@font-face {
  font-family: "D-DIN Digits";
  src: url("../../assets/fonts/D-DIN.ttf") format("truetype");
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  unicode-range: U+0030-0039;
}

@font-face {
  font-family: "D-DIN Digits";
  src: url("../../assets/fonts/D-DIN-Bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 600 900;
  font-display: swap;
  unicode-range: U+0030-0039;
}

:root {
  --color-primary: #3563ef;
  --color-primary-hover: #4c75f1;
  --color-primary-active: #2558f1;
  --color-primary-rgb: 53, 99, 239;
  --color-text-primary: #232d42;
  --color-text-secondary: #8a92a6;
  --color-text-auxiliary: #8a92a6;
  --color-text-rgb: 35, 45, 66;
  --color-divider: #eeeeee;
  --color-neutral-bg: #f2f2f2;
  --color-surface: #ffffff;
  --color-hero-bg: #ecf4ff;
  --color-section-bg: #edf3ff;
  --color-footer-start: #062d59;
  --color-footer-end: #071a34;
  --container: 1200px;
  --topbar-height: 64px;
  --grid-gap: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: "D-DIN Digits", "PingFang HK", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

body {
  margin: 0;
  padding-top: var(--topbar-height);
  color: var(--color-text-primary);
  background: var(--color-surface);
}

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

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

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--color-surface);
  background: var(--color-primary-active);
  transform: translateY(-160%);
}

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

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--topbar-height);
  border-bottom: 1px solid var(--color-divider);
  background: rgba(236, 245, 255, 0.92);
  backdrop-filter: blur(10px);
}

.topbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.brand__name {
  font-size: 20px;
  line-height: 1;
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
  font-size: 14px;
}

.nav a {
  padding: 10px 4px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--color-primary);
}

.topbar__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--color-surface);
  background: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  transition: transform 120ms ease, background 160ms ease, box-shadow 160ms ease;
}

.topbar__cta:hover {
  transform: translateY(-1px);
  background: var(--color-primary-active);
  box-shadow: 0 12px 24px rgba(var(--color-primary-rgb), 0.24);
}

.case-hero {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  background: var(--color-hero-bg);
}

.case-hero__media {
  position: absolute;
  inset: 0 0 0 42%;
}

.case-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-hero-bg) 0%, rgba(236, 244, 255, 0.82) 18%, rgba(236, 244, 255, 0.12) 62%, rgba(236, 244, 255, 0.18) 100%);
}

.case-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.case-hero__inner {
  position: relative;
  z-index: 1;
  min-height: 480px;
  padding: 24px 0 56px;
  display: flex;
  flex-direction: column;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 32px;
  font-size: 12px;
  color: var(--color-text-auxiliary);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.case-hero__content {
  width: min(620px, 58%);
  margin: auto 0;
}

.case-hero__eyebrow,
.section-heading__eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  border: 1px solid rgba(var(--color-primary-rgb), 0.24);
  border-radius: 999px;
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.64);
  font-size: 12px;
  font-weight: 700;
}

.case-hero h1 {
  margin: 18px 0 16px;
  max-width: 700px;
  font-size: 40px;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: 0;
}

.case-hero__content p {
  max-width: 560px;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

.case-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 42px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  transition: transform 120ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

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

.button--primary {
  color: var(--color-surface);
  background: var(--color-primary);
  box-shadow: 0 12px 28px rgba(var(--color-primary-rgb), 0.24);
}

.button--primary:hover {
  background: var(--color-primary-active);
  box-shadow: 0 16px 32px rgba(var(--color-primary-rgb), 0.3);
}

.button--secondary {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.72);
}

.button--secondary:hover {
  border-color: var(--color-primary-hover);
  background: var(--color-surface);
}

.case-meta {
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}

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

.case-meta__item {
  min-height: 104px;
  padding: 24px 32px;
  border-right: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

.case-meta__item:first-child {
  border-left: 1px solid var(--color-divider);
}

.case-meta__item span {
  font-size: 12px;
  color: var(--color-text-auxiliary);
}

.case-meta__item strong {
  font-size: 16px;
  font-weight: 600;
}

.detail-section {
  padding: 64px 0;
}

.detail-section--surface {
  background: var(--color-surface);
}

.detail-section--neutral {
  background: var(--color-neutral-bg);
}

.detail-section--outcomes {
  background: var(--color-section-bg);
}

.overview-grid,
.outcomes-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--grid-gap);
  align-items: start;
}

.overview-grid > .section-heading,
.outcomes-layout > .section-heading {
  grid-column: span 5;
}

.overview-copy,
.outcome-grid {
  grid-column: 7 / span 6;
}

.section-heading h2 {
  margin: 20px 0 0;
  max-width: 520px;
  font-size: 28px;
  line-height: 1.45;
  font-weight: 600;
}

.section-heading > p {
  max-width: 620px;
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
}

.section-heading--center {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-heading--center h2,
.section-heading--center p {
  margin-left: auto;
  margin-right: auto;
}

.overview-copy > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
}

.overview-copy h3 {
  margin: 28px 0 14px;
  font-size: 18px;
}

.goal-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.goal-list li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.7;
}

.goal-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 14px;
  height: 14px;
  border: 4px solid var(--color-primary);
  border-radius: 50%;
  background: var(--color-surface);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--grid-gap);
}

.capability-card {
  min-height: 220px;
  padding: 28px 24px;
  border: 1px solid var(--color-divider);
  border-radius: 8px;
  background: var(--color-surface);
  transition: transform 140ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.capability-card:hover {
  transform: translateY(-2px);
  border-color: rgba(var(--color-primary-rgb), 0.28);
  box-shadow: 0 16px 36px rgba(var(--color-text-rgb), 0.08);
}

.capability-card__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
}

.capability-card__icon img {
  width: 24px;
  height: 24px;
}

.capability-card h3 {
  margin: 22px 0 10px;
  font-size: 18px;
  line-height: 1.4;
  font-weight: 600;
}

.capability-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.outcome-grid {
  display: grid;
  gap: 16px;
}

.outcome-item {
  padding: 20px 24px;
  border-left: 3px solid var(--color-primary);
  background: rgba(255, 255, 255, 0.72);
}

.outcome-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
  font-weight: 600;
}

.outcome-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.case-pagination {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}

.case-pagination__inner {
  min-height: 120px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
}

.case-pagination__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-pagination__link--next {
  text-align: right;
}

.case-pagination__link span {
  color: var(--color-text-auxiliary);
  font-size: 12px;
}

.case-pagination__link strong {
  font-size: 16px;
  font-weight: 600;
}

.case-pagination__link:hover strong,
.case-pagination__all:hover {
  color: var(--color-primary);
}

.case-pagination__all {
  font-size: 14px;
  font-weight: 600;
}

.detail-cta {
  color: var(--color-surface);
  background: var(--color-primary);
}

.detail-cta__inner {
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.detail-cta h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 600;
}

.detail-cta p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
}

.button--light {
  color: var(--color-primary);
  background: var(--color-surface);
}

.button--light:hover {
  color: var(--color-primary-active);
  box-shadow: 0 14px 30px rgba(var(--color-text-rgb), 0.18);
}

.footer {
  color: rgba(255, 255, 255, 0.82);
  background: linear-gradient(180deg, var(--color-footer-start), var(--color-footer-end));
}

.footer__main {
  min-height: 190px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.footer__brand-head {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-surface);
  font-size: 24px;
}

.footer__brand-head img {
  width: 40px;
  height: 40px;
}

.footer__brand p,
.footer__brand span {
  display: block;
  margin: 12px 0 0;
  font-size: 14px;
}

.footer__nav {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 28px;
  font-size: 14px;
}

.footer__nav a:hover {
  color: var(--color-surface);
}

.footer__bottom {
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.footer__meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 12px;
  line-height: 1.6;
}

.footer__meta a:hover {
  color: var(--color-surface);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary-active);
  outline-offset: 3px;
}

.footer a:focus-visible,
.detail-cta a:focus-visible,
.topbar__cta:focus-visible {
  outline-color: var(--color-surface);
}

@media (max-width: 980px) {
  .nav {
    display: none;
  }

  .topbar__cta {
    margin-left: auto;
  }

  .case-hero__media {
    left: 30%;
    opacity: 0.7;
  }

  .case-hero__media::after {
    background: linear-gradient(90deg, var(--color-hero-bg) 0%, rgba(236, 244, 255, 0.92) 45%, rgba(236, 244, 255, 0.3) 100%);
  }

  .case-hero__content {
    width: min(620px, 78%);
  }

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

  .overview-grid > .section-heading,
  .outcomes-layout > .section-heading {
    grid-column: span 12;
  }

  .overview-copy,
  .outcome-grid {
    grid-column: span 12;
  }

  .overview-grid,
  .outcomes-layout {
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 32px);
  }

  .brand__mark {
    width: 30px;
    height: 30px;
  }

  .brand__name {
    font-size: 16px;
  }

  .topbar__cta {
    height: 34px;
    padding: 0 12px;
    font-size: 12px;
  }

  .case-hero,
  .case-hero__inner {
    min-height: 520px;
  }

  .case-hero__media {
    inset: 0;
    opacity: 0.46;
  }

  .case-hero__media::after {
    background: linear-gradient(180deg, rgba(236, 244, 255, 0.45) 0%, var(--color-hero-bg) 82%);
  }

  .case-hero__inner {
    padding: 16px 0 40px;
  }

  .breadcrumb {
    font-size: 11px;
  }

  .case-hero__content {
    width: 100%;
    margin-top: auto;
  }

  .case-hero h1 {
    margin-top: 14px;
    font-size: 28px;
  }

  .case-hero__content p {
    font-size: 14px;
    line-height: 1.7;
  }

  .case-hero__actions {
    gap: 10px;
    margin-top: 22px;
  }

  .button {
    min-width: 0;
    padding: 0 16px;
  }

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

  .case-meta__item,
  .case-meta__item:first-child {
    min-height: 82px;
    padding: 18px 0;
    border-right: 0;
    border-left: 0;
    border-bottom: 1px solid var(--color-divider);
  }

  .case-meta__item:last-child {
    border-bottom: 0;
  }

  .detail-section {
    padding: 48px 0;
  }

  .section-heading h2 {
    font-size: 24px;
  }

  .section-heading--center {
    margin-bottom: 28px;
    text-align: left;
  }

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

  .capability-card {
    min-height: 0;
    padding: 24px 20px;
  }

  .case-pagination__inner {
    min-height: 154px;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .case-pagination__all {
    grid-column: 1 / -1;
    grid-row: 1;
    text-align: center;
  }

  .detail-cta__inner {
    min-height: 230px;
    padding: 36px 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
  }

  .detail-cta h2 {
    font-size: 24px;
  }

  .footer__main {
    min-height: 0;
    padding: 36px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .footer__nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 16px 24px;
  }

  .footer__meta {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}