:root {
  --ink: #171717;
  --muted: #686d72;
  --line: #d8dde2;
  --paper: #f6f7f4;
  --white: #ffffff;
  --orange: #ff9f43;
  --orange-dark: #df7320;
  --steel: #dce5ee;
  --blue: #224d62;
  --mint: #8fb7a7;
  --shadow: 0 24px 70px rgba(23, 23, 23, 0.12);
  --page-pad: 50px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

.scroll-meter {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 80;
  width: 100%;
  height: 3px;
  background: transparent;
}

.scroll-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--orange);
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 50;
  display: grid;
  grid-template-columns: 170px 1fr auto auto auto;
  min-height: 76px;
  margin: 16px var(--page-pad) 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: grid;
  place-items: center;
  min-width: 0;
  padding: 0 18px;
  color: var(--ink);
  background: var(--white);
  text-transform: uppercase;
  border-right: 1px solid var(--line);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 56px;
  height: 34px;
  border: 2px solid var(--white);
  border-radius: 2px;
  font-weight: 900;
  letter-spacing: 0;
  transform: skew(-12deg);
}

.brand-text {
  font-weight: 900;
  font-style: normal;
  font-size: clamp(1rem, 1.12vw, 1.22rem);
  line-height: 1;
  letter-spacing: 0;
  color: var(--ink);
  text-align: center;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  padding: 0 30px;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding: 26px 0;
  font-size: 0.95rem;
  white-space: nowrap;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 22px;
  left: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
  content: "";
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  display: grid;
  place-items: center;
  min-width: 160px;
  padding: 0 22px;
  background: var(--orange);
  font-weight: 900;
  border-left: 1px solid var(--line);
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 14px;
  border-left: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.language-switch button {
  display: grid;
  place-items: center;
  min-width: 38px;
  height: 34px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 900;
}

.language-switch button.active {
  border-color: rgba(23, 23, 23, 0.18);
  background: var(--ink);
  color: var(--white);
}

.menu-toggle {
  display: none;
  width: 72px;
  border: 0;
  border-left: 1px solid var(--line);
  background: var(--white);
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  margin: 6px auto;
  background: var(--ink);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.84fr) minmax(420px, 1.16fr);
  gap: var(--page-pad);
  align-items: center;
  padding: var(--page-pad);
}

.hero {
  position: relative;
  min-height: calc(100vh - 108px);
  overflow: hidden;
  align-items: center;
  padding-block: 15px;
  background: rgb(255, 255, 255);
}

.release-countdown {
  position: absolute;
  top: 15px;
  right: var(--page-pad);
  z-index: 4;
  display: grid;
  gap: 5px;
  min-width: 178px;
  padding: 12px 14px;
  border: 1px solid rgba(23, 23, 23, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 14px 34px rgba(23, 23, 23, 0.08);
  text-align: right;
  backdrop-filter: blur(12px);
}

.countdown-label {
  color: var(--orange-dark);
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
}

.countdown-value {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 6px;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1;
}

.countdown-value strong {
  font-size: 1.55rem;
  font-weight: 900;
  line-height: 0.95;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--orange-dark);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 700px;
  margin-bottom: 15px;
  font-size: clamp(2.2rem, 3vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.h1-line {
  display: block;
}

.h1-brand {
  width: fit-content;
  margin-bottom: 15px;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: clamp(3.1rem, 4.8vw, 5.8rem);
  font-style: normal;
  font-weight: 780;
  line-height: 0.95;
  text-transform: uppercase;
}

.h1-subtitle {
  max-width: 560px;
  font-size: clamp(1.55rem, 2.15vw, 2.9rem);
  font-weight: 800;
  line-height: 1.08;
  text-transform: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  margin-top: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 4.7rem);
  line-height: 1;
  letter-spacing: 0;
}

.about .section-heading h2 {
  max-width: 620px;
  font-size: clamp(1.95rem, 3.3vw, 4rem);
}

.about .section-heading h2 span {
  display: block;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.05;
}

.hero-lead,
.about-copy p,
.contact-copy p {
  max-width: 640px;
  color: #32363a;
  font-size: clamp(1rem, 1.4vw, 1.22rem);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 15px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 30px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-weight: 900;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

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

.button-primary {
  border-color: var(--orange);
  background: var(--orange);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.58);
}

.hero-visual {
  position: relative;
  align-self: stretch;
  min-height: 520px;
  margin-top: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: var(--white);
}

.hero-visual img {
  position: absolute;
  right: 50%;
  bottom: 50%;
  width: min(100%, 980px);
  height: min(100%, 560px);
  max-width: none;
  filter: none;
  object-fit: contain;
  object-position: center;
  transform: translate3d(50%, 50%, 0);
  transition: transform 120ms linear;
}

.hero-specs {
  display: grid;
  gap: 10px;
  width: min(420px, 100%);
  margin-top: 15px;
}

.hero-specs span {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 16px;
  border: 1px solid rgba(23, 23, 23, 0.12);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 28px rgba(23, 23, 23, 0.08);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
}

html[lang="zh"] .hero-lead,
html[lang="zh"] .about-copy p,
html[lang="zh"] .tech-panel p,
html[lang="zh"] .metric-card p,
html[lang="zh"] .timeline p,
html[lang="zh"] .contact-copy p {
  line-height: 1.72;
}

html[lang="zh"] .h1-subtitle,
html[lang="zh"] h2 {
  line-height: 1.12;
}

html[lang="en"] .h1-subtitle {
  max-width: 620px;
  font-size: clamp(1.42rem, 2vw, 2.6rem);
}

.ticker {
  overflow: hidden;
  border-block: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
  white-space: nowrap;
}

.ticker-track {
  width: max-content;
  display: flex;
  gap: 0;
  padding: 22px 0;
  animation: ticker-marquee 30s linear infinite;
  will-change: transform;
}

.ticker-line {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
}

.ticker span {
  display: inline-flex;
  align-items: center;
  padding: 0;
  color: var(--white);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 1.08rem;
  font-weight: 800;
  text-transform: uppercase;
}

.ticker span::after {
  content: " /";
  margin-left: 28px;
  margin-right: 28px;
  color: rgba(255, 255, 255, 0.38);
}

.ticker span:last-child::after {
  content: " /";
  margin-left: 28px;
  margin-right: 28px;
}

.about {
  background: var(--white);
  grid-template-columns: minmax(260px, 0.82fr) minmax(220px, 0.58fr) minmax(360px, 1fr);
}

.about-copy {
  justify-self: end;
  width: min(640px, 100%);
}

.about-figure {
  position: relative;
  display: grid;
  place-items: center;
  align-self: center;
  justify-self: center;
  width: 100%;
  margin: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: var(--white);
}

.about-figure img {
  display: block;
  width: min(190px, 72%);
  max-height: 430px;
  object-fit: contain;
}

.callout-dot {
  position: absolute;
  left: 50%;
  top: 62%;
  width: 12px;
  height: 12px;
  border: 2px solid var(--orange-dark);
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(255, 159, 67, 0.18);
  transform: translate(-50%, -50%);
}

.callout-line {
  position: absolute;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.callout-line::before {
  position: absolute;
  height: 1px;
  background: var(--ink);
  content: "";
}

.callout-motor {
  left: 0;
  top: 43%;
}

.callout-motor::before {
  right: -38px;
  top: 50%;
  width: 32px;
}

.callout-generator {
  right: 0;
  top: 43%;
}

.callout-generator::before {
  left: -38px;
  top: 50%;
  width: 32px;
}

.callout-buffer {
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
}

.callout-buffer::before {
  left: 50%;
  bottom: 16px;
  width: 1px;
  height: 46px;
  transform: translateX(-50%);
}

.section-heading {
  max-width: 780px;
}

.section-heading.wide {
  max-width: 1120px;
  padding: var(--page-pad) var(--page-pad) 0;
}

.technology {
  background: var(--steel);
}

.anatomy {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(300px, 1.15fr) minmax(240px, 0.9fr);
  gap: 22px;
  align-items: stretch;
  padding: var(--page-pad);
}

.tech-panel,
.metric-card {
  border: 1px solid rgba(23, 23, 23, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 45px rgba(23, 23, 23, 0.08);
}

.tech-panel {
  display: flex;
  flex-direction: column;
  min-height: 310px;
  padding: 28px;
}

.tech-panel p {
  color: #40474f;
  line-height: 1.6;
}

.panel-kicker {
  color: var(--orange-dark);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.panel-stat {
  width: fit-content;
  margin-top: auto;
  padding: 10px 12px;
  background: var(--ink);
  color: var(--white);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
}

.core-diagram {
  position: relative;
  display: grid;
  grid-row: span 2;
  place-items: center;
  min-height: 642px;
  overflow: hidden;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 8px;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.45) 36%, transparent 37%),
    repeating-conic-gradient(from 20deg, rgba(23, 23, 23, 0.11) 0 3deg, transparent 3deg 12deg),
    linear-gradient(135deg, rgba(143, 183, 167, 0.32), rgba(34, 77, 98, 0.12));
}

.ring {
  position: absolute;
  border: 2px solid var(--ink);
  border-radius: 50%;
  animation: rotate 18s linear infinite;
}

.ring-outer {
  width: min(410px, 80%);
  aspect-ratio: 1;
  border-style: dashed;
}

.ring-mid {
  width: min(286px, 56%);
  aspect-ratio: 1;
  border-color: var(--orange-dark);
  animation-duration: 11s;
  animation-direction: reverse;
}

.ring-inner {
  width: min(154px, 32%);
  aspect-ratio: 1;
  background: rgba(255, 159, 67, 0.18);
  animation-duration: 8s;
}

.axis {
  position: absolute;
  width: 82%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ink), transparent);
}

.node {
  position: absolute;
  padding: 9px 12px;
  border: 1px solid var(--ink);
  background: var(--white);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.node-left {
  left: 28px;
  top: 50%;
}

.node-center {
  top: 48px;
}

.node-right {
  right: 28px;
  top: 50%;
}

.buffer {
  grid-column: 3;
}

.metrics {
  background: var(--white);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 18px;
  padding: var(--page-pad);
}

.metric-card {
  min-height: 360px;
  padding: 28px;
}

.metric-value {
  display: block;
  color: var(--orange-dark);
  font-size: clamp(3.4rem, 6vw, 6.8rem);
  font-weight: 950;
  line-height: 0.88;
}

.metric-unit {
  display: block;
  margin: 12px 0 44px;
  color: var(--blue);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.metric-card p,
.timeline p,
.investment-table strong {
  color: #3e454b;
  line-height: 1.52;
}

.investment {
  background: var(--orange);
}

.investment .eyebrow {
  color: rgba(23, 23, 23, 0.72);
}

.investment-table {
  display: grid;
  border-top: 1px solid rgba(23, 23, 23, 0.35);
}

.investment-table div {
  display: grid;
  grid-template-columns: minmax(150px, 0.45fr) 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(23, 23, 23, 0.35);
}

.investment-table span {
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.investment-table strong {
  font-size: clamp(1.1rem, 1.7vw, 1.55rem);
}

.roadmap {
  background: var(--paper);
}

.modes {
  background: var(--white);
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 22px;
  padding: var(--page-pad);
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 22px;
  padding: var(--page-pad);
}

.mode-card {
  display: grid;
  min-height: 520px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.mode-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.mode-copy {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 32px;
  border-top: 6px solid var(--ink);
}

.mode-copy .panel-kicker,
.mode-copy h3,
.mode-copy p {
  margin: 0;
}

.mode-copy p:not(.panel-kicker) {
  color: #3e454b;
  line-height: 1.52;
}

.timeline-item {
  min-height: 310px;
  padding: 32px;
  border-top: 6px solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow);
}

.timeline-item time {
  display: block;
  margin-bottom: 52px;
  color: var(--orange-dark);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-weight: 900;
  text-transform: uppercase;
}

.contact {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(280px, 0.7fr);
  gap: var(--page-pad);
  padding: calc(var(--page-pad) + 24px) var(--page-pad) var(--page-pad);
  background: var(--ink);
  color: var(--white);
}

.contact .eyebrow {
  color: var(--orange);
}

.contact h2 {
  max-width: 760px;
  margin-bottom: 28px;
  font-size: clamp(2rem, 3.8vw, 4.4rem);
  line-height: 1.04;
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.72);
  margin-top: 0;
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: rgba(255, 255, 255, 0.7);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  outline: 0;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--orange);
}

.form-status {
  min-height: 1.4em;
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
  line-height: 1.45;
}

.contact-form .button {
  width: fit-content;
  margin-top: 8px;
}

.site-footer {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 20px;
  padding: 26px var(--page-pad);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.66);
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
}

.footer-legal {
  width: fit-content;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.46);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes rotate {
  to {
    transform: rotate(360deg);
  }
}

@keyframes ticker-marquee {
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 1180px) {
  :root {
    --page-pad: 36px;
  }

  .site-header {
    grid-template-columns: 150px 1fr auto auto auto;
  }

  .main-nav {
    gap: 20px;
    padding: 0 24px;
  }

  .nav-cta {
    min-width: 166px;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }
}

@media (max-width: 900px) {
  :root {
    --page-pad: 24px;
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
    min-height: 72px;
    margin: 10px var(--page-pad) 0;
    top: 10px;
  }

  .brand {
    padding: 0 18px;
  }

  .main-nav,
  .nav-cta {
    position: fixed;
    right: 0;
    left: 0;
    display: none;
    background: var(--white);
  }

  .language-switch {
    padding: 0 10px;
    border-left: 1px solid var(--line);
  }

  .language-switch button {
    min-width: 34px;
    height: 32px;
  }

  .main-nav {
    top: 82px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    height: calc(100vh - 154px);
    padding: 20px 26px;
  }

  .main-nav a {
    width: 100%;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
    font-size: 1.4rem;
  }

  .nav-cta {
    top: calc(100vh - 72px);
    min-height: 72px;
  }

  .menu-open .main-nav,
  .menu-open .nav-cta,
  .menu-toggle {
    display: grid;
  }

  .menu-open .main-nav {
    display: flex;
  }

  .section-grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .about {
    grid-template-columns: 1fr;
  }

  .about-figure {
    width: min(280px, 100%);
    margin: 0 auto;
  }

  .callout-motor {
    left: 0;
  }

  .callout-generator {
    right: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 95px;
  }

  .hero-copy {
    margin-top: 0;
  }

  .hero-visual {
    min-height: 360px;
    margin-top: 0;
  }

  .hero-visual img {
    right: 50%;
    bottom: 50%;
    width: 100%;
    height: 100%;
    transform: translate3d(50%, 50%, 0);
  }

  .anatomy {
    grid-template-columns: 1fr;
  }

  .core-diagram {
    grid-row: auto;
    min-height: 460px;
    order: -1;
  }

  .buffer {
    grid-column: auto;
  }

  .timeline {
    grid-template-columns: 1fr;
  }

  .mode-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .brand-text {
    font-size: 1.15rem;
  }

  h1 {
    font-size: clamp(2.2rem, 12vw, 3.8rem);
  }

  .h1-line {
    white-space: normal;
  }

  .h1-brand {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .h1-subtitle {
    font-size: clamp(1.35rem, 8vw, 2rem);
  }

  h2 {
    font-size: clamp(2.25rem, 11vw, 3.6rem);
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .ticker-track {
    padding: 18px 0;
  }

  .ticker span {
    font-size: 0.92rem;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .investment-table div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}