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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: #FFFFFF;
  color: #000000;
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: #000000;
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: #5A984D;
}

.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #FFFFFF;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
  padding: 18px 0;
}

.nav-bar.scrolled {
  border-bottom-color: #D4D3A7;
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-left .nav-link {
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-sep {
  color: #D4D3A7;
  font-size: 0.85rem;
}

.nav-center {
  display: flex;
  gap: 36px;
}

.nav-center .nav-link {
  font-size: 0.95rem;
  position: relative;
}

.nav-center .nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #5A984D;
  transition: width 0.3s;
}

.nav-center .nav-link:hover::after,
.nav-center .nav-link.active::after {
  width: 100%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-btn {
  background: none;
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
  color: #000000;
  padding: 4px 6px;
  transition: color 0.3s;
  font-family: inherit;
}

.lang-btn:hover,
.lang-btn.lang-active {
  color: #5A984D;
}

.lang-sep {
  color: #D4D3A7;
  font-size: 0.85rem;
}

.section {
  padding: 120px 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.section-label {
  font-size: 1.6rem;
  font-weight: 800;
  color: #5A984D;
  letter-spacing: 2px;
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 3px solid #5A984D;
  display: inline-block;
}

.hero {
  min-height: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15px;
  padding-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
  width: 100%;
  max-width: 1000px;
}

.hero-cat {
  width: 520px;
  height: 520px;
  position: relative;
  animation: cat-breathe 4s ease-in-out infinite;
  margin-top: -16px;
  margin-bottom: -145px;
  z-index: 0;
}

.cat-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.cat-img-alt {
  opacity: 0;
}

.cat-img-alt.active {
  opacity: 1;
}

.eye {
  position: absolute;
  width: 80px;
  height: 60px;
  overflow: visible;
}

.eye-left {
  top: 42%;
  left: 41%;
}

.eye-right {
  top: 42%;
  right: 41%;
}

.eye-highlight {
  background: #FFFFFF;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
}

.eye-highlight.hidden {
  opacity: 0;
}

.eye-highlight-lg {
  width: 21px;
  height: 21px;
}

.eye-highlight-sm {
  width: 7px;
  height: 7px;
}

@keyframes cat-breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes title-float {
  0%, 100% { transform: translateX(-10px) translateY(0); }
  50% { transform: translateX(-10px) translateY(-6px); }
}

.hero-title-wrap {
  margin-bottom: 0;
  position: relative;
  z-index: 1;
  transform: translateX(-10px);
  animation: title-float 4s ease-in-out infinite;
}

.hero-title-svg {
  width: 100%;
  max-width: 600px;
  height: auto;
  display: block;
}

.about {
  background: linear-gradient(to bottom, #FFFFFF, #F9F9F5);
  padding-top: 160px;
  padding-bottom: 160px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 48px;
}

.about-col {
  position: relative;
  background: #FFFFFF;
  border: 2px solid #D4D3A7;
  padding: 48px 36px 40px;
  min-height: 360px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.about-col:hover {
  border-color: #5A984D;
}

.about-content {
  position: relative;
  z-index: 1;
}

.about-veil {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #D4D3A7;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 48px 36px 40px;
  clip-path: circle(150% at 50% 50%);
  transition: clip-path 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-veil .about-num {
  color: #5A984D;
}

.about-veil .about-heading {
  color: #000000;
}

.veil-hint {
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(90, 152, 77, 0.6);
  letter-spacing: 1px;
  animation: hint-pulse 2s ease-in-out infinite;
}

@keyframes hint-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.about-col:hover .about-veil {
  clip-path: circle(0px at var(--mouse-x, 50%) var(--mouse-y, 50%));
  transition: clip-path 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: #5A984D;
  display: block;
  margin-bottom: 16px;
}

.about-heading {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 28px;
  letter-spacing: 2px;
}

.about-detail {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

#about-col-1 .about-detail {
  flex-direction: column;
  align-items: flex-start;
}

.block-tag {
  background: #FFFFFF;
  border: 2px solid #000000;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 3px 3px 0 0 rgba(0,0,0,0.08), 5px 5px 0 0 rgba(90,152,77,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.block-tag:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 0 rgba(0,0,0,0.12), 6px 6px 0 0 rgba(90,152,77,0.2);
}

.block-wide {
  flex-basis: calc(60% - 12px);
}

.about-bridge {
  text-align: center;
  margin-top: 160px;
  margin-bottom: 20px;
  font-size: 1.8rem;
  color: rgba(90, 152, 77, 0.6);
  font-style: normal;
  font-weight: 700;
}

.bridge-word {
  font-size: 3rem;
  color: #5A984D;
  font-weight: 700;
}

.projects {
  padding-top: 160px;
  padding-bottom: 100px;
}

.video-carousel {
  position: relative;
  margin-top: 48px;
  overflow: hidden;
  padding-bottom: 8px;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-card {
  flex: 0 0 100%;
  display: flex;
  gap: 48px;
  align-items: flex-start;
  padding: 0 80px;
  cursor: pointer;
}

.video-cover {
  flex: 0 0 360px;
  height: 240px;
  background: #D4D3A7;
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid rgba(90, 152, 77, 0.5);
}

.video-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-info {
  flex: 1;
  padding-top: 8px;
}

.video-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.video-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tag {
  background: transparent;
  border: 1.5px solid #5A984D;
  color: #5A984D;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.video-desc {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 540px;
}

.video-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #5A984D;
  border-bottom: 2px solid #5A984D;
  padding-bottom: 2px;
}

.video-link:hover {
  color: #3d6e34;
  border-color: #3d6e34;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  background: none;
  border: none;
  color: rgba(150, 150, 150, 0.4);
  font-size: 2.5rem;
  font-family: monospace;
  font-weight: 300;
  cursor: pointer;
  transition: color 0.3s, transform 0.3s;
  padding: 12px;
}

.carousel-arrow:hover {
  color: rgba(90, 152, 77, 0.6);
  transform: translateY(-50%) scale(1.2);
}

.carousel-prev {
  left: 18px;
}

.carousel-next {
  right: 18px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #D4D3A7;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}

.dot.active {
  background: #5A984D;
  transform: scale(1.3);
}

.cat-eye {
  padding-top: 60px;
  padding-bottom: 115px;
  position: relative;
  overflow: hidden;
}

.cat-eye-divider {
  display: block;
  width: 85%;
  height: auto;
  margin: -1px auto 0;
}

.cat-eye-orbit {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0;
  margin-top: 24px;
  flex-wrap: nowrap;
  position: relative;
  z-index: 1;
}

.paw-cursor {
  position: absolute;
  pointer-events: none;
  z-index: 8;
  width: 576px;
  height: auto;
  opacity: 0;
}

.orbit-item {
  position: relative;
  cursor: pointer;
  animation: float 5s ease-in-out infinite;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.orbit-left-1  { animation-delay: 0s; margin-bottom: 44px; margin-right: -19px; z-index: 1; --float-delay: 0s; }
.orbit-left-2  { animation-delay: 0.8s; margin-bottom: 0; margin-right: 52px; z-index: 2; --float-delay: 0.8s; }
.orbit-center  { animation-delay: 1.6s; margin-bottom: 35px; z-index: 3; margin-left: -29px; margin-right: -29px; --float-delay: 1.6s; }
.orbit-right-1 { animation-delay: 2.4s; margin-bottom: 4px; margin-left: -3px; z-index: 2; --float-delay: 2.4s; }
.orbit-right-2 { animation-delay: 3.2s; margin-bottom: 47px; margin-left: -49px; z-index: 1; --float-delay: 3.2s; }

.orbit-svg {
  width: 274px;
  height: 274px;
  object-fit: contain;
  transition: transform 0.3s;
}

.orbit-left-2 .orbit-svg {
  width: 273px;
  height: 273px;
}

.orbit-svg:hover {
  transform: scale(1.1);
}

.orbit-trigger {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 130px;
  height: 130px;
  border-radius: 50%;
  z-index: 6;
  pointer-events: auto;
}

.orbit-trigger:hover ~ .orbit-svg {
  transform: scale(1.1);
}

.orbit-trigger:hover ~ .tooltip-bubble {
  opacity: 1;
  visibility: visible;
}

.orbit-name {
  margin-top: -34px;
  font-size: 2.0rem;
  font-weight: 700;
  color: #5A984D;
  letter-spacing: 1px;
  position: relative;
  z-index: 5;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes anti-float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

.tooltip-bubble {
  position: absolute;
  bottom: calc(100% - 62px);
  left: 50%;
  background: #FFFFFF;
  border: 2px solid #000000;
  padding: 22px 28px;
  width: 300px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  box-shadow: 4px 4px 0 0 rgba(90,152,77,0.15);
  z-index: 10;
  pointer-events: none;
  animation: anti-float 5s ease-in-out infinite;
  animation-delay: var(--float-delay);
}

.tooltip-bubble::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid #000000;
}

.bubble-content {
  font-size: 1.0rem;
  color: #333;
  line-height: 1.7;
}

.ai-blog {
  padding-top: 160px;
  padding-bottom: 160px;
  background: #FFFFFF;
}

.blog-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 48px;
}

.blog-card {
  background: #FFFFFF;
  border: 2px solid #D4D3A7;
  padding: 48px 40px 44px;
  display: block;
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
}

.blog-card:hover {
  border-color: #5A984D;
  transform: translateY(-4px);
}

.blog-card-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: #5A984D;
  margin-bottom: 16px;
}

.blog-card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #000000;
}

.blog-card-desc {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 24px;
}

.blog-card-arrow {
  font-size: 0.85rem;
  font-weight: 600;
  color: #5A984D;
  display: inline-block;
}

.blog-card:hover .blog-card-arrow {
  color: #3d6e34;
}

.footer {
  text-align: center;
  padding: 60px;
  border-top: 1px solid #D4D3A7;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: #999;
}

.footer-links a {
  color: #555;
}

.footer-links a:hover {
  color: #5A984D;
}

.footer-copy {
  font-size: 0.8rem;
  color: #bbb;
}

.article-page {
  padding-top: 100px;
  padding-bottom: 100px;
}

.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 30px;
}

.article-back {
  display: inline-block;
  font-size: 0.9rem;
  color: #5A984D;
  margin-bottom: 40px;
}

.article-back:hover {
  color: #3d6e34;
}

.article-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
}

.article-meta {
  font-size: 0.9rem;
  color: #999;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid #D4D3A7;
}

.article-body {
  font-size: 1.05rem;
  line-height: 2;
  color: #333;
}

.article-body p {
  margin-bottom: 28px;
}

.article-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 20px;
  color: #000000;
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 16px;
  color: #000000;
}

.article-body blockquote {
  border-left: 3px solid #5A984D;
  padding-left: 24px;
  margin: 32px 0;
  color: #555;
  font-style: italic;
}

.article-body ol,
.article-body ul {
  margin: 20px 0;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 12px;
}

.article-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 36px auto;
  border: 1px solid #E0DFD2;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.article-body .img-label {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  color: #999;
  margin-top: -28px;
  margin-bottom: 36px;
}

.contact-page {
  padding-top: 100px;
  padding-bottom: 100px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 30px;
  text-align: center;
}

.contact-container .section-label {
  margin-bottom: 40px;
}

.contact-card {
  background: #FFFFFF;
  border: 2px solid #D4D3A7;
  padding: 60px 50px;
}

.contact-item {
  padding: 24px 0;
  border-bottom: 1px solid #D4D3A7;
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-label {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: #000000;
}

.download-btn {
  display: inline-block;
  background: #5A984D;
  color: #FFFFFF;
  border: none;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
  text-decoration: none;
}

.download-btn:hover {
  background: #3d6e34;
  color: #FFFFFF;
}

.delta-page {
  padding-top: 100px;
  padding-bottom: 100px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delta-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 30px;
  text-align: center;
}

.delta-container .section-label {
  margin-bottom: 40px;
}

.delta-card {
  background: #FFFFFF;
  border: 2px solid #D4D3A7;
  padding: 60px 50px;
}

.delta-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.delta-desc {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 36px;
}

.delta-downloads {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.delta-downloads .download-btn {
  min-width: 260px;
  text-align: center;
}

@media (max-width: 1024px) {
  .hero-cat {
    width: 350px;
    height: 350px;
    margin-bottom: 37px;
  }

  .hero-title-svg {
    max-width: 85%;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .video-card {
    flex-direction: column;
    padding: 0 20px;
  }

  .video-cover {
    flex: 0 0 200px;
    width: 100%;
  }

  .blog-cards {
    grid-template-columns: 1fr;
  }

  .cat-eye-orbit {
    gap: 0;
  }

  .orbit-svg {
    width: 176px;
    height: 176px;
  }

  .orbit-left-2 .orbit-svg {
    width: 175px;
    height: 175px;
  }

  .orbit-left-1 { margin-right: -24px; }
  .orbit-left-2 { margin-right: 2px; }
  .orbit-right-1, .orbit-right-2 { margin-left: -24px; }
  .orbit-center { margin-left: -21px; margin-right: -21px; }

  .nav-inner {
    padding: 0 24px;
  }

  .nav-center {
    gap: 20px;
  }

  .nav-center .nav-link {
    font-size: 0.85rem;
  }

  .section {
    padding: 80px 30px;
  }
}

@media (max-width: 768px) {
  .hero-cat {
    width: 255px;
    height: 255px;
    margin-bottom: 30px;
  }

  .hero-title-svg {
    max-width: 90%;
  }

  .about-col {
    padding: 36px 24px 30px;
  }

  .carousel-arrow {
    font-size: 1.5rem;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .contact-card,
  .delta-card {
    padding: 40px 30px;
  }

  .orbit-svg {
    width: 119px;
    height: 119px;
  }

  .orbit-left-2 .orbit-svg {
    width: 119px;
    height: 119px;
  }

  .orbit-name {
    font-size: 1.2rem;
  }

  .orbit-left-1 { margin-right: -18px; }
  .orbit-left-2 { margin-right: 2px; }
  .orbit-right-1, .orbit-right-2 { margin-left: -18px; }
  .orbit-center { margin-left: -12px; margin-right: -12px; }
}