```css
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --brand: #1a3b5c;
    --brand-light: #2b5a82;
    --accent: #f0c040;
    --glass: rgba(255, 255, 255, 0.08);
    --shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    --radius: 24px;
    --transition: 0.3s ease;
}
body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #f5f8fe;
    color: #132433;
    line-height: 1.5;
    transition: background 0.3s, color 0.3s;
}
body.dark {
    background: #0b1421;
    color: #e6edf5;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: background 0.3s;
}
body.dark header {
    background: rgba(11, 20, 33, 0.8);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    flex-wrap: wrap;
}
.logo svg {
    height: 42px;
    width: auto;
    display: block;
}
.nav {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    align-items: center;
}
.nav a {
    text-decoration: none;
    color: inherit;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 6px 8px;
    border-radius: 40px;
    transition: background 0.25s;
}
.nav a:hover,
.nav a.active {
    background: var(--accent);
    color: #0b1a2f;
}
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.hamburger span {
    width: 28px;
    height: 3px;
    background: #132433;
    border-radius: 4px;
    transition: 0.3s;
}
body.dark .hamburger span {
    background: #e6edf5;
}
.dark-toggle {
    background: none;
    border: 1px solid currentColor;
    border-radius: 40px;
    padding: 4px 14px;
    font-size: 0.9rem;
    cursor: pointer;
    color: inherit;
}
@media (max-width: 768px) {
    .nav {
        display: none;
        width: 100%;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.95);
        padding: 16px 0;
        border-radius: 32px;
        margin-top: 8px;
        backdrop-filter: blur(8px);
    }
    body.dark .nav {
        background: rgba(11, 20, 33, 0.95);
    }
    .nav.open {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
}
.hero {
    background: linear-gradient(145deg, #0b1a2f, #1e3e5c, #1a3b5c);
    padding: 60px 0 80px;
    border-radius: 0 0 48px 48px;
    color: white;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 40%, rgba(240, 192, 64, 0.08), transparent 70%);
    pointer-events: none;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
.hero h1 span {
    color: var(--accent);
}
.hero p {
    font-size: 1.2rem;
    opacity: 0.85;
    margin: 20px 0 30px;
    max-width: 500px;
}
.hero-cta {
    display: inline-block;
    background: var(--accent);
    color: #0b1a2f;
    padding: 14px 40px;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(240, 192, 64, 0.3);
    transition: transform 0.2s;
}
.hero-cta:hover {
    transform: scale(1.02);
}
.hero-visual {
    display: flex;
    justify-content: center;
}
.hero-visual svg {
    width: 100%;
    max-width: 400px;
    height: auto;
    filter: drop-shadow(0 12px 20px rgba(0, 0, 0, 0.3));
}
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2rem;
    }
}
section {
    margin: 60px 0;
}
.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 32px;
    position: relative;
    display: inline-block;
}
.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin-top: 8px;
    border-radius: 4px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}
.card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
body.dark .card {
    background: rgba(20, 32, 50, 0.6);
    border-color: #2a3f5a;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}
.glass {
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}
body.dark .glass {
    background: rgba(10, 22, 38, 0.5);
    border-color: #2c405a;
}
.badge {
    background: var(--accent);
    color: #0b1a2f;
    border-radius: 40px;
    padding: 4px 16px;
    font-weight: 500;
    display: inline-block;
    font-size: 0.85rem;
}
footer {
    background: #0b1421;
    color: #b0c4d9;
    padding: 40px 0 20px;
    border-radius: 40px 40px 0 0;
    margin-top: 60px;
}
body.dark footer {
    background: #050b14;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
}
.footer-grid a {
    color: #b0c4d9;
    text-decoration: none;
    display: block;
    margin: 6px 0;
    font-size: 0.9rem;
}
.footer-grid a:hover {
    color: white;
}
.copyright {
    border-top: 1px solid #253545;
    margin-top: 30px;
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
}
.anim-fade {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s, transform 0.6s;
}
.anim-fade.visible {
    opacity: 1;
    transform: translateY(0);
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent);
}
.carousel {
    position: relative;
    overflow: hidden;
}
.carousel-track {
    display: flex;
    transition: transform 0.5s ease;
}
.carousel-item {
    min-width: 100%;
    padding: 20px;
}
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
}
.carousel-dot {
    width: 12px;
    height: 12px;
    background: #ccc;
    border-radius: 20px;
    border: none;
    cursor: pointer;
    transition: 0.3s;
}
body.dark .carousel-dot {
    background: #3a4c66;
}
.carousel-dot.active {
    background: var(--accent);
    width: 32px;
}
.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 16px 0;
    cursor: pointer;
}
body.dark .faq-item {
    border-color: #2f405a;
}
.faq-question {
    font-weight: 600;
    display: flex;
    justify-content: space-between;
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s;
    opacity: 0.7;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    margin-top: 12px;
}
.howto-step {
    display: flex;
    gap: 18px;
    margin: 20px 0;
    align-items: flex-start;
}
.step-num {
    background: var(--accent);
    color: #0b1a2f;
    min-width: 36px;
    height: 36px;
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}
.backtop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--brand);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    transition: 0.3s;
    border: none;
    z-index: 99;
}
.backtop.show {
    opacity: 0.7;
}
.backtop:hover {
    opacity: 1;
}
.search-mock {
    display: flex;
    gap: 8px;
    max-width: 400px;
    background: white;
    border-radius: 60px;
    padding: 6px 6px 6px 18px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}
body.dark .search-mock {
    background: #1a2c44;
}
.search-mock input {
    border: none;
    background: transparent;
    width: 100%;
    padding: 10px 0;
    outline: none;
    color: inherit;
}
.search-mock button {
    background: var(--accent);
    border: none;
    border-radius: 40px;
    padding: 8px 20px;
    font-weight: 600;
    cursor: pointer;
}
.article-card {
    padding: 16px 0;
    border-bottom: 1px solid #e0e8f0;
}
body.dark .article-card {
    border-color: #2a3f5a;
}
.article-card h4 {
    margin-bottom: 6px;
}
.article-card small {
    opacity: 0.7;
}
.readmore {
    color: var(--accent);
    font-weight: 500;
    text-decoration: none;
}
.svg-icon {
    width: 48px;
    height: 48px;
    display: inline-block;
    background: currentColor;
    mask-size: cover;
    -webkit-mask-size: cover;
}
```