/* ============================================================
   ATbio - Home (atbio.html)
   Layout: GLOBAL TOKENS - COMMON HEADER - COMMON LINK FX
           - PAGE-LOCAL - COMMON CULTURE - COMMON FOOTER - RESPONSIVE
   Note: image paths are NOT referenced here - see inline
   style="background-image:url(...)" in the HTML for .culture / .foot-bg.
   ============================================================ */

/* ===========================================================================
   1. GLOBAL �?Fonts & Base
   =========================================================================== */

html,
body {
  font-family: "Jost", "Playfair Display", system-ui, sans-serif;
}

h1,
h2,
.brand-wordmark,
.culture .panel h3 {
  font-family: "Playfair Display", Georgia, serif;
}

/* 思源黑体：banner 主标题、各栏目大标题、HERITAGE、OUR CULTURE */
.hero h1,
.sec-title h2,
.heritage-left h2,
.culture .panel h3 {
  font-family: "Noto Sans SC", "Source Han Sans SC", "Jost", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background: #fff;
}

.page {
  max-width: 1920px;
  width: 100%;
  margin: 0 auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition:
    color 0.25s ease,
    background-color 0.3s ease,
    transform 0.3s ease;
}

/* ===========================================================================
   2. COMMON �?Top navigation (header)
   =========================================================================== */
.topbar {
  position: relative;
  z-index: 60;
  background: #fff;
  border-bottom: 1px solid #eef0f3;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25px clamp(20px, 5vw, 96px) 25px
}

.nav .logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.nav .logo img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
}

.desk-nav {
  display: flex;
  gap: 36px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.desk-nav a {
  cursor: pointer;
  position: relative;
  display: inline-block;
  transition: color 0.2s;
}

.desk-nav a:hover,
.desk-nav a.active {
  color: #9EE3DE;
}

.nav-right {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 12px;
  position: relative;
}

/* Language pill */
.lang-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid #d6dbe1;
  background: #fff;
  font-size: 12px;
  cursor: pointer;
  position: relative;
}

.lang-pill:hover {
  border-color: #9EE3DE;
  color: #9EE3DE;
}

.lang-pill .lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #fff;
  border: 1px solid #eef0f3;
  border-radius: 14px;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.15);
  padding: 6px;
  display: none;
  min-width: 120px;
  z-index: 80;
}

.lang-pill:hover .lang-menu,
.lang-pill:focus-within .lang-menu {
  display: block;
}

.lang-pill .lang-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
}

.lang-pill .lang-menu a:hover {
  background: #f1f6fb;
  color: #9EE3DE;
}

/* PC search reveal */
.search-wrap {
  display: inline-flex;
  align-items: center;
}

.search-input {
  width: 0;
  opacity: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #f1f6fb;
  font-size: 12px;
  outline: none;
  margin-right: 0;
  transition:
    width 0.55s cubic-bezier(0.65, 0.05, 0.36, 1),
    opacity 0.35s ease,
    padding 0.45s ease,
    margin 0.45s ease,
    border-color 0.35s ease,
    box-shadow 0.45s ease;
}

.search-wrap:hover .search-input {
  width: 240px;
  opacity: 1;
  padding: 8px 16px;
  margin-right: 8px;
  border-color: #9EE3DE;
  box-shadow: 0 6px 22px -10px rgba(154, 240, 206, 0.6);
}

.search-pill {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid #d6dbe1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    transform 0.35s ease,
    color 0.2s,
    border-color 0.2s,
    background 0.3s;
}

.search-pill:hover {
  color: #9EE3DE;
  border-color: #9EE3DE;
}

.search-wrap:hover .search-pill {
  transform: rotate(90deg);
  background: #9EE3DE;
  color: #fff;
  border-color: #9EE3DE;
}

/* Mobile nav */
.mnav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid #d6dbe1;
  border-radius: 8px;
  cursor: pointer;
}

#mnav-chk {
  display: none;
}

.mnav {
  display: none;
  position: fixed;
  inset: 0;
  background: #000000;
  z-index: 200;
  flex-direction: column;
  align-items: flex-start;
  padding: 80px 32px;
  gap: 20px;
  color: #fff;
}

.mnav a {
  color: #fff;
  font-size: 18px;
  font-weight: 500;
  text-align: left;
  align-self: flex-start;
}

.mnav .mnav-close {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 28px;
  color: #fff;
  cursor: pointer;
}

.mnav input {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  border-radius: 999px;
  padding: 12px 18px;
  width: 100%;
  font-size: 14px;
}

.mnav .msearch-wrap {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  width: 100%;
  margin-top: 8px;
}

.mnav .msearch-input {
  flex: 1 1 auto;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 14px;
  outline: none;
}

.mnav .msearch-pill {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
}

.mnav .lang-select {
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 10px 40px 10px 16px;
  border-radius: 99px;
  font-size: 14px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  width: 100%;
  margin-top: 8px;
}

#mnav-chk:checked~.mnav {
  display: flex !important;
}

/* ===========================================================================
   3. COMMON �?Unified link / button / card / image interaction (fx-*)
   =========================================================================== */
.fx-link,
.desk-nav a {
  position: relative;
  display: inline-block;
  width: fit-content;
  max-width: 100%;
  line-height: 1.15;
  vertical-align: bottom;
}

.fx-btn {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.3s ease,
    letter-spacing 0.25s ease;
}

.fx-btn::after {
  display: none !important;
}

/* A 标签按钮通用 hover：与 pp-pill.active 一致（薄荷绿底 + 深色字） */
.fx-btn:hover,
.pp-pill:hover {
  background: #9EE3DE !important;
  border-color: #9EE3DE;
  box-shadow: 0 14px 32px -12px rgba(154, 240, 198, 0.55);
  transform: translateY(-2px);
  letter-spacing: 0.04em;
}

.enter-btn.fx-btn:hover,
.fx-card:hover .enter-btn {
  background: #9EE3DE;
  letter-spacing: 0.06em;
  transform: translateX(3px);
}

.fx-card {
  display: block;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.fx-card .pp-img,
.fx-card .ca-img {
  overflow: hidden;
}

.fx-card .pp-img img,
.fx-card .ca-img img {
  transition:
    transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1),
    filter 0.4s ease;
}

.fx-card:hover .pp-img img,
.fx-card:hover .ca-img img {
  transform: scale(1.07);
  filter: brightness(1.03);
}

.fx-card h4 {
  transition:
    color 0.3s ease,
    transform 0.3s ease,
    letter-spacing 0.3s ease;
  transform-origin: left center;
  display: inline-block;
}

.fx-card:hover h4 {
  color: #9EE3DE;
  transform: scale(1.1);
  letter-spacing: 0.01em;
}

.fx-card p {
  transition: color 0.3s ease;
}

.fx-img {
  display: block;
  cursor: pointer;
}

.fx-img img,
.fx-img:hover img {
  transition: none;
  transform: none;
  filter: none;
}

/* ===========================================================================
   4. PAGE-LOCAL �?Hero carousel
   =========================================================================== */
.hero {
  position: relative;
  width: 100%;
  height: 700px;
  overflow: hidden;
}

.hero-pc {
  display: block;
}

.hero-mobile {
  display: none;
}

@media (max-width:1024px) {
  .hero {
    height: auto;
    aspect-ratio: 3/4;
  }

  .hero-pc {
    display: none;
  }

  .hero-mobile {
    display: block;
  }
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition:
    opacity 1.4s ease,
    transform 7s ease;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}
.hero-slide {
   position: absolute;
   inset: 0;
   opacity: 0;
   transform: scale(1.04);
   transition: opacity 1.4s ease, transform 7s ease;
   text-decoration: none;
   color: inherit;
}

.hero-slide:not(.active) {
   pointer-events: none;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.hero-dots {
  position: absolute;
  right: clamp(16px, 2vw, 28px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

.hero-dots button {
  width: 4px;
  height: 34px;
  border-radius: 999px;
  background: rgba(13, 37, 64, 0.22);
  border: 0;
  cursor: pointer;
  padding: 0;
  position: relative;
  overflow: hidden;
  transition:
    height 0.35s,
    background 0.35s;
}

.hero-dots button.active {
  background: rgba(13, 37, 64, 0.18);
  height: 60px;
}

.hero-dots button.active::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0;
  background: #0d2540;
  border-radius: 999px;
  animation: dotFill 5.5s linear forwards;
}

@keyframes dotFill {
  from {
    height: 0;
  }
  to {
    height: 100%;
  }
}

/* ===========================================================================
   5. PAGE-LOCAL �?About card + particle/shader hosts
   =========================================================================== */
.about-card {
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 30px 80px -40px rgba(13, 37, 64, 0.25);
  padding: clamp(28px, 3.2vw, 56px);
  margin: 0px clamp(20px, 5vw, 96px) 0;
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
}

.about-left h3 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 30px;
  letter-spacing: -0.05em;
}

.about-item h4 {
  font-size: 26px;
  font-weight: 400;
  margin-bottom: 8px;
}

.about-item p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 0;
  padding-bottom: 36px;
  border-bottom: 1px solid #000;
}

.about-right {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.float-tag {
  position: absolute;
  background: #e1e1e1;
  border-radius: 14px;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.15);
  padding: 30px 38px;
  font-size: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  z-index: 3;
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.shader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  border-radius: 18px;
}

@keyframes tagFloat {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }

  25% {
    transform: translate(6px, -10px) rotate(-1deg);
  }

  50% {
    transform: translate(-4px, -14px) rotate(0.8deg);
  }

  75% {
    transform: translate(-8px, 4px) rotate(0.5deg);
  }

  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

.float-anim {
  animation: tagFloat 12s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  animation-delay: var(--d, 0s);
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .float-anim {
    animation-duration: 24s;
    animation-timing-function: linear;
  }

  .shader-canvas {
    opacity: 0.85;
  }
}

/* ===========================================================================
   6. PAGE-LOCAL �?Section titles
   =========================================================================== */
.sec-title {
  text-align: center;
}

.sec-title h2 {
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: clamp(30px, 3vw, 80px);
  font-weight: 700;
  letter-spacing: -0.05em;
  margin-bottom: 0;
}

.sec-title p {
  font-size: clamp(14px, 1vw, 18px);
  margin-top: 0px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ===========================================================================
   7. PAGE-LOCAL �?Product portfolio grid
   =========================================================================== */
.pp-pills {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: 30px 0 40px;
  flex-wrap: wrap;
}

.pp-pill {
  padding: 5px 22px;
  border-radius: 999px;
  min-width: 50px;
  text-align: center;
  background: #f1f3f5;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid transparent;
  display: inline-block;
  cursor: pointer;
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.3s ease;
}

.pp-pill.active {
  background: #9EE3DE;
}

.pp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 0 clamp(20px, 5vw, 96px);
}

.pp-card {
  background: #eef1f4;
  border-radius: 14px;
  margin: 10px;
  width: 101%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pp-card .pp-img {
  width: 100%;
  aspect-ratio: 420/300;
  flex: 0 0 auto;
  overflow: hidden;
  background: #e3e3e3;
}

.pp-card .pp-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pp-card .pp-meta {
  flex: 1 1 auto;
  padding: 10px 18px 14px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 2px;
}

.pp-card .pp-meta h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 0;
}

.pp-card .pp-meta p {
  font-size: 16px;
  margin: 0 0 15px;
}

/* ===========================================================================
   8. PAGE-LOCAL �?Why choose us
   =========================================================================== */
.why-photo {
  display: block;
  padding: 60px 0 30px;
}

.why-photo img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: #fff;
}

.why-wrap {
  position: relative;
  padding: 30px clamp(20px, 5vw, 96px) 90px;
  display: flex;
  justify-content: center;
}

.why-cluster {
  position: relative;
  width: min(820px, 100%);
  min-height: 380px;
}

.why-cluster .ani-stage-sm {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  max-width: 480px;
  height: 280px;
  z-index: 1;
}

.why-card {
  position: absolute;
  background: #E4E4E4;
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: 0 18px 40px -16px rgba(0, 0, 0, 0.15);
  width: 280px;
  z-index: 3;
}

.why-card h4 {
  font-size: 16px;
  font-weight: 400;
  margin-top: 3px;
  margin-bottom: -10px;
}

.why-card p {
  font-size: 14px;
  line-height: 1.55;
}

.wc-1 {
  left: 6%;
  top: 0;
}

.wc-2 {
  right: 6%;
  top: 0;
}

.wc-3 {
  left: 50%;
  top: 42%;
  transform: translateX(-50%);
}

.wc-4 {
  left: 6%;
  bottom: 0;
}

.wc-5 {
  right: 6%;
  bottom: 0;
}

/* ===========================================================================
   9. PAGE-LOCAL �?Partner advantages
   =========================================================================== */
.pa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 30px clamp(20px, 5vw, 96px) 0;
}

.pa-card {
  background: #f5f7f9;
  border: 1px solid #eef0f3;
  border-radius: 14px;
  padding: 32px;
  height: auto;
  display: flex;
  flex-direction: column;
}

.pa-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid #9EE3DE;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9EE3DE;
  margin-bottom: 24px;
}

.pa-card h4 {
  font-size: 28px;
  font-weight: 700;
  padding-bottom: 14px;
  border-bottom: 1px solid #d6dbe1;
}

.pa-card p {
  font-size: 16px;
  line-height: 1.8;
  margin-top: 18px;
}

/* ===========================================================================
   10. PAGE-LOCAL �?Heritage block
   =========================================================================== */
.heritage {
  margin: 80px clamp(20px, 5vw, 96px);
  background: #f9f9f9;
  border-radius: 18px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  overflow: hidden;
}

.heritage-left {
  padding: clamp(28px, 3vw, 56px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.heritage-left h2 {
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  letter-spacing: -0.02em;
  font-weight: 700;
  font-size: clamp(30px, 3vw, 80px);
  line-height: 1.1;
}

.heritage-left p {
  font-size: 18px;
  margin: 10% 0 30%;
  line-height: 1.7;
}

.heritage-btn {
  align-self: flex-start;
  background: rgba(0, 0, 0, .35);
  color: #fff;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}

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

/* ===========================================================================
   11. PAGE-LOCAL �?Clinical applications + News (shared 400x260 image box)
   =========================================================================== */
.ca-grid,
.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding: 30px clamp(20px, 5vw, 96px) 0;
}

.ca-grid {
  padding-bottom: 60px;
}

.ca-card,
.news-card {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: 0px;
  background: transparent;
}

.ca-card .ca-img,
.news-card .ca-img {
  position: relative;
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  background: #f1f3f5;
  opacity: 0.9;
}

.ca-card .ca-img img,
.news-card .ca-img img {
  width: 100%;
  height: 65%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.ca-card .ca-img .play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.ca-card .ca-meta,
.news-card .ca-meta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2em 1em 2em;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 15px;
  background: #E9E9E9;
  z-index: 3;
}

.ca-card .ca-meta h4,
.news-card .ca-meta h4 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  margin: 0;
}

.news-section {
  background: #f5f7f9;
  padding: 80px 0;
}

.enter-btn {
  display: inline-flex;
  align-self: flex-start;
  background: rgba(0, 0, 0, .35);
  color: #fff;
  padding: 5px 14px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  align-items: center;
  gap: 6px;
}

/* ===========================================================================
   12. COMMON �?Our culture banner
   (background image is set inline on the .culture element in HTML)
   =========================================================================== */
.culture {
  position: relative;
  overflow: hidden;
  height: clamp(280px, 22vw, 420px);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture .panel {
  background: rgba(230, 232, 235, 0.18);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  padding: 0 clamp(40px, 6vw, 90px);
  width: 80%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.culture .panel h3 {
  font-family: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 280%;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: #fff;
  margin: 0;
}

.culture .panel p {
  font-size: 140%;
  line-height: 1.7;
  margin-top: 20px;
  color: #fff;
  max-width: 60ch;
}

/* ===========================================================================
   13. COMMON �?Footer
   (.foot-bg background image is set inline on the element in HTML)
   =========================================================================== */
footer {
  background: #fff;
  padding: 50px clamp(20px, 5vw, 96px) 0;
}

.foot-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 30px;
  border-bottom: 1px solid #eef0f3;
  padding-bottom: 30px;
}

.foot-top h4 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.foot-top p {
  font-size: 18px;
  line-height: 1.65;
}

.socials {
  display: flex;
  gap: 10px;
  align-items: center;
  align-self: flex-end;
}

.socials a {
  width: 32px;
  height: 32px;
  border: 1px solid #000000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  background: #000000;
  color: #fff;
  transition:
    background 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease,
    transform 0.3s ease;
}

.socials a:hover {
  background: #fff;
  color: #000000;
  border-color: #000000;
  transform: translateY(-2px);
}

.socials .wechat {
  position: relative;
}

.socials .wechat .qrcode {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 10px;
  width: 120px;
  height: 120px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  display: none;
  padding: 8px;
}

.socials .wechat .qrcode img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.socials .wechat:hover .qrcode {
  display: block;
}

.foot-bg {
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  height: auto;
  margin: 0 calc(-1 * clamp(20px, 5vw, 96px)) 0;
  padding: 0 clamp(20px, 5vw, 96px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.foot-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
  padding: 60px 0 40px;
}

.foot-cols h5 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 5px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.foot-cols a,
.foot-cols p {
  font-size: 18px;
  line-height: 1.5;
  display: block;
}

.foot-cols a {
  transition:
    color 0.25s ease,
    transform 0.25s ease;
}

.foot-cols a:hover {
  color: #9EE3DE;
  transform: translateX(3px);
}

.foot-bottom {
  position: relative;
  padding: 60px 0;
  text-align: center;
}

.foot-bottom .big-logo {
  display: inline-block;
  width: 20%;
  max-width: 280px;
  min-width: 120px;
  line-height: 0;
}

.foot-bottom .big-logo img {
  width: 100%;
  height: auto;
  display: block;
}

.foot-bottom small {
  display: block;
  font-size: 12px;
  margin-top: 4px;
  letter-spacing: 0.02em;
}

/* ===========================================================================
   14. RESPONSIVE
   =========================================================================== */
@media (max-width: 1280px) {

  .pp-grid,
  .ca-grid,
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {

  .desk-nav,
  .nav-right .pc-only {
    display: none;
  }

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

@media (max-width: 900px) {
  .about-card {
    grid-template-columns: 1fr;
  }

  .pp-grid,
  .ca-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .foot-cols {
    grid-template-columns: 1fr 1fr;
  }

  .culture .panel {
    width: 92%;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 4px clamp(16px, 4vw, 24px);
  }

  .nav .logo img {
    height: 34px;
  }

  .hero-inner {
    align-items: flex-start;
  }

  .hero-content {
    align-items: flex-start;
  }

  .hero h1,
  .hero p {
    text-align: left;
  }
}

@media (max-width: 760px) {
  .culture .panel h3 {
    font-size: clamp(28px, 6vw, 36px);
  }

  .culture .panel p {
    font-size: clamp(14px, 3vw, 18px);
    line-height: 1.5;
  }

  .hero h1 {
    max-width: 100%;
    word-break: normal;
  }
}

@media (max-width: 560px) {

  .pp-grid,
  .ca-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .why-cluster {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: auto;
  }

  .why-card {
    position: static;
    width: 100%;
  }

  .wc-1,
  .wc-2,
  .wc-3,
  .wc-4,
  .wc-5 {
    position: static;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    transform: none;
  }

  .why-cluster .ani-stage-sm {
    display: none;
  }
}