/* プラットフォームセクション - 完全版 */
.platform-section {
    padding: 120px 0 !important;
    background: #ffffff !important;
    position: relative !important;
    overflow: hidden !important;
}

.platform-section::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    right: 0 !important;
    width: 50% !important;
    height: 100% !important;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05) 0%, rgba(44, 95, 141, 0.05) 100%) !important;
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%) !important;
    z-index: 0 !important;
}

.platform-content {
    position: relative !important;
    z-index: 1 !important;
    display: grid !important;
    grid-template-columns: 1.2fr 1fr !important;
    gap: 100px !important;
    align-items: center !important;
}

.platform-text {
    max-width: 650px !important;
}

.platform-label {
    display: inline-block !important;
    background: linear-gradient(135deg, #4a90e2, #2c5f8d) !important;
    color: #ffffff !important;
    padding: 8px 20px !important;
    border-radius: 24px !important;
    font-size: 0.9rem !important;
    font-weight: 700 !important;
    margin-bottom: 24px !important;
    letter-spacing: 0.5px !important;
    text-transform: uppercase !important;
}

.platform-title {
    font-size: 3rem !important;
    font-weight: 700 !important;
    margin-bottom: 24px !important;
    line-height: 1.3 !important;
    letter-spacing: -0.5px !important;
    color: #1a2332 !important;
}

.platform-title-highlight {
    background: linear-gradient(135deg, #4a90e2, #2c5f8d) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

.platform-description {
    font-size: 1.15rem !important;
    line-height: 1.9 !important;
    margin-bottom: 40px !important;
    color: #1a1a1a !important;
}

.platform-buttons {
    display: flex !important;
    gap: 20px !important;
    align-items: center !important;
}

.btn-platform {
    display: inline-flex !important;
    align-items: center !important;
    gap: 12px !important;
    background: linear-gradient(135deg, #4a90e2, #2c5f8d) !important;
    color: #ffffff !important;
    padding: 18px 36px !important;
    border-radius: 50px !important;
    text-decoration: none !important;
    font-weight: 700 !important;
    font-size: 1.05rem !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 8px 24px rgba(74, 144, 226, 0.3) !important;
    position: relative !important;
    overflow: hidden !important;
}

.btn-platform:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 12px 36px rgba(74, 144, 226, 0.4) !important;
}

.platform-link-text {
    color: #4a90e2 !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    transition: all 0.3s ease !important;
}

.platform-link-text:hover {
    gap: 12px !important;
    color: #2c5f8d !important;
}

.platform-visual {
    position: relative !important;
}

.platform-card-stack {
    position: relative !important;
    width: 100% !important;
    min-height: 400px !important;
}

.platform-card {
    position: absolute !important;
    background: #ffffff !important;
    border-radius: 20px !important;
    padding: 32px !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1) !important;
    border: 1px solid #e0e0e0 !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.platform-card:nth-child(1) {
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 3 !important;
    transform: translateY(0) rotate(0deg) !important;
}

.platform-card:nth-child(2) {
    top: 20px !important;
    left: 20px !important;
    right: -20px !important;
    z-index: 2 !important;
    transform: translateY(40px) rotate(2deg) !important;
    opacity: 0.9 !important;
}

.platform-card:nth-child(3) {
    top: 40px !important;
    left: 40px !important;
    right: -40px !important;
    z-index: 1 !important;
    transform: translateY(80px) rotate(-2deg) !important;
    opacity: 0.8 !important;
}

.card-icon {
    width: 56px !important;
    height: 56px !important;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.15), rgba(44, 95, 141, 0.15)) !important;
    border-radius: 14px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-bottom: 20px !important;
}

.card-icon svg {
    width: 28px !important;
    height: 28px !important;
    color: #4a90e2 !important;
}

.card-title {
    font-size: 1.4rem !important;
    font-weight: 700 !important;
    margin-bottom: 12px !important;
    color: #1a2332 !important;
}

.card-description {
    font-size: 1rem !important;
    line-height: 1.7 !important;
    color: #666666 !important;
}

.card-stat {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    margin-top: 20px !important;
    padding-top: 20px !important;
    border-top: 1px solid #e0e0e0 !important;
}

.card-stat-number {
    font-size: 2rem !important;
    font-weight: 700 !important;
    color: #4a90e2 !important;
}

.card-stat-label {
    font-size: 0.9rem !important;
    color: #666666 !important;
    line-height: 1.4 !important;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .platform-section {
        padding: 80px 0 !important;
    }

    .platform-section::before {
        width: 100% !important;
        clip-path: none !important;
    }

    .platform-content {
        grid-template-columns: 1fr !important;
        gap: 60px !important;
    }

    .platform-text {
        max-width: 100% !important;
    }

    .platform-label {
        font-size: 0.85rem !important;
        padding: 6px 16px !important;
        margin-bottom: 20px !important;
    }

    .platform-title {
        font-size: 2.2rem !important;
        letter-spacing: -0.3px !important;
    }

    .platform-description {
        font-size: 1rem !important;
        margin-bottom: 30px !important;
    }

    .platform-buttons {
        flex-direction: column !important;
        gap: 16px !important;
        align-items: flex-start !important;
    }

    .btn-platform {
        width: 100% !important;
        justify-content: center !important;
        padding: 16px 28px !important;
        font-size: 1rem !important;
    }

    .platform-link-text {
        font-size: 0.95rem !important;
    }

    .platform-card-stack {
        min-height: 500px !important;
    }

    .platform-card {
        padding: 28px 24px !important;
    }

    .platform-card:nth-child(2) {
        top: 30px !important;
        left: 10px !important;
        right: -10px !important;
        transform: translateY(60px) rotate(2deg) !important;
    }

    .platform-card:nth-child(3) {
        top: 60px !important;
        left: 20px !important;
        right: -20px !important;
        transform: translateY(120px) rotate(-2deg) !important;
    }

    .card-icon {
        width: 50px !important;
        height: 50px !important;
    }

    .card-icon svg {
        width: 24px !important;
        height: 24px !important;
    }

    .card-title {
        font-size: 1.3rem !important;
    }

    .card-description {
        font-size: 0.95rem !important;
    }

    .card-stat {
        margin-top: 16px !important;
        padding-top: 16px !important;
    }

    .card-stat-number {
        font-size: 1.8rem !important;
    }

    .card-stat-label {
        font-size: 0.85rem !important;
    }
}

@media (max-width: 480px) {
    .platform-section {
        padding: 60px 0 !important;
    }

    .platform-label {
        font-size: 0.8rem !important;
        padding: 6px 14px !important;
    }

    .platform-title {
        font-size: 1.8rem !important;
    }

    .platform-description {
        font-size: 0.95rem !important;
    }

    .btn-platform {
        padding: 14px 24px !important;
        font-size: 0.95rem !important;
    }

    .platform-card-stack {
        min-height: 550px !important;
    }

    .platform-card {
        padding: 24px 20px !important;
    }

    .platform-card:nth-child(2) {
        top: 25px !important;
        left: 8px !important;
        right: -8px !important;
    }

    .platform-card:nth-child(3) {
        top: 50px !important;
        left: 16px !important;
        right: -16px !important;
    }

    .card-icon {
        width: 45px !important;
        height: 45px !important;
    }

    .card-icon svg {
        width: 22px !important;
        height: 22px !important;
    }

    .card-title {
        font-size: 1.2rem !important;
    }

    .card-description {
        font-size: 0.9rem !important;
    }

    .card-stat-number {
        font-size: 1.6rem !important;
    }

    .card-stat-label {
        font-size: 0.8rem !important;
    }
}