/* Energy solution: a shared data network and an industrial operating story. */
.power-page {
  --power-ink: #102b45;
  --power-muted: #536b80;
  --power-blue: #075fd8;
  --power-teal: #087f83;
  --power-line: #d7e3ed;
  --power-fog: #f2f7fb;
  --site-section-space: clamp(56px, 5.5vw, 80px);
  --site-heading-space: 28px;
  --site-title-size: clamp(32px, 3.1vw, 44px);
  --site-section-title-size: clamp(26px, 2.3vw, 32px);
  color: var(--power-ink);
  overflow: visible;
}
.power-page :is(a, button):focus-visible { outline: 3px solid #1495b6; outline-offset: 5px; }
body[data-page] .power-page { font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif; }
.power-page p { text-wrap: pretty; }
.power-hero-category { margin-bottom: 22px; color: #52667b; font-size: 16px; font-weight: 400; line-height: 1.6; }
.power-hero { padding: 24px 0 0; background: #f3f6fa; border-bottom: 1px solid #dce7f1; }
.power-hero .shell { position: relative; }
.power-hero-layout { display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 56px; padding: 20px 0 56px; }
.power-hero-copy { min-width: 0; }
.power-hero h1 { color: #142e49; font-size: clamp(34px, 3.2vw, 44px); letter-spacing: 0; line-height: 1.4; font-weight: 700; }
.power-hero h1 span { display: block; margin-top: 8px; color: #235987; font-size: .82em; font-weight: 500; }
.power-hero-description { max-width: 490px; margin: 24px 0 28px; font-size: 16px; color: var(--power-muted); line-height: 1.9; }
.power-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.power-hero-actions a { display: inline-flex; justify-content: center; align-items: center; gap: 20px; min-height: 48px; padding: 10px 22px; border: 1px solid; border-radius: 3px; font-size: 15px; font-weight: 500; line-height: 1.5; touch-action: manipulation; }
.power-hero-primary { color: #fff; background: var(--power-blue); border-color: var(--power-blue); }
.power-hero-primary:hover { background: #0449ac; border-color: #0449ac; }
.power-hero-secondary { color: #294b66; background: #fff; border-color: #c6d5e2; }
.power-hero-secondary:hover { color: var(--power-blue); border-color: var(--power-blue); }

.power-system { min-width: 0; padding: 25px 26px 22px; color: var(--power-ink); background: #fff; border: 1px solid #ccdae6; border-radius: 5px; box-shadow: 0 12px 32px -20px #294e7030; }
.power-system-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 16px; }
.power-system-top strong { font-size: 17px; font-weight: 600; }
.power-system-top > span { color: #617487; font-size: 13px; }
.power-system-map { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 20px; margin-top: 24px; }
.power-resource { position: relative; min-width: 0; padding: 18px 16px; background: #f8fafc; border: 1px solid #d6e1eb; border-radius: 3px; }
.power-resource-source, .power-resource-grid { grid-row: 1; }
.power-resource-load, .power-resource-storage { grid-row: 3; }
.power-resource::after { position: absolute; left: 50%; width: 1px; height: 23px; background: #a6bbce; content: ''; }
.power-resource-source::after, .power-resource-grid::after { top: 100%; }
.power-resource-load::after, .power-resource-storage::after { bottom: 100%; }
.power-resource > div { display: flex; align-items: center; gap: 10px; }
.power-resource-key { color: #235987; font-size: 24px; font-weight: 500; line-height: 1.3; }
.power-resource strong { color: #233e57; font-size: 15px; font-weight: 600; line-height: 1.5; }
.power-resource > div > svg { flex: 0 0 auto; margin-left: auto; color: #68839a; }
.power-resource p { margin-top: 12px; color: #536b80; font-size: 14px; line-height: 1.7; }
.power-system-center { grid-column: 1 / -1; grid-row: 2; display: flex; align-items: center; justify-content: center; gap: 12px; min-height: 54px; padding: 12px; color: #fff; background: #254e73; border-radius: 3px; }
.power-system-center strong { font-family: Arial, sans-serif; font-size: 21px; font-weight: 600; letter-spacing: 0; }
.power-system-center span { font-size: 14px; }
.power-system-center > svg { flex: 0 0 auto; }
.power-system figcaption { margin-top: 20px; padding-top: 16px; border-top: 1px solid #e0e8ef; }
.power-system figcaption p { color: #536b80; font-size: 14px; line-height: 1.75; }

.power-section-nav { position: sticky; top: var(--header-height); z-index: 30; background: #fffffff5; border-bottom: 1px solid var(--power-line); backdrop-filter: blur(12px); }
.power-section-nav .shell { display: flex; align-items: center; gap: 32px; min-height: 62px; overflow-x: auto; scrollbar-width: thin; }
.power-section-nav a { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 7px; padding: 19px 0; font-size: 15px; color: var(--power-muted); white-space: nowrap; }
.power-section-nav a:hover { color: var(--power-blue); }
.power-section-nav a[aria-current="location"] { color: var(--power-blue); font-weight: 700; box-shadow: inset 0 -3px 0 var(--power-blue); }
.power-section-nav a:focus-visible { outline-offset: -3px; }
/* The document scroll padding already accounts for the fixed site header. */
.power-page .power-section { padding-block: var(--site-section-space); scroll-margin-top: 64px; }
.power-section-tinted { background: var(--power-fog); }
.power-section-heading { display: block; margin-bottom: 32px; }
.power-section-heading h2 { color: var(--power-ink); font-size: 32px; font-weight: 700; line-height: 1.4; letter-spacing: 0; }
.power-vpp-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; background: #fff; border: 1px solid var(--power-line); border-radius: 4px; }
.power-vpp-flow li { position: relative; padding: 30px 32px; }
.power-vpp-flow li + li { border-left: 1px solid var(--power-line); }
.power-vpp-flow li:nth-child(2) { background: #eaf2fb; }
.power-vpp-step-title { display: flex; align-items: center; gap: 14px; }
.power-vpp-step-title svg { flex: 0 0 auto; color: var(--power-blue); }
.power-vpp-step-title h3 { font-size: 20px; font-weight: 700; line-height: 1.5; color: var(--power-ink); }
.power-vpp-flow li > p { margin-top: 14px; font-size: 15px; line-height: 1.8; color: var(--power-muted); }
.power-vpp-arrow { position: absolute; top: calc(50% - 13px); right: -13px; z-index: 1; padding: 3px; background: #fff; color: var(--power-blue); }
.power-vpp-context { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 28px; }
.power-vpp-context h3 { color: var(--power-ink); font-size: 18px; font-weight: 700; line-height: 1.6; }
.power-vpp-context p { color: var(--power-muted); font-size: 15px; line-height: 1.8; }
.power-challenges { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--power-line); }
.power-challenges article { display: grid; grid-template-columns: 30px minmax(0, 1fr); column-gap: 16px; row-gap: 10px; align-content: start; padding: 28px 32px; }
.power-challenges article:first-child { padding-left: 0; }
.power-challenges article:last-child { padding-right: 0; }
.power-challenges article + article { border-left: 1px solid var(--power-line); }
.power-challenges article > svg { grid-row: 1 / 3; color: var(--power-blue); margin-top: 3px; }
.power-challenges :is(h3, p) { grid-column: 2; }
.power-page :is(.power-challenges, .power-proof-details) h3 { color: var(--power-ink); font-size: 20px; font-weight: 600; line-height: 1.5; }
.power-page :is(.power-challenges, .power-proof-details) p { margin-top: 11px; font-size: 15px; line-height: 1.85; color: var(--power-muted); }
.power-page .power-challenges p { margin-top: 0; }

.power-dispatch { border: 1px solid #c9dceb; border-radius: 4px; overflow: hidden; background: #fff; }
.power-mode-selector { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--power-fog); border-bottom: 1px solid #c9dceb; }
.power-mode-selector button { position: relative; display: flex; justify-content: center; align-items: center; gap: 10px; min-height: 60px; padding: 12px; border: 0; background: transparent; color: var(--power-muted); font-size: 15px; cursor: pointer; }
.power-mode-selector button + button { border-left: 1px solid #c9dceb; }
.power-mode-selector button[aria-pressed='true'] { background: #fff; color: var(--power-blue); font-weight: 700; box-shadow: inset 0 3px 0 var(--power-blue); }
.power-mode-selector button:hover { background: #e9f2fc; }
.power-page .power-mode-selector button:focus-visible { outline-offset: -5px; }
.power-mode-dot { width: 6px; height: 6px; background: #9bb0c1; border-radius: 50%; }
.power-mode-selector button[aria-pressed='true'] .power-mode-dot { background: var(--power-blue); }
.power-mode-selector button svg { margin-left: 12px; }
.power-dispatch-content { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 32px; padding: 30px; min-height: 270px; }
.power-dispatch-copy .power-signal { display: flex; align-items: center; gap: 8px; color: var(--power-muted); font-size: 14px; line-height: 1.7; margin-bottom: 13px; }
.power-signal svg { flex-shrink: 0; color: var(--power-teal); }
.power-dispatch-copy h3 { color: var(--power-ink); font-size: 23px; line-height: 1.5; }
.power-dispatch-copy > p:not(.power-signal) { margin-top: 14px; color: var(--power-muted); font-size: 15px; line-height: 1.8; }
.power-dispatch-copy > p.power-dispatch-boundary { display: flex; align-items: flex-start; gap: 7px; font-size: 14px; }
.power-dispatch-boundary svg { flex-shrink: 0; margin-top: 3px; }
.power-dispatch-visual { padding: 22px 24px; background: #f1f6fb; border-radius: 4px; }
.power-flow-caption { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--power-muted); }
.power-flow-caption > span:first-child { color: #304f6c; font-weight: 700; }
.power-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; list-style: none; margin-top: 25px; }
.power-flow li { position: relative; display: flex; flex-direction: column; align-items: center; gap: 12px; min-width: 0; }
.power-flow-icon { display: grid; place-items: center; width: 58px; height: 58px; border: 1px solid #ccdae8; border-radius: 8px; background: #fff; color: #638097; transition: background-color 160ms ease; }
.power-flow li[data-active='true'] .power-flow-icon { background: var(--power-blue); border-color: var(--power-blue); color: #fff; box-shadow: 0 6px 15px #075fd820; }
.power-flow strong { color: #3c5770; font-size: 14px; font-weight: 500; text-align: center; line-height: 1.5; word-break: keep-all; }
.power-flow-arrow { position: absolute; top: 20px; left: calc(100% - 4px); color: #86a3bd; }
.power-flow-result { display: flex; gap: 8px; align-items: flex-start; margin-top: 24px; padding-top: 16px; border-top: 1px solid #d6e2ed; font-size: 14px; line-height: 1.8; color: #225e76; }
.power-flow-result svg { flex: 0 0 auto; margin-top: 2px; }
.power-coordination { margin-top: 28px; }
.power-coordination-levels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; padding-top: 26px; border-top: 1px solid var(--power-line); }
.power-coordination-levels article { display: flex; align-items: flex-start; gap: 16px; }
.power-coordination-levels article > span { flex: 0 0 auto; padding: 0; color: #536476; font-size: 14px; font-weight: 400; line-height: 1.7; }
.power-coordination-levels h3 { font-size: 17px; line-height: 1.6; color: var(--power-ink); }
.power-coordination-levels p { color: var(--power-muted); font-size: 15px; line-height: 1.85; margin-top: 8px; }
.power-operating-constraints { display: grid; grid-template-columns: 100px minmax(0, 1fr); align-items: start; gap: 24px; padding: 24px 0 0; margin-top: 0; }
.power-operating-constraints h3 { color: var(--power-ink); font-size: 18px; font-weight: 700; line-height: 1.6; }
.power-operating-constraints dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.power-operating-constraints dt { color: var(--power-ink); font-size: 14px; font-weight: 700; }
.power-operating-constraints dd { margin: 7px 0 0; color: var(--power-muted); font-size: 14px; line-height: 1.8; }

.power-case-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 24px; align-items: stretch; }
.power-case-image { display: grid; align-content: center; min-width: 0; margin: 0; padding: 12px; border: 1px solid var(--power-line); border-radius: 4px; background: #fff; }
.power-case-image img { width: 100%; height: auto; }
.power-image-trigger { display: block; width: 100%; padding: 0; border: 0; color: inherit; background: transparent; cursor: zoom-in; text-align: left; }
.power-image-caption { display: block; padding: 12px 3px 2px; color: #61778c; font-size: 14px; line-height: 1.7; }
.power-image-dialog { width: min(1180px, calc(100vw - 48px)); max-width: none; max-height: calc(100dvh - 48px); padding: 0; border: 1px solid var(--power-line); border-radius: 6px; color: var(--power-ink); background: #fff; box-shadow: 0 24px 80px #07182c55; }
.power-image-dialog[open] { display: flex; flex-direction: column; }
.power-image-dialog::backdrop { background: #07182cc9; }
.power-image-dialog-head { display: flex; flex: 0 0 auto; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px 6px; }
.power-image-dialog-head h2 { font-size: 20px; font-weight: 700; line-height: 1.5; }
.power-image-dialog-head > div { display: flex; gap: 8px; flex-shrink: 0; }
.power-image-dialog-head button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-width: 44px; min-height: 44px; padding: 8px 12px; color: var(--power-ink); background: #fff; border: 1px solid var(--power-line); border-radius: 4px; font-size: 14px; cursor: pointer; }
.power-image-dialog-head button:hover { background: var(--power-fog); }
.power-image-dialog-help { flex: 0 0 auto; padding: 0 20px 12px; color: var(--power-muted); font-size: 13px; }
.power-image-viewport { min-height: 0; padding: 16px; overflow: auto; overscroll-behavior: contain; background: #eef3f7; }
.power-image-viewport img { display: block; width: 100%; max-height: calc(100dvh - 160px); object-fit: contain; }
.power-image-viewport.is-zoomed img { width: 1540px; max-width: none; max-height: none; }
.power-image-viewport:focus-visible { outline: 3px solid var(--power-blue); outline-offset: -3px; }
.power-case-investment { display: flex; gap: 14px; align-items: flex-start; padding: 18px 22px; margin-top: 20px; background: var(--power-fog); border-radius: 4px; }
.power-case-investment > div { display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 24px; row-gap: 4px; }
.power-case-investment > svg { flex: 0 0 auto; color: var(--power-teal); }
.power-case-investment strong { color: var(--power-ink); font-size: 15px; line-height: 1.7; }
.power-case-investment p { font-size: 14px; color: var(--power-muted); }
.power-case-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; padding: 12px 20px; background: #102e4b; border-radius: 4px; align-content: center; }
.power-case-metrics > div { padding: 24px 10px; min-width: 0; }
.power-case-metrics > div:nth-child(n + 3) { border-top: 1px solid #35526c; }
.power-case-metrics dt { color: #b5cddf; font-size: 13px; line-height: 1.6; }
.power-case-metrics dd { margin: 15px 0 0; color: #fff; font-family: Arial, "Microsoft YaHei", sans-serif; font-size: clamp(28px, 2.6vw, 36px); font-weight: 600; line-height: 1.2; white-space: nowrap; font-variant-numeric: tabular-nums; }
.power-case-metrics dd > span { font-family: 'Microsoft YaHei', sans-serif; font-size: 12px; font-weight: 400; letter-spacing: 0; margin-left: 7px; color: #a9cbdc; }
.power-proof-details { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 28px; }
.power-proof-details article { padding-top: 24px; border-top: 1px solid var(--power-line); }
.power-case-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 28px; padding: 24px 0; border-block: 1px solid var(--power-line); }
.power-case-facts > div { display: flex; flex-direction: column; gap: 9px; padding: 0 26px; }
.power-case-facts > div + div { border-left: 1px solid var(--power-line); }
.power-case-facts dt { color: var(--power-muted); font-size: 14px; line-height: 1.6; }
.power-case-facts dd { color: var(--power-blue); font-family: Arial, "Microsoft YaHei", sans-serif; font-size: 23px; line-height: 1.3; margin: 0; font-variant-numeric: tabular-nums; }
.power-evidence-details { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 32px; margin-top: 26px; }
.power-evidence-details > h3 { margin: 0; color: var(--power-ink); font-size: 18px; line-height: 1.6; }
.power-evidence-details > div { display: grid; gap: 8px; }
.power-evidence-details p { color: var(--power-muted); font-size: 15px; line-height: 1.85; }

@media (max-width: 1100px) {
  .power-hero-layout { gap: 28px; }
  .power-system { padding-inline: 20px; }
  .power-system-map { column-gap: 14px; }
  .power-resource { padding-inline: 12px; }
  .power-section-nav .shell { gap: 25px; }
  .power-dispatch-content { padding: 28px; gap: 25px; }
  .power-dispatch-visual { padding-inline: 16px; }
  .power-case-metrics { padding-inline: 12px; }
  .power-case-metrics > div { padding-inline: 12px; }
}
@media (max-width: 900px) {
  .power-vpp-flow li { padding: 24px 20px; }
  .power-vpp-step-title { gap: 10px; }
  .power-vpp-step-title h3 { font-size: 18px; }
  .power-coordination-levels { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
  .power-coordination-levels article { gap: 12px; }
  .power-operating-constraints { grid-template-columns: 1fr; gap: 14px; }
  .power-hero-layout { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .power-hero-copy { max-width: 650px; }
  .power-hero h1 { font-size: 40px; }
  .power-hero-description { max-width: 560px; }
  .power-system { width: 100%; max-width: 650px; margin-inline: auto; }
  .power-challenges article { padding-inline: 20px; }
  .power-dispatch-content { grid-template-columns: 1fr; }
  .power-dispatch-copy .power-dispatch-boundary { margin-top: 12px; }
  .power-dispatch-visual { padding: 24px; }
  .power-flow-arrow { left: calc(100% - 4px); }
  .power-case-layout { grid-template-columns: 1fr; }
  .power-case-metrics { padding: 12px 20px; }
  .power-case-metrics > div { padding: 22px 16px; }
  .power-case-metrics dd { font-size: 29px; }
  .power-case-metrics dd > span { font-size: 12px; margin-left: 6px; }
  .power-proof-details { gap: 24px; }
}
@media (max-width: 600px) {
  .power-page { --site-section-space: 44px; --site-heading-space: 24px; --site-title-size: clamp(27px, 7.4vw, 36px); }
  .power-vpp-flow { grid-template-columns: 1fr; }
  .power-vpp-flow li + li { border-left: 0; border-top: 1px solid var(--power-line); }
  .power-vpp-arrow { top: auto; right: calc(50% - 13px); bottom: -13px; transform: rotate(90deg); }
  .power-vpp-context { grid-template-columns: 1fr; gap: 12px; margin-top: 24px; }
  .power-coordination-levels { grid-template-columns: 1fr; gap: 22px; }
  .power-coordination-levels article { flex-direction: row; gap: 13px; }
  .power-operating-constraints { padding-top: 20px; }
  .power-operating-constraints dl { grid-template-columns: 1fr; gap: 14px; }
  .power-operating-constraints dl > div { display: grid; grid-template-columns: 70px minmax(0, 1fr); gap: 12px; }
  .power-operating-constraints dd { margin-top: 0; }
  .power-evidence-details { grid-template-columns: 1fr; gap: 12px; }
  .power-mode-selector { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .power-mode-selector button:nth-child(3) { border-left: 0; }
  .power-mode-selector button:nth-child(n + 3) { border-top: 1px solid #c9dceb; }
  .power-hero { padding-top: 20px; }
  .power-hero-layout { padding-top: 4px; gap: 30px; }
  .power-hero h1 { font-size: clamp(27px, 7.4vw, 36px); }
  .power-hero h1 span { font-size: .85em; margin-top: 6px; }
  .power-hero-description { margin: 14px 0 20px; font-size: 15px; }
  .power-hero-category { margin-bottom: 16px; font-size: 15px; }
  .power-hero-actions { gap: 10px; }
  .power-hero-actions a { flex: 1 1 auto; gap: 10px; padding-inline: 14px; font-size: 14px; }
  .power-system { padding: 20px 16px 18px; }
  .power-system-map { gap: 18px 12px; margin-top: 20px; }
  .power-system-top strong { font-size: 16px; }
  .power-system-top > span { font-size: 12px; }
  .power-resource { padding: 14px 10px; }
  .power-resource::after { height: 19px; }
  .power-resource > div { gap: 8px; }
  .power-resource > div > svg { display: none; }
  .power-resource-key { font-size: 22px; }
  .power-resource strong { font-size: 14px; }
  .power-resource p { font-size: 14px; margin-top: 10px; }
  .power-system-center { gap: 10px; }
  .power-system-center span { font-size: 13px; }
  .power-system figcaption p { font-size: 14px; }
  .power-section-nav .shell { min-height: 53px; gap: 23px; }
  .power-section-nav a { font-size: 14px; padding-block: 16px; }
  .power-page .power-section { scroll-margin-top: 56px; }
  .power-section-heading { margin-bottom: 24px; }
  .power-section-heading h2 { font-size: 26px; }
  .power-challenges { grid-template-columns: 1fr; }
  .power-challenges article, .power-challenges article:first-child, .power-challenges article:last-child { padding: 22px 0; }
  .power-challenges article + article { border-left: 0; border-top: 1px solid var(--power-line); }
  .power-mode-selector button { gap: 7px; font-size: 13px; padding: 10px 5px; min-height: 55px; }
  .power-mode-selector button svg { display: none; }
  .power-dispatch-content { padding: 24px 16px 16px; gap: 23px; }
  .power-dispatch-copy h3 { font-size: 22px; }
  .power-dispatch-visual { padding: 17px 12px; }
  .power-flow { grid-template-columns: 1fr; gap: 20px; margin-top: 20px; }
  .power-flow li { display: grid; grid-template-columns: 44px minmax(0, 1fr); align-items: center; column-gap: 14px; }
  .power-flow-icon { width: 44px; height: 44px; }
  .power-flow-icon svg { width: 23px; height: 23px; }
  .power-flow strong { font-size: 14px; max-width: none; text-align: left; word-break: normal; }
  .power-flow-arrow { width: 16px; top: auto; bottom: -20px; left: 14px; transform: rotate(90deg); }
  .power-flow-caption { flex-wrap: wrap; font-size: 12px; }
  .power-flow-result { font-size: 14px; margin-top: 20px; }
  .power-case-layout { gap: 25px; }
  .power-image-dialog { width: calc(100vw - 20px); max-height: calc(100dvh - 24px); }
  .power-image-dialog-head { flex-wrap: wrap; gap: 8px; padding: 12px 12px 6px; }
  .power-image-dialog-head h2 { flex: 1 0 100%; font-size: 18px; }
  .power-image-dialog-head > div { width: 100%; justify-content: space-between; }
  .power-image-dialog-help { padding-inline: 12px; }
  .power-image-viewport { padding: 12px; }
  .power-image-viewport img { max-height: calc(100dvh - 200px); }
  .power-image-viewport.is-zoomed img { max-height: none; }
  .power-case-investment { padding: 16px; }
  .power-case-investment strong { font-size: 14px; }
  .power-case-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 8px 13px; }
  .power-case-metrics > div { padding: 24px 8px; }
  .power-case-metrics > div:nth-child(n + 3) { border-top: 1px solid #35526c; }
  .power-case-metrics dd { font-size: clamp(28px, 7.8vw, 38px); }
  .power-case-metrics dt { min-height: 3.2em; font-size: 13px; }
  .power-proof-details { grid-template-columns: 1fr; margin-top: 28px; gap: 22px; }
  .power-proof-details article { padding-top: 20px; }
  .power-case-facts { grid-template-columns: 1fr; padding: 0; }
  .power-case-facts > div { flex-direction: row; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 0; }
  .power-case-facts > div + div { border-left: 0; border-top: 1px solid var(--power-line); }
}
/* Keep mobile utility controls within the header on this topic page. */
@media (max-width: 1060px) {
  body[data-page] .power-page ~ .ai-launcher,
  body[data-page] .power-page ~ .back-to-top {
    top: calc((var(--header-height) - 44px) / 2);
    bottom: auto;
    z-index: 1100;
    width: 44px;
    height: 44px;
    border-radius: 4px;
    box-shadow: none;
  }
  body[data-page] .power-page ~ .ai-launcher { right: calc(max(16px, env(safe-area-inset-right)) + 52px); }
  body[data-page] .power-page ~ .back-to-top { right: calc(max(16px, env(safe-area-inset-right)) + 104px); }
  body[data-page] .power-page ~ .ai-launcher:hover { box-shadow: none; transform: none; }
  body[data-page] .power-page ~ .ai-panel {
    top: calc(var(--header-height) + 12px);
    bottom: auto;
    z-index: 1100;
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
    width: auto;
    max-width: 420px;
    height: min(560px, calc(100dvh - var(--header-height) - 24px));
    min-height: 0;
    margin-left: auto;
  }
}
@media (prefers-reduced-motion: reduce) {
  .power-flow-icon { transition: none; }
}