/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
}

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

ul {
    list-style: none;
}



.container {
    width: 80%;
    margin: 0 auto;
    max-width: 1400px;
    padding: 0 15px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
    background-color: transparent;
    padding: 15px 0;
    height: 80px;
}

.header.scrolled {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    transition: color 0.3s;
}

.logo img {
    height: 44px;
    width: auto;
    display: block;
}

.header.scrolled .logo {
    color: #000;
}

.logo i {
    font-size: 28px;
    color: #165dff;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav a {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    transition: color 0.3s;
    position: relative;
}

.header.scrolled .nav a {
    color: #333;
}

.nav a:hover, .nav a.active {
    color: #fff;
}

.header.scrolled .nav a:hover, .header.scrolled .nav a.active {
    color: #165dff;
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: #fff;
    border-radius: 2px;
}

.header.scrolled .nav a.active::after {
    background-color: #165dff;
}

.contact-btn {
    background-color: #165dff;
    color: #fff;
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.3s;
    width: auto;
}

.contact-btn:hover {
    background-color: #0e4ed8;
    color: #fff;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
    position: relative;
}
.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}
.header.scrolled .mobile-menu-toggle span {
    background-color: #333;
}
.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav-overlay {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    width: 100%;
    overflow: hidden;
    background-color: #000;
}

.hero-carousel {
    height: 100%;
    position: relative;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-item.active {
    opacity: 1;
    z-index: 1;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 2;
    text-align: center;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 56px;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 24px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    font-weight: bold;
    letter-spacing: 2px;
}

.hero-content h2 {
    font-size: 32px;
    color: #f0f0f0;
    margin-bottom: 30px;
    font-weight: normal;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    color: #eee;
    font-size: 18px;
    align-items: center;
}

.hero-tags span {
    display: flex;
    align-items: center;
}

.hero-tags .divider {
    width: 1px;
    height: 16px;
    background-color: rgba(255, 255, 255, 0.5);
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.btn-primary {
    background-color: #165dff;
    color: #fff;
    padding: 12px 27px;
    border-radius: 4px;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s;
    border: 1px solid #165dff;
    cursor: pointer;
    width: auto;
}

.btn-primary:hover {
    background-color: #0e4ed8;
    box-shadow: 0 2px 8px rgba(22, 93, 255, 0.4);
}

.btn-outline {
    background-color: rgba(0, 0, 0, 0.3);
    color: #fff;
    padding: 12px 27px;
    border-radius: 4px;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #fff;
    transition: all 0.3s;
    cursor: pointer;
    width: auto;
}

.btn-outline:hover {
    background-color: #165dff;
    color: #fff;
}

.btn-outline-pill {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 12px 30px;
    border: 1px solid #165dff;
    color: #165dff;
    border-radius: 30px;
    font-size: 16px;
    background: transparent;
    transition: all 0.3s;
    text-decoration: none;
    font-weight: 500;
}
.btn-outline-pill:hover {
    background-color: #0e4ed8;
    color: #fff;
    border-color: #0e4ed8;
    box-shadow: 0 2px 8px rgba(22, 93, 255, 0.4);
}

.carousel-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(22, 93, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.indicator.active {
    background-color: #165dff;
    width: 30px;
    border-radius: 6px;
}

/* Carousel Controls */
.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
}

.carousel-control:hover {
    background-color: #165dff;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.3);
}

.carousel-control.prev {
    left: 40px;
}

.carousel-control.next {
    right: 40px;
}

/* About Us Section */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: #f7f8fa;
}

.about-section {
    display: flex;
    align-items: center;
    gap: 80px;
}

.about-text {
    flex: 1;
}

.section-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.section-title {
    font-size: 36px;
    color: #1a1a1a;
    margin-bottom: 30px;
    font-weight: bold;
}

.title-line-left {
    width: 40px;
    height: 4px;
    background-color: #165dff;
    margin-bottom: 30px;
}

.about-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 40px;
}

.link-more {
    color: #165dff;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: opacity 0.3s;
}

.link-more:hover {
    opacity: 0.8;
}

.about-video {
    position: relative;
    flex: 1.2;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    align-self: stretch;
}

.about-video img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.about-video:hover img {
    transform: scale(1.05);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    z-index: 2;
    transition: all 0.3s;
}

.play-btn i {
    font-size: 24px;
    color: #165dff;
    margin-left: 5px;
}

.about-video:hover .play-btn {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.2);
    z-index: 1;
}

/* Course System Section */
.course-system {
    background-color: #f8f9fa;
    text-align: center;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
    margin-top: 10px;
}

.course-cards {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.course-card {
    background-color: #fff;
    border-radius: 4px;
    padding: 30px 20px;
    flex: 1;
    text-align: left;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border-top: 4px solid transparent;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-top-color: #165dff;
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-num {
    font-size: 32px;
    color: #e0e6f8;
    font-weight: bold;
}

.course-card:hover .card-num {
    color: #165dff;
}

.card-icon {
    width: 48px;
    height: 48px;
    background-color: #f0f5ff;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #165dff;
    font-size: 24px;
}

.course-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.step-info h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 12px;
    font-weight: 600;
}
.course-count {
    display: block;
    font-size: 13px;
    color: #666;
    margin-bottom: 12px;
}
.step-info p {
    font-size: 13px;
    color: #888;
    line-height: 1.5;
    margin: 0;
}

.course-desc {
    font-size: 14px;
    color: #666;
}

.btn-center {
    display: inline-flex;
    margin: 0 auto;
    width: auto;
}

/* Video List Section */
.video-list {
    padding-bottom: 80px;
}

.video-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.video-header-left {
    text-align: left;
}

.video-cards {
    display: flex;
    gap: 20px;
    position: relative;
}

.video-card {
    flex: 1;
    border-radius: 4px;
    overflow: hidden;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
}

.video-thumb {
    position: relative;
    height: 160px;
}

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

.tag-free {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: #165dff;
    color: #fff;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    z-index: 2;
}

.small-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background-color: rgba(0,0,0,0.5);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    z-index: 2;
    transition: all 0.3s;
}

.video-card:hover .small-play {
    background-color: #165dff;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 15px;
}

.video-info h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-meta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #999;
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Features Section */
.features {
    background-color: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background-color: #eef3ff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #165dff;
    font-size: 24px;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

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

/* Statistics Container Flex Fixes */
.stats-container-flex {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background-color: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.03);
    padding: 30px 0;
    margin-top: 40px;
}
.stat-item-flex {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    position: relative;
}
.stat-item-flex:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 40px;
    background-color: #eee;
}
.stat-icon-flex {
    font-size: 24px;
    color: #165dff;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    background-color: #f0f5ff;
    border-radius: 50%;
}
.stat-info-flex {
    text-align: left;
}
.stat-info-flex h3 {
    font-size: 24px;
    font-weight: bold;
    color: #165dff;
    margin-bottom: 2px;
    line-height: 1;
}
.stat-info-flex p {
    font-size: 13px;
    color: #666;
    margin: 0;
}

/* Partner Section */
.partner {
    padding: 60px 0;
}

.partner-box {
    background: linear-gradient(135deg, #e0ebff 0%, #f5f8ff 100%);
    border-radius: 4px;
    padding: 30px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.partner-box::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: 0;
    width: 50%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1552664730-d307ca884978?q=80&w=800&auto=format&fit=crop') no-repeat right bottom;
    background-size: cover;
    opacity: 0.15;
    mix-blend-mode: multiply;
    z-index: 1;
}

.partner-content {
    position: relative;
    z-index: 2;
}

.partner-content h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.partner-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

/* Footer */
.footer {
    background-color: #0a1631;
    color: #a0aaba;
    padding: 60px 0 20px;
}

.footer-top {
    display: flex;
    margin-bottom: 50px;
    justify-content: space-around;
}

.footer-brand {
    width: 35%;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 44px;
    width: auto;
    display: block;
    margin:15px 0px ;
}

.footer-logo i {
    font-size: 32px;
    color: #fff;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
}

.footer-links {
    width: 15%;
}

.footer-links h4, .footer-contact h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 25px;
    font-weight: normal;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    transition: color 0.3s;
}

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

.footer-contact {
    width: 30%;
}

.footer-contact ul li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact ul li i {
    margin-top: 4px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icons a {
    width: 36px;
    height: 36px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    transition: background-color 0.3s;
}

.social-icons a:hover {
    background-color: #165dff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 12px;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    right: 40px;
    bottom: 40px;
    width: 56px;
    height: 56px;
    background-color: #165dff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 24px;
    box-shadow: 0 4px 20px rgba(22, 93, 255, 0.3);
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(20px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: #0e4ed8;
    box-shadow: 0 6px 25px rgba(22, 93, 255, 0.5);
    transform: translateY(-5px);
}

/* Video Modal */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.video-modal.show {
    opacity: 1;
    visibility: visible;
}

.video-container {
    width: 80%;
    max-width: 900px;
    position: relative;
    background: #000;
}

.close-modal {
    position: absolute;
    top: -40px;
    right: 0;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
}

.video-container video {
    width: 100%;
    display: block;
}

/* Utility Classes for spacing and elements */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.icon-ml-5 {
    margin-left: 5px;
}

.mb-10 {
    margin-bottom: 10px !important;
}

.mt-20 {
    margin-top: 20px !important;
}

.footer-logo-sub {
    font-size: 12px;
    font-weight: normal;
    color: #a0aaba;
    margin-top: 5px;
    display: block;
}

/* --- Inner Pages Common --- */
.inner-banner {
    position: relative;
    height: 380px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 74px;
    margin-top: 0;
    width: 100%;
}

.inner-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 31, 92, 0.55) 0%, rgba(10, 31, 92, 0.65) 50%, rgba(5, 16, 50, 0.85) 100%);
    z-index: 1;
}

.inner-banner .container {
    position: relative;
    z-index: 2;
}

.inner-banner h1 {
    font-size: 44px;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.inner-banner p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.25);
}

.bg-light {
    background-color: #f8f9fa;
}

.title-line {
    width: 40px;
    height: 4px;
    background-color: #165dff;
    margin: 0 auto 40px;
}

.title-line-left {
    width: 40px;
    height: 4px;
    background-color: #165dff;
    margin-bottom: 30px;
}

.block-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 15px;
}

/* --- Course Page --- */
.course-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.video-desc {
    font-size: 13px;
    color: #666;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learning-methods {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.method-card {
    background-color: #fff;
    border-radius: 4px;
    padding: 30px 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.method-card:hover {
    transform: translateY(-5px);
}

.method-icon {
    width: 48px;
    height: 48px;
    background-color: #165dff;
    color: #fff;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    flex-shrink: 0;
}

.method-text h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: #333;
}

.method-text p {
    font-size: 13px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.method-text a {
    font-size: 13px;
    color: #165dff;
}

.cta-banner {
    background-color: #f0f5ff;
    border-radius: 8px;
    padding: 45px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url('https://images.unsplash.com/photo-1552664730-d307ca884978?q=80&w=1200&auto=format&fit=crop') no-repeat center center;
    background-size: cover;
    opacity: 0.15;
    z-index: 1;
}

.cta-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    gap: 40px;
}

.cta-text {
    flex: 1;
}

.cta-content h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 0;
}

.cta-img {
    height: 160px;
    width: auto;
}

/* --- Join Page --- */
.coop-models {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.coop-card {
    background-color: #fff;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: relative;
}

.coop-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.coop-icon {
    width: 60px;
    height: 60px;
    background-color: #165dff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    position: absolute;
    top: 170px;
    left: 30px;
    border: 4px solid #fff;
}

.coop-info {
    padding: 40px 30px 30px;
}

.coop-info h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.coop-info p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.coop-info ul li {
    font-size: 14px;
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.coop-info ul li i {
    color: #165dff;
}

/* Process Section */
.process-section {
    background: linear-gradient(180deg, #f7f9fc 0%, #f0f5ff 50%, #fafbfd 100%);
    position: relative;
    overflow: hidden;
}

.process-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 30% 30%, rgba(22, 93, 255, 0.025) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 70%, rgba(22, 93, 255, 0.025) 0%, transparent 60%);
    pointer-events: none;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 30px 0 0;
    gap: 10px;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 52px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(90deg, #165dff 0%, #4d8cff 30%, #165dff 60%, #4d8cff 100%);
    border-radius: 2px;
    z-index: 1;
}

.process-steps::after {
    content: '';
    position: absolute;
    top: 46px;
    left: 10%;
    right: 10%;
    height: 15px;
    background: linear-gradient(90deg, rgba(22, 93, 255, 0.06) 0%, rgba(77, 140, 255, 0.08) 50%, rgba(22, 93, 255, 0.06) 100%);
    border-radius: 8px;
    z-index: 0;
    filter: blur(6px);
}

.step-item {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 170px;
    flex-shrink: 0;
    padding: 0 5px;
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.step-item:hover {
    transform: translateY(-6px);
}

.step-badge {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #165dff, #3b7dff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    position: relative;
    z-index: 3;
    box-shadow: 0 4px 16px rgba(22, 93, 255, 0.3);
    transition: all 0.35s ease;
}

.step-item:hover .step-badge {
    box-shadow: 0 6px 24px rgba(22, 93, 255, 0.45);
    transform: scale(1.1);
}

.step-num {
    font-size: 18px;
    color: #fff;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1;
}

.step-icon-circle {
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 25px;
    color: #165dff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.35s ease;
}

.step-item:hover .step-icon-circle {
    box-shadow: 0 4px 18px rgba(22, 93, 255, 0.15);
    transform: scale(1.05);
}

.step-item h4 {
    font-size: 17px;
    color: #1a1a1a;
    margin-bottom: 8px;
    font-weight: 700;
    transition: color 0.3s;
}

.step-item:hover h4 {
    color: #165dff;
}

.step-item p {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
    margin: 0;
    transition: color 0.3s;
}

.step-item:hover p {
    color: #666;
}

.step-icon {
    width: 44px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    margin: 0;
}
.step-icon.blue-bg {
    background-color: #165dff;
    color: #fff;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(22, 93, 255, 0.2);
}
.step-icon.purple-bg {
    background-color: #f4efff;
    color: #8b5cf6;
    border-radius: 50%;
}
.step-icon.light-blue-bg {
    background-color: #eef3ff;
    color: #165dff;
    border-radius: 50%;
}
.step-icon.green-bg {
    background-color: #f0fdf4;
    color: #059669;
    border-radius: 50%;
}
.step-icon.orange-bg {
    background-color: #fff7ed;
    color: #ea580c;
    border-radius: 50%;
}

.apply-box {
    display: flex;
    background-color: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    overflow: hidden;
}

.apply-left {
    flex: 1;
    padding: 60px;
    background-color: #f8f9fa;
}

.apply-left h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 20px;
    line-height: 1.4;
}

.apply-left > p {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.apply-features {
    display: flex;
    gap: 30px;
}

.apply-feat-item {
    text-align: center;
}

.apply-feat-icon {
    width: 50px;
    height: 50px;
    background-color: #e0ebff;
    color: #165dff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    margin: 0 auto 10px;
}

.apply-feat-item p {
    font-size: 14px;
    color: #333;
}

.apply-right {
    flex: 1.2;
    padding: 60px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-control:focus {
    border-color: #165dff;
}

textarea.form-control {
    height: 120px;
    resize: vertical;
}

/* --- News Page --- */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 50px;
}

.news-item {
    display: flex;
    background-color: #fff;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.news-img {
    width: 320px;
    height: 200px;
    flex-shrink: 0;
}

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

.news-info {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.news-title-row h3 {
    font-size: 20px;
    color: #333;
    max-width: 80%;
}

.news-date {
    font-size: 14px;
    color: #999;
}

.news-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    color: #165dff;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    align-self: flex-start;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.page-num, .page-prev, .page-next {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #666;
    font-size: 14px;
    transition: all 0.3s;
}

.page-num.active, .page-num:hover, .page-prev:hover, .page-next:hover {
    background-color: #165dff;
    color: #fff;
    border-color: #165dff;
}

.page-dots {
    color: #999;
}

/* --- Contact Page --- */
.contact-box {
    display: flex;
    background-color: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    overflow: hidden;
}

.contact-info-list {
    flex: 1;
    padding: 50px;
}

.contact-info-list h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 40px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.info-icon {
    width: 40px;
    height: 40px;
    background-color: #e0ebff;
    color: #165dff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.info-text p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.map-img {
    flex: 1.5;
}

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

.message-form {
    flex: 1;
    padding: 50px;
}

.message-img {
    flex: 1;
    background-color: #f0f5ff;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.message-img img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.btn-submit-full {
    width: 100%;
    padding: 14px 30px;
    font-size: 16px;
    justify-content: center;
    border-radius: 6px;
}

/* --- About Page --- */
.about-intro-box {
    display: flex;
    gap: 60px;
    align-items: center;
}

.about-intro-left {
    flex: 1;
}

.about-intro-right {
    flex: 1;
}

.about-intro-right img {
    width: 100%;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    height:500px;
}

.about-features {
    display: flex;
    gap: 20px;
}

.a-feat {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    flex: 1;
}

.a-icon {
    width: 40px;
    height: 40px;
    background-color: #e0ebff;
    color: #165dff;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    flex-shrink: 0;
}

.a-text h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.a-text p {
    font-size: 12px;
    color: #666;
}

/* Timeline Section */
.timeline-section {
    background: linear-gradient(180deg, #f7f9fc 0%, #eef3ff 50%, #f7f9fc 100%);
    position: relative;
}

.timeline-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 50% 20%, rgba(22, 93, 255, 0.03) 0%, transparent 70%),
                radial-gradient(ellipse at 50% 80%, rgba(22, 93, 255, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

/* Vertical Timeline */
.vertical-timeline {
    position: relative;
    width: 100%;
    margin: 0 auto;
    padding: 20px 0;
}

.vertical-timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background: linear-gradient(180deg, #165dff 0%, #4d8cff 25%, #165dff 50%, #4d8cff 75%, #165dff 100%);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
    border-radius: 2px;
}

.v-timeline-item {
    padding: 30px 55px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.v-timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: #165dff;
    border: 4px solid #fff;
    top: 60px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 0 6px rgba(22, 93, 255, 0.12), 0 0 20px rgba(22, 93, 255, 0.15);
    transition: all 0.4s ease;
}

.v-timeline-item:hover::after {
    background-color: #0e4ed8;
    box-shadow: 0 0 0 10px rgba(22, 93, 255, 0.18), 0 0 30px rgba(22, 93, 255, 0.25);
    transform: scale(1.3);
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.right::after {
    left: -10px;
}

.v-timeline-content {
    padding: 0;
    background-color: #fff;
    position: relative;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: row;
    overflow: visible;
    align-items: stretch;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s ease;
    min-height: 220px;
}

.v-timeline-content:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(22, 93, 255, 0.1), 0 4px 12px rgba(0, 0, 0, 0.08);
}

.v-year-badge {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #165dff, #3b7dff);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    padding: 6px 20px;
    border-radius: 20px;
    z-index: 10;
    box-shadow: 0 4px 14px rgba(22, 93, 255, 0.3);
    letter-spacing: 1px;
    white-space: nowrap;
}

.v-text-box {
    padding: 75px 30px 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1.2;
    position: relative;
}

.v-step {
    font-size: 48px;
    font-weight: 900;
    color: rgba(22, 93, 255, 0.06);
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
    pointer-events: none;
}

.v-img-box {
    flex: 1;
    min-width: 220px;
    position: relative;
    overflow: hidden;
    border-radius: 16px 0 0 16px;
}

.right .v-timeline-content .v-img-box {
    border-radius: 0 16px 16px 0;
}

.v-img-box img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.v-img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(22, 93, 255, 0.05) 0%, rgba(22, 93, 255, 0.15) 100%);
    z-index: 1;
    transition: opacity 0.4s ease;
}

.v-timeline-content:hover .v-img-box img {
    transform: scale(1.08);
}

.v-timeline-content:hover .v-img-overlay {
    opacity: 0;
}

.left .v-timeline-content {
    flex-direction: row-reverse;
}

.left .v-timeline-content .v-img-box {
    border-radius: 0 16px 16px 0;
}

.left .v-timeline-content .v-step {
    right: auto;
    left: 20px;
}

.right .v-timeline-content {
    flex-direction: row;
}

.right .v-timeline-content .v-img-box {
    border-radius: 16px 0 0 16px;
}

.v-title {
    font-size: 22px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.v-desc {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin: 0;
    position: relative;
    z-index: 1;
}

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

.adv-card {
    background-color: #fff;
    border-radius: 4px;
    padding: 50px 30px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    transition: transform 0.3s, box-shadow 0.3s;
}

.adv-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.06);
}

.adv-icon {
    width: 64px;
    height: 64px;
    background-color: #eef3ff;
    color: #165dff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    margin: 0 auto 20px;
}

.adv-card h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.adv-card p {
    font-size: 13px;
    color: #666;
}

/* --- Details & Guide Pages --- */
.breadcrumb {
    font-size: 14px;
    color: #666;
}
.breadcrumb a {
    color: #666;
    transition: color 0.3s;
}
.breadcrumb a:hover {
    color: #165dff;
}

/* Guide Layout */
.layout-sidebar {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}
.sidebar {
    width: 240px;
    flex-shrink: 0;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    overflow: hidden;
}
.sidebar a {
    display: block;
    padding: 18px 24px;
    color: #333;
    font-size: 16px;
    border-bottom: 1px solid #f0f0f0;
    border-left: 4px solid transparent;
    transition: all 0.3s;
}
.sidebar a:last-child {
    border-bottom: none;
}
.sidebar a:hover, .sidebar a.active {
    color: #165dff;
    background: #f0f5ff;
    border-left-color: #165dff;
    font-weight: bold;
}
.main-content {
    flex: 1;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 30px;
}
.search-bar {
    position: relative;
    margin-bottom: 30px;
}
.search-bar input {
    width: 100%;
    padding: 15px 20px;
    padding-right: 50px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s;
}
.search-bar input:focus {
    border-color: #165dff;
}
.search-bar i {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 18px;
    cursor: pointer;
}
.article-table {
    width: 100%;
    border-collapse: collapse;
}
.article-table th {
    text-align: left;
    padding: 15px 10px;
    color: #666;
    font-weight: normal;
    font-size: 14px;
    border-bottom: 1px solid #eee;
}
.article-table td {
    padding: 18px 10px;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    color: #333;
}
.article-table tbody tr:hover {
    background-color: #f8f9fa;
}
.article-table th:nth-child(2), .article-table td:nth-child(2) {
    text-align: center;
    color: #999;
    width: 120px;
}
.article-table th:nth-child(3), .article-table td:nth-child(3) {
    text-align: right;
    color: #999;
    width: 120px;
}
.page-size {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #666;
    outline: none;
}

/* Course Detail */
.course-top-card {
    display: flex;
    gap: 40px;
    background: #fff;
    padding: 30px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}
.course-top-video {
    width: 450px;
    flex-shrink: 0;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}
.course-top-video img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.course-top-info {
    flex: 1;
}
.course-top-info h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 15px;
}
.course-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}
.course-tags span {
    padding: 4px 12px;
    background: #eef3ff;
    color: #165dff;
    font-size: 12px;
    border-radius: 4px;
}
.course-intro-text {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 30px;
}
.c-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #eee;
}
.c-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}
.c-info-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 30px;
    background-color: #eee;
}
.c-info-icon {
    font-size: 24px;
    color: #165dff;
}
.c-info-text p {
    font-size: 12px;
    color: #999;
    margin-bottom: 4px;
}
.c-info-text h5 {
    font-size: 14px;
    color: #333;
}
.course-detail-content {
    background: #fff;
    padding: 50px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.detail-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
}
.detail-section-title span {
    color: #165dff;
    font-weight: bold;
    font-size: 28px;
}
.detail-text {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}
.feature-list {
    margin-top: 40px;
}
.f-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}
.f-icon {
    color: #165dff;
    font-size: 20px;
    margin-top: 2px;
}
.f-text h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}
.f-text p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* News Detail */
.news-detail-box {
    background: #fff;
    padding: 50px 80px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 60px;
}
.news-detail-title {
    font-size: 32px;
    color: #333;
    text-align: center;
    margin-bottom: 20px;
}
.news-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: #999;
    font-size: 14px;
    margin-bottom: 40px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}
.news-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}
.news-detail-img {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 40px;
}
.news-article {
    font-size: 16px;
    color: #444;
    line-height: 1.8;
}
.news-article p {
    margin-bottom: 20px;
}
.news-article h3 {
    font-size: 20px;
    color: #333;
    margin: 40px 0 20px;
    font-weight: bold;
}
.prev-next-links {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}
.pn-link {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: #666;
    font-size: 14px;
    transition: color 0.3s;
    width: 45%;
}
.pn-link:hover {
    color: #165dff;
}
.pn-link.next {
    text-align: right;
    align-items: flex-end;
}
.pn-label {
    color: #999;
    font-size: 12px;
}
.pn-title {
    color: #165dff;
    font-weight: 500;
}

.step-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}
.step-num-top {
    font-size: 36px;
    color: #165dff;
    font-weight: 400;
    margin-bottom: 0;
    transition: color 0.3s;
    line-height: 1;
}

.course-system-flex {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 15px !important;
    margin-top: 40px;
    margin-bottom: 50px;
    width: 100% !important;
}
.course-step {
    background: #fff;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: left;
    border: 1px solid #f0f2f5;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    display: block !important;
    width: auto !important;
}

.course-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.06);
    border-color: transparent;
}

.course-step:hover .step-num-top {
    color: #0e4ed8;
}

/* ============================================= */
/*       移动端自适应样式 (最大宽度 768px)          */
/*       不影响电脑端展示效果                       */
/* ============================================= */

@media screen and (max-width: 768px) {

    /* === 容器 === */
    .container {
        width: 100%;
        padding: 0 20px;
    }

    /* === 头部导航 (手机端汉堡菜单) === */
    .header {
        height: auto;
        padding: 10px 0;
    }
    .header .container {
        flex-wrap: wrap;
        gap: 0;
        justify-content: space-between;
    }
    .header .container::before,
    .header .container::after {
        display: none;
    }
    .logo {
        font-size: 16px;
        flex-shrink: 0;
    }
    .logo img {
        height: 32px;
    }
    .mobile-menu-toggle {
        display: flex;
        flex-shrink: 0;
        order: 2;
    }
    .contact-btn {
        display: none;
    }
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background-color: #fff;
        flex-direction: column;
        gap: 0;
        padding: 80px 30px 30px;
        z-index: 1000;
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
        overflow-y: auto;
    }
    .nav::before {
        content: '导航菜单';
        position: absolute;
        top: 28px;
        left: 30px;
        font-size: 18px;
        font-weight: bold;
        color: #333;
    }
    .nav.open {
        right: 0;
    }
    .nav a {
        font-size: 16px;
        color: #333;
        padding: 14px 0;
        border-bottom: 1px solid #f0f0f0;
        display: block;
        white-space: nowrap;
        flex-shrink: unset;
        transition: color 0.3s, padding-left 0.3s;
    }
    .nav a:hover,
    .nav a.active {
        color: #165dff;
        padding-left: 6px;
    }
    .nav a.active::after {
        display: none;
    }
    .mobile-nav-overlay {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.45);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.35s ease;
    }
    .mobile-nav-overlay.show {
        opacity: 1;
        visibility: visible;
    }

    /* === Hero 轮播图 (手机端) === */
    .hero {
        height: 100vh;
        min-height: 500px;
        max-height: 700px;
    }
    .hero-carousel {
        height: 100%;
    }
    .carousel-item {
        align-items: flex-end;
        padding-bottom: 40px;
    }
    .carousel-item::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0.1) 100%);
        z-index: 0;
    }
    .hero-bg {
        object-position: center center;
    }
    .hero-content {
        max-width: 100%;
        width: 100%;
        padding: 0 24px 20px;
        text-align: center !important;
        margin: 0 !important;
    }
    .hero-content h1 {
        font-size: 24px !important;
        color: #fff !important;
        text-shadow: 0 2px 6px rgba(0,0,0,0.5) !important;
        letter-spacing: 0.5px !important;
        margin-bottom: 14px !important;
        text-align: center !important;
        line-height: 1.4 !important;
    }
    .hero-content h2 {
        font-size: 16px !important;
        color: rgba(255,255,255,0.9) !important;
        text-shadow: 0 1px 4px rgba(0,0,0,0.5) !important;
        text-align: center !important;
        margin-bottom: 18px !important;
    }
    .hero-tags {
        justify-content: center !important;
        flex-wrap: wrap !important;
        gap: 8px !important;
        margin-bottom: 24px !important;
        font-size: 12px !important;
        color: rgba(255,255,255,0.85) !important;
    }
    .hero-tags span {
        background-color: rgba(255,255,255,0.15);
        padding: 4px 10px;
        border-radius: 12px;
        backdrop-filter: blur(4px);
    }
    .hero-tags .divider {
        display: none;
    }
    .hero-btns {
        flex-direction: column !important;
        gap: 12px !important;
        align-items: center !important;
        justify-content: center !important;
    }
    .btn-primary,
    .btn-outline {
        width: 90%;
        max-width: 320px;
        padding: 13px 20px;
        font-size: 15px;
        justify-content: center;
        border-radius: 8px;
    }
    .btn-outline-pill {
        width: 90%;
        max-width: 320px;
        padding: 13px 20px;
        font-size: 15px;
        justify-content: center;
        border-radius: 8px;
    }
    .carousel-control {
        width: 36px;
        height: 36px;
        font-size: 14px;
        background-color: rgba(255,255,255,0.15);
        backdrop-filter: blur(5px);
    }
    .carousel-control.prev {
        left: 8px;
    }
    .carousel-control.next {
        right: 8px;
    }
    .carousel-indicators {
        bottom: 16px;
        gap: 8px;
    }
    .indicator {
        width: 8px;
        height: 8px;
    }
    .indicator.active {
        width: 20px;
        border-radius: 4px;
    }

    /* === Section 通用 === */
    .section {
        padding: 60px 0;
    }
    .section-title {
        font-size: 24px;
        margin-bottom: 20px;
    }
    .section-subtitle {
        font-size: 14px;
    }
    .section-header {
        margin-bottom: 30px;
    }
    .title-line {
        margin-bottom: 20px;
    }

    /* === About Section === */
    .about-section {
        flex-direction: column;
        gap: 30px;
    }
    .about-video {
        flex: none;
        align-self: auto;
        width: 100%;
        height: 280px;
    }
    .about-video img {
        display: block;
        height: 100%;
    }
    .play-btn {
        width: 56px;
        height: 56px;
    }
    .play-btn i {
        font-size: 18px;
    }

    /* === 课程体系 (5列变2列) === */
    .course-system-flex {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px !important;
    }
    .course-step {
        padding: 20px 15px;
    }
    .step-num-top {
        font-size: 28px;
    }
    .step-info h4 {
        font-size: 15px;
        margin-bottom: 6px;
    }
    .course-count {
        font-size: 12px;
        margin-bottom: 6px;
    }
    .step-info p {
        font-size: 12px;
    }
    .course-cards {
        flex-direction: column;
        gap: 15px;
    }
    .course-card {
        padding: 20px 15px;
    }

    /* === 课程卡片网格 (4列变2列) === */
    .course-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* === 视频卡片 === */
    .video-cards {
        flex-direction: column;
        gap: 15px;
    }
    .video-card {
        flex: none;
    }
    .video-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 25px;
    }
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    .video-thumb {
        height: 180px;
    }
    .video-meta {
        flex-wrap: wrap;
        gap: 8px;
    }

    /* === 教学优势网格 (4列变2列) === */
    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .adv-card {
        padding: 30px 15px;
    }
    .adv-card h3 {
        font-size: 16px;
    }
    .adv-icon {
        width: 48px;
        height: 48px;
        font-size: 22px;
        margin-bottom: 12px;
    }

    /* === 功能特性网格 (4列变2列) === */
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .feature-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 10px;
    }

    /* === 统计数据 (4列变2列) === */
    .stats-container-flex {
        grid-template-columns: repeat(2, 1fr);
        padding: 20px 0;
        gap: 15px;
    }
    .stat-item-flex {
        flex-direction: column;
        text-align: center;
        gap: 8px;
        padding: 10px;
    }
    .stat-item-flex:not(:last-child)::after {
        display: none;
    }
    .stat-info-flex {
        text-align: center;
    }
    .stat-info-flex h3 {
        font-size: 20px;
    }

    /* === 合作伙伴 === */
    .partner-box {
        flex-direction: column;
        padding: 25px 30px;
        text-align: center;
        gap: 20px;
    }
    .partner-content h2 {
        font-size: 22px;
    }
    .partner-content p {
        font-size: 15px;
        margin-bottom: 20px;
    }

    /* === Footer === */
    .footer {
        padding: 40px 0 20px;
    }
    .footer-top {
        flex-direction: column;
        gap: 30px;
        margin-bottom: 30px;
    }
    .footer-brand {
        width: 100%;
    }
    .footer-links {
        width: 100%;
    }
    .footer-contact {
        width: 100%;
    }
    .footer-logo img {
        height: 36px;
        margin: 5px;
    }

    /* === 返回顶部 === */
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 44px;
        height: 44px;
        font-size: 18px;
    }

    /* === 视频弹窗 === */
    .video-container {
        width: 95%;
    }
    .close-modal {
        top: -35px;
        font-size: 24px;
    }

    /* ===== 内页通用 ===== */
    .inner-banner {
        height: 240px;
        padding-top: 60px;
    }
    .inner-banner h1 {
        font-size: 28px;
    }
    .inner-banner p {
        font-size: 14px;
    }

    /* === 关于我们页 === */
    .about-intro-box {
        flex-direction: column;
        gap: 30px;
    }
    .about-intro-right img {
        height: 280px;
    }
    .about-features {
        flex-direction: column;
        gap: 15px;
    }
    .a-feat {
        flex-direction: row;
    }

    /* 发展历程时间线 */
    .vertical-timeline::after {
        left: 20px;
    }
    .v-timeline-item {
        width: 100%;
        padding: 15px 15px 15px 50px;
    }
    .v-timeline-item::after {
        left: 10px;
        right: auto;
        width: 14px;
        height: 14px;
    }
    .left {
        left: 0;
    }
    .right {
        left: 0;
    }
    .right::after {
        left: 10px;
    }
    .v-timeline-content {
        flex-direction: column !important;
        min-height: auto;
    }
    .v-img-box {
        min-width: auto;
        height: 200px;
        border-radius: 16px 16px 0 0 !important;
    }
    .v-text-box {
        padding: 60px 20px 20px;
    }
    .v-year-badge {
        top: 10px;
        font-size: 13px;
        padding: 4px 16px;
    }
    .v-step {
        font-size: 36px;
        top: 5px;
        right: 10px;
    }
    .left .v-timeline-content .v-step {
        left: 10px;
    }
    .v-title {
        font-size: 17px;
    }

    /* === 课程介绍页 === */
    .learning-methods {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .method-card {
        flex-direction: column;
        align-items: center;
        padding: 20px 15px;
        text-align: center;
    }
    .method-icon {
        margin: 0 auto;
    }
    .cta-banner {
        flex-direction: column;
        padding: 25px 20px;
        text-align: center;
        gap: 20px;
    }
    .cta-content {
        flex-direction: column;
        text-align: center;
        gap: 0;
    }
    .cta-text {
        padding:10px;
        text-align: center;
    }
    .cta-content h2 {
        font-size: 22px;
    }
    .cta-content .btn-primary {
        align-self: center;
    }

    /* 课程详情页 */
    .course-top-card {
        flex-direction: column;
        gap: 20px;
    }
    .cta-banner .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    .course-top-video {
        width: 100%;
        height: 220px;
    }
    .course-top-info h2 {
        font-size: 22px;
    }
    .c-info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding-bottom: 25px;
        margin-bottom: 25px;
    }
    .c-info-item:not(:last-child)::after {
        display: none;
    }
    .c-info-item:nth-child(odd)::after {
        content: '';
        position: absolute;
        right: -8px;
        top: 50%;
        transform: translateY(-50%);
        width: 1px;
        height: 25px;
        background-color: #eee;
    }
    .course-detail-content {
        padding: 25px 20px;
    }
    .feature-list {
        margin-top: 25px;
    }

    /* === 招商加盟页 === */
    .coop-models {
        grid-template-columns: repeat(1, 1fr);
        gap: 20px;
    }
    .coop-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
        top: 155px;
        left: 20px;
    }
    .coop-info {
        padding: 35px 20px 20px;
    }
    .process-steps {
        flex-direction: column;
        gap: 0;
        align-items: stretch;
        padding: 20px 0 0;
    }
    .process-steps::before {
        display: none;
    }
    .process-steps::after {
        display: none;
    }
    .step-item {
        width: 100%;
        display: flex;
        align-items: center;
        gap: 16px;
        text-align: left;
        padding: 18px 20px;
        background: #fff;
        border-radius: 12px;
        margin-bottom: 12px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    }
    .step-item:hover {
        transform: none;
        box-shadow: 0 4px 16px rgba(22, 93, 255, 0.08);
    }
    .step-badge {
        width: 40px;
        height: 40px;
        margin: 0;
        flex-shrink: 0;
    }
    .step-badge .step-num {
        font-size: 15px;
    }
    .step-icon-circle {
        display: none;
    }
    .step-item h4 {
        font-size: 16px;
        margin-bottom: 4px;
    }
    .step-item p {
        font-size: 12px;
    }
    .apply-box {
        flex-direction: column;
    }
    .apply-left {
        padding: 30px 20px;
    }
    .apply-left h2 {
        font-size: 22px;
    }
    .apply-right {
        padding: 30px 20px;
    }
    .apply-features {
        flex-direction: column;
        gap: 15px;
    }
    .form-row {
        flex-direction: column;
        gap: 15px;
    }

    /* === 新闻中心页 === */
    .news-item {
        flex-direction: column;
    }
    .news-img {
        width: 100%;
        height: 200px;
    }
    .news-info {
        padding: 20px;
    }
    .news-title-row {
        flex-direction: column;
        gap: 8px;
    }
    .news-title-row h3 {
        font-size: 16px;
        max-width: 100%;
    }
    .news-date {
        font-size: 12px;
    }

    /* === 联系我们页 === */
    .contact-box {
        flex-direction: column;
    }
    .contact-info-list {
        padding: 30px 20px;
    }
    .contact-info-list h2 {
        font-size: 22px;
        margin-bottom: 25px;
    }
    .map-img {
        min-height: 280px;
    }
    .message-form {
        padding: 30px 20px;
    }
    .message-img {
        padding: 25px;
    }

    /* === 新闻详情页 === */
    .news-detail-box {
        padding: 25px 20px;
        margin-bottom: 30px;
    }
    .news-detail-title {
        font-size: 22px;
    }
    .news-meta {
        flex-wrap: wrap;
        gap: 15px;
        margin-bottom: 25px;
        padding-bottom: 15px;
    }
    .prev-next-links {
        flex-direction: column;
        gap: 15px;
        margin-top: 30px;
        padding-top: 20px;
    }
    .pn-link {
        width: 100%;
    }
    .pn-link.next {
        text-align: left;
        align-items: flex-start;
    }

    /* === 指南/侧边栏页 === */
    .layout-sidebar {
        flex-direction: column;
        gap: 20px;
    }
    .sidebar {
        width: 100%;
    }
    .main-content {
        padding: 20px;
    }
    .article-table {
        font-size: 12px;
    }
    .article-table th,
    .article-table td {
        padding: 10px 5px;
    }
    .article-table th:nth-child(2),
    .article-table td:nth-child(2),
    .article-table th:nth-child(3),
    .article-table td:nth-child(3) {
        display: none;
    }

    /* === 分页 === */
    .pagination {
        flex-wrap: wrap;
        gap: 6px;
    }
    .page-num, .page-prev, .page-next {
        width: 34px;
        height: 34px;
        font-size: 12px;
    }
}

/* ============================================= */
/*         小屏手机端 (最大宽度 480px)             */
/* ============================================= */

@media screen and (max-width: 480px) {

    /* 课程体系变1列 */
    .course-system-flex {
        grid-template-columns: repeat(1, 1fr) !important;
    }

    /* 课程网格变1列 */
    .course-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    /* 优势/统计/功能变1列 */
    .adv-grid,
    .feature-grid,
    .stats-container-flex,
    .learning-methods {
        grid-template-columns: repeat(1, 1fr);
    }

    /* Hero 区域字号进一步缩小 */
    .hero {
        min-height: 420px;
        max-height: 600px;
    }
    .hero-content h1 {
        font-size: 20px !important;
    }
    .hero-content h2 {
        font-size: 14px !important;
    }
    .hero-tags {
        font-size: 11px !important;
        gap: 6px !important;
    }
    .hero-content {
        padding: 0 18px 16px;
    }
    .hero-btns {
        gap: 10px !important;
    }
    .btn-primary,
    .btn-outline,
    .btn-outline-pill {
        width: 100% !important;
        max-width: none;
        padding: 12px 16px;
        font-size: 14px;
    }

    /* 内页 Banner */
    .inner-banner {
        height: 200px;
    }
    .inner-banner h1 {
        font-size: 24px;
    }

    /* 页脚 */
    .footer-top {
        gap: 25px;
    }

    /* CTA Banner */
    .cta-banner {
        padding: 20px 15px;
    }
    .cta-content h2 {
        font-size: 18px;
    }
    .cta-content p {
        margin-top: -5px;
        font-size: 14px;
    }
    .cta-content .btn-primary {
        width: 100%;
    }

    /* 合作模式卡片 */
    .coop-img {
        height: 160px;
    }
    .coop-icon {
        top: 125px;
    }

    /* 联系我们 */
    .info-item {
        flex-direction: column;
        gap: 10px;
    }
    .info-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}