:root {
  --energy-ink: #171a28;
  --energy-copy: #4e586a;
  --energy-muted: #707b8e;
  --energy-blue: #2276ff;
  --energy-yellow: #f2b705;
  --energy-yellow-deep: #a56f00;
  --energy-paper: #f7f9ff;
  --energy-line: #d8e1ef;
  --energy-card: #fff;
  --energy-radius: 22px;
  --energy-shadow: 0 22px 54px rgba(20,35,66,.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body[data-page="iso27019"] {
  margin: 0;
  color: var(--energy-ink);
  background: var(--energy-paper);
  font-family: var(--storm-ui-font, "Avenir Next", "Helvetica Neue", Arial, sans-serif);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
body[data-page="iso27019"] main { overflow: hidden; }
body[data-page="iso27019"] :is(button,a) { font-family: inherit; }
body[data-page="iso27019"] img { max-width: 100%; }

.energy-shell { width: min(1220px, calc(100% - 56px)); margin-inline: auto; }
.energy-section { padding: 112px 0; }
.energy-kicker { display: inline-flex; align-items: center; gap: 9px; color: var(--energy-yellow-deep); font-size: 11px; font-weight: 850; letter-spacing: .12em; line-height: 1.2; text-transform: uppercase; }
.energy-kicker::before { width: 28px; height: 2px; content: ""; background: currentColor; }
.energy-title { max-width: 860px; margin: 18px 0 0; color: var(--energy-ink); font-size: clamp(42px,5.1vw,72px); font-weight: 850; letter-spacing: -.055em; line-height: .98; }
.energy-title em { color: var(--energy-blue); font-style: normal; }
.energy-lede { max-width: 720px; margin: 24px 0 0; color: var(--energy-copy); font-size: 18px; line-height: 1.72; }
.energy-head { display: flex; align-items: end; justify-content: space-between; gap: 48px; margin-bottom: 52px; }
.energy-head .energy-title { font-size: clamp(40px,4.5vw,64px); }
.energy-head .energy-lede { max-width: 470px; margin: 0 0 5px; }

.energy-btn { min-height: 50px; padding: 14px 20px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 800; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.energy-btn:hover { transform: translateY(-2px); }
.energy-btn--primary { color: #171a28; background: linear-gradient(135deg,#ffd84e,#f2b705); box-shadow: 0 14px 30px rgba(242,183,5,.22); }
.energy-btn--primary:hover { box-shadow: 0 18px 36px rgba(242,183,5,.3); }
.energy-btn--ghost { color: #fff; border-color: rgba(216,229,255,.3); background: rgba(255,255,255,.06); }
.energy-btn--ghost:hover { background: rgba(255,255,255,.11); }

/* Hero */
.energy-hero { position: relative; min-height: 720px; padding: 92px 0 82px; color: #fff; background: radial-gradient(circle at 80% 14%,rgba(242,183,5,.17),transparent 28%),radial-gradient(circle at 66% 84%,rgba(34,118,255,.22),transparent 30%),linear-gradient(135deg,#141721,#202638 62%,#1b2231); }
.energy-hero::before { position: absolute; inset: 0; content: ""; opacity: .28; background-image: linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px); background-size: 52px 52px; mask-image: linear-gradient(to right,transparent 5%,#000 56%,#000); }
.energy-hero-grid { position: relative; display: grid; grid-template-columns: minmax(0,1.04fr) minmax(430px,.96fr); align-items: center; gap: 74px; }
.energy-hero .energy-kicker { color: #f9ce4a; }
.energy-hero h1 { max-width: 760px; margin: 24px 0 0; color: #fff; font-size: clamp(54px,6.25vw,86px); font-weight: 850; letter-spacing: -.065em; line-height: .92; }
.energy-hero h1 em { color: #f3bc16; font-style: normal; }
.energy-hero-copy { max-width: 680px; margin: 28px 0 0; color: #d6e0ef; font-size: 18px; line-height: 1.7; }
.energy-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.energy-note { margin: 24px 0 0; color: #9da9bc; font-size: 12px; line-height: 1.55; }

.energy-map { position: relative; min-height: 484px; padding: 22px; border: 1px solid rgba(204,217,242,.2); border-radius: 28px; background: rgba(255,255,255,.065); box-shadow: 0 32px 70px rgba(0,0,0,.3); backdrop-filter: blur(18px); overflow: hidden; }
.energy-map::before { position: absolute; inset: 58px 24px 22px; content: ""; background-image: linear-gradient(rgba(238,196,63,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(238,196,63,.08) 1px,transparent 1px); background-size: 28px 28px; border-radius: 18px; }
.energy-map-head { position: relative; display: flex; align-items: center; justify-content: space-between; color: #c7d4e8; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.energy-map-live { display: inline-flex; align-items: center; gap: 7px; color: #ffe084; }
.energy-map-live::before { width: 7px; height: 7px; content: ""; border-radius: 50%; background: #f3bd1a; box-shadow: 0 0 0 5px rgba(243,189,26,.13); }
.energy-network { position: relative; min-height: 374px; margin-top: 20px; }
.energy-line { position: absolute; height: 2px; background: linear-gradient(90deg,rgba(242,183,5,.15),#f2b705,rgba(34,118,255,.45)); transform-origin: left; }
.energy-line--one { top: 75px; left: 24%; width: 49%; transform: rotate(15deg); }
.energy-line--two { top: 178px; left: 20%; width: 56%; transform: rotate(-12deg); }
.energy-line--three { top: 278px; left: 25%; width: 48%; transform: rotate(10deg); }
.energy-hub { position: absolute; top: 124px; left: 50%; z-index: 2; width: 142px; height: 142px; display: grid; place-items: center; transform: translateX(-50%); border: 1px solid rgba(255,216,78,.38); border-radius: 50%; color: #171a28; background: radial-gradient(circle,#ffe682 0 28%,#f2b705 29% 47%,rgba(242,183,5,.1) 48% 65%,transparent 66%); box-shadow: 0 0 70px rgba(242,183,5,.18); }
.energy-hub svg { width: 34px; height: 34px; fill: currentColor; }
.energy-node { position: absolute; z-index: 3; min-width: 132px; padding: 13px 14px; border: 1px solid rgba(198,215,245,.2); border-radius: 15px; background: rgba(18,24,39,.9); box-shadow: 0 14px 30px rgba(0,0,0,.2); }
.energy-node strong { display: block; color: #fff; font-size: 12px; }
.energy-node small { display: block; margin-top: 4px; color: #98a6bb; font-size: 9px; line-height: 1.35; }
.energy-node--plc { top: 30px; left: 2%; }
.energy-node--scada { top: 36px; right: 1%; }
.energy-node--ami { bottom: 31px; left: 1%; }
.energy-node--remote { right: 1%; bottom: 25px; }
.energy-map-foot { position: absolute; right: 22px; bottom: 18px; left: 22px; display: flex; justify-content: center; color: #8796ad; font-size: 9px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }

/* Facts */
.energy-facts { background: #fff; border-bottom: 1px solid var(--energy-line); }
.energy-facts-grid { display: grid; grid-template-columns: repeat(4,1fr); }
.energy-fact { padding: 31px 28px; border-right: 1px solid var(--energy-line); }
.energy-fact:first-child { border-left: 1px solid var(--energy-line); }
.energy-fact strong { display: block; color: var(--energy-ink); font-size: 24px; font-weight: 850; letter-spacing: -.035em; }
.energy-fact span { display: block; margin-top: 6px; color: var(--energy-muted); font-size: 12px; line-height: 1.45; }

/* Scope */
.energy-scope { background: #fff; }
.energy-scope-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.energy-scope-card { min-height: 230px; padding: 26px; border: 1px solid var(--energy-line); border-radius: var(--energy-radius); background: #fff; transition: transform .22s ease,border-color .22s ease,box-shadow .22s ease; }
.energy-scope-card:hover { transform: translateY(-5px); border-color: #e2b62d; box-shadow: var(--energy-shadow); }
.energy-scope-index { display: flex; align-items: center; justify-content: space-between; color: #96a0b2; font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.energy-scope-index svg { width: 24px; height: 24px; fill: none; stroke: var(--energy-yellow-deep); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.energy-scope-card h3 { margin: 35px 0 11px; font-size: 21px; line-height: 1.16; letter-spacing: -.035em; }
.energy-scope-card p { margin: 0; color: var(--energy-copy); font-size: 14px; line-height: 1.62; }

/* STORM support */
.energy-support { background: var(--energy-paper); }
.energy-support-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.energy-support-card { min-height: 270px; padding: 28px; border: 1px solid var(--energy-line); border-radius: var(--energy-radius); background: #fff; box-shadow: 0 12px 34px rgba(20,35,66,.045); }
.energy-support-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px; color: #8d6500; background: #fff3c4; }
.energy-support-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.energy-support-card h3 { margin: 28px 0 10px; font-size: 21px; line-height: 1.16; letter-spacing: -.035em; }
.energy-support-card p { margin: 0; color: var(--energy-copy); font-size: 14px; line-height: 1.65; }
.energy-support-card small { display: block; margin-top: 18px; color: #8994a7; font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }

/* Product */
.energy-product { background: #fff; }
.energy-story-list { display: grid; gap: 86px; }
.energy-story { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(340px,.92fr); align-items: center; gap: 68px; }
.energy-story:nth-child(even) .energy-story-media { order: 2; }
.energy-story-media { position: relative; padding: 12px; border: 1px solid #d3ddec; border-radius: 24px; background: linear-gradient(145deg,#fbfcff,#eef3fa); box-shadow: var(--energy-shadow); }
.energy-story-media::after { position: absolute; top: -11px; right: 30px; width: 74px; height: 5px; content: ""; border-radius: 9px; background: var(--energy-yellow); }
.energy-story-media img { width: 100%; display: block; border: 1px solid #e0e5ed; border-radius: 14px; }
.energy-story-copy h3 { margin: 19px 0 16px; font-size: clamp(34px,4vw,50px); line-height: 1.02; letter-spacing: -.05em; }
.energy-story-copy p { margin: 0; color: var(--energy-copy); font-size: 16px; line-height: 1.72; }
.energy-checks { margin: 24px 0 0; padding: 0; display: grid; gap: 12px; list-style: none; }
.energy-checks li { position: relative; padding-left: 26px; color: #3f495c; font-size: 14px; line-height: 1.48; }
.energy-checks li::before { position: absolute; top: 2px; left: 0; width: 17px; height: 17px; display: grid; place-items: center; content: "✓"; border-radius: 50%; color: #171a28; background: var(--energy-yellow); font-size: 10px; font-weight: 900; }

/* Control themes */
.energy-themes { position: relative; color: #fff; background: linear-gradient(135deg,#171a28,#252c3e); }
.energy-themes::before { position: absolute; inset: 0; content: ""; background: radial-gradient(circle at 88% 6%,rgba(242,183,5,.2),transparent 28%); }
.energy-themes .energy-shell { position: relative; }
.energy-themes .energy-kicker { color: #f4ca45; }
.energy-themes .energy-title { color: #fff; }
.energy-themes .energy-lede { color: #c8d4e8; }
.energy-theme-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.energy-theme { min-height: 310px; padding: 28px 24px; border: 1px solid rgba(204,217,242,.2); border-radius: 20px; background: rgba(255,255,255,.04); }
.energy-theme-num { color: #f4c83f; font-size: 11px; font-weight: 850; letter-spacing: .1em; }
.energy-theme h3 { margin: 38px 0 14px; color: #fff; font-size: 23px; letter-spacing: -.035em; }
.energy-theme p { margin: 0; color: #bac7d9; font-size: 14px; line-height: 1.64; }
.energy-theme small { display: block; margin-top: 22px; color: #8392aa; font-size: 10px; font-weight: 800; line-height: 1.45; letter-spacing: .07em; text-transform: uppercase; }
.energy-theme-note { margin: 28px 0 0; color: #94a3ba; font-size: 11px; line-height: 1.55; }

/* Path */
.energy-path { background: var(--energy-paper); }
.energy-path-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.energy-step { position: relative; min-height: 290px; padding: 28px 24px; border: 1px solid var(--energy-line); border-radius: 20px; background: #fff; }
.energy-step::after { position: absolute; top: 44px; right: -15px; z-index: 2; width: 30px; height: 2px; content: ""; background: #e1b62d; }
.energy-step:last-child::after { display: none; }
.energy-step-num { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #171a28; background: var(--energy-yellow); font-size: 12px; font-weight: 850; }
.energy-step h3 { margin: 34px 0 12px; font-size: 22px; letter-spacing: -.035em; }
.energy-step p { margin: 0; color: var(--energy-copy); font-size: 14px; line-height: 1.62; }
.energy-step small { position: absolute; right: 24px; bottom: 23px; left: 24px; color: #8994a7; font-size: 10px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }

/* Sources, FAQ and final */
.energy-source { padding: 34px 0; border-block: 1px solid var(--energy-line); background: #fff; }
.energy-source-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.energy-source p { max-width: 610px; margin: 0; color: var(--energy-copy); font-size: 13px; line-height: 1.58; }
.energy-source-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.energy-source-links a { padding: 9px 12px; border: 1px solid #dec871; border-radius: 999px; color: #745200; background: #fffaf0; font-size: 11px; font-weight: 750; text-decoration: none; }
.energy-source-links a:hover { border-color: #c69200; background: #fff4c9; }
.energy-faq { background: #fff; }
.energy-faq-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 72px; align-items: start; }
.energy-faq-list { border-top: 1px solid var(--energy-line); }
.energy-faq-item { border-bottom: 1px solid var(--energy-line); }
.energy-faq-item summary { position: relative; padding: 24px 46px 24px 0; cursor: pointer; font-size: 17px; font-weight: 750; line-height: 1.35; list-style: none; }
.energy-faq-item summary::-webkit-details-marker { display: none; }
.energy-faq-item summary::after { position: absolute; top: 23px; right: 4px; content: "+"; color: var(--energy-yellow-deep); font-size: 25px; font-weight: 500; transition: transform .2s ease; }
.energy-faq-item[open] summary::after { transform: rotate(45deg); }
.energy-faq-answer { padding: 0 38px 24px 0; color: var(--energy-copy); font-size: 14px; line-height: 1.72; }
.energy-final { padding: 86px 0; color: #fff; background: radial-gradient(circle at 82% 0%,rgba(242,183,5,.22),transparent 34%),linear-gradient(130deg,#171a28,#252c3e); }
.energy-final-inner { display: flex; align-items: center; justify-content: space-between; gap: 60px; }
.energy-final .energy-kicker { color: #f3c842; }
.energy-final h2 { max-width: 760px; margin: 14px 0 0; color: #fff; font-size: clamp(40px,5vw,66px); line-height: .98; letter-spacing: -.055em; }
.energy-final h2 em { color: #f3bc16; font-style: normal; }
.energy-final p { max-width: 690px; margin: 20px 0 0; color: #cbd7e9; font-size: 16px; line-height: 1.65; }
.energy-final .energy-btn { flex: 0 0 auto; }

@media (max-width:1100px) {
  .energy-hero { min-height: 0; }
  .energy-hero-grid { grid-template-columns: 1fr; gap: 52px; }
  .energy-map { max-width: 740px; }
  .energy-scope-grid,.energy-support-grid { grid-template-columns: repeat(2,1fr); }
  .energy-story { gap: 42px; }
  .energy-theme-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width:820px) {
  .energy-section { padding: 82px 0; }
  .energy-head { display: block; }
  .energy-head .energy-lede { margin-top: 22px; }
  .energy-facts-grid { grid-template-columns: repeat(2,1fr); }
  .energy-fact:nth-child(3) { border-top: 1px solid var(--energy-line); border-left: 1px solid var(--energy-line); }
  .energy-fact:nth-child(4) { border-top: 1px solid var(--energy-line); }
  .energy-story,.energy-story:nth-child(even) { grid-template-columns: 1fr; }
  .energy-story:nth-child(even) .energy-story-media { order: 0; }
  .energy-path-grid { grid-template-columns: repeat(2,1fr); }
  .energy-step:nth-child(2)::after { display: none; }
  .energy-source-inner,.energy-final-inner { align-items: flex-start; flex-direction: column; }
  .energy-source-links { justify-content: flex-start; }
  .energy-faq-grid { grid-template-columns: 1fr; gap: 44px; }
}
@media (max-width:580px) {
  .energy-shell { width: min(100% - 28px,1220px); }
  .energy-hero { padding: 68px 0 62px; }
  .energy-hero h1 { font-size: clamp(46px,14.5vw,64px); }
  .energy-map { min-height: 440px; padding: 15px; }
  .energy-node { min-width: 112px; padding: 11px; }
  .energy-hub { top: 128px; width: 118px; height: 118px; }
  .energy-facts-grid,.energy-scope-grid,.energy-support-grid,.energy-theme-grid,.energy-path-grid { grid-template-columns: 1fr; }
  .energy-fact { border-top: 1px solid var(--energy-line); border-left: 1px solid var(--energy-line); }
  .energy-fact:first-child { border-top: 0; }
  .energy-step::after { display: none; }
  .energy-source-links a { width: 100%; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  .energy-btn,.energy-scope-card { transition: none; }
}