/* ============================================================================
   KDD Brands — corporate site

   Reference-led, not concept-led. Surveyed real brand-holding company sites
   (Pattern Brands, Thrasio) and followed what they actually do:

     - plain-English hero stating what the company does, not its registration
     - sans-serif throughout; no serif body, no monospace furniture
     - 4–6 simple sections, generous vertical rhythm
     - cards as the visual device
     - company registration details demoted to the footer, small
     - one accent colour, used for links and emphasis only

   Two earlier passes failed by designing from a concept ("a filed record")
   rather than from reference. If you are tempted to add a seal, a guilloche,
   monospace labels or § numbering: that was tried, and it read as a share
   certificate rather than a company.

   No webfonts — the CSP forbids external requests and the legal pages must
   render instantly for a reviewer.
   ========================================================================= */

:root {
  --bg:        #ffffff;
  --bg-alt:    #f7f8f9;
  --ink:       #14181d;
  --ink-2:     #4d5761;
  --ink-3:     #6b7681;
  --line:      #e3e6e9;
  --line-2:    #cfd4d9;

  /* One accent. A considered navy rather than the default SaaS blue —
     professional, and it does not read as a template. */
  --accent:    #14507d;
  --accent-2:  #0e3d61;
  --accent-bg: #eef4f9;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 42rem;
  --max:     70rem;
  --pad:     clamp(1.25rem, 4vw, 2.5rem);
  --radius:  10px;
}

*, *::before, *::after { box-sizing: border-box; }

html { background: var(--bg); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: var(--pad); }
.prose { max-width: var(--measure); }

/* Long-form documents: a narrower container the text column actually fills.
   Left-aligning a 42rem measure inside a 70rem wrap left half the viewport
   empty — the standard legal/docs answer is to narrow the container instead. */
body.doc .wrap { max-width: 56rem; }
body.doc .prose { max-width: none; }
body.doc .page-head .lede { max-width: 60ch; }
/* Marketing sections want air; a document wants to start reading. */
body.doc section { padding-block: clamp(2rem, 4vw, 3rem) clamp(3rem, 6vw, 4.5rem); }

/* ------------------------------------------------------------------ nav -- */

.masthead {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(1.6) blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  min-height: 4.25rem;
}

.wordmark {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-decoration: none;
}

.nav { display: flex; gap: 2rem; flex-wrap: wrap; font-size: 0.94rem; }

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 500;
  transition: color 120ms ease;
}
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--accent); }

/* ----------------------------------------------------------------- hero -- */

.hero { padding-block: clamp(4rem, 10vw, 7.5rem) clamp(3rem, 7vw, 5rem); }

.hero h1 {
  font-size: clamp(2.25rem, 5.2vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1.35rem;
  max-width: 17ch;
}

.hero .lede {
  font-size: clamp(1.08rem, 1.8vw, 1.3rem);
  color: var(--ink-2);
  max-width: 44ch;
  margin: 0 0 2rem;
  line-height: 1.6;
}

.hero-actions { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 120ms ease;
}
.btn:hover { background: var(--accent-2); color: #fff; }

.btn-text { font-weight: 600; font-size: 0.98rem; color: var(--accent); text-decoration: none; }
.btn-text:hover { text-decoration: underline; }

/* ------------------------------------------------------- page head (docs) -- */

.page-head { padding-block: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 3vw, 2.25rem); border-bottom: 1px solid var(--line); }

.page-head h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 0.85rem;
  max-width: 24ch;
}

.page-head .lede { color: var(--ink-2); max-width: 52ch; margin: 0; font-size: 1.05rem; }

.crumb {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-3);
  margin: 0 0 1rem;
  letter-spacing: 0;
  text-transform: none;
}
.crumb a { color: var(--ink-3); text-decoration: none; }
.crumb a:hover { color: var(--accent); }

/* ------------------------------------------------------------- sections -- */

section { padding-block: clamp(3.5rem, 7vw, 5.5rem); }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.section-head { max-width: 44ch; margin-bottom: 2.5rem; }
.section-head h2 { margin-top: 0; }
.section-head p { color: var(--ink-2); margin: 0; }

h2 {
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.9rem;
}
h2:first-child { margin-top: 0; }

h3 { font-size: 1.1rem; font-weight: 650; letter-spacing: -0.01em; margin: 2rem 0 0.5rem; }
h4 { font-size: 0.98rem; font-weight: 600; color: var(--accent); margin: 1.75rem 0 0.4rem; }

p { margin: 0 0 1.1rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--accent-2); }

strong { font-weight: 650; color: var(--ink); }

ul, ol { margin: 0 0 1.1rem; padding-left: 1.35rem; }
li { margin-bottom: 0.5rem; }
li::marker { color: var(--ink-3); }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  overflow-wrap: anywhere;
}

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-2);
  font-size: 0.97rem;
}
blockquote p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- cards -- */

.cards { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 46rem) { .cards-2 { grid-template-columns: repeat(2, 1fr); } }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card h3 { margin: 0; font-size: 1.15rem; }
.card p { margin: 0; color: var(--ink-2); font-size: 0.96rem; }
.card .tag {
  align-self: flex-start;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}
.card ul { margin: 0.4rem 0 0; padding-left: 1.15rem; font-size: 0.94rem; color: var(--ink-2); }

a.card { text-decoration: none; color: inherit; transition: border-color 120ms ease, box-shadow 120ms ease; }
a.card:hover { border-color: var(--line-2); box-shadow: 0 2px 14px rgba(20, 24, 29, 0.06); }

/* --------------------------------------------------------- feature card -- */

.feature {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 54rem) { .feature { grid-template-columns: 1.1fr 1fr; } }

.feature-body { padding: clamp(1.75rem, 4vw, 2.75rem); }
.feature-body h3 { margin: 0 0 0.6rem; font-size: 1.4rem; letter-spacing: -0.02em; }
.feature-body p { color: var(--ink-2); margin: 0 0 1.25rem; }

.feature-list {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: grid;
  gap: 0.85rem;
  align-content: start;
}
@media (min-width: 54rem) { .feature-list { border-top: 0; border-left: 1px solid var(--line); } }

.feature-list div { font-size: 0.94rem; }
.feature-list strong { display: block; font-weight: 600; }
.feature-list span { color: var(--ink-3); }

/* --------------------------------------------------------------- tables -- */

.table-scroll { overflow-x: auto; margin: 1.5rem 0; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; min-width: 34rem; font-size: 0.9rem; }
th, td { text-align: left; vertical-align: top; padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); }
th { font-weight: 600; background: var(--bg-alt); white-space: nowrap; }
td { color: var(--ink-2); }
td strong { color: var(--ink); }
tbody tr:last-child td { border-bottom: 0; }

/* ------------------------------------------------------------ key/value -- */

.facts { margin: 1.75rem 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; background: var(--bg-alt); }
.facts dl { margin: 0; display: grid; gap: 0.85rem 1.5rem; }
@media (min-width: 38rem) { .facts dl { grid-template-columns: max-content 1fr; } }
.facts dt { font-size: 0.86rem; font-weight: 600; color: var(--ink-3); }
.facts dd { margin: 0; font-size: 0.95rem; }

/* ------------------------------------------------------------ link list -- */

.link-list { list-style: none; padding: 0; margin: 1.5rem 0 0; border-top: 1px solid var(--line); }
.link-list li { margin: 0; border-bottom: 1px solid var(--line); }
.link-list a {
  display: grid; gap: 0.25rem 2rem; padding: 1.15rem 0;
  text-decoration: none; color: var(--ink); align-items: baseline;
}
@media (min-width: 46rem) { .link-list a { grid-template-columns: minmax(0, 17rem) minmax(0, 1fr); } }
.link-list a > span:first-child { font-weight: 600; }
.link-list .desc { color: var(--ink-2); font-size: 0.92rem; }
.link-list a:hover > span:first-child { color: var(--accent); }

/* ----------------------------------------------------------------- note -- */

.note { background: var(--accent-bg); border-radius: var(--radius); padding: 1.15rem 1.35rem; margin: 1.75rem 0; font-size: 0.96rem; color: var(--ink-2); }
.note p:last-child { margin-bottom: 0; }
.note .note-title { display: block; font-weight: 650; color: var(--ink); margin-bottom: 0.35rem; }

/* ------------------------------------------------------------------ toc -- */

.toc { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem 1.5rem; margin: 2rem 0; }
.toc h2 { font-size: 0.86rem; font-weight: 600; color: var(--ink-3); margin: 0 0 0.75rem; letter-spacing: 0; }
.toc ol { margin: 0; padding-left: 1.2rem; columns: 2; column-gap: 2.5rem; font-size: 0.92rem; }
.toc li { margin-bottom: 0.3rem; break-inside: avoid; }
@media (max-width: 42rem) { .toc ol { columns: 1; } }

/* --------------------------------------------------------------- footer -- */

.site-foot { border-top: 1px solid var(--line); background: var(--bg-alt); padding-block: 3.5rem 2.5rem; margin-top: 4rem; }

.foot-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.foot-brand { max-width: 22rem; }
.foot-brand .wordmark { font-size: 1.05rem; }
.foot-brand p { color: var(--ink-3); font-size: 0.9rem; margin: 0.6rem 0 0; }

.foot-cols h2 { font-size: 0.82rem; font-weight: 650; color: var(--ink); margin: 0 0 0.85rem; letter-spacing: 0; }
.foot-cols ul { list-style: none; padding: 0; margin: 0; font-size: 0.92rem; }
.foot-cols li { margin-bottom: 0.55rem; }
.foot-cols a { color: var(--ink-2); text-decoration: none; }
.foot-cols a:hover { color: var(--accent); text-decoration: underline; }

.colophon {
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.84rem;
  color: var(--ink-3);
}
.colophon p { margin: 0; max-width: 58ch; }

/* ----------------------------------------------------------------- form -- */

.form-cols { display: grid; gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
@media (min-width: 56rem) { .form-cols { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); } }

.contact-form { display: flex; flex-direction: column; gap: 1.15rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-size: 0.9rem; font-weight: 600; color: var(--ink); }

.field input, .field textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  width: 100%;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.field textarea { resize: vertical; min-height: 9rem; line-height: 1.6; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-3); }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.field input:user-invalid, .field textarea:user-invalid { border-color: #b3261e; }

.contact-form button {
  font-family: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: var(--radius);
  padding: 0.8rem 1.6rem;
  cursor: pointer;
  align-self: flex-start;
  transition: background 120ms ease;
}
.contact-form button:hover { background: var(--accent-2); }

.form-note { font-size: 0.86rem; color: var(--ink-3); margin: 0; max-width: 44ch; }

/* Honeypot — reachable by a bot parsing the DOM, never seen or focusable by a
   person, so display:none is deliberately NOT used. */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.contact-aside h2 { font-size: 0.86rem; font-weight: 650; color: var(--ink-3); margin: 0 0 0.9rem; letter-spacing: 0; }
.contact-aside > h2 ~ h2 { margin-top: 2.5rem; }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { display: flex; flex-direction: column; gap: 0.1rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.contact-list li:first-child { padding-top: 0; }
.contact-list a { font-weight: 500; font-size: 0.96rem; }
.contact-list span { font-size: 0.86rem; color: var(--ink-3); }
.contact-list span a { font-size: inherit; font-weight: inherit; }
.aside-note { font-size: 0.86rem; color: var(--ink-3); margin: 1rem 0 0; }

/* --------------------------------------------------------------- result -- */

.result { padding-block: clamp(4rem, 10vw, 6.5rem); max-width: 40rem; }
.result .mark { font-size: 2rem; color: var(--accent); margin: 0 0 1rem; }
.result h1 { font-size: clamp(1.9rem, 4vw, 2.5rem); font-weight: 700; letter-spacing: -0.025em; margin: 0 0 0.9rem; }
.result p { color: var(--ink-2); margin: 0 0 1rem; }

/* -------------------------------------------------------------- utility -- */

.updated { font-size: 0.86rem; color: var(--ink-3); }

.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: var(--pad); top: 0.5rem; z-index: 30;
  background: var(--accent); color: #fff;
  padding: 0.55rem 0.9rem; border-radius: var(--radius);
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media print {
  .masthead, .foot-cols, .toc { display: none; }
  body { font-size: 11pt; color: #000; }
  a { color: #000; text-decoration: none; }
  .site-foot { background: none; }
}