:root {
    --text: #1f1c18;
    --muted: #5d5850;
    --accent: #8b6b43;
    --accent-soft: rgba(139,107,67,0.18);
    --surface: #ffffff;
    --surface-soft: #fbf7f1;
    --border: #dfd6c8;
    --shadow: 0 26px 60px rgba(31,28,24,0.09);
}

.intro {
    margin: 0 auto;
    max-width: 1000px;
    background: var(--surface);
    border: 1px solid rgba(31,28,24,0.06);
    border-radius: 28px;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
}

.intro p {
    margin: 1.25rem 0;
    text-align: center;
    font-size: 1.02rem;
    line-height: 1.85;
    color: var(--muted);
}

.intro p strong {
    color: var(--text);
}

.home-domain-section {
    width: 100%;
    padding-top: 0.75rem;
    padding-bottom: 1.5rem;
    background: transparent;
}

.content-maxwidth {
    width: min(1320px, calc(100% - 3rem));
    margin: 0 auto;
}

.home-domain-section {
    padding-left: 0;
    padding-right: 0;
}

.home-domain-section .content-maxwidth {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0 1rem;
}

.domain-grid {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    flex-wrap: wrap;
    width: 100%;
}

@media screen and (min-width: 993px) {
    .domain-grid {
        flex-wrap: nowrap;
    }
}

.domain-sidebar {
    flex: 0 0 42%;
    max-width: 42%;
    min-width: 340px;
}

.domain-detail {
    flex: 1 1 55%;
    min-width: 360px;
}

.domain-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.domain-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.35rem 1rem;
    border-radius: 18px;
    border: 1px solid rgba(31,28,24,0.08);
    background: var(--surface);
    text-align: center;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease;
    cursor: pointer;
    min-height: 160px;
    justify-content: center;
    word-break: break-word;
}

.domain-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
}

.domain-item:hover,
.domain-item.active {
    transform: translateY(-2px);
    border-color: rgba(139,107,67,0.3);
    box-shadow: 0 20px 38px rgba(31,28,24,0.08);
    background: var(--accent-soft);
}

.domain-icon {
    width: 84px;
    min-width: 84px;
    height: 84px;
    border-radius: 14px;
    background: rgba(139,107,67,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
}

.domain-icon img,
.domain-icon svg {
    width: 48px;
    height: 48px;
    display: block;
}

.domain-info { display: none; }

.domain-title {
    margin: 0;
    font-size: 1rem;
    line-height: 1.25;
    font-weight: 700;
    color: var(--text);
    max-width: 100%;
}

.domain-title {
    white-space: normal;
}

.domain-info p {
    margin: 0.35rem 0 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--muted);
}

.domain-card {
    display: none;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.28s ease, transform 0.28s ease;
}

.domain-card.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.domain-card-content {
    animation: revealSlide 0.35s ease forwards;
}

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

.domain-card-content {
    padding: 2rem;
    border-radius: 32px;
    background: var(--surface);
    border: 1px solid rgba(31,28,24,0.08);
    box-shadow: var(--shadow);
}

.domain-card-content h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: clamp(1.45rem, 2vw, 1.75rem);
    color: var(--text);
    letter-spacing: -0.03em;
}

.domain-card-content p {
    margin: 1rem 0 0;
    color: var(--muted);
    line-height: 1.85;
    text-align: justify;
}

.domain-card-content p strong {
    color: var(--text);
}

@media screen and (max-width: 1200px) {
    .domain-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media screen and (max-width: 992px) {
    .domain-grid {
        flex-direction: column;
        gap: 1.5rem;
    }

    .domain-sidebar,
    .domain-detail {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: auto;
        width: 100%;
    }

    .content-maxwidth {
        width: calc(100% - 2rem);
        padding: 0 1rem;
    }

    .domain-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }

    .domain-item {
        width: 100%;
        min-height: 130px;
        padding: 1rem 0.85rem;
    }

    .domain-top {
        gap: 0.5rem;
    }

    .domain-title {
        display: none;
    }
}

@media screen and (max-width: 576px) {
    .domain-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.65rem;
    }

    .domain-item {
        gap: 0.5rem;
        padding: 0.8rem 0.7rem;
        min-height: 100px;
        justify-content: center;
    }

    .domain-top {
        gap: 0.35rem;
    }

    .domain-icon {
        width: 50px;
        min-width: 50px;
        height: 50px;
    }

    .domain-icon img,
    .domain-icon svg {
        width: 28px;
        height: 28px;
    }
}

@media screen and (max-width: 768px) {
    .domain-item {
        gap: 0.85rem;
        padding: 1rem 1rem;
    }

    .domain-icon {
        width: 60px;
        min-width: 60px;
        height: 60px;
    }

    .domain-icon img,
    .domain-icon svg {
        width: 34px;
        height: 34px;
    }
}

@media screen and (max-width: 576px) {
    .domain-card-content {
        padding: 1.5rem;
    }

    .intro {
        padding: 1.75rem 1.25rem;
    }
}