:root {
  color-scheme: light;
  --surface: #ffffff;
  --surface-soft: #f6f7f9;
  --surface-blue: #f3f7ff;
  --ink: #16181b;
  --ink-soft: #69717a;
  --line: #e1e4e8;
  --blue: #3367d6;
  --blue-dark: #204da9;
  --green: #197451;
  --focus: #f3a800;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 9px 14px;
  background: var(--ink);
  color: #ffffff;
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 64px;
  padding: 0 max(24px, calc((100vw - 1320px) / 2));
  border-bottom: 1px solid rgba(225, 228, 232, 0.9);
  background: rgba(255, 255, 255, 0.95);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 9px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
}

.main-nav {
  display: flex;
  gap: 34px;
}

.main-nav a,
.language-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #555c64;
  font-size: 14px;
  text-decoration: none;
}

.main-nav a:hover,
.language-link:hover {
  color: var(--blue);
}

.language-link {
  justify-self: end;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 150px);
  max-height: 720px;
  padding: 84px 24px 110px;
  text-align: center;
}

.hero-inner {
  max-width: 900px;
}

.hero-mark {
  width: 76px;
  height: 76px;
  margin: 0 auto 28px;
}

.eyebrow {
  margin: 0 0 14px;
  color: #65707a;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.blue {
  color: var(--blue);
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 58px;
  font-weight: 400;
  line-height: 1.15;
}

.hero-lead {
  max-width: 760px;
  margin: 26px auto 32px;
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.primary-action,
.text-action {
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 5px;
  font: inherit;
  font-weight: 600;
}

.primary-action {
  border: 1px solid #c6cbd1;
  background: #eef0f2;
  color: #7b838b;
  cursor: not-allowed;
}

.text-action {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--blue);
  color: var(--blue);
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease;
}

.text-action:hover {
  background: var(--blue);
  color: #ffffff;
}

.hero-note {
  margin: 22px 0 0;
  color: #68727b;
  font-size: 13px;
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: #a4abb2;
  font-size: 24px;
  text-decoration: none;
  transform: translateX(-50%);
}

.product-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(560px, 1.4fr);
  gap: 80px;
  align-items: center;
  padding: 128px max(28px, calc((100vw - var(--max-width)) / 2));
  background: var(--surface-soft);
}

.product-copy h2,
.release-copy h2,
.center-heading h2 {
  margin: 0;
  font-size: 40px;
  font-weight: 400;
  line-height: 1.32;
}

.product-copy > p:not(.eyebrow):not(.fact-label),
.release-copy > p:not(.eyebrow),
.center-heading > p:not(.eyebrow) {
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.quiet-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  color: #454b52;
}

.quiet-list li {
  position: relative;
  padding: 5px 0 5px 22px;
}

.quiet-list li::before {
  position: absolute;
  top: 14px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  content: "";
}

.fact-label {
  margin: 28px 0 0;
  color: var(--green);
  font-size: 13px;
  font-weight: 650;
}

.app-window {
  margin: 0;
  overflow: hidden;
  border: 1px solid #d5d9dd;
  border-radius: 6px;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(27, 35, 45, 0.14);
}

.app-window img {
  width: 100%;
  height: auto;
}

.app-window figcaption {
  padding: 10px 14px;
  border-top: 1px solid #edf0f2;
  color: #66717a;
  font-size: 12px;
}

.workflow-section,
.faq-section {
  padding: 132px max(28px, calc((100vw - var(--max-width)) / 2));
}

.center-heading {
  max-width: 780px;
  margin: 0 auto 76px;
  text-align: center;
}

.center-heading.narrow {
  max-width: 560px;
  margin-bottom: 48px;
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.workflow-list li {
  min-height: 260px;
  padding: 36px 40px 34px 0;
}

.workflow-list li + li {
  padding-left: 40px;
  border-left: 1px solid var(--line);
}

.workflow-list span {
  color: var(--blue);
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
}

.workflow-list h3 {
  margin: 46px 0 10px;
  font-size: 22px;
  font-weight: 500;
}

.workflow-list p {
  margin: 0;
  color: var(--ink-soft);
}

.release-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(520px, 1.35fr);
  gap: 88px;
  align-items: start;
  padding: 128px max(28px, calc((100vw - var(--max-width)) / 2));
  background: var(--surface-blue);
}

.release-facts {
  margin: 0;
  border-top: 1px solid #cfdaec;
}

.release-facts div {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 22px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid #cfdaec;
}

.release-facts dt {
  font-weight: 600;
}

.release-facts dd {
  margin: 0;
  color: #555e68;
}

.release-status {
  color: var(--blue);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.faq-section {
  background: #ffffff;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

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

.faq-list summary {
  min-height: 72px;
  padding: 22px 48px 22px 0;
  font-size: 17px;
  font-weight: 550;
  cursor: pointer;
}

.faq-list p {
  max-width: 720px;
  margin: -3px 0 26px;
  color: var(--ink-soft);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 30px;
  align-items: center;
  padding: 42px max(28px, calc((100vw - var(--max-width)) / 2));
  border-top: 1px solid var(--line);
  color: #606b75;
  font-size: 12px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.site-footer p {
  margin: 0;
}

.not-found {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-height: 100dvh;
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px;
}

.not-found h1 {
  margin: 0;
  font-size: 48px;
  font-weight: 400;
}

.not-found > p:not(.eyebrow) {
  color: var(--ink-soft);
}

.not-found-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  margin-top: 18px;
  padding: 9px 17px;
  border: 1px solid var(--blue);
  border-radius: 5px;
  color: var(--blue);
  text-decoration: none;
}

.not-found-link:hover {
  background: var(--blue);
  color: #ffffff;
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0 20px;
  }

  .main-nav {
    display: none;
  }

  .hero {
    min-height: 620px;
  }

  .product-section,
  .release-section {
    grid-template-columns: 1fr;
    gap: 58px;
  }

  .product-copy {
    max-width: 680px;
  }

  .workflow-list {
    grid-template-columns: 1fr;
  }

  .workflow-list li,
  .workflow-list li + li {
    min-height: 210px;
    padding: 30px 0;
    border-left: 0;
  }

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

  .workflow-list h3 {
    margin-top: 24px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 60px;
    padding: 0 16px;
  }

  .brand span,
  .language-link {
    font-size: 13px;
  }

  .hero {
    min-height: calc(100dvh - 96px);
    max-height: none;
    padding: 64px 18px 88px;
  }

  .hero-mark {
    width: 62px;
    height: 62px;
    margin-bottom: 22px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-lead {
    margin: 20px auto 26px;
    font-size: 17px;
  }

  .hero-actions {
    gap: 10px;
  }

  .primary-action,
  .text-action {
    width: 100%;
    justify-content: center;
  }

  .hero-note {
    font-size: 12px;
  }

  .product-section,
  .workflow-section,
  .release-section,
  .faq-section {
    padding: 82px 18px;
  }

  .product-copy h2,
  .release-copy h2,
  .center-heading h2 {
    font-size: 32px;
  }

  .center-heading {
    margin-bottom: 48px;
  }

  .product-section {
    gap: 42px;
  }

  .app-window figcaption {
    font-size: 11px;
  }

  .release-facts div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .release-status {
    margin-top: 5px;
  }

  .site-footer {
    padding: 34px 18px;
  }
}

@media (max-height: 680px) and (orientation: landscape) {
  .hero {
    min-height: calc(100dvh - 42px);
    padding: 40px 24px 66px;
  }

  .hero-mark {
    width: 44px;
    height: 44px;
    margin-bottom: 8px;
  }

  .hero .eyebrow {
    margin-bottom: 4px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-lead {
    max-width: 760px;
    margin: 8px auto 12px;
    font-size: 14px;
    line-height: 1.45;
  }

  .primary-action,
  .text-action {
    width: auto;
    min-height: 40px;
    padding: 7px 14px;
  }

  .hero-note {
    margin-top: 9px;
  }

  .scroll-cue {
    bottom: 8px;
  }
}

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

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