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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    background-color: #0b0e1a;
    color: #e8edf5;
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1a73e8;
}

ul, ol {
    list-style: none;
}

img, svg {
    max-width: 100%;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font: inherit;
    color: inherit;
}

input, textarea {
    font: inherit;
    color: inherit;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }
h4 { font-size: 1.1rem; }

/* ===== Section ===== */
.section {
    padding: 80px 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section:nth-child(2) { animation-delay: 0.1s; }
.section:nth-child(3) { animation-delay: 0.2s; }
.section:nth-child(4) { animation-delay: 0.3s; }
.section:nth-child(5) { animation-delay: 0.4s; }
.section:nth-child(6) { animation-delay: 0.5s; }
.section:nth-child(7) { animation-delay: 0.6s; }
.section:nth-child(8) { animation-delay: 0.7s; }
.section:nth-child(9) { animation-delay: 0.8s; }
.section:nth-child(10) { animation-delay: 0.9s; }
.section:nth-child(11) { animation-delay: 1s; }
.section:nth-child(12) { animation-delay: 1.1s; }
.section:nth-child(13) { animation-delay: 1.2s; }
.section:nth-child(14) { animation-delay: 1.3s; }
.section:nth-child(15) { animation-delay: 1.4s; }
.section:nth-child(16) { animation-delay: 1.5s; }
.section:nth-child(17) { animation-delay: 1.6s; }
.section:nth-child(18) { animation-delay: 1.7s; }
.section:nth-child(19) { animation-delay: 1.8s; }
.section:nth-child(20) { animation-delay: 1.9s; }
.section:nth-child(21) { animation-delay: 2s; }
.section:nth-child(22) { animation-delay: 2.1s; }
.section:nth-child(23) { animation-delay: 2.2s; }

.section h2 {
    text-align: center;
    margin-bottom: 48px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
    padding-bottom: 12px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #1a73e8, #7c4dff);
    border-radius: 2px;
}

/* ===== Header & Navigation ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 14, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.3s;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo svg {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #1a73e8, #7c4dff);
    transition: width 0.3s;
    border-radius: 1px;
}

.nav-links a:hover::after {
    width: 100%;
}

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

.nav-actions button {
    font-size: 1.2rem;
    padding: 6px 8px;
    border-radius: 8px;
    transition: background 0.2s, transform 0.2s;
}

.nav-actions button:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: scale(1.1);
}

.menu-toggle {
    display: none;
}

/* ===== Hero Banner ===== */
#hero {
    padding-top: 64px;
}

.hero-banner {
    position: relative;
    height: 70vh;
    min-height: 400px;
    max-height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #0b0e1a 0%, #1a1f3a 50%, #0f1a2e 100%);
}

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

.slide.active {
    opacity: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
    animation: slideUp 0.8s ease forwards;
}

@keyframes slideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.hero-content h1,
.hero-content h2 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ffffff, #a0c4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    color: #fff;
    box-shadow: 0 4px 20px rgba(26, 115, 232, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(26, 115, 232, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.4);
}

.banner-controls {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 2;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.dot.active {
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    transform: scale(1.2);
}

.banner-prev,
.banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.5);
    padding: 12px 16px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    transition: background 0.3s, color 0.3s;
    z-index: 2;
}

.banner-prev:hover,
.banner-next:hover {
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
}

.banner-prev { left: 20px; }
.banner-next { right: 20px; }

/* ===== About Section ===== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.about-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 32px 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

.about-card h3 {
    margin-bottom: 12px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card p {
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
}

/* ===== Products Section ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.product-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 32px 24px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
}

.product-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px rgba(26, 115, 232, 0.15);
    background: rgba(255, 255, 255, 0.08);
}

.product-card svg {
    margin: 0 auto 16px;
    transition: transform 0.4s;
}

.product-card:hover svg {
    transform: rotate(5deg) scale(1.1);
}

.product-card h3 {
    margin-bottom: 10px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-card p {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

/* ===== Advantages Section ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    padding: 28px 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.advantage-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(26, 115, 232, 0.1);
}

.advantage-item h3 {
    margin-bottom: 10px;
    color: #1a73e8;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.6);
}

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

.solution-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 32px 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.solution-card h3 {
    margin-bottom: 12px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.solution-card p {
    color: rgba(255, 255, 255, 0.6);
}

/* ===== Applications Section ===== */
.app-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.app-list li {
    background: rgba(255, 255, 255, 0.06);
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    transition: transform 0.3s, background 0.3s, border-color 0.3s;
}

.app-list li:hover {
    transform: scale(1.05);
    background: rgba(26, 115, 232, 0.15);
    border-color: #1a73e8;
}

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

.case-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.case-card svg {
    transition: transform 0.4s;
}

.case-card:hover svg {
    transform: scale(1.03);
}

.case-card h3 {
    padding: 16px 20px 8px;
    color: #1a73e8;
}

.case-card p {
    padding: 0 20px 20px;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== Partners Section ===== */
.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.partner {
    background: rgba(255, 255, 255, 0.04);
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    transition: transform 0.3s, background 0.3s, border-color 0.3s;
}

.partner:hover {
    transform: scale(1.05);
    background: rgba(26, 115, 232, 0.1);
    border-color: #1a73e8;
}

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

.testimonial-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 32px 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: 8px;
    left: 20px;
    color: rgba(26, 115, 232, 0.2);
    font-family: Georgia, serif;
}

.testimonial-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.7;
}

.testimonial-card cite {
    font-style: normal;
    color: #1a73e8;
    font-weight: 500;
}

/* ===== News Section ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.news-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 28px 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.news-card h3 {
    margin-bottom: 10px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.news-card p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.read-more {
    color: #1a73e8;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s;
}

.read-more:hover {
    gap: 8px;
}

.related-articles {
    margin-bottom: 32px;
}

.related-articles h3 {
    margin-bottom: 16px;
    color: #1a73e8;
}

.related-articles ul {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.related-articles li a {
    background: rgba(255, 255, 255, 0.04);
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s, border-color 0.3s;
}

.related-articles li a:hover {
    background: rgba(26, 115, 232, 0.1);
    border-color: #1a73e8;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.pagination a {
    padding: 10px 24px;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s, border-color 0.3s;
}

.pagination a:hover {
    background: rgba(26, 115, 232, 0.1);
    border-color: #1a73e8;
}

/* ===== FAQ Section ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 12px;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: box-shadow 0.3s;
}

.faq-item:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.04);
}

.faq-icon {
    font-size: 1.4rem;
    transition: transform 0.3s;
    color: #1a73e8;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

.faq-answer p {
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
}

/* ===== HowTo Section ===== */
.howto-steps {
    max-width: 700px;
    margin: 0 auto;
    counter-reset: step;
}

.howto-steps li {
    counter-increment: step;
    padding: 16px 24px 16px 60px;
    position: relative;
    margin-bottom: 12px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, background 0.3s;
}

.howto-steps li::before {
    content: counter(step);
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: #fff;
}

.howto-steps li:hover {
    transform: translateX(6px);
    background: rgba(255, 255, 255, 0.08);
}

/* ===== Contact Section ===== */
.contact-info {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
    padding: 32px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-info p {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.contact-info strong {
    color: #1a73e8;
}

/* ===== Download Section ===== */
#download {
    text-align: center;
}

#download p {
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 1.1rem;
}

.download-btn {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(26, 115, 232, 0.3);
    }
    50% {
        box-shadow: 0 4px 40px rgba(26, 115, 232, 0.6);
    }
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.breadcrumb li::after {
    content: '/';
    color: rgba(255, 255, 255, 0.2);
}

.breadcrumb li:last-child::after {
    content: none;
}

.breadcrumb a {
    color: #1a73e8;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: #7c4dff;
}

.breadcrumb li[aria-current="page"] {
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Search Box ===== */
.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 8px;
}

.search-box input {
    flex: 1;
    padding: 14px 20px;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    color: #e8edf5;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.search-box input:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.search-box button {
    padding: 14px 28px;
    border-radius: 50px;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    color: #fff;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.search-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(26, 115, 232, 0.3);
}

/* ===== Related & Sitemap ===== */
.related-list,
.sitemap-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.related-list a,
.sitemap-list a {
    background: rgba(255, 255, 255, 0.04);
    padding: 10px 24px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.related-list a:hover,
.sitemap-list a:hover {
    background: rgba(26, 115, 232, 0.1);
    border-color: #1a73e8;
    transform: scale(1.05);
}

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: none;
}

.sticky-sidebar {
    background: rgba(11, 14, 26, 0.8);
    backdrop-filter: blur(16px);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    min-width: 140px;
}

.sticky-sidebar h3 {
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: #1a73e8;
}

.sticky-sidebar ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sticky-sidebar a {
    font-size: 0.85rem;
    padding: 6px 0;
    transition: color 0.2s;
}

.sticky-sidebar a:hover {
    color: #1a73e8;
}

/* ===== EEAT Section ===== */
.eeat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.eeat-item {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.3s, background 0.3s;
}

.eeat-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.08);
}

.eeat-item h3 {
    font-size: 0.85rem;
    color: #1a73e8;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.eeat-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

/* ===== Footer ===== */
footer {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 60px 0 30px;
    position: relative;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 16px;
    color: #1a73e8;
    font-size: 1rem;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: color 0.2s, padding-left 0.2s;
}

.footer-col a:hover {
    color: #1a73e8;
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1a73e8, #7c4dff);
    color: #fff;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(26, 115, 232, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(26, 115, 232, 0.5);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(11, 14, 26, 0.95);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .hero-banner {
        height: 60vh;
        min-height: 350px;
    }

    .banner-prev,
    .banner-next {
        font-size: 1.5rem;
        padding: 8px 12px;
    }

    .section {
        padding: 60px 0;
    }

    .section h2 {
        margin-bottom: 32px;
    }

    .about-grid,
    .products-grid,
    .advantages-grid,
    .solutions-grid,
    .cases-grid,
    .testimonials-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 1.2rem;
    }

    .search-box {
        flex-direction: column;
    }

    .search-box button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-banner {
        height: 50vh;
        min-height: 300px;
    }

    .hero-content h1,
    .hero-content h2 {
        font-size: 1.6rem;
    }

    .hero-content p {
        font-size: 0.95rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 28px;
        font-size: 0.9rem;
    }

    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    .about-card,
    .product-card,
    .solution-card,
    .case-card,
    .testimonial-card,
    .news-card {
        padding: 24px 20px;
    }

    .contact-info {
        padding: 24px;
    }

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

/* ===== Dark Mode Support (via class toggle) ===== */
body.light-mode {
    background-color: #f4f7fc;
    color: #1a1f2e;
}

body.light-mode header {
    background: rgba(244, 247, 252, 0.85);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

body.light-mode .hero-banner {
    background: linear-gradient(135deg, #e8f0fe 0%, #d4e4fc 50%, #c2d9f8 100%);
}

body.light-mode .hero-content h1,
body.light-mode .hero-content h2 {
    background: linear-gradient(135deg, #1a1f2e, #1a73e8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.light-mode .hero-content p {
    color: rgba(26, 31, 46, 0.6);
}

body.light-mode .about-card,
body.light-mode .product-card,
body.light-mode .advantage-item,
body.light-mode .solution-card,
body.light-mode .case-card,
body.light-mode .testimonial-card,
body.light-mode .news-card,
body.light-mode .faq-item,
body.light-mode .contact-info,
body.light-mode .eeat-item,
body.light-mode .partner,
body.light-mode .app-list li,
body.light-mode .related-list a,
body.light-mode .sitemap-list a {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(8px);
}

body.light-mode .about-card p,
body.light-mode .product-card p,
body.light-mode .advantage-item p,
body.light-mode .solution-card p,
body.light-mode .case-card p,
body.light-mode .testimonial-card p,
body.light-mode .news-card p,
body.light-mode .faq-answer p,
body.light-mode .contact-info p,
body.light-mode .eeat-item p {
    color: rgba(26, 31, 46, 0.65);
}

body.light-mode .breadcrumb li {
    color: rgba(26, 31, 46, 0.5);
}

body.light-mode .search-box input {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 0, 0, 0.1);
    color: #1a1f2e;
}

body.light-mode .search-box input::placeholder {
    color: rgba(26, 31, 46, 0.3);
}

body.light-mode .btn-secondary {
    background: rgba(26, 31, 46, 0.06);
    color: #1a1f2e;
    border-color: rgba(0, 0, 0, 0.1);
}

body.light-mode .btn-secondary:hover {
    background: rgba(26, 31, 46, 0.12);
}

body.light-mode footer {
    background: rgba(255, 255, 255, 0.7);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

body.light-mode .footer-col a {
    color: rgba(26, 31, 46, 0.6);
}

body.light-mode .footer-bottom p {
    color: rgba(26, 31, 46, 0.4);
}

body.light-mode .sticky-sidebar {
    background: rgba(244, 247, 252, 0.9);
    border-color: rgba(0, 0, 0, 0.06);
}

body.light-mode .nav-actions button:hover {
    background: rgba(0, 0, 0, 0.05);
}