/* ============================================================
   HYDROGEN ORBITAL LAB — visual system
   ============================================================ */
:root{
  --bg-0:#040208;
  --ink:#f6edf5;
  --ink-1:#c9bccf;
  --ink-2:#9c8ca8;
  --ink-3:#6d6277;
  --pink:#ff3ea5;
  --pink-2:#ff86cd;
  --pink-3:#ffc7e8;
  --cyan:#45b9ff;
  --line:rgba(255,255,255,.075);
  --line-2:rgba(255,255,255,.14);
  --font-display:"Bodoni MT","Didot","Playfair Display","Songti SC",Georgia,serif;
  --font-sans:"Segoe UI","PingFang SC","Microsoft YaHei UI","Noto Sans SC",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Cascadia Mono","SF Mono",Consolas,"Courier New",monospace;
}
*{box-sizing:border-box}
html{background:#040208}
html,body{height:100%}
body{
  margin:0;
  overflow:hidden;
  color:var(--ink);
  font-family:var(--font-sans);
  background:
    radial-gradient(1100px 720px at 14% -14%, rgba(130,28,146,.34), transparent 62%),
    radial-gradient(900px 720px at 90% 2%, rgba(28,64,148,.20), transparent 60%),
    radial-gradient(1200px 900px at 64% 114%, rgba(92,20,124,.28), transparent 66%),
    radial-gradient(760px 560px at 50% 48%, rgba(34,10,48,.55), transparent 72%),
    #040208;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::selection, ::selection{background:rgba(255,62,165,.35); color:#fff}
button{font:inherit; color:inherit}
::selection{background:rgba(255,62,165,.35)}

.bg-grid{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:76px 76px;
  -webkit-mask-image:radial-gradient(ellipse 78% 70% at 50% 48%, #000 8%, transparent 78%);
  mask-image:radial-gradient(ellipse 78% 70% at 50% 48%, #000 8%, transparent 78%);
}
.bg-noise{
  position:fixed; inset:0; z-index:0; pointer-events:none; opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}
.bg-vignette{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(ellipse 90% 80% at 50% 45%, transparent 40%, rgba(2,1,5,.62) 100%);
}

.app{position:relative; z-index:1; display:flex; flex-direction:column; height:100vh; height:100dvh;}

/* ---------------- header ---------------- */
.topbar{
  position:relative;
  flex:0 0 auto;
  display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:24px;
  padding:19px 30px 15px;
  animation:rise .8s cubic-bezier(.2,.8,.2,1) both;
}
.topbar::after{
  content:""; position:absolute; left:30px; right:30px; bottom:0; height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.13) 18%, rgba(255,120,200,.34) 50%, rgba(255,255,255,.13) 82%, transparent);
  opacity:.75;
}
.tb-side{display:flex; flex-direction:column; gap:3px; font-family:var(--font-mono); font-size:8.5px; letter-spacing:.22em; color:#574c62; text-transform:uppercase}
.tb-side.right{text-align:right}
.tb-side .tag{color:#8b7b98}
.tb-center{text-align:center}
.topbar h1{
  margin:0;
  font-size:clamp(19px,1.85vw,27px);
  font-weight:600;
  letter-spacing:.36em; text-indent:.36em;
  color:#fff;
  text-shadow:0 0 22px rgba(255,70,170,.40), 0 0 64px rgba(255,70,170,.20);
}
.tb-subline{
  margin:7px 0 0;
  display:flex; align-items:center; justify-content:center; gap:12px;
  font-family:var(--font-mono); font-size:8.5px; letter-spacing:.28em; text-transform:uppercase;
  color:#93829f;
  white-space:nowrap;
}
.tb-subline i{font-style:normal; color:rgba(255,110,190,.55)}
.tb-subline .math{letter-spacing:.06em; color:#d3b7dc; font-style:italic; font-family:var(--font-display); font-size:12px; text-transform:none}

/* ---------------- layout ---------------- */
.layout{
  flex:1 1 auto; min-height:0;
  display:grid;
  grid-template-columns:minmax(0,1fr) clamp(344px,27vw,412px);
  gap:16px;
  padding:14px 20px 18px;
}

/* ---------------- stage ---------------- */
.stage{
  position:relative;
  min-width:0; min-height:0;
  border-radius:20px;
  overflow:hidden;
  isolation:isolate;
  border:1px solid rgba(255,255,255,.085);
  background:
    radial-gradient(88% 72% at 50% 44%, rgba(74,16,86,.52), transparent 72%),
    radial-gradient(52% 44% at 50% 50%, rgba(124,22,96,.24), transparent 76%),
    linear-gradient(180deg, #07030d, #040209);
  box-shadow:
    inset 0 0 150px rgba(126,14,84,.22),
    inset 0 1px 0 rgba(255,255,255,.05),
    0 30px 80px rgba(0,0,0,.55);
  cursor:grab;
  touch-action:none;
  animation:stageIn 1.2s cubic-bezier(.2,.8,.2,1) both;
}
.stage.grabbing{cursor:grabbing}
.stage::after{
  content:""; position:absolute; left:0; right:0; top:0; height:1px; z-index:6;
  background:linear-gradient(90deg, transparent, rgba(255,110,195,.5), transparent);
  opacity:.7;
}
.layer{position:absolute; inset:0; width:100%; height:100%; display:block}
#starCanvas{z-index:1}
#cloudCanvas{z-index:2}

.ambient{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(48% 42% at 50% 45%, rgba(255,62,165,.16), transparent 70%),
    radial-gradient(72% 58% at 16% 94%, rgba(52,96,190,.14), transparent 70%),
    radial-gradient(62% 52% at 88% 6%, rgba(150,40,180,.14), transparent 70%);
  mix-blend-mode:screen;
  opacity:.95;
}
.gridlines{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 72% 66% at 50% 50%, #000 4%, transparent 74%);
  mask-image:radial-gradient(ellipse 72% 66% at 50% 50%, #000 4%, transparent 74%);
  opacity:.5;
}
.scanline{
  position:absolute; left:0; right:0; top:-180px; height:180px; z-index:4; pointer-events:none;
  background:linear-gradient(to bottom, transparent, rgba(255,90,180,.02) 40%, rgba(255,90,180,.05) 52%, transparent 100%);
  mix-blend-mode:screen;
  filter:blur(6px);
  animation:scan 15s linear infinite;
  opacity:.55;
}
.vignette{
  position:absolute; inset:0; z-index:3; pointer-events:none;
  background:
    radial-gradient(ellipse 62% 58% at 50% 48%, transparent 38%, rgba(3,1,7,.55) 100%),
    linear-gradient(180deg, rgba(3,1,7,.35), transparent 22%, transparent 76%, rgba(3,1,7,.5));
}
.reticle{position:absolute; inset:0; z-index:4; pointer-events:none}
.br{position:absolute; width:18px; height:18px; border-color:rgba(255,255,255,.24); border-style:solid; border-width:0; opacity:.7}
.br.tl{top:12px; left:12px; border-top-width:1px; border-left-width:1px}
.br.tr{top:12px; right:12px; border-top-width:1px; border-right-width:1px}
.br.bl{bottom:12px; left:12px; border-bottom-width:1px; border-left-width:1px}
.br.br-r{bottom:12px; right:12px; border-bottom-width:1px; border-right-width:1px}
.plus{position:absolute; width:11px; height:11px; opacity:.26}
.plus::before,.plus::after{content:""; position:absolute; background:rgba(255,255,255,.75)}
.plus::before{left:50%; top:0; width:1px; height:100%; transform:translateX(-50%)}
.plus::after{top:50%; left:0; width:100%; height:1px; transform:translateY(-50%)}
.plus.p1{left:10.5%; top:25%}
.plus.p2{right:8.5%; top:34%}
.plus.p3{left:12.5%; bottom:27%}
.plus.p4{right:13%; bottom:21%}
.ring{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  border-radius:50%; pointer-events:none; z-index:1;
}
.ring.r1{height:56%; aspect-ratio:1/1; border:1px solid rgba(255,255,255,.035)}
.ring.r2{height:42%; aspect-ratio:1/1; border:1px dashed rgba(255,90,180,.11); animation:spin 70s linear infinite}

.nucleus{
  position:absolute; left:50%; top:50%; width:6px; height:6px; margin:-3px 0 0 -3px;
  border-radius:50%; z-index:5; pointer-events:none;
  background:#fff;
  box-shadow:
    0 0 10px 2px rgba(255,255,255,.92),
    0 0 26px 8px rgba(255,80,180,.55),
    0 0 64px 22px rgba(255,60,160,.18);
}
.nucleus::after{
  content:""; position:absolute; left:50%; top:50%; width:132px; height:132px;
  transform:translate(-50%,-50%); border-radius:50%;
  background:radial-gradient(circle, rgba(255,150,215,.26), rgba(255,60,160,0) 62%);
  mix-blend-mode:screen;
  animation:breath 5s ease-in-out infinite;
}

.hud{
  position:absolute; z-index:6; pointer-events:none;
  font-family:var(--font-mono); font-size:9px; letter-spacing:.16em; text-transform:uppercase;
  color:rgba(228,212,240,.52);
}
.hud-tl{top:20px; left:38px}
.hud-tr{top:20px; right:38px; text-align:right}
.hud-bl{bottom:18px; left:38px}
.hud-br{bottom:19px; right:38px; color:rgba(198,182,214,.38); font-size:8.5px; letter-spacing:.12em; text-transform:none}
.live{display:flex; align-items:center; gap:7px; color:rgba(255,164,216,.92); font-size:9.5px}
.live .dot{width:5px; height:5px; border-radius:50%; background:#ff4fae; box-shadow:0 0 10px #ff4fae; animation:pulse 2.2s ease-in-out infinite}
.hud-line{margin-top:5px; color:rgba(202,186,216,.42)}
.hud-line b{font-weight:500; color:rgba(240,226,246,.82)}
.hud-line.dim{color:rgba(180,163,196,.36)}
.scalebar{display:flex; flex-direction:column; gap:6px; color:rgba(220,205,235,.5); font-size:8.5px; letter-spacing:.14em; text-transform:none}
.scalebar .bar{display:block; height:6px; width:80px; border-left:1px solid currentColor; border-right:1px solid currentColor; position:relative; transition:width .25s ease}
.scalebar .bar::after{content:""; position:absolute; left:0; right:0; bottom:0; height:1px; background:currentColor}

.stage-orb{
  position:absolute; left:50%; bottom:44px; transform:translateX(-50%);
  z-index:3; pointer-events:none;
  font-family:var(--font-display); font-size:clamp(74px,8vw,128px); line-height:1;
  color:rgba(255,255,255,.055);
  text-shadow:0 0 46px rgba(255,70,170,.14);
  filter:drop-shadow(0 0 16px rgba(255,80,180,.10));
  transition:opacity .5s ease;
}
.stage-orb sub{font-family:var(--font-mono); font-size:.24em; vertical-align:-.18em; color:rgba(255,150,210,.18)}

/* ---------------- panel ---------------- */
.panel{
  display:flex; flex-direction:column; gap:9px;
  min-height:0; overflow-y:auto; overscroll-behavior:contain;
  padding-right:6px; padding-bottom:2px;
  scrollbar-width:thin; scrollbar-color:rgba(255,255,255,.16) transparent;
}
.panel::-webkit-scrollbar{width:6px}
.panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14); border-radius:99px}
.panel::-webkit-scrollbar-track{background:transparent}
.panel > *{flex:0 0 auto; animation:rise .75s cubic-bezier(.2,.8,.2,1) both}
.panel > *:nth-child(1){animation-delay:.06s}
.panel > *:nth-child(2){animation-delay:.12s}
.panel > *:nth-child(3){animation-delay:.18s}
.panel > *:nth-child(4){animation-delay:.24s}
.panel > *:nth-child(5){animation-delay:.3s}

.card{
  position:relative;
  background:linear-gradient(168deg, rgba(28,15,36,.74), rgba(9,5,14,.8));
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 44px rgba(0,0,0,.36), inset 0 1px 0 rgba(255,255,255,.05);
}

/* orbital identity */
.card-orb{
  text-align:center;
  padding:12px 16px 13px;
  overflow:hidden;
  border-color:rgba(255,120,190,.14);
  background:
    radial-gradient(120% 90% at 50% -30%, rgba(255,62,165,.20), transparent 62%),
    linear-gradient(170deg, rgba(52,14,46,.6), rgba(12,6,18,.86) 62%);
}
.card-orb::after{
  content:""; position:absolute; inset:auto 18% -46px; height:100px;
  background:radial-gradient(ellipse at center, rgba(255,62,165,.22), transparent 70%);
  filter:blur(18px); pointer-events:none;
}
.orb-big{
  position:relative; z-index:1;
  font-family:var(--font-display); font-weight:400;
  font-size:clamp(46px,3.9vw,60px); line-height:.98; letter-spacing:.01em;
  color:#fff;
  text-shadow:0 0 26px rgba(255,86,180,.42), 0 0 72px rgba(255,60,165,.20);
}
.orb-big sub{font-family:var(--font-mono); font-size:.26em; vertical-align:-.18em; color:#ff9fd3; letter-spacing:0; margin-left:1px}
.orb-big.swap{animation:orbSwap .55s cubic-bezier(.2,.8,.2,1)}
.orb-en{margin-top:4px; font-family:var(--font-mono); font-size:8px; letter-spacing:.28em; color:#9b8aa8; text-transform:uppercase}
.orb-meta{margin-top:5px; font-size:10.5px; letter-spacing:.05em; color:#b9a8c6}
.qrow{display:flex; justify-content:center; flex-wrap:wrap; gap:6px; margin-top:10px; position:relative; z-index:1}
.qchip{
  display:inline-flex; align-items:center; gap:6px;
  height:28px; padding:0 11px; border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.032);
  font-family:var(--font-mono); font-size:9.5px; color:#a393b0;
}
.qchip i{font-family:var(--font-display); font-style:italic; font-size:12.5px; color:#eedcf3; line-height:1}
.qchip b{font-weight:600; font-size:11px; color:#fff; font-variant-numeric:tabular-nums}
.qchip.flash{animation:chipFlash .65s ease}

/* metrics */
.metrics{
  display:grid; grid-template-columns:1fr 1fr; gap:1px;
  background:rgba(255,255,255,.07);
  border:1px solid var(--line); border-radius:15px; overflow:hidden;
  box-shadow:0 16px 38px rgba(0,0,0,.3);
}
.metric{background:linear-gradient(180deg, #0e0816, #0a0511); padding:9px 12px 10px}
.metric .k{font-size:8.5px; letter-spacing:.13em; color:#7f7189}
.metric .v{margin-top:3px; font-family:var(--font-mono); font-size:18px; line-height:1.12; color:#fff; font-variant-numeric:tabular-nums}
.metric .v .u{margin-left:4px; font-size:9px; color:#9c8dab; letter-spacing:.02em}
.metric .sub{margin-top:3px; font-family:var(--font-mono); font-size:8px; color:#6a5f76; letter-spacing:.01em}
.metric.wide{grid-column:span 2; padding:8px 12px 9px}
.node-row{display:flex; flex-wrap:wrap; gap:4px 16px; margin-top:4px; font-family:var(--font-mono); font-size:9.5px; color:#8d7f99}
.node-row b{color:#fff; font-weight:600; margin-left:4px}

/* chart */
.chart-card{padding:11px 13px 10px}
.card-h{display:flex; align-items:baseline; gap:8px; margin-bottom:6px}
.ch-title{font-size:9.5px; letter-spacing:.16em; color:#cbbdd7}
.ch-formula{font-family:var(--font-mono); font-size:8.5px; color:#8b7c99; letter-spacing:.02em}
.ch-axis{margin-left:auto; font-family:var(--font-mono); font-size:8px; color:#5d5368; letter-spacing:.1em}
#chart{display:block; width:100%; height:100px; border-radius:8px}
.legend{display:flex; flex-wrap:wrap; gap:5px 14px; margin-top:7px; font-family:var(--font-mono); font-size:8.5px; color:#9b8ba8; letter-spacing:.02em}
.legend span{display:inline-flex; align-items:center; gap:6px}
.sw{width:6px; height:6px; border-radius:50%; box-shadow:0 0 8px currentColor}
.sw.pink{background:#ff4fae; color:#ff4fae}
.sw.blue{background:#4fc3ff; color:#4fc3ff}
.legend-note{width:100%; margin-top:1px; color:#5f5569; font-size:7.5px; letter-spacing:.06em}

/* controls */
.controls{padding:12px 13px 13px}
.controls .card-h{margin-bottom:8px}
.field{margin-bottom:7px}
.field-head{display:flex; align-items:baseline; gap:7px; margin-bottom:5px; font-size:9px; letter-spacing:.1em; color:#9688a4}
.field-head .sym{font-family:var(--font-display); font-style:italic; font-size:13.5px; color:#ffbfe2; line-height:1}
.field-head .hint{margin-left:auto; font-family:var(--font-mono); font-size:7.5px; letter-spacing:.12em; color:#5b5165}
.chips{display:flex; flex-wrap:wrap; gap:5px}
.chip{
  position:relative;
  min-width:35px; height:26px; padding:0 9px;
  display:inline-flex; align-items:center; justify-content:center; gap:4px;
  border-radius:8px;
  border:1px solid rgba(255,255,255,.085);
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
  color:#b9aac4; font-family:var(--font-mono); font-size:9.5px;
  cursor:pointer; transition:background .2s, border-color .2s, box-shadow .25s, transform .18s, color .2s;
}
.chip b{font-weight:600; color:inherit}
.chip i{font-style:normal; font-size:7.5px; color:#7d7088; text-transform:uppercase; letter-spacing:0}
.chip:hover{color:#fff; border-color:rgba(255,110,190,.42); background:rgba(255,62,165,.10); transform:translateY(-1px)}
.chip:focus-visible{outline:1px solid rgba(255,120,200,.8); outline-offset:2px}
.chip[aria-pressed="true"]{
  color:#fff;
  border-color:rgba(255,95,185,.62);
  background:linear-gradient(180deg, rgba(255,62,165,.30), rgba(255,62,165,.07));
  box-shadow:0 0 16px rgba(255,62,165,.24), inset 0 0 0 1px rgba(255,120,200,.12);
}
.chip[aria-pressed="true"] i{color:#ffb3dd}
.presets{display:flex; flex-wrap:wrap; gap:5px; margin-top:8px; padding-top:8px; border-top:1px dashed rgba(255,255,255,.075)}
.preset{
  height:22px; padding:0 9px; border-radius:6px;
  border:1px solid rgba(255,255,255,.075); background:rgba(255,255,255,.022);
  color:#9d8fab; font-family:var(--font-mono); font-size:9px; letter-spacing:.04em;
  cursor:pointer; transition:.2s;
}
.preset:hover{color:#fff; border-color:rgba(255,110,190,.42); background:rgba(255,62,165,.11)}
.preset:focus-visible{outline:1px solid rgba(255,120,200,.8); outline-offset:2px}
.actions{display:flex; flex-wrap:wrap; align-items:center; gap:6px; margin-top:9px}
.switch-row{
  display:inline-flex; align-items:center; gap:7px;
  padding:0; margin-right:auto; border:0; background:none;
  font-family:var(--font-mono); font-size:8.5px; letter-spacing:.04em; color:#a899b6;
  cursor:pointer;
}
.switch{
  width:32px; height:18px; border-radius:999px; position:relative;
  background:rgba(255,255,255,.10);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
  transition:.25s;
}
.switch::after{
  content:""; position:absolute; top:2px; left:2px; width:14px; height:14px; border-radius:50%;
  background:#c9bccf; transition:.25s cubic-bezier(.2,.8,.2,1);
}
.switch-row[aria-checked="true"] .switch{background:linear-gradient(90deg, rgba(255,62,165,.5), rgba(255,62,165,.92)); box-shadow:0 0 14px rgba(255,62,165,.4)}
.switch-row[aria-checked="true"] .switch::after{left:16px; background:#fff}
.switch-row:focus-visible{outline:1px solid rgba(255,120,200,.8); outline-offset:3px}
.btn{
  height:29px; padding:0 11px; border-radius:8px;
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  color:#d9cbe2; font-family:var(--font-sans); font-size:10px; letter-spacing:.03em;
  cursor:pointer; transition:.2s;
  display:inline-flex; align-items:center; gap:5px;
}
.btn svg{width:12px; height:12px; opacity:.8}
.btn:hover{color:#fff; border-color:rgba(255,110,190,.4); background:rgba(255,62,165,.12); box-shadow:0 0 16px rgba(255,62,165,.18)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:1px solid rgba(255,120,200,.8); outline-offset:2px}
.btn.primary{
  border-color:rgba(255,95,185,.5);
  background:linear-gradient(180deg, rgba(255,62,165,.30), rgba(255,62,165,.10));
  color:#fff;
}
.btn.primary:hover{background:linear-gradient(180deg, rgba(255,62,165,.44), rgba(255,62,165,.16)); box-shadow:0 0 22px rgba(255,62,165,.28)}

.panel-foot{
  display:flex; justify-content:space-between; gap:10px;
  padding:0 3px 4px;
  font-family:var(--font-mono); font-size:7.5px; letter-spacing:.16em; text-transform:uppercase;
  color:#4d4357;
}

/* ---------------- keyframes ---------------- */
@keyframes rise{from{opacity:0; transform:translateY(12px)} to{opacity:1; transform:none}}
@keyframes stageIn{from{opacity:0; transform:scale(.988)} to{opacity:1; transform:none}}
@keyframes pulse{0%,100%{opacity:1; transform:scale(1)} 50%{opacity:.28; transform:scale(.7)}}
@keyframes breath{0%,100%{opacity:.62; transform:translate(-50%,-50%) scale(1)} 50%{opacity:1; transform:translate(-50%,-50%) scale(1.16)}}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes scan{from{top:-180px} to{top:100%}}
@keyframes orbSwap{from{opacity:0; filter:blur(12px); transform:translateY(7px) scale(.965)} to{opacity:1; filter:blur(0); transform:none}}
@keyframes chipFlash{0%{box-shadow:0 0 0 rgba(255,62,165,0)} 25%{box-shadow:0 0 22px rgba(255,62,165,.5); border-color:rgba(255,140,210,.8)} 100%{box-shadow:0 0 0 rgba(255,62,165,0)}}

/* ---------------- responsive ---------------- */
@media (max-width:1180px){
  .topbar{grid-template-columns:1fr auto 1fr; gap:12px; padding:16px 20px 13px}
  .topbar::after{left:20px; right:20px}
  .layout{padding:12px 14px 14px; grid-template-columns:minmax(0,1fr) clamp(330px,31vw,390px)}
  .tb-side{font-size:7.5px; letter-spacing:.16em}
}
@media (max-width:940px){
  body{overflow:auto}
  .app{height:auto; min-height:100dvh}
  .topbar{grid-template-columns:1fr; padding:15px 16px 12px; gap:0}
  .topbar::after{left:16px; right:16px}
  .tb-side{display:none}
  .topbar h1{font-size:19px; letter-spacing:.24em; text-indent:.24em}
  .tb-subline{font-size:7.5px; letter-spacing:.18em; gap:8px}
  .layout{grid-template-columns:1fr; padding:10px 12px 20px; gap:12px}
  .stage{height:54vh; min-height:350px; max-height:600px; border-radius:16px}
  .panel{overflow:visible; padding-right:0}
  .panel-foot{padding-bottom:10px}
  .hud-br{display:none}
  .stage-orb{font-size:88px; bottom:36px}
  .plus.p1,.plus.p4{display:none}
}
@media (max-width:420px){
  .orb-big{font-size:44px}
  .legend{gap:4px 10px}
  .btn{padding:0 9px; font-size:9.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important}
}