:root {
  --ink: #071426;
  --ink-2: #0c2038;
  --blue: #1570ef;
  --cyan: #3ad5e6;
  --paper: #f5f8fb;
  --white: #ffffff;
  --muted: #617084;
  --line: #dce4ec;
  --radius: 12px;
  --shadow: 0 18px 50px rgba(7, 20, 38, 0.12);
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; transform: translateY(-160%); padding: 10px 16px; background: var(--white); color: var(--ink); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; z-index: 40; inset: 0 0 auto; height: 76px; border-bottom: 1px solid transparent; transition: background .2s ease, box-shadow .2s ease, border-color .2s ease; }
.site-header.is-scrolled { background: rgba(255,255,255,.92); box-shadow: 0 10px 30px rgba(4,13,24,.06); border-bottom-color: var(--line); backdrop-filter: blur(8px); }
.inner-page .site-header, .inner-page .site-header.is-scrolled { background: rgba(7,20,38,.96); box-shadow: 0 10px 30px rgba(4,13,24,.18); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand img { width: 180px; height: auto; }
body:not(.inner-page) .brand img { filter: brightness(0); }
.primary-nav { display: flex; align-items: center; gap: 34px; color: rgba(7,20,38,.82); font-size: 15px; }
.inner-page .primary-nav { color: rgba(255,255,255,.84); }
.primary-nav a { position: relative; padding: 12px 0; transition: color .2s ease; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--blue); }
.inner-page .primary-nav a:hover, .inner-page .primary-nav a:focus-visible { color: var(--white); }
.primary-nav a:not(.nav-contact)::after { content: ""; position: absolute; left: 0; bottom: 5px; width: 100%; height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: right; transition: transform .2s ease; }
.primary-nav a:hover::after, .primary-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.primary-nav .nav-contact { padding: 10px 18px; border: 1px solid rgba(7,20,38,.22); border-radius: 6px; }
.primary-nav .nav-contact:hover { border-color: var(--blue); color: var(--blue); }
.inner-page .primary-nav .nav-contact { border-color: rgba(255,255,255,.45); }
.inner-page .primary-nav .nav-contact:hover { border-color: var(--cyan); color: var(--white); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 9px; }
.nav-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--ink); }
.inner-page .nav-toggle > span:not(.sr-only) { background: var(--white); }

.hero { position: relative; min-height: 760px; display: grid; align-items: center; overflow: hidden; color: var(--ink); background: linear-gradient(180deg, #f5f8fb 0%, #e7f0fb 100%); }
.hero::after { content: ""; position: absolute; inset: auto -10% -52% 26%; height: 680px; border: 1px solid rgba(21,112,239,.14); border-radius: 50%; box-shadow: 0 0 0 90px rgba(21,112,239,.035), 0 0 0 180px rgba(21,112,239,.02); }
.hero-grid { position: absolute; inset: 0; opacity: .55; background-image: linear-gradient(rgba(21,112,239,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(21,112,239,.07) 1px, transparent 1px); background-size: 58px 58px; mask-image: linear-gradient(to right, #000 0%, transparent 74%); }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: 80px; padding-top: 76px; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 13px; line-height: 1.4; font-weight: 700; letter-spacing: .18em; }
.hero .eyebrow { color: var(--blue); }
.hero h1 { margin: 0; font-size: clamp(52px, 6vw, 82px); line-height: 1.08; letter-spacing: -.035em; font-weight: 760; }
.hero h1 span { color: var(--blue); }
.hero-lead { max-width: 650px; margin: 28px 0 0; color: var(--muted); font-size: 19px; line-height: 1.85; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid transparent; border-radius: 7px; font-weight: 650; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--blue); }
.button-primary:hover { background: #0b62db; }
.button-secondary { color: var(--ink); border-color: rgba(7,20,38,.26); }
.button-secondary:hover { border-color: var(--blue); color: var(--blue); }
.button-light { color: var(--ink); background: var(--white); }

.hero-console { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--white); box-shadow: 0 30px 80px rgba(7,20,38,.10); }
.console-top { height: 50px; display: flex; align-items: center; gap: 7px; padding: 0 17px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 10px; letter-spacing: .16em; }
.console-top span { width: 7px; height: 7px; border-radius: 50%; background: #c8d4e2; }
.console-top strong { margin-left: auto; font-weight: 600; }
.console-body { position: relative; height: 380px; background-image: linear-gradient(rgba(21,112,239,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(21,112,239,.05) 1px, transparent 1px); background-size: 34px 34px; }
.console-body::before, .console-body::after { content: ""; position: absolute; left: 50%; top: 50%; width: 250px; height: 1px; background: rgba(21,112,239,.2); transform-origin: left; }
.console-body::before { transform: rotate(35deg); }
.console-body::after { transform: rotate(145deg); }
.console-core, .console-node { position: absolute; z-index: 2; display: grid; place-content: center; text-align: center; border-radius: 50%; }
.console-core { inset: 50% auto auto 50%; width: 134px; height: 134px; transform: translate(-50%,-50%); border: 1px solid var(--blue); background: rgba(21,112,239,.08); box-shadow: 0 0 50px rgba(21,112,239,.12); }
.console-core b { font-size: 38px; letter-spacing: .06em; color: var(--blue); }
.console-core span, .console-node span { margin-top: 5px; color: var(--muted); font-size: 11px; }
.console-node { width: 88px; height: 88px; border: 1px solid #c8d9ef; background: var(--white); }
.console-node b { color: var(--blue); font-size: 13px; letter-spacing: .08em; }
.node-data { left: 8%; top: 16%; }.node-arch { right: 8%; top: 16%; }.node-action { left: calc(50% - 44px); bottom: 7%; }
.console-status { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); }
.console-status span { padding: 15px 8px; color: var(--muted); font-size: 11px; text-align: center; letter-spacing: .08em; }
.console-status span + span { border-left: 1px solid var(--line); }

.section { padding: 112px 0; }
.section-heading { display: grid; grid-template-columns: 1.05fr .95fr; gap: 90px; align-items: end; margin-bottom: 50px; }
.section-heading h2, .capabilities-intro h2, .about-copy h2, .contact-band h2 { margin: 0; font-size: clamp(34px, 4vw, 52px); line-height: 1.2; letter-spacing: -.025em; }
.section-heading > p, .capabilities-intro > p, .about-copy > p, .contact-band p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.85; }

.services { background: var(--paper); }
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.service-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); transition: transform .25s ease, box-shadow .25s ease; }
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-card > img { width: 100%; aspect-ratio: 1.32; object-fit: cover; }
.service-content { padding: 28px 28px 32px; }
.service-content > span { color: var(--blue); font-size: 12px; font-weight: 750; letter-spacing: .15em; }
.service-content h3 { margin: 12px 0 14px; font-size: 25px; }
.service-content p { min-height: 78px; margin: 0; color: var(--muted); line-height: 1.75; }
.service-content ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.service-content li { padding: 7px 10px; border: 1px solid #d8e5f1; border-radius: 5px; color: #40536a; background: #f8fbfe; font-size: 12px; }

.capabilities { color: var(--ink); background: #eaf1f9; }
.capabilities-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 90px; }
.capabilities-intro { position: sticky; top: 130px; align-self: start; }
.capabilities-intro > p { margin-top: 24px; color: var(--muted); }
.capability-metric { display: flex; align-items: center; gap: 16px; margin-top: 42px; padding-top: 28px; border-top: 1px solid var(--line); }
.capability-metric strong { color: var(--blue); font-size: 56px; line-height: 1; }
.capability-metric span { color: var(--muted); }
.capability-list { border-top: 1px solid var(--line); }
.capability-list article { display: grid; grid-template-columns: 64px 1fr; gap: 20px; padding: 28px 4px; border-bottom: 1px solid var(--line); }
.capability-list article > span { color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.capability-list h3 { margin: 0 0 8px; font-size: 21px; }
.capability-list p { margin: 0; color: var(--muted); line-height: 1.7; }

.method-list { display: grid; grid-template-columns: repeat(4,1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); list-style: none; }
.method-list li { min-height: 260px; padding: 34px 28px; }
.method-list li + li { border-left: 1px solid var(--line); }
.method-list span { color: var(--blue); font-size: 12px; font-weight: 750; letter-spacing: .15em; }
.method-list h3 { margin: 62px 0 14px; font-size: 22px; }
.method-list p { margin: 0; color: var(--muted); line-height: 1.75; }

.products { background: var(--paper); }
.product-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.product-grid article { overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: var(--white); transition: transform .25s ease, box-shadow .25s ease; }
.product-grid article:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.product-logo { height: 140px; display: grid; place-items: center; background: linear-gradient(135deg, #f7f9fc, #eaf1f9); }
.product-icon { width: 72px; height: 72px; border-radius: 18px; display: grid; place-items: center; color: #fff; }
.product-icon svg { width: 38px; height: 38px; }
.product-grid h3 { margin: 0; padding: 22px 26px 0; font-size: 20px; }
.product-grid p { margin: 0; padding: 8px 26px 28px; color: var(--muted); line-height: 1.65; }

.about-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 90px; align-items: center; }
.about-visual { position: relative; min-height: 490px; overflow: hidden; display: grid; align-content: end; padding: 38px; color: var(--white); background: var(--ink-2); }
.about-visual::before { content: ""; position: absolute; width: 350px; height: 350px; right: -90px; top: -80px; border: 1px solid rgba(58,213,230,.4); border-radius: 50%; box-shadow: 0 0 0 65px rgba(58,213,230,.04), 0 0 0 130px rgba(58,213,230,.03); }
.about-mark { position: absolute; top: 46px; left: 44px; color: var(--cyan); font-size: 180px; line-height: 1; font-weight: 800; letter-spacing: -.08em; }
.about-visual p { position: relative; margin: 0; color: rgba(255,255,255,.62); font-size: 14px; line-height: 1.6; letter-spacing: .2em; }
.about-copy > p { margin-top: 24px; }
.values { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 40px; }
.values div { padding-top: 18px; border-top: 2px solid var(--blue); }
.values strong, .values span { display: block; }
.values strong { font-size: 18px; }
.values span { margin-top: 7px; color: var(--muted); font-size: 13px; line-height: 1.6; }

.contact-band { padding: 82px 0; color: var(--white); background: var(--blue); }
.contact-band .eyebrow { color: rgba(255,255,255,.72); }
.contact-band-inner { display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; }
.contact-band p { max-width: 760px; margin-top: 18px; color: rgba(255,255,255,.72); }

.site-footer { color: var(--white); background: #04101e; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .65fr .85fr; gap: 80px; padding: 72px 0 58px; }
.footer-brand img { width: 190px; }
.footer-brand p { max-width: 410px; margin: 24px 0 0; color: rgba(255,255,255,.48); line-height: 1.8; }
.footer-links h2, .footer-contact h2 { margin: 0 0 22px; font-size: 15px; letter-spacing: .08em; }
.footer-links a { display: block; margin: 12px 0; color: rgba(255,255,255,.58); }
.footer-links a:hover { color: var(--cyan); }
.footer-contact > a { color: var(--cyan); font-size: 20px; font-weight: 700; }
.footer-contact p { margin: 16px 0 0; color: rgba(255,255,255,.48); line-height: 1.8; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding: 22px 0 28px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.36); font-size: 13px; }

.inner-main { min-height: 66vh; padding-top: 76px; }
.inner-hero { padding: 90px 0 72px; color: var(--white); background: var(--ink); }
.inner-hero h1, .article-detail h1 { margin: 0; font-size: clamp(38px,5vw,62px); line-height: 1.18; }
.inner-hero > .shell > p:last-child { max-width: 720px; color: rgba(255,255,255,.6); line-height: 1.8; }
.article-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.article-card { padding: 28px; border: 1px solid var(--line); border-radius: 10px; }
.article-card > p { color: var(--blue); font-size: 12px; }
.article-card h2 { font-size: 22px; line-height: 1.45; }
.article-card > div { color: var(--muted); line-height: 1.75; }
.text-link { display: inline-block; margin-top: 22px; color: var(--blue); font-weight: 650; }
.empty-state { grid-column: 1/-1; padding: 70px 20px; text-align: center; background: var(--paper); }
.empty-state p { color: var(--muted); }
.article-detail { max-width: 840px; padding-top: 90px; padding-bottom: 110px; }
.article-meta { margin-top: 18px; color: var(--muted); }
.article-cover { width: 100%; margin-top: 36px; }
.article-body { margin-top: 42px; font-size: 17px; line-height: 1.95; }
.article-body img { height: auto; margin: 30px auto; }
.article-body a { color: var(--blue); text-decoration: underline; }
.not-found { min-height: 72vh; display: grid; place-content: center; justify-items: center; text-align: center; padding-top: 76px; }
.error-code { margin: 0; color: var(--blue); font-size: clamp(90px,16vw,180px); line-height: 1; font-weight: 800; letter-spacing: -.08em; }
.not-found h1 { margin: 18px 0 0; font-size: 34px; }.not-found > p:not(.error-code) { color: var(--muted); }.not-found .button { margin-top: 20px; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .hero { min-height: auto; padding: 150px 0 90px; }
  .hero-inner, .section-heading, .capabilities-layout, .about-grid, .contact-band-inner { grid-template-columns: 1fr; }
  .hero-inner { gap: 58px; padding-top: 0; }
  .section-heading { gap: 20px; }
  .capabilities-intro { position: static; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { display: grid; grid-template-columns: .8fr 1.2fr; }
  .service-card > img { height: 100%; aspect-ratio: auto; }
  .method-list { grid-template-columns: repeat(2,1fr); }
  .method-list li:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .method-list li:nth-child(4) { border-top: 1px solid var(--line); }
  .product-grid { grid-template-columns: repeat(2,1fr); }
  .about-grid { gap: 50px; }.about-visual { min-height: 390px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }.footer-brand { grid-column: 1/-1; }
  .article-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 700px) {
  :root { --shell: calc(100% - 30px); }
  .site-header { height: 68px; }.brand img { width: 154px; }
  .nav-toggle { display: block; }
  .primary-nav { position: fixed; inset: 68px 0 auto; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 18px 22px 28px; background: #061323; box-shadow: 0 18px 30px rgba(0,0,0,.2); color: rgba(255,255,255,.84); }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: 16px 4px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .primary-nav a:hover, .primary-nav a:focus-visible { color: var(--white); }
  .primary-nav .nav-contact { margin-top: 14px; text-align: center; border-color: rgba(255,255,255,.45); }
  .hero { padding: 124px 0 74px; }.hero h1 { font-size: 46px; }.hero-lead { font-size: 17px; }
  .hero-actions { flex-direction: column; align-items: stretch; }.hero-console { display: none; }
  .section { padding: 78px 0; }.section-heading { margin-bottom: 34px; }
  .service-card { display: block; }.service-card > img { aspect-ratio: 1.45; }
  .service-content p { min-height: auto; }
  .capabilities-layout { gap: 48px; }.capability-list article { grid-template-columns: 42px 1fr; }
  .method-list, .product-grid, .values, .footer-grid, .article-grid { grid-template-columns: 1fr; }
  .method-list li { min-height: auto; }.method-list li + li { border-left: 0; border-top: 1px solid var(--line); }.method-list h3 { margin-top: 36px; }
  .values { gap: 22px; }.contact-band-inner { gap: 34px; }.contact-band .button { width: 100%; }
  .footer-grid { gap: 40px; padding-top: 58px; }.footer-brand { grid-column: auto; }.footer-bottom { flex-direction: column; gap: 8px; }
  .inner-main { padding-top: 68px; }.inner-hero { padding: 66px 0 54px; }.article-detail { padding-top: 64px; padding-bottom: 80px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}