:root {
  --bg: #ffffff;
  --bg-soft: #f6faf6;
  --bg-panel: #eaf6fb;
  --text: #333333;
  --muted: #5f6b78;
  --line: #e5e9ef;
  --brand: #0068b7;
  --brand-dark: #035390;
  --brand-cyan: #6dcedd;
  --brand-soft: #e4f4fa;
  --navy: #25384c;
  --shadow: 0 18px 44px rgba(3, 83, 144, 0.08);
  --shadow-soft: 0 10px 28px rgba(3, 83, 144, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

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

.skip-link {
  position: absolute;
  top: 16px;
  left: 20px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  transform: translateY(-140%);
  transition: transform 140ms ease;
}

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

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

[hidden] {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(229, 233, 239, 0.92);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 -3px 0 rgba(3, 83, 144, 0.07);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--navy);
  font-weight: 760;
  letter-spacing: 0;
}

.brand-logo {
  width: clamp(124px, 11vw, 146px);
  height: auto;
  flex: 0 0 auto;
}

.brand-divider {
  width: 1px;
  height: 20px;
  background: var(--line);
}

.brand-product {
  color: var(--navy);
  font-size: 1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(14px, 3vw, 30px);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

.language-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(244, 249, 251, 0.8);
  font-size: 0.82rem;
  font-weight: 720;
}

.language-nav a {
  padding: 6px 9px;
  border-radius: 6px;
  color: var(--muted);
  white-space: nowrap;
}

.language-nav a[aria-current="true"] {
  background: #fff;
  color: var(--brand);
  box-shadow: 0 1px 3px rgba(8, 41, 67, 0.08);
}

.icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.icon-box {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(0, 104, 183, 0.12);
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.icon-box .icon {
  width: 22px;
  height: 22px;
}

.button-icon,
.hero-chip-icon,
.text-link-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
}

.button-icon {
  color: currentColor;
}

.button-icon .icon {
  width: 18px;
  height: 18px;
}

.text-link-icon {
  transform: translateY(1px);
}

.text-link-icon .icon {
  width: 15px;
  height: 15px;
}

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

.nav-cta {
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--navy);
}

.hero,
.section,
.page-hero,
.contact-section,
.cta-band,
.site-footer {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(420px, 1.18fr);
  gap: clamp(30px, 5vw, 78px);
  align-items: center;
  justify-content: center;
  min-height: 680px;
  padding: 78px max(20px, calc((100vw - 1240px) / 2)) 70px;
  border-bottom: 1px solid rgba(215, 229, 232, 0.8);
  background:
    linear-gradient(165deg, rgba(216, 238, 240, 0.72) 0%, rgba(255, 255, 255, 0.94) 48%, #fff 100%),
    linear-gradient(0deg, rgba(0, 104, 183, 0.08), transparent 48%);
}

.hero-copy {
  min-width: 0;
}

.eyebrow,
.card-kicker {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

:lang(zh-Hant) .feature-detail h1,
:lang(zh-Hans) .feature-detail h1 {
  overflow-wrap: normal;
  word-break: keep-all;
}

:lang(zh-Hant) .feature-detail h1,
:lang(zh-Hans) .feature-detail h1 {
  font-size: clamp(2.65rem, 5vw, 4.15rem);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--navy);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  font-size: clamp(3rem, 6.2vw, 5.25rem);
  font-weight: 780;
}

h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.95rem);
  line-height: 1.12;
  font-weight: 760;
}

:lang(zh-Hant) h2,
:lang(zh-Hans) h2 {
  font-size: clamp(1.85rem, 3vw, 2.62rem);
  line-height: 1.18;
  line-break: strict;
}

@supports (word-break: auto-phrase) {
  :lang(zh-Hant) h2,
  :lang(zh-Hans) h2 {
    word-break: auto-phrase;
  }
}

h3 {
  font-size: 1.18rem;
  font-weight: 740;
}

p {
  color: var(--muted);
}

.hero-lede,
.page-hero p,
.section-lede {
  max-width: 680px;
  font-size: 1.14rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 760;
  line-height: 1;
  white-space: nowrap;
}

:where(a, button, input, select, textarea, [tabindex="-1"]):focus-visible {
  outline: 3px solid rgba(0, 104, 183, 0.22);
  outline-offset: 3px;
}

.button.primary {
  background: var(--brand);
  color: #fff;
}

.button.primary:hover {
  background: var(--brand-dark);
}

.button.secondary {
  border-color: var(--line);
  color: var(--navy);
  background: #fff;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.capability-strip {
  position: relative;
  gap: 8px;
}

.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  background: var(--bg-soft);
  font-size: 0.88rem;
  font-weight: 680;
}

.hero-chip-icon {
  color: var(--brand);
}

.hero-chip-icon .icon {
  width: 16px;
  height: 16px;
}

.hero-visual {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(180deg, #fff, var(--bg-soft));
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
}

.section {
  padding: 76px 0;
}

.intro {
  display: grid;
  grid-template-columns: 0.86fr 1fr;
  gap: 40px;
  border-top: 1px solid var(--line);
}

.platform-showcase {
  padding-top: 36px;
}

.platform-showcase-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.44fr) minmax(0, 1fr);
  gap: 22px;
  align-items: stretch;
  margin-top: 30px;
}

.platform-showcase-copy,
.platform-showcase-visual {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.platform-showcase-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 30px;
}

.platform-showcase-copy h3 {
  max-width: 420px;
  font-size: clamp(1.35rem, 2.1vw, 1.75rem);
  line-height: 1.14;
}

.platform-showcase-copy p {
  margin: 16px 0 0;
}

.platform-showcase-visual {
  min-width: 0;
  padding: 10px;
  background:
    radial-gradient(circle at top right, rgba(0, 104, 183, 0.1), transparent 42%),
    linear-gradient(180deg, #fff, var(--bg-soft));
  box-shadow: var(--shadow-soft);
}

.platform-showcase-visual img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
}

.sample-ecosystem-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(0, 1fr);
  gap: 22px;
  align-items: stretch;
}

.sample-ecosystem-copy,
.sample-ecosystem-visual {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.sample-ecosystem-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 30px;
}

.sample-ecosystem-copy h2 {
  max-width: 520px;
  font-size: clamp(1.55rem, 2.5vw, 2.15rem);
  line-height: 1.16;
}

.sample-ecosystem-copy p:not(.eyebrow) {
  margin: 16px 0 0;
}

.sample-ecosystem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0;
}

.sample-ecosystem-tags span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(0, 104, 183, 0.12);
  border-radius: 8px;
  color: var(--navy);
  background: var(--bg-soft);
  font-weight: 740;
}

.sample-ecosystem-visual {
  min-width: 0;
  padding: 10px;
  background:
    radial-gradient(circle at top right, rgba(109, 206, 221, 0.14), transparent 42%),
    linear-gradient(180deg, #fff, var(--brand-soft));
}

.sample-ecosystem-visual img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
}

.principles-section {
  width: 100%;
  max-width: none;
  padding: 86px max(20px, calc((100vw - 1160px) / 2));
  background: linear-gradient(180deg, #f7fbfc 0%, #eaf7f8 100%);
}

.principles-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 20px;
  margin-top: 34px;
}

.principle-tabs,
.principle-panel {
  border: 1px solid rgba(0, 104, 183, 0.14);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.72) inset;
}

.principle-tabs {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 16px;
}

.principle-tabs span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 740;
}

.principle-tabs span.active {
  background: var(--brand-soft);
  color: var(--brand-dark);
  box-shadow: 0 8px 18px rgba(0, 104, 183, 0.09);
}

.principle-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.56fr);
  gap: 30px;
  align-items: center;
  min-height: 400px;
  padding: clamp(26px, 4vw, 44px);
}

.principle-panel h3 {
  max-width: 720px;
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  line-height: 1.1;
}

.principle-panel p:not(.eyebrow) {
  max-width: 680px;
}

.principle-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.principle-metrics span {
  display: grid;
  gap: 6px;
  min-height: 112px;
  padding: 18px;
  border: 1px solid rgba(0, 104, 183, 0.13);
  border-radius: 8px;
  background: linear-gradient(180deg, #fff, #f4fafb);
}

.principle-metrics strong {
  color: var(--navy);
  font-size: 1.25rem;
}

.principle-metrics small {
  color: var(--muted);
  font-weight: 700;
}

.section-heading {
  max-width: 760px;
}

.section-heading.centered {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.home-feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  display: flex;
  min-height: 250px;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.home-feature-grid .feature-card {
  min-height: 430px;
}

.home-feature-grid .feature-card:nth-child(1),
.home-feature-grid .feature-card:nth-child(2),
.home-feature-grid .feature-card:nth-child(3),
.home-feature-grid .feature-card:nth-child(8) {
  min-height: 430px;
}

.home-feature-grid .feature-card:nth-child(1) .feature-icon,
.home-feature-grid .feature-card:nth-child(2) .feature-icon,
.home-feature-grid .feature-card:nth-child(3) .feature-icon,
.home-feature-grid .feature-card:nth-child(8) .feature-icon {
  width: 42px;
  height: 42px;
}

.home-feature-grid .feature-card:nth-child(1) h3,
.home-feature-grid .feature-card:nth-child(2) h3,
.home-feature-grid .feature-card:nth-child(3) h3,
.home-feature-grid .feature-card:nth-child(8) h3 {
  font-size: 1.14rem;
}

.feature-preview {
  display: block;
  order: -1;
  width: 100%;
  height: 168px;
  margin: 0 0 20px;
  padding: 8px;
  overflow: hidden;
  border: 1px solid rgba(0, 104, 183, 0.11);
  border-radius: 8px;
  background: linear-gradient(180deg, #fff, var(--bg-soft));
}

.feature-preview img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  border-radius: 6px;
  transform-origin: center;
}

.home-feature-grid .feature-card-fleet-management .feature-preview img {
  transform: scale(1.06);
}

.home-feature-grid .feature-card-smart-home .feature-preview img {
  transform: scale(1.34);
}

.home-feature-grid .feature-card-user-management .feature-preview img {
  transform: scale(1.14);
}

.home-feature-grid .feature-card-app-sdk .feature-preview img {
  transform: scale(1.08);
}

.home-feature-grid .feature-card-integrations .feature-preview img {
  transform: scale(1.12);
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(109, 206, 221, 0.45);
  box-shadow: var(--shadow-soft);
}

.feature-card.tall {
  min-height: 420px;
}

.feature-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
}

.page-hero-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
}

.page-hero-icon .icon {
  width: 26px;
  height: 26px;
}

.panel-icon,
.use-case-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
}

.feature-card p {
  margin: 14px 0 20px;
}

.feature-card h2 {
  font-size: clamp(1.32rem, 2.1vw, 1.62rem);
  line-height: 1.14;
}

.feature-card h3,
.docs-card h3,
.use-case-list h3,
.detail-panel h3 {
  font-size: 1.14rem;
  line-height: 1.18;
}

.feature-card ul {
  margin: 0 0 24px;
  padding-left: 18px;
  color: var(--muted);
}

.feature-card li + li {
  margin-top: 8px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-weight: 780;
}

.architecture {
  width: 100%;
  max-width: none;
  padding: 82px max(20px, calc((100vw - 1160px) / 2));
  background: var(--bg-panel);
}

.flow {
  display: grid;
  grid-template-columns: 1fr 44px 1fr 44px 1fr;
  align-items: stretch;
  margin-top: 32px;
}

.flow-node {
  min-height: 220px;
  padding: 26px;
  border: 1px solid rgba(109, 206, 221, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset;
}

.flow-node-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.flow-icon {
  width: 48px;
  height: 48px;
}

.flow-number {
  display: inline-flex;
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.flow-node strong {
  display: block;
  color: var(--navy);
  font-size: 1.15rem;
}

.node-modules,
.architecture-rails,
.cta-interest-list,
.surface-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.node-modules {
  margin-top: 22px;
}

.node-modules > span,
.architecture-rails > span,
.cta-interest-list > span,
.surface-strip > span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 7px 10px;
  border: 1px solid rgba(0, 104, 183, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--navy);
  font-size: 0.82rem;
  font-weight: 720;
}

.module-icon {
  display: inline-flex;
  flex: 0 0 auto;
  color: var(--brand);
}

.module-icon .icon {
  width: 15px;
  height: 15px;
}

.architecture-rails {
  margin-top: 18px;
}

.architecture-rails > span {
  background: rgba(255, 255, 255, 0.62);
}

.flow-line {
  align-self: center;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), rgba(109, 206, 221, 0.1));
}

.brand-film {
  width: 100%;
  max-width: none;
  padding: 84px max(20px, calc((100vw - 1160px) / 2));
  background: linear-gradient(180deg, #fff 0%, #f2f9fa 100%);
}

.brand-film-shell {
  display: grid;
  width: 100%;
  max-width: 1160px;
  grid-template-columns: minmax(0, 0.44fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
  margin: 0 auto;
}

.brand-film-copy,
.brand-film-frame {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.brand-film-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 30px;
}

.brand-film-copy h2 {
  max-width: 560px;
  font-size: clamp(1.75rem, 3vw, 2.45rem);
}

.brand-film-copy p:not(.eyebrow) {
  margin: 18px 0 0;
}

.brand-film-points {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.brand-film-points span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--navy);
  font-weight: 740;
}

.brand-film-frame {
  position: relative;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  justify-self: stretch;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  padding: 10px;
  background:
    radial-gradient(circle at top right, rgba(109, 206, 221, 0.16), transparent 42%),
    linear-gradient(180deg, #fff, var(--bg-soft));
}

.brand-film-frame video {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 8px;
  background: var(--navy);
  object-fit: cover;
}

@media (max-width: 1280px) {
  .brand-film-shell {
    grid-template-columns: 1fr;
  }
}

.use-case-list,
.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.use-case-list article,
.detail-panel,
.form-card,
.contact-context {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.use-case-list article {
  min-height: 210px;
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 38px;
  margin-bottom: 72px;
  padding: 34px;
  border: 1px solid rgba(109, 206, 221, 0.18);
  border-radius: 10px;
  background: linear-gradient(135deg, #f7fbfc, #e7f6f7);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

.cta-band h2 {
  font-size: clamp(1.8rem, 3vw, 2.55rem);
}

.cta-interest-list {
  margin-top: 18px;
}

.cta-interest-list > span {
  background: rgba(255, 255, 255, 0.74);
}

.surface-strip {
  margin-top: 22px;
}

.deployment-section {
  width: 100%;
  max-width: none;
  padding: 84px max(20px, calc((100vw - 1160px) / 2));
  background: linear-gradient(180deg, #fff 0%, #f4f9fa 100%);
}

.deployment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 34px;
}

.deployment-grid article {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  align-items: flex-start;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(216, 238, 240, 0.64) 0 56px, #fff 56px),
    #fff;
  box-shadow: var(--shadow-soft);
}

.deployment-grid h3 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.15;
}

.deployment-grid p:not(.card-kicker) {
  margin-bottom: 24px;
}

.deployment-grid .button {
  margin-top: auto;
}

.page-hero {
  padding: 78px 0 44px;
}

.page-hero.compact {
  max-width: 920px;
  margin-left: max(20px, calc((100vw - 1160px) / 2));
}

.feature-detail {
  padding-bottom: 64px;
}

.feature-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(320px, 0.96fr);
  gap: clamp(24px, 4vw, 54px);
  align-items: center;
}

.feature-hero-grid-single {
  grid-template-columns: 1fr;
}

.feature-hero-copy {
  min-width: 0;
}

.source-link {
  margin: 18px 0 0;
}

.source-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-weight: 700;
}

.source-link .icon {
  width: 18px;
  height: 18px;
}

.feature-visual {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background:
    radial-gradient(circle at top left, rgba(0, 104, 183, 0.16), transparent 40%),
    linear-gradient(180deg, #ffffff, #eff8f9);
  box-shadow: var(--shadow);
}

.feature-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
}

.detail-grid {
  align-items: stretch;
}

.detail-panel {
  min-height: 300px;
}

.detail-panel > p:not(.eyebrow) {
  margin: 14px 0 0;
}

.accent-panel {
  background: var(--bg-panel);
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  margin: 0 0 14px;
  padding-left: 26px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand);
}

.detail-table {
  margin-top: 30px;
}

.supplemental-detail-grid {
  margin-top: 0;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(360px, 1fr);
  gap: 22px;
  padding: 0 0 82px;
}

.contact-context {
  background: var(--bg-panel);
}

.docs-entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.docs-card {
  min-height: 0;
}

.docs-card h2,
.docs-card h3 {
  margin-top: 8px;
}

.docs-card p {
  margin-bottom: 18px;
}

.docs-hero {
  max-width: 920px;
}

.docs-hero-media {
  margin: 2rem 0 0;
}

.docs-hero-media img,
.docs-content-image {
  display: block;
  width: 100%;
  max-width: 760px;
  border-radius: 8px;
}

.docs-content {
  display: grid;
  gap: 1rem;
}

.docs-content h2,
.docs-content h3 {
  max-width: 760px;
}

.docs-content p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.docs-structure {
  border-top: 1px solid var(--line);
}

form {
  display: grid;
  gap: 16px;
}

.form-field {
  display: grid;
  gap: 7px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-weight: 720;
}

.form-field label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 12px;
  line-height: 1.4;
}

label em {
  color: #b42318;
  font-size: 0.88rem;
  font-style: normal;
  font-weight: 650;
}

.form-error-summary {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid rgba(180, 35, 24, 0.2);
  border-radius: 8px;
  background: #fef3f2;
  color: #b42318;
  font-size: 0.95rem;
  font-weight: 650;
}

.form-error-summary p,
.form-error-summary ul {
  margin: 0;
}

.form-error-summary ul {
  display: grid;
  gap: 8px;
  margin-top: 10px;
  padding-left: 20px;
}

.form-error-summary a {
  color: var(--brand-dark);
  text-decoration: underline;
}

.honeypot-field {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--text);
  background: #fff;
  font: inherit;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(0, 104, 183, 0.14);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: #b42318;
  background: #fff7f7;
}

.admin-section {
  padding-top: 18px;
}

.admin-filters {
  display: grid;
  gap: 16px;
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.filter-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.filter-grid label,
.filter-actions,
.admin-summary {
  display: grid;
  gap: 8px;
}

.filter-grid span {
  color: var(--navy);
  font-size: 0.84rem;
  font-weight: 700;
}

.filter-actions {
  grid-auto-flow: column;
  justify-content: flex-start;
}

.admin-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
}

.admin-summary p,
.admin-actions p {
  margin: 0;
}

.admin-action-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.analytics-metric-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: 18px;
}

.analytics-metric-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f7fbfc);
}

.analytics-metric-label {
  margin: 0;
  color: var(--navy);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.analytics-metric-value {
  margin: 0;
  color: var(--brand-dark);
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 820;
  line-height: 1;
}

.analytics-metric-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.analytics-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.analytics-table-wrap table {
  min-width: 520px;
}

.analytics-subsection {
  padding-top: 10px;
}

.empty-copy {
  margin: 0;
  color: var(--muted);
}

code {
  color: var(--brand-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.manual-content img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
}

.manual-content {
  overflow-x: auto;
}

.manual-content table {
  min-width: 680px;
}

table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
  font-size: 0.94rem;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--navy);
  background: var(--bg-soft);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

td {
  color: var(--muted);
}

td a {
  color: var(--brand);
  font-weight: 680;
}

.empty-state {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.admin-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
}

.admin-pagination p {
  margin: 0;
  color: var(--navy);
  font-weight: 700;
}

.success-message {
  display: grid;
  gap: 16px;
}

.privacy-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.privacy-note a,
.privacy-legal-note a {
  color: var(--brand);
  font-weight: 760;
}

.search-section {
  padding-top: 34px;
}

.search-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(20px, 4vw, 42px);
  align-items: start;
}

.search-panel,
.search-answer,
.search-empty,
.search-sources {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.search-panel {
  position: sticky;
  top: 108px;
  padding: 22px;
}

.search-panel textarea {
  min-height: 150px;
  resize: vertical;
}

.search-actions {
  display: grid;
  gap: 12px;
}

.search-actions .primary-button {
  justify-content: center;
  width: 100%;
}

.search-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.search-results {
  display: grid;
  gap: 16px;
}

.search-answer,
.search-empty,
.search-sources {
  padding: 24px;
}

.search-answer h2,
.search-empty h2,
.search-sources h2 {
  margin: 0 0 10px;
  font-size: clamp(1.25rem, 2vw, 1.58rem);
}

.search-answer p,
.search-empty p {
  margin: 0;
  color: var(--muted);
}

.search-sources {
  display: grid;
  gap: 12px;
}

.search-source-card {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid rgba(0, 104, 183, 0.12);
  border-radius: 8px;
  background: var(--bg-soft);
}

.search-source-card a {
  color: var(--brand-dark);
  font-weight: 780;
}

.search-source-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.privacy-section {
  padding-top: 36px;
}

.privacy-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.privacy-grid h2,
.privacy-legal-note h2 {
  font-size: clamp(1.2rem, 2vw, 1.52rem);
}

.privacy-legal-note {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-top: 20px;
  padding: 26px;
  border: 1px solid rgba(0, 104, 183, 0.16);
  border-radius: 10px;
  background: linear-gradient(135deg, #f7fbfc, #e7f6f7);
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(220px, 0.78fr) minmax(0, 2.2fr);
  gap: clamp(28px, 5vw, 68px);
  padding: 38px 0 48px;
  border-top: 1px solid var(--line);
}

.footer-brand p {
  max-width: 300px;
  margin: 8px 0 0;
}

.footer-sitemap {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px;
}

.footer-sitemap-group h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-sitemap-group ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-sitemap-group a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.footer-sitemap-group a:hover {
  color: var(--brand);
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .intro,
  .platform-showcase-shell,
  .sample-ecosystem-band,
  .brand-film-shell,
  .principles-shell,
  .principle-panel,
  .contact-section,
  .feature-hero-grid,
  .search-layout {
    grid-template-columns: 1fr;
  }

  .search-panel {
    position: static;
  }

  .hero {
    min-height: 0;
    padding-top: 46px;
  }

  .platform-showcase-copy {
    padding: 26px;
  }

  .principle-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .privacy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid,
  .docs-entry-grid,
  .use-case-list,
  .detail-grid,
  .filter-grid,
  .deployment-grid,
  .analytics-metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-feature-grid .feature-card,
  .home-feature-grid .feature-card:nth-child(1),
  .home-feature-grid .feature-card:nth-child(2),
  .home-feature-grid .feature-card:nth-child(3),
  .home-feature-grid .feature-card:nth-child(8) {
    grid-column: span 1;
  }

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

  .flow-line {
    width: 2px;
    height: 28px;
    justify-self: center;
    background: linear-gradient(180deg, var(--brand), rgba(109, 206, 221, 0.1));
  }

  .cta-band,
  .admin-actions,
  .admin-pagination {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .footer-sitemap {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .admin-action-links {
    justify-content: flex-start;
  }

  .filter-actions {
    grid-auto-flow: row;
  }
}

@media (max-width: 620px) {
  .main-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 10px 16px;
    font-size: 0.9rem;
  }

  .language-nav {
    width: 100%;
    overflow-x: auto;
  }

  .hero,
  .section,
  .page-hero,
  .contact-section,
  .cta-band,
  .site-footer {
    width: min(100% - 28px, 1160px);
  }

  .hero,
  .principles-section,
  .brand-film,
  .deployment-section {
    width: 100%;
    padding-right: 14px;
    padding-left: 14px;
  }

  .footer-sitemap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 18px;
  }

  h1 {
    font-size: 2.55rem;
  }

  .icon-box {
    width: 40px;
    height: 40px;
  }

  .icon-box .icon {
    width: 20px;
    height: 20px;
  }

  .page-hero-icon {
    width: 48px;
    height: 48px;
  }

  .feature-grid,
  .docs-entry-grid,
  .use-case-list,
  .detail-grid,
  .filter-grid,
  .deployment-grid,
  .analytics-metric-grid,
  .principle-tabs,
  .principle-metrics {
    grid-template-columns: 1fr;
  }

  .home-feature-grid {
    grid-template-columns: 1fr;
  }

  .page-hero.compact {
    margin-left: auto;
  }

  .form-field label {
    align-items: flex-start;
    flex-direction: column;
  }

  .feature-card,
  .feature-card.tall {
    min-height: 0;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .page-hero.compact {
    margin-left: auto;
  }

  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .privacy-legal-note {
    flex-direction: column;
  }
}