@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,600;1,300;1,400&family=IBM+Plex+Serif:ital,wght@0,300;0,400;1,300;1,400&display=swap');

/* ─────────────────────────────────────────
   IBM RESEARCH THEME FOR HUGO
   Reference: research.ibm.com
   ───────────────────────────────────────── */

/* ── PROGRESS INDICATOR ── */
.progress-indicator {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
}
.progress-indicator__list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.progress-indicator__item {
  margin: 1.5rem 0;
}
.progress-indicator__link {
  position: relative;
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all 110ms var(--ease);
}
.progress-indicator__link::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cool-03);
  border: 2px solid var(--cool-03);
  transition: all 110ms var(--ease);
  flex-shrink: 0;
}
.progress-indicator__link.active::before {
  width: 12px;
  height: 12px;
  background: var(--interactive);
  border-color: var(--interactive);
}
.progress-indicator__link:hover::before {
  background: var(--interactive);
  border-color: var(--interactive);
}
.progress-indicator__label {
  font-size: .75rem;
  color: var(--text-02);
  margin-left: 1rem;
  opacity: 0;
  transition: opacity 110ms var(--ease);
  white-space: nowrap;
}
.progress-indicator__link:hover .progress-indicator__label,
.progress-indicator__link.active .progress-indicator__label {
  opacity: 1;
}

:root {
  --white:         #ffffff;
  --cool-01:       #f4f4f4;
  --cool-02:       #e0e0e0;
  --cool-03:       #c6c6c6;
  --text-01:       #161616;
  --text-02:       #525252;
  --text-03:       #8d8d8d;
  --text-inverse:  #ffffff;
  --interactive:   #0f62fe;
  --interactive-h: #0353e9;
  --link:          #0f62fe;
  --link-visited:  #8a3ffc;
  --tag-bg:        #e0e0e0;
  --tag-text:      #393939;
  --border:        #e0e0e0;
  --border-strong: #8d8d8d;
  --focus:         #0f62fe;
  --overlay:       rgba(0,0,0,0.5);
  --sans:          'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --serif:         'IBM Plex Serif', Georgia, serif;
  --header-h:      48px;
  --max-w:         1584px;
  --ease:          cubic-bezier(0.2, 0, 0.38, 0.9);
  
  /* Tag colors - IBM Carbon palette */
  --tag-blue:      #0f62fe;
  --tag-blue-bg:   #d0e2ff;
  --tag-purple:    #8a3ffc;
  --tag-purple-bg: #e8daff;
  --tag-cyan:      #1192e8;
  --tag-cyan-bg:   #bae6ff;
  --tag-teal:      #009d9a;
  --tag-teal-bg:   #9ef0f0;
  --tag-green:     #198038;
  --tag-green-bg:  #a7f0ba;
  --tag-magenta:   #d02670;
  --tag-magenta-bg:#ffd6e8;
  --tag-red:       #da1e28;
  --tag-red-bg:    #ffd7d9;
  --tag-orange:    #eb6200;
  --tag-orange-bg: #ffd9be;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scroll-behavior: smooth; }
body { background: var(--white); color: var(--text-01); font-family: var(--sans); font-size: 1rem; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: var(--sans); cursor: pointer; border: none; background: none; }

/* ── UTILITY ── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* ── TYPE SCALE ── */
.label-01  { font-size: .75rem;   font-weight: 400; line-height: 1.33; letter-spacing: .32px; }
.label-02  { font-size: .875rem;  font-weight: 400; line-height: 1.28; letter-spacing: .16px; }
.body-01   { font-size: 1rem;     font-weight: 400; line-height: 1.5;  letter-spacing: 0; }
.body-02   { font-size: 1rem;     font-weight: 400; line-height: 1.5;  letter-spacing: .16px; }
.heading-01{ font-size: .875rem;  font-weight: 600; line-height: 1.28; letter-spacing: .16px; }
.heading-02{ font-size: 1rem;     font-weight: 600; line-height: 1.5;  letter-spacing: 0; }
.heading-03{ font-size: 1.25rem;  font-weight: 400; line-height: 1.4;  letter-spacing: 0; }
.heading-04{ font-size: 1.75rem;  font-weight: 400; line-height: 1.28; letter-spacing: 0; }
.heading-05{ font-size: 2rem;     font-weight: 300; line-height: 1.25; letter-spacing: 0; }
.heading-06{ font-size: 2.625rem; font-weight: 300; line-height: 1.19; letter-spacing: 0; }
.heading-07{ font-size: 3.375rem; font-weight: 300; line-height: 1.18; letter-spacing: 0; }
.fluid-heading-05 { font-size: clamp(1.5rem, 3.5vw, 2.625rem); font-weight: 300; line-height: 1.19; }
.fluid-heading-06 { font-size: clamp(2rem, 5vw, 3.75rem);      font-weight: 300; line-height: 1.16; }

/* ── HEADER ── */
.cds-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 8000;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.cds-header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
}
.cds-header__name {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 1rem;
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .1px;
  color: var(--text-01);
  border-right: 1px solid var(--border);
  white-space: nowrap;
  flex-shrink: 0;
}
.cds-header__name em { font-weight: 300; font-style: normal; }
.cds-header__nav {
  display: flex;
  align-items: center;
  height: 100%;
  flex: 1;
  position: relative;
}
.cds-header__nav > a,
.cds-header__nav-item {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 1rem;
  font-size: .875rem;
  font-weight: 400;
  color: var(--text-02);
  border-bottom: 2px solid transparent;
  transition: color 110ms var(--ease), border-color 110ms var(--ease), background 110ms var(--ease);
  white-space: nowrap;
  position: relative;
}
.cds-header__nav > a:hover,
.cds-header__nav-item:hover {
  color: var(--text-01);
  background: var(--cool-01);
}
.cds-header__nav > a.active,
.cds-header__nav-item.active {
  color: var(--text-01);
  border-bottom-color: var(--interactive);
}
.cds-header__nav-item {
  cursor: pointer;
}
.cds-header__nav-item::after {
  content: '▼';
  font-size: .625rem;
  margin-left: .375rem;
  transition: transform 110ms var(--ease);
}
.cds-header__nav-item.open::after {
  transform: rotate(180deg);
}
.cds-header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 110ms var(--ease), transform 110ms var(--ease), visibility 110ms var(--ease);
  z-index: 9000;
}
.cds-header__nav-item.open .cds-header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.cds-header__dropdown a {
  display: block;
  padding: .75rem 1rem;
  font-size: .875rem;
  color: var(--text-02);
  border-bottom: 1px solid var(--border);
  transition: background 110ms var(--ease), color 110ms var(--ease);
}
.cds-header__dropdown a:last-child {
  border-bottom: none;
}
.cds-header__dropdown a:hover {
  background: var(--cool-01);
  color: var(--text-01);
}
.cds-header__actions {
  display: flex;
  align-items: center;
  height: 100%;
  margin-left: auto;
  border-left: 1px solid var(--border);
}
.cds-header__btn {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 1rem;
  font-size: .875rem;
  color: var(--text-02);
  border-left: 1px solid var(--border);
  transition: background 110ms var(--ease), color 110ms var(--ease);
  white-space: nowrap;
}
.cds-header__btn:hover {
  background: var(--cool-01);
  color: var(--text-01);
}
.cds-header__btn--primary {
  background: var(--interactive);
  color: var(--text-inverse);
}
.cds-header__btn--primary:hover { background: var(--interactive-h); }

/* ── PAGE BODY ── */
.page-body { padding-top: var(--header-h); }

/* ── HERO CAROUSEL ── */
.hero-carousel {
  position: relative;
  width: 100%;
  height: clamp(400px, 55vh, 640px);
  overflow: hidden;
  background: var(--text-01);
}
.hero-carousel__track {
  position: relative;
  width: 100%;
  height: 100%;
}
.hero-carousel__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 800ms var(--ease), visibility 800ms var(--ease);
}
.hero-carousel__slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}
.hero-carousel__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}
.hero-carousel__img-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a2a4a 0%, #0d1a35 60%, #1c1c1c 100%);
}
.hero-carousel__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.75) 0%,
    rgba(0,0,0,0.35) 50%,
    rgba(0,0,0,0.1) 100%
  );
}
.hero-carousel__content {
  position: absolute;
  top: 40%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  padding: 2.5rem 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.hero-carousel__eyebrow {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: rgba(255,255,255,0.7);
  margin-bottom: .75rem;
  text-transform: uppercase;
}
.hero-carousel__title {
  font-size: clamp(1.75rem, 4.5vw, 3.75rem);
  font-weight: 300;
  line-height: 1.13;
  letter-spacing: -.01em;
  color: var(--text-inverse);
  margin-bottom: 1.25rem;
  max-width: 720px;
}
.hero-carousel__title strong { font-weight: 600; }
.hero-carousel__body {
  font-size: clamp(.9375rem, 1.2vw, 1.125rem);
  font-weight: 300;
  line-height: 1.6;
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin-bottom: 1.75rem;
}
.hero-carousel__actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* Carousel controls */
.hero-carousel__prev,
.hero-carousel__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--text-inverse);
  font-size: 1.5rem;
  cursor: pointer;
  transition: background 110ms var(--ease), border-color 110ms var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-carousel__prev:hover,
.hero-carousel__next:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.5);
}
.hero-carousel__prev { left: 1rem; }
.hero-carousel__next { right: 1rem; }

/* Carousel indicators */
.hero-carousel__indicators {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: .5rem;
}
.hero-carousel__indicators button {
  width: 32px;
  height: 3px;
  background: rgba(255,255,255,0.3);
  border: none;
  cursor: pointer;
  transition: background 200ms var(--ease);
}
.hero-carousel__indicators button.active {
  background: rgba(255,255,255,0.9);
}
.hero-carousel__indicators button:hover {
  background: rgba(255,255,255,0.6);
}
/* ── HERO SECTION (Single image, no carousel) ── */
.hero-section {
  position: relative;
  width: 100%;
  height: clamp(300px, 40vh, 480px);
  overflow: hidden;
  background: var(--text-01);
}
.hero-section__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}
.hero-section__img-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a2a4a 0%, #0d1a35 60%, #1c1c1c 100%);
}
.hero-section__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.75) 0%,
    rgba(0,0,0,0.35) 50%,
    rgba(0,0,0,0.1) 100%
  );
}
.hero-section__content {
  position: absolute;
  top: 40%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  padding: 2.5rem 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.hero-section__eyebrow {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: rgba(255,255,255,0.7);
  margin-bottom: .75rem;
  text-transform: uppercase;
}
.hero-section__title {
  font-size: clamp(1.75rem, 4.5vw, 3.75rem);
  font-weight: 300;
  line-height: 1.13;
  letter-spacing: -.01em;
  color: var(--text-inverse);
  margin-bottom: 1.25rem;
  max-width: 720px;
}
.hero-section__title strong { font-weight: 600; }
.hero-section__body {
  font-size: clamp(.9375rem, 1.2vw, 1.125rem);
  font-weight: 300;
  line-height: 1.6;
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin-bottom: 1.75rem;
}
.hero-section__actions { display: flex; gap: .5rem; flex-wrap: wrap; }


/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  height: 48px;
  padding: 0 4rem 0 1rem;
  font-family: var(--sans);
  font-size: .875rem;
  font-weight: 400;
  letter-spacing: .16px;
  border: none;
  cursor: pointer;
  transition: background 110ms var(--ease);
  position: relative;
  white-space: nowrap;
  text-decoration: none;
}
.btn::after {
  content: '→';
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  transition: transform 110ms var(--ease);
}
.btn:hover::after { transform: translateY(-50%) translateX(3px); }
.btn--primary   { background: var(--interactive); color: var(--text-inverse); }
.btn--primary:hover { background: var(--interactive-h); }
.btn--secondary { background: #393939; color: var(--text-inverse); }
.btn--secondary:hover { background: #474747; }
.btn--ghost     { background: transparent; color: var(--text-inverse); border: 1px solid rgba(255,255,255,0.5); }
.btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.8); }
.btn--ghost-dark { background: transparent; color: var(--text-01); border: 1px solid var(--text-01); padding-right: 4rem; }
.btn--ghost-dark:hover { background: var(--cool-01); }

/* ── SECTION TEASER (IBM Quantum Hardware style) ── */
/* Full-width image with text overlay */
.section-teaser {
  position: relative;
  width: 100%;
  height: clamp(280px, 38vw, 560px);
  overflow: hidden;
  background: var(--text-01);
  border-top: 1px solid var(--border);
}
.section-teaser__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  transition: transform 500ms var(--ease);
}
.section-teaser:hover .section-teaser__img { transform: scale(1.02); }
.section-teaser__img-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a2a4a 0%, #0d1a35 100%);
}
.section-teaser__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0) 100%);
}
.section-teaser__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2.5rem 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.section-teaser__label {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: .75rem;
}

/* ── SECTION CONTENT (20% sidebar + 80% cards) ── */
.section-content {
  width: 100%;
  border-bottom: 1px solid var(--border);
}
.section-content--white {
  background: var(--white);
}
.section-content--grey {
  background: var(--cool-01);
}
.section-content__inner {
  display: grid;
  grid-template-columns: 20% 80%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 0;
  gap: 2rem;
}
.section-content__sidebar {
  padding: 0 1rem 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.section-content__title {
  font-size: 1.75rem;
  font-weight: 300;
  line-height: 1.25;
  color: var(--text-01);
  letter-spacing: -.01em;
}
.section-content__link {
  font-size: .875rem;
  font-weight: 400;
  color: var(--link);
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  transition: gap 110ms var(--ease);
  text-decoration: none;
}
.section-content__link:hover {
  gap: .5rem;
  text-decoration: underline;
}
.section-content__main {
  padding: 0 1rem 0 0;
}
.section-content__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

/* ── UPDATED ARTICLE CARDS (smaller, refined) ── */
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  transition: border-color 110ms var(--ease), box-shadow 110ms var(--ease);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  height: 100%;
}
.article-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.article-card__image {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 50%; /* 2:1 aspect ratio */
  overflow: hidden;
  background: var(--cool-02);
  flex-shrink: 0;
}
.article-card__image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 400ms var(--ease);
}
.article-card:hover .article-card__image img {
  transform: scale(1.04);
}
.article-card__image-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--cool-02) 0%, var(--cool-03) 100%);
}

.article-card__body {
  padding: .875rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card__type {
  font-size: .625rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: var(--text-03);
  margin-bottom: .375rem;
  text-transform: uppercase;
}
.article-card__title {
  font-size: .9375rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--text-01);
  margin-bottom: .5rem;
  flex: 1;
}
.article-card__desc {
  font-size: .8125rem;
  font-weight: 300;
  line-height: 1.45;
  color: var(--text-02);
  margin-bottom: .75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card__meta {
  font-size: .6875rem;
  color: var(--text-03);
  display: flex;
  align-items: center;
  gap: .375rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: .625rem;
  border-top: 1px solid var(--border);
}
.article-card__tag {
  display: inline-flex;
  align-items: center;
  height: 1.5rem;
  padding: 0 .5rem;
  font-size: .6875rem;
  font-weight: 400;
  letter-spacing: .16px;
  border-radius: 12px;
  transition: all 110ms var(--ease);
  text-decoration: none;
  background: var(--tag-cyan-bg);
  color: var(--tag-cyan);
}
.article-card__tag:hover {
  background: var(--tag-cyan);
  color: var(--white);
}

/* Tag color variants - based on data-tag attribute */
.article-card__tag[data-tag="strategy"] {
  background: var(--tag-blue-bg);
  color: var(--tag-blue);
}
.article-card__tag[data-tag="strategy"]:hover {
  background: var(--tag-blue);
  color: var(--white);
}

.article-card__tag[data-tag="risk"] {
  background: var(--tag-red-bg);
  color: var(--tag-red);
}
.article-card__tag[data-tag="risk"]:hover {
  background: var(--tag-red);
  color: var(--white);
}

.article-card__tag[data-tag="model-ops"] {
  background: var(--tag-purple-bg);
  color: var(--tag-purple);
}
.article-card__tag[data-tag="model-ops"]:hover {
  background: var(--tag-purple);
  color: var(--white);
}

.article-card__tag[data-tag="measurement"] {
  background: var(--tag-magenta-bg);
  color: var(--tag-magenta);
}
.article-card__tag[data-tag="measurement"]:hover {
  background: var(--tag-magenta);
  color: var(--white);
}

.article-card__tag[data-tag="financial-services"] {
  background: var(--tag-teal-bg);
  color: var(--tag-teal);
}
.article-card__tag[data-tag="financial-services"]:hover {
  background: var(--tag-teal);
  color: var(--white);
}

/* ── SECTION INTRODUCTION ── */
.section-intro {
  background: var(--white);
  padding: 6rem 0 4rem;
}
.section-intro__inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}
.section-intro__eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.32px;
  text-transform: uppercase;
  color: var(--interactive);
  margin-bottom: 1rem;
}
.section-intro__title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--text-01);
  margin-bottom: 1.5rem;
}
.section-intro__description {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-02);
  margin-bottom: 2rem;
}
.section-intro__content {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-02);
}
.section-intro__content p {
  margin-bottom: 1rem;
}
.section-intro__content h2 {
  font-size: 1.5rem;
  font-weight: 400;
  margin: 2rem 0 1rem;
  color: var(--text-01);
}
.section-intro__content ul,
.section-intro__content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

/* ── SECTION ARTICLES GRID ── */
.section-articles {
  background: var(--cool-01);
  padding: 4rem 0;
}
.section-articles__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.section-articles__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.section-articles__title {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
}
.section-articles__count {
  font-size: 0.875rem;
  color: var(--text-03);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

/* ── LIST PAGE HERO (LEGACY) ── */
.list-hero {
  position: relative;
  width: 100%;
  height: clamp(280px, 35vh, 420px);
  overflow: hidden;
  background: var(--text-01);
}
.list-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.list-hero__img-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a2a4a 0%, #0d1a35 100%);
}
.list-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.3) 0%,
    rgba(0,0,0,0.6) 100%
  );
}
.list-hero__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.list-hero__eyebrow {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: rgba(255,255,255,0.7);
  margin-bottom: .5rem;
  text-transform: uppercase;
}
.list-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.625rem);
  font-weight: 300;
  line-height: 1.19;
  color: var(--text-inverse);
  margin-bottom: .75rem;
  max-width: 720px;
}
.list-hero__title strong { font-weight: 600; }
.list-hero__desc {
  font-size: clamp(.875rem, 1.2vw, 1rem);
  font-weight: 300;
  line-height: 1.6;
  color: rgba(255,255,255,0.8);
  max-width: 560px;
}

/* ── LIST STATS BAR ── */
.list-stats {
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.list-stats__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 1rem;
  display: flex;
  gap: 3rem;
}
.list-stats__item {
  display: flex;
  align-items: baseline;
  gap: .5rem;
}
.list-stats__number {
  font-size: 2rem;
  font-weight: 300;
  line-height: 1;
  color: var(--text-01);
}
.list-stats__label {
  font-size: .875rem;
  font-weight: 400;
  color: var(--text-02);
}

/* ── FEATURED ARTICLE ── */
.list-featured {
  background: var(--cool-01);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0;
}
.list-featured__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.list-featured__label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: var(--text-03);
  margin-bottom: 1.5rem;
}
.list-featured__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color 110ms var(--ease), box-shadow 110ms var(--ease);
}
.list-featured__card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.list-featured__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--cool-02);
}
.list-featured__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease);
}
.list-featured__card:hover .list-featured__image img {
  transform: scale(1.05);
}
.list-featured__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--cool-02) 0%, var(--cool-03) 100%);
}
.list-featured__content {
  padding: 2rem 2rem 2rem 0;
  display: flex;
  flex-direction: column;
}
.list-featured__type {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: var(--text-03);
  margin-bottom: .75rem;
  text-transform: uppercase;
}
.list-featured__title {
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-01);
  margin-bottom: 1rem;
}
.list-featured__desc {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-02);
  margin-bottom: 1.5rem;
  flex: 1;
}
.list-featured__meta {
  font-size: .875rem;
  color: var(--text-03);
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.list-featured__cta {
  font-size: .875rem;
  font-weight: 400;
  color: var(--link);
  display: inline-flex;
  align-items: center;
  transition: gap 110ms var(--ease);
}
.list-featured__card:hover .list-featured__cta {
  text-decoration: underline;
}

/* ── LIST GRID ── */
.list-grid {
  background: var(--white);
  padding: 3rem 0 4rem;
}
.list-grid__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.list-grid__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.list-grid__title {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-01);
}
.list-grid__count {
  font-size: .875rem;
  font-weight: 400;
  color: var(--text-03);
}
.list-grid__cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.article-card__tag[data-tag="roi"] {
  background: var(--tag-green-bg);
  color: var(--tag-green);
}
.article-card__tag[data-tag="roi"]:hover {
  background: var(--tag-green);
  color: var(--white);
}
.section-teaser__heading {
  font-size: clamp(1.375rem, 3vw, 2.625rem);
  font-weight: 300;
  line-height: 1.19;
  color: var(--text-inverse);
  max-width: 560px;
  margin-bottom: 1rem;
}
.section-teaser__heading strong { font-weight: 600; }
.section-teaser__desc {
  font-size: .9375rem;
  font-weight: 300;
  line-height: 1.6;
  color: rgba(255,255,255,0.75);
  max-width: 480px;
  margin-bottom: 1.5rem;
}

/* ── SECTION CONTAINER ── */
.section-block {
  border-bottom: 1px solid var(--border);
}
.section-block--gray { background: var(--cool-01); }

/* ── ARTICLE CARDS GRID ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid--2 { grid-template-columns: repeat(2, 1fr); }

.article-card__body { padding: 1rem; flex: 1; display: flex; flex-direction: column; }
.article-card__type {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .32px;
  color: var(--text-03);
  margin-bottom: .375rem;
}
.article-card__title {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.375;
  color: var(--text-01);
  margin-bottom: .625rem;
  flex: 1;
}
.article-card__desc {
  font-size: .875rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-02);
  margin-bottom: .75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card__meta {
  font-size: .75rem;
  color: var(--text-03);
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
}
.article-card__tag {
  display: inline-flex;
  align-items: center;
  height: 1.25rem;
  padding: 0 .5rem;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: .6875rem;
  font-weight: 400;
  letter-spacing: .32px;
}

/* ── SECTION HEADER ROW ── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.section-header__title {
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text-01);
}
.section-header__link {
  font-size: .875rem;
  font-weight: 400;
  color: var(--link);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: .25rem;
  transition: gap 110ms var(--ease);
}
.section-header__link:hover { gap: .5rem; }
.section-header__link::after { content: ' →'; }

/* ── ARTICLE PAGE ── */
/* Breadcrumb */
.breadcrumb {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
}
.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: .5rem;
  list-style: none;
  flex-wrap: wrap;
}
.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  color: var(--text-03);
}
.breadcrumb__item a { color: var(--link); }
.breadcrumb__item a:hover { text-decoration: underline; }
.breadcrumb__item::before {
  content: '/';
  color: var(--text-03);
}
.breadcrumb__item:first-child::before { display: none; }

/* Article header */
.article-header {
  padding: 2rem 1rem 0;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.article-header__type {
  font-size: .75rem;
  letter-spacing: .32px;
  color: var(--text-03);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.article-header__title {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.13;
  color: var(--text-01);
  max-width: 900px;
  margin-bottom: 1rem;
}
.article-header__title strong { font-weight: 600; }
.article-header__deck {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-02);
  max-width: 760px;
  margin-bottom: 2rem;
}

/* Article hero image */
.article-hero {
  width: 100%;
  max-height: 520px;
  overflow: hidden;
  margin-bottom: 0;
  display: flex;
  justify-content: center;
}
.article-hero img {
  max-width: var(--max-w);
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  display: block;
  padding: 0 1rem;
}
.article-hero-placeholder {
  max-width: var(--max-w);
  width: 100%;
  height: 360px;
  background: linear-gradient(135deg, #d4dce8 0%, #c0ccd8 100%);
}

/* Article layout: left sidebar + content + right sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 220px 1fr 280px;
  max-width: var(--max-w);
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  gap: 2rem;
}
.article-sidebar {
  padding: 2rem 0;
  position: sticky;
  top: var(--header-h);
  align-self: start;
  height: fit-content;
}
.article-sidebar--left {
  padding-left: 1rem;
  padding-right: 1rem;
  border-right: 1px solid var(--border);
}
.article-sidebar--right {
  padding-right: 1rem;
}
.article-sidebar__section {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.article-sidebar__section:last-child { border-bottom: none; margin-bottom: 0; }
.article-sidebar__label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  color: var(--text-03);
  text-transform: uppercase;
  margin-bottom: .625rem;
  display: block;
}
.article-sidebar__value {
  font-size: .875rem;
  font-weight: 400;
  color: var(--text-01);
  line-height: 1.5;
}
.article-sidebar__value + .article-sidebar__value { margin-top: .25rem; }
.article-sidebar__author-link {
  color: var(--link);
  text-decoration: none;
  transition: color 110ms var(--ease);
}
.article-sidebar__author-link:hover {
  color: var(--link-hover);
  text-decoration: underline;
}
.article-sidebar__topics { display: flex; flex-direction: column; gap: .375rem; }
.article-sidebar__topic {
  display: inline-flex;
  width: fit-content;
  height: 1.5rem;
  align-items: center;
  padding: 0 .5rem;
  background: var(--tag-bg);
  color: var(--link);
  font-size: .6875rem;
  font-weight: 400;
  letter-spacing: .16px;
  border-radius: 12px;
  transition: all 110ms var(--ease);
  text-decoration: none;
}
.article-sidebar__topic:hover { background: var(--cool-02); }

/* Colorful tag styling for sidebar topics */
.article-sidebar__topic[data-tag="strategy"] {
  background: var(--tag-blue-bg);
  color: var(--tag-blue);
}
.article-sidebar__topic[data-tag="measurement"] {
  background: var(--tag-purple-bg);
  color: var(--tag-purple);
}
.article-sidebar__topic[data-tag="roi"] {
  background: var(--tag-teal-bg);
  color: var(--tag-teal);
}
.article-sidebar__topic[data-tag="risk"] {
  background: var(--tag-red-bg);
  color: var(--tag-red);
}
.article-sidebar__topic[data-tag="model-ops"] {
  background: var(--tag-green-bg);
  color: var(--tag-green);
}
.article-sidebar__topic[data-tag="financial-services"] {
  background: var(--tag-magenta-bg);
  color: var(--tag-magenta);
}
.article-sidebar__topic[data-tag="strategy"]:hover {
  background: var(--tag-blue);
  color: white;
}
.article-sidebar__topic[data-tag="measurement"]:hover {
  background: var(--tag-purple);
  color: white;
}
.article-sidebar__topic[data-tag="roi"]:hover {
  background: var(--tag-teal);
  color: white;
}
.article-sidebar__topic[data-tag="risk"]:hover {
  background: var(--tag-red);
  color: white;
}
.article-sidebar__topic[data-tag="model-ops"]:hover {
  background: var(--tag-green);
  color: white;
}
.article-sidebar__topic[data-tag="financial-services"]:hover {
  background: var(--tag-magenta);
  color: white;
}

/* Article body */
.article-body { padding: 2rem 3rem 4rem 2rem; }
.article-summary {
  background: var(--cool-01);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  border-left: 3px solid var(--interactive);
}
.article-summary__label {
  font-size: .875rem;

/* ── ARTICLE SOCIAL SHARING ── */
.article-share {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.article-share__label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: var(--text-03);
  margin-bottom: 1rem;
  display: block;
}
.article-share__buttons {
  display: flex;
  gap: .5rem;
}
.article-share__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-02);
  transition: all 110ms var(--ease);
  text-decoration: none;
}
.article-share__btn:hover {
  background: var(--cool-01);
  border-color: var(--border-strong);
  color: var(--text-01);
}
.article-share__btn svg {
  width: 20px;
  height: 20px;
}

/* ── ARTICLE SUMMARY BOX (right sidebar) ── */
.article-summary-box {
  background: var(--cool-01);
  padding: 1.5rem;
  border-left: 3px solid var(--interactive);
}
.article-summary-box__label {
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-01);
  margin-bottom: 1rem;
}
.article-summary-box__list {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  list-style: disc;
}
.article-summary-box__list li {
  font-size: .875rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-01);
}
  font-weight: 600;
  color: var(--text-01);
  margin-bottom: .625rem;
}
.article-summary ul {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .375rem;
}
.article-summary li {
  font-size: .875rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-02);
}
.article-prose {
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-01);
}
.article-prose p { margin-bottom: 1.375em; }
.article-prose h2 {
  font-family: var(--sans);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text-01);
  margin: 2rem 0 1rem;
}
.article-prose h3 {
  font-family: var(--sans);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-01);
  margin: 2rem 0 .75rem;
}
.article-prose blockquote {
  font-family: var(--sans);
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.45;
  color: var(--text-01);
  border-left: 3px solid var(--interactive);
  padding: .75rem 0 .75rem 1.5rem;
  margin: 2rem 0;
  font-style: italic;
}
.article-prose ul, .article-prose ol {
  padding-left: 1.5em;
  margin-bottom: 1.375em;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
}
.article-prose li { margin-bottom: .375em; line-height: 1.6; }
.article-prose strong { font-weight: 600; font-family: var(--sans); }
.article-prose a { color: var(--link); text-decoration: underline; }
.article-prose a:hover { text-decoration: none; }
.article-prose img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2rem auto;
  border: 1px solid var(--border);
}
.article-prose em {
  display: block;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-03);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ── ARTICLE FILTERS ── */
.article-filters {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-bottom: 2rem;
}
.article-filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.article-filter-label {
  font-size: 0.875rem;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--text-02);
  white-space: nowrap;
}
.article-filter-select {
  height: 40px;
  min-width: 180px;
  padding: 0 2.5rem 0 1rem;
  font-size: 0.875rem;
  font-family: var(--sans);
  color: var(--text-01);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  transition: all 110ms var(--ease);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M8 11L4 7h8l-4 4z' fill='%23161616'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px;
}
.article-filter-select:hover {
  background-color: var(--cool-01);
  border-color: var(--border-strong);
}
.article-filter-select:focus {
  outline: 2px solid var(--interactive);
  outline-offset: 2px;
  border-color: var(--interactive);
}

/* ── ARTICLE LOAD MORE ── */
.article-load-more {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
  padding-top: 2rem;
}
.article-load-more .btn {
  padding-right: 1.5rem;
}
.article-load-more .btn::after {
  display: none;
}
.article-card-wrapper {
  transition: opacity 0.3s ease;
  display: flex;
  height: 100%;
}

/* ── ERROR PAGE ── */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
}
.error-page__content {
  max-width: 600px;
  text-align: center;
}
.error-page__code {
  font-size: 6rem;
  font-weight: 300;
  line-height: 1;
  color: var(--text-03);
  margin-bottom: 1rem;
}
.error-page__title {
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-01);
  margin-bottom: 1rem;
}
.error-page__message {
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-02);
  margin-bottom: 2rem;
}
.error-page__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}
.error-page__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 1.5rem;
  font-size: 0.875rem;
  font-weight: 400;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-01);
  transition: all 110ms var(--ease);
}
.error-page__btn:hover {
  background: var(--cool-01);
  border-color: var(--border-strong);
}
.error-page__btn--primary {
  background: var(--interactive);
  color: var(--white);
  border-color: var(--interactive);
}
.error-page__btn--primary:hover {
  background: var(--link-hover);
  border-color: var(--link-hover);
}
.error-page__suggestions {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.error-page__suggestions h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-01);
  margin-bottom: 1rem;
}
.error-page__suggestions ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.error-page__suggestions li a {
  color: var(--link);
  text-decoration: none;
  font-size: 0.875rem;
}
.error-page__suggestions li a:hover {
  text-decoration: underline;
}

/* ── ABOUT PAGE LAYOUT ── */
.about-layout {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 0;
}
/* ── OVERVIEW SECTION ── */
.overview-section {
  background: var(--white);
  padding: 4rem 0;
}
.overview-section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.overview-section__title {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
  margin-bottom: 1.5rem;
}
.overview-section__description {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-02);
  max-width: 900px;
  margin-bottom: 3rem;
}
.overview-section__features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}
.overview-feature {
  padding: 1.5rem 0;
  border-top: 2px solid var(--interactive);
}
.overview-feature__title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-01);
  margin-bottom: 0.75rem;
}
.overview-feature__description {
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-02);
}

.about-layout .article-prose {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--text-02);
}
.about-layout .article-prose p {
  margin-bottom: 1.5rem;
}
.about-layout .article-prose h2 {
  font-family: var(--sans);
  font-size: 1.75rem;
  font-weight: 300;
  line-height: 1.3;
  color: var(--text-01);
  margin: 3rem 0 1.5rem;
}
.about-layout .article-prose h3 {
  font-family: var(--sans);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text-01);
  margin: 2rem 0 1rem;
}
.about-layout .article-prose ul,
.about-layout .article-prose ol {
  padding-left: 1.5em;
  margin-bottom: 1.5rem;
}
.about-layout .article-prose li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}
.about-layout .article-prose strong {
  font-weight: 600;
  color: var(--text-01);
}
.about-layout .article-prose a {
  color: var(--link);
  text-decoration: underline;
}
.about-layout .article-prose a:hover {
  text-decoration: none;
}

/* ── RELATED ARTICLES SECTION ── */
.related-articles {
  margin-top: 4rem;
  padding: 1rem 0;
  background: var(--cool-01);
}
.related-articles__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem 2rem;
}
.related-articles .section-header {
  margin-bottom: 1rem;
  padding-left: 0;
  border-bottom: none;
}

/* ── FEATURED SECTION (Grey background) ── */
.featured-section {
  background: var(--cool-01);
  padding: 4rem 0;
}
.featured-section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.featured-section__subtitle {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: var(--text-03);
  margin-bottom: 1rem;
}
.featured-section__title {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-01);
}
.featured-section__description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-02);
  margin-bottom: 2rem;
}
.featured-section__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--interactive);
  text-decoration: none;
  transition: color 110ms var(--ease);
}
.featured-section__cta:hover {
  color: var(--interactive-h);
}
.featured-section__cta svg {
  transition: transform 110ms var(--ease);
}
.featured-section__cta:hover svg {
  transform: translateX(4px);
}
.featured-section__image {
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.featured-section__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── CAROUSEL SECTION (White background) ── */
.carousel-section {
  background: var(--white);
  padding: 4rem 0;
}
.carousel-section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.carousel-section__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
  align-items: start;
}
.carousel-section__title {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
}
.carousel-section__description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-02);
}
/* ── ACCORDION CARDS ── */
.accordion-cards {
  display: flex;
  gap: 1rem;
  height: 500px;
}
.accordion-card {
  flex: 0 0 20%;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: flex 400ms var(--ease);
  border-radius: 2px;
}
.accordion-card.active {
  flex: 0 0 40%;
}
.accordion-card__image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.accordion-card__image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.7));
  z-index: 1;
}
.accordion-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.accordion-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  z-index: 2;
  color: var(--white);
}
.accordion-card__title {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--white);
  transition: font-size 300ms var(--ease);
}
.accordion-card.active .accordion-card__title {
  font-size: 2rem;
}
.accordion-card__description {
  font-size: .875rem;
  line-height: 1.5;
  color: var(--white);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 300ms var(--ease), max-height 300ms var(--ease);
  margin-bottom: 1rem;
}
.accordion-card.active .accordion-card__description {
  opacity: 1;
  max-height: 200px;
}
.accordion-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  opacity: 0;
  transition: opacity 300ms var(--ease);
  pointer-events: none;
}
.accordion-card.active .accordion-card__link {
  opacity: 1;
  pointer-events: auto;
}
.accordion-card__link:hover {
  text-decoration: underline;
}
.accordion-card__link svg {
  transition: transform 110ms var(--ease);
}
.accordion-card__link:hover svg {
  transform: translateX(4px);
}

/* ── PROCESSOR SECTION (Grey cards with 3 items) ── */
.processor-section {
  background: var(--white);
  padding: 4rem 0;
}
.processor-section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem;
}
.processor-section__header {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  margin-bottom: 3rem;
  align-items: start;
}
.processor-section__title {
  font-size: 3rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
}
.processor-section__description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-02);
  padding-top: 0.5rem;
  padding-left: 3rem;
}
.processor-cards {
  display: flex;
  gap: 1rem;
  height: 550px;
}
.processor-card {
  flex: 0 0 calc(25% - 0.667rem);
  position: relative;
  background: var(--cool-01);
  cursor: pointer;
  transition: flex 400ms var(--ease);
  border-radius: 2px;
  overflow: hidden;
}
.processor-card.active {
  flex: 0 0 calc(50% - 0.667rem);
}

/* Header - changes position based on state */
.processor-card__header {
  position: absolute;
  top: 2rem;
  left: 2rem;
  right: 2rem;
  z-index: 3;
  transition: width 300ms var(--ease);
}
.processor-card.active .processor-card__header {
  width: 40%;
  right: auto;
}
.processor-card__category {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: var(--white);
  background: var(--interactive);
  padding: 0.25rem 0.75rem;
  margin-bottom: 0.75rem;
  border-radius: 2px;
}
.processor-card__title {
  font-size: 2rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
  margin-bottom: 0.25rem;
}
.processor-card__subtitle {
  font-size: .875rem;
  color: var(--text-02);
  line-height: 1.4;
  display: none;
}

/* Images - align with details text */
.processor-card__image {
  position: absolute;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem;
  z-index: 1;
  transition: all 300ms var(--ease);
}
.processor-card__image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
/* Compressed image - centered */
.processor-card__image--compressed {
  top: 10rem;
  left: 0;
  right: 0;
  bottom: 6rem;
  opacity: 1;
}
.processor-card.active .processor-card__image--compressed {
  opacity: 0;
}
/* Expanded image - right side, aligned with details */
.processor-card__image--expanded {
  top: 10rem;
  right: 0;
  width: 50%;
  height: auto;
  bottom: auto;
  opacity: 0;
}
.processor-card.active .processor-card__image--expanded {
  opacity: 1;
}

/* Details - only visible when active, on left side below header */
.processor-card__details {
  position: absolute;
  top: 10rem;
  left: 2rem;
  width: 40%;
  z-index: 3;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 300ms var(--ease), transform 300ms var(--ease);
}
.processor-card.active .processor-card__details {
  opacity: 1;
  transform: translateY(0);
}
.processor-card__description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-02);
  margin-bottom: 1.5rem;
}

/* Metrics - stacked vertically on left */
.processor-card__metrics {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.processor-metric {
  text-align: left;
}
.processor-metric__value {
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text-01);
  margin-bottom: 0.25rem;
}
.processor-metric__label {
  font-size: .75rem;
  color: var(--text-03);
  text-transform: uppercase;
  letter-spacing: .32px;
}

/* Button - outline style, only visible when expanded */
.processor-card__button {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1rem;
  font-size: .875rem;
  font-weight: 400;
  letter-spacing: .16px;
  color: var(--interactive);
  background: transparent;
  border: 1px solid var(--interactive);
  text-decoration: none;
  transition: all 110ms var(--ease);
  z-index: 4;
  opacity: 0;
  pointer-events: none;
}
.processor-card.active .processor-card__button {
  opacity: 1;
  pointer-events: auto;
}
.processor-card__button:hover {
  background: var(--interactive);
  color: var(--white);
}
.processor-card__button svg {
  transition: transform 110ms var(--ease);
}
.processor-card__button:hover svg {
  transform: translateX(4px);
}

/* ── LOAD MORE BUTTON ── */
.load-more-container {
  text-align: center;
  margin-top: 2rem;
  padding-bottom: 1rem;
  position: relative;
  z-index: 10;
  clear: both;
}
.load-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1rem;
  font-size: .875rem;
  font-weight: 400;
  letter-spacing: .16px;
  color: var(--text-inverse);
  background: var(--interactive);
  border: none;
  cursor: pointer;
  transition: background 110ms var(--ease);
  position: relative;
  z-index: 10;
}
.load-more-btn:hover {
  background: var(--interactive-h);
}
.load-more-btn:active {
  background: var(--interactive-h);
}
.load-more-btn:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ── FOOTER ── */
.site-footer {
  background: var(--text-01);
  color: var(--text-inverse);
}
.footer-main {
  display: grid;
  grid-template-columns: 1fr repeat(3, auto);
  gap: 3rem;
  padding: 3rem 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
  border-bottom: 1px solid #393939;
}
.footer-brand { max-width: 280px; }
.footer-brand__name {
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .1px;
  margin-bottom: .75rem;
}
.footer-brand__desc {
  font-size: .875rem;
  font-weight: 300;
  line-height: 1.6;
  color: #c6c6c6;
}
.footer-col__title {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .32px;
  text-transform: uppercase;
  color: #c6c6c6;
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: .875rem;
  font-weight: 300;
  color: #c6c6c6;
  margin-bottom: .625rem;
  transition: color 110ms var(--ease);
}
.footer-col a:hover { color: var(--text-inverse); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  max-width: var(--max-w);
  margin: 0 auto;
  font-size: .75rem;
  color: #6f6f6f;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-bottom a { color: #6f6f6f; transition: color 110ms var(--ease); }
.footer-bottom a:hover { color: #c6c6c6; }

/* ── RESPONSIVE ── */
@media (max-width: 1312px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
  .section-content__grid { grid-template-columns: repeat(3, 1fr); }
  .list-grid__cards { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1056px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 180px 1fr 240px; gap: 1.5rem; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .section-content__inner { grid-template-columns: 25% 75%; }
  .section-content__grid { grid-template-columns: repeat(2, 1fr); }
  .list-grid__cards { grid-template-columns: repeat(2, 1fr); }
  .list-featured__card { grid-template-columns: 1fr; }
  .list-featured__content { padding: 2rem; }
}
@media (max-width: 768px) {
  .cds-header__nav a:not(.always) { display: none; }
  .cards-grid { grid-template-columns: 1fr; border-left: none; }
  .article-layout { grid-template-columns: 1fr; gap: 0; }
  .article-sidebar { position: static; border-right: none; border-bottom: 1px solid var(--border); padding: 1.5rem 1rem; }
  .article-sidebar--right { order: -1; border-bottom: 1px solid var(--border); }
  .article-body { padding: 1.5rem 1rem 3rem; }
  .section-teaser { height: clamp(240px, 55vw, 380px); }
  .footer-main { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  
  /* New section layout responsive */
  .section-content__inner {
    grid-template-columns: 1fr;
    padding: 2rem 0;
    gap: 1.5rem;
  }
  .section-content__sidebar {
    padding: 0 1rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
  }
  .section-content__main {
    padding: 0 1rem;
  }
  .section-content__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  /* Hero carousel responsive */
  .hero-carousel {
    height: clamp(320px, 50vh, 480px);
  }
  .hero-carousel__prev,
  .hero-carousel__next {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }
  .hero-carousel__prev { left: .5rem; }
  .hero-carousel__next { right: .5rem; }
  
  /* List page responsive */
  .list-grid__cards {
    grid-template-columns: 1fr;
  }
  .list-hero {
    height: clamp(240px, 40vh, 360px);
  }
  .list-stats__inner {
    gap: 2rem;
  }
  .list-featured {
    padding: 2rem 0;
  }
  .list-featured__image {
    aspect-ratio: 16/9;
  }
}
@media (max-width: 480px) {
  .hero-carousel__content { padding: 1.5rem 1rem; }
  .section-header { padding: 1rem; }
  .breadcrumb { padding: .75rem 1rem; }
  .article-header { padding: 1.5rem 1rem 0; }
  .section-content__inner { padding: 1.5rem 0; }
  .hero-carousel__indicators {
    bottom: 1rem;
  }
  .hero-carousel__indicators button {
    width: 24px;
  }
}