:root {
  color-scheme: light dark;
  --page: #edf1ed;
  --surface: #f7f8f5;
  --surface-strong: #e2e9e3;
  --ink: #17201a;
  --muted: #536057;
  --line: #c8d0c9;
  --accent: #2f6d4f;
  --accent-strong: #22563d;
  --accent-soft: #d4e5da;
  --code: #15211a;
  --code-ink: #edf5ef;
  --shadow: 0 24px 70px rgb(35 63 46 / 14%);
  --radius: 16px;
  --max: 1180px;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #111713;
    --surface: #18201b;
    --surface-strong: #202c24;
    --ink: #edf3ee;
    --muted: #a8b5ab;
    --line: #36433a;
    --accent: #70b88e;
    --accent-strong: #8bc9a4;
    --accent-soft: #213c2c;
    --code: #0b100d;
    --code-ink: #edf5ef;
    --shadow: 0 24px 70px rgb(0 0 0 / 34%);
  }
}

:root[data-theme="dark"] {
  --page: #111713;
  --surface: #18201b;
  --surface-strong: #202c24;
  --ink: #edf3ee;
  --muted: #a8b5ab;
  --line: #36433a;
  --accent: #70b88e;
  --accent-strong: #8bc9a4;
  --accent-soft: #213c2c;
  --code: #0b100d;
  --code-ink: #edf5ef;
  --shadow: 0 24px 70px rgb(0 0 0 / 34%);
}

:root[data-theme="light"] {
  --page: #edf1ed;
  --surface: #f7f8f5;
  --surface-strong: #e2e9e3;
  --ink: #17201a;
  --muted: #536057;
  --line: #c8d0c9;
  --accent: #2f6d4f;
  --accent-strong: #22563d;
  --accent-soft: #d4e5da;
  --code: #15211a;
  --code-ink: #edf5ef;
  --shadow: 0 24px 70px rgb(35 63 46 / 14%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgb(47 109 79 / 3%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(47 109 79 / 3%) 1px, transparent 1px);
  background-size: 40px 40px;
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

h1,
h2,
h3,
p,
figure,
blockquote,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: -0.035em;
  line-height: 1.16;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(2.8rem, 6vw, 5.35rem);
  font-weight: 620;
}

h1 strong {
  display: block;
  color: var(--accent);
  font-weight: 760;
}

h2 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  font-weight: 680;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(1.3rem, 2.4vw, 2rem);
}

p {
  color: var(--muted);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--page);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.section-shell {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

section[id] {
  scroll-margin-top: 88px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 74%, transparent);
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 40px), var(--max));
  min-height: 72px;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  gap: 11px;
  align-items: center;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.brand small {
  color: var(--muted);
  font-size: 0.78em;
  font-weight: 520;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.site-nav {
  display: flex;
  gap: 26px;
  align-items: center;
  font-size: 0.91rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

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

.site-nav .nav-github {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
}

.menu-button {
  display: none;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(34px, 6vw, 84px);
  align-items: center;
  min-height: calc(100dvh - 72px);
  padding-block: 56px 72px;
}

.eyebrow,
.section-kicker {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero-lead {
  max-width: 520px;
  margin-bottom: 32px;
  color: var(--ink);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.65;
}

.hero-actions,
.final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(1px) scale(0.99);
}

.button-primary {
  background: var(--accent-strong);
  color: #f5faf6;
}

@media (prefers-color-scheme: dark) {
  .button-primary {
    background: var(--accent);
    color: #0b1a11;
  }
}

:root[data-theme="dark"] .button-primary {
  background: var(--accent);
  color: #0b1a11;
}

:root[data-theme="light"] .button-primary {
  background: var(--accent-strong);
  color: #f5faf6;
}

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.hero-visual {
  overflow: hidden;
  margin-bottom: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 2.35 / 1;
  object-fit: cover;
}

.host-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.host-line span {
  padding: 18px 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-align: center;
}

.manifesto,
.evidence-flow,
.product-proof,
.modes,
.use-cases,
.examples,
.install,
.faq {
  padding-block: clamp(88px, 12vw, 150px);
}

.manifesto {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.54fr);
  column-gap: 8vw;
  align-items: end;
}

.manifesto .section-kicker,
.manifesto h2 {
  grid-column: 1;
}

.manifesto-copy {
  grid-column: 1;
  max-width: 700px;
  margin-bottom: 0;
  font-size: 1.1rem;
}

.manifesto blockquote {
  grid-row: 1 / span 3;
  grid-column: 2;
  margin-bottom: 0;
  padding-left: 28px;
  border-left: 4px solid var(--accent);
  color: var(--ink);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 650;
  line-height: 1.45;
}

.section-heading {
  margin-bottom: clamp(40px, 6vw, 68px);
}

.section-heading h2 {
  margin-bottom: 0;
}

.evidence-map {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.evidence-map div {
  position: relative;
  min-height: 178px;
  padding: 24px 20px;
  border-right: 1px solid var(--line);
}

.evidence-map div:last-child {
  border-right: 0;
}

.evidence-map div:not(:last-child)::after {
  position: absolute;
  top: 30px;
  right: -8px;
  z-index: 1;
  width: 15px;
  height: 15px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  background: var(--surface);
  content: "";
  transform: rotate(45deg);
}

.evidence-map strong,
.evidence-map span {
  display: block;
}

.evidence-map strong {
  margin-bottom: 44px;
  color: var(--accent);
  font-size: 1.1rem;
}

.evidence-map span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.product-proof {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(38px, 7vw, 92px);
  align-items: center;
}

.proof-copy h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.proof-list {
  margin: 34px 0 0;
}

.proof-list div {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
}

.proof-list dt {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
}

.proof-list dd {
  margin-bottom: 0;
  color: var(--muted);
}

.screenshot-frame {
  margin-bottom: 0;
}

.screenshot-frame picture {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.screenshot-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.screenshot-frame figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.82rem;
}

.mode-layout {
  display: grid;
  grid-template-columns: 0.62fr 1.38fr;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.mode-tabs {
  display: flex;
  flex-direction: column;
  padding: 16px;
  border-right: 1px solid var(--line);
}

.mode-tabs button {
  display: flex;
  justify-content: space-between;
  padding: 17px 16px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  cursor: pointer;
}

.mode-tabs button:hover {
  color: var(--ink);
}

.mode-tabs button[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--ink);
  font-weight: 700;
}

.mode-tabs code {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.mode-panels {
  min-height: 390px;
  padding: clamp(36px, 6vw, 74px);
}

.mode-panels article[hidden] {
  display: none;
}

.mode-use {
  margin-bottom: 32px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.mode-panels h3 {
  max-width: 570px;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
}

.mode-panels article > p:last-of-type {
  max-width: 650px;
  font-size: 1.05rem;
}

.confidence-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 34px;
}

.confidence-grid span {
  padding: 11px 8px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

.case-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.9fr;
  grid-template-rows: auto auto;
  gap: 16px;
}

.case {
  min-height: 230px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.case p {
  max-width: 520px;
  margin-bottom: 0;
}

.case-wide {
  grid-column: span 2;
}

.case-image {
  grid-row: span 2;
  overflow: hidden;
  padding: 0;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-accent {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.example-list {
  border-top: 1px solid var(--line);
}

.example-list a {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  padding: 28px 8px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: padding 180ms ease, color 180ms ease;
}

.example-list a:hover {
  padding-inline: 18px;
  color: var(--accent);
}

.example-list span,
.example-list strong,
.example-list small {
  display: block;
}

.example-list strong {
  margin-bottom: 6px;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.example-list small {
  color: var(--muted);
  font-size: 0.9rem;
}

.example-list b {
  font-size: 0.86rem;
  white-space: nowrap;
}

.install-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 18px;
}

.install-grid article {
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.install-primary {
  background: var(--accent-soft);
}

.install-secondary {
  background: var(--surface);
}

.install-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.command-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin-top: 30px;
  padding: 14px;
  border-radius: 12px;
  background: var(--code);
  color: var(--code-ink);
}

.command-block code {
  overflow-x: auto;
  padding: 2px 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
}

.copy-button {
  padding: 9px 12px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 9px;
  background: transparent;
  color: var(--code-ink);
  font-size: 0.78rem;
  cursor: pointer;
}

.copy-button:hover {
  background: rgb(255 255 255 / 9%);
}

.copy-button:active {
  transform: translateY(1px);
}

.copy-status {
  min-height: 1.7em;
  margin: 14px 0 0;
  color: var(--accent);
  font-size: 0.85rem;
}

.limits {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8vw;
  padding-block: 56px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.limits h2 {
  margin-bottom: 0;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
}

.limits-copy p:last-child {
  margin-bottom: 0;
}

.faq-list {
  max-width: 900px;
  border-top: 1px solid var(--line);
}

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

.faq-list summary {
  position: relative;
  padding: 24px 46px 24px 0;
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 20px;
  right: 6px;
  color: var(--accent);
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list details p {
  max-width: 720px;
  padding-bottom: 24px;
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: end;
  margin-bottom: 90px;
  padding: clamp(36px, 6vw, 68px);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.final-cta h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
}

.final-actions {
  justify-content: flex-end;
}

.text-link {
  color: var(--ink);
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.not-found {
  display: flex;
  min-height: 100dvh;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-block: 72px;
}

.not-found h1 {
  max-width: 780px;
}

.not-found p:not(.section-kicker) {
  max-width: 620px;
  margin-bottom: 30px;
  font-size: 1.08rem;
}

.footer-inner {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: space-between;
  padding-block: 32px;
}

.footer-inner p {
  margin-bottom: 0;
}

.footer-inner strong,
.footer-inner span {
  display: block;
}

.footer-inner strong {
  color: var(--ink);
}

.footer-inner span {
  font-size: 0.86rem;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 0.86rem;
}

.footer-inner nav a {
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 620ms cubic-bezier(0.16, 1, 0.3, 1), transform 620ms cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 72px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .manifesto,
  .product-proof,
  .limits {
    grid-template-columns: 1fr;
  }

  .manifesto blockquote {
    grid-row: auto;
    grid-column: 1;
    margin-top: 48px;
  }

  .evidence-map {
    grid-template-columns: repeat(3, 1fr);
  }

  .evidence-map div:nth-child(3) {
    border-right: 0;
  }

  .evidence-map div:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }

  .evidence-map div:nth-child(3)::after {
    content: none;
  }

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

  .case-image {
    grid-row: auto;
  }

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

  .final-cta {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .final-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 760px) {
  html {
    scroll-padding-top: 72px;
  }

  .section-shell,
  .nav-shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .brand small {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    gap: 0;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a,
  .site-nav .nav-github {
    padding: 12px;
    border: 0;
  }

  .hero {
    gap: 42px;
    padding-block: 56px 64px;
  }

  h1 {
    font-size: clamp(2.55rem, 13vw, 4rem);
  }

  .hero-lead {
    font-size: 1.04rem;
  }

  .host-line {
    grid-template-columns: 1fr 1fr;
  }

  .host-line span:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .manifesto,
  .evidence-flow,
  .product-proof,
  .modes,
  .use-cases,
  .examples,
  .install,
  .faq {
    padding-block: 76px;
  }

  .evidence-map {
    grid-template-columns: 1fr 1fr;
  }

  .evidence-map div,
  .evidence-map div:nth-child(3) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .evidence-map div:nth-child(even) {
    border-right: 0;
  }

  .evidence-map div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .evidence-map div:nth-child(3)::after {
    content: "";
  }

  .evidence-map div:nth-child(even)::after {
    content: none;
  }

  .evidence-map strong {
    margin-bottom: 26px;
  }

  .mode-layout {
    grid-template-columns: 1fr;
  }

  .mode-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .mode-tabs button {
    gap: 12px;
  }

  .mode-panels {
    min-height: 410px;
    padding: 30px 24px;
  }

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

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

  .case-wide,
  .case-image {
    grid-column: auto;
  }

  .case-image {
    min-height: 260px;
  }

  .command-block {
    grid-template-columns: 1fr;
  }

  .command-block code {
    padding-bottom: 8px;
  }

  .copy-button {
    min-height: 42px;
  }

  .limits {
    gap: 26px;
    padding-block: 48px;
  }

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

@media (max-width: 420px) {
  .hero-actions,
  .hero-actions .button,
  .final-actions,
  .final-actions .button {
    width: 100%;
  }

  .mode-tabs {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}