  font:600 10px/1.6 ui-monospace,Menlo,monospace;
  letter-spacing:.16em;text-transform:uppercase;color:var(--dim);
  min-width:64px;
}
.rack-label b{color:var(--accent);font-weight:700;letter-spacing:.06em}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--dim);
  font:inherit;font-size:.82rem;
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease;
}
.chip:hover{color:var(--ink);border-color:rgba(255,255,255,.24)}
.chip.on{color:var(--accent);border-color:var(--accent)}
.chip.swatch em{
  width:12px;height:12px;border-radius:50%;display:inline-block;
}
.sliders{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.sliders label{display:block}
.sliders input[type=range]{
  width:100%;
  margin-top:8px;
  accent-color:var(--accent);
}
.controls{display:flex;gap:10px;flex-wrap:wrap;margin-top:0}

/* ---------- seed card ---------- */
.seed-card{
  border:1px solid var(--line);
  border-radius:16px;
  padding:28px;
  background:linear-gradient(160deg,rgba(100,240,200,.06),rgba(122,162,255,.04));
}
.seed-num{
  font:700 clamp(2rem,8vw,3.6rem)/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.06em;
  color:var(--accent);
  margin-bottom:24px;
  word-break:break-all;
}
.seed-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(130px,1fr));
  gap:18px;
  margin:0;
}
.seed-grid dt{
  font:600 10px/1 ui-monospace,Menlo,monospace;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--dim);
  margin-bottom:6px;
}
.seed-grid dd{margin:0;font-weight:600;font-size:1.02rem}
.swatches{display:flex;gap:8px;margin-top:24px;flex-wrap:wrap}
.swatches i{
  width:44px;height:26px;border-radius:6px;
  border:1px solid rgba(255,255,255,.14);
}
#seed .controls{margin-top:22px}

/* ---------- steps ---------- */
.steps{list-style:none;padding:0;margin:0;display:grid;gap:26px;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.steps li{
  border-left:2px solid var(--line);
  padding:2px 0 2px 18px;
  transition:border-color .25s ease;
}
.steps li:hover{border-color:var(--accent)}
.step-n{
  font:700 11px/1 ui-monospace,Menlo,monospace;
  color:var(--accent2);letter-spacing:.18em;
}
.steps h3{margin:10px 0 8px;font-size:1.12rem}
.steps p{margin:0;color:var(--dim);font-size:.94rem}
code{
  font:0.88em ui-monospace,Menlo,monospace;
  background:rgba(255,255,255,.07);
  padding:1px 6px;border-radius:5px;
}

/* ---------- log ---------- */
.log{list-style:none;padding:0;margin:0}
.log li{
  border-left:2px solid var(--accent);
  padding:0 0 30px 22px;
  position:relative;
}
.log li::before{
  content:"";position:absolute;left:-6px;top:6px;
  width:10px;height:10px;border-radius:50%;
  background:var(--accent);
}
.log li.pending{border-left-color:var(--line)}
.log li.pending::before{background:var(--dim)}
.log time{
  font:600 11px/1 ui-monospace,Menlo,monospace;
  letter-spacing:.16em;text-transform:uppercase;color:var(--dim);
}
.log h3{margin:9px 0 7px;font-size:1.14rem}
.log p{margin:0;color:var(--dim);max-width:62ch;font-size:.95rem}
.log a{color:var(--accent)}

/* ---------- footer ---------- */
footer{
  padding:44px 0 60px;
  border-top:1px solid var(--line);
  background:var(--bg);
  font-size:.87rem;
  color:var(--dim);
}
footer p{margin:0 0 6px}
footer a{color:var(--accent)}
.dim{opacity:.6}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.room{transition:none}
}