/* Stratefuse site styles
   Layout: left-aligned editorial grid. Dark nav and footer, dark hero on the home page only.
   Body sections alternate warm paper and a slightly deeper tint; content groups sit on white panels.
   No rule lines. Brand colours only. */

:root {
  --ink: #16181B;
  --ink-soft: #24272C;
  --ink-line: #33373D;
  --ink-muted: #A9ABAE;
  --paper: #F6F5F2;
  --tint: #EAE8E2;
  --white: #FFFFFF;
  --text: #16181B;
  --text-2: #4A4E55;
  --blue: #236ADE;
  --blue-deep: #1A56B8;
  --field-line: #C9C6BF;

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Roboto, Arial, sans-serif;

  --measure: 62ch;
  --radius: 4px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --container: 74rem;
  --section: clamp(3.5rem, 7vw, 6rem);
  color-scheme: light;
}

/* Base */
*, *::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 { transition: none !important; animation: none !important; }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 0.15em; }
p, ul, ol { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem;
  padding: 0.6rem 0.9rem; background: var(--blue); color: var(--paper);
  border-radius: var(--radius); text-decoration: none; z-index: 20;
}
.skip-link:focus { top: 1rem; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

/* Type */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(2.375rem, 5.6vw, 4.25rem); letter-spacing: -0.03em; line-height: 1.02; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.375rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
.lede {
  font-size: clamp(1.125rem, 1.6vw, 1.3125rem);
  line-height: 1.5;
  color: var(--text-2);
  max-width: var(--measure);
  text-wrap: pretty;
}
.muted { color: var(--text-2); }
.text-link { font-weight: 600; }

/* Diamond marker */
.dm { width: 16px; height: 16px; flex: none; display: inline-block; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.85rem 1.3rem;
  border-radius: var(--radius);
  font-family: var(--font-body); font-weight: 600; font-size: 1rem; line-height: 1;
  text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}
.btn-blue { background: var(--blue); color: var(--paper); }
.btn-blue:hover { background: var(--blue-deep); }
.btn-paper { background: var(--paper); color: var(--ink); }
.btn-paper:hover { background: var(--white); }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: var(--ink-soft); }
.btn-ghost { background: transparent; color: inherit; border-color: currentColor; }
.hero .btn-ghost:hover { background: var(--ink-soft); }
.btn-sm { padding: 0.65rem 1rem; font-size: 0.9375rem; }

/* Header */
.site-header { background: var(--ink); color: var(--paper); position: relative; z-index: 10; }
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  min-height: 4.75rem;
}
.brand { display: inline-flex; align-items: center; }
.brand img { display: block; height: 26px; width: auto; }
.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav a { text-decoration: none; font-weight: 500; color: var(--ink-muted); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--paper); }
.nav .btn { color: var(--paper); }
.nav-toggle {
  display: none; align-items: center; gap: 0.5rem;
  background: transparent; color: var(--paper); border: 1px solid var(--ink-line);
  border-radius: var(--radius); padding: 0.55rem 0.8rem; font: inherit; font-weight: 500; cursor: pointer;
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ink);
    padding: 0.5rem var(--gutter) 1.25rem;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 0.8rem 0; }
  .nav .btn { margin-top: 0.75rem; }
}

/* Home hero: the one dark section in the body */
.hero { background: var(--ink); color: var(--paper); overflow: hidden; }
.hero .container {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 3rem; align-items: center;
  padding-block: clamp(3.5rem, 8vw, 7rem);
}
.hero h1 { max-width: 15ch; }
.hero .lede { margin-top: 1.5rem; color: var(--ink-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }
.hero-mark { justify-self: end; width: min(100%, 24rem); display: block; }
.hero-mark .ring { fill: var(--paper); opacity: 0.16; }
.hero-mark .core { fill: var(--blue); }
@media (max-width: 760px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-mark { display: none; }
}

/* Inner page heads: light */
.page-head { background: var(--tint); }
.page-head .container { padding-block: clamp(3rem, 6vw, 5rem); display: grid; gap: 1rem; }
.page-head h1 { font-size: clamp(2.25rem, 4.5vw, 3.5rem); max-width: 20ch; }

/* Sections */
.section { padding-block: var(--section); }
.section.tint { background: var(--tint); }
.section-head { display: grid; gap: 0.9rem; max-width: var(--measure); margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head p { color: var(--text-2); font-size: 1.125rem; text-wrap: pretty; }
.section-foot { margin-top: clamp(2rem, 4vw, 3rem); }

/* White panels: content groups on paper or tint */
.panel { background: var(--white); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.25rem); }
.stack { display: grid; gap: 1.25rem; }

/* Text columns */
.columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem 2.5rem; }
.columns-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.columns-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem; }
.col { display: grid; gap: 0.6rem; align-content: start; }
.col .dm { width: 18px; height: 18px; margin-bottom: 0.35rem; }
.col p { color: var(--text-2); text-wrap: pretty; }
.col a { text-decoration: none; }
.col a:hover { text-decoration: underline; }
@media (max-width: 900px) { .columns, .columns-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .columns, .columns-2, .columns-4 { grid-template-columns: 1fr; gap: 2rem; } }

/* Services grid: white panels */
.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.service {
  display: grid; gap: 0.75rem; align-content: start;
  padding: 1.75rem 1.5rem 2rem;
  background: var(--white); border-radius: var(--radius);
}
.service .dm { width: 18px; height: 18px; margin-bottom: 0.25rem; }
.service p { color: var(--text-2); text-wrap: pretty; }
.service a { text-decoration: none; }
.service a:hover { text-decoration: underline; }
@media (max-width: 900px) { .services { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .services { grid-template-columns: 1fr; } }

/* Steps: a real sequence, so numbered */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; }
.steps-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 2rem; }
.step { display: grid; gap: 0.6rem; align-content: start; }
.step-num {
  font-family: var(--font-display); font-weight: 700; font-size: 2.75rem; line-height: 1; letter-spacing: -0.03em;
  color: var(--blue); font-variant-numeric: tabular-nums; margin-bottom: 0.25rem;
}
.step p { color: var(--text-2); text-wrap: pretty; }
.step .out { color: var(--text); font-weight: 500; }
@media (max-width: 1100px) { .steps-5 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 760px) { .steps, .steps-5 { grid-template-columns: 1fr; gap: 2rem; } }

/* Two-column reason block */
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 3rem; align-items: start; }
.split .section-head { margin-bottom: 0; }
.reasons { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.75rem; }
.reasons li { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; }
.reasons .dm { margin-top: 0.4rem; }
.reasons strong {
  display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.01em;
  margin-bottom: 0.3rem;
}
.reasons p { color: var(--text-2); text-wrap: pretty; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 2rem; } }

/* Call to action band */
.cta { background: var(--blue); color: var(--paper); }
.cta .container {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2rem 3rem; align-items: center;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.cta h2 { font-size: clamp(1.625rem, 3vw, 2.25rem); max-width: 26ch; }
.cta p { margin-top: 0.85rem; max-width: var(--measure); color: var(--paper); opacity: 0.9; text-wrap: pretty; }
.cta-actions { display: grid; gap: 0.75rem; justify-items: start; }
.cta-actions .alt { font-size: 0.9375rem; }
@media (max-width: 760px) { .cta .container { grid-template-columns: 1fr; } }

/* Detail articles (services, capabilities): white panels */
.service-detail {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 2.5rem 3rem;
  background: var(--white); border-radius: var(--radius);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
}
.service-detail h2 { font-size: clamp(1.5rem, 2.4vw, 1.875rem); }
.service-detail .summary { margin-top: 0.9rem; color: var(--text-2); text-wrap: pretty; }
.service-detail .summary + .summary { margin-top: 0.6rem; }
.service-detail h3 { font-size: 0.95rem; font-family: var(--font-body); font-weight: 600; letter-spacing: 0; color: var(--text-2); }
.includes { list-style: none; margin: 0.75rem 0 0; padding: 0; display: grid; gap: 0.6rem; }
.includes li { display: grid; grid-template-columns: auto 1fr; gap: 0.75rem; align-items: start; }
.includes .dm { width: 12px; height: 12px; margin-top: 0.5rem; }
.bestfor { margin-top: 1.5rem; padding: 1rem 1.25rem; background: var(--paper); border-radius: var(--radius); color: var(--text-2); text-wrap: pretty; }
.bestfor strong { color: var(--text); }
@media (max-width: 760px) { .service-detail { grid-template-columns: 1fr; gap: 1.25rem; } }

/* Label and text pairs (pricing terms, deliverables) */
.terms { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.5rem; }
.terms li { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 0.4rem 2.5rem; align-items: start; }
.terms strong { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; line-height: 1.25; }
.terms p { color: var(--text-2); text-wrap: pretty; }
@media (max-width: 600px) { .terms li { grid-template-columns: 1fr; } }

/* FAQ: each question a white panel */
.faq { display: grid; gap: 0.5rem; }
.faq details { background: var(--white); border-radius: var(--radius); padding: 0 1.4rem; }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; gap: 1.5rem; align-items: baseline;
  padding: 1.05rem 0;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 500; color: var(--text-2); flex: none; }
.faq details[open] summary::after { content: "\2212"; }
.faq .answer { padding-bottom: 1.3rem; color: var(--text-2); max-width: var(--measure); text-wrap: pretty; }

/* Contact */
.contact { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 3.5rem; align-items: start; }
.form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: 0.4rem; }
.field label { font-weight: 500; }
.field input, .field textarea, .field select {
  width: 100%; font: inherit; color: var(--text);
  padding: 0.75rem 0.9rem; background: var(--white); border: 1px solid var(--field-line); border-radius: var(--radius);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: 2px solid var(--blue); outline-offset: 1px; border-color: var(--blue); }
.field textarea { min-height: 9rem; resize: vertical; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem; }
.form-note { font-size: 0.9rem; color: var(--text-2); text-wrap: pretty; }
.form-status { padding: 1rem 1.25rem; background: var(--tint); border-radius: var(--radius); }
.contact-aside { display: grid; gap: 1.75rem; align-content: start; }
.contact-block { display: grid; gap: 0.4rem; }
.contact-block h3 { font-size: 1.05rem; }
.contact-block p { color: var(--text-2); text-wrap: pretty; }
.contact-block .big { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--text); letter-spacing: -0.01em; word-break: break-word; }
.next-steps { margin: 0.4rem 0 0; padding-left: 1.25rem; color: var(--text-2); display: grid; gap: 0.35rem; }
@media (max-width: 760px) { .contact { grid-template-columns: 1fr; gap: 2.5rem; } }
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }

/* Long-form text (privacy) */
.prose { max-width: var(--measure); }
.prose h2 { font-size: 1.5rem; margin-top: 2.5rem; margin-bottom: 0.75rem; }
.prose p { margin-bottom: 1rem; text-wrap: pretty; }
.prose ul { margin: 0 0 1rem; padding-left: 1.25rem; display: grid; gap: 0.35rem; }
.prose .meta { color: var(--text-2); font-size: 0.95rem; }

/* Footer */
.site-footer { background: var(--ink); color: var(--ink-muted); padding-block: 3.5rem 2rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1.4fr); gap: 2.5rem; }
.footer-brand img { display: block; height: 24px; width: auto; }
.footer-brand p { margin-top: 1rem; max-width: 34ch; text-wrap: pretty; }
.footer-col h2 { font-family: var(--font-body); font-size: 0.95rem; font-weight: 600; letter-spacing: 0; color: var(--paper); margin-bottom: 0.9rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.site-footer a { color: var(--paper); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-bottom {
  margin-top: 3rem;
  display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; justify-content: space-between; font-size: 0.9rem;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

/* Not found */
.notfound .container { padding-block: clamp(4rem, 10vw, 8rem); display: grid; gap: 1.25rem; justify-items: start; }