:root {
  --ink: #0c1714;
  --muted: #60706a;
  --line: #dfe7e3;
  --paper: #f4f7f5;
  --white: #ffffff;
  --night: #07110f;
  --night-soft: #0d1d19;
  --lime: #b9f24b;
  --mint: #52d6aa;
  --aqua: #6ce9d2;
  --shell: min(1180px, calc(100% - 48px));
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: var(--shell); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: -60px; padding: 10px 16px; background: var(--lime); border-radius: 8px; transition: top .2s; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  color: #eafff8;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(7,17,15,.72);
  backdrop-filter: blur(18px);
}
.header-inner { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; letter-spacing: .16em; }
.brand-mark { width: 34px; height: 34px; }
.brand-mark path:first-child { fill: none; stroke: var(--lime); stroke-width: 2; }
.brand-mark path:last-child { fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.site-nav { display: flex; align-items: center; gap: 42px; font-size: 14px; color: rgba(234,255,248,.72); }
.site-nav a { position: relative; transition: color .2s; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: var(--lime); transition: right .25s; }
.site-nav a:hover { color: #fff; }
.site-nav a:hover::after { right: 0; }
.menu-button { display: none; border: 0; background: transparent; color: #fff; padding: 6px; }
.menu-button > span:not(.sr-only) { display: block; width: 24px; height: 1px; margin: 6px 0; background: currentColor; }

.hero {
  position: relative;
  min-height: 760px;
  height: min(900px, 100svh);
  overflow: hidden;
  color: #eafff8;
  background:
    radial-gradient(circle at 74% 40%, rgba(45,151,119,.18), transparent 32%),
    linear-gradient(145deg, #06100e 0%, #0a1916 55%, #07110f 100%);
}
.hero-grid { position: relative; z-index: 4; height: 100%; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 64px; padding-top: 74px; }
.hero-copy { padding-bottom: 12px; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 26px; color: rgba(221,255,244,.62); font-size: 11px; font-weight: 700; letter-spacing: .22em; }
.eyebrow span { width: 28px; height: 1px; background: var(--lime); }
.eyebrow.dark { color: #75847f; }
.hero h1, .approach h2, .contact h2 { margin: 0; font-weight: 520; letter-spacing: -.055em; }
.hero h1 { max-width: 720px; font-size: clamp(56px, 5.15vw, 74px); line-height: 1.02; }
.hero h1 > span, .hero h1 > em { white-space: nowrap; }
.hero h1 em { color: var(--lime); font-style: normal; }
.hero-intro { max-width: 570px; margin: 30px 0 0; color: rgba(227,245,239,.7); font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; gap: 14px; margin-top: 38px; }
.button { min-width: 150px; height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 22px; border: 1px solid rgba(255,255,255,.16); border-radius: 999px; font-size: 14px; transition: transform .25s, background .25s, color .25s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #07110f; background: var(--lime); border-color: var(--lime); font-weight: 700; }
.button-primary:hover { background: #c9ff60; }
.button-ghost:hover { color: #fff; background: rgba(255,255,255,.08); }

.hero-visual { position: relative; min-height: 510px; display: flex; align-items: center; justify-content: center; }
.signal-card { position: relative; width: min(445px, 88%); padding: 22px; border: 1px solid rgba(255,255,255,.12); border-radius: 32px; background: linear-gradient(145deg, rgba(25,54,45,.75), rgba(9,26,21,.84)); box-shadow: 0 44px 100px rgba(0,0,0,.34); backdrop-filter: blur(16px); }
.card-topline { display: flex; align-items: center; gap: 9px; color: rgba(232,255,247,.72); font-size: 12px; }
.card-topline small { margin-left: auto; color: rgba(185,242,75,.68); letter-spacing: .14em; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 6px rgba(185,242,75,.08); }
.pulse-wrap { position: relative; height: 290px; display: flex; align-items: center; justify-content: center; }
.pulse-ring { position: absolute; border: 1px solid rgba(117,229,192,.18); border-radius: 50%; }
.ring-three { width: 235px; height: 235px; }
.ring-two { width: 175px; height: 175px; }
.ring-one { width: 116px; height: 116px; border-color: rgba(185,242,75,.36); animation: glow 3s ease-in-out infinite; }
.pulse-core { position: relative; width: 74px; height: 74px; display: grid; place-items: center; border-radius: 50%; background: var(--lime); box-shadow: 0 0 55px rgba(185,242,75,.3); }
.pulse-core svg { width: 32px; fill: none; stroke: #0a1713; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.metric-row { display: grid; grid-template-columns: repeat(3,1fr); padding-top: 19px; border-top: 1px solid rgba(255,255,255,.1); }
.metric-row div { text-align: center; border-right: 1px solid rgba(255,255,255,.08); }
.metric-row div:last-child { border: 0; }
.metric-row strong, .metric-row span { display: block; }
.metric-row strong { color: #fff; font-size: 14px; }
.metric-row span { margin-top: 6px; color: rgba(232,255,247,.42); font-size: 10px; }
.float-card { position: absolute; display: flex; align-items: center; gap: 12px; padding: 13px 17px; border: 1px solid rgba(255,255,255,.12); border-radius: 17px; background: rgba(11,31,25,.82); box-shadow: 0 18px 50px rgba(0,0,0,.28); backdrop-filter: blur(12px); }
.float-card-one { top: 68px; right: -12px; }
.float-card-two { bottom: 56px; left: -30px; }
.float-card strong, .float-card small { display: block; }
.float-card strong { color: #effff9; font-size: 12px; }
.float-card small { margin-top: 4px; color: rgba(232,255,247,.46); font-size: 9px; }
.float-icon { width: 30px; height: 30px; display: grid; place-items: center; color: #0b1713; background: var(--lime); border-radius: 9px; }
.tiny-chart { width: 32px; height: 28px; display: flex; align-items: flex-end; gap: 3px; padding: 5px; border-radius: 8px; background: rgba(108,233,210,.1); }
.tiny-chart i { flex: 1; background: var(--aqua); border-radius: 2px; }
.tiny-chart i:nth-child(1) { height: 35%; }.tiny-chart i:nth-child(2) { height: 68%; }.tiny-chart i:nth-child(3) { height: 52%; }.tiny-chart i:nth-child(4) { height: 90%; }
.orb { position: absolute; z-index: 1; border-radius: 50%; filter: blur(4px); }
.orb-one { width: 520px; height: 520px; right: -220px; top: 140px; border: 1px solid rgba(108,233,210,.1); }
.orb-two { width: 250px; height: 250px; left: 38%; bottom: -170px; background: rgba(65,180,142,.09); filter: blur(50px); }
.grid-plane { position: absolute; z-index: 0; left: -5%; right: -5%; bottom: -170px; height: 430px; opacity: .12; transform: perspective(500px) rotateX(64deg); background-image: linear-gradient(rgba(146,227,202,.45) 1px, transparent 1px), linear-gradient(90deg, rgba(146,227,202,.45) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to bottom, transparent, #000 38%, transparent); }
.scroll-cue { position: absolute; z-index: 5; left: 50%; bottom: 28px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; color: rgba(232,255,247,.36); font-size: 10px; letter-spacing: .12em; }
.scroll-cue span { width: 1px; height: 24px; background: linear-gradient(var(--lime), transparent); }

.section { padding: 130px 0; }
.services { background: var(--paper); }
.section-heading { display: grid; grid-template-columns: 1fr .75fr; align-items: end; gap: 50px; margin-bottom: 56px; }
.section-heading h2 { margin: 0; font-size: clamp(42px, 5vw, 68px); line-height: 1.1; letter-spacing: -.05em; font-weight: 560; }
.section-heading > p { max-width: 440px; margin: 0 0 6px auto; color: var(--muted); line-height: 1.9; }
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.service-card { position: relative; min-height: 365px; padding: 34px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.68); transition: transform .3s, border-color .3s, box-shadow .3s; }
.service-card:hover { transform: translateY(-7px); border-color: #cad7d1; box-shadow: 0 25px 60px rgba(21,45,36,.08); }
.service-card.featured { color: #edfff8; border-color: var(--night-soft); background: var(--night-soft); }
.service-index { position: absolute; right: 28px; top: 26px; color: #93a19c; font-size: 11px; letter-spacing: .15em; }
.featured .service-index { color: rgba(231,255,247,.35); }
.service-icon { width: 62px; height: 62px; display: grid; place-items: center; margin: 38px 0 70px; border-radius: 18px; background: #e8efeb; }
.featured .service-icon { background: var(--lime); }
.service-icon svg { width: 31px; fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { margin: 0 0 15px; font-size: 24px; letter-spacing: -.03em; }
.service-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.featured p { color: rgba(231,255,247,.58); }

.approach { position: relative; color: #eafff8; background: var(--night); overflow: hidden; }
.approach::after { content: ""; position: absolute; width: 600px; height: 600px; right: -300px; top: 0; border: 1px solid rgba(185,242,75,.08); border-radius: 50%; box-shadow: 0 0 0 100px rgba(185,242,75,.02), 0 0 0 200px rgba(185,242,75,.015); }
.approach-grid { position: relative; z-index: 2; display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: center; }
.approach h2 { font-size: clamp(48px, 5.5vw, 76px); line-height: 1.08; }
.approach-copy > p:last-child { max-width: 490px; margin: 30px 0 0; color: rgba(231,255,247,.58); line-height: 1.9; }
.principle { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.principle > span { color: var(--lime); font-size: 12px; letter-spacing: .12em; }
.principle h3 { margin: 0 0 10px; font-size: 21px; }
.principle p { margin: 0; color: rgba(231,255,247,.48); line-height: 1.8; }

.contact { padding: 110px 0; background: var(--lime); }
.contact-card { display: grid; grid-template-columns: 1fr 280px; align-items: end; gap: 60px; }
.contact .eyebrow.dark { color: rgba(7,17,15,.6); }
.contact .eyebrow span { background: var(--ink); }
.contact h2 { font-size: clamp(50px, 6vw, 82px); line-height: 1.06; }
.contact-link { height: 88px; display: flex; align-items: center; justify-content: space-between; padding: 0 25px; border-top: 1px solid rgba(7,17,15,.45); border-bottom: 1px solid rgba(7,17,15,.45); transition: padding .25s; }
.contact-link:hover { padding-left: 34px; padding-right: 16px; }
.contact-link strong { font-size: 28px; font-weight: 400; }

.site-footer { padding: 34px 0; color: rgba(234,255,248,.5); background: #050c0a; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto auto; align-items: center; gap: 34px; }
.footer-brand { color: #fff; }
.footer-inner p { text-align: center; font-size: 13px; }
.footer-inner small { text-align: right; font-size: 11px; }
.icp-link { font-size: 11px; color: rgba(234,255,248,.58); transition: color .2s; }
.icp-link:hover { color: var(--lime); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s ease, transform .75s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-small { transition-delay: .1s; }
.reveal-delay { transition-delay: .2s; }
@keyframes glow { 0%,100% { transform: scale(.96); opacity: .8; } 50% { transform: scale(1.05); opacity: 1; } }

@media (max-width: 980px) {
  .hero { height: auto; min-height: 900px; }
  .hero-grid { grid-template-columns: 1fr; gap: 10px; padding-top: 150px; padding-bottom: 90px; }
  .hero-copy { text-align: center; }
  .eyebrow { justify-content: center; }
  .hero-intro { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { min-height: 450px; }
  .section-heading, .approach-grid { grid-template-columns: 1fr; gap: 42px; }
  .section-heading > p { margin-left: 0; }
  .service-card { padding: 26px; }
  .service-icon { margin-bottom: 50px; }
  .approach-grid { gap: 64px; }
}

@media (max-width: 720px) {
  :root { --shell: min(100% - 32px, 1180px); --radius: 22px; }
  .header-inner { height: 66px; }
  .menu-button { display: block; }
  .site-nav { position: absolute; top: 65px; left: 0; right: 0; display: none; flex-direction: column; gap: 0; padding: 12px 16px 22px; color: #eafff8; background: rgba(7,17,15,.98); }
  .site-nav.open { display: flex; }
  .site-nav a { width: 100%; padding: 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
  .hero { min-height: 940px; }
  .hero-grid.shell { width: 100%; padding: 125px 16px 90px; }
  .hero-copy { min-width: 0; }
  .hero h1 { font-size: 44px; line-height: 1.08; }
  .hero-intro { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .hero-visual { min-height: 410px; }
  .signal-card { width: 100%; padding: 17px; border-radius: 25px; }
  .pulse-wrap { height: 245px; }
  .ring-three { width: 205px; height: 205px; }
  .ring-two { width: 155px; height: 155px; }
  .float-card-one { right: -8px; top: 34px; }
  .float-card-two { left: -7px; bottom: 20px; }
  .section { padding: 88px 0; }
  .section-heading { margin-bottom: 36px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 300px; }
  .service-icon { margin: 25px 0 42px; }
  .approach-grid { gap: 45px; }
  .principle { grid-template-columns: 42px 1fr; gap: 10px; }
  .contact { padding: 80px 0; }
  .contact-card { grid-template-columns: 1fr; gap: 50px; }
  .contact h2 { font-size: 48px; }
  .footer-inner { grid-template-columns: 1fr; gap: 16px; justify-items: center; }
  .footer-inner p, .footer-inner small { margin: 0; text-align: center; }
}

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