:root {
  --ink: #0d2438;
  --muted: #5f7082;
  --line: #dce6ee;
  --surface: #ffffff;
  --soft: #f3f8fb;
  --navy: #0d2f4f;
  --teal: #19a7a8;
  --teal-dark: #0b7d82;
  --amber: #f4a62a;
  --green: #2d9b6c;
  --shadow: 0 24px 70px rgba(13, 36, 56, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f7fbfd;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 230, 238, 0.86);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.nav-shell {
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--navy);
  font-size: 19px;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--navy);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #40566b;
  font-size: 15px;
}

.site-nav a {
  padding: 10px 14px;
  border-radius: 8px;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--navy);
  background: #edf6f7;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
}

.nav-cta:hover {
  background: #17466f;
}

.hero {
  min-height: calc(100vh - 128px);
  padding: 86px 0 74px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, #f8fcfd 0%, #eef7f4 46%, #fdf7ec 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0 34%, rgba(25, 167, 168, 0.1) 34% 35%, transparent 35% 100%),
    linear-gradient(90deg, rgba(13, 47, 79, 0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(13, 47, 79, 0.04) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 500px) minmax(520px, 1fr);
  gap: 58px;
  align-items: center;
}

.hero-layout {
  min-height: 560px;
}

.hero-copy-block {
  padding: 28px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--teal-dark);
  font-size: 14px;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--teal);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  max-width: 620px;
  font-size: clamp(42px, 5vw, 66px);
  line-height: 1.08;
  font-weight: 800;
}

h1 span {
  display: block;
}

.hero-copy {
  margin-bottom: 30px;
  color: #3d5164;
  font-size: 20px;
  line-height: 1.8;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.button.primary {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 12px 32px rgba(25, 167, 168, 0.25);
}

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

.button.secondary {
  border-color: #b9cbd8;
  background: rgba(255, 255, 255, 0.78);
  color: var(--navy);
}

.button.secondary:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
}

.hero-metrics {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.metric {
  min-height: 106px;
  padding: 18px;
  border: 1px solid rgba(25, 167, 168, 0.2);
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 14px 38px rgba(13, 36, 56, 0.06);
}

.metric strong {
  display: block;
  color: var(--navy);
  font-size: 22px;
  line-height: 1.2;
}

.metric span {
  color: var(--muted);
  font-size: 14px;
}

.hero-showcase {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  margin-right: calc((1180px - min(1180px, 100vw - 40px)) / -2);
}

.hero-showcase::before {
  display: none;
}

.hero-product-image {
  width: min(780px, 58vw);
  max-width: none;
  border-radius: 8px;
  filter: drop-shadow(0 26px 42px rgba(13, 47, 79, 0.16));
}

.proof-strip {
  position: relative;
  z-index: 2;
  margin-top: -30px;
  padding: 0 0 38px;
}

.proof-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid rgba(13, 47, 79, 0.12);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 60px rgba(13, 36, 56, 0.12);
}

.proof-inner div {
  min-height: 104px;
  padding: 22px 24px;
}

.proof-inner div + div {
  border-left: 1px solid var(--line);
}

.proof-inner strong,
.proof-inner span {
  display: block;
}

.proof-inner strong {
  color: var(--navy);
  font-size: 18px;
}

.proof-inner span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 88px 0;
}

.section.soft {
  background: var(--soft);
}

.section.white {
  background: #fff;
}

.section.compact {
  padding: 62px 0;
}

.section.service-mode {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(115deg, #09243a 0%, #0d2f4f 48%, #0a6f70 100%);
}

.section.service-mode::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, transparent 0 44%, rgba(244, 166, 42, 0.18) 44% 45%, transparent 45% 100%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: auto, 66px 66px, 66px 66px;
  pointer-events: none;
}

.section.service-mode .container {
  position: relative;
  z-index: 1;
}

.section.service-mode .section-kicker {
  color: #78ece8;
}

.section.service-mode .lead {
  color: rgba(255, 255, 255, 0.74);
}

.section.service-mode .price-card {
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.96);
}

.section.service-mode .price-card h3 {
  color: var(--ink);
}

.section.service-mode .price-card.featured {
  border-color: rgba(120, 236, 232, 0.82);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.section-head {
  max-width: 780px;
  margin-bottom: 38px;
}

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

.section-kicker {
  margin-bottom: 10px;
  color: var(--teal-dark);
  font-weight: 800;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.18;
}

.lead {
  color: var(--muted);
  font-size: 18px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.value-card,
.feature-link,
.price-card,
.content-card,
.scenario-card,
.step-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 40px rgba(13, 36, 56, 0.06);
}

.value-card {
  padding: 26px;
  min-height: 236px;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border-radius: 8px;
  background: #e8f7f7;
  color: var(--teal-dark);
}

.card-icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.value-card h3,
.feature-link h3,
.price-card h3,
.content-card h3,
.scenario-card h3,
.step-card h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.35;
}

.value-card p,
.feature-link p,
.price-card p,
.content-card p,
.scenario-card p,
.step-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.feature-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-link {
  min-height: 220px;
  padding: 26px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.feature-link:hover {
  transform: translateY(-4px);
  border-color: rgba(25, 167, 168, 0.48);
  box-shadow: var(--shadow);
}

.link-more {
  display: inline-flex;
  margin-top: 20px;
  color: var(--teal-dark);
  font-weight: 800;
}

.pricing-preview,
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.price-card {
  position: relative;
  padding: 30px;
}

.price-card.featured {
  border-color: rgba(25, 167, 168, 0.65);
  box-shadow: var(--shadow);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 18px;
  padding: 0 10px;
  border-radius: 999px;
  background: #e8f7f7;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 800;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 18px 0;
  color: var(--navy);
}

.price strong {
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1;
}

.price span {
  color: var(--muted);
  font-weight: 700;
}

.price-note {
  min-height: 86px;
  color: var(--muted);
}

.list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.list li {
  position: relative;
  margin: 10px 0;
  padding-left: 24px;
  color: #40566b;
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

.page-hero {
  padding: 82px 0 60px;
  background:
    linear-gradient(120deg, rgba(13, 47, 79, 0.96), rgba(12, 104, 113, 0.88)),
    #0d2f4f;
  color: #fff;
}

.page-hero .lead {
  color: rgba(255, 255, 255, 0.78);
}

.page-hero h1 {
  max-width: 780px;
}

.crumb {
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 700;
}

.crumb a {
  color: #fff;
}

.anchor-nav {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.anchor-nav a {
  padding: 9px 13px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.88);
}

.anchor-nav a:hover {
  border-color: rgba(255, 255, 255, 0.58);
  color: #fff;
}

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

.content-card {
  padding: 28px;
}

.content-card.wide {
  grid-column: span 2;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

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

.comparison {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(13, 36, 56, 0.06);
}

.comparison th,
.comparison td {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.comparison th {
  color: var(--navy);
  background: #edf6f7;
}

.comparison tr:last-child td {
  border-bottom: 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.step-card {
  padding: 26px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  font-weight: 800;
}

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

.scenario-card {
  padding: 30px;
}

.cta-band {
  padding: 70px 0;
  background: var(--navy);
  color: #fff;
}

.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-band h2 {
  margin-bottom: 10px;
}

.cta-band p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.74);
}

.cta-band .button.secondary {
  border-color: rgba(255, 255, 255, 0.5);
  background: transparent;
  color: #fff;
}

.site-footer {
  padding: 42px 0;
  background: #081f35;
  color: rgba(255, 255, 255, 0.7);
}

.footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a:hover {
  color: #fff;
}

.contact-card {
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.phone-big {
  display: inline-flex;
  margin: 12px 0 24px;
  color: var(--teal-dark);
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1;
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 72px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a,
  .nav-cta {
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
    background:
      linear-gradient(135deg, #f8fcfd 0%, #eef7f4 46%, #fdf7ec 100%);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .hero-showcase {
    min-height: auto;
    margin-right: 0;
    justify-content: center;
  }

  .hero-product-image {
    width: min(100%, 760px);
  }

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

  .proof-inner div:nth-child(odd) {
    border-left: 0;
  }

  .proof-inner div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .value-grid,
  .feature-links,
  .pricing-preview,
  .pricing-grid,
  .content-grid,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-card.wide {
    grid-column: span 1;
  }

  .two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .nav-shell,
  .container,
  .footer-inner {
    width: min(100% - 28px, 1180px);
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-copy,
  .lead {
    font-size: 16px;
  }

  .hero-showcase {
    display: none;
  }

  .hero-metrics,
  .value-grid,
  .feature-links,
  .pricing-preview,
  .pricing-grid,
  .content-grid,
  .steps,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .proof-inner {
    grid-template-columns: 1fr;
  }

  .proof-inner div,
  .proof-inner div:nth-child(n + 3) {
    border-top: 0;
    border-left: 0;
  }

  .proof-inner div + div {
    border-top: 1px solid var(--line);
  }

  .section {
    padding: 62px 0;
  }

  .cta-band .container,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .comparison {
    display: block;
    overflow-x: auto;
  }
}


.faq-section {
  border-top: 1px solid #e5e7eb;
}

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

.faq-item {
  min-height: 180px;
  padding: 24px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.faq-item h3 {
  margin: 0 0 12px;
  color: #0f172a;
  font-size: 19px;
}

.faq-item p {
  margin: 0;
  color: #475569;
  line-height: 1.8;
}

@media (max-width: 760px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}


.knowledge-category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.knowledge-category-card,
.knowledge-card,
.article-content,
.sidebar-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(13, 36, 56, 0.06);
}

.knowledge-category-card {
  min-height: 168px;
  padding: 24px;
}

.knowledge-category-card h2,
.knowledge-card h2,
.article-sidebar h2 {
  margin-bottom: 10px;
  font-size: 21px;
}

.knowledge-category-card p,
.knowledge-card p,
.article-sidebar p {
  margin-bottom: 0;
  color: var(--muted);
}

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

.knowledge-card {
  min-height: 250px;
  padding: 28px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.knowledge-card:hover {
  transform: translateY(-3px);
  border-color: rgba(25, 167, 168, 0.48);
  box-shadow: var(--shadow);
}

.knowledge-card span,
.article-labels span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 14px;
  padding: 0 10px;
  border-radius: 999px;
  background: #e8f7f7;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 800;
}

.knowledge-card em {
  display: inline-flex;
  margin-top: 18px;
  color: var(--teal-dark);
  font-style: normal;
  font-weight: 800;
}

.article-hero {
  padding: 72px 0 54px;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(13, 47, 79, 0.96), rgba(12, 104, 113, 0.88)),
    #0d2f4f;
}

.article-shell {
  max-width: 960px;
}

.article-hero h1 {
  max-width: 960px;
}

.article-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.article-labels span {
  margin-bottom: 0;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: start;
}

.article-content {
  padding: 42px;
}

.article-content section + section {
  margin-top: 36px;
}

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

.article-content p {
  color: #334155;
  font-size: 17px;
  line-height: 1.9;
}

.article-list {
  margin: 0;
  padding-left: 22px;
  color: #334155;
  font-size: 17px;
  line-height: 1.9;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 15px;
}

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

.article-table th {
  color: var(--navy);
  background: #edf6f7;
}

.article-sidebar {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 16px;
}

.sidebar-card {
  padding: 22px;
}

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

.sidebar-links a {
  color: #40566b;
}

.sidebar-links a:hover {
  color: var(--teal-dark);
}

.article-faq {
  display: grid;
  gap: 16px;
}

@media (max-width: 980px) {
  .knowledge-category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 680px) {
  .knowledge-category-grid,
  .knowledge-grid {
    grid-template-columns: 1fr;
  }

  .article-content {
    padding: 26px;
  }
}


.hero-demo-note {
  color: var(--muted);
  line-height: 1.8;
}

.hero-demo-note {
  margin: 14px 0 0;
  font-size: 15px;
}

.knowledge-category-card em {
  display: inline-flex;
  margin-top: 18px;
  color: var(--teal-dark);
  font-style: normal;
  font-weight: 800;
}



.contact-demo-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 30px;
  padding: 24px;
  border: 1px solid rgba(25, 167, 168, 0.28);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 50px rgba(13, 36, 56, 0.08);
}

.contact-demo-strip strong,
.contact-demo-strip span {
  display: block;
}

.contact-demo-strip strong {
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 20px;
}

.contact-demo-strip span {
  color: var(--muted);
  line-height: 1.8;
}

.contact-demo-action {
  flex: 0 0 auto;
}

@media (max-width: 760px) {
  .contact-demo-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}


.wechat-modal[hidden] {
  display: none;
}

.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 24px;
}

.wechat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 22, 36, 0.58);
  backdrop-filter: blur(4px);
}

.wechat-modal-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 28px;
  width: min(760px, 100%);
  padding: 30px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 24px 80px rgba(8, 22, 36, 0.24);
}

.wechat-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: #eef4f7;
  color: var(--navy);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.wechat-modal-copy h2 {
  margin: 8px 0 12px;
  font-size: 28px;
}

.wechat-modal-copy p {
  color: var(--muted);
  line-height: 1.8;
}

.wechat-phone {
  margin-top: 16px;
  font-weight: 800;
}

.wechat-phone a,
.phone-inline {
  color: var(--teal-dark);
  font-weight: 900;
}

.wechat-qr-card {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f8fbfc;
  text-align: center;
}

.wechat-qr-card img {
  display: block;
  width: 100%;
  max-width: 210px;
  aspect-ratio: 1;
  object-fit: contain;
}

.wechat-qr-card span {
  display: none;
  color: var(--muted);
  font-weight: 800;
}

.wechat-qr-card.qr-missing img {
  display: none;
}

.wechat-qr-card.qr-missing span {
  display: inline-flex;
}

.demo-link,
.source-link {
  color: var(--teal-dark);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.platform-story {
  display: grid;
  gap: 26px;
}

.platform-card {
  display: grid;
  gap: 28px;
  align-items: stretch;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 52px rgba(13, 36, 56, 0.08);
}

.platform-card-news {
  grid-template-columns: 1fr;
  gap: 24px;
}

.platform-card-document {
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.52fr);
  gap: 34px;
}

.platform-copy {
  align-self: center;
}

.platform-card-news .platform-copy {
  max-width: 1040px;
  margin: 0 auto;
}

.platform-card-document .platform-copy {
  align-self: start;
  padding: 10px 0;
}

.platform-copy h2 {
  font-size: clamp(30px, 3.5vw, 42px);
}

.platform-copy p {
  color: #334155;
  font-size: 17px;
  line-height: 1.9;
}

.platform-points {
  display: grid;
  gap: 10px;
  margin: 20px 0 24px;
  padding: 0;
  list-style: none;
}

.platform-points li {
  position: relative;
  padding-left: 18px;
  color: #40566b;
}

.platform-points li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

.platform-visual {
  display: grid;
  place-items: center;
  min-height: 320px;
  border: 1px dashed rgba(13, 47, 79, 0.24);
  border-radius: 8px;
  color: #5f7082;
  background:
    linear-gradient(135deg, rgba(25, 167, 168, 0.12), rgba(244, 166, 42, 0.1)),
    repeating-linear-gradient(45deg, rgba(13, 47, 79, 0.04) 0 10px, transparent 10px 20px);
  text-align: center;
  font-weight: 800;
  overflow: hidden;
}

.platform-visual.landscape {
  aspect-ratio: 16 / 9;
  min-height: auto;
  max-height: 520px;
}

.platform-visual.portrait {
  min-height: 520px;
  aspect-ratio: 0.714;
  align-self: start;
  max-width: 430px;
  justify-self: end;
}

.platform-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.platform-visual span {
  display: none;
  padding: 24px;
  line-height: 1.8;
}

.platform-visual.image-missing img {
  display: none;
}

.platform-visual.image-missing span {
  display: inline-flex;
}

.contact-demo-action {
  display: grid;
  justify-items: center;
  gap: 12px;
}

.contact-qr-card {
  width: 190px;
  min-height: 190px;
}

.contact-qr-card img {
  max-width: 170px;
}

@media (max-width: 760px) {
  .wechat-modal-panel {
    grid-template-columns: 1fr;
  }

  .platform-card,
  .platform-card-news,
  .platform-card-document {
    grid-template-columns: 1fr;
  }

  .platform-visual,
  .platform-visual.portrait {
    max-width: 100%;
    min-height: 260px;
    justify-self: stretch;
  }
}