/* ═══════════════════════════════════════════════════════
   QUALCOMM DEV KIT DASHBOARD — style.css
   Palette: dark silicon (#0d0f10 bg), electric blue accent,
   per-kit: Windows=blue, QIDK=teal, Elite=gold/orange
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Inter:wght@300..700&display=swap');

/* ── Tokens ─────────────────────────────────────────── */
:root, [data-theme="dark"] {
  --color-bg:        #0d0f10;
  --color-surface:   #131618;
  --color-surface-2: #181b1d;
  --color-surface-offset: #1c2022;
  --color-border:    #272c30;
  --color-divider:   #1e2226;
  --color-text:      #d8dde2;
  --color-text-muted: #6a7580;
  --color-text-faint: #3a4249;
  --color-text-inverse: #0d0f10;

  /* Kit accent colors */
  --color-windows:   #3b82f6;  /* Blue */
  --color-windows-bg: rgba(59,130,246,0.07);
  --color-windows-border: rgba(59,130,246,0.25);
  --color-qidk:      #10b981;  /* Teal/Emerald */
  --color-qidk-bg:   rgba(16,185,129,0.07);
  --color-qidk-border: rgba(16,185,129,0.25);
  --color-elite:     #f59e0b;  /* Amber/Gold */
  --color-elite-bg:  rgba(245,158,11,0.07);
  --color-elite-border: rgba(245,158,11,0.25);
  /* SiMa.ai — electric green */
  --color-sima:      #22c55e;
  --color-sima-bg:   rgba(34,197,94,0.08);
  --color-sima-border: rgba(34,197,94,0.28);

  --color-accent:    #3b82f6;
  --color-accent-glow: rgba(59,130,246,0.15);

  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Cascadia Code', monospace;
  --font-display: 'Inter', system-ui, sans-serif;

  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2.5vw, 3rem);

  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem;  --radius-xl: 1rem;  --radius-full: 9999px;

  --transition: 180ms cubic-bezier(0.16,1,0.3,1);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);

  --content-default: 1200px;
}

[data-theme="light"] {
  --color-bg:        #f4f6f8;
  --color-surface:   #ffffff;
  --color-surface-2: #f8f9fa;
  --color-surface-offset: #eef0f2;
  --color-border:    #dce0e4;
  --color-divider:   #e8eaec;
  --color-text:      #18222a;
  --color-text-muted: #5a6673;
  --color-text-faint: #aab3bc;
  --color-text-inverse: #ffffff;

  --color-windows-bg: rgba(59,130,246,0.06);
  --color-windows-border: rgba(59,130,246,0.2);
  --color-qidk-bg:   rgba(16,185,129,0.06);
  --color-qidk-border: rgba(16,185,129,0.2);
  --color-elite-bg:  rgba(245,158,11,0.06);
  --color-elite-border: rgba(245,158,11,0.2);
  --color-sima:      #16a34a;
  --color-sima-bg:   rgba(22,163,74,0.06);
  --color-sima-border: rgba(22,163,74,0.22);
  --color-accent-glow: rgba(59,130,246,0.1);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:#f4f6f8; --color-surface:#ffffff; --color-surface-2:#f8f9fa;
    --color-surface-offset:#eef0f2; --color-border:#dce0e4;
    --color-divider:#e8eaec; --color-text:#18222a;
    --color-text-muted:#5a6673; --color-text-faint:#aab3bc;
    --color-text-inverse:#ffffff;
    --color-windows-bg:rgba(59,130,246,0.06);
    --color-windows-border:rgba(59,130,246,0.2);
    --color-qidk-bg:rgba(16,185,129,0.06);
    --color-qidk-border:rgba(16,185,129,0.2);
    --color-elite-bg:rgba(245,158,11,0.06);
    --color-elite-border:rgba(245,158,11,0.2);
    --color-sima:#16a34a;
    --color-sima-bg:rgba(22,163,74,0.06);
    --color-sima-border:rgba(22,163,74,0.22);
    --shadow-sm:0 1px 3px rgba(0,0,0,0.08);
    --shadow-md:0 4px 16px rgba(0,0,0,0.1);
  }
}

/* ── Reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4,h5,h6 { line-height: 1.15; text-wrap: balance; }
p, li { text-wrap: pretty; }
table { border-collapse: collapse; width: 100%; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; max-width: 100%; }

/* ── Header ─────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.logo-lockup { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.logo-icon { color: var(--color-accent); }
.logo-title {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text);
  text-transform: uppercase;
}
.logo-sub {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.top-nav {
  display: flex;
  gap: var(--space-5);
  margin-left: auto;
}
.top-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
  white-space: nowrap;
}
.top-nav a:hover { color: var(--color-text); }
.theme-toggle {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* ── Hero ───────────────────────────────────────────── */
.hero {
  padding: var(--space-16) var(--space-6) var(--space-12);
  background:
    radial-gradient(ellipse 70% 60% at 20% 0%, var(--color-accent-glow), transparent),
    radial-gradient(ellipse 50% 40% at 80% 100%, rgba(16,185,129,0.06), transparent);
}
.hero-inner { max-width: var(--content-default); margin: 0 auto; }
.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-windows-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}
.hero h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.accent-text { color: var(--color-accent); }
.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 720px;
  margin-bottom: var(--space-6);
  line-height: 1.7;
}
.hero-chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid;
}
.chip-windows { color: var(--color-windows); border-color: var(--color-windows-border); background: var(--color-windows-bg); }
.chip-android { color: var(--color-qidk); border-color: var(--color-qidk-border); background: var(--color-qidk-bg); }
.chip-mobile  { color: var(--color-elite); border-color: var(--color-elite-border); background: var(--color-elite-bg); }
.chip-sima    { color: var(--color-sima); border-color: var(--color-sima-border); background: var(--color-sima-bg); }

/* ── Sections ───────────────────────────────────────── */
.section { padding: var(--space-16) var(--space-6); }
.section-alt { background: var(--color-surface); }
.section-inner { max-width: var(--content-default); margin: 0 auto; }
.section-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}
.section-sub {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-bottom: var(--space-10);
  max-width: 640px;
}
.subsection-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  padding-top: var(--space-10);
}

/* ── Kit Cards ──────────────────────────────────────── */
.kit-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
@media (max-width: 1100px) { .kit-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .kit-cards { grid-template-columns: 1fr; } }

.kit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.kit-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.kit-card--windows::before { background: var(--color-windows); }
.kit-card--qidk::before   { background: var(--color-qidk); }
.kit-card--elite::before  { background: var(--color-elite); }
.kit-card--sima::before   { background: var(--color-sima); }

.kit-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.kit-card-header { display: flex; justify-content: space-between; align-items: flex-start; }
.kit-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}
.kit-card--windows .kit-badge { color: var(--color-windows); background: var(--color-windows-bg); }
.kit-card--qidk   .kit-badge { color: var(--color-qidk);    background: var(--color-qidk-bg); }
.kit-card--elite  .kit-badge { color: var(--color-elite);   background: var(--color-elite-bg); }
.kit-card--sima   .kit-badge { color: var(--color-sima);    background: var(--color-sima-bg); }
.kit-card--sima { border-color: var(--color-sima-border); }
.featured-badge-card {
  display: inline-block;
  background: var(--color-sima-bg);
  color: var(--color-sima);
  border: 1px solid var(--color-sima-border);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  width: fit-content;
  margin-bottom: var(--space-2);
}
.sima-stat { color: var(--color-sima) !important; }
.tag-sima { color: var(--color-sima) !important; border-color: var(--color-sima-border) !important; background: var(--color-sima-bg) !important; }

.kit-price {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
}
.kit-chip-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface-offset);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  display: inline-block;
}
.kit-name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
}
.kit-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.kit-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
}
.stat { display: flex; flex-direction: column; align-items: center; text-align: center; gap: var(--space-1); }
.stat-val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); }
.kit-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: auto; }
.tag {
  font-size: var(--text-xs);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* ── Spec Table ─────────────────────────────────────── */
.table-scroll { overflow-x: auto; border-radius: var(--radius-xl); border: 1px solid var(--color-border); }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.spec-table thead tr {
  background: var(--color-surface-offset);
}
.spec-table th {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  vertical-align: bottom;
}
.th-sub {
  display: block;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}
.col-spec    { width: 180px; color: var(--color-text-muted); }
.col-windows { color: var(--color-windows); }
.col-qidk    { color: var(--color-qidk); }
.col-elite   { color: var(--color-elite); }
.col-sima    { color: var(--color-sima); }

.spec-table tbody tr { border-bottom: 1px solid var(--color-divider); }
.spec-table tbody tr:last-child { border-bottom: none; }
.spec-table tbody tr:hover { background: var(--color-surface-offset); }

.row-group td {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border) !important;
}
.group-label { border-top: 1px solid var(--color-border); }

.spec-name {
  padding: var(--space-3) var(--space-5);
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  white-space: nowrap;
}
.val {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-xs);
  line-height: 1.5;
  vertical-align: top;
}
.val-windows { border-left: 2px solid var(--color-windows-border); background: var(--color-windows-bg); }
.val-qidk    { border-left: 2px solid var(--color-qidk-border);    background: var(--color-qidk-bg); }
.val-elite   { border-left: 2px solid var(--color-elite-border);   background: var(--color-elite-bg); }
.val-sima    { border-left: 2px solid var(--color-sima-border);    background: var(--color-sima-bg); }

.mono { font-family: var(--font-mono); font-size: 0.85em; }
.badge-best {
  display: inline-block;
  background: rgba(245,158,11,0.12);
  color: var(--color-elite);
  padding: 1px var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9em;
}
.badge-sima {
  display: inline-block;
  background: var(--color-sima-bg);
  color: var(--color-sima);
  padding: 1px var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9em;
  line-height: 1.6;
}
.price-tag { font-family: var(--font-mono); font-weight: 700; font-size: var(--text-sm) !important; }

/* ── AI Performance ─────────────────────────────────── */
.ai-grid { display: grid; gap: var(--space-5); margin-bottom: var(--space-12); }
.ai-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .ai-grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .ai-grid-4 { grid-template-columns: 1fr; } }

.ai-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
}
.ai-card-featured {
  border-color: var(--color-elite-border);
  box-shadow: 0 0 0 1px var(--color-elite-border), var(--shadow-md);
}
.featured-badge {
  display: inline-block;
  background: var(--color-elite-bg);
  color: var(--color-elite);
  border: 1px solid var(--color-elite-border);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  width: fit-content;
}
.featured-badge-sima {
  display: inline-block;
  background: var(--color-sima-bg);
  color: var(--color-sima);
  border: 1px solid var(--color-sima-border);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  width: fit-content;
}
.ai-card-featured-sima {
  border-color: var(--color-sima-border);
  box-shadow: 0 0 0 1px var(--color-sima-border), var(--shadow-md);
}
.ai-header-sima { background: var(--color-sima-bg); }
.ai-tops-sima {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-sima);
  white-space: nowrap;
}
.check-sima { color: var(--color-sima); flex-shrink: 0; font-weight: 700; }
.ai-best-for-sima {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-sima-bg);
  border: 1px solid var(--color-sima-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  line-height: 1.6;
  margin-top: auto;
}
.ai-best-for-sima strong { color: var(--color-sima); }
.ai-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
}
.ai-header-windows { background: var(--color-windows-bg); }
.ai-header-qidk    { background: var(--color-qidk-bg); }
.ai-header-elite   { background: var(--color-elite-bg); }

.ai-kit-name { font-size: var(--text-xs); font-weight: 600; }
.ai-tops {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  white-space: nowrap;
}
.ai-header-windows .ai-tops { color: var(--color-windows); }
.ai-header-qidk    .ai-tops { color: var(--color-qidk); }
.ai-header-elite   .ai-tops { color: var(--color-elite); }

.ai-bar-wrap {
  position: relative;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  height: 6px;
}
.ai-bar {
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-windows);
  transition: width 0.8s cubic-bezier(0.16,1,0.3,1);
}
.ai-bar-qidk  { background: var(--color-qidk); }
.ai-bar-elite { background: var(--color-elite); }
.ai-bar-sima  { background: linear-gradient(90deg, rgba(34,197,94,0.4), var(--color-sima)); }
.ai-bar-label { font-size: var(--text-xs); color: var(--color-text-muted); }

.ai-features { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.ai-features li { font-size: var(--text-xs); display: flex; gap: var(--space-2); align-items: flex-start; }
.check { color: #10b981; flex-shrink: 0; font-weight: 700; }
.cross { color: #ef4444; flex-shrink: 0; font-weight: 700; }
.ai-best-for {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  line-height: 1.6;
  margin-top: auto;
}
.ai-best-for strong { color: var(--color-text); }

/* TOPS bars */
.tops-compare { margin-top: var(--space-8); }
.tops-bars { display: flex; flex-direction: column; gap: var(--space-5); }
.tops-row { display: grid; grid-template-columns: 220px 1fr; align-items: center; gap: var(--space-5); }
.tops-kit-name { font-size: var(--text-xs); font-weight: 500; color: var(--color-text-muted); text-align: right; }
.tops-bar-track {
  position: relative;
  height: 28px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-md);
  overflow: visible;
}
.tops-fill {
  height: 100%;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  padding-right: var(--space-3);
  justify-content: flex-end;
  transition: width 1s cubic-bezier(0.16,1,0.3,1);
}
.tops-fill-windows  { background: linear-gradient(90deg, rgba(59,130,246,0.3), var(--color-windows)); }
.tops-fill-qidk     { background: linear-gradient(90deg, rgba(16,185,129,0.3), var(--color-qidk)); }
.tops-fill-elite    { background: linear-gradient(90deg, rgba(245,158,11,0.3), var(--color-elite)); }
.tops-fill-sima     { background: linear-gradient(90deg, rgba(34,197,94,0.3), var(--color-sima)); }
.tops-fill-sima-max { background: linear-gradient(90deg, rgba(34,197,94,0.5), #16a34a); }
.tops-val { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 700; color: #fff; }
.tops-row-context { opacity: 0.7; }
.tops-context-label { font-style: italic; color: var(--color-text-faint); }
.tops-threshold-line {
  position: absolute;
  top: -6px;
  bottom: -6px;
  width: 2px;
  background: #ef4444;
}
.threshold-label {
  position: absolute;
  top: -20px;
  left: 6px;
  font-size: 10px;
  color: #ef4444;
  font-family: var(--font-mono);
  white-space: nowrap;
  font-weight: 600;
}

/* ── Software Matrix ────────────────────────────────── */
.sw-yes-sima { color: var(--color-sima); font-weight: 700; }

.sw-block { display: flex; flex-direction: column; }
.sw-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.sw-matrix {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.sw-row {
  display: grid;
  grid-template-columns: 1fr 70px 70px 80px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  border-bottom: 1px solid var(--color-divider);
  align-items: center;
}
.sw-row:last-child { border-bottom: none; }
.sw-header-row {
  background: var(--color-surface-offset);
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.sw-col { text-align: center; }
.sw-yes  { color: #10b981; font-weight: 700; }
.sw-no   { color: var(--color-text-faint); }
.sw-partial { color: var(--color-elite); font-weight: 600; }

.os-support-grid { display: flex; flex-direction: column; gap: var(--space-4); margin-bottom: var(--space-6); }
.os-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.os-icon { font-size: 1.2em; margin-bottom: var(--space-2); }
.os-name { font-weight: 600; font-size: var(--text-sm); color: var(--color-text); margin-bottom: var(--space-2); }
.os-kits { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-2); }
.os-kit {
  font-size: var(--text-xs);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-weight: 500;
  border: 1px solid;
}
.os-kit.supported { color: #10b981; border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.07); }
.os-kit.unsupported { color: var(--color-text-faint); border-color: var(--color-border); background: var(--color-surface-offset); }
.os-kit.partial { color: var(--color-elite); border-color: var(--color-elite-border); background: var(--color-elite-bg); }
.os-note { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.5; }

.resource-list { display: flex; flex-direction: column; gap: var(--space-4); }
.resource {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.res-icon { font-size: 1.1em; flex-shrink: 0; color: var(--color-accent); margin-top: 2px; }
.resource strong { display: block; font-size: var(--text-sm); color: var(--color-text); margin-bottom: var(--space-1); }
.resource p { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.6; max-width: none; }

/* ── Selector ───────────────────────────────────────── */
.selector-tool {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
@media (max-width: 900px) { .selector-tool { grid-template-columns: 1fr; } }

.selector-questions { display: flex; flex-direction: column; gap: var(--space-5); }
.question-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: none;
}
.question-block.active { display: block; }
.q-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.q-body h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.q-options { display: flex; flex-direction: column; gap: var(--space-2); }
.q-btn {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  transition: all var(--transition);
  cursor: pointer;
}
.q-btn:hover {
  background: var(--color-windows-bg);
  color: var(--color-text);
  border-color: var(--color-windows-border);
}

/* Recommendation panel */
.recommendation-panel {
  position: sticky;
  top: 80px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  align-self: flex-start;
  height: fit-content;
}
.rec-placeholder {
  padding: var(--space-8);
  text-align: center;
  color: var(--color-text-muted);
}
.rec-icon { font-size: 2em; margin-bottom: var(--space-4); opacity: 0.3; }
.rec-result { padding: var(--space-5); }
.rec-header-bar {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  text-align: center;
}
.rec-bar-windows { background: var(--color-windows-bg); color: var(--color-windows); }
.rec-bar-qidk    { background: var(--color-qidk-bg);    color: var(--color-qidk); }
.rec-bar-elite   { background: var(--color-elite-bg);   color: var(--color-elite); }
.rec-bar-sima    { background: var(--color-sima-bg);    color: var(--color-sima); }
.rec-bar-all     { background: var(--color-surface-offset); color: var(--color-text-muted); }
.rec-sima .rec-kit-name { color: var(--color-sima); }
.rec-strength-sima { font-size: var(--text-xs); display: flex; gap: var(--space-2); }
.rec-strength-sima span { color: var(--color-sima); font-weight: 700; }

.rec-kit-name { font-size: var(--text-base); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-2); }
.rec-price-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.rec-result > p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}
.rec-strengths, .rec-caveats { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-4); }
.rec-strength { font-size: var(--text-xs); display: flex; gap: var(--space-2); }
.rec-strength span { color: #10b981; font-weight: 700; }
.rec-caveat { font-size: var(--text-xs); color: var(--color-text-muted); display: flex; gap: var(--space-2); }
.rec-caveat span { color: var(--color-elite); font-weight: 700; }
.rec-reset {
  font-size: var(--text-xs);
  color: var(--color-accent);
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

/* Use case matrix */
.usecase-table td, .usecase-table th { padding: var(--space-3) var(--space-4) !important; }
.fit-best      { color: var(--color-elite); font-weight: 700; }
.fit-best-sima { color: var(--color-sima); font-weight: 700; }
.fit-good      { color: #10b981; font-weight: 600; }
.fit-partial   { color: var(--color-text-muted); }
.fit-none      { color: var(--color-text-faint); }

/* ── Pricing ────────────────────────────────────────── */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; } }

/* ── Efficiency Callout ─────────────────────────────── */
.efficiency-callout {
  margin-top: var(--space-10);
  background: var(--color-sima-bg);
  border: 1px solid var(--color-sima-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.eff-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-sima);
  margin-bottom: var(--space-5);
}
.eff-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
@media (max-width: 900px) { .eff-stats { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 500px)  { .eff-stats { grid-template-columns: repeat(2, 1fr); } }
.eff-stat { display: flex; flex-direction: column; gap: var(--space-1); }
.eff-val {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-sima);
  line-height: 1;
}
.eff-label { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.5; }
.eff-note { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.65; }

.pricing-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
}
.pricing-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
}
.pricing-card-windows::after { background: var(--color-windows); }
.pricing-card-qidk::after   { background: var(--color-qidk); }
.pricing-card-elite::after  { background: var(--color-elite); }

.pricing-tier {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.pricing-name { font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.pricing-main {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
}
.pricing-card-windows .pricing-main { color: var(--color-windows); }
.pricing-card-qidk   .pricing-main  { color: var(--color-qidk); }
.pricing-card-elite  .pricing-main  { color: var(--color-elite); }

.pricing-what, .pricing-channel {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.pricing-channel { font-style: italic; }
.pricing-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
}
.pricing-items li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
}
.pricing-total {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}
.pricing-total strong { color: inherit; }

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-6);
}
.footer-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}
.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-accent);
}

/* ── Responsive polish ──────────────────────────────── */
@media (max-width: 640px) {
  .top-nav { display: none; }
  .hero { padding: var(--space-10) var(--space-4) var(--space-8); }
  .section { padding: var(--space-10) var(--space-4); }
  .tops-row { grid-template-columns: 130px 1fr; }
}

/* =====================================================
   HEADER ACTIONS & EXPORT BUTTON
   ===================================================== */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-sima);
  background: transparent;
  border: 1px solid var(--color-sima);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn-export:hover {
  background: var(--color-sima);
  color: #000;
  box-shadow: 0 0 12px rgba(34,197,94,0.35);
}

.btn-export svg {
  flex-shrink: 0;
}

/* =====================================================
   PRINT / PDF STYLES
   ===================================================== */
@media print {
  /* Force light background for readability */
  :root, [data-theme="dark"] {
    --bg-base: #ffffff !important;
    --bg-surface: #f8f9fa !important;
    --bg-elevated: #f0f2f5 !important;
    --text-primary: #0a0a0a !important;
    --text-secondary: #374151 !important;
    --text-muted: #6b7280 !important;
    --border-subtle: #d1d5db !important;
    --border-default: #9ca3af !important;
  }

  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  /* Hide interactive / nav elements */
  .site-header,
  .top-nav,
  .theme-toggle,
  .btn-export,
  .hero-chips,
  #selector,
  .selector-section,
  .print-hide {
    display: none !important;
  }

  /* Reset body layout */
  body {
    background: #fff !important;
    color: #0a0a0a !important;
    font-size: 10pt;
    margin: 0;
    padding: 0;
  }

  main {
    padding: 0;
  }

  /* Hero trimmed */
  .hero {
    padding: 1.5rem 2rem 1rem;
    page-break-after: avoid;
  }

  .hero h1 {
    font-size: 22pt;
    line-height: 1.2;
  }

  .hero-sub {
    font-size: 9pt;
    color: #374151 !important;
  }

  /* Print header watermark line */
  .hero::before {
    content: "Edge AI DevKit Comparison — Qualcomm vs SiMa.ai  ·  Exported " attr(data-print-date);
    display: block;
    font-family: monospace;
    font-size: 7.5pt;
    color: #6b7280;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid #d1d5db;
    padding-bottom: 0.4rem;
  }

  /* Platform grid — 2 columns on print */
  .platform-grid,
  .overview-grid {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 0.75rem !important;
    page-break-inside: avoid;
  }

  .platform-card,
  .overview-card {
    border: 1px solid #d1d5db !important;
    border-radius: 6px !important;
    padding: 0.75rem !important;
    background: #f8f9fa !important;
    page-break-inside: avoid;
  }

  /* Tables */
  .spec-table-wrap {
    overflow: visible !important;
  }

  table {
    width: 100% !important;
    border-collapse: collapse !important;
    font-size: 8.5pt !important;
    page-break-inside: auto;
  }

  thead {
    display: table-header-group;
  }

  tr {
    page-break-inside: avoid;
  }

  th, td {
    border: 1px solid #d1d5db !important;
    padding: 4px 6px !important;
    background: #fff !important;
    color: #0a0a0a !important;
  }

  th {
    background: #f0f2f5 !important;
    font-weight: 700;
  }

  /* Section headings */
  .section-header {
    page-break-after: avoid;
  }

  section {
    page-break-before: auto;
    padding: 1rem 2rem !important;
  }

  /* TOPS bars — keep colour */
  .tops-bar-fill {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  /* Use-case matrix */
  .use-case-grid {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 0.5rem !important;
  }

  /* Efficiency callout */
  .efficiency-callout {
    border: 1px solid #22c55e !important;
    background: #f0fdf4 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    page-break-inside: avoid;
  }

  /* Software matrix */
  .sw-matrix {
    font-size: 8pt !important;
  }

  /* Footer */
  .site-footer {
    font-size: 7.5pt;
    text-align: center;
    border-top: 1px solid #d1d5db;
    padding: 0.5rem;
    page-break-before: avoid;
  }

  /* Page breaks */
  #ai-perf { page-break-before: always; }
  #software { page-break-before: always; }
  #use-cases { page-break-before: always; }
}

/* =====================================================
   FOOTER URL ROW
   ===================================================== */
.footer-url {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-sima);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer-url svg {
  flex-shrink: 0;
  opacity: 0.8;
}

.footer-url a {
  color: var(--color-sima);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.footer-url a:hover {
  border-bottom-color: var(--color-sima);
}

/* Print: make the URL prominent */
@media print {
  .footer-url {
    font-size: 9pt !important;
    color: #16a34a !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    margin-bottom: 0.4rem;
  }

  .footer-url a {
    color: #16a34a !important;
  }

  .footer-links {
    display: none !important;
  }
}