:root {
  --bg: #F3F6FB;
  --surface: #FFFFFF;
  --surface-alt: #EAF0F9;
  --border: #DCE4F0;
  --text: #2A3446;
  --text-muted: #7C8AA3;
  --primary: #5B8DEF;
  --primary-ink: #FFFFFF;
  --success: #6DBE9F;
  --serif: Iowan Old Style, "Palatino Linotype", Palatino, Georgia, Cambria, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171B23;
    --surface: #1F2530;
    --surface-alt: #232A35;
    --border: #333D4D;
    --text: #E6EAF2;
    --text-muted: #94A1B8;
    --primary: #7BA5F5;
    --primary-ink: #12161C;
    --success: #7FCCAC;
  }
}
:root[data-theme="dark"] {
  --bg: #171B23; --surface: #1F2530; --surface-alt: #232A35; --border: #333D4D;
  --text: #E6EAF2; --text-muted: #94A1B8; --primary: #7BA5F5; --primary-ink: #12161C; --success: #7FCCAC;
}
:root[data-theme="light"] {
  --bg: #F3F6FB; --surface: #FFFFFF; --surface-alt: #EAF0F9; --border: #DCE4F0;
  --text: #2A3446; --text-muted: #7C8AA3; --primary: #5B8DEF; --primary-ink: #FFFFFF; --success: #6DBE9F;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.grid-veil {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 900px 500px at 50% 0%, black, transparent 70%);
          mask-image: radial-gradient(ellipse 900px 500px at 50% 0%, black, transparent 70%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 30px; height: 30px; border-radius: 8px; display: block; }
.brand span { font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em; }

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.lang-toggle button {
  appearance: none;
  border: none;
  background: var(--surface);
  color: var(--text-muted);
  padding: 7px 14px;
  cursor: pointer;
  font: inherit;
}
.lang-toggle button.active { background: var(--primary); color: var(--primary-ink); }
.lang-toggle button:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }

main {
  max-width: 700px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  position: relative;
}

.doc-head { margin-bottom: 40px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 14px;
}
h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2.3rem;
  line-height: 1.15;
  margin: 0 0 12px;
  text-wrap: balance;
}
.dek { color: var(--text-muted); font-size: 1rem; margin: 0; max-width: 46ch; }
.meta {
  display: flex;
  gap: 18px;
  margin-top: 20px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.meta b { color: var(--text); font-weight: 600; }

.headline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 24px;
  margin: 32px 0 40px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.headline-card .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--success);
  margin-top: 7px;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 20%, transparent);
}
.headline-card p { margin: 0; font-size: 0.98rem; }
.headline-card strong { font-weight: 700; }

nav.toc {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  margin-bottom: 48px;
}
nav.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 20px;
  counter-reset: toc;
}
nav.toc li { counter-increment: toc; }
nav.toc a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  display: flex;
  gap: 8px;
}
nav.toc a:hover { color: var(--primary); }
nav.toc a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--primary);
  opacity: 0.7;
}

section { margin-bottom: 40px; scroll-margin-top: 76px; }
section h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.3rem;
  margin: 0 0 14px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
section h2 .num {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 500;
}
/* Sub-heading inside a section. Deliberately not numbered: the numbers are
   the table of contents' anchors, and adding a second level to them would
   make the contents list wrong. */
section h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.05rem;
  margin: 26px 0 10px;
  color: var(--text);
}
section p { margin: 0 0 14px; font-size: 0.97rem; }
section p:last-child { margin-bottom: 0; }
section ul { margin: 0 0 14px; padding-left: 20px; }
section li { margin-bottom: 6px; font-size: 0.97rem; }

.fact-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.fact-table th, .fact-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.fact-table th {
  background: var(--surface-alt);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.fact-table tr:last-child td { border-bottom: none; }
.fact-table td.status-none { color: var(--success); font-weight: 600; }

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
/* The controller's postal address. Upright, not the browser's default
   italic -- it is a legal identification, not an aside. */
.contact-card address {
  font-style: normal;
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 2px solid var(--primary);
  line-height: 1.7;
}
footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
}

[data-lang-content="tr"] { display: none; }
:root[data-active-lang="tr"] [data-lang-content="en"] { display: none; }
:root[data-active-lang="tr"] [data-lang-content="tr"] { display: block; }
:root[data-active-lang="tr"] span[data-lang-content="tr"] { display: inline; }

@media (max-width: 560px) {
  nav.toc ol { grid-template-columns: 1fr; }
  h1 { font-size: 1.85rem; }
  main { padding: 40px 18px 72px; }
}