@font-face {
  font-family: "Inter";
  src: url("/fonts/InterVariable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --ink: #18181b;
  --muted: #52525b;
  --subtle: #71717a;
  --line: #e4e4e7;
  --soft: #fafaf9;
  --accent: #047857;
  --accent-hover: #065f46;
  --shell: 1280px;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; background: var(--soft); color: var(--ink); font-family: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
body { min-width: 320px; margin: 0; background: var(--soft); }
a { color: inherit; text-underline-offset: 3px; }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 50; top: 8px; left: 8px; transform: translateY(-160%); background: var(--ink); padding: 8px 12px; color: #fff; font-size: 14px; }
.skip-link:focus { transform: none; }
.shell { width: min(var(--shell), calc(100% - 48px)); margin-inline: auto; }

.topbar { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--soft) 94%, transparent); }
.topbar-shell { display: flex; width: min(1280px, calc(100% - 48px)); min-height: 64px; align-items: center; justify-content: space-between; gap: 32px; margin-inline: auto; }
.brand-lockup, .iot01-brand, .topbar-navigation, .primary-nav, .language-nav { display: flex; align-items: center; }
.brand-lockup { min-width: max-content; gap: 18px; }
.iot01-brand { gap: 9px; font-size: 14px; font-weight: 650; letter-spacing: -.035em; text-decoration: none; }
.iot01-brand img { width: 24px; height: 24px; }
.brand-divider { width: 1px; height: 24px; background: var(--line); }
.product-brand { font-size: 14px; font-weight: 650; letter-spacing: -.02em; text-decoration: none; }
.topbar-navigation { justify-content: flex-end; gap: 28px; }
.primary-nav { gap: 24px; font-size: 13px; font-weight: 500; }
.primary-nav a, .language-nav a { text-decoration: none; transition: color .15s ease; }
.primary-nav a:hover, .language-nav a:hover, .product-brand:hover, footer a:hover { color: var(--accent); }
.language-nav { gap: 7px; color: var(--subtle); font-size: 12px; font-weight: 600; }
.language-nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 5px; }

.language-suggestion { border-bottom: 1px solid #a7f3d0; background: #ecfdf5; }
.language-suggestion[hidden] { display: none; }
.language-suggestion-copy { display: flex; width: min(var(--shell), calc(100% - 48px)); min-height: 52px; align-items: center; justify-content: space-between; gap: 20px 32px; margin-inline: auto; }
.language-suggestion p { margin: 0; color: #064e3b; font-size: 13px; line-height: 20px; }
.language-suggestion-copy > div { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.language-suggestion a, .language-suggestion button { color: var(--accent-hover); font-size: 13px; font-weight: 650; }
.language-suggestion a { text-decoration: none; }
.language-suggestion button { border: 0; background: transparent; padding: 0; cursor: pointer; text-decoration: underline; text-decoration-color: #6ee7b7; }

.hero { border-bottom: 1px solid var(--line); padding: 88px 0 80px; }
.eyebrow { margin: 0; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .1em; line-height: 20px; text-transform: uppercase; }
h1 { max-width: 920px; margin: 20px 0 0; font-size: clamp(48px, 6.2vw, 84px); font-weight: 620; letter-spacing: -.06em; line-height: .98; text-wrap: balance; }
html[lang="de"] h1 { max-width: 1000px; font-size: clamp(44px, 5.7vw, 78px); }
html[lang="zh-Hans"] h1 { letter-spacing: -.045em; }
.lead { max-width: 720px; margin: 28px 0 0; color: var(--muted); font-size: 18px; line-height: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 32px; margin-top: 34px; }
.primary-action, .secondary-action { display: inline-flex; align-items: center; gap: 18px; font-size: 14px; font-weight: 650; text-decoration: none; }
.primary-action { background: var(--accent); padding: 14px 18px; color: #fff; transition: background .15s ease; }
.primary-action:hover { background: var(--accent-hover); }
.secondary-action { color: var(--accent); }
.secondary-action:hover { color: var(--accent-hover); }

.content { padding-bottom: 104px; }
.section { border-bottom: 1px solid var(--line); padding: 56px 0 64px; }
.section h2 { max-width: 800px; margin: 0 0 24px; font-size: clamp(28px, 3.2vw, 42px); font-weight: 580; letter-spacing: -.04em; line-height: 1.15; text-wrap: balance; }
.intro-section { display: grid; grid-template-columns: minmax(240px, .9fr) minmax(0, 1.35fr); gap: 72px; }
.intro-section h2 { margin: 0; }
.intro-section > div { max-width: 680px; }
.intro-section p, .prose p, .faq p { margin: 0; color: var(--muted); font-size: 16px; line-height: 29px; }
.intro-section p + p, .prose p + p { margin-top: 16px; }
.section-heading { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 1.6fr); align-items: end; gap: 48px; margin-bottom: 28px; }
.section-heading h2 { margin: 0; }

.home-start { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(0, 1.4fr); gap: 72px; border-bottom: 1px solid var(--line); padding: 56px 0 64px; }
.home-intro { padding-right: 16px; }
.home-intro h2 { margin: 0 0 24px; font-size: clamp(28px, 3.2vw, 42px); font-weight: 580; letter-spacing: -.04em; line-height: 1.15; text-wrap: balance; }
.home-intro p { margin: 0; color: var(--muted); font-size: 14px; line-height: 25px; }
.home-intro p + p { margin-top: 14px; }
.featured-downloads { border-left: 1px solid var(--line); }
.featured-download-row { display: grid; grid-template-columns: minmax(0, 1fr) max-content; align-items: center; gap: 28px; min-height: 116px; border-bottom: 1px solid var(--line); padding: 18px 4px 18px 40px; }
.featured-download-row:first-child { border-top: 1px solid var(--ink); }
.featured-download-row > div { display: grid; grid-template-columns: minmax(150px, .7fr) minmax(120px, .55fr) minmax(220px, 1.2fr); align-items: center; gap: 24px; }
.featured-download-row p { margin: 0; }
.featured-download-row > div > p:first-child { color: var(--subtle); font-size: 11px; font-weight: 650; letter-spacing: .06em; line-height: 18px; text-transform: uppercase; }
.featured-download-row h3 { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -.02em; line-height: 24px; }
.featured-download-row > div > p:last-child { color: var(--muted); font-size: 13px; line-height: 22px; }
.featured-download-row > a { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); font-size: 13px; font-weight: 650; text-decoration: none; }

.download-list { border-top: 1px solid var(--ink); }
.download-row { display: grid; grid-template-columns: minmax(0, 1fr) max-content; align-items: center; gap: 32px; min-height: 122px; border-bottom: 1px solid var(--line); padding: 20px 4px; }
.download-meta { display: grid; grid-template-columns: minmax(190px, .8fr) minmax(180px, .75fr) minmax(260px, 1.4fr); align-items: center; gap: 28px; }
.download-meta > p:first-child { margin: 0; color: var(--subtle); font-size: 11px; font-weight: 650; letter-spacing: .06em; line-height: 18px; text-transform: uppercase; }
.download-meta h3 { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -.02em; line-height: 24px; }
.download-meta > p:last-child { margin: 0; color: var(--muted); font-size: 14px; line-height: 24px; }
.download-link { display: inline-flex; align-items: center; gap: 14px; min-width: 142px; justify-content: flex-end; color: var(--accent); font-size: 14px; font-weight: 650; text-decoration: none; }
.download-link:hover { color: var(--accent-hover); }

.quick-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line); padding: 56px 0 64px; }
.quick-links article { min-width: 0; padding: 0 40px; }
.quick-links article:first-child { padding-left: 0; }
.quick-links article + article { border-left: 1px solid var(--line); }
.quick-links article:last-child { padding-right: 0; }
.quick-links article > p:first-child { margin: 0 0 32px; color: var(--subtle); font-size: 11px; font-weight: 650; letter-spacing: .08em; line-height: 18px; text-transform: uppercase; }
.quick-links article > p:first-child span { margin-right: 8px; color: var(--accent); }
.quick-links h2 { margin: 0; font-size: 21px; font-weight: 620; letter-spacing: -.03em; line-height: 28px; }
.quick-links h2 a { text-decoration: none; }
.quick-links article > p:nth-of-type(2) { min-height: 72px; margin: 16px 0 24px; color: var(--muted); font-size: 14px; line-height: 24px; }
.text-link { color: var(--accent); font-size: 13px; font-weight: 600; text-decoration: none; }

.table-wrap { overflow-x: auto; border-top: 1px solid var(--ink); }
table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 24px; }
th, td { min-width: 190px; border-bottom: 1px solid var(--line); padding: 18px 16px; text-align: left; vertical-align: top; }
th:first-child, td:first-child { padding-left: 4px; }
thead th { color: var(--subtle); font-size: 11px; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
tbody th { font-weight: 650; }
tbody td { color: var(--muted); }
.related div { display: flex; flex-wrap: wrap; border-top: 1px solid var(--ink); }
.related a { flex: 1 1 280px; border-bottom: 1px solid var(--line); padding: 18px 4px; color: var(--accent); font-size: 14px; font-weight: 600; text-decoration: none; }
.faq details { max-width: 800px; border-top: 1px solid var(--line); padding: 20px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-size: 15px; font-weight: 650; line-height: 24px; }
.faq p { margin-top: 14px; }

.ad-slot:empty { display: none; }
.ad-slot:not(:empty) { display: grid; min-height: 250px; place-items: center; border-bottom: 1px solid var(--line); padding: 32px 0; contain: layout paint; }

footer { border-top: 1px solid var(--line); background: #f4f4f5; color: var(--muted); }
.footer-shell { display: grid; width: min(var(--shell), calc(100% - 48px)); grid-template-columns: 1.4fr 1fr; gap: 40px 80px; margin-inline: auto; padding: 48px 0; }
.footer-brand { color: var(--ink); font-size: 14px; font-weight: 650; letter-spacing: -.03em; text-decoration: none; }
.footer-shell p { max-width: 520px; margin: 10px 0 0; font-size: 13px; line-height: 22px; }
.footer-shell nav { display: grid; align-content: start; gap: 10px; }
.footer-shell nav a { width: max-content; color: var(--ink); font-size: 13px; text-decoration: none; }
.footer-notice { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 24px; }

.not-found { min-height: calc(100vh - 64px); padding-block: 112px; }
.not-found h1 { max-width: 800px; font-size: clamp(44px, 6vw, 76px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 32px; }
.actions a { color: var(--accent); font-size: 14px; font-weight: 650; }

@media (max-width: 980px) {
  .topbar-shell { align-items: flex-start; flex-direction: column; gap: 18px; padding-block: 18px; }
  .topbar-navigation { width: 100%; justify-content: space-between; }
  .download-meta { grid-template-columns: minmax(150px, .75fr) minmax(160px, .75fr) minmax(220px, 1.2fr); gap: 18px; }
  .home-start { grid-template-columns: 1fr; gap: 36px; }
  .featured-downloads { border-left: 0; }
  .featured-download-row { padding-left: 0; }
  .featured-download-row > div { grid-template-columns: minmax(130px, .65fr) minmax(120px, .55fr) minmax(200px, 1.2fr); gap: 16px; }
  .quick-links article { padding-inline: 24px; }
}

@media (max-width: 760px) {
  .shell, .footer-shell, .topbar-shell { width: min(100% - 32px, var(--shell)); }
  .topbar-navigation { align-items: flex-start; flex-direction: column; gap: 16px; }
  .primary-nav { width: 100%; gap: 10px 20px; overflow-x: auto; padding-bottom: 4px; white-space: nowrap; }
  .language-suggestion-copy { width: min(100% - 32px, var(--shell)); align-items: flex-start; flex-direction: column; gap: 10px; padding-block: 14px; }
  .hero { padding: 64px 0 56px; }
  h1, html[lang="de"] h1 { font-size: clamp(42px, 13vw, 64px); }
  .lead { margin-top: 22px; font-size: 17px; line-height: 28px; }
  .intro-section, .section-heading { grid-template-columns: 1fr; gap: 24px; }
  .home-start { padding: 44px 0 52px; }
  .featured-download-row { grid-template-columns: 1fr; gap: 16px; padding: 22px 0; }
  .featured-download-row > div { grid-template-columns: 1fr; gap: 5px; }
  .section { padding: 44px 0 52px; }
  .download-row { grid-template-columns: 1fr; gap: 18px; padding: 24px 0; }
  .download-meta { grid-template-columns: 1fr; gap: 5px; }
  .download-link { min-width: 0; justify-content: flex-start; }
  .quick-links { grid-template-columns: 1fr; padding: 0; }
  .quick-links article, .quick-links article:first-child, .quick-links article:last-child { border-left: 0; border-bottom: 1px solid var(--line); padding: 40px 0 44px; }
  .quick-links article > p:first-child { margin-bottom: 18px; }
  .quick-links article > p:nth-of-type(2) { min-height: 0; }
  .footer-shell { grid-template-columns: 1fr; }
  .footer-notice { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}