:root {
    --ink: #0f1b2d;
    --ink-2: #26344a;
    --muted: #5d6b80;
    --line: #e3e8ef;
    --bg: #f6f8fb;
    --card: #ffffff;
    --accent: #f59f00;
    --accent-2: #e67700;
    --fibre: #0c8599;
    --vent: #1f6fd1;
    --solar: #f08c00;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(15, 27, 45, .05), 0 8px 24px rgba(15, 27, 45, .06);
    --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { width: min(var(--max), 100% - 2.5rem); margin-inline: auto; }

/* ---- Header ---- */
.top {
    position: sticky; top: 0; z-index: 20;
    background: rgba(15, 27, 45, .92); backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: #fff; }
.brand-mark {
    width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--ink); font-weight: 800; font-size: .95rem; letter-spacing: -.02em;
}
.brand-name { font-weight: 800; letter-spacing: .06em; font-size: 1.02rem; }
.brand-name span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav a { color: #c9d4e3; text-decoration: none; font-size: .93rem; }
.nav a:hover { color: #fff; }
.nav .btn { color: var(--ink); }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .72rem 1.15rem; border-radius: 10px; font-weight: 650; font-size: .95rem;
    text-decoration: none; border: 1px solid transparent; transition: transform .08s, box-shadow .15s, background .15s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-accent { background: linear-gradient(180deg, #ffb31a, var(--accent)); color: var(--ink); box-shadow: 0 6px 18px rgba(245, 159, 0, .28); }
.btn-accent:hover { background: linear-gradient(180deg, #ffbd35, #ffa60a); }
.btn-ghost { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .22); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ---- Hero ---- */
.hero {
    position: relative; overflow: hidden; color: #eef3fa;
    background:
        radial-gradient(900px 480px at 85% -10%, rgba(245, 159, 0, .22), transparent 60%),
        radial-gradient(700px 420px at -10% 110%, rgba(12, 133, 153, .28), transparent 60%),
        linear-gradient(100deg, rgba(15, 27, 45, .97) 0%, rgba(15, 27, 45, .9) 45%, rgba(15, 27, 45, .6) 100%),
        url("img/baustelle-bagger.jpg") center 40% / cover no-repeat,
        #0f1b2d;
    padding: 5.5rem 0 5rem;
}
.hero::after {
    /* Fibre routes: thin lines running under the page like ducts under a street. */
    content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
    background-image:
        repeating-linear-gradient(90deg, transparent 0 58px, rgba(255, 255, 255, .05) 58px 59px),
        repeating-linear-gradient(0deg, transparent 0 58px, rgba(255, 255, 255, .04) 58px 59px);
    mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr .9fr; gap: 3rem; align-items: center; }
.eyebrow {
    display: inline-flex; align-items: center; gap: .5rem; font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
    color: #ffd166; background: rgba(245, 159, 0, .12); border: 1px solid rgba(245, 159, 0, .3); padding: .35rem .75rem; border-radius: 999px;
}
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.08; letter-spacing: -.02em; margin: 1.1rem 0 1rem; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lead { font-size: 1.13rem; color: #c3cfdf; max-width: 38rem; margin: 0 0 1.8rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; }

.hero-card {
    background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); border-radius: 18px;
    padding: 1.4rem 1.5rem; backdrop-filter: blur(6px);
}
.hero-card h2 { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: #9fb1c8; margin: 0 0 1rem; }
.facts { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; }
.facts li { display: flex; gap: .8rem; align-items: flex-start; }
.facts .ico {
    width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0; display: grid; place-items: center;
    background: rgba(245, 159, 0, .14); color: #ffc94d;
}
.facts .ico svg { width: 20px; height: 20px; }
.facts b { display: block; color: #fff; font-size: .98rem; }
.facts span { color: #a9b8cc; font-size: .88rem; }

/* ---- Trust strip ---- */
.strip { background: #fff; border-bottom: 1px solid var(--line); }
.strip .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding: 1.3rem 0; }
.strip div { display: flex; flex-direction: column; }
.strip b { font-size: 1.05rem; }
.strip span { font-size: .85rem; color: var(--muted); }

/* ---- Sections ---- */
section.block { padding: 5rem 0; }
section.block.alt { background: #fff; border-block: 1px solid var(--line); }
.head { max-width: 44rem; margin-bottom: 2.4rem; }
.kicker { color: var(--accent-2); font-weight: 750; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; }
.head h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: -.015em; line-height: 1.15; margin: .5rem 0 .7rem; }
.head p { color: var(--muted); margin: 0; font-size: 1.05rem; }

.services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.service {
    --c: var(--fibre);
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 1.6rem 1.6rem 1.4rem; position: relative; overflow: hidden;
}
.service::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--c); }
.service.vent { --c: var(--vent); }
.service.solar { --c: var(--solar); }
.service.earth { --c: #6b4f2a; }
.service .tag { display: inline-flex; align-items: center; gap: .45rem; font-size: .78rem; font-weight: 700; color: var(--c); text-transform: uppercase; letter-spacing: .08em; }
.service .tag svg { width: 18px; height: 18px; }
.service h3 { font-size: 1.28rem; margin: .45rem 0 .5rem; }
.service p { color: var(--muted); margin: 0 0 .9rem; }
.service ul { margin: 0; padding: 0; list-style: none; display: grid; gap: .4rem; }
.service li { position: relative; padding-left: 1.4rem; font-size: .95rem; }
.service li::before { content: ""; position: absolute; left: 0; top: .5em; width: .55rem; height: .55rem; border-radius: 2px; background: var(--c); opacity: .85; }
.service.primary { grid-column: 1 / -1; display: grid; grid-template-columns: 1.1fr 1fr; gap: 1.5rem; align-items: start; }
.service.primary h3 { font-size: 1.5rem; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; counter-reset: step; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.2rem; counter-increment: step; }
.step::before {
    content: counter(step, decimal-leading-zero); display: block; font-weight: 800; font-size: 1.5rem; color: var(--accent);
    letter-spacing: -.02em; margin-bottom: .35rem;
}
.step h3 { font-size: 1.05rem; margin: 0 0 .35rem; }
.step p { margin: 0; color: var(--muted); font-size: .93rem; }

.equip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.equip > div { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 1.1rem 1.2rem; display: flex; gap: .85rem; align-items: center; }
.equip .ico { width: 44px; height: 44px; border-radius: 11px; background: #fff3db; color: var(--accent-2); display: grid; place-items: center; flex-shrink: 0; }
.equip .ico svg { width: 24px; height: 24px; }
.equip b { display: block; }
.equip span { color: var(--muted); font-size: .88rem; }

.papers { margin-top: 1.4rem; display: flex; flex-wrap: wrap; gap: .5rem; }
.papers span { background: #e8f6ee; color: #1f6f3f; border: 1px solid #c3e6d0; border-radius: 999px; padding: .3rem .8rem; font-size: .87rem; font-weight: 600; }

/* ---- Gallery ---- */
.gallery-title { display: flex; align-items: center; gap: .6rem; font-size: 1.15rem; margin: 2.2rem 0 1rem; }
.gallery-title:first-of-type { margin-top: 0; }
.gallery-title .dot { width: 12px; height: 12px; border-radius: 3px; background: var(--fibre); }
.gallery-title .dot.vent { background: var(--vent); }
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 190px; grid-auto-flow: dense; gap: .8rem; }
.shot { position: relative; overflow: hidden; border-radius: 12px; background: #dfe5ec; box-shadow: var(--shadow); }
.shot.tall { grid-row: span 2; }
.shot.wide { grid-column: span 2; }
.shot img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.shot:hover img { transform: scale(1.04); }
.shot span {
    position: absolute; inset: auto 0 0 0; padding: 1.6rem .85rem .7rem; color: #fff; font-size: .86rem; font-weight: 600;
    background: linear-gradient(180deg, transparent, rgba(10, 18, 30, .82));
}

/* ---- Contact ---- */
.contact {
    background: linear-gradient(160deg, #13233a, #0f1b2d); color: #eef3fa; border-radius: 22px;
    padding: 2.6rem; display: grid; grid-template-columns: 1.2fr 1fr; gap: 2.5rem; align-items: center; box-shadow: 0 20px 50px rgba(15, 27, 45, .25);
}
.contact h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: .4rem 0 .7rem; letter-spacing: -.015em; }
.contact p { color: #b9c6d8; margin: 0 0 1.4rem; }
.contact .kicker { color: #ffc94d; }
.channels { display: grid; gap: .7rem; }
.channel {
    display: flex; align-items: center; gap: .9rem; text-decoration: none; color: #fff;
    background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); border-radius: 12px; padding: .9rem 1rem; transition: background .15s;
}
.channel:hover { background: rgba(255, 255, 255, .12); }
.channel .ico { width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; background: rgba(245, 159, 0, .16); color: #ffc94d; flex-shrink: 0; }
.channel .ico svg { width: 22px; height: 22px; }
.channel.wa .ico { background: rgba(37, 211, 102, .16); color: #4be07f; }
.channel small { display: block; color: #9fb1c8; font-size: .8rem; }
.channel b { font-size: 1.02rem; }

/* ---- Footer ---- */
footer { padding: 2.5rem 0 3rem; color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: flex-start; }
footer .legal { display: flex; gap: 1.2rem; }
footer a { color: var(--ink-2); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer address { font-style: normal; }

/* ---- Legal pages ---- */
.doc { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 2.4rem clamp(1.2rem, 4vw, 3rem); margin: 3rem auto; max-width: 820px; }
.doc h1 { margin-top: 0; font-size: 2rem; letter-spacing: -.015em; }
.doc h2 { font-size: 1.15rem; margin: 2rem 0 .5rem; }
.doc p, .doc li { color: var(--ink-2); }
.doc dl { display: grid; grid-template-columns: max-content 1fr; gap: .45rem 1.2rem; margin: 0; }
.doc dt { color: var(--muted); }
.doc dd { margin: 0; font-weight: 550; }

/* ---- Responsive ---- */
@media (max-width: 960px) {
    .hero .wrap { grid-template-columns: 1fr; gap: 2rem; }
    .strip .wrap { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .equip { grid-template-columns: 1fr 1fr; }
    .contact { grid-template-columns: 1fr; padding: 2rem 1.5rem; }
    .service.primary { grid-template-columns: 1fr; }
    .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 170px; }
}
@media (max-width: 720px) {
    .nav > a:not(.btn) { display: none; }
    .hero { padding: 3.5rem 0 3.2rem; }
    .services { grid-template-columns: 1fr; }
    .steps, .equip { grid-template-columns: 1fr; }
    section.block { padding: 3.5rem 0; }
    .doc dl { grid-template-columns: 1fr; gap: .1rem; }
    .doc dd { margin-bottom: .6rem; }
    .gallery { grid-auto-rows: 140px; gap: .5rem; }
}
@media (max-width: 420px) {
    .wrap { width: calc(100% - 2rem); }
    .brand-name { font-size: .9rem; white-space: nowrap; }
    .brand-mark { width: 32px; height: 32px; font-size: .85rem; }
    .nav .btn { padding: .5rem .75rem; font-size: .82rem; }
    .hero-actions .btn { width: 100%; }
    .strip .wrap { grid-template-columns: 1fr; }
    .gallery { grid-template-columns: 1fr 1fr; grid-auto-rows: 120px; }
    .contact { padding: 1.6rem 1.1rem; }
}

/* ---- Language switch ---- */
.lang { display: inline-flex; gap: 2px; background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .14); border-radius: 8px; padding: 2px; }
.nav .lang a { color: #b9c6d8; font-size: .76rem; font-weight: 700; letter-spacing: .04em; padding: .3rem .45rem; border-radius: 6px; line-height: 1; }
.nav .lang a:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.nav .lang a.on { color: var(--ink); background: var(--accent); }
.gallery-title .dot.solar { background: var(--solar); }
@media (max-width: 720px) {
    .nav { gap: .6rem; }
    .nav .lang { display: inline-flex; }
}
@media (max-width: 480px) {
    /* The hero carries the same call to action; the header keeps the brand and the languages. */
    .nav > .btn { display: none; }
}

/* ---- About ---- */
.about { background: #fff; border-bottom: 1px solid var(--line); }
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 3rem; align-items: center; }
.about-grid .head { margin-bottom: 0; }
.about-grid .head p + p { margin-top: .9rem; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
.stats div { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.2rem; }
.stats b { display: block; font-size: 2.3rem; line-height: 1; letter-spacing: -.03em; color: var(--accent-2); margin-bottom: .4rem; }
.stats span { color: var(--ink-2); font-size: .93rem; font-weight: 550; }

/* ---- FAQ ---- */
.faq-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 2.5rem; align-items: start; }
.faq { display: grid; gap: .6rem; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 0 1.2rem; box-shadow: var(--shadow); }
.faq summary { cursor: pointer; list-style: none; font-weight: 650; padding: 1rem 0; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-2); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 1rem; color: var(--ink-2); }

/* ---- Blog ---- */
.head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 1.5rem; max-width: none; }
.head-row > div { max-width: 44rem; }
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.post { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s; }
.post:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(15, 27, 45, .12); }
.post img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.post > div { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; gap: .45rem; flex: 1; }
.post time { font-size: .8rem; color: var(--muted); }
.post h3 { font-size: 1.08rem; line-height: 1.3; margin: 0; }
.post p { margin: 0; color: var(--muted); font-size: .92rem; flex: 1; }
.post .more { color: var(--accent-2); font-weight: 650; font-size: .9rem; }

.page-hero { background: linear-gradient(160deg, #13233a, #0f1b2d); color: #eef3fa; padding: 4rem 0 3.2rem; }
.page-hero .kicker { color: #ffc94d; }
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -.02em; margin: .5rem 0 .6rem; }
.page-hero p { color: #b9c6d8; max-width: 44rem; margin: 0; font-size: 1.08rem; }

.narrow { width: min(780px, 100% - 2.5rem); margin-inline: auto; }
.article-head { background: linear-gradient(160deg, #13233a, #0f1b2d); color: #eef3fa; padding: 3.2rem 0 5.5rem; }
.article-head .back { color: #ffc94d; text-decoration: none; font-weight: 600; font-size: .9rem; }
.article-head h1 { font-size: clamp(1.8rem, 3.8vw, 2.6rem); line-height: 1.15; letter-spacing: -.02em; margin: 1rem 0 .8rem; }
.lead-dark { color: #c3cfdf; font-size: 1.1rem; margin: 0 0 1rem; }
.article-head time { color: #9fb1c8; font-size: .88rem; }
.article-img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; border-radius: 16px; margin: -3.5rem 0 2rem; box-shadow: 0 18px 40px rgba(15, 27, 45, .25); }
.article h2 { font-size: 1.35rem; margin: 2rem 0 .6rem; letter-spacing: -.01em; }
.article p, .article li { font-size: 1.05rem; line-height: 1.7; color: var(--ink-2); }
.article ul { padding-left: 1.2rem; }
.article li { margin: .3rem 0; }
.article .note { font-size: .9rem; color: var(--muted); border-left: 3px solid var(--line); padding-left: .9rem; margin-top: 2rem; }
.article-cta { margin: 2.5rem 0 4rem; background: #fff7e6; border: 1px solid #ffe0a3; border-radius: 16px; padding: 1.5rem 1.6rem; display: flex; gap: 1.5rem; align-items: center; justify-content: space-between; }
.article-cta h2 { margin: 0 0 .3rem; font-size: 1.2rem; }
.article-cta p { margin: 0; font-size: .98rem; }

/* ---- Contact page ---- */
.contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 2rem; align-items: start; }
.request { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 1.8rem; box-shadow: var(--shadow); display: grid; gap: 1rem; }
.request .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.request label { display: flex; flex-direction: column; gap: .35rem; font-size: .88rem; font-weight: 600; color: var(--ink-2); }
.request input, .request select, .request textarea {
    font: inherit; font-weight: 400; font-size: .98rem; color: var(--ink); background: var(--bg); border: 1px solid #d3dae3; border-radius: 10px; padding: .7rem .8rem;
}
.request input:focus, .request select:focus, .request textarea:focus { outline: 2px solid #ffd27a; border-color: var(--accent); background: #fff; }
.request textarea { resize: vertical; }
.form-actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.form-actions .btn { border: 0; cursor: pointer; font: inherit; font-weight: 650; }
.btn-wa { background: #25d366; color: #0b3d20; }
.btn-wa:hover { background: #2fe072; }
.form-note { margin: 0; color: #b42318; font-weight: 600; font-size: .9rem; }
.form-privacy { margin: 0; color: var(--muted); font-size: .85rem; }
.contact-side { display: grid; gap: .7rem; }
.contact-side h2 { font-size: 1rem; margin: .4rem 0 .2rem; color: var(--ink-2); }
.contact-side address { font-style: normal; color: var(--ink-2); line-height: 1.6; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.1rem; }
.channel.light { background: #fff; border: 1px solid var(--line); color: var(--ink); }
.channel.light:hover { background: #fffaf0; }
.channel.light small { color: var(--muted); }
.channel.light .ico { background: #fff3db; color: var(--accent-2); }
.channel.light.wa .ico { background: #e3f9eb; color: #1a9d4b; }

@media (max-width: 960px) {
    .about-grid, .faq-wrap, .contact-grid { grid-template-columns: 1fr; gap: 1.8rem; }
    .posts { grid-template-columns: 1fr 1fr; }
    .head-row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
    .posts { grid-template-columns: 1fr; }
    .request { padding: 1.2rem; }
    .request .row2 { grid-template-columns: 1fr; }
    .article-cta { flex-direction: column; align-items: flex-start; }
    .stats b { font-size: 1.9rem; }
}

/* The article intro sits on the dark header; the generic article paragraph colour must not reach it. */
.article .article-head .lead-dark { color: #c3cfdf; font-size: 1.1rem; }