:root {
  --bg: #050c1f;
  --bg-soft: #0b1430;
  --panel: rgba(11, 20, 48, 0.72);
  --panel-strong: rgba(13, 23, 52, 0.94);
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.66);
  --line: rgba(255, 255, 255, 0.1);
  --accent: #9fc1ff;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

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

.case-page {
  position: relative;
  min-height: 100vh;
}

.case-page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 18%, rgba(88, 131, 255, 0.08), transparent 24%),
    radial-gradient(circle at 82% 14%, rgba(73, 183, 255, 0.06), transparent 18%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
  opacity: 0.6;
}

.nav {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 26px 60px;
  z-index: 10;
}

.logo {
  display: inline-flex;
  align-items: center;
  max-width: 150px;
}

.logo img {
  display: block;
  width: 100%;
  height: auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 48px;
  height: 48px;
  margin-left: auto;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  background: rgba(7, 16, 38, 0.78);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle span + span {
  margin-top: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}

.nav-link {
  padding: 10px 0;
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  left: -18px;
  right: -18px;
  height: 14px;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-dropdown-toggle::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 180ms ease;
}

.nav-dropdown:hover .nav-dropdown-toggle::after,
.nav-dropdown:focus-within .nav-dropdown-toggle::after {
  transform: translateY(1px) rotate(225deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  width: max-content;
  min-width: 250px;
  display: grid;
  gap: 4px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.045)),
    rgba(7, 16, 38, 0.96);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 11px 14px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.82);
  white-space: nowrap;
  transition: background 180ms ease, color 180ms ease;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible {
  background: rgba(159, 193, 255, 0.12);
  color: #ffffff;
}

.nav-btn,
.case-cta,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
}

.nav-btn,
.case-cta {
  background: rgba(255, 255, 255, 0.94);
  color: #081121;
}

.secondary-btn {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.88);
}

.case-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  padding: 148px 60px 96px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(5, 12, 31, 0.28) 0%, rgba(5, 12, 31, 0.88) 100%),
    radial-gradient(circle at 50% 0%, rgba(32, 78, 190, 0.22), transparent 36%),
    linear-gradient(180deg, #071128 0%, #050c1f 100%);
  mask-image: linear-gradient(180deg, black 0%, black 70%, rgba(0, 0, 0, 0.34) 86%, transparent 100%);
}

.case-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.012) 18%, rgba(255, 255, 255, 0) 46%),
    linear-gradient(180deg, rgba(4, 10, 24, 0.08) 0%, rgba(4, 10, 24, 0.22) 34%, rgba(4, 10, 24, 0.58) 64%, rgba(5, 12, 31, 0.92) 100%),
    var(--case-image) center center / cover no-repeat;
  opacity: 0.9;
  mask-image: linear-gradient(180deg, black 0%, black 68%, rgba(0, 0, 0, 0.36) 84%, transparent 100%);
}

.case-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 74% 20%, var(--case-accent-soft, rgba(102, 171, 255, 0.18)), transparent 24%),
    radial-gradient(circle at 26% 88%, rgba(255, 255, 255, 0.05), transparent 22%);
  pointer-events: none;
  mask-image: linear-gradient(180deg, black 0%, black 70%, rgba(0, 0, 0, 0.36) 86%, transparent 100%);
}

.case-hero-inner,
.case-main {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.case-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 24px;
  align-items: center;
  min-height: calc(100vh - 244px);
  min-height: calc(100svh - 244px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-hero-copy h1 {
  max-width: 10ch;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.98;
}

.case-hero-copy p {
  max-width: 58ch;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.65;
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.case-hero-stats {
  display: grid;
  gap: 14px;
}

.hero-stat-card,
.case-panel,
.case-summary-card,
.case-result-card,
.case-process-card,
.related-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% -10%, rgba(255, 255, 255, 0.03), transparent 34%),
    radial-gradient(circle at 50% 118%, rgba(86, 136, 255, 0.08), transparent 36%),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-stat-card {
  padding: 22px;
}

.hero-stat-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
}

.hero-stat-card span {
  color: var(--muted);
  line-height: 1.5;
}

.case-main {
  position: relative;
  z-index: 1;
  margin-top: -34px;
  padding: 68px 0 88px;
}

.case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
  gap: 22px;
}

.case-content {
  display: grid;
  gap: 22px;
}

.case-panel {
  padding: 30px;
}

.case-panel h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.02;
}

.case-panel p,
.case-panel li {
  color: var(--muted);
  line-height: 1.7;
}

.case-panel p + p,
.case-panel ul + p,
.case-panel p + ul {
  margin-top: 16px;
}

.case-panel ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

.case-panel li {
  position: relative;
  padding-left: 18px;
}

.case-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
}

.case-kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.case-summary-card,
.case-result-card,
.case-process-card {
  padding: 22px;
}

.case-summary-card strong,
.case-result-card strong,
.case-process-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.case-summary-card span,
.case-result-card span,
.case-process-card span {
  color: var(--muted);
  line-height: 1.55;
}

.case-sidebar {
  display: grid;
  gap: 22px;
}

.case-meta-list {
  display: grid;
  gap: 14px;
}

.case-meta-item {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.case-meta-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.case-meta-item span {
  display: block;
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-meta-item strong,
.related-card strong {
  font-size: 16px;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-tags span {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
}

.related-list {
  display: grid;
  gap: 12px;
}

.related-card {
  padding: 18px;
}

.related-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.5;
  font-size: 14px;
}

.site-footer {
  width: 100%;
  margin: 18px 0 0;
  padding: 10px 20px 40px;
  color: rgba(255, 255, 255, 0.68);
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(180px, 0.8fr));
  gap: 28px;
  padding: 24px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.005));
}

.footer-brand {
  display: grid;
  gap: 14px;
  max-width: 42ch;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  width: min(168px, 100%);
  opacity: 0.95;
}

.footer-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.footer-brand p {
  line-height: 1.65;
}

.footer-group {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-label {
  margin-bottom: 2px;
  color: rgba(184, 199, 255, 0.82);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-group a {
  color: rgba(255, 255, 255, 0.78);
  transition: color 180ms ease, transform 180ms ease;
}

.footer-group a:hover {
  color: #ffffff;
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 40px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.46);
}

@media (max-width: 980px) {
  .nav {
    padding-left: 32px;
    padding-right: 32px;
  }

  .case-hero-inner,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .case-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-shell {
    grid-template-columns: 1fr 1fr;
    padding-left: 24px;
    padding-right: 24px;
  }

  .footer-brand {
    max-width: none;
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .nav {
    gap: 16px;
  }

  .nav-links {
    flex: 1 1 100%;
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .nav-dropdown-menu {
    left: 0;
    transform: translateY(8px);
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown:focus-within .nav-dropdown-menu {
    transform: translateY(0);
  }

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

  .case-hero {
    padding-left: 32px;
    padding-right: 32px;
    padding-top: 148px;
  }

  .case-hero-inner,
  .case-main {
    width: min(100%, 900px);
  }

  .case-hero-copy p {
    max-width: 100%;
  }

  .case-hero-stats,
  .case-kpi-grid {
    grid-template-columns: 1fr;
  }

  .footer-shell,
  .footer-bottom {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (max-width: 720px) {
  .nav,
  .case-hero {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav {
    flex-wrap: wrap;
    align-items: center;
    align-content: flex-start;
    gap: 14px;
  }

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

  .nav-links {
    display: none;
    width: 100%;
    order: 3;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-dropdown {
    display: grid;
    width: 100%;
  }

  .nav-dropdown::after {
    display: none;
  }

  .nav-dropdown-toggle {
    justify-content: space-between;
  }

  .nav-dropdown-toggle::after {
    transform: translateY(-2px) rotate(45deg);
  }

  .nav-dropdown-menu {
    position: static;
    width: 100%;
    min-width: 0;
    gap: 2px;
    margin-top: 2px;
    padding: 4px 0 4px 14px;
    border: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown:focus-within .nav-dropdown-menu {
    transform: none;
  }

  .nav-dropdown-menu a {
    padding: 9px 0;
    color: rgba(255, 255, 255, 0.68);
    white-space: normal;
  }

  .nav-dropdown-menu a:hover,
  .nav-dropdown-menu a:focus-visible {
    background: transparent;
    color: #ffffff;
  }

  .nav-btn {
    display: none;
    width: 100%;
    order: 4;
  }

  .nav.is-open .nav-links {
    display: grid;
  }

  .nav.is-open .nav-btn {
    display: inline-flex;
  }

  .nav.is-open {
    background:
      radial-gradient(circle at 16% 12%, rgba(92, 137, 255, 0.16), transparent 24%),
      linear-gradient(180deg, rgba(10, 18, 42, 0.98), rgba(7, 14, 34, 0.96));
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    padding-top: 16px;
    padding-bottom: 18px;
    box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
    backdrop-filter: blur(18px);
  }

  .nav.is-open .nav-links,
  .nav.is-open .nav-btn {
    position: relative;
    z-index: 1;
  }

  .nav.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .case-hero {
    min-height: 100vh;
    min-height: 100svh;
    padding-top: 156px;
    padding-bottom: 92px;
  }

  .case-hero-inner,
  .case-main {
    width: min(100% - 24px, 1200px);
  }

  .case-hero-inner {
    min-height: calc(100vh - 248px);
    min-height: calc(100svh - 248px);
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .case-cta,
  .secondary-btn {
    width: 100%;
  }

  .case-panel,
  .hero-stat-card,
  .case-summary-card,
  .case-result-card,
  .case-process-card,
  .related-card {
    padding: 22px;
    border-radius: 22px;
  }

  .site-footer {
    padding: 10px 12px 28px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 22px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    padding-left: 22px;
    padding-right: 22px;
  }
}

@media (max-width: 520px) {
  .case-hero {
    padding-left: 20px;
    padding-right: 20px;
    padding-top: 164px;
    padding-bottom: 76px;
  }

  .case-hero-inner,
  .case-main {
    width: 100%;
  }

  .case-hero-copy p {
    font-size: 16px;
    line-height: 1.65;
  }

  .case-panel,
  .hero-stat-card,
  .case-summary-card,
  .case-result-card,
  .case-process-card,
  .related-card,
  .footer-shell {
    padding-left: 18px;
    padding-right: 18px;
  }

  .footer-bottom {
    padding-left: 18px;
    padding-right: 18px;
  }
}