:root {
  --brand-blue: #293358;
  --steel: #bfc4cb;
  --brand-blue-soft: #edf1f7;
  --text: #1d2432;
  --muted: #5a6477;
  --white: #ffffff;
  --line: rgba(41, 51, 88, 0.14);
  --shadow: 0 24px 60px rgba(41, 51, 88, 0.08);
  --radius: 22px;
  --container: 1200px;
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 30%, #f5f7fb 100%);
  color: var(--text);
  line-height: 1.6;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.narrow {
  width: min(760px, calc(100% - 2rem));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 180px;
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.96rem;
  color: var(--muted);
}

.main-nav a {
  transition: color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--brand-blue);
}

.nav-cta {
  margin-left: auto;
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--brand-blue);
  display: block;
  border-radius: 999px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.9rem 1.5rem;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--brand-blue);
  color: var(--white);
  box-shadow: 0 14px 26px rgba(41, 51, 88, 0.18);
}

.button-secondary {
  background: transparent;
  color: var(--brand-blue);
  border: 1px solid var(--line);
}

.hero {
  padding: 4.5rem 0 2rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--brand-blue);
}

h1, h2, h3 {
  margin: 0;
  color: var(--brand-blue);
  line-height: 1.05;
}

h1 {
  font-size: clamp(2.8rem, 5vw, 5rem);
  letter-spacing: -0.06em;
}

h2 {
  font-size: clamp(2.1rem, 3vw, 3.2rem);
  letter-spacing: -0.05em;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  letter-spacing: -0.04em;
}

.lede,
.intro-copy p,
.service-card p,
.case-card p,
.timeline-item p,
.split-copy p,
.promo-panel li,
.basic-page p,
.basic-page li {
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-copy {
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0;
  margin: 2rem 0 0;
  color: var(--brand-blue);
  font-weight: 600;
}

.hero-meta li {
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: rgba(41, 51, 88, 0.06);
  border: 1px solid rgba(41, 51, 88, 0.08);
}

.hero-visual {
  position: relative;
  min-height: 440px;
  display: grid;
  place-items: center;
}

.visual-panel {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.panel-main {
  width: min(100%, 560px);
  padding: 0;
}

.chip {
  display: none;
}

.system-grid {
  --tile-w: 150px;
  --tile-h: 104px;

  position: relative;
  width: min(100%, 660px);
  height: 390px;
  margin-top: 0.5rem;
  perspective: 2000px;
  transform-style: preserve-3d;
  overflow: visible;
  transform: none;
  animation: none;
}


.system-item {
  --sx: 0px;
  --sy: 0px;
  --sz: 0px;
  --tx: 0px;
  --ty: 0px;
  --tz: 0px;

  position: absolute;
  display: grid;
  place-items: center;
  width: var(--tile-w);
  height: var(--tile-h);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(234, 238, 244, 0.92));
  border: 1px solid rgba(41, 51, 88, 0.09);
  border-radius: 18px;
  color: var(--brand-blue);
  font-weight: 700;
  text-align: center;
  padding: 0.6rem;
  box-shadow: 0 12px 24px rgba(41, 51, 88, 0.07);
  opacity: 1;
  transform-origin: center center;
  animation: none;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease, background 220ms ease, filter 220ms ease;
  will-change: transform, box-shadow, filter;
  overflow: visible;
}

.system-item:nth-child(1) {
  --sx: -220px;
  --sy: 56px;
  --sz: -160px;
  top: 6px;
  left: 20px;
}

.system-item:nth-child(2) {
  --sx: -60px;
  --sy: 16px;
  --sz: -120px;
  top: 6px;
  left: 190px;
}

.system-item:nth-child(3) {
  --sx: 100px;
  --sy: 18px;
  --sz: -100px;
  top: 6px;
  left: 360px;
}

.system-item:nth-child(4) {
  --sx: -220px;
  --sy: 90px;
  --sz: -140px;
  top: 130px;
  left: 98px;
}

.system-item:nth-child(5) {
  --sx: -70px;
  --sy: 84px;
  --sz: -120px;
  top: 130px;
  left: 268px;
}

.system-item:nth-child(6) {
  --sx: 80px;
  --sy: 110px;
  --sz: -120px;
  top: 130px;
  left: 438px;
}

.system-item:nth-child(7) {
  --sx: -160px;
  --sy: 150px;
  --sz: -140px;
  top: 254px;
  left: 20px;
}

.system-item:nth-child(8) {
  --sx: 24px;
  --sy: 160px;
  --sz: -110px;
  top: 254px;
  left: 190px;
}

.system-item:nth-child(9) {
  --sx: 200px;
  --sy: 150px;
  --sz: -120px;
  top: 254px;
  left: 360px;
}

.system-item:hover,
.system-item:focus-visible,
.system-item.is-active {
  animation: none;
  opacity: 1;
  transform: translateY(-8px) scale(1.05);
  background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(240, 245, 250, 1));
  border-color: rgba(41, 51, 88, 0.12);
  box-shadow: 0 20px 32px rgba(41, 51, 88, 0.12);
  filter: brightness(1.03);
  z-index: 30;
}

.system-grid:hover .system-item {
  box-shadow: 0 16px 28px rgba(41, 51, 88, 0.07);
}

.system-grid:hover .system-item:hover {
  box-shadow: 0 20px 36px rgba(41, 51, 88, 0.12);
}

.panel-side {
  position: absolute;
  right: -10px;
  bottom: 25px;
  width: 200px;
  padding: 1rem 1rem 0.75rem;
}

.mini-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 1rem;
}

.mini-stat strong {
  font-size: 2.6rem;
  color: var(--brand-blue);
  line-height: 1;
}

.mini-stat span {
  color: var(--muted);
}

.line-chart {
  display: flex;
  align-items: end;
  gap: 0.5rem;
  height: 90px;
  padding-top: 0.4rem;
}

.line-chart span {
  display: block;
  width: 100%;
  background: linear-gradient(180deg, rgba(41, 51, 88, 0.95), rgba(191, 196, 203, 0.8));
  border-radius: 999px 999px 0 0;
}

.line-chart span:nth-child(1) { height: 40%; }
.line-chart span:nth-child(2) { height: 55%; }
.line-chart span:nth-child(3) { height: 65%; }
.line-chart span:nth-child(4) { height: 80%; }
.line-chart span:nth-child(5) { height: 100%; }

.section {
  padding: 5rem 0;
}

.section-heading {
  margin-bottom: 2rem;
}

.section-heading {
  margin-bottom: 2rem;
}

.section.intro .section-heading,
.section.intro .intro-copy,
.section.intro .intro-copy p {
  text-align: left;
}

.intro-copy {
  font-size: 1.15rem;
}

.card-grid {
  display: grid;
  gap: 1.25rem;
}

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

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card,
.case-card,
.promo-panel,
.basic-page,
.case-page,
.info-block {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(41, 51, 88, 0.09);
  border-radius: var(--radius);
  box-shadow: 0 18px 38px rgba(41, 51, 88, 0.04);
}

.service-card {
  padding: 1.75rem;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 1rem;
  border-radius: 14px;
  background: rgba(41, 51, 88, 0.06);
  color: var(--brand-blue);
  font-weight: 700;
}

.integration-layout {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.integration-layout {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.integration-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 120px;
  padding: 1rem;
  border: 1px solid rgba(41, 51, 88, 0.12);
  background: linear-gradient(180deg, rgba(237, 241, 247, 0.7), rgba(255, 255, 255, 0.95));
  border-radius: 18px;
  color: var(--brand-blue);
  font-weight: 700;
  text-align: center;
}

.link-arrow {
  color: var(--steel);
  font-size: 1.5rem;
}

.cases-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.case-grid .case-card {
  min-width: 0;
  width: 100%;
  height: 100%;
  flex: 1 1 0;
}

.case-slider-wrap {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 52px;
  gap: 1rem;
  align-items: center;
}

.case-slider {
  overflow: hidden;
  position: relative;
}

.case-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 0.5rem;
}

.case-track::-webkit-scrollbar {
  display: none;
}

.case-card {
  position: relative;
  min-width: min(100%, 360px);
  scroll-snap-align: start;
  padding: 1.5rem;
  flex: 0 0 min(100%, 360px);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.case-card:hover,
.case-card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(41, 51, 88, 0.18);
  box-shadow: 0 24px 52px rgba(41, 51, 88, 0.08);
}

.case-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(41, 51, 88, 0.04), rgba(191, 196, 203, 0.12));
  opacity: 0;
  transition: opacity var(--transition);
}

.case-card:hover::before,
.case-card:focus-within::before {
  opacity: 1;
}

.case-card-content {
  position: relative;
  z-index: 1;
}

.case-card-link {
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: inherit;
}

.case-card-link:focus-visible {
  outline: 2px solid rgba(41, 51, 88, 0.6);
  outline-offset: -2px;
}

.case-index {
  color: var(--steel);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  margin-bottom: 1rem;
}

.case-link {
  margin-top: 1rem;
  display: inline-flex;
  color: var(--brand-blue);
  font-weight: 700;
  position: relative;
  z-index: 3;
}

.slider-btn {
  width: 52px;
  height: 52px;
  border: 1px solid rgba(41, 51, 88, 0.1);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  color: var(--brand-blue);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.slider-btn:hover,
.slider-btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(41, 51, 88, 0.08);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(41, 51, 88, 0.09);
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
}

.timeline-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: rgba(41, 51, 88, 0.06);
  border-radius: 12px;
  color: var(--brand-blue);
  font-weight: 700;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.tag-list span {
  border: 1px solid rgba(41, 51, 88, 0.1);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.8);
  color: var(--brand-blue);
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.promo-panel {
  padding: 2rem;
}

.promo-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.5rem;
}

.site-footer {
  padding: 2rem 0 1.4rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
}

.footer-inner,
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-inner {
  padding-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  color: var(--muted);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-brand img {
  height: 32px;
}

/* Case pages */
.case-page {
  padding: 2.5rem 1.5rem;
  margin: 3rem auto 5rem;
  width: min(1200px, calc(100% - 2rem));
}

.case-backlink,
.case-site-link,
.case-link {
  transition: transform var(--transition), color var(--transition), opacity var(--transition);
}

.case-backlink {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--brand-blue);
  font-weight: 700;
  text-decoration: none;
}

.case-site-link {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--brand-blue);
  font-weight: 700;
  text-decoration: none;
}

.case-backlink:hover,
.case-backlink:focus-visible,
.case-site-link:hover,
.case-site-link:focus-visible,
.case-link:hover,
.case-link:focus-visible {
  transform: translateY(-2px);
  text-decoration: none;
}

.case-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.case-summary {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 1.5rem;
  align-items: stretch;
}

.case-summary-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-hero .title-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.case-meta span,
.case-detail {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(41, 51, 88, 0.1);
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  background: rgba(41, 51, 88, 0.04);
  color: var(--brand-blue);
  font-size: 0.86rem;
  font-weight: 600;
}

.case-visual {
  min-height: 320px;
  border-radius: 24px;
  background: linear-gradient(150deg, rgba(41, 51, 88, 0.1), rgba(191, 196, 203, 0.25));
  border: 1px solid rgba(41, 51, 88, 0.1);
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--brand-blue);
  font-weight: 700;
  padding: 1.5rem;
}

.case-visual span {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.8;
}

.case-layout {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.info-block {
  padding: 1.5rem;
}

.info-block h3 {
  margin-bottom: 0.8rem;
}

.info-block ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.basic-page {
  width: min(860px, calc(100% - 2rem));
  margin: 4rem auto 6rem;
  padding: 2rem 1.5rem;
}

.basic-page h1 {
  margin-bottom: 1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 640px) {
  .system-grid {
    --tile-w: 150px;
    --tile-h: 104px;
    width: min(100%, 660px);
    height: 390px;
  }

  .system-item {
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    padding: 0.5rem;
    border-radius: 14px;
  }

  .system-item::before {
    border-radius: 14px;
  }
}

@media (max-width: 1024px) {
  .hero-inner,
  .split,
  .case-hero,
  .case-layout,
  .three-up,
  .four-up,
  .case-grid,
  .integration-layout {
    grid-template-columns: 1fr;
  }

  .case-slider-wrap {
    grid-template-columns: 1fr;
  }

  .slider-btn {
    display: none;
  }

  .main-nav {
    position: absolute;
    top: 82px;
    left: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-cta {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 3rem;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .promo-panel ul {
    grid-template-columns: 1fr;
  }

  .footer-inner,
  .footer-bottom,
  .cases-header {
    flex-direction: column;
    align-items: flex-start;
  }
}