/* ==========================================================================
   Page Hero
   ========================================================================== */
.page-hero {
    position: relative;
    height: 55vh;
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.biz-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('images/business-hero.webp');
    background-size: cover;
    background-position: center 50%;
    z-index: 0;
}

.biz-hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
}

.page-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: bizFadeIn 1s ease-out both;
}

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

.page-hero-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.4em;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
}

.page-hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.25rem, 5vw, 4rem);
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.06em;
    line-height: 1.2;
    margin-bottom: 0.875rem;
}

.page-hero-en {
    font-size: clamp(0.875rem, 1.5vw, 1.0625rem);
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.3em;
    font-weight: 300;
}

/* ==========================================================================
   Overview
   ========================================================================== */
.biz-overview {
    padding: 8rem 0;
    background: var(--color-bg);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.overview-card {
    display: flex;
    flex-direction: column;
    padding: 2.75rem 2rem 2.5rem;
    background: var(--color-bg-alt);
    border-top: 3px solid transparent;
    transition: all var(--transition-base);
    color: inherit;
    position: relative;
}

.overview-card:hover {
    border-top-color: var(--color-accent);
    background: #ffffff;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.07);
    transform: translateY(-4px);
}

.overview-card--soon {
    opacity: 0.65;
    cursor: default;
    pointer-events: none;
}

.overview-num {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--color-text-lighter);
    margin-bottom: 1.5rem;
}

.overview-icon {
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.overview-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.04em;
    margin-bottom: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.soon-badge {
    font-size: 0.5625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-lighter);
    border: 1px solid var(--color-border);
    padding: 0.15rem 0.5rem;
    font-family: var(--font-primary);
}

.overview-text {
    font-size: 0.875rem;
    line-height: 2;
    color: var(--color-text-light);
    flex: 1;
    margin-bottom: 1.75rem;
}

.overview-link {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    margin-top: auto;
}

/* ==========================================================================
   Detail Sections
   ========================================================================== */
.biz-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 520px;
}

.biz-detail--reverse {
    direction: rtl;
}

.biz-detail--reverse > * {
    direction: ltr;
}

.biz-detail-img {
    overflow: hidden;
}

.biz-detail-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.9s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
}

.biz-detail:hover .biz-detail-img img {
    transform: scale(1.04);
}

.biz-detail-body {
    padding: 5rem 4.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--color-bg-alt);
}

.biz-detail--reverse .biz-detail-body {
    background: var(--color-bg);
}

.biz-detail-title {
    font-family: var(--font-serif);
    font-size: clamp(1.625rem, 2.8vw, 2.375rem);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.04em;
    margin: 0.875rem 0 1.75rem;
    line-height: 1.25;
}

.biz-detail-text {
    font-size: 0.9375rem;
    line-height: 2.2;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.biz-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.biz-features li {
    font-size: 0.875rem;
    color: var(--color-text);
    padding-left: 1.375rem;
    position: relative;
    line-height: 1.7;
}

.biz-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ==========================================================================
   AI Coming Soon
   ========================================================================== */
.biz-ai {
    display: block;
    position: relative;
    background: var(--color-primary);
    padding: 7rem 0;
    text-align: center;
    overflow: hidden;
}

.biz-ai::before {
    content: 'AI';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(10rem, 25vw, 22rem);
    font-weight: 700;
    font-family: var(--font-serif);
    color: rgba(255, 255, 255, 0.03);
    letter-spacing: -0.04em;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

.biz-ai-inner {
    position: relative;
    z-index: 1;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.biz-ai .section-label {
    color: var(--color-accent);
    margin-bottom: 0.875rem;
}

.biz-ai .biz-detail-title {
    color: #ffffff;
    margin-bottom: 1.25rem;
}

.ai-soon-label {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.35em;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 0.3rem 1rem;
    margin-bottom: 1.75rem;
}

.biz-ai .biz-detail-text {
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 0;
}

/* ==========================================================================
   Flow
   ========================================================================== */
.biz-flow {
    padding: 8rem 0;
    background: var(--color-bg);
}

.flow-list {
    list-style: none;
    margin-top: 4rem;
    position: relative;
}

.flow-list::before {
    content: '';
    position: absolute;
    left: 2.25rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--color-border);
}

.flow-item {
    display: flex;
    align-items: flex-start;
    gap: 2.5rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.flow-item:first-child {
    border-top: 1px solid var(--color-border);
}

.flow-num {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: #ffffff;
    background: var(--color-accent);
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.flow-body {
    padding-top: 0.375rem;
}

.flow-title {
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.04em;
    margin-bottom: 0.625rem;
}

.flow-text {
    font-size: 0.875rem;
    line-height: 2;
    color: var(--color-text-light);
}

/* ==========================================================================
   Cases
   ========================================================================== */
.biz-cases {
    padding: 8rem 0;
    background: var(--color-bg-alt);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.case-card {
    background: var(--color-bg);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.case-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.case-img {
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.9s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
}

.case-card:hover .case-img img {
    transform: scale(1.05);
}

.case-body {
    padding: 1.625rem 1.5rem 2rem;
}

.case-tag {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 0.15rem 0.625rem;
    margin-bottom: 0.875rem;
}

.case-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.case-text {
    font-size: 0.8125rem;
    line-height: 1.9;
    color: var(--color-text-light);
}

/* ==========================================================================
   CTA
   ========================================================================== */
.biz-cta {
    position: relative;
    height: 55vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.biz-cta-bg {
    position: absolute;
    inset: 0;
    background-image: url('images/contact-bg.webp');
    background-size: cover;
    background-position: center 40%;
    z-index: 0;
}

.biz-cta-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.62);
}

.biz-cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 var(--container-padding);
    max-width: 720px;
}

.biz-cta-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.4em;
    color: var(--color-accent);
    margin-bottom: 1.75rem;
}

.biz-cta-heading {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 3.5vw, 2.75rem);
    font-weight: 700;
    color: #ffffff;
    line-height: 1.5;
    letter-spacing: 0.04em;
    margin-bottom: 1.25rem;
}

.biz-cta-text {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.04em;
    margin-bottom: 2.5rem;
    line-height: 2;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .overview-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
    }

    .biz-detail {
        grid-template-columns: 1fr;
    }

    .biz-detail--reverse {
        direction: ltr;
    }

    .biz-detail-img {
        height: 360px;
    }

    .biz-detail-body {
        padding: 3.5rem 3rem;
    }

    .cases-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .biz-detail-img {
        height: 260px;
    }

    .biz-detail-body {
        padding: 2.5rem var(--container-padding);
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }

    .flow-list::before {
        display: none;
    }

    .flow-item {
        gap: 1.5rem;
        padding: 2rem 0;
    }
}