* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary: #1a73e8;
    --primary-dark: #0f4a9e;
    --bg-dark: #0b0e1a;
    --bg-card: rgba(255,255,255,0.06);
    --glass: rgba(255,255,255,0.08);
    --text: #e8edf5;
    --text-light: #a0aec0;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --radius: 20px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}
body.light {
    --bg-dark: #f4f7fc;
    --bg-card: rgba(0,0,0,0.04);
    --glass: rgba(255,255,255,0.7);
    --text: #1a202c;
    --text-light: #4a5568;
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: #4a9eff;
}
img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(11,14,26,0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}
body.light header {
    background: rgba(244,247,252,0.8);
    border-bottom-color: rgba(0,0,0,0.06);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    flex-wrap: wrap;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
}
.logo svg {
    width: 40px;
    height: 40px;
}
.logo span {
    background: linear-gradient(135deg, #1a73e8, #6c9eff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
nav ul {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}
nav ul li a {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}
nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}
nav ul li a:hover::after, nav ul li a.active::after {
    width: 100%;
}
nav ul li a:hover, nav ul li a.active {
    color: var(--text);
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 4px;
}
.dark-toggle {
    background: var(--glass);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text);
    border-radius: 40px;
    padding: 6px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}
.dark-toggle:hover {
    background: var(--primary);
}
.hero {
    padding: 140px 0 80px;
    background: radial-gradient(ellipse at 30% 20%, rgba(26,115,232,0.15) 0%, transparent 60%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26,115,232,0.08), transparent);
    top: -200px;
    right: -200px;
    animation: float 8s infinite alternate;
}
@keyframes float {
    0% { transform: translate(0,0) scale(1); }
    100% { transform: translate(-40px,40px) scale(1.1); }
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero-content h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #6c9eff 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
body.light .hero-content h1 {
    background: linear-gradient(135deg, #1a202c 0%, #1a73e8 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-content p {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 520px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(26,115,232,0.3);
}
.btn-primary:hover {
    background: #1557b0;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(26,115,232,0.4);
}
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
    background: var(--glass);
    border-color: var(--primary);
}
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-visual svg {
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    background: linear-gradient(145deg, rgba(26,115,232,0.1), rgba(0,0,0,0.2));
    backdrop-filter: blur(8px);
    padding: 20px;
}
.banner-carousel {
    padding: 40px 0;
    position: relative;
    overflow: hidden;
}
.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}
.carousel-slide {
    min-width: 100%;
    padding: 60px 40px;
    background: var(--glass);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}
.carousel-slide h2 {
    font-size: 2rem;
    font-weight: 700;
}
.carousel-slide p {
    max-width: 600px;
    color: var(--text-light);
}
.carousel-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
}
.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-light);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.5;
}
.carousel-dot.active {
    background: var(--primary);
    opacity: 1;
    transform: scale(1.2);
}
section {
    padding: 80px 0;
}
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.section-title p {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}
.grid-2, .grid-3, .grid-4 {
    display: grid;
    gap: 28px;
}
.grid-2 {
    grid-template-columns: repeat(2,1fr);
}
.grid-3 {
    grid-template-columns: repeat(3,1fr);
}
.grid-4 {
    grid-template-columns: repeat(4,1fr);
}
.card {
    background: var(--glass);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: 1px solid rgba(255,255,255,0.05);
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: default;
}
.card:hover {
    transform: translateY(-6px);
    border-color: rgba(26,115,232,0.2);
    box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.card svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    border-radius: 12px;
}
.card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}
.card p {
    color: var(--text-light);
    font-size: 0.95rem;
}
.timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: relative;
    padding-left: 30px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary);
    opacity: 0.3;
}
.timeline-item {
    position: relative;
    padding-left: 20px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    border: 2px solid var(--bg-dark);
}
.timeline-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
}
.timeline-item span {
    color: var(--primary);
    font-size: 0.85rem;
}
.faq-item {
    background: var(--glass);
    border-radius: 16px;
    margin-bottom: 12px;
    border: 1px solid rgba(255,255,255,0.04);
    overflow: hidden;
    transition: var(--transition);
}
.faq-question {
    padding: 20px 24px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}
.faq-question::after {
    content: '+';
    font-size: 1.6rem;
    transition: var(--transition);
    color: var(--primary);
}
.faq-item.open .faq-question::after {
    content: '−';
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-light);
}
.faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 24px 20px;
}
.howto-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 28px;
}
.howto-step .step-num {
    background: var(--primary);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
    gap: 20px;
}
.contact-info div {
    background: var(--glass);
    padding: 20px;
    border-radius: 16px;
    text-align: center;
}
.contact-info div h4 {
    margin-bottom: 6px;
}
footer {
    background: rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.04);
    padding: 40px 0 20px;
    margin-top: 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px,1fr));
    gap: 32px;
    margin-bottom: 32px;
}
.footer-grid h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--text);
}
.footer-grid ul {
    list-style: none;
}
.footer-grid ul li {
    margin-bottom: 6px;
}
.footer-grid ul li a {
    color: var(--text-light);
    font-size: 0.9rem;
}
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-light);
    font-size: 0.85rem;
}
.footer-bottom a {
    color: var(--text-light);
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(26,115,232,0.3);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    z-index: 999;
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.back-to-top:hover {
    background: #1557b0;
    transform: translateY(-4px);
}
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content p {
        margin: 0 auto 32px;
    }
    .hero-buttons {
        justify-content: center;
    }
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background: rgba(11,14,26,0.95);
        backdrop-filter: blur(16px);
        padding: 20px;
        border-radius: 16px;
        margin-top: 12px;
        gap: 16px;
    }
    nav ul.open {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .hero-content h1 {
        font-size: 2.2rem;
    }
    .carousel-slide {
        padding: 40px 20px;
    }
    .contact-info {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .hero {
        padding: 100px 0 40px;
    }
    .contact-info {
        grid-template-columns: 1fr;
    }
}
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}
.search-overlay.open {
    display: flex;
}
.search-box {
    background: var(--bg-dark);
    padding: 40px;
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow);
}
.search-box input {
    width: 100%;
    padding: 16px 20px;
    border-radius: 60px;
    border: 1px solid rgba(255,255,255,0.1);
    background: var(--glass);
    color: var(--text);
    font-size: 1rem;
    outline: none;
}
.search-box input:focus {
    border-color: var(--primary);
}
.search-results {
    margin-top: 20px;
    max-height: 300px;
    overflow-y: auto;
}
.search-results div {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    cursor: pointer;
    transition: var(--transition);
}
.search-results div:hover {
    background: var(--glass);
}
.breadcrumb {
    display: flex;
    gap: 8px;
    padding: 16px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}
.breadcrumb a {
    color: var(--text-light);
}
.breadcrumb span {
    color: var(--text);
}
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    display: inline-block;
}