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

:root {
    --primary: #ffd700;
    --primary-dark: #e6c200;
    --secondary: #6a11cb;
    --accent: #2575fc;
    --accent2: #f5576c;
    --bg-dark: #0d0d1a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #24243e;
    --bg-glass: rgba(26, 26, 46, 0.75);
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0c0;
    --text-muted: #6c6c8a;
    --border-color: rgba(255, 215, 0, 0.15);
    --shadow-glow: 0 0 30px rgba(255, 215, 0, 0.08);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    position: relative;
}

h2 {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

/* ===== Scroll Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Header & Navigation ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

header.scrolled {
    background: rgba(13, 13, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    gap: 20px;
}

.logo a {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary);
    background: rgba(255, 215, 0, 0.08);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-actions button {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.nav-actions button:hover {
    background: rgba(255, 255, 255, 0.1);
}

.menu-toggle {
    display: none;
}

/* ===== Hero Section ===== */
.hero {
    padding: 0;
    margin-top: 64px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(106, 17, 203, 0.15), transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(255, 215, 0, 0.1), transparent 50%);
    animation: heroGlow 10s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-30px, -20px); }
}

.hero-banner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

.slide {
    display: none;
    align-items: center;
    gap: 40px;
    padding: 60px 0;
    animation: slideFade 0.5s ease;
}

.slide.active {
    display: flex;
}

@keyframes slideFade {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-content {
    flex: 1;
    min-width: 0;
}

.slide-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.slide-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 540px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent2));
    color: var(--bg-dark);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.4);
    color: var(--bg-dark);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

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

.slide-visual {
    flex: 0 0 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide-visual svg {
    filter: drop-shadow(0 10px 40px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.banner-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
    width: 36px;
    border-radius: 6px;
}

.banner-prev, .banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.banner-prev { left: 10px; }
.banner-next { right: 10px; }

.banner-prev:hover, .banner-next:hover {
    background: rgba(255, 215, 0, 0.2);
    transform: translateY(-50%) scale(1.1);
}

/* ===== Brand Introduction ===== */
.brand-intro {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.brand-story {
    display: flex;
    align-items: center;
    gap: 60px;
}

.story-text {
    flex: 1;
}

.story-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.story-visual {
    flex: 0 0 300px;
}

.story-visual svg {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

/* ===== Enterprise Introduction ===== */
.enterprise-intro {
    background: var(--bg-card);
}

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

.enterprise-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.enterprise-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.enterprise-item svg {
    margin: 0 auto 20px;
}

.enterprise-item h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.enterprise-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Brand History ===== */
.brand-history {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-dark);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.timeline-year {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Team Introduction ===== */
.team-intro {
    background: var(--bg-card);
}

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

.team-member {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.team-member:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.team-member svg {
    margin: 0 auto 20px;
    border-radius: 50%;
    transition: var(--transition);
}

.team-member:hover svg {
    transform: scale(1.05);
}

.team-member h3 {
    color: var(--text-primary);
    margin-bottom: 6px;
    font-size: 1.2rem;
}

.team-member p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

/* ===== Product Center ===== */
.product-center {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

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

.product-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent2));
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.25);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.product-card svg {
    margin: 0 auto 20px;
    transition: var(--transition);
}

.product-card:hover svg {
    transform: scale(1.05) rotate(-2deg);
}

.product-card h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.product-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Product Advantages ===== */
.product-advantages {
    background: var(--bg-card);
}

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

.advantage-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.advantage-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.advantage-item svg {
    margin: 0 auto 20px;
}

.advantage-item h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.advantage-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Solutions ===== */
.solutions {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

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

.solution-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.solution-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.solution-item h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.solution-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Industry Applications ===== */
.industry-applications {
    background: var(--bg-card);
}

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

.industry-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.industry-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.industry-item h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.industry-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Case Studies ===== */
.case-studies {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.case-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.case-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.case-item svg {
    margin: 0 auto 20px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.case-item:hover svg {
    transform: scale(1.02);
}

.case-item h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.case-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Partners ===== */
.partners {
    background: var(--bg-card);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: center;
}

.partner-item {
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.partner-item svg {
    transition: var(--transition);
    opacity: 0.7;
}

.partner-item:hover svg {
    opacity: 1;
    transform: scale(1.05);
}

/* ===== Testimonials ===== */
.testimonials {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

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

.testimonial-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
}

.testimonial-item::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.2;
    font-family: serif;
    line-height: 1;
}

.testimonial-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.testimonial-item p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    font-style: italic;
}

.testimonial-author {
    margin-top: 16px;
    color: var(--primary) !important;
    font-weight: 600;
    font-style: normal !important;
}

/* ===== News ===== */
.news-articles {
    background: var(--bg-card);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.news-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.news-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.news-item h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.news-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.news-item time {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.related-articles {
    margin-bottom: 30px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.related-articles h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.related-articles ul li {
    margin-bottom: 8px;
}

.related-articles ul li a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.related-articles ul li a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.article-navigation a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.article-navigation a:hover {
    color: var(--primary);
    background: rgba(255, 215, 0, 0.08);
    border-color: rgba(255, 215, 0, 0.3);
}

/* ===== FAQ ===== */
.faq {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(255, 215, 0, 0.2);
}

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

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 1.5rem;
    transition: var(--transition);
    color: var(--primary);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 0 24px 20px;
}

.faq-answer p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== HowTo ===== */
.howto {
    background: var(--bg-card);
}

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

.howto-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 0;
}

.step {
    text-align: center;
    position: relative;
    z-index: 1;
    background: var(--bg-card);
    padding: 30px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent2));
    color: var(--bg-dark);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.step h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Contact ===== */
.contact {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.contact-item:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.contact-item svg {
    margin: 0 auto 16px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Friends Links ===== */
.friends-links {
    background: var(--bg-card);
}

.links-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.links-grid a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    transition: var(--transition);
}

.links-grid a:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(255, 215, 0, 0.08);
    transform: translateY(-2px);
}

/* ===== Sitemap ===== */
.sitemap {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.sitemap-grid ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
}

.sitemap-grid ul li a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.sitemap-grid ul li a:hover {
    color: var(--primary);
}

/* ===== Footer ===== */
footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
}

.footer-links h3 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-info p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Search Overlay ===== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.search-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.search-container {
    width: 80%;
    max-width: 600px;
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 20px 60px 20px 24px;
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

.search-container input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.1);
}

.search-container input::placeholder {
    color: var(--text-muted);
}

.search-close {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.5rem;
    padding: 8px;
    transition: var(--transition);
}

.search-close:hover {
    color: var(--primary);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent2));
    color: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .slide-content h1 {
        font-size: 2.2rem;
    }
    .slide-visual {
        flex-basis: 300px;
    }
    .slide-visual svg {
        width: 300px;
        height: auto;
    }
}

@media (max-width: 768px) {
    header {
        padding: 0;
    }
    nav {
        padding: 10px 16px;
    }
    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(13, 13, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        transform: translateY(-120%);
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
        z-index: 999;
    }
    .nav-links.active {
        transform: translateY(0);
    }
    .nav-links li a {
        font-size: 1.1rem;
        padding: 12px 16px;
        width: 100%;
        text-align: center;
    }
    .menu-toggle {
        display: flex;
    }
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    .slide {
        flex-direction: column;
        text-align: center;
        gap: 30px;
        padding: 30px 0;
    }
    .slide-content h1 {
        font-size: 1.8rem;
    }
    .slide-content p {
        max-width: 100%;
        font-size: 1rem;
    }
    .hero-actions {
        justify-content: center;
    }
    .slide-visual {
        flex-basis: auto;
    }
    .slide-visual svg {
        width: 250px;
        height: auto;
    }
    .banner-prev, .banner-next {
        width: 36px;
        height: 36px;
    }
    .banner-prev { left: 4px; }
    .banner-next { right: 4px; }
    section {
        padding: 50px 0;
    }
    h2 {
        font-size: 1.6rem;
        margin-bottom: 32px;
    }
    .brand-story {
        flex-direction: column;
        gap: 30px;
    }
    .story-visual {
        flex-basis: auto;
    }
    .enterprise-grid,
    .team-grid,
    .product-grid,
    .advantages-grid,
    .solutions-grid,
    .industry-grid,
    .testimonial-grid,
    .news-grid,
    .howto-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .case-grid {
        grid-template-columns: 1fr;
    }
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-info {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    .footer-links ul li a:hover {
        padding-left: 0;
    }
    .article-navigation {
        flex-direction: column;
    }
    .timeline {
        padding-left: 30px;
    }
    .timeline-item::before {
        left: -22px;
    }
    .howto-steps::before {
        display: none;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
    .search-container {
        width: 90%;
    }
    .search-container input {
        font-size: 1rem;
        padding: 16px 50px 16px 18px;
    }
}

@media (max-width: 480px) {
    .slide-content h1 {
        font-size: 1.5rem;
    }
    .btn-primary, .btn-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    .slide-visual svg {
        width: 200px;
    }
    .enterprise-item, .team-member, .product-card, .advantage-item,
    .solution-item, .industry-item, .case-item, .testimonial-item,
    .news-item, .step, .contact-item {
        padding: 24px 20px;
    }
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .partner-item svg {
        width: 100px;
        height: auto;
    }
    .links-grid a {
        font-size: 0.85rem;
        padding: 8px 16px;
    }
    .sitemap-grid ul {
        gap: 12px 16px;
    }
}