@charset "UTF-8";
:root {
  --background: #ffffff;
  --foreground: #10213c;
  --secondary: #63758e;
  --accent: #1768ff;
  --line: #dce5f1;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body { margin: 0; background: var(--background); color: var(--foreground); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body.dialog-open { overflow: hidden; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
p, h1, h2, h3 { margin: 0; }
img, video { display: block; max-width: 100%; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
::selection { color: #fff; background: #1768ff; }
:focus-visible { outline: 3px solid #1768ff; outline-offset: 6px; }
.svg-definitions { position: absolute; width: 0; height: 0; overflow: hidden; }
.page-width { width: min(1280px, calc(100% - 112px)); margin-inline: auto; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 200; padding: 14px 20px; background: var(--accent); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.section-label { font-size: 12px; font-weight: 550; color: var(--accent); letter-spacing: 1.5px; }

/* Daylight architecture and a bold, editorial opening. */
.site-header { height: 100px; position: absolute; top: 0; left: 0; width: 100%; z-index: 50; display: flex; align-items: center; justify-content: space-between; padding-inline: 4.5%; transition: background .25s; }
.site-header.scrolled { position: fixed; height: 78px; background: #ffffffed; backdrop-filter: blur(22px); box-shadow: 0 1px 0 #2039560c; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 43px; height: 45px; stroke-width: 2.4; stroke: var(--accent); stroke-linecap: square; stroke-linejoin: miter; }
.brand-name { font-size: 24px; font-weight: 650; letter-spacing: 3px; line-height: 1.2; white-space: nowrap; }
.brand-name small { display: block; font-size: 8px; letter-spacing: 1.4px; font-weight: 400; color: #647895; margin-top: 7px; }
.main-nav { display: flex; align-items: center; gap: 45px; font-size: 14px; font-weight: 500; letter-spacing: 1px; }
.main-nav a { padding: 24px 0; color: #314967; transition: color .2s; position: relative; }
.main-nav a:hover, .main-nav a.active { color: var(--accent); }
.main-nav a.active:after { content: ""; position: absolute; bottom: 12px; left: 0; right: 0; height: 2px; background: var(--accent); }
.menu-toggle { display: none; flex-direction: column; align-items: center; justify-content: center; gap: 7px; width: 44px; height: 44px; }
.menu-toggle span { height: 1.5px; width: 25px; background: currentColor; transition: transform .2s; }
.hero { position: relative; isolation: isolate; height: 96svh; min-height: 770px; max-height: 1060px; overflow: hidden; background: #ecf6ff; }
.hero-media, .hero-shade { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero-media video { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-shade { background: linear-gradient(180deg, #f6faffd9, transparent 23%), linear-gradient(90deg, #f1f7fded 0%, #f1f7fda6 27%, #f1f7fd08 68%), linear-gradient(0deg, #fff 0%, #ffffffc9 5%, transparent 24%); }
.hero-copy { padding-top: clamp(220px, 27vh, 320px); animation: arrival 1s both; }
.hero-tag { font-size: 12px; color: #215ab0; letter-spacing: 1.5px; margin-bottom: 28px; display: flex; align-items: center; gap: 9px; }
.hero-tag > span { display: block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px #1768ff12; }
.hero h1 { font-size: clamp(64px, 6vw, 94px); font-weight: 650; letter-spacing: -1px; line-height: 1.23; }
.hero-description { font-size: 16px; line-height: 1.9; color: #4c6684; margin-top: 28px; letter-spacing: .5px; }
.hero-actions { display: flex; align-items: center; gap: 33px; margin-top: 35px; }
.primary-link { background: var(--accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; gap: 32px; padding: 0 24px; min-height: 53px; border-radius: 5px; font-size: 13px; font-weight: 500; transition: background .2s, transform .2s; box-shadow: 0 10px 26px #1768ff1c; }
.primary-link svg { width: 18px; height: 18px; }
.primary-link:hover { background: #0051e5; transform: translateY(-2px); }
.film-button { display: flex; align-items: center; gap: 12px; font-size: 12px; padding: 10px 0; color: #244976; }
.play-icon { width: 33px; height: 33px; border-radius: 50%; border: 1px solid #3b629677; display: flex; align-items: center; justify-content: center; transition: background .2s; }
.play-icon:after { content: ""; border-left: 6px solid currentColor; border-top: 4px solid transparent; border-bottom: 4px solid transparent; margin-left: 2px; }
.film-button:hover .play-icon { background: #1768ff16; }
.hero-bottom { position: absolute; left: 0; right: 0; bottom: 35px; display: flex; align-items: center; justify-content: space-between; }
.scroll-cue { display: inline-flex; align-items: center; gap: 15px; font-size: 10px; color: #56728e; letter-spacing: 1px; }
.scroll-line { height: 32px; width: 1px; background: linear-gradient(transparent,#1768ff); position: relative; }
.scroll-line:after { content: ""; position: absolute; bottom: 0; width: 5px; height: 5px; left: -2px; border-right: 1px solid var(--accent); border-bottom: 1px solid var(--accent); transform: rotate(45deg); }
.motion-toggle { display: flex; align-items: center; gap: 9px; font-size: 10px; color: #44688c; min-height: 44px; padding: 10px 0 10px 15px; }
.pause-icon { height: 9px; width: 7px; border-left: 1.5px solid; border-right: 1.5px solid; }
.motion-toggle.paused .pause-icon { width: 0; height: 0; border-left: 6px solid; border-right: 0; border-top: 4px solid transparent; border-bottom: 4px solid transparent; }
@keyframes arrival { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }

/* Three large photographic scenes add their own light and color. */
.product-stories { padding: 90px 0 65px; }
.product-intro { display: flex; justify-content: space-between; align-items: flex-end; gap: 65px; margin-bottom: 40px; }
.product-intro h2, .technology-intro h2 { font-size: clamp(38px, 3.4vw, 52px); font-weight: 600; line-height: 1.35; letter-spacing: -.4px; margin-top: 22px; }
.product-intro > p { font-size: 15px; line-height: 2; color: #667a94; padding-bottom: 4px; }
.product-gallery { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.product-card { position: relative; height: 530px; border-radius: 13px; overflow: hidden; isolation: isolate; background: #dce9f5; }
.product-card > img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2,.7,.3,1); }
.product-card:after { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: linear-gradient(0deg,#061c36eb 0%,#102d4ed1 18%,#17384b50 43%,transparent 70%); }
.product-card:hover > img { transform: scale(1.035); }
.product-card-content { position: absolute; bottom: 24px; left: 28px; right: 28px; z-index: 1; color: #fff; }
.product-card-content > p:first-child { font-size: 11px; color: #e0ecff; letter-spacing: .6px; margin-bottom: 12px; }
.product-card h3 { font-size: 29px; font-weight: 550; line-height: 1.4; letter-spacing: .2px; }
.card-description { font-size: 14px; line-height: 1.85; color: #e6edf7; margin-top: 12px; }
.card-link { display: flex; align-items: center; justify-content: space-between; width: 100%; color: #f4f7ff; padding: 15px 0 0; border-top: 1px solid #e4eff84a; margin-top: 23px; font-size: 13px; }
.card-link > span { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 1px solid #ffffff5e; transition: color .2s,background .2s; }
.card-link svg { width: 16px; height: 16px; }
.card-link:hover > span { background: #fff; color: var(--accent); }
.card-link:focus-visible { outline-color: #fff; }
.product-gallery-foot { display: flex; justify-content: space-between; gap: 25px; color: #73859b; font-size: 11px; margin-top: 23px; }
.product-gallery-foot > span { font-size: 9px; color: #8796a9; }

/* Technical drawings use blue as an active signal. */
.intelligence { padding: 80px 0 60px; background: linear-gradient(#fff,#f2f7ff 40%,#f8fbff 75%,#fff); }
.technology-intro { display: flex; justify-content: space-between; align-items: flex-end; gap: 80px; }
.technology-intro > p { font-size: 15px; line-height: 2; color: #667d9a; padding-bottom: 4px; padding-right: 30px; }
.engine-steps { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 50px; }
.engine-step { position: relative; text-align: left; padding: 0 20px 24px 0; border-bottom: 1px solid #ccdbea; }
.engine-step:after { content: ""; height: 3px; position: absolute; left: 0; right: 0; bottom: -1px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s; }
.engine-step.active:after { transform: scaleX(1); }
.engine-step > span { display: block; color: #83a0c3; font-family: Arial,sans-serif; font-size: 11px; margin-bottom: 17px; }
.engine-step strong { font-size: 29px; font-weight: 550; letter-spacing: 1px; color: #5d799e; transition: color .2s; }
.engine-step.active strong, .engine-step:hover strong { color: var(--accent); }
.engine-step small { display: block; margin-top: 9px; font-size: 12px; color: #6a829e; }
.engine-detail { display: grid; grid-template-columns: 1fr 3fr; gap: 15px; padding: 24px 0 15px; }
#engine-state { font-size: 14px; color: #2b5c99; line-height: 1.9; }
#engine-explanation { font-size: 14px; color: #667f9c; line-height: 1.9; min-height: 27px; }
.energy-visual { margin-top: 26px; }
.chart-heading, .chart-foot { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.chart-heading > p { font-size: 11px; color: #567297; letter-spacing: .5px; }
.mode-switch { display: flex; gap: 24px; }
.mode-switch button { font-size: 11px; color: #8597ae; padding: 12px 0; }
.mode-switch button.active { color: var(--accent); }
.mode-switch button.active:before { content: ""; display: inline-block; width: 5px; height: 5px; border-radius: 50%; margin-right: 7px; background: currentColor; vertical-align: middle; }
.load-chart { height: 180px; margin-top: 22px; }
.load-chart > svg { width: 100%; height: 100%; overflow: visible; }
.chart-baseline { stroke: #54779e; opacity: .24; stroke-width: 1; stroke-dasharray: 3 6; }
#chart-area { stroke: none; }
#chart-fill stop { stop-color: #2675ff; }
#chart-fill stop:first-child { stop-opacity: .2; }
.chart-line { stroke: #1768ff; stroke-width: 2.5; fill: none; }
.energy-visual.manual .chart-line { stroke: #7998ba; }
.chart-foot { margin-top: 12px; }
.chart-foot > p { font-size: 11px; color: #4e75a4; }
.chart-foot > small { font-size: 9px; color: #8095ae; }

/* One vivid brand statement, kept inside the shared page grid. */
.deployment { padding: 70px 0 65px; }
.deployment-panel { position: relative; isolation: isolate; overflow: hidden; border-radius: 24px; background: linear-gradient(115deg,#0751ec,#1768ff 64%,#347fff); padding: 56px 60px 35px; color: #fff; }
.panel-mark { position: absolute; z-index: -1; width: 580px; height: 580px; left: 5%; top: -20px; transform: rotate(-10deg); opacity: .09; stroke-width: .6; stroke: #fff; stroke-linecap: square; stroke-linejoin: miter; }
.deployment-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 110px; }
.deployment .section-label { color: #c4e0ff; font-weight: 450; }
.deployment h2 { font-size: clamp(39px,3.4vw,54px); font-weight: 550; line-height: 1.35; margin-top: 24px; letter-spacing: .2px; }
.deployment-intro { font-size: 13px; line-height: 2; color: #d3e6ff; margin-top: 24px; }
.compatibility-list { padding-top: 9px; }
.compatibility-list article { padding: 21px 0; border-bottom: 1px solid #c4e0ff3b; }
.compatibility-list article:first-child { padding-top: 0; }
.compatibility-list article:last-child { padding-bottom: 0; border-bottom: 0; }
.compatibility-list h3 { font-size: 19px; font-weight: 550; letter-spacing: 1px; }
.compatibility-list p { font-size: 14px; color: #d8e9ff; line-height: 1.95; margin-top: 9px; }
.efficiency-line { border-top: 1px solid #c4e0ff4a; padding-top: 24px; margin-top: 42px; }
.efficiency-line > p { font-size: 17px; line-height: 1.7; color: #d9eaff; }
.efficiency-line > p span { color: #fff; font-weight: 550; }
.efficiency-line > small { display: block; font-size: 8px; line-height: 1.9; color: #c7defa; margin-top: 11px; }

.about { padding: 20px 0 44px; }
.about-intro { display: flex; align-items: center; justify-content: space-between; gap: 48px; }
.about-intro > p:last-child { font-size: 15px; line-height: 2; color: #617994; width: 47%; }
.about h2 { font-size: 28px; font-weight: 550; letter-spacing: 1px; line-height: 1.4; margin-top: 14px; }
.site-footer { background: #10213c; color: #aebdd1; padding: 21px 0; }
.site-footer .page-width { display: flex; align-items: center; justify-content: space-between; gap: 24px; font-size: 9px; }
.site-footer p { color: #8ca0bc; }
.site-footer .footer-contact { justify-content: flex-start; gap: 64px; padding: 12px 0 27px; margin-bottom: 16px; border-bottom: 1px solid #ffffff1a; }
.footer-contact h2 { font-size: 14px; font-weight: 500; color: #dce6f4; }
.footer-contact address { display: flex; flex-wrap: wrap; gap: 24px 64px; font-style: normal; }
.footer-contact address a { display: flex; flex-direction: column; justify-content: center; gap: 7px; min-height: 44px; }
.footer-contact address span { font-size: 11px; color: #93a8c4; }
.footer-contact address strong { font-size: 17px; font-weight: 500; color: #f2f6ff; }
.footer-contact address a:hover strong { color: #9fc3ff; }
.back-top { display: flex; gap: 12px; align-items: center; padding: 10px 0; }
.back-top svg { width: 13px; height: 13px; transform: rotate(-90deg); }

/* Accessible product reading and film playback. */
dialog { padding: 46px; width: min(710px,calc(100% - 40px)); max-height: 88svh; background: #fff; color: var(--foreground); border: 1px solid #bed1e954; border-radius: 15px; box-shadow: 0 25px 120px #05172f44; overflow: auto; }
dialog::backdrop { background: #102b4b88; backdrop-filter: blur(12px); }
dialog .section-label { font-size: 10px; margin-bottom: 23px; }
dialog h2 { font-size: 29px; font-weight: 550; line-height: 1.5; padding-right: 25px; }
.dialog-close { position: absolute; top: 13px; right: 13px; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; z-index: 2; color: #7087a4; }
.dialog-close svg { width: 21px; height: 21px; }
.dialog-close:hover { color: var(--accent); }
.detail-intro { font-size: 15px; line-height: 2; color: #667c98; margin: 20px 0 28px; }
.detail-block { border-top: 1px solid #d9e3f0; padding: 24px 0; }
.detail-block:last-child { padding-bottom: 0; }
.detail-block h3 { font-size: 16px; font-weight: 550; color: #235695; margin-bottom: 12px; }
.detail-block p { font-size: 14px; line-height: 2; color: #5e7896; }
.film-dialog { width: min(1200px,calc(100% - 40px)); padding: 0; background: #10213c; color: #fff; border: 0; }
.film-dialog video { width: 100%; max-height: 76svh; }
.film-dialog > p { font-size: 11px; color: #c0d3ec; padding: 20px 24px; }
.film-dialog .dialog-close { border-radius: 50%; background: #ffffffdf; color: #163357; }

@media (max-width:1150px) {
  .page-width { width: calc(100% - 80px); }
  .product-card { height: 505px; }
  .product-card-content { left: 23px; right: 23px; }
  .product-card h3 { font-size: 25px; }
  .card-description { font-size: 11px; }
  .product-card-content > p:first-child { font-size: 9px; }
  .deployment-panel { padding: 45px 43px 30px; }
  .deployment-layout { gap: 70px; }
}
@media (max-width:900px) {
  .page-width { width: calc(100% - 56px); }
  .site-header { height: 88px; padding-inline: 28px; }
  .site-header.scrolled { height: 73px; }
  .brand-mark { width: 36px; height: 38px; }
  .brand-name { font-size: 22px; }
  .main-nav { gap: 28px; font-size: 12px; }
  .hero { min-height: 780px; }
  .hero-copy { padding-top: 250px; }
  .hero h1 { font-size: 62px; }
  .hero-description { font-size: 14px; }
  .hero-shade { background: linear-gradient(90deg,#edf6fee8,#edf6fe80 48%,#edf6fe15),linear-gradient(0deg,#fff,transparent 28%); }
  .product-stories { padding-top: 65px; }
  .product-intro { gap: 38px; }
  .product-intro h2,.technology-intro h2 { font-size: 37px; }
  .product-intro > p,.technology-intro > p { font-size: 11px; }
  .product-gallery { gap: 14px; }
  .product-card { height: 470px; border-radius: 11px; }
  .product-card-content { left: 18px; right: 18px; bottom: 20px; }
  .product-card h3 { font-size: 22px; }
  .product-card-content > p:first-child { font-size: 8px; letter-spacing: 0; }
  .card-description { font-size: 10px; }
  .card-link { font-size: 10px; margin-top: 18px; padding-top: 12px; }
  .card-link > span { width: 28px; height: 28px; }
  .intelligence { padding-top: 55px; }
  .technology-intro { gap: 35px; }
  .technology-intro > p { padding-right: 0; }
  .engine-steps { margin-top: 38px; }
  .engine-step strong { font-size: 25px; }
  .engine-step small { font-size: 10px; }
  .engine-detail { grid-template-columns: 1fr 2.5fr; }
  #engine-state,#engine-explanation { font-size: 11px; }
  .deployment { padding-top: 40px; padding-bottom: 45px; }
  .deployment-panel { padding: 38px 34px 28px; border-radius: 19px; }
  .deployment-layout { gap: 45px; }
  .deployment h2 { font-size: 38px; }
  .deployment-intro { font-size: 11px; }
  .compatibility-list h3 { font-size: 18px; }
  .compatibility-list p { font-size: 11px; }
  .about-intro > p:last-child { width: 55%; font-size: 14px; }
}
@media (max-width:650px) {
  html { scroll-padding-top: 69px; }
  .page-width { width: calc(100% - 40px); }
  .site-header { height: 80px; padding-inline: 20px; }
  .site-header.scrolled { height: 68px; }
  .brand { gap: 9px; }
  .brand-mark { width: 32px; height: 34px; }
  .brand-name { font-size: 20px; letter-spacing: 2px; }
  .brand-name small { font-size: 7px; letter-spacing: .7px; margin-top: 6px; }
  .menu-toggle { display: flex; margin-right: -10px; }
  .menu-toggle[aria-expanded=true] span:first-child { transform: translateY(4.25px) rotate(45deg); }
  .menu-toggle[aria-expanded=true] span:last-child { transform: translateY(-4.25px) rotate(-45deg); }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; padding: 9px 23px 24px; background: #fffffff7; box-shadow: 0 20px 35px #1a457316; }
  .main-nav.open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav a { padding: 16px 0; font-size: 14px; }
  .main-nav a.active:after { display: none; }
  .hero { min-height: 720px; height: 94svh; max-height: 900px; }
  .hero-media video { object-position: 61% center; }
  .hero-shade { background: linear-gradient(180deg,#f0f7ff66 0%,#f0f7ff45 15%,#f0f7ffe0 47%,#f0f7ff75 78%,#fff 100%),linear-gradient(90deg,#f0f7ff88,#f0f7ff05); }
  .hero-copy { padding-top: clamp(215px,29svh,275px); }
  .hero-tag { font-size: 10px; letter-spacing: .8px; margin-bottom: 24px; }
  .hero-tag > span { width: 5px; height: 5px; box-shadow: 0 0 0 4px #1768ff10; }
  .hero h1 { font-size: clamp(42px,11.2vw,65px); line-height: 1.29; letter-spacing: -.8px; }
  .hero-description { font-size: 12px; line-height: 2; margin-top: 24px; }
  .hero-actions { gap: 22px; margin-top: 27px; }
  .primary-link { min-height: 49px; padding-inline: 19px; gap: 22px; font-size: 11px; }
  .primary-link svg { width: 16px; height: 16px; }
  .film-button { gap: 8px; font-size: 10px; }
  .play-icon { width: 29px; height: 29px; }
  .hero-bottom { bottom: 25px; }
  .scroll-cue { font-size: 9px; gap: 12px; }
  .scroll-line { height: 29px; }
  .motion-toggle { font-size: 9px; }
  .section-label { font-size: 10px; letter-spacing: 1px; }
  .product-stories { padding: 56px 0 38px; }
  .product-intro { display: block; margin-bottom: 28px; }
  .product-intro h2,.technology-intro h2 { font-size: 33px; line-height: 1.4; margin-top: 18px; }
  .product-intro > p { font-size: 12px; line-height: 1.9; margin-top: 23px; }
  .product-intro > p br { display: none; }
  .product-gallery { grid-template-columns: 1fr; gap: 20px; }
  .product-card { height: 470px; border-radius: 13px; }
  .product-card > img { object-position: center 41%; }
  .product-card-content { left: 26px; right: 26px; bottom: 22px; }
  .product-card h3 { font-size: 29px; }
  .product-card-content > p:first-child { font-size: 10px; margin-bottom: 11px; }
  .card-description { font-size: 12px; line-height: 1.9; }
  .card-link { font-size: 11px; margin-top: 20px; padding-top: 13px; }
  .card-link > span { width: 34px; height: 34px; }
  .product-gallery-foot { display: block; font-size: 10px; margin-top: 20px; line-height: 1.8; }
  .product-gallery-foot > span { display: block; margin-top: 7px; font-size: 8px; }
  .intelligence { padding: 50px 0 40px; }
  .technology-intro { display: block; }
  .technology-intro > p { font-size: 12px; line-height: 1.95; margin-top: 22px; }
  .engine-steps { margin-top: 35px; }
  .engine-step { padding: 0 8px 19px 0; }
  .engine-step > span { font-size: 9px; margin-bottom: 14px; }
  .engine-step strong { font-size: 25px; }
  .engine-step small { font-size: 8px; margin-top: 10px; }
  .engine-detail { display: block; padding-top: 23px; padding-bottom: 0; }
  #engine-state { font-size: 12px; }
  #engine-explanation { font-size: 11px; line-height: 2; min-height: 45px; margin-top: 10px; }
  .energy-visual { margin-top: 25px; }
  .chart-heading { gap: 12px; }
  .chart-heading > p { font-size: 9px; letter-spacing: 0; }
  .mode-switch { gap: 15px; }
  .mode-switch button { font-size: 9px; }
  .load-chart { height: 115px; margin-top: 21px; }
  .chart-foot { display: block; margin-top: 14px; }
  .chart-foot > p { font-size: 10px; }
  .chart-foot > small { display: block; font-size: 8px; margin-top: 10px; }
  .deployment { padding: 42px 0 37px; }
  .deployment-panel { padding: 34px 25px 27px; border-radius: 17px; }
  .deployment-layout { grid-template-columns: 1fr; gap: 33px; }
  .deployment h2 { font-size: 35px; line-height: 1.4; margin-top: 21px; }
  .deployment-intro { font-size: 12px; margin-top: 22px; }
  .panel-mark { width: 450px; height: 450px; left: 0; top: 10px; }
  .compatibility-list { padding-top: 0; }
  .compatibility-list article { padding-block: 21px; }
  .compatibility-list h3 { font-size: 19px; }
  .compatibility-list p { font-size: 12px; }
  .efficiency-line { margin-top: 31px; padding-top: 22px; }
  .efficiency-line > p { font-size: 15px; }
  .efficiency-line > p span { display: block; }
  .efficiency-line > small { font-size: 8px; line-height: 1.9; }
  .about { padding: 24px 0 32px; }
  .about-intro { display: block; }
  .about-intro > p:last-child { width: auto; font-size: 13px; margin-top: 18px; line-height: 2; }
  .about-intro br:first-of-type { display: none; }
  .about h2 { font-size: 24px; margin-top: 12px; }
  .site-footer { padding-block: 15px; }
  .site-footer .page-width { font-size: 8px; gap: 15px; }
  .site-footer p { display: none; }
  .site-footer .footer-contact { align-items: flex-start; flex-direction: column; gap: 18px; padding-bottom: 22px; }
  .footer-contact address { gap: 20px 32px; }
  .footer-contact address strong { font-size: 15px; }
  dialog { padding: 37px 25px 29px; width: calc(100% - 26px); max-height: 89svh; border-radius: 11px; }
  dialog h2 { font-size: 23px; padding-right: 15px; }
  dialog .section-label { font-size: 9px; margin-bottom: 21px; }
  .dialog-close { top: 6px; right: 6px; }
  .detail-intro { font-size: 12px; }
  .detail-block { padding: 22px 0; }
  .detail-block h3 { font-size: 15px; line-height: 1.6; }
  .detail-block p { font-size: 12px; }
  .film-dialog { width: calc(100% - 16px); }
  .film-dialog .dialog-close { width: 32px; height: 32px; top: 8px; right: 8px; }
  .film-dialog > p { font-size: 9px; line-height: 1.8; padding: 14px 17px; }
}
@media (max-width:360px) {
  .hero h1 { font-size: 39px; }
  .hero-actions { gap: 17px; }
  .primary-link { padding-inline: 15px; gap: 15px; }
  .film-button { font-size: 9px; }
  .product-intro h2,.technology-intro h2 { font-size: 30px; }
  .product-card-content { left: 23px; right: 23px; }
  .deployment h2 { font-size: 31px; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { animation: none!important; transition: none!important; }
  .product-card:hover > img,.primary-link:hover { transform: none; }
}

/* Budget request: the existing electric blue carries the single primary action. */
.header-actions { display: flex; align-items: center; gap: 12px; }
.budget-trigger { display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 13px 17px; background: var(--accent); color: #fff; border-radius: 5px; font-size: 12px; font-weight: 550; white-space: nowrap; }
.budget-trigger:hover, .budget-submit:hover { background: #0051e5; }
.budget-trigger svg { width: 16px; height: 16px; }
.budget-dialog { width: min(660px, calc(100% - 32px)); padding: 36px 40px; }
.budget-heading { display: flex; align-items: center; gap: 10px; color: var(--accent); font-size: 12px; margin-bottom: 16px; }
.budget-icon { display: grid; place-items: center; width: 34px; height: 34px; background: #edf4ff; border-radius: 7px; font-size: 23px; }
.budget-dialog h2 { font-size: 28px; font-weight: 600; }
.budget-intro { color: var(--secondary); font-size: 13px; line-height: 1.9; margin: 12px 0 24px; }
.budget-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 17px 18px; }
.budget-fields label { font-size: 12px; color: #314967; }
.required-mark { color: var(--accent); }
.optional { color: #8492a7; font-size: 10px; margin-left: 4px; }
.budget-fields input, .budget-fields select, .budget-fields textarea { display: block; width: 100%; border: 1px solid var(--line); border-radius: 5px; background: #fbfcfe; color: var(--foreground); font: inherit; font-size: 14px; padding: 12px; margin-top: 8px; min-height: 44px; }
.budget-fields textarea { resize: vertical; }
.budget-fields input:focus, .budget-fields select:focus, .budget-fields textarea:focus { outline: 2px solid #1768ff45; outline-offset: 1px; border-color: var(--accent); background: #fff; }
.budget-fields input::placeholder, .budget-fields textarea::placeholder { color: #8c9aaf; }
.full-field { grid-column: 1 / -1; }
.form-trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.budget-consent { display: flex; align-items: flex-start; gap: 9px; font-size: 11px; line-height: 1.8; margin-top: 19px; color: #63758e; cursor: pointer; }
.budget-consent input { accent-color: var(--accent); flex-shrink: 0; width: 16px; height: 16px; margin: 2px 0 0; }
.budget-consent small { font-size: 10px; color: #7a899d; }
.form-status { min-height: 20px; color: #ae392e; font-size: 12px; margin: 9px 0; }
.budget-submit { display: flex; width: 100%; min-height: 49px; align-items: center; justify-content: center; gap: 18px; padding: 12px; background: var(--accent); color: #fff; border-radius: 5px; font-size: 14px; }
.budget-submit svg { width: 18px; height: 18px; }
.budget-submit:disabled { opacity: .6; cursor: wait; }
.budget-success { text-align: center; padding: 35px 0 12px; }
.budget-success[hidden] { display: none; }
.success-check { display: inline-grid; place-items: center; width: 62px; height: 62px; background: #edf6f1; color: #19865b; border-radius: 50%; font-size: 32px; margin-bottom: 24px; }
.budget-success h2 { padding: 0; }
.budget-success p { color: var(--secondary); font-size: 14px; line-height: 2; margin: 15px 0; }
.budget-success small { display: block; color: #8191a7; margin-bottom: 30px; }
.privacy-note { padding: 0 24px 18px; text-align: center; font-size: 10px; color: #75869c; line-height: 1.8; }
@media (min-width: 651px) and (max-width: 1100px) { .main-nav { gap: 18px; font-size: 12px; } .brand-name { font-size: 21px; } .site-header { padding-inline: 3%; } .budget-trigger { padding-inline: 12px; } }
@media (max-width: 650px) { .budget-trigger { padding: 11px 10px; font-size: 10px; gap: 0; } .budget-trigger svg { display: none; } .header-actions { gap: 7px; } .brand-name { font-size: 17px; letter-spacing: 1px; } .brand-name small { font-size: 6px; } .brand-mark { width: 27px; } .site-header { padding-inline: 16px; } .budget-dialog { padding: 28px 23px; max-height: 91svh; } .budget-dialog h2 { font-size: 23px; } .budget-fields { gap: 14px 12px; } .budget-fields input, .budget-fields select, .budget-fields textarea { font-size: 16px; } .budget-intro { font-size: 12px; } .desktop-break { display: none; } }
@media (max-width: 380px) { .budget-fields { grid-template-columns: 1fr; } .brand { gap: 5px; } .budget-trigger { padding-inline: 7px; } .header-actions { gap: 2px; } }

.budget-optional { margin-top: 18px; }
.budget-optional summary { cursor: pointer; font-size: 12px; color: #49627f; padding-block: 5px; }
.budget-optional[open] summary { margin-bottom: 14px; }