* {
    font-family: 'Inter', sans-serif;
}

body {
    background-color: #fafbfc;
    color: #1e2a41;
}

.navbar {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    background-color: #ffffff !important;
    padding: 0.9rem 0;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #0b2b4f !important;
    font-size: 1.4rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: #2c3e5c !important;
    padding: 0.5rem 1rem !important;
    transition: color 0.2s;
}

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
        color: #0d6efd !important;
    }

.navbar-toggler {
    border: none;
    box-shadow: none;
}

.banner {
    background: linear-gradient(145deg, #0a2a44 0%, #1b4a7a 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
    margin-bottom: 3rem;
}

    .banner h1 {
        font-weight: 700;
        font-size: 3.8rem;
        letter-spacing: -0.01em;
        max-width: 1000px;
        margin: 0 auto 1rem;
        line-height: 1.3;
    }

    .banner .location-date {
        font-size: 1.4rem;
        font-weight: 400;
        opacity: 0.9;
        margin-bottom: 1rem;
    }

    .banner .date {
        font-size: 1.3rem;
        font-weight: 300;
        margin-bottom: 2.2rem;
        display: inline-block;
        padding-bottom: 0.5rem;
    }

.btn-register {
    background-color: #ffb347;
    border: none;
    color: #0a2a44;
    font-weight: 600;
    padding: 0.9rem 2.8rem;
    border-radius: 50px;
    font-size: 1.25rem;
    box-shadow: 0 8px 18px rgba(0,0,0,0.15);
    transition: transform 0.2s, box-shadow 0.2s;
    margin: 0 auto;
}

    .btn-register:hover {
        background-color: #ffa01c;
        transform: translateY(-3px);
        box-shadow: 0 15px 25px rgba(0,0,0,0.2);
        color: #0a2a44;
    }

.section-title {
    font-weight: 700;
    font-size: 2.4rem;
    color: #0b2b4f;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.75rem;
}

    .section-title:after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 70px;
        height: 4px;
        background: #ffb347;
        border-radius: 2px;
    }

.card-committee, .card-speaker {
    background: white;
    border: none;
    border-radius: 1.2rem;
    padding: 1.8rem 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 30, 60, 0.05);
    height: 100%;
    transition: all 0.2s;
}

    .card-committee:hover, .card-speaker:hover {
        box-shadow: 0 15px 30px rgba(0, 30, 60, 0.1);
    }

.subgroup-title {
    font-weight: 600;
    font-size: 1.6rem;
    color: #1b4a7a;
    margin-bottom: 1.4rem;
    border-left: 5px solid #ffb347;
    padding-left: 1rem;
}

.member-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .member-list li {
        margin-bottom: 1.3rem;
        border-bottom: 1px dashed #e6ecf3;
        padding-bottom: 0.8rem;
    }

        .member-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

.member-name {
    font-weight: 600;
    font-size: 1.15rem;
    color: #0b2b4f;
    display: block;
}

.member-affil {
    font-size: 0.95rem;
    color: #5b6f88;
    font-style: italic;
}

.about-text {
    font-size: 1.08rem;
    line-height: 1.7;
    color: #2c3e5c;
    background: white;
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: 0 5px 18px rgba(0,0,0,0.02);
}

.footer {
    background-color: #1e2f41;
    color: #e0e9f5;
    padding: 2.5rem 0 2rem;
    margin-top: 4rem;
}

    .footer a {
        color: #ffb347;
        text-decoration: none;
    }

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

    .footer .contact-info {
        background: rgba(255,255,255,0.03);
        padding: 1rem 1.5rem;
        border-radius: 60px;
        display: inline-block;
        margin-bottom: 1.5rem;
    }

        .footer .contact-info i {
            margin-right: 0.4rem;
            color: #ffb347;
        }

.copyright {
    opacity: 0.7;
    font-size: 0.9rem;
    border-top: 1px solid #3a4e66;
    padding-top: 1.8rem;
    margin-top: 1.8rem;
}

@media (max-width: 768px) {
    .banner h1 {
        font-size: 2.2rem;
    }

    .banner .location-date {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .subgroup-title {
        font-size: 1.4rem;
    }
}

.page-header {
    background: linear-gradient(145deg, #f0f5fa, #e6edf5);
    padding: 2.5rem 0 2rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.03);
    text-align: center;
}

    .page-header h1 {
        font-weight: 700;
        font-size: 3rem;
        color: #0b2b4f;
        letter-spacing: -0.01em;
        margin: 0;
    }

.accommodation-card {
    background: white;
    border-radius: 2rem;
    padding: 2.5rem 2.8rem;
    box-shadow: 0 20px 35px rgba(0, 20, 40, 0.06);
    border: 1px solid rgba(0,0,0,0.02);
    max-width: 1000px;
    margin: 0 auto 3rem;
}

    .accommodation-card p {
        font-size: 1.08rem;
        line-height: 1.7;
        color: #2c3e5c;
        margin-bottom: 1.4rem;
    }

        .accommodation-card p.lead {
            font-weight: 500;
            font-size: 1.2rem;
            color: #1b4a7a;
            border-left: 4px solid #ffb347;
            padding-left: 1.2rem;
        }

    .accommodation-card hr {
        margin: 2rem 0;
        border-top: 1px dashed #d0ddeb;
        opacity: 0.7;
    }

.transport-block {
    margin-bottom: 2rem;
}

    .transport-block strong {
        display: inline-block;
        font-weight: 600;
        color: #0b2b4f;
        min-width: 190px;
    }

.note {
    background: #f0f7fe;
    padding: 1rem 1.8rem;
    border-radius: 1.2rem;
    margin-top: 2rem;
    font-size: 1rem;
}