:root {
  --ink: #eef8ff;
  --muted: #a8bfd1;
  --bg: #040a12;
  --bg-2: #071827;
  --panel: rgba(10, 34, 52, .72);
  --panel-strong: #0b2d43;
  --line: rgba(139, 213, 242, .2);
  --cyan: #41d9ff;
  --blue: #2d72ff;
  --green: #81d742;
  --orange: #ff9d2e;
  --red: #ff544d;
  --shadow: 0 28px 80px rgba(0, 0, 0, .38);
  --radius: 26px;
  --max: 1200px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% 8%, rgba(30, 132, 178, .24), transparent 34rem),
    radial-gradient(circle at 6% 24%, rgba(37, 78, 194, .18), transparent 30rem),
    linear-gradient(145deg, #03070d 0%, #061422 48%, #062638 100%);
  line-height: 1.62;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: .18;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
.wrap { width: min(var(--max), calc(100% - 36px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 14px; background: white; color: #06101c; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(3, 9, 16, .8);
  backdrop-filter: blur(20px);
}
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: .045em; }
.brand-mark { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(145deg, var(--cyan), var(--blue)); color: white; font-weight: 950; box-shadow: 0 12px 30px rgba(45, 114, 255, .24); }
.brand small { display: block; color: var(--muted); font-weight: 650; letter-spacing: 0; font-size: .76rem; line-height: 1.15; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link, .menu-trigger { min-height: 44px; display: inline-flex; align-items: center; gap: 7px; padding: 8px 12px; color: var(--muted); border-radius: 12px; border: 0; background: transparent; cursor: pointer; font-size: .95rem; font-weight: 700; }
.nav-link:hover, .nav-link:focus-visible, .menu-trigger:hover, .menu-trigger:focus-visible, .nav-link.active, .menu-trigger.active { color: white; background: rgba(255,255,255,.07); outline: none; }
.menu-wrap { position: relative; }
.menu-trigger svg { width: 16px; transition: transform .2s ease; }
.menu-trigger[aria-expanded="true"] svg { transform: rotate(180deg); }
.dropdown { position: absolute; top: calc(100% + 10px); right: 0; width: 290px; padding: 10px; border: 1px solid var(--line); border-radius: 18px; background: #071827; box-shadow: var(--shadow); display: none; }
.dropdown.open { display: grid; gap: 4px; }
.dropdown a, .dropdown .disabled { display: grid; grid-template-columns: 10px 1fr; gap: 10px; padding: 11px; border-radius: 12px; color: var(--muted); }
.dropdown a:hover, .dropdown a:focus-visible { background: rgba(255,255,255,.07); color: white; outline: none; }
.dropdown b { display: block; color: white; font-size: .93rem; }
.dropdown small { font-size: .76rem; }
.dropdown .disabled { opacity: .56; cursor: default; }
.menu-dot { width: 9px; height: 9px; margin-top: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px currentColor; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; place-items: center; border: 1px solid var(--line); background: rgba(255,255,255,.05); color: white; border-radius: 12px; cursor: pointer; }

.hero { padding: clamp(64px, 9vw, 112px) 0 54px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(520px, 1.08fr); align-items: center; gap: 34px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px; padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.045); color: #c5d9e7; font-size: .86rem; font-weight: 800; letter-spacing: .035em; text-transform: uppercase; }
.pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 16px var(--green); }
h1, h2, h3 { text-wrap: balance; }
h1 { margin: 0 0 22px; font-size: clamp(3rem, 7.2vw, 6.5rem); line-height: .91; letter-spacing: -.075em; }
.gradient { background: linear-gradient(90deg, #fff 0%, #85e5ff 55%, #92ef74 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { max-width: 62ch; margin: 0 0 28px; color: var(--muted); font-size: clamp(1.08rem, 1.7vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.project-signature { width: fit-content; max-width: 100%; display: flex; align-items: center; gap: 14px; margin-top: 24px; padding: 12px 18px 12px 12px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.055); }
.project-signature img { width: 62px; height: 58px; object-fit: contain; filter: drop-shadow(0 8px 14px rgba(0,0,0,.22)); }
.project-signature span { color: var(--muted); font-size: .76rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.project-signature strong { display: block; color: white; font-size: 1rem; letter-spacing: .025em; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 11px 18px; border: 1px solid transparent; border-radius: 999px; font-weight: 850; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #fff; box-shadow: 0 15px 38px rgba(38, 150, 238, .25); }
.button.ghost { border-color: var(--line); background: rgba(255,255,255,.05); }

.ecosystem { position: relative; min-height: 610px; }
.ecosystem-lines { position: absolute; inset: 60px 30px; width: calc(100% - 60px); height: calc(100% - 120px); overflow: visible; opacity: .72; }
.ecosystem-lines line { stroke: url(#lineGradient); stroke-width: 1.5; stroke-dasharray: 7 8; }
.core { position: absolute; width: 206px; height: 206px; left: 50%; top: 50%; transform: translate(-50%,-50%); display: grid; place-items: center; text-align: center; padding: 28px; border-radius: 50%; border: 1px solid rgba(93, 223, 255, .55); background: radial-gradient(circle at 35% 28%, #176184, #092a43 58%, #05111e); box-shadow: 0 0 0 18px rgba(56, 208, 255, .045), 0 0 75px rgba(45, 176, 255, .27), inset 0 0 40px rgba(255,255,255,.06); }
.core strong { display: block; font-size: 1.55rem; letter-spacing: .11em; }
.core span { color: #a7d9ea; font-size: .77rem; text-transform: uppercase; letter-spacing: .13em; }
.orbit-card { position: absolute; width: 174px; min-height: 122px; padding: 14px; border: 1px solid var(--line); border-radius: 21px; background: linear-gradient(150deg, rgba(16, 55, 81, .95), rgba(6, 21, 34, .96)); box-shadow: 0 18px 42px rgba(0,0,0,.3); transition: transform .2s ease, border-color .2s ease; }
a.orbit-card:hover, a.orbit-card:focus-visible { transform: translateY(-5px); border-color: rgba(89,219,255,.62); outline: none; }
.orbit-card img, .module-icon { width: 43px; height: 43px; object-fit: cover; border-radius: 12px; margin-bottom: 10px; background: #0b2538; }
.orbit-card h3 { margin: 0; font-size: .95rem; }
.orbit-card p { margin: 4px 0 0; color: var(--muted); font-size: .73rem; line-height: 1.4; }
.orbit-card .state { display: inline-block; margin-top: 7px; color: var(--cyan); font-size: .69rem; font-weight: 850; text-transform: uppercase; letter-spacing: .07em; }
.orbit-card.one { top: 22px; left: 50%; transform: translateX(-50%); }
.orbit-card.one:hover, .orbit-card.one:focus-visible { transform: translateX(-50%) translateY(-5px); }
.orbit-card.two { top: 150px; right: 0; }
.orbit-card.three { right: 42px; bottom: 16px; }
.orbit-card.four { left: 42px; bottom: 16px; }
.orbit-card.five { top: 150px; left: 0; }
.module-icon { display: grid; place-items: center; font-weight: 950; color: white; background: linear-gradient(145deg, #14759c, #2c4bbd); }

.section { padding: clamp(62px, 8vw, 100px) 0; }
.section.alt { border-block: 1px solid rgba(255,255,255,.06); background: rgba(3, 12, 21, .34); }
.section-heading { max-width: 790px; margin-bottom: 34px; }
.kicker { color: var(--cyan); font-size: .83rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.section-heading h2 { margin: 8px 0 12px; font-size: clamp(2.1rem, 4.5vw, 4rem); line-height: 1.02; letter-spacing: -.052em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 1.08rem; }
.module-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.module-card { min-height: 250px; display: flex; flex-direction: column; padding: 20px; border: 1px solid var(--line); border-radius: 23px; background: var(--panel); }
.module-card img { width: 62px; height: 62px; object-fit: cover; border-radius: 15px; margin-bottom: 20px; }
.module-card h3 { margin: 0 0 8px; font-size: 1.12rem; }
.module-card p { margin: 0 0 18px; color: var(--muted); font-size: .9rem; }
.module-card a, .module-card .soon { margin-top: auto; color: var(--cyan); font-size: .84rem; font-weight: 850; }
.module-card .soon { color: #7892a4; }

.statement { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; align-items: stretch; }
.quote-panel, .facts-panel, .content-card, .feature-card, .flow-step { border: 1px solid var(--line); background: var(--panel); border-radius: var(--radius); box-shadow: 0 18px 48px rgba(0,0,0,.17); }
.quote-panel { padding: clamp(28px, 5vw, 52px); display: flex; flex-direction: column; justify-content: space-between; }
.quote-panel blockquote { margin: 0 0 30px; font-size: clamp(1.8rem, 3.5vw, 3.2rem); line-height: 1.08; letter-spacing: -.045em; font-weight: 850; }
.quote-panel cite { color: var(--muted); font-style: normal; }
.facts-panel { padding: 28px; display: grid; gap: 12px; }
.fact { padding: 18px; border-radius: 17px; background: rgba(255,255,255,.045); }
.fact strong { display: block; font-size: 1.7rem; color: #9de8ff; }
.fact span { color: var(--muted); font-size: .9rem; }

.page-hero { padding: clamp(54px, 8vw, 90px) 0 42px; }
.page-hero-grid { display: grid; grid-template-columns: 1fr .82fr; gap: clamp(28px, 6vw, 72px); align-items: center; }
.page-hero h1 { font-size: clamp(3rem, 7vw, 6.4rem); }
.hero-visual { min-height: 420px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 34px; padding: 30px; background: radial-gradient(circle at 50% 35%, rgba(55, 203, 255, .16), transparent 55%), rgba(7, 28, 43, .63); box-shadow: var(--shadow); overflow: hidden; }
.hero-visual img { max-height: 390px; width: 100%; object-fit: contain; border-radius: 22px; }
.hero-visual.poster { padding: 0; }
.hero-visual.poster img { max-height: 620px; height: 100%; object-fit: cover; border-radius: 0; }
.hero-visual.showcase { grid-template-columns: .8fr 1.2fr; gap: 18px; align-items: stretch; padding: 20px; }
.showcase-panel { min-width: 0; display: grid; place-items: center; padding: 16px; border: 1px solid rgba(255,255,255,.1); border-radius: 22px; background: rgba(3, 14, 26, .58); overflow: hidden; }
.showcase-panel.logo-panel img { max-height: 245px; }
.showcase-panel.device-panel { background: #e5e7e8; }
.showcase-panel.device-panel img { max-height: 500px; height: 100%; object-fit: contain; border-radius: 12px; }
.hero-visual.showcase.zizhu-showcase .showcase-panel.device-panel { background: #f1f1f1; }
.hero-visual.showcase.zizhu-showcase .showcase-panel.logo-panel img { max-height: 285px; }
.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.mini-stat { padding: 15px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.045); }
.mini-stat b { display: block; color: white; }
.mini-stat span { color: var(--muted); font-size: .79rem; }
.content-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.content-card { padding: clamp(24px, 4vw, 36px); }
.content-card h3 { margin: 0 0 10px; font-size: 1.35rem; }
.content-card p { margin: 0; color: var(--muted); }
.sensor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feature-card { padding: 22px; }
.feature-card .big { display: block; margin-bottom: 8px; color: var(--cyan); font-size: 1.65rem; font-weight: 900; }
.feature-card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; counter-reset: flow; }
.flow-step { min-height: 180px; padding: 20px; position: relative; }
.flow-step::before { counter-increment: flow; content: "0" counter(flow); display: block; margin-bottom: 20px; color: var(--cyan); font-weight: 900; font-size: .8rem; letter-spacing: .1em; }
.flow-step:not(:last-child)::after { content: "→"; position: absolute; right: -17px; top: 50%; z-index: 2; color: var(--cyan); font-size: 1.35rem; }
.flow-step h3 { margin: 0 0 7px; font-size: 1rem; }
.flow-step p { margin: 0; color: var(--muted); font-size: .82rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tag { padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; color: #c5dbe8; background: rgba(255,255,255,.04); font-size: .77rem; font-weight: 750; }
.notice { margin-top: 22px; padding: 17px 19px; border-left: 3px solid var(--orange); border-radius: 8px 16px 16px 8px; background: rgba(255, 157, 46, .08); color: #d5c4aa; }
.downloads-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.download-card { min-height: 230px; display: grid; grid-template-columns: 64px 1fr; align-content: start; gap: 6px 18px; padding: 24px; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(150deg, rgba(14, 54, 80, .9), rgba(5, 20, 33, .94)); box-shadow: 0 18px 46px rgba(0,0,0,.2); transition: transform .18s ease, border-color .18s ease; }
.download-card:hover, .download-card:focus-visible { transform: translateY(-4px); border-color: rgba(65,217,255,.6); outline: none; }
.pdf-mark { grid-row: 1 / span 4; width: 64px; height: 76px; display: grid; place-items: center; border-radius: 12px 12px 17px 12px; background: linear-gradient(145deg, #ff655d, #b7222c); color: white; font-size: .86rem; font-weight: 950; letter-spacing: .08em; box-shadow: 0 12px 24px rgba(133, 20, 28, .26); }
.download-card h3 { margin: 0; font-size: 1.18rem; }
.download-card p { margin: 2px 0 8px; color: var(--muted); font-size: .9rem; }
.download-meta { color: #7f9aad; font-size: .76rem; font-weight: 750; }
.download-action { margin-top: 10px; color: var(--cyan); font-size: .86rem; font-weight: 900; }

.footer { padding: 36px 0 44px; border-top: 1px solid rgba(255,255,255,.08); color: var(--muted); }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; }
.footer strong { color: white; }
.footer p { max-width: 660px; margin: 8px 0 0; font-size: .88rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: .86rem; font-weight: 750; }

@media (max-width: 1060px) {
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 760px; }
  .ecosystem { width: min(660px, 100%); margin-inline: auto; }
  .module-grid { grid-template-columns: repeat(3, 1fr); }
  .sensor-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-step:nth-child(3)::after { display: none; }
}

@media (max-width: 760px) {
  .menu-toggle { display: grid; }
  .nav-menu { position: absolute; left: 18px; right: 18px; top: calc(100% + 8px); display: none; padding: 10px; border: 1px solid var(--line); border-radius: 18px; background: #071827; box-shadow: var(--shadow); }
  .nav-menu.open { display: grid; }
  .nav-link, .menu-trigger { width: 100%; justify-content: space-between; }
  .dropdown { position: static; width: 100%; margin-top: 4px; box-shadow: none; background: rgba(255,255,255,.035); }
  .hero { padding-top: 58px; }
  .ecosystem { min-height: auto; display: grid; grid-template-columns: 1fr; gap: 10px; }
  .ecosystem-lines { display: none; }
  .core, .orbit-card, .orbit-card.one, .orbit-card.two, .orbit-card.three, .orbit-card.four, .orbit-card.five { position: static; width: 100%; height: auto; min-height: 0; transform: none; }
  .core { border-radius: 24px; padding: 24px; margin-bottom: 4px; }
  .orbit-card { display: grid; grid-template-columns: 50px 1fr; column-gap: 12px; }
  .orbit-card img, .orbit-card .module-icon { grid-row: span 3; margin: 0; }
  .orbit-card.one:hover, .orbit-card.one:focus-visible { transform: translateY(-3px); }
  .module-grid, .content-grid, .statement, .downloads-grid { grid-template-columns: 1fr; }
  .module-card { min-height: 210px; }
  .flow { grid-template-columns: 1fr; }
  .flow-step { min-height: 0; }
  .flow-step:not(:last-child)::after { content: "↓"; display: block; right: 22px; top: auto; bottom: -19px; }
  .mini-stats { grid-template-columns: 1fr; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 520px) {
  .wrap { width: min(100% - 24px, var(--max)); }
  h1 { font-size: clamp(2.65rem, 16vw, 4rem); }
  .section { padding: 56px 0; }
  .module-grid, .sensor-grid { grid-template-columns: 1fr; }
  .hero-actions .button { width: 100%; }
  .project-signature { width: 100%; }
  .hero-visual { min-height: 300px; padding: 18px; }
  .hero-visual.showcase { grid-template-columns: 1fr; }
  .showcase-panel.logo-panel img { max-height: 180px; }
  .showcase-panel.device-panel img { max-height: 360px; }
  .download-card { grid-template-columns: 52px 1fr; padding: 20px; min-height: 0; }
  .pdf-mark { width: 52px; height: 64px; }
}

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