/* =====================================================================
   clima.lu – Stylesheet
   Farbwelt aus dem Logo: Navy, Kaltblau, Warmrot.
   Der Akzent (--accent) wird vom Temperaturregler im Hero umgeschaltet.
   ===================================================================== */

:root {
    --ink:        #0c1a2b;
    --ink-soft:   #16283f;
    --steel:      #5b6e85;
    --line:       #dce5ee;
    --frost:      #eef3f8;
    --paper:      #ffffff;

    --cool:       #1e8fe5;
    --cool-deep:  #0b6fc0;
    --warm:       #e0342a;
    --warm-deep:  #b62419;

    /* wird per JS zwischen kalt und warm umgeschaltet */
    --accent:      var(--cool);
    --accent-deep: var(--cool-deep);
    --accent-tint: rgba(30, 143, 229, .10);

    --font-display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
    --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

    --wrap: 1180px;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(12, 26, 43, .04), 0 8px 24px rgba(12, 26, 43, .06);
}

html[data-mode="heating"] {
    --accent:      var(--warm);
    --accent-deep: var(--warm-deep);
    --accent-tint: rgba(224, 52, 42, .10);
}

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

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-deep); text-underline-offset: 3px; }
a:hover { color: var(--ink); }

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

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -.02em;
    color: var(--ink);
    margin: 0 0 .5em;
    text-wrap: balance;
}
h1 { font-size: clamp(2.15rem, 5.2vw, 3.7rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.16rem; letter-spacing: -.01em; }
p  { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.section { padding: clamp(3.2rem, 7vw, 6rem) 0; }
.section--frost { background: var(--frost); }
.section--ink { background: var(--ink); color: #e6eef7; }
.section--ink h2, .section--ink h3 { color: #fff; }

.eyebrow {
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--accent-deep);
    margin: 0 0 1rem;
    display: block;
}
.section--ink .eyebrow { color: #7fc0f5; }

.lede { font-size: 1.13rem; color: var(--steel); max-width: 62ch; }
.section--ink .lede { color: #b6c7d9; }

.skip {
    position: absolute; left: -9999px; top: 0; z-index: 100;
    background: var(--ink); color: #fff; padding: .8rem 1.2rem;
}
.skip:focus { left: 0; }

.hp { position: absolute; left: -9999px; }

/* ------------------------------------------------------------- Buttons */
.btn {
    display: inline-flex; align-items: center; gap: .55rem; white-space: nowrap;
    font-family: var(--font-body); font-weight: 600; font-size: 1rem;
    padding: .95rem 1.6rem; border-radius: 999px; border: 2px solid transparent;
    text-decoration: none; cursor: pointer; transition: transform .15s ease, background .2s ease, color .2s ease;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-deep); color: #fff; transform: translateY(-1px); }
.btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { background: #e6eef7; color: var(--ink); }
.btn--block { width: 100%; justify-content: center; }

/* -------------------------------------------------------------- Header */
.header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,.94);
    backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--line);
}
.header__bar { display: flex; align-items: center; gap: 1.2rem; padding: .7rem 0; }
@media (max-width: 1300px) {
    .header__bar { gap: .8rem; }
    .nav a { padding: .5rem .55rem; font-size: .92rem; }
    .header__cta { padding: .8rem 1.1rem; font-size: .95rem; }
}
@media (max-width: 1150px) { .header__phone { display: none; } }
.header__logo img { height: 46px; width: auto; display: block; }
.header__spacer { flex: 1; }

.nav { display: flex; align-items: center; gap: .3rem; }
.nav a {
    font-size: .95rem; font-weight: 500; color: var(--ink); text-decoration: none;
    padding: .5rem .7rem; border-radius: 8px;
}
.nav a:hover { background: var(--frost); }
.nav a[aria-current="page"] { color: var(--accent-deep); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }

.langs { display: flex; gap: .15rem; font-family: var(--font-mono); font-size: .78rem; }
.langs a {
    padding: .55rem .6rem; border-radius: 6px; text-decoration: none;
    color: var(--steel); text-transform: uppercase; letter-spacing: .06em;
}
.langs a[aria-current="true"] { background: var(--ink); color: #fff; }

.header__phone {
    font-family: var(--font-mono); font-size: .88rem; font-weight: 500;
    text-decoration: none; color: var(--ink); white-space: nowrap;
}
.burger {
    display: none; background: none; border: 1px solid var(--line);
    border-radius: 10px; padding: .55rem .7rem; cursor: pointer;
}
.burger span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px 0; }

/* ---------------------------------------------------------------- Hero */
.hero { padding: clamp(2.2rem, 4vw, 3.6rem) 0 clamp(1.8rem, 3vw, 2.8rem); overflow: hidden; }
.hero h1 .verb { color: var(--accent); transition: color .35s ease; }
.hero__points { list-style: none; padding: 0; margin: 1.6rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; }
.hero__points li {
    font-family: var(--font-mono); font-size: .8rem; letter-spacing: .04em;
    color: var(--steel); display: flex; align-items: center; gap: .45rem;
}
.hero__points li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }

/* --------------------------------------------- Hero mit Video, volle Breite */
.hero--video {
    position: relative; padding: 0; isolation: isolate;
    min-height: clamp(28rem, 74vh, 42rem);
    display: grid; align-items: end;
    background: var(--ink); color: #fff;
}
.hero__media { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.hero__video, .hero__still {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    transition: opacity .6s ease;
}
.hero__video.is-hidden, .hero__still.is-hidden { opacity: 0; }
/* Verlauf: links dunkel fuer den Text, rechts frei fuer das Bild */
@media (max-width: 900px) {
    .hero__scrim {
        background:
            linear-gradient(180deg, rgba(8,16,28,.72) 0%, rgba(8,16,28,.55) 30%, rgba(8,16,28,.92) 78%) !important;
    }
    .hero--video { min-height: 0; }
    .hero--video .hero__inner { padding-top: clamp(2.5rem, 12vw, 4rem); }
    .hero--video .lede { font-size: 1.03rem; }
    .hero__actions .btn { flex: 1 1 100%; justify-content: center; }
    .thermal--onvideo { padding: 1rem 1.1rem 1.2rem; }
}
.hero__scrim {
    position: absolute; inset: 0;
    background:
        linear-gradient(180deg, rgba(8,16,28,.55) 0%, rgba(8,16,28,.15) 38%, rgba(8,16,28,.85) 100%),
        linear-gradient(90deg, rgba(8,16,28,.88) 0%, rgba(8,16,28,.62) 46%, rgba(8,16,28,.18) 100%);
}
.hero--video .hero__inner {
    display: grid; gap: clamp(1.8rem, 4vw, 3rem); align-items: end;
    padding: clamp(3rem, 9vw, 6rem) 0 clamp(2rem, 4vw, 3rem);
}
@media (min-width: 950px) {
    .hero--video .hero__inner { grid-template-columns: minmax(0, 1.35fr) minmax(18rem, .65fr); }
}
.hero--video .eyebrow { color: #8fcafd; }
.hero--video h1 { color: #fff; text-shadow: 0 2px 24px rgba(4,10,20,.45); }
.hero--video h1 .verb { color: var(--accent); }
html[data-mode="heating"] .hero--video h1 .verb { color: #ff8a72; }
.hero--video .lede { color: rgba(255,255,255,.86); max-width: 46ch; }
.hero--video .hero__points li { color: rgba(255,255,255,.78); }
.hero--video .btn--light { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.55); }
.hero--video .btn--light:hover { background: #fff; color: var(--ink); border-color: #fff; }

/* Regler auf dem Video */
.thermal--onvideo {
    background: rgba(10, 20, 34, .55); backdrop-filter: blur(14px) saturate(130%);
    border: 1px solid rgba(255,255,255,.16); border-radius: 18px;
    padding: 1.2rem 1.3rem 1.4rem;
}
.thermal--onvideo .thermal__readout {
    position: static; background: none; padding: 0; margin-bottom: .9rem; backdrop-filter: none;
}
.thermal--onvideo .thermal__control { margin-top: 0; }
.thermal--onvideo .thermal__scale b,
.thermal--onvideo .thermal__scale span { color: rgba(255,255,255,.6); }
.thermal--onvideo .thermal__scale .is-active { color: #fff; }
.thermal--onvideo .thermal__hint { color: rgba(255,255,255,.68); }

/* Signatur: Temperaturregler */
.thermal { position: relative; }
.thermal__frame {
    position: relative; border-radius: 22px; overflow: hidden;
    box-shadow: var(--shadow); aspect-ratio: 4 / 3; background: var(--frost);
}
.thermal__frame img,
.thermal__frame video {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    transition: opacity .5s ease;
}
.thermal__frame img.is-hidden,
.thermal__frame video.is-hidden { opacity: 0; }
.thermal__readout {
    position: absolute; left: 1rem; bottom: 1rem; z-index: 2;
    background: rgba(12, 26, 43, .82); color: #fff; border-radius: 12px;
    padding: .6rem .9rem; font-family: var(--font-mono); backdrop-filter: blur(6px);
}
.thermal__readout b { font-size: 1.6rem; font-weight: 600; display: block; line-height: 1; }
.thermal__readout span { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: #9fc4e4; }

.thermal__control { margin-top: 1.1rem; }
.thermal__scale {
    display: flex; justify-content: space-between;
    font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em;
    text-transform: uppercase; color: var(--steel); margin-bottom: .5rem;
}
.thermal__scale b, .thermal__scale span { font-weight: 400; color: var(--steel); transition: color .3s ease; }
.thermal__scale .is-active { color: var(--accent); font-weight: 600; }
.thermal input[type="range"] {
    -webkit-appearance: none; appearance: none; width: 100%; height: 10px;
    border-radius: 999px; background: linear-gradient(90deg, var(--cool) 0%, #9dd3ea 45%, #ffb59c 62%, var(--warm) 100%);
    cursor: pointer; margin: 0;
}
.thermal input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 30px; height: 30px; border-radius: 50%;
    background: #fff; border: 3px solid var(--accent); box-shadow: 0 2px 8px rgba(12,26,43,.28);
}
.thermal input[type="range"]::-moz-range-thumb {
    width: 30px; height: 30px; border-radius: 50%;
    background: #fff; border: 3px solid var(--accent); box-shadow: 0 2px 8px rgba(12,26,43,.28);
}
.thermal__hint { font-size: .85rem; color: var(--steel); margin: .7rem 0 0; }

/* --------------------------------------------------------------- Stats */
.stats { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 780px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stats div { background: var(--paper); padding: 1.4rem 1.2rem; }
.stats b { font-family: var(--font-display); font-size: 1.7rem; display: block; letter-spacing: -.02em; }
.stats span { font-size: .84rem; color: var(--steel); }

/* --------------------------------------------------------------- Cards */
.grid { display: grid; gap: 1.2rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }

.card {
    background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.5rem 1.5rem 1.6rem; transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card__meta {
    font-family: var(--font-mono); font-size: .7rem; letter-spacing: .13em;
    text-transform: uppercase; color: var(--accent-deep); display: block; margin-bottom: .6rem;
}
.card h3 { margin-bottom: .45rem; }
.card p { color: var(--steel); font-size: .97rem; margin: 0; }

/* --------------------------------------------------------------- Steps */
.steps { counter-reset: step; display: grid; gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { background: var(--paper); padding: 1.6rem 1.4rem; list-style: none; }
.steps li::before {
    counter-increment: step; content: counter(step, decimal-leading-zero);
    font-family: var(--font-mono); font-size: .78rem; color: var(--accent);
    display: block; margin-bottom: .7rem; letter-spacing: .1em;
}
.steps h3 { font-size: 1.05rem; margin-bottom: .35rem; }
.steps p { color: var(--steel); font-size: .95rem; margin: 0; }

/* --------------------------------------------------------------- Split */
.split { display: grid; gap: clamp(1.8rem, 4vw, 3.5rem); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } .split--flip .split__media { order: 2; } }
.split__media img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.ticks { list-style: none; padding: 0; margin: 1.4rem 0 0; display: grid; gap: .6rem; }
.ticks li { padding-left: 1.9rem; position: relative; color: var(--ink); font-size: .98rem; }
.ticks li::before {
    content: ""; position: absolute; left: 0; top: .45em; width: 12px; height: 7px;
    border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
    transform: rotate(-45deg);
}

/* --------------------------------------------------------------- Table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: .96rem; }
.datatable tbody th { font-family: var(--font-body); font-size: inherit; text-transform: none; letter-spacing: 0; background: none; color: var(--ink); font-weight: 600; }

/* Auf schmalen Bildschirmen wird aus jeder Zeile eine Karte – kein Wischen noetig */
@media (max-width: 720px) {
    .table-wrap { overflow-x: visible; border: 0; background: none; border-radius: 0; }
    .datatable { min-width: 0; display: block; }
    .datatable thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .datatable tbody { display: grid; gap: .9rem; }
    .datatable tbody tr {
        display: block; background: var(--paper); border: 1px solid var(--line);
        border-radius: var(--radius); padding: .3rem 1.1rem .6rem;
    }
    .datatable tbody th,
    .datatable tbody td {
        display: flex; justify-content: space-between; align-items: baseline; gap: 1.2rem;
        padding: .6rem 0; border-bottom: 1px solid var(--line); text-align: right;
    }
    .datatable tbody tr > *:last-child { border-bottom: 0; }
    .datatable tbody th {
        font-family: var(--font-display); font-size: 1.08rem; font-weight: 700;
        letter-spacing: -.01em; padding-top: .9rem; text-align: left; display: block;
    }
    .datatable tbody th::before { display: none; }
    .datatable tbody td::before {
        content: attr(data-label); flex: 0 1 auto; text-align: left;
        font-family: var(--font-mono); font-size: .7rem; letter-spacing: .09em;
        text-transform: uppercase; color: var(--steel); padding-top: .18rem;
    }
}
th, td { text-align: left; padding: .95rem 1.1rem; border-bottom: 1px solid var(--line); }
th { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--steel); background: var(--frost); }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; }
.note { font-size: .88rem; color: var(--steel); margin-top: .9rem; }

/* ----------------------------------------------------------------- FAQ */
.faq { display: grid; gap: .7rem; }
.faq details {
    border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper);
    padding: 0 1.3rem; transition: border-color .2s ease;
}
.faq details[open] { border-color: var(--accent); }
.faq summary {
    cursor: pointer; list-style: none; padding: 1.15rem 2rem 1.15rem 0; position: relative;
    font-weight: 600; font-family: var(--font-display); font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
    font-family: var(--font-mono); font-size: 1.4rem; color: var(--accent); line-height: 1;
}
.faq details[open] summary::after { content: "–"; }
.faq p { padding-bottom: 1.2rem; color: var(--steel); margin: 0; }

/* ----------------------------------------------------------------- CTA */
.cta-band {
    background: var(--ink); color: #fff; border-radius: var(--radius);
    padding: clamp(2rem, 4vw, 3.2rem); display: grid; gap: 1.6rem; align-items: center;
    background-image: radial-gradient(circle at 90% 15%, var(--accent-tint), transparent 55%);
}
@media (min-width: 860px) { .cta-band { grid-template-columns: 1.4fr auto; } }
.cta-band h2 { color: #fff; margin-bottom: .4rem; }
.cta-band p { color: #b6c7d9; margin: 0; max-width: 56ch; }

/* ---------------------------------------------------------------- Form */
.form-shell { display: grid; gap: 2rem; align-items: start; grid-template-columns: 1fr; }
@media (min-width: 980px) { .form-shell { grid-template-columns: 1.35fr .65fr; } }

.form-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2.2rem); box-shadow: var(--shadow); }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-weight: 600; font-size: .93rem; margin-bottom: .4rem; }
.field .opt { font-weight: 400; color: var(--steel); font-size: .84rem; }
.field input, .field select, .field textarea {
    width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
    padding: .8rem .9rem; border: 1.5px solid var(--line); border-radius: 10px;
    background: var(--paper); transition: border-color .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-tint); }
.field textarea { min-height: 120px; resize: vertical; }
.field--error input, .field--error select { border-color: var(--warm); }
.field .err { color: var(--warm-deep); font-size: .86rem; margin-top: .35rem; display: block; }
.row { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 620px) { .row--2 { grid-template-columns: 1fr 1fr; } .row--zip { grid-template-columns: .5fr 1fr; } }

.choice { display: grid; gap: .5rem; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.choice label {
    display: flex; align-items: center; gap: .5rem; border: 1.5px solid var(--line);
    border-radius: 10px; padding: .7rem .8rem; cursor: pointer; font-weight: 500; font-size: .95rem;
}
.choice input { width: auto; accent-color: var(--accent); }
.choice label:has(input:checked) { border-color: var(--accent); background: var(--accent-tint); }

.consent { display: flex; gap: .7rem; align-items: flex-start; font-size: .88rem; color: var(--steel); line-height: 1.5; margin: 1.2rem 0; }
.consent input { margin-top: .25rem; accent-color: var(--accent); width: 18px; height: 18px; flex: none; }

.alert { border-radius: 10px; padding: .9rem 1.1rem; margin-bottom: 1.4rem; font-size: .94rem; }
.alert--error { background: rgba(224,52,42,.08); border: 1px solid rgba(224,52,42,.3); color: var(--warm-deep); }

.aside-card { background: var(--frost); border-radius: var(--radius); padding: 1.6rem; }
.aside-card h3 { font-size: 1.05rem; }
.aside-card ul { padding-left: 1.1rem; margin: 0; color: var(--steel); font-size: .95rem; }
.aside-card li { margin-bottom: .5rem; }
.aside-card .big { font-family: var(--font-mono); font-size: 1.1rem; color: var(--ink); text-decoration: none; font-weight: 600; }

/* --------------------------------------------------------- Breadcrumbs */
.crumbs { font-size: .84rem; color: var(--steel); padding: 1rem 0 0; }
.crumbs a { color: var(--steel); }

/* -------------------------------------------------------------- Footer */
.footer { background: var(--ink); color: #93a8bf; padding: clamp(2.8rem, 5vw, 4rem) 0 2rem; margin-top: 0; }
.footer__grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 760px) { .footer__grid { grid-template-columns: 1.6fr 1fr 1fr; } }
.footer h4 { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: #6f8aa6; margin: 0 0 1rem; font-weight: 500; }
.footer a { color: #d5e3f0; text-decoration: none; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; font-size: .95rem; }
.footer__logo { height: 44px; width: auto; margin-bottom: 1rem; background: #fff; border-radius: 8px; padding: 6px 10px; }
.footer__disclaimer {
    margin: 2.4rem 0 0; padding-top: 1.6rem; border-top: 1px solid rgba(255,255,255,.12);
    font-size: .78rem; line-height: 1.6; opacity: .6; max-width: 100ch;
}
.footer__bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 2.5rem; padding-top: 1.4rem; font-size: .84rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }

/* ------------------------------------------------------------- Mobile  */
@media (max-width: 1000px) {
    .burger { display: block; }
    .header__phone { display: none; }
    .nav {
        position: absolute; top: 100%; left: 0; right: 0; background: var(--paper);
        border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch;
        padding: 1rem 1.25rem 1.6rem; gap: .1rem; display: none;
        max-height: 76vh; overflow-y: auto; box-shadow: 0 18px 30px rgba(12,26,43,.12);
    }
    .nav.is-open { display: flex; }
    .nav a { padding: .85rem .4rem; border-bottom: 1px solid var(--line); border-radius: 0; }
    .nav .btn { margin-top: 1rem; justify-content: center; border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
    /* Ohne Bewegung: Standbilder statt Video */
    .hero__video { opacity: 1; }
    #vid-cooling { background: url("/assets/img/hero-heat-poster.jpg") center/cover no-repeat; }
    #vid-heating { background: url("/assets/img/hero-cold-poster.jpg") center/cover no-repeat; }
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
    .header, .footer, .cta-band, .thermal__control, .hero__media { display: none; }
    .hero--video { min-height: 0; color: var(--ink); background: none; }
    .hero--video h1, .hero--video .lede { color: var(--ink); text-shadow: none; }
}