/* Midstreamly — msl.css
   Industrial dark-palette condition monitoring site
   Brand prefix: msl
   Palette: deep charcoal-navy + safety amber + steel data blue
*/

/* ==========================================
   CSS Custom Properties
   ========================================== */
:root {
  --msl-bg-primary:    #0F1923;
  --msl-bg-secondary:  #1A2535;
  --msl-bg-surface:    #1E2D3E;
  --msl-accent:        #F59E0B;
  --msl-accent-dark:   #D97706;
  --msl-text-primary:  #F1F5F9;
  --msl-text-secondary:#94A3B8;
  --msl-text-muted:    #64748B;
  --msl-border:        #2A3A4E;
  --msl-success:       #10B981;
  --msl-warning:       #FBBF24;
  --msl-data-blue:     #38BDF8;
  --msl-data-green:    #34D399;

  --msl-radius-sm:  4px;
  --msl-radius:     6px;
  --msl-shadow:     0 4px 16px rgba(0,0,0,0.4);
  --msl-shadow-sm:  0 2px 8px rgba(0,0,0,0.3);

  --msl-font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --msl-font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --msl-font-mono:    'Roboto Mono', 'Courier New', monospace;

  --msl-nav-h: 64px;
  --msl-container: 1200px;
  --msl-container-narrow: 760px;
}

/* ==========================================
   Reset & Base
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--msl-bg-primary);
  color: var(--msl-text-primary);
  font-family: var(--msl-font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Light-top variant for blog detail + legal pages */
body.msl-page--light-top {
  background-color: var(--msl-bg-primary);
}

body.msl-page--light-top .msl-article-body,
body.msl-page--light-top .msl-legal-body {
  background-color: #F8FAFC;
  color: #1E293B;
}

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

a {
  color: var(--msl-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--msl-accent-dark);
}

ul, ol {
  list-style: none;
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--msl-font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--msl-text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--msl-text-secondary);
  line-height: 1.75;
}

.msl-mono {
  font-family: var(--msl-font-mono);
  font-size: 0.875rem;
  color: var(--msl-data-blue);
}

code, pre {
  font-family: var(--msl-font-mono);
}

/* ==========================================
   Layout Utilities
   ========================================== */
.msl-container {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-container--narrow {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.msl-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.msl-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .msl-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .msl-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .msl-grid-2,
  .msl-grid-3,
  .msl-grid-4 { grid-template-columns: 1fr; }
}

/* ==========================================
   Navigation
   ========================================== */
.msl-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--msl-bg-primary);
  border-bottom: 1px solid var(--msl-border);
  height: var(--msl-nav-h);
}

.msl-nav__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.msl-nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
}

.msl-nav__logo-mark {
  height: 32px;
  width: auto;
  max-width: 200px;
  flex-shrink: 0;
}

.msl-nav__logo-wordmark {
  font-family: var(--msl-font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--msl-text-primary);
  letter-spacing: -0.02em;
}

.msl-nav__logo-wordmark:hover {
  color: var(--msl-text-primary);
}

.msl-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.msl-nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--msl-text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--msl-radius-sm);
  transition: color 0.2s, background-color 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.msl-nav__link:hover,
.msl-nav__link--active {
  color: var(--msl-text-primary);
  background-color: var(--msl-bg-surface);
}

.msl-nav__cta {
  background-color: var(--msl-accent);
  color: #0F1923;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--msl-radius-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s, transform 0.15s;
  flex-shrink: 0;
}

.msl-nav__cta:hover {
  background-color: var(--msl-accent-dark);
  color: #0F1923;
  transform: translateY(-1px);
}

.msl-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.msl-nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--msl-text-primary);
  transition: transform 0.2s, opacity 0.2s;
}

/* Mobile nav panel — always hidden, shown via JS toggle */
.msl-nav__mobile {
  display: none;
  position: absolute;
  top: var(--msl-nav-h);
  left: 0;
  right: 0;
  background-color: var(--msl-bg-secondary);
  flex-direction: column;
  align-items: stretch;
  padding: 1rem;
  border-bottom: 1px solid var(--msl-border);
  gap: 0.25rem;
  z-index: 99;
}

.msl-nav__mobile--open {
  display: flex;
}

@media (max-width: 768px) {
  .msl-nav__links {
    display: none;
  }

  .msl-nav__link {
    padding: 0.75rem 1rem;
  }

  .msl-nav__cta {
    display: none;
  }

  .msl-nav__hamburger {
    display: flex;
  }
}

/* ==========================================
   Logo SVG inline (logo mark)
   ========================================== */
.msl-logo-mark {
  display: inline-block;
}

/* ==========================================
   Page Hero (sub-pages)
   ========================================== */
.msl-page-hero {
  background-color: var(--msl-bg-secondary);
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--msl-border);
  position: relative;
  overflow: hidden;
}

.msl-page-hero__motif {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 40%;
  opacity: 0.06;
  pointer-events: none;
}

.msl-page-hero__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  position: relative;
  z-index: 1;
}

.msl-page-hero__label {
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--msl-accent);
  margin-bottom: 0.75rem;
}

.msl-page-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--msl-text-primary);
  max-width: 700px;
  margin-bottom: 1rem;
}

.msl-page-hero__desc {
  font-size: 1.05rem;
  color: var(--msl-text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* ==========================================
   Breadcrumb
   ========================================== */
.msl-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  color: var(--msl-text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.msl-breadcrumb a {
  color: var(--msl-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.msl-breadcrumb a:hover {
  color: var(--msl-accent);
}

.msl-breadcrumb__sep {
  color: var(--msl-border);
}

.msl-breadcrumb__current {
  color: var(--msl-text-secondary);
}

/* ==========================================
   Blog Index
   ========================================== */
.msl-insights {
  padding: 3rem 0 5rem;
}

.msl-tag-filter {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.msl-tag-filter__btn {
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.375rem 0.875rem;
  border-radius: var(--msl-radius-sm);
  border: 1px solid var(--msl-border);
  background: transparent;
  color: var(--msl-text-muted);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.msl-tag-filter__btn:hover,
.msl-tag-filter__btn--active {
  background-color: var(--msl-accent);
  color: #0F1923;
  border-color: var(--msl-accent);
}

.msl-articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

@media (max-width: 1024px) {
  .msl-articles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .msl-articles-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   Article Card
   ========================================== */
.msl-article-card {
  background-color: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
}

.msl-article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--msl-shadow);
  border-color: var(--msl-accent);
}

.msl-article-card__thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background-color: var(--msl-bg-secondary);
}

.msl-article-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.msl-article-card:hover .msl-article-card__thumb img {
  transform: scale(1.03);
}

.msl-article-card__body {
  padding: 1.25rem 1.375rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.msl-article-card__tag {
  display: inline-block;
  font-family: var(--msl-font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background-color: rgba(245, 158, 11, 0.12);
  color: var(--msl-accent);
  border: 1px solid rgba(245, 158, 11, 0.25);
  margin-bottom: 0.75rem;
  align-self: flex-start;
}

.msl-article-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  line-height: 1.45;
  margin-bottom: 0.625rem;
  flex: 1;
}

.msl-article-card__title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.msl-article-card__title a:hover {
  color: var(--msl-accent);
}

.msl-article-card__excerpt {
  font-size: 0.875rem;
  color: var(--msl-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.msl-article-card__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: auto;
}

.msl-article-card__date {
  font-family: var(--msl-font-mono);
  font-size: 0.72rem;
  color: var(--msl-text-muted);
}

.msl-article-card__read {
  font-family: var(--msl-font-mono);
  font-size: 0.72rem;
  color: var(--msl-text-muted);
}

/* ==========================================
   Article Detail
   ========================================== */
.msl-article-hero {
  background-color: var(--msl-bg-secondary);
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--msl-border);
}

.msl-article-hero__inner {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-article-hero__tag {
  display: inline-block;
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border-radius: 3px;
  background-color: rgba(245, 158, 11, 0.12);
  color: var(--msl-accent);
  border: 1px solid rgba(245, 158, 11, 0.25);
  margin-bottom: 1rem;
}

.msl-article-hero__title {
  font-size: clamp(1.5rem, 3.5vw, 2.375rem);
  font-weight: 700;
  color: var(--msl-text-primary);
  line-height: 1.25;
  margin-bottom: 1.25rem;
}

.msl-article-hero__meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.msl-article-hero__meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  color: var(--msl-text-muted);
}

.msl-article-hero__meta-item i {
  color: var(--msl-text-muted);
  font-size: 0.7rem;
}

.msl-article-cover {
  background-color: var(--msl-bg-secondary);
  padding: 0 0 2.5rem;
}

.msl-article-cover__inner {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-article-cover__img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--msl-radius);
  background-color: var(--msl-bg-surface);
}

/* Article body — light reading bg */
.msl-article-wrapper {
  background-color: var(--msl-bg-primary);
  padding: 3rem 0 4rem;
}

.msl-article-wrapper__inner {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-article__body {
  background-color: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 2.5rem 3rem;
  min-height: 200px;
  color: var(--msl-text-secondary);
  line-height: 1.8;
}

@media (max-width: 640px) {
  .msl-article__body {
    padding: 1.5rem 1.25rem;
  }
}

/* Author card */
.msl-author-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background-color: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  margin-top: 2rem;
}

.msl-author-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--msl-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--msl-font-mono);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--msl-accent);
  flex-shrink: 0;
  border: 1px solid var(--msl-border);
}

.msl-author-card__name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--msl-text-primary);
}

.msl-author-card__role {
  font-size: 0.8rem;
  color: var(--msl-text-muted);
  margin-top: 0.15rem;
  font-family: var(--msl-font-mono);
}

/* Related articles */
.msl-related {
  padding: 3rem 0;
  border-top: 1px solid var(--msl-border);
  background-color: var(--msl-bg-secondary);
}

.msl-related__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-related__heading {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  margin-bottom: 1.5rem;
}

/* ==========================================
   Footer
   ========================================== */
.msl-footer {
  background-color: var(--msl-bg-secondary);
  border-top: 1px solid var(--msl-border);
  padding: 3.5rem 0 0;
}

.msl-footer__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

@media (max-width: 900px) {
  .msl-footer__top {
    grid-template-columns: repeat(2, 1fr);
  }
  .msl-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .msl-footer__top { grid-template-columns: 1fr; }
}

.msl-footer__brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.875rem;
  text-decoration: none;
}

.msl-footer__brand-wordmark {
  font-family: var(--msl-font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--msl-text-primary);
}

.msl-footer__tagline {
  font-size: 0.85rem;
  color: var(--msl-text-muted);
  line-height: 1.6;
  max-width: 220px;
  margin-bottom: 1rem;
}

.msl-footer__col-heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--msl-text-muted);
  margin-bottom: 1rem;
  font-family: var(--msl-font-mono);
}

.msl-footer__col-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.msl-footer__col-link {
  font-size: 0.875rem;
  color: var(--msl-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.msl-footer__col-link:hover {
  color: var(--msl-accent);
}

.msl-footer__bottom {
  border-top: 1px solid var(--msl-border);
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.msl-footer__copy {
  font-size: 0.8rem;
  color: var(--msl-text-muted);
  font-family: var(--msl-font-mono);
}

.msl-footer__copy a {
  color: var(--msl-text-muted);
  text-decoration: none;
}

.msl-footer__copy a:hover {
  color: var(--msl-accent);
}

/* ==========================================
   Cookie Banner
   ========================================== */
.msl-cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background-color: var(--msl-bg-surface);
  border-top: 1px solid var(--msl-border);
  padding: 1rem clamp(1rem, 4vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
}

.msl-cookie-banner[hidden] {
  display: none;
}

.msl-cookie-banner__text {
  font-size: 0.85rem;
  color: var(--msl-text-secondary);
  flex: 1;
  min-width: 200px;
}

.msl-cookie-banner__text a {
  color: var(--msl-accent);
}

.msl-cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.msl-cookie-banner__btn {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: var(--msl-radius-sm);
  border: 1px solid var(--msl-border);
  cursor: pointer;
  font-family: var(--msl-font-body);
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.msl-cookie-banner__btn--accept {
  background-color: var(--msl-accent);
  color: #0F1923;
  border-color: var(--msl-accent);
}

.msl-cookie-banner__btn--accept:hover {
  background-color: var(--msl-accent-dark);
  border-color: var(--msl-accent-dark);
}

.msl-cookie-banner__btn--essential {
  background-color: transparent;
  color: var(--msl-text-secondary);
}

.msl-cookie-banner__btn--essential:hover {
  background-color: var(--msl-bg-secondary);
  color: var(--msl-text-primary);
}

/* ==========================================
   Legal pages
   ========================================== */
.msl-legal-hero {
  background-color: var(--msl-bg-secondary);
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--msl-border);
}

.msl-legal-hero__inner {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-legal-hero__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--msl-text-primary);
  margin-bottom: 0.5rem;
}

.msl-legal-hero__updated {
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  color: var(--msl-text-muted);
}

.msl-legal-wrapper {
  padding: 3rem 0 5rem;
}

.msl-legal-wrapper__inner {
  max-width: var(--msl-container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.msl-legal-body h2 {
  font-size: 1.25rem;
  color: var(--msl-text-primary);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--msl-border);
}

.msl-legal-body h3 {
  font-size: 1rem;
  color: var(--msl-text-secondary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.msl-legal-body p {
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--msl-text-secondary);
  line-height: 1.8;
}

.msl-legal-body ul,
.msl-legal-body ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  list-style: disc;
}

.msl-legal-body ol {
  list-style: decimal;
}

.msl-legal-body li {
  font-size: 0.95rem;
  color: var(--msl-text-secondary);
  line-height: 1.75;
  margin-bottom: 0.375rem;
}

.msl-legal-body a {
  color: var(--msl-accent);
}

.msl-legal-body strong {
  color: var(--msl-text-primary);
  font-weight: 600;
}

/* ==========================================
   Buttons
   ========================================== */
.msl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--msl-font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--msl-radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
}

.msl-btn--primary {
  background-color: var(--msl-accent);
  color: #0F1923;
}

.msl-btn--primary:hover {
  background-color: var(--msl-accent-dark);
  color: #0F1923;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

.msl-btn--ghost {
  background-color: transparent;
  color: var(--msl-text-secondary);
  border: 1px solid var(--msl-border);
}

.msl-btn--ghost:hover {
  background-color: var(--msl-bg-surface);
  color: var(--msl-text-primary);
  border-color: var(--msl-text-muted);
}

/* ==========================================
   Misc
   ========================================== */
.msl-section {
  padding: 4rem 0;
}

.msl-divider {
  border: none;
  border-top: 1px solid var(--msl-border);
  margin: 2rem 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip link */
.msl-skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--msl-accent);
  color: #0F1923;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 10000;
  transition: top 0.2s;
}

.msl-skip-link:focus {
  top: 0;
}

/* ==========================================
   Fade-in animation (IntersectionObserver)
   ========================================== */
.msl-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.msl-fade-in--visible {
  opacity: 1;
  transform: none;
}

/* ==========================================
   Hero — index.html
   ========================================== */
.msl-hero {
  background-color: var(--msl-bg-primary);
  padding: 5.5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.msl-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,158,11,0.4), transparent);
}

.msl-hero__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.msl-hero__content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.msl-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--msl-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--msl-accent);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.28);
  padding: 0.3rem 0.8rem;
  border-radius: var(--msl-radius-sm);
  width: fit-content;
}

.msl-hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--msl-accent);
  animation: msl-pulse 1.8s ease-in-out infinite;
}

@keyframes msl-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.msl-hero__headline {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--msl-text-primary);
}

.msl-hero__subhead {
  font-size: 1.05rem;
  color: var(--msl-text-secondary);
  line-height: 1.7;
  max-width: 52ch;
}

.msl-hero__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.msl-hero__note {
  font-family: var(--msl-font-mono);
  font-size: 0.75rem;
  color: var(--msl-text-muted);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.msl-hero__note i {
  color: var(--msl-success);
  font-size: 0.7rem;
}

.msl-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.msl-hero__waveform-wrap {
  width: 100%;
  max-width: 560px;
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.msl-hero__waveform-wrap::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--msl-accent), transparent);
  opacity: 0.6;
}

.msl-hero__waveform-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.msl-hero__waveform-title {
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  color: var(--msl-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.msl-hero__waveform-alert {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: var(--msl-accent);
  font-family: var(--msl-font-mono);
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 3px;
}

.msl-hero__waveform-alert::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--msl-accent);
  animation: msl-pulse 1.8s ease-in-out infinite;
}

/* Hero stats strip below waveform */
.msl-hero__waveform-stats {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--msl-border);
  margin-top: 1rem;
}

.msl-hero__waveform-stat {
  flex: 1;
  padding: 0.625rem 0.75rem;
  border-right: 1px solid var(--msl-border);
}

.msl-hero__waveform-stat:last-child {
  border-right: none;
}

.msl-hero__waveform-stat-val {
  font-family: var(--msl-font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--msl-data-blue);
  line-height: 1.2;
}

.msl-hero__waveform-stat-lbl {
  font-family: var(--msl-font-mono);
  font-size: 0.65rem;
  color: var(--msl-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

@media (max-width: 1024px) {
  .msl-hero__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .msl-hero__visual {
    order: -1;
  }
  .msl-hero__waveform-wrap {
    max-width: 100%;
  }
  .msl-hero__subhead {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .msl-hero {
    padding: 4rem 0 3.5rem;
  }
  .msl-hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .msl-hero__waveform-stats {
    flex-wrap: wrap;
  }
  .msl-hero__waveform-stat {
    min-width: 50%;
  }
}

/* ==========================================
   Integration Strip
   ========================================== */
.msl-int-strip {
  background-color: var(--msl-bg-secondary);
  padding: 2rem 0;
  border-top: 1px solid var(--msl-border);
  border-bottom: 1px solid var(--msl-border);
}

.msl-int-strip__label {
  text-align: center;
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--msl-text-muted);
  margin-bottom: 1.25rem;
}

.msl-int-strip__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.625rem 1.25rem;
}

.msl-int-badge {
  font-family: var(--msl-font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--msl-text-muted);
  padding: 0.4rem 0.875rem;
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  background: var(--msl-bg-surface);
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}

.msl-int-badge:hover {
  color: var(--msl-text-secondary);
  border-color: rgba(245, 158, 11, 0.35);
}

/* ==========================================
   Metrics Bar (4-stat)
   ========================================== */
.msl-metrics {
  padding: 3.5rem 0;
  background-color: var(--msl-bg-primary);
}

.msl-metrics__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--msl-border);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  overflow: hidden;
}

.msl-metric {
  background: var(--msl-bg-secondary);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.msl-metric__value {
  font-family: var(--msl-font-mono);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--msl-accent);
  line-height: 1.1;
}

.msl-metric__label {
  font-size: 0.85rem;
  color: var(--msl-text-secondary);
  line-height: 1.45;
}

@media (max-width: 900px) {
  .msl-metrics__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-metrics__grid { grid-template-columns: 1fr; }
}

/* ==========================================
   How It Works — 4-step horizontal
   ========================================== */
.msl-hiw {
  padding: 4rem 0;
  background-color: var(--msl-bg-secondary);
}

.msl-hiw__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
  margin-top: 2.5rem;
}

.msl-hiw__steps::before {
  content: '';
  position: absolute;
  top: 27px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, var(--msl-border), var(--msl-accent), var(--msl-border));
  opacity: 0.45;
  pointer-events: none;
}

.msl-hiw__step {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

.msl-hiw__step-num {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  font-family: var(--msl-font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--msl-accent);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.msl-hiw__step-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--msl-text-primary);
}

.msl-hiw__step-body {
  font-size: 0.875rem;
  color: var(--msl-text-secondary);
  line-height: 1.65;
}

@media (max-width: 900px) {
  .msl-hiw__steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .msl-hiw__steps::before { display: none; }
}

@media (max-width: 480px) {
  .msl-hiw__steps { grid-template-columns: 1fr; }
}

/* ==========================================
   Capability Cards — 6-card grid
   ========================================== */
.msl-capabilities {
  padding: 4rem 0;
  background-color: var(--msl-bg-primary);
}

.msl-cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.msl-cap-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: border-color 0.22s, box-shadow 0.22s;
}

.msl-cap-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.07);
}

.msl-cap-card__icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245, 158, 11, 0.1);
  border-radius: var(--msl-radius-sm);
  color: var(--msl-accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.msl-cap-card__title {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  line-height: 1.35;
}

.msl-cap-card__body {
  font-size: 0.85rem;
  color: var(--msl-text-secondary);
  line-height: 1.65;
}

.msl-cap-card__tag {
  display: inline-block;
  font-family: var(--msl-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  color: var(--msl-text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--msl-border);
  padding: 2px 7px;
  border-radius: 3px;
  width: fit-content;
  margin-top: auto;
}

@media (max-width: 900px) {
  .msl-cap-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-cap-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   Equipment Types — 3-col
   ========================================== */
.msl-equipment {
  padding: 4rem 0;
  background-color: var(--msl-bg-secondary);
}

.msl-equip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.msl-equip-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  overflow: hidden;
  transition: border-color 0.22s;
}

.msl-equip-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
}

.msl-equip-card__img-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--msl-bg-primary);
}

.msl-equip-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.msl-equip-card:hover .msl-equip-card__img {
  transform: scale(1.04);
}

.msl-equip-card__body {
  padding: 1.375rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msl-equip-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--msl-text-primary);
}

.msl-equip-card__failures {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.msl-equip-card__failure {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.83rem;
  color: var(--msl-text-secondary);
}

.msl-equip-card__failure::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--msl-accent);
  flex-shrink: 0;
}

.msl-equip-card__metric {
  font-family: var(--msl-font-mono);
  font-size: 0.78rem;
  color: var(--msl-data-green);
  padding-top: 0.75rem;
  border-top: 1px solid var(--msl-border);
}

@media (max-width: 900px) {
  .msl-equip-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-equip-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   Results / Case Cards
   ========================================== */
.msl-results {
  padding: 4rem 0;
  background-color: var(--msl-bg-primary);
}

.msl-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.msl-result-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-top: 3px solid var(--msl-accent);
  border-radius: var(--msl-radius);
  padding: 1.625rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msl-result-card__value {
  font-family: var(--msl-font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--msl-accent);
  line-height: 1.1;
}

.msl-result-card__operator {
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--msl-text-muted);
}

.msl-result-card__desc {
  font-size: 0.88rem;
  color: var(--msl-text-secondary);
  line-height: 1.65;
}

@media (max-width: 900px) {
  .msl-results-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-results-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   CTA Band
   ========================================== */
.msl-cta-band {
  padding: 4.5rem 0;
  background-color: var(--msl-bg-surface);
  border-top: 1px solid var(--msl-border);
  border-bottom: 1px solid var(--msl-border);
}

.msl-cta-band--accent {
  background-color: var(--msl-bg-secondary);
  border-top-color: rgba(245, 158, 11, 0.25);
}

.msl-cta-band__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.msl-cta-band__headline {
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  font-weight: 700;
  color: var(--msl-text-primary);
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.msl-cta-band__sub {
  font-size: 0.95rem;
  color: var(--msl-text-secondary);
  max-width: 52ch;
  line-height: 1.7;
}

.msl-cta-band__meta {
  font-family: var(--msl-font-mono);
  font-size: 0.78rem;
  color: var(--msl-text-muted);
  letter-spacing: 0.04em;
}

@media (max-width: 640px) {
  .msl-cta-band__inner {
    align-items: flex-start;
    text-align: left;
  }
}

/* ==========================================
   Platform — architecture layers SVG
   ========================================== */
.msl-arch {
  padding: 4rem 0;
  background-color: var(--msl-bg-secondary);
}

.msl-arch__diagram {
  background: var(--msl-bg-primary);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 2rem;
  margin-top: 2.5rem;
  overflow: hidden;
}

/* Two-column text + visual */
.msl-twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.msl-twocol--reverse .msl-twocol__content {
  order: 2;
}

.msl-twocol__content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.msl-twocol__content h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
}

.msl-twocol__content p {
  max-width: none;
}

.msl-twocol__visual {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  overflow: hidden;
}

@media (max-width: 900px) {
  .msl-twocol {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .msl-twocol--reverse .msl-twocol__content {
    order: 0;
  }
}

/* Feature list items */
.msl-feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.msl-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.msl-feature-item__icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245, 158, 11, 0.1);
  border-radius: var(--msl-radius-sm);
  color: var(--msl-accent);
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.msl-feature-item__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  margin-bottom: 3px;
}

.msl-feature-item__desc {
  font-size: 0.82rem;
  color: var(--msl-text-secondary);
  line-height: 1.55;
}

/* Security cards 2-col */
.msl-security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.msl-security-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msl-security-card__icon {
  color: var(--msl-accent);
  font-size: 1.25rem;
}

.msl-security-card__title {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--msl-text-primary);
}

.msl-security-card__body {
  font-size: 0.85rem;
  color: var(--msl-text-secondary);
  line-height: 1.65;
}

@media (max-width: 640px) {
  .msl-security-grid { grid-template-columns: 1fr; }
}

/* Deployment timeline */
.msl-timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 1.5rem;
  margin-top: 2.5rem;
}

.msl-timeline::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 0;
  bottom: 2rem;
  width: 1px;
  background: var(--msl-border);
}

.msl-timeline__item {
  display: flex;
  gap: 1.25rem;
  padding-bottom: 2rem;
  position: relative;
}

.msl-timeline__dot {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--msl-bg-secondary);
  border: 2px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  font-family: var(--msl-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--msl-accent);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  margin-left: -19px;
}

.msl-timeline__dot--active {
  border-color: var(--msl-accent);
  background: rgba(245, 158, 11, 0.12);
}

.msl-timeline__content {
  padding-top: 0.25rem;
  flex: 1;
}

.msl-timeline__week {
  font-family: var(--msl-font-mono);
  font-size: 0.68rem;
  color: var(--msl-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.msl-timeline__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  margin-bottom: 4px;
}

.msl-timeline__desc {
  font-size: 0.82rem;
  color: var(--msl-text-secondary);
  line-height: 1.55;
}

/* Alert severity levels */
.msl-alert-levels {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-top: 1.25rem;
}

.msl-alert-level {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.875rem 1.25rem;
  border-radius: var(--msl-radius-sm);
  border-left: 3px solid;
  background: rgba(255,255,255,0.025);
}

.msl-alert-level--advisory { border-left-color: var(--msl-data-blue); }
.msl-alert-level--warning  { border-left-color: var(--msl-warning); }
.msl-alert-level--critical { border-left-color: #EF4444; }

.msl-alert-level__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msl-alert-level--advisory .msl-alert-level__dot { background: var(--msl-data-blue); }
.msl-alert-level--warning  .msl-alert-level__dot { background: var(--msl-warning); }
.msl-alert-level--critical .msl-alert-level__dot { background: #EF4444; }

.msl-alert-level__name {
  font-family: var(--msl-font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  min-width: 84px;
}

.msl-alert-level__desc {
  font-size: 0.83rem;
  color: var(--msl-text-secondary);
}

/* ==========================================
   Integrations page
   ========================================== */
.msl-int-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.msl-int-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: border-color 0.22s;
}

.msl-int-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
}

.msl-int-card__header {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.msl-int-card__icon {
  width: 42px;
  height: 42px;
  background: var(--msl-bg-primary);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--msl-data-blue);
  flex-shrink: 0;
}

.msl-int-card__name {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  line-height: 1.35;
}

.msl-int-card__vendor {
  font-size: 0.78rem;
  color: var(--msl-text-muted);
  margin-top: 2px;
}

.msl-int-card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.msl-int-card__row {
  display: flex;
  gap: 0.5rem;
  font-size: 0.8rem;
  line-height: 1.5;
}

.msl-int-card__row-label {
  color: var(--msl-text-muted);
  min-width: 110px;
  flex-shrink: 0;
}

.msl-int-card__row-val {
  color: var(--msl-text-secondary);
  font-family: var(--msl-font-mono);
  font-size: 0.76rem;
}

.msl-int-card__setup {
  padding-top: 0.875rem;
  border-top: 1px solid var(--msl-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.msl-int-card__setup-label {
  font-size: 0.78rem;
  color: var(--msl-text-muted);
}

.msl-int-card__setup-val {
  font-family: var(--msl-font-mono);
  font-size: 0.8rem;
  color: var(--msl-data-green);
  font-weight: 600;
}

@media (max-width: 900px) {
  .msl-int-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-int-grid { grid-template-columns: 1fr; }
}

/* Accordion */
.msl-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 2.5rem;
}

.msl-accordion__item {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  overflow: hidden;
}

.msl-accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: 0.875rem;
  color: var(--msl-text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--msl-font-body);
  transition: color 0.2s;
}

.msl-accordion__trigger:hover {
  color: var(--msl-accent);
}

.msl-accordion__icon {
  color: var(--msl-text-muted);
  font-size: 0.72rem;
  transition: transform 0.22s;
  flex-shrink: 0;
}

.msl-accordion__item.is-open .msl-accordion__icon {
  transform: rotate(180deg);
  color: var(--msl-accent);
}

.msl-accordion__body {
  display: none;
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--msl-border);
}

.msl-accordion__item.is-open .msl-accordion__body {
  display: block;
}

.msl-accordion__body pre {
  background: var(--msl-bg-primary);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  color: var(--msl-data-blue);
  font-size: 0.82rem;
  margin-top: 0.875rem;
  line-height: 1.6;
}

.msl-accordion__body p {
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

/* ==========================================
   Use Cases page sections
   ========================================== */
.msl-usecase-section {
  padding: 4rem 0;
}

.msl-usecase-section + .msl-usecase-section {
  border-top: 1px solid var(--msl-border);
}

.msl-usecase-section:nth-child(odd) {
  background-color: var(--msl-bg-primary);
}

.msl-usecase-section:nth-child(even) {
  background-color: var(--msl-bg-secondary);
}

.msl-usecase-section__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.msl-usecase-section__inner--rev {
  direction: rtl;
}

.msl-usecase-section__inner--rev > * {
  direction: ltr;
}

.msl-usecase-section__content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.msl-usecase-section__title {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--msl-text-primary);
}

.msl-usecase-section__desc {
  font-size: 0.95rem;
  color: var(--msl-text-secondary);
  line-height: 1.75;
  max-width: none;
}

.msl-usecase-section__img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  border-radius: var(--msl-radius);
  border: 1px solid var(--msl-border);
}

.msl-usecase-section__tags-label,
.msl-usecase-section__list-label {
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  color: var(--msl-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.msl-usecase-section__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.msl-usecase-section__tag {
  font-family: var(--msl-font-mono);
  font-size: 0.73rem;
  color: var(--msl-text-secondary);
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  padding: 3px 9px;
  border-radius: var(--msl-radius-sm);
}

.msl-usecase-section__failures {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.msl-usecase-section__failure {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--msl-text-secondary);
}

.msl-usecase-section__failure::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--msl-accent);
  flex-shrink: 0;
}

.msl-usecase-section__note {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(245, 158, 11, 0.07);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--msl-radius-sm);
  padding: 0.875rem 1.125rem;
}

.msl-usecase-section__note i {
  color: var(--msl-accent);
  font-size: 0.85rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.msl-usecase-section__note p {
  font-size: 0.82rem;
  color: var(--msl-text-secondary);
  line-height: 1.55;
  max-width: none;
}

@media (max-width: 900px) {
  .msl-usecase-section__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .msl-usecase-section__inner--rev {
    direction: ltr;
  }
}

/* ==========================================
   About page sections
   ========================================== */
.msl-founder-story {
  padding: 4rem 0;
  background-color: var(--msl-bg-primary);
}

.msl-founder-story__inner {
  max-width: var(--msl-container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.msl-founder-story__content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.msl-founder-story__content p {
  max-width: none;
}

.msl-founder-story__pull {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  line-height: 1.55;
  border-left: 3px solid var(--msl-accent);
  padding-left: 1.25rem;
  max-width: none;
}

.msl-founder-story__sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.msl-founder-story__event {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.375rem;
}

.msl-founder-story__event-date {
  font-family: var(--msl-font-mono);
  font-size: 0.7rem;
  color: var(--msl-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.msl-founder-story__event-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  margin-bottom: 0.375rem;
}

.msl-founder-story__event-body {
  font-size: 0.82rem;
  color: var(--msl-text-secondary);
  line-height: 1.55;
}

@media (max-width: 900px) {
  .msl-founder-story__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* About stats */
.msl-about-stats {
  padding: 3rem 0;
  background-color: var(--msl-bg-secondary);
}

.msl-about-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--msl-border);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  overflow: hidden;
}

.msl-about-stat {
  background: var(--msl-bg-surface);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.msl-about-stat__value {
  font-family: var(--msl-font-mono);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--msl-accent);
  line-height: 1.1;
}

.msl-about-stat__label {
  font-size: 0.82rem;
  color: var(--msl-text-secondary);
}

@media (max-width: 640px) {
  .msl-about-stats__grid { grid-template-columns: repeat(2, 1fr); }
}

/* Principles */
.msl-principles {
  padding: 4rem 0;
  background-color: var(--msl-bg-primary);
}

.msl-principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.msl-principle-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msl-principle-card__num {
  font-family: var(--msl-font-mono);
  font-size: 0.78rem;
  color: var(--msl-accent);
  letter-spacing: 0.06em;
}

.msl-principle-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  line-height: 1.35;
}

.msl-principle-card__body {
  font-size: 0.875rem;
  color: var(--msl-text-secondary);
  line-height: 1.65;
}

@media (max-width: 640px) {
  .msl-principles-grid { grid-template-columns: 1fr; }
}

/* Team cards */
.msl-team-section {
  padding: 4rem 0;
  background-color: var(--msl-bg-secondary);
}

.msl-team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.msl-team-card {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  overflow: hidden;
  text-align: center;
}

.msl-team-card__avatar-wrap {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--msl-bg-primary);
}

.msl-team-card__portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.msl-team-card__letter {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--msl-font-heading);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--msl-accent);
  background: var(--msl-bg-primary);
}

.msl-team-card__info {
  padding: 1rem 1.25rem 1.375rem;
}

.msl-team-card__name {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--msl-text-primary);
  margin-bottom: 4px;
}

.msl-team-card__role {
  font-size: 0.78rem;
  color: var(--msl-text-muted);
  font-family: var(--msl-font-mono);
}

@media (max-width: 900px) {
  .msl-team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .msl-team-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   Section Header helper
   ========================================== */
.msl-section-head {
  margin-bottom: 2.5rem;
}

.msl-section-head--center {
  text-align: center;
}

.msl-section-head--center p {
  margin-inline: auto;
}

.msl-section-head__label {
  display: block;
  font-family: var(--msl-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--msl-accent);
  margin-bottom: 0.625rem;
}

.msl-section-head__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--msl-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.msl-section-head__sub {
  font-size: 1rem;
  color: var(--msl-text-secondary);
  max-width: 60ch;
  line-height: 1.7;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--msl-accent);
  outline-offset: 3px;
}

/* Print */
@media print {
  .msl-nav,
  .msl-cookie-banner,
  .msl-cta-band { display: none; }
}

/* Supplemental — orphan class coverage */
.msl-arch__img {
  width: 100%;
  border-radius: var(--msl-radius);
  display: block;
  object-fit: cover;
}
.msl-article-cta {
  margin-top: 32px;
  padding: 20px 24px;
  background: rgba(var(--msl-accent), 0.07);
  border: 1px solid var(--msl-border);
  border-left: 4px solid var(--msl-accent);
  border-radius: 0 var(--msl-radius) var(--msl-radius) 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--msl-text-primary);
}
.msl-article-cta a {
  color: var(--msl-accent);
  font-weight: 600;
  transition: color 0.15s;
}
.msl-article-cta a:hover { color: var(--msl-accent-dark); }
.msl-contact-form-col {
  display: flex;
  flex-direction: column;
}
.msl-contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) {
  .msl-contact-layout { grid-template-columns: 1fr; gap: 32px; }
}
.msl-contact-map {
  margin-top: 20px;
  border-radius: var(--msl-radius);
  overflow: hidden;
  border: 1px solid var(--msl-border);
}
.msl-contact-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.msl-footer__col {
  display: flex;
  flex-direction: column;
}
.msl-form__input,
.msl-form__select,
.msl-form__textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--msl-bg-primary);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius-sm);
  font-size: 0.9375rem;
  color: var(--msl-text-primary);
  font-family: var(--msl-font-body);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.msl-form__input:focus,
.msl-form__select:focus,
.msl-form__textarea:focus {
  outline: none;
  border-color: var(--msl-accent);
  box-shadow: 0 0 0 3px rgba(var(--msl-accent), 0.12);
}
.msl-form__textarea { resize: vertical; min-height: 120px; }
.msl-form__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--msl-text-primary);
  margin-bottom: 6px;
  display: block;
}
.msl-team-member {
  background: var(--msl-bg-surface);
  border: 1px solid var(--msl-border);
  border-radius: var(--msl-radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: box-shadow 0.15s;
}
.msl-team-member:hover { box-shadow: var(--msl-shadow); }