/* ==========================================================================
   Coniker Systems™ style.css
   Brand tokens per MKT_Marketing_and_Communications_Manual_26.07.23, Section 2A
   ========================================================================== */

:root {
  --accent-gold:   #C8A550;
  --gold-deep:     #816524;
  --charcoal:      #333333;
  --charcoal-deep: #262626;
  --body-gray:     #4A4A4A;
  --subhead-gray:  #666666;
  --rule-gray:     #DEDEDE;
  --tint:          #F7F6F3;
  --bg-white:      #FFFFFF;

  --font-display: "Roboto Slab", Georgia, "Times New Roman", serif;
  --font-body:    "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-ui:      "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --shell:  1160px;
  --prose:  68ch;
  --gap:    40px;   /* manual minimum */
  --band:   88px;   /* standard section rhythm */
}

/* --- reset ------------------------------------------------------------- */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg-white);
  color: var(--body-gray);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.68;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--gold-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--accent-gold);
  outline-offset: 3px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--charcoal); color: #fff;
  padding: 12px 20px; z-index: 200;
  font-family: var(--font-ui); font-size: 14px;
}
.skip:focus { left: 0; }

/* --- type -------------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--charcoal);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.6vw, 3.15rem); }
h2 { font-size: clamp(1.55rem, 2.9vw, 2.1rem); }
h3 { font-size: 1.24rem; font-weight: 600; }
h4 { font-size: 1.02rem; font-weight: 600; }

p { margin: 0 0 20px; }
p:last-child { margin-bottom: 0; }

.prose { max-width: var(--prose); }
.lede {
  font-size: 1.19rem;
  line-height: 1.6;
  color: var(--subhead-gray);
}

/* Eyebrow: the recurring structural marker. Gold, uppercase, ruled. */
.eyebrow {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--gold-deep);
  margin: 0 0 14px;
  display: block;
}
.eyebrow::after {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  background: var(--accent-gold);
  margin-top: 12px;
}
.on-dark .eyebrow { color: var(--accent-gold); }

/* --- layout ------------------------------------------------------------ */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px;
}

.band { padding: var(--band) 0; }
.band--tight { padding: 56px 0; }
.band--tint { background: var(--tint); }

.band--dark {
  background: var(--charcoal);
  color: #D8D8D8;
}
.band--dark h1,
.band--dark h2,
.band--dark h3 { color: #FFFFFF; }
.band--dark a:not(.btn) { color: var(--accent-gold); }

/* Buttons keep their own colour inside dark bands. A bare `.band--dark a`
   rule scores (0,1,1) and silently outranks `.btn--primary` at (0,1,0),
   which rendered gold text on a gold fill. */
.band--dark .btn--primary { color: var(--charcoal); }
.band--dark .btn--primary:hover { color: #FFFFFF; }
.band--dark .btn--ghost { color: #FFFFFF; }
.band--dark .btn--ghost:hover { color: var(--accent-gold); }
.band--dark .btn--outline { color: var(--charcoal); }
.band--dark .btn--outline:hover { color: #FFFFFF; }
.band--dark .contact__mail { color: #FFFFFF; }
.band--dark .contact__mail:hover { color: var(--accent-gold); }

.rule {
  border: 0;
  border-top: 2px solid var(--accent-gold);
  width: 60px;
  margin: 0 0 var(--gap);
}

/* --- header ------------------------------------------------------------ */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-white);
  border-bottom: 2px solid var(--accent-gold);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 86px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.wordmark { display: block; line-height: 0; }
.wordmark img {
  height: 46px;
  width: auto;
  display: block;
}
.wordmark:hover { text-decoration: none; opacity: .82; }

.nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 0;
}
.nav a {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--body-gray);
  padding: 6px 0;
  display: block;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--charcoal); text-decoration: none; border-bottom-color: var(--rule-gray); }
.nav a[aria-current="page"] {
  color: var(--charcoal);
  font-weight: 700;
  border-bottom-color: var(--accent-gold);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rule-gray);
  padding: 9px 14px;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--charcoal);
  cursor: pointer;
}

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

.hero {
  background: var(--charcoal);
  color: #D8D8D8;
  padding: clamp(72px, 11vw, 132px) 0 clamp(64px, 9vw, 104px);
  position: relative;
  overflow: hidden;
}

/* Signature: distinct verticals resolving onto one shared baseline.
   Structural echo of coordinated difference. Decorative only. */
.hero::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: linear-gradient(
    to right,
    var(--accent-gold) 0 14%,
    rgba(200,165,80,.28) 14% 22%,
    var(--accent-gold) 22% 41%,
    rgba(200,165,80,.28) 41% 47%,
    var(--accent-gold) 47% 72%,
    rgba(200,165,80,.28) 72% 79%,
    var(--accent-gold) 79% 100%
  );
}

.hero h1 { color: #FFFFFF; max-width: 20ch; }
.hero .lede { color: #C9C9C9; max-width: 60ch; margin-top: 26px; }

.hero--page { padding: clamp(58px, 8vw, 92px) 0 clamp(50px, 7vw, 78px); }
.hero--page h1 { max-width: 24ch; }

/* --- buttons ----------------------------------------------------------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 38px;
}

.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 15px 28px;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn:hover { text-decoration: none; }

/* Gold fill with charcoal text. Manual specifies white text, which measures
   ~2.2:1 against Harmony Gold and fails the WCAG 2.2 AA target set in the
   same manual. Charcoal on gold measures ~4.9:1 and passes. */
.btn--primary {
  background: var(--accent-gold);
  color: var(--charcoal);
  border-color: var(--accent-gold);
}
.btn--primary:hover { background: var(--gold-deep); border-color: var(--gold-deep); color: #FFFFFF; }

.btn--ghost {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255,255,255,.45);
}
.btn--ghost:hover { border-color: var(--accent-gold); color: var(--accent-gold); }

.btn--outline {
  background: transparent;
  color: var(--charcoal);
  border-color: var(--charcoal);
}
.btn--outline:hover { background: var(--charcoal); color: #FFFFFF; }

/* --- grids and cards --------------------------------------------------- */

.grid {
  display: grid;
  gap: var(--gap);
  margin-top: var(--gap);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-white);
  border: 1px solid var(--rule-gray);
  border-top: 3px solid var(--accent-gold);
  padding: 32px 30px;
}
.card h3 { margin-bottom: 12px; }
.card p { font-size: 16px; }
.card p:last-child { margin-bottom: 0; }

.card--flat {
  border: 0;
  border-top: 2px solid var(--rule-gray);
  padding: 28px 0 0;
  background: none;
}
.card--flat h3 { color: var(--charcoal); }

.card__num {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-deep);
  display: block;
  margin-bottom: 10px;
}

/* --- split ------------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.32fr);
  gap: clamp(40px, 6vw, 88px);
  align-items: start;
}
.split--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.split__aside .eyebrow { margin-bottom: 16px; }
.split__aside h2 { margin-bottom: 0; }

/* --- metrics ----------------------------------------------------------- */

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--rule-gray);
  border: 1px solid var(--rule-gray);
  margin-top: var(--gap);
}
.metric { background: var(--bg-white); padding: 30px 26px; }
.metric__figure {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--charcoal);
  line-height: 1.05;
  display: block;
}
.metric__label {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--subhead-gray);
  margin-top: 12px;
  display: block;
  line-height: 1.5;
}

/* --- lists ------------------------------------------------------------- */

.ticks { list-style: none; padding: 0; margin: 0 0 20px; }
.ticks li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 13px;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0; top: .68em;
  width: 12px; height: 2px;
  background: var(--accent-gold);
}
.ticks li:last-child { margin-bottom: 0; }

/* --- diagram ----------------------------------------------------------- */

.diagram {
  margin-top: var(--gap);
  border: 1px solid var(--rule-gray);
  background: var(--bg-white);
  padding: 34px 28px;
}
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--subhead-gray);
  margin-top: 22px;
  text-align: center;
}

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

.item {
  border: 1px solid var(--rule-gray);
  border-top: 3px solid var(--accent-gold);
  display: flex;
  flex-direction: column;
}
.item__media {
  background: var(--tint);
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 230px;
  border-bottom: 1px solid var(--rule-gray);
}
.item__media img { max-height: 260px; width: auto; }
.item__body { padding: 30px; display: flex; flex-direction: column; flex: 1; }
.item__body p { font-size: 16px; }
.item__foot { margin-top: auto; padding-top: 24px; }
.item__kind {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-deep);
  display: block;
  margin-bottom: 10px;
}

/* Placeholder shown until the real asset is dropped into /assets */
.ph {
  width: 100%;
  min-height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px dashed var(--rule-gray);
  color: var(--subhead-gray);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  padding: 20px;
}

/* --- insights ---------------------------------------------------------- */

.post-list { list-style: none; padding: 0; margin: var(--gap) 0 0; }
.post-list li {
  border-top: 1px solid var(--rule-gray);
  padding: 26px 0;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 28px;
  align-items: baseline;
}
.post-list li:last-child { border-bottom: 1px solid var(--rule-gray); }
.post-list time {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--subhead-gray);
}
.post-list h3 { margin: 0 0 6px; font-size: 1.14rem; }
.post-list p { font-size: 15.5px; margin: 0; color: var(--subhead-gray); }

.notice {
  border-left: 3px solid var(--accent-gold);
  background: var(--tint);
  padding: 22px 26px;
  margin-top: var(--gap);
  font-size: 16px;
}

/* --- contact ----------------------------------------------------------- */

.contact { text-align: left; }
.contact__mail {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-weight: 700;
  color: #FFFFFF;
  word-break: break-word;
}
.contact__mail:hover { color: var(--accent-gold); }

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

.foot {
  background: var(--charcoal-deep);
  color: #9C9C9C;
  padding: 54px 0 40px;
  border-top: 2px solid var(--accent-gold);
}
.foot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}
.foot__logo {
  height: 40px;
  width: auto;
  display: block;
}
.foot__tag {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-top: 16px;
  display: block;
}
.foot nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 20px; }
.foot nav a {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: #C4C4C4;
}
.foot nav a:hover { color: var(--accent-gold); }
.foot__legal {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 13px;
  color: #8A8A8A;
}

/* --- responsive -------------------------------------------------------- */

@media (max-width: 940px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .split, .split--even { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 820px) {
  :root { --band: 64px; }
  body { font-size: 16.5px; }

  .nav-toggle { display: block; }
  .nav {
    display: none;
    width: 100%;
    order: 3;
    border-top: 1px solid var(--rule-gray);
    margin-top: 12px;
    padding-top: 8px;
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--rule-gray); }
  .nav a[aria-current="page"] { border-bottom-color: var(--accent-gold); }
  .masthead__inner { flex-wrap: wrap; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .post-list li { grid-template-columns: 1fr; gap: 8px; }
  .foot__grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .metrics { grid-template-columns: 1fr; }
  .shell { padding: 0 20px; }
  .actions .btn { width: 100%; text-align: center; }
}

/* --- print ------------------------------------------------------------- */

@media print {
  .masthead, .foot, .actions { display: none; }
  body { color: #000; font-size: 12pt; }
}

/* --- breadcrumb --------------------------------------------------------- */

.crumbs {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 20px;
  color: #9C9C9C;
}
.crumbs a { color: var(--accent-gold); }
.crumbs span[aria-hidden] { margin: 0 8px; color: #7A7A7A; }

/* Card media sizing for a wide screenshot rather than a book cover. */
.item__media--wide img { max-height: 170px; width: auto; }

/* --- article ------------------------------------------------------------ */

.archived {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--subhead-gray);
  border-bottom: 1px solid var(--rule-gray);
  padding-bottom: 18px;
  margin: 0 0 40px;
}

.article { max-width: 68ch; }
.article h2 {
  font-size: 1.42rem;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 2px solid var(--accent-gold);
}
.article h2:first-child { margin-top: 0; }
.article h3 {
  font-size: 1.1rem;
  margin-top: 34px;
  color: var(--charcoal);
}
.article .ticks { margin: 24px 0; }
.article a { text-decoration: underline; text-underline-offset: 2px; word-break: break-word; }

.article .tags {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--subhead-gray);
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--rule-gray);
}

.pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  margin-top: 56px;
  padding-top: 26px;
  border-top: 2px solid var(--accent-gold);
  font-family: var(--font-ui);
  font-size: 13px;
  max-width: 68ch;
}
.pager a { color: var(--gold-deep); }

.post-list h3 a { color: var(--charcoal); text-decoration: none; }
.post-list h3 a:hover { color: var(--gold-deep); text-decoration: underline; }

.diagram--dark {
  border-color: rgba(255,255,255,.18);
  background: transparent;
  margin-bottom: var(--gap);
}
.diagram--dark figcaption { color: #9C9C9C; }

.pointer {
  font-size: 15.5px;
  color: var(--subhead-gray);
  border-left: 2px solid var(--accent-gold);
  padding-left: 18px;
  margin-top: 26px;
}

/* --- chapter list ------------------------------------------------------- */

.chapters { list-style: none; padding: 0; margin: var(--gap) 0 0; }
.chapters li {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 26px;
  padding: 24px 0;
  border-top: 1px solid var(--rule-gray);
  align-items: baseline;
}
.chapters li:last-child { border-bottom: 1px solid var(--rule-gray); }
.ch__n {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--gold-deep);
}
.chapters h3 { font-size: 1.1rem; margin: 0 0 6px; }
.chapters p { font-size: 15.5px; margin: 0; color: var(--subhead-gray); max-width: 62ch; }

@media (max-width: 820px) {
  .chapters li { grid-template-columns: 1fr; gap: 6px; }
}

/* --- logo responsive ---------------------------------------------------- */

@media (max-width: 820px) {
  .wordmark img { height: 38px; }
  .foot__logo { height: 34px; }
}
@media (max-width: 400px) {
  .wordmark img { height: 32px; }
}

.ticks--dark li { color: #C9C9C9; }
.ticks--dark li strong { color: #FFFFFF; }

/* --- service blocks ----------------------------------------------------- */

.svc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.55fr);
  gap: clamp(32px, 5vw, 72px);
  padding: 40px 0;
  border-top: 2px solid var(--accent-gold);
  align-items: start;
}
.svc:first-of-type { margin-top: var(--gap); }
.svc:last-of-type { border-bottom: 2px solid var(--accent-gold); }
.svc__label h3 { font-size: 1.34rem; margin: 6px 0 10px; }
.svc__meta {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--subhead-gray);
  margin: 0;
  line-height: 1.6;
}
.svc__body p { font-size: 16.5px; }

@media (max-width: 820px) {
  .svc { grid-template-columns: 1fr; gap: 20px; padding: 32px 0; }
}

/* ==========================================================================
   Mobile corrections
   ========================================================================== */

/* Long URLs in archived posts must not push the layout sideways. */
body { overflow-wrap: break-word; }

/* Footer links were 12px with no padding, well under a 44px tap target. */
.foot nav ul { gap: 4px 20px; }
.foot nav a { display: inline-block; padding: 11px 0; }

.crumbs a { display: inline-block; padding: 4px 0; }

@media (max-width: 820px) {
  /* Diagrams are drawn at 900px. Rather than shrink them to 0.31x and make the
     labels illegible, let them keep a readable size and scroll horizontally. */
  .diagram {
    padding: 22px 0 20px;
    border-left: 0;
    border-right: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .diagram svg {
    min-width: 700px;
  }
  .diagram figcaption {
    position: sticky;
    left: 0;
    text-align: left;
    margin-top: 16px;
  }
  .diagram figcaption::after {
    content: " · scroll to see the full diagram";
    color: var(--gold-deep);
    text-transform: none;
    letter-spacing: 0;
  }
  .diagram--dark figcaption::after { color: var(--accent-gold); }

  /* Metric tiles read better as full-width rows once stacked. */
  .metric { padding: 24px 22px; }

  /* Buttons reach a comfortable tap size. */
  .btn { padding: 16px 26px; }
}

@media (max-width: 520px) {
  .diagram svg { min-width: 660px; }
  h1 { line-height: 1.16; }
  .lede { font-size: 1.08rem; }
  .metrics { border-left: 0; border-right: 0; }
}

/* --- grouped index ------------------------------------------------------ */

.grp {
  font-size: 1.34rem;
  margin: 72px 0 0;
  padding-top: 26px;
  border-top: 2px solid var(--accent-gold);
}
.grp:first-of-type { margin-top: 56px; }
.grp__note {
  margin-top: 14px;
  font-size: 16px;
  color: var(--subhead-gray);
  max-width: 68ch;
}
.grp + .post-list { margin-top: 26px; }

.card h3 a { color: var(--charcoal); text-decoration: none; }
.card h3 a:hover { color: var(--gold-deep); text-decoration: underline; }