:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --surface: #fff;
  --soft: #f1f4f8;
  --ink: #1b2430;
  --muted: #667386;
  --quiet: #9aa5b3;
  --line: #e3e8ee;
  --line-strong: #cbd4df;
  --blue: #1769e0;
  --blue-soft: #edf4ff;
  --dark: #1e2836;
  --shadow: 0 14px 40px rgba(42, 63, 89, .11);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "PingFang SC", sans-serif; font-size: 14px; line-height: 1.6; }
body.dark { color-scheme: dark; --bg: #171b21; --surface: #1d232c; --soft: #202832; --ink: #edf2f7; --muted: #a5b0bd; --quiet: #778493; --line: #303a46; --line-strong: #465463; --blue: #8fb9ff; --blue-soft: #202f45; --dark: #edf2f7; --shadow: 0 18px 44px rgba(0,0,0,.28); }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.page-width { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.platform-header { position: absolute; z-index: 10; top: 0; right: 0; left: 0; background: rgba(247,249,252,.88); }
body.dark .platform-header { background: rgba(23,27,33,.9); }
.header-inner { width: min(1160px, calc(100% - 64px)); height: 64px; display: flex; align-items: center; gap: 48px; margin: 0 auto; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 9px; min-width: max-content; color: var(--ink); }
.brand-logo { width: 28px; height: 28px; display: block; object-fit: contain; border-radius: 7px; }
.brand strong { font-size: 14px; letter-spacing: -.02em; }
.platform-nav { display: flex; align-items: center; gap: 25px; color: var(--muted); font-size: 12px; }
.platform-nav a { position: relative; padding: 23px 0 21px; }
.platform-nav a:hover, .platform-nav a.active { color: var(--blue); }
.platform-nav a.active::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.theme-toggle, .menu-button { display: inline-grid; place-items: center; border: 1px solid var(--line); border-radius: 5px; background: transparent; cursor: pointer; }
.theme-toggle { width: 29px; height: 29px; color: var(--muted); }
.theme-toggle:hover { border-color: var(--line-strong); background: var(--surface); }
.theme-toggle .moon { display: none; }
body.dark .theme-toggle .sun { display: none; }
body.dark .theme-toggle .moon { display: inline; }
.header-login { color: var(--muted); font-size: 12px; }
.header-login:hover { color: var(--blue); }
.header-console { padding: 7px 11px; border-radius: 5px; background: var(--blue); color: #fff; font-size: 11px; font-weight: 600; }
.menu-button { display: none; width: 31px; height: 29px; gap: 4px; padding: 0 7px; }
.menu-button i { width: 100%; height: 1px; background: currentColor; }
.mobile-nav { display: none; }
.portal-hero { display: grid; justify-items: center; padding-top: 139px; padding-bottom: 76px; text-align: center; }
.hero-kicker { display: flex; align-items: center; gap: 7px; margin-bottom: 16px; color: var(--blue); font: 600 10px/1 "Segoe UI", sans-serif; letter-spacing: .13em; }
.hero-kicker span { width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 16px; font-size: clamp(39px, 5vw, 58px); font-weight: 500; letter-spacing: -.075em; line-height: 1.17; }
h1 em { color: var(--blue); font-style: normal; }
.portal-hero > p { margin-bottom: 26px; color: var(--muted); font-size: 15px; }
.hero-actions { display: flex; align-items: center; gap: 19px; }
.primary-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 0 15px; border: 0; border-radius: 5px; background: var(--blue); color: #fff; font-size: 12px; font-weight: 650; transition: background .18s ease, transform .18s ease; }
.primary-button:hover { background: #0f58bf; transform: translateY(-1px); }
.primary-button span, .text-button span { font-size: 14px; line-height: 1; }
.text-button { color: var(--muted); font-size: 12px; }
.text-button:hover { color: var(--blue); }
.text-button span { margin-left: 4px; color: var(--blue); }
.hero-meta { display: flex; align-items: center; gap: 10px; margin-top: 27px; color: var(--quiet); font-size: 10px; }
.hero-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--line-strong); }
.launch-panel { border: 1px solid var(--line); border-radius: 5px; background: var(--surface); box-shadow: 0 5px 18px rgba(49,70,95,.04); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.panel-heading small, .section-toolbar small, .capability-aside small, .docs-inner small, .download-line small, .updates-heading small { color: var(--blue); font: 600 9px/1 "Segoe UI", sans-serif; letter-spacing: .12em; }
.panel-heading h2, .section-toolbar h2 { margin: 6px 0 0; font-size: 17px; font-weight: 650; letter-spacing: -.03em; }
.panel-heading > span { color: var(--quiet); font-size: 11px; }
.launch-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.launch-item { display: flex; align-items: center; min-height: 78px; min-width: 0; padding: 14px 20px; border-right: 1px solid var(--line); }
.launch-item:last-child { border-right: 0; }
.launch-name { display: block; color: var(--ink); font-size: 12px; font-weight: 650; white-space: nowrap; }
.launch-description { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.45; }
.workspace-section { padding-top: 116px; padding-bottom: 112px; }
.section-toolbar { display: flex; align-items: end; justify-content: space-between; margin-bottom: 14px; }
.toolbar-tabs { display: flex; align-items: center; gap: 20px; color: var(--quiet); font-size: 11px; }
.toolbar-tabs span { padding-bottom: 7px; border-bottom: 2px solid transparent; }
.toolbar-tabs .selected { border-color: var(--blue); color: var(--blue); }
.workspace-frame { overflow: hidden; border: 1px solid var(--line-strong); border-radius: 5px; background: #fff; box-shadow: var(--shadow); }
.frame-bar { display: flex; align-items: center; gap: 5px; height: 34px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--surface); }
.traffic { width: 7px; height: 7px; border-radius: 50%; }
.traffic.red { background: #e98282; }.traffic.yellow { background: #dfc275; }.traffic.green { background: #87bb8e; }
.frame-address { margin-left: 9px; color: var(--quiet); font: 10px/1 "SFMono-Regular", Consolas, monospace; }
.frame-state { margin-left: auto; color: var(--quiet); font-size: 10px; }
.workspace-frame img { display: block; width: 100%; height: auto; }
.workspace-caption { margin: 11px 0 0; color: var(--quiet); font-size: 10px; text-align: right; }
.capability-section { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(55px, 9vw, 130px); padding-bottom: 122px; }
.capability-aside h2, .docs-inner h2, .updates-heading h2 { margin: 10px 0 15px; font-size: 34px; font-weight: 500; letter-spacing: -.06em; line-height: 1.16; }
.capability-aside p { max-width: 260px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.capability-table { border-top: 1px solid var(--line); }
.capability-table article { display: grid; grid-template-columns: 46px minmax(0,1fr) 18px; gap: 16px; align-items: center; min-height: 83px; border-bottom: 1px solid var(--line); }
.capability-index { color: var(--quiet); font: 10px/1 "Segoe UI", sans-serif; }
.capability-table h3 { margin: 0 0 3px; font-size: 13px; font-weight: 650; }
.capability-table p { margin: 0; color: var(--muted); font-size: 11px; }
.capability-arrow { color: var(--blue); font-size: 15px; }
.docs-section { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.docs-inner { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(55px, 9vw, 130px); padding-top: 80px; padding-bottom: 80px; }
.docs-inner h2 { font-size: 30px; }
.docs-links { border-top: 1px solid var(--line); }
.docs-links a { display: grid; grid-template-columns: 135px minmax(0,1fr) 16px; gap: 20px; align-items: center; min-height: 60px; border-bottom: 1px solid var(--line); }
.docs-links b { font-size: 12px; font-weight: 650; }
.docs-links span { color: var(--muted); font-size: 11px; }
.docs-links em { color: var(--blue); font-style: normal; }
.download-section { padding-top: 92px; padding-bottom: 100px; }
.download-line { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.download-line h2 { margin: 8px 0 4px; font-size: 22px; font-weight: 600; letter-spacing: -.04em; }
.download-line p { margin: 0; color: var(--muted); font-size: 11px; }
.updates-section { padding-bottom: 115px; }
.updates-heading h2 { font-size: 30px; }
.update-item { display: grid; grid-template-columns: 140px minmax(0,1fr) auto; gap: 20px; align-items: center; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.update-item time { color: var(--quiet); font: 10px/1 "SFMono-Regular", Consolas, monospace; }
.update-item b { font-size: 12px; font-weight: 650; }.update-item p { margin: 3px 0 0; color: var(--muted); font-size: 11px; }.update-item > span { color: var(--blue); font-size: 10px; }
.platform-footer { border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 24px; min-height: 80px; color: var(--quiet); font-size: 10px; }
.footer-inner nav { display: flex; justify-content: flex-end; gap: 18px; color: var(--muted); }
.footer-inner nav a:hover { color: var(--blue); }
.footer-inner small { padding-left: 22px; border-left: 1px solid var(--line); font-size: 10px; }
@media (max-width: 900px) {
  .page-width, .header-inner, .mobile-nav { width: min(100% - 40px, 720px); }
  .platform-nav { display: none; }.menu-button { display: inline-grid; }
  .mobile-nav { flex-direction: column; gap: 0; margin: 0 auto; padding: 5px 0 10px; border-bottom: 1px solid var(--line); background: var(--bg); }.mobile-nav.open { display: flex; }.mobile-nav a { padding: 9px 0; color: var(--muted); font-size: 12px; }
  .portal-hero { padding-top: 130px; }.capability-section, .docs-inner { grid-template-columns: 1fr; gap: 45px; }.capability-aside p { max-width: 450px; }.download-line { align-items: flex-start; flex-direction: column; }.download-line .primary-button { width: min(100%, 260px); }
}
@media (max-width: 620px) {
  .page-width, .header-inner, .mobile-nav { width: calc(100% - 32px); }.header-inner { height: 60px; gap: 15px; }.header-login { display: none; }.portal-hero { padding-top: 112px; padding-bottom: 55px; }h1 { font-size: 40px; }.portal-hero > p { font-size: 14px; }.hero-actions { flex-direction: column; gap: 13px; }.hero-meta { flex-wrap: wrap; justify-content: center; }.launch-grid { grid-template-columns: 1fr; }.launch-item { border-right: 0; border-bottom: 1px solid var(--line); }.launch-item:last-child { border-bottom: 0; }.panel-heading { padding-inline: 16px; }.workspace-section { padding-top: 80px; padding-bottom: 78px; }.section-toolbar { align-items: flex-start; flex-direction: column; gap: 13px; }.toolbar-tabs { gap: 15px; }.workspace-frame { margin-inline: -4px; }.capability-section { padding-bottom: 80px; }.capability-table article { grid-template-columns: 28px minmax(0,1fr) 15px; gap: 10px; }.docs-inner { padding-top: 60px; padding-bottom: 60px; }.docs-links a { grid-template-columns: 85px minmax(0,1fr) 15px; gap: 10px; }.download-section { padding-top: 70px; padding-bottom: 80px; }.updates-section { padding-bottom: 80px; }.update-item { grid-template-columns: 1fr auto; gap: 10px; }.update-item time { grid-column: 1 / -1; }.footer-inner { grid-template-columns: 1fr auto; gap: 13px; min-height: 110px; }.footer-inner > span { grid-column: 1 / -1; }.footer-inner nav { grid-column: 1 / -1; justify-content: flex-start; }.footer-inner small { padding-left: 0; border: 0; }
}