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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    line-height: 1.6;
    color: #111;
    background: #fff;
}

h1 {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.subhead {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #eee;
}

.stats {
    display: flex;
    gap: 1.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.stat-card {
    flex: 1;
    min-width: 130px;
    padding: 1.5rem 1rem;
    background: #fafafa;
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 500;
    color: #111;
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.7rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.intro {
    margin: 2rem 0;
}

.intro p {
    margin-bottom: 1rem;
    color: #333;
}

.section-title {
    font-size: 1.3rem;
    font-weight: 500;
    margin: 2rem 0 1rem 0;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.research-preview {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.research-preview h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.research-preview .preview-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin: 0.5rem 0;
}

.stat-line {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.3rem 0;
    color: #555;
}

.research-preview .excerpt {
    font-size: 0.85rem;
    color: #444;
    margin: 0.5rem 0;
    line-height: 1.5;
}

.research-preview .excerpt strong {
    font-weight: 700;
    color: #111;
}

.research-preview .excerpt p {
    margin-bottom: 0.5rem;
}

.preview-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    background: #f0f0f0;
    color: #555;
    cursor: pointer;
    border: none;
}

footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
    font-size: 0.8rem;
    color: #888;
    text-align: center;
}

a {
    color: #111;
    text-decoration: underline;
}

.button {
    display: inline-block;
    background: #111;
    color: #fff;
    padding: 0.6rem 1.5rem;
    text-decoration: none;
    font-size: 0.9rem;
    margin: 1rem 0;
    border-radius: 4px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #fff;
    max-width: 400px;
    width: 90%;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #888;
}

.email-btn {
    display: inline-block;
    background: #111;
    color: #fff;
    padding: 0.6rem 1.5rem;
    text-decoration: none;
    margin-top: 0.5rem;
    border-radius: 4px;
}

.container {
    max-width: 100%;
}

/*                              (                            ) */
.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    background: #f0f0f0;
    color: #555;
    cursor: pointer;
    transition: background 0.2s ease;
}

.stat-badge:hover {
    background: #e0e0e0;
}

.preview-tags {
    margin: 0.75rem 0;
}

.preview-tags .tag {
    font-size: 0.7rem;
    background: #f5f5f5;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
    cursor: pointer;
}

.preview-tags .tag-more {
    font-size: 0.7rem;
    color: #888;
    background: #fafafa;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
}

/* ===== ДЕТАЛЬНАЯ СТРАНИЦА ИССЛЕДОВАНИЯ ===== */

/* Основной контейнер */
.research-detail {
    display: block;
    max-width: 900px;
    margin: 0 auto;
}

/* Все прямые потомки — блочные */
.research-detail > * {
    display: block;
    width: 100%;
}

.back-link-wrapper {
    margin-bottom: 2rem;
    text-align: left;
}

.back-link {
    display: inline-block;
    color: #888;
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    color: #111;
}

.research-detail h1 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    width: 100%;
}

.research-date {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
    width: 100%;
}

.research-full {
    margin: 2rem 0;
    line-height: 1.6;
    width: 100%;
}

.research-full p {
    margin-bottom: 1rem;
}

.research-full strong {
    font-weight: 600;
    color: #111;
}

/* Блок тегов */
.tags-section {
    margin: 2rem 0;
    padding: 1rem 0;
    border-top: 1px solid #eee;
    width: 100%;
}

.tags-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

/* Блок статистики */
.stats-section {
    margin: 2rem 0;
    padding: 1rem 0;
    border-top: 1px solid #eee;
    width: 100%;
}

.stats-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

/* Блок кнопок */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1.5rem 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    width: 100%;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #111;
    color: white;
}

.btn-primary:hover {
    background: #333;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #e8f5e9;
    color: #2e7d32;
}

.btn-secondary:hover {
    background: #c8e6c9;
    transform: translateY(-2px);
}

/* Блок "Почему я" */
.why-me {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #fafafa;
    border-radius: 12px;
    width: 100%;
}

.why-me h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.why-me ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.why-me li {
    margin: 0.5rem 0;
}

.why-me .btn {
    margin-top: 1rem;
}

/* Теги */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ===== СТРАНИЦА КАТАЛОГА ИССЛЕДОВАНИЙ ===== */

/* Только для каталога — добавляем класс research-catalog-page */
.research-catalog-page.container {
    display: flex;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Обычный контейнер (для главной и других страниц) */
.container {
    display: block;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

.main-content {
    flex: 2;
}

.sidebar {
    flex: 1;
    position: sticky;
    top: 40px;
}

.research-card {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.research-card h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: #111;
}

.research-card h2 a {
    text-decoration: none;
    color: #111;
}

.research-card h2 a:hover {
    text-decoration: underline;
}

.research-card .excerpt {
    font-size: 0.9rem;
    color: #444;
    margin: 0.5rem 0;
    line-height: 1.5;
}

.research-card .excerpt p {
    margin-bottom: 0.5rem;
}

.research-card .excerpt strong {
    font-weight: 700;
    color: #111;
}

/* Футер карточки */
.research-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
}

.research-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Кнопка "> Тезисы" */
.details-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: #555;
    text-decoration: none;
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    background: #f5f5f5;
    transition: all 0.2s ease;
}

.details-link:hover {
    background: #e0e0e0;
    color: #111;
}

/* Теги в каталоге */
.preview-tags {
    margin: 0.75rem 0;
}

.preview-tags .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
}

.preview-tags .tag {
    font-size: 0.7rem;
    background: #f5f5f5;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
    cursor: pointer;
}

.preview-tags .tag-more {
    font-size: 0.7rem;
    color: #888;
    background: #fafafa;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
}

/* Навигация в сайдбаре */
.nav-card {
    margin-bottom: 2rem;
}

.nav-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eee;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-link {
    font-size: 0.75rem;
    color: #555;
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    background: #f5f5f5;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tag-link:hover {
    background: #e0e0e0;
    color: #111;
}

.tag-link.active {
    background: #111;
    color: white;
}

/* Скрытые карточки при фильтрации */
.research-card.hidden {
    display: none;
}

/* Сообщение "не найдено" */
.no-results-message {
    text-align: center;
    padding: 3rem;
    color: #888;
    background: #fafafa;
    border-radius: 12px;
    margin: 2rem 0;
}


/* Стили для главной — ссылки и кнопки */
.research-title-link {
    text-decoration: none;
    color: #111;
}

.research-title-link:hover {
    text-decoration: underline;
}

.preview-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.details-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: #555;
    text-decoration: none;
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    background: #f5f5f5;
    transition: all 0.2s ease;
}

.details-link:hover {
    background: #e0e0e0;
    color: #111;
}

.preview-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
}

/* Для мобильных */
@media (max-width: 767px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        position: static;
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 1px solid #eee;
    }
    
    .research-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .details-link {
        text-align: center;
        justify-content: center;
    }
}