/* =============================================
   MIZU AI — Insights / News Pages
   Extends the base design system (styles.css)
   ============================================= */

:root {
  --ins-content-width: 960px;
}

.ins-page {
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: 72px;
  overflow-x: clip;
}

.ins-content-narrow {
  max-width: var(--ins-content-width);
  margin: 0 auto;
}

/* ===== LISTING HERO ===== */
.ins-hero {
  padding: 80px 0 56px;
  text-align: center;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.ins-hero::before {
  content: '';
  position: absolute;
  top: -140px;
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 60%);
  pointer-events: none;
}

.ins-hero__inner {
  position: relative;
  max-width: 840px;
  margin: 0 auto;
}

.ins-tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.ins-hero h1 {
  font-size: clamp(1.875rem, 1.2rem + 2.5vw, var(--font-size-4xl));
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  text-wrap: balance;
}

.ins-hero__lead {
  font-size: clamp(1rem, 0.95rem + 0.35vw, var(--font-size-lg));
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 auto;
  max-width: 52ch;
}

/* ===== ARTICLE GRID ===== */
.ins-section {
  padding: 72px 0 96px;
}

.ins-grid {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.5vw, 24px);
  max-width: var(--ins-content-width);
  margin: 0 auto;
  width: 100%;
}

.ins-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--card-shadow);
  text-decoration: none;
  color: inherit;
  min-width: 0;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

/* Horizontal listing card */
.ins-card--row {
  flex-direction: row;
  align-items: stretch;
  padding: 0;
  overflow: hidden;
}

.ins-card__aside {
  position: relative;
  flex-shrink: 0;
  width: clamp(72px, 10%, 120px);
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--accent) 14%, var(--bg-secondary)) 0%,
    var(--accent-light) 45%,
    var(--bg-secondary) 100%
  );
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.ins-card__aside::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.18), transparent 55%),
    linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
  background-size: auto, 20px 20px, 20px 20px;
  pointer-events: none;
}

.ins-card__content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 3vw, 32px) clamp(22px, 3.5vw, 40px);
}

.ins-card--row .ins-card__title {
  font-size: clamp(1.25rem, 1rem + 0.8vw, var(--font-size-2xl));
  margin-bottom: 10px;
}

.ins-card--row .ins-card__excerpt {
  margin-bottom: 0;
  max-width: 72ch;
}

.ins-card--row .ins-card__meta {
  margin-top: auto;
  padding-top: 16px;
}

.ins-card__byline {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.ins-card__date {
  color: var(--text-muted);
}

@media (hover: hover) {
  .ins-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--accent);
  }

  .ins-card--row:hover .ins-card__read span {
    transform: translateX(3px);
  }
}

.ins-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.ins-card__tag {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 100px;
}

.ins-card__title {
  font-size: clamp(1.125rem, 1rem + 0.5vw, var(--font-size-xl));
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: var(--text-primary);
  text-wrap: pretty;
}

.ins-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 20px;
}

.ins-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 0;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.ins-card__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-light);
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid var(--border);
}

.ins-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ins-card__author {
  font-weight: 600;
  color: var(--text-primary);
}

.ins-card__read {
  margin-left: auto;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.ins-card__read span {
  display: inline-block;
  transition: transform var(--transition-fast);
}

/* ===== ARTICLE PAGE — Premium layout ===== */
.ins-page--article {
  background: var(--bg-primary);
}

.ins-read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #60A5FA);
  z-index: 200;
  transition: width 0.1s linear;
}

.ins-article-top {
  position: relative;
  padding: 48px 0 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.ins-article-top__glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse, var(--accent-light) 0%, transparent 70%);
  pointer-events: none;
}

/* Shared grid: TOC column + main content column (aligned with title) */
.ins-article-shell {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.ins-article-shell--body {
  padding-top: 56px;
  padding-bottom: 96px;
}

.ins-article-shell__aside {
  grid-column: 1;
}

.ins-article-main {
  grid-column: 2;
  min-width: 0;
  max-width: 820px;
}

.ins-article-top__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.ins-article-top h1 {
  font-size: clamp(1.75rem, 1.1rem + 2.8vw, 3.25rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  color: var(--text-primary);
  text-wrap: balance;
}

.ins-article-lead {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 68ch;
}

.ins-author-card {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
}

.ins-author-card .ins-meta-avatar {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .ins-author-card .ins-meta-avatar {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.ins-author-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.ins-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 100px;
}

.ins-chip svg {
  opacity: 0.7;
  flex-shrink: 0;
}

/* Two-column layout */
.ins-toc {
  grid-column: 1;
  position: sticky;
  top: 96px;
  padding: 20px 0;
}

.ins-toc__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.ins-toc__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 2px solid var(--border);
}

.ins-toc__nav a {
  display: block;
  padding: 8px 0 8px 16px;
  margin-left: -2px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.4;
}

.ins-toc__nav a:hover {
  color: var(--accent);
}

.ins-toc__nav a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.ins-article-body {
  grid-column: 2;
  max-width: 820px;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.ins-intro {
  margin-bottom: 8px;
}

.ins-intro p:first-child,
.ins-intro__lead {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--text-primary);
}

/* Story intro — question + punchline */
.ins-intro--story {
  margin-bottom: 12px;
}

.ins-intro__question {
  margin: 8px 0 16px;
  padding: 18px 22px;
  font-size: var(--font-size-lg);
  line-height: 1.6;
  color: var(--text-primary);
  background: color-mix(in srgb, var(--accent-light) 50%, var(--card-bg));
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  box-shadow: var(--card-shadow);
}

.ins-intro__question em {
  font-style: italic;
}

.ins-intro__punch {
  margin: 0 0 24px;
  padding: 16px 20px;
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px dashed color-mix(in srgb, var(--bad) 35%, var(--border));
  border-radius: var(--radius-lg);
}

.ins-intro__punch strong {
  color: var(--bad);
  font-weight: 800;
}

.ins-intro__close {
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--text-secondary);
}

.ins-article-body h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 56px 0 18px;
  padding-top: 8px;
  color: var(--text-primary);
  scroll-margin-top: 96px;
}

.ins-article-body h2::before {
  content: '';
  display: block;
  width: 32px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 14px;
}

.ins-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 28px;
  padding: 6px 12px 6px 8px;
  margin-left: -8px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.ins-back:hover {
  color: var(--accent);
  background: var(--accent-light);
}

.ins-back svg {
  transition: transform var(--transition-fast);
}

.ins-back:hover svg {
  transform: translateX(-3px);
}

/* Callout */
.ins-callout {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px 24px 56px;
  margin: 36px 0;
  box-shadow: var(--card-shadow);
}

.ins-callout--quote::before {
  content: '\201C';
  position: absolute;
  left: 20px;
  top: 12px;
  font-size: 2.5rem;
  line-height: 1;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.35;
  font-family: Georgia, serif;
}

.ins-callout--warn {
  border-color: color-mix(in srgb, var(--bad) 25%, var(--border));
  background: color-mix(in srgb, var(--bad-bg) 50%, var(--card-bg));
}

.ins-callout--warn::before {
  color: var(--bad);
}

.ins-callout p {
  margin: 0;
  font-size: var(--font-size-base);
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.7;
}

.ins-callout strong {
  color: var(--text-primary);
  font-style: normal;
  font-weight: 600;
}

/* Floating TOC — tablet & mobile */
.ins-toc-float {
  display: none;
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  width: min(400px, calc(100vw - 32px));
  z-index: 160;
  pointer-events: none;
}

.ins-toc-float__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .ins-toc-float__backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.ins-toc-float.is-open .ins-toc-float__backdrop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.ins-toc-float__panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 10px);
  width: 100%;
  max-height: min(58vh, 400px);
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--card-bg) 92%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid color-mix(in srgb, var(--border) 80%, var(--accent) 8%);
  border-radius: var(--radius-lg);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 20px 50px rgba(15, 23, 42, 0.16),
    0 8px 20px rgba(15, 23, 42, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transform-origin: bottom center;
  transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.28s ease;
  pointer-events: auto;
  overflow: hidden;
  z-index: 2;
}

[data-theme="dark"] .ins-toc-float__panel {
  background: color-mix(in srgb, var(--card-bg) 88%, transparent);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 24px 60px rgba(0, 0, 0, 0.5);
}

.ins-toc-float.is-open .ins-toc-float__panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.ins-toc-float__panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px 12px;
  flex-shrink: 0;
}

.ins-toc-float__panel-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.ins-toc-float__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.ins-toc-float__close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

.ins-toc-float__nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0 12px 12px;
  padding: 4px 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  border-left: 2px solid var(--border);
}

.ins-toc-float__nav a {
  display: block;
  padding: 9px 0 9px 14px;
  margin-left: -2px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.45;
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.ins-toc-float__nav a:hover {
  color: var(--accent);
}

.ins-toc-float__nav a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Trigger bar */
.ins-toc-float__btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 11px 14px 11px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--card-bg) 94%, transparent);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  color: var(--text-primary);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.5) inset,
    0 4px 6px rgba(15, 23, 42, 0.04),
    0 12px 32px rgba(15, 23, 42, 0.1);
  cursor: pointer;
  pointer-events: auto;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  z-index: 1;
  overflow: hidden;
}

.ins-toc-float__btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), #60A5FA);
  opacity: 0.85;
}

[data-theme="dark"] .ins-toc-float__btn {
  background: color-mix(in srgb, var(--card-bg) 90%, transparent);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 12px 36px rgba(0, 0, 0, 0.45);
}

.ins-toc-float__btn:active {
  transform: scale(0.98);
}

.ins-toc-float.is-open .ins-toc-float__btn {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.5) inset,
    0 8px 28px rgba(37, 99, 235, 0.12);
}

.ins-toc-float__btn-accent {
  width: 3px;
  height: 18px;
  border-radius: 2px;
  background: var(--accent);
  flex-shrink: 0;
  opacity: 0;
  transform: scaleY(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.ins-toc-float__btn.has-section .ins-toc-float__btn-accent {
  opacity: 1;
  transform: scaleY(1);
}

.ins-toc-float__btn-current {
  flex: 1;
  min-width: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.ins-toc-float__btn-current.is-placeholder {
  font-weight: 500;
  color: var(--text-secondary);
}

.ins-toc-float__btn-chevron {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), background 0.2s ease, color 0.2s ease;
}

.ins-toc-float.is-open .ins-toc-float__btn-chevron {
  transform: rotate(180deg);
  background: var(--accent-light);
  color: var(--accent);
}

.ins-toc-float.is-visible .ins-toc-float__btn {
  animation: ins-toc-float-in 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes ins-toc-float-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Comparison table — horizontal scroll on narrow screens */
.ins-compare {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 36px 0;
  box-shadow: var(--card-shadow);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.ins-compare table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.ins-compare th {
  background: var(--bg-secondary);
  padding: 14px 18px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.ins-compare th:not(:first-child) {
  border-left: 1px solid var(--border);
}

.ins-compare td {
  padding: 14px 18px;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
}

.ins-compare td:not(:first-child) {
  border-left: 1px solid var(--border-light);
}

.ins-compare tr:last-child td {
  border-bottom: none;
}

.ins-compare th.ins-compare__highlight,
.ins-compare td.ins-compare__highlight {
  background: color-mix(in srgb, var(--accent-light) 60%, var(--card-bg));
}

.ins-compare th:last-child {
  color: var(--accent);
}

.ins-check { color: var(--good); font-weight: 700; }
.ins-cross { color: var(--bad); font-weight: 700; }
.ins-partial { color: #D97706; font-weight: 700; }

[data-theme="dark"] .ins-partial { color: #FBBF24; }

/* Field cards */
.ins-four-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 36px 0;
}

/* Odd count: center the last card in the bottom row */
.ins-four-fields--center-last .ins-field-card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  width: calc((100% - 20px) / 2);
  justify-self: center;
}

.ins-field-card {
  position: relative;
  padding: 24px 22px 22px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.ins-field-card:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.ins-field-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #60A5FA);
  opacity: 0.85;
}

.ins-field-num {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
}

.ins-field-card h4 {
  font-size: var(--font-size-base);
  margin-bottom: 10px;
}

.ins-field-card p {
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* Audit terminal */
.ins-audit {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 36px 0;
  box-shadow: var(--card-shadow-hover);
  border-color: color-mix(in srgb, var(--accent) 20%, var(--border));
}

.ins-audit__chrome {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.ins-audit__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.ins-audit__dot--red { background: #FF5F57; }
.ins-audit__dot--yellow { background: #FEBC2E; }
.ins-audit__dot--green { background: #28C840; }

.ins-audit__chrome-title {
  margin-left: 8px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.ins-audit__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 20px;
  background: color-mix(in srgb, var(--accent-light) 40%, var(--bg-secondary));
  border-bottom: 1px solid var(--border);
}

.ins-audit__title {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.ins-audit__status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

.ins-audit__status--ok { color: var(--good); }
.ins-audit__status--warn { color: #D97706; }

.ins-audit__status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.ins-audit__fields {
  padding: 4px 20px 8px;
}

.ins-audit__field {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}

.ins-audit__field:last-child {
  border-bottom: none;
}

.ins-audit__key {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 500;
  padding-top: 2px;
}

.ins-audit__value {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.55;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.ins-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

.ins-pill--green { background: var(--good-bg); color: var(--good); }
.ins-pill--blue { background: var(--accent-light); color: var(--accent); }
.ins-pill--orange { background: rgba(217, 119, 6, 0.12); color: #D97706; }

[data-theme="dark"] .ins-pill--orange { color: #FBBF24; }

.ins-cta__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.ins-cta__heading {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

/* Premium CTA */
.ins-cta--premium {
  position: relative;
  margin-top: 64px;
  padding: 0;
  border: none;
  background: transparent;
  overflow: visible;
}

.ins-author-outro + .ins-cta--premium {
  margin-top: 0;
}

/* Author sign-off — transition to CTA */
.ins-author-outro {
  margin: 48px 0 0;
}

.ins-author-outro__card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 26px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
}

.ins-author-outro__avatar {
  flex-shrink: 0;
}

.ins-author-outro__avatar img {
  display: block;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--border-light);
  object-fit: cover;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] .ins-author-outro__avatar img {
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}

.ins-author-outro__content {
  flex: 1;
  min-width: 0;
}

.ins-author-outro__eyebrow {
  display: block;
  margin-bottom: 6px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.ins-author-outro__name {
  margin: 0 0 10px;
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

.ins-author-outro__role {
  display: block;
  margin-top: 2px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

@media (min-width: 480px) {
  .ins-author-outro__role {
    display: inline;
    margin-top: 0;
    margin-left: 6px;
    font-weight: 500;
  }

  .ins-author-outro__role::before {
    content: '·';
    margin-right: 6px;
    color: var(--text-muted);
  }
}

.ins-author-outro__text {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--text-secondary);
}

.ins-author-outro__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.ins-author-outro__link:hover {
  color: var(--accent-hover);
  gap: 8px;
}

.ins-author-outro__bridge {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 32px;
  padding: 0 12%;
}

.ins-author-outro__bridge-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border) 20%,
    var(--border) 80%,
    transparent 100%
  );
}

.ins-author-outro__bridge-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.ins-cta__glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at 30% 50%, var(--accent-light) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.ins-cta__content {
  position: relative;
  z-index: 1;
  padding: 40px 44px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow-hover);
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: hidden;
}

.ins-cta__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #60A5FA, var(--accent));
}

.ins-cta__body {
  max-width: 58ch;
  font-size: var(--font-size-base);
  line-height: 1.65;
}

.ins-cta--premium .btn--primary {
  width: fit-content;
  margin-top: 4px;
}

/* Legacy article styles (listing / fallback) */
.ins-article-hero {
  max-width: var(--ins-content-width);
  margin: 0 auto;
  padding: 64px 32px 48px;
}

.ins-article-hero h1 {
  font-size: clamp(2rem, 1.2rem + 2.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.ins-article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.ins-article-divider {
  max-width: var(--ins-content-width);
  margin: 0 auto;
  padding: 0 32px;
  border-top: 1px solid var(--border);
}

.ins-meta-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-light);
  flex-shrink: 0;
  overflow: hidden;
  border: 2px solid var(--border);
}

.ins-meta-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ins-meta-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ins-meta-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.ins-meta-role {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.ins-meta-date {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-align: right;
}

/* Article body typography (shared) */
.ins-article-body h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.ins-article-body p {
  color: var(--text-primary);
  margin-bottom: 20px;
  line-height: 1.75;
}

.ins-article-body ul,
.ins-article-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ins-article-body li {
  color: var(--text-primary);
  line-height: 1.7;
}

.ins-article-body strong {
  font-weight: 600;
  color: var(--accent);
}

.ins-article-body code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.875em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  color: var(--accent);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.ins-article-body ul li::marker {
  color: var(--accent);
}

/* Legacy CTA (listing) */
.ins-cta:not(.ins-cta--premium) {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ins-back--legacy {
  margin-bottom: 28px;
}

/* ===== Responsive — all viewport sizes ===== */

/* Large desktop / ultra-wide */
@media (min-width: 1440px) {
  .ins-article-shell {
    grid-template-columns: 220px minmax(0, 820px);
    gap: 56px;
    max-width: 1180px;
    margin-left: auto;
    margin-right: auto;
  }

  .ins-hero__inner {
    max-width: 900px;
  }

  .ins-grid {
    max-width: var(--ins-content-width);
  }
}

/* Horizontal card — stack on narrow screens */
@media (max-width: 640px) {
  .ins-card--row {
    flex-direction: column;
  }

  .ins-card__aside {
    width: 100%;
    height: 40px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .ins-card__content {
    padding: 20px;
  }

  .ins-card--row .ins-card__meta {
    flex-wrap: wrap;
    gap: 12px;
  }

  .ins-card__read {
    margin-left: 0;
    width: 100%;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
  }
}

@media (min-width: 1920px) {
  .ins-section {
    padding: 80px 0 112px;
  }

  .ins-article-shell--body {
    padding-bottom: 112px;
  }
}

/* Tablet landscape / small laptop */
@media (max-width: 1200px) {
  .ins-article-shell {
    gap: 40px;
    grid-template-columns: 180px minmax(0, 1fr);
  }

  .ins-article-main,
  .ins-article-body {
    max-width: none;
  }
}

/* Tablet — hide sidebar TOC, show mobile TOC */
@media (max-width: 1024px) {
  .ins-article-shell {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .ins-article-shell__aside {
    display: none;
  }

  .ins-article-main,
  .ins-article-body {
    grid-column: 1;
    max-width: none;
  }

  .ins-toc {
    display: none;
  }

  .ins-toc-float:not([hidden]) {
    display: block;
  }

  .ins-page--article .ins-article-shell--body {
    padding-bottom: calc(110px + env(safe-area-inset-bottom, 0px));
  }

  .ins-article-shell--body {
    padding-top: 32px;
  }

  .ins-hero {
    padding: 64px 0 48px;
  }

  .ins-section {
    padding: 56px 0 80px;
  }
}

/* Tablet portrait */
@media (max-width: 768px) {
  .ins-toc-float {
    width: min(380px, calc(100vw - 28px));
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  .ins-toc-float__panel {
    max-height: min(52vh, 360px);
  }

  .ins-hero {
    padding: 56px 0 40px;
  }

  .ins-hero::before {
    width: 100%;
    max-width: 480px;
    height: 480px;
  }

  .ins-section {
    padding: 48px 0 72px;
  }

  .ins-article-top {
    padding: 36px 0 44px;
  }

  .ins-article-shell--body {
    padding-top: 24px;
    padding-bottom: 72px;
  }

  .ins-article-body h2 {
    margin: 44px 0 16px;
    font-size: var(--font-size-xl);
    scroll-margin-top: 88px;
  }

  .ins-four-fields {
    gap: 16px;
  }

  .ins-author-outro {
    margin: 36px 0 0;
  }

  .ins-author-outro__card {
    flex-direction: column;
    gap: 16px;
    padding: 20px 18px;
  }

  .ins-author-outro__bridge {
    margin: 22px 0 26px;
    padding: 0 4%;
  }

  .ins-cta--premium {
    margin-top: 48px;
  }

  .ins-author-outro + .ins-cta--premium {
    margin-top: 0;
  }

  .ins-cta__heading {
    font-size: var(--font-size-xl);
  }
}

/* Large phones */
@media (max-width: 600px) {
  .ins-author-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
  }

  .ins-author-card__meta {
    margin-left: 0;
    width: 100%;
  }

  .ins-audit__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
  }

  .ins-audit__title {
    font-size: 0.6875rem;
    line-height: 1.5;
  }

  .ins-audit__fields {
    padding: 4px 16px 8px;
  }

  .ins-callout {
    margin: 28px 0;
  }

  .ins-compare {
    margin: 28px 0;
  }

  .ins-four-fields,
  .ins-audit {
    margin: 28px 0;
  }
}

/* Standard phones */
@media (max-width: 480px) {
  .ins-toc-float {
    width: calc(100vw - 24px);
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  .ins-toc-float__btn {
    min-height: 46px;
    padding: 10px 12px 10px 14px;
    gap: 10px;
  }

  .ins-toc-float__btn-chevron {
    width: 26px;
    height: 26px;
  }

  .ins-toc-float__btn-current {
    font-size: var(--font-size-xs);
  }

  .ins-page {
    padding-top: 64px;
  }

  .ins-hero {
    padding: 48px 0 32px;
  }

  .ins-section {
    padding: 40px 0 64px;
  }

  .ins-four-fields {
    grid-template-columns: 1fr;
  }

  .ins-four-fields--center-last .ins-field-card:last-child:nth-child(odd) {
    grid-column: auto;
    width: auto;
    justify-self: stretch;
  }

  .ins-audit__field {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 0;
  }

  .ins-article-hero {
    padding: 48px 20px;
  }

  .ins-article-divider {
    padding: 0 20px;
  }

  .ins-article-top {
    padding: 28px 0 36px;
  }

  .ins-author-card__meta {
    margin-left: 0;
    width: 100%;
  }

  .ins-cta__content {
    padding: 24px 20px;
  }

  .ins-callout {
    padding: 18px 18px 18px 44px;
  }

  .ins-callout--quote::before {
    left: 14px;
    font-size: 2rem;
  }

  .ins-back {
    margin-bottom: 20px;
    font-size: var(--font-size-xs);
  }

  .ins-article-lead {
    margin-bottom: 24px;
  }

  .ins-cta--premium .btn--primary {
    width: 100%;
    justify-content: center;
  }
}

/* iPhone 14 Pro / similar (430px) */
@media (max-width: 430px) {
  .ins-card {
    padding: 18px;
  }

  .ins-card__tag {
    font-size: 0.625rem;
    padding: 3px 8px;
  }

  .ins-chip {
    font-size: 0.6875rem;
    padding: 5px 10px;
  }
}

/* iPhone 12/13/14 (390–393px) */
@media (max-width: 393px) {
  .ins-hero h1 {
    letter-spacing: -0.015em;
  }

  .ins-article-top h1 {
    letter-spacing: -0.02em;
  }

  .ins-meta-avatar {
    width: 40px;
    height: 40px;
  }

  .ins-author-card .ins-meta-avatar {
    width: 44px;
    height: 44px;
  }
}

/* iPhone SE / small Android (375px) */
@media (max-width: 375px) {
  .ins-card__title {
    font-size: 1.0625rem;
  }

  .ins-article-body p,
  .ins-intro p:first-child {
    font-size: var(--font-size-sm);
  }

  .ins-field-card {
    padding: 18px 16px;
  }
}

/* Very small screens (360px and below) */
@media (max-width: 360px) {
  .ins-hero__lead {
    font-size: 0.9375rem;
  }

  .ins-card__excerpt {
    font-size: 0.8125rem;
  }

  .ins-audit__chrome-title {
    font-size: 0.625rem;
  }
}

/* Landscape phones & short viewports */
@media (max-height: 500px) and (orientation: landscape) {
  .ins-hero {
    padding: 40px 0 28px;
  }

  .ins-article-top {
    padding: 24px 0 28px;
  }

  .ins-toc {
    top: 72px;
  }
}

@media (max-height: 440px) and (min-width: 600px) and (orientation: landscape) {
  .ins-page {
    padding-top: 64px;
  }
}

/* Safe area (notched devices) */
@supports (padding: env(safe-area-inset-bottom)) {
  .ins-section {
    padding-bottom: calc(96px + env(safe-area-inset-bottom));
  }

  .ins-article-shell--body {
    padding-bottom: calc(96px + env(safe-area-inset-bottom));
  }

  .footer {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* Audit gap — four questions grid */
.ins-audit-questions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 20px;
}

/* Odd count: center the last card in the bottom row */
.ins-audit-questions--center-last .ins-audit-question:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  width: calc((100% - 14px) / 2);
  justify-self: center;
}

.ins-audit-question {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.ins-audit-question:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  box-shadow: var(--card-shadow-hover);
}

.ins-audit-question__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent);
}

.ins-audit-question__text {
  margin: 0;
  padding-top: 10px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-secondary);
}

.ins-audit-question__text strong {
  display: block;
  margin-bottom: 6px;
  font-size: var(--font-size-base);
  font-weight: 700;
  line-height: 1.4;
  color: var(--accent);
}

.ins-audit-questions__verdict {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 8px;
  padding: 18px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--bad) 22%, var(--border));
  background: color-mix(in srgb, var(--bad-bg) 55%, var(--card-bg));
}

.ins-audit-questions__verdict-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bad);
}

.ins-audit-questions__verdict p {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--text-secondary);
}

.ins-audit-questions__verdict strong {
  color: var(--text-primary);
}

/* Audit gap — four-stage timeline */
.ins-stages {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 32px 0 24px;
}

.ins-stage {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.ins-stage__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 4px;
}

.ins-stage__dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  color: var(--text-secondary);
  flex-shrink: 0;
  z-index: 1;
}

.ins-stage__line {
  flex: 1;
  width: 2px;
  min-height: 24px;
  margin: 6px 0;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--stage-color, var(--accent)) 55%, var(--border)) 0%,
    var(--border) 100%
  );
}

.ins-stage:last-child .ins-stage__line {
  display: none;
}

.ins-stage__card {
  position: relative;
  margin-bottom: 18px;
  padding: 20px 22px 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.ins-stage__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--stage-color, var(--accent));
  opacity: 0.9;
}

.ins-stage__label {
  display: inline-block;
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stage-color, var(--accent));
}

.ins-stage__title {
  margin: 0 0 10px;
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

.ins-stage__card p {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--text-secondary);
}

.ins-stage__card strong {
  color: var(--text-primary);
  font-weight: 600;
}

.ins-stage--s1 {
  --stage-color: var(--good);
}

.ins-stage--s1 .ins-stage__dot {
  border-color: color-mix(in srgb, var(--good) 40%, var(--border));
  background: var(--good-bg);
  color: var(--good);
}

.ins-stage--s2 {
  --stage-color: var(--accent);
}

.ins-stage--s2 .ins-stage__dot {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: var(--accent-light);
  color: var(--accent);
}

.ins-stage--s3 {
  --stage-color: #D97706;
}

.ins-stage--s3 .ins-stage__dot {
  border-color: color-mix(in srgb, #D97706 40%, var(--border));
  background: rgba(217, 119, 6, 0.1);
  color: #D97706;
}

[data-theme="dark"] .ins-stage--s3 {
  --stage-color: #FBBF24;
}

[data-theme="dark"] .ins-stage--s3 .ins-stage__dot {
  border-color: color-mix(in srgb, #FBBF24 40%, var(--border));
  background: rgba(251, 191, 36, 0.12);
  color: #FBBF24;
}

.ins-stage--s4 {
  --stage-color: var(--bad);
}

.ins-stage--s4 .ins-stage__dot {
  border-color: color-mix(in srgb, var(--bad) 40%, var(--border));
  background: var(--bad-bg);
  color: var(--bad);
}

.ins-stage-summary {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin: 8px 0 4px;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  border: 1px dashed color-mix(in srgb, var(--accent) 35%, var(--border));
  background: color-mix(in srgb, var(--accent-light) 70%, var(--card-bg));
}

.ins-stage-summary__arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--accent);
}

.ins-stage-summary p {
  margin: 0;
  padding-top: 8px;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--text-secondary);
}

.ins-stage-summary strong {
  color: var(--text-primary);
}

@media (max-width: 600px) {
  .ins-audit-questions {
    grid-template-columns: 1fr;
    margin: 24px 0 16px;
  }

  .ins-audit-questions--center-last .ins-audit-question:last-child:nth-child(odd) {
    grid-column: auto;
    width: auto;
    justify-self: stretch;
  }

  .ins-audit-question__text {
    padding-top: 6px;
  }

  .ins-intro__punch {
    font-size: var(--font-size-lg);
    padding: 14px 16px;
  }

  .ins-stages {
    margin: 24px 0 20px;
  }

  .ins-stage {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
  }

  .ins-stage__dot {
    width: 38px;
    height: 38px;
  }

  .ins-stage__dot svg {
    width: 17px;
    height: 17px;
  }

  .ins-stage__card {
    padding: 16px 16px 14px;
    margin-bottom: 14px;
  }

  .ins-stage-summary {
    flex-direction: column;
    gap: 12px;
  }

  .ins-stage-summary__arrow {
    transform: rotate(90deg);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .ins-card,
  .ins-field-card,
  .ins-back svg {
    transition: none;
  }

  @media (hover: hover) {
    .ins-card:hover,
    .ins-field-card:hover {
      transform: none;
    }
  }
}