/* ========================================
   INSTALLATION GUIDE PAGE STYLES
   Editorial, hairline-separated layout.
   Mobile-first, Monsoon Mist theme tokens.
   Prefixes: ig- hero · st- setup steps ·
   bp- placement · tc- touch controls ·
   gh- google home · fc- filter care ·
   ih- help band
======================================== */

/* ========================================
   SCROLL REVEAL
======================================== */
.will-reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.will-reveal.is-revealed {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .will-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ========================================
   HERO SECTION
======================================== */
.ig-hero {
    min-height: 100vh;
    background: var(--mist);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 104px 20px 56px;
    box-sizing: border-box;
}

.ig-hero-inner {
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Eyebrow label */
.ig-hero-eyebrow {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--teal-deep);
    margin: 0 0 18px;
}

/* Headline */
.ig-hero-headline {
    font-family: 'Outfit', sans-serif;
    font-size: 2.4rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.18;
    letter-spacing: -0.01em;
    margin: 0 0 16px;
}

/* Italic accent — Playfair Display, matches site pattern */
.ig-hero-headline .italic,
.st-headline .italic,
.st-closing .italic,
.bp-headline .italic,
.tc-headline .italic,
.gh-headline .italic,
.fc-headline .italic,
.ih-headline .italic {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
}

/* Description */
.ig-hero-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0 0 36px;
}

/* Product image with soft halo */
.ig-hero-image-wrap {
    position: relative;
    margin-bottom: 36px;
}

.ig-hero-halo {
    position: absolute;
    inset: -15% -30%;
    background: radial-gradient(closest-side, rgba(30, 124, 113, 0.12), transparent 72%);
    pointer-events: none;
}

.ig-hero-image {
    position: relative;
    width: 220px;
    height: auto;
    display: block;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(24px);
    animation: ig-image-appear 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.15s forwards;
}

@keyframes ig-image-appear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .ig-hero-image {
        opacity: 1;
        transform: none;
        animation: none;
    }
}

/* 3-step indicator — hairline-framed band */
.ig-hero-steps {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
    padding: 14px 0;
    border-top: 1px solid var(--ink-line);
    border-bottom: 1px solid var(--ink-line-soft);
    width: 100%;
}

.ig-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.ig-step-num {
    font-family: 'Outfit', sans-serif;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--teal-deep);
    line-height: 1;
}

.ig-step-label {
    font-family: 'Outfit', sans-serif;
    font-size: 0.74rem;
    font-weight: 400;
    color: var(--ink-soft);
    letter-spacing: 0.01em;
    text-align: center;
}

.ig-step-divider {
    width: 1px;
    align-self: stretch;
    background: var(--ink-line-soft);
    flex-shrink: 0;
}

/* CTA area */
.ig-hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

/* Primary button — dark solid, pill shape */
.ig-hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--on-ink);
    background: var(--ink);
    border: none;
    border-radius: 9999px;
    padding: 14px 30px;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.ig-hero-btn svg {
    width: 15px;
    height: 15px;
    transition: transform 0.2s ease;
}

.ig-hero-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--shadow-tint-md);
}

.ig-hero-btn:hover svg {
    transform: translateY(2px);
}

.ig-hero-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Helper text */
.ig-hero-helper {
    font-family: 'Outfit', sans-serif;
    font-size: 0.78rem;
    font-weight: 400;
    color: var(--ink-soft);
    margin: 0;
}

@media (min-width: 640px) {
    .ig-hero {
        padding: 112px 32px 64px;
    }

    .ig-hero-headline {
        font-size: 3rem;
    }

    .ig-hero-image {
        width: 260px;
    }

    .ig-step-label {
        font-size: 0.78rem;
    }
}

@media (min-width: 1024px) {
    .ig-hero {
        padding: 120px 48px 72px;
    }

    .ig-hero-inner {
        max-width: 620px;
    }

    .ig-hero-headline {
        font-size: 3.6rem;
    }

    .ig-hero-image {
        width: 300px;
    }
}

/* ========================================
   SETUP STEPS — COMPACT FILMSTRIP
======================================== */
.st-section {
    background: var(--mist);
    border-top: 1px solid var(--ink-line-soft);
    padding: 72px 20px 72px;
}

.st-container {
    max-width: 1080px;
    margin: 0 auto;
}

/* ---- Header ---- */
.st-header {
    margin-bottom: 40px;
}

.st-eyebrow,
.bp-eyebrow,
.tc-eyebrow,
.fc-eyebrow {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--teal-deep);
    margin: 0 0 14px;
}

.st-headline,
.bp-headline,
.tc-headline,
.fc-headline {
    font-family: 'Outfit', sans-serif;
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
}

.st-desc,
.bp-desc,
.tc-desc,
.fc-subtext {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0;
    max-width: 480px;
}

/* ---- Filmstrip track ---- */
.st-track {
    list-style: none;
    margin: 0 -20px;
    padding: 0 20px;
    display: flex;
    gap: 28px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-left: 20px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.st-track::-webkit-scrollbar {
    display: none;
}

.st-step {
    position: relative;
    flex: 0 0 76%;
    max-width: 320px;
    scroll-snap-align: start;
    padding-top: 26px;
}

/* Connector rail: hairline that draws in + dot */
.st-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: -28px; /* bridge the gap to the next step */
    height: 1px;
    background: var(--ink-line);
    transform-origin: left;
    transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.st-step:last-child::before {
    right: 0;
}

.st-step::after {
    content: '';
    position: absolute;
    top: -3.5px;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 9999px;
    background: var(--teal-deep);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Sequential draw, keyed off the track's reveal state */
.st-step:nth-child(1)::before { transition-delay: 0.05s; }
.st-step:nth-child(2)::before { transition-delay: 0.35s; }
.st-step:nth-child(3)::before { transition-delay: 0.65s; }
.st-step:nth-child(1)::after { transition-delay: 0.05s; }
.st-step:nth-child(2)::after { transition-delay: 0.4s; }
.st-step:nth-child(3)::after { transition-delay: 0.75s; }

.st-track.will-reveal:not(.is-revealed) .st-step::before {
    transform: scaleX(0);
}

.st-track.will-reveal:not(.is-revealed) .st-step::after {
    opacity: 0;
    transform: scale(0.4);
}

/* Illustration */
.st-step-media {
    margin-bottom: 6px;
}

.st-illus {
    width: 96px;
    height: 96px;
    display: block;
    color: var(--ink);
}

.st-illus-accent {
    stroke: var(--teal-deep);
}

.st-illus-accent-fill {
    stroke: none;
    fill: var(--teal-deep);
}

/* Meta row */
.st-step-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.st-step-num {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal-deep);
}

.st-step-time {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--ink-faint);
    letter-spacing: 0.02em;
}

.st-step-time svg {
    width: 12px;
    height: 12px;
}

.st-step-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 8px;
}

.st-step-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0;
}

/* Closing line */
.st-closing {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.5;
    margin: 44px 0 0;
    padding-top: 28px;
    border-top: 1px solid var(--ink-line-soft);
    text-align: center;
}

.st-closing .italic {
    font-size: 1.12em;
}

@media (min-width: 640px) {
    .st-section {
        padding: 88px 32px 88px;
    }

    .st-headline,
    .bp-headline,
    .tc-headline,
    .fc-headline {
        font-size: 2.25rem;
    }

    .st-track {
        margin: 0;
        padding: 0;
        overflow: visible;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }

    .st-step {
        flex: none;
        max-width: none;
        padding-top: 30px;
    }

    .st-step::before {
        right: -40px;
    }

    .st-step:last-child::before {
        right: 0;
    }

    .st-illus {
        width: 108px;
        height: 108px;
    }
}

@media (min-width: 1024px) {
    .st-section {
        padding: 104px 48px 96px;
    }

    .st-track {
        gap: 56px;
    }

    .st-step::before {
        right: -56px;
    }

    .st-step:last-child::before {
        right: 0;
    }

    .st-illus {
        width: 120px;
        height: 120px;
    }

    .st-step-title {
        font-size: 1.3rem;
    }
}

/* ========================================
   BEDROOM PLACEMENT — LIVE FLOOR PLAN
======================================== */
.bp-section {
    background: var(--mist-deep);
    padding: 64px 20px 72px;
    border-top: 1px solid var(--ink-line-soft);
}

.bp-container {
    max-width: 1020px;
    margin: 0 auto;
}

.bp-header {
    margin-bottom: 28px;
}

/* ---- Stage: diagram + tabs ---- */
.bp-stage {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.bp-diagram-wrap {
    width: 100%;
    max-width: 480px;
}

.bp-diagram {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    border: 1px solid var(--ink-line-soft);
    background: #F3F8F4;
    box-shadow: 0 6px 28px var(--shadow-tint-sm);
}

/* ---- Diagram states ---- */
.bpd-ghost,
.bpd-zone,
.bpd-flow-x,
.bpd-clearance {
    opacity: 0;
    transition: opacity 0.45s ease;
    pointer-events: none;
}

.bpd-flow-base {
    transition: opacity 0.45s ease;
}

.bp-diagram-wrap[data-state="1"] .bpd-clearance { opacity: 1; }

.bp-diagram-wrap[data-state="2"] .bpd-flow-base,
.bp-diagram-wrap[data-state="3"] .bpd-flow-base { opacity: 0.15; }
.bp-diagram-wrap[data-state="4"] .bpd-flow-base { opacity: 1; }

.bp-diagram-wrap[data-state="2"] .bpd-ghost { opacity: 1; }
.bp-diagram-wrap[data-state="3"] .bpd-zone { opacity: 1; }
.bp-diagram-wrap[data-state="4"] .bpd-flow-x { opacity: 1; }

/* Clearance ring pulses gently when its rule is active */
.bpd-clearance-ring {
    transform-box: fill-box;
    transform-origin: center;
}

.bp-diagram-wrap[data-state="1"] .bpd-clearance-ring {
    animation: bpd-pulse 2.2s ease-in-out infinite;
}

@keyframes bpd-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.035); }
}

/* Airflow paths march when circulation rule is active */
.bp-diagram-wrap[data-state="4"] .bpd-flow-line {
    animation: bpd-flow 1.4s linear infinite;
}

@keyframes bpd-flow {
    to { stroke-dashoffset: -48; }
}

@media (prefers-reduced-motion: reduce) {
    .bp-diagram-wrap[data-state="1"] .bpd-clearance-ring,
    .bp-diagram-wrap[data-state="4"] .bpd-flow-line {
        animation: none;
    }
}

/* ---- Rule tabs ---- */
.bp-panel {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 480px;
}

.bp-tabs {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.bp-tab {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 10px 14px;
    margin: 0;
    background: none;
    border: none;
    border-radius: 10px;
    text-align: left;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.25s ease;
}

.bp-tab:hover,
.bp-tab.is-active {
    background: var(--teal-tint-soft);
}

.bp-tab-num {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--teal-deep);
    flex-shrink: 0;
    min-width: 22px;
}

.bp-tab-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.94rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
}

.bp-tab.is-active .bp-tab-title {
    color: var(--teal-deep);
}

/* Shared caption for the active rule */
.bp-caption {
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    min-height: 44px;
    margin: 14px 0 0;
    padding: 14px 14px 0;
    border-top: 1px solid var(--ink-line);
}

/* ---- Marker interactivity (JS-controlled) ---- */
.bp-marker {
    cursor: pointer;
}

.bp-marker circle:first-child,
.bp-marker text {
    transition: fill 0.2s ease;
}

.bp-marker.is-active circle:first-child {
    fill: var(--teal-deep);
}

@media (min-width: 640px) {
    .bp-section {
        padding: 80px 32px 88px;
    }

    .bp-diagram-wrap {
        max-width: 520px;
    }
}

@media (min-width: 1024px) {
    .bp-section {
        padding: 88px 48px 96px;
    }

    .bp-stage {
        flex-direction: row;
        align-items: center;
        gap: 72px;
    }

    .bp-diagram-wrap {
        flex: 0 0 50%;
        max-width: none;
    }

    .bp-panel {
        flex: 1;
        max-width: 400px;
    }
}

/* ========================================
   TOUCH CONTROLS — HEXAGONAL PANEL REPLICA
======================================== */
.tc-section {
    background: var(--mist);
    padding: 64px 20px 72px;
    border-top: 1px solid var(--ink-line-soft);
}

.tc-container {
    max-width: 1000px;
    margin: 0 auto;
}

.tc-header {
    margin-bottom: 36px;
}

/* ---- Stage ---- */
.tc-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 22px;
}

/* ---- Hexagonal panel ---- */
.tc-hex {
    position: relative;
    width: 300px;
    aspect-ratio: 400 / 460;
}

.tc-hex-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 22px 44px var(--shadow-tint-md));
}

/* Center wordmark */
.tc-hex-logo {
    position: absolute;
    left: 50%;
    top: 49.5%;
    transform: translate(-50%, -50%);
    width: 33%;
    height: auto;
    filter: brightness(0) invert(1);
    opacity: 0.96;
    pointer-events: none;
    user-select: none;
}

/* ---- Keys ---- */
.tc-key {
    position: absolute;
    left: var(--x);
    top: var(--y);
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    width: 56px;
    min-height: 44px;
    margin: 0;
    padding: 6px 0;
    background: none;
    border: none;
    color: rgba(247, 250, 248, 0.88);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: color 0.25s ease, filter 0.25s ease, opacity 0.25s ease;
}

.tc-key svg {
    width: 27px;
    height: 27px;
}

.tc-key:hover {
    color: #FFFFFF;
}

.tc-key[aria-pressed="true"] {
    color: var(--teal-brand);
    filter: drop-shadow(0 0 7px rgba(63, 183, 172, 0.85));
}

/* Focus ring adapted to dark panel */
.tc-key:focus-visible {
    outline: 2px solid var(--teal-brand);
    outline-offset: 2px;
    border-radius: 10px;
}

/* Speed / timer indicator dashes */
.tc-ind {
    display: flex;
    gap: 5px;
    align-items: center;
}

.tc-ind i {
    display: block;
    width: 13px;
    height: 2.5px;
    border-radius: 9999px;
    background: currentColor;
    opacity: 0.32;
}

.tc-ind i.is-on {
    opacity: 1;
}

/* Timer hour numerals */
.tc-ind-nums {
    display: flex;
    gap: 10px;
    margin-top: -2px;
}

.tc-ind-nums em {
    font-family: 'Outfit', sans-serif;
    font-style: normal;
    font-size: 0.55rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.02em;
    width: 13px;
    text-align: center;
}

/* ---- Dynamic caption ---- */
.tc-caption {
    display: flex;
    align-items: baseline;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 24px;
    margin: 0;
    text-align: center;
}

.tc-caption-label {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
}

.tc-caption-sep {
    width: 22px;
    height: 1px;
    background: var(--ink-line);
    align-self: center;
}

.tc-caption-sub {
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.5;
}

.tc-hint {
    font-family: 'Outfit', sans-serif;
    font-size: 0.74rem;
    font-weight: 400;
    color: var(--ink-faint);
    letter-spacing: 0.03em;
    margin: -8px 0 0;
}

@media (min-width: 640px) {
    .tc-section {
        padding: 80px 32px 88px;
    }

    .tc-hex {
        width: 360px;
    }

    .tc-key svg {
        width: 30px;
        height: 30px;
    }

    .tc-ind i {
        width: 15px;
    }

    .tc-ind-nums em {
        width: 15px;
        font-size: 0.6rem;
    }
}

@media (min-width: 1024px) {
    .tc-section {
        padding: 96px 48px 104px;
    }

    .tc-hex {
        width: 400px;
    }

    .tc-key svg {
        width: 33px;
        height: 33px;
    }

    .tc-ind i {
        width: 16px;
    }

    .tc-ind-nums em {
        width: 16px;
    }
}

/* ========================================
   GOOGLE HOME — PHONE SCROLLYTELLING
======================================== */
.gh-section {
    background: var(--ink);
    padding: 76px 20px 84px;
}

.gh-container {
    max-width: 1080px;
    margin: 0 auto;
}

/* ---- Header ---- */
.gh-head {
    margin-bottom: 44px;
}

.gh-eyebrow {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(234, 240, 236, 0.5);
    margin: 0 0 14px;
}

.gh-headline {
    font-family: 'Outfit', sans-serif;
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--on-ink);
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
}

.gh-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    color: rgba(234, 240, 236, 0.6);
    line-height: 1.6;
    margin: 0;
    max-width: 480px;
}

/* ---- Layout: sticky phone + steps ---- */
.gh-layout {
    display: flex;
    flex-direction: column;
    margin-bottom: 48px;
}

.gh-phone-col {
    position: sticky;
    top: 76px;
    z-index: 2;
    display: flex;
    justify-content: center;
    padding: 8px 0 20px;
    background: linear-gradient(to bottom, var(--ink) 82%, transparent);
}

/* Phone frame */
.gh-phone {
    position: relative;
    width: 218px;
    height: 290px;
    background: #1B1D1F;
    border: 1px solid rgba(234, 240, 236, 0.14);
    border-radius: 28px;
    padding: 10px;
    box-sizing: border-box;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.gh-phone-notch {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 54px;
    height: 5px;
    border-radius: 9999px;
    background: rgba(234, 240, 236, 0.14);
    z-index: 2;
}

/* Screen stack */
.gh-screens {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 19px;
    overflow: hidden;
    background: var(--paper);
}

.gh-screen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 26px 16px 16px;
    box-sizing: border-box;
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.45s ease, transform 0.45s ease;
    pointer-events: none;
}

.gh-screens[data-screen="1"] .gh-screen[data-screen="1"],
.gh-screens[data-screen="2"] .gh-screen[data-screen="2"],
.gh-screens[data-screen="3"] .gh-screen[data-screen="3"],
.gh-screens[data-screen="4"] .gh-screen[data-screen="4"] {
    opacity: 1;
    transform: none;
}

/* Screen typography */
.gh-scr-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin: 0;
}

.gh-scr-hint {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--ink-soft);
    text-align: center;
    line-height: 1.45;
    margin: 0;
}

/* Screen 1: mini purifier panel */
.gh-scr-panel {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--device-black);
    border-radius: 9999px;
    padding: 10px 14px;
}

.gh-scr-key {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.5);
}

.gh-scr-key svg {
    width: 14px;
    height: 14px;
}

.gh-scr-key.is-lit {
    color: var(--teal-brand);
    background: rgba(63, 183, 172, 0.14);
    box-shadow: 0 0 12px rgba(63, 183, 172, 0.4);
    animation: gh-key-pulse 1.8s ease-in-out infinite;
}

@keyframes gh-key-pulse {
    0%, 100% { box-shadow: 0 0 6px rgba(63, 183, 172, 0.25); }
    50% { box-shadow: 0 0 16px rgba(63, 183, 172, 0.55); }
}

@media (prefers-reduced-motion: reduce) {
    .gh-scr-key.is-lit {
        animation: none;
    }
}

/* Screen 2: Wi-Fi list */
.gh-scr-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gh-scr-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: var(--mist);
    border: 1px solid var(--ink-line-soft);
    border-radius: 10px;
    padding: 9px 12px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--ink-soft);
}

.gh-scr-row svg {
    width: 13px;
    height: 13px;
    color: var(--ink-faint);
    flex-shrink: 0;
}

.gh-scr-row.is-hot {
    background: var(--teal-tint);
    border-color: rgba(30, 124, 113, 0.3);
    color: var(--teal-deep);
    font-weight: 600;
}

.gh-scr-row.is-hot svg {
    color: var(--teal-deep);
}

/* Screen 3: form */
.gh-scr-field {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 3px;
    background: var(--mist);
    border: 1px solid var(--ink-line-soft);
    border-radius: 10px;
    padding: 8px 12px;
    box-sizing: border-box;
}

.gh-scr-fl {
    font-family: 'Outfit', sans-serif;
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

.gh-scr-fv {
    font-family: 'Outfit', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--ink);
}

.gh-scr-btn {
    font-family: 'Outfit', sans-serif;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--on-teal);
    background: var(--teal-deep);
    border-radius: 9999px;
    padding: 8px 22px;
    margin-top: 2px;
}

/* Screen 4: Google Home device */
.gh-scr-devwrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.gh-scr-devicon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--teal-tint);
    color: var(--teal-deep);
}

.gh-scr-devicon svg {
    width: 24px;
    height: 24px;
}

.gh-scr-devname {
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink);
    margin: 0;
}

.gh-scr-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--success);
    background: var(--success-tint);
    border-radius: 9999px;
    padding: 4px 11px;
}

.gh-scr-status svg {
    width: 11px;
    height: 11px;
}

/* ---- Steps ---- */
.gh-steps {
    list-style: none;
    margin: 0;
    padding: 0;
}

.gh-step {
    padding: 36px 0;
    border-top: 1px solid rgba(234, 240, 236, 0.14);
    transition: opacity 0.4s ease;
}

.gh-steps.is-live .gh-step {
    opacity: 0.38;
}

.gh-steps.is-live .gh-step.is-active {
    opacity: 1;
}

.gh-step-num {
    display: block;
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--teal-on-dark);
    margin-bottom: 12px;
}

.gh-step-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--on-ink);
    line-height: 1.35;
    margin: 0 0 8px;
}

.gh-step-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 400;
    color: rgba(234, 240, 236, 0.58);
    line-height: 1.6;
    margin: 0;
    max-width: 380px;
}

/* Network name inline highlight */
.gh-network-name {
    font-family: 'Outfit', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(79, 196, 184, 0.12);
    color: var(--teal-on-dark);
    padding: 1px 7px;
    border-radius: 5px;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

/* ---- Footer row: app buttons ---- */
.gh-footer {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid rgba(234, 240, 236, 0.14);
}

.gh-footer-label {
    font-family: 'Outfit', sans-serif;
    font-size: 0.8rem;
    font-weight: 400;
    color: rgba(234, 240, 236, 0.5);
    letter-spacing: 0.03em;
    margin: 0;
}

.gh-app-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.gh-app-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(234, 240, 236, 0.08);
    border: 1px solid rgba(234, 240, 236, 0.16);
    color: var(--on-ink);
    border-radius: 12px;
    padding: 11px 20px;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.15s ease;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}

.gh-app-btn:hover {
    background: rgba(234, 240, 236, 0.14);
    transform: translateY(-1px);
}

.gh-app-btn:active {
    transform: translateY(0);
}

.gh-store-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.gh-store-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.gh-store-sub {
    font-family: 'Outfit', sans-serif;
    font-size: 0.62rem;
    font-weight: 400;
    color: rgba(234, 240, 236, 0.5);
    letter-spacing: 0.01em;
    line-height: 1;
}

.gh-store-name {
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--on-ink);
    line-height: 1.2;
}

@media (min-width: 640px) {
    .gh-section {
        padding: 92px 32px 100px;
    }

    .gh-headline {
        font-size: 2.25rem;
    }

    .gh-phone {
        width: 240px;
        height: 320px;
    }

    .gh-footer {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .gh-section {
        padding: 108px 48px 116px;
    }

    .gh-layout {
        flex-direction: row;
        gap: 96px;
        align-items: flex-start;
        margin-bottom: 56px;
    }

    .gh-phone-col {
        position: sticky;
        top: 110px;
        flex: 0 0 300px;
        padding: 0;
        background: none;
        justify-content: center;
    }

    .gh-phone {
        width: 280px;
        height: 372px;
        border-radius: 34px;
        padding: 12px;
    }

    .gh-screens {
        border-radius: 23px;
    }

    .gh-steps {
        flex: 1;
    }

    .gh-step {
        padding: 44px 0;
    }

    .gh-step-num {
        font-size: 1.9rem;
    }

    .gh-step-title {
        font-size: 1.15rem;
    }
}

/* ========================================
   FILTER CARE — EXPLODED LAYERS + TIMELINE
======================================== */
.fc-section {
    background: var(--mist-deep);
    padding: 72px 20px 80px;
    border-top: 1px solid var(--ink-line-soft);
}

.fc-container {
    max-width: 1080px;
    margin: 0 auto;
}

.fc-header {
    margin-bottom: 44px;
}

/* ---- Body: illustration + timeline ---- */
.fc-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 44px;
}

/* ---- Exploded filter illustration ---- */
.fc-illustration {
    display: flex;
    justify-content: center;
    width: 100%;
}

.fc-filter-svg {
    width: 100%;
    max-width: 440px;
    height: auto;
}

/* Layer sheets fan out from behind the cylinder on reveal */
.fcx-sheet {
    transition: transform 1s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.7s ease;
}

.fcx-s1 { transition-delay: 0.15s; }
.fcx-s2 { transition-delay: 0.3s; }
.fcx-s3 { transition-delay: 0.45s; }

.fcx-label {
    transition: opacity 0.6s ease 0.9s;
}

.fc-body.will-reveal:not(.is-revealed) .fcx-s1 {
    transform: translateX(-80px);
    opacity: 0;
}

.fc-body.will-reveal:not(.is-revealed) .fcx-s2 {
    transform: translateX(-150px);
    opacity: 0;
}

.fc-body.will-reveal:not(.is-revealed) .fcx-s3 {
    transform: translateX(-220px);
    opacity: 0;
}

.fc-body.will-reveal:not(.is-revealed) .fcx-label {
    opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
    .fcx-sheet,
    .fcx-label {
        transition: none;
    }
}

/* ---- Maintenance timeline ---- */
.fc-timeline {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.fc-tl-item {
    position: relative;
    padding: 0 0 30px 30px;
}

/* Rail */
.fc-tl-item::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 14px;
    bottom: -4px;
    width: 1px;
    background: var(--ink-line);
}

.fc-tl-item:last-of-type::before {
    display: none;
}

/* Node dot */
.fc-tl-dot {
    position: absolute;
    left: 0;
    top: 5px;
    width: 9px;
    height: 9px;
    border-radius: 9999px;
}

.fc-dot--care { background: var(--warning); }
.fc-dot--do { background: var(--success); }
.fc-dot--replace { background: var(--teal-deep); }
.fc-dot--dont { background: var(--error); }

/* Frequency label */
.fc-tl-freq {
    display: inline-block;
    font-family: 'Outfit', sans-serif;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 7px;
}

.fc-freq--care { color: var(--warning); }
.fc-freq--do { color: var(--success); }
.fc-freq--replace { color: var(--teal-deep); }
.fc-freq--dont { color: var(--error); }

.fc-tl-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin: 0 0 5px;
}

.fc-tl-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 0.86rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0;
    max-width: 420px;
}

/* Replacement filter link */
.fc-replace-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    align-self: flex-start;
    margin: 6px 0 0 30px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--teal-deep);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: gap 0.2s ease, color 0.2s ease;
}

.fc-replace-link svg {
    width: 15px;
    height: 15px;
}

.fc-replace-link:hover {
    color: var(--teal-deep-hover);
    gap: 12px;
}

@media (min-width: 640px) {
    .fc-section {
        padding: 88px 32px 96px;
    }

    .fc-filter-svg {
        max-width: 460px;
    }
}

@media (min-width: 1024px) {
    .fc-section {
        padding: 104px 48px 112px;
    }

    .fc-body {
        flex-direction: row;
        align-items: flex-start;
        gap: 72px;
    }

    .fc-illustration {
        flex: 0 0 46%;
        position: sticky;
        top: 96px;
    }

    .fc-filter-svg {
        max-width: 480px;
    }

    .fc-timeline {
        flex: 1;
    }
}

/* ========================================
   NEED HELP BAND
======================================== */
.ih-section {
    background: var(--mist);
    border-top: 1px solid var(--ink-line-soft);
    padding: 72px 20px;
}

.ih-container {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.ih-headline {
    font-family: 'Outfit', sans-serif;
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 10px;
}

.ih-desc {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--ink-soft);
    line-height: 1.6;
    margin: 0 0 28px;
}

.ih-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.ih-btn {
    display: inline-flex;
    align-items: center;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--on-ink);
    background: var(--ink);
    border-radius: 9999px;
    padding: 13px 28px;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.ih-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--shadow-tint-md);
}

.ih-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--teal-deep);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: gap 0.2s ease, color 0.2s ease;
}

.ih-link svg {
    width: 15px;
    height: 15px;
}

.ih-link:hover {
    color: var(--teal-deep-hover);
    gap: 12px;
}

@media (min-width: 640px) {
    .ih-section {
        padding: 88px 32px;
    }

    .ih-headline {
        font-size: 2rem;
    }
}