:root{
  --bg:#0b1020;
  --panel:#111a31;
  --panel-2:#182440;
  --text:#f4f7fb;
  --muted:#aab6d3;
  --accent:#f2b84b;
  --accent-2:#7dd3fc;
  --scanner-board-size:clamp(260px, 30vw, 500px);
}
*,
*::before,
*::after{
  box-sizing:border-box;
}
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(125,211,252,.18), transparent 28%),
    radial-gradient(circle at top right, rgba(242,184,75,.16), transparent 30%),
    linear-gradient(180deg, #09101f 0%, #0b1224 100%);
}
a{color:inherit}
.site-header{position:sticky;top:0;z-index:10;backdrop-filter:blur(16px);background:rgba(8,12,22,.72);border-bottom:1px solid rgba(255,255,255,.08)}
.site-header-shell{display:flex;align-items:center;justify-content:flex-start;gap:1rem;flex-wrap:wrap;min-width:0}
.brand{font-size:1.15rem;font-weight:800;letter-spacing:.04em;text-decoration:none;display:inline-flex;align-items:center;gap:.7rem}
.brand-icon{width:30px;height:30px;display:block;flex:0 0 auto}
.top-nav{display:flex;gap:1rem;flex-wrap:wrap}
.top-nav a,.breadcrumbs a{text-decoration:none;color:var(--muted)}
.top-nav a{
  padding:.55rem .8rem;
  border-radius:999px;
  border:1px solid transparent;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.top-nav a:hover{
  color:var(--text);
  border-color:rgba(255,255,255,.08);
  background:rgba(255,255,255,.04);
}
.site-nav-desktop{margin-left:auto}
.site-nav-toggle{display:none}
.site-nav-toggle summary{list-style:none}
.site-nav-toggle summary::-webkit-details-marker{display:none}
.site-nav-toggle-button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  min-width:44px;
  padding:.65rem;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, rgba(17,26,49,.98), rgba(11,18,38,.98));
  color:var(--text);
  cursor:pointer;
  user-select:none;
}
.site-nav-toggle-icon{
  width:14px;
  height:14px;
  position:relative;
  display:inline-block;
}
.site-nav-toggle-icon::before,
.site-nav-toggle-icon::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  border-radius:999px;
  background:currentColor;
  transition:transform .18s ease,top .18s ease,opacity .18s ease;
}
.site-nav-toggle-icon::before{top:4px}
.site-nav-toggle-icon::after{top:10px}
.site-nav-toggle[open] .site-nav-toggle-icon::before{top:7px;transform:rotate(45deg)}
.site-nav-toggle[open] .site-nav-toggle-icon::after{top:7px;transform:rotate(-45deg)}
.site-nav-mobile-panel{display:grid;gap:.75rem}
.site-nav-toggle[open] .site-nav-mobile-panel{
  width:100%;
  margin-top:0;
  padding:.75rem;
  border-radius:0;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(10,16,30,.96);
  box-shadow:0 20px 40px rgba(0,0,0,.28);
}
.site-nav-toggle[open] .top-nav{
  display:grid;
  grid-template-columns:1fr;
}
.language-picker-mobile{
  display:none;
  width:100%;
}
.language-picker-mobile select{
  width:100%;
}
.language-picker{
  display:inline-flex;
  align-items:center;
  margin-left:auto;
}
.language-picker select{
  min-height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.12);
  background:#0b1326;
  color:var(--text);
  padding:.45rem .7rem;
}
@media (min-width: 992px){
  .site-nav-toggle{display:none}
  .site-nav-desktop{
    display:flex;
    flex:0 0 100%;
    max-width:860px;
    margin:.15rem auto 0;
  }
}
@media (max-width: 991.98px){
  .site-nav-desktop{display:none}
  .site-header-shell{
    position:relative;
    align-items:flex-start;
  }
  .site-nav-toggle{
    display:block;
    order:2;
    margin-left:auto;
    flex:0 0 auto;
    width:auto;
  }
  .site-nav-toggle[open]{
    display:block;
    flex:0 0 auto;
    width:auto;
    margin-left:auto;
  }
  .site-nav-toggle-button{
    margin-left:0;
  }
  .site-nav-toggle[open] .site-nav-mobile-panel{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    width:auto;
  }
  .site-header-shell:has(.site-nav-toggle[open]){
    padding-bottom:15.5rem;
  }
  .language-picker-mobile{
    display:inline-flex;
  }
  .language-picker{
    margin-left:0;
    order:4;
    width:100%;
  }
  .language-picker select{
    width:100%;
  }
  .site-header-shell > .language-picker:not(.language-picker-mobile){
    display:none;
  }
  .page-card,
  .calculator-console,
  .calculator-article-card,
  .narrow-page-card,
  .breadcrumbs{
    max-width:100%;
  }
}
.hero,.page-card,.tool-card{border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg, rgba(17,26,49,.94), rgba(12,18,34,.94));box-shadow:0 24px 60px rgba(0,0,0,.24)}
.hero{border-radius:28px;padding:2rem;display:grid;grid-template-columns:1.45fr .8fr;gap:1.25rem}
.hero h1{font-size:clamp(2rem,5vw,4rem);line-height:1.02;margin:.2rem 0 1rem}
.lead,.muted{color:var(--muted)}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap}
.hero-panel{display:grid;gap:.85rem;align-content:center}
.stat{padding:1rem;border-radius:18px;background:rgba(255,255,255,.04);display:flex;flex-direction:column}
.stat strong{font-size:1.6rem}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1rem}
.tool-card,.page-card{border-radius:22px;padding:1.25rem;min-width:0}
.tool-card{text-decoration:none;transition:transform .18s ease,border-color .18s ease}
.tool-card:hover{transform:translateY(-3px);border-color:rgba(242,184,75,.5)}
.breadcrumbs{
  display:flex;
  gap:.45rem;
  align-items:center;
  color:#d6e2ff;
  font-size:.9rem;
  max-width:860px;
  margin:0 auto 1rem;
}
.breadcrumbs a{
  color:#eef4ff;
}
.tool-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.compact-tool-form{max-width:720px}
.tool-form label{display:grid;gap:.35rem;color:var(--muted);min-width:0}
.tool-form input,.tool-form select,.form-control{
  width:100%;
  max-width:100%;
  border-radius:14px;border:1px solid rgba(255,255,255,.12);background:#0b1326;color:var(--text);padding:.8rem .9rem
}
.form-actions{display:flex;align-items:end}
.calculator-card{text-align:center}
.calculator-card .muted{max-width:720px;margin-left:auto;margin-right:auto}
.calculator-card .compact-tool-form{margin-left:auto;margin-right:auto}
.calculator-card .form-actions{justify-content:center}
.calculator-console{text-align:left}
.calculator-console{
  max-width:860px;
  margin-left:auto;
  margin-right:auto;
}
.calculator-console-shell{display:grid;gap:1.25rem;max-width:none;margin:0 auto}
.calculator-console-copy{text-align:center}
.calculator-console-copy .muted{max-width:760px}
.calculator-console-panel{
  border-radius:28px;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(180deg, rgba(57,64,82,.96), rgba(28,35,53,.98));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.08),
    inset 0 -2px 0 rgba(0,0,0,.24),
    0 24px 60px rgba(0,0,0,.34);
  padding:1.2rem;
  display:grid;
  gap:1rem;
  min-width:0;
}
.calculator-display{
  border-radius:14px;
  border:1px solid rgba(32,56,43,.7);
  background:
    linear-gradient(180deg, rgba(161,189,152,.96), rgba(131,159,123,.98));
  padding:1rem 1.1rem;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.1),
    inset 0 -12px 20px rgba(49,73,44,.22);
  min-width:0;
}
.calculator-display-topline{display:flex;justify-content:space-between;gap:1rem;align-items:center;margin-bottom:.9rem}
.calculator-display-mode,.calculator-display-formula,.display-label,.calculator-display-status{
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
}
.calculator-display-mode,.display-label{
  color:#203224;
  text-transform:uppercase;
  letter-spacing:.16em;
  font-size:.72rem;
}
.calculator-display-formula{
  color:#203224;
  font-size:.84rem;
  padding:.28rem .55rem;
  border:1px solid rgba(32,50,36,.22);
  border-radius:999px;
  background:rgba(255,255,255,.12);
}
.calculator-display-primary{display:grid;gap:.25rem;margin-bottom:.9rem}
.calculator-display-primary strong{
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
  font-size:clamp(2.25rem,6vw,4rem);
  line-height:1;
  color:#122018;
  letter-spacing:.06em;
  text-shadow:none;
}
.calculator-display-secondary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}
.calculator-display-secondary strong{
  display:block;
  margin-top:.2rem;
  color:#122018;
  font-size:1.2rem;
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
}
.calculator-display-status{
  margin-top:.9rem;
  padding-top:.8rem;
  border-top:1px solid rgba(18,32,24,.12);
  color:#203224;
  font-size:.84rem;
  line-height:1.55;
}
.calculator-console-form{
  max-width:none;
  align-items:end;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.calculator-console-form label{
  padding:.8rem .85rem;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg, rgba(20,28,44,.96), rgba(11,18,31,.96));
  color:#d8e0f3;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  min-width:0;
}
.calculator-console-form input,
.calculator-console-form select{
  min-height:52px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.08);
  background:#0a1020;
  box-shadow:inset 0 2px 6px rgba(0,0,0,.24);
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
  font-size:1rem;
}
.calculator-console-actions{height:100%}
.calculator-submit-btn{
  width:100%;
  min-height:52px;
  background:linear-gradient(180deg, #304b88, #1d3362);
  border-color:rgba(255,255,255,.08);
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.1),
    0 8px 18px rgba(0,0,0,.22);
}
.calculator-keypad{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:.75rem;
}
.calc-key{
  padding:.85rem .5rem;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg, rgba(24,33,52,.98), rgba(10,16,28,.98));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.05),
    inset 0 -2px 0 rgba(0,0,0,.22);
  text-align:center;
}
.calc-key span{
  display:block;
  color:#8fa2d8;
  font-size:.8rem;
  margin-bottom:.35rem;
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
}
.calc-key strong{
  color:#f8fbff;
  font-size:.9rem;
}
.calc-key-accent{
  background:linear-gradient(180deg, rgba(75,56,20,.98), rgba(48,34,9,.98));
}
.calculator-meta-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.9rem}
.calculator-conversion-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.9rem}
.calculator-metric-card,
.calculator-conversion-card{
  text-align:center;
  background:rgba(255,255,255,.035);
}
.calculator-metric-card strong,
.calculator-conversion-card strong{
  margin-top:.35rem;
  font-family:"Consolas","SFMono-Regular","Courier New",monospace;
}
.delta-up{color:#7ef5b8 !important}
.delta-down{color:#ff9696 !important}
.delta-flat{color:#f2b84b !important}
.calculator-article-card{
  max-width:860px;
  margin-left:auto;
  margin-right:auto;
  padding:1.15rem 1.25rem;
}
.narrow-page-card{
  max-width:860px;
  margin-left:auto;
  margin-right:auto;
}
.narrow-page-card > h1,
.narrow-page-card > h2{
  margin:0 0 .65rem;
}
.narrow-page-card > .muted{
  max-width:760px;
  margin-bottom:1rem;
}
.rating-converter-output{
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.scanner-page-card .scanner-toolbar{
  grid-template-columns:minmax(0, 280px) auto 1fr;
}
.scanner-page-card .scanner-status{
  justify-content:flex-end;
}
.scanner-page-card .compact-file-input{
  max-width:280px;
}
.scanner-page-card .preview-card,
.scanner-page-card .preview-panel,
.rating-converter-card .result-card{
  background:rgba(255,255,255,.035);
}
.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1rem}
.result-card,.chip,.scanner-output > div{border-radius:16px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);padding:1rem}
.result-card strong{display:block;font-size:1.3rem;color:var(--accent)}
.calculator-results .result-card{text-align:center}
.calculator-results .result-card strong{margin-top:.35rem}
.longform{display:grid;gap:1rem;width:100%;max-width:none}
.longform p{margin:0;line-height:1.7;color:var(--text)}
.longform h2,.longform h3{margin:0 0 .25rem}
.equation{
  padding:1rem 1.1rem;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.1);
  background:#0a1327;
  color:#f8fbff;
  font-family:"Cambria Math","Times New Roman",serif;
  font-size:1.1rem;
  overflow-x:auto;
}
.references{font-size:.95rem;color:var(--muted)}
.references a{color:var(--accent-2)}
.rating-table{width:100%;border-collapse:collapse;font-size:.95rem;overflow:hidden;border-radius:16px}
.rating-table th,.rating-table td{border:1px solid rgba(255,255,255,.08);padding:.75rem .8rem;text-align:left}
.rating-table th{background:rgba(255,255,255,.05);color:var(--text)}
.rating-table td{color:var(--muted)}
.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.chart-card{margin:0;padding:1rem;border-radius:18px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03)}
.chart-card figcaption{margin-bottom:.75rem;color:var(--muted)}
.chart-svg{width:100%;height:auto;display:block}
.chart-caption{margin:.75rem 0 0;color:var(--muted);font-size:.92rem;line-height:1.55}
.chart-axis{stroke:rgba(255,255,255,.35);stroke-width:1.5}
.chart-bars rect{fill:var(--accent)}
.chart-lines line{stroke:var(--accent-2);stroke-width:4;fill:none}
.chart-dashed{stroke-dasharray:7 6}
.chart-dotted{stroke-dasharray:2 6}
.chart-labels text{fill:var(--muted);font-size:12px;font-family:Arial,sans-serif}
.scanner-shell{display:grid;gap:1rem}
.scanner-toolbar{display:grid;grid-template-columns:auto auto 1fr;gap:1rem;align-items:center}
.compact-file-input{max-width:360px}
.turn-selector{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}
.toolbar-turn-selector{flex-wrap:nowrap}
.turn-label{color:var(--muted);font-size:.9rem}
.turn-option{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem .8rem;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:#0b1326}
.turn-option input{margin:0}
.scanner-status{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:flex-end}
.scanner-layout{display:grid;grid-template-columns:minmax(0, 1fr) minmax(0, 1fr);gap:1rem;align-items:start;position:relative}
.preview-panel{border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);border-radius:18px;padding:.85rem;display:grid;gap:.7rem;min-width:0}
.preview-card{border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);border-radius:18px;padding:1rem}
.preview-title{font-size:.8rem;color:var(--muted);margin-bottom:.75rem;text-transform:uppercase;letter-spacing:.12em}
.action-link{font-size:.9rem;color:var(--accent-2);text-decoration:none;align-self:center}
.image-frame,.board-shell{width:min(100%, var(--scanner-board-size));aspect-ratio:1 / 1;margin:0 auto}
.image-frame{border-radius:18px;overflow:hidden;background:#08111e;border:1px solid rgba(255,255,255,.08)}
.image-frame img{width:100%;height:100%;object-fit:contain;display:block;background:#08111e}
.image-placeholder{width:100%;height:100%;display:grid;place-items:center;padding:1.25rem;text-align:center;color:var(--muted);background:#08111e}
.board-shell{display:flex;align-items:stretch;justify-content:center}
.board-preview{width:100%;height:100%;display:block;min-width:0;min-height:0;flex:1}
.board-preview .cg-wrap{width:100% !important;height:100% !important;min-width:0;min-height:0}
.board-preview .cg-board{width:100% !important;height:100% !important}
.board-preview .coordinates{width:100%;height:100%}
.board-preview coords.files{
  transform:translateX(-4px);
}
.inline-actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:.85rem}
.action-btn{
  min-height:50px;
  border:1px solid rgba(255,255,255,.14);
  background:#15203a;
  color:var(--text);
  padding:.7rem .95rem;
  border-radius:12px;
}
.action-btn:hover{
  border-color:rgba(125,211,252,.28);
  background:#1a2745;
}
.scanner-article-card .chart-card{
  background:rgba(255,255,255,.035);
}
.example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.example-image{width:100%;height:auto;display:block;border-radius:14px;border:1px solid rgba(255,255,255,.08);background:#08111e}
canvas{width:100%;min-height:180px;border-radius:18px;background:#08111e;border:1px solid rgba(255,255,255,.08)}
#prediction_block{display:block}
.conversion-indicator{position:absolute;left:50%;top:50%;transform:translate(-50%, -50%);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.55rem;width:72px;color:var(--muted);pointer-events:none;z-index:2}
.conversion-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.1);background:#0b1326;color:var(--text);font-size:1.4rem;line-height:1}
.conversion-spinner{display:none;color:var(--accent)}
.scanner-shell.is-busy .conversion-spinner{display:inline-flex}
.scanner-shell.is-busy .conversion-icon{display:none}
pre{margin:0;white-space:pre-wrap;word-break:break-word;background:#07101d;color:#dbeafe;padding:.85rem;border-radius:16px;border:1px solid rgba(255,255,255,.08);font-size:.9rem}
@media (max-width: 1200px){
  .calculator-console-form{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .rating-converter-output{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}
@media (max-width: 992px){
  .hero,.tool-grid,.result-grid,.scanner-layout{grid-template-columns:1fr}
  .tool-form{grid-template-columns:1fr}
  .compact-tool-form{max-width:none}
  .calculator-console-form{grid-template-columns:1fr}
  .calculator-display-secondary,
  .calculator-keypad,
  .calculator-meta-grid,
  .calculator-conversion-strip{grid-template-columns:1fr}
  .calculator-console-shell,
  .calculator-article-card,
  .narrow-page-card{max-width:none}
  .rating-converter-output{grid-template-columns:1fr}
  .longform{max-width:none}
  .chart-grid{grid-template-columns:1fr}
  .example-grid{grid-template-columns:1fr}
  .scanner-toolbar{grid-template-columns:1fr}
  .compact-file-input{max-width:none}
  .toolbar-turn-selector{flex-wrap:wrap}
  .scanner-status{justify-content:flex-start}
  .scanner-layout{gap:.75rem}
  .conversion-indicator{position:static;transform:none;min-height:auto;padding:.25rem 0;justify-self:center}
  .image-frame,.board-shell{width:min(100%, 420px)}
}