:root {
  --ink: #2d3748;
  --ink-70: rgba(45, 55, 72, 0.7);
  --blue: #2b6cb0;
  --blue-ink: rgba(43, 108, 176, 0.16);
  --grid: rgba(43, 108, 176, 0.12);
  --paper: #f7fafc;
  --paper-2: #ffffff;
  --radius: 14px;
  --shadow: 0 18px 40px rgba(45, 55, 72, 0.12);
  --mono: "Sarasa Mono SC", "JetBrains Mono", "Cascadia Mono", "Fira Code",
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  --sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    "Hiragino Sans GB", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background-color: var(--paper);
  background-image:
    radial-gradient(900px 420px at 18% 0%, rgba(43, 108, 176, 0.14), transparent 60%),
    radial-gradient(720px 380px at 85% 12%, rgba(45, 55, 72, 0.08), transparent 62%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(247, 250, 252, 0.98) 100%);
}

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

.container {
  width: min(1140px, calc(100% - 40px));
  margin: 0 auto;
}

.page-frame {
  position: fixed;
  inset: 18px;
  border: 1px solid rgba(43, 108, 176, 0.16);
  border-radius: 18px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.6) inset;
  pointer-events: none;
  z-index: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(247, 250, 252, 0.72);
  border-bottom: 1px solid rgba(43, 108, 176, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(43, 108, 176, 0.22);
  box-shadow: 0 10px 24px rgba(43, 108, 176, 0.12);
}

.brand-text {
  line-height: 1.1;
}

.brand-cn {
  font-size: 14px;
  letter-spacing: 0.06em;
}

.brand-en {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.06em;
  opacity: 0.9;
}

.nav {
  display: flex;
  gap: 18px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav a {
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 12px;
  opacity: 0.9;
}

.nav a:hover {
  border-color: rgba(43, 108, 176, 0.28);
  background: rgba(255, 255, 255, 0.55);
}

.hero {
  position: relative;
  padding: 58px 0 26px;
  z-index: 1;
}

.micro-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.micro {
  position: absolute;
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(45, 55, 72, 0.42);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.micro-1 {
  top: 40px;
  left: 8%;
}

.micro-2 {
  top: 86%;
  left: 14%;
}

.micro-3 {
  top: 22%;
  right: 10%;
}

.micro-4 {
  top: 76%;
  right: 8%;
}

.micro-5 {
  top: 56%;
  left: 62%;
}

.micro-6 {
  top: 12%;
  left: 46%;
}

.transition,
.features,
.cta,
.site-footer,
main {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 26px;
  align-items: center;
}

.hero-visual {
  position: relative;
  padding: 18px 18px 12px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(43, 108, 176, 0.22);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 0 0),
    radial-gradient(500px 260px at 70% 10%, rgba(43, 108, 176, 0.18), transparent 65%);
  opacity: 0.8;
  pointer-events: none;
}

.hero-visual-label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  opacity: 0.9;
  margin: 0;
  white-space: nowrap;
}

.hero-visual-labels {
  position: absolute;
  left: 16px;
  right: 16px;
  top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
}

.hero-visual-label-right {
  text-align: right;
}

.hero-svg {
  position: relative;
  width: 100%;
  height: auto;
  display: block;
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  border: 1px solid rgba(43, 108, 176, 0.16);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.svg-tag {
  font-family: var(--mono);
  font-size: 14px;
  fill: var(--blue);
  letter-spacing: 0.06em;
}

.svg-note {
  font-family: var(--mono);
  font-size: 14px;
  fill: rgba(45, 55, 72, 0.8);
  letter-spacing: 0.06em;
}

.svg-top {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 16px;
  fill: var(--blue);
  letter-spacing: 0.08em;
}

.hero-copy {
  padding: 10px 6px;
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 12px;
}

.headline {
  margin: 0;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(38px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.headline-split {
  color: var(--blue);
}

.subheadline {
  margin: 18px 0 18px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-70);
}

.sub-prefix {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--blue);
  margin-right: 8px;
}

.hero-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding-top: 10px;
}

.meta-item {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(43, 108, 176, 0.22);
  background: rgba(255, 255, 255, 0.55);
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.meta-k {
  display: inline-block;
  padding: 2px 6px;
  margin-right: 10px;
  border-radius: 10px;
  border: 1px solid rgba(43, 108, 176, 0.28);
  color: var(--blue);
}

.transition {
  margin-top: 22px;
}

.transition-a {
  position: relative;
  background: rgba(255, 255, 255, 0.64);
  border-top: 1px solid rgba(43, 108, 176, 0.38);
  border-bottom: 1px solid rgba(43, 108, 176, 0.38);
}

.transition-a::before,
.transition-a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(43, 108, 176, 0.26);
}

.transition-a::before {
  top: 4px;
}

.transition-a::after {
  bottom: 4px;
}

.transition-inner {
  padding: 26px 0;
  text-align: center;
}

.transition-en {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.transition-cn {
  margin-top: 8px;
  font-size: 14px;
  color: rgba(45, 55, 72, 0.7);
  letter-spacing: 0.04em;
}

.features {
  padding: 46px 0 22px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.feature-card {
  border-radius: var(--radius);
  border: 1px solid rgba(43, 108, 176, 0.22);
  background: rgba(255, 255, 255, 0.58);
  box-shadow: var(--shadow);
  padding: 22px;
}

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 8px 10px;
  border-radius: 12px;
}

.tag-solid {
  color: #fff;
  background: var(--blue);
}

.tag-outline {
  color: var(--blue);
  border: 1px solid rgba(43, 108, 176, 0.6);
  background: rgba(255, 255, 255, 0.25);
}

.feature-title {
  margin: 14px 0 10px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.feature-desc {
  margin: 0 0 16px;
  color: var(--ink-70);
  line-height: 1.75;
}

.code-line {
  font-family: var(--mono);
  color: rgba(45, 55, 72, 0.78);
}

.wireframe {
  border: 1px dashed rgba(43, 108, 176, 0.35);
  background: rgba(247, 250, 252, 0.55);
  border-radius: 14px;
  padding: 14px;
}

.wireframe-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(45, 55, 72, 0.68);
  margin-bottom: 10px;
}

.wire-svg {
  width: 100%;
  height: auto;
  display: block;
}

.config-pre {
  margin: 0;
  padding: 12px 12px 10px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(45, 55, 72, 0.86);
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(43, 108, 176, 0.2);
  border-radius: 12px;
  overflow: auto;
}

.cursor {
  display: inline-block;
  width: 10px;
  animation: blink 1.05s steps(2, end) infinite;
}

@keyframes blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.transition-b {
  padding: 28px 0;
  background: var(--paper-2);
  border-top: 1px solid rgba(43, 108, 176, 0.14);
  border-bottom: 1px solid rgba(43, 108, 176, 0.14);
}

.transition-b-inner {
  padding-left: 16px;
  border-left: 6px solid var(--blue);
}

.manifesto-en {
  font-family: var(--sans);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.35;
}

.manifesto-cn {
  margin-top: 6px;
  font-size: 16px;
  color: rgba(45, 55, 72, 0.72);
}

.cta {
  padding: 40px 0 66px;
}

.terminal {
  border-radius: var(--radius);
  border: 1px solid rgba(43, 108, 176, 0.22);
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
  padding: 24px;
}

.terminal-line {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: rgba(45, 55, 72, 0.85);
}

.terminal-line + .terminal-line {
  margin-top: 8px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 12px 16px;
  font-family: var(--sans);
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 14px;
  border: 2px solid var(--blue);
  color: var(--blue);
  background: transparent;
  transition: background-color 120ms ease, color 120ms ease, transform 120ms ease;
}

.cta-arrow {
  transition: transform 120ms ease;
}

.cta-btn:hover {
  background: var(--blue);
  color: #fff;
  transform: translateY(-1px);
}

.cta-btn:hover .cta-arrow {
  transform: translateX(5px);
}

.cta-note {
  margin-top: 10px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(45, 55, 72, 0.55);
}

.site-footer {
  padding: 18px 0 28px;
  border-top: 1px solid rgba(43, 108, 176, 0.18);
  background: rgba(247, 250, 252, 0.65);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(45, 55, 72, 0.68);
}

.footer-legal {
  margin-top: 6px;
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(45, 55, 72, 0.7);
}

.footer-legal .dot {
  color: rgba(45, 55, 72, 0.35);
}

.footer-link {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 108, 176, 0.28);
  padding-bottom: 2px;
}

.footer-link:hover {
  color: #1d4f82;
  border-color: rgba(43, 108, 176, 0.45);
}

.about-hero {
  padding: 70px 0 26px;
}

.about-tag {
  font-family: var(--sans);
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--blue);
  margin-bottom: 10px;
}

.about-title {
  margin: 0;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 46px);
  letter-spacing: -0.02em;
}

.about-lead {
  margin: 14px 0 14px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-70);
  max-width: 760px;
}

.about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(45, 55, 72, 0.72);
}

.about-section {
  padding: 28px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.about-card {
  border: 1px solid rgba(43, 108, 176, 0.2);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.6);
  padding: 18px;
  box-shadow: var(--shadow);
}

.about-label {
  display: inline-block;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue);
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid rgba(43, 108, 176, 0.35);
  margin-bottom: 10px;
}

.about-card h2 {
  margin: 6px 0 8px;
  font-size: 22px;
}

.about-card p {
  margin: 0 0 10px;
  line-height: 1.7;
  color: var(--ink-70);
}

.about-list {
  padding-left: 18px;
  margin: 4px 0 0;
  color: var(--ink-70);
  line-height: 1.6;
}

.about-team-title {
  margin: 8px 0 14px;
  font-size: 24px;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.team-card {
  border: 1px solid rgba(43, 108, 176, 0.2);
  border-radius: 12px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow);
}

.team-card h3 {
  margin: 4px 0 8px;
  font-size: 18px;
}

.team-card p {
  margin: 0;
  color: var(--ink-70);
  line-height: 1.6;
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .nav {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
  .cta-btn,
  .cta-arrow {
    transition: none;
  }
}