/* ============ HOTSCREEN V2 — Design System ============ */
:root{
  --bg:#080B10; --surface:#121821; --surface2:#19232E;
  --cyan:#30D8E6; --red:#D74C5B; --green:#33CB99; --amber:#F3B35D;
  --text:#E8EDF3; --muted:#8C98A8; --muted-strong:#A9B6C6;
  --border:rgba(232,237,243,.09); --border2:rgba(232,237,243,.16);
  --glow-cyan:0 0 24px rgba(48,216,230,.18);
  --radius:10px; --radius-s:6px;
  --font-ui:'Inter',-apple-system,'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,Menlo,Consolas,'Noto Sans SC',monospace;
  --topbar-h:56px; --sidebar-w:228px;
}
[data-theme="light"]{
  --bg:#F2F5F8; --surface:#FFFFFF; --surface2:#E9EFF5;
  --text:#10161F; --muted:#5A6B7E; --muted-strong:#43536A;
  --border:rgba(16,22,31,.10); --border2:rgba(16,22,31,.18);
  --glow-cyan:0 0 24px rgba(48,216,230,.25);
}
*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{ background:var(--bg); color:var(--text); font-family:var(--font-ui);
  font-size:15px; line-height:1.65; -webkit-font-smoothing:antialiased; }
::selection{ background:rgba(48,216,230,.28); }
a{ color:var(--cyan); text-decoration:none; }
a:hover{ text-decoration:underline; }
.mono{ font-family:var(--font-mono); }
.muted{ color:var(--muted); }
.hidden{ display:none !important; }

/* ---------- buttons ---------- */
.btn{ display:inline-flex; align-items:center; gap:8px; padding:11px 22px; border-radius:8px;
  border:1px solid var(--border2); background:var(--surface2); color:var(--text);
  font-family:var(--font-ui); font-size:14px; font-weight:600; cursor:pointer;
  transition:transform .15s, box-shadow .2s, background .2s; text-decoration:none !important; }
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--cyan); border-color:var(--cyan); color:#04262b; box-shadow:var(--glow-cyan); }
.btn-primary:hover{ box-shadow:0 0 34px rgba(48,216,230,.35); }
.btn-ghost{ background:transparent; }
.btn-danger{ border-color:rgba(215,76,91,.5); color:var(--red); background:transparent; }
.btn-sm{ padding:7px 14px; font-size:12.5px; }
.btn:disabled{ opacity:.45; cursor:not-allowed; transform:none; }

/* ---------- badges / tags ---------- */
.badge{ display:inline-flex; align-items:center; gap:6px; padding:3px 10px; border-radius:999px;
  font-size:11px; font-weight:600; letter-spacing:.08em; border:1px solid var(--border2);
  font-family:var(--font-mono); text-transform:uppercase; }
.badge-demo{ border-color:rgba(243,179,93,.55); color:var(--amber); background:rgba(243,179,93,.08); }
.badge-live{ border-color:rgba(51,203,153,.5); color:var(--green); background:rgba(51,203,153,.08); }
.badge-cyan{ border-color:rgba(48,216,230,.5); color:var(--cyan); background:rgba(48,216,230,.07); }
.badge-red{ border-color:rgba(215,76,91,.5); color:var(--red); background:rgba(215,76,91,.08); }
.badge .dot{ width:6px; height:6px; border-radius:50%; background:currentColor; }

/* ---------- marketing layout ---------- */
.mnav{ position:fixed; top:0; left:0; right:0; z-index:60; height:64px;
  display:flex; align-items:center; justify-content:space-between; padding:0 4vw;
  background:rgba(8,11,16,.78); backdrop-filter:blur(14px); border-bottom:1px solid var(--border); }
[data-theme="light"] .mnav{ background:rgba(242,245,248,.82); }
.logo{ display:flex; align-items:center; gap:10px; font-weight:800; letter-spacing:.14em;
  font-size:15px; color:var(--text); text-decoration:none !important; }
.logo .mark{ width:26px; height:26px; border-radius:7px;
  background:conic-gradient(from 40deg, var(--cyan), #1a7f8a, var(--cyan));
  box-shadow:var(--glow-cyan); position:relative; }
.logo .mark::after{ content:""; position:absolute; inset:8px; border-radius:4px; background:var(--bg); }
.logo .synlogo{ width:26px; height:26px; flex:none; display:block; }
.logo .bname{ white-space:nowrap; }
.mnav .links{ display:flex; gap:26px; align-items:center; }
.mnav .links a{ color:var(--muted); font-size:13.5px; font-weight:500; text-decoration:none !important; }
.mnav .links a:hover{ color:var(--text); }
.mnav .cta-row{ display:flex; gap:10px; }
@media(max-width:900px){ .mnav .links{ display:none; } }

.mhero{ min-height:100vh; display:grid; grid-template-columns:1.05fr .95fr; gap:4vw;
  align-items:center; padding:92px 6vw 64px; position:relative; overflow:hidden; }
.mhero::before{ content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 60% 50% at 70% 30%, rgba(48,216,230,.07), transparent 70%); }
.mhero h1{ font-size:clamp(40px,5.6vw,76px); line-height:1.06; font-weight:800; letter-spacing:-.02em; }
.mhero h1 .cy{ color:var(--cyan); }
.mhero .sub{ margin:22px 0 34px; color:var(--muted); font-size:clamp(15px,1.6vw,18px); max-width:34em; }
.mhero .cta-row{ display:flex; gap:14px; flex-wrap:wrap; }
.mhero .meta{ margin-top:26px; display:flex; gap:10px; flex-wrap:wrap; }
@media(max-width:900px){ .mhero{ grid-template-columns:1fr; padding-top:110px; } }

/* hero console mock */
.console{ border:1px solid var(--border2); border-radius:14px; background:var(--surface);
  box-shadow:0 30px 80px rgba(0,0,0,.45); overflow:hidden; position:relative; }
.console .cbar{ display:flex; gap:8px; align-items:center; padding:12px 16px; border-bottom:1px solid var(--border); }
.console .cbar i{ width:10px; height:10px; border-radius:50%; background:var(--border2); }
.console .cbar i:first-child{ background:var(--red); } .console .cbar i:nth-child(2){ background:var(--amber); }
.console .cbar i:nth-child(3){ background:var(--green); }
.console .cbar .t{ margin-left:8px; font-family:var(--font-mono); font-size:11px; color:var(--muted); }
.console .cbody{ padding:18px; font-family:var(--font-mono); font-size:12.5px; }
.scanwrap{ position:relative; height:150px; border:1px solid var(--border); border-radius:8px;
  background:linear-gradient(135deg,#0b1220,#101a2b); overflow:hidden; margin-bottom:14px; }
.scanwrap .grid{ position:absolute; inset:0;
  background-image:linear-gradient(rgba(48,216,230,.06) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(48,216,230,.06) 1px, transparent 1px);
  background-size:22px 22px; }
.scanwrap .zone{ position:absolute; border:1px dashed rgba(48,216,230,.55); border-radius:6px;
  color:var(--cyan); font-size:10px; padding:3px 8px; background:rgba(48,216,230,.06); }
.scanwrap .beam{ position:absolute; left:0; right:0; height:2px; top:0;
  background:var(--cyan); box-shadow:0 0 18px var(--cyan); animation:beam 3.2s ease-in-out infinite; }
@keyframes beam{ 0%,100%{ top:4%; } 50%{ top:94%; } }
.kv{ display:flex; justify-content:space-between; padding:7px 2px; border-bottom:1px dashed var(--border); }
.kv:last-child{ border-bottom:none; }
.kv .k{ color:var(--muted-strong); } .kv .v{ color:var(--text); font-weight:600; }
.v .ok{ color:var(--green); } .v .warn{ color:var(--amber); }
/* hero console live status */
.statusline{ display:flex; align-items:center; gap:10px; font-family:var(--font-mono);
  font-size:11.5px; color:var(--muted-strong); margin-bottom:10px; }
.statusline .sp{ flex:1; }
.pulse{ width:8px; height:8px; border-radius:50%; background:var(--green); flex-shrink:0;
  box-shadow:0 0 10px var(--green); animation:pulse 2.2s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{ opacity:1; transform:scale(1); } 50%{ opacity:.45; transform:scale(.78); } }
.lvlbar{ height:5px; border-radius:99px; background:var(--surface2); overflow:hidden; margin-bottom:14px; }
.lvlbar i{ display:block; height:100%; border-radius:99px;
  background:linear-gradient(90deg, var(--cyan), #1a9fb0); transition:width 1.2s ease; }

.msection{ padding:90px 6vw; max-width:1240px; margin:0 auto; }
.msection .kick{ font-family:var(--font-mono); font-size:12px; letter-spacing:.3em;
  color:var(--cyan); text-transform:uppercase; margin-bottom:14px; }
.msection h2{ font-size:clamp(28px,3.4vw,44px); font-weight:800; letter-spacing:-.01em; margin-bottom:12px; }
.msection .lede{ color:var(--muted); max-width:56em; margin-bottom:44px; }
.cards{ display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:18px; }
.card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:26px; transition:transform .2s, border-color .2s, box-shadow .25s; }
.card:hover{ transform:translateY(-4px); border-color:var(--border2); box-shadow:0 18px 50px rgba(0,0,0,.35); }
.card .ic{ width:40px; height:40px; border-radius:10px; display:flex; align-items:center; justify-content:center;
  background:rgba(48,216,230,.1); border:1px solid rgba(48,216,230,.3); margin-bottom:16px;
  font-family:var(--font-mono); color:var(--cyan); font-weight:700; }
.card h3{ font-size:17px; margin-bottom:8px; }
.card p{ color:var(--muted); font-size:13.5px; }

/* flow diagram */
.flow{ display:flex; align-items:stretch; gap:0; flex-wrap:wrap; }
.fstep{ flex:1 1 150px; background:var(--surface); border:1px solid var(--border2); border-radius:var(--radius);
  padding:20px 16px; text-align:center; position:relative; }
.fstep .n{ font-family:var(--font-mono); color:var(--cyan); font-size:11px; letter-spacing:.2em; }
.fstep h4{ margin:8px 0 6px; font-size:15px; }
.fstep p{ color:var(--muted); font-size:12.5px; }
.farrow{ align-self:center; padding:0 10px; color:var(--cyan); font-size:22px; font-family:var(--font-mono); }
@media(max-width:700px){ .farrow{ display:none; } .fstep{ margin-bottom:10px; } }

/* showcase preview */
.showcase{ display:grid; grid-template-columns:1fr 1fr; gap:26px; align-items:start; }
@media(max-width:900px){ .showcase{ grid-template-columns:1fr; } }
.preview-box{ background:var(--surface); border:1px solid var(--border2); border-radius:var(--radius);
  padding:18px; }
.preview-box canvas{ width:100%; border-radius:8px; display:block; background:#0a0f16; }
.ctl-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top:14px; align-items:center; }
.seg{ display:flex; border:1px solid var(--border2); border-radius:8px; overflow:hidden; }
.seg button{ background:transparent; border:none; color:var(--muted); padding:9px 16px;
  font-family:var(--font-ui); font-size:13px; font-weight:600; cursor:pointer; }
.seg button.on{ background:rgba(48,216,230,.14); color:var(--cyan); }
input[type=range]{ accent-color:var(--cyan); width:160px; }
.field{ display:flex; flex-direction:column; gap:6px; margin:12px 0; }
.field label{ font-size:12px; color:var(--muted); font-family:var(--font-mono); letter-spacing:.06em; }
.field .row{ display:flex; align-items:center; gap:12px; }
.field output{ font-family:var(--font-mono); font-size:12.5px; color:var(--cyan); min-width:44px; }

/* roadmap */
.rm-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:18px; }
.rm-col h4{ font-family:var(--font-mono); font-size:12px; letter-spacing:.25em; margin-bottom:14px;
  padding-bottom:10px; border-bottom:1px solid var(--border2); }
.rm-col.done h4{ color:var(--green); } .rm-col.prog h4{ color:var(--amber); } .rm-col.plan h4{ color:var(--muted); }
.rm-item{ background:var(--surface); border:1px solid var(--border); border-radius:8px;
  padding:14px 16px; margin-bottom:10px; font-size:13.5px; }
.rm-item .tag{ font-family:var(--font-mono); font-size:10.5px; color:var(--muted); display:block; margin-top:6px; }

/* faq */
details.faq{ background:var(--surface); border:1px solid var(--border); border-radius:8px;
  margin-bottom:10px; padding:0; }
details.faq summary{ padding:16px 20px; cursor:pointer; font-weight:600; list-style:none; }
details.faq summary::-webkit-details-marker{ display:none; }
details.faq summary::before{ content:"+ "; color:var(--cyan); font-family:var(--font-mono); }
details.faq[open] summary::before{ content:"– "; }
details.faq .a{ padding:0 20px 18px; color:var(--muted); font-size:14px; }

.mfooter{ border-top:1px solid var(--border); padding:50px 6vw 34px; color:var(--muted); font-size:13px; }
.mfooter .cols{ display:flex; justify-content:space-between; gap:30px; flex-wrap:wrap;
  max-width:1240px; margin:0 auto 30px; }
.mfooter .base{ max-width:1240px; margin:0 auto; padding-top:22px; border-top:1px solid var(--border);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-family:var(--font-mono); font-size:11.5px; }

/* ---------- app shell ---------- */
.app{ display:flex; min-height:100vh; }
.sidebar{ width:var(--sidebar-w); flex-shrink:0; background:var(--surface);
  border-right:1px solid var(--border); display:flex; flex-direction:column;
  position:sticky; top:0; height:100vh; }
.sidebar .slogo{ padding:18px 20px; border-bottom:1px solid var(--border); }
.snav{ padding:12px; display:flex; flex-direction:column; gap:2px; overflow-y:auto; flex:1; }
.snav .grp{ font-family:var(--font-mono); font-size:10px; letter-spacing:.22em; color:var(--muted);
  padding:12px 10px 6px; text-transform:uppercase; }
.snav a{ display:flex; align-items:center; gap:10px; padding:9px 12px; border-radius:8px;
  color:var(--muted); font-size:13.5px; font-weight:500; text-decoration:none !important; }
.snav a:hover{ background:var(--surface2); color:var(--text); }
.snav a.on{ background:rgba(48,216,230,.1); color:var(--cyan); }
.snav a .di{ font-family:var(--font-mono); font-size:11px; width:20px; text-align:center; opacity:.8; }
.sfoot{ padding:14px 20px; border-top:1px solid var(--border); font-family:var(--font-mono);
  font-size:10.5px; color:var(--muted); }
.main{ flex:1; min-width:0; display:flex; flex-direction:column; }
.topbar{ height:var(--topbar-h); display:flex; align-items:center; gap:14px; padding:0 22px;
  border-bottom:1px solid var(--border); background:var(--surface); position:sticky; top:0; z-index:40; }
.topbar .ttl{ font-weight:700; font-size:15px; }
.topbar .sp{ flex:1; }
.topbar .tstat{ font-family:var(--font-mono); font-size:12px; color:var(--muted);
  display:flex; gap:6px; align-items:center; }
.topbar .tstat b{ color:var(--text); }
.iconbtn{ width:34px; height:34px; border-radius:8px; border:1px solid var(--border2);
  background:transparent; color:var(--muted); cursor:pointer; font-size:15px;
  display:inline-flex; align-items:center; justify-content:center; }
.iconbtn:hover{ color:var(--text); border-color:var(--cyan); }
.workspace{ padding:26px; max-width:1280px; width:100%; margin:0 auto; }
.pagehead{ display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
  margin-bottom:22px; flex-wrap:wrap; }
.pagehead h2{ font-size:24px; font-weight:800; letter-spacing:-.01em; }
.pagehead p{ color:var(--muted); font-size:13.5px; margin-top:4px; max-width:60em; }
.panel{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:20px; margin-bottom:18px; }
.panel > h3{ font-size:14px; font-weight:700; margin-bottom:4px; }
.panel > .psub{ color:var(--muted); font-size:12.5px; margin-bottom:16px; }
.grid2{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.grid3{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.grid4{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
@media(max-width:1100px){ .grid4{ grid-template-columns:repeat(2,1fr); } .grid3{ grid-template-columns:1fr 1fr; } }
@media(max-width:900px){
  .sidebar{ display:none; }
  .pagenav{ display:inline-block !important; }
  .topbar .tstat{ display:none; }
}
.pagenav{ display:none; max-width:150px; }
@media(max-width:760px){ .grid2,.grid3,.grid4{ grid-template-columns:1fr; }
  .workspace{ padding:16px; } }

.stat{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:18px; }
.stat .k{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.18em; color:var(--muted);
  text-transform:uppercase; margin-bottom:8px; }
.stat .v{ font-size:26px; font-weight:800; font-family:var(--font-mono); }
.stat .v small{ font-size:13px; color:var(--muted); font-weight:400; }
.stat .d{ font-size:12.5px; color:var(--muted-strong); margin-top:6px; }
.stat .v.cy{ color:var(--cyan); } .stat .v.gr{ color:var(--green); }
.stat .v.rd{ color:var(--red); } .stat .v.am{ color:var(--amber); }

table.tbl{ width:100%; border-collapse:collapse; font-size:13.5px; }
.tbl th{ text-align:left; font-family:var(--font-mono); font-size:10.5px; letter-spacing:.14em;
  color:var(--muted); text-transform:uppercase; padding:10px 12px; border-bottom:1px solid var(--border2); }
.tbl td{ padding:11px 12px; border-bottom:1px solid var(--border); }
.tbl tr:last-child td{ border-bottom:none; }
.tbl tr:hover td{ background:rgba(48,216,230,.03); }

.toggle{ position:relative; width:40px; height:22px; border-radius:999px; border:1px solid var(--border2);
  background:var(--surface2); cursor:pointer; transition:background .2s; flex-shrink:0; }
.toggle::after{ content:""; position:absolute; top:2px; left:2px; width:16px; height:16px;
  border-radius:50%; background:var(--muted); transition:left .2s, background .2s; }
.toggle.on{ background:rgba(48,216,230,.25); border-color:var(--cyan); }
.toggle.on::after{ left:20px; background:var(--cyan); }
.trow{ display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 0;
  border-bottom:1px dashed var(--border); }
.trow:last-child{ border-bottom:none; }
.trow .tl{ font-size:13.5px; } .trow .tl small{ display:block; color:var(--muted-strong); font-size:11.5px; }
/* dashboard event timeline */
.event{ display:flex; gap:12px; padding:10px 14px; border-left:2px solid var(--border2);
  margin-bottom:8px; background:var(--surface2); border-radius:0 8px 8px 0; font-size:13px; }
.event:last-child{ margin-bottom:0; }
.event .ets{ color:var(--muted); font-size:11px; flex-shrink:0; padding-top:3px; }
.event.inf{ border-left-color:var(--cyan); } .event.ok{ border-left-color:var(--green); }
.event.warn{ border-left-color:var(--amber); } .event.err{ border-left-color:var(--red); }

select.sel, input.inp{ background:var(--surface2); border:1px solid var(--border2); color:var(--text);
  border-radius:8px; padding:9px 12px; font-family:var(--font-ui); font-size:13.5px; }
select.sel:focus, input.inp:focus{ outline:none; border-color:var(--cyan); }

.log{ font-family:var(--font-mono); font-size:12px; background:#05080d; border:1px solid var(--border);
  border-radius:8px; padding:14px 16px; max-height:320px; overflow-y:auto; }
[data-theme="light"] .log{ background:#0b1220; }
.log .ln{ padding:3px 0; border-bottom:1px dashed rgba(255,255,255,.05); color:#9fb3c8; }
.log .ln:last-child{ border-bottom:none; }
.log .ts{ color:#54687e; margin-right:10px; }
.log .ok{ color:var(--green); } .log .warn{ color:var(--amber); } .log .err{ color:var(--red); }
.log .inf{ color:var(--cyan); }
/* demo feedback: current preview vs simulated policy */
.dsec{ margin-bottom:14px; } .dsec:last-child{ margin-bottom:0; }
.dsec-t{ font-size:11px; letter-spacing:.14em; font-weight:700; color:var(--cyan); margin-bottom:6px; text-transform:uppercase; }
.prow{ display:flex; justify-content:space-between; gap:10px; padding:3px 0; font-size:12.5px; }
.prow .k{ color:var(--muted); } .prow .v{ font-family:var(--font-mono); }

/* effect stack */
.stack{ display:flex; flex-direction:column; gap:8px; }
.fxitem{ display:flex; align-items:center; gap:12px; background:var(--surface2);
  border:1px solid var(--border2); border-radius:8px; padding:10px 14px; cursor:grab; }
.fxitem.dragging{ opacity:.4; }
.fxitem .grip{ color:var(--muted); font-family:var(--font-mono); cursor:grab; }
.fxitem .nm{ font-weight:600; font-size:13.5px; flex:1; }
.fxitem .ord{ font-family:var(--font-mono); font-size:11px; color:var(--cyan);
  border:1px solid rgba(48,216,230,.4); border-radius:6px; padding:2px 8px; }
.libitem{ display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:12px 4px; border-bottom:1px dashed var(--border); }
.libitem:last-child{ border-bottom:none; }

/* body diagram */
.bodywrap{ display:grid; grid-template-columns:280px 1fr; gap:22px; align-items:start; }
@media(max-width:900px){ .bodywrap{ grid-template-columns:1fr; } }
.bodysvg{ background:var(--surface); border:1px solid var(--border2); border-radius:var(--radius);
  padding:18px; }
.bodysvg svg{ width:100%; height:auto; display:block; }
.zone{ fill:rgba(48,216,230,.06); stroke-width:1.5; cursor:pointer;
  transition:fill .2s, stroke .2s, filter .2s; }
.zone.z-clear{ stroke:rgba(51,203,153,.5); }
.zone.z-monitored{ stroke:rgba(243,179,93,.55); }
.zone.z-filtered{ stroke:rgba(48,216,230,.45); }
.zone:hover{ fill:rgba(48,216,230,.18); }
.zone:focus{ outline:none; }
.zone:focus-visible{ stroke:var(--text); stroke-width:2.5; }
.zone.sel{ fill:rgba(48,216,230,.28); stroke:var(--cyan); stroke-width:2.5;
  filter:drop-shadow(0 0 10px rgba(48,216,230,.55)); }
.zlabel{ font-family:var(--font-mono); font-size:9px; fill:var(--muted-strong);
  letter-spacing:.08em; pointer-events:none; }
.zone.sel + .zlabel{ fill:var(--cyan); }
/* studio parameter groups */
.pgroup{ border:1px solid var(--border); border-radius:8px; padding:12px 14px; margin-bottom:10px; }
.pgroup:last-child{ margin-bottom:0; }
.pgname{ font-family:var(--font-mono); font-size:11px; letter-spacing:.14em; color:var(--cyan); margin-bottom:4px; }
.pgroup .field{ margin:8px 0 2px; }

/* level roadmap */
.levels{ display:flex; gap:8px; flex-wrap:wrap; margin:16px 0; }
.lvl{ width:52px; height:64px; border-radius:8px; border:1px solid var(--border2);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  font-family:var(--font-mono); cursor:pointer; background:var(--surface2); }
.lvl b{ font-size:16px; } .lvl small{ font-size:9px; color:var(--muted); }
.lvl.cur{ border-color:var(--cyan); box-shadow:var(--glow-cyan); }
.lvl.cur b{ color:var(--cyan); }
.lvl.done{ border-color:rgba(51,203,153,.4); } .lvl.done b{ color:var(--green); }

/* toast + modal */
#toasts{ position:fixed; bottom:22px; right:22px; z-index:200; display:flex;
  flex-direction:column; gap:10px; max-width:min(360px,90vw); }
.toast{ background:var(--surface2); border:1px solid var(--border2); border-left:3px solid var(--cyan);
  border-radius:8px; padding:12px 16px; font-size:13.5px; box-shadow:0 14px 40px rgba(0,0,0,.4);
  animation:tin .25s ease; }
.toast.ok{ border-left-color:var(--green); } .toast.warn{ border-left-color:var(--amber); }
.toast.err{ border-left-color:var(--red); }
@keyframes tin{ from{ transform:translateX(30px); opacity:0; } }
.mback{ position:fixed; inset:0; z-index:190; background:rgba(0,0,0,.6); backdrop-filter:blur(3px);
  display:flex; align-items:center; justify-content:center; padding:20px; }
.modal{ background:var(--surface); border:1px solid var(--border2); border-radius:12px;
  padding:26px; max-width:440px; width:100%; box-shadow:0 30px 80px rgba(0,0,0,.5); }
.modal h3{ margin-bottom:10px; } .modal p{ color:var(--muted); font-size:13.5px; margin-bottom:20px; }
.modal .mrow{ display:flex; gap:10px; justify-content:flex-end; }

/* demo page */
.demo-head{ text-align:center; padding:110px 6vw 30px; max-width:900px; margin:0 auto; }
.demo-head h1{ font-size:clamp(30px,4vw,52px); font-weight:800; }
.demo-grid{ display:grid; grid-template-columns:1fr 340px; gap:22px; max-width:1240px;
  margin:0 auto; padding:20px 6vw 90px; align-items:start; }
@media(max-width:960px){ .demo-grid{ grid-template-columns:1fr; } }
.compare{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.compare figure{ margin:0; } .compare figcaption{ font-family:var(--font-mono); font-size:11px;
  color:var(--muted); margin-top:8px; letter-spacing:.1em; }
.compare canvas{ width:100%; border-radius:8px; display:block; background:#0a0f16;
  border:1px solid var(--border2); }

/* language switcher */
.langsw{ display:inline-flex; align-items:center; gap:7px; border:1px solid var(--border2);
  border-radius:999px; padding:5px 12px; font-size:12.5px; white-space:nowrap; }
.langsw .globe{ font-size:13px; line-height:1; }
.langsw .sep{ color:var(--muted); }
.ls-btn{ background:none; border:none; color:var(--muted); font-family:var(--font-ui);
  font-size:12.5px; font-weight:600; cursor:pointer; padding:2px 4px; border-radius:4px; }
.ls-btn:hover{ color:var(--text); }
.ls-btn.on{ color:var(--cyan); }
@media(max-width:760px){
  .topbar{ flex-wrap:wrap; row-gap:8px; padding-bottom:10px; }
  .topbar .tstat{ display:none; }
  .topbar{ gap:8px; padding-left:12px; padding-right:12px; }
  .topbar .ttl{ font-size:13px; }
  .topbar .langsw{ order:8; flex:1 1 40%; justify-content:center; }
  .topbar .pagenav{ order:9; flex:1 1 40%; max-width:none; }
  .mnav .cta-row .btn{ display:none; }
  .mnav .cta-row .langsw{ display:inline-flex; }
}

/* misc */
.hr{ border:none; border-top:1px solid var(--border); margin:26px 0; }
.progress{ height:8px; border-radius:999px; background:var(--surface2); overflow:hidden; }
.progress i{ display:block; height:100%; border-radius:999px;
  background:linear-gradient(90deg, var(--cyan), #1a9fb0); transition:width .5s ease; }
.mt8{ margin-top:8px; } .mt16{ margin-top:16px; } .mb16{ margin-bottom:16px; }
.flex{ display:flex; } .gap8{ gap:8px; } .gap12{ gap:12px; } .wrap{ flex-wrap:wrap; }
.center{ text-align:center; }
.hud-corner{ position:relative; }
.hud-corner::before,.hud-corner::after{ content:""; position:absolute; width:14px; height:14px;
  border:1px solid rgba(48,216,230,.5); }
.hud-corner::before{ top:-1px; left:-1px; border-right:none; border-bottom:none; }
.hud-corner::after{ bottom:-1px; right:-1px; border-left:none; border-top:none; }

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration:.001s !important; transition-duration:.001s !important; }
  html{ scroll-behavior:auto; }
}