/* Branchen · Energieversorger / Stadtwerke · architecture "IT trifft OT"
 * Two rails run through the whole page: hero IT|OT preview, two-track attack surface aligned by row,
 * a 4-row IT/OT comparison table, a dated ledger, two converging test tracks, a label-rail FAQ.
 * Brand: League Spartan via --font-family, accent #1e88e5, navy #020b17 / #030d1d / #041326 / #041826.
 * Deliberately NOT used here: hero checkmark panel, 4-card icon grid, report-preview mockup,
 * vertical 5-step process-timeline, 2-column FAQ.
 */

/* ---------- shared primitives ---------- */
.en-mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.en-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.en-sec{padding:88px 0;}
.en-sec--a{background:#020b17;}
.en-sec--b{background:#030d1d;}
.en-sec--c{background:#041326;}
.en-sec--d{background:#041826;}
.en-sec-head{max-width:760px;margin-bottom:3rem;}
.en-kicker{font-size:0.68rem;font-weight:700;letter-spacing:0.13em;text-transform:uppercase;color:#1e88e5;display:block;margin-bottom:0.6rem;}
.en-h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:#fff;letter-spacing:-0.02em;line-height:1.2;margin-bottom:1rem;overflow-wrap:anywhere;}
.en-h3{font-size:clamp(1.2rem,2.2vw,1.5rem);font-weight:800;color:#fff;letter-spacing:-0.01em;line-height:1.25;margin-bottom:0.75rem;overflow-wrap:anywhere;}
.en-lead{font-size:0.95rem;color:rgba(255,255,255,0.55);line-height:1.7;max-width:680px;margin:0;}
.en-footnote{margin:1.25rem 0 0;font-size:0.8rem;line-height:1.6;color:rgba(255,255,255,0.5);max-width:760px;}
.en-footnote .en-mono{color:#1e88e5;font-weight:700;}
.en-footnote--muted{color:rgba(255,255,255,0.35);font-size:0.75rem;font-style:italic;}

/* ---------- 1 · hero ---------- */
.en-hero{background:#030d1d;padding:120px 0 100px;position:relative;overflow:hidden;}
.en-hero::before{content:'';position:absolute;top:-200px;right:-200px;width:700px;height:700px;border-radius:50%;background:radial-gradient(circle,rgba(30,136,229,0.08) 0%,transparent 70%);pointer-events:none;}
.en-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(30,136,229,0.12);border:1px solid rgba(30,136,229,0.3);border-radius:4px;padding:5px 14px;font-size:0.72rem;font-weight:700;letter-spacing:0.13em;text-transform:uppercase;color:#1e88e5;margin-bottom:1.5rem;}
.en-h1{font-size:clamp(2.2rem,4.5vw,3.6rem);font-weight:800;letter-spacing:-0.03em;line-height:1.05;color:#fff;margin-bottom:1.5rem;overflow-wrap:anywhere;}
.en-h1 .accent{color:#1e88e5;}
.en-hero-text{font-size:1.05rem;line-height:1.75;color:rgba(255,255,255,0.75);max-width:580px;margin-bottom:2.5rem;}
.en-cta-group{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:3rem;}
.en-btn-primary{display:inline-flex;align-items:center;gap:8px;background:#1e88e5;color:#fff !important;font-weight:700;font-size:0.9rem;padding:14px 28px;border-radius:6px;text-decoration:none !important;transition:background 0.2s,transform 0.15s,box-shadow 0.2s;box-shadow:0 4px 18px rgba(30,136,229,0.35);white-space:nowrap;}
.en-btn-primary:hover{background:#0A3570;transform:translateY(-2px);box-shadow:0 8px 28px rgba(30,136,229,0.45);}
.en-btn-primary:focus-visible{outline:2px solid #fff;outline-offset:3px;}
.en-btn-secondary{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,0.75) !important;font-size:0.88rem;font-weight:500;text-decoration:none !important;padding:14px 0;border-bottom:1px solid rgba(255,255,255,0.25);transition:color 0.2s;white-space:nowrap;}
.en-btn-secondary:hover{color:#fff !important;}
.en-btn-secondary:focus-visible{outline:2px solid #1e88e5;outline-offset:3px;}
.en-trust-row{display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap;}
.en-trust-item{display:flex;align-items:center;gap:6px;font-size:0.78rem;font-weight:600;color:rgba(255,255,255,0.55);}
.en-trust-item svg{color:#1e88e5;flex-shrink:0;}

/* hero right: IT | OT rail (not a panel — two labelled columns split by a hairline) */
.en-rail{padding:0.5rem 0;}
.en-rail-kicker{font-size:0.68rem;font-weight:700;letter-spacing:0.13em;text-transform:uppercase;color:rgba(255,255,255,0.45);margin-bottom:1.5rem;padding-bottom:0.9rem;border-bottom:1px solid rgba(255,255,255,0.1);}
.en-rail-cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
.en-rail-col{padding:0 1.5rem 0 0;min-width:0;}
.en-rail-col--ot{padding:0 0 0 1.5rem;border-left:1px solid rgba(255,255,255,0.14);}
.en-rail-label{display:flex;flex-direction:column;gap:4px;margin-bottom:1.1rem;}
.en-rail-label .en-mono{font-size:1.9rem;font-weight:700;line-height:1;letter-spacing:-0.02em;color:rgba(255,255,255,0.85);}
.en-rail-col--ot .en-rail-label .en-mono{color:#1e88e5;}
.en-rail-sub{font-size:0.72rem;font-weight:600;color:rgba(255,255,255,0.45);letter-spacing:0.02em;overflow-wrap:anywhere;}
.en-rail-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0.75rem;}
.en-rail-list li{position:relative;padding-left:1rem;font-size:0.84rem;line-height:1.55;color:rgba(255,255,255,0.65);}
.en-rail-list li::before{content:'';position:absolute;left:0;top:0.6em;width:6px;height:1px;background:rgba(255,255,255,0.35);}
.en-rail-col--ot .en-rail-list li::before{background:#1e88e5;}
.en-rail-footer{margin-top:1.5rem;padding-top:0.9rem;border-top:1px solid rgba(255,255,255,0.1);font-size:0.8rem;line-height:1.55;color:rgba(255,255,255,0.45);}
@media(max-width:575px){
  .en-rail-cols{grid-template-columns:minmax(0,1fr);}
  .en-rail-col{padding:0;}
  .en-rail-col--ot{border-left:none;border-top:1px solid rgba(255,255,255,0.14);padding-top:1.25rem;margin-top:1.25rem;}
}

/* ---------- 2 · 3-year cycle band ---------- */
.en-cycle-band{display:grid;grid-template-columns:minmax(0,160px) minmax(0,auto) minmax(0,1fr);gap:2.5rem;align-items:center;border-top:1px solid rgba(255,255,255,0.12);border-bottom:1px solid rgba(255,255,255,0.12);padding:2.25rem 0;}
.en-cycle-label{font-size:0.68rem;font-weight:700;letter-spacing:0.13em;text-transform:uppercase;color:rgba(255,255,255,0.45);}
.en-cycle-value{font-size:clamp(2rem,4vw,3.2rem);font-weight:700;color:#fff;letter-spacing:-0.03em;line-height:1;white-space:nowrap;}
.en-cycle-text{margin:0;color:rgba(255,255,255,0.65);font-size:0.92rem;line-height:1.7;}
@media(max-width:991px){
  .en-cycle-band{grid-template-columns:minmax(0,1fr);gap:0.9rem;}
  .en-cycle-value{white-space:normal;overflow-wrap:anywhere;}
}

/* ---------- 3 · attack surface, two tracks ---------- */
.en-surface{display:grid;grid-template-columns:110px minmax(0,1fr) minmax(0,1fr);column-gap:0;row-gap:0;border-top:1px solid rgba(255,255,255,0.12);}
.en-surface-corner{border-bottom:1px solid rgba(255,255,255,0.12);}
.en-surface-head{display:flex;align-items:baseline;gap:0.75rem;padding:1.1rem 1.5rem;border-bottom:1px solid rgba(255,255,255,0.12);font-size:0.8rem;font-weight:600;color:rgba(255,255,255,0.55);min-width:0;}
.en-surface-head .en-mono{font-size:1.25rem;font-weight:700;letter-spacing:-0.02em;color:rgba(255,255,255,0.85);}
.en-surface-head--ot{border-left:1px solid rgba(255,255,255,0.12);}
.en-surface-head--ot .en-mono{color:#1e88e5;}
.en-surface-tag{display:flex;align-items:flex-start;padding:1.6rem 0.75rem 1.6rem 0;font-size:0.68rem;font-weight:700;letter-spacing:0.13em;text-transform:uppercase;color:#1e88e5;border-bottom:1px solid rgba(255,255,255,0.08);}
.en-surface-item{display:flex;gap:1rem;align-items:flex-start;padding:1.6rem 1.5rem;border-bottom:1px solid rgba(255,255,255,0.08);min-width:0;}
.en-surface-item--ot{border-left:1px solid rgba(255,255,255,0.12);}
.en-surface-item svg{flex-shrink:0;margin-top:2px;}
.en-surface-item h3{font-size:1rem;font-weight:700;color:#fff;margin:0 0 0.4rem;line-height:1.3;overflow-wrap:anywhere;}
.en-surface-item p{margin:0;font-size:0.85rem;line-height:1.65;color:rgba(255,255,255,0.55);}
.en-chip{display:none;}
@media(max-width:767px){
  .en-surface{grid-template-columns:minmax(0,1fr);}
  .en-surface-corner,.en-surface-head{display:none;}
  .en-surface-tag{padding:1.5rem 0 0.6rem;border-bottom:none;}
  .en-surface-item{padding:1rem 0 1.25rem;border-bottom:none;flex-wrap:wrap;}
  .en-surface-item--it{border-bottom:1px dashed rgba(255,255,255,0.1);}
  .en-surface-item--ot{border-left:none;border-bottom:1px solid rgba(255,255,255,0.12);}
  .en-surface-item > div{flex:1 1 200px;min-width:0;}
  .en-chip{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;flex-shrink:0;border:1px solid rgba(255,255,255,0.2);border-radius:4px;font-size:0.68rem;font-weight:700;color:rgba(255,255,255,0.7);order:-1;}
  .en-surface-item--ot .en-chip{border-color:rgba(30,136,229,0.5);color:#1e88e5;}
  .en-surface-item svg{display:none;}
}

/* ---------- 4 · IT vs OT comparison table ---------- */
.en-table-wrap{overflow-x:auto;}
.en-table{width:100%;border-collapse:collapse;table-layout:fixed;}
.en-table thead th{text-align:left;vertical-align:bottom;padding:0 1.25rem 1rem;font-size:0.8rem;font-weight:600;color:rgba(255,255,255,0.55);border-bottom:1px solid rgba(255,255,255,0.14);}
.en-table thead th .en-mono{display:block;font-size:1.25rem;font-weight:700;letter-spacing:-0.02em;color:rgba(255,255,255,0.85);margin-bottom:0.25rem;}
.en-table thead th.en-table-ot .en-mono{color:#1e88e5;}
.en-table thead th.en-table-rowhead{width:150px;padding-left:0;}
.en-table tbody th{text-align:left;vertical-align:top;padding:1.25rem 1rem 1.25rem 0;font-size:0.7rem;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;color:#1e88e5;border-bottom:1px solid rgba(255,255,255,0.08);}
.en-table tbody td{vertical-align:top;padding:1.25rem 1.25rem;font-size:0.9rem;line-height:1.6;color:rgba(255,255,255,0.7);border-bottom:1px solid rgba(255,255,255,0.08);}
.en-table tbody td[data-side="OT"]{border-left:1px solid rgba(255,255,255,0.12);color:rgba(255,255,255,0.85);}
.en-table thead th.en-table-ot{border-left:1px solid rgba(255,255,255,0.12);}
.en-table tbody tr:last-child th,.en-table tbody tr:last-child td{border-bottom:1px solid rgba(255,255,255,0.14);}
.en-itot-footer{margin:1.5rem 0 0;max-width:760px;color:rgba(255,255,255,0.55);font-size:0.9rem;line-height:1.7;}
@media(max-width:767px){
  .en-table,.en-table tbody,.en-table tr,.en-table tbody th,.en-table td{display:block;width:100%;}
  .en-table thead{display:none;}
  .en-table tbody tr{padding:1.25rem 0;border-bottom:1px solid rgba(255,255,255,0.12);}
  .en-table tbody th{padding:0 0 0.6rem;border-bottom:none;}
  .en-table tbody td{padding:0.35rem 0 0.35rem 2.6rem;position:relative;border-bottom:none;}
  .en-table tbody td[data-side="OT"]{border-left:none;}
  .en-table tbody td::before{content:attr(data-side);position:absolute;left:0;top:0.45rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:0.68rem;font-weight:700;color:rgba(255,255,255,0.5);border:1px solid rgba(255,255,255,0.2);border-radius:3px;padding:2px 5px;line-height:1;}
  .en-table tbody td[data-side="OT"]::before{color:#1e88e5;border-color:rgba(30,136,229,0.5);}
  .en-table tbody tr:last-child th,.en-table tbody tr:last-child td{border-bottom:none;}
}

/* ---------- 5 · chronicle ledger ---------- */
.en-ledger{border-top:1px solid rgba(255,255,255,0.12);}
.en-ledger-row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:2rem;padding:1.6rem 0;border-bottom:1px solid rgba(255,255,255,0.1);}
.en-ledger-date{font-size:0.95rem;font-weight:700;color:#fff;letter-spacing:0.02em;padding-top:2px;position:relative;padding-left:1.1rem;}
.en-ledger-date::before{content:'';position:absolute;left:0;top:0.55em;width:7px;height:7px;border-radius:50%;background:#E24B4A;}
.en-ledger-row--physical .en-ledger-date::before{background:rgba(255,255,255,0.35);}
.en-ledger-body{min-width:0;}
.en-ledger-meta{display:flex;align-items:baseline;gap:0.75rem 1rem;flex-wrap:wrap;margin-bottom:0.45rem;}
.en-ledger-meta h3{font-size:1rem;font-weight:700;color:#fff;margin:0;line-height:1.3;overflow-wrap:anywhere;}
.en-ledger-tag{font-size:0.66rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:rgba(226,75,74,0.9);}
.en-ledger-row--physical .en-ledger-tag{color:rgba(255,255,255,0.45);}
.en-ledger-body p{margin:0;font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.62);}
@media(max-width:575px){
  .en-ledger-row{grid-template-columns:minmax(0,1fr);gap:0.5rem;}
}

/* ---------- 6 · two test tracks converging ---------- */
.en-tracks{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;border:1px solid rgba(255,255,255,0.1);border-radius:10px;overflow:hidden;position:relative;}
.en-track{padding:2rem;min-width:0;position:relative;}
.en-track--it{background:rgba(255,255,255,0.02);}
.en-track--ot{background:rgba(30,136,229,0.06);border-left:1px solid rgba(255,255,255,0.1);}
.en-track-label{display:flex;align-items:baseline;gap:0.75rem;font-size:0.8rem;font-weight:700;letter-spacing:0.04em;text-transform:uppercase;color:rgba(255,255,255,0.6);margin-bottom:1.5rem;padding-bottom:0.9rem;border-bottom:1px solid rgba(255,255,255,0.1);}
.en-track-label .en-mono{font-size:1.25rem;letter-spacing:-0.02em;color:rgba(255,255,255,0.85);text-transform:none;}
.en-track--ot .en-track-label .en-mono{color:#1e88e5;}
.en-track-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1.35rem;}
.en-track-steps li{display:flex;gap:1rem;align-items:flex-start;}
.en-track-num{flex-shrink:0;font-size:0.72rem;font-weight:700;color:rgba(255,255,255,0.4);padding-top:3px;min-width:1.6rem;}
.en-track--ot .en-track-num{color:#1e88e5;}
.en-track-steps h3{font-size:0.97rem;font-weight:700;color:#fff;margin:0 0 0.35rem;line-height:1.3;overflow-wrap:anywhere;}
.en-track-steps p{margin:0;font-size:0.84rem;line-height:1.65;color:rgba(255,255,255,0.55);}
/* join: two stubs drop from the track columns, a bar links them, one stub continues to the report */
.en-join{position:relative;height:56px;}
.en-join::before{content:'';position:absolute;top:0;left:25%;right:25%;height:28px;border-left:1px solid rgba(30,136,229,0.5);border-right:1px solid rgba(30,136,229,0.5);border-bottom:1px solid rgba(30,136,229,0.5);}
.en-join::after{content:'';position:absolute;left:50%;top:28px;height:28px;width:1px;background:rgba(30,136,229,0.5);}
.en-converge{display:flex;gap:1.1rem;align-items:flex-start;max-width:720px;margin:0 auto;padding:1.5rem 1.75rem;border:1px solid rgba(30,136,229,0.35);border-radius:10px;background:rgba(30,136,229,0.08);}
.en-converge svg{flex-shrink:0;margin-top:2px;}
.en-converge-title{font-size:1.05rem;font-weight:700;color:#fff;line-height:1.35;margin-bottom:0.4rem;overflow-wrap:anywhere;}
.en-converge-sub{margin:0;font-size:0.85rem;line-height:1.65;color:rgba(255,255,255,0.6);}
@media(max-width:767px){
  .en-tracks{grid-template-columns:minmax(0,1fr);}
  .en-track{padding:1.5rem;}
  .en-track--ot{border-left:none;border-top:1px solid rgba(255,255,255,0.1);}
  .en-join{height:36px;}
  .en-join::before{display:none;}
  .en-join::after{top:0;height:36px;}
  .en-converge{padding:1.25rem;}
}

/* ---------- 7 · modules & compliance link list ---------- */
.en-links{list-style:none;margin:0;padding:0;border-top:1px solid rgba(255,255,255,0.12);}
.en-link-row{display:grid;grid-template-columns:3rem minmax(0,1fr) auto;gap:1.25rem;align-items:center;padding:1.35rem 0;border-bottom:1px solid rgba(255,255,255,0.1);}
.en-link-idx{font-size:0.75rem;font-weight:700;color:#1e88e5;}
.en-link-body{min-width:0;}
.en-link-body h3{font-size:1rem;font-weight:700;color:#fff;margin:0 0 0.3rem;line-height:1.3;overflow-wrap:anywhere;}
.en-link-body p{margin:0;font-size:0.85rem;line-height:1.6;color:rgba(255,255,255,0.55);}
.en-links--compact .en-link-body h3{margin-bottom:0;}
.en-link-arrow{display:inline-flex;align-items:center;gap:8px;color:#1e88e5 !important;font-size:0.84rem;font-weight:600;text-decoration:none !important;white-space:nowrap;padding:6px 0;transition:color 0.2s,gap 0.2s;}
.en-link-arrow:hover{color:#5fb0f0 !important;gap:12px;}
.en-link-arrow:focus-visible{outline:2px solid #1e88e5;outline-offset:3px;border-radius:2px;}
.en-compliance{margin-top:3.5rem;}
.en-compliance .en-lead{margin-bottom:1.5rem;}
@media(max-width:575px){
  .en-link-row{grid-template-columns:2.4rem minmax(0,1fr);gap:0.75rem 1rem;}
  .en-link-arrow{grid-column:2;justify-self:start;}
}

/* ---------- 8 · grouped FAQ: label rail left, accordion right ---------- */
.en-faq-group{display:grid;grid-template-columns:260px minmax(0,1fr);gap:2.5rem;padding:2rem 0;border-top:1px solid rgba(255,255,255,0.12);}
.en-faq-group:last-child{border-bottom:1px solid rgba(255,255,255,0.12);}
.en-faq-group-label{display:flex;flex-direction:column;gap:0.5rem;align-self:start;position:sticky;top:110px;}
.en-faq-group-label .en-mono{font-size:0.75rem;font-weight:700;color:#1e88e5;}
.en-faq-group-label h3{font-size:1.1rem;font-weight:800;color:#fff;margin:0;line-height:1.3;letter-spacing:-0.01em;overflow-wrap:anywhere;}
.en-faq .accordion-item{background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.07);border-radius:8px;margin-bottom:0.75rem;overflow:hidden;}
.en-faq .accordion-item:last-child{margin-bottom:0;}
.en-faq .accordion-button{background:transparent;border:none;box-shadow:none;padding:1.05rem 1.25rem;width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:1rem;cursor:pointer;color:rgba(255,255,255,0.88);}
.en-faq .accordion-button::after{filter:invert(1) brightness(1.4);opacity:0.7;flex-shrink:0;}
.en-faq .accordion-button:not(.collapsed){background:rgba(30,136,229,0.08);border-bottom:1px solid rgba(30,136,229,0.15);color:#fff;}
.en-faq .accordion-button:focus-visible{outline:2px solid #1e88e5;outline-offset:-2px;}
.en-faq-q{font-size:0.95rem;font-weight:600;line-height:1.4;min-width:0;overflow-wrap:anywhere;}
.en-faq .accordion-body{padding:1rem 1.25rem 1.25rem;color:rgba(255,255,255,0.6);font-size:0.87rem;line-height:1.75;}
@media(max-width:991px){
  .en-faq-group{grid-template-columns:minmax(0,1fr);gap:1.25rem;}
  .en-faq-group-label{position:static;flex-direction:row;align-items:baseline;gap:0.75rem;}
}

/* ---------- 9 · CTA footer (shared device) ---------- */
.en-cta-footer{background:linear-gradient(135deg,#0A3570 0%,#062449 100%);padding:70px 0;text-align:center;}
.en-cta-footer h2{color:#fff;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;letter-spacing:-0.02em;margin-bottom:1rem;overflow-wrap:anywhere;}
.en-cta-footer p{color:rgba(255,255,255,0.75);font-size:1rem;max-width:600px;margin:0 auto 2rem;line-height:1.6;}
.en-cta-group-footer{display:flex;align-items:center;justify-content:center;gap:1.5rem;flex-wrap:wrap;}
.en-cta-mail{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,0.8) !important;font-size:0.9rem;text-decoration:none !important;overflow-wrap:anywhere;}
.en-cta-mail:hover{color:#fff !important;}
.en-cta-mail:focus-visible{outline:2px solid #fff;outline-offset:3px;}

/* ---------- responsive rhythm ---------- */
@media(max-width:768px){
  .en-hero{padding:90px 0 70px;}
  .en-sec,.en-cta-footer{padding:56px 0;}
  .en-sec-head{margin-bottom:2rem;}
}
/* Keep the long German CTA labels on one line at narrow phone widths (never wrap a button label) */
@media(max-width:400px){
  .en-btn-primary{font-size:0.82rem;padding:13px 18px;gap:6px;}
  .en-btn-secondary{font-size:0.82rem;}
  .en-cta-footer .en-btn-primary{width:100%;justify-content:center;}
}