:root {
  --red: #c51d25;
  --ink: #171717;
  --muted: #646464;
  --line: #dedede;
  --paper: #f6f6f6;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang TC', 'Noto Sans TC', sans-serif;
  color: var(--ink);
  background: white;
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  line-height: 1.8;
}
a {
  color: inherit;
  text-underline-offset: 5px;
}
button {
  font: inherit;
  cursor: pointer;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 5px;
}
img {
  display: block;
  width: 100%;
  height: auto;
}
figure {
  margin: 0;
}
figcaption {
  color: var(--muted);
  font-size: 13px;
  margin-top: 14px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  line-height: 1.3;
  letter-spacing: -0.04em;
}
h1 {
  font-size: clamp(48px, 6.5vw, 90px);
  font-weight: 760;
  margin-bottom: 24px;
}
h2 {
  font-size: clamp(32px, 4vw, 52px);
  margin-bottom: 24px;
}
h3 {
  font-size: 23px;
  margin-bottom: 12px;
}
p {
  margin-bottom: 20px;
}
.wrap {
  width: min(1200px, calc(100% - 96px));
  margin-inline: auto;
}
.site-header {
  height: 96px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(1344px, calc(100% - 96px));
  margin: auto;
  border-bottom: 1px solid var(--line);
}
.site-header > a,
.site-footer a:has(.brand) {
  text-decoration: none;
}
.brand {
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -1.5px;
}
.brand > span {
  color: var(--red);
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.site-header nav a {
  font-size: 14px;
  text-decoration: none;
  font-weight: 600;
}
.site-header nav a:hover,
.site-header [aria-current] {
  color: var(--red);
}
.nav-download {
  border: 1px solid var(--line);
  padding: 9px 18px;
  border-radius: 6px;
}
.nav-download span {
  margin-left: 12px;
}
.skip {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 10;
  background: white;
  padding: 10px;
}
.skip:focus {
  top: 10px;
}
.hero {
  padding-block: 88px 84px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.intro {
  font-size: 14px;
  font-weight: 650;
  color: var(--muted);
  margin-bottom: 22px;
}
.lead {
  font-size: 18px;
  color: #505050;
  line-height: 1.95;
  max-width: 34em;
}
.actions {
  display: flex;
  gap: 25px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 35px;
  min-height: 54px;
  padding: 13px 23px;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s;
}
.primary {
  background: var(--red);
  color: white;
}
.primary:hover {
  background: #a7131b;
}
.light {
  background: white;
  color: var(--ink);
}
.light:hover {
  background: #ededed;
}
.text-link {
  font-size: 14px;
  font-weight: 600;
}
.fine {
  font-size: 12px;
  color: var(--muted);
  margin-top: 17px;
}
.hero-demo {
  background: var(--paper);
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 24px;
  position: relative;
}
.demo-top {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
}
.demo-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 15px;
}
.demo-tabs button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  border-radius: 5px;
  padding: 6px 13px;
  font-size: 13px;
}
.demo-tabs button[aria-pressed='true'] {
  color: white;
  background: var(--ink);
}
.demo-screen {
  background: white;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  text-align: center;
  padding: 24px 20px 0;
  overflow: hidden;
}
.screen-label {
  font-size: 11px;
  color: var(--muted);
}
.demo-screen h2 {
  font-size: 24px;
  margin: 16px 0 0;
}
.demo-digits {
  color: var(--red);
  font-size: clamp(60px, 7vw, 100px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.055em;
  font-variant-numeric: tabular-nums;
}
.demo-screen p {
  margin: 0 0 25px;
  font-size: 14px;
}
.demo-baseline {
  height: 5px;
  width: 72%;
  background: var(--red);
  margin: auto;
}
.demo-instructor {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  padding: 16px 0 0;
  gap: 2px 10px;
  font-size: 12px;
  border-top: 1px solid var(--line);
}
.demo-instructor > span:first-child {
  color: var(--muted);
  grid-column: 1/-1;
}
.demo-instructor strong {
  font-size: 14px;
}
.demo-instructor > span:last-child {
  color: var(--muted);
}
.demo-note {
  font-size: 11px;
  color: var(--muted);
  margin: 15px 0 0;
}
.benefit-strip {
  background: var(--ink);
  color: white;
  font-size: 13px;
}
.benefit-strip .wrap {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  padding-block: 21px;
}
.feature-section,
.getting-started {
  padding-block: 105px;
}
.section-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 45px;
}
.section-heading > p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 12px;
}
.section-heading h2 {
  width: 55%;
  margin: 0;
}
.feature-layout {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 45px;
  align-items: center;
}
.workspace-shot img {
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 38px #00000009;
}
.feature-copy article {
  margin-bottom: 32px;
}
.feature-copy article:last-child {
  margin-bottom: 0;
}
.feature-copy h3 {
  font-size: 20px;
}
.feature-copy p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}
.focus-section {
  background: var(--paper);
  overflow: hidden;
}
.focus-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 100px;
  padding-block: 80px;
}
.focus-copy h2 {
  font-size: clamp(42px, 5vw, 68px);
}
.check-list {
  padding: 0;
  list-style: none;
  margin: 25px 0 30px;
}
.check-list li {
  margin: 10px 0;
  font-size: 14px;
}
.check-list li::before {
  content: '✓';
  color: var(--red);
  margin-right: 12px;
  font-weight: 700;
}
.compact-shot {
  width: min(100%, 330px);
  justify-self: center;
}
.compact-shot img {
  border: 1px solid #d5d5d5;
  border-radius: 12px;
  box-shadow: 0 14px 45px #0000000a;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 45px;
  padding: 0;
  margin: 50px 0 35px;
  list-style: none;
}
.steps li > span {
  display: flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid #aaa;
  border-radius: 50%;
  margin-bottom: 22px;
  font-size: 14px;
}
.steps h3 {
  font-size: 22px;
}
.steps p {
  color: var(--muted);
  font-size: 15px;
}
.download-banner {
  background: var(--red);
  color: white;
  padding: 60px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  border-radius: 12px;
  margin-bottom: 85px;
}
.download-banner h2 {
  margin: 0;
}
.download-banner > div > p {
  font-size: 14px;
}
.download-banner > div:last-child p {
  font-size: 12px;
  margin-top: 17px;
  margin-bottom: 0;
  color: #ffe6e6;
}
.site-footer {
  width: min(1200px, calc(100% - 96px));
  margin: auto;
  border-top: 1px solid var(--line);
  padding: 45px 0 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
}
.site-footer p,
.site-footer small {
  color: var(--muted);
  font-size: 12px;
}
.site-footer p {
  margin: 8px 0 0;
}
.site-footer nav {
  display: flex;
  gap: 28px;
  align-items: start;
  font-size: 13px;
  padding-top: 10px;
}
.site-footer nav a {
  text-decoration: none;
}
.site-footer small {
  grid-column: 1/-1;
}
.manual-heading,
.download-heading {
  padding-block: 70px 55px;
}
.manual-heading h1,
.download-heading h1 {
  font-size: clamp(40px, 5vw, 65px);
}
.manual-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 65px;
  align-items: start;
  margin-bottom: 100px;
}
.manual-layout aside {
  position: sticky;
  top: 30px;
}
.manual-layout aside nav {
  border-left: 2px solid var(--line);
  margin-bottom: 25px;
}
.manual-layout aside nav a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}
.manual-layout aside nav a:hover {
  color: var(--red);
}
.manual-content {
  max-width: 780px;
}
.manual-content section {
  padding-bottom: 48px;
  margin-bottom: 42px;
  border-bottom: 1px solid var(--line);
}
.manual-content h2,
.download-notes h2,
.prose h2 {
  font-size: 29px;
  margin-bottom: 22px;
}
.manual-content li,
.download-notes li {
  margin-bottom: 12px;
  padding-left: 5px;
}
.manual-content p,
.manual-content li,
.download-notes p,
.download-notes li,
.prose p {
  font-size: 15px;
  color: #474747;
}
.manual-content a,
.download-notes a,
.prose a {
  color: var(--red);
}
.manual-content ol,
.download-notes ol,
.manual-content ul,
.download-notes ul {
  padding-left: 22px;
}
.manual-content figure {
  margin: 30px 0;
  padding: 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.note,
.example {
  background: var(--paper);
  padding: 22px 25px;
  border-left: 3px solid var(--red);
  margin: 25px 0;
}
.note p,
.example p {
  margin: 8px 0 0;
}
details {
  border-bottom: 1px solid var(--line);
  padding: 17px 0;
}
summary {
  cursor: pointer;
  font-weight: 600;
  padding-right: 10px;
}
details p {
  margin: 15px 0 5px;
}
code {
  overflow-wrap: anywhere;
  font-size: 12px;
}
kbd {
  display: inline-block;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 6px;
  font: inherit;
  font-size: 12px;
}
.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 80px;
  margin-bottom: 100px;
  align-items: start;
}
.download-card {
  padding: 32px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.download-card h2 {
  font-size: 28px;
}
.release-badge {
  display: inline-block;
  padding: 2px 10px;
  background: var(--ink);
  color: white;
  font-size: 12px;
  border-radius: 4px;
  margin-bottom: 20px;
}
dl {
  margin: 0 0 24px;
}
dl > div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font-size: 13px;
}
dt {
  color: var(--muted);
  flex-shrink: 0;
}
dd {
  margin: 0;
  text-align: right;
}
.download-warning {
  font-size: 13px;
  border-left: 3px solid var(--red);
  padding-left: 15px;
  margin: 25px 0;
}
.download-warning p {
  margin: 6px 0 0;
  color: var(--muted);
}
.download-file {
  display: flex;
  margin-bottom: 15px;
}
.checksum {
  margin-top: 20px;
  font-size: 12px;
  border: 0;
}
.checksum > code {
  display: block;
  padding: 12px;
  background: white;
  margin: 10px 0;
  line-height: 1.7;
}
.copy-hash {
  border: 1px solid #aaa;
  border-radius: 4px;
  background: white;
  padding: 6px 12px;
  font-size: 12px;
}
.copy-status {
  margin-left: 10px;
  color: var(--muted);
}
.download-notes section {
  margin-bottom: 50px;
}
.download-notes h3 {
  font-size: 20px;
  margin-top: 30px;
}
.prose {
  max-width: 800px;
  padding-block: 70px 100px;
}
.prose h1 {
  font-size: 60px;
}
.prose h2 {
  margin-top: 45px;
}
@media (max-width: 1000px) {
  .wrap,
  .site-header,
  .site-footer {
    width: calc(100% - 48px);
  }
  .hero {
    gap: 30px;
    padding-block: 60px;
  }
  .hero h1 {
    font-size: 62px;
  }
  .lead {
    font-size: 16px;
  }
  .hero-demo {
    padding: 20px;
  }
  .demo-digits {
    font-size: 76px;
  }
  .demo-instructor {
    grid-template-columns: 1fr;
  }
  .feature-layout {
    grid-template-columns: 1fr;
  }
  .feature-copy {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
  }
  .focus-layout {
    gap: 40px;
  }
  .manual-layout {
    grid-template-columns: 200px 1fr;
    gap: 30px;
  }
  .download-layout {
    gap: 35px;
  }
}
@media (max-width: 680px) {
  html {
    scroll-padding-top: 22px;
  }
  .wrap,
  .site-header,
  .site-footer {
    width: calc(100% - 40px);
  }
  .site-header {
    height: 78px;
  }
  .brand {
    font-size: 24px;
  }
  .site-header nav {
    gap: 16px;
  }
  .site-header nav a {
    font-size: 12px;
  }
  .site-header nav > a:first-child {
    display: none;
  }
  .nav-download {
    padding: 7px 10px;
  }
  .nav-download span {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-block: 45px 50px;
    gap: 40px;
  }
  .hero h1 {
    font-size: 64px;
  }
  .intro {
    margin-bottom: 18px;
    font-size: 13px;
  }
  .lead br {
    display: none;
  }
  .hero-demo {
    padding: 19px;
  }
  .demo-digits {
    font-size: 86px;
  }
  .demo-instructor {
    grid-template-columns: 1fr auto;
  }
  .demo-instructor strong {
    font-size: 12px;
  }
  .demo-instructor > span:last-child {
    font-size: 11px;
  }
  .benefit-strip .wrap {
    display: block;
    padding-block: 16px;
  }
  .benefit-strip span {
    display: block;
    padding: 5px 0;
  }
  .feature-section,
  .getting-started {
    padding-block: 65px;
  }
  .section-heading {
    display: block;
    margin-bottom: 30px;
  }
  .section-heading h2 {
    width: 100%;
    font-size: 40px;
  }
  .section-heading > p {
    font-size: 13px;
  }
  .feature-copy {
    display: block;
  }
  .feature-copy article {
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }
  .feature-copy article:last-child {
    border: 0;
    padding: 0;
  }
  .focus-layout {
    grid-template-columns: 1fr;
    padding-block: 55px;
    gap: 35px;
  }
  .focus-copy h2 {
    font-size: 48px;
  }
  .compact-shot {
    width: 290px;
  }
  .steps {
    display: block;
    margin-top: 30px;
  }
  .steps li {
    display: grid;
    grid-template-columns: 34px 1fr;
    gap: 0 18px;
    margin-bottom: 28px;
  }
  .steps li > span {
    grid-row: 1/3;
    margin: 0;
  }
  .steps p {
    grid-column: 2;
    margin: 0;
  }
  .steps h3 {
    font-size: 21px;
    margin-top: 3px;
  }
  .download-banner {
    padding: 32px 25px;
    display: block;
    margin-bottom: 55px;
  }
  .download-banner h2 {
    margin-bottom: 30px;
    font-size: 40px;
  }
  .site-footer {
    grid-template-columns: 1fr;
    gap: 15px;
    padding-top: 30px;
  }
  .site-footer nav {
    gap: 24px;
  }
  .manual-heading,
  .download-heading {
    padding-block: 40px 30px;
  }
  .manual-heading h1,
  .download-heading h1 {
    font-size: 42px;
  }
  .manual-layout,
  .download-layout {
    grid-template-columns: 1fr;
    gap: 35px;
    margin-bottom: 60px;
  }
  .manual-layout aside {
    position: static;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--line);
  }
  .manual-layout aside nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .manual-layout aside nav a {
    padding: 6px 10px;
    font-size: 12px;
  }
  .manual-content h2,
  .download-notes h2 {
    font-size: 26px;
  }
  .download-card {
    padding: 25px;
  }
  .prose {
    padding-block: 45px 65px;
  }
  .prose h1 {
    font-size: 46px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}