@font-face {
  font-family: "Montserrat";
  src: url("fonts/montserrat-latin.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}

:root {
  --ink: #ffffff;
  --ink-2: #f6f6f6;
  --line: #e4e4e4;
  --text: #0d0d0d;
  --muted: #5f6368;
  --paper: #0d0d0d;
  --paper-text: #ffffff;
  --paper-muted: #a3a6ab;
  --accent: #0d0d0d;
  --c-tel: #e5312b;
  --c-net: #1f6feb;
  --c-sun: #f5b800;
  --max: 1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--ink);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.logo { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.logo b { font-size: 36px; line-height: 1; font-weight: 700; letter-spacing: -0.02em; }
.logo span { font-size: 14px; font-weight: 500; letter-spacing: 0.42em; color: var(--muted); }
.nav { display: flex; gap: 28px; list-style: none; }
.nav a { text-decoration: none; font-size: 14px; font-weight: 500; color: var(--muted); transition: color .2s; }
.nav a:hover { color: var(--text); }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  padding: 140px 0 120px;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 70%);
  opacity: .6;
}
.hero .wrap { position: relative; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 600;
  letter-spacing: 0.24em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 68px); line-height: 1.08;
  font-weight: 600; letter-spacing: -0.025em; max-width: 18ch;
}
.contact h2 .dot { color: var(--c-tel); }
.hero p { margin-top: 28px; font-size: clamp(17px, 2vw, 20px); color: var(--muted); max-width: 52ch; }
.btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 44px; }
.btn {
  display: inline-block; padding: 14px 26px; border-radius: 2px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.04em; text-decoration: none;
  border: 1px solid var(--text); transition: background .2s, color .2s;
}
.btn.primary { background: var(--text); color: var(--ink); }
.btn.primary:hover { background: transparent; color: var(--text); }
.btn:not(.primary):hover { background: var(--text); color: var(--ink); }

/* Sections */
section { padding: 110px 0; }
.label {
  font-size: 12px; font-weight: 600; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 18px;
}
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.15; font-weight: 600; letter-spacing: -0.02em; }
.split { display: grid; grid-template-columns: 1fr 1.3fr; gap: 64px; align-items: start; }
.prose p + p { margin-top: 18px; }
.prose p { color: var(--muted); }

/* Sectors */
.sectors { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); margin-top: 64px; }
.sector + .sector { border-left: 1px solid var(--line); }
.sector { background: var(--ink); display: flex; flex-direction: column; }
.sector-visual {
  position: relative; height: 200px; display: grid; place-items: center;
  border-bottom: 1px solid var(--line);
  background-color: var(--ink-2);
  background-image: radial-gradient(var(--line) 1.2px, transparent 1.2px);
  background-size: 16px 16px;
  overflow: hidden;
}
.sector-body { padding: 30px 28px 34px; flex: 1; display: flex; flex-direction: column; }
.sector h3 { font-size: 21px; font-weight: 600; margin-bottom: 10px; }
.sector p { font-size: 15px; color: var(--muted); }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 20px; }
.tags li { font-size: 12px; font-weight: 500; padding: 5px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--text); background: var(--ink); }

/* Sector illustrations */
.ico { width: 190px; height: auto; overflow: visible; fill: none; stroke: var(--text); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.ico .fill { fill: var(--text); stroke: none; }
.sector:hover .ico { transform: scale(1.06); }

.ico-tel .waves path { stroke: var(--c-tel); stroke-width: 2.5; opacity: .15; animation: wave 2.4s ease-in-out infinite; }
.ico-tel .w2 { animation-delay: .3s !important; }
.ico-tel .w3 { animation-delay: .6s !important; }
@keyframes wave { 0%, 100% { opacity: .15; } 40% { opacity: 1; } }

.ico-net .links path { stroke: var(--line); stroke-width: 2; }
.ico-net .flow path { stroke: var(--c-net); stroke-width: 2.5; stroke-dasharray: 3 9; animation: flow 1.2s linear infinite; }
.ico-net .flow .rev { animation-direction: reverse; }
.ico-net .nodes circle { fill: var(--ink-2); }
.ico-net .pulse { stroke: var(--c-net); transform-origin: 80px 60px; animation: pulse 2.4s ease-out infinite; }
@keyframes flow { to { stroke-dashoffset: -24; } }
@keyframes pulse { from { transform: scale(1); opacity: .6; } to { transform: scale(2.6); opacity: 0; } }

.ico-energy .sun { stroke: var(--c-sun); stroke-width: 2.5; transform-origin: 122px 26px; animation: spin 14s linear infinite; }
.ico-energy .sun circle { fill: var(--c-sun); }
.ico-energy .beam { stroke: var(--c-sun); stroke-width: 2.5; stroke-dasharray: 3 7; animation: flow 1s linear infinite reverse; }
.ico-energy .shine { stroke: var(--c-sun); stroke-width: 3; opacity: 0; animation: shine 3.2s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shine { 0% { opacity: 0; transform: translateX(0); } 15% { opacity: .5; } 60% { opacity: .5; } 75%, 100% { opacity: 0; transform: translateX(78px); } }

/* Light band */
.light { background: var(--paper); color: var(--paper-text); }
.light .label, .light .prose p, .light .step p { color: var(--paper-muted); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 64px; }
.step { border-top: 2px solid var(--paper-text); padding-top: 24px; }
.step h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.step p { font-size: 15px; }

/* Brands */
.brands { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 56px; }
.brand {
  background: var(--ink-2); color: var(--text); border: 1px solid var(--line); border-radius: 4px;
  padding: 48px 40px; display: flex; flex-direction: column; gap: 28px;
}
.brand .logo-box { height: 90px; display: flex; align-items: center; }
.brand .logo-box img { max-height: 90px; width: auto; }
.brand .logo-box img.wide { max-height: 34px; }
.brand h3 { font-size: 20px; font-weight: 600; }
.brand p { font-size: 15px; color: var(--muted); }
.brand p + p { margin-top: 12px; }
.merge { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; }
.merge img, .merge .arrow { flex: none; }
.merge img.wide { height: 22px; width: auto; max-width: 100%; object-fit: contain; }
.merge img { height: 52px; width: auto; }
.merge .arrow { font-size: 22px; color: var(--accent); }
.brands { grid-template-columns: 1fr; }
.brand-feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; padding: 64px 56px; }
.brand-feature .merge { flex-direction: column; flex-wrap: nowrap; justify-content: center; gap: 22px; }
.brand-feature .merge img { height: 80px; }
.brand-feature .merge img.wide { height: 29px; }
.brand-feature .merge .arrow { font-size: 30px; line-height: 1; animation-name: nudge-y; }
@keyframes nudge-y { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }
.brand-feature h3 { font-size: 26px; line-height: 1.25; margin-bottom: 14px; }
.brand-feature p { font-size: 16px; }
@media (max-width: 860px) {
  .brand-feature { grid-template-columns: 1fr; gap: 36px; padding: 44px 28px; }
  .brand-feature .merge img { height: 64px; }
  .brand-feature .merge img.wide { height: 24px; }
}

/* Contact */
.contact { border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 64px; align-items: start; }
.contact address { font-style: normal; color: var(--muted); margin-top: 32px; }
.contact-link { display: inline-flex; align-items: center; gap: 10px; line-height: 2; }
.contact-link svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 13px; color: var(--muted); }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.foot-brand { display: flex; align-items: center; gap: 20px; }
.foot-logo img { height: 52px; width: auto; transition: opacity .2s; }
.foot-logo:hover img { opacity: .7; }
.site-footer nav { display: flex; gap: 24px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--text); }

/* Legal pages */
.legal { padding: 90px 0 110px; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 600; letter-spacing: -0.02em; margin-bottom: 48px; }
.legal h2 { font-size: 20px; margin: 44px 0 12px; }
.legal p, .legal li { color: var(--muted); font-size: 16px; }
.legal p + p { margin-top: 12px; }
.legal ul { margin: 10px 0 0 20px; }
.legal a { color: var(--text); }

@media (max-width: 860px) {
  section { padding: 80px 0; }
  .hero { padding: 96px 0 84px; }
  .split, .contact-grid, .brands { grid-template-columns: 1fr; gap: 32px; }
  .sectors, .steps { grid-template-columns: 1fr; }
  .sector + .sector { border-left: 0; border-top: 1px solid var(--line); }
  .nav { gap: 18px; }
  .nav li.hide-sm { display: none; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .brand { padding: 36px 24px; }
}

/* Motion */
@keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes drift { from { background-position: 0 0, 0 0; } to { background-position: 64px 64px, 64px 64px; } }
@keyframes line-in { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.hero::before { animation: drift 18s linear infinite; }
.hero .eyebrow, .hero h1, .hero p, .hero .btns { animation: rise .9s cubic-bezier(.2, .7, .2, 1) both; }
.hero h1 { animation-delay: .12s; }
.hero p { animation-delay: .26s; }
.hero .btns { animation-delay: .4s; }

.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

.step { border-top: 0; position: relative; }
.step::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--paper-text); transform-origin: left; transform: scaleX(0); transition: transform 1s cubic-bezier(.2, .7, .2, 1) calc(var(--d, 0s) + .15s); }
.step.in::before, html:not(.js) .step::before { transform: scaleX(1); }

.site-header { transition: box-shadow .3s; }
.site-header.scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, .06); }

.btn { transition: background .2s, color .2s, transform .2s; }
.btn:hover { transform: translateY(-2px); }


.js .brand.reveal.in { transition: opacity .8s, transform .4s cubic-bezier(.2, .7, .2, 1), box-shadow .4s; }
.brand { transition: transform .4s cubic-bezier(.2, .7, .2, 1), box-shadow .4s; }
.brand:hover, .js .brand.reveal.in:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(0, 0, 0, .08); }

.merge .arrow { display: inline-block; animation: nudge 1.8s ease-in-out infinite; }
@keyframes nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(6px); } }


@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .step::before { transform: scaleX(1); }
  .ico-tel .waves path { opacity: 1; }
  .ico-net .pulse, .ico-energy .shine { display: none; }
}

/* Optical alignment: cancel the large-size side bearing so headings line up with their eyebrows */
.hero h1, h2, .legal h1 { margin-left: -0.06em; }
.legal h2 { margin-left: -0.03em; }

/* Leistungen icons */
.steps { position: relative; }
.step { padding-top: 32px; }
.sico { display: block; width: 120px; height: auto; margin-bottom: 22px; overflow: visible; fill: none; stroke: var(--paper-text); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.sico-buy .item { fill: var(--c-sun); stroke: none; animation: drop 2.6s cubic-bezier(.5, 0, .7, .4) infinite; }
.sico-buy .i2 { fill: var(--paper-text); animation-delay: 1.3s; }
@keyframes drop { 0% { transform: translateY(-6px); opacity: 0; } 15% { opacity: 1; } 55% { transform: translateY(40px); opacity: 1; } 70%, 100% { transform: translateY(46px); opacity: 0; } }

.sico-plan .grid { stroke: #3a3d42; stroke-width: 1; }
.sico-plan .draw { stroke: var(--c-net); stroke-width: 2.5; stroke-dasharray: 100; stroke-dashoffset: 100; animation: draw 3.6s ease-in-out infinite; }
.sico-plan .dot { fill: var(--paper-text); stroke: none; }
.sico-plan .d2 { fill: var(--c-net); animation: dot 3.6s ease-in-out infinite; }
@keyframes draw { 0% { stroke-dashoffset: 100; } 55%, 80% { stroke-dashoffset: 0; opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes dot { 0%, 50% { opacity: 0; transform: scale(.4); } 58%, 80% { opacity: 1; transform: none; } 100% { opacity: 0; } }
.sico-plan .d2 { transform-box: fill-box; transform-origin: center; }

.sico-int g { transform-box: fill-box; transform-origin: center; }
.sico-int .g1 { animation: spin 6s linear infinite; }
.sico-int .g2 { stroke: var(--c-tel); animation: spin 6s linear infinite reverse; }

/* Process pulse running along the step lines */
.steps::after {
  content: ""; position: absolute; top: -3px; left: 0; width: 80px; height: 8px; border-radius: 8px;
  background: radial-gradient(closest-side, rgba(255, 255, 255, .95), rgba(255, 255, 255, 0));
  animation: run 4.5s cubic-bezier(.45, 0, .55, 1) infinite;
  pointer-events: none;
}
@keyframes run { 0% { left: -80px; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
@media (max-width: 860px) { .steps::after { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .steps::after { display: none; }
  .sico-buy .item { opacity: 1; transform: translateY(30px); }
  .sico-buy .i2 { display: none; }
  .sico-plan .draw { stroke-dashoffset: 0; }
}

.coppen-link { display: block; transition: transform .3s cubic-bezier(.2, .7, .2, 1), opacity .3s; }
.coppen-link:hover { transform: scale(1.05); opacity: .85; }
.brand-feature .more { display: inline-flex; gap: 6px; margin-top: 22px; font-size: 14px; font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--text); padding-bottom: 2px; }
.brand-feature .more span { transition: transform .25s; }
.brand-feature .more:hover span { transform: translate(3px, -3px); }

/* Contact form */
.contact-form { display: grid; gap: 18px; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 6px; }
.field span { font-size: 13px; font-weight: 600; }
.field input, .field textarea {
  font: inherit; font-size: 16px; color: var(--text); background: var(--ink-2);
  border: 1px solid var(--line); border-radius: 2px; padding: 12px 14px; width: 100%;
  transition: border-color .2s, background .2s;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--text); background: var(--ink); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--muted); line-height: 1.5; }
.consent input { margin-top: 3px; accent-color: var(--text); width: 16px; height: 16px; flex: none; }
.form-foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.form-foot .btn { cursor: pointer; font-family: inherit; }
.form-foot .btn:disabled { opacity: .5; cursor: wait; transform: none; }
.form-status { font-size: 14px; color: var(--muted); }
.form-status.ok { color: #1a7f37; }
.form-status.err { color: #c62828; }
.hp { position: absolute; left: -9999px; }
@media (max-width: 600px) { .contact-form .row { grid-template-columns: 1fr; } }