:root{
  --base: #191724;
  --surface: #1f1d2e;
  --overlay: #26233a;
  --muted: #6e6a86;
  --subtle: #908caa;
  --text: #e0def4;
  --accent: #c4a7e7;
  --accent-2: #9ccfd8;
  --love: #eb6f92;
  --gold: #f6c177;
  --rose: #ebbcba;
  --pine: #31748f;
  --foam: #9ccfd8;
  --iris: #c4a7e7;
  --hl-low: #21202e;
  --hl-med: #403d52;
  --hl-high: #524f67;
  --border: rgba(224,222,244,0.06);
  --shadow: 0 8px 24px rgba(3,6,23,0.6);
  --radius: 12px;
}

@media (prefers-color-scheme: light){
  :root:not([data-theme]){
    --base: #f8f7fb;
    --surface: #ffffff;
    --overlay: #f1eff7;
    --muted: #6e6a86;
    --subtle: #403d52;
    --text: #1f1d2e;
    --hl-low: #efedf4;
    --hl-med: #e3e0ec;
    --hl-high: #d6d2e3;
    --border: rgba(25,23,36,0.08);
    --shadow: 0 8px 24px rgba(25,23,36,0.08);
  }
}

html[data-theme="light"]{
  --base: #f8f7fb;
  --surface: #ffffff;
  --overlay: #f1eff7;
  --muted: #6e6a86;
  --subtle: #403d52;
  --text: #1f1d2e;
  --hl-low: #efedf4;
  --hl-med: #e3e0ec;
  --hl-high: #d6d2e3;
  --border: rgba(25,23,36,0.08);
  --shadow: 0 8px 24px rgba(25,23,36,0.08);
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  background: var(--base);
  color: var(--text);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  font-weight: 400;
  scroll-behavior: smooth;
}

.container{
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
}

.product-header{
  padding: 32px 0 22px;
  border-bottom: 1px solid rgba(224,222,244,0.04);
  background: radial-gradient(700px 260px at 20% 0%, rgba(156,207,216,0.15), transparent),
              radial-gradient(600px 240px at 80% 0%, rgba(196,167,231,0.12), transparent);
}

.page-nav{
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--base) 92%, transparent);
  border-bottom: 1px solid rgba(224,222,244,0.06);
  backdrop-filter: blur(10px);
}

.page-nav .nav-inner{
  display: flex;
  gap: 10px;
  align-items: center;
  overflow-x: auto;
  padding: 10px 0;
}

.page-nav a{
  color: var(--subtle);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--overlay);
  border: 1px solid rgba(224,222,244,0.08);
  white-space: nowrap;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.page-nav a:hover{
  color: var(--text);
  transform: translateY(-1px);
  background: rgba(49,116,143,0.25);
  border-color: rgba(156,207,216,0.35);
}

.app-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}

.app-icon img{
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
  border-radius: 10px;
}

.product-title{
  font-size: 42px;
  line-height: 1.12;
  margin: 8px 0 10px;
  letter-spacing: -0.02em;
}

.title-row{
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 8px 0 6px;
}

.title-row .product-title{
  margin: 0;
}

.product-subtitle{
  margin: 0;
  color: var(--subtle);
  max-width: 78ch;
  font-size: 16px;
}

.site-header{
  padding: 28px 0 18px;
  border-bottom: 1px solid rgba(224,222,244,0.04);
  background: linear-gradient(180deg, rgba(196,167,231,0.06), transparent 60%);
}

.app-shots .muted{
  max-width: none;
}

.shot-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.shot-card{
  margin: 0;
  padding: 10px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid rgba(224,222,244,0.04);
  display: grid;
  gap: 8px;
}

.shot-card img{
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid rgba(224,222,244,0.04);
}

.shot-card figcaption{
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.shot-card.placeholder{
  padding: 0;
  min-height: 180px;
  border-style: dashed;
}

.placeholder-box{
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(82,79,103,0.1);
}

.team-row{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(49,116,143,0.2);
  border: 1px solid rgba(156,207,216,0.3);
  margin-top: 10px;
  margin-bottom: 10px;
}

.team-label{
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.1;
  display: inline-flex;
  align-items: center;
}

.team-names{
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.header-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.product-header .header-row{
  justify-content: flex-end;
}

.header-actions{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.badge{
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid rgba(224,222,244,0.04);
  border-radius: 999px;
  color: var(--subtle);
  font-size: 13px;
  margin-bottom: 12px;
  background: rgba(82,79,103,0.06);
}

.theme-toggle{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(224,222,244,0.08);
  background: var(--overlay);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}

.download-btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--pine);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(156,207,216,0.35);
  box-shadow: 0 6px 16px rgba(49,116,143,0.3);
}

.download-btn:hover{
  background: rgba(49,116,143,0.85);
  color: var(--text);
}

.theme-toggle:hover{
  background: var(--hl-med);
}

.theme-toggle:focus-visible{
  outline: 2px solid var(--iris);
  outline-offset: 2px;
}

.theme-toggle__icon{
  font-size: 14px;
}

.repo-link{
  color: var(--foam);
  text-decoration: none;
  font-weight: 600;
}

.repo-link:hover{
  text-decoration: underline;
}

h1{
  font-size: 38px;
  line-height: 1.15;
  margin: 0 0 8px;
  letter-spacing: -0.015em;
  color: var(--text);
}

.site-header h1{
  font-size: 30px;
  line-height: 1.2;
}

.subtitle{
  margin: 0 0 16px;
  color: var(--subtle);
  max-width: 72ch;
  font-size: 16px;
}

.erd-wrap{
  margin-top: 18px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid rgba(224,222,244,0.08);
  border-radius: 16px;
}

.erd-diagram{
  width: 100%;
  max-width: 720px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.erd-card{
  fill: rgba(28,26,46,0.55);
  stroke: rgba(224,222,244,0.12);
  stroke-width: 2;
}

[data-theme='light'] .erd-card{
  fill: rgba(248,246,253,0.9);
  stroke: rgba(45,43,61,0.12);
}

.erd-header{
  fill: rgba(98,203,228,0.18);
}

.erd-line{
  stroke: rgba(224,222,244,0.16);
  stroke-width: 2;
}

.erd-title{
  fill: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.erd-field{
  fill: var(--text);
  font-size: 14px;
}

.meta-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.meta-card{
  background: var(--surface);
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.meta-label{
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-value{
  font-size: 15.5px;
  margin-top: 4px;
}

.toc{
  position: sticky;
  top: 16px;
  z-index: 10;
  background: transparent;
}

.toc .container{
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 6px 0;
}

.toc a{
  color: var(--subtle);
  text-decoration: none;
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.toc a:hover{
  color: var(--text);
  background: var(--overlay);
  transform: translateX(2px);
}

.toc a.is-active{
  background: rgba(49,116,143,0.25);
  color: var(--text);
  border-color: rgba(156,207,216,0.25);
}

.section{
  padding: 28px 0;
  border-bottom: 1px solid rgba(224,222,244,0.03);
}

h2{
  margin: 0 0 10px;
  font-size: 26px;
  letter-spacing: -0.012em;
  color: var(--text);
}

h3{
  margin: 0 0 10px;
  font-size: 19px;
  color: var(--text);
}

.mt{ margin-top: 18px; }

p{ margin: 0 0 12px; color: var(--subtle); font-size: 15.5px; }
li{ color: var(--subtle); font-size: 15.5px; }
strong{ color: var(--text); font-weight: 600; }
a{ color: var(--foam); text-decoration: none; }
a:hover{ color: var(--rose); }

.muted{ color: var(--muted); }

.callouts{
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 16px;
  margin-top: 14px;
}

.callout{
  background: var(--overlay);
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  padding: 14px;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.callout:hover,
.meta-card:hover,
.panel:hover,
.stat:hover,
.hero-card:hover,
blockquote:hover{
  transform: translateY(-2px);
  border-color: rgba(156,207,216,0.35);
}

.meta-card,
.panel,
.stat,
.hero-card,
blockquote{
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.methods-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 12px;
}

.tag-row{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.tag{
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--text);
  background: rgba(49,116,143,0.25);
  border: 1px solid rgba(156,207,216,0.3);
}

.step-list{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--text);
}

.step-list li{
  margin: 8px 0;
  color: var(--subtle);
}

.note{
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(49,116,143,0.25), rgba(196,167,231,0.15));
  color: var(--text);
}

.two-col{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
  align-items: stretch;
}

.panel{
  background: var(--overlay);
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  padding: 14px;
  height: 100%;
}

.panel + .panel{
  margin-top: 16px;
}

.two-col .panel + .panel{
  margin-top: 0;
}

.app-concept .two-col + .panel{
  margin-top: 16px;
}

.checklist{
  list-style: none;
  padding-left: 0;
  margin: 10px 0 0;
}

.checklist li{
  padding-left: 28px;
  margin: 10px 0;
  position: relative;
}

.checklist li::before{
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-2);
  font-weight: 700;
}

.table-wrap{
  overflow-x: auto;
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  margin-top: 10px;
  background: var(--hl-low);
}

table{
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th, td{
  padding: 12px 14px;
  border-bottom: 1px solid rgba(224,222,244,0.06);
  text-align: left;
  font-size: 14.5px;
}

th{
  color: var(--text);
  font-weight: 700;
  background: rgba(64,61,82,0.35);
}

tbody tr:nth-child(even){
  background: var(--hl-low);
}

tbody tr:hover{ background: var(--hl-med); }

/* Figures */
.figure{
  margin: 12px 0 0;
  background: transparent;
  border-radius: var(--radius);
  padding: 8px;
}

.figure img{
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  border: 1px solid rgba(224,222,244,0.04);
}

.figure canvas{
  width: 100%;
  display: block;
  border-radius: 8px;
  border: 1px solid rgba(224,222,244,0.04);
  background: var(--surface);
}

.chart-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 12px;
}

.visualizations-group{
  display: grid;
  gap: 18px;
}

.chart-card{
  background: var(--surface);
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  padding: 10px;
}

.chart-card canvas{
  width: 100%;
  display: block;
}

.figure--chart img{ max-height: 420px; }
.figure--screenshot img{ max-height: 620px; }
.figure--full img{ max-height: none; }

figcaption{
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

.results-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.stat{
  background: var(--surface);
  border: 1px solid rgba(224,222,244,0.02);
  border-radius: var(--radius);
  padding: 14px;
}

.stat-label{ color: var(--muted); font-size: 12px; }
.stat-value{ font-size: 21px; margin-top: 6px; font-weight: 700; }
.stat-sub{ color: var(--muted); font-size: 12px; margin-top: 6px; }

.quotes{ display: grid; gap: 12px; margin-top: 14px; }

blockquote{
  margin: 0;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid rgba(224,222,244,0.02);
  background: var(--overlay);
  color: var(--text);
  font-size: 15.5px;
}

.site-footer{ padding: 24px 0; color: var(--muted); text-align: center; }

/* Hero metrics */
.hero{ padding: 18px 0 4px; }
.hero-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.hero-card{ background: var(--surface); border: 1px solid rgba(224,222,244,0.02); border-radius: 12px; padding: 14px; }
.hero-label{ color: var(--muted); font-size: 12px; }
.hero-value{ font-size: 24px; margin-top: 6px; font-weight: 800; color: var(--pine); }
.hero-sub{ color: var(--subtle); font-size: 12px; margin-top: 6px; }

/* Table controls (filter bar) */
.table-controls{ display:flex; gap:8px; align-items:center; margin:10px 0; }
.table-filter{ flex:1; padding:8px 10px; border-radius:8px; border:1px solid rgba(224,222,244,0.04); background:var(--hl-low); color:var(--text); }
.table-filter::placeholder{ color:var(--muted); }

/* Scroll reveal */
.reveal{
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.in-view{
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce){
  *{
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

/* Left sidebar layout */
.layout{ display:block; }
@media (min-width: 980px){
  .layout{ display:grid; grid-template-columns: 260px 1fr; gap: 28px; align-items:start; }
  .left-nav{ position:sticky; top:28px; align-self:start; height:calc(100vh - 56px); overflow:auto; padding-right:6px; }
  .left-nav .toc{ background:transparent; padding:8px; }
}

/* Heuristic table tweaks */
.data-table td:nth-child(4),
.data-table th:nth-child(4){
  text-align: center;
  width: 110px;
  white-space: nowrap;
}

.data-table td:first-child,
.data-table th:first-child{
  width: 70px;
  text-align: center;
  white-space: nowrap;
}

.data-table td{ vertical-align: top; }

/* Responsive tweaks */
@media (max-width: 980px){
  .meta-grid{ grid-template-columns: 1fr 1fr; }
  .results-grid{ grid-template-columns: 1fr 1fr; }
  .callouts{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .methods-grid{ grid-template-columns: 1fr 1fr; }
  .chart-grid{ grid-template-columns: 1fr; }
  .shot-grid{ grid-template-columns: 1fr 1fr; }
  h1{ font-size: 30px; }
  table{ min-width: 420px; }
  .figure img{ max-height: 360px; }
  .hero-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px){
  .hero-grid{ grid-template-columns: 1fr; }
  .meta-grid{ grid-template-columns: 1fr; }
  .methods-grid{ grid-template-columns: 1fr; }
  .shot-grid{ grid-template-columns: 1fr; }
}

/* Removed duplicated responsive and heuristic blocks */