/* ============================================================
   ABOUT.CSS — About 模块
   前缀：about-
   依赖：common.css
   ============================================================ */

/* ============================================================
   BANNER
   ============================================================ */
.about-banner {
  width: 100%;
  height: 440px;
  position: relative;
  overflow: hidden;
  background-color: #0F2E1A;
  background-image: url('/images/banner-about.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.25) 50%, rgba(0,0,0,0.45) 100%);
  z-index: 1;
}
.about-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  padding: 0 24px;
}
.about-banner-content .about-eyebrow {
  display: inline-block;
  color: rgba(255,255,255,0.85);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 40px;
  backdrop-filter: blur(4px);
}
.about-banner-content h1 {
  color: white;
  font-weight: 600;
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.25);
}
.about-banner-content p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.7;
  text-shadow: 0 1px 12px rgba(0,0,0,0.2);
}

/* ============================================================
   通用 section 结构
   ============================================================ */
.about-section { padding: 96px 0; }
.about-section.alt-bg { background: var(--gray-50); }

.about-section-head { margin-bottom: 56px; max-width: 720px; }
.about-section-head .about-eyebrow-dark {
  display: inline-block;
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.about-section-head h2 {
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--gray-800);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}
.about-section-head h2 span { color: var(--green); }
.about-section-head p {
  font-size: 1rem;
  color: var(--gray-500);
  line-height: 1.85;
}

.about-section-head-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.about-section-head-flex .about-section-head {
  margin-bottom: 0;
  flex: 1;
  min-width: 280px;
}

/* ============================================================
   轮播控制按钮
   ============================================================ */
.about-carousel-nav { display: flex; gap: 10px; flex-shrink: 0; }
.about-carousel-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1.5px solid var(--gray-300);
  background: white;
  color: var(--gray-600);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.25s ease;
  font-family: 'Inter', sans-serif;
}
.about-carousel-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-light);
  transform: translateY(-2px);
}
.about-carousel-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: var(--gray-200);
  color: var(--gray-300);
  background: white;
  transform: none;
}

/* ============================================================
   公司介绍
   ============================================================ */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-intro-text h2 {
  font-size: 2rem;
  font-weight: 400;
  color: var(--gray-800);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 22px;
}
.about-intro-text h2 span { color: var(--green); }
.about-intro-text p {
  font-size: 0.98rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 18px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--gray-200);
}
.about-stat .about-stat-num {
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--green);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.about-stat .about-stat-num sup { font-size: 1.1rem; top: -1em; margin-left: 2px; }
.about-stat .about-stat-label {
  font-size: 0.78rem;
  color: var(--gray-400);
  letter-spacing: 0.5px;
  font-weight: 500;
  text-transform: uppercase;
}

.about-intro-media {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-intro-media .about-media-main {
  width: 100%;
  height: 460px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #E4EDE7;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  position: relative;
}
.about-intro-media .about-media-main img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.about-intro-media .about-media-main .about-fallback {
  font-size: 5rem;
  color: var(--green);
  opacity: 0.2;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}
.about-intro-media .about-media-badge {
  position: absolute;
  bottom: 28px;
  left: 28px;
  background: white;
  border-radius: 14px;
  padding: 18px 24px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: 14px;
}
.about-intro-media .about-media-badge .badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--green-light);
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.about-intro-media .about-media-badge .badge-text { display: flex; flex-direction: column; }
.about-intro-media .about-media-badge .badge-text strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-800);
  line-height: 1.3;
}
.about-intro-media .about-media-badge .badge-text span {
  font-size: 0.78rem;
  color: var(--gray-400);
}

/* ============================================================
   轮播通用容器
   ============================================================ */
.about-carousel-wrap { position: relative; overflow: hidden; }
.about-carousel-track {
  display: flex;
  gap: 24px;
  transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: transform;
}

.about-carousel-item {
  flex-shrink: 0;
  width: calc((100% - 72px) / 4);
}
.about-carousel-track.about-cols-3 .about-carousel-item {
  width: calc((100% - 56px) / 4);
}
.about-carousel-track.about-cols-4 .about-carousel-item {
  width: calc((100% - 72px) / 4);
}

/* ============================================================
   证书卡片
   ============================================================ */
.about-cert-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  transition: 0.3s ease;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.about-cert-card:hover {
  border-color: var(--green);
  box-shadow: 0 16px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.about-cert-card .about-cert-img {
  height: 240px;
  background: #FAFBFA;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 20px;
  border-bottom: 1px solid var(--gray-100);
}
.about-cert-card .about-cert-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.4s ease;
}
.about-cert-card:hover .about-cert-img img { transform: scale(1.05); }
.about-cert-card .about-cert-img .about-fallback {
  font-size: 3rem;
  color: var(--green);
  opacity: 0.2;
}
.about-cert-card .about-cert-body {
  padding: 18px 20px 20px;
  text-align: center;
  flex: 1;
}
.about-cert-card .about-cert-body h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 4px;
  line-height: 1.4;
}
.about-cert-card .about-cert-body span {
  font-size: 0.76rem;
  color: var(--gray-400);
  letter-spacing: 0.3px;
}

/* ============================================================
   荣誉卡片（图片版）
   ============================================================ */
.about-honor-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  transition: 0.3s ease;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.about-honor-card:hover {
  border-color: var(--green);
  box-shadow: 0 16px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.about-honor-card .about-honor-img {
  height: 220px;
  background: #FAFBFA;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 20px;
  border-bottom: 1px solid var(--gray-100);
  position: relative;
}
.about-honor-card .about-honor-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.4s ease;
}
.about-honor-card:hover .about-honor-img img { transform: scale(1.05); }
.about-honor-card .about-honor-img .about-fallback {
  font-size: 3rem;
  color: var(--green);
  opacity: 0.2;
}
.about-honor-card .about-honor-img .about-honor-year-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--green);
  color: white;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 30px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(29,122,74,0.25);
}
.about-honor-card .about-honor-body {
  padding: 20px 22px 22px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about-honor-card .about-honor-body h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 5px;
  line-height: 1.45;
}
.about-honor-card .about-honor-body p {
  font-size: 0.84rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================================
   专利卡片（无简介）
   ============================================================ */
.about-patent-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  transition: 0.3s ease;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.about-patent-card:hover {
  border-color: var(--green);
  box-shadow: 0 16px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.about-patent-card .about-patent-img {
  height: 260px;
  background: #FAFBFA;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 20px;
}
.about-patent-card .about-patent-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.4s ease;
}
.about-patent-card:hover .about-patent-img img { transform: scale(1.04); }
.about-patent-card .about-patent-img .about-fallback {
  font-size: 3rem;
  color: var(--green);
  opacity: 0.2;
}
.about-patent-card .about-patent-body {
  padding: 16px 20px 20px;
  text-align: center;
  border-top: 1px solid var(--gray-100);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about-patent-card .about-patent-body h4 {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-800);
  line-height: 1.45;
  margin-bottom: 4px;
}
.about-patent-card .about-patent-body span {
  font-size: 0.72rem;
  color: var(--gray-400);
  letter-spacing: 0.3px;
}

/* ============================================================
   CTA
   ============================================================ */
.about-section-cta {
  padding: 88px 0;
  background: var(--green-bg);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.about-section-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.about-section-cta h2 {
  color: white;
  font-weight: 300;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 1;
}
.about-section-cta p {
  color: rgba(255,255,255,0.55);
  font-size: 1.05rem;
  margin: 10px 0 30px;
  max-width: 100%;
  position: relative;
  z-index: 1;
}
.about-section-cta .btn-primary {
  background: white;
  color: var(--green-dark);
  position: relative;
  z-index: 1;
}
.about-section-cta .btn-primary:hover {
  background: var(--green-light);
  color: var(--green-dark);
}

/* ============================================================
   ABOUT 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .about-intro-grid { gap: 48px; }
  .about-intro-media .about-media-main { height: 460px; }
  .about-carousel-item { width: calc((100% - 48px) / 3); }
  .about-carousel-track.about-cols-3 .about-carousel-item { width: calc((100% - 48px) / 3); }
  .about-carousel-track.about-cols-4 .about-carousel-item { width: calc((100% - 48px) / 3); }
}

@media (max-width: 820px) {
  .about-banner { height: 340px; }
  .about-banner-content h1 { font-size: 2.2rem; }
  .about-section { padding: 72px 0; }
  .about-section-head { margin-bottom: 40px; }
  .about-section-head h2 { font-size: 1.8rem; }

  .about-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-intro-media { order: -1; }
  .about-intro-media .about-media-main { height: 460px; }
  .about-intro-text h2 { font-size: 1.6rem; }
  .about-stats { gap: 16px; }
  .about-stat .about-stat-num { font-size: 2rem; }

  .about-section-head-flex { gap: 20px; margin-bottom: 36px; }
  .about-section-head-flex .about-section-head { min-width: 100%; }

  .about-carousel-item { width: calc((100% - 24px) / 2); }
  .about-carousel-track.about-cols-3 .about-carousel-item { width: calc((100% - 24px) / 2); }
  .about-carousel-track.about-cols-4 .about-carousel-item { width: calc((100% - 24px) / 2); }

  .about-cert-card .about-cert-img { height: 200px; }
  .about-patent-card .about-patent-img { height: 220px; }
  .about-honor-card .about-honor-img { height: 190px; }
}

@media (max-width: 768px) {
  .about-banner { height: 280px; background-position: 50% 30%; }
  .about-banner-content h1 { font-size: 1.8rem; }
  .about-banner-content p { font-size: 0.92rem; }
  .about-banner-content .about-eyebrow { font-size: 0.7rem; padding: 4px 12px; }

  .about-section { padding: 56px 0; }
  .about-section-head { margin-bottom: 32px; }
  .about-section-head h2 { font-size: 1.5rem; }
  .about-section-head p { font-size: 0.92rem; }

  .about-intro-text h2 { font-size: 1.4rem; }
  .about-intro-text p { font-size: 0.92rem; }
  .about-intro-media .about-media-main { height: 360px; }
  .about-intro-media .about-media-badge { padding: 14px 18px; bottom: 20px; left: 20px; }
  .about-intro-media .about-media-badge .badge-icon { width: 38px; height: 38px; font-size: 0.95rem; }
  .about-intro-media .about-media-badge .badge-text strong { font-size: 0.85rem; }
  .about-intro-media .about-media-badge .badge-text span { font-size: 0.72rem; }

  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; padding-top: 28px; }
  .about-stat .about-stat-num { font-size: 1.5rem; }
  .about-stat .about-stat-label { font-size: 0.66rem; }

  .about-carousel-item { width: 85%; }
  .about-carousel-track.about-cols-3 .about-carousel-item { width: 85%; }
  .about-carousel-track.about-cols-4 .about-carousel-item { width: 85%; }

  .about-carousel-btn { width: 42px; height: 42px; font-size: 0.85rem; }

  .about-cert-card .about-cert-img { height: 200px; }
  .about-patent-card .about-patent-img { height: 220px; }
  .about-honor-card .about-honor-img { height: 190px; }
}

@media (max-width: 480px) {
  .about-banner { height: 240px; }
  .about-banner-content h1 { font-size: 1.5rem; }
  .about-section { padding: 48px 0; }
  .about-section-head h2 { font-size: 1.3rem; }
  .about-intro-media .about-media-main { height: 360px; }
  .about-intro-text h2 { font-size: 1.25rem; }

  .about-stats { grid-template-columns: 1fr 1fr; gap: 16px; }

  .about-carousel-item { width: 92%; }
  .about-carousel-track.about-cols-3 .about-carousel-item { width: 92%; }
  .about-carousel-track.about-cols-4 .about-carousel-item { width: 92%; }

  .about-honor-card .about-honor-img { height: 180px; }
}