@import url("https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@500;600;700;800&display=swap");

:root {
  --ink: #101517;
  --muted: #687176;
  --paper: #f4f5ee;
  --white: #ffffff;
  --dark: #07131b;
  --dark-2: #0c2830;
  --line: rgba(16, 21, 23, 0.14);
  --line-light: rgba(255, 255, 255, 0.16);
  --lime: #d5ff4d;
  --sky: #59c9f5;
  --amber: #ffb54d;
  --sea: #71e0c1;
  --shadow: 0 28px 76px rgba(4, 22, 29, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: "Manrope", "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

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

img {
  display: block;
  max-width: 100%;
}

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

h1,
h2,
h3 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

h1 {
  margin-bottom: 18px;
  font-size: 74px;
  line-height: 1.02;
  font-weight: 800;
}

h2 {
  margin-bottom: 16px;
  font-size: 46px;
  line-height: 1.12;
  font-weight: 700;
}

h3 {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.2;
}

p {
  line-height: 1.8;
}

.section-shell {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(7, 19, 27, 0.88);
  color: #fff;
  backdrop-filter: blur(18px);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(7, 19, 27, 0.98);
  box-shadow: 0 13px 32px rgba(0, 0, 0, 0.24);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: max-content;
  font-size: 20px;
  font-weight: 800;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex: 1;
}

.nav-links a {
  position: relative;
  padding: 8px 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  background: var(--lime);
}

.header-action,
.primary-button,
.outline-button,
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 800;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.header-action,
.primary-button,
.download-button {
  color: #101517;
  background: var(--lime);
}

.header-action:hover,
.primary-button:hover,
.download-button:hover {
  background: #e1ff83;
  transform: translateY(-1px);
}

.outline-button {
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.outline-button:hover {
  border-color: rgba(255, 255, 255, 0.46);
  background: rgba(255, 255, 255, 0.1);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: var(--lime);
  font-family: "DM Mono", "PingFang SC", monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: currentColor;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.cover {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 76px);
  color: #fff;
  background: var(--dark);
}

.cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 12, 20, 0.32), rgba(4, 12, 20, 0.92)),
    url("hero-network.png") center/cover no-repeat;
  animation: coverMove 24s ease-in-out infinite alternate;
}

.cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 35%, rgba(89, 201, 245, 0.14), transparent 30%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 98px);
  pointer-events: none;
}

.cover-inner {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 76px);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 72px 0 38px;
  text-align: center;
}

.cover-copy {
  max-width: 800px;
}

.cover-copy h1 {
  max-width: 760px;
}

.cover-copy p:not(.eyebrow) {
  max-width: 660px;
  margin: 0 auto;
  color: rgba(236, 250, 251, 0.74);
  font-size: 17px;
}

.cover-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.route-stage {
  position: relative;
  width: min(100%, 1140px);
  min-height: 270px;
  margin-top: auto;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(4, 15, 21, 0.26);
}

.route-stage::before {
  content: "";
  position: absolute;
  top: 54%;
  left: -5%;
  width: 110%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--sky) 18%, var(--lime) 54%, var(--amber) 80%, transparent 100%);
  box-shadow: 0 0 28px rgba(89, 201, 245, 0.66);
  transform: rotate(-8deg);
  animation: flowLine 3.8s ease-in-out infinite;
}

.route-stage::after {
  content: "";
  position: absolute;
  inset: 28px 6%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    radial-gradient(circle at 17% 68%, var(--sky) 0 5px, transparent 6px),
    radial-gradient(circle at 42% 51%, var(--lime) 0 5px, transparent 6px),
    radial-gradient(circle at 68% 39%, var(--amber) 0 5px, transparent 6px),
    radial-gradient(circle at 87% 23%, var(--sky) 0 5px, transparent 6px);
}

.route-label {
  position: absolute;
  z-index: 1;
  color: rgba(236, 250, 251, 0.7);
  font-family: "DM Mono", monospace;
  font-size: 11px;
}

.route-label strong {
  display: block;
  margin-bottom: 5px;
  color: #fff;
  font-family: "Manrope", sans-serif;
  font-size: 16px;
}

.route-label.a {
  bottom: 30px;
  left: 8%;
}

.route-label.b {
  top: 42px;
  left: 38%;
}

.route-label.c {
  top: 44px;
  right: 9%;
  text-align: right;
}

.cover-foot {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.cover-foot div {
  padding: 16px 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  text-align: left;
}

.cover-foot div:last-child {
  border-right: 0;
}

.cover-foot strong {
  display: block;
  margin-bottom: 3px;
  color: var(--lime);
  font-size: 18px;
}

.cover-foot span {
  color: rgba(236, 250, 251, 0.62);
  font-size: 12px;
}

.manifesto {
  padding: 112px 0;
  background: var(--paper);
}

.manifesto-grid {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 310px;
  gap: 30px;
  align-items: start;
}

.section-index {
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.manifesto-copy h2 {
  max-width: 720px;
}

.manifesto-copy p {
  max-width: 690px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.manifesto-note {
  padding: 18px 0 0 18px;
  border-top: 2px solid var(--lime);
  color: var(--muted);
  font-size: 13px;
}

.manifesto-note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 16px;
}

.story-stack {
  background: var(--dark);
}

.story-band {
  position: relative;
  min-height: 400px;
  display: grid;
  grid-template-columns: 120px minmax(0, 0.9fr) minmax(340px, 1.1fr);
  gap: 32px;
  align-items: center;
  overflow: hidden;
  border-top: 1px solid var(--line-light);
  color: #fff;
}

.story-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  opacity: 0.32;
}

.story-band.game::before,
.story-band.media::before {
  background-image: url("hero-network.png");
}

.story-band.work::before {
  background-image: url("download-devices.png");
  opacity: 0.42;
}

.story-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 18, 25, 0.96), rgba(6, 18, 25, 0.5), rgba(6, 18, 25, 0.88));
}

.story-band > * {
  position: relative;
  z-index: 1;
}

.story-number {
  color: var(--lime);
  font-family: "DM Mono", monospace;
  font-size: 15px;
}

.story-title h2 {
  max-width: 430px;
  margin-bottom: 0;
  color: #fff;
}

.story-info {
  max-width: 500px;
}

.story-info p {
  color: rgba(236, 250, 251, 0.72);
  font-size: 16px;
}

.story-info a {
  display: inline-flex;
  margin-top: 4px;
  color: var(--lime);
  font-size: 13px;
  font-weight: 800;
}

.network-wall {
  padding: 104px 0;
  background: var(--white);
}

.network-panel {
  position: relative;
  min-height: 510px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(4, 13, 21, 0.94), rgba(4, 13, 21, 0.28)),
    url("hero-network.png") center/cover no-repeat;
  box-shadow: var(--shadow);
}

.network-panel-copy {
  position: relative;
  z-index: 1;
  max-width: 470px;
  padding: 46px;
  color: #fff;
}

.network-panel-copy h2 {
  color: #fff;
}

.network-panel-copy p:not(.eyebrow) {
  color: rgba(236, 250, 251, 0.74);
}

.network-ledger {
  position: absolute;
  right: 44px;
  bottom: 44px;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(610px, calc(100% - 88px));
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  border-left: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(4, 16, 22, 0.66);
  backdrop-filter: blur(14px);
}

.network-ledger div {
  padding: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.22);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.network-ledger strong {
  display: block;
  margin-bottom: 4px;
  color: var(--lime);
  font-size: 20px;
}

.network-ledger span {
  color: rgba(236, 250, 251, 0.68);
  font-size: 11px;
}

.plans {
  padding: 112px 0;
  background: var(--paper);
}

.plans-head {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 30px;
  margin-bottom: 34px;
}

.plans-head p:not(.eyebrow) {
  max-width: 580px;
  margin-bottom: 0;
  color: var(--muted);
}

.plans-table {
  border-top: 2px solid var(--ink);
}

.plan-row {
  display: grid;
  grid-template-columns: 0.8fr 1.3fr 0.72fr 0.7fr auto;
  gap: 20px;
  align-items: center;
  padding: 21px 0;
  border-bottom: 1px solid var(--line);
}

.plan-row.highlight {
  color: #fff;
  background: var(--dark);
}

.plan-row > *:first-child {
  padding-left: 18px;
}

.plan-row > *:last-child {
  padding-right: 18px;
}

.plan-name strong {
  display: block;
  font-size: 19px;
}

.plan-name span,
.plan-feature,
.plan-device {
  color: var(--muted);
  font-size: 13px;
}

.plan-row.highlight .plan-name span,
.plan-row.highlight .plan-feature,
.plan-row.highlight .plan-device {
  color: rgba(255, 255, 255, 0.68);
}

.plan-price {
  font-size: 25px;
  font-weight: 800;
}

.plan-price small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.plan-row.highlight .plan-price small {
  color: rgba(255, 255, 255, 0.62);
}

.plan-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.plan-row.highlight .plan-action {
  border-color: var(--lime);
  color: var(--dark);
  background: var(--lime);
}

.download-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: calc(100vh - 76px);
  background: var(--paper);
}

.download-rail {
  position: sticky;
  top: 76px;
  height: calc(100vh - 76px);
  padding: 42px 30px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(5, 17, 24, 0.86), rgba(5, 17, 24, 0.96)),
    url("hero-network.png") center/cover no-repeat;
}

.rail-mark {
  margin-bottom: 68px;
  color: var(--lime);
  font-family: "DM Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.rail-title {
  margin-bottom: 36px;
  color: #fff;
  font-size: 38px;
}

.rail-nav {
  display: grid;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.rail-nav a {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 700;
}

.rail-nav a:hover {
  color: var(--lime);
}

.rail-status {
  position: absolute;
  right: 30px;
  bottom: 38px;
  left: 30px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
}

.rail-status strong {
  display: block;
  margin-bottom: 5px;
  color: var(--lime);
}

.download-workspace {
  min-width: 0;
  padding: 62px min(7vw, 100px) 92px;
}

.workspace-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: end;
  margin-bottom: 50px;
}

.workspace-head p:not(.eyebrow) {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
}

.release-stamp {
  padding: 16px;
  border-top: 2px solid var(--lime);
  background: var(--white);
}

.release-stamp strong {
  display: block;
  margin-bottom: 4px;
  font-size: 20px;
}

.release-stamp span {
  color: var(--muted);
  font-size: 12px;
}

.client-directory {
  border-top: 2px solid var(--ink);
}

.directory-head,
.client-entry {
  display: grid;
  grid-template-columns: 64px minmax(160px, 0.75fr) minmax(0, 1.4fr) 130px;
  gap: 22px;
  align-items: center;
}

.directory-head {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.client-entry {
  min-height: 116px;
  border-bottom: 1px solid var(--line);
  transition: background 0.18s ease;
}

.client-entry:hover {
  background: rgba(213, 255, 77, 0.22);
}

.entry-index {
  color: var(--muted);
  font-family: "DM Mono", monospace;
  font-size: 12px;
}

.entry-platform strong {
  display: block;
  margin-bottom: 4px;
  font-size: 20px;
}

.entry-platform span,
.entry-build,
.entry-build em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.entry-build {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.entry-build em::before {
  content: "·";
  margin-right: 6px;
  color: var(--lime);
  font-weight: 900;
}

.download-button {
  min-width: 112px;
}

.download-button.is-pending {
  color: var(--muted);
  background: #e4e8e9;
}

.workspace-footer {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  margin-top: 58px;
}

.install-strip {
  padding: 26px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(4, 17, 24, 0.94), rgba(11, 45, 49, 0.82)),
    url("hero-network.png") center/cover no-repeat;
}

.install-strip h2 {
  color: #fff;
  font-size: 32px;
}

.install-strip p {
  color: rgba(236, 250, 251, 0.72);
}

.install-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.install-steps span {
  display: block;
  padding-top: 10px;
  border-top: 2px solid var(--lime);
  color: rgba(236, 250, 251, 0.76);
  font-size: 12px;
}

.faq-box {
  padding: 0;
  background: var(--white);
}

.faq-box details {
  border-bottom: 1px solid var(--line);
}

.faq-box summary {
  cursor: pointer;
  padding: 18px;
  font-size: 14px;
  font-weight: 800;
}

.faq-box p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer {
  padding: 28px 0;
  color: rgba(236, 250, 251, 0.65);
  background: var(--dark);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin-bottom: 0;
  font-size: 12px;
}

@keyframes coverMove {
  from {
    transform: scale(1.01);
  }
  to {
    transform: scale(1.06) translate3d(-18px, 10px, 0);
  }
}

@keyframes flowLine {
  0%,
  100% {
    opacity: 0.55;
    transform: rotate(-8deg) translateX(-2%);
  }
  50% {
    opacity: 1;
    transform: rotate(-8deg) translateX(2%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1040px) {
  h1 {
    font-size: 58px;
  }

  h2 {
    font-size: 38px;
  }

  .manifesto-grid,
  .plans-head {
    grid-template-columns: 80px 1fr;
  }

  .manifesto-note {
    grid-column: 2;
  }

  .story-band {
    grid-template-columns: 80px 0.9fr 1.1fr;
  }

  .plan-row {
    grid-template-columns: 0.85fr 1fr 0.68fr auto;
  }

  .plan-device {
    display: none;
  }

  .download-layout {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .download-workspace {
    padding-right: 48px;
    padding-left: 48px;
  }

  .workspace-head,
  .workspace-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .section-shell {
    width: min(100% - 28px, 1280px);
  }

  .header-inner {
    flex-wrap: wrap;
    align-items: flex-start;
    padding: 13px 0;
  }

  .header-action {
    display: none;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  h1 {
    font-size: 43px;
  }

  h2 {
    font-size: 30px;
  }

  .cover-inner {
    min-height: auto;
    padding-top: 54px;
  }

  .route-stage {
    min-height: 240px;
    margin-top: 48px;
  }

  .cover-foot {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cover-foot div:nth-child(2) {
    border-right: 0;
  }

  .cover-foot div:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .manifesto,
  .network-wall,
  .plans {
    padding: 76px 0;
  }

  .manifesto-grid,
  .plans-head,
  .story-band {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .manifesto-note {
    grid-column: auto;
    padding-left: 0;
  }

  .story-band {
    min-height: 350px;
    padding: 42px 0;
  }

  .network-panel {
    min-height: 600px;
  }

  .network-panel-copy {
    padding: 28px;
  }

  .network-ledger {
    right: 20px;
    bottom: 20px;
    left: 20px;
    grid-template-columns: 1fr;
    width: auto;
  }

  .plan-row,
  .directory-head,
  .client-entry {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .plan-row {
    padding: 20px 18px;
  }

  .plan-row > *:first-child,
  .plan-row > *:last-child {
    padding: 0;
  }

  .plan-device {
    display: block;
  }

  .directory-head {
    display: none;
  }

  .download-layout {
    display: block;
  }

  .download-rail {
    position: relative;
    top: auto;
    height: auto;
    padding: 32px 20px;
  }

  .rail-mark,
  .rail-title {
    margin-bottom: 20px;
  }

  .rail-status {
    position: static;
    margin-top: 24px;
  }

  .download-workspace {
    padding: 52px 20px 70px;
  }

  .client-entry {
    min-height: 0;
    padding: 20px 0;
  }

  .download-button {
    width: 100%;
  }

  .workspace-footer,
  .install-steps {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}