/* =============================================================
   O2Cure — Air Quality Awareness Page — awareness.css
   Bright, white, sky-blue accents. Hero language borrowed from
   the device preview dashboard (arc gauge · pulse rings · glow ·
   scanline) re-tuned for a light theme.
   ============================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* Sky (primary accent) */
    --sky-50:  #f0f9ff;
    --sky-100: #e0f2fe;
    --sky-200: #bae6fd;
    --sky-300: #7dd3fc;
    --sky-400: #38bdf8;
    --sky-500: #0ea5e9;
    --sky-600: #0284c7;
    --sky-700: #0369a1;

    /* Emerald (solution / CTA) */
    --em-50:  #ecfdf5;
    --em-100: #d1fae5;
    --em-500: #10b981;
    --em-600: #059669;
    --em-700: #047857;

    /* Ink */
    --ink:       #0b1220;
    --ink-2:     #1e293b;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --line:      rgba(15, 23, 42, 0.08);
    --line-2:    rgba(15, 23, 42, 0.12);

    /* US EPA official AQI colours */
    --aqi-good:      #00e400;
    --aqi-moderate:  #ffff00;
    --aqi-usg:       #ff7e00;
    --aqi-unhealthy: #ff0000;
    --aqi-very:      #8f3f97;
    --aqi-hazardous: #7e0023;

    /* Readable text variants of the above (on white) */
    --aqi-good-ink:      #15803d;
    --aqi-moderate-ink:  #a16207;
    --aqi-usg-ink:       #c2410c;
    --aqi-unhealthy-ink: #dc2626;
    --aqi-very-ink:      #8f3f97;
    --aqi-hazardous-ink: #7e0023;

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

    --shadow-sm: 0 1px 2px rgba(15,23,42,.04), 0 2px 8px rgba(15,23,42,.04);
    --shadow-md: 0 1px 2px rgba(15,23,42,.04), 0 12px 32px -8px rgba(15,23,42,.10);
    --shadow-lg: 0 2px 4px rgba(15,23,42,.04), 0 30px 60px -20px rgba(2,132,199,.22);

    --ease-out: cubic-bezier(.16, 1, .3, 1);
    --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

    --nav-h: 72px;
    --grid-size: 44px;
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }

body {
    font-family: var(--font-body);
    background: #ffffff;
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

.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;
}

/* =============================================================
   CURSOR GRID — "checkbox" grid revealed only around the pointer
   ============================================================= */
.cursor-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(2,132,199,0.18) 1px, transparent 1px),
        linear-gradient(90deg, rgba(2,132,199,0.18) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
    background-position: -1px -1px;
    -webkit-mask-image: radial-gradient(500px circle at var(--mx, -999px) var(--my, -999px), #000 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
            mask-image: radial-gradient(500px circle at var(--mx, -999px) var(--my, -999px), #000 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
    opacity: 0;
    transition: opacity .6s ease;
}

/* single highlighted "checkbox" cell under the cursor (hidden as requested) */
.cursor-cell {
    display: none;
}

body.grid-on .cursor-grid,
body.grid-on .cursor-cell { opacity: 1; }

@media (hover: none), (pointer: coarse) {
    .cursor-grid, .cursor-cell { display: none; }
}

/* everything real sits above the grid */
.site-nav, main, .site-footer { position: relative; z-index: 1; }

/* =============================================================
   NAVIGATION
   ============================================================= */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 40;
    height: var(--nav-h);
    background: rgba(255,255,255,0.72);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.site-nav.scrolled {
    background: rgba(255,255,255,0.86);
    border-bottom-color: var(--line);
    box-shadow: 0 8px 24px -16px rgba(15,23,42,.18);
}

.nav-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.brand img { height: 44px; width: auto; }
.brand-divider { width: 1px; height: 26px; background: var(--line-2); }
.brand-sub {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--sky-700);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}
.nav-links a {
    position: relative;
    display: block;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-600);
    border-radius: 999px;
    transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--ink); background: var(--sky-50); }
.nav-links a.active { color: var(--sky-700); background: var(--sky-50); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

/* =============================================================
   BUTTONS
   ============================================================= */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 52px;
    padding: 0 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .1px;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: transform .25s var(--ease-out), box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
    will-change: transform;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; transition: transform .25s var(--ease-out); }
.btn:hover svg.arrow-r { transform: translateX(3px); }
.btn:hover svg.arrow-d { transform: translateY(3px); }
.btn:active { transform: scale(.98); }
.btn:focus-visible { outline: 3px solid var(--sky-300); outline-offset: 3px; }

.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }

.btn-sky {
    color: #fff;
    background: linear-gradient(135deg, var(--sky-500) 0%, var(--sky-600) 100%);
    box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 8px 24px -6px rgba(2,132,199,.55);
}
.btn-sky:hover {
    transform: translateY(-2px);
    box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 14px 32px -8px rgba(2,132,199,.6);
}

.btn-emerald {
    color: #fff;
    background: linear-gradient(135deg, var(--em-500) 0%, var(--em-600) 100%);
    box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 8px 24px -6px rgba(5,150,105,.5);
}
.btn-emerald:hover {
    transform: translateY(-2px);
    box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 14px 32px -8px rgba(5,150,105,.55);
}
.btn-emerald.outline {
    color: var(--em-700);
    background: #fff;
    border-color: rgba(5,150,105,.35);
    box-shadow: var(--shadow-sm);
}
.btn-emerald.outline:hover {
    background: var(--em-50);
    border-color: var(--em-500);
    transform: translateY(-2px);
}

.btn-ghost {
    color: var(--ink-2);
    background: #fff;
    border-color: var(--line-2);
    box-shadow: var(--shadow-sm);
}
.btn-ghost:hover {
    border-color: var(--sky-300);
    color: var(--sky-700);
    transform: translateY(-2px);
}

/* =============================================================
   HERO
   ============================================================= */
.hero {
    position: relative;
    overflow: hidden;
    min-height: calc(100vh - var(--nav-h));
    min-height: calc(100svh - var(--nav-h));
    display: flex;
    align-items: center;
    padding: 56px 0 72px;
}

/* soft sky haze — light-theme take on the preview's atmo layers */
.hero-haze {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
    animation: haze-drift 22s ease-in-out infinite alternate;
}
.hero-haze.h1 { width: 46vw; height: 46vw; max-width: 640px; max-height: 640px; top: -18%; right: -8%; background: radial-gradient(circle, rgba(125,211,252,.45), transparent 65%); }
.hero-haze.h2 { width: 34vw; height: 34vw; max-width: 480px; max-height: 480px; bottom: -20%; left: -10%; background: radial-gradient(circle, rgba(186,230,253,.55), transparent 65%); animation-duration: 28s; animation-delay: -9s; }
.hero-haze.h3 { width: 22vw; height: 22vw; max-width: 320px; max-height: 320px; top: 30%; left: 40%; background: radial-gradient(circle, rgba(167,243,208,.30), transparent 65%); animation-duration: 20s; animation-delay: -14s; }

@keyframes haze-drift {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(3%, 5%) scale(1.06); }
    100% { transform: translate(-3%, 2%) scale(.96); }
}

#dustCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* ambient scan line (from preview) */
.hero-scanline {
    position: absolute;
    left: 0; right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, var(--sky-400) 50%, transparent 100%);
    opacity: 0;
    pointer-events: none;
    animation: scanline-sweep 12s linear infinite;
}
@keyframes scanline-sweep {
    0%   { top: 0;    opacity: 0; }
    5%   {            opacity: .28; }
    95%  {            opacity: .28; }
    100% { top: 100%; opacity: 0; }
}

.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.08fr 1fr;
    align-items: center;
    gap: 40px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 14px 7px 10px;
    border-radius: 999px;
    background: var(--sky-50);
    border: 1px solid var(--sky-100);
    color: var(--sky-700);
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .6px;
}
.eyebrow .dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--sky-500);
    box-shadow: 0 0 0 0 rgba(14,165,233,.6);
    animation: pulse-dot 2.4s ease infinite;
}
@keyframes pulse-dot {
    0%   { box-shadow: 0 0 0 0 rgba(14,165,233,.55); }
    70%  { box-shadow: 0 0 0 8px rgba(14,165,233,0); }
    100% { box-shadow: 0 0 0 0 rgba(14,165,233,0); }
}

.hero h1 {
    margin-top: 22px;
    font-family: var(--font-display);
    font-size: clamp(38px, 5.4vw, 68px);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -2px;
    color: var(--ink);
}
.hero h1 .accent {
    background: linear-gradient(120deg, var(--sky-400) 0%, var(--sky-600) 55%, var(--sky-700) 100%);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
}
.hero h1 .soft { color: var(--slate-400); font-weight: 600; }

.hero-sub {
    margin-top: 22px;
    max-width: 540px;
    font-size: clamp(16px, 1.4vw, 19px);
    line-height: 1.65;
    color: var(--slate-600);
}

.hero-ctas {
    margin-top: 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-trust {
    margin-top: 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    font-size: 13px;
    color: var(--slate-500);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { width: 16px; height: 16px; color: var(--sky-500); }

/* ── Breath gauge (light take on preview arc gauge) ── */
.gauge-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gauge-stage {
    position: relative;
    width: min(520px, 88vw);
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gauge-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.gauge-glow {
    position: absolute;
    top: 50%; left: 50%;
    width: 52%; height: 52%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(56,189,248,.35), rgba(186,230,253,.15) 55%, transparent 70%);
    filter: blur(30px);
    transform: translate(-50%, -50%);
    animation: glow-breathe 5.2s ease-in-out infinite;
    z-index: 0;
}
/* 5.2s ≈ one relaxed breath cycle */
@keyframes glow-breathe {
    0%, 100% { opacity: .55; transform: translate(-50%,-50%) scale(.88); }
    45%      { opacity: 1;   transform: translate(-50%,-50%) scale(1.08); }
}

.pulse-ring {
    position: absolute;
    top: 50%; left: 50%;
    border-radius: 50%;
    border: 1px solid var(--sky-400);
    opacity: 0;
    pointer-events: none;
    animation: ring-expand 5.2s ease-out infinite;
    z-index: 0;
}
.pulse-ring.r1 { width: 34%; height: 34%; animation-delay: 0s; }
.pulse-ring.r2 { width: 56%; height: 56%; animation-delay: 1.7s; }
.pulse-ring.r3 { width: 76%; height: 76%; animation-delay: 3.4s; }
@keyframes ring-expand {
    0%   { transform: translate(-50%,-50%) scale(.35); opacity: .55; }
    100% { transform: translate(-50%,-50%) scale(1);   opacity: 0; }
}

.gauge-center {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.gauge-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--slate-500);
}

.gauge-number {
    margin-top: 8px;
    font-family: var(--font-display);
    font-size: clamp(48px, 6.4vw, 86px);
    font-weight: 700;
    line-height: .95;
    letter-spacing: -3px;
    font-variant-numeric: tabular-nums;
    background: linear-gradient(180deg, var(--sky-500) 0%, var(--sky-700) 100%);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    filter: drop-shadow(0 8px 24px rgba(14,165,233,.25));
}

.gauge-status {
    margin-top: 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--sky-700);
}
.live {
    display: inline-block;
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--em-500);
    animation: pulse-live 2.4s ease infinite;
}
@keyframes pulse-live {
    0%   { box-shadow: 0 0 0 0 rgba(16,185,129,.55); }
    70%  { box-shadow: 0 0 0 7px rgba(16,185,129,0); }
    100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

/* rotating "invisible enemies" readout (from preview .hero-rotate-sensors) */
.rotator {
    position: relative;
    margin-top: 26px;
    width: 190px;
    height: 62px;
}
.rot-item {
    position: absolute;
    inset: 0 0 auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .6s ease, transform .6s var(--ease-out);
}
.rot-item.active { opacity: 1; transform: translateY(0); }
.rot-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--slate-400);
}
.rot-val {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.1;
    color: var(--ink-2);
}
.rot-unit { font-size: 11px; color: var(--slate-500); letter-spacing: .5px; }
.rot-progress {
    position: absolute;
    left: 20%; right: 20%;
    bottom: -12px;
    height: 2px;
    border-radius: 2px;
    background: var(--sky-100);
    overflow: hidden;
}
.rot-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--sky-400), var(--sky-600));
    transform-origin: left center;
}

.gauge-caption {
    margin-top: 6px;
    max-width: 380px;
    font-size: 12px;
    line-height: 1.55;
    color: var(--slate-400);
    text-align: center;
}

/* scroll cue */
.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 22px;
    z-index: 3;
    transform: translateX(-50%);
    width: 26px; height: 42px;
    border: 1.5px solid var(--line-2);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    transition: border-color .2s ease;
}
.scroll-cue:hover { border-color: var(--sky-400); }
.scroll-cue span {
    width: 3px; height: 8px; border-radius: 3px;
    background: var(--sky-500);
    animation: cue 1.8s ease-in-out infinite;
}
@keyframes cue {
    0%   { transform: translateY(0); opacity: 1; }
    80%  { transform: translateY(12px); opacity: 0; }
    100% { transform: translateY(0); opacity: 0; }
}

/* =============================================================
   STATS STRIP
   ============================================================= */
.stats {
    padding: 8px 0 40px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.stat {
    background: rgba(255,255,255,.92);
    padding: 30px 32px;
    transition: background .3s ease;
}
.stat:hover { background: #fff; }
.stat-num {
    font-family: var(--font-display);
    font-size: clamp(36px, 4vw, 52px);
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1;
    color: var(--sky-600);
    font-variant-numeric: tabular-nums;
}
.stat-text {
    margin-top: 10px;
    font-size: 15px;
    color: var(--ink-2);
    line-height: 1.5;
}
.stat-src {
    margin-top: 12px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--slate-400);
}

/* =============================================================
   SECTIONS — shared
   ============================================================= */
.section { padding: 110px 0; }
.section-tight { padding-top: 40px; }

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--sky-600);
}
.kicker::before {
    content: '';
    width: 28px; height: 1.5px;
    background: linear-gradient(90deg, var(--sky-500), transparent);
}

.section-title {
    margin-top: 14px;
    font-family: var(--font-display);
    font-size: clamp(30px, 3.6vw, 48px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1.2px;
    color: var(--ink);
}
.section-lead {
    margin-top: 18px;
    max-width: 640px;
    font-size: 17.5px;
    color: var(--slate-600);
}
.section-head { max-width: 760px; }
.section-head.center { margin: 0 auto; text-align: center; }
.section-head.center .section-lead { margin-left: auto; margin-right: auto; }

/* =============================================================
   WHAT IS AQI
   ============================================================= */
.aqi-intro {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 64px;
    align-items: center;
}

.analogy-list {
    margin-top: 30px;
    display: grid;
    gap: 14px;
    list-style: none;
}
.analogy-list li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    font-size: 15.5px;
    color: var(--ink-2);
}
.analogy-list .ic {
    flex-shrink: 0;
    width: 30px; height: 30px;
    border-radius: 9px;
    display: grid;
    place-items: center;
    background: var(--sky-50);
    color: var(--sky-600);
    border: 1px solid var(--sky-100);
}
.analogy-list .ic svg { width: 16px; height: 16px; }

.note {
    margin-top: 28px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: var(--sky-50);
    border: 1px solid var(--sky-100);
    font-size: 13.5px;
    color: var(--slate-600);
    line-height: 1.6;
}
.note strong { color: var(--sky-700); font-weight: 600; }

/* thermometer card */
.thermo-card {
    position: relative;
    padding: 36px 36px 32px;
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, #fff 0%, var(--sky-50) 100%);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 28px;
    align-items: stretch;
}
.thermo-title {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--slate-500);
}
.thermo-title b { font-family: var(--font-display); font-size: 13px; color: var(--sky-700); letter-spacing: 1px; }

.thermo {
    position: relative;
    width: 44px;
    height: 340px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.thermo-tube {
    position: relative;
    width: 18px;
    flex: 1;
    border-radius: 12px 12px 0 0;
    background: #fff;
    border: 1px solid var(--line-2);
    border-bottom: none;
    overflow: hidden;
}
.thermo-fill {
    position: absolute;
    left: 3px; right: 3px; bottom: 0;
    height: 0%;
    border-radius: 8px 8px 0 0;
    /* 0–500 proportional EPA bands, bottom → top */
    background: linear-gradient(to top,
        var(--aqi-good)      0%,  var(--aqi-good)      10%,
        var(--aqi-moderate)  10%, var(--aqi-moderate)  20%,
        var(--aqi-usg)       20%, var(--aqi-usg)       30%,
        var(--aqi-unhealthy) 30%, var(--aqi-unhealthy) 40%,
        var(--aqi-very)      40%, var(--aqi-very)      60%,
        var(--aqi-hazardous) 60%, var(--aqi-hazardous) 100%);
    background-size: 100% 300px;
    background-position: bottom;
    transition: height 2.2s var(--ease-out);
}
.thermo-card.in .thermo-fill { height: 100%; }
.thermo-bulb {
    width: 44px; height: 44px;
    margin-top: -4px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--line-2);
    display: grid;
    place-items: center;
}
.thermo-bulb::after {
    content: '';
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--aqi-good);
    box-shadow: 0 0 18px rgba(0,228,0,.45);
}

.thermo-scale {
    position: relative;
    height: 300px;
    margin-bottom: 40px; /* aligns with tube, not bulb */
}
.thermo-tick {
    position: absolute;
    left: 0; right: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(50%);
    font-size: 13px;
    color: var(--ink-2);
}
.thermo-tick .v {
    width: 34px;
    font-family: var(--font-display);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--slate-500);
}
.thermo-tick .sw {
    width: 10px; height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
}
.thermo-tick .lbl { font-weight: 500; }

/* =============================================================
   POLLUTANTS — "The Invisible Enemies"
   ============================================================= */
.pollutant-grid {
    margin-top: 56px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.p-card {
    position: relative;
    padding: 30px 28px 28px;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,.9);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform .35s var(--ease-out), box-shadow .35s ease, border-color .35s ease;
}
.p-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--p-col, var(--sky-500)), transparent 85%);
    opacity: .9;
}
.p-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--sky-100);
}
.p-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.p-badge {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1;
}
.p-badge sub { font-size: .5em; font-weight: 600; vertical-align: baseline; position: relative; top: .1em; margin-left: 1px; color: var(--slate-500); }
.p-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 10px;
    border-radius: 999px;
    background: var(--p-bg, var(--sky-50));
    color: var(--p-ink, var(--sky-700));
    white-space: nowrap;
}
.p-name {
    margin-top: 16px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-2);
}
.p-desc {
    margin-top: 8px;
    font-size: 14.5px;
    color: var(--slate-600);
    line-height: 1.65;
}
.p-meta {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--line-2);
    font-size: 12.5px;
    color: var(--slate-500);
}
.p-meta b { color: var(--ink-2); font-weight: 600; }

.p-pm25 { --p-col: var(--sky-500); --p-bg: var(--sky-50);  --p-ink: var(--sky-700); }
.p-pm10 { --p-col: #f59e0b;        --p-bg: #fffbeb;        --p-ink: #b45309; }
.p-co2  { --p-col: #8b5cf6;        --p-bg: #f5f3ff;        --p-ink: #6d28d9; }

/* size comparison — drawn to scale */
.size-compare {
    margin-top: 28px;
    padding: 30px 34px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: linear-gradient(135deg, #fff 0%, var(--sky-50) 100%);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 40px;
    align-items: center;
}
.size-visual {
    position: relative;
    width: 280px;
    height: 280px;
    flex-shrink: 0;
}
.size-visual .c {
    position: absolute;
    left: 50%;
    bottom: 0;
    border-radius: 50%;
    transform: translateX(-50%);
}
/* 4 px = 1 µm */
.size-visual .hair { width: 280px; height: 280px; background: radial-gradient(circle at 35% 30%, #fde7c7, #f2c99a 70%); border: 1px solid rgba(180,120,60,.25); }
.size-visual .pm10 { width: 40px;  height: 40px;  background: #fbbf24; bottom: 20px; box-shadow: 0 4px 14px rgba(245,158,11,.35); }
.size-visual .pm25 { width: 10px;  height: 10px;  background: var(--sky-600); bottom: 70px; box-shadow: 0 0 0 4px rgba(14,165,233,.18); }
.size-visual .tag {
    position: absolute;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .5px;
    color: var(--ink-2);
    white-space: nowrap;
}
.size-visual .tag.t-hair { top: 22%; left: 50%; transform: translateX(-50%); color: #8a5a2b; }
.size-visual .tag.t-pm10 { bottom: 30px; left: calc(50% + 30px); }
.size-visual .tag.t-pm25 { bottom: 66px; left: calc(50% + 14px); }

.size-copy h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -.5px;
}
.size-copy p { margin-top: 10px; color: var(--slate-600); font-size: 15.5px; max-width: 520px; }
.size-legend {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    list-style: none;
    font-size: 13.5px;
    color: var(--ink-2);
}
.size-legend li { display: inline-flex; align-items: center; gap: 8px; }
.size-legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.size-foot { margin-top: 14px; font-size: 12px; color: var(--slate-400); }

/* =============================================================
   COLOUR SCALE
   ============================================================= */
.scale-cards {
    margin-top: 56px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.s-card {
    position: relative;
    padding: 30px 28px;
    border-radius: var(--radius-md);
    background: var(--s-bg);
    border: 1px solid var(--s-bd);
    overflow: hidden;
    transition: transform .35s var(--ease-out), box-shadow .35s ease;
}
.s-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -20px var(--s-sh); }
.s-card::after {
    content: '';
    position: absolute;
    width: 180px; height: 180px;
    right: -60px; top: -60px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--s-glow), transparent 70%);
    pointer-events: none;
}
.s-top { display: flex; align-items: center; gap: 12px; }
.s-dot {
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--s-col);
    box-shadow: 0 0 0 5px var(--s-ring);
}
.s-range {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--s-ink);
}
.s-name {
    margin-top: 20px;
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -.8px;
    line-height: 1.1;
    color: var(--ink);
}
.s-sub {
    margin-top: 4px;
    font-size: 14px;
    font-weight: 600;
    color: var(--s-ink);
}
.s-desc { margin-top: 14px; font-size: 14.5px; color: var(--slate-600); line-height: 1.6; }

.s-good     { --s-col: var(--aqi-good);     --s-ink: var(--aqi-good-ink);     --s-bg: #f3fdf3; --s-bd: #c9f2c9; --s-ring: rgba(0,228,0,.16);  --s-glow: rgba(0,228,0,.14);  --s-sh: rgba(0,160,0,.35); }
.s-moderate { --s-col: var(--aqi-moderate); --s-ink: var(--aqi-moderate-ink); --s-bg: #fffde8; --s-bd: #f5ec9b; --s-ring: rgba(234,200,0,.22); --s-glow: rgba(255,230,0,.22); --s-sh: rgba(200,170,0,.35); }
.s-action   { --s-col: var(--aqi-usg);      --s-ink: var(--aqi-usg-ink);      --s-bg: #fff6ee; --s-bd: #fed7b0; --s-ring: rgba(255,126,0,.16); --s-glow: rgba(255,126,0,.16); --s-sh: rgba(255,110,0,.35); }

/* interactive full EPA scale */
.scale-lab {
    margin-top: 28px;
    padding: 32px 34px 30px;
    border-radius: var(--radius-lg);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-md);
}
.lab-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.lab-head h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -.3px;
}
.lab-head p { font-size: 13.5px; color: var(--slate-500); margin-top: 4px; }

.lab-readout {
    display: flex;
    align-items: baseline;
    gap: 14px;
    text-align: right;
}
.lab-val {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: var(--lab-ink, var(--aqi-good-ink));
    transition: color .3s ease;
    min-width: 2.4ch;
}
.lab-cat {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--lab-ink, var(--aqi-good-ink));
    transition: color .3s ease;
}

.lab-bar-wrap { position: relative; margin-top: 26px; }
.lab-bar {
    display: flex;
    height: 14px;
    border-radius: 999px;
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(15,23,42,.06);
}
.lab-bar span { display: block; height: 100%; }

.lab-slider {
    position: absolute;
    inset: -12px 0;
    width: 100%;
    height: 38px;
    -webkit-appearance: none;
            appearance: none;
    background: transparent;
    cursor: pointer;
    margin: 0;
}
.lab-slider:focus { outline: none; }
.lab-slider::-webkit-slider-runnable-track { height: 38px; background: transparent; }
.lab-slider::-moz-range-track { height: 38px; background: transparent; }
.lab-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 30px; height: 30px;
    margin-top: 4px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--lab-col, var(--aqi-good));
    box-shadow: 0 4px 14px rgba(15,23,42,.22), 0 0 0 6px rgba(255,255,255,.7);
    transition: transform .2s var(--ease-out), border-color .2s ease;
}
.lab-slider::-moz-range-thumb {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--lab-col, var(--aqi-good));
    box-shadow: 0 4px 14px rgba(15,23,42,.22);
}
.lab-slider:hover::-webkit-slider-thumb,
.lab-slider:focus-visible::-webkit-slider-thumb { transform: scale(1.12); }
.lab-slider:focus-visible::-webkit-slider-thumb { box-shadow: 0 4px 14px rgba(15,23,42,.22), 0 0 0 6px var(--sky-200); }

.lab-ticks {
    position: relative;
    height: 22px;
    margin-top: 12px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--slate-400);
    font-variant-numeric: tabular-nums;
}
.lab-ticks span { position: absolute; transform: translateX(-50%); }
.lab-ticks span:first-child { transform: none; }
.lab-ticks span:last-child { transform: translateX(-100%); }

.lab-legend {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
}
.lab-legend button {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    cursor: pointer;
    text-align: left;
    transition: border-color .2s ease, background .2s ease, transform .2s var(--ease-out);
}
.lab-legend button:hover { transform: translateY(-2px); border-color: var(--line-2); }
.lab-legend button.on { border-color: var(--lg-col); background: var(--lg-bg); }
.lab-legend .lg-top { display: flex; align-items: center; gap: 7px; font-size: 11.5px; font-weight: 700; color: var(--slate-500); font-variant-numeric: tabular-nums; }
.lab-legend .lg-top i { width: 9px; height: 9px; border-radius: 50%; background: var(--lg-col); display: inline-block; }
.lab-legend .lg-name { font-size: 12.5px; font-weight: 600; color: var(--ink-2); line-height: 1.3; }

.lab-msg {
    margin-top: 20px;
    padding: 16px 18px;
    border-radius: var(--radius-sm);
    background: var(--lab-bg, #f3fdf3);
    border-left: 3px solid var(--lab-col, var(--aqi-good));
    font-size: 14.5px;
    color: var(--ink-2);
    min-height: 56px;
    transition: background .3s ease, border-color .3s ease;
}
.lab-msg small { display: block; margin-top: 6px; font-size: 11.5px; color: var(--slate-400); letter-spacing: .3px; }

/* =============================================================
   PIVOT — O2Cure
   ============================================================= */
.pivot {
    position: relative;
    border-radius: 36px;
    padding: 80px 64px;
    overflow: hidden;
    background:
        radial-gradient(700px 360px at 0% 0%, rgba(186,230,253,.65), transparent 60%),
        radial-gradient(600px 360px at 100% 100%, rgba(167,243,208,.55), transparent 60%),
        linear-gradient(180deg, #ffffff 0%, #f8fcff 100%);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
}
.pivot-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 56px;
    align-items: center;
}
.pivot-step {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.pivot-step span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .4px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--slate-500);
}
.pivot-step span.done { color: var(--sky-700); border-color: var(--sky-100); background: var(--sky-50); }
.pivot-step span.next { color: var(--em-700);  border-color: var(--em-100);  background: var(--em-50); }
.pivot-step svg { width: 14px; height: 14px; }

.pivot h2 {
    margin-top: 22px;
    font-family: var(--font-display);
    font-size: clamp(32px, 3.8vw, 52px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -1.5px;
}
.pivot h2 .em {
    background: linear-gradient(120deg, var(--em-500), var(--em-700));
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
}
.pivot-copy {
    margin-top: 22px;
    font-size: 18px;
    line-height: 1.7;
    color: var(--slate-600);
    max-width: 560px;
}
.pivot-copy strong { color: var(--ink); font-weight: 600; }
.pivot-ctas { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }

/* mini monitor mock (mirrors preview indoor / outdoor + comparison card) */
.monitor {
    position: relative;
    padding: 26px;
    border-radius: 26px;
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.9);
    box-shadow: 0 30px 60px -24px rgba(15,23,42,.25), 0 0 0 1px var(--line);
    animation: float 7s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}
.monitor-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--slate-400);
}
.monitor-top .pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 9px;
    border-radius: 999px;
    background: var(--sky-50);
    color: var(--sky-700);
    letter-spacing: 1px;
}
.monitor-rings {
    margin-top: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.m-ring {
    position: relative;
    aspect-ratio: 1;
    border-radius: 50%;
    display: grid;
    place-items: center;
    /* 270° gauge: start at 225deg (bottom-left), fill --deg of 270 */
    background:
        conic-gradient(from 225deg, var(--m-col) 0deg, var(--m-col) var(--deg), rgba(15,23,42,.07) var(--deg), rgba(15,23,42,.07) 270deg, transparent 270deg);
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 6px));
            mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 6px));
}
.m-ring-wrap { position: relative; }
.m-ring-text {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.m-ring-text .k { font-size: 9.5px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--slate-400); }
.m-ring-text .n { font-family: var(--font-display); font-size: 34px; font-weight: 700; letter-spacing: -1px; line-height: 1.05; color: var(--m-ink); }
.m-ring-text .s { font-size: 10.5px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--m-ink); }

.m-compare {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 15px;
    border-radius: 16px;
    background: var(--em-50);
    border: 1px solid var(--em-100);
    font-size: 13.5px;
    color: var(--ink-2);
}
.m-compare svg { width: 22px; height: 22px; color: var(--em-600); flex-shrink: 0; }
.m-compare strong { color: var(--em-700); }

.m-sensors {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.m-sensors div {
    padding: 10px 8px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid var(--line);
    text-align: center;
}
.m-sensors .k { font-size: 9.5px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--slate-400); }
.m-sensors .v { font-family: var(--font-display); font-size: 18px; font-weight: 600; color: var(--ink-2); line-height: 1.2; }
.m-sensors .u { font-size: 10px; color: var(--slate-400); }
.monitor-foot { margin-top: 12px; font-size: 11px; color: var(--slate-400); text-align: center; }

/* =============================================================
   FOOTER
   ============================================================= */
.site-footer {
    margin-top: 40px;
    padding: 56px 0 40px;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(240,249,255,0) 0%, var(--sky-50) 100%);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.1fr 1.4fr .8fr;
    gap: 48px;
}
.footer-brand img { height: 56px; width: auto; }
.footer-brand p { margin-top: 14px; font-size: 14px; color: var(--slate-500); max-width: 320px; }
.footer-h {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--slate-400);
}
.footer-list { margin-top: 14px; list-style: none; display: grid; gap: 10px; }
.footer-list a {
    font-size: 14px;
    color: var(--slate-600);
    transition: color .2s ease;
}
.footer-list a:hover { color: var(--sky-700); }
.footer-list .src { display: block; font-size: 12px; color: var(--slate-400); }
.footer-bottom {
    margin-top: 44px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 12.5px;
    color: var(--slate-400);
}

/* =============================================================
   FLOATING WHATSAPP (vanilla equivalent of the Tailwind snippet:
   fixed bottom-6 right-6 bg-[#25D366] p-4 rounded-full shadow-lg
   hover:bg-[#1ebd57] hover:scale-105 duration-300 z-50, w-7 h-7)
   ============================================================= */
.wa-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    border-radius: 999px;
    background: #25D366;
    color: #fff;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
    transition: all .3s ease;
}
.wa-float:hover { background: #1ebd57; transform: scale(1.05); }
.wa-float:focus-visible { outline: 3px solid rgba(37,211,102,.45); outline-offset: 3px; }
.wa-float svg { width: 28px; height: 28px; }
.wa-float .wa-tip {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translate(6px, -50%);
    padding: 8px 12px;
    border-radius: 10px;
    background: var(--ink);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s var(--ease-out);
}
.wa-float:hover .wa-tip { opacity: 1; transform: translate(0, -50%); }

/* =============================================================
   SCROLL REVEAL (only when JS is running)
   ============================================================= */
.js .reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
    transition-delay: var(--d, 0s);
}
.js .reveal.in { opacity: 1; transform: none; }

.hero-anim > * { animation: fade-up .9s var(--ease-out) both; }
.hero-anim > *:nth-child(2) { animation-delay: .08s; }
.hero-anim > *:nth-child(3) { animation-delay: .16s; }
.hero-anim > *:nth-child(4) { animation-delay: .24s; }
.hero-anim > *:nth-child(5) { animation-delay: .32s; }
.gauge-wrap { animation: gauge-in 1.1s .15s var(--ease-out) both; }

@keyframes fade-up {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: none; }
}
@keyframes gauge-in {
    from { opacity: 0; transform: scale(.94); }
    to   { opacity: 1; transform: none; }
}

/* =============================================================
   RESPONSIVE
   ============================================================= */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-ctas, .hero-trust { justify-content: center; }
    .gauge-stage { width: min(440px, 86vw); }
    .aqi-intro { grid-template-columns: 1fr; gap: 44px; }
    .pivot { padding: 56px 36px; }
    .pivot-grid { grid-template-columns: 1fr; gap: 44px; }
    .monitor { max-width: 440px; margin: 0 auto; width: 100%; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
    .nav-links { display: none; }
    .brand-divider, .brand-sub { display: none; }
    .stats-grid { grid-template-columns: 1fr; }
    .pollutant-grid, .scale-cards { grid-template-columns: 1fr; }
    .size-compare { grid-template-columns: 1fr; justify-items: center; text-align: center; padding: 28px 22px; }
    .size-copy p { margin-left: auto; margin-right: auto; }
    .size-legend { justify-content: center; }
    .lab-legend { grid-template-columns: repeat(3, 1fr); }
    .section { padding: 80px 0; }
    .hero { padding-top: 36px; }
}

@media (max-width: 560px) {
    .container { padding: 0 20px; }
    .hero h1 { letter-spacing: -1.2px; }
    .btn { width: 100%; }
    .nav-actions .btn { width: auto; }
    .hero-trust { gap: 12px 18px; }
    .lab-head { flex-direction: column; align-items: flex-start; }
    .lab-readout { text-align: left; }
    .lab-legend { grid-template-columns: repeat(2, 1fr); }
    .scale-lab { padding: 24px 20px; }
    .thermo-card { padding: 26px 22px; gap: 18px; }
    .size-visual { transform: scale(.85); margin: -20px 0; }
    .pivot { padding: 44px 22px; border-radius: 28px; }
    .footer-grid { grid-template-columns: 1fr; }
    .scroll-cue { display: none; }
    .wa-float { right: 16px; bottom: 16px; }
}

/* =============================================================
   REDUCED MOTION
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
    .hero-scanline, .pulse-ring { display: none; }
    .js .reveal { opacity: 1; transform: none; }
}