/* Supreme Digital Ventures Ltd, supremedigital.uk
   Warm paper, near-black ink, one navy accent. Deliberately unlike Pinchr's
   cream and forest: these are two different companies and should not look
   like one template with the colours swapped. */

:root {
  --paper: #f5f4f1;
  --surface: #ffffff;
  --surface-sunk: #edebe5;
  --ink: #14171a;
  --ink-soft: #3f464d;
  /* Dark enough to clear 4.5:1 on --paper at 14px, which the footer's
     registration line is set in. */
  --ink-faint: #5b6269;
  --line: #e2dfd8;
  --line-strong: #cfcbc1;
  --navy: #1f4b91;
  --navy-bright: #2f66be;
  --dark: #0d131c;
  --dark-soft: #1a2330;
  --on-dark: #f3f5f8;
  --on-dark-dim: #a8b3c1;
  --focus: #2f66be;
  --wrap: 74rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
.wordmark-name,
.email,
.footer-name {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  font-weight: 500;
  letter-spacing: -0.015em;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--navy);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--navy-bright);
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--navy);
  color: #fff;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.75rem;
}

.skip {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  padding: 0.5rem 0.85rem;
  background: var(--surface);
  color: var(--ink);
  transform: translateY(-250%);
}

.skip:focus {
  transform: none;
}

/* ------------------------------------------------------------- masthead -- */

.mast {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--dark);
  color: var(--on-dark);
  border-bottom: 1px solid #000;
}

.mast-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  min-height: 4.5rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.wordmark {
  color: var(--on-dark);
  text-decoration: none;
  line-height: 1.25;
}

.wordmark-name {
  display: block;
  font-size: 1.2rem;
}

.wordmark-sub {
  display: block;
  margin-top: 0.1rem;
  color: var(--on-dark-dim);
  font-size: 0.74rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.mast-nav {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
}

.mast-nav a {
  color: var(--on-dark);
  font-size: 0.95rem;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.mast-nav a:hover {
  border-bottom-color: var(--on-dark);
  color: var(--on-dark);
}

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

.btn {
  display: inline-block;
  padding: 0.7rem 1.35rem;
  font-size: 0.97rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.btn-light {
  background: var(--on-dark);
  color: var(--dark);
}

.btn-light:hover {
  background: #fff;
  color: var(--dark);
}

.btn-dark {
  background: var(--ink);
  color: var(--paper);
}

.btn-dark:hover {
  background: var(--navy);
  color: #fff;
}

.btn-plain {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}

.btn-plain:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: rgba(0, 0, 0, 0.03);
}

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

.hero {
  padding: 5.5rem 0 4rem;
  background:
    radial-gradient(70rem 30rem at 8% -10%, rgba(31, 75, 145, 0.09), transparent 70%),
    var(--paper);
}

.kicker {
  margin: 0 0 1rem;
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 30ch;
  font-size: clamp(2.35rem, 5.2vw, 4.1rem);
  line-height: 1.06;
}

.lede {
  max-width: 44rem;
  margin: 1.6rem 0 0;
  color: var(--ink-soft);
  font-size: 1.18rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2.25rem 0 0;
}

/* --------------------------------------------------------------- bands -- */

.band {
  padding: 4.5rem 0;
  border-top: 1px solid var(--line);
}

.band-alt {
  background: var(--surface-sunk);
}

.band-head {
  max-width: 44rem;
  margin-bottom: 3rem;
}

h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.1vw, 2.6rem);
  line-height: 1.12;
}

.band-lede {
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

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

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.cards-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1.9rem;
  background: var(--surface);
  border: 1px solid var(--line);
}

.card-num {
  margin: 0 0 1.1rem;
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

.card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.5rem;
}

.card > p {
  margin: 0;
  color: var(--ink-soft);
}

.card ul {
  margin: 1.35rem 0 0;
  padding: 1.35rem 0 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.card li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.99rem;
}

.card li:last-child {
  margin-bottom: 0;
}

.card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.4rem;
  height: 1px;
  background: var(--line-strong);
}

.card-quiet {
  background: var(--surface);
}

.card-quiet h3 {
  margin-top: 0;
}

/* --------------------------------------------------------------- stack -- */

.stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 3rem;
}

.stack-group h3 {
  margin: 0 0 1rem;
  padding-bottom: 0.65rem;
  font-size: 1.2rem;
  border-bottom: 1px solid var(--line-strong);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 0.35rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.stack-note {
  max-width: 46rem;
  margin: 2.75rem 0 0;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line-strong);
  color: var(--ink-soft);
}

/* --------------------------------------------------------------- steps -- */

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.steps li {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 0 1.5rem;
  padding: 1.9rem 0;
  border-bottom: 1px solid var(--line);
}

.step-num {
  margin: 0.35rem 0 0;
  color: var(--navy);
  font-size: 0.85rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

.steps h3 {
  margin: 0 0 0.5rem;
  font-size: 1.45rem;
}

.steps p {
  max-width: 48rem;
  margin: 0;
  color: var(--ink-soft);
}

/* ----------------------------------------------------------------- faq -- */

.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  padding: 1.25rem 2.5rem 1.25rem 0;
  position: relative;
  cursor: pointer;
  font-size: 1.12rem;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "";
  position: absolute;
  right: 0.6rem;
  top: 1.75rem;
  width: 0.62rem;
  height: 0.62rem;
  border-right: 1.5px solid var(--ink-faint);
  border-bottom: 1.5px solid var(--ink-faint);
  transform: rotate(45deg);
  transition: transform 140ms ease;
}

.faq details[open] summary::after {
  transform: rotate(-135deg);
}

.faq summary:hover {
  color: var(--navy);
}

.faq details p {
  max-width: 48rem;
  margin: 0 0 1.35rem;
  color: var(--ink-soft);
}

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

.contact {
  padding: 5rem 0;
  background: var(--dark);
  color: var(--on-dark);
  background-image:
    radial-gradient(60rem 26rem at 85% 110%, rgba(47, 102, 190, 0.22), transparent 70%);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3rem;
  align-items: start;
}

.kicker-light {
  color: #8fb2e8;
}

.contact h2 {
  margin: 0 0 1rem;
  max-width: 24ch;
}

.contact-lede {
  max-width: 34rem;
  color: var(--on-dark-dim);
  font-size: 1.08rem;
}

.email {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--on-dark);
  font-size: clamp(1.5rem, 2.9vw, 2.15rem);
  line-height: 1.2;
  text-decoration-thickness: 1px;
}

.email:hover {
  color: #fff;
}

.contact-meta {
  padding-top: 0.5rem;
  color: var(--on-dark-dim);
  font-size: 0.97rem;
}

.contact-meta h3 {
  margin: 0 0 0.75rem;
  color: var(--on-dark);
  font-size: 1.15rem;
}

.contact-meta p {
  margin: 0.2rem 0;
}

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

footer {
  padding: 3rem 0 3.5rem;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.footer-inner {
  display: grid;
  gap: 1.5rem;
}

.footer-name {
  margin: 0 0 0.25rem;
  color: var(--ink);
  font-size: 1.15rem;
}

.footer-inner > div p:last-child {
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.footer-legal {
  margin: 0;
  max-width: 52rem;
  color: var(--ink-faint);
  font-size: 0.88rem;
}

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

@media (max-width: 1000px) {
  .mast-nav {
    gap: 1.2rem;
  }
}

@media (max-width: 820px) {
  .wrap {
    padding: 0 1.25rem;
  }

  /* Two rows of masthead pinned to the top of a phone screen costs more than
     it is worth. Below this width it scrolls away like any other section. */
  .mast {
    position: static;
  }

  html {
    scroll-padding-top: 1rem;
  }

  .mast-inner {
    flex-wrap: wrap;
    gap: 0.9rem 1.25rem;
  }

  .wordmark-name {
    font-size: 1.1rem;
  }

  .mast-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    -webkit-overflow-scrolling: touch;
  }

  .mast-nav a {
    white-space: nowrap;
  }

  .mast-cta {
    margin-left: auto;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
  }

  .hero {
    padding: 3.25rem 0 2.75rem;
  }

  .band {
    padding: 3.25rem 0;
  }

  .band-head {
    margin-bottom: 2rem;
  }

  .cards,
  .cards-three,
  .stack {
    grid-template-columns: 1fr;
  }

  .stack {
    gap: 2rem;
  }

  .card {
    padding: 1.5rem;
  }

  .steps li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    padding: 1.5rem 0;
  }

  .step-num {
    margin-top: 0;
  }

  .contact {
    padding: 3.25rem 0;
  }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .contact-meta {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
  }
}

@media (max-width: 480px) {
  .actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}