:root {
    --primary: #0e5fd8;
    --primary-dark: #0a47a8;
    --text: #1a1a1a;
    --muted: #4a4a4a;
    --bg: #f4f8ff;
    --white: #fff;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.site-header {
    background: var(--white);
    box-shadow: 0 2px 12px rgba(14, 95, 216, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 24px;
    font-size: 15px;
}

.nav-links a {
    color: var(--muted);
    padding: 6px 10px;
    border-radius: 6px;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: rgba(14, 95, 216, 0.08);
}

.hero {
    background: radial-gradient(circle at top, rgba(14, 95, 216, 0.25), transparent 55%), var(--white);
    padding: 100px 20px 80px;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.hero p {
    max-width: 760px;
    margin: 0 auto 30px;
    color: var(--muted);
    font-size: 18px;
}

.btn-group {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 26px;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 12px 30px rgba(14, 95, 216, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 30px rgba(14, 95, 216, 0.35);
}

.btn-outline {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(14, 95, 216, 0.08);
}

.section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

.section h2 {
    font-size: 32px;
    margin-bottom: 16px;
}

.section p.section-lead {
    color: var(--muted);
    max-width: 780px;
    margin-bottom: 40px;
}

.grid {
    display: grid;
    gap: 24px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
    background: var(--white);
    border-radius: 18px;
    padding: 28px;
    box-shadow: 0 10px 30px rgba(14, 95, 216, 0.08);
}

.card h3 {
    margin-top: 0;
    color: var(--primary);
}

.card ul {
    padding-left: 18px;
    color: var(--muted);
}

.pricing-card {
    border: 1px solid rgba(14, 95, 216, 0.15);
    position: relative;
}

.pricing-card .price {
    font-size: 40px;
    margin: 10px 0 20px;
}

.blog-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.blog-item {
    background: var(--white);
    padding: 20px;
    border-radius: 14px;
    box-shadow: 0 8px 20px rgba(14, 95, 216, 0.08);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.blog-item span {
    color: var(--primary);
    font-size: 14px;
}

.blog-item p {
    margin: 0;
    color: var(--muted);
}

.footer {
    background: #05183f;
    color: rgba(255, 255, 255, 0.85);
    padding: 40px 20px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
}

.footer a {
    color: rgba(255, 255, 255, 0.85);
}

.telegram-link {
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 12px 16px;
    border-radius: 12px 0 0 12px;
    box-shadow: 0 8px 20px rgba(14, 95, 216, 0.25);
    font-weight: 600;
    writing-mode: vertical-rl;
}

.contact-info,
.about-content {
    background: var(--white);
    padding: 32px;
    border-radius: 18px;
    box-shadow: 0 12px 30px rgba(14, 95, 216, 0.08);
}

.timeline {
    border-left: 3px solid rgba(14, 95, 216, 0.3);
    padding-left: 24px;
}

.timeline-item {
    margin-bottom: 28px;
    position: relative;
}

.timeline-item::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    position: absolute;
    left: -33px;
    top: 4px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.contact-card {
    background: rgba(14, 95, 216, 0.08);
    padding: 18px;
    border-radius: 14px;
}

.download-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.download-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .telegram-link {
        right: 0;
    }
}