:root {
  --green: #00c880;
  --green-700: #009963;
  --green-800: #08714f;
  --green-950: #073b2b;
  --green-soft: #e7fff5;
  --ink: #142033;
  --ink-2: #27364f;
  --muted: #667085;
  --line: #d8dee8;
  --line-soft: #e8edf5;
  --wash: #f6f9fc;
  --paper: #ffffff;
  --shadow-sm: 0 10px 24px rgba(20, 32, 51, 0.08);
  --shadow-md: 0 18px 45px rgba(20, 32, 51, 0.12);
  --max: 1208px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
  letter-spacing: 0;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.merchant-cases-page {
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 0%, rgba(0, 200, 128, 0.11), transparent 25%),
    linear-gradient(180deg, #fbfffd 0%, #fff 38%, #f7fafc 100%);
}

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

.top-strip {
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
}

.top-strip .container {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.top-strip strong {
  color: #fff;
  font-weight: 800;
}

.top-links {
  display: flex;
  gap: 18px;
  white-space: nowrap;
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(216, 222, 232, 0.75);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand img {
  width: 166px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #2f3b4f;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-link,
.product-trigger {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 13px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #2f3b4f;
  font: inherit;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
  box-shadow: 0 8px 20px rgba(20, 32, 51, 0.05);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn.primary {
  border-color: var(--green);
  background: linear-gradient(135deg, var(--green), var(--green-700));
  color: #fff;
  box-shadow: 0 16px 34px rgba(0, 200, 128, 0.22);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.mobile-menu {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 24px;
}

.mobile-platform-nav {
  display: none;
  border-bottom: 1px solid var(--line-soft);
  background: #fff;
}

.mobile-platform-nav.open {
  display: block;
}

.mobile-platform-scroll {
  display: grid;
  grid-template-columns: repeat(5, minmax(150px, 1fr));
  gap: 10px;
  padding: 14px 0;
  overflow-x: auto;
}

.mobile-nav-card {
  display: grid;
  gap: 4px;
  min-height: 74px;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--wash);
}

.mobile-nav-card b {
  color: var(--ink);
  font-size: 14px;
}

.mobile-nav-card span {
  color: var(--muted);
  font-size: 12px;
}

.merchant-cases-section {
  padding: 88px 0;
}

.merchant-cases-hero {
  padding: 78px 0 70px;
  background:
    linear-gradient(135deg, rgba(231, 255, 245, 0.92), rgba(234, 243, 255, 0.62)),
    #fff;
  border-bottom: 1px solid var(--line-soft);
}

.merchant-cases-hero-inner {
  max-width: 860px;
}

.merchant-cases-kicker {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--green-800);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.merchant-cases-hero h1,
.merchant-cases-section h2 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
}

.merchant-cases-hero h1 {
  max-width: 720px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.04;
}

.merchant-cases-lead {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.75;
  font-weight: 760;
}

.merchant-cases-scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.merchant-cases-scene-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid rgba(0, 153, 99, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--green-800);
  font-size: 13px;
  font-weight: 900;
}

.merchant-cases-section-head {
  display: grid;
  gap: 10px;
  max-width: 740px;
  margin-bottom: 30px;
}

.merchant-cases-section-head.center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.merchant-cases-section h2 {
  font-size: clamp(32px, 4.6vw, 48px);
  line-height: 1.12;
}

.merchant-cases-section-copy {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 720;
}

.merchant-featured-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr 0.88fr;
  gap: 22px;
}

.merchant-featured-card,
.merchant-case-card {
  cursor: pointer;
}

.merchant-featured-card {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  text-align: left;
  min-height: 300px;
  border: 1px solid rgba(10, 76, 57, 0.12);
  border-radius: 22px;
  overflow: hidden;
  background: #0b2f28;
  color: inherit;
  font: inherit;
  box-shadow: var(--shadow-sm);
  isolation: isolate;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.merchant-featured-card:first-child {
  grid-row: span 2;
  min-height: 628px;
}

.merchant-featured-card img,
.merchant-case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.001);
  transition: transform 260ms ease;
}

.merchant-featured-card img {
  position: absolute;
  inset: 0;
}

.merchant-featured-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(5, 32, 26, 0.03) 20%, rgba(5, 25, 21, 0.2) 58%, rgba(5, 24, 20, 0.8) 100%);
}

.merchant-featured-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 24px;
  color: #fff;
}

.merchant-featured-card:first-child .merchant-featured-info {
  padding: 30px;
}

.merchant-featured-card h3 {
  margin: 10px 0 8px;
  color: #fff;
  font-size: 22px;
  line-height: 1.2;
}

.merchant-featured-card:first-child h3 {
  font-size: 30px;
}

.merchant-featured-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.55;
  font-weight: 760;
}

.merchant-featured-card:hover,
.merchant-featured-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.merchant-featured-card:hover img,
.merchant-featured-card:focus-visible img {
  transform: scale(1.025);
}

.merchant-featured-card:focus-visible,
.merchant-case-card:focus-visible {
  outline: 3px solid rgba(0, 200, 128, 0.42);
  outline-offset: 4px;
}

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

.merchant-case-badges span,
.merchant-case-featured {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
}

.merchant-featured-card .merchant-case-badges span,
.merchant-featured-card .merchant-case-featured {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.94);
}

.merchant-case-featured {
  background: var(--green-soft);
  color: var(--green-800);
}

.merchant-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 4px 0 28px;
}

.merchant-filter {
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: #fff;
  color: #344054;
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
}

.merchant-filter[aria-pressed="true"] {
  border-color: var(--green-950);
  background: var(--green-950);
  color: #fff;
}

.merchant-filter:focus-visible,
.btn:focus-visible,
.mobile-menu:focus-visible {
  outline: 3px solid rgba(0, 200, 128, 0.35);
  outline-offset: 3px;
}

.merchant-filter-count {
  color: currentColor;
  opacity: 0.72;
}

.merchant-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.merchant-case-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 0;
  text-align: left;
  min-height: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  color: inherit;
  font: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.merchant-case-card.is-entering {
  animation: merchantCaseFade 220ms ease both;
}

.merchant-case-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.merchant-case-card:hover img {
  transform: scale(1.025);
}

.merchant-case-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--wash);
}

.merchant-case-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
}

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

.merchant-case-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--wash);
  color: var(--green-800);
  font-size: 12px;
  font-weight: 900;
}

.merchant-case-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.22;
}

.merchant-case-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.62;
  font-weight: 700;
}

.merchant-case-card-action {
  margin-top: auto;
  color: var(--green-800);
  font-size: 13px;
  font-weight: 950;
}

.merchant-featured-card .merchant-case-card-action {
  display: inline-flex;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.9);
}

.merchant-case-empty {
  display: none;
  padding: 28px;
  border: 1px dashed var(--line);
  border-radius: 18px;
  background: #fff;
  color: var(--muted);
  font-weight: 800;
  text-align: center;
}

.merchant-cases-cta {
  padding: 0 0 92px;
}

.merchant-cases-cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px;
  border: 1px solid rgba(0, 153, 99, 0.16);
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 0%, rgba(0, 200, 128, 0.18), transparent 30%),
    linear-gradient(135deg, #073b2b, #096046);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.merchant-cases-cta-panel h2 {
  margin: 0 0 8px;
  color: #fff;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.14;
}

.merchant-cases-cta-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 16px;
  font-weight: 760;
}

.merchant-cases-cta-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 12px;
}

.merchant-cases-cta-actions .btn:not(.primary) {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

body.merchant-detail-open {
  position: fixed;
  width: 100%;
  overflow: hidden;
}

.merchant-detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(7, 20, 17, 0.52);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.merchant-detail-overlay[hidden] {
  display: none;
}

.merchant-detail-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.merchant-detail-dialog {
  position: relative;
  width: min(100%, 1040px);
  max-height: min(86vh, 720px);
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  overflow: hidden;
  border: 1px solid rgba(216, 222, 232, 0.88);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 34px 90px rgba(6, 34, 28, 0.24);
  transform: translateY(14px);
  transition: transform 240ms ease;
}

.merchant-detail-overlay.is-open .merchant-detail-dialog {
  transform: translateY(0);
}

.merchant-detail-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 4;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(216, 222, 232, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.merchant-detail-close:hover,
.merchant-detail-close:focus-visible,
.merchant-detail-secondary-close:focus-visible {
  outline: 3px solid rgba(0, 200, 128, 0.35);
  outline-offset: 3px;
}

.merchant-detail-close:hover {
  background: #f2f6f8;
}

.merchant-detail-media {
  min-height: 500px;
  background: var(--wash);
}

.merchant-detail-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.merchant-detail-content {
  display: flex;
  flex-direction: column;
  gap: 15px;
  overflow-y: auto;
  padding: 38px;
}

.merchant-detail-badges,
.merchant-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.merchant-detail-badges span,
.merchant-detail-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--wash);
  color: var(--green-800);
  font-size: 12px;
  font-weight: 950;
}

.merchant-detail-badges .merchant-case-featured {
  background: var(--green-soft);
}

.merchant-detail-content h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
}

.merchant-detail-short {
  margin: 0;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 860;
}

.merchant-detail-description {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
  font-weight: 720;
}

.merchant-detail-scene-note {
  margin-top: 8px;
  padding: 13px 14px;
  border: 1px solid rgba(0, 153, 99, 0.14);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(231, 255, 245, 0.9), rgba(246, 249, 252, 0.96));
  color: var(--green-800);
  font-size: 13px;
  line-height: 1.62;
  font-weight: 860;
}

.merchant-detail-secondary-close {
  align-self: flex-start;
  min-height: 42px;
  margin-top: auto;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

@keyframes merchantCaseFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1120px) {
  .nav,
  .header-actions .ghost,
  .top-links {
    display: none;
  }

  .mobile-menu {
    display: inline-flex;
  }

  .merchant-featured-grid {
    grid-template-columns: 1fr 1fr;
  }

  .merchant-featured-card:first-child {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 440px;
  }

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

@media (max-width: 720px) {
  .container {
    width: min(100% - 32px, var(--max));
  }

  .top-strip {
    display: none;
  }

  .brand img {
    width: 140px;
  }

  .header-actions .primary {
    display: none;
  }

  .merchant-cases-hero {
    padding: 56px 0 48px;
  }

  .merchant-cases-hero h1 {
    font-size: clamp(40px, 13vw, 54px);
  }

  .merchant-cases-lead {
    font-size: 16px;
  }

  .merchant-cases-scene-tags,
  .merchant-filter-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .merchant-cases-scene-tags::-webkit-scrollbar,
  .merchant-filter-row::-webkit-scrollbar {
    display: none;
  }

  .merchant-cases-scene-tags span,
  .merchant-filter {
    flex: 0 0 auto;
  }

  .merchant-cases-section {
    padding: 64px 0;
  }

  .merchant-featured-grid,
  .merchant-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .merchant-featured-card,
  .merchant-featured-card:first-child {
    min-height: 0;
    aspect-ratio: 4 / 3;
    border-radius: 18px;
  }

  .merchant-featured-card:first-child {
    aspect-ratio: 1.18 / 1;
  }

  .merchant-featured-info,
  .merchant-featured-card:first-child .merchant-featured-info {
    padding: 20px;
  }

  .merchant-featured-card h3,
  .merchant-featured-card:first-child h3,
  .merchant-case-card h3 {
    font-size: 20px;
  }

  .merchant-cases-cta {
    padding-bottom: 70px;
  }

  .merchant-cases-cta-panel,
  .merchant-cases-cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .merchant-cases-cta-panel {
    padding: 26px;
  }

  .merchant-cases-cta-actions .btn {
    width: 100%;
  }

  .merchant-detail-overlay {
    place-items: end center;
    padding: 14px 10px 0;
  }

  .merchant-detail-dialog {
    width: 100%;
    max-height: 92vh;
    grid-template-columns: 1fr;
    border-radius: 24px 24px 0 0;
    transform: translateY(32px);
  }

  .merchant-detail-dialog::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 50%;
    z-index: 5;
    width: 42px;
    height: 4px;
    border-radius: 999px;
    background: rgba(20, 32, 51, 0.18);
    transform: translateX(-50%);
  }

  .merchant-detail-close {
    top: 18px;
    right: 16px;
  }

  .merchant-detail-media {
    min-height: 0;
    height: 228px;
  }

  .merchant-detail-content {
    max-height: calc(92vh - 228px);
    gap: 14px;
    padding: 24px 20px calc(24px + env(safe-area-inset-bottom));
  }

  .merchant-detail-content h2 {
    font-size: 28px;
  }

  .merchant-detail-short {
    font-size: 15px;
  }
}

@media (max-width: 360px) {
  .merchant-detail-media {
    height: 210px;
  }

  .merchant-detail-content {
    max-height: calc(92vh - 210px);
  }

  .merchant-detail-scene-note {
    padding: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .merchant-case-card,
  .merchant-case-card img,
  .merchant-featured-card,
  .merchant-featured-card img,
  .merchant-detail-overlay,
  .merchant-detail-dialog {
    transition: none !important;
  }

  .btn:hover,
  .merchant-case-card:hover,
  .merchant-featured-card:hover {
    transform: none;
  }

  .merchant-case-card.is-entering {
    animation: none;
  }
}