@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');

:root {
    --primary: #2b7fff;
    --primary-light: #e6f0ff;
    --text-main: #1d1d1f;
    --text-muted: #515154;
    --bg-page: #fbfbfd;
    --bg-card: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    --radius: 16px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    max-width: 800px;
    margin: 60px auto;
    padding: 0 20px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    text-align: center;
    margin-bottom: 50px;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
    border-radius: var(--radius);
    box-shadow: 0 8px 30px rgba(43, 127, 255, 0.15);
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary), #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.update-date {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 400;
}

main {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0,0,0,0.03);
}

.intro {
    font-size: 1.1rem;
    margin-bottom: 40px;
    color: var(--text-main);
}

section {
    margin-bottom: 35px;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary);
    display: flex;
    align-items: center;
}

h2::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 24px;
    background: var(--primary);
    margin-right: 12px;
    border-radius: 2px;
}

p {
    margin-bottom: 15px;
    color: var(--text-muted);
}

.contact-card {
    background-color: var(--primary-light);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
}

.contact-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.contact-card a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (max-width: 600px) {
    .container {
        margin: 30px auto;
    }
    main {
        padding: 25px;
    }
    h1 {
        font-size: 1.8rem;
    }
}