:root {
  --ink: #07111f;
  --ink-2: #0d1b2c;
  --paper: #f4f5f2;
  --white: #ffffff;
  --muted: #6d7886;
  --line: #dce1e4;
  --orange: #ff6b2c;
  --orange-2: #ff8a42;
  --cyan: #3ed7c5;
  --shell: min(1180px, calc(100vw - 48px));
  --ease: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; background: #fff; padding: 12px 18px; border-radius: 4px; transition: top .2s; }
.skip-link:focus { top: 16px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 50; color: #fff; background: rgba(7,17,31,.84); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,.12); transition: background .3s, color .3s, box-shadow .3s; }
.site-header.scrolled { color: #fff; background: rgba(7,17,31,.95); backdrop-filter: blur(18px); box-shadow: 0 8px 30px rgba(7,17,31,.18); border-color: rgba(255,255,255,.1); }
.header-inner { height: 78px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -.04em; }
.brand-logo { display: block; width: auto; height: 42px; object-fit: contain; }
.brand-mark { width: 34px; height: 34px; position: relative; display: inline-block; transform: skewX(-12deg); }
.brand-mark i { position: absolute; display: block; background: var(--orange); border-radius: 1px; }
.brand-mark i:nth-child(1) { width: 8px; height: 28px; left: 3px; top: 3px; }
.brand-mark i:nth-child(2) { width: 8px; height: 20px; left: 13px; top: 11px; }
.brand-mark i:nth-child(3) { width: 8px; height: 12px; left: 23px; top: 19px; background: var(--cyan); }
.brand-name { font-size: 21px; }
.brand-name span { color: var(--orange); }
.main-nav { display: flex; align-items: center; gap: 34px; font-size: 14px; font-weight: 600; }
.main-nav > a:not(.nav-cta) { opacity: .78; transition: opacity .2s; }
.main-nav > a:hover { opacity: 1; }
.nav-cta { padding: 12px 18px; border: 1px solid currentColor; display: inline-flex; gap: 16px; align-items: center; }
.menu-toggle { display: none; color: currentColor; width: 44px; height: 44px; border: 0; background: transparent; padding: 10px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: currentColor; margin: 6px 0; transition: transform .25s; }

.hero { min-height: 820px; background: var(--ink); color: #fff; position: relative; overflow: hidden; padding: 154px 0 52px; display: flex; flex-direction: column; }
.hero-grid { position: absolute; inset: 0; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 90%); }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .18; }
.orb-one { width: 500px; height: 500px; background: var(--orange); right: -180px; top: -120px; }
.orb-two { width: 420px; height: 420px; background: var(--cyan); left: 38%; bottom: -300px; }
.hero-layout { position: relative; z-index: 2; flex: 1; display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 70px; }
.eyebrow { margin: 0 0 24px; display: flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 800; letter-spacing: .18em; color: rgba(255,255,255,.58); }
.eyebrow span { width: 28px; height: 2px; background: var(--orange); }
.eyebrow.dark { color: #7b8490; }
.eyebrow.light { color: rgba(255,255,255,.55); }
.hero h1 { margin: 0; font-size: clamp(54px, 5.2vw, 78px); line-height: 1.12; letter-spacing: -.055em; font-weight: 800; }
.hero h1 span { color: var(--orange); }
.hero-lead { max-width: 540px; margin: 30px 0 36px; color: rgba(255,255,255,.67); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { border: 0; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 24px; padding: 16px 22px; font-size: 14px; font-weight: 700; transition: transform .25s var(--ease), background .25s, color .25s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--orange); color: #fff; }
.button-primary:hover { background: var(--orange-2); }
.button-ghost { border: 1px solid rgba(255,255,255,.3); color: #fff; }
.button-ghost:hover { background: rgba(255,255,255,.08); }
.button-light { width: 100%; background: #fff; color: var(--ink); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 42px; color: rgba(255,255,255,.45); font-size: 12px; }
.hero-tags span { display: flex; align-items: center; gap: 16px; }
.hero-tags span:not(:last-child)::after { content: "/"; color: var(--orange); }

.visual-frame { border: 1px solid rgba(255,255,255,.18); background: rgba(7,17,31,.76); box-shadow: 0 36px 90px rgba(0,0,0,.38); backdrop-filter: blur(10px); transform: perspective(1100px) rotateY(-5deg) rotateX(2deg); }
.visual-topbar { height: 42px; display: flex; align-items: center; gap: 7px; padding: 0 14px; border-bottom: 1px solid rgba(255,255,255,.1); }
.visual-topbar > span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.22); }
.visual-topbar > span:first-child { background: var(--orange); }
.visual-topbar em { margin-left: auto; font: normal 9px/1 ui-monospace, monospace; letter-spacing: .15em; color: var(--cyan); }
.visual-canvas { position: relative; aspect-ratio: 1.24; overflow: hidden; background-image: radial-gradient(circle at center, rgba(62,215,197,.1), transparent 38%), linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: auto, 38px 38px, 38px 38px; }
.core-node { position: absolute; inset: 50% auto auto 50%; width: 124px; height: 124px; transform: translate(-50%,-50%); border: 1px solid rgba(62,215,197,.75); border-radius: 50%; display: grid; place-content: center; text-align: center; box-shadow: 0 0 0 15px rgba(62,215,197,.05), 0 0 60px rgba(62,215,197,.16); }
.core-node::after { content: ""; position: absolute; inset: 9px; border: 1px dashed rgba(255,255,255,.18); border-radius: 50%; animation: spin 14s linear infinite; }
.core-node b { font-size: 30px; letter-spacing: -.05em; }
.core-node small { font: 8px/1.4 ui-monospace, monospace; color: var(--cyan); letter-spacing: .11em; }
.satellite { position: absolute; width: 124px; padding: 12px; border: 1px solid rgba(255,255,255,.15); background: rgba(13,27,44,.92); display: grid; gap: 4px; }
.satellite i { font: normal 9px ui-monospace, monospace; color: var(--orange); }
.satellite b { font: 700 11px ui-monospace, monospace; letter-spacing: .1em; }
.satellite span { font: 8px ui-monospace, monospace; color: rgba(255,255,255,.42); }
.sat-1 { left: 8%; top: 12%; }.sat-2 { right: 8%; top: 12%; }.sat-3 { left: 8%; bottom: 10%; }.sat-4 { right: 8%; bottom: 10%; }
.signal-line { position: absolute; left: 50%; top: 50%; height: 1px; width: 40%; background: linear-gradient(90deg, transparent, rgba(62,215,197,.6), transparent); transform-origin: left center; }
.signal-a { transform: rotate(34deg); }.signal-b { transform: rotate(146deg); }.signal-c { transform: rotate(-34deg); }
.status-chip { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); font: 9px ui-monospace, monospace; color: rgba(255,255,255,.6); }
.status-chip span { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 9px var(--cyan); margin-right: 7px; }
.axis-label { position: absolute; font: 8px ui-monospace, monospace; color: rgba(255,255,255,.23); letter-spacing: .16em; }
.axis-x { left: 18px; bottom: 8px; }.axis-y { transform: rotate(-90deg); transform-origin: left top; left: 8px; bottom: 14px; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-footer { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; color: rgba(255,255,255,.42); font-size: 11px; letter-spacing: .13em; text-transform: uppercase; }
.hero-footer a { display: flex; gap: 12px; align-items: center; }
.hero-footer a span { color: var(--orange); }

.section { padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1fr 1.08fr; gap: 60px; align-items: end; margin-bottom: 58px; }
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: -22px; }
.section-heading h2, .applications h2, .process h2, .about h2, .contact h2 { margin: 0; font-size: clamp(38px, 4vw, 58px); line-height: 1.18; letter-spacing: -.05em; }
.section-heading h2 span { color: var(--orange); }
.section-heading > p:last-child { margin: 0; color: var(--muted); line-height: 1.85; max-width: 520px; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability-card { min-height: 610px; padding: 30px 26px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.45); position: relative; display: flex; flex-direction: column; transition: transform .35s var(--ease), background .35s, box-shadow .35s; }
.capability-card:hover { transform: translateY(-8px); background: #fff; box-shadow: 0 24px 50px rgba(7,17,31,.08); z-index: 2; }
.card-number { font: 10px ui-monospace, monospace; color: #98a0aa; }
.product-brand { position: absolute; right: 26px; top: 28px; color: #07549b; font: 800 11px/1 ui-monospace, monospace; letter-spacing: .08em; }
.product-image { width: 100%; height: 190px; margin: 28px 0 26px; position: relative; display: grid; place-items: center; overflow: hidden; background: linear-gradient(145deg, #f8f9f7, #eef1f1); border: 1px solid #e4e7e7; }
.product-image::after { content: ""; position: absolute; inset: auto 0 0; height: 44%; background: linear-gradient(to top, rgba(7,17,31,.035), transparent); pointer-events: none; }
.product-image img { display: block; width: 100%; height: 100%; object-fit: contain; position: relative; z-index: 1; transition: transform .45s var(--ease); }
.capability-card:hover .product-image img { transform: scale(1.035); }
.product-controller img { padding: 12px 26px 5px; }
.product-servo img { width: 112%; max-width: none; }
.product-inverter img { padding: 15px 4px 2px; }
.product-robot img { padding: 8px 12px 0; }
.capability-card h3 { font-size: 22px; margin: 0 0 16px; }
.capability-card > p { color: var(--muted); line-height: 1.75; font-size: 14px; min-height: 98px; }
.capability-card ul { list-style: none; padding: 18px 0 0; margin: 22px 0 0; border-top: 1px solid var(--line); display: flex; gap: 10px; flex-wrap: wrap; }
.capability-card li { font-size: 11px; color: #65707d; background: #eceeec; padding: 6px 9px; }
.product-source { margin-top: auto; padding-top: 20px; display: flex; align-items: center; justify-content: space-between; color: #07549b; font-size: 12px; font-weight: 700; border-top: 1px solid var(--line); }
.product-source span { color: var(--orange); font-size: 16px; }

.applications { color: #fff; background: var(--ink-2); position: relative; overflow: hidden; }
.applications::before { content: "LYO"; position: absolute; right: -30px; top: -130px; font-size: 430px; font-weight: 900; letter-spacing: -.1em; color: rgba(255,255,255,.018); }
.applications-top { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; padding-bottom: 64px; border-bottom: 1px solid rgba(255,255,255,.14); }
.applications-top > p { color: rgba(255,255,255,.52); line-height: 1.8; }
.application-row { position: relative; display: grid; grid-template-columns: 80px 1fr 1.2fr 42px; gap: 30px; align-items: center; min-height: 116px; border-bottom: 1px solid rgba(255,255,255,.13); transition: padding .3s var(--ease), background .3s; }
.application-row::before { content: ""; position: absolute; inset: 0 calc(50% - 50vw); background: var(--orange); transform: scaleY(0); transform-origin: bottom; transition: transform .35s var(--ease); z-index: 0; }
.application-row:hover::before { transform: scaleY(1); }
.application-row > * { position: relative; z-index: 1; }
.app-index { font: 11px ui-monospace, monospace; color: var(--orange); }
.application-row:hover .app-index { color: #fff; }
.application-row h3 { font-size: 24px; margin: 0; }
.application-row p { margin: 0; color: rgba(255,255,255,.5); font-size: 14px; }
.application-row:hover p { color: rgba(255,255,255,.8); }
.app-arrow { font-size: 24px; text-align: right; }

.process-layout { display: grid; grid-template-columns: .86fr 1.14fr; gap: 100px; }
.process-sticky { position: sticky; top: 130px; align-self: start; }
.process-sticky > p:not(.eyebrow) { color: var(--muted); line-height: 1.85; margin: 28px 0; max-width: 430px; }
.text-link { display: inline-flex; gap: 34px; color: var(--orange); font-weight: 700; font-size: 14px; padding-bottom: 8px; border-bottom: 1px solid currentColor; }
.process-steps { margin: 0; padding: 0; list-style: none; }
.process-steps li { display: grid; grid-template-columns: 76px 1fr; gap: 26px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.process-steps li:first-child { border-top: 1px solid var(--line); }
.process-steps li > span { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: #fff; font: 11px ui-monospace, monospace; }
.process-steps h3 { margin: 4px 0 12px; font-size: 24px; }
.process-steps p { margin: 0; color: var(--muted); line-height: 1.8; }

.about { background: #111f2e; color: #fff; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.about-visual { aspect-ratio: 1.2; border: 1px solid rgba(255,255,255,.12); position: relative; overflow: hidden; display: grid; place-items: center; background: radial-gradient(circle at 40% 50%, rgba(255,107,44,.16), transparent 44%); }
.about-letter { font-size: min(26vw, 330px); font-weight: 900; line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.32); transform: skewX(-8deg); }
.about-ring { position: absolute; border: 1px solid rgba(62,215,197,.35); border-radius: 50%; }
.ring-one { width: 56%; height: 70%; }.ring-two { width: 78%; height: 96%; border-color: rgba(255,107,44,.22); }
.about-visual > p { position: absolute; left: 24px; bottom: 18px; color: rgba(255,255,255,.38); font: 10px/1.6 ui-monospace, monospace; letter-spacing: .18em; }
.about-lead { font-size: 17px; line-height: 1.9; color: rgba(255,255,255,.6); margin: 34px 0 42px; }
.principles { border-top: 1px solid rgba(255,255,255,.14); }
.principles > div { padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.14); display: flex; justify-content: space-between; }
.principles b { font-size: 15px; }.principles span { color: rgba(255,255,255,.45); font-size: 13px; }

.contact { background: var(--orange); padding: 90px 0; }
.contact-panel { display: grid; grid-template-columns: 1.2fr .8fr; gap: 100px; align-items: end; }
.contact .eyebrow { color: rgba(255,255,255,.65); }.contact .eyebrow span { background: #fff; }
.contact h2 { color: #fff; }
.contact-copy > p:last-child { max-width: 580px; margin: 28px 0 0; color: rgba(255,255,255,.72); line-height: 1.8; }
.contact-info { border-top: 1px solid rgba(255,255,255,.35); }
.contact-info > div { display: flex; justify-content: space-between; color: #fff; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.35); font-size: 13px; }
.contact-info > div span { opacity: .65; }.contact-info .button { margin-top: 18px; }

.site-footer { background: #050c16; color: #fff; padding: 56px 0 22px; }
.footer-main { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: start; padding-bottom: 48px; }
.brand-footer { width: max-content; }
.brand-footer .brand-logo { height: 48px; }
.footer-main > p { margin: 7px 0 0; color: rgba(255,255,255,.4); font-size: 13px; }
.footer-main nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; font-size: 13px; justify-self: end; color: rgba(255,255,255,.64); }
.footer-bottom { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; color: rgba(255,255,255,.3); font-size: 11px; }
.trademark-note { margin-top: 18px; color: rgba(255,255,255,.24); font-size: 10px; line-height: 1.7; }

.contact-dialog { width: min(520px, calc(100vw - 32px)); border: 0; padding: 38px; box-shadow: 0 30px 100px rgba(0,0,0,.35); }
.contact-dialog::backdrop { background: rgba(5,12,22,.75); backdrop-filter: blur(6px); }
.dialog-close { position: absolute; right: 18px; top: 14px; border: 0; background: transparent; font-size: 26px; cursor: pointer; color: #7c8490; }
.contact-dialog h2 { margin: 0 0 24px; font-size: 30px; letter-spacing: -.04em; }
.contact-dialog ul { padding: 0; margin: 0 0 28px; list-style: none; }
.contact-dialog li { border-top: 1px solid var(--line); padding: 13px 0; display: grid; grid-template-columns: 38px 1fr; font-size: 14px; }
.contact-dialog li span { color: var(--orange); font: 10px ui-monospace, monospace; }
.copy-status { min-height: 20px; color: #49837c; font-size: 12px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }.delay-2 { transition-delay: .18s; }.delay-3 { transition-delay: .26s; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .menu-toggle { display: block; z-index: 2; }
  .main-nav { position: fixed; inset: 0; background: var(--ink); color: #fff; padding: 110px 30px 40px; flex-direction: column; align-items: stretch; gap: 0; transform: translateX(100%); transition: transform .35s var(--ease); }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { font-size: 22px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .nav-cta { margin-top: 20px; padding-inline: 18px !important; }
  .menu-toggle.open span:first-child { transform: translateY(4px) rotate(45deg); }.menu-toggle.open span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero { min-height: auto; }
  .hero-layout { grid-template-columns: 1fr; gap: 70px; }
  .hero-copy { max-width: 660px; }
  .visual-frame { transform: none; }
  .hero-footer { margin-top: 70px; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; }.section-heading .eyebrow { margin-bottom: 0; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .applications-top, .process-layout, .about-grid, .contact-panel { grid-template-columns: 1fr; gap: 60px; }
  .process-sticky { position: static; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 30px; }.footer-main nav { grid-column: 1/-1; justify-self: start; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 28px); }
  .header-inner { height: 68px; }
  .brand-logo { height: 36px; }
  .hero { padding-top: 124px; }
  .hero h1 { font-size: 46px; }
  .hero-lead { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-footer p { display: none; }
  .hero-footer { justify-content: flex-end; }
  .visual-canvas { aspect-ratio: .95; }
  .core-node { width: 96px; height: 96px; }
  .satellite { width: 105px; }.sat-1,.sat-3 { left: 4%; }.sat-2,.sat-4 { right: 4%; }
  .section { padding: 86px 0; }
  .section-heading h2, .applications h2, .process h2, .about h2, .contact h2 { font-size: 38px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 600px; }
  .product-image { height: 210px; }
  .application-row { grid-template-columns: 44px 1fr 30px; gap: 14px; padding: 24px 0; }
  .application-row p { grid-column: 2/4; }
  .process-steps li { grid-template-columns: 58px 1fr; gap: 16px; }
  .about-grid { gap: 42px; }
  .contact { padding: 70px 0; }
  .footer-main { grid-template-columns: 1fr; }.footer-main nav { grid-column: auto; }.footer-bottom { flex-direction: column; gap: 10px; }
  .contact-dialog { padding: 30px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}