:root {
  --bg: #050706;
  --bg-2: #0a0f0d;
  --card: rgba(12, 20, 17, 0.78);
  --green: #00e676;
  --green-2: #15ff9a;
  --text: #e7f7ef;
  --muted: #9bb6aa;
  --border: rgba(21, 255, 154, 0.12);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #0b1210 0%, var(--bg) 60%);
  line-height: 1.65;
  overflow-x: hidden;
}

html {
  overflow-x: hidden;
}
.hero,
.section,
.panel,
.hero-visual,
.hero-image,
.metrics-grid,
.defense-grid,
.split {
  max-width: 100%;
}

img {
  max-width: 100%;
  height: auto;
}

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

.bg-glow {
  position: fixed;
  inset: 0;
  background: radial-gradient(
      circle at 15% 20%,
      rgba(0, 230, 118, 0.12),
      transparent 55%
    ),
    radial-gradient(
      circle at 80% 0%,
      rgba(0, 230, 118, 0.08),
      transparent 60%
    );
  pointer-events: none;
  z-index: -1;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 8vw;
  background: rgba(3, 6, 5, 0.9);
  border-bottom: 1px solid rgba(0, 230, 118, 0.1);
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid rgba(0, 230, 118, 0.2);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

.links {
  display: flex;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
  flex-wrap: wrap;
  align-items: center;
}

.nav-cta-link {
  margin-left: 6px;
}

.links a:hover {
  color: var(--green-2);
}

.cta {
  background: linear-gradient(135deg, var(--green), var(--green-2));
  color: #03110a;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  border: none;
  box-shadow: 0 8px 25px rgba(0, 230, 118, 0.35);
  cursor: pointer;
  white-space: nowrap;
}

.ghost {
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 999px;
  color: var(--text);
}

main {
  padding: 64px 8vw 80px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  padding: 80px 0 40px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.1;
  margin: 8px 0 8px;
}

.hero h2 {
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.2;
  margin: 6px 0 12px;
}

.hero .accent {
  color: var(--green-2);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--green-2);
  font-weight: 600;
}

.focus .eyebrow {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 230, 118, 0.08);
}

.lead {
  color: var(--muted);
  font-size: 16px;
  margin: 0 0 10px;
}

.lead + .lead {
  margin-top: 6px;
}

.slogan-title {
  color: var(--text);
  font-weight: 700;
}

.lang {
  display: none;
}

body[data-lang="zh"] .lang-zh {
  display: inline;
}

body[data-lang="en"] .lang-en {
  display: inline;
}

.lang-toggle {
  display: flex;
  gap: 6px;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.35);
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn.active {
  background: linear-gradient(135deg, var(--green), var(--green-2));
  color: #03110a;
  font-weight: 700;
}

.subtitle {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--muted);
}

.subtitle-emphasis {
  color: var(--green-2);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.slogan-line {
  margin: 6px 0 12px;
  font-size: 14px;
  color: var(--green-2);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-title {
  color: var(--text);
  font-weight: 600;
}

.hero-title .lang-en,
.hero-title .lang-zh {
  opacity: 0.8;
}

.slogan-title .lang-en,
.slogan-title .lang-zh {
  font-size: clamp(24px, 3.0vw, 40px);
  letter-spacing: -0.01em;
}

.hero-title .lang-en,
.hero-title .lang-zh {
  font-size: clamp(16px, 2.0vw, 24px);
  letter-spacing: 0.01em;
}

.slogan-line {
  margin-top: 10px;
}


.hero-actions {
  display: flex;
  gap: 14px;
  margin: 24px 0;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badges span {
  padding: 0;
  border-radius: 0;
  border: none;
  background: transparent;
  font-size: 12px;
  color: var(--muted);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-image {
  max-width: 760px;
  width: min(760px, 94vw);
}

.hero-image img,
.panel img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.panel.image img {
  border: none;
  box-shadow: none;
  background: transparent;
  display: block;
}

.caption {
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
}

.trust {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  padding: 20px 0 60px;
}

.trust-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.trust-grid {
  display: grid;
  gap: 12px;
}

.chip {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(12, 20, 16, 0.6);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.video-section {
  margin: 64px 0 24px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.35);
}

.video-section h3 {
  margin: 0 0 12px;
  color: var(--green-2);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.video-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.video-grid video {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #000;
}

.video-caption {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.team-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.team-card h3 {
  margin: 0 0 10px;
  color: var(--green-2);
}

.team-card.highlight {
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.16), rgba(6, 10, 9, 0.85));
}

.tagline {
  margin-top: 12px;
  font-weight: 600;
  color: var(--text);
}

.section {
  padding: 60px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 10px 0;
  font-size: clamp(26px, 3vw, 40px);
}

.sub {
  color: var(--muted);
}

.defense-stack {
  display: grid;
  gap: 14px;
}

.defense-layer {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(
    135deg,
    rgba(0, 230, 118, 0.12),
    rgba(8, 13, 11, 0.85)
  );
  width: var(--w, 100%);
  margin: 0 auto;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  position: relative;
}

.layer-index {
  font-size: 20px;
  font-weight: 700;
  color: var(--green-2);
  border-right: 1px solid rgba(0, 230, 118, 0.2);
  padding-right: 12px;
}

.layer-body h4 {
  margin: 0 0 8px;
  font-size: 18px;
}

.layer-copy {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
}

.layer-soundbite {
  margin: 0;
  font-size: 13px;
  color: var(--text);
  border-left: 2px solid var(--green);
  padding-left: 10px;
}

.defense-note {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px dashed rgba(0, 230, 118, 0.25);
  color: var(--muted);
  background: rgba(0, 0, 0, 0.25);
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  align-items: stretch;
}

.panel {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  height: 100%;
}

.focus .panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(0, 230, 118, 0.08),
    rgba(6, 10, 9, 0.92)
  );
  border: 1px solid rgba(0, 230, 118, 0.2);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.kv-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.kv-header h2 {
  margin-bottom: 8px;
}

.kv-lead {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.kv-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.kv-card {
  padding: 10px;
  border-radius: 14px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.3);
}

.kv-card h4 {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--green-2);
}

.kv-card p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.kv-formula {
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px dashed rgba(0, 230, 118, 0.4);
  background: rgba(0, 230, 118, 0.08);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 11px;
  color: var(--green-2);
}

.kv-code {
  padding: 10px;
  border-radius: 14px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.45);
}

.kv-text p {
  margin: 6px 0;
  color: var(--muted);
  font-size: 13px;
}

.kv-text code {
  color: var(--green-2);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 12px;
}

.kv-code-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-2);
}

.kv-code-block {
  margin: 0;
  background: transparent;
  border: none;
  padding: 0;
  font-size: 11px;
  line-height: 1.45;
}

.kv-image-panel {
  display: flex;
  align-items: center;
  justify-content: center;
}

.kv-visual {
  display: grid;
  gap: 14px;
  width: min(720px, 100%);
}

.kv-image-card {
  width: 100%;
  padding: 0;
  border-radius: 16px;
  background: transparent;
  border: none;
  box-shadow: none;
  position: relative;
  overflow: hidden;
}


.kv-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.kv-stat {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.35);
}

.kv-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.kv-value {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--green-2);
  font-weight: 600;
}

.focus .panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), transparent);
  opacity: 0.8;
}

.panel.image {
  background: transparent;
  border: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-self: stretch;
  height: 100%;
}

.focus .panel.image {
  background: transparent;
  border: none;
  box-shadow: none;
}

.bullets {
  padding-left: 18px;
  color: var(--muted);
}

.focus .bullets li {
  margin-bottom: 6px;
}

.focus .bullets li::marker {
  color: var(--green-2);
}

.formula {
  margin: 16px 0;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(0, 230, 118, 0.08);
  border: 1px dashed rgba(0, 230, 118, 0.35);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 13px;
  color: var(--green-2);
}

.focus .formula {
  background: rgba(0, 230, 118, 0.12);
  border-style: solid;
}

.code-block {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(0, 230, 118, 0.2);
  color: var(--muted);
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  font-size: 12px;
  white-space: pre-wrap;
  overflow-x: auto;
  max-width: 100%;
}

.flow-diagram {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.35);
}

.flow-node {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 230, 118, 0.25);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 13px;
  text-align: center;
}

.flow-node.small {
  font-size: 12px;
}

.flow-arrow {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  position: relative;
}

.flow-arrow::after {
  content: "↓";
  display: block;
  color: var(--green-2);
  margin-top: 4px;
}

.flow-arrow:empty::after {
  content: "↓";
}

.flow-branch {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 10px;
}

.flow-col {
  display: grid;
  gap: 8px;
}

.flow-bridge {
  font-size: 12px;
  color: var(--muted);
  align-self: center;
  padding: 6px 8px;
  border: 1px dashed rgba(0, 230, 118, 0.25);
  border-radius: 10px;
}

@media (max-width: 860px) {
  .flow-branch {
    grid-template-columns: 1fr;
  }
  .flow-bridge {
    text-align: center;
  }
}



.focus .code-block {
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(0, 230, 118, 0.35);
}

.code-card {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.code-title {
  margin: 0 0 8px;
  color: var(--green-2);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag-grid span {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
}

.table {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.table-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(0, 230, 118, 0.12);
  color: var(--muted);
  font-size: 13px;
}

.table-row span {
  min-width: 0;
  word-break: break-word;
}

.table-row.header {
  background: rgba(0, 230, 118, 0.1);
  color: var(--text);
  font-weight: 600;
}

.table-row:last-child {
  border-bottom: none;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.metric {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
}

.cta-section {
  padding-bottom: 20px;
}

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.12), rgba(15, 23, 19, 0.9));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
}

.cta-emphasis {
  margin-top: 8px;
  font-weight: 600;
  color: var(--green-2);
}

.steps {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}

.steps ul {
  margin: 6px 0 0 16px;
}

.steps li {
  margin-bottom: 6px;
}

.steps li {
  margin-bottom: 6px;
}

.footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 8vw 40px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid rgba(0, 230, 118, 0.08);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.menu-toggle {
  display: none;
  width: 36px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid rgba(0, 230, 118, 0.2);
  background: rgba(0, 0, 0, 0.35);
  cursor: pointer;
  padding: 6px;
  gap: 4px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--green-2);
  border-radius: 2px;
}

@media (max-width: 860px) {
  .nav {
    flex-direction: row;
    gap: 8px;
  }
  .links {
    display: none;
  }
  .nav-cta-link {
    display: none;
  }
  .cta-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer {
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 640px) {
  .nav {
    align-items: center;
    padding: 10px 6vw;
  }
  .links {
    gap: 10px;
    font-size: 13px;
  }
  .cta {
    width: 100%;
    text-align: center;
  }
  main {
    padding: 0 6vw 60px;
  }
  .hero {
    padding: 50px 0 30px;
    gap: 28px;
  }
  .hero-actions {
    width: 100%;
  }
  .hero-actions .cta,
  .hero-actions .ghost {
    flex: 1 1 100%;
    text-align: center;
  }
  .hero-badges span {
    font-size: 11px;
  }
  .hero-image {
    width: 100%;
  }
  .section {
    padding: 44px 0;
  }
  .defense-layer {
    grid-template-columns: 1fr;
    width: 100%;
  }
  .layer-index {
    border-right: none;
    border-bottom: 1px solid rgba(0, 230, 118, 0.2);
    padding-bottom: 8px;
    padding-right: 0;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .panel {
    padding: 18px;
  }
  .table-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .cta-card {
    padding: 22px;
  }
}