/* InSitu Stress Testing — industrial B2B conversion site */

:root {
  --ink: #0f1720;
  --ink-soft: #243041;
  --muted: #5b6775;
  --paper: #eef1f5;
  --cream: #f7f9fb;
  --card: #ffffff;
  --line: #c8d0da;
  --navy: #132337;
  --navy-deep: #0a1524;
  --steel: #3d536b;
  --accent: #c45c26;
  --accent-dark: #9a4519;
  --call: #0d6e4f;
  --call-ink: #ecfdf5;
  --focus: #2563eb;
  --ok: #166534;
  --max: 72rem;
  --header-h: 3.7rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); }
a:hover { color: var(--accent); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--call);
  color: var(--call-ink);
  padding: 0.4rem 0.75rem;
  z-index: 200;
  font-weight: 700;
}
.skip:focus { top: 0.5rem; }

h1, h2, h3, .wordmark {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-weight: 750;
  line-height: 1.2;
  color: var(--navy-deep);
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(1.65rem, 4.2vw, 2.35rem); margin: 0 0 0.45rem; }
h2 { font-size: clamp(1.25rem, 2.8vw, 1.65rem); margin: 2rem 0 0.55rem; }
h3 { font-size: 1.12rem; margin: 1.35rem 0 0.35rem; }

p { margin: 0 0 0.9rem; }
ul, ol { margin: 0 0 1rem 1.2rem; padding: 0; }
li { margin-bottom: 0.35rem; }

.wrap {
  width: min(calc(100% - 1.5rem), var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--navy-deep);
  color: #e8eef5;
  box-shadow: 0 1px 0 #0008;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: var(--header-h);
}

.wordmark {
  color: #fff;
  text-decoration: none;
  font-size: 0.98rem;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.wordmark:hover { color: #9fd4bf; }
.wordmark-mark {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 3px;
  background: linear-gradient(145deg, #4a6d8c, #1e3a55);
  border: 1px solid #7a97b0;
  flex-shrink: 0;
}

.header-call {
  display: inline-flex;
  align-items: center;
  background: var(--call);
  color: var(--call-ink);
  font-weight: 800;
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 4px;
  font-size: 0.9rem;
}
.header-call:hover { filter: brightness(1.06); color: var(--call-ink); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.4rem;
  border: 1px solid #ffffff55;
  background: transparent;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: #fff;
  position: relative;
  content: "";
}
.nav-toggle span::before { top: -6px; position: absolute; }
.nav-toggle span::after { top: 6px; position: absolute; }

.nav-panel { display: none; }
.site-header.is-open .nav-panel {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--navy);
  padding: 0.5rem 0.75rem 1rem;
  border-top: 1px solid #ffffff22;
  max-height: min(80vh, 36rem);
  overflow-y: auto;
}

.nav-list { list-style: none; margin: 0; padding: 0; }
.nav-list > li { margin: 0; }
.nav-list a,
.nav-list summary {
  color: #e8eef5;
  text-decoration: none;
  display: block;
  padding: 0.5rem 0.25rem;
  font-weight: 600;
  cursor: pointer;
}
.nav-list a:hover,
.nav-list summary:hover { color: #9fd4bf; }
.nav-list details { border-bottom: 1px solid #ffffff18; }
.nav-list details ul {
  list-style: none;
  margin: 0 0 0.4rem;
  padding: 0 0 0.3rem 0.6rem;
}
.nav-list details a {
  font-weight: 500;
  font-size: 0.93rem;
  padding: 0.32rem 0.25rem;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

@media (min-width: 980px) {
  .nav-toggle { display: none; }
  .nav-panel {
    display: block;
    position: static;
    background: none;
    padding: 0;
    border: 0;
    max-height: none;
    overflow: visible;
  }
  .nav-list {
    display: flex;
    align-items: center;
    gap: 0.05rem;
  }
  .nav-list details { border: 0; position: relative; }
  .nav-list summary { list-style: none; padding: 0.65rem 0.5rem; font-size: 0.92rem; }
  .nav-list summary::-webkit-details-marker { display: none; }
  .nav-list > li > a { padding: 0.65rem 0.5rem; font-size: 0.92rem; }
  .nav-list details ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 17rem;
    background: var(--cream);
    color: var(--ink);
    padding: 0.45rem 0;
    margin: 0;
    box-shadow: 0 8px 24px #0004;
    border: 1px solid var(--line);
    z-index: 90;
  }
  .nav-list details[open] ul,
  .nav-list details:hover ul { display: block; }
  .nav-list details a {
    color: var(--ink);
    padding: 0.38rem 0.9rem;
  }
  .nav-list details a:hover {
    background: var(--paper);
    color: var(--accent-dark);
  }
}

/* Hero */
.hero {
  background:
    radial-gradient(ellipse at 20% 0%, #1e3a55 0%, transparent 55%),
    linear-gradient(165deg, #0a1524 0%, #132337 55%, #1a2f45 100%);
  color: #e8eef5;
  padding: 1.35rem 0 1.6rem;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% 40%;
  height: 120%;
  background: repeating-linear-gradient(
    -35deg,
    transparent 0 14px,
    #ffffff06 14px 15px
  );
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero h1 { color: #fff; }
.hero .kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: #8fb4d4;
  margin: 0 0 0.5rem;
}
.hero .lede {
  color: #c5d4e3;
  font-weight: 600;
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
}
.hero p { color: #d5dee8; }
.hero a:not(.btn) { color: #9fd4bf; }

.hero-grid {
  display: grid;
  gap: 1.15rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.hero-form, .request-form {
  background: var(--cream);
  color: var(--ink);
  padding: 0.95rem 1rem 1.05rem;
  border-radius: 6px;
  border: 1px solid #0002;
  box-shadow: 0 8px 28px #0003;
}
.hero-form h2, .request-form h2 {
  margin: 0 0 0.45rem;
  font-size: 1.18rem;
  color: var(--navy-deep);
}
.hero-form > p, .request-form > p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 0.75rem;
}

@media (min-width: 860px) {
  .hero { padding: 2.1rem 0 2.3rem; }
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
    gap: 1.85rem;
  }
}

.page-hero {
  background: var(--navy);
  color: #e8eef5;
  padding: 1.25rem 0 1.2rem;
}
.page-hero h1 { color: #fff; }
.page-hero .lede { color: #b8c9da; font-weight: 600; margin: 0; }
.page-hero .kicker {
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.76rem;
  font-weight: 700;
  color: #8fb4d4;
  margin: 0 0 0.4rem;
}

.trust-strip {
  background: #1a2f45;
  color: #c5d4e3;
  padding: 0.7rem 0;
  font-size: 0.92rem;
  border-bottom: 1px solid #ffffff12;
}
.trust-strip .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.4rem;
}
.trust-strip strong { color: #fff; }

.layout {
  display: grid;
  gap: 1.25rem;
  padding: 1.25rem 0 2rem;
}
.layout.has-aside .aside { order: -1; }

@media (min-width: 900px) {
  .layout.has-aside {
    grid-template-columns: 1fr 19rem;
    align-items: start;
  }
  .layout.has-aside .aside {
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 0.75rem);
  }
}

.prose {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.1rem 1.05rem 1.45rem;
}
@media (min-width: 700px) {
  .prose { padding: 1.5rem 1.75rem 1.85rem; }
}

.form-row { margin-bottom: 0.65rem; }
.form-row label {
  display: block;
  font-weight: 650;
  font-size: 0.9rem;
  margin-bottom: 0.22rem;
}
.form-row input,
.form-row textarea {
  width: 100%;
  font: inherit;
  padding: 0.5rem 0.55rem;
  border: 1px solid #8a93a0;
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
}
.form-row textarea { min-height: 5rem; resize: vertical; }

.btn {
  display: inline-block;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 0.65rem 1rem;
  border-radius: 4px;
  text-decoration: none;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-call {
  background: var(--call);
  color: var(--call-ink);
}
.btn-call:hover { color: var(--call-ink); filter: brightness(1.05); }
.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid #ffffff66;
}
.btn-ghost:hover { background: #ffffff14; color: #fff; }

.form-note { font-size: 0.82rem; color: var(--muted); margin: 0.4rem 0 0; }
.form-thanks {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  color: var(--ok);
  padding: 0.85rem 0.9rem;
  border-radius: 4px;
  font-weight: 650;
}
.form-error { color: #9f1239; font-size: 0.9rem; margin: 0 0 0.5rem; }
.hidden { display: none !important; }

.section { padding: 1.5rem 0; }
.section-alt { background: var(--cream); border-block: 1px solid var(--line); }

.card-grid {
  display: grid;
  gap: 0.75rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.95rem 1rem 1.05rem;
  text-decoration: none;
  color: inherit;
  display: block;
}
a.card:hover {
  border-color: var(--steel);
  box-shadow: 0 2px 12px #0a152420;
}
.card h2, .card h3 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }
.card .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--steel);
  margin-bottom: 0.35rem;
}

@media (min-width: 640px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 960px) {
  .card-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
  .card-grid.cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
}

.process {
  display: grid;
  gap: 0.7rem;
}
@media (min-width: 720px) {
  .process { grid-template-columns: repeat(5, 1fr); }
}
.process-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.85rem 0.9rem;
}
.process-step .num {
  display: block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.process-step h3 { margin: 0 0 0.3rem; font-size: 1.02rem; }
.process-step p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }

.band {
  padding: 1.5rem 0 1.75rem;
}
.band-navy {
  background: var(--navy-deep);
  color: #d5dee8;
}
.band-navy h2 { color: #fff; }
.band-navy a { color: #9fd4bf; }

.notice {
  background: #fff8eb;
  border: 1px solid #e2c98a;
  padding: 0.85rem 1rem;
  border-radius: 4px;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0;
}
.faq summary {
  font-weight: 700;
  cursor: pointer;
  color: var(--navy-deep);
}
.faq details p { margin: 0.45rem 0 0.2rem; }

.cta-band {
  background: linear-gradient(135deg, #132337, #1e3a55);
  color: #e8eef5;
  padding: 1.6rem 0;
}
.cta-band h2 { color: #fff; margin-top: 0; }
.cta-band .lede { color: #b8c9da; }

.site-footer {
  background: var(--navy-deep);
  color: #b8c4d0;
  padding: 1.75rem 0 5.5rem;
  font-size: 0.93rem;
}
.site-footer a { color: #e8eef5; text-decoration: none; }
.site-footer a:hover { color: #9fd4bf; text-decoration: underline; }
.site-footer h2 {
  color: #fff;
  font-size: 1.02rem;
  margin: 0 0 0.5rem;
}
.foot-grid {
  display: grid;
  gap: 1.2rem;
}
@media (min-width: 800px) {
  .foot-grid { grid-template-columns: 1.3fr 1fr 1fr 1fr; }
  .site-footer { padding-bottom: 2rem; }
}
.foot-list { list-style: none; margin: 0; padding: 0; }
.foot-list li { margin: 0 0 0.28rem; }
.nap { margin-bottom: 0.75rem; }
.fineprint {
  margin-top: 1.4rem;
  padding-top: 0.9rem;
  border-top: 1px solid #ffffff22;
  font-size: 0.8rem;
  color: #8a96a5;
}

.sticky-call {
  display: block;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  background: var(--call);
  color: var(--call-ink);
  text-align: center;
  font-weight: 800;
  text-decoration: none;
  padding: 0.85rem 0.75rem;
  border-top: 2px solid #062e22;
  letter-spacing: 0.01em;
}
.sticky-call:hover { color: var(--call-ink); }
@media (min-width: 980px) {
  .sticky-call { display: none; }
}

.crumbs { font-size: 0.86rem; color: var(--muted); margin: 0 0 0.75rem; }
.crumbs a { color: var(--muted); }

.diagram {
  background: #0f1c2c;
  border: 1px solid #2a4058;
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0 1.25rem;
}
.diagram svg { width: 100%; height: auto; max-height: 180px; }

.deliverables {
  background: #f0f4f8;
  border-left: 3px solid var(--steel);
  padding: 0.85rem 1rem;
  margin: 1rem 0;
}
.deliverables h3 { margin-top: 0; }

.split {
  display: grid;
  gap: 1.1rem;
}
@media (min-width: 800px) {
  .split { grid-template-columns: 1.2fr 0.8fr; align-items: start; }
}

.error-page { padding: 2rem 0 3rem; }