:root {
  color-scheme: light;
  --green: #16876e;
  --green-bright: #1bbd9b;
  --ink: #263a38;
  --muted: #637570;
  --pale: #f3f8f6;
  --line: #dce8e3;
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  color: var(--ink);
  background: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; font-size: 15px; line-height: 1.75; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
button, input { color: inherit; }
button:disabled { cursor: wait; opacity: .65; }
a { color: inherit; text-decoration: none; }
button, a { touch-action: manipulation; }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--green-bright); outline-offset: 5px; }
img { max-width: 100%; }
h1, h2, h3, h4, p { margin: 0; }
button svg, a svg { flex-shrink: 0; }
svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
[hidden] { display: none !important; }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 20px; height: 20px; vertical-align: middle; }
.container { width: min(1170px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: -90px; left: 20px; padding: 12px 20px; background: #fff; color: var(--green); z-index: 20; }
.skip-link:focus { top: 8px; }
.site-header { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid #e7eeeb; }
.header-inner { min-height: 92px; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 27px; font-weight: 650; letter-spacing: -.8px; white-space: nowrap; line-height: 1.2; }
.brand img { object-fit: contain; }
#primary-nav { display: flex; align-items: center; gap: 12px; }
.nav-link { padding: 9px 15px; font-size: 14px; font-weight: 600; }
.nav-link:hover, .nav-link.is-current { background: var(--pale); color: var(--green); }
.nav-link.is-current { box-shadow: inset 0 -2px var(--green); }
.nav-download { display: inline-flex; align-items: center; gap: 9px; margin-left: 12px; padding: 9px 17px; border: 1px solid var(--green); color: var(--green); font-weight: 600; font-size: 14px; }
.nav-download:hover { background: var(--green); color: #fff; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 4px 0; background: var(--ink); }
.hero { min-height: 530px; position: relative; display: grid; place-items: center; isolation: isolate; background: #173f34; color: #fff; text-align: center; }
.hero-image, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero-image { object-fit: cover; object-position: center; }
.hero-shade { background: rgba(5, 31, 26, .62); }
.hero-content { padding: 62px 45px 82px; }
.hero-brand { font-size: 20px; margin-bottom: 15px; font-weight: 400; color: #dcf2e9; }
.hero h1 { font-size: clamp(28px, 3.5vw, 46px); line-height: 1.45; letter-spacing: 1px; font-weight: 600; }
.hero-description { margin-top: 20px; font-size: 17px; color: #e2ebe7; }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 11px 24px; border: 1px solid transparent; font-size: 14px; font-weight: 600; line-height: 1.6; border-radius: 2px; }
.button-primary { background: var(--green); color: #fff; }
.hero .button-primary { background: #167d62; border-color: #50bda0; }
.button-primary:hover { background: #116c56; }
.button-outline { color: #fff; border-color: #a2b8ad; background: transparent; }
.button-outline:hover { background: rgba(255,255,255,.12); }
.carousel-arrow { position: absolute; top: 50%; display: grid; place-items: center; width: 44px; height: 54px; transform: translateY(-50%); color: #fff; border: 0; background: rgba(0,0,0,.12); }
.carousel-arrow:hover { background: rgba(0,0,0,.35); }
.carousel-previous { left: 18px; }
.carousel-previous svg { transform: rotate(180deg); }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; bottom: 23px; display: flex; gap: 4px; }
.carousel-dots button { width: 32px; height: 32px; border: 0; padding: 10px; background: transparent; }
.carousel-dots button::after { content: ""; display: block; width: 10px; height: 10px; border: 1px solid #fff; border-radius: 50%; }
.carousel-dots button[aria-pressed="true"]::after { background: #fff; }
.section { padding: 82px 0; }
.section-heading { text-align: center; margin-bottom: 55px; }
.section-heading h2 { font-size: 29px; font-weight: 500; letter-spacing: .5px; line-height: 1.5; }
.section-heading p { margin-top: 12px; color: var(--muted); }
.heading-rule { display: block; width: 46px; height: 2px; margin: 25px auto 0; background: var(--green-bright); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 70px; row-gap: 54px; }
.feature { text-align: center; }
.feature-icon { width: 49px; height: 49px; color: var(--green); stroke-width: 1.3; margin-bottom: 16px; }
.feature h3 { font-size: 19px; font-weight: 600; margin-bottom: 12px; }
.feature p { color: var(--muted); font-size: 14px; max-width: 305px; margin-inline: auto; line-height: 1.9; }
.feature a { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; color: var(--green); padding: 10px 0; margin-top: 8px; }
.feature a:hover, .text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.feature a .icon { width: 15px; height: 15px; }
.scenarios { background: var(--pale); border-block: 1px solid #e8efeb; }
.scenarios .section-heading { margin-bottom: 28px; }
.scenario-tabs { display: flex; justify-content: center; margin-bottom: 45px; }
.scenario-tabs button { min-width: 122px; padding: 12px 22px; background: transparent; border: 0; border-bottom: 1px solid #cbd9d1; color: var(--muted); }
.scenario-tabs button[aria-selected="true"] { color: var(--green); border-bottom: 2px solid var(--green); font-weight: 600; }
.scenario-tabs button:hover { color: var(--green); background: #eaf2ed; }
.scenario-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 86px; align-items: center; }
.scenario-caption { font-size: 13px; color: var(--green); }
.scenario-story h3 { font-size: 30px; font-weight: 500; line-height: 1.7; margin: 12px 0 18px; }
.scenario-story > p { color: var(--muted); max-width: 420px; line-height: 1.95; min-height: 88px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--green); font-weight: 600; font-size: 14px; padding: 12px 0; margin-top: 18px; }
.workflow { background: #fff; padding: 28px 32px 22px; border: 1px solid var(--line); border-radius: 3px; }
.workflow-heading { display: flex; align-items: center; gap: 10px; padding-bottom: 21px; border-bottom: 1px solid var(--line); color: var(--green); font-weight: 600; }
.workflow ol { list-style: none; margin: 25px 0 22px; padding: 0; }
.workflow li { display: flex; gap: 17px; position: relative; padding-bottom: 24px; }
.workflow li:last-child { padding-bottom: 0; }
.workflow li:not(:last-child)::before { content: ""; position: absolute; left: 14px; top: 31px; bottom: 1px; width: 1px; background: var(--line); }
.workflow li > span { display: grid; place-items: center; flex-shrink: 0; width: 29px; height: 29px; background: var(--pale); border: 1px solid var(--line); border-radius: 50%; font-size: 12px; color: var(--green); }
.workflow h4 { font-size: 14px; font-weight: 600; margin-bottom: 5px; }
.workflow li p { font-size: 13px; color: var(--muted); }
.workflow-note { padding-top: 15px; border-top: 1px solid var(--line); font-size: 11px; color: var(--muted); }
.download-inner { display: grid; grid-template-columns: 1fr 400px; gap: 100px; align-items: center; }
.download-platform { width: 38px; height: 38px; color: var(--green); margin-bottom: 20px; }
.download-intro h2 { font-size: 32px; font-weight: 500; line-height: 1.65; }
.download-intro > p { margin-top: 18px; color: var(--muted); }
.download-intro ul { padding: 0; margin: 26px 0 0; list-style: none; }
.download-intro li { display: flex; gap: 10px; align-items: center; margin-top: 9px; font-size: 14px; }
.download-intro li .icon { color: var(--green); width: 17px; height: 17px; }
.download-card { text-align: center; padding: 32px 33px 27px; border: 1px solid var(--line); border-top: 3px solid var(--green); border-radius: 3px; background: #fcfefd; }
.download-card > img { display: block; margin: 0 auto 13px; }
.download-card h3 { font-size: 25px; font-weight: 650; }
.download-os { font-size: 13px; color: var(--muted); margin-top: 3px; }
.download-button, #download-link { width: 100%; margin-top: 24px; }
.download-status { font-size: 12px; color: var(--muted); margin-top: 12px; overflow-wrap: anywhere; }
.download-status.is-error { color: #a93f36; }
.download-help { margin-top: 23px; border-top: 1px solid var(--line); padding-top: 20px; font-size: 12px; color: var(--muted); }
.release-details { margin-top: 16px; }
#release-version { font-size: 13px; color: var(--green); }
#download-link { margin-top: 12px; }
.release-details details { margin-top: 16px; text-align: left; font-size: 13px; }
.release-details summary { cursor: pointer; color: var(--green); }
#release-notes { margin-top: 10px; color: var(--muted); max-height: 180px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; }
.contact { background: #197d66; color: #fff; padding: 45px 0; }
.contact-inner { display: flex; align-items: center; gap: 25px; }
.contact-icon { width: 44px; height: 44px; flex-shrink: 0; color: #b7dfce; }
.contact h2 { font-size: 22px; font-weight: 500; }
.contact p { margin-top: 9px; color: #e0f0e9; font-size: 13px; line-height: 1.95; }
.button-contact { margin-left: auto; color: #fff; border-color: #b0d2c4; white-space: nowrap; }
.button-contact:hover { background: #12614e; }
.site-footer { background: #1b2623; color: #a8b7b1; }
.footer-columns { display: grid; grid-template-columns: 2fr 1fr 1.1fr; gap: 70px; padding-block: 53px; }
.footer-brand { color: #f5f8f6; font-size: 25px; }
.footer-about p { margin-top: 16px; font-size: 13px; line-height: 1.9; }
.footer-columns h2 { font-size: 15px; color: #f5f8f6; font-weight: 500; margin: 4px 0 18px; }
.footer-columns > div:not(:first-child) a, .footer-columns > div:not(:first-child) > span { display: block; font-size: 13px; margin-top: 9px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { background: #14201c; font-size: 11px; }
.footer-bottom > div { min-height: 61px; display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.footer-bottom a { color: #bed0c7; }
@media (max-width: 1000px) {
  .header-inner { gap: 20px; min-height: 82px; }
  .brand { font-size: 24px; }
  #primary-nav { gap: 3px; }
  .nav-link { padding: 9px 10px; }
  .nav-download { margin-left: 4px; padding: 9px 12px; }
  .feature-grid { column-gap: 35px; }
  .scenario-panel { gap: 40px; }
  .download-inner { grid-template-columns: 1fr 360px; gap: 45px; }
  .contact-icon { display: none; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 84px; }
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 74px; }
  .brand { font-size: 24px; }
  .brand img { width: 38px; height: 38px; }
  .menu-toggle { display: block; }
  #primary-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 12px 20px 22px; border-bottom: 1px solid var(--line); box-shadow: 0 12px 20px #14372912; }
  #primary-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { padding: 11px 16px; }
  .nav-download { margin: 10px 0 0; justify-content: center; }
  .hero { min-height: 500px; }
  .hero-image { object-position: 62% center; }
  .hero-content { padding: 55px 22px 75px; }
  .hero-brand { font-size: 18px; }
  .hero h1 { font-size: 30px; line-height: 1.6; letter-spacing: 0; text-wrap: balance; }
  .hero-description { font-size: 14px; line-height: 1.9; max-width: 420px; margin: 16px auto 0; }
  .hero-actions { margin-top: 27px; gap: 10px; }
  .hero-actions .button { padding: 11px 17px; font-size: 13px; }
  .carousel-arrow { width: 28px; height: 44px; }
  .carousel-previous { left: 1px; }
  .carousel-next { right: 1px; }
  .section { padding: 58px 0; }
  .section-heading { margin-bottom: 38px; }
  .section-heading h2 { font-size: 25px; }
  .section-heading p { font-size: 13px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 34px 24px; }
  .feature-icon { width: 41px; height: 41px; margin-bottom: 10px; }
  .feature h3 { font-size: 17px; }
  .feature p { font-size: 13px; }
  .feature a { font-size: 12px; }
  .scenario-tabs button { min-width: 0; flex: 1; padding: 12px 10px; font-size: 14px; }
  .scenario-tabs { max-width: 430px; margin-inline: auto; margin-bottom: 28px; }
  .scenario-panel { grid-template-columns: 1fr; gap: 26px; }
  .scenario-story h3 { font-size: 26px; line-height: 1.6; margin-bottom: 13px; }
  .scenario-story > p { max-width: none; min-height: 0; font-size: 14px; }
  .text-link { margin-top: 10px; }
  .workflow { padding: 23px; }
  .download-inner { grid-template-columns: 1fr; gap: 35px; }
  .download-intro { text-align: center; }
  .download-intro h2 { font-size: 27px; }
  .download-intro > p { font-size: 14px; }
  .download-intro ul { display: inline-block; text-align: left; margin-top: 16px; }
  .download-card { width: min(400px, 100%); margin: auto; }
  .contact-inner { flex-direction: column; text-align: center; gap: 23px; }
  .contact h2 { font-size: 21px; text-wrap: balance; }
  .button-contact { margin-left: 0; }
  .footer-columns { grid-template-columns: 1fr 1fr; gap: 30px 25px; padding-block: 39px; }
  .footer-about { grid-column: 1 / -1; }
  .footer-bottom > div { flex-wrap: wrap; justify-content: center; padding: 18px 0; gap: 7px 20px; }
}
@media (max-width: 370px) {
  .container { width: calc(100% - 32px); }
  .hero h1 { font-size: 26px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature p { max-width: 260px; }
  .download-card { padding: 27px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}