* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #fdfdf8;
}

/* Navigation */
.nav {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-image {
    height: 1.8rem;
    width: auto;
}

.back-link {
    display: none;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid #e0e0e0;
}

.header h1 {
    font-size: 2.5rem;
    color: #1976D2;
    margin-bottom: 1rem;
}

.header .date {
    color: #666;
    font-size: 1rem;
}

/* Content */
.content {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.content h2 {
    font-size: 1.8rem;
    color: #1976D2;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.content h2:first-of-type {
    margin-top: 0;
}

.content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content p {
    margin-bottom: 1rem;
}

.content ul, .content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.content strong {
    color: #1976D2;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer p {
    opacity: 0.8;
    margin: 0;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #1976D2;
    margin: 3px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    padding: 1.5rem;
    z-index: 999;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-menu a {
    display: block;
    padding: 1rem;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.mobile-menu a:hover {
    background: rgba(25, 118, 210, 0.08);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 2rem 1.5rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .content {
        padding: 2rem 1.5rem;
    }

    .content h2 {
        font-size: 1.5rem;
    }

    .content h3 {
        font-size: 1.2rem;
    }

    .back-link {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }

    .content {
        padding: 1.5rem 1rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.8rem;
    }
}