/* ═══════════════════════════════════════════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  --c-primary:       #7C3AED;
  --c-primary-dark:  #5B21B6;
  --c-primary-light: #EDE9FE;
  --c-primary-xlt:   #F5F3FF;
  --c-secondary:     #DB2777;
  --c-secondary-lt:  #FCE7F3;
  --c-accent:        #0EA5E9;
  --c-accent-lt:     #E0F2FE;
  --c-green:         #059669;
  --c-green-lt:      #D1FAE5;

  --c-bg:            #FFFFFF;
  --c-bg-alt:        #F8FAFC;
  --c-bg-header:     #FFFFFF;
  --c-text:          #1E293B;
  --c-text-md:       #475569;
  --c-text-sm:       #64748B;
  --c-border:        #E2E8F0;
  --c-border-dark:   #CBD5E1;

  --c-code-bg:       #F8F7FF;
  --c-code-border:   #D4C5F9;

  --header-h:        66px;
  --radius:          8px;
  --radius-lg:       14px;
  --shadow-sm:       0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:          0 4px 16px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.05);
  --shadow-lg:       0 10px 40px rgba(0,0,0,.1), 0 2px 8px rgba(0,0,0,.06);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;

  --max-w: 1440px;
  --gutter: clamp(1rem, 4vw, 3rem);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

img, svg { display: block; max-width: 100%; }

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color .18s ease;
}
a:hover { color: var(--c-primary-dark); }

ul, ol { padding-left: 1.5em; }

p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-bg-header);
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 1px 8px rgba(0,0,0,.06);
  height: var(--header-h);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--c-text);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity .18s;
}
.site-logo:hover { opacity: .85; color: var(--c-text); }

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-line1 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: -.01em;
}
.logo-line2 {
  font-size: .7rem;
  color: var(--c-text-sm);
  font-weight: 500;
  letter-spacing: .01em;
}

/* Main nav */
.main-nav { margin-left: auto; }

.main-nav ul {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .45rem .85rem;
  border-radius: 9999px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--c-text-md);
  text-decoration: none;
  transition: background .18s, color .18s;
  white-space: nowrap;
}
.nav-link:hover {
  background: var(--c-primary-xlt);
  color: var(--c-primary);
}
.nav-link.active {
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
}
.nav-icon { display: flex; align-items: center; color: inherit; }
.nav-icon svg { width: 18px; height: 18px; }

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 7px;
  background: none;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  cursor: pointer;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--c-text-md);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTAINERS
   ═══════════════════════════════════════════════════════════════════════════ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .75rem 1.6rem;
  border-radius: 9999px;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .18s, box-shadow .18s, background .18s, color .18s;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn:active { transform: none; }

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.btn-primary:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); color: #fff; }

.btn-secondary {
  background: transparent;
  color: var(--c-secondary);
  border-color: var(--c-secondary);
}
.btn-secondary:hover { background: var(--c-secondary-lt); color: var(--c-secondary); }

/* ═══════════════════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════════════════ */
.hero {
  background: linear-gradient(135deg, #F5F3FF 0%, #FCE7F3 45%, #E0F2FE 100%);
  overflow: hidden;
  position: relative;
}

.hero-inner-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 2rem;
}

.hero-inner-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 2rem;
}

.hero-content { max-width: 650px; }
.hero-badge {
  display: inline-block;
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .35rem .9rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--c-text);
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--c-text-md);
  line-height: 1.75;
  margin-bottom: 2rem;
  -webkit-text-fill-color: var(--c-text-md);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
}

.hero-graphic {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}
.hero-svg {
  width: 100%;
  max-width: 340px;
  height: auto;
  filter: drop-shadow(0 8px 24px rgba(124,58,237,.12));
}

/* ═══════════════════════════════════════════════════════════════════════════
   ABOUT SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
.about-section {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-text h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1.25rem;
  letter-spacing: -.02em;
}
.about-text p {
  color: var(--c-text-md);
  font-size: .97rem;
  line-height: 1.8;
}
.about-text code {
  background: var(--c-code-bg);
  border: 1px solid var(--c-code-border);
  color: var(--c-primary);
  padding: .1em .4em;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .875em;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.feature-card {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: box-shadow .2s, border-color .2s;
}
.feature-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--c-primary-light);
}
.feature-card h3 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-text);
  margin: .6rem 0 .4rem;
}
.feature-card p {
  font-size: .82rem;
  color: var(--c-text-sm);
  line-height: 1.6;
}
.feature-icon {
  display: flex;
  width: 38px; height: 38px;
  background: var(--c-primary-light);
  color: var(--icon-color, var(--c-primary));
  border-radius: 9px;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════════════════════════
   SECTION CARDS (HOME)
   ═══════════════════════════════════════════════════════════════════════════ */
.sections-overview {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--c-bg-alt);
}

.sections-heading {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  text-align: center;
  color: var(--c-text);
  margin-bottom: 2.5rem;
  letter-spacing: -.02em;
}

.sections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1.5rem;
}

.section-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s, border-color .25s, transform .2s;
}
.section-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--c-primary-light);
}

.section-card-header {
  display: flex;
  align-items: center;
  gap: .85rem;
}
.section-icon {
  display: flex;
  width: 46px; height: 46px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--c-primary-light);
  color: var(--c-primary);
}
.section-card--subgraph-implementation .section-icon {
  background: var(--c-secondary-lt);
  color: var(--c-secondary);
}
.section-icon svg { width: 22px; height: 22px; }

.section-card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -.01em;
}
.section-card-header h3 a {
  color: inherit;
  text-decoration: none;
}
.section-card-header h3 a:hover { color: var(--c-primary); }

.section-description {
  font-size: .88rem;
  color: var(--c-text-md);
  line-height: 1.65;
}

.section-topics {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .3rem;
  flex: 1;
}
.section-topics li a {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .86rem;
  color: var(--c-text-md);
  text-decoration: none;
  padding: .2rem 0;
  border-bottom: 1px solid transparent;
  transition: color .15s;
}
.section-topics li a:hover { color: var(--c-primary); }
.section-topics li a svg { color: var(--c-primary); flex-shrink: 0; opacity: .7; }

.section-cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--c-primary);
  text-decoration: none;
  margin-top: .5rem;
  transition: gap .18s, color .18s;
}
.section-cta:hover { gap: .7rem; color: var(--c-primary-dark); }
.section-card--subgraph-implementation .section-cta { color: var(--c-secondary); }
.section-card--subgraph-implementation .section-cta:hover { color: #a21c5a; }

/* ═══════════════════════════════════════════════════════════════════════════
   BREADCRUMBS
   ═══════════════════════════════════════════════════════════════════════════ */
.breadcrumbs {
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
}
.breadcrumbs-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: .65rem var(--gutter);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .2rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: .82rem;
}
.breadcrumbs li { display: flex; align-items: center; gap: .2rem; }
.breadcrumbs a { color: var(--c-text-sm); text-decoration: none; }
.breadcrumbs a:hover { color: var(--c-primary); }
.crumb-sep { color: var(--c-border-dark); font-size: .9em; }
.crumb-current { color: var(--c-text-md); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════════════
   CONTENT ARTICLE
   ═══════════════════════════════════════════════════════════════════════════ */
.content-article {
  padding: clamp(2rem, 4vw, 3.5rem) 0 clamp(3rem, 5vw, 5rem);
}
.article-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Typography */
.article-inner h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.article-inner h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
  font-weight: 700;
  color: var(--c-text);
  margin: 2.5rem 0 1rem;
  padding-top: .5rem;
  border-bottom: 2px solid var(--c-primary-light);
  padding-bottom: .5rem;
  letter-spacing: -.015em;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.article-inner h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 700;
  color: var(--c-primary-dark);
  margin: 1.75rem 0 .75rem;
  letter-spacing: -.01em;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.article-inner h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 1.4rem 0 .5rem;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.article-inner p {
  font-size: clamp(.93rem, 1.1vw, 1rem);
  color: var(--c-text-md);
  line-height: 1.8;
  margin-bottom: 1.15rem;
}

.article-inner a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: text-decoration-color .15s, color .15s;
}
.article-inner a:hover {
  color: var(--c-primary-dark);
  text-decoration-color: var(--c-primary-dark);
}

/* Lists */
.article-inner ul,
.article-inner ol {
  padding-left: 1.6em;
  margin-bottom: 1.15rem;
}
.article-inner li {
  font-size: .97rem;
  color: var(--c-text-md);
  line-height: 1.75;
  margin-bottom: .35rem;
}
.article-inner li strong { color: var(--c-text); }

/* Inline code */
.article-inner :not(pre) > code {
  background: var(--c-code-bg);
  border: 1px solid var(--c-code-border);
  color: var(--c-primary-dark);
  padding: .12em .45em;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: .875em;
}

/* Heading anchors */
.anchor-icon {
  font-size: .7em;
  color: var(--c-primary);
  opacity: 0;
  margin-left: .4em;
  vertical-align: middle;
  transition: opacity .15s;
}
.article-inner h2:hover .anchor-icon,
.article-inner h3:hover .anchor-icon,
.article-inner h4:hover .anchor-icon { opacity: 1; }

/* Scroll offset for all headings */
.article-inner h1,
.article-inner h2,
.article-inner h3,
.article-inner h4,
.article-inner h5,
.article-inner h6 {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

/* ═══════════════════════════════════════════════════════════════════════════
   CODE BLOCKS
   ═══════════════════════════════════════════════════════════════════════════ */
.article-inner pre,
pre[class*="language-"] {
  background: var(--c-code-bg) !important;
  border: 1px solid var(--c-code-border);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  position: relative;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8), var(--shadow-sm);
  line-height: 1.65;
}

pre code,
pre[class*="language-"] code {
  font-family: var(--font-mono) !important;
  font-size: .87rem !important;
  background: none !important;
  border: none !important;
  padding: 0 !important;
  color: var(--c-text) !important;
}

/* Prism token colors — light purple-tinted theme */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata        { color: #94A3B8; font-style: italic; }
.token.punctuation  { color: #64748B; }
.token.property,
.token.tag,
.token.deleted      { color: #E11D48; }
.token.boolean,
.token.number,
.token.constant,
.token.symbol       { color: #EA580C; }
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted     { color: #059669; }
.token.operator,
.token.entity,
.token.url          { color: #0284C7; }
.token.atrule,
.token.attr-value   { color: #0EA5E9; }
.token.keyword      { color: #7C3AED; font-weight: 600; }
.token.function,
.token.class-name   { color: #6D28D9; }
.token.regex,
.token.important,
.token.variable     { color: #DB2777; }
.token.important,
.token.bold         { font-weight: bold; }
.token.italic       { font-style: italic; }

/* Copy button */
.copy-button {
  position: absolute;
  top: .65rem;
  right: .65rem;
  background: var(--c-bg);
  border: 1px solid var(--c-code-border);
  color: var(--c-text-sm);
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 600;
  padding: .3rem .7rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  z-index: 2;
  letter-spacing: .02em;
}
.copy-button:hover {
  background: var(--c-primary-light);
  border-color: var(--c-primary);
  color: var(--c-primary-dark);
}
.copy-button.copied {
  background: var(--c-green-lt);
  border-color: var(--c-green);
  color: var(--c-green);
}

/* ═══════════════════════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════════════════════ */
.article-inner table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
  margin: 1.5rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-inner .table-wrapper,
.article-inner table {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.article-inner table {
  display: table;
  min-width: 500px;
}

.article-inner th {
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  font-weight: 700;
  text-align: left;
  padding: .75rem 1rem;
  border-bottom: 2px solid var(--c-code-border);
  white-space: nowrap;
}

.article-inner td {
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-md);
  vertical-align: top;
  line-height: 1.55;
}

.article-inner tr:last-child td { border-bottom: none; }
.article-inner tr:nth-child(even) td { background: var(--c-bg-alt); }
.article-inner tr:hover td { background: var(--c-primary-xlt); }

/* Wrap table for mobile scroll */
.article-inner table {
  width: 100%;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FAQ ACCORDIONS
   ═══════════════════════════════════════════════════════════════════════════ */
.faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: .65rem;
  overflow: hidden;
  transition: box-shadow .2s;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item[open] {
  border-color: var(--c-primary-light);
  box-shadow: 0 0 0 3px var(--c-primary-xlt);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.2rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
  user-select: none;
  background: var(--c-bg);
  transition: background .15s, color .15s;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--c-primary);
  line-height: 1;
  flex-shrink: 0;
  margin-left: 1rem;
  transition: transform .2s;
}
.faq-item[open] .faq-question::after { transform: rotate(45deg); }
.faq-question:hover { background: var(--c-primary-xlt); color: var(--c-primary-dark); }
.faq-item[open] .faq-question { background: var(--c-primary-light); color: var(--c-primary-dark); }

.faq-answer {
  padding: 1rem 1.2rem 1.1rem;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
}
.faq-answer p {
  font-size: .92rem;
  color: var(--c-text-md);
  line-height: 1.75;
  margin: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   DEBUGGING CALLOUTS
   ═══════════════════════════════════════════════════════════════════════════ */
.debug-callout {
  display: flex;
  gap: 1rem;
  background: linear-gradient(135deg, #FFFBEB, #FEF3C7);
  border: 1px solid #FCD34D;
  border-left: 4px solid #F59E0B;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.debug-icon {
  font-size: 1.3rem;
  line-height: 1.4;
  flex-shrink: 0;
}
.debug-body { flex: 1; }
.debug-body strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: #92400E;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .35rem;
}
.debug-body { font-size: .9rem; color: #78350F; line-height: 1.7; }

/* ═══════════════════════════════════════════════════════════════════════════
   TASK-LIST CHECKBOXES
   ═══════════════════════════════════════════════════════════════════════════ */
.article-inner .task-list-item {
  list-style: none;
  margin-left: -1.6em;
  padding-left: 1.9em;
  position: relative;
}
.article-inner .task-list-item input[type="checkbox"] {
  position: absolute;
  left: 0;
  top: .3em;
  width: 1em;
  height: 1em;
  accent-color: var(--c-primary);
  cursor: pointer;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BLOCKQUOTES
   ═══════════════════════════════════════════════════════════════════════════ */
.article-inner blockquote {
  border-left: 4px solid var(--c-primary);
  padding: .75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--c-primary-xlt);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-text-md);
  font-size: .95rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */
.site-footer {
  background: #1E293B;
  color: #94A3B8;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem var(--gutter) 2rem;
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 3rem;
}

.footer-brand { display: flex; flex-direction: column; gap: 1rem; }
.footer-tagline { font-size: .82rem; color: #64748B; line-height: 1.5; }
.footer-logo { display: inline-flex; opacity: .75; transition: opacity .2s; }
.footer-logo:hover { opacity: 1; }

.footer-sections { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }

.footer-col-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #CBD5E1;
  margin-bottom: .85rem;
}
.footer-col-title a { color: inherit; text-decoration: none; }
.footer-col-title a:hover { color: #fff; }

.footer-col ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: .45rem; }
.footer-col ul a { color: #64748B; font-size: .83rem; text-decoration: none; transition: color .15s; }
.footer-col ul a:hover { color: var(--c-primary-light); }

.footer-bottom {
  border-top: 1px solid #334155;
  padding: 1.25rem var(--gutter);
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}
.footer-bottom p { font-size: .78rem; color: #475569; margin: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */

/* Tablet */
@media (max-width: 1024px) {
  .hero-inner-wrap {
    grid-template-columns: 1fr;
    background: linear-gradient(135deg, #F5F3FF 0%, #FCE7F3 55%, #E0F2FE 100%);
  }
  .hero-graphic { display: none; }
  .hero-content { max-width: 100%; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-features { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --header-h: 58px; }

  /* Header */
  .logo-line2 { display: none; }

  .nav-toggle { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-border);
    padding: .75rem var(--gutter);
    box-shadow: var(--shadow);
    z-index: 99;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: .25rem; }
  .nav-link { border-radius: var(--radius); padding: .6rem .9rem; }

  /* Hero */
  .hero-inner-wrap {
    grid-template-columns: 1fr;
  }
  .hero-graphic { display: none; }
  .hero-content { max-width: 100%; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }

  /* About */
  .about-features { grid-template-columns: 1fr; }

  /* Sections grid */
  .sections-grid { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-sections { grid-template-columns: 1fr 1fr; }

  /* Article */
  .article-inner pre { border-radius: var(--radius); padding: 1rem; }
  .copy-button { top: .5rem; right: .5rem; }
}

@media (max-width: 480px) {
  .footer-sections { grid-template-columns: 1fr; }
  .hero-title { font-size: 1.75rem; }
  .about-features { grid-template-columns: 1fr; }
}

/* Wide screens — let content breathe */
@media (min-width: 1600px) {
  .hero { padding-top: 7rem; padding-bottom: 7rem; }
}

/* Print */
@media print {
  .site-header, .site-footer, .breadcrumbs, .copy-button { display: none; }
  .article-inner { max-width: 100%; padding: 0; }
}