:root {
  --blue: #315fea;
  --orange: #d46f44;
  --ink: #172033;
  --muted: #616b7c;
  --paper: #f7f8fc;
  --line: #dde2ec;
  --font:
    "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  color-scheme: light;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 30px;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
a,
button {
  touch-action: manipulation;
}
a:focus-visible,
button:focus-visible,
video:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
video {
  max-width: 100%;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
.wrap {
  width: min(1200px, calc(100% - 96px));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  top: -80px;
  left: 20px;
  padding: 12px 20px;
  background: var(--ink);
  color: white;
  z-index: 99;
}
.skip-link:focus {
  top: 10px;
}
.site-header {
  height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 23px;
  font-weight: 750;
  letter-spacing: -0.8px;
}
.brand-dot {
  color: var(--orange);
}
nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  font-weight: 600;
}
nav a {
  padding-block: 10px;
}
nav a:hover {
  color: var(--blue);
}
.nav-github {
  border: 1px solid #c9d0de;
  border-radius: 50px;
  padding: 10px 19px;
}
.nav-github span {
  margin-left: 12px;
}
.hero {
  padding-top: 42px;
}
.hero-topline,
.hero-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.eyebrow {
  font-size: 11px;
  letter-spacing: 1.8px;
  line-height: 1.7;
  font-weight: 700;
}
.status-dot {
  display: inline-block;
  vertical-align: 1px;
  width: 6px;
  height: 6px;
  background: var(--blue);
  border-radius: 50%;
  margin-right: 10px;
}
.edition {
  font-size: 10px;
  letter-spacing: 1.7px;
  color: var(--muted);
}
.hero-copy {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  align-items: end;
  gap: 50px;
  padding: 39px 0 58px;
}
h1 {
  font-size: clamp(64px, 6.5vw, 94px);
  line-height: 1.14;
  letter-spacing: -6px;
  font-weight: 650;
}
h1 > span {
  color: var(--blue);
}
.orange-period {
  color: var(--orange);
}
.hero-description {
  padding: 0 0 7px 28px;
}
.hero-description > p:first-child {
  font-size: 20px;
  line-height: 1.85;
  letter-spacing: 0.3px;
}
.actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 27px;
}
.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  font-size: 14px;
  font-weight: 650;
  padding: 15px 22px;
  border-radius: 5px;
  transition:
    transform 0.2s,
    background 0.2s;
}
.button:hover {
  transform: translateY(-2px);
  background: #214ed2;
}
.primary {
  background: var(--blue);
  color: white;
}
.text-link {
  font-size: 13px;
  font-weight: 650;
  display: inline-flex;
  align-items: center;
  gap: 17px;
  line-height: 1.7;
}
.text-link:hover {
  color: var(--blue);
}
.small-note {
  margin-top: 19px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.15px;
}
.studio-window {
  background: white;
  border: 1px solid #d3d9e5;
  border-radius: 11px;
  overflow: hidden;
  box-shadow: 0 18px 65px -28px #27374e44;
}
.window-bar {
  padding: 12px 19px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 8px;
  letter-spacing: 1.4px;
  background: #f0f2f6;
  color: #637082;
}
.window-dots {
  display: flex;
  gap: 5px;
  width: 120px;
}
.window-dots i {
  width: 6px;
  height: 6px;
  background: #c2c9d5;
  border-radius: 50%;
}
.window-local {
  width: 120px;
  text-align: right;
}
.studio-window > img {
  width: 100%;
}
.studio-window figcaption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  padding: 15px 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.studio-window figcaption b {
  font-weight: 600;
  color: var(--orange);
  margin-right: 10px;
}
.studio-window figcaption > span:last-child {
  font-size: 9px;
}
.hero-foot {
  font-size: 11px;
  letter-spacing: 0.3px;
  padding: 23px 0 12px;
  color: var(--muted);
}
.section-pad {
  padding-top: 110px;
  padding-bottom: 110px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 43px;
  gap: 36px;
}
.section-heading .eyebrow {
  color: var(--muted);
  margin-bottom: 18px;
}
h2 {
  font-size: clamp(32px, 3.2vw, 46px);
  line-height: 1.35;
  letter-spacing: -1.7px;
  font-weight: 600;
}
.section-heading > p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
  padding-bottom: 5px;
}
.work-section {
  background: #edf0f6;
  margin-top: 64px;
}
.film-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 25px;
}
.film-player {
  position: relative;
  aspect-ratio: 16/9;
  background: #172033;
  overflow: hidden;
  border-radius: 5px;
}
.film-player video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.film-index {
  position: absolute;
  top: 13px;
  left: 13px;
  background: #17203366;
  color: white;
  padding: 3px 7px;
  border-radius: 3px;
  font-size: 10px;
  pointer-events: none;
}
.film-meta {
  padding-top: 22px;
}
.film-meta > span {
  font-size: 10px;
  letter-spacing: 0.6px;
  color: #6a7384;
}
.film-meta h3 {
  font-size: 23px;
  line-height: 1.45;
  letter-spacing: -0.4px;
  font-weight: 600;
  margin-top: 12px;
  min-height: 67px;
}
.film-meta p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
  margin-top: 13px;
}
.gallery-link {
  margin-top: 36px;
  border-bottom: 1px solid #b3bdce;
  padding-bottom: 8px;
}
.feature-row {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 70px;
  align-items: center;
  padding: 52px 0;
  border-top: 1px solid var(--line);
}
.feature-copy h3 {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -1px;
  margin: 20px 0 17px;
}
.feature-copy p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 340px;
}
.feature-copy a {
  margin-top: 21px;
}
.step-number {
  color: var(--orange);
  font-size: 11px;
  letter-spacing: 1.2px;
  font-weight: 650;
}
.feature-image {
  background: #e9edf5;
  padding: 20px;
  border-radius: 8px;
  display: block;
  transition: background 0.2s;
}
.feature-image:hover {
  background: #dfe6f4;
}
.feature-image img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 5px 15px #1720330f;
}
.reversed {
  grid-template-columns: 1.25fr 0.75fr;
}
.reversed .feature-copy {
  grid-column: 2;
  grid-row: 1;
}
.reversed .feature-image {
  grid-column: 1;
  grid-row: 1;
}
.export-note {
  padding: 35px 0 0;
  display: flex;
  gap: 30px;
  align-items: center;
  border-top: 1px solid var(--line);
}
.export-symbol {
  width: 72px;
  min-width: 72px;
  height: 72px;
  border: 1px solid #c5cde0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 35px;
  color: var(--blue);
}
.export-note h3 {
  font-size: 23px;
  font-weight: 600;
  margin: 9px 0;
}
.export-note p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 630px;
}
.format-label {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.9;
  margin-left: auto;
  white-space: nowrap;
  letter-spacing: 0.6px;
}
.principles {
  background: var(--ink);
  color: #fff;
}
.principles-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 85px;
}
.principles .eyebrow {
  color: #aab7d8;
  margin-bottom: 21px;
}
.principle-list {
  display: grid;
  gap: 29px;
}
.principle-list > div {
  display: flex;
  gap: 23px;
  padding-bottom: 28px;
  border-bottom: 1px solid #ffffff26;
}
.principle-list > div:last-child {
  border: 0;
  padding: 0;
}
.principle-list > div > span {
  font-size: 11px;
  color: #cda58e;
  padding-top: 5px;
}
.principle-list h3 {
  font-size: 19px;
  font-weight: 500;
  margin-bottom: 11px;
}
.principle-list p {
  font-size: 13px;
  color: #c0c8d8;
  line-height: 1.9;
}
.start-heading {
  text-align: center;
}
.start-heading h2 {
  font-size: clamp(36px, 4.1vw, 58px);
  margin: 23px 0 19px;
}
.start-heading h2 span {
  color: var(--blue);
}
.start-heading > p:last-child {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
}
.start-grid {
  margin: 48px auto 0;
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 45px;
  max-width: 1000px;
}
.install-panel {
  background: white;
  border: 1px solid var(--line);
  border-radius: 7px;
  min-width: 0;
}
.install-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 21px;
  font-size: 12px;
  border-bottom: 1px solid var(--line);
}
.install-top button {
  border: none;
  background: transparent;
  font-size: 11px;
  color: var(--blue);
  padding: 8px;
  cursor: pointer;
}
.install-panel pre {
  padding: 21px;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 12px;
  line-height: 1.8;
  min-height: 81px;
}
.install-panel > p {
  padding: 0 21px 20px;
  font-size: 10px;
  line-height: 1.8;
  color: var(--muted);
}
.start-links {
  display: grid;
  align-content: center;
}
.start-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}
.start-links a:hover {
  color: var(--blue);
}
.start-note {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  margin-top: 29px;
  line-height: 1.9;
}
.footer {
  border-top: 1px solid var(--line);
  padding-block: 33px 28px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 22px;
  align-items: center;
}
.footer .brand {
  font-size: 20px;
}
.footer > p {
  font-size: 12px;
  color: var(--muted);
}
.footer > div {
  display: flex;
  gap: 21px;
  font-size: 11px;
}
.footer small {
  grid-column: 1/-1;
  font-size: 10px;
  color: var(--muted);
}
/* Published Markdown pages share the same quiet, readable frame. */
.document {
  width: min(840px, calc(100% - 48px));
  margin: 65px auto 90px;
  line-height: 1.9;
  font-size: 15px;
  overflow-wrap: anywhere;
}
.document h1 {
  font-size: 40px;
  line-height: 1.4;
  letter-spacing: -1.5px;
  margin: 22px 0 32px;
}
.document h2 {
  font-size: 27px;
  letter-spacing: -0.8px;
  margin: 36px 0 16px;
}
.document h3 {
  font-size: 21px;
  margin: 30px 0 13px;
}
.document p,
.document ul,
.document ol {
  margin-block: 14px;
}
.document a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.document pre {
  padding: 20px;
  background: #edf0f6;
  overflow: auto;
  border-radius: 5px;
  white-space: pre;
  font-size: 12px;
}
.document code {
  font-size: 0.88em;
}
.document blockquote {
  margin-left: 0;
  border-left: 3px solid var(--orange);
  padding-left: 20px;
  color: var(--muted);
}
.table-scroll {
  overflow: auto;
}
.document table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
}
.document td,
.document th {
  border: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
}
.document hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin-block: 32px;
}
.document img {
  margin: auto;
}
.document picture > img {
  width: 112px;
}
@media (min-width: 900px) {
  .hero-copy h1 {
    animation: arrive 0.6s both;
  }
  .hero-description {
    animation: arrive 0.7s 0.1s both;
  }
  .studio-window {
    animation: arrive 0.8s 0.15s both;
  }
}
@keyframes arrive {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@media (max-width: 900px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .site-header {
    height: 86px;
  }
  .hero-copy {
    gap: 22px;
    grid-template-columns: 1fr 1fr;
    padding-bottom: 42px;
  }
  h1 {
    font-size: 65px;
    letter-spacing: -4px;
  }
  .hero-description {
    padding: 0;
  }
  .hero-description > p:first-child {
    font-size: 16px;
  }
  .actions {
    gap: 16px;
    flex-wrap: wrap;
  }
  .button {
    gap: 20px;
  }
  .small-note {
    max-width: 270px;
    line-height: 1.8;
  }
  .film-grid {
    gap: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .film:last-child {
    display: none;
  }
  .section-pad {
    padding-block: 78px;
  }
  .work-section {
    margin-top: 42px;
  }
  .section-heading {
    gap: 24px;
  }
  .section-heading > p {
    font-size: 12px;
  }
  .feature-row {
    gap: 35px;
    grid-template-columns: 1fr 1fr;
    padding-block: 36px;
  }
  .feature-copy h3 {
    font-size: 25px;
  }
  .feature-copy p {
    font-size: 12px;
  }
  .feature-image {
    padding: 12px;
  }
  .principles-inner {
    gap: 40px;
  }
  .start-grid {
    gap: 28px;
    grid-template-columns: 1.2fr 1fr;
  }
  .footer {
    grid-template-columns: 1fr auto;
  }
  .footer > p {
    display: none;
  }
}
@media (max-width: 600px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    height: 78px;
  }
  .brand {
    font-size: 21px;
  }
  .brand img {
    width: 33px;
  }
  nav {
    gap: 19px;
    font-size: 12px;
  }
  nav > a:nth-child(2),
  .nav-github {
    display: none;
  }
  .hero {
    padding-top: 27px;
  }
  .edition {
    display: none;
  }
  .eyebrow {
    font-size: 10px;
  }
  .hero-copy {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 29px;
    padding-bottom: 35px;
  }
  h1 {
    font-size: 64px;
    line-height: 1.16;
    letter-spacing: -4px;
  }
  .hero-description > p:first-child {
    font-size: 16px;
    line-height: 1.85;
  }
  .actions {
    margin-top: 22px;
    gap: 21px;
  }
  .button {
    padding: 14px 19px;
    min-height: 48px;
  }
  .small-note {
    max-width: none;
    font-size: 9px;
    margin-top: 17px;
  }
  .window-bar {
    padding: 9px 10px;
    font-size: 6px;
    letter-spacing: 1px;
  }
  .window-local {
    display: none;
  }
  .window-dots {
    width: 45px;
    gap: 4px;
  }
  .window-dots i {
    width: 4px;
    height: 4px;
  }
  .window-bar > span:nth-child(2) {
    margin-right: auto;
    margin-left: auto;
    transform: translateX(-22px);
  }
  .studio-window {
    border-radius: 7px;
  }
  .studio-window figcaption {
    padding: 11px;
    font-size: 9px;
  }
  .studio-window figcaption > span:last-child {
    display: none;
  }
  .studio-window figcaption b {
    margin-right: 4px;
  }
  .hero-foot {
    font-size: 9px;
    padding-top: 18px;
  }
  .hero-foot span:last-child {
    display: none;
  }
  .section-pad {
    padding-block: 59px;
  }
  .work-section {
    margin-top: 27px;
  }
  .section-heading {
    display: block;
    margin-bottom: 28px;
  }
  .section-heading .eyebrow {
    margin-bottom: 15px;
  }
  h2 {
    font-size: 32px;
    letter-spacing: -1px;
  }
  .section-heading > p {
    margin-top: 17px;
    font-size: 12px;
  }
  .film-grid {
    grid-template-columns: 1fr;
    gap: 33px;
  }
  .film:last-child {
    display: block;
  }
  .film-meta {
    padding-top: 17px;
  }
  .film-meta h3 {
    font-size: 23px;
    min-height: 0;
    margin-top: 9px;
  }
  .film-meta h3 br {
    display: none;
  }
  .film-meta p {
    margin-top: 8px;
  }
  .gallery-link {
    font-size: 11px;
    gap: 12px;
    margin-top: 28px;
  }
  .feature-row,
  .reversed {
    display: flex;
    flex-direction: column;
    gap: 27px;
    padding-block: 32px;
    align-items: stretch;
  }
  .feature-copy h3 {
    font-size: 27px;
    margin-block: 14px;
  }
  .feature-copy p {
    max-width: none;
    font-size: 13px;
  }
  .feature-copy a {
    margin-top: 15px;
  }
  .feature-image {
    padding: 13px;
  }
  .export-note {
    align-items: start;
    gap: 16px;
    padding-top: 26px;
  }
  .export-symbol {
    width: 39px;
    height: 39px;
    min-width: 39px;
    font-size: 23px;
  }
  .export-note h3 {
    font-size: 22px;
    line-height: 1.5;
  }
  .export-note p {
    font-size: 12px;
  }
  .format-label {
    display: none;
  }
  .principles-inner {
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .principle-list {
    gap: 22px;
  }
  .principle-list > div {
    gap: 18px;
    padding-bottom: 22px;
  }
  .start-heading {
    text-align: left;
  }
  .start-heading h2 {
    font-size: 36px;
    margin-block: 19px;
  }
  .start-heading h2 span {
    display: block;
  }
  .start-heading > p:last-child {
    font-size: 13px;
  }
  .start-grid {
    grid-template-columns: 1fr;
    gap: 21px;
    margin-top: 29px;
  }
  .start-note {
    text-align: left;
    font-size: 10px;
  }
  .footer {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding-block: 25px;
  }
  .footer > div {
    width: 100%;
    gap: 24px;
    font-size: 11px;
  }
  .footer small {
    font-size: 9px;
    line-height: 1.8;
  }
  .document {
    margin-top: 35px;
    font-size: 14px;
  }
  .document h1 {
    font-size: 30px;
  }
  .document h2 {
    font-size: 23px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}