.hero {
    text-align: center;
    padding: 64px 0 48px;
    position: relative
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse at center top, rgba(45, 91, 227, .07)0, transparent 70%);
    pointer-events: none
}

.hero__title {
    font-size: 56px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 16px;
    line-height: 1.1;
    letter-spacing: -.03em
}

.hero__subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin: 0 0 48px
}

.hero-search {
    display: flex;
    align-items: center;
    max-width: 640px;
    width: 100%;
    margin: 0 auto;
    background: var(--bg-surface);
    border: 2px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color .15s ease, box-shadow .15s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .08)
}

.hero-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light), 0 4px 24px rgba(45, 91, 227, .15)
}

.hero-search__input {
    flex: 1;
    padding: 18px 24px;
    font-size: 16px;
    color: var(--text-primary);
    background: 0 0;
    border: 0;
    outline: 0
}

.hero-search__input::placeholder {
    color: var(--text-muted)
}

.hero-search__btn {
    padding: 18px 32px;
    background: var(--accent);
    color: #fff;
    border: 0;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: background .15s ease;
    display: flex;
    align-items: center
}

.hero-search__btn:hover {
    background: var(--accent-hover)
}

.home-page__body {
    width: 100%;
    min-height: 100%
}

.home-page__main {
    overflow: hidden
}

.category-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 0 24px 32px
}

.category-card {
    position: relative;
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 24px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .05)
}

.category-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity .15s ease
}

.category-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(45, 91, 227, .1), 0 1px 4px rgba(0, 0, 0, .05);
    transform: translateY(-2px)
}

.category-card:hover::before {
    opacity: 1
}

.category-card__icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 18px;
    position: relative
}

.category-card__icon::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(45, 91, 227, .15)0, transparent 60%)
}

.category-card__title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
    letter-spacing: -.01em
}

.category-card__count {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 500
}

.category-card__desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5
}

.category-card__subcategories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px
}

.category-card__tag {
    font-size: 11px;
    padding: 3px 10px;
    background: var(--bg-surface-alt);
    color: var(--text-secondary);
    border-radius: 6px;
    border: 1px solid var(--border);
    font-weight: 500
}

.category-menu-section {
    padding: 16px 0 12px;
    display: flex;
    flex-direction: column;
    gap: 6px
}

.category-menu-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 6px 0;
    border-bottom: 1px solid var(--border)
}

.category-menu-row:last-of-type {
    border-bottom: none
}

.category-menu-row__label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    width: 72px;
    flex-shrink: 0;
    letter-spacing: .02em;
    text-transform: uppercase;
    display: flex;
    align-items: center
}

.category-menu-row__subs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center
}

.category-menu-btn {
    font-size: 14px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color .15s ease, color .15s ease, background .15s ease
}

.category-menu-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light)
}

.category-menu-btn.active {
    border-color: var(--accent);
    color: #fff;
    background: var(--accent)
}

.calc-shortcuts {
    padding: 0 0 24px
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    max-height: 240px;
    overflow: hidden
}

.calc-list-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    font-size: 13px;
    transition: border-color .15s ease, box-shadow .15s ease
}

.calc-list-card:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(37, 99, 235, .1)
}

.calc-list-card__info {
    flex: 1;
    min-width: 0
}

.calc-list-card__name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis
}

.calc-list-card__meta {
    font-size: 11px;
    color: var(--text-muted)
}

.calc-list-card__right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0
}

.calc-list-card__arrow {
    color: var(--text-muted);
    font-size: 16px
}

.calc-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500
}

.calc-badge.badge-green {
    background: #dcfce7;
    color: #166534
}

.calc-badge.badge-blue {
    background: #dbeafe;
    color: #1e40af
}

.calc-badge.badge-purple {
    background: #f3e8ff;
    color: #7e22ce
}

.calc-badge.badge-orange {
    background: #ffedd5;
    color: #c2410c
}

.news-section {
    padding: 0 0 32px
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 12px
}

.news-item-card {
    position: relative;
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 20px;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: background .15s ease, color .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .04)
}

.news-item-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform .15s ease
}

.news-item-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(37, 99, 235, .1), 0 1px 4px rgba(0, 0, 0, .05);
    transform: translateX(4px)
}

.news-item-card:hover::before {
    transform: scaleY(1)
}

.news-item-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px
}

.news-item-card__title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0
}

.news-item-card__date {
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0
}

.news-item-card__summary {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden
}

.news-item-card__tags {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap
}

.news-tag {
    font-size: 11px;
    padding: 3px 10px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 6px;
    font-weight: 500
}

@media (max-width:1200px) {
    .calc-grid {
        grid-template-columns: repeat(4, 1fr)
    }
}

@media (max-width:900px) {
    .calc-grid {
        grid-template-columns: repeat(3, 1fr)
    }
}

@media (max-width:768px) {
    .hero__title {
        font-size: 32px
    }

    .category-cards {
        grid-template-columns: 1fr
    }

    .calc-grid {
        grid-template-columns: repeat(2, 1fr)
    }
}