/* Site Design Tokens & Reset */
:root {
  --font-display: 'Readex Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Barlow', -apple-system, BlinkMacSystemFont, sans-serif;
  --color-primary: #1c3f5e;
  --color-secondary: #66869e;
  --color-accent: #b8813c;
  --color-surface: #f5f6f8;
  --color-surface-alt: #eaecee;
  --color-ink: #0f2233;
  --color-white: #ffffff;
  --color-border: #d4d9de;
  --color-border-subtle: #e2e6ea;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  letter-spacing: -0.01em;
}

/* Base Layout System */
.bm-viewport-wrapper {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1rem;
}

.bm-main-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2.5rem;
  align-items: start;
  padding: 2rem 0;
}

.bm-primary-column {
  grid-column: 1 / 2;
  min-width: 0;
  padding-right: 1rem;
}

.bm-side-rail {
  grid-column: 2 / 3;
  position: sticky;
  top: 2rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
}

/* Header & Brand Mark - Top of Content Column */
.bm-brand-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-primary);
}

.bm-brand-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.bm-brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.2rem;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  line-height: 1.1;
  display: block;
}

.bm-brand-subtitle {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.35rem;
  display: block;
}

/* Side Rail Styling */
.bm-rail-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.bm-rail-heading {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: 0.35rem;
}

.bm-rail-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bm-rail-item {
  margin-bottom: 0.5rem;
}

.bm-rail-link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-ink);
  text-decoration: none;
  background: var(--color-surface);
  border-left: 3px solid transparent;
}

.bm-rail-link:hover,
.bm-rail-link-active {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  border-left-color: var(--color-accent);
}

.bm-rail-meta {
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle);
}

.bm-rail-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.2rem 0.5rem;
  margin-bottom: 0.5rem;
}

.bm-rail-note {
  font-size: 0.85rem;
  color: var(--color-secondary);
  line-height: 1.4;
}

/* Sections-First Opening Bands */
.bm-section-opening {
  margin-bottom: 2.5rem;
}

.bm-opening-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

.bm-pitch-bands {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
}

.bm-pitch-band {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1.25rem 1.5rem;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-subtle);
}

.bm-pitch-band:last-child {
  border-bottom: none;
}

.bm-pitch-band-alt {
  background: var(--color-surface-alt);
}

.bm-pitch-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.bm-pitch-desc {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-ink);
  text-align: right;
}

/* Article & Content List/Prose Containers */
.bm-home-prose,
.bm-article-body {
  margin-bottom: 3rem;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-ink);
}

/* EXPLICIT LIST RULES FOR BOTH PROSE CONTAINERS */
.bm-home-prose ul,
.bm-home-prose ol,
.bm-article-body ul,
.bm-article-body ol {
  margin-top: 1rem;
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  list-style-position: outside;
}

.bm-home-prose ul,
.bm-article-body ul {
  list-style-type: disc;
}

.bm-home-prose ol,
.bm-article-body ol {
  list-style-type: decimal;
}

.bm-home-prose li,
.bm-article-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

.bm-home-prose p,
.bm-article-body p {
  margin-bottom: 1.25rem;
}

.bm-home-prose h2,
.bm-article-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-border-subtle);
  padding-bottom: 0.35rem;
}

.bm-home-prose h3,
.bm-article-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.bm-home-prose blockquote,
.bm-article-body blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface-alt);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
}

/* Article Presentation System (Lead-Plus-Rest) */
.bm-article-system {
  margin-top: 2.5rem;
}

.bm-system-heading {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 0.4rem;
}

.bm-lead-block {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-primary);
  padding: 2rem;
  margin-bottom: 2rem;
}

.bm-lead-meta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.bm-lead-title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.bm-lead-title a {
  color: var(--color-primary);
  text-decoration: none;
}

.bm-lead-title a:hover {
  color: var(--color-accent);
}

.bm-lead-description {
  font-size: 1.1rem;
  color: var(--color-ink);
  line-height: 1.6;
}

.bm-rest-block {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.5rem 2rem;
}

.bm-rest-heading {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.bm-rest-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bm-rest-item {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.bm-rest-item:last-child {
  border-bottom: none;
}

.bm-rest-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-ink);
  text-decoration: none;
}

.bm-rest-link:hover {
  color: var(--color-accent);
}

/* List & Single Page Header & Meta */
.bm-list-header,
.bm-single-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.bm-list-title,
.bm-single-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.2rem;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.bm-single-meta {
  font-size: 0.9rem;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.bm-meta-sep {
  margin: 0 0.4rem;
}

.bm-single-lead,
.bm-list-description {
  font-size: 1.15rem;
  color: var(--color-ink);
  line-height: 1.6;
  font-weight: 500;
}

.bm-single-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.bm-back-link {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.bm-back-link:hover {
  color: var(--color-accent);
}

/* Footer Styling */
.bm-site-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 2px solid var(--color-primary);
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.bm-footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bm-footer-nav {
  display: flex;
  gap: 1.5rem;
}

.bm-footer-nav a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.bm-footer-nav a:hover {
  color: var(--color-accent);
}

/* Responsive & 375px Viewport Support */
@media (max-width: 860px) {
  .bm-main-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .bm-primary-column {
    grid-column: 1 / 2;
    padding-right: 0;
  }

  /* The rail holds the site's only primary navigation. Left after the reading
     column it landed ~90% down a 4000px homepage, so a 375px visitor had no
     nav at all. Order it above the content and lay the links out horizontally. */
  .bm-side-rail {
    grid-column: 1 / 2;
    position: static;
    margin-top: 0;
    order: -1;
    padding: 0.85rem 1rem;
  }

  .bm-rail-container {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1.25rem;
  }

  .bm-rail-menu {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    flex: 1 1 100%;
    gap: 0.25rem 1.25rem;
  }

  .bm-rail-item {
    margin-bottom: 0;
  }

  .bm-rail-link {
    padding: 0.2rem 0;
  }

  /* The rail's badge/marketing block belongs with the content, not the top strip. */
  .bm-rail-meta {
    display: none;
  }

  .bm-pitch-band {
    flex-direction: column;
    gap: 0.35rem;
  }

  .bm-pitch-desc {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .bm-viewport-wrapper {
    padding: 0 0.75rem;
  }

  .bm-brand-title {
    font-size: 1.75rem;
  }

  .bm-lead-block {
    padding: 1.25rem;
  }

  .bm-lead-title {
    font-size: 1.4rem;
  }

  .bm-list-title,
  .bm-single-title {
    font-size: 1.6rem;
  }

  .bm-home-prose ul,
  .bm-home-prose ol,
  .bm-article-body ul,
  .bm-article-body ol {
    padding-left: 1.5rem;
  }
}