/* ============================================
   FilterReady Home — Premium Editorial Design
   ============================================ */

:root {
  /* Brand palette */
  --navy: #1B3A5C;
  --navy-deep: #0f2438;
  --navy-light: #2a4f75;
  --aqua: #2BBDBD;
  --aqua-dark: #22a0a0;
  --aqua-subtle: #e8f8f8;
  --off-white: #F7F9FB;
  --warm-white: #fafbfd;

  /* Neutrals */
  --text: #1a2332;
  --text-secondary: #475569;
  --muted: #64748b;
  --light-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --surface: #f8fafc;
  --white: #ffffff;

  /* Elevation */
  --shadow-xs: 0 1px 2px rgba(27,58,92,0.04);
  --shadow-sm: 0 1px 3px rgba(27,58,92,0.06), 0 1px 2px rgba(27,58,92,0.04);
  --shadow-md: 0 4px 6px -1px rgba(27,58,92,0.07), 0 2px 4px -2px rgba(27,58,92,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(27,58,92,0.08), 0 4px 6px -4px rgba(27,58,92,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(27,58,92,0.08), 0 8px 10px -6px rgba(27,58,92,0.03);

  /* Layout */
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --container: 1120px;
  --container-narrow: 780px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body {
  font-family: 'Newsreader', Georgia, 'Times New Roman', serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--aqua-dark); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--navy); }

/* Typography scale — editorial hierarchy */
h1, h2, h3, h4 {
  font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  line-height: 1.2;
  color: var(--navy);
  letter-spacing: -0.02em;
}
h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 1.75rem; font-weight: 600; }
h3 { font-size: 1.15rem; font-weight: 600; }

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

/* ============================================
   Header — Clean, authoritative
   ============================================ */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.95);
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 68px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.logo-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.logo-img { height: 34px; width: 34px; flex-shrink: 0; }
.logo-text {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover {
  color: var(--navy);
  background: var(--surface);
}
.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--navy);
  padding: 0.25rem;
}

/* ============================================
   Homepage Hero — Confident, editorial
   ============================================ */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 4.5rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
}
/* Subtle texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(43,189,189,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(43,189,189,0.05) 0%, transparent 50%);
  pointer-events: none;
}
.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 4rem;
  align-items: center;
  position: relative;
}
.hero h1 {
  color: var(--white);
  font-size: 2.75rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}
.hero p {
  color: rgba(255,255,255,0.75);
  font-size: 1.1rem;
  line-height: 1.65;
  max-width: 520px;
}
.hero-image-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.06);
}
.hero-image-wrapper img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}
.hero-sublink {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-top: 1rem;
}
.hero-sublink a { color: rgba(255,255,255,0.6); }
.hero-sublink a:hover { color: var(--white); }

/* ZIP tool — pill search bar */
.hero-zip-tool { margin: 2.25rem 0 0; }
.water-tool__search {
  display: flex;
  gap: 0;
  max-width: 460px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15), 0 0 0 1px rgba(255,255,255,0.08);
}
.water-tool__search input {
  flex: 1;
  padding: 0.95rem 1.25rem;
  font-size: 1rem;
  font-family: 'Outfit', sans-serif;
  border: none;
  background: rgba(255,255,255,0.97);
  color: var(--navy);
  font-weight: 600;
  letter-spacing: 0.12em;
  outline: none;
}
.water-tool__search input::placeholder {
  color: #94a3b8;
  font-weight: 400;
  letter-spacing: 0;
}
.water-tool__search input:focus {
  background: var(--white);
  box-shadow: inset 0 0 0 2px var(--aqua);
}
.water-tool__search button {
  padding: 0.95rem 1.75rem;
  font-size: 0.9rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  border: none;
  background: #16a34a;
  color: var(--white);
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.water-tool__search button:hover { background: #15803d; }
.water-tool__search button:disabled { background: #86efac; cursor: wait; }
.hero-zip-results { margin-top: 1.5rem; }

/* ============================================
   Sections — Clean rhythm
   ============================================ */
section { padding: 4rem 0; }
.section-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: 1.75rem;
  color: var(--navy);
  margin-bottom: 0.35rem;
}
.section-subtitle {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 2rem;
}

/* ============================================
   Topic Cards — Refined, purposeful
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  position: relative;
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--border-light);
}
.card-content {
  padding: 1.5rem;
  flex: 1;
}
.card-content h3 {
  font-size: 1rem;
  color: var(--navy);
  margin-bottom: 0.5rem;
}
.card-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
/* Accent-left topic cards */
.card--accent {
  border-left: 3px solid var(--aqua);
}

/* ============================================
   Post Cards — Magazine-style
   ============================================ */
.post-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s, transform 0.25s;
}
.post-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.post-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.post-card img,
.post-card picture,
.post-card picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.4s ease;
}
.post-card:hover img,
.post-card:hover picture img {
  transform: scale(1.03);
}
.post-card-body {
  padding: 1.35rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-category {
  font-family: 'Outfit', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--aqua-dark);
  margin-bottom: 0.5rem;
  display: inline-block;
}
.post-card-body h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 0.6rem;
  line-height: 1.35;
}
.post-card-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}
.post-card-body .read-more {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--aqua-dark);
  margin-top: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s;
}
.post-card:hover .read-more { gap: 0.5rem; }

/* ============================================
   Blog Listing — Editorial grid
   ============================================ */
.blog-listing {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}
.blog-listing-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--navy);
}
.blog-listing-header h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}
.blog-listing-header p {
  color: var(--muted);
  font-size: 1rem;
}
/* Featured post — large, attention-grabbing */
.featured-post {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
}
.featured-post:hover .featured-post-image img,
.featured-post:hover .featured-post-image picture img {
  transform: scale(1.02);
}
.featured-post-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
  box-shadow: var(--shadow-md);
}
.featured-post-image img,
.featured-post-image picture,
.featured-post-image picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.featured-post-body .post-category { margin-bottom: 0.75rem; }
.featured-post-body h2 {
  font-size: 1.65rem;
  color: var(--navy);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}
.featured-post-body p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.featured-post-body .read-more {
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--aqua-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s;
}
.featured-post:hover .read-more { gap: 0.5rem; }

/* Blog post grid heading */
.blog-grid-heading {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

/* ============================================
   Post Template — Full-width hero, editorial
   ============================================ */
.post-hero-banner {
  background: var(--navy);
  padding: 3.5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.post-hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(43,189,189,0.06) 0%, transparent 60%);
  pointer-events: none;
}
.post-header {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}
.post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.post-hero-banner .post-category {
  color: var(--aqua);
}
.post-hero-banner time {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}
.post-title {
  color: var(--white);
  font-size: 2.5rem;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}
.post-excerpt {
  color: rgba(255,255,255,0.65);
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* Post article body */
.post {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}
.post .hero-image {
  margin: -2rem auto 2.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 720px;
  position: relative;
  z-index: 1;
}
.post .hero-image img,
.post .hero-image picture,
.post .hero-image picture img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  display: block;
}

/* Blog post content — editorial typography */
.blog-post-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text);
  max-width: 680px;
  margin: 0 auto;
}
.blog-post-content h2 {
  font-size: 1.5rem;
  color: var(--navy);
  margin: 3rem 0 1rem;
  padding-top: 1rem;
}
.blog-post-content h3 {
  font-size: 1.2rem;
  color: var(--navy);
  margin: 2.25rem 0 0.75rem;
}
.blog-post-content p { margin-bottom: 1.35rem; }
.blog-post-content ul, .blog-post-content ol {
  margin: 1.25rem 0 1.5rem 1.5rem;
}
.blog-post-content li {
  margin-bottom: 0.5rem;
  line-height: 1.75;
}
.blog-post-content a {
  color: var(--aqua-dark);
  text-decoration: underline;
  text-decoration-color: rgba(43,189,189,0.3);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}
.blog-post-content a:hover {
  text-decoration-color: var(--aqua-dark);
}
.blog-post-content strong { color: var(--navy); }
.blog-post-content blockquote {
  border-left: 3px solid var(--aqua);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  max-width: 680px;
}
.back-link:hover { color: var(--navy); }

/* ============================================
   Interior Pages — Clean, readable
   ============================================ */
.page-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 3rem 1.5rem 3.5rem;
  text-align: center;
}
.page-hero h1 {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}
.page-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

.page-content {
  max-width: var(--container-narrow);
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.page-content h1 {
  font-size: 2rem;
  color: var(--navy);
  margin-bottom: 0.75rem;
}
.page-content h2 {
  font-size: 1.35rem;
  color: var(--navy);
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}
.page-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}
.page-content p {
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}
.page-content ul { padding-left: 1.5rem; margin-bottom: 1.25rem; }
.page-content li {
  line-height: 1.8;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}
.page-content a { color: var(--aqua-dark); }
.page-content strong { color: var(--text); }

/* ============================================
   CTA & Buttons
   ============================================ */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.75rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--aqua);
  color: var(--white);
}
.cta-button:hover {
  background: var(--aqua-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
/* Navy variant available if needed: class="cta-button cta-button--navy" */

/* ============================================
   Email Capture / CTA Section
   ============================================ */
.email-capture {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 4.5rem 1.5rem;
  text-align: center;
}
.email-capture h2 {
  font-size: 1.75rem;
  color: var(--navy);
  margin-bottom: 0.6rem;
}
.email-capture p {
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 1.75rem;
  font-size: 1rem;
}

/* Trust bar */
.trust-bar {
  background: var(--navy-deep);
  padding: 1.5rem;
  text-align: center;
}
.trust-bar p {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
}
.trust-bar .divider {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  vertical-align: middle;
  margin: 0 1rem;
}

/* ============================================
   Water Quality Tool
   ============================================ */
.water-tool {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}
.water-tool__header {
  text-align: center;
  margin-bottom: 2.5rem;
}
.water-tool__badge {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua-dark);
  background: var(--aqua-subtle);
  padding: 0.35rem 0.85rem;
  border-radius: 99px;
  margin-bottom: 1rem;
}
.water-tool__header h1 {
  font-size: 2.25rem;
  margin: 0 0 0.5rem;
}
.water-tool__header p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 32rem;
  margin: 0 auto;
}
.water-tool .water-tool__search {
  max-width: 480px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}

.tool-explainer {
  margin: 3rem 0 2rem;
  padding: 2.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.tool-explainer h2 {
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  text-align: center;
}
.explainer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.explainer-step { text-align: center; }
.explainer-step strong {
  display: block;
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.explainer-step p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
}
.common-concerns { margin-top: 3rem; }
.common-concerns h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

/* ============================================
   Footer — Dark, structured
   ============================================ */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.8);
  padding: 4rem 1.5rem 2rem;
  margin-top: 0;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-site-name {
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  font-family: 'Outfit', sans-serif;
}
.footer-tagline {
  color: rgba(255,255,255,0.45);
  font-size: 0.875rem;
  line-height: 1.55;
}
.footer-links h4 {
  color: var(--white);
  font-family: 'Outfit', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.625rem; }
.footer-links a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-size: 0.875rem;
  font-family: 'Outfit', sans-serif;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-disclosure {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  line-height: 1.6;
  max-width: 700px;
}
.footer-copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.25);
  font-family: 'Outfit', sans-serif;
}

/* ============================================
   About page
   ============================================ */
.about-content {
  max-width: var(--container-narrow);
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.about-content h2 {
  font-size: 1.35rem;
  color: var(--navy);
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}
.about-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}
.about-content p {
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ============================================
   Start Here — Step-based layout
   ============================================ */
.start-here-content {
  max-width: var(--container-narrow);
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.start-here-content h2 {
  font-size: 1.35rem;
  color: var(--navy);
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.start-here-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}
.start-here-content p {
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.start-here-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}
.start-here-content li {
  line-height: 1.8;
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.start-here-content a { color: var(--aqua-dark); }
.start-here-content strong { color: var(--text); }

/* Step numbers */
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--aqua-subtle);
  color: var(--aqua-dark);
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ============================================
   Responsive — Mobile first refinement
   ============================================ */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero h1 { font-size: 2.1rem; }
  .hero-image-wrapper { display: none; }
  .featured-post { grid-template-columns: 1fr; gap: 1.5rem; }
  .featured-post-body h2 { font-size: 1.4rem; }
}
@media (max-width: 600px) {
  h1 { font-size: 1.75rem; }
  .card-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero { padding: 3rem 1rem 3rem; }
  .hero h1 { font-size: 1.75rem; }
  .water-tool__search { flex-direction: column; border-radius: var(--radius); }
  .water-tool__search input { border-radius: var(--radius) var(--radius) 0 0; }
  .water-tool__search button { border-radius: 0 0 var(--radius) var(--radius); }
  .explainer-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .hamburger { display: block; }
  .nav-links { display: none; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem;
    gap: 0;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.active a { padding: 0.75rem 1rem; }
  .footer-bottom { flex-direction: column; }
  .post-title { font-size: 1.75rem; }
  .post-hero-banner { padding: 2.5rem 1.5rem 3rem; }
  .page-hero { padding: 2.5rem 1.5rem; }
  .page-hero h1 { font-size: 1.75rem; }
  .trust-bar .divider { margin: 0 0.5rem; }
}

/* ============================================
   Water Quality Tool Results (Preserved)
   ============================================ */
.wt-loading, .wt-error { text-align: center; padding: 1rem; border-radius: 0.5rem; font-size: 0.875rem; margin-bottom: 1rem; }
.wt-loading { background: #f0f9ff; color: #1B3A5C; }
.wt-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

.wt-summary { display: flex; align-items: center; gap: 0.75rem; padding: 0.875rem 1.125rem; border-radius: 0.625rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.wt-summary--warn { background: #fffbeb; border: 1px solid #fde68a; }
.wt-summary--ok { background: #f0fdf4; border: 1px solid #86efac; }
.wt-summary__icon { font-size: 1.5rem; }
.wt-summary__sub { font-size: 0.75rem; color: #64748b; margin-top: 0.125rem; }

.wt-violation { display: flex; gap: 0.625rem; padding: 0.625rem 0.875rem; border: 1px solid #e2e8f0; border-radius: 0.5rem; margin-bottom: 0.375rem; }
.wt-violation--high   { border-left: 4px solid #fca5a5; }
.wt-violation--medium { border-left: 4px solid #fcd34d; }
.wt-violation--low    { border-left: 4px solid #86efac; }
.wt-violation__icon { font-size: 1.125rem; flex-shrink: 0; margin-top: 0.125rem; }
.wt-violation__body { flex: 1; min-width: 0; }
.wt-violation__header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.375rem; }
.wt-violation__name { font-weight: 700; font-size: 0.8125rem; }
.wt-badge { font-size: 0.625rem; font-weight: 700; padding: 0.125rem 0.5rem; border-radius: 99px; }
.wt-badge--high   { background: #fee2e2; color: #991b1b; }
.wt-badge--medium { background: #fef3c7; color: #92400e; }
.wt-badge--low    { background: #ecfdf5; color: #065f46; }
.wt-violation__meta { font-size: 0.6875rem; color: #64748b; margin-top: 0.1875rem; }
.wt-violation__effects { font-size: 0.6875rem; color: #475569; margin-top: 0.3125rem; line-height: 1.4; }
.wt-violation__filter { font-size: 0.6875rem; color: #2BBDBD; margin-top: 0.3125rem; font-weight: 600; }

.wt-recs__intro { font-size: 0.8125rem; color: #64748b; margin-bottom: 0.875rem; }
.wt-rec { border: 1px solid #e2e8f0; border-radius: 0.625rem; padding: 0.875rem 1.125rem; margin-bottom: 0.875rem; background: #f8fafc; }
.wt-rec h3 { font-size: 0.875rem; margin: 0 0 0.1875rem; color: #1B3A5C; }
.wt-rec__why { font-size: 0.75rem; color: #64748b; margin: 0 0 0.625rem; }

.wt-product { display: flex; justify-content: space-between; align-items: center; background: #fff; border: 1px solid #e2e8f0; border-radius: 0.5rem; padding: 0.5625rem 0.75rem; margin-bottom: 0.375rem; flex-wrap: wrap; gap: 0.375rem; }
.wt-product__name { font-weight: 700; font-size: 0.8125rem; }
.wt-product__price { font-size: 0.75rem; color: #94a3b8; margin-left: 0.375rem; }
.wt-product__note { font-size: 0.6875rem; color: #64748b; margin-top: 0.125rem; }
.wt-product__cta { padding: 0.4375rem 0.875rem; font-size: 0.75rem; font-weight: 700; border-radius: 0.375rem; background: #1B3A5C; color: #fff; text-decoration: none; white-space: nowrap; flex-shrink: 0; }

.wt-email { background: linear-gradient(135deg, #f0f9ff, #f0fdf4); border: 1px solid #bae6fd; border-radius: 0.625rem; padding: 1.125rem 1.25rem; text-align: center; margin: 1.5rem 0; }
.wt-email strong { font-size: 0.9375rem; color: #1B3A5C; }
.wt-email p { font-size: 0.75rem; color: #334155; margin: 0.25rem 0 0.625rem; }
.wt-email__form { display: flex; gap: 0.375rem; justify-content: center; flex-wrap: wrap; }
.wt-email__form input[type="email"] { padding: 0.5625rem 0.75rem; font-size: 0.8125rem; border-radius: 0.375rem; border: 1px solid #7dd3fc; width: 12.5rem; }
.wt-email__form button { padding: 0.5625rem 1.125rem; font-size: 0.8125rem; font-weight: 700; border-radius: 0.375rem; border: none; background: #1B3A5C; color: #fff; cursor: pointer; }

.wt-disclaimer { font-size: 0.625rem; color: #94a3b8; line-height: 1.5; border-top: 1px solid #e2e8f0; padding-top: 0.875rem; margin-top: 1.5rem; }

/* Post article — extra styling for in-content elements */
.post-article { max-width: 680px; margin: 0 auto; }
.post-article .post-body { }