/* ============================================================
   To Live DuoPure TL-5866 — Product Showcase
   Design system: calm, premium, minimal. Family-health reassurance.
   Type: Plus Jakarta Sans (display) + Inter (text)
   ============================================================ */

/* ---------- Fonts (self-hosted, latin) ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/inter-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/inter-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../assets/fonts/inter-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/plus-jakarta-sans-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../assets/fonts/plus-jakarta-sans-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/plus-jakarta-sans-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../assets/fonts/plus-jakarta-sans-800.woff2') format('woff2');
}

/* ---------- Tokens ---------- */
:root {
  --ink: #0e1216;
  --text: #414d59;
  --muted: #76828e;
  --bg: #ffffff;
  --surface: #f4f6f7;
  --line: #e7ebee;

  --teal: #0e8a6f;
  --teal-deep: #0a6b57;
  --teal-soft: #e9f5f1;
  --teal-line: #d3e9e2;

  --dark: #0b0e11;
  --dark-2: #14181d;
  --on-dark: #f3f5f6;
  --on-dark-muted: #9aa5ae;

  --aqi-good: #27a468;
  --aqi-mod: #eeb02c;
  --aqi-poor: #ec7c30;
  --aqi-bad: #df4646;

  --font-display: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-text: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;

  --nav-h: 68px;

  --shadow-soft: 0 24px 70px -20px rgba(14, 18, 22, 0.16);
  --shadow-card: 0 2px 6px rgba(14, 18, 22, 0.04), 0 18px 44px -18px rgba(14, 18, 22, 0.12);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-text);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }

a { color: inherit; text-decoration: none; }

button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }

::selection { background: rgba(14, 138, 111, 0.18); }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}

/* ---------- Layout helpers ---------- */
.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

.section {
  padding-block: clamp(72px, 10vw, 128px);
}

.section--tight { padding-block: clamp(56px, 7vw, 88px); }

.section-head {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-head--left {
  text-align: left;
  margin-inline: 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
}

.h2 {
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.h3 {
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.lead {
  font-size: clamp(17px, 2vw, 19px);
  line-height: 1.7;
  color: var(--text);
  margin-top: 20px;
}

.footnote {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.005em;
  padding: 15px 28px;
  border-radius: 999px;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out),
              background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn svg { flex: none; }

.btn--primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 10px 26px -12px rgba(14, 18, 22, 0.45);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -12px rgba(14, 18, 22, 0.5);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  border: 1.5px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.btn--pending {
  cursor: not-allowed;
  opacity: 0.64;
  border-style: dashed;
  box-shadow: none;
}

.btn--pending:hover { border-color: var(--line); transform: none; }
.btn--pending small { font-size: 10px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.btn--teal {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 10px 26px -12px rgba(14, 138, 111, 0.55);
}
.btn--teal:hover { background: var(--teal-deep); transform: translateY(-2px); }

.btn--on-dark {
  border: 1.5px solid rgba(255, 255, 255, 0.28);
  color: #fff;
}
.btn--on-dark:hover { border-color: #fff; transform: translateY(-2px); }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.is-solid {
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom-color: var(--line);
}

.nav__inner {
  width: min(1320px, 100% - 48px);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  margin-right: 8px;
}

.brand-mark { width: 28px; height: 28px; object-fit: contain; flex: none; }
.brand-wordmark { width: 84px; height: auto; object-fit: contain; flex: none; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-inline: auto;
}

.nav__link {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav__link:hover { color: var(--ink); background: rgba(14, 18, 22, 0.05); }

.nav__link.is-active { color: var(--ink); font-weight: 600; }

.nav__link--pending { cursor: not-allowed; opacity: 0.58; white-space: nowrap; }
.nav__link--pending small { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }

.nav__cta { padding: 11px 22px; font-size: 14px; }

.nav__burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  position: relative;
  z-index: 130;
}
.nav__burger span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.3s var(--ease-out), opacity 0.2s ease, top 0.3s var(--ease-out);
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { top: 21px; }
.nav__burger span:nth-child(3) { top: 26px; }

body.menu-open .nav__burger span:nth-child(1) { top: 21px; transform: rotate(45deg); }
body.menu-open .nav__burger span:nth-child(2) { opacity: 0; }
body.menu-open .nav__burger span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* Mobile sheet */
.nav__sheet {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(255, 255, 255, 0.98);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  padding: calc(var(--nav-h) + 24px) 32px 40px;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

body.menu-open .nav__sheet { opacity: 1; pointer-events: auto; }

.nav__sheet a,
.nav__sheet .nav__pending {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  transform: translateY(12px);
  opacity: 0;
  transition: transform 0.45s var(--ease-out), opacity 0.45s var(--ease-out);
}

body.menu-open .nav__sheet a,
body.menu-open .nav__sheet .nav__pending {
  transform: translateY(0);
  opacity: 1;
}

.nav__sheet .nav__pending { cursor: not-allowed; color: var(--muted); }
.nav__sheet .nav__pending small { display: block; margin-top: 2px; font-family: var(--font-text); font-size: 11px; font-weight: 600; }

.nav__sheet .btn { margin-top: 28px; align-self: flex-start; }

@media (max-width: 920px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; margin-left: auto; }
  .nav__sheet { display: flex; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: clamp(640px, 92svh, 980px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #ece7df;
}

.hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* The approved hero is a square lifestyle asset. Keeping it contained on
     wide screens preserves the complete purifier rather than cropping it. */
  object-fit: contain;
  object-position: right bottom;
  transform: scale(1.06);
  animation: heroZoom 2.4s var(--ease-out) forwards;
}

@keyframes heroZoom {
  to { transform: scale(1); }
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(250, 248, 244, 0.5) 0%, rgba(250, 248, 244, 0) 26%),
    linear-gradient(100deg, rgba(250, 248, 244, 0.92) 0%, rgba(250, 248, 244, 0.55) 34%, rgba(250, 248, 244, 0) 60%);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
  padding-block: clamp(120px, 16vh, 180px) clamp(56px, 9vh, 96px);
  max-width: none;
}

.hero__box { max-width: 780px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(14, 18, 22, 0.08);
  padding: 9px 16px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  margin-bottom: 26px;
}

.hero__eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.hero h1 {
  font-size: clamp(42px, 7vw, 76px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.hero__sub {
  margin-top: 22px;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.65;
  color: #3c4650;
  max-width: 480px;
}

.hero__actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  width: min(100%, 660px);
  max-width: 100%;
  margin-top: 30px;
}

.hero__actions .btn {
  width: 100%;
  min-width: 0;
  min-height: 52px;
  padding: 12px 14px;
  gap: 0;
  font-size: 14px;
}

.hero__actions .btn svg { display: none; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: clamp(40px, 6vh, 64px);
  border-top: 1px solid rgba(14, 18, 22, 0.12);
  max-width: 620px;
}

.hero__stat {
  padding: 18px 28px 0 0;
  margin-right: 28px;
}

.hero__stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.hero__stat span {
  font-size: 13.5px;
  color: #5a646e;
}

/* ---------- Bento stats ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.bento__card {
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  background: var(--surface);
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
}

.bento__card--teal { background: var(--teal-soft); }
.bento__card--dark { background: var(--dark); }
.bento__card--dark .bento__label { color: var(--on-dark); }
.bento__card--dark .bento__desc { color: var(--on-dark-muted); }

.bento__card--img { padding: 0; background: var(--dark); }
.bento__card--img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.94;
}
.bento__card--img .bento__overlay {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 26px 28px;
  background: linear-gradient(180deg, rgba(11, 14, 17, 0) 0%, rgba(11, 14, 17, 0.72) 60%);
}
.bento__card--img .bento__label { color: #fff; font-size: 19px; }
.bento__card--img .bento__desc { color: rgba(255, 255, 255, 0.75); }

.bento__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 4.6vw, 54px);
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.bento__num small {
  font-size: 0.42em;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0;
}

.bento__num small em {
  display: inline-block;
  margin-left: 2px;
  font-size: 0.5em;
  font-style: normal;
  white-space: nowrap;
  vertical-align: 0.18em;
}
.bento__num--smart { max-width: 250px; font-size: clamp(22px, 2.5vw, 31px); line-height: 1.12; }

.bento__filter-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
}

.filter-pair { display: flex; align-items: flex-end; gap: 6px; color: var(--teal); }
.filter-pair svg { width: 29px; height: 38px; fill: rgba(255, 255, 255, 0.45); stroke: currentColor; stroke-width: 1.4; }
.filter-pair svg:last-child { transform: translateY(-7px); opacity: 0.75; }

.bento__card--teal .bento__num { color: var(--teal-deep); }
.bento__card--teal .bento__num small { color: var(--teal); }
.bento__card--dark .bento__num { color: #fff; }
.bento__card--dark .bento__num small { color: var(--on-dark-muted); }

.bento__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin-top: 14px;
  letter-spacing: -0.01em;
}

.bento__desc {
  font-size: 14px;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.55;
}

.bento__icon {
  position: absolute;
  top: 28px;
  left: 30px;
  width: 40px;
  height: 40px;
  color: var(--teal);
}
.bento__card--dark .bento__icon { color: #7ec8b6; }

.bento__chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 14px;
}

.chip svg { width: 14px; height: 14px; color: var(--teal); }

@media (max-width: 980px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .bento { grid-template-columns: 1fr; }
  .bento__card { min-height: 220px; }
  .bento__card--dark,
  .bento__card:nth-child(6) { padding-top: 88px; }
  .bento__card:nth-child(6) { min-height: 280px; }
}

/* ---------- Pollutants / problem ---------- */
.band { background: var(--surface); }

.pollutants {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 860px;
  margin: 0 auto;
}

.pollutant {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(14, 18, 22, 0.03);
}

.pollutant svg { width: 18px; height: 18px; color: var(--teal); flex: none; }

.explainers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: clamp(48px, 6vw, 72px);
}

.explainer {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.explainer__tag {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}

.explainer h3 { margin-top: 10px; font-size: 19px; }

.explainer p { margin-top: 10px; font-size: 14.5px; color: var(--text); line-height: 1.6; }

@media (max-width: 800px) {
  .explainers { grid-template-columns: 1fr; }
}

/* ---------- Split feature rows ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.split--rev > .split__media { order: 2; }

.split__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.split__media img { width: 100%; height: 100%; object-fit: cover; }

.split__copy .lead { margin-top: 18px; }

.feature-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.feature-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15.5px;
  color: var(--text);
}

.feature-list li b { color: var(--ink); font-weight: 600; }

.feature-list .tick {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--teal-soft);
  color: var(--teal-deep);
  display: grid;
  place-items: center;
  margin-top: 2px;
}

.feature-list .tick svg { width: 12px; height: 12px; }

/* ---------- Dual-sided airflow visual ---------- */
.airflow-visual {
  min-height: clamp(500px, 44vw, 570px);
  border: 1px solid var(--teal-line);
  background:
    radial-gradient(circle at 50% 58%, rgba(14, 138, 111, 0.12) 0, rgba(14, 138, 111, 0.035) 28%, transparent 58%),
    linear-gradient(135deg, #f8fbfa 0%, #eef7f4 100%);
  isolation: isolate;
}

.airflow-visual::before,
.airflow-visual::after {
  content: '';
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.airflow-visual::before {
  inset: 22px;
  border: 1px solid rgba(14, 138, 111, 0.1);
  border-radius: calc(var(--radius-lg) - 10px);
}

.airflow-visual::after {
  left: 50%;
  bottom: 9%;
  width: 50%;
  height: 10%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(14, 18, 22, 0.14), transparent 68%);
  transform: translateX(-50%);
  filter: blur(7px);
}

.airflow-visual__paths {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.airflow-visual__paths--rear { z-index: 2; }
.airflow-visual__paths--front { z-index: 4; }

.airflow-path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.airflow-path--in {
  stroke: #82909a;
  stroke-width: 2.4;
  stroke-dasharray: 4 12;
  opacity: 0.72;
}

.airflow-path--out {
  stroke: var(--teal);
  stroke-width: 2.35;
  stroke-dasharray: 5 12;
  filter: drop-shadow(0 0 5px rgba(14, 138, 111, 0.18));
}

.airflow-path--in-left { animation: airInLeft 1.75s linear infinite; }
.airflow-path--in-right { animation: airInRight 1.75s linear infinite; }
.airflow-path--out-left,
.airflow-path--out-right { animation: airOut 1.55s linear infinite; }
.airflow-path--delay { animation-delay: -0.72s; }
.airflow-path--out-right { animation-delay: -0.45s; }

@keyframes airInLeft { to { stroke-dashoffset: -34px; } }
@keyframes airInRight { to { stroke-dashoffset: 34px; } }
@keyframes airOut { to { stroke-dashoffset: -38px; } }

.airflow-visual__halo {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 50%;
  width: 53%;
  aspect-ratio: 1;
  border: 1px solid rgba(14, 138, 111, 0.16);
  border-radius: 50%;
  transform: translate(-50%, -38%);
  animation: airHalo 3.2s ease-in-out infinite;
}

@keyframes airHalo {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -38%) scale(0.94); }
  50% { opacity: 1; transform: translate(-50%, -38%) scale(1.03); }
}

.airflow-visual__product {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 4%;
  width: min(46%, 270px);
  transform: translateX(-50%);
}

.airflow-visual .airflow-visual__product img {
  width: 100%;
  height: auto;
  object-fit: contain;
  transform: none;
  filter: drop-shadow(0 24px 24px rgba(14, 18, 22, 0.16));
  will-change: auto;
}

.airflow-visual__out,
.airflow-visual__side,
.airflow-visual__badge {
  position: absolute;
  z-index: 5;
}

.airflow-visual__out {
  top: 9%;
  left: 50%;
  color: var(--teal-deep);
  font-family: var(--font-text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.015em;
  transform: translateX(-50%);
  white-space: nowrap;
}

.airflow-visual__side {
  top: 53%;
  color: #687782;
  font-family: var(--font-text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.airflow-visual__side--left { left: 7%; }
.airflow-visual__side--right { right: 7%; }

.airflow-visual__badge {
  left: 50%;
  bottom: 6.5%;
  padding: 7px 11px;
  border: 1px solid rgba(14, 138, 111, 0.2);
  border-radius: 999px;
  color: #315d51;
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: none;
  transform: translateX(-50%);
  white-space: nowrap;
}

@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; }
  .split--rev > .split__media { order: 0; }
  .airflow-visual { min-height: min(570px, 122vw); }
}

@media (max-width: 480px) {
  .airflow-visual { min-height: 480px; }
  .airflow-visual__product { width: min(53%, 240px); }
  .airflow-visual__side { top: 55%; font-size: 11px; }
  .airflow-visual__side--left { left: 4.5%; }
  .airflow-visual__side--right { right: 4.5%; }
  .airflow-visual__out { top: 7%; font-size: 10px; }
}

/* ---------- Filtration duo ---------- */
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.duo figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  position: relative;
}

.duo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }

.duo figure:first-child img { object-position: center bottom; }

.duo figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(14, 18, 22, 0.06);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
}

/* Airflow banner */
.banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 18px;
}

.banner img { width: 100%; aspect-ratio: 21 / 10; object-fit: cover; object-position: center 30%; }

.banner__chip {
  position: absolute;
  left: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  background: rgba(11, 14, 17, 0.72);
  backdrop-filter: blur(8px);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(13px, 1.6vw, 15px);
  padding: 12px 20px;
  border-radius: 999px;
}

@media (max-width: 680px) {
  .banner img { aspect-ratio: 4 / 3; }
}

/* ---------- Performance stats panel ---------- */
.perf {
  background: var(--teal-soft);
  border: 1px solid var(--teal-line);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 5vw, 64px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 48px);
  text-align: center;
}

.perf__item b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--teal-deep);
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.perf__item b small { font-size: 0.45em; font-weight: 700; letter-spacing: 0; }

.perf__item span {
  display: block;
  margin-top: 10px;
  font-size: 14.5px;
  color: #33534a;
  line-height: 1.5;
}

@media (max-width: 720px) {
  .perf { grid-template-columns: 1fr; padding: 36px 28px; }
}

/* ---------- Quiet / dB ---------- */
.quiet {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 5.5vw, 72px);
  color: var(--on-dark);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  overflow: hidden;
  position: relative;
}

.quiet::after {
  content: '';
  position: absolute;
  right: -180px;
  top: -180px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(126, 200, 182, 0.16), transparent);
  pointer-events: none;
}

.quiet .eyebrow { color: #7ec8b6; margin-bottom: 14px; }

.quiet h2 { color: #fff; font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: -0.02em; }

.quiet p { color: var(--on-dark-muted); margin-top: 16px; font-size: 16px; }

.db-scale { display: grid; gap: 18px; }

.db-row { display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 16px; }

.db-row__label { font-size: 13.5px; color: var(--on-dark-muted); text-align: right; line-height: 1.3; }

.db-row__label b { display: block; color: var(--on-dark); font-family: var(--font-display); font-size: 15px; }

.db-row__track { position: relative; height: 34px; }

.db-row__bar {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.14);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
  transition: width 1.1s var(--ease-out);
  min-width: 58px;
}

.db-row--hero .db-row__bar {
  background: linear-gradient(90deg, var(--teal), #35b494);
  color: #fff;
  box-shadow: 0 6px 24px -6px rgba(14, 138, 111, 0.55);
}

@media (max-width: 880px) {
  .quiet { grid-template-columns: 1fr; }
  .db-row { grid-template-columns: 88px 1fr; }
}

/* ---------- Smart cards ---------- */
.smart-grid { display: grid; gap: 18px; }

.smart-card {
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.smart-card--rev { grid-template-columns: 0.95fr 1.05fr; }

.smart-card__copy { padding: clamp(30px, 4.5vw, 60px); }

.smart-card__copy h3 { font-size: clamp(22px, 2.8vw, 30px); font-weight: 800; letter-spacing: -0.02em; }

.smart-card__copy p { margin-top: 14px; font-size: 15.5px; line-height: 1.7; }

.smart-card__media { height: 100%; min-height: 300px; position: relative; }

.smart-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.smart-card__media--display { overflow: hidden; background: #f4f4f4; }
.smart-card__media--display img {
  object-position: left center;
  transform: scale(1.5);
  transform-origin: left center;
}

.smart-card--teal { background: var(--teal-soft); }

.smart-card__media--pad {
  display: grid;
  place-items: center;
  padding: 32px;
}

.smart-card__media--pad img {
  position: static;
  width: auto;
  height: min(352px, 88vw);
  max-width: 62%;
  border-radius: 26px;
  box-shadow: var(--shadow-soft);
}

.smart-compatibility {
  margin-top: 26px;
  padding-left: 16px;
  border-left: 2px solid var(--teal);
}

.smart-compatibility span {
  display: block;
  margin-bottom: 5px;
  color: var(--teal-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.smart-compatibility strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.4;
}

@media (max-width: 880px) {
  .smart-card, .smart-card--rev { grid-template-columns: 1fr; }
  .smart-card__media { min-height: 240px; order: -1; }
}

/* Voice strip */
.voice {
  margin-top: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: clamp(28px, 4vw, 44px);
  display: flex;
  align-items: center;
  gap: clamp(20px, 4vw, 40px);
  flex-wrap: wrap;
}

.voice__bubble {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.6vw, 24px);
  color: var(--ink);
  letter-spacing: -0.015em;
  flex: 1;
  min-width: 260px;
}

.voice__bubble span { color: var(--teal-deep); }

.voice__meta { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; }

/* Icon row */
.icon-row {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  margin-top: clamp(40px, 6vw, 64px);
}

.icon-row__item { text-align: center; }

.icon-row__circle {
  width: 64px;
  height: 64px;
  margin: 0 auto;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--ink);
  background: #fff;
  transition: transform 0.35s var(--ease-out), border-color 0.2s ease;
}

.icon-row__item:hover .icon-row__circle { transform: translateY(-4px); border-color: var(--teal); color: var(--teal-deep); }

.icon-row__item > .icon-row__circle {
  display: grid;
  place-items: center;
  margin: 0 auto;
  line-height: 0;
}

.icon-row__circle svg { display: block; width: 26px; height: 26px; }

.icon-row__item > span:not(.icon-row__circle) {
  display: block;
  margin-top: 12px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
}

@media (max-width: 880px) {
  .icon-row { grid-template-columns: repeat(3, 1fr); gap: 24px 14px; }
}
@media (max-width: 460px) {
  .icon-row { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Filter life ---------- */
.filterlife {
  background: var(--dark);
  border-radius: var(--radius-lg);
  color: var(--on-dark);
  padding: clamp(36px, 5.5vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.filterlife__stat {
  font-family: var(--font-display);
  color: #fff;
  padding-right: clamp(28px, 4vw, 56px);
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.filterlife__value {
  display: flex;
  align-items: baseline;
  gap: 12px;
  white-space: nowrap;
}

.filterlife__number {
  margin-left: -0.07em;
  font-size: clamp(64px, 7vw, 88px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.9;
}

.filterlife__unit {
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 600;
  letter-spacing: 0;
  color: #7ec8b6;
}

.filterlife__label {
  display: block;
  margin-bottom: 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7ec8b6;
}

.filterlife h2 { color: #fff; font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -0.02em; }

.filterlife p:not([class]) { color: var(--on-dark-muted); margin-top: 16px; font-size: 15.5px; line-height: 1.7; }

.filterlife .eyebrow { color: #7ec8b6; }

.filterlife .chip { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.14); color: #e8edf0; }
.filterlife .chip svg { color: #7ec8b6; }

.filterlife__controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 24px;
}

.filterlife__controls .chip,
.filterlife__controls .btn {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  justify-content: center;
  padding: 9px 10px;
  text-align: center;
  font-size: 12.5px;
  line-height: 1.2;
}

.filterlife__typical {
  display: block;
  margin-top: 18px;
  font-family: var(--font-display);
  color: #fff;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0;
  line-height: 1.4;
}

@media (max-width: 820px) {
  .filterlife { grid-template-columns: 1fr; }
  .filterlife__stat {
    padding-right: 0;
    padding-bottom: 28px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }
}

@media (max-width: 600px) {
  .filterlife__controls { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .filterlife__number { font-size: clamp(48px, 16vw, 64px); }
}

/* ---------- Compare teaser ---------- */
.compare-teaser {
  text-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 72px);
  background:
    radial-gradient(600px 220px at 50% -60px, rgba(14, 138, 111, 0.07), transparent),
    #fff;
}

/* ---------- Specs ---------- */
.specs {
  max-width: 880px;
  margin-inline: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.specs__row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 18px 32px;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.specs__row:first-child { border-top: none; }

.specs__row:nth-child(odd) { background: #fafbfc; }

.specs__key {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  font-size: 14.5px;
}

.specs__val { color: var(--text); }

@media (max-width: 620px) {
  .specs__row { grid-template-columns: 1fr; gap: 4px; padding: 16px 22px; }
}

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin-inline: auto; }

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  transition: color 0.2s ease;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary:hover { color: var(--teal-deep); }

.faq summary .plus {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  display: grid;
  place-items: center;
  transition: transform 0.3s var(--ease-out), background-color 0.2s ease, border-color 0.2s ease;
}

.faq summary .plus svg { width: 12px; height: 12px; }

.faq details[open] summary .plus {
  transform: rotate(45deg);
  background: var(--teal-soft);
  border-color: var(--teal-line);
  color: var(--teal-deep);
}

.faq .faq__body {
  padding: 0 44px 24px 4px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- Support ---------- */
.support {
  background: var(--teal-soft);
  border: 1px solid var(--teal-line);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 72px);
  text-align: center;
}

.support h2 { font-size: clamp(26px, 3.6vw, 38px); }

.support p { max-width: 560px; margin: 16px auto 0; }

.support__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.support__meta {
  margin-top: 26px;
  font-size: 13.5px;
  color: #33534a;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--dark);
  color: var(--on-dark-muted);
  padding: clamp(56px, 8vw, 88px) 0 40px;
  margin-top: clamp(72px, 10vw, 128px);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
}

.footer__brand .brand-mark { filter: invert(1); opacity: 0.95; }
.footer__brand .brand-wordmark { filter: invert(1); opacity: 0.95; }

.footer__tag { margin-top: 14px; font-size: 14px; max-width: 260px; line-height: 1.6; }

.footer h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.footer__pending { color: var(--on-dark-muted); opacity: 0.65; cursor: not-allowed; }

.footer a { font-size: 14.5px; transition: color 0.2s ease; }

.footer a:hover { color: #fff; }

.footer__notes {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
  line-height: 1.7;
  color: #6d7883;
}

.footer__notes p { margin-top: 6px; }

.footer__bottom {
  margin-top: 28px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

@media (max-width: 880px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ---------- Reveal animations ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  will-change: opacity, transform;
}

html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

html.js .reveal-group > * {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

html.js .reveal-group.is-in > * {
  opacity: 1;
  transform: none;
}

html.js .reveal-group.is-in > *:nth-child(2) { transition-delay: 0.08s; }
html.js .reveal-group.is-in > *:nth-child(3) { transition-delay: 0.16s; }
html.js .reveal-group.is-in > *:nth-child(4) { transition-delay: 0.24s; }
html.js .reveal-group.is-in > *:nth-child(5) { transition-delay: 0.32s; }
html.js .reveal-group.is-in > *:nth-child(6) { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal, html.js .reveal-group > * {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* Screenshot / no-animation mode (?noanim) */
html.noanim { scroll-behavior: auto !important; }
html.noanim .reveal,
html.noanim .reveal-group > * {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}
html.noanim .hero__img { animation: none; transform: none; }

/* Section anchor offset for sticky nav */
section[id], div[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* ---------- Additions kept from the design-system pass ---------- */
/* Buttons: size inline icons that carry no width/height attributes */
.btn svg { width: 16px; height: 16px; }
.nav__cta svg { width: 15px; height: 15px; }

/* Hero entrance */
@keyframes heroRise {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}

html.js .hero-reveal { animation: heroRise 1s var(--ease-out) 0.15s backwards; }

/* dB bars: visible end-state without JS or with reduced motion */
html.no-js .db-row__bar { width: var(--bar, 58px); }

@media (prefers-reduced-motion: reduce) {
  .db-row__bar { width: var(--bar, 58px); transition: none; }
}

/* No-JS: everything visible */
html.no-js .reveal,
html.no-js .reveal-group > * {
  opacity: 1;
  transform: none;
}

/* ---------- Compare page ---------- */
.page-hero {
  padding: calc(var(--nav-h) + clamp(48px, 8vw, 96px)) 0 clamp(40px, 6vw, 72px);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(34px, 5.4vw, 56px);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.page-hero .lead { max-width: 640px; margin-inline: auto; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  -webkit-overflow-scrolling: touch;
}

.ctable {
  width: 100%;
  border-collapse: collapse;
  min-width: 880px;
  font-size: 14.5px;
}

.ctable th, .ctable td {
  padding: 16px 18px;
  text-align: left;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

.ctable thead th {
  border-top: none;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  background: #fafbfc;
  vertical-align: bottom;
  line-height: 1.4;
}

.ctable thead th small {
  display: block;
  font-family: var(--font-text);
  font-weight: 400;
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.ctable th:first-child {
  position: sticky;
  left: 0;
  background: #fff;
  z-index: 2;
  min-width: 168px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  font-size: 13.5px;
}

.ctable thead th:first-child { background: #fafbfc; z-index: 3; }

.ctable .is-us {
  background: var(--teal-soft);
  border-left: 1px solid var(--teal-line);
  border-right: 1px solid var(--teal-line);
}

.ctable thead .is-us {
  background: var(--teal);
  color: #fff;
}

.ctable thead .is-us small { color: rgba(255, 255, 255, 0.8); }

.ctable td.is-us { font-weight: 500; color: #123f34; }

.ctable .win { color: var(--teal-deep); font-weight: 600; }

.ctable tbody tr:hover td:not(.is-us) { background: #fafbfc; }

.legend-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

/* ---------- Interaction and showcase refinements ---------- */
.skip-link {
  position: fixed;
  z-index: 200;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

.skip-link:focus { transform: translateY(0); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  right: max(24px, calc((100vw - var(--container)) / 2));
  bottom: 34px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #4a535a;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.scroll-cue span {
  width: 22px;
  height: 34px;
  border: 1.5px solid rgba(14, 18, 22, 0.4);
  border-radius: 999px;
  position: relative;
}

.scroll-cue span::after {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  width: 3px;
  height: 7px;
  border-radius: 99px;
  background: var(--teal);
  transform: translateX(-50%);
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0%, 100% { opacity: 0.3; transform: translate(-50%, 0); }
  45% { opacity: 1; transform: translate(-50%, 10px); }
}

.media-caption {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 1;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  color: #fff;
  background: rgba(12, 15, 17, 0.48);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
}

.claim-note {
  max-width: 780px;
  margin: 20px auto 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

.claim-note--center { text-align: center; }

.split__media img {
  transform: translateY(var(--media-shift, 0)) scale(1.06);
  transition: transform 0.1s linear;
  will-change: transform;
}

/* The control-panel image should read as a centered technical detail, not a cropped background. */
.split__media.controls-media {
  min-height: clamp(330px, 30vw, 410px);
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 52% 48%, #ffffff 0, #f6f7f6 58%, #edf1ef 100%);
}

.split__media.controls-media img {
  width: min(100%, 640px);
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  transform: none;
  transition: none;
  will-change: auto;
}

.aqi-key {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 26px;
  padding: 9px 13px;
  border: 1px solid var(--teal-line);
  border-radius: 999px;
  color: #33534a;
  background: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 600;
}

.aqi-key__light {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--aqi-good);
  box-shadow: 0 0 0 5px rgba(39, 164, 104, 0.12);
}

.aqi-key__pulse {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  animation: aqiPulse 2s ease-out infinite;
}

@keyframes aqiPulse {
  0%, 100% { opacity: 0.35; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.25); }
}

.compare-teaser__button { margin-top: 30px; }

/* ---------- Comparison page additions ---------- */
.compare-page .nav__brand .brand-mark { object-position: center 19%; }

.compare-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.7fr);
  align-items: end;
  gap: 52px;
  margin-bottom: 42px;
}

.compare-intro .eyebrow { margin-bottom: 14px; }

.compare-intro > p {
  padding-bottom: 3px;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.7;
}

.ctable a {
  color: var(--teal-deep);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(10, 107, 87, 0.3);
  text-underline-offset: 3px;
}

.ctable a:hover { color: var(--ink); }
.table-muted { color: var(--muted); font-size: 12px; font-weight: 400; }

.comparison-notes {
  max-width: 910px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.65;
}

.comparison-notes p + p { margin-top: 7px; }
.comparison-notes b { color: var(--text); }

.choose-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.choose-grid article {
  padding: 32px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
}

.choose-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--teal-deep);
  background: var(--teal-soft);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
}

.choose-grid h3 { margin-top: 18px; font-size: 20px; }
.choose-grid p { margin-top: 10px; font-size: 14.5px; line-height: 1.65; }

@media (max-width: 880px) {
  .compare-intro { grid-template-columns: 1fr; gap: 20px; }
  .choose-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .scroll-cue { display: none; }
}

@media (max-width: 640px) {
  .hero { min-height: clamp(660px, 92svh, 940px); }
  .hero__content { width: min(var(--container), 100% - 32px); }
  .hero__actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    width: 100%;
  }
  .hero__actions .btn {
    min-height: 46px;
    padding: 10px 6px;
    font-size: clamp(11px, 3.2vw, 13px);
  }
  .hero__action-prefix { display: none; }
  .hero__img { object-fit: cover; object-position: 44% 42%; }
  .hero__scrim { background: linear-gradient(180deg, rgba(250, 248, 244, 0.9) 0%, rgba(250, 248, 244, 0.62) 46%, rgba(250, 248, 244, 0.18) 78%, rgba(250, 248, 244, 0.04) 100%); }
  .hero__stat { padding-top: 15px; margin-right: 18px; padding-right: 18px; }
  .hero__stat:last-child { display: none; }
  .container { width: min(var(--container), 100% - 32px); }
  .nav__inner { width: min(1320px, 100% - 32px); }
  .media-caption { left: 14px; bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-cue span::after,
  .aqi-key__pulse { animation: none; }
  .split__media img { transform: none; }
  .airflow-path,
  .airflow-visual__halo { animation: none; }
}