:root {
  --background: #000212;
  --off-white: #f7f8f8;
  --primary-text: #b4bcd0;
  --gray: #858699;
  --dark-gray: #1e2133;
  --transparent-white: rgba(255, 255, 255, 0.08);
  --transparent-strong: rgba(255, 255, 255, 0.16);
  --navigation-height: 4.8rem;
  --radius: 1.2rem;
  --font-sans: "SF Pro Display", "SF Pro Text", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--off-white);
  font-size: 1.6rem;
  line-height: 1.5;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(120, 119, 198, 0.3), transparent),
    linear-gradient(180deg, #000212 0%, #02041a 100%);
}

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

.container {
  width: min(120rem, calc(100% - 3.2rem));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid var(--transparent-white);
  backdrop-filter: blur(12px);
  background: rgba(0, 2, 18, 0.7);
}

.nav {
  min-height: var(--navigation-height);
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

.brand {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links {
  margin-left: 3.2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--gray);
  font-size: 1.4rem;
  transition: color 180ms ease;
}

.nav-links a:hover {
  color: var(--off-white);
}

.nav-cta {
  margin-left: auto;
  height: 3.4rem;
  padding: 0 1.6rem;
  border-radius: 999px;
  border: 1px solid var(--transparent-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary-text);
  background: rgba(255, 255, 255, 0.04);
  transition: background 180ms ease, color 180ms ease;
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--off-white);
}

main {
  padding-top: var(--navigation-height);
}

.hero {
  padding: 8.8rem 0 11rem;
  text-align: center;
}

.hero-inner {
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  height: 2.8rem;
  padding: 0 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--transparent-white);
  font-size: 1.3rem;
  color: var(--primary-text);
  background: rgba(255, 255, 255, 0.05);
}

.hero-title {
  margin-top: 2.6rem;
  font-size: clamp(4.2rem, 8vw, 8rem);
  font-weight: 550;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.hero-title-gradient {
  display: block;
  background: linear-gradient(to right bottom, #ffffff 26%, rgba(255, 255, 255, 0.36));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 2.2rem auto 0;
  max-width: 74rem;
  font-size: 2rem;
  color: var(--primary-text);
}

.hero-actions {
  margin-top: 3.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.install-command-line {
  min-height: 4.8rem;
  padding: 0.7rem 1.5rem;
  border: 1px solid var(--transparent-white);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  display: inline-flex;
  align-items: center;
}

.install-command-line code {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: #9d9bf2;
}

.btn {
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  height: 4.8rem;
  padding: 0 2.4rem;
  font-size: 1.6rem;
  color: #fff;
  background: linear-gradient(92.88deg, rgb(69, 94, 181) 9.16%, rgb(86, 67, 204) 43.89%, rgb(103, 63, 215) 64.72%);
  box-shadow: rgb(80 63 205 / 50%) 0 1px 40px;
  transition: box-shadow 180ms ease, text-shadow 180ms ease;
}

.btn-primary:hover {
  text-shadow: rgb(0 0 0 / 56%) 0 3px 12px;
}

.token-note {
  margin-top: 1.8rem;
  color: var(--primary-text);
  font-size: 1.4rem;
}

.terminal-shell {
  margin: 8rem auto 0;
  max-width: 92rem;
  border-radius: var(--radius);
  border: 1px solid var(--transparent-white);
  background:
    radial-gradient(ellipse 55% 120% at 15% 0%, rgba(93, 52, 221, 0.12), transparent),
    radial-gradient(ellipse 55% 120% at 85% 0%, rgba(120, 119, 198, 0.12), transparent),
    rgba(255, 255, 255, 0.02);
  overflow: hidden;
  transform: perspective(1800px) rotateX(10deg);
}

.terminal-bar {
  height: 4.4rem;
  border-bottom: 1px solid var(--transparent-white);
  display: flex;
  align-items: center;
  padding: 0 1.6rem;
  gap: 0.8rem;
}

.terminal-dot {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
}

.terminal-dot.red {
  background: #ff5f57;
}

.terminal-dot.yellow {
  background: #febc2e;
}

.terminal-dot.green {
  background: #28c840;
}

.terminal-name {
  margin-left: auto;
  color: var(--gray);
  font-size: 1.3rem;
}

.terminal-body {
  padding: 2rem 2.2rem 2.6rem;
  min-height: 20rem;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  line-height: 1.8;
  text-align: left;
}

.term-line {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.term-prompt {
  color: #9d9bf2;
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.term-command {
  color: #f7f8f8;
}

.term-output {
  color: #8dffdd;
  padding-left: 2.1rem;
}

.term-cursor {
  display: inline-block;
  width: 0.85rem;
  height: 1.6rem;
  background: #f7f8f8;
  opacity: 1;
}

.section {
  border-top: 1px solid var(--transparent-white);
  padding: 7.2rem 0;
}

.section-title {
  margin-top: 0;
  font-size: clamp(3rem, 5.4vw, 4.8rem);
  font-weight: 550;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-align: center;
}

.section-intro {
  width: min(78rem, calc(100% - 2rem));
  margin: 1.6rem auto 0;
  text-align: center;
  color: var(--primary-text);
  font-size: 1.8rem;
  line-height: 1.7;
}

.card-grid {
  margin-top: 3rem;
  display: grid;
  gap: 1.2rem;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card {
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  padding: 2rem;
}

.card h3 {
  font-size: 1.9rem;
  letter-spacing: -0.01em;
}

.card p {
  margin-top: 0.9rem;
  font-size: 1.5rem;
  color: var(--primary-text);
}

.card code {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: #9d9bf2;
}

.usecase-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.usecase-card {
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  padding: 2.2rem;
  min-height: 24.8rem;
  display: flex;
  flex-direction: column;
}

.usecase-card h3 {
  margin-top: 0;
  font-size: 2.2rem;
  letter-spacing: -0.02em;
}

.usecase-card p {
  margin-top: 0.8rem;
  color: var(--primary-text);
  font-size: 1.5rem;
  line-height: 1.68;
}

.usecase-card code {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: #9d9bf2;
}

.usecase-card .cli-hint {
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--transparent-white);
  font-size: 1.35rem;
  color: #d5dcf2;
}

.usecase-card .cli-hint span {
  color: #aeb7d1;
  margin-right: 0.6rem;
}

.docs-grid {
  align-items: start;
}

.ai-grid {
  align-items: stretch;
}

.ai-card {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.ai-card .code-block {
  margin-top: auto;
}

.ai-points {
  margin-top: 0.2rem;
  padding-left: 1.8rem;
  color: var(--primary-text);
}

.ai-points li + li {
  margin-top: 0.8rem;
}

.code-card h3 {
  margin-bottom: 1.2rem;
}

.code-block {
  border: 1px solid var(--transparent-white);
  border-radius: 1rem;
  background: rgba(2, 6, 24, 0.82);
  overflow: hidden;
}

.code-block + .code-block {
  margin-top: 1rem;
}

.code-head {
  height: 4.2rem;
  padding: 0 1.4rem;
  border-bottom: 1px solid var(--transparent-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
}

.code-copy {
  border: 1px solid var(--transparent-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--primary-text);
  border-radius: 999px;
  height: 2.7rem;
  padding: 0 1rem;
  font-size: 1.2rem;
  cursor: pointer;
}

.code-copy:hover {
  color: var(--off-white);
  border-color: rgba(255, 255, 255, 0.26);
}

.code-block pre {
  overflow-x: auto;
  padding: 1.4rem;
}

.code-block code {
  font-size: 1.32rem;
  line-height: 1.8;
  color: #dfe4f6;
}

.why-copy {
  margin: 3rem auto 0;
  max-width: 94rem;
  color: var(--primary-text);
  font-size: 1.65rem;
  line-height: 1.7;
}

.why-copy p + p {
  margin-top: 1.2rem;
}

.why-feature-grid {
  margin-top: 2.4rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.why-feature {
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  padding: 2rem;
}

.why-feature h2 {
  font-size: 2.2rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.why-feature p {
  margin-top: 0.8rem;
  color: var(--primary-text);
  font-size: 1.5rem;
  line-height: 1.7;
}

.why-feature code {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: #9d9bf2;
}

.why-closing {
  margin-top: 1.4rem;
  text-align: center;
  color: #d1d9f0;
  font-size: 1.8rem;
}

.faq-list {
  margin-top: 1.2rem;
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.faq-item + .faq-item {
  border-top: 1px solid var(--transparent-white);
}

.faq-question {
  width: 100%;
  min-height: 5.4rem;
  border: none;
  background: transparent;
  padding: 0 2rem;
  color: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.6rem;
  text-align: left;
  cursor: pointer;
}

.faq-plus {
  font-size: 2rem;
  color: #9d9bf2;
  transition: transform 160ms ease;
  margin-left: 1.2rem;
  flex-shrink: 0;
}

.faq-question-text {
  flex: 1;
}

.faq-item.open .faq-plus {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 2rem;
  color: var(--primary-text);
  font-size: 1.5rem;
  transition: max-height 220ms ease, padding 220ms ease;
}

.faq-item.open .faq-answer {
  max-height: 18rem;
  padding: 0 2rem 1.8rem;
}

.site-footer {
  border-top: 1px solid var(--transparent-white);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--gray);
  font-size: 1.4rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.footer-links a:hover {
  color: var(--off-white);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 2.4rem;
  transform: translate(-50%, 1.1rem);
  opacity: 0;
  pointer-events: none;
  border: 1px solid var(--transparent-strong);
  background: rgba(0, 2, 18, 0.92);
  color: var(--off-white);
  border-radius: 999px;
  padding: 0.8rem 1.3rem;
  font-size: 1.3rem;
  transition: transform 160ms ease, opacity 160ms ease;
  z-index: 80;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* doc page */
.doc-page {
  width: min(88rem, calc(100% - 3.2rem));
  margin: 4rem auto 8rem;
}

.doc-meta {
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  background: rgba(255, 255, 255, 0.03);
}

.doc-id {
  color: var(--primary-text);
  font-family: var(--font-mono);
  font-size: 1.3rem;
}

.doc-actions {
  display: flex;
  gap: 0.8rem;
}

.btn-action {
  border: 1px solid var(--transparent-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--primary-text);
  font-size: 1.3rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
}

.doc-content {
  margin-top: 1rem;
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  padding: 2.1rem;
  background: rgba(255, 255, 255, 0.03);
}

.markdown-body {
  color: #dfe4f6;
  line-height: 1.7;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin: 1.5rem 0 0.8rem;
  letter-spacing: -0.02em;
  color: #f7f8f8;
}

.markdown-body h1 {
  font-size: 3rem;
}

.markdown-body h2 {
  font-size: 2.3rem;
  border-bottom: 1px solid var(--transparent-white);
  padding-bottom: 0.5rem;
}

.markdown-body h3 {
  font-size: 1.9rem;
}

.markdown-body p {
  margin: 0.8rem 0;
}

.markdown-body a {
  color: #9d9bf2;
}

.markdown-body ul,
.markdown-body ol {
  margin: 0.8rem 0;
  padding-left: 1.9rem;
}

.markdown-body pre {
  border: 1px solid var(--transparent-white);
  border-radius: 1rem;
  background: rgba(2, 6, 24, 0.82);
  overflow-x: auto;
  padding: 1.2rem;
  margin: 1rem 0;
}

.markdown-body pre code {
  color: #e9ecf8;
  font-size: 1.3rem;
}

.markdown-body code {
  font-family: var(--font-mono);
  color: #9d9bf2;
  background: rgba(157, 155, 242, 0.12);
  border-radius: 0.5rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.9em;
}

.markdown-body blockquote {
  border-left: 3px solid #9d9bf2;
  padding-left: 1rem;
  color: var(--primary-text);
  margin: 1rem 0;
}

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--transparent-white);
  padding: 0.7rem 0.9rem;
  text-align: left;
}

.markdown-body th {
  background: rgba(255, 255, 255, 0.05);
}

.error-page {
  width: min(72rem, calc(100% - 3.2rem));
  margin: 8rem auto;
  text-align: center;
  border: 1px solid var(--transparent-white);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  padding: 4rem 2rem;
}

.error-code {
  font-size: 8rem;
  line-height: 1;
  letter-spacing: -0.03em;
}

.error-page h2 {
  margin-top: 1rem;
  font-size: 2.8rem;
}

.error-page p {
  margin-top: 0.8rem;
  color: var(--primary-text);
}

.btn-home {
  margin-top: 1.6rem;
  display: inline-flex;
  align-items: center;
  height: 4rem;
  padding: 0 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--transparent-strong);
  color: var(--off-white);
}

@media (max-width: 1024px) {
  .card-grid.three {
    grid-template-columns: 1fr;
  }

  .why-feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .nav {
    flex-wrap: wrap;
    padding: 0.8rem 0;
    min-height: auto;
  }

  .nav-links {
    margin-left: 0;
    width: 100%;
    order: 3;
    gap: 1.4rem;
  }

  .nav-cta {
    margin-left: auto;
  }

  main {
    padding-top: 9rem;
  }

  .hero {
    padding-top: 6.2rem;
  }

  .hero-subtitle {
    font-size: 1.7rem;
  }

  .terminal-shell {
    transform: none;
    margin-top: 4.2rem;
  }

  .card-grid.two,
  .card-grid.four {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .doc-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}