:root {
  --ink: #121316;
  --muted: #5d6472;
  --paper: #fffaf1;
  --white: #ffffff;
  --line: rgba(18, 19, 22, 0.12);
  --violet: #6d38ff;
  --pink: #ff4ea3;
  --orange: #ff8b2b;
  --green: #00b894;
  --blue: #0877ff;
  --yellow: #ffd84d;
  --shadow: 0 24px 70px rgba(18, 19, 22, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(255, 216, 77, 0.45), transparent 28%),
    linear-gradient(225deg, rgba(109, 56, 255, 0.18), transparent 35%),
    var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
}

button {
  font: inherit;
  cursor: pointer;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(255, 250, 241, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 900;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 6px 6px 0 var(--yellow);
  font-size: 13px;
  letter-spacing: 0;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.main-nav a {
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--ink);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 5px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 78px;
  height: 34px;
  padding: 0 12px;
  color: #fff;
  background: var(--ink);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 950;
  text-decoration: none;
}

.github-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

.github-link:hover {
  background: var(--violet);
}

.language-toggle {
  min-width: 44px;
  height: 34px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  font-weight: 900;
}

.language-toggle.active {
  color: #fff;
  background: var(--ink);
}

.hero,
.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 76px clamp(18px, 4vw, 32px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.86fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 78px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--violet);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6.8vw, 86px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  max-width: 820px;
  margin-bottom: 0;
  font-size: clamp(32px, 4.8vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

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

.hero-text {
  max-width: 680px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.7;
}

.hero-actions,
.metric-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-actions a,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 950;
  text-decoration: none;
}

.hero-actions a {
  min-width: 148px;
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 rgba(18, 19, 22, 0.18);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

.hero-actions a:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(18, 19, 22, 0.18);
}

.hero-actions a:active {
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(18, 19, 22, 0.18);
}

.hero-actions .primary-link {
  color: #fff;
  background: var(--ink);
  box-shadow: 5px 5px 0 var(--pink);
}

.hero-actions .primary-link:hover {
  box-shadow: 7px 7px 0 var(--pink);
}

.hero-actions .primary-link:active {
  box-shadow: 3px 3px 0 var(--pink);
}

.secondary-link,
.copy-button {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
}

.hero-actions .secondary-link {
  border: 2px solid var(--ink);
}

.hero-actions .secondary-link[href="#cli"] {
  box-shadow: 5px 5px 0 var(--green);
}

.hero-actions .secondary-link[href="#cli"]:hover {
  box-shadow: 7px 7px 0 var(--green);
}

.hero-actions .secondary-link[href="#cli"]:active {
  box-shadow: 3px 3px 0 var(--green);
}

.metric-row {
  gap: 28px;
  margin-top: 42px;
}

.metric-row div {
  display: grid;
  gap: 2px;
}

.metric-row strong {
  font-size: 32px;
}

.metric-row span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  padding: 18px;
  background: #111318;
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: 18px 18px 0 var(--violet);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

.visual-topline,
.visual-footer,
.package-map {
  position: relative;
}

.visual-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  color: #daf7ff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}

.visual-topline button {
  color: var(--ink);
  background: var(--yellow);
  border: 0;
  border-radius: 6px;
  font-weight: 900;
}

.visual-actions {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 8px;
}

.visual-actions a,
.visual-actions button {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 9px;
  text-decoration: none;
  font-size: 12px;
  line-height: 1;
}

.visual-actions a {
  color: #fff;
  background: var(--violet);
  border-radius: 6px;
  box-shadow: 4px 4px 0 var(--pink);
  font-weight: 900;
}

.package-map {
  display: grid;
  grid-template-columns: 1fr 44px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 330px;
}

.map-column {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 8px;
}

.core-column {
  background: #e9ff6a;
}

.adapter-column {
  background: #65e3ff;
}

.map-label {
  width: fit-content;
  max-width: 100%;
  padding: 5px 8px;
  color: #fff;
  background: var(--ink);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 950;
  line-height: 1.3;
}

.map-column strong {
  padding: 11px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(18, 19, 22, 0.16);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.35;
}

.connector {
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--pink), var(--pink) 8px, transparent 8px, transparent 15px);
}

.visual-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.visual-footer span {
  padding: 7px 9px;
  color: #fff;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 850;
}

.strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding-top: 16px;
}

.strip-item,
.pack-card,
.platform-card,
.structure-card,
.cli-copy {
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 8px 8px 0 rgba(18, 19, 22, 0.14);
}

.strip-item {
  min-height: 166px;
  padding: 18px;
}

.strip-index {
  display: block;
  margin-bottom: 18px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 950;
}

.strip-item strong {
  display: block;
  font-size: 21px;
}

.strip-item p,
.pack-card p,
.pack-card li,
.platform-card span,
.structure-card p,
.cli-copy p {
  color: var(--muted);
  line-height: 1.65;
}

.section-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.pack-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pack-card {
  min-height: 420px;
  padding: 22px;
}

.card-green {
  background: #dffb64;
}

.card-pink {
  background: #ffd7ed;
}

.card-blue {
  background: #d6f4ff;
}

.card-chip {
  width: fit-content;
  margin-bottom: 22px;
  padding: 7px 10px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 950;
}

.pack-card h3 {
  margin-bottom: 12px;
  font-size: 27px;
}

.pack-card ul {
  margin: 22px 0 0;
  padding-left: 18px;
}

.platform-section {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  max-width: none;
}

.platform-section > * {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

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

.platform-card {
  display: grid;
  gap: 10px;
  min-height: 150px;
  padding: 18px;
}

.platform-card strong {
  font-size: 20px;
}

.cli-layout,
.prompt-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 18px;
  align-items: stretch;
}

.prompt-layout {
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
}

.prompt-steps {
  display: grid;
  gap: 14px;
}

.prompt-steps div {
  min-height: 132px;
  padding: 18px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 8px 8px 0 rgba(18, 19, 22, 0.14);
}

.prompt-steps span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 950;
}

.prompt-steps strong {
  display: block;
  font-size: 20px;
}

.prompt-steps p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.prompt-terminal {
  box-shadow: 12px 12px 0 var(--orange);
}

.terminal {
  position: relative;
  overflow: hidden;
  background: #111318;
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: 12px 12px 0 var(--green);
}

.terminal-copy {
  position: absolute;
  right: 14px;
  bottom: 14px;
  min-height: 36px;
  padding: 0 12px;
  color: var(--ink);
  background: var(--yellow);
  border: 0;
  border-radius: 7px;
  font-weight: 950;
}

.terminal-bar {
  display: flex;
  gap: 7px;
  padding: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.terminal-bar span {
  width: 12px;
  height: 12px;
  border-radius: 6px;
  background: var(--pink);
}

.terminal-bar span:nth-child(2) {
  background: var(--yellow);
}

.terminal-bar span:nth-child(3) {
  background: var(--green);
}

pre {
  margin: 0;
  padding: 22px;
  color: #e9ff6a;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 15px;
  line-height: 1.8;
}

.cli-copy {
  padding: 22px;
}

.copy-button {
  margin-top: 14px;
}

.structure-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.structure-card {
  min-height: 180px;
  padding: 18px;
}

.structure-card span {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--violet);
  font-size: 20px;
  font-weight: 950;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(18px, 4vw, 56px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 950;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  transform: translateY(16px);
  opacity: 0;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  pointer-events: none;
  transition: 180ms ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .cli-layout,
  .prompt-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .strip,
  .pack-grid,
  .platform-grid,
  .structure-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .main-nav {
    justify-content: flex-start;
  }

  .header-actions {
    width: 100%;
  }

  .github-link {
    flex: 1 1 100%;
  }

  .language-toggle {
    flex: 1;
  }

  .hero,
  .section {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero-actions,
  .metric-row,
  .visual-topline,
  .site-footer {
    flex-direction: column;
  }

  .visual-actions {
    width: 100%;
  }

  .visual-actions a,
  .visual-actions button {
    justify-content: center;
    flex: 1;
  }

  .package-map,
  .strip,
  .pack-grid,
  .platform-grid,
  .structure-grid {
    grid-template-columns: 1fr;
  }

  .connector {
    height: 36px;
    width: 8px;
    justify-self: center;
    background: repeating-linear-gradient(180deg, var(--pink), var(--pink) 8px, transparent 8px, transparent 15px);
  }

  .hero-visual {
    box-shadow: 10px 10px 0 var(--violet);
  }
}