.filt-hero { margin-top: 112px; }

/* AquaFromAir — filtration page styles */

  /* ─── DESIGN TOKENS ───────────────────────────────── */
  :root {
    --abyss:      #1A2B2C;
    --teal:       #3D7A80;
    --teal-deep:  #2C5F64;
    --teal-mid:   #4E8F95;
    --aqua:       #86CCE0;
    --aqua-pale:  #C8E9F2;
    --linen:      #F2EBE1;
    --linen-mid:  #EAE0D4;
    --linen-dark: #DDD0C0;
    --gold:       #C8A96E;
    --mist:       #F2F5F2;
    --mist-pale:  #E6F3F4;
    --white:      #FFFFFF;
    --slate:      #7A9496;
    --text:       #2C3B3C;
    --text-light: #6B7C7D;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    font-family: 'Nunito Sans', sans-serif;
    background: var(--linen);
    color: var(--text);
    overflow-x: hidden;
    padding-top: 120px; /* nav 72px + afticker 48px */
  }

  /* ─── TICKER ─────────────────────────────────────── */
  .ticker-wrap {
    display: none;
  }
    overflow: hidden;
    background: var(--abyss);
    border-top: 1px solid rgba(255,255,255,0.06);
  }
  .ticker {
    display: flex; width: max-content;
    animation: ticker 48s linear infinite;
  }
  .ticker-item {
    padding: 13px 40px;
    font-family: 'Jost', sans-serif;
    font-size: 11px; letter-spacing: 0.10em; text-transform: uppercase;
    color: rgba(255,255,255,0.6); white-space: nowrap;
    border-right: 1px solid rgba(255,255,255,0.1);
  }
  .ticker-item span { color: var(--gold); }
  @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

  /* ─── NAV ─────────────────────────────────────────── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: 72px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 max(56px, calc((100% - 1100px) / 2));
    background: rgba(242,235,225,0.96);
    backdrop-filter: blur(16px);
    transition: box-shadow 0.3s;
  }
  nav.scrolled {
    box-shadow: 0 2px 24px rgba(26,43,44,0.08);
  }
  .nav-logo {
    display: flex; align-items: center;
    height: 36px;
    text-decoration: none;
    flex-shrink: 0;
  }
  .nav-logo svg { height: 28px; width: auto; }
  .nav-links {
    display: flex; gap: 36px; list-style: none;
  }
  .nav-links a {
    font-size: 13px; font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--text); text-decoration: none;
    transition: color 0.2s;
    position: relative;
  }
  .nav-links a::after {
    content: '';
    position: absolute; bottom: -4px; left: 0; right: 0;
    height: 1.5px; background: var(--teal);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.25s ease;
  }
  .nav-links a:hover { color: var(--teal); }
  .nav-links a:hover::after { transform: scaleX(1); }
  .nav-links a.active { color: var(--teal); }
  .nav-links a.active::after { transform: scaleX(1); }
  .nav-right {
    display: flex; align-items: center; gap: 20px;
  }
  .nav-social {
    display: flex; align-items: center; gap: 14px;
  }
  .nav-social a {
    display: flex; align-items: center; justify-content: center;
    color: var(--slate);
    transition: color 0.2s, transform 0.2s;
  }
  .nav-social a:hover { color: var(--teal); transform: translateY(-1px); }
  .nav-social-divider {
    width: 1px; height: 20px;
    background: rgba(61,122,128,0.2);
  }
  .nav-cta {
    background: var(--teal); color: var(--white);
    padding: 11px 28px;
    font-size: 13px; font-weight: 600;
    letter-spacing: 0.03em;
    text-decoration: none;
    border-radius: 2px;
    transition: background 0.2s, transform 0.15s;
  }
  .nav-cta:hover { background: var(--teal-deep); transform: translateY(-1px); }

  /* ─── HAMBURGER ──────────────────────────────────── */

  /* ─── MOBILE DRAWER ──────────────────────────────── */


  /* ─── UTILITIES ───────────────────────────────────── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  .reveal {
    opacity: 0; transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.visible {
    opacity: 1; transform: translateY(0);
  }

  /* ─── MOBILE ──────────────────────────────────────── */
  @media (max-width: 768px) {
    nav {
      padding: 0 20px;
      height: 64px;
      border-bottom: none !important;
      box-shadow: none;
    }
    .nav-links,
    .nav-right { display: none; }
    .nav-logo svg { height: 36px; }

  }

  /* ─── PAGE LAYOUT ─────────────────────────── */

  /* ─── HERO ────────────────────────────────── */
  .filt-hero {
    background: var(--abyss);
    padding: 40px 72px 72px;
    position: relative;
    overflow: hidden;
  }
  .filt-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 70% 80% at 80% 50%, rgba(134,204,224,0.06) 0%, transparent 70%);
    pointer-events: none;
  }
  .filt-hero-inner {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 64px; align-items: center;
    position: relative; z-index: 1;
  }
  .filt-hero-kicker {
    font-family: 'Jost', sans-serif; font-size: 11px;
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--aqua); margin-bottom: 14px;
  }
  .filt-hero-kicker::before { display: none; }
  .filt-hero-title {
    font-family: 'Fraunces', serif;
    font-size: clamp(34px, 4.5vw, 56px);
    font-weight: 300; color: var(--linen);
    line-height: 1.1; margin-bottom: 22px;
  }
  .filt-hero-title em { font-style: italic; color: var(--aqua); }
  .filt-hero-body {
    font-size: 15px; line-height: 1.7;
    color: rgba(255,255,255,0.70);
    max-width: 480px; margin-bottom: 36px;
  }
  .filt-hero-stats {
    display: flex; gap: 36px;
  }
  .filt-hero-stat-val {
    font-family: 'Fraunces', serif; font-size: 32px;
    font-weight: 300; color: var(--aqua);
    line-height: 1;
  }
  .filt-hero-stat-label {
    font-family: 'Jost', sans-serif; font-size: 10px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: rgba(255,255,255,0.70); margin-top: 4px;
  }
  /* Pipeline visual */
  .filt-hero-pipeline {
    display: flex; flex-direction: column;
    gap: 0; position: relative;
  }
  .pipe-stage {
    display: flex; align-items: center; gap: 16px;
    padding: 7px 20px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 4px;
    transition: background 0.2s;
    position: relative;
  }
  .pipe-stage + .pipe-stage { margin-top: 6px; }
  .pipe-stage:hover { background: rgba(134,204,224,0.06); }
  .pipe-stage-num {
    font-family: 'Jost', sans-serif; font-size: 10px;
    color: var(--aqua); width: 18px; flex-shrink: 0;
    text-align: right;
  }
  .pipe-stage-icon {
    width: 32px; height: 32px; border-radius: 50%;
    background: rgba(61,122,128,0.2);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .pipe-stage-icon svg { width: 15px; height: 15px; fill: var(--aqua); }
  .pipe-stage-info { flex: 1; }
  .pipe-stage-name {
    font-family: 'Jost', sans-serif; font-size: 12px;
    font-weight: 500; color: var(--linen);
    letter-spacing: 0.02em;
  }
  .pipe-stage-tag {
    font-family: 'Jost', sans-serif; font-size: 9px;
    color: var(--aqua); margin-top: 2px; letter-spacing: 0.06em;
  }
  .pipe-stage-spec {
    font-family: 'Jost', sans-serif; font-size: 10px;
    color: rgba(255,255,255,0.70); letter-spacing: 0.04em;
    text-align: right;
  }
  .pipe-arrow {
    display: flex; justify-content: center;
    padding: 2px 0;
    color: rgba(134,204,224,0.3); font-size: 12px;
  }
  .pipe-note {
    font-family: 'Jost', sans-serif; font-size: 10px;
    letter-spacing: 0.06em; text-transform: uppercase;
    color: rgba(255,255,255,0.70); text-align: center;
    margin-top: 12px;
  }

  /* ─── HERO BUTTONS ───────────────────────── */
  .filt-hero-btns {
    display: flex; align-items: center; gap: 20px;
    margin-top: 36px; flex-wrap: wrap;
  }
  .btn-hero-primary {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--aqua); color: var(--abyss);
    padding: 11px 28px;
    font-family: 'Jost', sans-serif; font-size: 13px; font-weight: 500;
    letter-spacing: 0.03em; text-decoration: none;
    border-radius: 2px;
    transition: background 0.2s, transform 0.15s;
  }
  .btn-hero-primary:hover { background: var(--aqua-pale); transform: translateY(-1px); }
  .btn-hero-primary svg { width: 15px; height: 15px; flex-shrink: 0; transition: transform 0.2s; }
  .btn-hero-primary:hover svg { transform: translateX(3px); }
  .btn-hero-ghost {
    font-family: 'Jost', sans-serif; font-size: 13px; font-weight: 400;
    color: rgba(255,255,255,0.45); text-decoration: none;
    letter-spacing: 0.04em;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
  }
  .btn-hero-ghost:hover { color: rgba(255,255,255,0.8); border-color: rgba(255,255,255,0.5); }

  /* ─── SECTION SHARED ──────────────────────── */
  .section-linen { background: var(--linen); padding: 80px 72px; }
  .section-white { background: var(--white); padding: 80px 72px; }
  .section-mist { background: var(--mist); padding: 80px 72px; }
  .section-dark { background: var(--abyss); padding: 80px 72px; }
  .section-inner { max-width: 1100px; margin: 0 auto; }
  .section-kicker {
    font-family: 'Jost', sans-serif; font-size: 11px;
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--teal); margin-bottom: 14px;
  }
  .section-kicker::before { display: none; }
  .section-dark .section-kicker { color: var(--aqua); }
  .section-title {
    font-family: 'Fraunces', serif;
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 300; color: var(--abyss);
    line-height: 1.15; margin-bottom: 16px;
  }
  .section-title em { font-style: italic; color: var(--teal); }
  .section-title-light em { font-style: italic; color: var(--aqua); }
  .section-title-light { color: var(--linen); }
  .section-body {
    font-size: 15px; line-height: 1.75;
    color: var(--text-light); max-width: 800px;
  }

  /* ─── FILTER CARDS (the 8 filter types) ──── */
  .filters-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--linen-dark);
    border: 1px solid var(--linen-dark);
    border-radius: 4px; overflow: hidden;
    margin-top: 48px;
  }
  .filter-card {
    background: var(--white);
    padding: 32px 28px;
    transition: background 0.2s;
    position: relative;
  }
  .filter-card:hover { background: var(--mist-pale); }
  .filter-card-badge {
    display: inline-block;
    font-family: 'Jost', sans-serif;
    font-size: 10px; letter-spacing: 0.08em;
    color: var(--teal);
    background: rgba(61,122,128,0.1);
    padding: 3px 8px; border-radius: 2px;
    margin-bottom: 8px;
  }
  .filter-card-icon {
    width: 44px; height: 44px; flex-shrink: 0;
    background: var(--mist-pale); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
  }
  .filter-card-header {
    display: flex; align-items: flex-start; gap: 14px;
    margin-bottom: 16px;
  }
  .filter-card-header-right {
    display: flex; flex-direction: column;
  }
  .filter-card-icon svg { width: 18px; height: 18px; }
  .filter-card-name {
    font-family: 'Fraunces', serif; font-size: 17px;
    font-weight: 400; color: var(--abyss);
    line-height: 1.2; margin-bottom: 0;
  }
  .filter-card-desc {
    font-size: 13px; line-height: 1.65;
    color: var(--text-light); margin-bottom: 16px;
  }
  .filter-card-spec {
    font-family: 'Jost', sans-serif; font-size: 10px;
    color: var(--teal); letter-spacing: 0.04em;
    border-top: 1px solid var(--linen-dark);
    padding-top: 12px; margin-top: auto;
  }

  /* ─── BY MODEL TABLE ──────────────────────── */
  .model-table-wrap {
    overflow-x: auto; margin-top: 48px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.08);
  }
  .model-table {
    width: 100%; border-collapse: collapse;
    min-width: 760px;
  }
  .model-table thead th {
    background: rgba(255,255,255,0.06);
    padding: 14px 18px;
    font-family: 'Jost', sans-serif; font-size: 10px;
    letter-spacing: 0.10em; text-transform: uppercase;
    color: var(--aqua); font-weight: 500;
    text-align: left; white-space: nowrap;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .model-table tbody tr {
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: background 0.15s;
  }
  .model-table tbody tr:last-child { border-bottom: none; }
  .model-table tbody tr:hover { background: rgba(134,204,224,0.04); }
  .model-table tbody td {
    padding: 14px 18px;
    font-size: 13px; color: rgba(255,255,255,0.65);
    vertical-align: middle;
  }
  .model-table .td-model {
    font-family: 'Fraunces', serif; font-size: 15px;
    font-weight: 400; color: var(--linen);
  }
  .model-table .td-category {
    font-family: 'Jost', sans-serif; font-size: 10px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--slate);
  }
  .check-yes {
    display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; border-radius: 50%;
    background: rgba(61,122,128,0.25);
  }
  .model-table td { white-space: nowrap; }
  .model-table .td-model,
  .model-table .td-category { white-space: normal; }
  .model-table td { white-space: nowrap; }
  .model-table .td-model,
  .model-table .td-category { white-space: normal; }
  .check-yes svg { width: 10px; height: 10px; stroke: var(--aqua); stroke-width: 2.5; fill: none; }
  .check-no {
    display: inline-block; width: 8px; height: 1px;
    background: rgba(255,255,255,0.15);
  }
  .stage-badge {
    font-family: 'Jost', sans-serif; font-size: 11px;
    color: var(--aqua); font-weight: 500;
  }
  .filter-pills {
    display: flex; flex-wrap: wrap; gap: 4px;
  }
  .fpill {
    font-family: 'Jost', sans-serif; font-size: 9px;
    letter-spacing: 0.04em;
    background: rgba(134,204,224,0.1);
    color: var(--aqua);
    padding: 2px 6px; border-radius: 2px;
    white-space: nowrap;
  }
  .fpill.fpill-ro { background: rgba(200,169,110,0.12); color: var(--gold); }
  .fpill.fpill-uv { background: rgba(160,120,200,0.12); color: #C8A0E0; }

  /* ─── WATER QUALITY STRIP ─────────────────── */
  .quality-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--linen-dark);
    border: 1px solid var(--linen-dark);
    border-radius: 4px; overflow: hidden;
    margin-top: 48px;
  }
  .quality-item {
    background: var(--white);
    padding: 36px 28px;
  }
  .quality-val {
    font-family: 'Fraunces', serif; font-size: 36px;
    font-weight: 300; color: var(--teal);
    line-height: 1; margin-bottom: 6px;
  }
  .quality-metric {
    font-family: 'Jost', sans-serif; font-size: 11px;
    letter-spacing: 0.10em; text-transform: uppercase;
    color: var(--abyss); margin-bottom: 10px;
  }
  .quality-desc {
    font-size: 12px; line-height: 1.6;
    color: var(--text-light);
  }

  /* ─── REPLACEMENT SCHEDULE ────────────────── */
  .replace-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px; margin-top: 48px;
  }
  .replace-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 4px; padding: 28px 24px;
    position: relative; overflow: hidden;
  }
  .replace-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 2px; background: var(--teal);
  }
  .replace-interval {
    font-family: 'Fraunces', serif; font-size: 28px;
    font-weight: 300; color: var(--aqua);
    line-height: 1; margin-bottom: 4px;
  }
  .replace-unit {
    font-family: 'Jost', sans-serif; font-size: 10px;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--aqua); margin-bottom: 16px;
  }
  .replace-filters {
    display: flex; flex-wrap: wrap; gap: 4px;
    margin-bottom: 14px;
  }
  .replace-filter-tag {
    font-family: 'Jost', sans-serif; font-size: 10px;
    color: var(--aqua);
    background: rgba(134,204,224,0.1);
    padding: 3px 7px; border-radius: 2px;
  }
  .replace-desc {
    font-size: 13px; line-height: 1.6;
    color: rgba(255,255,255,0.70);
  }

  /* ─── FAQ ─────────────────────────────────── */
  .filt-faq-heading { text-align: center; }
  .filt-faq-heading .section-kicker { justify-content: center; }
  .filt-faq { max-width: 720px; margin: 48px auto 0; }
  .filt-faq-item {
    border-bottom: 1px solid var(--linen-dark);
  }
  .filt-faq-q {
    display: flex; align-items: center; justify-content: space-between;
    padding: 22px 0; cursor: pointer; gap: 20px;
    list-style: none;
    font-size: 15px; font-weight: 600; color: var(--abyss);
    transition: color 0.2s;
  }
  .filt-faq-q:hover { color: var(--teal); }
  .filt-faq-icon {
    width: 22px; height: 22px; flex-shrink: 0;
    border: 1.5px solid var(--linen-dark);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: border-color 0.2s, transform 0.3s;
  }
  .filt-faq-icon svg { width: 10px; height: 10px; stroke: var(--teal); stroke-width: 2; fill: none; transition: transform 0.3s; }
  .filt-faq-item.open .filt-faq-icon { border-color: var(--teal); }
  .filt-faq-item.open .filt-faq-icon svg { transform: rotate(45deg); }
  .filt-faq-a {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
  }
  .filt-faq-a-inner {
    font-size: 14px; line-height: 1.75;
    color: var(--text-light);
    padding: 0 0 22px;
  }

  /* ─── CTA BANNER ──────────────────────────── */
  .filt-cta {
    background: var(--teal);
    padding: 72px;
    text-align: center;
    position: relative; overflow: hidden;
  }
  .filt-cta::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 60% 100% at 50% 0%, rgba(255,255,255,0.06) 0%, transparent 60%);
    pointer-events: none;
  }
  .filt-cta-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
  .filt-cta-title {
    font-family: 'Fraunces', serif; font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 300; color: var(--white);
    line-height: 1.15; margin-bottom: 16px;
  }
  .filt-cta-title em { font-style: italic; color: var(--aqua-pale); }
  .filt-cta-body {
    font-family: 'Nunito Sans', sans-serif;
    font-size: 15px; font-weight: 300; line-height: 1.7;
    color: rgba(255,255,255,0.85); margin-bottom: 32px;
  }
  .filt-cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
  .btn-cta-primary {
    background: var(--abyss); color: var(--white);
    padding: 14px 32px; font-size: 13px; font-weight: 500;
    letter-spacing: 0.04em; text-decoration: none;
    border-radius: 2px;
    transition: background 0.2s, transform 0.15s;
  }
  .btn-cta-primary:hover { background: var(--teal-deep); transform: translateY(-1px); }
  .btn-cta-secondary {
    border: 1.5px solid rgba(255,255,255,0.5); color: var(--white);
    padding: 13px 32px; font-size: 13px; font-weight: 400;
    letter-spacing: 0.04em; text-decoration: none;
    border-radius: 2px;
    transition: border-color 0.2s, background 0.2s, transform 0.15s;
  }
  .btn-cta-secondary:hover { border-color: var(--white); background: rgba(255,255,255,0.08); transform: translateY(-1px); }

  /* ─── MOBILE ──────────────────────────────── */
  @media (max-width: 768px) {
    body { padding-top: 102px; } /* nav 64px + afticker 48px - 10px */
    .filt-hero { padding: 48px 20px 52px; }
    .filt-hero-title { font-size: clamp(28px, 7.5vw, 34px); }
    .filter-card { padding: 20px; }
    .filter-card-header { display: flex !important; align-items: flex-start; gap: 12px; margin-bottom: 10px; }
    .filter-card-icon { width: 32px; height: 32px; flex-shrink: 0; }
    .filter-card-icon svg { width: 15px; height: 15px; }
    .filter-card-name { font-size: 14px; margin-bottom: 0; }
    .filt-hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .filt-hero-stats { gap: 16px; flex-wrap: wrap; }
    .filt-hero-stat-val { font-size: 22px; }
    .filt-cta-title { font-size: 30px !important; white-space: normal; }
    .filt-cta-body { font-size: 15px; }
    .section-linen, .section-white, .section-mist, .section-dark { padding: 56px 20px; }
    .filt-cta { padding: 56px 20px; }
    .filters-grid { grid-template-columns: 1fr 1fr; }
    .quality-strip { grid-template-columns: 1fr 1fr; }
    .replace-grid { grid-template-columns: 1fr; gap: 14px; }
    .model-table-wrap { margin-top: 32px; }
    .filt-hero-pipeline { display: none; }
  }
  @media (max-width: 480px) {
    .filters-grid { grid-template-columns: 1fr; }
    .quality-strip { grid-template-columns: 1fr; }
  }

@media (max-width: 768px) {
  .model-table-swipe-hint {
    display: block !important;
    font-family: 'Jost', sans-serif;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    text-align: right;
    margin-top: 8px;
  }
}

@media (max-width: 768px) {
  .model-table-swipe-hint {
    display: block !important;
    font-family: 'Jost', sans-serif;
    font-size: 11px; letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    text-align: right; margin-top: 8px;
  }

  /* Title standard — mobile 30px */
  .filt-hero-title,
  .filt-cta-title {
    font-size: 30px !important;
  }

  /* Title standard */
  .section-title,
  .section-title-light {
    font-size: 30px !important;
  }
}