:root {
  --navy: #061a32;
  --navy-2: #0b2f57;
  --blue: #0b67d1;
  --cyan: #39c7f4;
  --ink: #10223a;
  --muted: #5d6f85;
  --line: #dbe5ef;
  --soft: #f3f7fb;
  --white: #fff;
  --shadow: 0 20px 58px rgba(6, 38, 77, .12);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
[id] { scroll-margin-top: 94px; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; top: -80px; left: 18px; z-index: 200; padding: 10px 16px; color: #fff; background: var(--blue); border-radius: 10px; }
.skip-link:focus { top: 12px; }

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(219, 229, 239, .92);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(16px);
}
.nav-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { flex: 0 0 auto; }
.brand img { width: 164px; height: 48px; object-fit: contain; object-position: left center; }
.nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 15px; color: #40516a; font-size: 13px; font-weight: 780; white-space: nowrap; }
.nav-links a { transition: color .2s ease; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--blue); }
.nav-links a[aria-current="page"] { color: var(--blue); }
.nav-cta { padding: 9px 14px; color: #fff !important; background: var(--blue); border-radius: 12px; }
.mobile-menu { display: none; position: relative; }
.mobile-menu summary { cursor: pointer; list-style: none; padding: 9px 13px; color: #fff; background: var(--blue); border-radius: 10px; font-weight: 800; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu-panel { position: absolute; right: 0; top: 50px; width: 230px; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.mobile-menu-panel a { display: block; padding: 10px 12px; border-radius: 9px; color: #334861; font-weight: 700; }
.mobile-menu-panel a:hover { background: var(--soft); }

.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 13px; font-weight: 900; letter-spacing: .17em; text-transform: uppercase; }
.section { padding: 104px 0; }
.section-soft { background: var(--soft); }
.section-dark { color: #dce9f6; background: var(--navy); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .eyebrow { color: #6fd9ff; }
.section-dark .copy > p, .section-dark .feature-list li { color: #bdd2e5; }
.section-dark .value-card h3, .section-dark .result-card h3 { color: var(--ink); }
.section-head { margin-bottom: 44px; }
.section-title { margin: 0; font-size: clamp(32px, 4vw, 52px); line-height: 1.14; letter-spacing: -.035em; }
.section-lead { max-width: 760px; margin: 18px 0 0; color: var(--muted); font-size: 18px; }
.section-dark .section-lead { color: #a9bfd4; }

.hero { position: relative; min-height: 700px; display: grid; align-items: center; overflow: hidden; color: #fff; background: var(--navy); }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,19,39,.94), rgba(4,28,58,.78) 52%, rgba(5,31,61,.30)), url("/hero-bg.webp") center/cover no-repeat; }
.hero::after { content: ""; position: absolute; right: -160px; top: -220px; width: 560px; height: 560px; border-radius: 50%; background: radial-gradient(circle, rgba(57,199,244,.26), transparent 68%); }
.hero-content { position: relative; z-index: 1; padding: 112px 0 86px; }
.hero-kicker { margin: 0 0 18px; color: #72d8ff; font-weight: 850; letter-spacing: .17em; }
.hero h1 { max-width: 890px; margin: 0; font-size: clamp(45px, 6.2vw, 78px); line-height: 1.07; letter-spacing: -.05em; }
.hero h1 span { color: #63d3ff; }
.hero-copy { max-width: 760px; margin: 28px 0 34px; color: #d8e8f7; font-size: clamp(18px, 2vw, 22px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border: 1px solid transparent; border-radius: 14px; font-weight: 850; transition: transform .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: #0c73e6; box-shadow: 0 12px 30px rgba(0,124,255,.28); }
.btn-secondary { color: #fff; border-color: rgba(255,255,255,.36); background: rgba(255,255,255,.08); }
.hero-products { max-width: 900px; display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 58px; border-top: 1px solid rgba(255,255,255,.22); }
.hero-product { padding: 20px 28px 0 0; }
.hero-product strong { display: block; color: #fff; font-size: 22px; }
.hero-product span { display: block; color: #abc2d8; font-size: 14px; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid #dae5f1; border-radius: var(--radius); background: #fff; box-shadow: 0 10px 35px rgba(14,53,99,.06); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.product-card:hover, .product-card:focus-visible { transform: translateY(-7px); border-color: #96bde6; box-shadow: var(--shadow); outline: none; }
.product-card img, .product-card .multispectral-loop { width: 100%; height: 230px; object-fit: cover; background: #e9f0f7; }
.product-card.contain img { object-fit: cover; padding: 0; background: #e9f0f7; }
.card-body { display: flex; flex: 1; flex-direction: column; padding: 28px; }
.card-num { color: var(--blue); font-size: 13px; font-weight: 900; letter-spacing: .15em; }
.product-card h3 { margin: 12px 0 13px; font-size: 24px; line-height: 1.3; }
.product-card p { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.pill { display: inline-flex; align-items: center; padding: 6px 11px; border: 1px solid #cfdef0; border-radius: 999px; color: var(--navy-2); background: #f5f9fd; font-size: 13px; font-weight: 750; }
.card-link { margin-top: 22px; color: var(--blue); font-weight: 900; }

.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.value-card { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.value-card .index { color: var(--cyan); font-size: 13px; font-weight: 900; letter-spacing: .15em; }
.value-card h3 { margin: 9px 0 8px; font-size: 20px; }
.value-card p { margin: 0; color: var(--muted); font-size: 15px; }

.page-hero { padding: 88px 0 74px; color: #fff; background: linear-gradient(135deg, #061a32 0%, #0a3968 68%, #0a5ea6 100%); }
.breadcrumbs { margin-bottom: 26px; color: #a9c8e3; font-size: 14px; }
.breadcrumbs a:hover { color: #fff; }
.page-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.page-hero h1 { margin: 0; font-size: clamp(40px, 5.4vw, 66px); line-height: 1.08; letter-spacing: -.045em; }
.page-hero .lead { margin: 24px 0 30px; color: #d2e4f4; font-size: 20px; }
.page-hero .eyebrow { color: #72d8ff; }
.page-hero-visual { overflow: hidden; border: 1px solid rgba(255,255,255,.14); border-radius: 28px; background: #fff; box-shadow: 0 24px 70px rgba(0,0,0,.24); }
.page-hero-visual img { width: 100%; height: auto; object-fit: contain; }
.page-hero-visual.contain img { object-fit: contain; padding: 22px; }
.quick-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.quick-fact { padding: 16px; border: 1px solid rgba(255,255,255,.17); border-radius: 15px; background: rgba(255,255,255,.07); }
.quick-fact strong { display: block; font-size: 18px; }
.quick-fact span { color: #b9d0e5; font-size: 12px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.split.reverse .visual { order: 2; }
.visual { overflow: hidden; border-radius: var(--radius); background: #edf3f8; box-shadow: var(--shadow); }
.visual img, .visual video { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.visual.contain img { object-fit: contain; padding: 22px; background: #fff; }
.copy h2 { margin: 0 0 18px; font-size: clamp(32px, 4vw, 48px); line-height: 1.15; letter-spacing: -.03em; }
.copy h3 { margin: 28px 0 8px; font-size: 22px; }
.copy > p { color: var(--muted); font-size: 17px; }
.feature-list { display: grid; gap: 12px; margin: 25px 0 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 27px; color: #40516a; }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .65em; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 5px rgba(57,199,244,.14); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
.metric { padding: 18px 15px; border: 1px solid #d8e5f2; border-radius: 16px; background: #f7fbff; }
.metric strong { display: block; color: var(--blue); font-size: 21px; line-height: 1.2; }
.metric span { display: block; margin-top: 6px; color: #66778e; font-size: 12px; }
.boundary { margin-top: 22px; padding: 15px 17px; border-left: 4px solid #80a7cf; border-radius: 0 12px 12px 0; color: #607187; background: #f4f7fa; font-size: 13px; }

.answer-box { margin: 0 0 30px; padding: 22px 24px; border: 1px solid #bed5ed; border-radius: 18px; color: #24415e; background: #eef7ff; }
.answer-box strong { display: block; margin-bottom: 6px; color: var(--navy-2); font-size: 18px; }
.answer-box p { margin: 0; }
.keyword-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.keyword-row span { padding: 7px 11px; border: 1px solid #bfd5eb; border-radius: 999px; color: #214d76; background: #f4f9fe; font-size: 13px; font-weight: 760; }
.project-proof-grid { display: flex; flex-wrap: wrap; gap: 40px 64px; padding: 20px 0; }
.project-proof { flex: 0 1 320px; padding: 0; border: 0; border-radius: 0; background: transparent; }
.project-proof::before { content: none; }
.project-proof .status { display: inline-flex; margin-bottom: 16px; padding: 5px 9px; border-radius: 999px; color: #07542f; background: #e8f7ef; font-size: 12px; font-weight: 850; }
.project-proof .status.project { color: #774d00; background: #fff3d8; }
.project-proof h3 { margin: 0 0 14px; color: var(--ink); font-size: 36px; font-weight: 650; letter-spacing: 1px; line-height: 1.35; }
.project-proof p { margin: 0; color: var(--muted); font-size: 15px; font-weight: 400; line-height: 1.9; }
.project-wall-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
.application-gallery { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 30px; }
.application-case { min-width: 0; overflow: hidden; border: 1px solid #dce4ed; border-radius: 14px; background: #fff; box-shadow: 0 5px 20px rgba(16,34,58,.045); }
.application-case figure { margin: 0; }
.application-media { aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center; background: #e9edf0; overflow: hidden; }
.application-media img { width: 100%; height: 100%; object-fit: cover; }
.application-media .case-installation { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.application-media video { width: 100%; height: 100%; object-fit: cover; object-position: center 35%; background: #14212b; }
.application-media video:fullscreen { object-fit: contain; }
.application-case figcaption { margin: 12px 22px 0; font-size: 13px; color: var(--muted); }
.application-copy { padding: 18px 22px 24px; }
.application-copy h3 { margin: 0 0 10px; font-size: 21px; }
.application-copy p { color: var(--muted); font-size: 15px; }
.application-copy .application-client { color: var(--ink); }
.application-copy a, .functional-grid a { color: var(--blue); font-size: 14px; }
.application-gallery-detail { grid-template-columns: 1fr; }
.application-case-detail { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 36px; align-items: center; padding: 24px; }
.application-case-detail .application-media { border-radius: 8px; }
.application-case-detail figcaption { margin: 12px 0 0; }
.application-case-detail .application-media { aspect-ratio: 16 / 10; }
.application-case-detail .application-copy { padding: 0; max-width: 440px; }
.functional-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; }
.functional-grid h3 { font-size: 20px; margin: 0 0 12px; }
.functional-grid p { color: var(--muted); font-size: 16px; }
@media(max-width: 900px) {
  .application-gallery, .application-case-detail, .functional-grid { grid-template-columns: 1fr; }
  .application-gallery { gap: 38px; }
  .application-case-detail { gap: 20px; padding: 18px; }
  .application-media, .application-case-detail .application-media { aspect-ratio: 16 / 10; }
}
.project-proof p span { margin-left: 6px; color: #777b78; font-size: 13px; font-weight: 400; }
.evidence-line { display: flex; gap: 14px; align-items: flex-start; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); color: #4a6078; font-size: 14px; }
.evidence-line b { flex: 0 0 auto; color: var(--blue); }
.mosaic { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
.mosaic-stack { display: grid; gap: 18px; }
.mosaic .media-card img { aspect-ratio: 16/9; }
.mosaic > .media-card img { height: 100%; min-height: 520px; object-fit: cover; }
.media-card.screen img { object-fit: cover; object-position: center; background: #fff; }
.media-card.gif img, .media-card.gif .multispectral-loop { width: 100%; aspect-ratio: 4/3; object-fit: cover; image-rendering: auto; }
.media-note { margin-top: 16px; color: var(--muted); font-size: 14px; }
.proof-banner { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; padding: 32px; border: 1px solid #b9d6ef; border-radius: 24px; background: linear-gradient(135deg, #edf7ff, #fff); }
.proof-banner h3 { margin: 0 0 9px; font-size: 26px; }
.proof-banner p { margin: 0; color: var(--muted); }
.proof-stat { min-width: 220px; padding: 22px; border-radius: 18px; color: #fff; background: var(--navy-2); }
.proof-stat strong { display: block; font-size: 28px; }
.proof-stat span { color: #bcd4ea; font-size: 13px; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.check-item { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.check-item strong { display: block; margin-bottom: 6px; }
.check-item p { margin: 0; color: var(--muted); font-size: 14px; }

.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; counter-reset: process; }
.process-four { grid-template-columns: repeat(4, 1fr); }
.process-step { position: relative; padding: 24px 18px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.process-step::before { counter-increment: process; content: "0" counter(process); display: block; margin-bottom: 18px; color: var(--blue); font-size: 13px; font-weight: 900; letter-spacing: .13em; }
.process-step strong { display: block; margin-bottom: 7px; font-size: 18px; }
.process-step span { color: var(--muted); font-size: 14px; }

.result-grid, .scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.result-card, .scenario-card { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.result-card h3, .scenario-card h3 { margin: 0 0 9px; font-size: 20px; }
.result-card p, .scenario-card p { margin: 0; color: var(--muted); }

.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.gallery.three { grid-template-columns: repeat(3, 1fr); }
.media-card { overflow: hidden; margin: 0; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.media-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.media-card figcaption { padding: 13px 16px; color: #51627a; font-size: 14px; font-weight: 750; }
.video-frame { overflow: hidden; border-radius: 22px; background: #07182d; box-shadow: var(--shadow); }
.video-frame video { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.comparison-column { display: grid; gap: 14px; }
.comparison-label { padding: 11px 15px; border-radius: 12px; color: #52637b; background: #eaf0f6; text-align: center; font-weight: 900; }
.comparison-column.highlight .comparison-label { color: #fff; background: var(--blue); }

.data-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; }
.data-table { width: 100%; border-collapse: collapse; background: #fff; }
.data-table th, .data-table td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.data-table th { color: #fff; background: var(--navy-2); font-size: 14px; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table td:first-child { width: 27%; font-weight: 800; }

.faq { display: grid; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.faq summary { cursor: pointer; padding: 18px 20px; font-weight: 850; }
.faq p { margin: 0; padding: 0 20px 20px; color: var(--muted); }

.article { font-size: 17px; }
.article h2 { margin: 54px 0 15px; font-size: 32px; line-height: 1.25; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 30px 0 8px; font-size: 22px; }
.article p, .article li { color: #44566d; }
.article ul, .article ol { padding-left: 1.4em; }
.article .callout { margin: 28px 0; padding: 22px 24px; border-left: 4px solid var(--blue); border-radius: 0 16px 16px 0; color: #31475f; background: #eef6ff; }

.cta { padding: 76px 0; color: #fff; background: linear-gradient(135deg, #071a32, #0a5398); }
.cta-box { display: grid; grid-template-columns: 1fr auto; gap: 34px; align-items: center; }
.cta h2 { margin: 0 0 10px; font-size: clamp(30px, 4vw, 46px); }
.cta p { margin: 0; color: #bdd2e5; }
.contact-card { display: grid; grid-template-columns: 1fr auto; gap: 38px; align-items: center; padding: 42px; border: 1px solid var(--line); border-radius: 28px; background: #fff; box-shadow: var(--shadow); }
.contact-card h2 { margin: 0 0 10px; font-size: 36px; }
.contact-card p { margin: 6px 0; color: var(--muted); }
.contact-card strong { color: var(--ink); }
.qr { text-align: center; }
.qr img { width: 138px; height: 138px; object-fit: cover; border-radius: 14px; }
.qr span { display: block; margin-top: 7px; color: #6b7c92; font-size: 12px; font-weight: 750; }

.footer { padding: 40px 0 30px; color: #8fa3b8; background: #061326; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 34px; padding-bottom: 28px; }
.footer h3 { margin: 0 0 12px; color: #fff; font-size: 16px; }
.footer p { margin: 5px 0; }
.footer a { color: #b8cada; }
.footer a:hover { color: #fff; }
.footer-bottom { padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); }

@media (max-width: 980px) {
  .nav-links { display: none; }
  .mobile-menu { display: block; }
  .hero { min-height: 650px; }
  .card-grid { grid-template-columns: 1fr; }
  .product-card { display: grid; grid-template-columns: .85fr 1.15fr; }
  .product-card img, .product-card .multispectral-loop { height: 100%; min-height: 300px; }
  .page-hero-grid, .split { grid-template-columns: 1fr; }
  .split.reverse .visual { order: 0; }
  .page-hero-visual { max-width: 760px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-grid, .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery.three { grid-template-columns: repeat(2, 1fr); }
  .project-proof-grid { gap: 32px; padding: 8px 0; }
  .project-proof { flex-basis: 300px; max-width: 100%; padding: 0; }
  .project-proof h3 { font-size: 30px; margin-bottom: 8px; }
  .mosaic { grid-template-columns: 1fr; }
  .mosaic > .media-card img { min-height: 0; }
}

@media (max-width: 640px) {
  .container, .narrow { width: min(100% - 28px, 1180px); }
  .nav-inner { height: 68px; }
  .brand img { width: 144px; height: 42px; }
  .hero { min-height: auto; }
  .hero-content { padding: 88px 0 62px; }
  .hero h1 { font-size: 34px; line-height: 1.2; }
  .hero-copy, .page-hero .lead { font-size: 17px; }
  .hero-products { grid-template-columns: 1fr; margin-top: 40px; }
  .hero-product { padding-top: 13px; }
  .section { padding: 74px 0; }
  .page-hero { padding: 54px 0 58px; }
  .page-hero-grid { gap: 34px; }
  .product-card { display: flex; }
  .product-card img, .product-card .multispectral-loop { height: 210px; min-height: 0; }
  .card-body { padding: 23px; }
  .value-grid, .result-grid, .scenario-grid, .gallery, .gallery.three, .comparison, .quick-facts, .check-grid { grid-template-columns: 1fr; }
  .quick-facts { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .quick-fact { padding: 14px 10px; }
  .quick-fact strong { font-size: 15px; }
  .process { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .metric strong { font-size: 19px; }
  .data-table th, .data-table td { padding: 13px 14px; }
  .cta-box, .contact-card, .footer-grid { grid-template-columns: 1fr; }
  .cta-box .btn { justify-self: start; }
  .contact-card { padding: 29px 23px; text-align: center; }
  .qr { justify-self: center; }
  .proof-banner { grid-template-columns: 1fr; padding: 24px; }
  .proof-stat { min-width: 0; }
}