:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #dbeafe;
  --accent: #06b6d4;
  --success: #22c55e;
  --dark: #0f172a;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --light: #f8fafc;
  --line: #e2e8f0;
  --white: #ffffff;
  --shadow: 0 20px 44px rgba(37, 99, 235, 0.12);
  --radius: 16px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  min-width: 320px;
  color: var(--dark);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open,
body.modal-open {
  overflow: hidden;
}

img,
svg {
  display: block;
}

button,
input,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
}

.container {
  width: min(100% - 48px, 1140px);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  padding: 10px 16px;
  color: var(--white);
  background: var(--dark);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
  backdrop-filter: blur(12px);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 28px;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 60px;
  text-decoration: none;
}

.logo-image {
  width: 168px;
  height: 56px;
  object-fit: cover;
  object-position: center;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  position: relative;
  color: var(--gray);
  font-size: 16px;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

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

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 27px;
  color: var(--white);
  background: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.float-phone:focus-visible,
.float-wechat:focus-visible,
.modal button:focus-visible,
.carousel-button:focus-visible,
.carousel-dot:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.3);
  outline-offset: 3px;
}

.btn-outline {
  color: var(--dark);
  background: transparent;
  border-color: var(--dark);
}

.btn-outline:hover {
  color: var(--white);
  background: var(--dark);
  border-color: var(--dark);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--dark);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(4) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  padding: 160px 0 100px;
  background:
    radial-gradient(circle at 12% 15%, rgba(255, 255, 255, 0.95), transparent 30%),
    linear-gradient(135deg, #eff6ff 0%, #e0f2fe 55%, #ecfeff 100%);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 24px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.hero h1 {
  max-width: 900px;
  margin: 0 auto 20px;
  font-size: 54px;
  font-weight: 800;
  line-height: 1.25;
}

.hero h1 em {
  display: block;
  color: var(--primary);
  font-style: normal;
}

.hero p {
  max-width: 680px;
  margin: 0 auto 36px;
  color: var(--gray);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.section {
  padding: 90px 0;
}

.section-title {
  margin-bottom: 60px;
  text-align: center;
}

.section-title .tag {
  display: block;
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
}

.section-title h2 {
  font-size: 34px;
  font-weight: 800;
}

.section-title p {
  margin-top: 12px;
  color: var(--gray);
}

.platforms {
  background: var(--white);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.platform-card,
.card,
.step,
.case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.platform-card:hover,
.card:hover,
.step:hover,
.case-card:hover {
  border-color: rgba(37, 99, 235, 0.22);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.platform-card {
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  background: var(--white);
}

.platform-card--geo {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.62fr);
  align-items: center;
  gap: 46px;
  background: linear-gradient(105deg, #f2f7ff 0%, #edf4ff 62%, #f8fbff 100%);
  border-color: #d8e6fb;
}

.platform-geo-copy {
  min-width: 0;
}

.platform-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.platform-new {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 22px;
  padding: 2px 9px;
  color: var(--primary-dark);
  background: #dbeafe;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.platform-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.platform-icon {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  color: var(--white);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
}

.platform-icon.jj {
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
}

.platform-icon.gdt {
  background: linear-gradient(135deg, #16a34a, #22c55e);
}

.platform-icon.ks {
  background: linear-gradient(135deg, #f97316, #fb923c);
}

.platform-icon.bd {
  background: linear-gradient(135deg, #2932e1, #4e6ef2);
}

.platform-icon.geo {
  background: linear-gradient(135deg, #2563eb, #06b6d4);
}

.platform-header h3 {
  margin-bottom: 2px;
  font-size: 18px;
}

.platform-title-row h3 {
  margin-bottom: 0;
}

.platform-en {
  color: var(--gray-light);
  font-size: 11px;
  letter-spacing: 1px;
}

.platform-desc {
  flex: 1;
  margin-bottom: 20px;
  color: var(--gray);
  font-size: 14.5px;
  line-height: 1.75;
}

.platform-stats,
.case-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  border-top: 1px dashed var(--line);
}

.platform-stats {
  padding-top: 18px;
}

.platform-stats div,
.case-metrics div {
  min-width: 0;
}

.p-num {
  color: var(--dark);
  font-size: 22px;
  font-weight: 800;
}

.p-label {
  margin-top: 2px;
  color: var(--gray);
  font-size: 12px;
}

.platform-card--geo .platform-header {
  margin-bottom: 14px;
}

.platform-card--geo .platform-desc {
  margin-bottom: 0;
}

.platform-stats--geo {
  align-self: center;
  padding-top: 20px;
  border-top-color: #cbd9ee;
}

.platform-stats--geo .p-num {
  font-size: 26px;
}

.services {
  background: var(--light);
}

.advantages {
  background: var(--light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.card {
  padding: 34px 28px;
  background: var(--white);
}

.advantage-card {
  background: var(--white);
}

.card .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 20px;
  background: #eff6ff;
  border-radius: 14px;
  font-size: 26px;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.card p {
  color: var(--gray);
  font-size: 15px;
}

.process-section {
  background: var(--white);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
  list-style: none;
}

.step {
  padding: 34px 26px;
  background: var(--white);
  text-align: center;
}

.step .num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 auto 18px;
  color: var(--white);
  background: var(--primary);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 800;
}

.step h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.step p {
  color: var(--gray);
  font-size: 14px;
}

.cases {
  background: var(--light);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.case-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
}

.case-cover {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 150px;
  color: var(--white);
  font-size: 46px;
}

.case-cover.c1 {
  background: linear-gradient(135deg, #2563eb, #06b6d4);
}

.case-cover.c2 {
  background: linear-gradient(135deg, #7c3aed, #ec4899);
}

.case-cover.c3 {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.case-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 26px 24px 28px;
}

.case-tag {
  align-self: flex-start;
  padding: 4px 12px;
  margin-bottom: 12px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.case-body h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.case-body p {
  flex: 1;
  margin-bottom: 16px;
  color: var(--gray);
  font-size: 14px;
}

.case-metrics {
  padding-top: 16px;
}

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

.m-num {
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
}

.m-label {
  color: var(--gray);
  font-size: 12px;
}

.stats {
  color: var(--white);
  background: var(--dark);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-num {
  color: #38bdf8;
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
}

.stat-label {
  margin-top: 6px;
  color: #a1a1aa;
}

.data-note {
  max-width: 900px;
  margin: 24px auto 0;
  color: var(--gray-light);
  font-size: 12px;
  line-height: 1.7;
  text-align: center;
}

.about {
  background: var(--light);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 60px;
}

.about-text h2 {
  margin-bottom: 20px;
  font-size: 32px;
  font-weight: 800;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--gray);
}

.about-text .btn {
  margin-top: 12px;
}

.faq-section {
  background: var(--white);
}

.faq-list {
  max-width: 860px;
  margin-inline: auto;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-item summary {
  position: relative;
  padding: 24px 56px 24px 4px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--primary);
  content: "+";
  background: #eff6ff;
  border-radius: 50%;
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  transform: translateY(-50%);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
  max-width: 740px;
  padding: 0 56px 24px 4px;
  color: var(--gray);
}

.about-visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #0d2657;
  border-radius: 20px;
}

.carousel,
.carousel-track,
.carousel-slide,
.carousel-slide img {
  width: 100%;
  height: 100%;
}

.carousel {
  position: relative;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.65s cubic-bezier(0.45, 0, 0.2, 1);
}

.carousel-slide {
  flex: 0 0 100%;
}

.carousel-slide img {
  object-fit: cover;
}

.carousel-button {
  position: absolute;
  top: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--white);
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  opacity: 0;
  cursor: pointer;
  transform: translateY(-50%);
  transition: opacity 0.2s ease, background 0.2s ease;
}

.carousel:hover .carousel-button,
.carousel:focus-within .carousel-button {
  opacity: 1;
}

.carousel-button:hover {
  background: rgba(15, 23, 42, 0.86);
}

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

.carousel-button.prev {
  left: 14px;
}

.carousel-button.next {
  right: 14px;
}

.carousel-dots {
  position: absolute;
  right: 0;
  bottom: 14px;
  left: 0;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  background: rgba(255, 255, 255, 0.55);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  transition: width 0.2s ease, background 0.2s ease;
}

.carousel-dot.is-active {
  width: 24px;
  background: var(--white);
  border-radius: 999px;
}

.cta {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  text-align: center;
}

.cta h2 {
  margin-bottom: 16px;
  font-size: 34px;
  font-weight: 800;
}

.cta p {
  margin-bottom: 32px;
  font-size: 17px;
  opacity: 0.94;
}

.cta .btn {
  color: var(--primary);
  background: var(--white);
  border-color: var(--white);
}

.cta .btn:hover {
  background: var(--primary-soft);
  border-color: var(--primary-soft);
}

.contact-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 36px;
  font-size: 16px;
}

.contact-info div {
  opacity: 0.95;
}

.site-footer {
  padding: 40px 0;
  color: #a1a1aa;
  background: #0c0c0e;
  font-size: 14px;
  text-align: center;
}

.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.68);
  backdrop-filter: blur(5px);
}

.modal-mask.is-active {
  display: flex;
}

.modal {
  position: relative;
  width: min(100%, 400px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding: 40px 36px 34px;
  background: var(--white);
  border-radius: 18px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.28);
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--gray);
  background: transparent;
  border: 0;
  border-radius: 50%;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--dark);
  background: var(--light);
}

.wx-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  color: var(--white);
  background: var(--success);
  border-radius: 50%;
}

.wx-icon svg {
  width: 42px;
  height: 42px;
  fill: currentColor;
}

.modal h2 {
  margin-bottom: 8px;
  font-size: 22px;
}

.modal .tip {
  margin-bottom: 20px;
  color: var(--gray);
  font-size: 14px;
}

.qr-wrap {
  display: inline-block;
  padding: 10px;
  margin-bottom: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.qr-wrap img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  background: var(--white);
  border-radius: 6px;
}

.qr-tip {
  margin-top: 8px;
  color: var(--gray);
  font-size: 12px;
}

.close-btn {
  display: block;
  margin: 4px auto 0;
  color: var(--gray);
  background: transparent;
  border: 0;
  font-size: 14px;
  cursor: pointer;
}

.close-btn:hover {
  color: var(--dark);
}

.float-wechat,
.float-phone {
  position: fixed;
  right: 22px;
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  color: var(--white);
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.float-wechat {
  bottom: 22px;
  background: var(--success);
  border: 0;
  box-shadow: 0 10px 26px rgba(34, 197, 94, 0.45);
}

.float-phone {
  bottom: 98px;
  background: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.38);
  text-decoration: none;
}

.float-wechat::after {
  position: absolute;
  inset: -6px;
  content: "";
  border: 2px solid rgba(34, 197, 94, 0.6);
  border-radius: 50%;
  animation: pulse 2s ease-out infinite;
}

.float-wechat svg {
  width: 34px;
  height: 34px;
  fill: currentColor;
}

.float-phone svg {
  width: 29px;
  height: 29px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.float-wechat:hover,
.float-phone:hover {
  transform: scale(1.08);
}

.float-tip {
  position: absolute;
  top: 50%;
  right: 72px;
  padding: 6px 12px;
  color: var(--white);
  background: var(--dark);
  border-radius: 6px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%);
  transition: opacity 0.2s ease;
}

.float-wechat:hover .float-tip,
.float-phone:hover .float-tip,
.float-phone:focus-visible .float-tip,
.float-wechat:focus-visible .float-tip {
  opacity: 1;
}

@keyframes pulse {
  0% {
    opacity: 1;
    transform: scale(0.9);
  }
  100% {
    opacity: 0;
    transform: scale(1.5);
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1050px) {
  .nav {
    gap: 20px;
  }

  .nav-links {
    gap: 20px;
  }

  .nav-links a {
    font-size: 15px;
  }

  .nav-cta {
    padding-inline: 20px;
    font-size: 15px;
  }

  .hero h1 {
    font-size: 46px;
  }

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

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

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

  .about-grid {
    gap: 40px;
  }

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

  .platform-stats--geo {
    width: 100%;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 72px;
  }

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

  .nav-toggle {
    display: block;
    order: 3;
  }

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

  .nav-links {
    position: absolute;
    top: calc(100% + 1px);
    right: -16px;
    left: -16px;
    display: grid;
    gap: 0;
    padding: 12px 24px 20px;
    background: rgba(255, 255, 255, 0.99);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.08);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-links a {
    display: block;
    padding: 12px 4px;
    font-size: 16px;
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    padding: 130px 0 80px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    margin-bottom: 44px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 20px;
  }

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

  .about-text {
    max-width: 680px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 560px);
  }

  .logo {
    min-height: 48px;
  }

  .logo-image {
    width: 138px;
    height: 46px;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    padding: 116px 0 64px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-actions {
    gap: 12px;
  }

  .hero-actions .btn {
    flex: 1 1 150px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title h2,
  .cta h2 {
    font-size: 28px;
  }

  .platforms-grid,
  .services-grid,
  .advantages-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .platform-card,
  .card,
  .step {
    padding: 26px 22px;
  }

  .platform-card--geo .platform-header h3 {
    font-size: 20px;
  }

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

  .stat-num {
    font-size: 38px;
  }

  .about-grid {
    gap: 32px;
  }

  .about-text h2 {
    font-size: 28px;
  }

  .carousel-button {
    opacity: 1;
  }

  .contact-info {
    flex-direction: column;
    gap: 8px;
  }

  .float-wechat,
  .float-phone {
    right: 16px;
    width: 56px;
    height: 56px;
  }

  .float-wechat {
    bottom: 16px;
  }

  .float-phone {
    bottom: 84px;
  }

  .float-phone svg {
    width: 27px;
    height: 27px;
  }

  .float-tip {
    display: none;
  }

  .modal {
    padding: 38px 22px 28px;
  }

  .qr-wrap img {
    width: min(200px, 64vw);
    height: min(200px, 64vw);
  }
}