/* ========================================
   众河汇洋(北京)人工智能科技有限公司 - 企业官网样式
   设计风格：磨砂亚麻 / 清新商务
   ======================================== */

/* CSS Variables */
:root {
    /* 配色方案 */
    --canvas-bg: #fcfcfc;
    --sky-wash: #f0f4fe;
    --midnight-blue: #020520;
    --graphite-gray: #14141e;
    --slate-gray: #374151;
    --fog-gray: #696a72;
    --deep-fog: #95959b;
    --steel-gray: #6b7280;
    --signal-blue: #145aff;
    --action-blue: #0f1f3d;
    --emerald-green: #16ca2e;
    --coral-red: #f26052;
    --sky-info: #0099ff;
    --amber-tag: #ffa64d;
    
    /* 渐变 */
    --hero-gradient: radial-gradient(97.8% 181.6% at 53.7% 50%, rgb(20, 20, 30) 0%, rgba(88, 107, 141, 0.8) 100%);
    --blue-gradient: linear-gradient(rgb(59, 130, 246) 0%, rgb(20, 90, 255) 100%);
    
    /* 阴影 */
    --card-shadow: rgba(0, 0, 0, 0.1) 0px 0px 4px -2px;
    --card-shadow-hover: rgba(0, 0, 0, 0.15) 0px 4px 12px -2px;
    --feature-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, 
                      rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, 
                      rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    --blue-glow: rgba(20, 90, 255, 0.1) 0px 0px 50px -28px, 
                 rgba(0, 0, 0, 0.18) 0px 0px 3px -1px;
    
    /* 圆角 */
    --radius-pill: 100px;
    --radius-card: 8px;
    --radius-badge: 4px;
    --radius-image: 16px;
    --radius-input: 12px;
    --radius-modal: 32px;
    --radius-button: 12px;
    --radius-large-card: 40px;
    
    /* 间距 */
    --section-gap: 80px;
    --element-gap: 12px;
    --max-width: 1200px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--slate-gray);
    background-color: var(--canvas-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--midnight-blue);
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 56px;
    letter-spacing: -1.51px;
}

h2 {
    font-size: 40px;
    letter-spacing: -0.76px;
}

h3 {
    font-size: 22px;
    letter-spacing: -0.22px;
}

h4 {
    font-size: 18px;
    letter-spacing: -0.16px;
}

p {
    color: var(--slate-gray);
    line-height: 1.6;
}

a {
    color: var(--action-blue);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: var(--signal-blue);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Section */
.section {
    padding: var(--section-gap) 0;
}

.section-alt {
    background-color: var(--sky-wash);
}

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

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    color: var(--fog-gray);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 86px;
    background: rgba(252, 252, 252, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 32px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0;
    color: var(--midnight-blue);
    flex-shrink: 0;
}

.nav-logo-image {
    width: auto;
    height: 54px;
    object-fit: contain;
    display: block;
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--blue-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 16px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
    list-style: none;
}

.nav-links a {
    padding: 12px 22px;
    color: var(--slate-gray);
    font-size: 17px;
    font-weight: 500;
    border-radius: var(--radius-pill);
    transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--sky-wash);
    color: var(--midnight-blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-actions .btn {
    padding: 12px 24px;
    font-size: 15px;
}

.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--midnight-blue);
    cursor: pointer;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-button);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
    font-family: inherit;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.8);
    color: var(--action-blue);
    border: 1px solid var(--action-blue);
}

.btn-outline:hover {
    background: var(--action-blue);
    color: white;
    border-color: var(--action-blue);
}

.btn-primary {
    background: var(--blue-gradient);
    color: white;
    font-weight: 600;
    box-shadow: var(--blue-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(20, 90, 255, 0.3);
}

.btn-ghost {
    background: var(--canvas-bg);
    color: var(--signal-blue);
    border: 1px solid rgba(20, 90, 255, 0.3);
    border-radius: var(--radius-pill);
}

.btn-ghost:hover {
    background: var(--sky-wash);
    border-color: var(--signal-blue);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hero-gradient);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-pill);
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 32px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-badge i {
    color: var(--amber-tag);
}

.hero h1 {
    color: white;
    font-size: clamp(36px, 6vw, 64px);
    letter-spacing: -2px;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    font-size: 36px;
    font-weight: 600;
    color: white;
    letter-spacing: -1px;
}

.hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    border-radius: var(--radius-card);
    padding: 32px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--sky-wash);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--signal-blue);
    font-size: 20px;
}

.feature-card h3 {
    margin-bottom: 12px;
    font-size: 18px;
}

.feature-card p {
    color: var(--fog-gray);
    font-size: 14px;
    line-height: 1.6;
}

/* ========================================
   About Section
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    margin-bottom: 24px;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--steel-gray);
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

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

.about-highlight-icon {
    width: 32px;
    height: 32px;
    background: var(--sky-wash);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--signal-blue);
    flex-shrink: 0;
}

.about-highlight h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.about-highlight p {
    font-size: 12px;
    color: var(--fog-gray);
    margin: 0;
}

.about-image {
    position: relative;
}

.about-image-card {
    background: var(--sky-wash);
    border-radius: var(--radius-large-card);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.about-image-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(20, 90, 255, 0.08) 0%, transparent 50%);
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, rgba(20, 90, 255, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
    border-radius: var(--radius-image);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.about-image-placeholder i {
    font-size: 64px;
    color: var(--signal-blue);
    opacity: 0.3;
}

/* ========================================
   Products Section
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.product-card {
    background: white;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.product-image {
    height: 200px;
    background: var(--sky-wash);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
}

.product-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 90, 255, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.product-image i {
    font-size: 48px;
    color: var(--signal-blue);
    opacity: 0.6;
    position: relative;
    z-index: 1;
}

.product-content {
    padding: 24px;
}

.product-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(20, 90, 255, 0.08);
    color: var(--signal-blue);
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--radius-badge);
    margin-bottom: 12px;
}

.product-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.product-content p {
    color: var(--fog-gray);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--action-blue);
    font-size: 13px;
    font-weight: 500;
}

.product-link:hover {
    gap: 10px;
}

/* ========================================
   Timeline Section
   ======================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--signal-blue), transparent);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: calc(50% - 40px);
    background: white;
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--card-shadow);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 24px;
    width: 16px;
    height: 16px;
    background: var(--signal-blue);
    border-radius: 50%;
    transform: translateX(-50%);
    border: 3px solid var(--canvas-bg);
    box-shadow: 0 0 0 3px rgba(20, 90, 255, 0.2);
}

.timeline-year {
    font-size: 12px;
    font-weight: 600;
    color: var(--signal-blue);
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 13px;
    color: var(--fog-gray);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--steel-gray);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item-icon {
    width: 40px;
    height: 40px;
    background: var(--sky-wash);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--signal-blue);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 13px;
    color: var(--fog-gray);
}

.contact-form {
    background: white;
    border-radius: var(--radius-large-card);
    padding: 40px;
    box-shadow: var(--feature-shadow);
}

.contact-form h3 {
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--graphite-gray);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e5e5e5;
    border-radius: var(--radius-input);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--canvas-bg);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--signal-blue);
    box-shadow: 0 0 0 3px rgba(20, 90, 255, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--midnight-blue);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: white;
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-logo {
    height: 36px;
    width: auto;
    display: block;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-qrcode {
    margin-top: 8px;
}

.footer-qrcode img {
    width: 112px;
    height: 112px;
    object-fit: cover;
    border-radius: 12px;
    background: white;
    padding: 6px;
}

.footer-qrcode p {
    margin-top: 10px;
    margin-bottom: 0;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-social a {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.2s ease;
}

.footer-social a:hover {
    background: var(--signal-blue);
    color: white;
}

.footer-column h4 {
    color: white;
    font-size: 14px;
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    transition: color 0.2s ease;
}

.footer-column ul a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links a:hover {
    color: white;
}

/* ========================================
   Page Header (Inner Pages)
   ======================================== */
.page-header {
    background: var(--hero-gradient);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
}

.page-header h1 {
    color: white;
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 16px;
    position: relative;
}

.page-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 13px;
    position: relative;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a:hover {
    color: white;
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.4);
}

.breadcrumb .current {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   About Page Specific
   ======================================== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.value-card {
    background: white;
    border-radius: var(--radius-card);
    padding: 32px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.value-icon {
    width: 64px;
    height: 64px;
    background: var(--sky-wash);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--signal-blue);
    font-size: 24px;
}

.value-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--fog-gray);
    font-size: 14px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.team-card {
    background: white;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.team-avatar {
    height: 200px;
    background: var(--sky-wash);
    display: flex;
    align-items: center;
    justify-content: center;
}

.team-avatar i {
    font-size: 64px;
    color: var(--signal-blue);
    opacity: 0.4;
}

.team-info {
    padding: 20px;
    text-align: center;
}

.team-info h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.team-info p {
    font-size: 13px;
    color: var(--fog-gray);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.honor-card {
    background: white;
    border-radius: var(--radius-card);
    padding: 28px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.honor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.honor-icon {
    width: 56px;
    height: 56px;
    background: var(--sky-wash);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--signal-blue);
    font-size: 22px;
    margin-bottom: 20px;
}

.honor-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.honor-card p {
    color: var(--fog-gray);
    font-size: 14px;
    line-height: 1.7;
}

.qualifications-section {
    overflow: hidden;
}

.qualifications-carousel {
    position: relative;
    padding: 0 72px;
}

.qualifications-viewport {
    overflow: hidden;
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
}

.qualifications-viewport::before,
.qualifications-viewport::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.qualifications-viewport::before {
    left: 0;
    background: linear-gradient(90deg, rgba(252, 252, 252, 0.98) 0%, rgba(252, 252, 252, 0) 100%);
}

.qualifications-viewport::after {
    right: 0;
    background: linear-gradient(270deg, rgba(252, 252, 252, 0.98) 0%, rgba(252, 252, 252, 0) 100%);
}

.qualifications-track {
    display: flex;
    gap: 0;
    align-items: center;
    transition: transform 0.4s ease;
    will-change: transform;
    padding: 24px 0;
}

.qualification-card {
    flex: 0 0 250px;
    min-width: 250px;
    background: transparent;
    border-radius: 20px;
    padding: 0 10px;
    box-shadow: none;
    transition: transform 0.4s ease, opacity 0.4s ease, filter 0.4s ease;
    transform-origin: center center;
    opacity: 0.28;
    filter: saturate(0.8);
    position: relative;
    z-index: 1;
}

.qualification-card img {
    width: 100%;
    height: 360px;
    object-fit: contain;
    display: block;
    border-radius: 14px;
    border: 1px solid rgba(20, 90, 255, 0.08);
    background: #fff;
    box-shadow: 0 20px 48px rgba(15, 31, 61, 0.08);
}

.qualification-card h3 {
    font-size: 16px;
    margin-top: 14px;
    margin-bottom: 8px;
    text-align: center;
}

.qualification-card p {
    font-size: 13px;
    color: var(--fog-gray);
    text-align: center;
}

.qualification-card.is-active {
    transform: scale(1);
    opacity: 1;
    filter: saturate(1);
    z-index: 4;
}

.qualification-card.is-near {
    transform: scale(0.82);
    opacity: 0.65;
    z-index: 3;
}

.qualification-card.is-far {
    transform: scale(0.64);
    opacity: 0.38;
    z-index: 2;
}

.qualification-card.is-hidden-side {
    transform: scale(0.52);
    opacity: 0.18;
    z-index: 1;
}

.qualification-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: 1px solid rgba(20, 90, 255, 0.18);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.96);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--card-shadow);
    transition: all 0.2s ease;
    z-index: 2;
}

.qualification-nav:hover {
    background: var(--signal-blue);
    color: white;
    transform: translateY(-50%) scale(1.04);
}

.qualification-nav:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: translateY(-50%);
}

.qualification-nav.prev {
    left: 8px;
}

.qualification-nav.next {
    right: 8px;
}

.qualification-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.qualification-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(20, 90, 255, 0.18);
    transition: all 0.2s ease;
}

.qualification-dot.active {
    width: 22px;
    border-radius: 999px;
    background: var(--signal-blue);
}

/* ========================================
   Products Page Specific
   ======================================== */
.products-filter {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    color: var(--slate-gray);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--sky-wash);
    border-color: var(--signal-blue);
    color: var(--signal-blue);
}

.product-detail-card {
    background: white;
    border-radius: var(--radius-large-card);
    overflow: hidden;
    box-shadow: var(--feature-shadow);
    margin-bottom: 40px;
}

.product-detail-image {
    height: 300px;
    background: var(--sky-wash);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-image i {
    font-size: 80px;
    color: var(--signal-blue);
    opacity: 0.4;
}

.product-detail-content {
    padding: 40px;
}

.product-detail-content h2 {
    font-size: 28px;
    margin-bottom: 16px;
}

.product-detail-content p {
    color: var(--steel-gray);
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.product-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--sky-wash);
    border-radius: var(--radius-input);
}

.product-feature-item i {
    color: var(--signal-blue);
}

.product-feature-item span {
    font-size: 13px;
    color: var(--graphite-gray);
}

.solution-card-image {
    height: 180px;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 20px;
    background: var(--sky-wash);
}

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

/* ========================================
   Contact Page Specific
   ======================================== */
.contact-page-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

.contact-map {
    background: var(--sky-wash);
    border-radius: var(--radius-large-card);
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
}

.contact-map i {
    font-size: 48px;
    color: var(--signal-blue);
    opacity: 0.4;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .about-content,
    .contact-content,
    .contact-page-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .qualification-card {
        flex-basis: 220px;
        min-width: 220px;
    }

    .qualification-card img {
        height: 300px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-gap: 60px;
    }
    
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }
    
    .navbar .container {
        padding: 0 16px;
    }

    .nav-logo-image {
        height: 43px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 86px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 16px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-mobile-toggle {
        display: block;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: row;
        padding-left: 50px;
    }
    
    .timeline-content {
        width: 100%;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }

    .qualifications-carousel {
        padding: 0 52px;
    }

    .qualification-card {
        flex-basis: 220px;
        min-width: 220px;
        padding: 0 8px;
    }

    .qualification-card img {
        height: 252px;
    }

    .qualifications-viewport {
        min-height: 300px;
    }

    .qualifications-viewport::before,
    .qualifications-viewport::after {
        width: 64px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .products-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}