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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

#top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

#top-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo span {
  font-size: 20px;
  font-weight: 600;
  color: #2c3e50;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
}

.main-nav a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.main-nav a:hover {
  color: #f39c12;
}

.right-buttons {
  display: flex;
  align-items: center;
  gap: 15px;
}

.lang-switch {
  position: relative;
}

#lang-btn {
  background: transparent;
  border: 1px solid #ddd;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  transition: all 0.3s ease;
}

#lang-btn:hover {
  border-color: #f39c12;
  color: #f39c12;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  display: none;
  z-index: 10;
}

.lang-dropdown a {
  display: block;
  padding: 10px 20px;
  text-decoration: none;
  color: #333;
  transition: background 0.3s ease;
}

.lang-dropdown a:hover {
  background: #f8f9fa;
}

.lang-switch:hover .lang-dropdown {
  display: block;
}

.nav-btn {
  background: #f39c12;
  color: white;
  text-decoration: none;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background: #e74c3c;
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

.banner {
    background: url('../../Images/ronghe/f27c0535be502b742906c70222c2d759.jpeg') center/cover no-repeat;
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
}

.banner .overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.banner-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  color: white;
}

.banner-content h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.banner-desc {
  font-size: 18px;
  margin-bottom: 25px;
  opacity: 0.9;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.tag {
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  backdrop-filter: blur(5px);
}

.banner-buttons {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.btn-primary {
  background: #f39c12;
  color: white;
  text-decoration: none;
  padding: 15px 30px;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-primary:hover {
  background: #e74c3c;
  transform: translateY(-3px);
  box-shadow: 0 5px 20px rgba(243, 156, 18, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 2px solid white;
  color: white;
  text-decoration: none;
  padding: 15px 30px;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

.emphasis {
  font-size: 16px;
  font-style: italic;
  opacity: 0.8;
}

.section {
  padding: 80px 0;
}

.bg-light {
  background: #f8f9fa;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 20px;
  color: #2c3e50;
}

.section-desc {
  font-size: 16px;
  color: #666;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card-img {
  overflow: hidden;
  height: 200px;
}

#cdos {
  position: relative;
  overflow: hidden;
}

.cdos-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.bg-shape {
  position: absolute;
  opacity: 0.18;
}

.bg-shape-1 {
  width: 150px;
  height: 150px;
  background: #93c5fd;
  border-radius: 50%;
  top: 10px;
  left: 2%;
}

.bg-shape-2 {
  width: 90px;
  height: 90px;
  background: #fdba74;
  border-radius: 25px;
  top: 80px;
  right: 8%;
  transform: rotate(30deg);
}

.bg-shape-3 {
  width: 120px;
  height: 70px;
  background: #86efac;
  border-radius: 50% 20% 50% 20%;
  bottom: 30px;
  left: 10%;
}

.bg-shape-4 {
  width: 70px;
  height: 70px;
  background: #f9a8d4;
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  bottom: 60px;
  right: 3%;
}

.bg-shape-5 {
  width: 160px;
  height: 160px;
  background: #c7d2fe;
  border-radius: 35px 15px 35px 15px;
  top: 45%;
  right: -80px;
  transform: translateY(-50%) rotate(25deg);
}

.bg-shape-6 {
  width: 60px;
  height: 60px;
  background: #fde68a;
  border-radius: 50%;
  top: 20%;
  right: 20%;
}

.bg-shape-7 {
  width: 100px;
  height: 40px;
  background: #c7d2fe;
  border-radius: 10px;
  top: 70%;
  left: -30px;
  transform: rotate(-15deg);
}

.bg-shape-8 {
  width: 50px;
  height: 50px;
  background: #6ee7b7;
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  bottom: 20%;
  right: 15%;
  transform: rotate(45deg);
}

.bg-shape-9 {
  width: 80px;
  height: 80px;
  background: #f9a8d4;
  border-radius: 50%;
  top: 30%;
  left: 8%;
}

.bg-shape-10 {
  width: 130px;
  height: 50px;
  background: #fdba74;
  border-radius: 25px;
  bottom: 10%;
  left: 30%;
  transform: rotate(10deg);
}

.bg-irregular {
  position: absolute;
  opacity: 0.15;
}

.bg-diagonal-stripe {
  position: absolute;
  width: 400px;
  height: 400px;
  background: repeating-linear-gradient(
    135deg,
    transparent,
    transparent 10px,
    rgba(249, 115, 22, 0.08) 10px,
    rgba(249, 115, 22, 0.08) 20px
  );
  top: -150px;
  right: -100px;
  transform: rotate(45deg);
}

.bg-irregular-1 {
  width: 200px;
  height: 150px;
  background: #dbeafe;
  border-radius: 40% 60% 70% 30% / 40% 50% 50% 60%;
  top: -30px;
  left: -50px;
  transform: rotate(-15deg);
}

.bg-irregular-2 {
  width: 180px;
  height: 120px;
  background: #fed7aa;
  clip-path: polygon(20% 0%, 80% 0%, 100% 30%, 90% 70%, 70% 100%, 30% 100%, 10% 70%, 0% 30%);
  bottom: -20px;
  right: -40px;
  transform: rotate(20deg);
}

.bg-irregular-3 {
  width: 150px;
  height: 150px;
  background: #bbf7d0;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  top: 40%;
  left: -60px;
}

.bg-irregular-4 {
  width: 120px;
  height: 180px;
  background: #fce7f3;
  clip-path: ellipse(50% 40% at 50% 50%);
  bottom: 30%;
  right: -30px;
  transform: skewX(-10deg);
}

.cdos-grid {
  position: relative;
  z-index: 1;
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cdos-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
  width: 100%;
}

.cdos-row-top {
  margin-bottom: 30px;
}

.cdos-row-bottom {
  margin-top: 30px;
}

.cdos-vertical-arrows {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.cdos-v-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cdos-v-arrow-left {
  margin-left: calc(16.666% - 20px);
}

.cdos-v-arrow-right {
  margin-right: calc(16.666% - 20px);
}

.crayon-arrow-v {
  font-size: 44px;
  font-weight: 900;
  color: #f97316;
  font-family: 'Comic Sans MS', cursive, 'Brush Script MT', sans-serif;
  text-shadow: 
    3px 3px 0 rgba(249, 115, 22, 0.3),
    2px 2px 0 rgba(249, 115, 22, 0.4),
    1px 1px 0 rgba(249, 115, 22, 0.5);
  transform: scale(1, 1.2);
}

.crayon-arrow-reverse {
  font-size: 42px;
  font-weight: 900;
  color: #f97316;
  font-family: 'Comic Sans MS', cursive, 'Brush Script MT', sans-serif;
  text-shadow: 
    3px 3px 0 rgba(249, 115, 22, 0.3),
    2px 2px 0 rgba(249, 115, 22, 0.4),
    1px 1px 0 rgba(249, 115, 22, 0.5);
  transform: scale(1.3, 0.85) scaleX(-1);
  letter-spacing: -3px;
  animation: crayonWiggle 0.6s ease-in-out infinite;
}

.cdos-card {
  background: #fff;
  padding: 25px;
  border-radius: 18px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  width: calc(33.333% - 40px);
  min-width: 220px;
  flex-shrink: 0;
}

.cdos-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.cdos-icon {
  width: 55px;
  height: 55px;
  background: linear-gradient(135deg, #1a56db, #3b82f6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
}

.cdos-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1e293b;
}

.cdos-card p {
  font-size: 13px;
  color: #64748b;
  line-height: 1.6;
}

.cdos-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  flex-shrink: 0;
}

.crayon-arrow {
  font-size: 42px;
  font-weight: 900;
  color: #f97316;
  font-family: 'Comic Sans MS', cursive, 'Brush Script MT', sans-serif;
  text-shadow: 
    3px 3px 0 rgba(249, 115, 22, 0.3),
    2px 2px 0 rgba(249, 115, 22, 0.4),
    1px 1px 0 rgba(249, 115, 22, 0.5);
  transform: scale(1.3, 0.85);
  letter-spacing: -3px;
  animation: crayonWiggle 0.6s ease-in-out infinite;
}

@keyframes crayonWiggle {
  0%, 100% { transform: scale(1.3, 0.85) rotate(-3deg); }
  50% { transform: scale(1.3, 0.85) rotate(3deg); }
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card-img img {
  transform: scale(1.1);
}

.card h3 {
  padding: 20px 20px 10px;
  font-size: 18px;
  color: #2c3e50;
}

.card p {
  padding: 0 20px 20px;
  font-size: 14px;
  color: #666;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 50px;
  align-items: center;
}

.col-img img {
  width: 100%;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.col-text .section-title {
  text-align: left;
  margin-bottom: 25px;
}

.col-text .section-desc {
  text-align: left;
  margin: 0 0 30px;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.keyword-tag {
  background: #3498db;
  color: white;
  padding: 10px 25px;
  border-radius: 25px;
  font-weight: 500;
  font-size: 14px;
}

.grid-8 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.value-card {
  background: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: all 0.3s ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.value-card .icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #3498db, #2980b9);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
  font-size: 24px;
}

.value-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: #2c3e50;
}

.value-card p {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
}

.tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  background: white;
  border: 2px solid #ddd;
  padding: 12px 25px;
  border-radius: 30px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  border-color: #f39c12;
  color: #f39c12;
}

.tab-btn.active {
  background: #f39c12;
  border-color: #f39c12;
  color: white;
}

.tab-content {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.tab-text h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: #2c3e50;
}

.tab-text p {
  font-size: 16px;
  color: #666;
}

.tab-img img {
  width: 100%;
  border-radius: 15px;
}

.emphasis-center {
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: #e74c3c;
  margin-top: 30px;
}

.cdos-wrapper {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
}

.cdos-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: white;
  padding: 40px 60px;
  border-radius: 50%;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 10px 30px rgba(52, 152, 219, 0.4);
}

.cdos-center h3 {
  font-size: 18px;
}

.cdos-ring {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  padding-top: 100px;
  padding-bottom: 50px;
}

.cdos-item {
  background: white;
  padding: 25px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: all 0.3s ease;
}

.cdos-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* .cdos-icon {
  width: 50px;
  height: 50px;
  background: #f8f9fa;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 15px;
  color: #3498db;
  font-size: 20px;
} */

.cdos-item h4 {
  font-size: 16px;
  margin-bottom: 10px;
  color: #2c3e50;
}

.cdos-item p {
  font-size: 12px;
  color: #666;
  line-height: 1.5;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.course-card {
  position: relative;
  border-radius: 15px;
  overflow: hidden;
  height: 250px;
  transition: all 0.3s ease;
}

.course-card:hover {
  transform: translateY(-8px);
}

.course-img {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.course-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.course-card:hover .course-img img {
  transform: scale(1.1);
}

.course-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
}

.course-card h3 {
  position: relative;
  z-index: 1;
  color: white;
  padding: 20px;
  margin: 0;
  font-size: 18px;
}

.course-desc {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.9);
  padding: 0 20px 20px;
  font-size: 13px;
  line-height: 1.5;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.course-card:hover .course-desc {
  opacity: 1;
  transform: translateY(0);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.support-card {
  background: white;
  padding: 35px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: all 0.3s ease;
}

.support-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.support-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #f39c12, #e74c3c);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
  font-size: 28px;
}

.support-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: #2c3e50;
}

.support-card p {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
}

.col-data {
  position: relative;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.data-item {
  background: white;
  padding: 25px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.data-number {
  display: block;
  font-size: 48px;
  font-weight: 700;
  color: #f39c12;
}

.data-label {
  font-size: 14px;
  color: #666;
}

.data-img {
  position: absolute;
  bottom: -50px;
  right: 0;
  width: 200px;
  height: 150px;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.suitable-list {
  margin-bottom: 30px;
}

.suitable-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}

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

.check-icon {
  color: #27ae60;
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 5px;
}

.suitable-item h3 {
  font-size: 18px;
  margin-bottom: 5px;
  color: #2c3e50;
}

.suitable-item p {
  font-size: 14px;
  color: #666;
}

.note {
  font-size: 14px;
  color: #999;
  font-style: italic;
}

.cta {
  background: url('../../Images/ronghe/9adc6fd5bdde2ff5de0ccaa11a73e2c3.jpeg') center/cover no-repeat;
  padding: 100px 0;
  position: relative;
  text-align: center;
}

.cta .overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
}

.cta .container {
  position: relative;
  z-index: 1;
}

.cta .section-title,
.cta .section-desc {
  color: white;
}

.cta .section-desc {
  max-width: 700px;
}

.btn-large {
  padding: 20px 50px;
  font-size: 18px;
  margin-top: 20px;
}

.cta-tagline {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  margin-top: 25px;
  font-style: italic;
}

footer {
  background: #2c3e50;
  color: white;
  padding: 60px 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo span {
  font-size: 18px;
  font-weight: 600;
  display: block;
  margin-bottom: 10px;
}

.footer-logo p {
  font-size: 14px;
  color: #95a5a6;
}

.footer-contact h3,
.footer-info h3,
.footer-links h3,
.footer-qrcode h3 {
  font-size: 16px;
  margin-bottom: 15px;
  color: #ecf0f1;
}

.footer-contact p,
.footer-info p {
  font-size: 14px;
  color: #95a5a6;
  margin-bottom: 8px;
}

.footer-contact i {
  margin-right: 10px;
  color: #f39c12;
}

.footer-links a {
  display: block;
  color: #95a5a6;
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #f39c12;
}

.qrcode-box {
  width: 100px;
  height: 100px;
  background: white;
  border-radius: 10px;
}

.footer-bottom {
  border-top: 1px solid #34495e;
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #95a5a6;
  margin-bottom: 5px;
}

@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-8 {
    grid-template-columns: repeat(2, 1fr);
  }
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav,
  .right-buttons {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .banner-content h1 {
    font-size: 32px;
  }
  .banner-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .col-text .section-title,
  .col-text .section-desc {
    text-align: center;
  }
  .keywords {
    justify-content: center;
  }
  .tabs {
    gap: 10px;
  }
  .tab-btn {
    padding: 10px 15px;
    font-size: 13px;
  }
  .tab-item {
    grid-template-columns: 1fr;
    padding: 25px;
  }
  .tab-img {
    order: -1;
  }
  .cdos-ring {
    grid-template-columns: repeat(2, 1fr);
    padding-top: 150px;
  }
  .cdos-center {
    width: 150px;
    height: 150px;
  }
  .cdos-center h3 {
    font-size: 14px;
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
  .data-img {
    position: static;
    width: 100%;
    margin-top: 30px;
  }
  .support-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .banner-content h1 {
    font-size: 26px;
  }
  .banner-desc {
    font-size: 16px;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .grid-8 {
    grid-template-columns: 1fr;
  }
  .courses-grid {
    grid-template-columns: 1fr;
  }
  .cdos-ring {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr;
  }
}