:root {
  --ink: #07130f;
  --ink-soft: #102019;
  --surface: #f2f2e9;
  --surface-deep: #e4e6d9;
  --lime: #c8ff2e;
  --lime-soft: #e1ff8d;
  --blue: #4c7dff;
  --text: #102019;
  --muted: #68736c;
  --line: rgba(7, 19, 15, 0.18);
  --radius: 22px;
  --page: min(1180px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--surface);
  font-family: Inter, "SF Pro Display", "Noto Sans TC", "PingFang TC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: var(--ink);
  background: var(--lime);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  display: flex;
  width: var(--page);
  min-height: 86px;
  align-items: center;
  justify-content: space-between;
  color: white;
  transform: translateX(-50%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  width: 27px;
  height: 27px;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 3px;
  transform: skewX(-9deg);
}

.brand-mark i {
  display: block;
  height: 48%;
  background: var(--lime);
}

.brand-mark i:nth-child(2) {
  height: 72%;
}

.brand-mark i:nth-child(3) {
  height: 100%;
}

nav {
  display: flex;
  gap: 34px;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.05em;
}

nav a,
.text-link {
  transition: color 180ms ease;
}

nav a:hover,
nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: var(--lime);
}

.hero {
  position: relative;
  display: grid;
  min-height: 760px;
  padding: 176px max(24px, calc((100vw - 1180px) / 2)) 88px;
  color: white;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 45%, rgba(36, 88, 67, 0.68), transparent 30%),
    radial-gradient(circle at 20% 15%, rgba(76, 125, 255, 0.12), transparent 24%),
    var(--ink);
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: 70px;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.22;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, black, transparent 68%);
}

.hero-copy,
.signal-stage {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: flex;
  margin: 0 0 26px;
  align-items: center;
  gap: 10px;
  color: var(--lime);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px color-mix(in srgb, currentColor 15%, transparent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 30px;
  font-size: clamp(3.35rem, 6.6vw, 6.8rem);
  line-height: 0.98;
  letter-spacing: -0.075em;
}

h1 em,
.closing h2 em {
  color: var(--lime);
  font-style: normal;
}

.hero-lead {
  max-width: 590px;
  margin-bottom: 36px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 1.08rem;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  padding: 0 23px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 750;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--ink);
  background: var(--lime);
}

.button.secondary {
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  background: rgba(255, 255, 255, 0.08);
}

.signal-stage {
  min-height: 470px;
}

.court-grid {
  position: absolute;
  inset: 12% 4% 8%;
  opacity: 0.52;
  border: 1px solid rgba(200, 255, 46, 0.26);
  border-radius: 48% 48% 12% 12%;
  transform: perspective(550px) rotateX(59deg) rotateZ(-8deg);
  background-image: linear-gradient(rgba(200,255,46,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(200,255,46,.16) 1px, transparent 1px);
  background-size: 42px 42px;
  box-shadow: inset 0 0 70px rgba(200, 255, 46, 0.07);
}

.signal-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 172px;
  height: 172px;
  place-items: center;
  color: var(--ink);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--lime);
  box-shadow: 0 0 80px rgba(200, 255, 46, 0.2);
}

.signal-core::before,
.signal-core::after {
  position: absolute;
  content: "";
  border-radius: 50%;
  border: 1px solid var(--ink);
}

.signal-core::before {
  inset: 12px;
}

.signal-core::after {
  width: 72%;
  height: 1px;
  border: 0;
  background: var(--ink);
  transform: rotate(-32deg);
}

.signal-core span {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.09em;
}

.signal-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.signal-orbit::after {
  position: absolute;
  top: 16%;
  right: 4%;
  width: 10px;
  height: 10px;
  content: "";
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 20px var(--blue);
}

.orbit-one {
  width: 285px;
  height: 285px;
  animation: spin 16s linear infinite;
}

.orbit-two {
  width: 400px;
  height: 400px;
  border-style: dashed;
  animation: spin-reverse 28s linear infinite;
}

.metric {
  position: absolute;
  display: flex;
  min-width: 130px;
  padding: 13px 15px;
  align-items: baseline;
  gap: 9px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  background: rgba(7, 19, 15, 0.72);
  backdrop-filter: blur(12px);
}

.metric b {
  color: var(--lime);
  font-size: 1.15rem;
}

.metric span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.7rem;
}

.metric-one { top: 7%; right: 6%; }
.metric-two { bottom: 6%; left: 3%; }
.metric-three { right: -2%; bottom: 20%; }

.hero-index {
  position: absolute;
  z-index: 2;
  right: max(24px, calc((100vw - 1180px) / 2));
  bottom: 24px;
  left: max(24px, calc((100vw - 1180px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.34);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
}

.hero-index b {
  color: var(--lime);
  font-size: 0.72rem;
}

.ticker {
  overflow: hidden;
  color: var(--ink);
  background: var(--lime);
}

.ticker div {
  display: flex;
  width: max-content;
  padding: 13px 0;
  align-items: center;
  gap: 24px;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  animation: ticker 20s linear infinite;
}

.ticker i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
}

.section {
  width: var(--page);
  margin: 0 auto;
  padding: 130px 0;
}

.section-label {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.vision {
  display: grid;
  grid-template-columns: 0.8fr 2fr;
  gap: 80px;
  border-bottom: 1px solid var(--line);
}

.vision h2,
.section-heading h2,
.closing h2 {
  margin-bottom: 30px;
  font-size: clamp(2.4rem, 4.7vw, 5.2rem);
  line-height: 1.08;
  letter-spacing: -0.065em;
}

.vision-copy > p {
  max-width: 720px;
  margin-left: auto;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.9;
}

.technology {
  padding-bottom: 72px;
}

.section-heading {
  display: flex;
  margin-bottom: 58px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.section-heading h2 {
  max-width: 760px;
  margin: 0;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.capability-grid article {
  position: relative;
  min-height: 365px;
  padding: 28px;
  border-right: 1px solid var(--line);
}

.capability-grid article:last-child {
  border-right: 0;
}

.capability-number {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 800;
}

.capability-grid h3 {
  margin: 46px 0 14px;
  font-size: 1.65rem;
  letter-spacing: -0.04em;
}

.capability-grid p {
  color: var(--muted);
  line-height: 1.75;
}

.capability-icon {
  position: relative;
  width: 92px;
  height: 92px;
  margin-top: 48px;
}

.pulse {
  border: 1px solid var(--line);
  border-radius: 50%;
  box-shadow: inset 0 0 0 16px var(--surface), inset 0 0 0 17px var(--line);
  background: var(--lime);
}

.nodes::before,
.nodes::after,
.nodes {
  border: 1px solid var(--line);
  border-radius: 50%;
}

.nodes::before,
.nodes::after {
  position: absolute;
  width: 16px;
  height: 16px;
  content: "";
  background: var(--blue);
}

.nodes::before { top: -8px; left: 38px; }
.nodes::after { right: -6px; bottom: 14px; background: var(--lime); }

.layers {
  border: 1px solid var(--line);
  transform: rotate(45deg);
}

.layers::before,
.layers::after {
  position: absolute;
  inset: 12px;
  content: "";
  border: 1px solid var(--line);
}

.layers::after {
  inset: 27px;
  background: var(--lime);
}

.products {
  padding-top: 72px;
}

.product-card {
  padding: 28px;
  color: white;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

.product-meta,
.product-footer,
.product-main {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.product-meta {
  padding-bottom: 22px;
  color: rgba(255, 255, 255, 0.42);
  border-bottom: 1px solid rgba(255,255,255,.14);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--lime-soft);
}

.status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px var(--lime);
}

.product-main {
  min-height: 390px;
  padding: 58px 0;
  align-items: center;
}

.product-en {
  margin-bottom: 10px;
  color: var(--lime);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.13em;
}

.product-main h3 {
  margin-bottom: 24px;
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 0.92;
  letter-spacing: -0.1em;
}

.product-description {
  max-width: 550px;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.85;
}

.product-symbol {
  position: relative;
  display: grid;
  width: 280px;
  height: 280px;
  flex: 0 0 280px;
  place-items: center;
  border: 1px solid rgba(200,255,46,.34);
  border-radius: 50%;
}

.product-symbol::before,
.product-symbol::after {
  position: absolute;
  content: "";
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.12);
}

.product-symbol::before { inset: 28px; }
.product-symbol::after { inset: 70px; background: var(--lime); }

.product-symbol span {
  position: absolute;
  z-index: 1;
  color: var(--ink);
  font-size: 2rem;
  font-weight: 900;
}

.product-symbol span:first-child { transform: translate(-33px, -15px); }
.product-symbol span:nth-child(2) { transform: translate(33px, -15px); }
.product-symbol span:last-child { transform: translateY(29px); }

.product-footer {
  padding-top: 24px;
  align-items: center;
  border-top: 1px solid rgba(255,255,255,.14);
}

.product-footer ul {
  display: flex;
  margin: 0;
  padding: 0;
  gap: 26px;
  list-style: none;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.78rem;
}

.product-footer li::before {
  margin-right: 8px;
  color: var(--lime);
  content: "•";
}

.text-link {
  color: var(--lime);
  font-size: 0.86rem;
  font-weight: 800;
}

.text-link span {
  margin-left: 7px;
}

.closing {
  display: flex;
  min-height: 530px;
  padding: 100px max(24px, calc((100vw - 1180px) / 2));
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  color: white;
  background: var(--ink-soft);
}

.closing h2 {
  margin: 0;
}

footer {
  display: grid;
  width: var(--page);
  min-height: 150px;
  margin: 0 auto;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  color: var(--muted);
  font-size: 0.75rem;
}

.footer-brand {
  color: var(--ink);
}

footer p {
  margin: 0;
}

footer p:last-child {
  text-align: right;
}

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes spin-reverse { to { transform: translate(-50%, -50%) rotate(-360deg); } }
@keyframes ticker { to { transform: translateX(-25%); } }

@media (max-width: 900px) {
  :root { --page: min(100% - 34px, 720px); }
  .site-header nav { display: none; }
  .hero {
    min-height: 980px;
    padding-top: 145px;
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .signal-stage { min-height: 410px; }
  .vision { grid-template-columns: 1fr; gap: 36px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid article { min-height: 300px; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-grid article:last-child { border-bottom: 0; }
  .section-heading { display: block; }
  .section-heading .section-label { margin-bottom: 24px; }
  .product-main { align-items: flex-start; }
  .product-symbol { width: 210px; height: 210px; flex-basis: 210px; }
  .closing { display: block; }
  .closing .button { margin-top: 40px; }
}

@media (max-width: 620px) {
  :root { --page: calc(100% - 28px); }
  .site-header { min-height: 72px; }
  .hero { min-height: 900px; padding-top: 125px; }
  h1 { font-size: clamp(3.2rem, 16vw, 4.8rem); }
  .hero-lead { font-size: 0.98rem; }
  .signal-stage { min-height: 360px; }
  .signal-core { width: 128px; height: 128px; }
  .orbit-one { width: 220px; height: 220px; }
  .orbit-two { width: 315px; height: 315px; }
  .metric { min-width: 112px; padding: 10px; }
  .metric-three { right: 0; }
  .section { padding: 90px 0; }
  .section-heading h2, .vision h2, .closing h2 { font-size: 2.65rem; }
  .product-main { display: block; min-height: 0; padding: 50px 0; }
  .product-symbol { margin: 46px auto 0; }
  .product-footer { align-items: flex-start; flex-direction: column; }
  .product-footer ul { flex-wrap: wrap; gap: 12px 20px; }
  .product-meta span:last-child { display: none; }
  footer { grid-template-columns: 1fr; padding: 38px 0; gap: 14px; }
  footer p:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}