:root {
  color-scheme: light;
  --blue-600: #1f6fe5;
  --blue-500: #2a7ff6;
  --blue-100: #e8f1ff;
  --ink-900: #1f2a37;
  --ink-700: #4b5563;
  --ink-500: #6b7280;
  --gray-200: #e5e7eb;
  --bg: #f5f7fb;
  --card-bg: #ffffff;
  --shadow: 0 24px 60px rgba(17, 42, 93, 0.08);
  --shadow-soft: 0 18px 40px rgba(17, 42, 93, 0.06);
  --radius: 18px;
  --header-height: 76px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    sans-serif;
  color: var(--ink-900);
  background: var(--bg);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.page {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 15%, rgba(42, 127, 246, 0.16), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(31, 111, 229, 0.14), transparent 42%),
    radial-gradient(circle at 20% 70%, rgba(42, 127, 246, 0.1), transparent 50%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(232, 241, 255, 0.65));
}

main {
  padding-top: var(--header-height);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: linear-gradient(
    120deg,
    rgba(245, 247, 251, 0.92),
    rgba(232, 241, 255, 0.88)
  );
  border-bottom: 1px solid rgba(229, 231, 235, 0.6);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  filter: brightness(1.13) saturate(1.08);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.brand-sub {
  font-size: 0.95rem;
  color: var(--ink-500);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 1rem;
  color: var(--ink-700);
}

.site-nav a {
  position: relative;
  padding-bottom: 4px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0%;
  height: 2px;
  background: var(--blue-600);
  transition: width 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a:focus::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--gray-200);
  background: #fff;
  color: var(--ink-700);
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.95rem;
}

.hero {
  padding: 80px 0 100px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  gap: 48px;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 3.8vw, 3.4rem);
  margin: 10px 0 18px;
  letter-spacing: 0.03em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--ink-700);
  margin-bottom: 22px;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--blue-600);
  font-weight: 600;
}

.tag-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 28px;
  width: min(540px, 100%);
}

.tag {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--blue-100);
  color: var(--blue-600);
  font-size: 0.9rem;
  font-weight: 600;
  animation: rise 0.6s ease both;
  white-space: nowrap;
  text-align: center;
  width: 100%;
}

.tag:nth-child(2) {
  animation-delay: 0.06s;
}

.tag:nth-child(3) {
  animation-delay: 0.12s;
}

.tag:nth-child(4) {
  animation-delay: 0.18s;
}

.tag:nth-child(5) {
  animation-delay: 0.24s;
}

.tag:nth-child(6) {
  animation-delay: 0.3s;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 13px 24px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.btn.ghost {
  border-color: var(--gray-200);
  background: #fff;
  color: var(--ink-700);
}

.btn:hover {
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  gap: 18px;
}

.hero-image {
  width: min(480px, 90%);
  filter: drop-shadow(0 16px 28px rgba(31, 111, 229, 0.18));
}

.glass-card {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
  min-width: 260px;
  margin-top: -40px;
}

.metric-label {
  color: var(--ink-500);
  font-size: 0.85rem;
}

.metric-value {
  font-weight: 600;
  color: var(--ink-900);
}

.section {
  padding: 72px 0;
  scroll-margin-top: calc(var(--header-height) + 16px);
  animation: fadeIn 0.8s ease both;
}

.section-muted {
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.7),
    rgba(232, 241, 255, 0.5)
  );
  border-top: 1px solid rgba(229, 231, 235, 0.6);
  border-bottom: 1px solid rgba(229, 231, 235, 0.6);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  gap: 32px;
  align-items: start;
}

.section-title h2 {
  margin-top: 6px;
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
}

#services .section-title h2,
#advantages .section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}

#services .section-title h2::after,
#advantages .section-title h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72%;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(31, 111, 229, 0.35),
    rgba(42, 127, 246, 0.05)
  );
}

#services .section-title,
#advantages .section-title {
  position: relative;
}

#services .section-title::before,
#advantages .section-title::before {
  content: "";
  position: absolute;
  top: -18px;
  left: -12px;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(31, 111, 229, 0.25), rgba(42, 127, 246, 0));
  z-index: -1;
}

.section-illustration {
  margin-top: 16px;
  width: min(320px, 90%);
  filter: drop-shadow(0 12px 24px rgba(31, 111, 229, 0.12));
}

.section-body p {
  margin-bottom: 16px;
  color: var(--ink-700);
  font-size: 1.05rem;
}

.section-title.center {
  text-align: center;
  margin-bottom: 46px;
}

#results.section,
#delivery.section {
  padding-top: 56px;
}

#results .section-title.center,
#delivery .section-title.center {
  margin-bottom: 32px;
}

#clients.section {
  padding-top: 56px;
}

#clients .section-title.center {
  margin-bottom: 32px;
}

.card-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
}

.card {
  background: rgba(255, 255, 255, 0.78);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(229, 231, 235, 0.7);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  color: var(--ink-700);
  font-size: 1rem;
}

.adv-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.adv-list li {
  background: rgba(255, 255, 255, 0.78);
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid rgba(229, 231, 235, 0.6);
  box-shadow: var(--shadow-soft);
  color: var(--ink-700);
  font-size: 1.02rem;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.adv-list strong {
  color: var(--ink-900);
}

.results-grid .card {
  border-left: 4px solid var(--blue-500);
}

#services .card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, rgba(31, 111, 229, 0.6), rgba(42, 127, 246, 0));
}

#advantages .adv-list li::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 16px;
  width: 28px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(31, 111, 229, 0.6), rgba(42, 127, 246, 0.1));
}

#advantages .adv-list li::after {
  content: "";
  position: absolute;
  top: 18px;
  left: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 0 2px rgba(31, 111, 229, 0.35);
}

#advantages .adv-list li {
  padding-left: 48px;
}

.results-grid {
  grid-template-columns: repeat(2, minmax(240px, 1fr));
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 20px;
}

.client-card {
  margin: 0;
  padding: 18px 16px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 18px;
  border: 1px solid rgba(229, 231, 235, 0.7);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.client-logo {
  height: 192px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.client-logo img {
  max-height: 144px;
  max-width: 100%;
  width: auto;
  opacity: 0.95;
}

.client-card figcaption {
  font-size: 0.98rem;
  color: var(--ink-800);
  font-weight: 600;
}

.results-ribbon {
  margin: 0 auto 28px;
  width: min(920px, 94%);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.results-ribbon img {
  width: 100%;
  height: auto;
  display: block;
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 20px;
}

.timeline li {
  padding: 20px 22px;
  border-radius: 16px;
  border: 1px solid rgba(229, 231, 235, 0.7);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-soft);
  position: relative;
  backdrop-filter: blur(10px);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 24px;
  width: 14px;
  height: 14px;
  background: var(--blue-600);
  border-radius: 50%;
}

.timeline h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.timeline p {
  margin: 0;
  color: var(--ink-700);
  font-size: 1rem;
}

.delivery-graphic {
  position: relative;
  margin-top: 10px;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(140deg, #f5f9ff, #e9f1ff);
  box-shadow: var(--shadow-soft);
  padding: 56px 48px 48px;
  min-height: 360px;
}

.delivery-growth {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.delivery-growth::before {
  content: "";
  position: absolute;
  inset: 28px 32px 32px;
  border-radius: 16px;
  background-image:
    linear-gradient(to right, rgba(207, 224, 255, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(207, 224, 255, 0.55) 1px, transparent 1px);
  background-size: 80px 60px;
  opacity: 0.6;
}

.delivery-growth .bar {
  position: absolute;
  bottom: 32px;
  width: 68px;
  border-radius: 12px;
  background: rgba(31, 111, 229, 0.18);
  box-shadow: inset 0 0 0 1px rgba(31, 111, 229, 0.12);
}

.delivery-growth .b1 {
  left: 10%;
  height: 110px;
}

.delivery-growth .b2 {
  left: 34%;
  height: 155px;
}

.delivery-growth .b3 {
  left: 58%;
  height: 205px;
}

.delivery-growth .b4 {
  left: 82%;
  height: 255px;
}

.delivery-growth .trend-line {
  position: absolute;
  left: 10%;
  bottom: 84px;
  width: 76%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(31, 111, 229, 0.6), rgba(42, 127, 246, 0.2));
  transform: rotate(-11deg);
  transform-origin: left center;
  box-shadow: 0 8px 20px rgba(31, 111, 229, 0.15);
}

.delivery-growth .dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #1f6fe5;
  box-shadow: 0 0 0 6px rgba(31, 111, 229, 0.12);
}

.delivery-growth .d1 {
  left: calc(10% + 24px);
  bottom: 150px;
}

.delivery-growth .d2 {
  left: calc(34% + 24px);
  bottom: 198px;
}

.delivery-growth .d3 {
  left: calc(58% + 24px);
  bottom: 246px;
}

.delivery-growth .d4 {
  left: calc(82% + 24px);
  bottom: 292px;
}

.delivery-nodes {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  align-items: end;
  z-index: 1;
}

.delivery-node {
  position: relative;
  width: 100%;
  background: rgba(255, 255, 255, 0.86);
  border-radius: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(229, 231, 235, 0.7);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(10px);
  transform: translateY(var(--rise, 0px));
}

.delivery-node:nth-child(1) {
  --rise: 36px;
}

.delivery-node:nth-child(2) {
  --rise: 18px;
}

.delivery-node:nth-child(3) {
  --rise: -6px;
}

.delivery-node:nth-child(4) {
  --rise: -28px;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(31, 111, 229, 0.2), rgba(42, 127, 246, 0.05));
  color: var(--blue-600);
  font-weight: 700;
  margin-bottom: 14px;
}

.delivery-node h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.delivery-node p {
  margin: 0;
  color: var(--ink-700);
  font-size: 0.98rem;
}

.contact-card {
  display: grid;
  gap: 20px;
  grid-template-columns: 1.4fr 1.6fr 1fr 1fr;
  background: rgba(255, 255, 255, 0.82);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(229, 231, 235, 0.6);
  backdrop-filter: blur(12px);
}

.contact-card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.contact-card p {
  margin: 0;
  color: var(--ink-700);
  font-size: 1rem;
}

.contact-icp {
  grid-column: span 2;
  background: var(--blue-100);
  border-radius: 14px;
  padding: 16px 18px;
}

.site-footer {
  padding: 28px 0 40px;
  border-top: 1px solid rgba(229, 231, 235, 0.7);
  background: linear-gradient(
    120deg,
    rgba(245, 247, 251, 0.95),
    rgba(232, 241, 255, 0.85)
  );
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink-500);
  font-size: 0.95rem;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.footer-links a {
  color: var(--ink-500);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: var(--blue-600);
}

.mps-link img {
  width: 18px;
  height: 18px;
  display: block;
  flex: 0 0 auto;
}

.about-body {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 24px;
  align-items: center;
  justify-items: center;
}

.about-title {
  margin: 0 0 18px;
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
  line-height: 1.2;
}

.about-text {
  max-width: 560px;
  width: 100%;
}

.about-visual {
  max-width: 520px;
  width: 100%;
}

.about-visual {
  background: #fff;
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(229, 231, 235, 0.7);
}

.about-visual img {
  width: 100%;
  height: auto;
}

@keyframes rise {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .site-nav {
    position: absolute;
    top: 72px;
    right: 4%;
    flex-direction: column;
    align-items: flex-start;
    background: #fff;
    padding: 18px 20px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(229, 231, 235, 0.7);
    display: none;
    min-width: 220px;
  }

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

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

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

  .hero {
    padding-top: 60px;
  }

  .tag-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .hero-visual {
    order: -1;
  }

  .hero-image {
    width: 100%;
  }

  .glass-card {
    margin-top: 0;
  }

  .contact-icp {
    grid-column: span 1;
  }

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

  .delivery-node:nth-child(1) {
    --rise: 14px;
  }

  .delivery-node:nth-child(2) {
    --rise: 0px;
  }

  .delivery-node:nth-child(3) {
    --rise: -6px;
  }

  .delivery-node:nth-child(4) {
    --rise: -18px;
  }

  .contact-card {
    grid-template-columns: repeat(2, minmax(200px, 1fr));
  }

  .client-grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
  }
}

@media (max-width: 600px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .timeline li::before {
    left: 16px;
  }

  .delivery-graphic {
    min-height: auto;
    padding: 16px;
    border-radius: 18px;
  }

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

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

  .contact-card {
    grid-template-columns: 1fr;
  }

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

  .delivery-growth {
    display: none;
  }

  .delivery-nodes {
    position: static;
    display: grid;
    gap: 16px;
    grid-template-columns: 1fr;
  }

  .delivery-node {
    position: static;
    width: 100%;
    transform: none;
  }

  #advantages .section-illustration {
    margin-left: auto;
    margin-right: auto;
  }

  #about .about-visual {
    display: none;
  }

  .about-body {
    grid-template-columns: 1fr;
    justify-items: stretch;
  }

  .about-text {
    max-width: none;
    width: 100%;
  }
}