/* LiveLink: quiet surfaces, clear hierarchy, one connected system. */
:root {
    --refresh-bg: #f7f8f4;
    --refresh-card: #fff;
    --refresh-ink: #162c25;
    --refresh-line: #dfe6df;
    --refresh-muted: #62716a;
    --refresh-stage: #dce9d7;
    --refresh-green: #246c50;
    --refresh-shadow: 0 16px 48px rgba(22, 44, 37, .06);
}
[data-theme="dark"] {
    --refresh-bg: #101b17;
    --refresh-card: #182820;
    --refresh-ink: #edf5ee;
    --refresh-line: #31463b;
    --refresh-muted: #b1c3b6;
    --refresh-stage: #203d2d;
    --refresh-green: #9cddb2;
    --refresh-shadow: 0 16px 48px rgba(0, 0, 0, .15);
}
body { font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--refresh-bg); color: var(--refresh-ink); -webkit-font-smoothing: antialiased; }
.page-shell, [data-theme="dark"] .page-shell { background: none; }
.page-shell::before, .hero::before, .process-section::before, .process-section::after { display: none !important; }
.site-header, [data-theme="dark"] .site-header { top: 0; width: 100%; margin: 0; border: 0; border-radius: 0; background: var(--refresh-stage); box-shadow: none; }
.nav-wrap { width: var(--container); min-height: 84px; margin-inline: auto; padding: 10px 0; }
.brand-text strong { font-weight: 750; letter-spacing: -.04em; font-size: 1.4rem; }
.brand-text small { display: none; }
.site-nav { gap: 16px; }
.site-nav a { font-weight: 550; font-size: .9rem; border-radius: 0; }
.site-nav a.is-active,
.site-nav a.is-active:hover,
.site-nav a.is-active:focus-visible,
[data-theme="dark"] .site-nav a.is-active,
[data-theme="dark"] .site-nav a.is-active:hover,
[data-theme="dark"] .site-nav a.is-active:focus-visible {
    background: transparent;
    color: var(--refresh-ink);
    box-shadow: inset 0 -2px 0 var(--refresh-green);
}
@media (max-width: 900px) {
    .nav-wrap { min-height: 78px; }
    .site-header .mobile-nav .nav-toggle {
        width: 44px;
        height: 44px;
        border: 0;
        border-radius: 0;
        background: transparent;
        color: var(--refresh-ink);
    }
    .site-header .mobile-nav .nav-toggle span {
        left: 11px;
        right: auto;
        width: 22px;
        height: 2px;
        margin: 0;
        border-radius: 1px;
        background: currentColor;
        transform-origin: center;
        transition: top .22s ease, width .22s ease, transform .22s ease;
    }
    .site-header .mobile-nav .nav-toggle span:first-child { top: 17px; }
    .site-header .mobile-nav .nav-toggle span:last-child { top: 25px; width: 16px; }
    .site-header .mobile-nav[open] .nav-toggle span:first-child { top: 21px; transform: rotate(45deg); }
    .site-header .mobile-nav[open] .nav-toggle span:last-child { top: 21px; width: 22px; transform: rotate(-45deg); }

    .site-header .mobile-nav .mobile-menu-panel {
        top: 78px !important;
        gap: 0;
        padding: 0 16px 12px;
        border: 0;
        border-radius: 0;
        background: var(--refresh-stage);
        box-shadow: 0 16px 24px rgba(22, 44, 37, .08);
    }
    .site-header .mobile-nav .mobile-menu-panel a {
        min-height: 52px;
        justify-content: flex-start;
        padding: 14px 12px;
        border: 0;
        border-bottom: 1px solid var(--refresh-line);
        border-radius: 0;
        background: transparent;
        color: var(--refresh-ink);
        font-weight: 550;
    }
    .site-header .mobile-nav .mobile-menu-panel a:last-child { border-bottom: 0; }
    .site-header .mobile-nav .mobile-menu-panel a:hover,
    .site-header .mobile-nav .mobile-menu-panel a:focus-visible,
    .site-header .mobile-nav .mobile-menu-panel a.is-active {
        background: var(--refresh-card);
        color: var(--refresh-ink);
        box-shadow: inset 3px 0 0 var(--refresh-green);
    }
}
.header-cta { border-radius: 10px; }
.hero, [data-theme="dark"] .hero { margin-top: 0; padding: 78px 0 88px; min-height: auto; background: none; }
.hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 70px; max-width: 1180px; }
.hero h1 { margin: 0; max-width: none; font-size: clamp(3rem, 5.3vw, 4.6rem); line-height: 1.05; letter-spacing: -.065em; color: var(--refresh-ink); font-weight: 650; }
.hero h1 .grad, [data-theme="dark"] .hero h1 .grad { background: none; -webkit-text-fill-color: var(--refresh-green); color: var(--refresh-green); }
.eyebrow, .hero .eyebrow { margin-bottom: 24px; font-size: .7rem; font-weight: 600; letter-spacing: .12em; color: var(--refresh-green); }
.eyebrow::before { display: none !important; }
.hero-text { max-width: 43ch; margin-top: 26px; font-size: 1rem; line-height: 1.8; color: var(--refresh-muted); }
.hero-actions { display: flex; align-items: center; gap: 24px; margin: 30px 0 22px; }
.button, .hero-actions .button-primary, .button-full { min-height: 50px; padding: 0 22px; border-radius: 10px; font-size: .88rem; font-weight: 600; }
.button-primary, .hero-actions .button-primary { gap: 20px; background: #246c50; color: #fff; box-shadow: none; }
.button-primary:hover { background: #185439; box-shadow: none; }
[data-theme="dark"] .button-primary { background: #a8e3b9; color: #122a1b; }
.hero-text-link { font-size: .86rem; font-weight: 600; white-space: nowrap; }
.hero-text-link span { margin-left: 10px; }
.hero-text-link:hover { color: var(--refresh-green); }
.hero-footnote { margin: 0; font-size: .76rem; color: var(--refresh-muted); }
/* One measured value travels from the sensor to the dashboard. */
.data-flow { width: min(100%, 500px); margin-top: 28px; }
.data-flow-nodes { display: grid; grid-template-columns: minmax(0, 1fr) 112px minmax(0, 1fr); align-items: center; }
.flow-node { position: relative; padding: 16px; border: 1px solid var(--refresh-line); background: var(--refresh-card); border-radius: 14px; display: grid; gap: 8px; transition: border-color .4s, box-shadow .4s; }
.flow-node-top { display: flex; justify-content: space-between; align-items: center; }
.flow-node-top svg { width: 24px; height: 24px; fill: none; stroke: var(--refresh-green); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.flow-node-top i { width: 5px; height: 5px; border-radius: 50%; background: #4ba77e; box-shadow: 0 0 0 4px rgba(75, 167, 126, .09); }
.flow-node-label { font-size: .66rem; color: var(--refresh-muted); margin-top: 4px; }
.flow-node strong { font-size: 1.55rem; font-weight: 600; letter-spacing: -.045em; font-variant-numeric: tabular-nums; color: var(--refresh-ink); }
.flow-node strong small { font-size: .75rem; font-weight: 400; letter-spacing: 0; color: var(--refresh-muted); }
.flow-node-detail { font-size: .6rem; color: var(--refresh-muted); }
.flow-connection { position: relative; height: 70px; }
.flow-wire { position: absolute; left: 0; right: 0; top: 50%; height: 2px; background: linear-gradient(90deg, #57b58a, #48a6a9); opacity: .5; }
.flow-arrow { position: absolute; right: 7px; top: 50%; transform: translateY(-54%); font-size: 1.5rem; color: var(--refresh-green); }
.flow-packet { position: absolute; left: 0; top: 50%; opacity: 0; display: flex; align-items: center; white-space: nowrap; padding: 7px 9px; background: #246c50; color: #fff; font-size: .65rem; font-weight: 600; border: 3px solid var(--refresh-bg); border-radius: 10px; box-shadow: 0 0 20px rgba(54, 161, 108, .18); transform: translate(-50%, -50%); z-index: 1; }
.flow-packet small { font-size: .55rem; font-weight: 400; margin-left: 2px; }
.flow-transfer-label { position: absolute; bottom: 0; left: 0; right: 0; text-align: center; font-size: .55rem; color: var(--refresh-muted); }
.flow-caption { display: flex; align-items: center; gap: 7px; margin-top: 12px; min-height: 22px; font-size: .65rem; color: var(--refresh-muted); }
.flow-step-dot { width: 4px; height: 4px; flex-shrink: 0; border-radius: 50%; background: var(--refresh-green); }
.flow-demo-label { margin-left: auto; font-size: .55rem; border: 1px solid var(--refresh-line); border-radius: 4px; padding: 3px 5px; }
.data-flow[data-phase="measure"] .flow-sensor, .data-flow[data-phase="receive"] .flow-web { border-color: #55a981; box-shadow: 0 0 0 4px rgba(85, 169, 129, .09); }
.data-flow[data-phase="measure"] .flow-sensor .flow-node-top i, .data-flow[data-phase="receive"] .flow-web .flow-node-top i { animation: flow-node-pulse .8s ease-out; }
.data-flow[data-phase="send"] .flow-packet { animation: flow-value-travel 1.8s cubic-bezier(.35, 0, .2, 1) both; }
.overview-values [data-flow-dashboard] { font-size: inherit; color: inherit; }
.overview-values > div.flow-updated { animation: flow-dashboard-receive 1s ease-out; }
@keyframes flow-value-travel {
    0% { left: 0; opacity: 0; transform: translate(-50%, -50%) scale(.8); }
    12% { opacity: 1; }
    80% { opacity: 1; }
    100% { left: 100%; opacity: 0; transform: translate(-50%, -50%) scale(1); }
}
@keyframes flow-node-pulse { 50% { box-shadow: 0 0 0 9px rgba(85, 169, 129, .13); } }
@keyframes flow-dashboard-receive { 0% { box-shadow: inset 0 0 0 2px #55a981; } 100% { box-shadow: inset 0 0 0 2px transparent; } }

.overview-stage { padding: 28px; border-radius: 26px; background: var(--refresh-stage); transform: rotate(1deg); }
.overview-caption { display: flex; justify-content: space-between; font-size: .85rem; font-weight: 550; margin-bottom: 26px; }
.overview-caption > span:last-child { font-size: 1.3rem; }
.overview-app { background: var(--refresh-card); border: 1px solid var(--refresh-line); border-radius: 16px; padding: 24px; box-shadow: 0 24px 48px rgba(25, 56, 37, .08); transform: rotate(-1deg); }
.overview-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 20px; border-bottom: 1px solid var(--refresh-line); }
.overview-brand { font-size: .9rem; font-weight: 700; letter-spacing: -.03em; }
.overview-brand > span { color: var(--refresh-muted); font-size: .75rem; font-weight: 400; }
.overview-demo { font-size: .62rem; border: 1px solid var(--refresh-line); border-radius: 5px; padding: 4px 8px; color: var(--refresh-muted); }
.overview-heading { display: flex; justify-content: space-between; gap: 10px; align-items: center; padding: 22px 0; }
.overview-heading p { font-size: .7rem; color: var(--refresh-muted); margin: 0 0 8px; }
.overview-heading h2 { font-size: 1.25rem; letter-spacing: -.045em; margin: 0; font-weight: 600; }
.overview-status { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; font-size: .6rem; color: var(--refresh-green); }
.overview-status i { width: 5px; height: 5px; border-radius: 50%; background: var(--refresh-green); }
.overview-values { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.overview-values > div { display: grid; gap: 10px; background: var(--refresh-bg); padding: 18px; border-radius: 10px; }
.overview-values span { color: var(--refresh-muted); font-size: .68rem; }
.overview-values strong { font-size: 2.1rem; letter-spacing: -.05em; font-weight: 550; }
.overview-values small { font-size: .8rem; font-weight: 450; color: var(--refresh-muted); }
.overview-chart { margin-top: 24px; }
.overview-chart > div { display: flex; justify-content: space-between; font-size: .65rem; color: var(--refresh-muted); }
.overview-chart svg { display: block; width: 100%; height: 100px; margin-top: 14px; overflow: visible; }
.chart-grid { stroke: var(--refresh-line); fill: none; stroke-width: 1; }
.chart-area { fill: var(--refresh-green); opacity: .07; }
.chart-line { fill: none; stroke: var(--refresh-green); stroke-width: 2.5; }
.overview-event { display: flex; gap: 12px; align-items: center; border-top: 1px solid var(--refresh-line); padding-top: 18px; margin-top: 14px; }
.event-icon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--refresh-stage); color: var(--refresh-green); }
.overview-event div { display: grid; gap: 5px; flex: 1; }
.overview-event strong { font-size: .75rem; font-weight: 550; }
.overview-event div span { color: var(--refresh-muted); font-size: .65rem; }
.overview-note { text-align: center; font-size: .65rem; margin: 20px 0 0; color: var(--refresh-muted); }
.simple-design .section, [data-theme="dark"] .simple-design .section { background: transparent; backdrop-filter: none; padding-block: 80px; }
.simple-design .section-alt { border-block: 1px solid var(--refresh-line); }
.simple-design .section-heading { max-width: 720px; margin-bottom: 38px; }
.simple-design .section-heading h2, .contact-copy h2 { max-width: 22ch; font-size: clamp(2rem, 3.3vw, 3rem); line-height: 1.12; letter-spacing: -.05em; font-weight: 550; color: var(--refresh-ink); }
.simple-design .section-heading p { max-width: 58ch; color: var(--refresh-muted); font-size: .95rem; line-height: 1.8; }
.service-pillars { gap: 24px; }
.pillar-card, .pillar-card-featured, [data-theme="dark"] .pillar-card { padding: 30px; min-height: 0; border: 1px solid var(--refresh-line); border-radius: 16px; background: var(--refresh-card); box-shadow: none; transform: none; }
.pillar-card::after { display: none; }
.pillar-card .pillar-kicker { color: var(--refresh-green); font-size: .65rem; font-weight: 600; letter-spacing: .08em; }
.pillar-card h3 { margin-top: 22px; color: var(--refresh-ink); font-size: 1.35rem; letter-spacing: -.035em; font-weight: 600; font-family: inherit; }
.pillar-card p, .pillar-card li, .pillar-card-featured p, .pillar-card-featured li { color: var(--refresh-muted); font-size: .87rem; line-height: 1.7; }
.pillar-card ul { margin-top: 22px; }
.pillar-card:hover { transform: translateY(-3px); box-shadow: var(--refresh-shadow); }
.service-catalog { margin-top: 28px; border-block: 1px solid var(--refresh-line); }
.service-catalog > summary { display: flex; justify-content: space-between; align-items: center; list-style: none; padding: 22px 4px; cursor: pointer; font-size: .9rem; font-weight: 550; }
.service-catalog > summary::-webkit-details-marker { display: none; }
.service-catalog > summary span { font-size: 1.4rem; transition: transform .2s; }
.service-catalog[open] > summary span { transform: rotate(45deg); }
.service-catalog .matrix-heading { margin-top: 28px; }
.service-catalog .services-grid { margin-bottom: 28px; }
.service-card { border: 1px solid var(--refresh-line); background: var(--refresh-card); border-radius: 12px; box-shadow: none; }
.service-card p { color: var(--refresh-muted); }
.audience-band { border-block: 1px solid var(--refresh-line); padding-block: 32px; }
.audience-band .container { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.audience-band span { font-size: .75rem; color: var(--refresh-muted); }
.audience-band p { font-size: .9rem; margin: 0; line-height: 1.8; }
.audience-band i { font-style: normal; margin-inline: 10px; color: var(--refresh-muted); }
.case-study-card, [data-theme="dark"] .case-study-card { border: 0; border-top: 1px solid var(--refresh-line); border-radius: 0; background: transparent; padding: 28px 0; box-shadow: none; }
.case-study-card:hover { box-shadow: none; transform: none; }
.case-study-card::before, .case-study-card::after { display: none; }
.case-study-card h3 { font-family: inherit; letter-spacing: -.025em; }
.reference-layout { gap: 40px; }
.reference-copy h3 { letter-spacing: -.04em; font-family: inherit; }
.reference-card, [data-theme="dark"] .reference-card { border: 1px solid var(--refresh-line); border-radius: 20px; box-shadow: none; }
.process-layout { display: block; }
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.timeline-item, [data-theme="dark"] .timeline-item { min-height: 0; padding: 24px 0; border: 0; border-top: 1px solid var(--refresh-line); border-radius: 0; background: transparent; box-shadow: none; }
.timeline-item::before, .timeline-item::after { display: none; }
.timeline-item h3 { font-family: inherit; font-size: 1rem; line-height: 1.5; letter-spacing: -.025em; font-weight: 550; }
.timeline-index { color: var(--refresh-green); }
.contact-layout { gap: 80px; align-items: start; }
.contact-copy, [data-theme="dark"] .contact-copy { padding: 0; background: none; border: 0; box-shadow: none; border-radius: 0; }
.contact-copy .eyebrow { color: var(--refresh-green); }
.contact-copy p { color: var(--refresh-muted); font-size: .95rem; line-height: 1.8; }
.contact-card, [data-theme="dark"] .contact-card { border: 1px solid var(--refresh-line); border-radius: 16px; background: var(--refresh-card); box-shadow: none; padding: 32px; }
.contact-form input:not([type="checkbox"]), .contact-form textarea { border: 1px solid var(--refresh-line); border-radius: 8px; background: var(--refresh-bg); }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--refresh-green); }
.site-footer { border-top: 1px solid var(--refresh-line); background: transparent; }
.footer-tech { display: none; }
.footer-brand strong { color: var(--refresh-ink); }
.footer-brand p, .footer-bottom { color: var(--refresh-muted); }
.reveal { opacity: 1; transform: none; transition: none; }
.skip-link { position: fixed; top: 8px; left: 16px; z-index: 2147483647; padding: 12px 20px; background: var(--refresh-card); color: var(--refresh-ink); border-radius: 10px; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
@media (max-width: 1080px) {
    .hero-grid { gap: 36px; }
    .hero-actions { align-items: start; flex-direction: column; gap: 20px; }
    .overview-stage { padding: 20px; }
    .overview-app { padding: 20px; }
    .overview-heading { align-items: start; flex-direction: column; }
    .contact-layout { gap: 40px; }
}
@media (max-width: 800px) {
    .hero, [data-theme="dark"] .hero { padding: 26px 0 56px; }
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: clamp(2.8rem, 8vw, 4.6rem); }
    .hero-actions { flex-direction: row; align-items: center; flex-wrap: wrap; }
    .overview-stage { width: 100%; max-width: 550px; margin-inline: auto; transform: none; }
    .overview-app { transform: none; }
    .overview-heading { flex-direction: row; align-items: center; }
    .service-pillars { grid-template-columns: 1fr; }
    .audience-band .container { display: block; }
    .audience-band p { margin-top: 12px; }
    .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .simple-design .section { padding-block: 56px; }
    .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .data-flow-nodes { grid-template-columns: minmax(0, 1fr) 82px minmax(0, 1fr); }
    .flow-node { padding: 12px; }
    .flow-node-label { font-size: .59rem; }
    .flow-node-detail { font-size: .55rem; }
    .flow-caption { font-size: .6rem; }
    .flow-packet { padding: 6px; font-size: .6rem; }

    .nav-wrap { padding: 10px 0; }
    .hero h1 { font-size: clamp(2.4rem, 11.7vw, 2.85rem); }
    .hero-text { font-size: .94rem; }
    .hero-actions { gap: 22px; }
    .hero-actions .button-primary { width: 100%; justify-content: space-between; }
    .overview-stage { padding: 18px; border-radius: 18px; }
    .overview-app { padding: 16px; }
    .overview-heading h2 { font-size: 1.05rem; }
    .overview-status { font-size: .55rem; }
    .overview-values > div { padding: 14px; }
    .overview-values strong { font-size: 1.9rem; }
    .overview-values span { font-size: .6rem; }
    .overview-caption { font-size: .8rem; }
    .pillar-card { padding: 24px; }
    .contact-card { padding: 22px; }
    .timeline { gap: 18px; }
    .audience-band i { margin-inline: 5px; }
}
/* Hands-on scenarios share the same surfaces and feedback language. */
[hidden] { display: none !important; }
.interactive-only, .experience-tabs { display: none; }
.enhancements-ready .interactive-only { display: block; }
.enhancements-ready .experience-tabs { display: flex; }
.scenario-lab { border: 1px solid var(--refresh-line); border-radius: 22px; background: var(--refresh-card); overflow: hidden; }
.lab-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 22px 28px 0; }
.lab-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: .7rem; color: var(--refresh-green); }
.lab-kicker i { width: 5px; height: 5px; border-radius: 50%; background: var(--refresh-green); box-shadow: 0 0 0 4px rgba(67, 158, 103, .1); }
.lab-demo, .screen-demo-badge { font-size: .6rem; color: var(--refresh-muted); letter-spacing: .04em; }
.experience-tabs { gap: 8px; flex-wrap: wrap; margin-bottom: 0; }
.scenario-lab .experience-tabs { padding: 20px 28px; border-bottom: 1px solid var(--refresh-line); }
.experience-tabs button { border: 1px solid var(--refresh-line); color: var(--refresh-muted); background: var(--refresh-bg); border-radius: 10px; padding: 12px 18px; font-size: .8rem; cursor: pointer; transition: background .2s, color .2s; }
.experience-tabs button[aria-selected="true"] { color: var(--refresh-card); background: var(--refresh-ink); border-color: var(--refresh-ink); }
.experience-tabs button:hover { border-color: var(--refresh-green); }
.lab-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; padding: 40px; align-items: center; }
.lab-category { color: var(--refresh-green); font-size: .65rem; }
.lab-copy h3 { color: var(--refresh-ink); font-size: clamp(1.5rem, 2.3vw, 2.2rem); line-height: 1.16; letter-spacing: -.045em; font-weight: 550; margin: 18px 0; }
.lab-copy p { color: var(--refresh-muted); font-size: .9rem; line-height: 1.8; max-width: 46ch; }
.idea-link { display: inline-flex; align-items: center; gap: 12px; color: var(--refresh-green); font-size: .75rem; font-weight: 550; padding-block: 12px; margin-top: 12px; }
.idea-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.level-control { margin-top: 26px; }
.level-control > span { display: flex; align-items: center; justify-content: space-between; font-size: .8rem; }
.level-control output { color: var(--refresh-green); font-variant-numeric: tabular-nums; }
.level-control input { width: 100%; accent-color: #37815a; margin: 18px 0 10px; cursor: pointer; min-height: 28px; }
.level-control small { display: block; color: var(--refresh-muted); font-size: .7rem; }
.water-demo, .power-demo, .booking-demo { padding: 24px; border: 1px solid var(--refresh-line); border-radius: 16px; background: var(--refresh-bg); }
.demo-screen-head { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 20px; border-bottom: 1px solid var(--refresh-line); font-size: .7rem; }
.water-display { display: flex; gap: 32px; align-items: center; justify-content: center; padding: 28px 0; }
.water-tank { width: 100px; height: 160px; border: 2px solid var(--refresh-line); border-radius: 14px; position: relative; overflow: hidden; background: var(--refresh-card); }
.water-fill { position: absolute; inset: auto 0 0; height: var(--level); background: linear-gradient(0deg, #67b0b6, #a6d6d3); transition: height .25s; }
.water-fill::before { content: ""; position: absolute; left: -50%; top: -10px; width: 200%; height: 22px; border-radius: 50%; background: rgba(114, 192, 196, .45); animation: tank-ripple 4s ease-in-out infinite alternate; }
.tank-mark { position: absolute; right: 8px; font-size: .55rem; color: #315d60; z-index: 1; }
.tank-mark-top { top: 8px; }
.tank-mark-bottom { bottom: 8px; }
.reading-label { font-size: .7rem; color: var(--refresh-muted); display: block; }
.water-display strong { display: block; font-size: 3.2rem; font-weight: 550; letter-spacing: -.06em; margin: 10px 0; font-variant-numeric: tabular-nums; }
.water-display strong small { font-size: 1rem; font-weight: 400; }
.water-state { display: block; color: var(--refresh-green); font-size: .75rem; }
.lab-notification { display: flex; align-items: center; gap: 12px; border: 1px solid var(--refresh-line); border-radius: 10px; padding: 16px; background: var(--refresh-card); }
.notification-icon { flex-shrink: 0; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; color: var(--refresh-green); background: var(--refresh-stage); }
.lab-notification div { display: grid; gap: 6px; }
.lab-notification strong { font-size: .75rem; font-weight: 550; }
.lab-notification div > span { color: var(--refresh-muted); font-size: .66rem; line-height: 1.6; }
.is-alert .lab-notification { border-color: #c18c52; background: rgba(204, 151, 66, .08); }
.is-alert .notification-icon { background: #f4d8b4; color: #865019; }
.is-alert .water-state { color: #9a6028; }
.is-alert .water-fill { background: linear-gradient(0deg, #bd945e, #e8cfa9); }
.power-symbol { display: grid; place-items: center; width: 68px; height: 68px; border-radius: 20px; background: var(--refresh-stage); color: var(--refresh-green); font-size: 3rem; margin: 28px auto 20px; }
.power-state { display: block; text-align: center; font-size: 1.25rem; letter-spacing: -.035em; font-weight: 550; }
.power-reading { display: block; text-align: center; margin: 10px 0 28px; font-size: .7rem; color: var(--refresh-muted); }
.is-alert .power-symbol { color: #865019; background: #f4d8b4; }
.demo-small-note { font-size: .6rem; line-height: 1.7; color: var(--refresh-muted); margin: 14px 0 0; }
#demo-power-toggle { margin-top: 22px; }
.booking-label { font-size: .8rem; margin: 22px 0 16px; }
.enhancements-ready .booking-slots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.booking-slots button { border: 1px solid var(--refresh-line); color: var(--refresh-ink); background: var(--refresh-card); border-radius: 8px; padding: 14px; font-size: .9rem; cursor: pointer; }
.booking-slots button[aria-pressed="true"] { background: var(--refresh-stage); border-color: var(--refresh-green); }
.booking-actions { margin: 18px 0; }
.booking-actions .button { width: 100%; }
.button:disabled { opacity: .55; cursor: default; transform: none; }
.demo-reset { background: none; border: 0; padding: 12px 0; color: var(--refresh-green); font-size: .75rem; cursor: pointer; }
.is-confirmed .lab-notification { border-color: var(--refresh-green); }
.more-examples { margin-top: 28px; }
.more-examples > summary { display: flex; justify-content: space-between; gap: 16px; list-style: none; padding: 18px 0; border-bottom: 1px solid var(--refresh-line); font-size: .85rem; cursor: pointer; }
.more-examples > summary::-webkit-details-marker { display: none; }
.more-examples > summary span { font-size: 1.2rem; }
.more-examples[open] > summary span { transform: rotate(45deg); }
.reference-layout { display: block; }
.reference-layout > .experience-tabs { margin: 0 0 24px; }
.reference-card, [data-theme="dark"] .reference-card { display: block; padding: 28px; background: var(--refresh-card); }
.reference-copy, .reference-card--app .reference-copy, .reference-card--ducks .reference-copy { position: static; padding: 0 0 18px; max-width: 700px; margin: 0; border: 0; background: none; }
.reference-copy h3 { font-size: 1.7rem; color: var(--refresh-ink); }
.reference-card--app .reference-copy h3, .reference-card--ducks .reference-copy h3 { color: var(--refresh-ink); }
.reference-card--app .reference-copy p, .reference-card--ducks .reference-copy p { color: var(--refresh-muted); font-size: .85rem; line-height: 1.8; }
.reference-card .reference-kicker,
[data-theme="dark"] .reference-card .reference-kicker { color: var(--refresh-green); background: none; border: 0; padding: 0; width: fit-content; font-size: .65rem; }
[data-theme="dark"] .reference-card .reference-copy h3 { color: var(--refresh-ink); }
[data-theme="dark"] .reference-card .reference-copy p { color: var(--refresh-muted); }
.refDuckDoor strong, [data-theme="dark"] .refDuckDoor strong { color: #233c1f; background: #d9e8cc; }
[data-theme="dark"] .refDuckOnline { color: #b8dc9c; }
.demo-command-story { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 2px 0 24px; }
.demo-command-story > span { padding: 10px 12px; border: 1px solid var(--refresh-line); border-radius: 8px; font-size: .65rem; color: var(--refresh-muted); transition: background .2s; }
.demo-command-story i { font-style: normal; color: var(--refresh-muted); font-size: .8rem; }
.demo-command-story .is-current { background: var(--refresh-stage); border-color: var(--refresh-green); color: var(--refresh-green); }
.demo-command-story .is-complete { color: var(--refresh-green); }
.timeline { border: 0; border-radius: 0; }
.timeline-item p { font-size: .8rem; line-height: 1.8; color: var(--refresh-muted); margin: 14px 0 0; }
.contact-prompts { margin-top: 28px; }
.contact-prompts > span { display: block; margin-bottom: 12px; font-size: .75rem; color: var(--refresh-muted); }
.contact-prompts a { color: var(--refresh-ink); display: inline-block; font-size: .7rem; padding: 10px 12px; margin: 0 5px 8px 0; border: 1px solid var(--refresh-line); border-radius: 8px; }
.contact-prompts a:hover { background: var(--refresh-stage); }
.contact-faq { margin-top: 26px; }
.contact-faq details { border-top: 1px solid var(--refresh-line); }
.contact-faq summary { color: var(--refresh-ink); font-size: .8rem; padding: 16px 0; cursor: pointer; line-height: 1.6; }
.contact-faq details p { font-size: .78rem; margin: 0 0 18px; }
.form-intro strong { font-size: 1.1rem; letter-spacing: -.025em; font-weight: 550; }
.form-intro p { color: var(--refresh-muted); font-size: .8rem; margin: 8px 0 6px; }
.contact-form label > span > small { color: var(--refresh-muted); font-size: .65rem; font-weight: 400; }
.idea-feedback { font-size: .72rem; line-height: 1.7; color: var(--refresh-green); margin: 0; }
.idea-feedback:empty { display: none; }
@keyframes tank-ripple { to { transform: translateX(14%) rotate(3deg); } }
@media (max-width: 900px) {
    .lab-panel { gap: 28px; padding: 28px; }
}
@media (max-width: 700px) {
    .lab-panel { grid-template-columns: 1fr; gap: 26px; padding: 22px; }
    .lab-toolbar { padding: 18px 20px 0; }
    .scenario-lab .experience-tabs { padding: 18px 20px; gap: 6px; }
    .experience-tabs button { font-size: .7rem; padding: 12px; }
    .lab-demo { font-size: .5rem; }
    .water-demo, .power-demo, .booking-demo { padding: 18px; }
    .water-display { gap: 24px; }
    .reference-card, [data-theme="dark"] .reference-card { padding: 18px; }
    .demo-command-story { gap: 6px; }
    .demo-command-story > span { padding: 8px; font-size: .56rem; }
    .demo-command-story i { display: none; }
    .contact-layout { gap: 32px; }
}

/* A compact sketch of the visitor's own connected system. */
.solution-builder { margin-top: 28px; border: 1px solid var(--refresh-line); border-radius: 18px; background: var(--refresh-card); overflow: hidden; }
.solution-builder > summary { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 24px 28px; list-style: none; cursor: pointer; color: var(--refresh-ink); }
.solution-builder > summary::-webkit-details-marker { display: none; }
.solution-builder > summary > span:first-child { display: grid; gap: 8px; font-size: 1.2rem; font-weight: 550; letter-spacing: -.025em; }
.solution-builder > summary small { color: var(--refresh-green); font-size: .6rem; font-weight: 500; letter-spacing: .09em; text-transform: uppercase; }
.builder-open-icon { display: grid; place-items: center; width: 36px; height: 36px; flex-shrink: 0; border: 1px solid var(--refresh-line); border-radius: 50%; font-size: 1.3rem; font-weight: 400; transition: transform .2s; }
.solution-builder[open] .builder-open-icon { transform: rotate(45deg); }
.solution-builder[open] > summary { border-bottom: 1px solid var(--refresh-line); }
.builder-body { padding: 28px; }
.enhancements-ready .builder-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 28px; }
.builder-choices fieldset { margin: 0; border: 0; padding: 0; min-width: 0; }
.builder-choices legend { font-size: .78rem; padding: 0; margin-bottom: 14px; }
.builder-choices legend > span { display: inline-block; color: var(--refresh-green); font-size: .6rem; margin-right: 8px; }
.builder-options { display: flex; flex-wrap: wrap; gap: 8px; }
.builder-options label { position: relative; cursor: pointer; }
.builder-options input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.builder-options label > span { display: block; padding: 11px 14px; border: 1px solid var(--refresh-line); border-radius: 9px; color: var(--refresh-muted); background: var(--refresh-bg); font-size: .73rem; }
.builder-options input:checked + span { background: var(--refresh-stage); color: var(--refresh-ink); border-color: var(--refresh-green); }
.builder-options input:focus-visible + span { outline: 3px solid var(--refresh-green); outline-offset: 3px; }
.builder-result { padding: 24px; border-radius: 14px; background: var(--refresh-bg); }
.builder-result-top { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 22px; color: var(--refresh-muted); font-size: .65rem; }
.builder-result-top > span:last-child { font-size: .55rem; letter-spacing: .08em; }
.builder-circuit { display: grid; grid-template-columns: minmax(0, 1fr) 52px minmax(0, 1fr) 52px minmax(0, 1fr); align-items: center; }
.builder-node { display: grid; gap: 9px; border: 1px solid var(--refresh-line); background: var(--refresh-card); border-radius: 12px; padding: 20px; min-height: 145px; transition: border-color .3s, box-shadow .3s; }
.builder-node-icon { color: var(--refresh-green); font-size: 1.3rem; }
.builder-node small { color: var(--refresh-muted); font-size: .6rem; }
.builder-node strong { color: var(--refresh-ink); font-size: .95rem; font-weight: 550; letter-spacing: -.02em; }
.builder-node > span:last-child { color: var(--refresh-muted); font-size: .65rem; font-variant-numeric: tabular-nums; }
.builder-wire { position: relative; height: 30px; background: linear-gradient(var(--refresh-line), var(--refresh-line)) center / 100% 1px no-repeat; }
.builder-wire > span { position: absolute; top: 50%; right: 5px; transform: translateY(-50%); color: var(--refresh-green); font-size: .8rem; }
.builder-wire > i { position: absolute; top: 50%; left: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--refresh-green); transform: translateY(-50%); opacity: 0; }
.builder-result[data-builder-phase="detect"] [data-builder-node="0"], .builder-result[data-builder-phase="display"] [data-builder-node="1"], .builder-result[data-builder-phase="complete"] [data-builder-node="2"] { border-color: var(--refresh-green); box-shadow: 0 0 0 4px rgba(68, 164, 104, .08); }
.builder-result[data-builder-phase="detect"] .builder-wire:nth-child(2) > i, .builder-result[data-builder-phase="display"] .builder-wire:nth-child(4) > i { animation: builder-transfer .9s ease-in-out both; }
.builder-explanation h3 { font-size: 1.1rem; font-weight: 550; color: var(--refresh-ink); letter-spacing: -.025em; margin: 24px 0 10px; }
.builder-explanation p { font-size: .8rem; line-height: 1.8; color: var(--refresh-muted); max-width: 80ch; margin: 0; }
.builder-bottom { display: flex; align-items: center; gap: 18px; margin-top: 22px; border-top: 1px solid var(--refresh-line); padding-top: 18px; }
.builder-play { background: var(--refresh-card); color: var(--refresh-green); border: 1px solid var(--refresh-line); border-radius: 8px; padding: 10px 14px; font-size: .73rem; cursor: pointer; white-space: nowrap; }
.builder-play > span { margin-right: 5px; }
.builder-play:disabled { opacity: .6; cursor: default; }
.builder-status { font-size: .65rem; color: var(--refresh-muted); line-height: 1.6; }
.builder-contact { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 12px; }
.builder-contact p { font-size: .65rem; color: var(--refresh-muted); line-height: 1.8; max-width: 58ch; margin: 0; }
.builder-contact .idea-link { margin: 0; flex-shrink: 0; }
@keyframes builder-transfer { 0% { left: 0; opacity: 0; } 15%, 85% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
@media (max-width: 800px) {
    .builder-circuit { grid-template-columns: minmax(0, 1fr) 30px minmax(0, 1fr) 30px minmax(0, 1fr); }
    .builder-node { padding: 14px; }
    .builder-contact { display: block; }
    .builder-contact .idea-link { margin-top: 6px; }
}
@media (max-width: 600px) {
    .solution-builder > summary { padding: 20px; }
    .solution-builder > summary > span:first-child { font-size: 1.05rem; line-height: 1.4; }
    .builder-body { padding: 20px; }
    .enhancements-ready .builder-choices { grid-template-columns: 1fr; gap: 20px; }
    .builder-options { gap: 6px; }
    .builder-options label > span { padding: 10px; font-size: .67rem; }
    .builder-result { padding: 18px; }
    .builder-result-top { font-size: .6rem; }
    .builder-circuit { grid-template-columns: 1fr; }
    .builder-node { grid-template-columns: 30px 1fr; gap: 6px 12px; min-height: 0; }
    .builder-node-icon { grid-row: 1 / 4; align-self: center; text-align: center; }
    .builder-node strong { font-size: .9rem; }
    .builder-wire { height: 30px; background-size: 1px 100%; }
    .builder-wire > span { top: 50%; right: 50%; transform: translate(50%, -50%) rotate(90deg); }
    .builder-wire > i { left: 50%; top: 0; transform: translateX(-50%); }
    .builder-result[data-builder-phase="detect"] .builder-wire:nth-child(2) > i, .builder-result[data-builder-phase="display"] .builder-wire:nth-child(4) > i { animation-name: builder-transfer-down; }
    .builder-bottom { flex-direction: column; align-items: start; gap: 12px; }
}
@keyframes builder-transfer-down { 0% { top: 0; opacity: 0; } 15%, 85% { opacity: 1; } 100% { top: 100%; opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}