/* ==========================================================================
   Blog TrocaFast — Editorial Tech
   Tokens + base + components
   ========================================================================== */

:root {
  /* Surfaces */
  --bg:            #FFFFFF;
  --bg-soft:       #FAFAF9;
  --bg-cream:      #F4F6FA;
  --bg-ink:        #0F2D54;    /* TrocaFast deep blue */

  /* Text */
  --ink:           #0A0A0A;
  --ink-2:         #1C1917;
  --muted:         #57534E;
  --muted-2:       #A8A29E;
  --on-ink:        #FAFAF9;

  /* Lines */
  --border:        #E7E5E4;
  --border-strong: #D6D3D1;
  --hairline:      rgba(10, 10, 10, 0.08);

  /* Brand — TrocaFast */
  --accent:        #E62824;    /* TrocaFast red */
  --accent-ink:    #FFFFFF;
  --accent-soft:   #FFEAE9;
  --accent-deep:   #B81F1B;
  --brand-blue:    #18447C;    /* TrocaFast blue */
  --brand-blue-deep: #0F2D54;

  /* Status */
  --success:       #16A34A;
  --warning:       #D97706;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 8px;
  --r:    12px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* Shadows — restrained */
  --shadow-sm: 0 1px 0 rgba(10,10,10,.04), 0 1px 2px rgba(10,10,10,.04);
  --shadow:    0 1px 0 rgba(10,10,10,.04), 0 6px 24px -8px rgba(10,10,10,.10);
  --shadow-lg: 0 20px 60px -20px rgba(10,10,10,.22);

  /* Type */
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body:    'Space Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --container:    1200px;
  --container-wide: 1320px;
  --container-prose: 720px;
  --gutter:       24px;
}

/* Reset (minimal) ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
hr { border: none; border-top: 1px solid var(--border); margin: 0; }
::selection { background: var(--ink); color: var(--bg); }

/* Containers ---------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container-wide { width: 100%; max-width: var(--container-wide); margin: 0 auto; padding: 0 var(--gutter); }
.container-prose { width: 100%; max-width: var(--container-prose); margin: 0 auto; padding: 0 var(--gutter); }

/* Typography ---------------------------------------------------------------- */
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.kicker::before {
  content: "";
  width: 18px; height: 1px; background: currentColor; opacity: .5;
}
.kicker--accent { color: var(--accent); }
.kicker--light  { color: rgba(250,250,249,.7); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
}

.display-xl { font-size: clamp(48px, 7vw, 96px); line-height: 0.95; letter-spacing: -0.04em; font-weight: 500; }
.display    { font-size: clamp(40px, 5vw, 64px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 500; }
.title-xl   { font-size: clamp(32px, 4vw, 48px); line-height: 1.05; letter-spacing: -0.025em; font-weight: 600; }
.title-lg   { font-size: clamp(26px, 3vw, 36px); line-height: 1.1;  letter-spacing: -0.02em;  font-weight: 600; }
.title-md   { font-size: 22px; line-height: 1.2; letter-spacing: -0.015em; font-weight: 600; }
.title-sm   { font-size: 17px; line-height: 1.3; font-weight: 600; }

.lead { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.5; color: var(--ink-2); text-wrap: pretty; }
.text-sm { font-size: 14px; }
.text-mono { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; }
.muted { color: var(--muted); }

/* Buttons ------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--ink);
  color: var(--on-ink);
}
.btn-primary:hover { background: var(--accent); color: var(--accent-ink); }

.btn-accent {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-accent:hover { background: var(--accent-deep); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }

.btn-light {
  background: var(--bg);
  color: var(--ink);
}
.btn-light:hover { background: var(--accent); color: var(--accent-ink); }

.btn-sm { padding: 9px 14px; font-size: 13px; }
.btn .arrow { display: inline-block; transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* Header -------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: flex; align-items: center; gap: 24px;
  height: 68px;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.02em;
}
.brand__logo {
  display: block;
  height: 38px;
  width: auto;
  flex: none;
}
.brand__mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--brand-blue); color: var(--on-ink);
  font-family: var(--font-mono); font-size: 13px; font-weight: 700;
  letter-spacing: 0;
}
.brand__tag {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
  padding-left: 12px; margin-left: 2px;
  border-left: 1px solid var(--border);
}

.site-nav {
  display: flex; gap: 4px; margin-left: auto;
  align-items: center;
}
.site-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink-2);
  transition: background .15s ease, color .15s ease;
}
.site-nav a:hover { background: var(--bg-cream); }
.site-nav a.is-active { background: var(--brand-blue); color: var(--on-ink); }
.site-nav__cta { margin-left: 8px; }

.menu-btn {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  background: transparent;
  border-radius: 10px;
  margin-left: auto;
}

/* Hero ---------------------------------------------------------------------- */
.hero {
  padding: 56px 0 24px;
  border-bottom: 1px solid var(--border);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: start;
}
.hero__meta {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero__title {
  margin-bottom: 24px;
}
.hero__lead {
  max-width: 56ch;
  margin-bottom: 32px;
}
.hero__cta-row {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
}
.hero__cta-row .meta {
  font-family: var(--font-mono); font-size: 12px; color: var(--muted);
  letter-spacing: 0.04em;
}
.hero__media {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-cream);
  max-height: 560px;
}
.hero__media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: contrast(1.02) saturate(1.02);
}
.hero__badge {
  position: absolute; left: 16px; top: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(15,45,84,0.92);
  color: var(--on-ink);
  padding: 8px 12px;
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  backdrop-filter: blur(8px);
}
.hero__badge .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px rgba(230,40,36,0.25);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(230,40,36,0.25); }
  50% { box-shadow: 0 0 0 6px rgba(230,40,36,0.05); }
}

/* Marquee strip ------------------------------------------------------------- */
.strip {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  overflow: hidden;
}
.strip__inner {
  display: flex; gap: 48px;
  padding: 14px 0;
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
  animation: marquee 38s linear infinite;
}
.strip__inner > span {
  display: inline-flex; align-items: center; gap: 12px;
}
.strip__inner > span::after {
  content: "✦"; color: var(--accent); margin-left: 48px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Section header ------------------------------------------------------------ */
.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }
.section--soft { background: var(--bg-soft); }
.section--ink  { background: var(--bg-ink); color: var(--on-ink); }
.section--ink h1, .section--ink h2, .section--ink h3 { color: var(--on-ink); }

.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 32px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.section-head__title { max-width: 22ch; }
.section-head__link {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px;
}
.section-head__link:hover { color: var(--accent); }

/* Post cards ---------------------------------------------------------------- */
.card-grid {
  display: grid; gap: 40px 32px;
  grid-template-columns: repeat(3, 1fr);
}
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--feature {
  grid-template-columns: 1.5fr 1fr 1fr;
}

.card {
  display: flex; flex-direction: column;
  gap: 16px;
  position: relative;
  isolation: isolate;
}
.card__cover {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: var(--r);
  overflow: hidden;
  background: var(--bg-cream);
  position: relative;
}
.card__cover img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s cubic-bezier(.2,.7,.2,1);
}
.card:hover .card__cover img { transform: scale(1.04); }
.card__cover::after {
  content: "";
  position: absolute; inset: 0;
  box-shadow: inset 0 0 0 1px var(--hairline);
  border-radius: inherit;
  pointer-events: none;
}
.card__meta {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
}
.card__cat {
  color: var(--ink);
  padding-bottom: 1px;
  border-bottom: 1px solid currentColor;
}
.card__cat:hover { color: var(--accent); }
.card__title {
  font-family: var(--font-display);
  font-weight: 600; letter-spacing: -0.02em;
  font-size: 22px; line-height: 1.18;
  color: var(--ink);
  text-wrap: balance;
}
.card__title a { background-image: linear-gradient(var(--accent), var(--accent)); background-repeat: no-repeat; background-size: 0 1px; background-position: 0 100%; transition: background-size .3s ease; }
.card:hover .card__title a { background-size: 100% 1px; }
.card__excerpt {
  color: var(--muted); font-size: 15px; line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* Featured (large) card */
.card--feature .card__cover { aspect-ratio: 5 / 6; }
.card--feature .card__title { font-size: 32px; line-height: 1.08; }
.card--feature .card__excerpt { -webkit-line-clamp: 3; }

/* List card (no image) */
.card--list { flex-direction: row; gap: 20px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid var(--border); }
.card--list:first-child { border-top: 1px solid var(--border); }
.card--list .card__index {
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
  letter-spacing: 0.08em; padding-top: 4px; min-width: 40px;
}
.card--list .card__title { font-size: 18px; }
.card--list .card__meta { margin-top: 8px; }

/* Editorial split card */
.card--split {
  grid-column: span 3;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.card--split .card__cover { aspect-ratio: 16 / 10; margin: 0; }
.card--split .card__title { font-size: 36px; line-height: 1.05; }
.card--split .card__body { display: flex; flex-direction: column; gap: 16px; }

/* Layout w/ sidebar */
.layout-2col {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
}

/* Sidebar ------------------------------------------------------------------- */
.sidebar { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 28px; }
.side-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
}
.side-card--ink {
  background: var(--bg-ink); color: var(--on-ink); border: none;
}
.side-card--ink h3 { color: var(--on-ink); }
.side-card--accent {
  background: var(--accent); color: var(--accent-ink); border: none;
}
.side-card--accent h3 { color: var(--accent-ink); }
.side-card h3 { font-size: 15px; margin-bottom: 14px; letter-spacing: -0.01em; }
.side-card p { font-size: 14px; line-height: 1.55; margin: 0 0 16px; }
.side-card--ink p { color: rgba(250,250,249,.7); }
.side-card--accent p { color: rgba(255,255,255,.92); }

/* Category list */
.cat-list { display: flex; flex-direction: column; }
.cat-list a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  transition: padding .2s ease, color .2s ease;
}
.cat-list a:last-child { border-bottom: none; }
.cat-list a:hover { padding-left: 6px; color: var(--accent); }
.cat-list a strong {
  font-family: var(--font-mono); font-weight: 500; color: var(--muted); font-size: 12px;
}

/* Mini avaliação form */
.mini-eval {
  display: flex; flex-direction: column; gap: 10px;
}
.mini-eval label {
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.mini-eval select, .mini-eval input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  font-family: inherit; font-size: 14px;
  background: var(--bg);
  color: var(--ink);
  transition: border-color .15s ease;
}
.side-card--ink .mini-eval select,
.side-card--ink .mini-eval input {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.18);
  color: var(--on-ink);
}
.side-card--ink .mini-eval label { color: rgba(250,250,249,.7); }
.mini-eval select:focus, .mini-eval input:focus {
  outline: none; border-color: var(--accent);
}

/* Featured inline (avaliação banda) ---------------------------------------- */
.eval-band {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  background:
    radial-gradient(80% 60% at 100% 100%, rgba(230,40,36,.10), transparent 70%),
    radial-gradient(80% 60% at 0% 0%, rgba(24,68,124,.08), transparent 70%),
    var(--bg);
}
.eval-band__title { font-size: clamp(28px, 3vw, 40px); line-height: 1.05; margin-bottom: 16px; }
.eval-band__bullets {
  display: flex; flex-direction: column; gap: 10px;
  margin: 20px 0;
  font-size: 15px;
}
.eval-band__bullets li {
  display: flex; align-items: flex-start; gap: 10px;
  color: var(--ink-2);
}
.eval-band__bullets li::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); margin-top: 8px; flex: none;
}
.eval-band__form {
  background: var(--brand-blue-deep); color: var(--on-ink);
  padding: 28px; border-radius: var(--r);
  display: flex; flex-direction: column; gap: 14px;
}
.eval-band__form h4 {
  font-family: var(--font-display); font-size: 18px; color: var(--on-ink); margin: 0 0 4px; font-weight: 600;
}
.eval-band__form p { margin: 0; font-size: 13px; color: rgba(250,250,249,.7); }
.eval-band__form input, .eval-band__form select {
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  color: var(--on-ink);
  font-family: inherit;
  font-size: 14px;
}
.eval-band__form input::placeholder { color: rgba(250,250,249,.5); }
.eval-band__form input:focus, .eval-band__form select:focus {
  outline: none; border-color: var(--accent); background: rgba(255,255,255,0.08);
}

/* Newsletter ---------------------------------------------------------------- */
.newsletter {
  background: var(--bg-ink);
  color: var(--on-ink);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.newsletter::before {
  content: "";
  position: absolute; right: -20%; top: -20%;
  width: 60%; aspect-ratio: 1;
  background: radial-gradient(circle, rgba(230,40,36,0.22), transparent 60%);
  pointer-events: none;
}
.newsletter__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  position: relative;
}
.newsletter h2 { color: var(--on-ink); font-size: clamp(32px, 4vw, 56px); line-height: 1.02; letter-spacing: -0.025em; }
.newsletter p { color: rgba(250,250,249,.7); font-size: 16px; max-width: 50ch; }

.subscribe {
  display: flex; flex-direction: column; gap: 14px;
}
.subscribe__row {
  display: flex; gap: 10px;
}
.subscribe input {
  flex: 1;
  padding: 16px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.04);
  color: var(--on-ink);
  font-family: inherit; font-size: 15px;
}
.subscribe input::placeholder { color: rgba(250,250,249,.5); }
.subscribe input:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,0.08); }
.subscribe__hint { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(250,250,249,.5); }
.subscribe__msg { font-size: 13px; min-height: 18px; color: var(--accent); }
.subscribe__msg.is-success { color: #4ADE80; }

/* Footer -------------------------------------------------------------------- */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 64px 0 40px;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.site-footer h4 {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 16px; font-weight: 500;
}
.site-footer ul { display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.site-footer ul a { color: var(--ink-2); }
.site-footer ul a:hover { color: var(--accent); }
.site-footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.06em; color: var(--muted);
}

/* Pagination ---------------------------------------------------------------- */
.pagination {
  display: flex; gap: 8px; justify-content: center; margin-top: 48px;
}
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 12px;
  font-family: var(--font-mono); font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--ink-2);
  transition: all .15s ease;
}
.pagination a:hover { border-color: var(--brand-blue); color: var(--brand-blue); }
.pagination .active { background: var(--brand-blue); color: var(--on-ink); border-color: var(--brand-blue); }

/* ==========================================================================
   POST / ARTICLE PAGE
   ========================================================================== */

.reading-progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 3px;
  background: transparent;
  z-index: 60;
  pointer-events: none;
}
.reading-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 80ms linear;
}

.post-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}
.post-hero__meta {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  margin-bottom: 24px;
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.06em; color: var(--muted); text-transform: uppercase;
}
.post-hero__meta .dot { width: 3px; height: 3px; background: currentColor; border-radius: 50%; opacity: .5; }
.post-hero__cat {
  color: var(--accent);
}
.post-hero__title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 24px;
  text-wrap: balance;
}
.post-hero__lead {
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.5;
  color: var(--muted);
  max-width: 60ch;
  text-wrap: pretty;
}
.post-hero__cover {
  margin-top: 40px;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-cream);
}
.post-hero__cover img { width: 100%; height: 100%; object-fit: cover; }

.post-byline {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-top: 32px;
}
.byline__avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: var(--on-ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 600; font-size: 13px;
}
.byline__name { font-weight: 600; font-size: 14px; }
.byline__role { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }

/* Article body */
.article-layout {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 320px;
  gap: 24px;
  padding: 56px 0 80px;
  position: relative;
}
.share-rail {
  position: sticky; top: 96px;
  display: flex; flex-direction: column; gap: 8px;
  height: max-content;
}
.share-rail button, .share-rail a {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 50%;
  color: var(--muted);
  transition: all .15s ease;
}
.share-rail button:hover, .share-rail a:hover {
  border-color: var(--ink); color: var(--ink);
}
.share-rail__label {
  writing-mode: vertical-rl;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin: 0 auto 8px; transform: rotate(180deg);
}

.article {
  max-width: 680px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-2);
}
.article > * + * { margin-top: 1.1em; }
.article h2 {
  font-size: clamp(24px, 2.5vw, 32px);
  line-height: 1.18; letter-spacing: -0.02em;
  margin-top: 2em; margin-bottom: 0.5em;
  color: var(--ink);
}
.article h3 {
  font-size: 22px; line-height: 1.25; letter-spacing: -0.015em;
  margin-top: 1.6em; margin-bottom: 0.4em;
}
.article p { margin: 0 0 1em; }
.article ul, .article ol { margin: 1em 0; padding-left: 1.4em; }
.article li { margin-bottom: 0.5em; }
.article a {
  color: var(--ink);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-size: 100% 1px;
  background-position: 0 95%;
}
.article a:hover { background-image: linear-gradient(var(--accent-deep), var(--accent-deep)); }
.article strong { color: var(--ink); font-weight: 600; }
.article blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 24px;
  margin: 2em 0;
  font-family: var(--font-display);
  font-size: 22px; line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-weight: 500;
}
.article hr { margin: 2.5em 0; }

/* Inline CTA (mid-article) */
.cta-inline {
  margin: 48px 0;
  padding: 32px;
  background: var(--bg-cream);
  border-radius: var(--r);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px; align-items: center;
}
.cta-inline h4 {
  font-size: 22px; line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 6px;
  font-family: var(--font-display); font-weight: 600;
}
.cta-inline p { margin: 0; font-size: 14px; color: var(--muted); }
.cta-inline__kicker {
  display: inline-block;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}

/* TOC (slim, mini, in sidebar) */
.toc { padding: 24px; border: 1px solid var(--border); border-radius: var(--r); }
.toc h4 { margin: 0 0 12px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.toc ol { display: flex; flex-direction: column; gap: 8px; padding: 0; counter-reset: toc; }
.toc li { counter-increment: toc; font-size: 14px; line-height: 1.4; padding-left: 24px; position: relative; }
.toc li::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
}
.toc a { color: var(--ink-2); transition: color .15s ease; }
.toc a:hover, .toc a.is-active { color: var(--accent); }

/* Author bio block (post end) */
.author-block {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  margin: 40px 0 0;
}
.author-block__avatar { width: 64px; height: 64px; flex: none; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-deep)); display: inline-flex; align-items: center; justify-content: center; color: var(--on-ink); font-family: var(--font-mono); font-weight: 600; }
.author-block h4 { font-size: 16px; margin: 0 0 4px; }
.author-block p { margin: 0; font-size: 14px; color: var(--muted); }
.author-block__role { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }

/* Related */
.related { padding: 64px 0; border-top: 1px solid var(--border); }

/* Category hero ------------------------------------------------------------- */
.cat-hero {
  padding: 80px 0 56px;
  border-bottom: 1px solid var(--border);
}
.cat-hero__meta {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  margin-bottom: 16px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.cat-hero__title {
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.96; letter-spacing: -0.035em; font-weight: 500;
  margin-bottom: 20px;
}
.cat-hero__desc { max-width: 56ch; font-size: 18px; color: var(--muted); }

.cat-tabs {
  display: flex; gap: 6px; padding: 24px 0; flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}
.cat-tabs a {
  padding: 8px 14px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  transition: all .15s ease;
}
.cat-tabs a:hover { color: var(--brand-blue); border-color: var(--brand-blue); }
.cat-tabs a.is-active { background: var(--brand-blue); color: var(--on-ink); border-color: var(--brand-blue); }

/* Misc ---------------------------------------------------------------------- */
.notice {
  padding: 28px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--r);
  color: var(--muted);
  background: var(--bg-soft);
}

/* Sticky CTA bar (mobile / contextual) ------------------------------------- */
.cta-bar {
  position: fixed; left: 16px; right: 16px; bottom: 16px;
  background: var(--ink); color: var(--on-ink);
  border-radius: 999px;
  padding: 12px 12px 12px 22px;
  display: none; align-items: center; justify-content: space-between;
  z-index: 40;
  box-shadow: var(--shadow-lg);
}
.cta-bar strong { font-size: 14px; }
.cta-bar small { display: block; font-size: 12px; opacity: 0.7; font-family: var(--font-mono); letter-spacing: 0.04em; }
.cta-bar .btn { padding: 10px 16px; font-size: 13px; }

/* Responsive ---------------------------------------------------------------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .layout-2col { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .article-layout { grid-template-columns: minmax(0, 1fr) 320px; }
  .article-layout > .share-rail { display: none; }
  .newsletter__grid { grid-template-columns: 1fr; gap: 32px; }
  .eval-band { grid-template-columns: 1fr; padding: 32px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid--feature { grid-template-columns: 1fr; }
  .card--split { grid-template-columns: 1fr; gap: 20px; }
  .card--split .card__title { font-size: 28px; }
}
@media (max-width: 720px) {
  .site-nav { display: none; }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .hero { padding: 32px 0; }
  .section { padding: 48px 0; }
  .card-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-layout { grid-template-columns: 1fr; padding: 32px 0 56px; }
  .article-layout > .sidebar { display: none; }
  .article { font-size: 17px; }
  .post-hero { padding: 32px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
  .cta-band { padding: 32px; }
  .cta-inline { grid-template-columns: 1fr; }
  .author-block { flex-direction: column; }
  .cta-bar { display: flex; }
}