/* Das Sanitär-Heft · landing alemana modelada sobre «El Cuaderno del Fontanero»: fondo oscuro + acento cálido, tablets, carrusel de páginas.
   Paleta propia: azul noche (tapas) + naranja; Manrope para títulos, Figtree para texto. */
:root{--navy:#12355B;--nacht:#0B2440;--blau:#1D63B5;--orange:#F59E1B;--orange-d:#9C5700;--text:#1E293B;--grau:#55657A;--sand:#F4F1EA;--linie:#E2E8F0;--ok:#00873A}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font:400 17px/1.55 Figtree,system-ui,sans-serif;color:var(--text);background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{font-family:Manrope,system-ui,sans-serif;letter-spacing:-.015em;line-height:1.12}
h2{font-size:clamp(27px,5.4vw,40px);font-weight:800;text-align:center;max-width:820px;margin:0 auto 14px}
h3{font-weight:800;font-size:20px}
section,header{padding:64px 18px}
section>*,header>*{max-width:1040px;margin-left:auto;margin-right:auto}
.kicker{text-align:center;font:800 13px Manrope;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-d);margin-bottom:10px}
.unter{text-align:center;color:var(--grau);max-width:660px;margin:0 auto 30px;font-size:18px}
.balken{background:var(--orange);color:var(--nacht);text-align:center;font:700 14px Manrope;padding:9px 12px;letter-spacing:.02em}
.balken b{font-weight:800}

/* inicio */
.hero{background:var(--navy);color:#fff;text-align:center;padding-top:26px;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:28px 28px}
.hero-bild{margin:0 auto 18px;width:100%;max-width:760px;border-radius:14px}
.etikett{display:inline-block;border:1px solid rgba(255,255,255,.3);border-radius:99px;padding:6px 14px;font:700 13px Manrope;letter-spacing:.06em;margin-bottom:16px}
.hero h1{font-size:clamp(31px,6.6vw,54px);font-weight:800;max-width:860px;margin:0 auto 16px}
.hero h1 mark{background:none;color:var(--orange)}
.lead{font-size:19px;color:#D6E2F0;max-width:680px;margin:0 auto 26px}
.cta{display:block;width:100%;max-width:520px;margin:0 auto;background:var(--ok);color:#fff;text-decoration:none;text-align:center;
  font:800 19px/1.2 Manrope;text-transform:uppercase;letter-spacing:.02em;padding:20px 22px;border-radius:12px;box-shadow:0 6px 0 #006b2c,0 12px 26px rgba(0,0,0,.22);transition:transform .15s}
.cta:hover{transform:translateY(-2px)} .cta:active{transform:translateY(3px);box-shadow:0 2px 0 #006b2c}
.cta.klein{max-width:380px;font-size:16px;padding:16px;margin-top:34px;background:var(--navy);box-shadow:0 5px 0 var(--nacht)}
.sicher{font-size:14px;margin-top:14px;opacity:.85;text-align:center}
.drei{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:38px}
.drei li{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:16px 12px}
.drei b{display:block;font:800 16px Manrope;margin-bottom:4px} .drei span{font-size:14.5px;color:#C5D3E3}

/* fondos */
.hell{background:#fff} .sand{background:var(--sand)}
.dunkel{background:var(--nacht);color:#fff} .dunkel .kicker{color:var(--orange)}

/* carrusel de páginas */
.hojas{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 18px;max-width:none;-webkit-overflow-scrolling:touch}
.hojas img{flex:none;width:min(300px,74vw);border-radius:8px;box-shadow:0 10px 28px rgba(18,53,91,.18);scroll-snap-align:center;cursor:zoom-in;border:1px solid var(--linie)}
.wisch{text-align:center;color:var(--grau);font-size:14px}

/* lo que vas a poder */
.kann{list-style:none;max-width:760px;margin-top:26px;display:grid;gap:12px}
.kann li{display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.06);border-left:4px solid var(--orange);border-radius:10px;padding:16px 18px;font-size:18px}
.kann i{font-style:normal;font-size:24px;line-height:1}

/* por qué un dibujo */
.zwei{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:34px;align-items:center;margin-top:26px}
.zwei .zoomable img{border-radius:10px;box-shadow:0 12px 32px rgba(18,53,91,.18);cursor:zoom-in}
.text p{margin-bottom:14px;font-size:18px}
.merk{font:700 19px/1.45 Manrope;color:var(--navy);border-left:4px solid var(--orange);padding-left:16px}

/* esto vs esto */
.vergleich{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:26px;max-width:820px}
.vergleich figure{background:#fff;border-radius:14px;padding:14px;box-shadow:0 6px 20px rgba(0,0,0,.06)}
.vergleich img{border-radius:6px;aspect-ratio:3/4;object-fit:cover;object-position:top;cursor:zoom-in}
.vergleich .alt img{filter:grayscale(1) contrast(.9);opacity:.85}
.vergleich figcaption{margin-top:12px;display:grid;gap:6px;font-size:15px}
.vergleich figcaption b{font:800 18px Manrope}
.vergleich .alt figcaption span:before{content:"– ";color:#94A3B8}
.vergleich .neu figcaption b{color:var(--blau)} .vergleich .neu figcaption span:before{content:"✓ ";color:var(--ok);font-weight:700}

/* índice */
.teile{list-style:none;display:grid;gap:12px;max-width:820px}
.teile li{display:flex;gap:18px;align-items:flex-start;border:1px solid var(--linie);border-radius:14px;padding:18px 20px}
.teile li>b{flex:none;width:52px;height:52px;border-radius:12px;background:var(--navy);color:var(--orange);font:800 22px/52px Manrope;text-align:center}
.teile li.schluss>b{background:var(--orange);color:var(--navy)}
.teile h3{margin-bottom:4px} .teile p{color:var(--grau);font-size:16px}

/* regalos */
.gaben{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}
.gaben article{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:20px}
.gaben img{width:62%;margin:0 auto 16px;border-radius:8px;box-shadow:0 14px 30px rgba(0,0,0,.35)}
.tag{font:800 13px Manrope;letter-spacing:.06em;text-transform:uppercase;color:var(--orange);margin-bottom:6px}
.tag s{color:#C5D3E3} .gaben h3{margin-bottom:8px} .gaben p{color:#D6E2F0;font-size:16px}

/* oferta */
.angebot{background:var(--navy);color:#fff;text-align:center}
.angebot>*{max-width:560px}
.angebot img{border-radius:12px;margin:18px auto;max-width:100%}
.wert{list-style:none;text-align:left;background:#fff;color:var(--text);border-radius:14px;padding:6px 18px;margin-bottom:18px}
.wert li{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed var(--linie);font-size:16px}
.wert li:last-child{border:0} .wert s{color:var(--grau);white-space:nowrap} .wert em{font-style:normal;font-weight:700;color:var(--ok)}
.gesamt{font-size:18px;color:#C5D3E3}
.heute{font:800 22px Manrope;margin:6px 0} .heute b{display:block;font-size:64px;line-height:1.05;color:var(--orange)}
.spar{display:inline-block;background:var(--orange);color:var(--nacht);font:800 15px Manrope;border-radius:99px;padding:6px 16px;margin-bottom:22px}
.angebot .klein{font-size:14px;color:#C5D3E3;margin-top:16px}

/* para quién */
.fuer{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
.fuer article{border:1px solid var(--linie);border-radius:16px;overflow:hidden}
.fuer img{aspect-ratio:4/3;object-fit:cover;width:100%}
.fuer h3{padding:16px 18px 6px} .fuer p{padding:0 18px 20px;color:var(--grau);font-size:16px}

/* marca */
.marke{display:grid;grid-template-columns:260px 1fr;gap:34px;align-items:center;max-width:900px}
.marke img{border-radius:18px} .marke h2{text-align:left;margin-left:0} .marke .kicker{text-align:left} .marke p{margin-bottom:12px}

/* resumen y garantía */
.haken{list-style:none;max-width:760px;margin:24px auto 26px;display:grid;gap:10px}
.haken li{padding-left:32px;position:relative;font-size:17px}
.haken li:before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--ok);color:#fff;font:800 13px/22px Manrope;text-align:center}
.preiszeile{text-align:center;font:800 22px Manrope;margin-bottom:18px} .preiszeile s{color:var(--grau);font-weight:600;margin-right:10px} .preiszeile b{color:var(--navy);font-size:40px}
.garantie{display:flex;gap:18px;max-width:760px;margin-top:40px;background:var(--sand);border-radius:16px;padding:24px}
.garantie i{font-style:normal;font-size:44px;line-height:1} .garantie h3{margin-bottom:8px}

/* FAQ */
details{max-width:760px;background:#fff;border-radius:12px;margin-bottom:10px;border:1px solid var(--linie)}
summary{cursor:pointer;font:700 17px Manrope;padding:18px 20px;list-style:none;position:relative;padding-right:46px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:20px;top:14px;font-size:24px;color:var(--orange-d)}
details[open] summary:after{content:"–"}
details p{padding:0 20px 18px;color:var(--grau)}

/* cierre */
.ende-text{max-width:640px;font-size:19px;text-align:center;display:grid;gap:12px;margin-top:20px;color:#D6E2F0}
.ende-text b{color:#fff}
.kurz{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin:26px auto;font-size:16px}
.kurz li:before{content:"✓ ";color:var(--orange);font-weight:800}
footer{background:var(--nacht);color:#8EA3BB;text-align:center;font-size:13px;padding:26px 18px 96px;display:grid;gap:8px;border-top:1px solid rgba(255,255,255,.08)}
footer p{max-width:760px;margin:0 auto}

/* botón fijo en el celular */
.leiste{position:fixed;left:0;right:0;bottom:0;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(11,36,64,.96);transform:translateY(110%);transition:transform .25s;z-index:20}
.leiste.on{transform:none}
.leiste a{display:block;background:var(--ok);color:#fff;text-align:center;text-decoration:none;font:800 17px Manrope;padding:15px;border-radius:10px}
@media (min-width:900px){.leiste{display:none}}

/* zoom */
.zoom-caja{position:fixed;inset:0;background:rgba(5,15,28,.94);z-index:50;display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:none}
.zoom-caja[hidden]{display:none}
.zoom-caja img{max-width:94vw;max-height:88vh;transform-origin:center;border-radius:6px}
.zoom-cerrar{position:absolute;top:12px;right:14px;width:46px;height:46px;border:0;border-radius:50%;background:#fff;font:700 28px/46px system-ui;cursor:pointer;z-index:2}
.zoom-ayuda{position:absolute;bottom:16px;left:0;right:0;text-align:center;color:#C5D3E3;font-size:14px}

@media (max-width:760px){
  section,header{padding:48px 16px}
  .drei{grid-template-columns:1fr;gap:10px;margin-top:28px} .drei li{text-align:left}
  .zwei,.gaben,.fuer{grid-template-columns:1fr}
  .vergleich{grid-template-columns:1fr 1fr;gap:10px} .vergleich figure{padding:8px} .vergleich figcaption{font-size:13px} .vergleich figcaption b{font-size:15px}
  .marke{grid-template-columns:1fr;text-align:center} .marke img{max-width:220px;margin:0 auto} .marke h2,.marke .kicker{text-align:center;margin-left:auto}
  .teile li{padding:14px} .teile li>b{width:42px;height:42px;line-height:42px;font-size:18px}
  .cta{font-size:17px;padding:18px 16px}
  .heute b{font-size:54px}
  .garantie{flex-direction:column;gap:10px}
}
a:focus-visible,summary:focus-visible,.hojas img:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.cta,.leiste{transition:none}}