:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5c6677;
  --line: #dfe4eb;
  --paper: #ffffff;
  --soft: #f4f6f9;
  --night: #08101f;
  --night-2: #101a2d;
  --blue: #1769e0;
  --blue-hover: #0f57be;
  --orange: #f07b20;
  --focus: #73b5ff;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 8px 14px;
  color: #fff;
  background: var(--blue);
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  color: #fff;
  background: rgba(8, 16, 31, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
}

.header-inner {
  width: min(calc(100% - 40px), var(--content));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 700;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
  color: #cbd5e4;
  font-size: 14px;
}

.main-nav a:hover {
  color: #fff;
}

.header-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 16px;
  color: #fff;
  background: var(--blue);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
}

.header-download:hover {
  background: var(--blue-hover);
}

.hero {
  position: relative;
  height: calc(100svh - 112px);
  min-height: 540px;
  max-height: 760px;
  overflow: hidden;
  color: #fff;
  background: var(--night);
  isolation: isolate;
}

.hero-art {
  position: absolute;
  z-index: -3;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% center;
}

.hero-shade {
  position: absolute;
  z-index: -2;
  inset: 0;
  background: rgba(8, 16, 31, 0.3);
}

.hero-content {
  width: min(calc(100% - 40px), var(--content));
  height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-bottom: 36px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: #66b1ff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 660px;
  margin: 0;
  font-size: 68px;
  line-height: 1.1;
  letter-spacing: 0;
}

.hero-lead {
  margin: 14px 0 0;
  color: #f4f7fb;
  font-size: 27px;
  font-weight: 600;
}

.hero-copy {
  max-width: 610px;
  margin: 22px 0 0;
  color: #c5d0df;
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 700;
}

.primary-action {
  gap: 9px;
  color: #fff;
  background: var(--blue);
  border: 1px solid var(--blue);
}

.primary-action:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
}

.secondary-action {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.34);
}

.secondary-action:hover {
  background: rgba(255, 255, 255, 0.14);
}

.release-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  color: #9faabd;
  font-size: 13px;
}

.release-separator {
  width: 1px;
  height: 13px;
  background: #566174;
}

.hero-next {
  position: absolute;
  bottom: 22px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #b8c3d2;
  font-size: 12px;
  transform: translateX(-50%);
}

.proof-band {
  color: #fff;
  background: var(--night-2);
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.proof-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-inner div {
  min-width: 0;
  padding: 25px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.proof-inner div:first-child {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

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

.proof-inner strong {
  font-size: 17px;
}

.proof-inner span {
  margin-top: 3px;
  color: #9facbf;
  font-size: 13px;
}

.feature-section,
.faq-section {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 104px 0;
}

.section-heading {
  max-width: 780px;
}

.section-kicker {
  color: var(--blue);
}

.section-heading h2,
.performance-copy h2,
.download-inner h2 {
  margin: 0;
  color: var(--ink);
  font-size: 40px;
  line-height: 1.25;
  letter-spacing: 0;
}

.section-heading > p:last-child {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 56px;
  margin-top: 58px;
  border-top: 1px solid var(--line);
}

.feature-list article {
  position: relative;
  min-height: 190px;
  padding: 30px 0 32px 58px;
  border-bottom: 1px solid var(--line);
}

.feature-index {
  position: absolute;
  top: 32px;
  left: 0;
  color: var(--orange);
  font-size: 14px;
  font-weight: 800;
}

.feature-list h3 {
  margin: 0;
  font-size: 22px;
}

.feature-list p {
  margin: 12px 0 0;
  color: var(--muted);
}

.feature-visual {
  margin: 64px 0 0;
  overflow: hidden;
  background: var(--night);
  border: 1px solid #182a45;
  border-radius: 8px;
}

.feature-visual img {
  width: 100%;
  aspect-ratio: 1960 / 433;
  object-fit: cover;
}

.performance-section {
  color: #fff;
  background: #182131;
}

.performance-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(440px, 0.9fr);
  gap: 72px;
  padding: 92px 0;
}

.performance-copy .section-kicker {
  color: #6fb8ff;
}

.performance-copy h2 {
  color: #fff;
}

.performance-copy > p:last-child {
  margin: 18px 0 0;
  color: #bbc5d3;
  font-size: 17px;
}

.performance-facts {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
  border-top: 1px solid #40506a;
  border-bottom: 1px solid #40506a;
}

.performance-facts div {
  padding: 28px 18px;
  border-right: 1px solid #40506a;
}

.performance-facts div:first-child {
  border-left: 1px solid #40506a;
}

.performance-facts dt {
  color: #fff;
  font-size: 24px;
  font-weight: 800;
}

.performance-facts dd {
  margin: 7px 0 0;
  color: #aeb9c9;
  font-size: 13px;
}

.download-section {
  background: #eef3f9;
  border-top: 1px solid #dce5f0;
  border-bottom: 1px solid #dce5f0;
}

.download-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 72px;
  padding: 80px 0;
}

.download-inner p {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--muted);
}

.download-inner .download-meta {
  color: #43506a;
  font-size: 13px;
}

.download-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 9px;
  min-width: 230px;
  text-align: center;
}

.primary-action.large {
  min-height: 54px;
  font-size: 17px;
}

.download-actions > span {
  color: #6a7484;
  font-size: 12px;
}

.section-heading.compact {
  max-width: none;
}

.faq-list {
  margin-top: 44px;
  border-top: 1px solid var(--line);
}

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

.faq-list summary {
  position: relative;
  padding: 23px 48px 23px 0;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 700;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 20px;
  right: 4px;
  color: var(--blue);
  font-size: 24px;
  font-weight: 500;
}

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

.faq-list details p {
  max-width: 820px;
  margin: -5px 0 24px;
  color: var(--muted);
}

.site-footer {
  color: #b7c1cf;
  background: var(--night);
}

.footer-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  min-height: 112px;
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
}

.footer-inner > p:last-child {
  margin-left: auto;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

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

.noscript-note {
  position: fixed;
  z-index: 100;
  right: 12px;
  bottom: 12px;
  margin: 0;
  padding: 9px 12px;
  color: #fff;
  background: #3b4658;
  border-radius: 4px;
  font-size: 12px;
}

.article-main {
  background: var(--paper);
}

.article-hero {
  color: #fff;
  background: var(--night);
  border-bottom: 3px solid var(--blue);
}

.article-hero-inner,
.article-content,
.related-inner {
  width: min(calc(100% - 40px), 920px);
  margin: 0 auto;
}

.article-hero-inner {
  padding: 76px 0 72px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  color: #9faabd;
  font-size: 13px;
}

.breadcrumb a:hover {
  color: #fff;
}

.article-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: 52px;
  line-height: 1.18;
}

.article-lead {
  max-width: 760px;
  margin: 20px 0 0;
  color: #c5d0df;
  font-size: 19px;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 30px;
}

.article-version {
  color: #9faabd;
  font-size: 13px;
}

.article-content {
  padding: 72px 0 84px;
}

.article-summary {
  margin: 0 0 50px;
  padding: 4px 0 4px 22px;
  border-left: 4px solid var(--orange);
  color: #364258;
  font-size: 18px;
}

.article-content h2 {
  margin: 56px 0 16px;
  font-size: 30px;
  line-height: 1.3;
}

.article-content h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  margin: 30px 0 10px;
  font-size: 20px;
}

.article-content p,
.article-content li {
  color: var(--muted);
}

.article-content ul,
.article-content ol {
  margin: 14px 0 0;
  padding-left: 24px;
}

.article-content li + li {
  margin-top: 8px;
}

.fact-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 36px 0 8px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.fact-list div {
  padding: 22px 20px;
  border-right: 1px solid var(--line);
}

.fact-list div:last-child {
  border-right: 0;
}

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

.fact-list strong {
  font-size: 22px;
}

.fact-list span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.related-guides {
  background: var(--soft);
  border-top: 1px solid var(--line);
}

.related-inner {
  padding: 56px 0 64px;
}

.related-inner h2 {
  margin: 0 0 24px;
  font-size: 25px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #cdd4df;
}

.related-links a {
  padding: 20px 16px 20px 0;
  border-bottom: 1px solid #cdd4df;
  color: var(--blue);
  font-weight: 700;
}

.related-links a:hover {
  color: var(--blue-hover);
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
  }

  .header-download {
    margin-left: auto;
  }

  .hero-art {
    object-position: 60% center;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-copy {
    max-width: 540px;
  }

  .proof-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-inner div:nth-child(3) {
    border-left: 1px solid rgba(255, 255, 255, 0.12);
  }

  .performance-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .download-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .download-actions {
    align-items: flex-start;
  }
}

@media (max-width: 700px) {
  .site-header {
    height: 64px;
  }

  .header-inner,
  .hero-content,
  .proof-inner,
  .feature-section,
  .performance-inner,
  .download-inner,
  .faq-section,
  .footer-inner {
    width: min(calc(100% - 30px), var(--content));
  }

  .article-hero-inner,
  .article-content,
  .related-inner {
    width: min(calc(100% - 30px), 920px);
  }

  .article-hero-inner {
    padding: 54px 0 50px;
  }

  .article-hero h1 {
    font-size: 38px;
  }

  .article-lead {
    font-size: 17px;
  }

  .article-content {
    padding: 54px 0 64px;
  }

  .article-content h2 {
    font-size: 26px;
  }

  .fact-list,
  .related-links {
    grid-template-columns: 1fr;
  }

  .fact-list div,
  .fact-list div:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .fact-list div:last-child {
    border-bottom: 0;
  }

  .brand span {
    font-size: 17px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .header-download {
    min-height: 36px;
    padding: 0 12px;
  }

  .header-download span:last-child {
    display: none;
  }

  .hero {
    height: calc(100svh - 92px);
    min-height: 540px;
    max-height: 680px;
  }

  .hero-art {
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
    object-position: 69% center;
  }

  .hero-shade {
    background: rgba(8, 16, 31, 0.56);
  }

  .hero-content {
    justify-content: flex-end;
    padding-bottom: 76px;
  }

  .eyebrow {
    margin-bottom: 9px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .hero-lead {
    margin-top: 8px;
    font-size: 22px;
  }

  .hero-copy {
    margin-top: 14px;
    font-size: 15px;
  }

  .hero-actions {
    width: 100%;
    margin-top: 22px;
  }

  .primary-action,
  .secondary-action {
    flex: 1 1 100%;
  }

  .release-line {
    flex-wrap: wrap;
    gap: 5px 10px;
  }

  .release-separator {
    display: none;
  }

  .hero-next {
    display: none;
  }

  .proof-inner {
    grid-template-columns: 1fr;
  }

  .proof-inner div,
  .proof-inner div:first-child,
  .proof-inner div:nth-child(3) {
    padding: 18px 4px;
    border-right: 0;
    border-left: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .proof-inner div:last-child {
    border-bottom: 0;
  }

  .feature-section,
  .faq-section {
    padding: 72px 0;
  }

  .section-heading h2,
  .performance-copy h2,
  .download-inner h2 {
    font-size: 31px;
  }

  .feature-list {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .feature-list article {
    min-height: 0;
    padding: 25px 0 25px 46px;
  }

  .feature-index {
    top: 27px;
  }

  .feature-visual {
    margin-top: 44px;
  }

  .feature-visual img {
    aspect-ratio: 16 / 8;
    object-position: 70% center;
  }

  .performance-inner {
    padding: 70px 0;
  }

  .performance-facts {
    grid-template-columns: 1fr;
  }

  .performance-facts div,
  .performance-facts div:first-child {
    display: grid;
    grid-template-columns: 110px 1fr;
    align-items: center;
    padding: 17px 0;
    border-right: 0;
    border-left: 0;
    border-bottom: 1px solid #40506a;
  }

  .performance-facts div:last-child {
    border-bottom: 0;
  }

  .performance-facts dd {
    margin: 0;
  }

  .download-inner {
    padding: 68px 0;
  }

  .download-actions {
    width: 100%;
  }

  .download-actions .primary-action {
    width: 100%;
  }

  .faq-list summary {
    font-size: 16px;
  }

  .footer-inner {
    min-height: 150px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
  }

  .footer-inner p {
    margin: 0;
  }

  .footer-inner > p:last-child {
    margin-left: 0;
  }

  .footer-links {
    gap: 3px 16px;
  }
}

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