/* ==========================================================================
   Focus Block Resolution — Design System & Stylesheet
   Focus on Clarity, Neural Aesthetics, Workspace Acoustics & Lighting Comfort
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* Core Colors */
  --color-bg: #fbfbf9;
  --color-surface: #ffffff;
  --color-surface-subtle: #f5f6f1;
  --color-surface-hover: #eef1ea;
  --color-midnight: #121820;
  --color-midnight-subtle: #1c2430;
  --color-text-main: #19212a;
  --color-text-muted: #536271;
  --color-text-dim: #7a8a9a;

  /* Editorial Accents */
  --color-sage: #2a5142;
  --color-sage-light: #eaf1ed;
  --color-sage-dark: #1b382d;
  --color-amber: #c4763b;
  --color-amber-light: #faf2eb;
  --color-amber-dark: #9e5b29;
  
  /* Status & Borders */
  --color-border: #e2e6dd;
  --color-border-subtle: #ebefe6;
  --color-focus: #c4763b;
  --color-success: #2a5142;
  --color-warning: #c4763b;
  --color-danger: #c0392b;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(18, 24, 32, 0.04);
  --shadow-sm: 0 2px 6px rgba(18, 24, 32, 0.06);
  --shadow-md: 0 8px 24px rgba(18, 24, 32, 0.08);
  --shadow-lg: 0 16px 40px rgba(18, 24, 32, 0.12);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1240px;
  --max-article: 840px;
  --header-height: 76px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-midnight);
  color: #fff;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  z-index: 9999;
  border-radius: var(--radius-sm);
  transition: top 0.2s;
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
}

/* Reading Progress Bar */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-sage), var(--color-amber));
  width: 0%;
  z-index: 1001;
  transition: width 0.1s ease-out;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(251, 251, 249, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.header-container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 0.5rem;
}

.brand-logo {
  height: 44px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  color: var(--color-text-main);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-sage);
  background: var(--color-sage-light);
}

/* Dropdown Navigation */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
}

.dropdown-trigger svg {
  transition: transform 0.2s;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  display: block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-menu {
  display: none;
  opacity: 0;
  transform: translateY(8px);
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.6rem;
  list-style: none;
  z-index: 1010;
  transition: var(--transition);
}

.dropdown-item a {
  display: block;
  padding: 0.6rem 0.85rem;
  color: var(--color-text-main);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.dropdown-item a:hover {
  background: var(--color-surface-subtle);
  color: var(--color-sage);
}

/* Header CTAs */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-header-cta {
  background: var(--color-sage);
  color: #ffffff;
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-header-cta:hover {
  background: var(--color-sage-dark);
  box-shadow: 0 4px 12px rgba(42, 81, 66, 0.25);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-main);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.container-narrow {
  max-width: var(--max-article);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding: 1.25rem 0 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.breadcrumb-item a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumb-item a:hover {
  color: var(--color-sage);
  text-decoration: underline;
}

.breadcrumb-item.active {
  color: var(--color-text-main);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--color-text-dim);
  font-size: 0.75rem;
}

/* Hero Section */
.hero {
  padding: 3.5rem 0 4rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 10% 20%, rgba(234, 241, 237, 0.6) 0%, transparent 60%),
              radial-gradient(circle at 90% 80%, rgba(250, 242, 235, 0.6) 0%, transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-sage-light);
  color: var(--color-sage);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(42, 81, 66, 0.15);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.15;
  font-weight: 600;
  color: var(--color-midnight);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-sage);
  color: #fff;
  padding: 0.85rem 1.6rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
}

.btn-primary:hover {
  background: var(--color-sage-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(42, 81, 66, 0.28);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-surface);
  color: var(--color-text-main);
  padding: 0.85rem 1.6rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-text-muted);
  transform: translateY(-1px);
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.trust-item svg {
  color: var(--color-sage);
}

.hero-media {
  position: relative;
}

.hero-image-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.hero-floating-card {
  position: absolute;
  bottom: -1.25rem;
  left: -1.25rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-md);
  max-width: 260px;
}

.floating-card-title {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-midnight);
  margin-bottom: 0.25rem;
}

.floating-card-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Section Common */
.section {
  padding: 4.5rem 0;
}

.section-subtle {
  background-color: var(--color-surface-subtle);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-header {
  margin-bottom: 3rem;
}

.section-header.text-center {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-amber);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  line-height: 1.25;
  font-weight: 600;
  color: var(--color-midnight);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Feature Cards Grid */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(42, 81, 66, 0.25);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-sage-light);
  color: var(--color-sage);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card-title {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-link {
  color: var(--color-sage);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.card-link:hover {
  color: var(--color-sage-dark);
  gap: 0.55rem;
}

/* Media Cards */
.media-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.media-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.media-card-img-wrapper {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-subtle);
}

.media-card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.media-card:hover .media-card-img-wrapper img {
  transform: scale(1.03);
}

.media-card-category {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(18, 24, 32, 0.85);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
}

.media-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.media-card-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.65rem;
  line-height: 1.35;
}

.media-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Article & Content Template */
.article-header {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 1.25rem;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.85rem);
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-midnight);
  margin-bottom: 1rem;
}

.article-intro {
  font-size: 1.2rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  font-weight: 400;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3.5rem;
  align-items: start;
}

.article-content {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-main);
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-midnight);
  margin: 2.5rem 0 1rem;
  line-height: 1.3;
}

.article-content h3 {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin: 1.85rem 0 0.75rem;
  line-height: 1.4;
}

.article-content p {
  margin-bottom: 1.4rem;
}

.article-content ul, .article-content ol {
  margin: 1rem 0 1.5rem 1.75rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content strong {
  color: var(--color-midnight);
  font-weight: 700;
}

.article-featured-image {
  margin: 2rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.article-featured-image img {
  width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  padding: 0.6rem 1rem;
  background: var(--color-surface-subtle);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-subtle);
}

/* Callout Boxes */
.callout {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin: 2rem 0;
  display: flex;
  gap: 1rem;
}

.callout-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
}

.callout-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.callout-body {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.callout-tip {
  background: var(--color-sage-light);
  border-left: 4px solid var(--color-sage);
  color: var(--color-sage-dark);
}

.callout-warning {
  background: var(--color-amber-light);
  border-left: 4px solid var(--color-amber);
  color: var(--color-amber-dark);
}

.callout-info {
  background: var(--color-surface-subtle);
  border-left: 4px solid var(--color-midnight);
  color: var(--color-text-main);
}

/* Educational Health Disclaimer */
.educational-disclaimer {
  background: #f7f9f6;
  border: 1px solid #d5dfd7;
  border-left: 4px solid var(--color-sage);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 2.5rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #2b3a32;
}

.educational-disclaimer strong {
  color: var(--color-sage);
}

/* Sidebar & Table of Contents */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.toc-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.75rem;
}

.toc-title {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-midnight);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.toc-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: 0.25rem 0;
}

.toc-link:hover, .toc-link.active {
  color: var(--color-sage);
  font-weight: 600;
  transform: translateX(3px);
}

.sidebar-widget {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.75rem;
}

/* Data & Comparison Tables */
.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.data-table th {
  background: var(--color-surface-subtle);
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--color-midnight);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-main);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(245, 246, 241, 0.5);
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.badge-sage {
  background: var(--color-sage-light);
  color: var(--color-sage);
}

.badge-amber {
  background: var(--color-amber-light);
  color: var(--color-amber-dark);
}

.badge-graphite {
  background: #e2e8f0;
  color: #334155;
}

/* ==========================================================================
   Interactive Tools Styles
   ========================================================================== */

/* 1. Checklist Tool */
.checklist-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  margin: 2rem 0 3rem;
}

.checklist-score-card {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.score-info h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.35rem;
}

.score-meter {
  flex-grow: 1;
  max-width: 380px;
}

.score-bar-bg {
  height: 12px;
  background: #e2e6dd;
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.score-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-amber), var(--color-sage));
  border-radius: var(--radius-full);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.checklist-group {
  margin-bottom: 2rem;
}

.checklist-group-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  background: var(--color-surface);
}

.checklist-item:hover {
  background: var(--color-surface-subtle);
  border-color: var(--color-border);
}

.checklist-item.checked {
  background: var(--color-sage-light);
  border-color: rgba(42, 81, 66, 0.3);
}

.checklist-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border: 2px solid #a0aec0;
  border-radius: 6px;
  outline: none;
  cursor: pointer;
  margin-top: 2px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.checklist-checkbox:checked {
  background-color: var(--color-sage);
  border-color: var(--color-sage);
}

.checklist-checkbox:checked::after {
  content: '✓';
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.checklist-label {
  flex-grow: 1;
}

.checklist-item-title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-midnight);
  margin-bottom: 0.2rem;
}

.checklist-item-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.checklist-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

/* 2. Interactive Setup Assistant */
.assistant-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  margin: 2rem 0;
}

.step-indicator {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
}

.step-indicator::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-border);
  z-index: 1;
}

.step-node {
  position: relative;
  z-index: 2;
  text-align: center;
}

.step-node-circle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 auto 0.4rem;
  transition: var(--transition);
}

.step-node.active .step-node-circle {
  background: var(--color-sage);
  border-color: var(--color-sage);
  color: #fff;
}

.step-node.completed .step-node-circle {
  background: var(--color-amber);
  border-color: var(--color-amber);
  color: #fff;
}

.step-node-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.assistant-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.option-chip {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  cursor: pointer;
  background: var(--color-surface);
  transition: var(--transition);
  text-align: left;
}

.option-chip:hover {
  border-color: var(--color-sage);
  background: var(--color-surface-subtle);
}

.option-chip.selected {
  border-color: var(--color-sage);
  background: var(--color-sage-light);
  box-shadow: 0 0 0 1px var(--color-sage);
}

.option-chip-title {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-midnight);
  margin-bottom: 0.25rem;
}

.option-chip-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.assistant-nav-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.recommendations-deck {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.rec-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-sage);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-xs);
}

.rec-card-priority {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: 0.35rem;
}

.rec-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.5rem;
}

.rec-card-body {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 3. Desk Lamp Comparison Tool */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.filter-btn {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--color-sage);
  border-color: var(--color-sage);
  color: #fff;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.compare-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.compare-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-sage);
}

.compare-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-amber);
  margin-bottom: 0.35rem;
}

.compare-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.5rem;
}

.compare-price {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-sage);
  margin-bottom: 1rem;
}

.spec-list {
  list-style: none;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.spec-name {
  color: var(--color-text-muted);
}

.spec-value {
  font-weight: 600;
  color: var(--color-midnight);
}

/* 4. FAQ Accordion */
.faq-search-box {
  margin-bottom: 2rem;
  position: relative;
}

.faq-search-input {
  width: 100%;
  padding: 1rem 1.25rem 1rem 3rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  transition: var(--transition);
}

.faq-search-input:focus {
  border-color: var(--color-sage);
  outline: none;
  box-shadow: 0 0 0 3px rgba(42, 81, 66, 0.15);
}

.faq-search-icon {
  position: absolute;
  top: 50%;
  left: 1.25rem;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-midnight);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-question:hover {
  background: var(--color-surface-subtle);
}

.faq-icon {
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-main);
  line-height: 1.65;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 1rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* 5. Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
}

.contact-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.4rem;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  background: var(--color-surface);
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-sage);
  outline: none;
  box-shadow: 0 0 0 3px rgba(42, 81, 66, 0.12);
}

.form-error {
  color: var(--color-danger);
  font-size: 0.8125rem;
  margin-top: 0.35rem;
  display: none;
}

.form-group.has-error .form-input,
.form-group.has-error .form-textarea {
  border-color: var(--color-danger);
}

.form-group.has-error .form-error {
  display: block;
}

.form-notice {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 1.5rem 0;
}

.form-status-alert {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-top: 1.5rem;
  font-size: 0.9375rem;
}

.form-status-alert.success {
  display: block;
  background: var(--color-sage-light);
  color: var(--color-sage-dark);
  border: 1px solid rgba(42, 81, 66, 0.25);
}

/* Contact Info Card */
.contact-info-card {
  background: var(--color-midnight);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: #fff;
  margin-bottom: 1rem;
}

.contact-info-desc {
  color: #cbd5e1;
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.contact-detail-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-detail-icon {
  color: var(--color-amber);
}

.contact-detail-text h4 {
  font-size: 0.9375rem;
  color: #fff;
  margin-bottom: 0.2rem;
}

.contact-detail-text p {
  font-size: 0.875rem;
  color: #94a3b8;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  max-width: 460px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  z-index: 9990;
  display: none;
}

.cookie-banner.visible {
  display: block;
}

.cookie-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: 0.5rem;
}

.cookie-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.cookie-actions {
  display: flex;
  gap: 0.75rem;
}

/* Footer */
.site-footer {
  background: var(--color-midnight);
  color: #cbd5e1;
  padding: 4.5rem 0 2rem;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  color: #ffffff;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #94a3b8;
  max-width: 320px;
  margin-bottom: 1.25rem;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.875rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
  transform: translateX(2px);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: #64748b;
}

.footer-disclaimer {
  line-height: 1.6;
}

.footer-legal-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-legal-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.footer-legal-links a {
  color: #94a3b8;
  text-decoration: none;
}

.footer-legal-links a:hover {
  color: #ffffff;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    margin-top: 2.5rem;
  }
  .cards-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    gap: 0.5rem;
  }
  .site-nav.mobile-open {
    display: flex;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .header-actions {
    display: none;
  }
  .cards-grid-3, .cards-grid-2, .cards-grid-4 {
    grid-template-columns: 1fr;
  }
  .hero-floating-card {
    position: static;
    margin-top: 1rem;
    max-width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .checklist-score-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .score-meter {
    width: 100%;
    max-width: 100%;
  }
  .cookie-banner {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

/* Print Styles */
@media print {
  .site-header, .site-footer, .breadcrumb-nav, .checklist-actions, .filter-bar, .cookie-banner {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .container, .container-narrow {
    max-width: 100%;
    padding: 0;
  }
  .card, .checklist-container, .assistant-card {
    border: 1px solid #ccc;
    box-shadow: none;
  }
}