/*
 * Politerate shared stylesheet.
 * Every visual knob is a CSS custom property — swap a single value here
 * to re-theme without touching templates.
 */

:root {
  /* ------------------------------------------------------------------
   * Brand palette (logo-anchored)
   * ------------------------------------------------------------------ */
  --brand-dark: #1e1e3f;           /* "Po" in the wordmark */
  --brand-accent: #6f5ee6;         /* "literate" in the wordmark + network icon */
  --brand-accent-soft: #ece9fd;    /* hover tint for brand-colored UI */

  /* ------------------------------------------------------------------
   * Action palette (verdant forest green).
   * Swap these three to re-skin the accent color site-wide.
   * ------------------------------------------------------------------ */
  --action: #2f855a;
  --action-hover: #256a48;
  --action-soft: #e6f4ea;
  --action-ring: rgba(47, 133, 90, 0.18);

  /* ------------------------------------------------------------------
   * Neutrals
   * ------------------------------------------------------------------ */
  --bg: #fafaf7;
  --surface: #ffffff;
  --surface-soft: #f5f5f2;
  --border: #e8e7e2;
  --border-strong: #d6d5cf;

  --text: #1a1a1a;
  --text-muted: #5b6370;
  --text-subtle: #8a8f98;

  /* ------------------------------------------------------------------
   * Feedback
   * ------------------------------------------------------------------ */
  --warning: #b45309;
  --warning-soft: #fef3c7;
  --warning-border: #fde68a;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --success: var(--action);
  --success-soft: var(--action-soft);

  /* ------------------------------------------------------------------
   * Shape / shadow / motion
   * ------------------------------------------------------------------ */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(30, 30, 63, 0.04);
  --shadow: 0 2px 12px rgba(30, 30, 63, 0.06);
  --shadow-lg: 0 8px 32px rgba(30, 30, 63, 0.08);
  --transition: 160ms ease;

  /* Layout */
  --container-max: 1100px;
  --container-narrow: 820px;
  --space-gutter: 1.5rem;
}

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

html, body { height: 100%; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "cv02", "cv03", "cv11"; /* Inter tabular/alt forms */
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--action); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--action-hover); }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

h1, h2, h3, h4 { color: var(--brand-dark); font-weight: 700; letter-spacing: -0.01em; line-height: 1.25; }

/* ==================================================================
 * Header
 * ================================================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
}
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--brand-dark);
}
.brand:hover { color: var(--brand-dark); }

.brand__icon {
  width: 32px;
  height: 32px;
  color: var(--brand-accent);
  flex-shrink: 0;
}

.brand__wordmark {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--brand-dark);
}
.brand__wordmark--accent { color: var(--brand-accent); font-weight: 800; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.site-nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.site-nav a:hover { color: var(--action); background: var(--action-soft); }
.site-nav a.is-active {
  color: var(--action);
  background: var(--action-soft);
}

/* ==================================================================
 * Layout
 * ================================================================== */
main {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2.25rem 1.25rem 3rem;
}
main.is-narrow { max-width: var(--container-narrow); }

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.75rem 1.25rem;
  text-align: center;
  color: var(--text-subtle);
  font-size: 0.85rem;
}
.site-footer a { color: var(--text-muted); margin: 0 0.25rem; }
.site-footer a:hover { color: var(--action); }

/* ==================================================================
 * Hero (homepage)
 * ================================================================== */
.hero {
  text-align: center;
  padding: 2.5rem 1rem 2.25rem;
  margin-bottom: 1.75rem;
}
.hero__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  margin-bottom: 0.9rem;
}
.hero__logo .brand__icon { width: 48px; height: 48px; }
.hero__logo .brand__wordmark { font-size: 2.6rem; letter-spacing: -0.03em; }
.hero__tagline {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--text-subtle);
  margin-bottom: 1rem;
  font-weight: 600;
}
.hero__tagline span { margin: 0 0.45rem; color: var(--action); }
.hero__lede {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 36rem;
  margin: 0 auto;
}

/* ==================================================================
 * View toggle (daily / topics)
 * ================================================================== */
.view-toggle {
  display: inline-flex;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem;
  margin: 0 auto 2rem;
}
.view-toggle__container { text-align: center; }
.view-toggle button {
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.view-toggle button:hover { color: var(--action); }
.view-toggle button.is-active {
  background: var(--surface);
  color: var(--action);
  box-shadow: var(--shadow-sm);
}

/* ==================================================================
 * Cards
 * ================================================================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover { box-shadow: var(--shadow); border-color: var(--border-strong); }

.card--feature {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}

/* ------------------------------------------------------------------
 * Daily brief card
 * ------------------------------------------------------------------ */
.brief__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.brief__title { font-size: 1.35rem; }
.brief__meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}
.brief__text {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--text);
  margin: 1rem 0 1.5rem;
}
.brief__sources { padding-top: 1rem; border-top: 1px solid var(--border); }
.brief__sources-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}

/* ------------------------------------------------------------------
 * Cluster / topic cards
 * ------------------------------------------------------------------ */
.clusters-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 820px) {
  .clusters-grid { grid-template-columns: 1fr 1fr; }
}

.cluster__head { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.85rem; }
.cluster__icon {
  width: 36px; height: 36px;
  background: var(--action-soft);
  border-radius: var(--radius-sm);
  display: grid; place-items: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.cluster__title { font-size: 1.05rem; line-height: 1.35; font-weight: 600; color: var(--brand-dark); }
.cluster__title-link { color: inherit; text-decoration: none; transition: color var(--transition); }
.cluster__title-link:hover { color: var(--action-hover); text-decoration: underline; }
.cluster__meta { font-size: 0.8rem; color: var(--text-subtle); margin-top: 0.1rem; }
.cluster__detail-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--action-hover);
  text-decoration: none;
  transition: color var(--transition);
}
.cluster__detail-link:hover { color: var(--action); text-decoration: underline; }

.cluster__summary { font-size: 0.97rem; line-height: 1.7; color: var(--text); margin: 0.25rem 0 1rem; }

/* ==================================================================
 * Badges + pills
 * ================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}
.badge strong { color: var(--brand-dark); font-weight: 700; }
.badge--accent { background: var(--action-soft); border-color: transparent; color: var(--action-hover); }
.badge--accent strong { color: var(--action-hover); }
.badge--success { background: var(--action-soft); color: var(--action-hover); border-color: transparent; }

.source-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.83rem;
  color: var(--text);
  transition: background var(--transition), border-color var(--transition);
}
.source-badge:hover { background: var(--action-soft); border-color: var(--action-ring); color: var(--action-hover); }
.source-badge__score {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
}
.cred-high { background: var(--action-soft); color: var(--action); }
.cred-medium { background: var(--warning-soft); color: var(--warning); }
.cred-low { background: var(--danger-soft); color: var(--danger); }

.sources-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ==================================================================
 * Politerate term highlights
 * ================================================================== */
.politerate-term {
  border-bottom: 2px dotted var(--brand-accent);
  cursor: help;
  position: relative;
  padding: 0 1px;
  transition: background var(--transition);
}
.politerate-term:hover { background: var(--brand-accent-soft); }
.politerate-term::after {
  content: attr(title);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--brand-dark);
  color: #fff;
  padding: 0.55rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  line-height: 1.45;
  max-width: 320px;
  width: max-content;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 50;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
}
.politerate-term:hover::after { opacity: 1; visibility: visible; }

.terms-section { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.terms-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.55rem;
}
.terms-list { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.term-tag {
  background: var(--action-soft);
  color: var(--action-hover);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: help;
}

/* ==================================================================
 * BiasIndicator (3-segment bar) + TrustScore (progress bar)
 * ================================================================== */
.bias-indicator { display: inline-flex; align-items: center; gap: 0.55rem; }
.bias-indicator__bar { display: inline-flex; gap: 3px; }
.bias-indicator__seg {
  width: 14px;
  height: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 2px;
  transition: background var(--transition);
}
.bias-indicator__seg--left.is-active   { background: #1d4ed8; border-color: #1d4ed8; }
.bias-indicator__seg--center.is-active { background: #6b7280; border-color: #6b7280; }
.bias-indicator__seg--right.is-active  { background: #b91c1c; border-color: #b91c1c; }
.bias-indicator__label { font-size: 0.82rem; font-weight: 600; }
.bias-indicator__label--left   { color: #1d4ed8; }
.bias-indicator__label--center { color: #4b5563; }
.bias-indicator__label--right  { color: #b91c1c; }

.trust-score { display: inline-flex; align-items: center; gap: 0.55rem; }
.trust-score__track {
  width: 90px;
  height: 6px;
  background: var(--surface-soft);
  border-radius: 999px;
  overflow: hidden;
}
.trust-score__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  transition: width var(--transition);
}
.trust-score__fill--high   { background: var(--action); }
.trust-score__fill--medium { background: var(--warning); }
.trust-score__fill--low    { background: var(--danger); }
.trust-score__label { font-size: 0.82rem; font-weight: 600; }
.trust-score__label--high   { color: var(--action-hover); }
.trust-score__label--medium { color: var(--warning); }
.trust-score__label--low    { color: var(--danger); }

/* ==================================================================
 * AI disclaimer chip (legacy per-card; now primarily using the
 * sticky banner below)
 * ================================================================== */
.ai-disclaimer {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.74rem;
  color: var(--warning);
  background: var(--warning-soft);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--warning-border);
  margin-bottom: 0.9rem;
  font-weight: 500;
}

/* One-per-page disclaimer banner. Sits inside the sticky .topbar
 * wrapper so it scrolls together with the nav and stays pinned. */
.ai-banner {
  background: var(--warning-soft);
  color: var(--warning);
  border-bottom: 1px solid var(--warning-border);
  padding: 0.5rem 1rem;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 500;
}
.ai-banner__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

/* ==================================================================
 * Buttons
 * ================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--action);
  color: #fff;
}
.btn-primary:hover { background: var(--action-hover); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-soft); color: var(--action); }

/* ==================================================================
 * States: loading, error, empty
 * ================================================================== */
.state {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--text-muted);
}
.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--surface-soft);
  border-top-color: var(--action);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==================================================================
 * Inline annotated text (analyzer + cluster deep-dive).
 * Mirrors Sarah's Figma: flagged phrases become colored spans in the
 * original prose with a hover tooltip; categories are color-coded.
 * ================================================================== */
.annotated-text {
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}
.annot {
  padding: 0.08rem 0.25rem;
  border-radius: 3px;
  border-bottom: 2px solid transparent;
  cursor: help;
  transition: background-color var(--transition), box-shadow var(--transition);
}
.annot:hover { box-shadow: 0 0 0 2px currentColor; }
.annot--persuasion   { background: #fee2e2; border-bottom-color: #dc2626; color: #991b1b; }
.annot--appeal       { background: #f3e8ff; border-bottom-color: #9333ea; color: #6b21a8; }
.annot--exaggeration { background: #fce7f3; border-bottom-color: #db2777; color: #9d174d; }
.annot--loaded       { background: #ffedd5; border-bottom-color: #ea580c; color: #9a3412; }
.annot--emotion      { background: #fef3c7; border-bottom-color: #d97706; color: #78350f; }

.annotation-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.75rem 1rem;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.annotation-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.annotation-legend__swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.annotate-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: var(--surface);
  color: var(--action-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition);
}
.annotate-toggle:hover { background: var(--action-soft); }
.annotate-toggle[aria-pressed="true"] {
  background: var(--action-soft);
  border-color: var(--action);
  color: var(--action-hover);
}

.how-this-works {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.how-this-works h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--brand-dark);
}
.how-this-works ul { list-style: none; padding: 0; margin: 0.5rem 0 0; }
.how-this-works li {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-muted);
  padding: 0.2rem 0;
}
.how-this-works li strong { color: var(--text); }
.how-this-works__footnote {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-style: italic;
}

/* ==================================================================
 * Article cards (daily brief individual articles)
 * ================================================================== */
.articles-section__heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 2rem 0 0.5rem;
}
.articles-section__sub {
  font-size: 0.85rem;
  color: var(--text-subtle);
  margin: 0 0 1rem;
}
.articles-section__empty {
  font-size: 0.88rem;
  color: var(--text-subtle);
  font-style: italic;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.article-card:hover { box-shadow: var(--shadow); border-color: var(--border-strong); }

.article-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
}
.article-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}
.article-card__header:hover .article-card__title { color: var(--action-hover); }
.article-card__chevron {
  font-size: 1.1rem;
  color: var(--text-subtle);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-top: 1px;
}
.article-card.is-expanded .article-card__chevron { transform: rotate(180deg); }

.article-card__header--nav { cursor: default; }
.article-card__title-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  line-height: 1.4;
  flex: 1;
}
.article-card__title-link:hover { color: var(--action-hover); text-decoration: underline; }

.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
}

.article-card__source {
  color: var(--text-subtle);
  font-weight: 500;
}

.article-card__lean {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
  border: 1px solid transparent;
}
.article-card__lean--lean-left   { background: #dbeafe; color: #1d4ed8; border-color: #bfdbfe; }
.article-card__lean--lean-center { background: #f3f4f6; color: #4b5563; border-color: #e5e7eb; }
.article-card__lean--lean-right  { background: #fee2e2; color: #b91c1c; border-color: #fecaca; }

.article-card__cred {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
}

.article-card__external {
  margin-left: auto;
  font-size: 0.9rem;
  color: var(--text-subtle);
  text-decoration: none;
  line-height: 1;
  flex-shrink: 0;
}
.article-card__external:hover { color: var(--action-hover); }

.article-card__detail {
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

.chunk-loading {
  font-size: 0.83rem;
  color: var(--text-subtle);
  font-style: italic;
}

.chunk-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  font-size: 0.78rem;
}

.chunk-body {
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--text);
}

.chunk { border-radius: 3px; padding: 0 2px; cursor: default; }
.chunk--flagged   { background: #fef3c7; cursor: help; position: relative; }
.chunk--emotional { background: #fef9e7; cursor: help; position: relative; }

.chunk--flagged::after,
.chunk--emotional::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: #1f2937;
  color: #f9fafb;
  font-size: 0.74rem;
  line-height: 1.4;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  max-width: 280px;
  white-space: normal;
  pointer-events: none;
  opacity: 0;
  z-index: 200;
  transition: opacity 0.12s ease;
}
.chunk--flagged:hover::after,
.chunk--emotional:hover::after { opacity: 1; }

/* ==================================================================
 * Responsive
 * ================================================================== */
@media (max-width: 640px) {
  .site-header__inner { flex-direction: column; gap: 0.85rem; }
  .hero__logo .brand__wordmark { font-size: 2rem; }
  .hero__logo .brand__icon { width: 38px; height: 38px; }
  .articles-grid { grid-template-columns: 1fr; }
}