/* Shared article index, cards, and long-form reading layout. */
.articles-preview {
  padding: clamp(3.5rem, 8vh, 7rem) 0;
  background:
    radial-gradient(circle at 12% 15%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 30%),
    linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg-2) 65%, transparent));
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1.5rem;
  width: min(var(--maxw), calc(100% - 3rem));
  margin: 0 auto;
}
.article-grid--home:has(.article-card:only-child) {
  grid-template-columns: minmax(0, 760px);
  justify-content: center;
}
.article-card {
  min-width: 0;
  border-radius: 24px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.article-card:hover {
  transform: translateY(-7px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--glass-stroke));
  box-shadow: var(--glow);
}
.article-card__media {
  position: relative;
  display: block;
  aspect-ratio: 1.91 / 1;
  overflow: hidden;
  background: #eef4f8;
}
.article-card__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 38%;
  background: linear-gradient(transparent, rgba(5, 12, 26, 0.56));
  pointer-events: none;
}
.article-card__media--designed::after { display: none; }
.article-card__media--designed .article-card__category { right: 1rem; left: auto; }
.article-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.6s var(--ease);
}
.article-card:hover .article-card__media img { transform: scale(1.025); }
.article-card__category {
  position: absolute;
  z-index: 1;
  left: 1rem;
  bottom: 1rem;
  padding: 0.42rem 0.8rem;
  border-radius: 999px;
  color: #05210c;
  background: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}
.article-card__image-title {
  position: absolute;
  z-index: 1;
  top: 12%;
  left: 50%;
  width: min(86%, 560px);
  transform: translateX(-50%);
  color: #102f64;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.6vw, 1.8rem);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-wrap: balance;
}
.article-card__body { padding: clamp(1.25rem, 3vw, 1.7rem); }
.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
}
.article-card h3 {
  margin: 0.75rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.3vw, 1.65rem);
  line-height: 1.35;
}
.article-card h3 a:hover { color: var(--accent); }
.article-card p { color: var(--ink-soft); line-height: 1.7; }
.article-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.15rem;
  color: var(--accent);
  font-weight: 600;
}
.article-card__link span { transition: transform 0.25s var(--ease); }
.article-card__link:hover span { transform: translateX(4px); }
.article-preview__more { margin-top: 2.1rem; text-align: center; }
.article-preview__more a {
  display: inline-flex;
  padding: 0.8rem 1.35rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 999px;
  color: var(--ink);
  background: var(--glass-bg);
  transition: color 0.25s var(--ease), transform 0.25s var(--ease);
}
.article-preview__more a:hover { color: var(--accent); transform: translateY(-2px); }
.article-list__empty { grid-column: 1 / -1; color: var(--ink-soft); text-align: center; }

/* Index */
.article-page-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 80% 8%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 28%),
    radial-gradient(circle at 8% 45%, rgba(31, 83, 154, 0.12), transparent 30%),
    var(--bg);
}
.article-nav {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg) 88%, transparent), transparent);
}
.article-nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--glass-stroke);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}
.nav__link[aria-current="page"] {
  color: #05210c;
  background: var(--accent);
}
.article-index-hero {
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(8.5rem, 18vh, 12rem) 1.5rem clamp(3rem, 8vh, 5rem);
  text-align: center;
}
.article-index-hero__eyebrow,
.article-hero__eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}
.article-index-hero h1 {
  margin: 1rem 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 1.06;
}
.article-index-hero p:last-child {
  max-width: 680px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.15rem);
}
.article-index-list { padding: 0 0 clamp(5rem, 10vh, 8rem); }

/* Article detail */
.reading-progress {
  position: fixed;
  z-index: 80;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--accent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--accent) 70%, transparent);
}
.article-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(7.5rem, 14vh, 9.5rem) 1.5rem 0;
}
.article-hero__copy {
  max-width: 930px;
  margin: 0 auto 2rem;
  text-align: center;
}
.article-hero h1 {
  margin: 0.8rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 5.7vw, 4.55rem);
  line-height: 1.12;
  text-wrap: balance;
}
.article-hero__dek {
  max-width: 760px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.75;
}
.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.2rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}
.article-hero__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 2.45 / 1;
  border: 1px solid var(--glass-stroke);
  border-radius: clamp(22px, 4vw, 36px);
  background: #eef4f8;
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.24);
}
.article-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 80%;
}
.article-hero__media.article-hero__media--poster { aspect-ratio: 1200 / 630; background: #183b70; }
.article-hero__media.article-hero__media--poster img { object-fit: contain; object-position: center; }
.article-hero__caption {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  padding: 0.42rem 0.75rem;
  border-radius: 999px;
  color: rgba(255,255,255,0.9);
  background: rgba(5,12,26,0.68);
  font-size: 0.72rem;
  backdrop-filter: blur(8px);
}
.outage-hero__frames { position: absolute; inset: 0; }
.outage-hero .outage-hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.8s var(--ease), transform 1.2s var(--ease), filter 0.8s var(--ease);
}
.outage-hero__image--grid { opacity: 1; }
.outage-hero__image--backup { opacity: 0; transform: scale(1.018); filter: brightness(0.88); }
.outage-hero.is-outage .outage-hero__image--grid { opacity: 0; transform: scale(1.018); }
.outage-hero.is-outage .outage-hero__image--backup { opacity: 1; transform: scale(1); filter: brightness(1); }
.outage-hero__controls {
  position: absolute;
  z-index: 3;
  left: 1rem;
  bottom: 1rem;
  display: flex;
  gap: 0.35rem;
  padding: 0.35rem;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 999px;
  background: rgba(5,12,26,0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.outage-hero__controls button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.58rem 0.8rem;
  border: 0;
  border-radius: 999px;
  color: rgba(255,255,255,0.72);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  cursor: pointer;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.outage-hero__controls button > span { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.outage-hero__controls button.is-active { color: #05210c; background: var(--accent); }
.outage-hero__controls button.is-active > span { box-shadow: 0 0 12px currentColor; }
.outage-hero .article-hero__caption { top: 1rem; bottom: auto; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(220px, 280px);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  width: min(1100px, calc(100% - 3rem));
  margin: clamp(3rem, 8vh, 6rem) auto;
}
.article-body {
  min-width: 0;
  color: var(--ink);
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.9;
}
.article-body > * + * { margin-top: 1.35rem; }
.article-body h2 {
  margin-top: clamp(3.2rem, 7vw, 5rem);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.45rem);
  line-height: 1.3;
  scroll-margin-top: 7rem;
}
.article-body h3 {
  margin-top: 2.2rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.4;
}
.article-body p, .article-body li { color: color-mix(in srgb, var(--ink) 88%, var(--ink-soft)); }
.article-body strong { color: var(--ink); }
.article-body ul, .article-body ol { padding-left: 1.35rem; }
.article-body li + li { margin-top: 0.7rem; }
.article-lead {
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  line-height: 1.75;
  color: var(--ink) !important;
}
.key-takeaway,
.article-note {
  padding: clamp(1.3rem, 3vw, 1.8rem);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--glass-stroke));
  border-radius: 20px;
  background: color-mix(in srgb, var(--accent) 7%, var(--glass-bg));
}
.key-takeaway strong,
.article-note strong { display: block; margin-bottom: 0.35rem; color: var(--accent); }
.toc {
  position: sticky;
  top: 6.2rem;
  padding: 1.25rem;
  border-radius: 18px;
}
.toc__label {
  margin-bottom: 0.7rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.toc ol { display: grid; gap: 0.6rem; padding-left: 1.15rem; color: var(--ink-soft); font-size: 0.88rem; }
.toc a:hover { color: var(--accent); }
.toc__share {
  width: 100%;
  margin-top: 1rem;
  padding: 0.58rem 0.75rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 10px;
  color: var(--ink);
  background: transparent;
  font-family: var(--font-sans);
  cursor: pointer;
}
.toc__share:hover { color: var(--accent); border-color: var(--accent); }

/* Simulated load profiles: HTML/CSS so values remain controlled and legible. */
.load-profile-figure {
  padding: clamp(1rem, 3vw, 1.5rem);
  border-radius: 22px;
}
.load-profile-figure figcaption { margin-bottom: 1rem; }
.load-profile-figure figcaption strong { display: block; font-family: var(--font-display); font-size: 1.2rem; }
.load-profile-figure figcaption span { display: block; color: var(--ink-soft); font-size: 0.86rem; }
.load-profile-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 1rem;
  color: var(--ink-soft);
  font-size: 0.8rem;
}
.load-profile-legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.legend-swatch { width: 16px; height: 8px; border-radius: 999px; background: #4d83da; }
.legend-swatch--solar { background: rgba(255, 209, 82, 0.62); }
.profile-grid { display: grid; gap: 1rem; }
.profile-chart {
  display: grid;
  grid-template-columns: minmax(110px, 0.34fr) minmax(0, 1fr);
  gap: 0.8rem;
  align-items: center;
}
.profile-chart__label strong { display: block; }
.profile-chart__label span { color: var(--ink-soft); font-size: 0.8rem; }
.profile-chart__plot {
  position: relative;
  height: 112px;
  overflow: hidden;
  border-bottom: 1px solid var(--glass-stroke);
  border-left: 1px solid var(--glass-stroke);
  background: repeating-linear-gradient(to top, transparent 0 27px, color-mix(in srgb, var(--ink) 6%, transparent) 28px);
}
.profile-chart__solar {
  position: absolute;
  z-index: 0;
  left: 25%;
  bottom: 0;
  width: 50%;
  height: 94%;
  background: rgba(255, 209, 82, 0.28);
  clip-path: polygon(0 100%, 8% 85%, 18% 61%, 32% 34%, 50% 14%, 68% 34%, 82% 61%, 92% 85%, 100% 100%);
}
.profile-chart__bars {
  position: absolute;
  z-index: 1;
  inset: 0 0 1px;
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  gap: 2px;
  align-items: end;
  padding: 0 3px;
}
.profile-chart__bars span {
  height: var(--bar-height);
  min-height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, #68a0ee, #28559d);
  opacity: 0.88;
}
.profile-chart__axis {
  grid-column: 2;
  display: flex;
  justify-content: space-between;
  margin-top: -0.45rem;
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}
.scenario-card {
  padding: 1.15rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 16px;
  background: var(--glass-bg);
}
.scenario-card__letter {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 0.7rem;
  border-radius: 10px;
  color: #05210c;
  background: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
}
.scenario-card h3 { margin: 0; font-size: 1.02rem; }
.scenario-card p { margin-top: 0.45rem; font-size: 0.9rem; line-height: 1.7; }
.factor-visual {
  overflow: hidden;
  border: 1px solid var(--glass-stroke);
  border-radius: 24px;
  background: #eef4f8;
}
.factor-visual img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.factor-visual figcaption { padding: 0.75rem 1rem; color: var(--ink-soft); font-size: 0.78rem; }
.article-visual {
  overflow: hidden;
  border: 1px solid var(--glass-stroke);
  border-radius: 24px;
  background: #eef4f8;
}
.article-visual img { display: block; width: 100%; height: auto; }
.article-visual figcaption { padding: 0.75rem 1rem; color: var(--ink-soft); font-size: 0.78rem; line-height: 1.6; }
.factor-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}
.factor-item {
  padding: 1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: color-mix(in srgb, var(--glass-bg) 85%, transparent);
}
.factor-item strong { display: block; }
.factor-item span { color: var(--ink-soft); font-size: 0.9rem; }
.analysis-steps { counter-reset: analysis-step; list-style: none; padding: 0 !important; }
.analysis-steps li {
  position: relative;
  padding: 0 0 1.5rem 3.2rem;
  counter-increment: analysis-step;
}
.analysis-steps li::before {
  content: counter(analysis-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
}
.analysis-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 1rem;
  top: 1.8rem;
  bottom: 0.25rem;
  width: 1px;
  background: var(--glass-stroke);
}
.energy-dayline { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 0.7rem; margin-top: 1.4rem; }
.energy-dayline__item { padding: 1.1rem; border: 1px solid var(--glass-stroke); border-radius: 18px; background: var(--glass-bg); }
.energy-dayline__item > span { display: block; color: var(--accent); font-size: 0.72rem; font-weight: 600; }
.energy-dayline__item strong { display: block; margin-top: 0.4rem; font: 600 1rem var(--font-display); }
.energy-dayline__item p { margin-top: 0.4rem !important; color: var(--ink-soft); font-size: 0.8rem; line-height: 1.55; }
.energy-dayline__item--sun { background: linear-gradient(145deg, color-mix(in srgb, #f7cf58 14%, transparent), var(--glass-bg)); }
.energy-dayline__item--dusk { background: linear-gradient(145deg, color-mix(in srgb, #ef8c55 12%, transparent), var(--glass-bg)); }
.energy-dayline__item--night { background: linear-gradient(145deg, color-mix(in srgb, #4765b2 14%, transparent), var(--glass-bg)); }
.energy-dayline__arrow { display: grid; place-items: center; color: var(--accent); }
.reason-list { display: grid; gap: 0.7rem; }
.reason-list section { display: grid; grid-template-columns: auto 1fr; gap: 0.9rem; padding: 1rem; border: 1px solid var(--glass-stroke); border-radius: 16px; background: color-mix(in srgb, var(--glass-bg) 78%, transparent); }
.reason-list section > span { color: var(--accent); font: 600 0.78rem var(--font-display); }
.reason-list h3 { margin: 0; font-size: 1rem; }
.reason-list p { margin-top: 0.25rem !important; color: var(--ink-soft); font-size: 0.88rem; }
.article-note a, .article-body > p a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.comparison-strip { display: grid; grid-template-columns: repeat(3, 1fr); overflow: hidden; border: 1px solid var(--glass-stroke); border-radius: 18px; }
.comparison-strip > div { padding: 1rem; }
.comparison-strip > div + div { border-left: 1px solid var(--glass-stroke); }
.comparison-strip strong, .comparison-strip span { display: block; }
.comparison-strip strong { font-family: var(--font-display); }
.comparison-strip span { margin-top: 0.3rem; color: var(--ink-soft); font-size: 0.8rem; }
.optimizer-demo {
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--glass-stroke));
  border-radius: 24px;
  background:
    radial-gradient(circle at 82% 0%, color-mix(in srgb, #f7cf58 10%, transparent), transparent 36%),
    var(--glass-bg);
}
.optimizer-demo__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid var(--glass-stroke);
}
.optimizer-demo__head strong { display: block; font: 600 1.05rem var(--font-display); }
.optimizer-demo__head span { display: block; margin-top: 0.2rem; color: var(--ink-soft); font-size: 0.76rem; line-height: 1.5; }
.optimizer-demo__controls {
  display: inline-flex;
  flex: 0 0 auto;
  gap: 0.3rem;
  padding: 0.3rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}
.optimizer-demo__controls button {
  padding: 0.55rem 0.8rem;
  border: 0;
  border-radius: 999px;
  color: var(--ink-soft);
  background: transparent;
  font: 600 0.72rem var(--font-sans);
  cursor: pointer;
}
.optimizer-demo__controls button.is-active {
  color: #05210c;
  background: var(--accent);
  box-shadow: 0 5px 20px color-mix(in srgb, var(--accent) 22%, transparent);
}
.optimizer-demo__scene {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 78px;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 1.2rem 1rem;
  min-height: 330px;
  padding: clamp(1.4rem, 4vw, 2.2rem);
  background:
    linear-gradient(180deg, color-mix(in srgb, #7db9ed 8%, transparent), transparent 58%),
    repeating-linear-gradient(90deg, transparent 0 39px, color-mix(in srgb, var(--ink) 3%, transparent) 40px);
}
.optimizer-demo__sun {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #f7cf58;
  box-shadow: 0 0 0 8px rgba(247,207,88,0.12), 0 0 36px rgba(247,207,88,0.42);
}
.optimizer-demo__sun span { position: absolute; inset: -12px; border: 1px solid rgba(247,207,88,0.34); border-radius: inherit; }
.optimizer-demo__array {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}
.optimizer-panel {
  position: relative;
  min-height: 142px;
  padding: 0.55rem;
  border: 1px solid rgba(120,172,226,0.58);
  border-radius: 12px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(255,255,255,0.18) 50% 51%, transparent 52%),
    linear-gradient(0deg, transparent 49%, rgba(255,255,255,0.16) 50% 51%, transparent 52%),
    linear-gradient(145deg, #174675, #082742);
  box-shadow: inset 0 0 22px rgba(110,180,244,0.2), 0 10px 28px rgba(0,0,0,0.12);
  transition: filter 0.55s var(--ease), transform 0.55s var(--ease);
}
.optimizer-panel > i {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(115deg, transparent 15%, rgba(255,255,255,0.2) 34%, transparent 48%);
  transform: translateX(-120%);
}
.optimizer-panel > span {
  position: absolute;
  right: 0.5rem;
  bottom: 0.48rem;
  left: 0.5rem;
  color: rgba(255,255,255,0.82);
  font-size: 0.64rem;
  font-style: normal;
  text-align: center;
}
.optimizer-panel > em {
  position: absolute;
  right: 0.55rem;
  bottom: -0.52rem;
  left: 0.55rem;
  height: 4px;
  border-radius: 999px;
  background: #70a7d6;
  transform: scaleX(0.58);
  transform-origin: left;
  transition: transform 0.65s var(--ease), background 0.45s linear;
}
.optimizer-panel--shaded {
  filter: saturate(0.6) brightness(0.72);
}
.optimizer-panel--shaded::after {
  content: "";
  position: absolute;
  inset: -1px 24% -1px -1px;
  border-radius: inherit 42% 42% inherit;
  background: linear-gradient(115deg, rgba(12,18,23,0.74), rgba(34,49,56,0.48));
}
.optimizer-panel--shaded > span { z-index: 2; }
.optimizer-panel--shaded > em { z-index: 3; transform: scaleX(0.25); background: #d8a35a; }
.optimizer-node {
  position: absolute;
  z-index: 4;
  top: -0.65rem;
  left: 50%;
  padding: 0.25rem 0.38rem;
  border: 1px solid color-mix(in srgb, var(--accent) 54%, transparent);
  border-radius: 6px;
  color: var(--accent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  font: 600 0.54rem var(--font-display);
  opacity: 0;
  transform: translate(-50%, 8px);
  transition: opacity 0.35s linear, transform 0.45s var(--ease);
}
.optimizer-demo__bus {
  position: relative;
  grid-column: 1;
  height: 3px;
  margin-inline: 0.8rem;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink-soft) 35%, transparent);
}
.optimizer-demo__bus::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 100%;
  width: 2rem;
  height: 1px;
  background: color-mix(in srgb, var(--ink-soft) 45%, transparent);
}
.optimizer-demo__bus span {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: translateX(-100%);
  animation: optimizerPulse 2.7s linear infinite;
}
.optimizer-demo__inverter {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  align-self: center;
  min-height: 130px;
  padding: 0.75rem 0.4rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 15px;
  color: var(--ink);
  background: color-mix(in srgb, var(--bg-2) 88%, transparent);
  text-align: center;
  box-shadow: 0 16px 35px rgba(0,0,0,0.16);
}
.optimizer-demo__inverter span, .optimizer-demo__inverter i { color: var(--accent); font-size: 0.58rem; font-style: normal; }
.optimizer-demo__inverter strong { font: 600 0.75rem/1.35 var(--font-display); }
.optimizer-demo__status {
  grid-column: 1 / -1;
  margin: 0 !important;
  padding-top: 0.3rem;
  color: var(--ink-soft) !important;
  font-size: 0.78rem;
  line-height: 1.55;
  text-align: center;
}
.optimizer-demo.is-optimized .optimizer-node { opacity: 1; transform: translate(-50%, 0); }
.optimizer-demo.is-optimized .optimizer-panel:not(.optimizer-panel--shaded) > em { transform: scaleX(0.94); background: var(--accent); }
.optimizer-demo.is-optimized .optimizer-panel--shaded > em { transform: scaleX(0.28); }
.optimizer-demo.is-optimized .optimizer-panel:not(.optimizer-panel--shaded) > i { animation: optimizerPanelSweep 3.4s var(--ease) infinite; }
.optimizer-demo.is-optimized .optimizer-demo__bus { background: color-mix(in srgb, var(--accent) 32%, transparent); }
@keyframes optimizerPulse { to { transform: translateX(100%); } }
@keyframes optimizerPanelSweep { 0%, 18% { transform: translateX(-120%); } 58%, 100% { transform: translateX(120%); } }
.article-cta__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.7rem; }
.backup-path { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--glass-stroke); border-radius: 20px; background: var(--glass-bg); }
.backup-path > div { position: relative; padding: 1.15rem; }
.backup-path > div + div { border-left: 1px solid var(--glass-stroke); }
.backup-path > div:not(:last-child)::after { content: "→"; position: absolute; z-index: 1; right: -0.55rem; top: 1rem; display: grid; place-items: center; width: 1.1rem; height: 1.1rem; border-radius: 50%; color: #05210c; background: var(--accent); font-size: 0.72rem; }
.backup-path span { display: block; color: var(--accent); font: 600 0.72rem var(--font-display); }
.backup-path strong { display: block; margin-top: 0.45rem; font: 600 0.98rem var(--font-display); }
.backup-path p { margin-top: 0.4rem !important; color: var(--ink-soft); font-size: 0.8rem; line-height: 1.55; }
.backup-loads { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.backup-loads section { padding: 1.25rem; border: 1px solid var(--glass-stroke); border-radius: 18px; background: var(--glass-bg); }
.backup-loads__label { margin-bottom: 0.8rem; color: var(--accent) !important; font-weight: 600; }
.backup-loads ul { margin: 0; }
.backup-loads li { font-size: 0.92rem; }
.power-energy-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.power-energy-pair section { padding: clamp(1.25rem, 3vw, 1.7rem); border: 1px solid var(--glass-stroke); border-radius: 20px; background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 8%, transparent), var(--glass-bg)); }
.power-energy-pair span { color: var(--accent); font: 600 clamp(2.4rem, 6vw, 4rem)/1 var(--font-display); }
.power-energy-pair h3 { margin: 0.65rem 0 0; font-size: 1.08rem; }
.power-energy-pair p { margin-top: 0.45rem !important; font-size: 0.88rem; line-height: 1.65; }
.runtime-formula { padding: 1.25rem; border-left: 3px solid var(--accent); border-radius: 0 16px 16px 0; background: color-mix(in srgb, var(--accent) 7%, var(--glass-bg)); }
.runtime-formula > span { display: block; color: var(--accent); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.runtime-formula > strong { display: block; margin-top: 0.45rem; font: 600 clamp(1.05rem, 2.4vw, 1.35rem) var(--font-display); }
.runtime-formula p { margin-top: 0.45rem !important; color: var(--ink-soft); font-size: 0.84rem; line-height: 1.6; }
.system-intent-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
.system-intent-grid section { padding: 1.15rem; border: 1px solid var(--glass-stroke); border-radius: 18px; background: var(--glass-bg); }
.system-intent-grid span { color: var(--accent); font-size: 0.74rem; font-weight: 600; }
.system-intent-grid h3 { margin: 0.5rem 0 0; font-size: 1rem; }
.system-intent-grid p { margin-top: 0.4rem !important; color: var(--ink-soft); font-size: 0.84rem; line-height: 1.6; }
.faq-list { display: grid; gap: 0.75rem; }
.faq-list details {
  padding: 1rem 1.15rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 14px;
  background: var(--glass-bg);
}
.faq-list summary { cursor: pointer; color: var(--ink); font-weight: 600; }
.faq-list details p { margin-top: 0.7rem; }
.article-cta {
  margin-top: clamp(3rem, 7vw, 5rem) !important;
  padding: clamp(1.6rem, 4vw, 2.5rem);
  border-radius: 24px;
  text-align: center;
  background:
    radial-gradient(circle at 80% 10%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 40%),
    var(--glass-bg);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--glass-stroke));
}
.article-cta h2 { margin: 0; font-size: clamp(1.5rem, 3.6vw, 2.2rem); }
.article-cta p { margin-top: 0.6rem; }
.article-cta .contact__cta { margin-top: 1.25rem; }
.related-articles { padding: clamp(3rem, 7vh, 5rem) 0 clamp(5rem, 10vh, 8rem); border-top: 1px solid var(--glass-stroke); }

@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .article-hero__media { aspect-ratio: 1.91 / 1; }
  .backup-path { grid-template-columns: 1fr 1fr; }
  .backup-path > div:nth-child(3) { border-left: 0; }
  .backup-path > div:nth-child(-n+2) { border-bottom: 1px solid var(--glass-stroke); }
  .backup-path > div::after { display: none !important; }
}
@media (max-width: 680px) {
  .article-grid { width: min(100% - 2rem, var(--maxw)); }
  .article-hero { padding-inline: 1rem; }
  .article-layout { width: min(100% - 2rem, 760px); }
  .article-hero__media { border-radius: 20px; }
  .article-hero__caption { right: 0.65rem; bottom: 0.65rem; }
  .scenario-grid, .factor-list, .backup-loads, .power-energy-pair, .system-intent-grid { grid-template-columns: 1fr; }
  .optimizer-demo__head { align-items: flex-start; flex-direction: column; }
  .optimizer-demo__controls { width: 100%; }
  .optimizer-demo__controls button { flex: 1; }
  .optimizer-demo__scene { grid-template-columns: 1fr; min-height: 0; }
  .optimizer-demo__array { grid-template-columns: repeat(2, 1fr); gap: 1.2rem 0.65rem; }
  .optimizer-demo__inverter { grid-column: 1; grid-row: auto; width: min(100%, 150px); min-height: 90px; justify-self: center; }
  .optimizer-demo__bus, .optimizer-demo__status { grid-column: 1; }
  .profile-chart { grid-template-columns: 1fr; gap: 0.45rem; }
  .profile-chart__plot { height: 100px; }
  .profile-chart__axis { grid-column: 1; }
  .energy-dayline { grid-template-columns: 1fr; }
  .energy-dayline__arrow { transform: rotate(90deg); }
  .comparison-strip { grid-template-columns: 1fr; }
  .comparison-strip > div + div { border-top: 1px solid var(--glass-stroke); border-left: 0; }
  .outage-hero__controls { right: 0.65rem; bottom: 0.65rem; left: 0.65rem; justify-content: center; }
  .outage-hero__controls button { flex: 1; justify-content: center; }
  .outage-hero .article-hero__caption { top: 0.65rem; right: 0.65rem; }
}
@media (max-width: 480px) {
  .article-nav .nav__pill { display: none; }
  .article-nav .nav__cta { padding-inline: 0.85rem; font-size: 0.82rem; }
  .article-nav .nav__logo img { height: 29px; }
  .article-hero h1 { font-size: 2rem; }
  .article-hero__media { aspect-ratio: 1.38 / 1; }
  .article-hero__media img { object-position: center bottom; }
  .backup-path { grid-template-columns: 1fr; }
  .backup-path > div, .backup-path > div:nth-child(3) { border-left: 0; border-bottom: 1px solid var(--glass-stroke); }
  .backup-path > div:last-child { border-bottom: 0; }
  .outage-hero__controls button { padding-inline: 0.55rem; font-size: 0.7rem; }
}
@media (prefers-reduced-motion: reduce) {
  .outage-hero .outage-hero__image { transition: opacity 0.2s linear; }
  .optimizer-demo *,
  .optimizer-demo *::before,
  .optimizer-demo *::after { animation: none !important; transition-duration: 0.01ms !important; }
}