:root {
  --blue-900: #05245c;
  --blue-800: #073a8d;
  --blue-700: #0b4fb3;
  --blue-500: #2775df;
  --blue-100: #eaf3ff;
  --gold-500: #f5b21b;
  --gold-100: #fff6d8;
  --mint-100: #e8f8f1;
  --ink: #142033;
  --muted: #5d697c;
  --line: #dfe7f4;
  --surface: #ffffff;
  --surface-soft: #f6f9fe;
  --surface-warm: #fffdf6;
  --shadow-1: 0 12px 32px rgba(5, 36, 92, 0.1);
  --shadow-2: 0 22px 60px rgba(5, 36, 92, 0.14);
  --radius-card: 8px;
  --radius-control: 8px;
  --container: 1180px;
  --font-sans: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(245, 178, 27, 0.82);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-150%);
  border-radius: var(--radius-control);
  background: var(--blue-900);
  color: #fff;
  padding: 8px 12px;
}

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

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

.section {
  padding: 96px 0;
}

.section-band {
  background:
    linear-gradient(180deg, rgba(234, 243, 255, 0.92), rgba(255, 255, 255, 0.96)),
    radial-gradient(circle at 15% 20%, rgba(245, 178, 27, 0.12), transparent 28%),
    var(--surface-soft);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(223, 231, 244, 0.76);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand img {
  width: auto;
  height: 64px;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: var(--muted);
  font-size: 15px;
}

.primary-nav a {
  position: relative;
  padding: 24px 0;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: center;
  background: var(--gold-500);
  content: "";
  transition: transform 180ms ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--blue-800);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-cta,
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  font-weight: 700;
  line-height: 1;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.header-cta {
  padding: 0 18px;
  background: var(--blue-700);
  color: #fff;
  box-shadow: 0 10px 24px rgba(11, 79, 179, 0.22);
}

.button {
  padding: 0 24px;
}

.button:hover,
.header-cta:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--blue-700);
  color: #fff;
  box-shadow: 0 14px 30px rgba(11, 79, 179, 0.24);
}

.button-secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--blue-800);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: #fff;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--blue-800);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 72px;
}

.hero-grid {
  display: grid;
  min-height: 620px;
  align-items: center;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-700);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero h1,
.section h2 {
  margin: 0;
  color: var(--blue-900);
  font-size: 56px;
  line-height: 1.12;
}

.section h2 {
  font-size: 40px;
}

.hero-lead,
.section-heading p,
.section-copy p {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 40px;
}

.hero-stats div {
  border: 1px solid rgba(223, 231, 244, 0.86);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.76);
  padding: 18px;
  box-shadow: var(--shadow-1);
}

.hero-stats strong {
  display: block;
  color: var(--blue-800);
  font-size: 26px;
  line-height: 1.1;
}

.hero-stats span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.hero-showcase {
  position: relative;
}

.slider {
  position: relative;
  min-height: 560px;
}

.slide {
  position: absolute;
  inset: 0;
  display: grid;
  align-items: center;
  grid-template-columns: 0.82fr 1fr;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(24px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.slide.is-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.slide-copy {
  border: 1px solid rgba(223, 231, 244, 0.88);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.9);
  padding: 28px;
  box-shadow: var(--shadow-2);
}

.slide-copy span {
  color: var(--gold-500);
  font-size: 14px;
  font-weight: 800;
}

.slide-copy h2 {
  margin: 10px 0 12px;
  color: var(--blue-900);
  font-size: 32px;
  line-height: 1.18;
}

.slide-copy p {
  margin: 0;
  color: var(--muted);
}

.slide img {
  width: min(100%, 420px);
  max-height: 520px;
  justify-self: center;
  object-fit: contain;
  filter: drop-shadow(0 24px 42px rgba(5, 36, 92, 0.18));
}

.slider-controls {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.slider-dot {
  width: 34px;
  height: 8px;
  border: 0;
  border-radius: 999px;
  background: rgba(11, 79, 179, 0.22);
  padding: 0;
}

.slider-dot.is-active {
  background: var(--blue-700);
}

.hero-paw {
  position: absolute;
  width: 116px;
  height: 116px;
  border: 2px solid rgba(39, 117, 223, 0.18);
  border-radius: 50%;
  opacity: 0.7;
}

.hero-paw::before,
.hero-paw::after {
  position: absolute;
  border-radius: 50%;
  background: rgba(245, 178, 27, 0.28);
  content: "";
}

.hero-paw::before {
  width: 26px;
  height: 26px;
  top: 24px;
  left: 24px;
  box-shadow: 38px -12px 0 rgba(245, 178, 27, 0.2), 66px 16px 0 rgba(245, 178, 27, 0.22);
}

.hero-paw::after {
  width: 48px;
  height: 38px;
  right: 28px;
  bottom: 22px;
  transform: rotate(-18deg);
}

.hero-paw-one {
  top: 122px;
  right: 5%;
}

.hero-paw-two {
  bottom: 52px;
  left: 7%;
  transform: rotate(-18deg) scale(0.74);
}

.value-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--blue-900);
  color: #fff;
}

.value-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.value-strip-grid div {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  font-weight: 700;
}

.value-strip-grid div:last-child {
  border-right: 0;
}

.mini-paw {
  position: relative;
  width: 14px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold-500);
}

.mini-paw::before {
  position: absolute;
  width: 6px;
  height: 6px;
  top: -6px;
  left: 0;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 8px -2px 0 var(--gold-500), 15px 1px 0 var(--gold-500);
  content: "";
}

.two-column {
  display: grid;
  align-items: center;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
}

.two-column.reverse {
  grid-template-columns: 1fr 0.95fr;
}

.brand-panel {
  border-radius: var(--radius-card);
  background:
    linear-gradient(135deg, rgba(5, 36, 92, 0.98), rgba(11, 79, 179, 0.94)),
    var(--blue-900);
  color: #fff;
  padding: 40px;
  box-shadow: var(--shadow-2);
}

.brand-panel h3 {
  margin: 0;
  font-size: 20px;
}

.brand-slogan {
  margin: 16px 0 28px;
  color: #fff;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
}

.brand-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.brand-values div {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-card);
  padding: 18px;
}

.brand-values strong {
  display: block;
  font-size: 18px;
}

.brand-values span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  line-height: 1.55;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.info-card,
.product-card,
.channel-card,
.result-card,
.quote-card,
.compare-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: #fff;
  box-shadow: var(--shadow-1);
}

.info-card {
  padding: 28px;
}

.info-card span,
.product-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--blue-100);
  color: var(--blue-800);
  padding: 5px 10px;
  font-size: 13px;
  font-weight: 800;
}

.info-card h3 {
  margin: 18px 0 12px;
  color: var(--blue-900);
  font-size: 22px;
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.section-heading {
  max-width: 760px;
  text-align: center;
}

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

.product-toolbar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.filter-button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: #fff;
  color: var(--muted);
  padding: 0 18px;
  font-weight: 700;
}

.filter-button.is-active {
  border-color: var(--blue-700);
  background: var(--blue-700);
  color: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 32px;
}

.product-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.product-card[hidden] {
  display: none;
}

.product-image {
  display: grid;
  height: 290px;
  place-items: center;
  background:
    linear-gradient(180deg, rgba(234, 243, 255, 0.9), rgba(255, 255, 255, 0.96)),
    var(--surface-soft);
  padding: 24px;
}

.product-image img {
  max-height: 242px;
  object-fit: contain;
  filter: drop-shadow(0 18px 28px rgba(5, 36, 92, 0.13));
}

.product-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.product-content h3 {
  margin: 14px 0 10px;
  color: var(--blue-900);
  font-size: 22px;
  line-height: 1.28;
}

.product-content p {
  margin: 0;
  color: var(--muted);
}

.product-content ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
}

.product-content li {
  border-radius: 999px;
  background: var(--gold-100);
  color: #7a5000;
  padding: 5px 10px;
  font-size: 13px;
  font-weight: 700;
}

.text-link {
  margin-top: auto;
  color: var(--blue-700);
  font-weight: 800;
}

.text-link::after {
  content: " >";
}

.compare-panel {
  display: grid;
  align-items: center;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 28px;
  margin-top: 36px;
  padding: 32px;
}

.compare-panel h3 {
  margin: 0;
  color: var(--blue-900);
  font-size: 28px;
}

.compare-panel p {
  margin: 12px 0 0;
  color: var(--muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.compare-grid div {
  border-radius: var(--radius-card);
  background: var(--surface-soft);
  padding: 18px;
}

.compare-grid strong {
  display: block;
  color: var(--blue-800);
}

.compare-grid span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.case-media {
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--surface-soft);
  box-shadow: var(--shadow-2);
}

.case-media img {
  width: 100%;
  max-height: 680px;
  object-fit: cover;
  object-position: top center;
}

.result-card,
.quote-card {
  margin-top: 24px;
  padding: 24px;
}

.result-card h3 {
  margin: 0 0 10px;
  color: var(--blue-900);
}

.result-card p,
.quote-card p {
  margin: 0;
  color: var(--muted);
}

.quote-card {
  border-left: 5px solid var(--gold-500);
  background: var(--surface-warm);
}

.quote-card span {
  display: block;
  margin-top: 12px;
  color: var(--blue-800);
  font-weight: 800;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.channel-card {
  display: flex;
  min-height: 156px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.channel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.channel-card img {
  max-width: 170px;
  max-height: 64px;
  object-fit: contain;
}

.channel-card span {
  color: var(--blue-900);
  font-weight: 800;
}

.channel-note img {
  max-width: 112px;
  max-height: 112px;
}

.contact-grid {
  display: grid;
  align-items: start;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.contact-list a,
.contact-list div {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: #fff;
  padding: 22px;
  box-shadow: var(--shadow-1);
}

.contact-list span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.contact-list strong {
  display: block;
  margin-top: 8px;
  color: var(--blue-900);
  font-size: 18px;
  line-height: 1.35;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--blue-900);
  color: #fff;
  padding: 44px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.footer-inner img {
  width: auto;
  height: 64px;
  border-radius: var(--radius-card);
  background: #fff;
  padding: 6px;
}

.footer-inner p {
  max-width: 520px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 22px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.82);
}

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

.reveal {
  opacity: 1;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .header-cta {
    display: none;
  }

  .hero-grid,
  .two-column,
  .two-column.reverse,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
  }

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

  .section h2 {
    font-size: 36px;
  }

  .product-grid,
  .channel-grid,
  .knowledge-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .compare-panel,
  .compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 820px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 72px 0;
  }

  .header-inner {
    min-height: 68px;
  }

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

  .primary-nav {
    position: absolute;
    top: 68px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: #fff;
    padding: 8px;
    box-shadow: var(--shadow-2);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav a {
    padding: 12px 14px;
  }

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

  .hero {
    padding-top: 56px;
  }

  .hero h1 {
    font-size: 38px;
  }

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

  .hero-stats,
  .value-strip-grid,
  .brand-values,
  .product-grid,
  .channel-grid,
  .knowledge-grid,
  .contact-list {
    grid-template-columns: 1fr;
  }

  .value-strip-grid div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .value-strip-grid div:last-child {
    border-bottom: 0;
  }

  .slider {
    min-height: 640px;
  }

  .slide {
    grid-template-columns: 1fr;
    align-content: start;
  }

  .slide-copy {
    padding: 22px;
  }

  .slide-copy h2 {
    font-size: 26px;
  }

  .slide img {
    max-height: 360px;
  }

  .compare-panel,
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .brand img {
    width: auto;
    height: 52px;
  }

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

  .section h2 {
    font-size: 30px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .product-image {
    height: 250px;
  }

  .brand-panel {
    padding: 28px;
  }

  .brand-slogan {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}